diff --git a/Documentation/ABI/testing/debugfs-cros-ec b/Documentation/ABI/testing/debugfs-cros-ec
new file mode 100644
index 0000000000000000000000000000000000000000..1fe0add99a2a991f4d5b1824ded0526c59be65a6
--- /dev/null
+++ b/Documentation/ABI/testing/debugfs-cros-ec
@@ -0,0 +1,56 @@
+What: /sys/kernel/debug/<cros-ec-device>/console_log
+Date: September 2017
+KernelVersion: 4.13
+Description:
+ If the EC supports the CONSOLE_READ command type, this file
+ can be used to grab the EC logs. The kernel polls for the log
+ and keeps its own buffer but userspace should grab this and
+ write it out to some logs.
+
+What: /sys/kernel/debug/<cros-ec-device>/panicinfo
+Date: September 2017
+KernelVersion: 4.13
+Description:
+ This file dumps the EC panic information from the previous
+ reboot. This file will only exist if the PANIC_INFO command
+ type is supported by the EC.
+
+What: /sys/kernel/debug/<cros-ec-device>/pdinfo
+Date: June 2018
+KernelVersion: 4.17
+Description:
+ This file provides the port role, muxes and power debug
+ information for all the USB PD/type-C ports available. If
+ the are no ports available, this file will be just an empty
+ file.
+
+What: /sys/kernel/debug/<cros-ec-device>/uptime
+Date: June 2019
+KernelVersion: 5.3
+Description:
+ A u32 providing the time since EC booted in ms. This is
+ is used for synchronizing the AP host time with the EC
+ log. An error is returned if the command is not supported
+ by the EC or there is a communication problem.
+
+What: /sys/kernel/debug/<cros-ec-device>/last_resume_result
+Date: June 2019
+KernelVersion: 5.3
+Description:
+ Some ECs have a feature where they will track transitions to
+ the (Intel) processor's SLP_S0 line, in order to detect cases
+ where a system failed to go into S0ix. When the system resumes,
+ an EC with this feature will return a summary of SLP_S0
+ transitions that occurred. The last_resume_result file returns
+ the most recent response from the AP's resume message to the EC.
+
+ The bottom 31 bits contain a count of the number of SLP_S0
+ transitions that occurred since the suspend message was
+ received. Bit 31 is set if the EC attempted to wake the
+ system due to a timeout when watching for SLP_S0 transitions.
+ Callers can use this to detect a wake from the EC due to
+ S0ix timeouts. The result will be zero if no suspend
+ transitions have been attempted, or the EC does not support
+ this feature.
+
+ Output will be in the format: "0x%08x\n".
diff --git a/Documentation/ABI/testing/debugfs-wilco-ec b/Documentation/ABI/testing/debugfs-wilco-ec
index 73a5a66ddca655ce547e9f1bf9e343bebbedf065..9d8d9d2def5b35dd367392210d0979190e5f86c8 100644
--- a/Documentation/ABI/testing/debugfs-wilco-ec
+++ b/Documentation/ABI/testing/debugfs-wilco-ec
@@ -23,11 +23,9 @@ Description:
For writing, bytes 0-1 indicate the message type, one of enum
wilco_ec_msg_type. Byte 2+ consist of the data passed in the
- request, starting at MBOX[0]
-
- At least three bytes are required for writing, two for the type
- and at least a single byte of data. Only the first
- EC_MAILBOX_DATA_SIZE bytes of MBOX will be used.
+ request, starting at MBOX[0]. At least three bytes are required
+ for writing, two for the type and at least a single byte of
+ data.
Example:
// Request EC info type 3 (EC firmware build date)
@@ -40,7 +38,7 @@ Description:
$ cat /sys/kernel/debug/wilco_ec/raw
00 00 31 32 2f 32 31 2f 31 38 00 38 00 01 00 2f 00 ..12/21/18.8...
- Note that the first 32 bytes of the received MBOX[] will be
- printed, even if some of the data is junk. It is up to you to
- know how many of the first bytes of data are the actual
- response.
+ Note that the first 16 bytes of the received MBOX[] will be
+ printed, even if some of the data is junk, and skipping bytes
+ 17 to 32. It is up to you to know how many of the first bytes of
+ data are the actual response.
diff --git a/Documentation/ABI/testing/sysfs-platform-wilco-ec b/Documentation/ABI/testing/sysfs-platform-wilco-ec
new file mode 100644
index 0000000000000000000000000000000000000000..8827a734f933169166b2ba7c2982f5aed5f04c5e
--- /dev/null
+++ b/Documentation/ABI/testing/sysfs-platform-wilco-ec
@@ -0,0 +1,40 @@
+What: /sys/bus/platform/devices/GOOG000C\:00/boot_on_ac
+Date: April 2019
+KernelVersion: 5.3
+Description:
+ Boot on AC is a policy which makes the device boot from S5
+ when AC power is connected. This is useful for users who
+ want to run their device headless or with a dock.
+
+ Input should be parseable by kstrtou8() to 0 or 1.
+
+What: /sys/bus/platform/devices/GOOG000C\:00/build_date
+Date: May 2019
+KernelVersion: 5.3
+Description:
+ Display Wilco Embedded Controller firmware build date.
+ Output will a MM/DD/YY string.
+
+What: /sys/bus/platform/devices/GOOG000C\:00/build_revision
+Date: May 2019
+KernelVersion: 5.3
+Description:
+ Display Wilco Embedded Controller build revision.
+ Output will a version string be similar to the example below:
+ d2592cae0
+
+What: /sys/bus/platform/devices/GOOG000C\:00/model_number
+Date: May 2019
+KernelVersion: 5.3
+Description:
+ Display Wilco Embedded Controller model number.
+ Output will a version string be similar to the example below:
+ 08B6
+
+What: /sys/bus/platform/devices/GOOG000C\:00/version
+Date: May 2019
+KernelVersion: 5.3
+Description:
+ Display Wilco Embedded Controller firmware version.
+ The format of the string is x.y.z. Where x is major, y is minor
+ and z is the build number. For example: 95.00.06
diff --git a/drivers/iio/common/cros_ec_sensors/Kconfig b/drivers/iio/common/cros_ec_sensors/Kconfig
index f9bf7ff7fcafd3ef8d5d48ebcfac87e525aee67c..bcb58fb76b9f7309375d8530878c73df98ebf4a3 100644
--- a/drivers/iio/common/cros_ec_sensors/Kconfig
+++ b/drivers/iio/common/cros_ec_sensors/Kconfig
@@ -21,3 +21,12 @@ config IIO_CROS_EC_SENSORS
Accelerometers, Gyroscope and Magnetometer that are
presented by the ChromeOS EC Sensor hub.
Creates an IIO device for each functions.
+
+config IIO_CROS_EC_SENSORS_LID_ANGLE
+ tristate "ChromeOS EC Sensor for lid angle"
+ depends on IIO_CROS_EC_SENSORS_CORE
+ help
+ Module to report the angle between lid and base for some
+ convertible devices.
+ This module is loaded when the EC can calculate the angle between the base
+ and the lid.
diff --git a/drivers/iio/common/cros_ec_sensors/Makefile b/drivers/iio/common/cros_ec_sensors/Makefile
index 7c2d6a966fe6db337f46ddb3aca9ed0871c83986..e0a33ab66d21acd32f5700c8debb4be7c729c6c8 100644
--- a/drivers/iio/common/cros_ec_sensors/Makefile
+++ b/drivers/iio/common/cros_ec_sensors/Makefile
@@ -5,3 +5,4 @@
obj-$(CONFIG_IIO_CROS_EC_SENSORS_CORE) += cros_ec_sensors_core.o
obj-$(CONFIG_IIO_CROS_EC_SENSORS) += cros_ec_sensors.o
+obj-$(CONFIG_IIO_CROS_EC_SENSORS_LID_ANGLE) += cros_ec_lid_angle.o
diff --git a/drivers/iio/common/cros_ec_sensors/cros_ec_lid_angle.c b/drivers/iio/common/cros_ec_sensors/cros_ec_lid_angle.c
new file mode 100644
index 0000000000000000000000000000000000000000..876dfd176b0ee6941a3b67527fd031d217bd1af8
--- /dev/null
+++ b/drivers/iio/common/cros_ec_sensors/cros_ec_lid_angle.c
@@ -0,0 +1,139 @@
+// SPDX-License-Identifier: GPL-2.0
+
+/*
+ * cros_ec_lid_angle - Driver for CrOS EC lid angle sensor.
+ *
+ * Copyright 2018 Google, Inc
+ *
+ * This driver uses the cros-ec interface to communicate with the Chrome OS
+ * EC about counter sensors. Counters are presented through
+ * iio sysfs.
+ */
+
+#include <linux/delay.h>
+#include <linux/device.h>
+#include <linux/iio/buffer.h>
+#include <linux/iio/common/cros_ec_sensors_core.h>
+#include <linux/iio/iio.h>
+#include <linux/iio/kfifo_buf.h>
+#include <linux/iio/trigger.h>
+#include <linux/iio/triggered_buffer.h>
+#include <linux/iio/trigger_consumer.h>
+#include <linux/kernel.h>
+#include <linux/mfd/cros_ec.h>
+#include <linux/mfd/cros_ec_commands.h>
+#include <linux/module.h>
+#include <linux/platform_device.h>
+#include <linux/slab.h>
+
+#define DRV_NAME "cros-ec-lid-angle"
+
+/*
+ * One channel for the lid angle, the other for timestamp.
+ */
+static const struct iio_chan_spec cros_ec_lid_angle_channels[] = {
+ {
+ .info_mask_separate = BIT(IIO_CHAN_INFO_RAW),
+ .scan_type.realbits = CROS_EC_SENSOR_BITS,
+ .scan_type.storagebits = CROS_EC_SENSOR_BITS,
+ .scan_type.sign = 'u',
+ .type = IIO_ANGL
+ },
+ IIO_CHAN_SOFT_TIMESTAMP(1)
+};
+
+/* State data for ec_sensors iio driver. */
+struct cros_ec_lid_angle_state {
+ /* Shared by all sensors */
+ struct cros_ec_sensors_core_state core;
+};
+
+static int cros_ec_sensors_read_lid_angle(struct iio_dev *indio_dev,
+ unsigned long scan_mask, s16 *data)
+{
+ struct cros_ec_sensors_core_state *st = iio_priv(indio_dev);
+ int ret;
+
+ st->param.cmd = MOTIONSENSE_CMD_LID_ANGLE;
+ ret = cros_ec_motion_send_host_cmd(st, sizeof(st->resp->lid_angle));
+ if (ret) {
+ dev_warn(&indio_dev->dev, "Unable to read lid angle\n");
+ return ret;
+ }
+
+ *data = st->resp->lid_angle.value;
+ return 0;
+}
+
+static int cros_ec_lid_angle_read(struct iio_dev *indio_dev,
+ struct iio_chan_spec const *chan,
+ int *val, int *val2, long mask)
+{
+ struct cros_ec_lid_angle_state *st = iio_priv(indio_dev);
+ s16 data;
+ int ret;
+
+ mutex_lock(&st->core.cmd_lock);
+ ret = cros_ec_sensors_read_lid_angle(indio_dev, 1, &data);
+ if (ret == 0) {
+ *val = data;
+ ret = IIO_VAL_INT;
+ }
+ mutex_unlock(&st->core.cmd_lock);
+ return ret;
+}
+
+static const struct iio_info cros_ec_lid_angle_info = {
+ .read_raw = &cros_ec_lid_angle_read,
+};
+
+static int cros_ec_lid_angle_probe(struct platform_device *pdev)
+{
+ struct device *dev = &pdev->dev;
+ struct iio_dev *indio_dev;
+ struct cros_ec_lid_angle_state *state;
+ int ret;
+
+ indio_dev = devm_iio_device_alloc(dev, sizeof(*state));
+ if (!indio_dev)
+ return -ENOMEM;
+
+ ret = cros_ec_sensors_core_init(pdev, indio_dev, false);
+ if (ret)
+ return ret;
+
+ indio_dev->info = &cros_ec_lid_angle_info;
+ state = iio_priv(indio_dev);
+ indio_dev->channels = cros_ec_lid_angle_channels;
+ indio_dev->num_channels = ARRAY_SIZE(cros_ec_lid_angle_channels);
+
+ state->core.read_ec_sensors_data = cros_ec_sensors_read_lid_angle;
+
+ ret = devm_iio_triggered_buffer_setup(dev, indio_dev, NULL,
+ cros_ec_sensors_capture, NULL);
+ if (ret)
+ return ret;
+
+ return devm_iio_device_register(dev, indio_dev);
+}
+
+static const struct platform_device_id cros_ec_lid_angle_ids[] = {
+ {
+ .name = DRV_NAME,
+ },
+ { /* sentinel */ }
+};
+MODULE_DEVICE_TABLE(platform, cros_ec_lid_angle_ids);
+
+static struct platform_driver cros_ec_lid_angle_platform_driver = {
+ .driver = {
+ .name = DRV_NAME,
+ .pm = &cros_ec_sensors_pm_ops,
+ },
+ .probe = cros_ec_lid_angle_probe,
+ .id_table = cros_ec_lid_angle_ids,
+};
+module_platform_driver(cros_ec_lid_angle_platform_driver);
+
+MODULE_DESCRIPTION("ChromeOS EC driver for reporting convertible lid angle.");
+MODULE_LICENSE("GPL v2");
diff --git a/drivers/input/keyboard/cros_ec_keyb.c b/drivers/input/keyboard/cros_ec_keyb.c
index d5600118159835321c3c55b1d10e1cf4468cc22e..38cb6d82d8fe672e1d2b6b7640b91b36c69cef3e 100644
--- a/drivers/input/keyboard/cros_ec_keyb.c
+++ b/drivers/input/keyboard/cros_ec_keyb.c
@@ -237,7 +237,7 @@ static int cros_ec_keyb_work(struct notifier_block *nb,
if (queued_during_suspend && !device_may_wakeup(ckdev->dev))
return NOTIFY_OK;
- switch (ckdev->ec->event_data.event_type) {
+ switch (ckdev->ec->event_data.event_type & EC_MKBP_EVENT_TYPE_MASK) {
case EC_MKBP_EVENT_KEY_MATRIX:
pm_wakeup_event(ckdev->dev, 0);
diff --git a/drivers/mfd/cros_ec.c b/drivers/mfd/cros_ec.c
index 5d5c41ac3845331218ce041aea68584605c4c242..2a9ac5213893ad435c2a5b1cb6ed6e0de85a614a 100644
--- a/drivers/mfd/cros_ec.c
+++ b/drivers/mfd/cros_ec.c
@@ -102,12 +102,16 @@ static int cros_ec_sleep_event(struct cros_ec_device *ec_dev, u8 sleep_event)
/* For now, report failure to transition to S0ix with a warning. */
if (ret >= 0 && ec_dev->host_sleep_v1 &&
- (sleep_event == HOST_SLEEP_EVENT_S0IX_RESUME))
+ (sleep_event == HOST_SLEEP_EVENT_S0IX_RESUME)) {
+ ec_dev->last_resume_result =
+ buf.u.resp1.resume_response.sleep_transitions;
+
WARN_ONCE(buf.u.resp1.resume_response.sleep_transitions &
EC_HOST_RESUME_SLEEP_TIMEOUT,
"EC detected sleep transition timeout. Total slp_s0 transitions: %d",
buf.u.resp1.resume_response.sleep_transitions &
EC_HOST_RESUME_SLEEP_TRANSITIONS_MASK);
+ }
return ret;
}
diff --git a/drivers/platform/chrome/Kconfig b/drivers/platform/chrome/Kconfig
index 2826f7136f6519c994f81095f50a473afee94e26..970679d0b6f66c4d6040cf1df60c9549dc805083 100644
--- a/drivers/platform/chrome/Kconfig
+++ b/drivers/platform/chrome/Kconfig
@@ -72,6 +72,19 @@ config CROS_EC_RPMSG
To compile this driver as a module, choose M here: the
module will be called cros_ec_rpmsg.
+config CROS_EC_ISHTP
+ tristate "ChromeOS Embedded Controller (ISHTP)"
+ depends on MFD_CROS_EC
+ depends on INTEL_ISH_HID
+ help
+ If you say Y here, you get support for talking to the ChromeOS EC
+ firmware running on Intel Integrated Sensor Hub (ISH), using the
+ ISH Transport protocol (ISH-TP). This uses a simple byte-level
+ protocol with a checksum.
+
+ To compile this driver as a module, choose M here: the
+ module will be called cros_ec_ishtp.
+
config CROS_EC_SPI
tristate "ChromeOS Embedded Controller (SPI)"
depends on MFD_CROS_EC && SPI
@@ -83,28 +96,17 @@ config CROS_EC_SPI
'pre-amble' bytes before the response actually starts.
config CROS_EC_LPC
- tristate "ChromeOS Embedded Controller (LPC)"
- depends on MFD_CROS_EC && ACPI && (X86 || COMPILE_TEST)
- help
- If you say Y here, you get support for talking to the ChromeOS EC
- over an LPC bus. This uses a simple byte-level protocol with a
- checksum. This is used for userspace access only. The kernel
- typically has its own communication methods.
-
- To compile this driver as a module, choose M here: the
- module will be called cros_ec_lpc.
-
-config CROS_EC_LPC_MEC
- bool "ChromeOS Embedded Controller LPC Microchip EC (MEC) variant"
- depends on CROS_EC_LPC
- default n
+ tristate "ChromeOS Embedded Controller (LPC)"
+ depends on MFD_CROS_EC && ACPI && (X86 || COMPILE_TEST)
help
- If you say Y here, a variant LPC protocol for the Microchip EC
- will be used. Note that this variant is not backward compatible
- with non-Microchip ECs.
+ If you say Y here, you get support for talking to the ChromeOS EC
+ over an LPC bus, including the LPC Microchip EC (MEC) variant.
+ This uses a simple byte-level protocol with a checksum. This is
+ used for userspace access only. The kernel typically has its own
+ communication methods.
- If you have a ChromeOS Embedded Controller Microchip EC variant
- choose Y here.
+ To compile this driver as a module, choose M here: the
+ module will be called cros_ec_lpcs.
config CROS_EC_PROTO
bool
diff --git a/drivers/platform/chrome/Makefile b/drivers/platform/chrome/Makefile
index 1b2f1dcfcd5cc54a624dea7697a7aaf3f63ba887..fd0af05cc14c8941100373f85df9103f4a8dd6f4 100644
--- a/drivers/platform/chrome/Makefile
+++ b/drivers/platform/chrome/Makefile
@@ -7,10 +7,10 @@ obj-$(CONFIG_CHROMEOS_LAPTOP) += chromeos_laptop.o
obj-$(CONFIG_CHROMEOS_PSTORE) += chromeos_pstore.o
obj-$(CONFIG_CHROMEOS_TBMC) += chromeos_tbmc.o
obj-$(CONFIG_CROS_EC_I2C) += cros_ec_i2c.o
+obj-$(CONFIG_CROS_EC_ISHTP) += cros_ec_ishtp.o
obj-$(CONFIG_CROS_EC_RPMSG) += cros_ec_rpmsg.o
obj-$(CONFIG_CROS_EC_SPI) += cros_ec_spi.o
-cros_ec_lpcs-objs := cros_ec_lpc.o cros_ec_lpc_reg.o
-cros_ec_lpcs-$(CONFIG_CROS_EC_LPC_MEC) += cros_ec_lpc_mec.o
+cros_ec_lpcs-objs := cros_ec_lpc.o cros_ec_lpc_mec.o
obj-$(CONFIG_CROS_EC_LPC) += cros_ec_lpcs.o
obj-$(CONFIG_CROS_EC_PROTO) += cros_ec_proto.o cros_ec_trace.o
obj-$(CONFIG_CROS_KBD_LED_BACKLIGHT) += cros_kbd_led_backlight.o
diff --git a/drivers/platform/chrome/cros_ec_debugfs.c b/drivers/platform/chrome/cros_ec_debugfs.c
index 4c2a27f6a6d09c5886e5e9dbe9b747f6204b61cd..8ec1cc2889f2e3d34c5215bb06e81b995832f9d3 100644
--- a/drivers/platform/chrome/cros_ec_debugfs.c
+++ b/drivers/platform/chrome/cros_ec_debugfs.c
@@ -25,7 +25,8 @@
#define CIRC_ADD(idx, size, value) (((idx) + (value)) & ((size) - 1))
-/* struct cros_ec_debugfs - ChromeOS EC debugging information
+/**
+ * struct cros_ec_debugfs - EC debugging information.
*
* @ec: EC device this debugfs information belongs to
* @dir: dentry for debugfs files
@@ -241,7 +242,35 @@ static ssize_t cros_ec_pdinfo_read(struct file *file,
read_buf, p - read_buf);
}
-const struct file_operations cros_ec_console_log_fops = {
+static ssize_t cros_ec_uptime_read(struct file *file, char __user *user_buf,
+ size_t count, loff_t *ppos)
+{
+ struct cros_ec_debugfs *debug_info = file->private_data;
+ struct cros_ec_device *ec_dev = debug_info->ec->ec_dev;
+ struct {
+ struct cros_ec_command cmd;
+ struct ec_response_uptime_info resp;
+ } __packed msg = {};
+ struct ec_response_uptime_info *resp;
+ char read_buf[32];
+ int ret;
+
+ resp = (struct ec_response_uptime_info *)&msg.resp;
+
+ msg.cmd.command = EC_CMD_GET_UPTIME_INFO;
+ msg.cmd.insize = sizeof(*resp);
+
+ ret = cros_ec_cmd_xfer_status(ec_dev, &msg.cmd);
+ if (ret < 0)
+ return ret;
+
+ ret = scnprintf(read_buf, sizeof(read_buf), "%u\n",
+ resp->time_since_ec_boot_ms);
+
+ return simple_read_from_buffer(user_buf, count, ppos, read_buf, ret);
+}
+
+static const struct file_operations cros_ec_console_log_fops = {
.owner = THIS_MODULE,
.open = cros_ec_console_log_open,
.read = cros_ec_console_log_read,
@@ -250,13 +279,20 @@ const struct file_operations cros_ec_console_log_fops = {
.release = cros_ec_console_log_release,
};
-const struct file_operations cros_ec_pdinfo_fops = {
+static const struct file_operations cros_ec_pdinfo_fops = {
.owner = THIS_MODULE,
.open = simple_open,
.read = cros_ec_pdinfo_read,
.llseek = default_llseek,
};
+static const struct file_operations cros_ec_uptime_fops = {
+ .owner = THIS_MODULE,
+ .open = simple_open,
+ .read = cros_ec_uptime_read,
+ .llseek = default_llseek,
+};
+
static int ec_read_version_supported(struct cros_ec_dev *ec)
{
struct ec_params_get_cmd_versions_v1 *params;
@@ -408,6 +444,12 @@ static int cros_ec_debugfs_probe(struct platform_device *pd)
debugfs_create_file("pdinfo", 0444, debug_info->dir, debug_info,
&cros_ec_pdinfo_fops);
+ debugfs_create_file("uptime", 0444, debug_info->dir, debug_info,
+ &cros_ec_uptime_fops);
+
+ debugfs_create_x32("last_resume_result", 0444, debug_info->dir,
+ &ec->ec_dev->last_resume_result);
+
ec->debug_info = debug_info;
dev_set_drvdata(&pd->dev, ec);
diff --git a/drivers/platform/chrome/cros_ec_ishtp.c b/drivers/platform/chrome/cros_ec_ishtp.c
new file mode 100644
index 0000000000000000000000000000000000000000..e504d255d5ce270967f0a082537f16bf2923aeff
--- /dev/null
+++ b/drivers/platform/chrome/cros_ec_ishtp.c
@@ -0,0 +1,763 @@
+// SPDX-License-Identifier: GPL-2.0
+// ISHTP interface for ChromeOS Embedded Controller
+//
+// Copyright (c) 2019, Intel Corporation.
+//
+// ISHTP client driver for talking to the Chrome OS EC firmware running
+// on Intel Integrated Sensor Hub (ISH) using the ISH Transport protocol
+// (ISH-TP).
+
+#include <linux/delay.h>
+#include <linux/mfd/core.h>
+#include <linux/mfd/cros_ec.h>
+#include <linux/mfd/cros_ec_commands.h>
+#include <linux/module.h>
+#include <linux/pci.h>
+#include <linux/intel-ish-client-if.h>
+
+/*
+ * ISH TX/RX ring buffer pool size
+ *
+ * The AP->ISH messages and corresponding ISH->AP responses are
+ * serialized. We need 1 TX and 1 RX buffer for these.
+ *
+ * The MKBP ISH->AP events are serialized. We need one additional RX
+ * buffer for them.
+ */
+#define CROS_ISH_CL_TX_RING_SIZE 8
+#define CROS_ISH_CL_RX_RING_SIZE 8
+
+/* ISH CrOS EC Host Commands */
+enum cros_ec_ish_channel {
+ CROS_EC_COMMAND = 1, /* AP->ISH message */
+ CROS_MKBP_EVENT = 2, /* ISH->AP events */
+};
+
+/*
+ * ISH firmware timeout for 1 message send failure is 1Hz, and the
+ * firmware will retry 2 times, so 3Hz is used for timeout.
+ */
+#define ISHTP_SEND_TIMEOUT (3 * HZ)
+
+/* ISH Transport CrOS EC ISH client unique GUID */
+static const guid_t cros_ish_guid =
+ GUID_INIT(0x7b7154d0, 0x56f4, 0x4bdc,
+ 0xb0, 0xd8, 0x9e, 0x7c, 0xda, 0xe0, 0xd6, 0xa0);
+
+struct header {
+ u8 channel;
+ u8 status;
+ u8 reserved[2];
+} __packed;
+
+struct cros_ish_out_msg {
+ struct header hdr;
+ struct ec_host_request ec_request;
+} __packed;
+
+struct cros_ish_in_msg {
+ struct header hdr;
+ struct ec_host_response ec_response;
+} __packed;
+
+#define IN_MSG_EC_RESPONSE_PREAMBLE \
+ offsetof(struct cros_ish_in_msg, ec_response)
+
+#define OUT_MSG_EC_REQUEST_PREAMBLE \
+ offsetof(struct cros_ish_out_msg, ec_request)
+
+#define cl_data_to_dev(client_data) ishtp_device((client_data)->cl_device)
+
+/*
+ * The Read-Write Semaphore is used to prevent message TX or RX while
+ * the ishtp client is being initialized or undergoing reset.
+ *
+ * The readers are the kernel function calls responsible for IA->ISH
+ * and ISH->AP messaging.
+ *
+ * The writers are .reset() and .probe() function.
+ */
+DECLARE_RWSEM(init_lock);
+
+/**
+ * struct response_info - Encapsulate firmware response related
+ * information for passing between function ish_send() and
+ * process_recv() callback.
+ *
+ * @data: Copy the data received from firmware here.
+ * @max_size: Max size allocated for the @data buffer. If the received
+ * data exceeds this value, we log an error.
+ * @size: Actual size of data received from firmware.
+ * @error: 0 for success, negative error code for a failure in process_recv().
+ * @received: Set to true on receiving a valid firmware response to host command
+ * @wait_queue: Wait queue for host to wait for firmware response.
+ */
+struct response_info {
+ void *data;
+ size_t max_size;
+ size_t size;
+ int error;
+ bool received;
+ wait_queue_head_t wait_queue;
+};
+
+/**
+ * struct ishtp_cl_data - Encapsulate per ISH TP Client.
+ *
+ * @cros_ish_cl: ISHTP firmware client instance.
+ * @cl_device: ISHTP client device instance.
+ * @response: Response info passing between ish_send() and process_recv().
+ * @work_ishtp_reset: Work queue reset handling.
+ * @work_ec_evt: Work queue for EC events.
+ * @ec_dev: CrOS EC MFD device.
+ *
+ * This structure is used to store per client data.
+ */
+struct ishtp_cl_data {
+ struct ishtp_cl *cros_ish_cl;
+ struct ishtp_cl_device *cl_device;
+
+ /*
+ * Used for passing firmware response information between
+ * ish_send() and process_recv() callback.
+ */
+ struct response_info response;
+
+ struct work_struct work_ishtp_reset;
+ struct work_struct work_ec_evt;
+ struct cros_ec_device *ec_dev;
+};
+
+/**
+ * ish_evt_handler - ISH to AP event handler
+ * @work: Work struct
+ */
+static void ish_evt_handler(struct work_struct *work)
+{
+ struct ishtp_cl_data *client_data =
+ container_of(work, struct ishtp_cl_data, work_ec_evt);
+ struct cros_ec_device *ec_dev = client_data->ec_dev;
+
+ if (cros_ec_get_next_event(ec_dev, NULL) > 0) {
+ blocking_notifier_call_chain(&ec_dev->event_notifier,
+ 0, ec_dev);
+ }
+}
+
+/**
+ * ish_send() - Send message from host to firmware
+ *
+ * @client_data: Client data instance
+ * @out_msg: Message buffer to be sent to firmware
+ * @out_size: Size of out going message
+ * @in_msg: Message buffer where the incoming data is copied. This buffer
+ * is allocated by calling
+ * @in_size: Max size of incoming message
+ *
+ * Return: Number of bytes copied in the in_msg on success, negative
+ * error code on failure.
+ */
+static int ish_send(struct ishtp_cl_data *client_data,
+ u8 *out_msg, size_t out_size,
+ u8 *in_msg, size_t in_size)
+{
+ int rv;
+ struct header *out_hdr = (struct header *)out_msg;
+ struct ishtp_cl *cros_ish_cl = client_data->cros_ish_cl;
+
+ dev_dbg(cl_data_to_dev(client_data),
+ "%s: channel=%02u status=%02u\n",
+ __func__, out_hdr->channel, out_hdr->status);
+
+ /* Setup for incoming response */
+ client_data->response.data = in_msg;
+ client_data->response.max_size = in_size;
+ client_data->response.error = 0;
+ client_data->response.received = false;
+
+ rv = ishtp_cl_send(cros_ish_cl, out_msg, out_size);
+ if (rv) {
+ dev_err(cl_data_to_dev(client_data),
+ "ishtp_cl_send error %d\n", rv);
+ return rv;
+ }
+
+ wait_event_interruptible_timeout(client_data->response.wait_queue,
+ client_data->response.received,
+ ISHTP_SEND_TIMEOUT);
+ if (!client_data->response.received) {
+ dev_err(cl_data_to_dev(client_data),
+ "Timed out for response to host message\n");
+ return -ETIMEDOUT;
+ }
+
+ if (client_data->response.error < 0)
+ return client_data->response.error;
+
+ return client_data->response.size;
+}
+
+/**
+ * process_recv() - Received and parse incoming packet
+ * @cros_ish_cl: Client instance to get stats
+ * @rb_in_proc: Host interface message buffer
+ *
+ * Parse the incoming packet. If it is a response packet then it will
+ * update per instance flags and wake up the caller waiting to for the
+ * response. If it is an event packet then it will schedule event work.
+ */
+static void process_recv(struct ishtp_cl *cros_ish_cl,
+ struct ishtp_cl_rb *rb_in_proc)
+{
+ size_t data_len = rb_in_proc->buf_idx;
+ struct ishtp_cl_data *client_data =
+ ishtp_get_client_data(cros_ish_cl);
+ struct device *dev = cl_data_to_dev(client_data);
+ struct cros_ish_in_msg *in_msg =
+ (struct cros_ish_in_msg *)rb_in_proc->buffer.data;
+
+ /* Proceed only if reset or init is not in progress */
+ if (!down_read_trylock(&init_lock)) {
+ /* Free the buffer */
+ ishtp_cl_io_rb_recycle(rb_in_proc);
+ dev_warn(dev,
+ "Host is not ready to receive incoming messages\n");
+ return;
+ }
+
+ /*
+ * All firmware messages contain a header. Check the buffer size
+ * before accessing elements inside.
+ */
+ if (!rb_in_proc->buffer.data) {
+ dev_warn(dev, "rb_in_proc->buffer.data returned null");
+ client_data->response.error = -EBADMSG;
+ goto end_error;
+ }
+
+ if (data_len < sizeof(struct header)) {
+ dev_err(dev, "data size %zu is less than header %zu\n",
+ data_len, sizeof(struct header));
+ client_data->response.error = -EMSGSIZE;
+ goto end_error;
+ }
+
+ dev_dbg(dev, "channel=%02u status=%02u\n",
+ in_msg->hdr.channel, in_msg->hdr.status);
+
+ switch (in_msg->hdr.channel) {
+ case CROS_EC_COMMAND:
+ /* Sanity check */
+ if (!client_data->response.data) {
+ dev_err(dev,
+ "Receiving buffer is null. Should be allocated by calling function\n");
+ client_data->response.error = -EINVAL;
+ goto error_wake_up;
+ }
+
+ if (client_data->response.received) {
+ dev_err(dev,
+ "Previous firmware message not yet processed\n");
+ client_data->response.error = -EINVAL;
+ goto error_wake_up;
+ }
+
+ if (data_len > client_data->response.max_size) {
+ dev_err(dev,
+ "Received buffer size %zu is larger than allocated buffer %zu\n",
+ data_len, client_data->response.max_size);
+ client_data->response.error = -EMSGSIZE;
+ goto error_wake_up;
+ }
+
+ if (in_msg->hdr.status) {
+ dev_err(dev, "firmware returned status %d\n",
+ in_msg->hdr.status);
+ client_data->response.error = -EIO;
+ goto error_wake_up;
+ }
+
+ /* Update the actual received buffer size */
+ client_data->response.size = data_len;
+
+ /*
+ * Copy the buffer received in firmware response for the
+ * calling thread.
+ */
+ memcpy(client_data->response.data,
+ rb_in_proc->buffer.data, data_len);
+
+ /* Set flag before waking up the caller */
+ client_data->response.received = true;
+error_wake_up:
+ /* Wake the calling thread */
+ wake_up_interruptible(&client_data->response.wait_queue);
+
+ break;
+
+ case CROS_MKBP_EVENT:
+ /* The event system doesn't send any data in buffer */
+ schedule_work(&client_data->work_ec_evt);
+
+ break;
+
+ default:
+ dev_err(dev, "Invalid channel=%02d\n", in_msg->hdr.channel);
+ }
+
+end_error:
+ /* Free the buffer */
+ ishtp_cl_io_rb_recycle(rb_in_proc);
+
+ up_read(&init_lock);
+}
+
+/**
+ * ish_event_cb() - bus driver callback for incoming message
+ * @cl_device: ISHTP client device for which this message is targeted.
+ *
+ * Remove the packet from the list and process the message by calling
+ * process_recv.
+ */
+static void ish_event_cb(struct ishtp_cl_device *cl_device)
+{
+ struct ishtp_cl_rb *rb_in_proc;
+ struct ishtp_cl *cros_ish_cl = ishtp_get_drvdata(cl_device);
+
+ while ((rb_in_proc = ishtp_cl_rx_get_rb(cros_ish_cl)) != NULL) {
+ /* Decide what to do with received data */
+ process_recv(cros_ish_cl, rb_in_proc);
+ }
+}
+
+/**
+ * cros_ish_init() - Init function for ISHTP client
+ * @cros_ish_cl: ISHTP client instance
+ *
+ * This function complete the initializtion of the client.
+ *
+ * Return: 0 for success, negative error code for failure.
+ */
+static int cros_ish_init(struct ishtp_cl *cros_ish_cl)
+{
+ int rv;
+ struct ishtp_device *dev;
+ struct ishtp_fw_client *fw_client;
+ struct ishtp_cl_data *client_data = ishtp_get_client_data(cros_ish_cl);
+
+ rv = ishtp_cl_link(cros_ish_cl);
+ if (rv) {
+ dev_err(cl_data_to_dev(client_data),
+ "ishtp_cl_link failed\n");
+ return rv;
+ }
+
+ dev = ishtp_get_ishtp_device(cros_ish_cl);
+
+ /* Connect to firmware client */
+ ishtp_set_tx_ring_size(cros_ish_cl, CROS_ISH_CL_TX_RING_SIZE);
+ ishtp_set_rx_ring_size(cros_ish_cl, CROS_ISH_CL_RX_RING_SIZE);
+
+ fw_client = ishtp_fw_cl_get_client(dev, &cros_ish_guid);
+ if (!fw_client) {
+ dev_err(cl_data_to_dev(client_data),
+ "ish client uuid not found\n");
+ rv = -ENOENT;
+ goto err_cl_unlink;
+ }
+
+ ishtp_cl_set_fw_client_id(cros_ish_cl,
+ ishtp_get_fw_client_id(fw_client));
+ ishtp_set_connection_state(cros_ish_cl, ISHTP_CL_CONNECTING);
+
+ rv = ishtp_cl_connect(cros_ish_cl);
+ if (rv) {
+ dev_err(cl_data_to_dev(client_data),
+ "client connect fail\n");
+ goto err_cl_unlink;
+ }
+
+ ishtp_register_event_cb(client_data->cl_device, ish_event_cb);
+ return 0;
+
+err_cl_unlink:
+ ishtp_cl_unlink(cros_ish_cl);
+ return rv;
+}
+
+/**
+ * cros_ish_deinit() - Deinit function for ISHTP client
+ * @cros_ish_cl: ISHTP client instance
+ *
+ * Unlink and free cros_ec client
+ */
+static void cros_ish_deinit(struct ishtp_cl *cros_ish_cl)
+{
+ ishtp_set_connection_state(cros_ish_cl, ISHTP_CL_DISCONNECTING);
+ ishtp_cl_disconnect(cros_ish_cl);
+ ishtp_cl_unlink(cros_ish_cl);
+ ishtp_cl_flush_queues(cros_ish_cl);
+
+ /* Disband and free all Tx and Rx client-level rings */
+ ishtp_cl_free(cros_ish_cl);
+}
+
+/**
+ * prepare_cros_ec_rx() - Check & prepare receive buffer
+ * @ec_dev: CrOS EC MFD device.
+ * @in_msg: Incoming message buffer
+ * @msg: cros_ec command used to send & receive data
+ *
+ * Return: 0 for success, negative error code for failure.
+ *
+ * Check the received buffer. Convert to cros_ec_command format.
+ */
+static int prepare_cros_ec_rx(struct cros_ec_device *ec_dev,
+ const struct cros_ish_in_msg *in_msg,
+ struct cros_ec_command *msg)
+{
+ u8 sum = 0;
+ int i, rv, offset;
+
+ /* Check response error code */
+ msg->result = in_msg->ec_response.result;
+ rv = cros_ec_check_result(ec_dev, msg);
+ if (rv < 0)
+ return rv;
+
+ if (in_msg->ec_response.data_len > msg->insize) {
+ dev_err(ec_dev->dev, "Packet too long (%d bytes, expected %d)",
+ in_msg->ec_response.data_len, msg->insize);
+ return -ENOSPC;
+ }
+
+ /* Copy response packet payload and compute checksum */
+ for (i = 0; i < sizeof(struct ec_host_response); i++)
+ sum += ((u8 *)in_msg)[IN_MSG_EC_RESPONSE_PREAMBLE + i];
+
+ offset = sizeof(struct cros_ish_in_msg);
+ for (i = 0; i < in_msg->ec_response.data_len; i++)
+ sum += msg->data[i] = ((u8 *)in_msg)[offset + i];
+
+ if (sum) {
+ dev_dbg(ec_dev->dev, "Bad received packet checksum %d\n", sum);
+ return -EBADMSG;
+ }
+
+ return 0;
+}
+
+static int cros_ec_pkt_xfer_ish(struct cros_ec_device *ec_dev,
+ struct cros_ec_command *msg)
+{
+ int rv;
+ struct ishtp_cl *cros_ish_cl = ec_dev->priv;
+ struct ishtp_cl_data *client_data = ishtp_get_client_data(cros_ish_cl);
+ struct device *dev = cl_data_to_dev(client_data);
+ struct cros_ish_in_msg *in_msg = (struct cros_ish_in_msg *)ec_dev->din;
+ struct cros_ish_out_msg *out_msg =
+ (struct cros_ish_out_msg *)ec_dev->dout;
+ size_t in_size = sizeof(struct cros_ish_in_msg) + msg->insize;
+ size_t out_size = sizeof(struct cros_ish_out_msg) + msg->outsize;
+
+ /* Sanity checks */
+ if (in_size > ec_dev->din_size) {
+ dev_err(dev,
+ "Incoming payload size %zu is too large for ec_dev->din_size %d\n",
+ in_size, ec_dev->din_size);
+ return -EMSGSIZE;
+ }
+
+ if (out_size > ec_dev->dout_size) {
+ dev_err(dev,
+ "Outgoing payload size %zu is too large for ec_dev->dout_size %d\n",
+ out_size, ec_dev->dout_size);
+ return -EMSGSIZE;
+ }
+
+ /* Proceed only if reset-init is not in progress */
+ if (!down_read_trylock(&init_lock)) {
+ dev_warn(dev,
+ "Host is not ready to send messages to ISH. Try again\n");
+ return -EAGAIN;
+ }
+
+ /* Prepare the package to be sent over ISH TP */
+ out_msg->hdr.channel = CROS_EC_COMMAND;
+ out_msg->hdr.status = 0;
+
+ ec_dev->dout += OUT_MSG_EC_REQUEST_PREAMBLE;
+ cros_ec_prepare_tx(ec_dev, msg);
+ ec_dev->dout -= OUT_MSG_EC_REQUEST_PREAMBLE;
+
+ dev_dbg(dev,
+ "out_msg: struct_ver=0x%x checksum=0x%x command=0x%x command_ver=0x%x data_len=0x%x\n",
+ out_msg->ec_request.struct_version,
+ out_msg->ec_request.checksum,
+ out_msg->ec_request.command,
+ out_msg->ec_request.command_version,
+ out_msg->ec_request.data_len);
+
+ /* Send command to ISH EC firmware and read response */
+ rv = ish_send(client_data,
+ (u8 *)out_msg, out_size,
+ (u8 *)in_msg, in_size);
+ if (rv < 0)
+ goto end_error;
+
+ rv = prepare_cros_ec_rx(ec_dev, in_msg, msg);
+ if (rv)
+ goto end_error;
+
+ rv = in_msg->ec_response.data_len;
+
+ dev_dbg(dev,
+ "in_msg: struct_ver=0x%x checksum=0x%x result=0x%x data_len=0x%x\n",
+ in_msg->ec_response.struct_version,
+ in_msg->ec_response.checksum,
+ in_msg->ec_response.result,
+ in_msg->ec_response.data_len);
+
+end_error:
+ if (msg->command == EC_CMD_REBOOT_EC)
+ msleep(EC_REBOOT_DELAY_MS);
+
+ up_read(&init_lock);
+
+ return rv;
+}
+
+static int cros_ec_dev_init(struct ishtp_cl_data *client_data)
+{
+ struct cros_ec_device *ec_dev;
+ struct device *dev = cl_data_to_dev(client_data);
+
+ ec_dev = devm_kzalloc(dev, sizeof(*ec_dev), GFP_KERNEL);
+ if (!ec_dev)
+ return -ENOMEM;
+
+ client_data->ec_dev = ec_dev;
+ dev->driver_data = ec_dev;
+
+ ec_dev->dev = dev;
+ ec_dev->priv = client_data->cros_ish_cl;
+ ec_dev->cmd_xfer = NULL;
+ ec_dev->pkt_xfer = cros_ec_pkt_xfer_ish;
+ ec_dev->phys_name = dev_name(dev);
+ ec_dev->din_size = sizeof(struct cros_ish_in_msg) +
+ sizeof(struct ec_response_get_protocol_info);
+ ec_dev->dout_size = sizeof(struct cros_ish_out_msg);
+
+ return cros_ec_register(ec_dev);
+}
+
+static void reset_handler(struct work_struct *work)
+{
+ int rv;
+ struct device *dev;
+ struct ishtp_cl *cros_ish_cl;
+ struct ishtp_cl_device *cl_device;
+ struct ishtp_cl_data *client_data =
+ container_of(work, struct ishtp_cl_data, work_ishtp_reset);
+
+ /* Lock for reset to complete */
+ down_write(&init_lock);
+
+ cros_ish_cl = client_data->cros_ish_cl;
+ cl_device = client_data->cl_device;
+
+ /* Unlink, flush queues & start again */
+ ishtp_cl_unlink(cros_ish_cl);
+ ishtp_cl_flush_queues(cros_ish_cl);
+ ishtp_cl_free(cros_ish_cl);
+
+ cros_ish_cl = ishtp_cl_allocate(cl_device);
+ if (!cros_ish_cl) {
+ up_write(&init_lock);
+ return;
+ }
+
+ ishtp_set_drvdata(cl_device, cros_ish_cl);
+ ishtp_set_client_data(cros_ish_cl, client_data);
+ client_data->cros_ish_cl = cros_ish_cl;
+
+ rv = cros_ish_init(cros_ish_cl);
+ if (rv) {
+ ishtp_cl_free(cros_ish_cl);
+ dev_err(cl_data_to_dev(client_data), "Reset Failed\n");
+ up_write(&init_lock);
+ return;
+ }
+
+ /* Refresh ec_dev device pointers */
+ client_data->ec_dev->priv = client_data->cros_ish_cl;
+ dev = cl_data_to_dev(client_data);
+ dev->driver_data = client_data->ec_dev;
+
+ dev_info(cl_data_to_dev(client_data), "Chrome EC ISH reset done\n");
+
+ up_write(&init_lock);
+}
+
+/**
+ * cros_ec_ishtp_probe() - ISHTP client driver probe callback
+ * @cl_device: ISHTP client device instance
+ *
+ * Return: 0 for success, negative error code for failure.
+ */
+static int cros_ec_ishtp_probe(struct ishtp_cl_device *cl_device)
+{
+ int rv;
+ struct ishtp_cl *cros_ish_cl;
+ struct ishtp_cl_data *client_data =
+ devm_kzalloc(ishtp_device(cl_device),
+ sizeof(*client_data), GFP_KERNEL);
+ if (!client_data)
+ return -ENOMEM;
+
+ /* Lock for initialization to complete */
+ down_write(&init_lock);
+
+ cros_ish_cl = ishtp_cl_allocate(cl_device);
+ if (!cros_ish_cl) {
+ rv = -ENOMEM;
+ goto end_ishtp_cl_alloc_error;
+ }
+
+ ishtp_set_drvdata(cl_device, cros_ish_cl);
+ ishtp_set_client_data(cros_ish_cl, client_data);
+ client_data->cros_ish_cl = cros_ish_cl;
+ client_data->cl_device = cl_device;
+
+ init_waitqueue_head(&client_data->response.wait_queue);
+
+ INIT_WORK(&client_data->work_ishtp_reset,
+ reset_handler);
+ INIT_WORK(&client_data->work_ec_evt,
+ ish_evt_handler);
+
+ rv = cros_ish_init(cros_ish_cl);
+ if (rv)
+ goto end_ishtp_cl_init_error;
+
+ ishtp_get_device(cl_device);
+
+ up_write(&init_lock);
+
+ /* Register croc_ec_dev mfd */
+ rv = cros_ec_dev_init(client_data);
+ if (rv)
+ goto end_cros_ec_dev_init_error;
+
+ return 0;
+
+end_cros_ec_dev_init_error:
+ ishtp_set_connection_state(cros_ish_cl, ISHTP_CL_DISCONNECTING);
+ ishtp_cl_disconnect(cros_ish_cl);
+ ishtp_cl_unlink(cros_ish_cl);
+ ishtp_cl_flush_queues(cros_ish_cl);
+ ishtp_put_device(cl_device);
+end_ishtp_cl_init_error:
+ ishtp_cl_free(cros_ish_cl);
+end_ishtp_cl_alloc_error:
+ up_write(&init_lock);
+ return rv;
+}
+
+/**
+ * cros_ec_ishtp_remove() - ISHTP client driver remove callback
+ * @cl_device: ISHTP client device instance
+ *
+ * Return: 0
+ */
+static int cros_ec_ishtp_remove(struct ishtp_cl_device *cl_device)
+{
+ struct ishtp_cl *cros_ish_cl = ishtp_get_drvdata(cl_device);
+ struct ishtp_cl_data *client_data = ishtp_get_client_data(cros_ish_cl);
+
+ cancel_work_sync(&client_data->work_ishtp_reset);
+ cancel_work_sync(&client_data->work_ec_evt);
+ cros_ish_deinit(cros_ish_cl);
+ ishtp_put_device(cl_device);
+
+ return 0;
+}
+
+/**
+ * cros_ec_ishtp_reset() - ISHTP client driver reset callback
+ * @cl_device: ISHTP client device instance
+ *
+ * Return: 0
+ */
+static int cros_ec_ishtp_reset(struct ishtp_cl_device *cl_device)
+{
+ struct ishtp_cl *cros_ish_cl = ishtp_get_drvdata(cl_device);
+ struct ishtp_cl_data *client_data = ishtp_get_client_data(cros_ish_cl);
+
+ schedule_work(&client_data->work_ishtp_reset);
+
+ return 0;
+}
+
+/**
+ * cros_ec_ishtp_suspend() - ISHTP client driver suspend callback
+ * @device: device instance
+ *
+ * Return: 0 for success, negative error code for failure.
+ */
+static int __maybe_unused cros_ec_ishtp_suspend(struct device *device)
+{
+ struct ishtp_cl_device *cl_device = dev_get_drvdata(device);
+ struct ishtp_cl *cros_ish_cl = ishtp_get_drvdata(cl_device);
+ struct ishtp_cl_data *client_data = ishtp_get_client_data(cros_ish_cl);
+
+ return cros_ec_suspend(client_data->ec_dev);
+}
+
+/**
+ * cros_ec_ishtp_resume() - ISHTP client driver resume callback
+ * @device: device instance
+ *
+ * Return: 0 for success, negative error code for failure.
+ */
+static int __maybe_unused cros_ec_ishtp_resume(struct device *device)
+{
+ struct ishtp_cl_device *cl_device = dev_get_drvdata(device);
+ struct ishtp_cl *cros_ish_cl = ishtp_get_drvdata(cl_device);
+ struct ishtp_cl_data *client_data = ishtp_get_client_data(cros_ish_cl);
+
+ return cros_ec_resume(client_data->ec_dev);
+}
+
+static SIMPLE_DEV_PM_OPS(cros_ec_ishtp_pm_ops, cros_ec_ishtp_suspend,
+ cros_ec_ishtp_resume);
+
+static struct ishtp_cl_driver cros_ec_ishtp_driver = {
+ .name = "cros_ec_ishtp",
+ .guid = &cros_ish_guid,
+ .probe = cros_ec_ishtp_probe,
+ .remove = cros_ec_ishtp_remove,
+ .reset = cros_ec_ishtp_reset,
+ .driver = {
+ .pm = &cros_ec_ishtp_pm_ops,
+ },
+};
+
+static int __init cros_ec_ishtp_mod_init(void)
+{
+ return ishtp_cl_driver_register(&cros_ec_ishtp_driver, THIS_MODULE);
+}
+
+static void __exit cros_ec_ishtp_mod_exit(void)
+{
+ ishtp_cl_driver_unregister(&cros_ec_ishtp_driver);
+}
+
+module_init(cros_ec_ishtp_mod_init);
+module_exit(cros_ec_ishtp_mod_exit);
+
+MODULE_DESCRIPTION("ChromeOS EC ISHTP Client Driver");
+MODULE_AUTHOR("Rushikesh S Kadam <rushikesh.s.kadam@intel.com>");
+
+MODULE_LICENSE("GPL v2");
+MODULE_ALIAS("ishtp:*");
diff --git a/drivers/platform/chrome/cros_ec_lightbar.c b/drivers/platform/chrome/cros_ec_lightbar.c
index d30a6650b0b5591c6a691d303da86af2aa7ef4f0..609598bbb6c3218d6c25899fdd20e3302322fdc5 100644
--- a/drivers/platform/chrome/cros_ec_lightbar.c
+++ b/drivers/platform/chrome/cros_ec_lightbar.c
@@ -547,7 +547,7 @@ static struct attribute *__lb_cmds_attrs[] = {
NULL,
};
-struct attribute_group cros_ec_lightbar_attr_group = {
+static struct attribute_group cros_ec_lightbar_attr_group = {
.name = "lightbar",
.attrs = __lb_cmds_attrs,
};
@@ -600,7 +600,7 @@ static int cros_ec_lightbar_remove(struct platform_device *pd)
static int __maybe_unused cros_ec_lightbar_resume(struct device *dev)
{
- struct cros_ec_dev *ec_dev = dev_get_drvdata(dev);
+ struct cros_ec_dev *ec_dev = dev_get_drvdata(dev->parent);
if (userspace_control)
return 0;
@@ -610,7 +610,7 @@ static int __maybe_unused cros_ec_lightbar_resume(struct device *dev)
static int __maybe_unused cros_ec_lightbar_suspend(struct device *dev)
{
- struct cros_ec_dev *ec_dev = dev_get_drvdata(dev);
+ struct cros_ec_dev *ec_dev = dev_get_drvdata(dev->parent);
if (userspace_control)
return 0;
diff --git a/drivers/platform/chrome/cros_ec_lpc.c b/drivers/platform/chrome/cros_ec_lpc.c
index c9c240fbe7c63c083356f00eb56982923388ae87..2c44c7f3322a395f3dc9ecd4c116402059c39937 100644
--- a/drivers/platform/chrome/cros_ec_lpc.c
+++ b/drivers/platform/chrome/cros_ec_lpc.c
@@ -23,7 +23,7 @@
#include <linux/printk.h>
#include <linux/suspend.h>
-#include "cros_ec_lpc_reg.h"
+#include "cros_ec_lpc_mec.h"
#define DRV_NAME "cros_ec_lpcs"
#define ACPI_DRV_NAME "GOOG0004"
@@ -31,6 +31,96 @@
/* True if ACPI device is present */
static bool cros_ec_lpc_acpi_device_found;
+/**
+ * struct lpc_driver_ops - LPC driver operations
+ * @read: Copy length bytes from EC address offset into buffer dest. Returns
+ * the 8-bit checksum of all bytes read.
+ * @write: Copy length bytes from buffer msg into EC address offset. Returns
+ * the 8-bit checksum of all bytes written.
+ */
+struct lpc_driver_ops {
+ u8 (*read)(unsigned int offset, unsigned int length, u8 *dest);
+ u8 (*write)(unsigned int offset, unsigned int length, const u8 *msg);
+};
+
+static struct lpc_driver_ops cros_ec_lpc_ops = { };
+
+/*
+ * A generic instance of the read function of struct lpc_driver_ops, used for
+ * the LPC EC.
+ */
+static u8 cros_ec_lpc_read_bytes(unsigned int offset, unsigned int length,
+ u8 *dest)
+{
+ int sum = 0;
+ int i;
+
+ for (i = 0; i < length; ++i) {
+ dest[i] = inb(offset + i);
+ sum += dest[i];
+ }
+
+ /* Return checksum of all bytes read */
+ return sum;
+}
+
+/*
+ * A generic instance of the write function of struct lpc_driver_ops, used for
+ * the LPC EC.
+ */
+static u8 cros_ec_lpc_write_bytes(unsigned int offset, unsigned int length,
+ const u8 *msg)
+{
+ int sum = 0;
+ int i;
+
+ for (i = 0; i < length; ++i) {
+ outb(msg[i], offset + i);
+ sum += msg[i];
+ }
+
+ /* Return checksum of all bytes written */
+ return sum;
+}
+
+/*
+ * An instance of the read function of struct lpc_driver_ops, used for the
+ * MEC variant of LPC EC.
+ */
+static u8 cros_ec_lpc_mec_read_bytes(unsigned int offset, unsigned int length,
+ u8 *dest)
+{
+ int in_range = cros_ec_lpc_mec_in_range(offset, length);
+
+ if (in_range < 0)
+ return 0;
+
+ return in_range ?
+ cros_ec_lpc_io_bytes_mec(MEC_IO_READ,
+ offset - EC_HOST_CMD_REGION0,
+ length, dest) :
+ cros_ec_lpc_read_bytes(offset, length, dest);
+}
+
+/*
+ * An instance of the write function of struct lpc_driver_ops, used for the
+ * MEC variant of LPC EC.
+ */
+static u8 cros_ec_lpc_mec_write_bytes(unsigned int offset, unsigned int length,
+ const u8 *msg)
+{
+ int in_range = cros_ec_lpc_mec_in_range(offset, length);
+
+ if (in_range < 0)
+ return 0;
+
+ return in_range ?
+ cros_ec_lpc_io_bytes_mec(MEC_IO_WRITE,
+ offset - EC_HOST_CMD_REGION0,
+ length, (u8 *)msg) :
+ cros_ec_lpc_write_bytes(offset, length, msg);
+}
+
static int ec_response_timed_out(void)
{
unsigned long one_second = jiffies + HZ;
@@ -38,7 +128,7 @@ static int ec_response_timed_out(void)
usleep_range(200, 300);
do {
- if (!(cros_ec_lpc_read_bytes(EC_LPC_ADDR_HOST_CMD, 1, &data) &
+ if (!(cros_ec_lpc_ops.read(EC_LPC_ADDR_HOST_CMD, 1, &data) &
EC_LPC_STATUS_BUSY_MASK))
return 0;
usleep_range(100, 200);
@@ -58,11 +148,11 @@ static int cros_ec_pkt_xfer_lpc(struct cros_ec_device *ec,
ret = cros_ec_prepare_tx(ec, msg);
/* Write buffer */
- cros_ec_lpc_write_bytes(EC_LPC_ADDR_HOST_PACKET, ret, ec->dout);
+ cros_ec_lpc_ops.write(EC_LPC_ADDR_HOST_PACKET, ret, ec->dout);
/* Here we go */
sum = EC_COMMAND_PROTOCOL_3;
- cros_ec_lpc_write_bytes(EC_LPC_ADDR_HOST_CMD, 1, &sum);
+ cros_ec_lpc_ops.write(EC_LPC_ADDR_HOST_CMD, 1, &sum);
if (ec_response_timed_out()) {
dev_warn(ec->dev, "EC responsed timed out\n");
@@ -71,15 +161,15 @@ static int cros_ec_pkt_xfer_lpc(struct cros_ec_device *ec,
}
/* Check result */
- msg->result = cros_ec_lpc_read_bytes(EC_LPC_ADDR_HOST_DATA, 1, &sum);
+ msg->result = cros_ec_lpc_ops.read(EC_LPC_ADDR_HOST_DATA, 1, &sum);
ret = cros_ec_check_result(ec, msg);
if (ret)
goto done;
/* Read back response */
dout = (u8 *)&response;
- sum = cros_ec_lpc_read_bytes(EC_LPC_ADDR_HOST_PACKET, sizeof(response),
- dout);
+ sum = cros_ec_lpc_ops.read(EC_LPC_ADDR_HOST_PACKET, sizeof(response),
+ dout);
msg->result = response.result;
@@ -92,9 +182,9 @@ static int cros_ec_pkt_xfer_lpc(struct cros_ec_device *ec,
}
/* Read response and process checksum */
- sum += cros_ec_lpc_read_bytes(EC_LPC_ADDR_HOST_PACKET +
- sizeof(response), response.data_len,
- msg->data);
+ sum += cros_ec_lpc_ops.read(EC_LPC_ADDR_HOST_PACKET +
+ sizeof(response), response.data_len,
+ msg->data);
if (sum) {
dev_err(ec->dev,
@@ -134,17 +224,17 @@ static int cros_ec_cmd_xfer_lpc(struct cros_ec_device *ec,
sum = msg->command + args.flags + args.command_version + args.data_size;
/* Copy data and update checksum */
- sum += cros_ec_lpc_write_bytes(EC_LPC_ADDR_HOST_PARAM, msg->outsize,
- msg->data);
+ sum += cros_ec_lpc_ops.write(EC_LPC_ADDR_HOST_PARAM, msg->outsize,
+ msg->data);
/* Finalize checksum and write args */
args.checksum = sum;
- cros_ec_lpc_write_bytes(EC_LPC_ADDR_HOST_ARGS, sizeof(args),
- (u8 *)&args);
+ cros_ec_lpc_ops.write(EC_LPC_ADDR_HOST_ARGS, sizeof(args),
+ (u8 *)&args);
/* Here we go */
sum = msg->command;
- cros_ec_lpc_write_bytes(EC_LPC_ADDR_HOST_CMD, 1, &sum);
+ cros_ec_lpc_ops.write(EC_LPC_ADDR_HOST_CMD, 1, &sum);
if (ec_response_timed_out()) {
dev_warn(ec->dev, "EC responsed timed out\n");
@@ -153,14 +243,13 @@ static int cros_ec_cmd_xfer_lpc(struct cros_ec_device *ec,
}
/* Check result */
- msg->result = cros_ec_lpc_read_bytes(EC_LPC_ADDR_HOST_DATA, 1, &sum);
+ msg->result = cros_ec_lpc_ops.read(EC_LPC_ADDR_HOST_DATA, 1, &sum);
ret = cros_ec_check_result(ec, msg);
if (ret)
goto done;
/* Read back args */
- cros_ec_lpc_read_bytes(EC_LPC_ADDR_HOST_ARGS, sizeof(args),
- (u8 *)&args);
+ cros_ec_lpc_ops.read(EC_LPC_ADDR_HOST_ARGS, sizeof(args), (u8 *)&args);
if (args.data_size > msg->insize) {
dev_err(ec->dev,
@@ -174,8 +263,8 @@ static int cros_ec_cmd_xfer_lpc(struct cros_ec_device *ec,
sum = msg->command + args.flags + args.command_version + args.data_size;
/* Read response and update checksum */
- sum += cros_ec_lpc_read_bytes(EC_LPC_ADDR_HOST_PARAM, args.data_size,
- msg->data);
+ sum += cros_ec_lpc_ops.read(EC_LPC_ADDR_HOST_PARAM, args.data_size,
+ msg->data);
/* Verify checksum */
if (args.checksum != sum) {
@@ -205,13 +294,13 @@ static int cros_ec_lpc_readmem(struct cros_ec_device *ec, unsigned int offset,
/* fixed length */
if (bytes) {
- cros_ec_lpc_read_bytes(EC_LPC_ADDR_MEMMAP + offset, bytes, s);
+ cros_ec_lpc_ops.read(EC_LPC_ADDR_MEMMAP + offset, bytes, s);
return bytes;
}
/* string */
for (; i < EC_MEMMAP_SIZE; i++, s++) {
- cros_ec_lpc_read_bytes(EC_LPC_ADDR_MEMMAP + i, 1, s);
+ cros_ec_lpc_ops.read(EC_LPC_ADDR_MEMMAP + i, 1, s);
cnt++;
if (!*s)
break;
@@ -248,10 +337,25 @@ static int cros_ec_lpc_probe(struct platform_device *pdev)
return -EBUSY;
}
- cros_ec_lpc_read_bytes(EC_LPC_ADDR_MEMMAP + EC_MEMMAP_ID, 2, buf);
+ /*
+ * Read the mapped ID twice, the first one is assuming the
+ * EC is a Microchip Embedded Controller (MEC) variant, if the
+ * protocol fails, fallback to the non MEC variant and try to
+ * read again the ID.
+ */
+ cros_ec_lpc_ops.read = cros_ec_lpc_mec_read_bytes;
+ cros_ec_lpc_ops.write = cros_ec_lpc_mec_write_bytes;
+ cros_ec_lpc_ops.read(EC_LPC_ADDR_MEMMAP + EC_MEMMAP_ID, 2, buf);
if (buf[0] != 'E' || buf[1] != 'C') {
- dev_err(dev, "EC ID not detected\n");
- return -ENODEV;
+ /* Re-assign read/write operations for the non MEC variant */
+ cros_ec_lpc_ops.read = cros_ec_lpc_read_bytes;
+ cros_ec_lpc_ops.write = cros_ec_lpc_write_bytes;
+ cros_ec_lpc_ops.read(EC_LPC_ADDR_MEMMAP + EC_MEMMAP_ID, 2,
+ buf);
+ if (buf[0] != 'E' || buf[1] != 'C') {
+ dev_err(dev, "EC ID not detected\n");
+ return -ENODEV;
+ }
}
if (!devm_request_region(dev, EC_HOST_CMD_REGION0,
@@ -405,7 +509,7 @@ static int cros_ec_lpc_resume(struct device *dev)
}
#endif
-const struct dev_pm_ops cros_ec_lpc_pm_ops = {
+static const struct dev_pm_ops cros_ec_lpc_pm_ops = {
SET_LATE_SYSTEM_SLEEP_PM_OPS(cros_ec_lpc_suspend, cros_ec_lpc_resume)
};
@@ -446,13 +550,14 @@ static int __init cros_ec_lpc_init(void)
return -ENODEV;
}
- cros_ec_lpc_reg_init();
+ cros_ec_lpc_mec_init(EC_HOST_CMD_REGION0,
+ EC_LPC_ADDR_MEMMAP + EC_MEMMAP_SIZE);
/* Register the driver */
ret = platform_driver_register(&cros_ec_lpc_driver);
if (ret) {
pr_err(DRV_NAME ": can't register driver: %d\n", ret);
- cros_ec_lpc_reg_destroy();
+ cros_ec_lpc_mec_destroy();
return ret;
}
@@ -462,7 +567,7 @@ static int __init cros_ec_lpc_init(void)
if (ret) {
pr_err(DRV_NAME ": can't register device: %d\n", ret);
platform_driver_unregister(&cros_ec_lpc_driver);
- cros_ec_lpc_reg_destroy();
+ cros_ec_lpc_mec_destroy();
}
}
@@ -474,7 +579,7 @@ static void __exit cros_ec_lpc_exit(void)
if (!cros_ec_lpc_acpi_device_found)
platform_device_unregister(&cros_ec_lpc_device);
platform_driver_unregister(&cros_ec_lpc_driver);
- cros_ec_lpc_reg_destroy();
+ cros_ec_lpc_mec_destroy();
}
module_init(cros_ec_lpc_init);
diff --git a/drivers/platform/chrome/cros_ec_lpc_mec.c b/drivers/platform/chrome/cros_ec_lpc_mec.c
index d8890bafb55d2a3f01ad4e96b991cf382d2678b7..9035b17e8c869ab08aa97b31298b86236da14277 100644
--- a/drivers/platform/chrome/cros_ec_lpc_mec.c
+++ b/drivers/platform/chrome/cros_ec_lpc_mec.c
@@ -17,12 +17,10 @@
static struct mutex io_mutex;
static u16 mec_emi_base, mec_emi_end;
-/*
- * cros_ec_lpc_mec_emi_write_address
- *
- * Initialize EMI read / write at a given address.
+/**
+ * cros_ec_lpc_mec_emi_write_address() - Initialize EMI at a given address.
*
- * @addr: Starting read / write address
+ * @addr: Starting read / write address
* @access_type: Type of access, typically 32-bit auto-increment
*/
static void cros_ec_lpc_mec_emi_write_address(u16 addr,
@@ -61,15 +59,15 @@ int cros_ec_lpc_mec_in_range(unsigned int offset, unsigned int length)
return 0;
}
-/*
- * cros_ec_lpc_io_bytes_mec - Read / write bytes to MEC EMI port
+/**
+ * cros_ec_lpc_io_bytes_mec() - Read / write bytes to MEC EMI port.
*
* @io_type: MEC_IO_READ or MEC_IO_WRITE, depending on request
* @offset: Base read / write address
* @length: Number of bytes to read / write
* @buf: Destination / source buffer
*
- * @return 8-bit checksum of all bytes read / written
+ * Return: 8-bit checksum of all bytes read / written
*/
u8 cros_ec_lpc_io_bytes_mec(enum cros_ec_lpc_mec_io_type io_type,
unsigned int offset, unsigned int length,
diff --git a/drivers/platform/chrome/cros_ec_lpc_reg.c b/drivers/platform/chrome/cros_ec_lpc_reg.c
deleted file mode 100644
index 0f5cd0ac8b49eb4e04171a10825920519181d7e1..0000000000000000000000000000000000000000
--- a/drivers/platform/chrome/cros_ec_lpc_reg.c
+++ /dev/null
@@ -1,101 +0,0 @@
-// SPDX-License-Identifier: GPL-2.0
-// LPC interface for ChromeOS Embedded Controller
-//
-// Copyright (C) 2016 Google, Inc
-
-#include <linux/io.h>
-#include <linux/mfd/cros_ec.h>
-#include <linux/mfd/cros_ec_commands.h>
-
-#include "cros_ec_lpc_mec.h"
-
-static u8 lpc_read_bytes(unsigned int offset, unsigned int length, u8 *dest)
-{
- int i;
- int sum = 0;
-
- for (i = 0; i < length; ++i) {
- dest[i] = inb(offset + i);
- sum += dest[i];
- }
-
- /* Return checksum of all bytes read */
- return sum;
-}
-
-static u8 lpc_write_bytes(unsigned int offset, unsigned int length, u8 *msg)
-{
- int i;
- int sum = 0;
-
- for (i = 0; i < length; ++i) {
- outb(msg[i], offset + i);
- sum += msg[i];
- }
-
- /* Return checksum of all bytes written */
- return sum;
-}
-
-#ifdef CONFIG_CROS_EC_LPC_MEC
-
-u8 cros_ec_lpc_read_bytes(unsigned int offset, unsigned int length, u8 *dest)
-{
- int in_range = cros_ec_lpc_mec_in_range(offset, length);
-
- if (in_range < 0)
- return 0;
-
- return in_range ?
- cros_ec_lpc_io_bytes_mec(MEC_IO_READ,
- offset - EC_HOST_CMD_REGION0,
- length, dest) :
- lpc_read_bytes(offset, length, dest);
-}
-
-u8 cros_ec_lpc_write_bytes(unsigned int offset, unsigned int length, u8 *msg)
-{
- int in_range = cros_ec_lpc_mec_in_range(offset, length);
-
- if (in_range < 0)
- return 0;
-
- return in_range ?
- cros_ec_lpc_io_bytes_mec(MEC_IO_WRITE,
- offset - EC_HOST_CMD_REGION0,
- length, msg) :
- lpc_write_bytes(offset, length, msg);
-}
-
-void cros_ec_lpc_reg_init(void)
-{
- cros_ec_lpc_mec_init(EC_HOST_CMD_REGION0,
- EC_LPC_ADDR_MEMMAP + EC_MEMMAP_SIZE);
-}
-
-void cros_ec_lpc_reg_destroy(void)
-{
- cros_ec_lpc_mec_destroy();
-}
-
-#else /* CONFIG_CROS_EC_LPC_MEC */
-
-u8 cros_ec_lpc_read_bytes(unsigned int offset, unsigned int length, u8 *dest)
-{
- return lpc_read_bytes(offset, length, dest);
-}
-
-u8 cros_ec_lpc_write_bytes(unsigned int offset, unsigned int length, u8 *msg)
-{
- return lpc_write_bytes(offset, length, msg);
-}
-
-void cros_ec_lpc_reg_init(void)
-{
-}
-
-void cros_ec_lpc_reg_destroy(void)
-{
-}
-
-#endif /* CONFIG_CROS_EC_LPC_MEC */
diff --git a/drivers/platform/chrome/cros_ec_lpc_reg.h b/drivers/platform/chrome/cros_ec_lpc_reg.h
deleted file mode 100644
index 416fd257218299fb398c93a8173aecc96d678657..0000000000000000000000000000000000000000
--- a/drivers/platform/chrome/cros_ec_lpc_reg.h
+++ /dev/null
@@ -1,45 +0,0 @@
-/* SPDX-License-Identifier: GPL-2.0 */
-/*
- * LPC interface for ChromeOS Embedded Controller
- *
- * Copyright (C) 2016 Google, Inc
- */
-
-#ifndef __CROS_EC_LPC_REG_H
-#define __CROS_EC_LPC_REG_H
-
-/**
- * cros_ec_lpc_read_bytes - Read bytes from a given LPC-mapped address.
- * Returns 8-bit checksum of all bytes read.
- *
- * @offset: Base read address
- * @length: Number of bytes to read
- * @dest: Destination buffer
- */
-u8 cros_ec_lpc_read_bytes(unsigned int offset, unsigned int length, u8 *dest);
-
-/**
- * cros_ec_lpc_write_bytes - Write bytes to a given LPC-mapped address.
- * Returns 8-bit checksum of all bytes written.
- *
- * @offset: Base write address
- * @length: Number of bytes to write
- * @msg: Write data buffer
- */
-u8 cros_ec_lpc_write_bytes(unsigned int offset, unsigned int length, u8 *msg);
-
-/**
- * cros_ec_lpc_reg_init
- *
- * Initialize register I/O.
- */
-void cros_ec_lpc_reg_init(void);
-
-/**
- * cros_ec_lpc_reg_destroy
- *
- * Cleanup reg I/O.
- */
-void cros_ec_lpc_reg_destroy(void);
-
-#endif /* __CROS_EC_LPC_REG_H */
diff --git a/drivers/platform/chrome/cros_ec_spi.c b/drivers/platform/chrome/cros_ec_spi.c
index 8e9451720e73f59746642e6636d533b8ded46cef..006a8ff640573fa56e42a9c421cfd8f6664f5cd4 100644
--- a/drivers/platform/chrome/cros_ec_spi.c
+++ b/drivers/platform/chrome/cros_ec_spi.c
@@ -12,7 +12,7 @@
#include <linux/platform_device.h>
#include <linux/slab.h>
#include <linux/spi/spi.h>
-
+#include <uapi/linux/sched/types.h>
/* The header byte, which follows the preamble */
#define EC_MSG_HEADER 0xec
@@ -67,12 +67,14 @@
* is sent when we want to turn on CS at the start of a transaction.
* @end_of_msg_delay: used to set the delay_usecs on the spi_transfer that
* is sent when we want to turn off CS at the end of a transaction.
+ * @high_pri_worker: Used to schedule high priority work.
*/
struct cros_ec_spi {
struct spi_device *spi;
s64 last_transfer_ns;
unsigned int start_of_msg_delay;
unsigned int end_of_msg_delay;
+ struct kthread_worker *high_pri_worker;
};
typedef int (*cros_ec_xfer_fn_t) (struct cros_ec_device *ec_dev,
@@ -89,7 +91,7 @@ typedef int (*cros_ec_xfer_fn_t) (struct cros_ec_device *ec_dev,
*/
struct cros_ec_xfer_work_params {
- struct work_struct work;
+ struct kthread_work work;
cros_ec_xfer_fn_t fn;
struct cros_ec_device *ec_dev;
struct cros_ec_command *ec_msg;
@@ -632,7 +634,7 @@ static int do_cros_ec_cmd_xfer_spi(struct cros_ec_device *ec_dev,
return ret;
}
-static void cros_ec_xfer_high_pri_work(struct work_struct *work)
+static void cros_ec_xfer_high_pri_work(struct kthread_work *work)
{
struct cros_ec_xfer_work_params *params;
@@ -644,12 +646,14 @@ static int cros_ec_xfer_high_pri(struct cros_ec_device *ec_dev,
struct cros_ec_command *ec_msg,
cros_ec_xfer_fn_t fn)
{
- struct cros_ec_xfer_work_params params;
-
- INIT_WORK_ONSTACK(¶ms.work, cros_ec_xfer_high_pri_work);
- params.ec_dev = ec_dev;
- params.ec_msg = ec_msg;
- params.fn = fn;
+ struct cros_ec_spi *ec_spi = ec_dev->priv;
+ struct cros_ec_xfer_work_params params = {
+ .work = KTHREAD_WORK_INIT(params.work,
+ cros_ec_xfer_high_pri_work),
+ .ec_dev = ec_dev,
+ .ec_msg = ec_msg,
+ .fn = fn,
+ };
/*
* This looks a bit ridiculous. Why do the work on a
@@ -660,9 +664,8 @@ static int cros_ec_xfer_high_pri(struct cros_ec_device *ec_dev,
* context switched out for too long and the EC giving up on
* the transfer.
*/
- queue_work(system_highpri_wq, ¶ms.work);
- flush_work(¶ms.work);
- destroy_work_on_stack(¶ms.work);
+ kthread_queue_work(ec_spi->high_pri_worker, ¶ms.work);
+ kthread_flush_work(¶ms.work);
return params.ret;
}
@@ -694,6 +697,40 @@ static void cros_ec_spi_dt_probe(struct cros_ec_spi *ec_spi, struct device *dev)
ec_spi->end_of_msg_delay = val;
}
+static void cros_ec_spi_high_pri_release(void *worker)
+{
+ kthread_destroy_worker(worker);
+}
+
+static int cros_ec_spi_devm_high_pri_alloc(struct device *dev,
+ struct cros_ec_spi *ec_spi)
+{
+ struct sched_param sched_priority = {
+ .sched_priority = MAX_RT_PRIO - 1,
+ };
+ int err;
+
+ ec_spi->high_pri_worker =
+ kthread_create_worker(0, "cros_ec_spi_high_pri");
+
+ if (IS_ERR(ec_spi->high_pri_worker)) {
+ err = PTR_ERR(ec_spi->high_pri_worker);
+ dev_err(dev, "Can't create cros_ec high pri worker: %d\n", err);
+ return err;
+ }
+
+ err = devm_add_action_or_reset(dev, cros_ec_spi_high_pri_release,
+ ec_spi->high_pri_worker);
+ if (err)
+ return err;
+
+ err = sched_setscheduler_nocheck(ec_spi->high_pri_worker->task,
+ SCHED_FIFO, &sched_priority);
+ if (err)
+ dev_err(dev, "Can't set cros_ec high pri priority: %d\n", err);
+ return err;
+}
+
static int cros_ec_spi_probe(struct spi_device *spi)
{
struct device *dev = &spi->dev;
@@ -703,6 +740,7 @@ static int cros_ec_spi_probe(struct spi_device *spi)
spi->bits_per_word = 8;
spi->mode = SPI_MODE_0;
+ spi->rt = true;
err = spi_setup(spi);
if (err < 0)
return err;
@@ -732,6 +770,10 @@ static int cros_ec_spi_probe(struct spi_device *spi)
ec_spi->last_transfer_ns = ktime_get_ns();
+ err = cros_ec_spi_devm_high_pri_alloc(dev, ec_spi);
+ if (err)
+ return err;
+
err = cros_ec_register(ec_dev);
if (err) {
dev_err(dev, "cannot register EC\n");
@@ -777,7 +819,7 @@ MODULE_DEVICE_TABLE(spi, cros_ec_spi_id);
static struct spi_driver cros_ec_driver_spi = {
.driver = {
.name = "cros-ec-spi",
- .of_match_table = of_match_ptr(cros_ec_spi_of_match),
+ .of_match_table = cros_ec_spi_of_match,
.pm = &cros_ec_spi_pm_ops,
},
.probe = cros_ec_spi_probe,
diff --git a/drivers/platform/chrome/cros_ec_sysfs.c b/drivers/platform/chrome/cros_ec_sysfs.c
index fe0b7614ae1b408647cc6d93e34cdfb0dcdc5f8f..3edb237bf8ed0469169cfd511f6728ad92a26221 100644
--- a/drivers/platform/chrome/cros_ec_sysfs.c
+++ b/drivers/platform/chrome/cros_ec_sysfs.c
@@ -335,7 +335,7 @@ static umode_t cros_ec_ctrl_visible(struct kobject *kobj,
return a->mode;
}
-struct attribute_group cros_ec_attr_group = {
+static struct attribute_group cros_ec_attr_group = {
.attrs = __ec_attrs,
.is_visible = cros_ec_ctrl_visible,
};
diff --git a/drivers/platform/chrome/cros_ec_vbc.c b/drivers/platform/chrome/cros_ec_vbc.c
index 8392a1ec33a7faec1a1fe0b013cfebacf8f8b8ba..2aaefed87eb43f8c7582ce595a3b2500830e1895 100644
--- a/drivers/platform/chrome/cros_ec_vbc.c
+++ b/drivers/platform/chrome/cros_ec_vbc.c
@@ -101,7 +101,7 @@ static struct bin_attribute *cros_ec_vbc_bin_attrs[] = {
NULL
};
-struct attribute_group cros_ec_vbc_attr_group = {
+static struct attribute_group cros_ec_vbc_attr_group = {
.name = "vbc",
.bin_attrs = cros_ec_vbc_bin_attrs,
};
diff --git a/drivers/platform/chrome/wilco_ec/Kconfig b/drivers/platform/chrome/wilco_ec/Kconfig
index fd29cbfd3d5d2f9bb44711bd5e613f521bfb6b34..89007b0bc743198e0f322725164041c00180cc36 100644
--- a/drivers/platform/chrome/wilco_ec/Kconfig
+++ b/drivers/platform/chrome/wilco_ec/Kconfig
@@ -1,7 +1,7 @@
# SPDX-License-Identifier: GPL-2.0-only
config WILCO_EC
tristate "ChromeOS Wilco Embedded Controller"
- depends on ACPI && X86 && CROS_EC_LPC && CROS_EC_LPC_MEC
+ depends on ACPI && X86 && CROS_EC_LPC
help
If you say Y here, you get support for talking to the ChromeOS
Wilco EC over an eSPI bus. This uses a simple byte-level protocol
@@ -19,3 +19,19 @@ config WILCO_EC_DEBUGFS
manipulation and allow for testing arbitrary commands. This
interface is intended for debug only and will not be present
on production devices.
+
+config WILCO_EC_EVENTS
+ tristate "Enable event forwarding from EC to userspace"
+ depends on WILCO_EC
+ help
+ If you say Y here, you get support for the EC to send events
+ (such as power state changes) to userspace. The EC sends the events
+ over ACPI, and a driver queues up the events to be read by a
+ userspace daemon from /dev/wilco_event using read() and poll().
+
+config WILCO_EC_TELEMETRY
+ tristate "Enable querying telemetry data from EC"
+ depends on WILCO_EC
+ help
+ If you say Y here, you get support to query EC telemetry data from
+ /dev/wilco_telem0 using write() and then read().
diff --git a/drivers/platform/chrome/wilco_ec/Makefile b/drivers/platform/chrome/wilco_ec/Makefile
index 063e7fb4ea17df0ea35574e919e56f6040915831..bc817164596ed73f3ed0c4c8800214872061fea3 100644
--- a/drivers/platform/chrome/wilco_ec/Makefile
+++ b/drivers/platform/chrome/wilco_ec/Makefile
@@ -1,6 +1,10 @@
# SPDX-License-Identifier: GPL-2.0
-wilco_ec-objs := core.o mailbox.o
+wilco_ec-objs := core.o mailbox.o properties.o sysfs.o
obj-$(CONFIG_WILCO_EC) += wilco_ec.o
wilco_ec_debugfs-objs := debugfs.o
obj-$(CONFIG_WILCO_EC_DEBUGFS) += wilco_ec_debugfs.o
+wilco_ec_events-objs := event.o
+obj-$(CONFIG_WILCO_EC_EVENTS) += wilco_ec_events.o
+wilco_ec_telem-objs := telemetry.o
+obj-$(CONFIG_WILCO_EC_TELEMETRY) += wilco_ec_telem.o
diff --git a/drivers/platform/chrome/wilco_ec/core.c b/drivers/platform/chrome/wilco_ec/core.c
index 05e1e2be1c910e0d560b653c1d772a2bb639c279..3724bf4b77c61302556075542571ed9a5e67df70 100644
--- a/drivers/platform/chrome/wilco_ec/core.c
+++ b/drivers/platform/chrome/wilco_ec/core.c
@@ -52,9 +52,7 @@ static int wilco_ec_probe(struct platform_device *pdev)
ec->dev = dev;
mutex_init(&ec->mailbox_lock);
- /* Largest data buffer size requirement is extended data response */
- ec->data_size = sizeof(struct wilco_ec_response) +
- EC_MAILBOX_DATA_SIZE_EXTENDED;
+ ec->data_size = sizeof(struct wilco_ec_response) + EC_MAILBOX_DATA_SIZE;
ec->data_buffer = devm_kzalloc(dev, ec->data_size, GFP_KERNEL);
if (!ec->data_buffer)
return -ENOMEM;
@@ -89,8 +87,28 @@ static int wilco_ec_probe(struct platform_device *pdev)
goto unregister_debugfs;
}
+ ret = wilco_ec_add_sysfs(ec);
+ if (ret < 0) {
+ dev_err(dev, "Failed to create sysfs entries: %d", ret);
+ goto unregister_rtc;
+ }
+
+ /* Register child device that will be found by the telemetry driver. */
+ ec->telem_pdev = platform_device_register_data(dev, "wilco_telem",
+ PLATFORM_DEVID_AUTO,
+ ec, sizeof(*ec));
+ if (IS_ERR(ec->telem_pdev)) {
+ dev_err(dev, "Failed to create telemetry platform device\n");
+ ret = PTR_ERR(ec->telem_pdev);
+ goto remove_sysfs;
+ }
+
return 0;
+remove_sysfs:
+ wilco_ec_remove_sysfs(ec);
+unregister_rtc:
+ platform_device_unregister(ec->rtc_pdev);
unregister_debugfs:
if (ec->debugfs_pdev)
platform_device_unregister(ec->debugfs_pdev);
@@ -102,6 +120,8 @@ static int wilco_ec_remove(struct platform_device *pdev)
{
struct wilco_ec_device *ec = platform_get_drvdata(pdev);
+ wilco_ec_remove_sysfs(ec);
+ platform_device_unregister(ec->telem_pdev);
platform_device_unregister(ec->rtc_pdev);
if (ec->debugfs_pdev)
platform_device_unregister(ec->debugfs_pdev);
diff --git a/drivers/platform/chrome/wilco_ec/debugfs.c b/drivers/platform/chrome/wilco_ec/debugfs.c
index f163476d080d25978bce23feeb848a6e98ebeff2..8d65a1e2f1a35929388d027be8f3ec860928d980 100644
--- a/drivers/platform/chrome/wilco_ec/debugfs.c
+++ b/drivers/platform/chrome/wilco_ec/debugfs.c
@@ -16,14 +16,14 @@
#define DRV_NAME "wilco-ec-debugfs"
-/* The 256 raw bytes will take up more space when represented as a hex string */
-#define FORMATTED_BUFFER_SIZE (EC_MAILBOX_DATA_SIZE_EXTENDED * 4)
+/* The raw bytes will take up more space when represented as a hex string */
+#define FORMATTED_BUFFER_SIZE (EC_MAILBOX_DATA_SIZE * 4)
struct wilco_ec_debugfs {
struct wilco_ec_device *ec;
struct dentry *dir;
size_t response_size;
- u8 raw_data[EC_MAILBOX_DATA_SIZE_EXTENDED];
+ u8 raw_data[EC_MAILBOX_DATA_SIZE];
u8 formatted_data[FORMATTED_BUFFER_SIZE];
};
static struct wilco_ec_debugfs *debug_info;
@@ -124,12 +124,6 @@ static ssize_t raw_write(struct file *file, const char __user *user_buf,
msg.response_data = debug_info->raw_data;
msg.response_size = EC_MAILBOX_DATA_SIZE;
- /* Telemetry commands use extended response data */
- if (msg.type == WILCO_EC_MSG_TELEMETRY_LONG) {
- msg.flags |= WILCO_EC_FLAG_EXTENDED_DATA;
- msg.response_size = EC_MAILBOX_DATA_SIZE_EXTENDED;
- }
-
ret = wilco_ec_mailbox(debug_info->ec, &msg);
if (ret < 0)
return ret;
diff --git a/drivers/platform/chrome/wilco_ec/event.c b/drivers/platform/chrome/wilco_ec/event.c
new file mode 100644
index 0000000000000000000000000000000000000000..dba3d445623f2ee80f1f262d3c1de731b784696e
--- /dev/null
+++ b/drivers/platform/chrome/wilco_ec/event.c
@@ -0,0 +1,581 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * ACPI event handling for Wilco Embedded Controller
+ *
+ * Copyright 2019 Google LLC
+ *
+ * The Wilco Embedded Controller can create custom events that
+ * are not handled as standard ACPI objects. These events can
+ * contain information about changes in EC controlled features,
+ * such as errors and events in the dock or display. For example,
+ * an event is triggered if the dock is plugged into a display
+ * incorrectly. These events are needed for telemetry and
+ * diagnostics reasons, and for possibly alerting the user.
+
+ * These events are triggered by the EC with an ACPI Notify(0x90),
+ * and then the BIOS reads the event buffer from EC RAM via an
+ * ACPI method. When the OS receives these events via ACPI,
+ * it passes them along to this driver. The events are put into
+ * a queue which can be read by a userspace daemon via a char device
+ * that implements read() and poll(). The event queue acts as a
+ * circular buffer of size 64, so if there are no userspace consumers
+ * the kernel will not run out of memory. The char device will appear at
+ * /dev/wilco_event{n}, where n is some small non-negative integer,
+ * starting from 0. Standard ACPI events such as the battery getting
+ * plugged/unplugged can also come through this path, but they are
+ * dealt with via other paths, and are ignored here.
+
+ * To test, you can tail the binary data with
+ * $ cat /dev/wilco_event0 | hexdump -ve '1/1 "%x\n"'
+ * and then create an event by plugging/unplugging the battery.
+ */
+
+#include <linux/acpi.h>
+#include <linux/cdev.h>
+#include <linux/device.h>
+#include <linux/fs.h>
+#include <linux/idr.h>
+#include <linux/io.h>
+#include <linux/list.h>
+#include <linux/module.h>
+#include <linux/poll.h>
+#include <linux/spinlock.h>
+#include <linux/uaccess.h>
+#include <linux/wait.h>
+
+/* ACPI Notify event code indicating event data is available. */
+#define EC_ACPI_NOTIFY_EVENT 0x90
+/* ACPI Method to execute to retrieve event data buffer from the EC. */
+#define EC_ACPI_GET_EVENT "QSET"
+/* Maximum number of words in event data returned by the EC. */
+#define EC_ACPI_MAX_EVENT_WORDS 6
+#define EC_ACPI_MAX_EVENT_SIZE \
+ (sizeof(struct ec_event) + (EC_ACPI_MAX_EVENT_WORDS) * sizeof(u16))
+
+/* Node will appear in /dev/EVENT_DEV_NAME */
+#define EVENT_DEV_NAME "wilco_event"
+#define EVENT_CLASS_NAME EVENT_DEV_NAME
+#define DRV_NAME EVENT_DEV_NAME
+#define EVENT_DEV_NAME_FMT (EVENT_DEV_NAME "%d")
+static struct class event_class = {
+ .owner = THIS_MODULE,
+ .name = EVENT_CLASS_NAME,
+};
+
+/* Keep track of all the device numbers used. */
+#define EVENT_MAX_DEV 128
+static int event_major;
+static DEFINE_IDA(event_ida);
+
+/* Size of circular queue of events. */
+#define MAX_NUM_EVENTS 64
+
+/**
+ * struct ec_event - Extended event returned by the EC.
+ * @size: Number of 16bit words in structure after the size word.
+ * @type: Extended event type, meaningless for us.
+ * @event: Event data words. Max count is %EC_ACPI_MAX_EVENT_WORDS.
+ */
+struct ec_event {
+ u16 size;
+ u16 type;
+ u16 event[0];
+} __packed;
+
+#define ec_event_num_words(ev) (ev->size - 1)
+#define ec_event_size(ev) (sizeof(*ev) + (ec_event_num_words(ev) * sizeof(u16)))
+
+/**
+ * struct ec_event_queue - Circular queue for events.
+ * @capacity: Number of elements the queue can hold.
+ * @head: Next index to write to.
+ * @tail: Next index to read from.
+ * @entries: Array of events.
+ */
+struct ec_event_queue {
+ int capacity;
+ int head;
+ int tail;
+ struct ec_event *entries[0];
+};
+
+/* Maximum number of events to store in ec_event_queue */
+static int queue_size = 64;
+module_param(queue_size, int, 0644);
+
+static struct ec_event_queue *event_queue_new(int capacity)
+{
+ struct ec_event_queue *q;
+
+ q = kzalloc(struct_size(q, entries, capacity), GFP_KERNEL);
+ if (!q)
+ return NULL;
+
+ q->capacity = capacity;
+
+ return q;
+}
+
+static inline bool event_queue_empty(struct ec_event_queue *q)
+{
+ /* head==tail when both full and empty, but head==NULL when empty */
+ return q->head == q->tail && !q->entries[q->head];
+}
+
+static inline bool event_queue_full(struct ec_event_queue *q)
+{
+ /* head==tail when both full and empty, but head!=NULL when full */
+ return q->head == q->tail && q->entries[q->head];
+}
+
+static struct ec_event *event_queue_pop(struct ec_event_queue *q)
+{
+ struct ec_event *ev;
+
+ if (event_queue_empty(q))
+ return NULL;
+
+ ev = q->entries[q->tail];
+ q->entries[q->tail] = NULL;
+ q->tail = (q->tail + 1) % q->capacity;
+
+ return ev;
+}
+
+/*
+ * If full, overwrite the oldest event and return it so the caller
+ * can kfree it. If not full, return NULL.
+ */
+static struct ec_event *event_queue_push(struct ec_event_queue *q,
+ struct ec_event *ev)
+{
+ struct ec_event *popped = NULL;
+
+ if (event_queue_full(q))
+ popped = event_queue_pop(q);
+ q->entries[q->head] = ev;
+ q->head = (q->head + 1) % q->capacity;
+
+ return popped;
+}
+
+static void event_queue_free(struct ec_event_queue *q)
+{
+ struct ec_event *event;
+
+ while ((event = event_queue_pop(q)) != NULL)
+ kfree(event);
+
+ kfree(q);
+}
+
+/**
+ * struct event_device_data - Data for a Wilco EC device that responds to ACPI.
+ * @events: Circular queue of EC events to be provided to userspace.
+ * @queue_lock: Protect the queue from simultaneous read/writes.
+ * @wq: Wait queue to notify processes when events are available or the
+ * device has been removed.
+ * @cdev: Char dev that userspace reads() and polls() from.
+ * @dev: Device associated with the %cdev.
+ * @exist: Has the device been not been removed? Once a device has been removed,
+ * writes, reads, and new opens will fail.
+ * @available: Guarantee only one client can open() file and read from queue.
+ *
+ * There will be one of these structs for each ACPI device registered. This data
+ * is the queue of events received from ACPI that still need to be read from
+ * userspace, the device and char device that userspace is using, a wait queue
+ * used to notify different threads when something has changed, plus a flag
+ * on whether the ACPI device has been removed.
+ */
+struct event_device_data {
+ struct ec_event_queue *events;
+ spinlock_t queue_lock;
+ wait_queue_head_t wq;
+ struct device dev;
+ struct cdev cdev;
+ bool exist;
+ atomic_t available;
+};
+
+/**
+ * enqueue_events() - Place EC events in queue to be read by userspace.
+ * @adev: Device the events came from.
+ * @buf: Buffer of event data.
+ * @length: Length of event data buffer.
+ *
+ * %buf contains a number of ec_event's, packed one after the other.
+ * Each ec_event is of variable length. Start with the first event, copy it
+ * into a persistent ec_event, store that entry in the queue, move on
+ * to the next ec_event in buf, and repeat.
+ *
+ * Return: 0 on success or negative error code on failure.
+ */
+static int enqueue_events(struct acpi_device *adev, const u8 *buf, u32 length)
+{
+ struct event_device_data *dev_data = adev->driver_data;
+ struct ec_event *event, *queue_event, *old_event;
+ size_t num_words, event_size;
+ u32 offset = 0;
+
+ while (offset < length) {
+ event = (struct ec_event *)(buf + offset);
+
+ num_words = ec_event_num_words(event);
+ event_size = ec_event_size(event);
+ if (num_words > EC_ACPI_MAX_EVENT_WORDS) {
+ dev_err(&adev->dev, "Too many event words: %zu > %d\n",
+ num_words, EC_ACPI_MAX_EVENT_WORDS);
+ return -EOVERFLOW;
+ }
+
+ /* Ensure event does not overflow the available buffer */
+ if ((offset + event_size) > length) {
+ dev_err(&adev->dev, "Event exceeds buffer: %zu > %d\n",
+ offset + event_size, length);
+ return -EOVERFLOW;
+ }
+
+ /* Point to the next event in the buffer */
+ offset += event_size;
+
+ /* Copy event into the queue */
+ queue_event = kmemdup(event, event_size, GFP_KERNEL);
+ if (!queue_event)
+ return -ENOMEM;
+ spin_lock(&dev_data->queue_lock);
+ old_event = event_queue_push(dev_data->events, queue_event);
+ spin_unlock(&dev_data->queue_lock);
+ kfree(old_event);
+ wake_up_interruptible(&dev_data->wq);
+ }
+
+ return 0;
+}
+
+/**
+ * event_device_notify() - Callback when EC generates an event over ACPI.
+ * @adev: The device that the event is coming from.
+ * @value: Value passed to Notify() in ACPI.
+ *
+ * This function will read the events from the device and enqueue them.
+ */
+static void event_device_notify(struct acpi_device *adev, u32 value)
+{
+ struct acpi_buffer event_buffer = { ACPI_ALLOCATE_BUFFER, NULL };
+ union acpi_object *obj;
+ acpi_status status;
+
+ if (value != EC_ACPI_NOTIFY_EVENT) {
+ dev_err(&adev->dev, "Invalid event: 0x%08x\n", value);
+ return;
+ }
+
+ /* Execute ACPI method to get event data buffer. */
+ status = acpi_evaluate_object(adev->handle, EC_ACPI_GET_EVENT,
+ NULL, &event_buffer);
+ if (ACPI_FAILURE(status)) {
+ dev_err(&adev->dev, "Error executing ACPI method %s()\n",
+ EC_ACPI_GET_EVENT);
+ return;
+ }
+
+ obj = (union acpi_object *)event_buffer.pointer;
+ if (!obj) {
+ dev_err(&adev->dev, "Nothing returned from %s()\n",
+ EC_ACPI_GET_EVENT);
+ return;
+ }
+ if (obj->type != ACPI_TYPE_BUFFER) {
+ dev_err(&adev->dev, "Invalid object returned from %s()\n",
+ EC_ACPI_GET_EVENT);
+ kfree(obj);
+ return;
+ }
+ if (obj->buffer.length < sizeof(struct ec_event)) {
+ dev_err(&adev->dev, "Invalid buffer length %d from %s()\n",
+ obj->buffer.length, EC_ACPI_GET_EVENT);
+ kfree(obj);
+ return;
+ }
+
+ enqueue_events(adev, obj->buffer.pointer, obj->buffer.length);
+ kfree(obj);
+}
+
+static int event_open(struct inode *inode, struct file *filp)
+{
+ struct event_device_data *dev_data;
+
+ dev_data = container_of(inode->i_cdev, struct event_device_data, cdev);
+ if (!dev_data->exist)
+ return -ENODEV;
+
+ if (atomic_cmpxchg(&dev_data->available, 1, 0) == 0)
+ return -EBUSY;
+
+ /* Increase refcount on device so dev_data is not freed */
+ get_device(&dev_data->dev);
+ stream_open(inode, filp);
+ filp->private_data = dev_data;
+
+ return 0;
+}
+
+static __poll_t event_poll(struct file *filp, poll_table *wait)
+{
+ struct event_device_data *dev_data = filp->private_data;
+ __poll_t mask = 0;
+
+ poll_wait(filp, &dev_data->wq, wait);
+ if (!dev_data->exist)
+ return EPOLLHUP;
+ if (!event_queue_empty(dev_data->events))
+ mask |= EPOLLIN | EPOLLRDNORM | EPOLLPRI;
+ return mask;
+}
+
+/**
+ * event_read() - Callback for passing event data to userspace via read().
+ * @filp: The file we are reading from.
+ * @buf: Pointer to userspace buffer to fill with one event.
+ * @count: Number of bytes requested. Must be at least EC_ACPI_MAX_EVENT_SIZE.
+ * @pos: File position pointer, irrelevant since we don't support seeking.
+ *
+ * Removes the first event from the queue, places it in the passed buffer.
+ *
+ * If there are no events in the the queue, then one of two things happens,
+ * depending on if the file was opened in nonblocking mode: If in nonblocking
+ * mode, then return -EAGAIN to say there's no data. If in blocking mode, then
+ * block until an event is available.
+ *
+ * Return: Number of bytes placed in buffer, negative error code on failure.
+ */
+static ssize_t event_read(struct file *filp, char __user *buf, size_t count,
+ loff_t *pos)
+{
+ struct event_device_data *dev_data = filp->private_data;
+ struct ec_event *event;
+ ssize_t n_bytes_written = 0;
+ int err;
+
+ /* We only will give them the entire event at once */
+ if (count != 0 && count < EC_ACPI_MAX_EVENT_SIZE)
+ return -EINVAL;
+
+ spin_lock(&dev_data->queue_lock);
+ while (event_queue_empty(dev_data->events)) {
+ spin_unlock(&dev_data->queue_lock);
+ if (filp->f_flags & O_NONBLOCK)
+ return -EAGAIN;
+
+ err = wait_event_interruptible(dev_data->wq,
+ !event_queue_empty(dev_data->events) ||
+ !dev_data->exist);
+ if (err)
+ return err;
+
+ /* Device was removed as we waited? */
+ if (!dev_data->exist)
+ return -ENODEV;
+ spin_lock(&dev_data->queue_lock);
+ }
+ event = event_queue_pop(dev_data->events);
+ spin_unlock(&dev_data->queue_lock);
+ n_bytes_written = ec_event_size(event);
+ if (copy_to_user(buf, event, n_bytes_written))
+ n_bytes_written = -EFAULT;
+ kfree(event);
+
+ return n_bytes_written;
+}
+
+static int event_release(struct inode *inode, struct file *filp)
+{
+ struct event_device_data *dev_data = filp->private_data;
+
+ atomic_set(&dev_data->available, 1);
+ put_device(&dev_data->dev);
+
+ return 0;
+}
+
+static const struct file_operations event_fops = {
+ .open = event_open,
+ .poll = event_poll,
+ .read = event_read,
+ .release = event_release,
+ .llseek = no_llseek,
+ .owner = THIS_MODULE,
+};
+
+/**
+ * free_device_data() - Callback to free the event_device_data structure.
+ * @d: The device embedded in our device data, which we have been ref counting.
+ *
+ * This is called only after event_device_remove() has been called and all
+ * userspace programs have called event_release() on all the open file
+ * descriptors.
+ */
+static void free_device_data(struct device *d)
+{
+ struct event_device_data *dev_data;
+
+ dev_data = container_of(d, struct event_device_data, dev);
+ event_queue_free(dev_data->events);
+ kfree(dev_data);
+}
+
+static void hangup_device(struct event_device_data *dev_data)
+{
+ dev_data->exist = false;
+ /* Wake up the waiting processes so they can close. */
+ wake_up_interruptible(&dev_data->wq);
+ put_device(&dev_data->dev);
+}
+
+/**
+ * event_device_add() - Callback when creating a new device.
+ * @adev: ACPI device that we will be receiving events from.
+ *
+ * This finds a free minor number for the device, allocates and initializes
+ * some device data, and creates a new device and char dev node.
+ *
+ * The device data is freed in free_device_data(), which is called when
+ * %dev_data->dev is release()ed. This happens after all references to
+ * %dev_data->dev are dropped, which happens once both event_device_remove()
+ * has been called and every open()ed file descriptor has been release()ed.
+ *
+ * Return: 0 on success, negative error code on failure.
+ */
+static int event_device_add(struct acpi_device *adev)
+{
+ struct event_device_data *dev_data;
+ int error, minor;
+
+ minor = ida_alloc_max(&event_ida, EVENT_MAX_DEV-1, GFP_KERNEL);
+ if (minor < 0) {
+ error = minor;
+ dev_err(&adev->dev, "Failed to find minor number: %d\n", error);
+ return error;
+ }
+
+ dev_data = kzalloc(sizeof(*dev_data), GFP_KERNEL);
+ if (!dev_data) {
+ error = -ENOMEM;
+ goto free_minor;
+ }
+
+ /* Initialize the device data. */
+ adev->driver_data = dev_data;
+ dev_data->events = event_queue_new(queue_size);
+ if (!dev_data->events) {
+ kfree(dev_data);
+ error = -ENOMEM;
+ goto free_minor;
+ }
+ spin_lock_init(&dev_data->queue_lock);
+ init_waitqueue_head(&dev_data->wq);
+ dev_data->exist = true;
+ atomic_set(&dev_data->available, 1);
+
+ /* Initialize the device. */
+ dev_data->dev.devt = MKDEV(event_major, minor);
+ dev_data->dev.class = &event_class;
+ dev_data->dev.release = free_device_data;
+ dev_set_name(&dev_data->dev, EVENT_DEV_NAME_FMT, minor);
+ device_initialize(&dev_data->dev);
+
+ /* Initialize the character device, and add it to userspace. */
+ cdev_init(&dev_data->cdev, &event_fops);
+ error = cdev_device_add(&dev_data->cdev, &dev_data->dev);
+ if (error)
+ goto free_dev_data;
+
+ return 0;
+
+free_dev_data:
+ hangup_device(dev_data);
+free_minor:
+ ida_simple_remove(&event_ida, minor);
+ return error;
+}
+
+static int event_device_remove(struct acpi_device *adev)
+{
+ struct event_device_data *dev_data = adev->driver_data;
+
+ cdev_device_del(&dev_data->cdev, &dev_data->dev);
+ ida_simple_remove(&event_ida, MINOR(dev_data->dev.devt));
+ hangup_device(dev_data);
+
+ return 0;
+}
+
+static const struct acpi_device_id event_acpi_ids[] = {
+ { "GOOG000D", 0 },
+ { }
+};
+MODULE_DEVICE_TABLE(acpi, event_acpi_ids);
+
+static struct acpi_driver event_driver = {
+ .name = DRV_NAME,
+ .class = DRV_NAME,
+ .ids = event_acpi_ids,
+ .ops = {
+ .add = event_device_add,
+ .notify = event_device_notify,
+ .remove = event_device_remove,
+ },
+ .owner = THIS_MODULE,
+};
+
+static int __init event_module_init(void)
+{
+ dev_t dev_num = 0;
+ int ret;
+
+ ret = class_register(&event_class);
+ if (ret) {
+ pr_err(DRV_NAME ": Failed registering class: %d\n", ret);
+ return ret;
+ }
+
+ /* Request device numbers, starting with minor=0. Save the major num. */
+ ret = alloc_chrdev_region(&dev_num, 0, EVENT_MAX_DEV, EVENT_DEV_NAME);
+ if (ret) {
+ pr_err(DRV_NAME ": Failed allocating dev numbers: %d\n", ret);
+ goto destroy_class;
+ }
+ event_major = MAJOR(dev_num);
+
+ ret = acpi_bus_register_driver(&event_driver);
+ if (ret < 0) {
+ pr_err(DRV_NAME ": Failed registering driver: %d\n", ret);
+ goto unregister_region;
+ }
+
+ return 0;
+
+unregister_region:
+ unregister_chrdev_region(MKDEV(event_major, 0), EVENT_MAX_DEV);
+destroy_class:
+ class_unregister(&event_class);
+ ida_destroy(&event_ida);
+ return ret;
+}
+
+static void __exit event_module_exit(void)
+{
+ acpi_bus_unregister_driver(&event_driver);
+ unregister_chrdev_region(MKDEV(event_major, 0), EVENT_MAX_DEV);
+ class_unregister(&event_class);
+ ida_destroy(&event_ida);
+}
+
+module_init(event_module_init);
+module_exit(event_module_exit);
+
+MODULE_AUTHOR("Nick Crews <ncrews@chromium.org>");
+MODULE_DESCRIPTION("Wilco EC ACPI event driver");
+MODULE_LICENSE("GPL");
+MODULE_ALIAS("platform:" DRV_NAME);
diff --git a/drivers/platform/chrome/wilco_ec/mailbox.c b/drivers/platform/chrome/wilco_ec/mailbox.c
index 7fb58b48796371cf59d497ef66cf7b094353c52b..ced1f9f3dceed27ab49e044abe113fb3e1c1ad4e 100644
--- a/drivers/platform/chrome/wilco_ec/mailbox.c
+++ b/drivers/platform/chrome/wilco_ec/mailbox.c
@@ -119,7 +119,6 @@ static int wilco_ec_transfer(struct wilco_ec_device *ec,
struct wilco_ec_response *rs;
u8 checksum;
u8 flag;
- size_t size;
/* Write request header, then data */
cros_ec_lpc_io_bytes_mec(MEC_IO_WRITE, 0, sizeof(*rq), (u8 *)rq);
@@ -148,21 +147,11 @@ static int wilco_ec_transfer(struct wilco_ec_device *ec,
return -EIO;
}
- /*
- * The EC always returns either EC_MAILBOX_DATA_SIZE or
- * EC_MAILBOX_DATA_SIZE_EXTENDED bytes of data, so we need to
- * calculate the checksum on **all** of this data, even if we
- * won't use all of it.
- */
- if (msg->flags & WILCO_EC_FLAG_EXTENDED_DATA)
- size = EC_MAILBOX_DATA_SIZE_EXTENDED;
- else
- size = EC_MAILBOX_DATA_SIZE;
-
/* Read back response */
rs = ec->data_buffer;
checksum = cros_ec_lpc_io_bytes_mec(MEC_IO_READ, 0,
- sizeof(*rs) + size, (u8 *)rs);
+ sizeof(*rs) + EC_MAILBOX_DATA_SIZE,
+ (u8 *)rs);
if (checksum) {
dev_dbg(ec->dev, "bad packet checksum 0x%02x\n", rs->checksum);
return -EBADMSG;
@@ -173,9 +162,9 @@ static int wilco_ec_transfer(struct wilco_ec_device *ec,
return -EBADMSG;
}
- if (rs->data_size != size) {
- dev_dbg(ec->dev, "unexpected packet size (%u != %zu)",
- rs->data_size, size);
+ if (rs->data_size != EC_MAILBOX_DATA_SIZE) {
+ dev_dbg(ec->dev, "unexpected packet size (%u != %u)",
+ rs->data_size, EC_MAILBOX_DATA_SIZE);
return -EMSGSIZE;
}
diff --git a/drivers/platform/chrome/wilco_ec/properties.c b/drivers/platform/chrome/wilco_ec/properties.c
new file mode 100644
index 0000000000000000000000000000000000000000..e69682c95ea2d7f3a0d678b3c7bd3384aa905a7b
--- /dev/null
+++ b/drivers/platform/chrome/wilco_ec/properties.c
@@ -0,0 +1,132 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * Copyright 2019 Google LLC
+ */
+
+#include <linux/platform_data/wilco-ec.h>
+#include <linux/string.h>
+#include <linux/unaligned/le_memmove.h>
+
+/* Operation code; what the EC should do with the property */
+enum ec_property_op {
+ EC_OP_GET = 0,
+ EC_OP_SET = 1,
+};
+
+struct ec_property_request {
+ u8 op; /* One of enum ec_property_op */
+ u8 property_id[4]; /* The 32 bit PID is stored Little Endian */
+ u8 length;
+ u8 data[WILCO_EC_PROPERTY_MAX_SIZE];
+} __packed;
+
+struct ec_property_response {
+ u8 reserved[2];
+ u8 op; /* One of enum ec_property_op */
+ u8 property_id[4]; /* The 32 bit PID is stored Little Endian */
+ u8 length;
+ u8 data[WILCO_EC_PROPERTY_MAX_SIZE];
+} __packed;
+
+static int send_property_msg(struct wilco_ec_device *ec,
+ struct ec_property_request *rq,
+ struct ec_property_response *rs)
+{
+ struct wilco_ec_message ec_msg;
+ int ret;
+
+ memset(&ec_msg, 0, sizeof(ec_msg));
+ ec_msg.type = WILCO_EC_MSG_PROPERTY;
+ ec_msg.request_data = rq;
+ ec_msg.request_size = sizeof(*rq);
+ ec_msg.response_data = rs;
+ ec_msg.response_size = sizeof(*rs);
+
+ ret = wilco_ec_mailbox(ec, &ec_msg);
+ if (ret < 0)
+ return ret;
+ if (rs->op != rq->op)
+ return -EBADMSG;
+ if (memcmp(rq->property_id, rs->property_id, sizeof(rs->property_id)))
+ return -EBADMSG;
+
+ return 0;
+}
+
+int wilco_ec_get_property(struct wilco_ec_device *ec,
+ struct wilco_ec_property_msg *prop_msg)
+{
+ struct ec_property_request rq;
+ struct ec_property_response rs;
+ int ret;
+
+ memset(&rq, 0, sizeof(rq));
+ rq.op = EC_OP_GET;
+ put_unaligned_le32(prop_msg->property_id, rq.property_id);
+
+ ret = send_property_msg(ec, &rq, &rs);
+ if (ret < 0)
+ return ret;
+
+ prop_msg->length = rs.length;
+ memcpy(prop_msg->data, rs.data, rs.length);
+
+ return 0;
+}
+EXPORT_SYMBOL_GPL(wilco_ec_get_property);
+
+int wilco_ec_set_property(struct wilco_ec_device *ec,
+ struct wilco_ec_property_msg *prop_msg)
+{
+ struct ec_property_request rq;
+ struct ec_property_response rs;
+ int ret;
+
+ memset(&rq, 0, sizeof(rq));
+ rq.op = EC_OP_SET;
+ put_unaligned_le32(prop_msg->property_id, rq.property_id);
+ rq.length = prop_msg->length;
+ memcpy(rq.data, prop_msg->data, prop_msg->length);
+
+ ret = send_property_msg(ec, &rq, &rs);
+ if (ret < 0)
+ return ret;
+ if (rs.length != prop_msg->length)
+ return -EBADMSG;
+
+ return 0;
+}
+EXPORT_SYMBOL_GPL(wilco_ec_set_property);
+
+int wilco_ec_get_byte_property(struct wilco_ec_device *ec, u32 property_id,
+ u8 *val)
+{
+ struct wilco_ec_property_msg msg;
+ int ret;
+
+ msg.property_id = property_id;
+
+ ret = wilco_ec_get_property(ec, &msg);
+ if (ret < 0)
+ return ret;
+ if (msg.length != 1)
+ return -EBADMSG;
+
+ *val = msg.data[0];
+
+ return 0;
+}
+EXPORT_SYMBOL_GPL(wilco_ec_get_byte_property);
+
+int wilco_ec_set_byte_property(struct wilco_ec_device *ec, u32 property_id,
+ u8 val)
+{
+ struct wilco_ec_property_msg msg;
+
+ msg.property_id = property_id;
+ msg.data[0] = val;
+ msg.length = 1;
+
+ return wilco_ec_set_property(ec, &msg);
+}
+EXPORT_SYMBOL_GPL(wilco_ec_set_byte_property);
diff --git a/drivers/platform/chrome/wilco_ec/sysfs.c b/drivers/platform/chrome/wilco_ec/sysfs.c
new file mode 100644
index 0000000000000000000000000000000000000000..3b86a21005d3e1469ed847b8823ff4882c09337b
--- /dev/null
+++ b/drivers/platform/chrome/wilco_ec/sysfs.c
@@ -0,0 +1,156 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * Copyright 2019 Google LLC
+ *
+ * Sysfs properties to view and modify EC-controlled features on Wilco devices.
+ * The entries will appear under /sys/bus/platform/devices/GOOG000C:00/
+ *
+ * See Documentation/ABI/testing/sysfs-platform-wilco-ec for more information.
+ */
+
+#include <linux/platform_data/wilco-ec.h>
+#include <linux/sysfs.h>
+
+#define CMD_KB_CMOS 0x7C
+#define SUB_CMD_KB_CMOS_AUTO_ON 0x03
+
+struct boot_on_ac_request {
+ u8 cmd; /* Always CMD_KB_CMOS */
+ u8 reserved1;
+ u8 sub_cmd; /* Always SUB_CMD_KB_CMOS_AUTO_ON */
+ u8 reserved3to5[3];
+ u8 val; /* Either 0 or 1 */
+ u8 reserved7;
+} __packed;
+
+#define CMD_EC_INFO 0x38
+enum get_ec_info_op {
+ CMD_GET_EC_LABEL = 0,
+ CMD_GET_EC_REV = 1,
+ CMD_GET_EC_MODEL = 2,
+ CMD_GET_EC_BUILD_DATE = 3,
+};
+
+struct get_ec_info_req {
+ u8 cmd; /* Always CMD_EC_INFO */
+ u8 reserved;
+ u8 op; /* One of enum get_ec_info_op */
+} __packed;
+
+struct get_ec_info_resp {
+ u8 reserved[2];
+ char value[9]; /* __nonstring: might not be null terminated */
+} __packed;
+
+static ssize_t boot_on_ac_store(struct device *dev,
+ struct device_attribute *attr,
+ const char *buf, size_t count)
+{
+ struct wilco_ec_device *ec = dev_get_drvdata(dev);
+ struct boot_on_ac_request rq;
+ struct wilco_ec_message msg;
+ int ret;
+ u8 val;
+
+ ret = kstrtou8(buf, 10, &val);
+ if (ret < 0)
+ return ret;
+ if (val > 1)
+ return -EINVAL;
+
+ memset(&rq, 0, sizeof(rq));
+ rq.cmd = CMD_KB_CMOS;
+ rq.sub_cmd = SUB_CMD_KB_CMOS_AUTO_ON;
+ rq.val = val;
+
+ memset(&msg, 0, sizeof(msg));
+ msg.type = WILCO_EC_MSG_LEGACY;
+ msg.request_data = &rq;
+ msg.request_size = sizeof(rq);
+ ret = wilco_ec_mailbox(ec, &msg);
+ if (ret < 0)
+ return ret;
+
+ return count;
+}
+
+static DEVICE_ATTR_WO(boot_on_ac);
+
+static ssize_t get_info(struct device *dev, char *buf, enum get_ec_info_op op)
+{
+ struct wilco_ec_device *ec = dev_get_drvdata(dev);
+ struct get_ec_info_req req = { .cmd = CMD_EC_INFO, .op = op };
+ struct get_ec_info_resp resp;
+ int ret;
+
+ struct wilco_ec_message msg = {
+ .type = WILCO_EC_MSG_LEGACY,
+ .request_data = &req,
+ .request_size = sizeof(req),
+ .response_data = &resp,
+ .response_size = sizeof(resp),
+ };
+
+ ret = wilco_ec_mailbox(ec, &msg);
+ if (ret < 0)
+ return ret;
+
+ return scnprintf(buf, PAGE_SIZE, "%.*s\n", (int)sizeof(resp.value),
+ (char *)&resp.value);
+}
+
+static ssize_t version_show(struct device *dev, struct device_attribute *attr,
+ char *buf)
+{
+ return get_info(dev, buf, CMD_GET_EC_LABEL);
+}
+
+static DEVICE_ATTR_RO(version);
+
+static ssize_t build_revision_show(struct device *dev,
+ struct device_attribute *attr, char *buf)
+{
+ return get_info(dev, buf, CMD_GET_EC_REV);
+}
+
+static DEVICE_ATTR_RO(build_revision);
+
+static ssize_t build_date_show(struct device *dev,
+ struct device_attribute *attr, char *buf)
+{
+ return get_info(dev, buf, CMD_GET_EC_BUILD_DATE);
+}
+
+static DEVICE_ATTR_RO(build_date);
+
+static ssize_t model_number_show(struct device *dev,
+ struct device_attribute *attr, char *buf)
+{
+ return get_info(dev, buf, CMD_GET_EC_MODEL);
+}
+
+static DEVICE_ATTR_RO(model_number);
+
+
+static struct attribute *wilco_dev_attrs[] = {
+ &dev_attr_boot_on_ac.attr,
+ &dev_attr_build_date.attr,
+ &dev_attr_build_revision.attr,
+ &dev_attr_model_number.attr,
+ &dev_attr_version.attr,
+ NULL,
+};
+
+static struct attribute_group wilco_dev_attr_group = {
+ .attrs = wilco_dev_attrs,
+};
+
+int wilco_ec_add_sysfs(struct wilco_ec_device *ec)
+{
+ return sysfs_create_group(&ec->dev->kobj, &wilco_dev_attr_group);
+}
+
+void wilco_ec_remove_sysfs(struct wilco_ec_device *ec)
+{
+ sysfs_remove_group(&ec->dev->kobj, &wilco_dev_attr_group);
+}
diff --git a/drivers/platform/chrome/wilco_ec/telemetry.c b/drivers/platform/chrome/wilco_ec/telemetry.c
new file mode 100644
index 0000000000000000000000000000000000000000..94cdc166c840d1f4eb77b646f957cc76f3444c1a
--- /dev/null
+++ b/drivers/platform/chrome/wilco_ec/telemetry.c
@@ -0,0 +1,450 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * Telemetry communication for Wilco EC
+ *
+ * Copyright 2019 Google LLC
+ *
+ * The Wilco Embedded Controller is able to send telemetry data
+ * which is useful for enterprise applications. A daemon running on
+ * the OS sends a command to the EC via a write() to a char device,
+ * and can read the response with a read(). The write() request is
+ * verified by the driver to ensure that it is performing only one
+ * of the whitelisted commands, and that no extraneous data is
+ * being transmitted to the EC. The response is passed directly
+ * back to the reader with no modification.
+ *
+ * The character device will appear as /dev/wilco_telemN, where N
+ * is some small non-negative integer, starting with 0. Only one
+ * process may have the file descriptor open at a time. The calling
+ * userspace program needs to keep the device file descriptor open
+ * between the calls to write() and read() in order to preserve the
+ * response. Up to 32 bytes will be available for reading.
+ *
+ * For testing purposes, try requesting the EC's firmware build
+ * date, by sending the WILCO_EC_TELEM_GET_VERSION command with
+ * argument index=3. i.e. write [0x38, 0x00, 0x03]
+ * to the device node. An ASCII string of the build date is
+ * returned.
+ */
+
+#include <linux/cdev.h>
+#include <linux/device.h>
+#include <linux/fs.h>
+#include <linux/module.h>
+#include <linux/platform_data/wilco-ec.h>
+#include <linux/platform_device.h>
+#include <linux/slab.h>
+#include <linux/types.h>
+#include <linux/uaccess.h>
+
+#define TELEM_DEV_NAME "wilco_telem"
+#define TELEM_CLASS_NAME TELEM_DEV_NAME
+#define DRV_NAME TELEM_DEV_NAME
+#define TELEM_DEV_NAME_FMT (TELEM_DEV_NAME "%d")
+static struct class telem_class = {
+ .owner = THIS_MODULE,
+ .name = TELEM_CLASS_NAME,
+};
+
+/* Keep track of all the device numbers used. */
+#define TELEM_MAX_DEV 128
+static int telem_major;
+static DEFINE_IDA(telem_ida);
+
+/* EC telemetry command codes */
+#define WILCO_EC_TELEM_GET_LOG 0x99
+#define WILCO_EC_TELEM_GET_VERSION 0x38
+#define WILCO_EC_TELEM_GET_FAN_INFO 0x2E
+#define WILCO_EC_TELEM_GET_DIAG_INFO 0xFA
+#define WILCO_EC_TELEM_GET_TEMP_INFO 0x95
+#define WILCO_EC_TELEM_GET_TEMP_READ 0x2C
+#define WILCO_EC_TELEM_GET_BATT_EXT_INFO 0x07
+
+#define TELEM_ARGS_SIZE_MAX 30
+
+/**
+ * struct wilco_ec_telem_request - Telemetry command and arguments sent to EC.
+ * @command: One of WILCO_EC_TELEM_GET_* command codes.
+ * @reserved: Must be 0.
+ * @args: The first N bytes are one of telem_args_get_* structs, the rest is 0.
+ */
+struct wilco_ec_telem_request {
+ u8 command;
+ u8 reserved;
+ u8 args[TELEM_ARGS_SIZE_MAX];
+} __packed;
+
+/*
+ * The following telem_args_get_* structs are embedded within the |args| field
+ * of wilco_ec_telem_request.
+ */
+
+struct telem_args_get_log {
+ u8 log_type;
+ u8 log_index;
+} __packed;
+
+/*
+ * Get a piece of info about the EC firmware version:
+ * 0 = label
+ * 1 = svn_rev
+ * 2 = model_no
+ * 3 = build_date
+ * 4 = frio_version
+ */
+struct telem_args_get_version {
+ u8 index;
+} __packed;
+
+struct telem_args_get_fan_info {
+ u8 command;
+ u8 fan_number;
+ u8 arg;
+} __packed;
+
+struct telem_args_get_diag_info {
+ u8 type;
+ u8 sub_type;
+} __packed;
+
+struct telem_args_get_temp_info {
+ u8 command;
+ u8 index;
+ u8 field;
+ u8 zone;
+} __packed;
+
+struct telem_args_get_temp_read {
+ u8 sensor_index;
+} __packed;
+
+struct telem_args_get_batt_ext_info {
+ u8 var_args[5];
+} __packed;
+
+/**
+ * check_telem_request() - Ensure that a request from userspace is valid.
+ * @rq: Request buffer copied from userspace.
+ * @size: Number of bytes copied from userspace.
+ *
+ * Return: 0 if valid, -EINVAL if bad command or reserved byte is non-zero,
+ * -EMSGSIZE if the request is too long.
+ *
+ * We do not want to allow userspace to send arbitrary telemetry commands to
+ * the EC. Therefore we check to ensure that
+ * 1. The request follows the format of struct wilco_ec_telem_request.
+ * 2. The supplied command code is one of the whitelisted commands.
+ * 3. The request only contains the necessary data for the header and arguments.
+ */
+static int check_telem_request(struct wilco_ec_telem_request *rq,
+ size_t size)
+{
+ size_t max_size = offsetof(struct wilco_ec_telem_request, args);
+
+ if (rq->reserved)
+ return -EINVAL;
+
+ switch (rq->command) {
+ case WILCO_EC_TELEM_GET_LOG:
+ max_size += sizeof(struct telem_args_get_log);
+ break;
+ case WILCO_EC_TELEM_GET_VERSION:
+ max_size += sizeof(struct telem_args_get_version);
+ break;
+ case WILCO_EC_TELEM_GET_FAN_INFO:
+ max_size += sizeof(struct telem_args_get_fan_info);
+ break;
+ case WILCO_EC_TELEM_GET_DIAG_INFO:
+ max_size += sizeof(struct telem_args_get_diag_info);
+ break;
+ case WILCO_EC_TELEM_GET_TEMP_INFO:
+ max_size += sizeof(struct telem_args_get_temp_info);
+ break;
+ case WILCO_EC_TELEM_GET_TEMP_READ:
+ max_size += sizeof(struct telem_args_get_temp_read);
+ break;
+ case WILCO_EC_TELEM_GET_BATT_EXT_INFO:
+ max_size += sizeof(struct telem_args_get_batt_ext_info);
+ break;
+ default:
+ return -EINVAL;
+ }
+
+ return (size <= max_size) ? 0 : -EMSGSIZE;
+}
+
+/**
+ * struct telem_device_data - Data for a Wilco EC device that queries telemetry.
+ * @cdev: Char dev that userspace reads and polls from.
+ * @dev: Device associated with the %cdev.
+ * @ec: Wilco EC that we will be communicating with using the mailbox interface.
+ * @available: Boolean of if the device can be opened.
+ */
+struct telem_device_data {
+ struct device dev;
+ struct cdev cdev;
+ struct wilco_ec_device *ec;
+ atomic_t available;
+};
+
+#define TELEM_RESPONSE_SIZE EC_MAILBOX_DATA_SIZE
+
+/**
+ * struct telem_session_data - Data that exists between open() and release().
+ * @dev_data: Pointer to get back to the device data and EC.
+ * @request: Command and arguments sent to EC.
+ * @response: Response buffer of data from EC.
+ * @has_msg: Is there data available to read from a previous write?
+ */
+struct telem_session_data {
+ struct telem_device_data *dev_data;
+ struct wilco_ec_telem_request request;
+ u8 response[TELEM_RESPONSE_SIZE];
+ bool has_msg;
+};
+
+/**
+ * telem_open() - Callback for when the device node is opened.
+ * @inode: inode for this char device node.
+ * @filp: file for this char device node.
+ *
+ * We need to ensure that after writing a command to the device,
+ * the same userspace process reads the corresponding result.
+ * Therefore, we increment a refcount on opening the device, so that
+ * only one process can communicate with the EC at a time.
+ *
+ * Return: 0 on success, or negative error code on failure.
+ */
+static int telem_open(struct inode *inode, struct file *filp)
+{
+ struct telem_device_data *dev_data;
+ struct telem_session_data *sess_data;
+
+ /* Ensure device isn't already open */
+ dev_data = container_of(inode->i_cdev, struct telem_device_data, cdev);
+ if (atomic_cmpxchg(&dev_data->available, 1, 0) == 0)
+ return -EBUSY;
+
+ get_device(&dev_data->dev);
+
+ sess_data = kzalloc(sizeof(*sess_data), GFP_KERNEL);
+ if (!sess_data) {
+ atomic_set(&dev_data->available, 1);
+ return -ENOMEM;
+ }
+ sess_data->dev_data = dev_data;
+ sess_data->has_msg = false;
+
+ nonseekable_open(inode, filp);
+ filp->private_data = sess_data;
+
+ return 0;
+}
+
+static ssize_t telem_write(struct file *filp, const char __user *buf,
+ size_t count, loff_t *pos)
+{
+ struct telem_session_data *sess_data = filp->private_data;
+ struct wilco_ec_message msg = {};
+ int ret;
+
+ if (count > sizeof(sess_data->request))
+ return -EMSGSIZE;
+ if (copy_from_user(&sess_data->request, buf, count))
+ return -EFAULT;
+ ret = check_telem_request(&sess_data->request, count);
+ if (ret < 0)
+ return ret;
+
+ memset(sess_data->response, 0, sizeof(sess_data->response));
+ msg.type = WILCO_EC_MSG_TELEMETRY;
+ msg.request_data = &sess_data->request;
+ msg.request_size = sizeof(sess_data->request);
+ msg.response_data = sess_data->response;
+ msg.response_size = sizeof(sess_data->response);
+
+ ret = wilco_ec_mailbox(sess_data->dev_data->ec, &msg);
+ if (ret < 0)
+ return ret;
+ if (ret != sizeof(sess_data->response))
+ return -EMSGSIZE;
+
+ sess_data->has_msg = true;
+
+ return count;
+}
+
+static ssize_t telem_read(struct file *filp, char __user *buf, size_t count,
+ loff_t *pos)
+{
+ struct telem_session_data *sess_data = filp->private_data;
+
+ if (!sess_data->has_msg)
+ return -ENODATA;
+ if (count > sizeof(sess_data->response))
+ return -EINVAL;
+
+ if (copy_to_user(buf, sess_data->response, count))
+ return -EFAULT;
+
+ sess_data->has_msg = false;
+
+ return count;
+}
+
+static int telem_release(struct inode *inode, struct file *filp)
+{
+ struct telem_session_data *sess_data = filp->private_data;
+
+ atomic_set(&sess_data->dev_data->available, 1);
+ put_device(&sess_data->dev_data->dev);
+ kfree(sess_data);
+
+ return 0;
+}
+
+static const struct file_operations telem_fops = {
+ .open = telem_open,
+ .write = telem_write,
+ .read = telem_read,
+ .release = telem_release,
+ .llseek = no_llseek,
+ .owner = THIS_MODULE,
+};
+
+/**
+ * telem_device_free() - Callback to free the telem_device_data structure.
+ * @d: The device embedded in our device data, which we have been ref counting.
+ *
+ * Once all open file descriptors are closed and the device has been removed,
+ * the refcount of the device will fall to 0 and this will be called.
+ */
+static void telem_device_free(struct device *d)
+{
+ struct telem_device_data *dev_data;
+
+ dev_data = container_of(d, struct telem_device_data, dev);
+ kfree(dev_data);
+}
+
+/**
+ * telem_device_probe() - Callback when creating a new device.
+ * @pdev: platform device that we will be receiving telems from.
+ *
+ * This finds a free minor number for the device, allocates and initializes
+ * some device data, and creates a new device and char dev node.
+ *
+ * Return: 0 on success, negative error code on failure.
+ */
+static int telem_device_probe(struct platform_device *pdev)
+{
+ struct telem_device_data *dev_data;
+ int error, minor;
+
+ /* Get the next available device number */
+ minor = ida_alloc_max(&telem_ida, TELEM_MAX_DEV-1, GFP_KERNEL);
+ if (minor < 0) {
+ error = minor;
+ dev_err(&pdev->dev, "Failed to find minor number: %d", error);
+ return error;
+ }
+
+ dev_data = kzalloc(sizeof(*dev_data), GFP_KERNEL);
+ if (!dev_data) {
+ ida_simple_remove(&telem_ida, minor);
+ return -ENOMEM;
+ }
+
+ /* Initialize the device data */
+ dev_data->ec = dev_get_platdata(&pdev->dev);
+ atomic_set(&dev_data->available, 1);
+ platform_set_drvdata(pdev, dev_data);
+
+ /* Initialize the device */
+ dev_data->dev.devt = MKDEV(telem_major, minor);
+ dev_data->dev.class = &telem_class;
+ dev_data->dev.release = telem_device_free;
+ dev_set_name(&dev_data->dev, TELEM_DEV_NAME_FMT, minor);
+ device_initialize(&dev_data->dev);
+
+ /* Initialize the character device and add it to userspace */;
+ cdev_init(&dev_data->cdev, &telem_fops);
+ error = cdev_device_add(&dev_data->cdev, &dev_data->dev);
+ if (error) {
+ put_device(&dev_data->dev);
+ ida_simple_remove(&telem_ida, minor);
+ return error;
+ }
+
+ return 0;
+}
+
+static int telem_device_remove(struct platform_device *pdev)
+{
+ struct telem_device_data *dev_data = platform_get_drvdata(pdev);
+
+ cdev_device_del(&dev_data->cdev, &dev_data->dev);
+ put_device(&dev_data->dev);
+ ida_simple_remove(&telem_ida, MINOR(dev_data->dev.devt));
+
+ return 0;
+}
+
+static struct platform_driver telem_driver = {
+ .probe = telem_device_probe,
+ .remove = telem_device_remove,
+ .driver = {
+ .name = DRV_NAME,
+ },
+};
+
+static int __init telem_module_init(void)
+{
+ dev_t dev_num = 0;
+ int ret;
+
+ ret = class_register(&telem_class);
+ if (ret) {
+ pr_err(DRV_NAME ": Failed registering class: %d", ret);
+ return ret;
+ }
+
+ /* Request the kernel for device numbers, starting with minor=0 */
+ ret = alloc_chrdev_region(&dev_num, 0, TELEM_MAX_DEV, TELEM_DEV_NAME);
+ if (ret) {
+ pr_err(DRV_NAME ": Failed allocating dev numbers: %d", ret);
+ goto destroy_class;
+ }
+ telem_major = MAJOR(dev_num);
+
+ ret = platform_driver_register(&telem_driver);
+ if (ret < 0) {
+ pr_err(DRV_NAME ": Failed registering driver: %d\n", ret);
+ goto unregister_region;
+ }
+
+ return 0;
+
+unregister_region:
+ unregister_chrdev_region(MKDEV(telem_major, 0), TELEM_MAX_DEV);
+destroy_class:
+ class_unregister(&telem_class);
+ ida_destroy(&telem_ida);
+ return ret;
+}
+
+static void __exit telem_module_exit(void)
+{
+ platform_driver_unregister(&telem_driver);
+ unregister_chrdev_region(MKDEV(telem_major, 0), TELEM_MAX_DEV);
+ class_unregister(&telem_class);
+ ida_destroy(&telem_ida);
+}
+
+module_init(telem_module_init);
+module_exit(telem_module_exit);
+
+MODULE_AUTHOR("Nick Crews <ncrews@chromium.org>");
+MODULE_DESCRIPTION("Wilco EC telemetry driver");
+MODULE_LICENSE("GPL");
+MODULE_ALIAS("platform:" DRV_NAME);
diff --git a/include/linux/mfd/cros_ec.h b/include/linux/mfd/cros_ec.h
index 5ddca44be06de774c166d7170c049b5ea5b09dba..45aba26db964376d10ee7a97fe999b2b0698dd0b 100644
--- a/include/linux/mfd/cros_ec.h
+++ b/include/linux/mfd/cros_ec.h
@@ -155,6 +155,7 @@ struct cros_ec_device {
struct ec_response_get_next_event_v1 event_data;
int event_size;
u32 host_event_wake_mask;
+ u32 last_resume_result;
};
/**
diff --git a/include/linux/mfd/cros_ec_commands.h b/include/linux/mfd/cros_ec_commands.h
index 114614e20e4dc634150bb231b8b9540a11a4abd5..7ccb8757b79da2e34c70844558fe23de73776c8a 100644
--- a/include/linux/mfd/cros_ec_commands.h
+++ b/include/linux/mfd/cros_ec_commands.h
@@ -4,17 +4,20 @@
*
* Copyright (C) 2012 Google, Inc
*
- * The ChromeOS EC multi function device is used to mux all the requests
- * to the EC device for its multiple features: keyboard controller,
- * battery charging and regulator control, firmware update.
- *
- * NOTE: This file is copied verbatim from the ChromeOS EC Open Source
- * project in an attempt to make future updates easy to make.
+ * NOTE: This file is auto-generated from ChromeOS EC Open Source code from
+ * https://chromium.googlesource.com/chromiumos/platform/ec/+/master/include/ec_commands.h
*/
+/* Host communication command constants for Chrome EC */
+
#ifndef __CROS_EC_COMMANDS_H
#define __CROS_EC_COMMANDS_H
+
+
+
+#define BUILD_ASSERT(_cond)
+
/*
* Current version of this protocol
*
@@ -25,7 +28,7 @@
#define EC_PROTO_VERSION 0x00000002
/* Command version mask */
-#define EC_VER_MASK(version) (1UL << (version))
+#define EC_VER_MASK(version) BIT(version)
/* I/O addresses for ACPI commands */
#define EC_LPC_ADDR_ACPI_DATA 0x62
@@ -39,25 +42,28 @@
/* Protocol version 2 */
#define EC_LPC_ADDR_HOST_ARGS 0x800 /* And 0x801, 0x802, 0x803 */
#define EC_LPC_ADDR_HOST_PARAM 0x804 /* For version 2 params; size is
- * EC_PROTO2_MAX_PARAM_SIZE */
+ * EC_PROTO2_MAX_PARAM_SIZE
+ */
/* Protocol version 3 */
#define EC_LPC_ADDR_HOST_PACKET 0x800 /* Offset of version 3 packet */
#define EC_LPC_HOST_PACKET_SIZE 0x100 /* Max size of version 3 packet */
-/* The actual block is 0x800-0x8ff, but some BIOSes think it's 0x880-0x8ff
- * and they tell the kernel that so we have to think of it as two parts. */
+/*
+ * The actual block is 0x800-0x8ff, but some BIOSes think it's 0x880-0x8ff
+ * and they tell the kernel that so we have to think of it as two parts.
+ */
#define EC_HOST_CMD_REGION0 0x800
#define EC_HOST_CMD_REGION1 0x880
#define EC_HOST_CMD_REGION_SIZE 0x80
/* EC command register bit functions */
-#define EC_LPC_CMDR_DATA (1 << 0) /* Data ready for host to read */
-#define EC_LPC_CMDR_PENDING (1 << 1) /* Write pending to EC */
-#define EC_LPC_CMDR_BUSY (1 << 2) /* EC is busy processing a command */
-#define EC_LPC_CMDR_CMD (1 << 3) /* Last host write was a command */
-#define EC_LPC_CMDR_ACPI_BRST (1 << 4) /* Burst mode (not used) */
-#define EC_LPC_CMDR_SCI (1 << 5) /* SCI event is pending */
-#define EC_LPC_CMDR_SMI (1 << 6) /* SMI event is pending */
+#define EC_LPC_CMDR_DATA BIT(0) /* Data ready for host to read */
+#define EC_LPC_CMDR_PENDING BIT(1) /* Write pending to EC */
+#define EC_LPC_CMDR_BUSY BIT(2) /* EC is busy processing a command */
+#define EC_LPC_CMDR_CMD BIT(3) /* Last host write was a command */
+#define EC_LPC_CMDR_ACPI_BRST BIT(4) /* Burst mode (not used) */
+#define EC_LPC_CMDR_SCI BIT(5) /* SCI event is pending */
+#define EC_LPC_CMDR_SMI BIT(6) /* SMI event is pending */
#define EC_LPC_ADDR_MEMMAP 0x900
#define EC_MEMMAP_SIZE 255 /* ACPI IO buffer max is 255 bytes */
@@ -77,13 +83,15 @@
/* Unused 0x28 - 0x2f */
#define EC_MEMMAP_SWITCHES 0x30 /* 8 bits */
/* Unused 0x31 - 0x33 */
-#define EC_MEMMAP_HOST_EVENTS 0x34 /* 32 bits */
-/* Reserve 0x38 - 0x3f for additional host event-related stuff */
-/* Battery values are all 32 bits */
+#define EC_MEMMAP_HOST_EVENTS 0x34 /* 64 bits */
+/* Battery values are all 32 bits, unless otherwise noted. */
#define EC_MEMMAP_BATT_VOLT 0x40 /* Battery Present Voltage */
#define EC_MEMMAP_BATT_RATE 0x44 /* Battery Present Rate */
#define EC_MEMMAP_BATT_CAP 0x48 /* Battery Remaining Capacity */
-#define EC_MEMMAP_BATT_FLAG 0x4c /* Battery State, defined below */
+#define EC_MEMMAP_BATT_FLAG 0x4c /* Battery State, see below (8-bit) */
+#define EC_MEMMAP_BATT_COUNT 0x4d /* Battery Count (8-bit) */
+#define EC_MEMMAP_BATT_INDEX 0x4e /* Current Battery Data Index (8-bit) */
+/* Unused 0x4f */
#define EC_MEMMAP_BATT_DCAP 0x50 /* Battery Design Capacity */
#define EC_MEMMAP_BATT_DVLT 0x54 /* Battery Design Voltage */
#define EC_MEMMAP_BATT_LFCC 0x58 /* Battery Last Full Charge Capacity */
@@ -97,15 +105,24 @@
/* Unused 0x84 - 0x8f */
#define EC_MEMMAP_ACC_STATUS 0x90 /* Accelerometer status (8 bits )*/
/* Unused 0x91 */
-#define EC_MEMMAP_ACC_DATA 0x92 /* Accelerometer data 0x92 - 0x9f */
+#define EC_MEMMAP_ACC_DATA 0x92 /* Accelerometers data 0x92 - 0x9f */
+/* 0x92: Lid Angle if available, LID_ANGLE_UNRELIABLE otherwise */
+/* 0x94 - 0x99: 1st Accelerometer */
+/* 0x9a - 0x9f: 2nd Accelerometer */
#define EC_MEMMAP_GYRO_DATA 0xa0 /* Gyroscope data 0xa0 - 0xa5 */
-/* Unused 0xa6 - 0xfe (remember, 0xff is NOT part of the memmap region) */
+/* Unused 0xa6 - 0xdf */
+/*
+ * ACPI is unable to access memory mapped data at or above this offset due to
+ * limitations of the ACPI protocol. Do not place data in the range 0xe0 - 0xfe
+ * which might be needed by ACPI.
+ */
+#define EC_MEMMAP_NO_ACPI 0xe0
/* Define the format of the accelerometer mapped memory status byte. */
#define EC_MEMMAP_ACC_STATUS_SAMPLE_ID_MASK 0x0f
-#define EC_MEMMAP_ACC_STATUS_BUSY_BIT (1 << 4)
-#define EC_MEMMAP_ACC_STATUS_PRESENCE_BIT (1 << 7)
+#define EC_MEMMAP_ACC_STATUS_BUSY_BIT BIT(4)
+#define EC_MEMMAP_ACC_STATUS_PRESENCE_BIT BIT(7)
/* Number of temp sensors at EC_MEMMAP_TEMP_SENSOR */
#define EC_TEMP_SENSOR_ENTRIES 16
@@ -149,6 +166,8 @@
#define EC_BATT_FLAG_DISCHARGING 0x04
#define EC_BATT_FLAG_CHARGING 0x08
#define EC_BATT_FLAG_LEVEL_CRITICAL 0x10
+/* Set if some of the static/dynamic data is invalid (or outdated). */
+#define EC_BATT_FLAG_INVALID_DATA 0x20
/* Switch flags at EC_MEMMAP_SWITCHES */
#define EC_SWITCH_LID_OPEN 0x01
@@ -174,20 +193,242 @@
#define EC_WIRELESS_SWITCH_WWAN 0x04 /* WWAN power */
#define EC_WIRELESS_SWITCH_WLAN_POWER 0x08 /* WLAN power */
+/*****************************************************************************/
+/*
+ * ACPI commands
+ *
+ * These are valid ONLY on the ACPI command/data port.
+ */
+
+/*
+ * ACPI Read Embedded Controller
+ *
+ * This reads from ACPI memory space on the EC (EC_ACPI_MEM_*).
+ *
+ * Use the following sequence:
+ *
+ * - Write EC_CMD_ACPI_READ to EC_LPC_ADDR_ACPI_CMD
+ * - Wait for EC_LPC_CMDR_PENDING bit to clear
+ * - Write address to EC_LPC_ADDR_ACPI_DATA
+ * - Wait for EC_LPC_CMDR_DATA bit to set
+ * - Read value from EC_LPC_ADDR_ACPI_DATA
+ */
+#define EC_CMD_ACPI_READ 0x0080
+
+/*
+ * ACPI Write Embedded Controller
+ *
+ * This reads from ACPI memory space on the EC (EC_ACPI_MEM_*).
+ *
+ * Use the following sequence:
+ *
+ * - Write EC_CMD_ACPI_WRITE to EC_LPC_ADDR_ACPI_CMD
+ * - Wait for EC_LPC_CMDR_PENDING bit to clear
+ * - Write address to EC_LPC_ADDR_ACPI_DATA
+ * - Wait for EC_LPC_CMDR_PENDING bit to clear
+ * - Write value to EC_LPC_ADDR_ACPI_DATA
+ */
+#define EC_CMD_ACPI_WRITE 0x0081
+
+/*
+ * ACPI Burst Enable Embedded Controller
+ *
+ * This enables burst mode on the EC to allow the host to issue several
+ * commands back-to-back. While in this mode, writes to mapped multi-byte
+ * data are locked out to ensure data consistency.
+ */
+#define EC_CMD_ACPI_BURST_ENABLE 0x0082
+
+/*
+ * ACPI Burst Disable Embedded Controller
+ *
+ * This disables burst mode on the EC and stops preventing EC writes to mapped
+ * multi-byte data.
+ */
+#define EC_CMD_ACPI_BURST_DISABLE 0x0083
+
+/*
+ * ACPI Query Embedded Controller
+ *
+ * This clears the lowest-order bit in the currently pending host events, and
+ * sets the result code to the 1-based index of the bit (event 0x00000001 = 1,
+ * event 0x80000000 = 32), or 0 if no event was pending.
+ */
+#define EC_CMD_ACPI_QUERY_EVENT 0x0084
+
+/* Valid addresses in ACPI memory space, for read/write commands */
+
+/* Memory space version; set to EC_ACPI_MEM_VERSION_CURRENT */
+#define EC_ACPI_MEM_VERSION 0x00
+/*
+ * Test location; writing value here updates test compliment byte to (0xff -
+ * value).
+ */
+#define EC_ACPI_MEM_TEST 0x01
+/* Test compliment; writes here are ignored. */
+#define EC_ACPI_MEM_TEST_COMPLIMENT 0x02
+
+/* Keyboard backlight brightness percent (0 - 100) */
+#define EC_ACPI_MEM_KEYBOARD_BACKLIGHT 0x03
+/* DPTF Target Fan Duty (0-100, 0xff for auto/none) */
+#define EC_ACPI_MEM_FAN_DUTY 0x04
+
+/*
+ * DPTF temp thresholds. Any of the EC's temp sensors can have up to two
+ * independent thresholds attached to them. The current value of the ID
+ * register determines which sensor is affected by the THRESHOLD and COMMIT
+ * registers. The THRESHOLD register uses the same EC_TEMP_SENSOR_OFFSET scheme
+ * as the memory-mapped sensors. The COMMIT register applies those settings.
+ *
+ * The spec does not mandate any way to read back the threshold settings
+ * themselves, but when a threshold is crossed the AP needs a way to determine
+ * which sensor(s) are responsible. Each reading of the ID register clears and
+ * returns one sensor ID that has crossed one of its threshold (in either
+ * direction) since the last read. A value of 0xFF means "no new thresholds
+ * have tripped". Setting or enabling the thresholds for a sensor will clear
+ * the unread event count for that sensor.
+ */
+#define EC_ACPI_MEM_TEMP_ID 0x05
+#define EC_ACPI_MEM_TEMP_THRESHOLD 0x06
+#define EC_ACPI_MEM_TEMP_COMMIT 0x07
+/*
+ * Here are the bits for the COMMIT register:
+ * bit 0 selects the threshold index for the chosen sensor (0/1)
+ * bit 1 enables/disables the selected threshold (0 = off, 1 = on)
+ * Each write to the commit register affects one threshold.
+ */
+#define EC_ACPI_MEM_TEMP_COMMIT_SELECT_MASK BIT(0)
+#define EC_ACPI_MEM_TEMP_COMMIT_ENABLE_MASK BIT(1)
+/*
+ * Example:
+ *
+ * Set the thresholds for sensor 2 to 50 C and 60 C:
+ * write 2 to [0x05] -- select temp sensor 2
+ * write 0x7b to [0x06] -- C_TO_K(50) - EC_TEMP_SENSOR_OFFSET
+ * write 0x2 to [0x07] -- enable threshold 0 with this value
+ * write 0x85 to [0x06] -- C_TO_K(60) - EC_TEMP_SENSOR_OFFSET
+ * write 0x3 to [0x07] -- enable threshold 1 with this value
+ *
+ * Disable the 60 C threshold, leaving the 50 C threshold unchanged:
+ * write 2 to [0x05] -- select temp sensor 2
+ * write 0x1 to [0x07] -- disable threshold 1
+ */
+
+/* DPTF battery charging current limit */
+#define EC_ACPI_MEM_CHARGING_LIMIT 0x08
+
+/* Charging limit is specified in 64 mA steps */
+#define EC_ACPI_MEM_CHARGING_LIMIT_STEP_MA 64
+/* Value to disable DPTF battery charging limit */
+#define EC_ACPI_MEM_CHARGING_LIMIT_DISABLED 0xff
+
+/*
+ * Report device orientation
+ * Bits Definition
+ * 3:1 Device DPTF Profile Number (DDPN)
+ * 0 = Reserved for backward compatibility (indicates no valid
+ * profile number. Host should fall back to using TBMD).
+ * 1..7 = DPTF Profile number to indicate to host which table needs
+ * to be loaded.
+ * 0 Tablet Mode Device Indicator (TBMD)
+ */
+#define EC_ACPI_MEM_DEVICE_ORIENTATION 0x09
+#define EC_ACPI_MEM_TBMD_SHIFT 0
+#define EC_ACPI_MEM_TBMD_MASK 0x1
+#define EC_ACPI_MEM_DDPN_SHIFT 1
+#define EC_ACPI_MEM_DDPN_MASK 0x7
+
+/*
+ * Report device features. Uses the same format as the host command, except:
+ *
+ * bit 0 (EC_FEATURE_LIMITED) changes meaning from "EC code has a limited set
+ * of features", which is of limited interest when the system is already
+ * interpreting ACPI bytecode, to "EC_FEATURES[0-7] is not supported". Since
+ * these are supported, it defaults to 0.
+ * This allows detecting the presence of this field since older versions of
+ * the EC codebase would simply return 0xff to that unknown address. Check
+ * FEATURES0 != 0xff (or FEATURES0[0] == 0) to make sure that the other bits
+ * are valid.
+ */
+#define EC_ACPI_MEM_DEVICE_FEATURES0 0x0a
+#define EC_ACPI_MEM_DEVICE_FEATURES1 0x0b
+#define EC_ACPI_MEM_DEVICE_FEATURES2 0x0c
+#define EC_ACPI_MEM_DEVICE_FEATURES3 0x0d
+#define EC_ACPI_MEM_DEVICE_FEATURES4 0x0e
+#define EC_ACPI_MEM_DEVICE_FEATURES5 0x0f
+#define EC_ACPI_MEM_DEVICE_FEATURES6 0x10
+#define EC_ACPI_MEM_DEVICE_FEATURES7 0x11
+
+#define EC_ACPI_MEM_BATTERY_INDEX 0x12
+
+/*
+ * USB Port Power. Each bit indicates whether the corresponding USB ports' power
+ * is enabled (1) or disabled (0).
+ * bit 0 USB port ID 0
+ * ...
+ * bit 7 USB port ID 7
+ */
+#define EC_ACPI_MEM_USB_PORT_POWER 0x13
+
+/*
+ * ACPI addresses 0x20 - 0xff map to EC_MEMMAP offset 0x00 - 0xdf. This data
+ * is read-only from the AP. Added in EC_ACPI_MEM_VERSION 2.
+ */
+#define EC_ACPI_MEM_MAPPED_BEGIN 0x20
+#define EC_ACPI_MEM_MAPPED_SIZE 0xe0
+
+/* Current version of ACPI memory address space */
+#define EC_ACPI_MEM_VERSION_CURRENT 2
+
+
/*
* This header file is used in coreboot both in C and ACPI code. The ACPI code
* is pre-processed to handle constants but the ASL compiler is unable to
* handle actual C code so keep it separate.
*/
-#ifndef __ACPI__
+
+
+/*
+ * Attributes for EC request and response packets. Just defining __packed
+ * results in inefficient assembly code on ARM, if the structure is actually
+ * 32-bit aligned, as it should be for all buffers.
+ *
+ * Be very careful when adding these to existing structures. They will round
+ * up the structure size to the specified boundary.
+ *
+ * Also be very careful to make that if a structure is included in some other
+ * parent structure that the alignment will still be true given the packing of
+ * the parent structure. This is particularly important if the sub-structure
+ * will be passed as a pointer to another function, since that function will
+ * not know about the misaligment caused by the parent structure's packing.
+ *
+ * Also be very careful using __packed - particularly when nesting non-packed
+ * structures inside packed ones. In fact, DO NOT use __packed directly;
+ * always use one of these attributes.
+ *
+ * Once everything is annotated properly, the following search strings should
+ * not return ANY matches in this file other than right here:
+ *
+ * "__packed" - generates inefficient code; all sub-structs must also be packed
+ *
+ * "struct [^_]" - all structs should be annotated, except for structs that are
+ * members of other structs/unions (and their original declarations should be
+ * annotated).
+ */
/*
- * Define __packed if someone hasn't beat us to it. Linux kernel style
- * checking prefers __packed over __attribute__((packed)).
+ * Packed structures make no assumption about alignment, so they do inefficient
+ * byte-wise reads.
*/
-#ifndef __packed
-#define __packed __attribute__((packed))
-#endif
+#define __ec_align1 __packed
+#define __ec_align2 __packed
+#define __ec_align4 __packed
+#define __ec_align_size1 __packed
+#define __ec_align_offset1 __packed
+#define __ec_align_offset2 __packed
+#define __ec_todo_packed __packed
+#define __ec_todo_unpacked
+
/* LPC command status byte masks */
/* EC has written a byte in the data register and host hasn't read it yet */
@@ -198,7 +439,7 @@
#define EC_LPC_STATUS_PROCESSING 0x04
/* Last write to EC was a command, not data */
#define EC_LPC_STATUS_LAST_CMD 0x08
-/* EC is in burst mode. Unsupported by Chrome EC, so this bit is never set */
+/* EC is in burst mode */
#define EC_LPC_STATUS_BURST_MODE 0x10
/* SCI event is pending (requesting SCI query) */
#define EC_LPC_STATUS_SCI_PENDING 0x20
@@ -214,7 +455,10 @@
#define EC_LPC_STATUS_BUSY_MASK \
(EC_LPC_STATUS_FROM_HOST | EC_LPC_STATUS_PROCESSING)
-/* Host command response codes */
+/*
+ * Host command response codes (16-bit). Note that response codes should be
+ * stored in a uint16_t rather than directly in a value of this type.
+ */
enum ec_status {
EC_RES_SUCCESS = 0,
EC_RES_INVALID_COMMAND = 1,
@@ -230,7 +474,13 @@ enum ec_status {
EC_RES_OVERFLOW = 11, /* Table / data overflow */
EC_RES_INVALID_HEADER = 12, /* Header contains invalid data */
EC_RES_REQUEST_TRUNCATED = 13, /* Didn't get the entire request */
- EC_RES_RESPONSE_TOO_BIG = 14 /* Response was too big to handle */
+ EC_RES_RESPONSE_TOO_BIG = 14, /* Response was too big to handle */
+ EC_RES_BUS_ERROR = 15, /* Communications bus error */
+ EC_RES_BUSY = 16, /* Up but too busy. Should retry */
+ EC_RES_INVALID_HEADER_VERSION = 17, /* Header version invalid */
+ EC_RES_INVALID_HEADER_CRC = 18, /* Header CRC invalid */
+ EC_RES_INVALID_DATA_CRC = 19, /* Data CRC invalid */
+ EC_RES_DUP_UNAVAILABLE = 20, /* Can't resend response */
};
/*
@@ -250,7 +500,8 @@ enum host_event_code {
EC_HOST_EVENT_BATTERY_CRITICAL = 7,
EC_HOST_EVENT_BATTERY = 8,
EC_HOST_EVENT_THERMAL_THRESHOLD = 9,
- EC_HOST_EVENT_THERMAL_OVERLOAD = 10,
+ /* Event generated by a device attached to the EC */
+ EC_HOST_EVENT_DEVICE = 10,
EC_HOST_EVENT_THERMAL = 11,
EC_HOST_EVENT_USB_CHARGER = 12,
EC_HOST_EVENT_KEY_PRESSED = 13,
@@ -277,15 +528,34 @@ enum host_event_code {
EC_HOST_EVENT_HANG_DETECT = 20,
/* Hang detect logic detected a hang and warm rebooted the AP */
EC_HOST_EVENT_HANG_REBOOT = 21,
+
/* PD MCU triggering host event */
EC_HOST_EVENT_PD_MCU = 22,
- /* EC desires to change state of host-controlled USB mux */
- EC_HOST_EVENT_USB_MUX = 28,
+ /* Battery Status flags have changed */
+ EC_HOST_EVENT_BATTERY_STATUS = 23,
+
+ /* EC encountered a panic, triggering a reset */
+ EC_HOST_EVENT_PANIC = 24,
+
+ /* Keyboard fastboot combo has been pressed */
+ EC_HOST_EVENT_KEYBOARD_FASTBOOT = 25,
/* EC RTC event occurred */
EC_HOST_EVENT_RTC = 26,
+ /* Emulate MKBP event */
+ EC_HOST_EVENT_MKBP = 27,
+
+ /* EC desires to change state of host-controlled USB mux */
+ EC_HOST_EVENT_USB_MUX = 28,
+
+ /* TABLET/LAPTOP mode or detachable base attach/detach event */
+ EC_HOST_EVENT_MODE_CHANGE = 29,
+
+ /* Keyboard recovery combo with hardware reinitialization */
+ EC_HOST_EVENT_KEYBOARD_RECOVERY_HW_REINIT = 30,
+
/*
* The high bit of the event mask is not used as a host event code. If
* it reads back as set, then the entire event mask should be
@@ -296,7 +566,7 @@ enum host_event_code {
EC_HOST_EVENT_INVALID = 32
};
/* Host event mask */
-#define EC_HOST_EVENT_MASK(event_code) (1UL << ((event_code) - 1))
+#define EC_HOST_EVENT_MASK(event_code) BIT_ULL((event_code) - 1)
/**
* struct ec_lpc_host_args - Arguments at EC_LPC_ADDR_HOST_ARGS
@@ -311,7 +581,7 @@ struct ec_lpc_host_args {
uint8_t command_version;
uint8_t data_size;
uint8_t checksum;
-} __packed;
+} __ec_align4;
/* Flags for ec_lpc_host_args.flags */
/*
@@ -321,7 +591,7 @@ struct ec_lpc_host_args {
* If EC gets a command and this flag is not set, this is an old-style command.
* Command version is 0 and params from host are at EC_LPC_ADDR_OLD_PARAM with
* unknown length. EC must respond with an old-style response (that is,
- * withouth setting EC_HOST_ARGS_FLAG_TO_HOST).
+ * without setting EC_HOST_ARGS_FLAG_TO_HOST).
*/
#define EC_HOST_ARGS_FLAG_FROM_HOST 0x01
/*
@@ -482,7 +752,7 @@ struct ec_host_request {
uint8_t command_version;
uint8_t reserved;
uint16_t data_len;
-} __packed;
+} __ec_align4;
#define EC_HOST_RESPONSE_VERSION 3
@@ -501,18 +771,151 @@ struct ec_host_response {
uint16_t result;
uint16_t data_len;
uint16_t reserved;
-} __packed;
+} __ec_align4;
+
+/*****************************************************************************/
+
+/*
+ * Host command protocol V4.
+ *
+ * Packets always start with a request or response header. They are followed
+ * by data_len bytes of data. If the data_crc_present flag is set, the data
+ * bytes are followed by a CRC-8 of that data, using using x^8 + x^2 + x + 1
+ * polynomial.
+ *
+ * Host algorithm when sending a request q:
+ *
+ * 101) tries_left=(some value, e.g. 3);
+ * 102) q.seq_num++
+ * 103) q.seq_dup=0
+ * 104) Calculate q.header_crc.
+ * 105) Send request q to EC.
+ * 106) Wait for response r. Go to 201 if received or 301 if timeout.
+ *
+ * 201) If r.struct_version != 4, go to 301.
+ * 202) If r.header_crc mismatches calculated CRC for r header, go to 301.
+ * 203) If r.data_crc_present and r.data_crc mismatches, go to 301.
+ * 204) If r.seq_num != q.seq_num, go to 301.
+ * 205) If r.seq_dup == q.seq_dup, return success.
+ * 207) If r.seq_dup == 1, go to 301.
+ * 208) Return error.
+ *
+ * 301) If --tries_left <= 0, return error.
+ * 302) If q.seq_dup == 1, go to 105.
+ * 303) q.seq_dup = 1
+ * 304) Go to 104.
+ *
+ * EC algorithm when receiving a request q.
+ * EC has response buffer r, error buffer e.
+ *
+ * 101) If q.struct_version != 4, set e.result = EC_RES_INVALID_HEADER_VERSION
+ * and go to 301
+ * 102) If q.header_crc mismatches calculated CRC, set e.result =
+ * EC_RES_INVALID_HEADER_CRC and go to 301
+ * 103) If q.data_crc_present, calculate data CRC. If that mismatches the CRC
+ * byte at the end of the packet, set e.result = EC_RES_INVALID_DATA_CRC
+ * and go to 301.
+ * 104) If q.seq_dup == 0, go to 201.
+ * 105) If q.seq_num != r.seq_num, go to 201.
+ * 106) If q.seq_dup == r.seq_dup, go to 205, else go to 203.
+ *
+ * 201) Process request q into response r.
+ * 202) r.seq_num = q.seq_num
+ * 203) r.seq_dup = q.seq_dup
+ * 204) Calculate r.header_crc
+ * 205) If r.data_len > 0 and data is no longer available, set e.result =
+ * EC_RES_DUP_UNAVAILABLE and go to 301.
+ * 206) Send response r.
+ *
+ * 301) e.seq_num = q.seq_num
+ * 302) e.seq_dup = q.seq_dup
+ * 303) Calculate e.header_crc.
+ * 304) Send error response e.
+ */
+
+/* Version 4 request from host */
+struct ec_host_request4 {
+ /*
+ * bits 0-3: struct_version: Structure version (=4)
+ * bit 4: is_response: Is response (=0)
+ * bits 5-6: seq_num: Sequence number
+ * bit 7: seq_dup: Sequence duplicate flag
+ */
+ uint8_t fields0;
+
+ /*
+ * bits 0-4: command_version: Command version
+ * bits 5-6: Reserved (set 0, ignore on read)
+ * bit 7: data_crc_present: Is data CRC present after data
+ */
+ uint8_t fields1;
+
+ /* Command code (EC_CMD_*) */
+ uint16_t command;
+
+ /* Length of data which follows this header (not including data CRC) */
+ uint16_t data_len;
+
+ /* Reserved (set 0, ignore on read) */
+ uint8_t reserved;
+
+ /* CRC-8 of above fields, using x^8 + x^2 + x + 1 polynomial */
+ uint8_t header_crc;
+} __ec_align4;
+
+/* Version 4 response from EC */
+struct ec_host_response4 {
+ /*
+ * bits 0-3: struct_version: Structure version (=4)
+ * bit 4: is_response: Is response (=1)
+ * bits 5-6: seq_num: Sequence number
+ * bit 7: seq_dup: Sequence duplicate flag
+ */
+ uint8_t fields0;
+
+ /*
+ * bits 0-6: Reserved (set 0, ignore on read)
+ * bit 7: data_crc_present: Is data CRC present after data
+ */
+ uint8_t fields1;
+
+ /* Result code (EC_RES_*) */
+ uint16_t result;
+
+ /* Length of data which follows this header (not including data CRC) */
+ uint16_t data_len;
+
+ /* Reserved (set 0, ignore on read) */
+ uint8_t reserved;
+
+ /* CRC-8 of above fields, using x^8 + x^2 + x + 1 polynomial */
+ uint8_t header_crc;
+} __ec_align4;
+
+/* Fields in fields0 byte */
+#define EC_PACKET4_0_STRUCT_VERSION_MASK 0x0f
+#define EC_PACKET4_0_IS_RESPONSE_MASK 0x10
+#define EC_PACKET4_0_SEQ_NUM_SHIFT 5
+#define EC_PACKET4_0_SEQ_NUM_MASK 0x60
+#define EC_PACKET4_0_SEQ_DUP_MASK 0x80
+
+/* Fields in fields1 byte */
+#define EC_PACKET4_1_COMMAND_VERSION_MASK 0x1f /* (request only) */
+#define EC_PACKET4_1_DATA_CRC_PRESENT_MASK 0x80
/*****************************************************************************/
/*
* Notes on commands:
*
* Each command is an 16-bit command value. Commands which take params or
- * return response data specify structs for that data. If no struct is
+ * return response data specify structures for that data. If no structure is
* specified, the command does not input or output data, respectively.
* Parameter/response length is implicit in the structs. Some underlying
* communication protocols (I2C, SPI) may add length or checksum headers, but
* those are implementation-dependent and not defined here.
+ *
+ * All commands MUST be #defined to be 4-digit UPPER CASE hex values
+ * (e.g., 0x00AB, not 0xab) for CONFIG_HOSTCMD_SECTION_SORTED to work.
*/
/*****************************************************************************/
@@ -522,7 +925,7 @@ struct ec_host_response {
* Get protocol version, used to deal with non-backward compatible protocol
* changes.
*/
-#define EC_CMD_PROTO_VERSION 0x00
+#define EC_CMD_PROTO_VERSION 0x0000
/**
* struct ec_response_proto_version - Response to the proto version command.
@@ -530,13 +933,13 @@ struct ec_host_response {
*/
struct ec_response_proto_version {
uint32_t version;
-} __packed;
+} __ec_align4;
/*
* Hello. This is a simple command to test the EC is responsive to
* commands.
*/
-#define EC_CMD_HELLO 0x01
+#define EC_CMD_HELLO 0x0001
/**
* struct ec_params_hello - Parameters to the hello command.
@@ -544,7 +947,7 @@ struct ec_response_proto_version {
*/
struct ec_params_hello {
uint32_t in_data;
-} __packed;
+} __ec_align4;
/**
* struct ec_response_hello - Response to the hello command.
@@ -552,10 +955,10 @@ struct ec_params_hello {
*/
struct ec_response_hello {
uint32_t out_data;
-} __packed;
+} __ec_align4;
/* Get version number */
-#define EC_CMD_GET_VERSION 0x02
+#define EC_CMD_GET_VERSION 0x0002
enum ec_current_image {
EC_IMAGE_UNKNOWN = 0,
@@ -575,10 +978,10 @@ struct ec_response_get_version {
char version_string_rw[32];
char reserved[32];
uint32_t current_image;
-} __packed;
+} __ec_align4;
/* Read test */
-#define EC_CMD_READ_TEST 0x03
+#define EC_CMD_READ_TEST 0x0003
/**
* struct ec_params_read_test - Parameters for the read test command.
@@ -588,7 +991,7 @@ struct ec_response_get_version {
struct ec_params_read_test {
uint32_t offset;
uint32_t size;
-} __packed;
+} __ec_align4;
/**
* struct ec_response_read_test - Response to the read test command.
@@ -596,17 +999,17 @@ struct ec_params_read_test {
*/
struct ec_response_read_test {
uint32_t data[32];
-} __packed;
+} __ec_align4;
/*
* Get build information
*
* Response is null-terminated string.
*/
-#define EC_CMD_GET_BUILD_INFO 0x04
+#define EC_CMD_GET_BUILD_INFO 0x0004
/* Get chip info */
-#define EC_CMD_GET_CHIP_INFO 0x05
+#define EC_CMD_GET_CHIP_INFO 0x0005
/**
* struct ec_response_get_chip_info - Response to the get chip info command.
@@ -618,10 +1021,10 @@ struct ec_response_get_chip_info {
char vendor[32];
char name[32];
char revision[32];
-} __packed;
+} __ec_align4;
/* Get board HW version */
-#define EC_CMD_GET_BOARD_VERSION 0x06
+#define EC_CMD_GET_BOARD_VERSION 0x0006
/**
* struct ec_response_board_version - Response to the board version command.
@@ -629,7 +1032,7 @@ struct ec_response_get_chip_info {
*/
struct ec_response_board_version {
uint16_t board_version;
-} __packed;
+} __ec_align2;
/*
* Read memory-mapped data.
@@ -639,7 +1042,7 @@ struct ec_response_board_version {
*
* Response is params.size bytes of data.
*/
-#define EC_CMD_READ_MEMMAP 0x07
+#define EC_CMD_READ_MEMMAP 0x0007
/**
* struct ec_params_read_memmap - Parameters for the read memory map command.
@@ -649,10 +1052,10 @@ struct ec_response_board_version {
struct ec_params_read_memmap {
uint8_t offset;
uint8_t size;
-} __packed;
+} __ec_align1;
/* Read versions supported for a command */
-#define EC_CMD_GET_CMD_VERSIONS 0x08
+#define EC_CMD_GET_CMD_VERSIONS 0x0008
/**
* struct ec_params_get_cmd_versions - Parameters for the get command versions.
@@ -660,7 +1063,7 @@ struct ec_params_read_memmap {
*/
struct ec_params_get_cmd_versions {
uint8_t cmd;
-} __packed;
+} __ec_align1;
/**
* struct ec_params_get_cmd_versions_v1 - Parameters for the get command
@@ -669,7 +1072,7 @@ struct ec_params_get_cmd_versions {
*/
struct ec_params_get_cmd_versions_v1 {
uint16_t cmd;
-} __packed;
+} __ec_align2;
/**
* struct ec_response_get_cmd_version - Response to the get command versions.
@@ -678,20 +1081,20 @@ struct ec_params_get_cmd_versions_v1 {
*/
struct ec_response_get_cmd_versions {
uint32_t version_mask;
-} __packed;
+} __ec_align4;
/*
- * Check EC communcations status (busy). This is needed on i2c/spi but not
+ * Check EC communications status (busy). This is needed on i2c/spi but not
* on lpc since it has its own out-of-band busy indicator.
*
* lpc must read the status from the command register. Attempting this on
* lpc will overwrite the args/parameter space and corrupt its data.
*/
-#define EC_CMD_GET_COMMS_STATUS 0x09
+#define EC_CMD_GET_COMMS_STATUS 0x0009
/* Avoid using ec_status which is for return values */
enum ec_comms_status {
- EC_COMMS_STATUS_PROCESSING = 1 << 0, /* Processing cmd */
+ EC_COMMS_STATUS_PROCESSING = BIT(0), /* Processing cmd */
};
/**
@@ -701,29 +1104,29 @@ enum ec_comms_status {
*/
struct ec_response_get_comms_status {
uint32_t flags; /* Mask of enum ec_comms_status */
-} __packed;
+} __ec_align4;
/* Fake a variety of responses, purely for testing purposes. */
-#define EC_CMD_TEST_PROTOCOL 0x0a
+#define EC_CMD_TEST_PROTOCOL 0x000A
/* Tell the EC what to send back to us. */
struct ec_params_test_protocol {
uint32_t ec_result;
uint32_t ret_len;
uint8_t buf[32];
-} __packed;
+} __ec_align4;
/* Here it comes... */
struct ec_response_test_protocol {
uint8_t buf[32];
-} __packed;
+} __ec_align4;
-/* Get prococol information */
-#define EC_CMD_GET_PROTOCOL_INFO 0x0b
+/* Get protocol information */
+#define EC_CMD_GET_PROTOCOL_INFO 0x000B
/* Flags for ec_response_get_protocol_info.flags */
/* EC_RES_IN_PROGRESS may be returned if a command is slow */
-#define EC_PROTOCOL_INFO_IN_PROGRESS_SUPPORTED (1 << 0)
+#define EC_PROTOCOL_INFO_IN_PROGRESS_SUPPORTED BIT(0)
/**
* struct ec_response_get_protocol_info - Response to the get protocol info.
@@ -739,7 +1142,7 @@ struct ec_response_get_protocol_info {
uint16_t max_request_packet_size;
uint16_t max_response_packet_size;
uint32_t flags;
-} __packed;
+} __ec_align4;
/*****************************************************************************/
@@ -757,19 +1160,19 @@ struct ec_response_get_protocol_info {
struct ec_params_get_set_value {
uint32_t flags;
uint32_t value;
-} __packed;
+} __ec_align4;
struct ec_response_get_set_value {
uint32_t flags;
uint32_t value;
-} __packed;
+} __ec_align4;
-/* More than one command can use these structs to get/set paramters. */
-#define EC_CMD_GSV_PAUSE_IN_S5 0x0c
+/* More than one command can use these structs to get/set parameters. */
+#define EC_CMD_GSV_PAUSE_IN_S5 0x000C
/*****************************************************************************/
/* List the features supported by the firmware */
-#define EC_CMD_GET_FEATURES 0x0d
+#define EC_CMD_GET_FEATURES 0x000D
/* Supported features */
enum ec_feature_code {
@@ -876,24 +1279,36 @@ enum ec_feature_code {
EC_FEATURE_REFINED_TABLET_MODE_HYSTERESIS = 37,
/* EC supports audio codec. */
EC_FEATURE_AUDIO_CODEC = 38,
- /* EC Supports SCP. */
+ /* The MCU is a System Companion Processor (SCP). */
EC_FEATURE_SCP = 39,
/* The MCU is an Integrated Sensor Hub */
EC_FEATURE_ISH = 40,
};
-#define EC_FEATURE_MASK_0(event_code) (1UL << (event_code % 32))
-#define EC_FEATURE_MASK_1(event_code) (1UL << (event_code - 32))
+#define EC_FEATURE_MASK_0(event_code) BIT(event_code % 32)
+#define EC_FEATURE_MASK_1(event_code) BIT(event_code - 32)
struct ec_response_get_features {
uint32_t flags[2];
-} __packed;
+} __ec_align4;
+
+/*****************************************************************************/
+/* Get the board's SKU ID from EC */
+#define EC_CMD_GET_SKU_ID 0x000E
+
+/* Set SKU ID from AP */
+#define EC_CMD_SET_SKU_ID 0x000F
+
+struct ec_sku_id_info {
+ uint32_t sku_id;
+} __ec_align4;
/*****************************************************************************/
/* Flash commands */
/* Get flash info */
-#define EC_CMD_FLASH_INFO 0x10
+#define EC_CMD_FLASH_INFO 0x0010
+#define EC_VER_FLASH_INFO 2
/**
* struct ec_response_flash_info - Response to the flash info command.
@@ -912,11 +1327,22 @@ struct ec_response_flash_info {
uint32_t write_block_size;
uint32_t erase_block_size;
uint32_t protect_block_size;
-} __packed;
+} __ec_align4;
+
+/*
+ * Flags for version 1+ flash info command
+ * EC flash erases bits to 0 instead of 1.
+ */
+#define EC_FLASH_INFO_ERASE_TO_0 BIT(0)
-/* Flags for version 1+ flash info command */
-/* EC flash erases bits to 0 instead of 1 */
-#define EC_FLASH_INFO_ERASE_TO_0 (1 << 0)
+/*
+ * Flash must be selected for read/write/erase operations to succeed. This may
+ * be necessary on a chip where write/erase can be corrupted by other board
+ * activity, or where the chip needs to enable some sort of programming voltage,
+ * or where the read/write/erase operations require cleanly suspending other
+ * chip functionality.
+ */
+#define EC_FLASH_INFO_SELECT_REQUIRED BIT(1)
/**
* struct ec_response_flash_info_1 - Response to the flash info v1 command.
@@ -938,7 +1364,14 @@ struct ec_response_flash_info {
* fields following.
*
* gcc anonymous structs don't seem to get along with the __packed directive;
- * if they did we'd define the version 0 struct as a sub-struct of this one.
+ * if they did we'd define the version 0 structure as a sub-structure of this
+ * one.
+ *
+ * Version 2 supports flash banks of different sizes:
+ * The caller specified the number of banks it has preallocated
+ * (num_banks_desc)
+ * The EC returns the number of banks describing the flash memory.
+ * It adds banks descriptions up to num_banks_desc.
*/
struct ec_response_flash_info_1 {
/* Version 0 fields; see above for description */
@@ -950,14 +1383,50 @@ struct ec_response_flash_info_1 {
/* Version 1 adds these fields: */
uint32_t write_ideal_size;
uint32_t flags;
-} __packed;
+} __ec_align4;
+
+struct ec_params_flash_info_2 {
+ /* Number of banks to describe */
+ uint16_t num_banks_desc;
+ /* Reserved; set 0; ignore on read */
+ uint8_t reserved[2];
+} __ec_align4;
+
+struct ec_flash_bank {
+ /* Number of sector is in this bank. */
+ uint16_t count;
+ /* Size in power of 2 of each sector (8 --> 256 bytes) */
+ uint8_t size_exp;
+ /* Minimal write size for the sectors in this bank */
+ uint8_t write_size_exp;
+ /* Erase size for the sectors in this bank */
+ uint8_t erase_size_exp;
+ /* Size for write protection, usually identical to erase size. */
+ uint8_t protect_size_exp;
+ /* Reserved; set 0; ignore on read */
+ uint8_t reserved[2];
+};
+
+struct ec_response_flash_info_2 {
+ /* Total flash in the EC. */
+ uint32_t flash_size;
+ /* Flags; see EC_FLASH_INFO_* */
+ uint32_t flags;
+ /* Maximum size to use to send data to write to the EC. */
+ uint32_t write_ideal_size;
+ /* Number of banks present in the EC. */
+ uint16_t num_banks_total;
+ /* Number of banks described in banks array. */
+ uint16_t num_banks_desc;
+ struct ec_flash_bank banks[0];
+} __ec_align4;
/*
* Read flash
*
* Response is params.size bytes of data.
*/
-#define EC_CMD_FLASH_READ 0x11
+#define EC_CMD_FLASH_READ 0x0011
/**
* struct ec_params_flash_read - Parameters for the flash read command.
@@ -967,10 +1436,10 @@ struct ec_response_flash_info_1 {
struct ec_params_flash_read {
uint32_t offset;
uint32_t size;
-} __packed;
+} __ec_align4;
/* Write flash */
-#define EC_CMD_FLASH_WRITE 0x12
+#define EC_CMD_FLASH_WRITE 0x0012
#define EC_VER_FLASH_WRITE 1
/* Version 0 of the flash command supported only 64 bytes of data */
@@ -985,20 +1454,57 @@ struct ec_params_flash_write {
uint32_t offset;
uint32_t size;
/* Followed by data to write */
-} __packed;
+} __ec_align4;
/* Erase flash */
-#define EC_CMD_FLASH_ERASE 0x13
+#define EC_CMD_FLASH_ERASE 0x0013
/**
- * struct ec_params_flash_erase - Parameters for the flash erase command.
+ * struct ec_params_flash_erase - Parameters for the flash erase command, v0.
* @offset: Byte offset to erase.
* @size: Size to erase in bytes.
*/
struct ec_params_flash_erase {
uint32_t offset;
uint32_t size;
-} __packed;
+} __ec_align4;
+
+/*
+ * v1 add async erase:
+ * subcommands can returns:
+ * EC_RES_SUCCESS : erased (see ERASE_SECTOR_ASYNC case below).
+ * EC_RES_INVALID_PARAM : offset/size are not aligned on a erase boundary.
+ * EC_RES_ERROR : other errors.
+ * EC_RES_BUSY : an existing erase operation is in progress.
+ * EC_RES_ACCESS_DENIED: Trying to erase running image.
+ *
+ * When ERASE_SECTOR_ASYNC returns EC_RES_SUCCESS, the operation is just
+ * properly queued. The user must call ERASE_GET_RESULT subcommand to get
+ * the proper result.
+ * When ERASE_GET_RESULT returns EC_RES_BUSY, the caller must wait and send
+ * ERASE_GET_RESULT again to get the result of ERASE_SECTOR_ASYNC.
+ * ERASE_GET_RESULT command may timeout on EC where flash access is not
+ * permitted while erasing. (For instance, STM32F4).
+ */
+enum ec_flash_erase_cmd {
+ FLASH_ERASE_SECTOR, /* Erase and wait for result */
+ FLASH_ERASE_SECTOR_ASYNC, /* Erase and return immediately. */
+ FLASH_ERASE_GET_RESULT, /* Ask for last erase result */
+};
+
+/**
+ * struct ec_params_flash_erase_v1 - Parameters for the flash erase command, v1.
+ * @cmd: One of ec_flash_erase_cmd.
+ * @reserved: Pad byte; currently always contains 0.
+ * @flag: No flags defined yet; set to 0.
+ * @params: Same as v0 parameters.
+ */
+struct ec_params_flash_erase_v1 {
+ uint8_t cmd;
+ uint8_t reserved;
+ uint16_t flag;
+ struct ec_params_flash_erase params;
+} __ec_align4;
/*
* Get/set flash protection.
@@ -1010,31 +1516,40 @@ struct ec_params_flash_erase {
*
* If mask=0, simply returns the current flags state.
*/
-#define EC_CMD_FLASH_PROTECT 0x15
+#define EC_CMD_FLASH_PROTECT 0x0015
#define EC_VER_FLASH_PROTECT 1 /* Command version 1 */
/* Flags for flash protection */
/* RO flash code protected when the EC boots */
-#define EC_FLASH_PROTECT_RO_AT_BOOT (1 << 0)
+#define EC_FLASH_PROTECT_RO_AT_BOOT BIT(0)
/*
* RO flash code protected now. If this bit is set, at-boot status cannot
* be changed.
*/
-#define EC_FLASH_PROTECT_RO_NOW (1 << 1)
+#define EC_FLASH_PROTECT_RO_NOW BIT(1)
/* Entire flash code protected now, until reboot. */
-#define EC_FLASH_PROTECT_ALL_NOW (1 << 2)
+#define EC_FLASH_PROTECT_ALL_NOW BIT(2)
/* Flash write protect GPIO is asserted now */
-#define EC_FLASH_PROTECT_GPIO_ASSERTED (1 << 3)
+#define EC_FLASH_PROTECT_GPIO_ASSERTED BIT(3)
/* Error - at least one bank of flash is stuck locked, and cannot be unlocked */
-#define EC_FLASH_PROTECT_ERROR_STUCK (1 << 4)
+#define EC_FLASH_PROTECT_ERROR_STUCK BIT(4)
/*
* Error - flash protection is in inconsistent state. At least one bank of
* flash which should be protected is not protected. Usually fixed by
* re-requesting the desired flags, or by a hard reset if that fails.
*/
-#define EC_FLASH_PROTECT_ERROR_INCONSISTENT (1 << 5)
-/* Entile flash code protected when the EC boots */
-#define EC_FLASH_PROTECT_ALL_AT_BOOT (1 << 6)
+#define EC_FLASH_PROTECT_ERROR_INCONSISTENT BIT(5)
+/* Entire flash code protected when the EC boots */
+#define EC_FLASH_PROTECT_ALL_AT_BOOT BIT(6)
+/* RW flash code protected when the EC boots */
+#define EC_FLASH_PROTECT_RW_AT_BOOT BIT(7)
+/* RW flash code protected now. */
+#define EC_FLASH_PROTECT_RW_NOW BIT(8)
+/* Rollback information flash region protected when the EC boots */
+#define EC_FLASH_PROTECT_ROLLBACK_AT_BOOT BIT(9)
+/* Rollback information flash region protected now */
+#define EC_FLASH_PROTECT_ROLLBACK_NOW BIT(10)
+
/**
* struct ec_params_flash_protect - Parameters for the flash protect command.
@@ -1044,7 +1559,7 @@ struct ec_params_flash_erase {
struct ec_params_flash_protect {
uint32_t mask;
uint32_t flags;
-} __packed;
+} __ec_align4;
/**
* struct ec_response_flash_protect - Response to the flash protect command.
@@ -1059,7 +1574,7 @@ struct ec_response_flash_protect {
uint32_t flags;
uint32_t valid_flags;
uint32_t writable_flags;
-} __packed;
+} __ec_align4;
/*
* Note: commands 0x14 - 0x19 version 0 were old commands to get/set flash
@@ -1067,22 +1582,37 @@ struct ec_response_flash_protect {
*/
/* Get the region offset/size */
-#define EC_CMD_FLASH_REGION_INFO 0x16
+#define EC_CMD_FLASH_REGION_INFO 0x0016
#define EC_VER_FLASH_REGION_INFO 1
enum ec_flash_region {
/* Region which holds read-only EC image */
EC_FLASH_REGION_RO = 0,
- /* Region which holds rewritable EC image */
- EC_FLASH_REGION_RW,
+ /*
+ * Region which holds active RW image. 'Active' is different from
+ * 'running'. Active means 'scheduled-to-run'. Since RO image always
+ * scheduled to run, active/non-active applies only to RW images (for
+ * the same reason 'update' applies only to RW images. It's a state of
+ * an image on a flash. Running image can be RO, RW_A, RW_B but active
+ * image can only be RW_A or RW_B. In recovery mode, an active RW image
+ * doesn't enter 'running' state but it's still active on a flash.
+ */
+ EC_FLASH_REGION_ACTIVE,
/*
* Region which should be write-protected in the factory (a superset of
* EC_FLASH_REGION_RO)
*/
EC_FLASH_REGION_WP_RO,
+ /* Region which holds updatable (non-active) RW image */
+ EC_FLASH_REGION_UPDATE,
/* Number of regions */
EC_FLASH_REGION_COUNT,
};
+/*
+ * 'RW' is vague if there are multiple RW images; we mean the active one,
+ * so the old constant is deprecated.
+ */
+#define EC_FLASH_REGION_RW EC_FLASH_REGION_ACTIVE
/**
* struct ec_params_flash_region_info - Parameters for the flash region info
@@ -1091,15 +1621,15 @@ enum ec_flash_region {
*/
struct ec_params_flash_region_info {
uint32_t region;
-} __packed;
+} __ec_align4;
struct ec_response_flash_region_info {
uint32_t offset;
uint32_t size;
-} __packed;
+} __ec_align4;
/* Read/write VbNvContext */
-#define EC_CMD_VBNV_CONTEXT 0x17
+#define EC_CMD_VBNV_CONTEXT 0x0017
#define EC_VER_VBNV_CONTEXT 1
#define EC_VBNV_BLOCK_SIZE 16
@@ -1111,52 +1641,99 @@ enum ec_vbnvcontext_op {
struct ec_params_vbnvcontext {
uint32_t op;
uint8_t block[EC_VBNV_BLOCK_SIZE];
-} __packed;
+} __ec_align4;
struct ec_response_vbnvcontext {
uint8_t block[EC_VBNV_BLOCK_SIZE];
-} __packed;
+} __ec_align4;
+
+
+/* Get SPI flash information */
+#define EC_CMD_FLASH_SPI_INFO 0x0018
+
+struct ec_response_flash_spi_info {
+ /* JEDEC info from command 0x9F (manufacturer, memory type, size) */
+ uint8_t jedec[3];
+
+ /* Pad byte; currently always contains 0 */
+ uint8_t reserved0;
+
+ /* Manufacturer / device ID from command 0x90 */
+ uint8_t mfr_dev_id[2];
+
+ /* Status registers from command 0x05 and 0x35 */
+ uint8_t sr1, sr2;
+} __ec_align1;
+
+
+/* Select flash during flash operations */
+#define EC_CMD_FLASH_SELECT 0x0019
+
+/**
+ * struct ec_params_flash_select - Parameters for the flash select command.
+ * @select: 1 to select flash, 0 to deselect flash
+ */
+struct ec_params_flash_select {
+ uint8_t select;
+} __ec_align4;
+
/*****************************************************************************/
/* PWM commands */
/* Get fan target RPM */
-#define EC_CMD_PWM_GET_FAN_TARGET_RPM 0x20
+#define EC_CMD_PWM_GET_FAN_TARGET_RPM 0x0020
struct ec_response_pwm_get_fan_rpm {
uint32_t rpm;
-} __packed;
+} __ec_align4;
/* Set target fan RPM */
-#define EC_CMD_PWM_SET_FAN_TARGET_RPM 0x21
+#define EC_CMD_PWM_SET_FAN_TARGET_RPM 0x0021
+
+/* Version 0 of input params */
+struct ec_params_pwm_set_fan_target_rpm_v0 {
+ uint32_t rpm;
+} __ec_align4;
-struct ec_params_pwm_set_fan_target_rpm {
+/* Version 1 of input params */
+struct ec_params_pwm_set_fan_target_rpm_v1 {
uint32_t rpm;
-} __packed;
+ uint8_t fan_idx;
+} __ec_align_size1;
/* Get keyboard backlight */
-#define EC_CMD_PWM_GET_KEYBOARD_BACKLIGHT 0x22
+/* OBSOLETE - Use EC_CMD_PWM_SET_DUTY */
+#define EC_CMD_PWM_GET_KEYBOARD_BACKLIGHT 0x0022
struct ec_response_pwm_get_keyboard_backlight {
uint8_t percent;
uint8_t enabled;
-} __packed;
+} __ec_align1;
/* Set keyboard backlight */
-#define EC_CMD_PWM_SET_KEYBOARD_BACKLIGHT 0x23
+/* OBSOLETE - Use EC_CMD_PWM_SET_DUTY */
+#define EC_CMD_PWM_SET_KEYBOARD_BACKLIGHT 0x0023
struct ec_params_pwm_set_keyboard_backlight {
uint8_t percent;
-} __packed;
+} __ec_align1;
/* Set target fan PWM duty cycle */
-#define EC_CMD_PWM_SET_FAN_DUTY 0x24
+#define EC_CMD_PWM_SET_FAN_DUTY 0x0024
+
+/* Version 0 of input params */
+struct ec_params_pwm_set_fan_duty_v0 {
+ uint32_t percent;
+} __ec_align4;
-struct ec_params_pwm_set_fan_duty {
+/* Version 1 of input params */
+struct ec_params_pwm_set_fan_duty_v1 {
uint32_t percent;
-} __packed;
+ uint8_t fan_idx;
+} __ec_align_size1;
-#define EC_CMD_PWM_SET_DUTY 0x25
+#define EC_CMD_PWM_SET_DUTY 0x0025
/* 16 bit duty cycle, 0xffff = 100% */
#define EC_PWM_MAX_DUTY 0xffff
@@ -1174,18 +1751,18 @@ struct ec_params_pwm_set_duty {
uint16_t duty; /* Duty cycle, EC_PWM_MAX_DUTY = 100% */
uint8_t pwm_type; /* ec_pwm_type */
uint8_t index; /* Type-specific index, or 0 if unique */
-} __packed;
+} __ec_align4;
-#define EC_CMD_PWM_GET_DUTY 0x26
+#define EC_CMD_PWM_GET_DUTY 0x0026
struct ec_params_pwm_get_duty {
uint8_t pwm_type; /* ec_pwm_type */
uint8_t index; /* Type-specific index, or 0 if unique */
-} __packed;
+} __ec_align1;
struct ec_response_pwm_get_duty {
uint16_t duty; /* Duty cycle, EC_PWM_MAX_DUTY = 100% */
-} __packed;
+} __ec_align2;
/*****************************************************************************/
/*
@@ -1194,11 +1771,11 @@ struct ec_response_pwm_get_duty {
* into a subcommand. We'll make separate structs for subcommands with
* different input args, so that we know how much to expect.
*/
-#define EC_CMD_LIGHTBAR_CMD 0x28
+#define EC_CMD_LIGHTBAR_CMD 0x0028
struct rgb_s {
uint8_t r, g, b;
-};
+} __ec_todo_unpacked;
#define LB_BATTERY_LEVELS 4
@@ -1238,7 +1815,7 @@ struct lightbar_params_v0 {
/* Color palette */
struct rgb_s color[8]; /* 0-3 are Google colors */
-} __packed;
+} __ec_todo_packed;
struct lightbar_params_v1 {
/* Timing */
@@ -1251,7 +1828,10 @@ struct lightbar_params_v1 {
int32_t s3_sleep_for;
int32_t s3_ramp_up;
int32_t s3_ramp_down;
+ int32_t s5_ramp_up;
+ int32_t s5_ramp_down;
int32_t tap_tick_delay;
+ int32_t tap_gate_delay;
int32_t tap_display_time;
/* Tap-for-battery params */
@@ -1279,84 +1859,182 @@ struct lightbar_params_v1 {
uint8_t s0_idx[2][LB_BATTERY_LEVELS]; /* AP is running */
uint8_t s3_idx[2][LB_BATTERY_LEVELS]; /* AP is sleeping */
+ /* s5: single color pulse on inhibited power-up */
+ uint8_t s5_idx;
+
/* Color palette */
struct rgb_s color[8]; /* 0-3 are Google colors */
-} __packed;
+} __ec_todo_packed;
-/* Lightbar program */
-#define EC_LB_PROG_LEN 192
+/* Lightbar command params v2
+ * crbug.com/467716
+ *
+ * lightbar_parms_v1 was too big for i2c, therefore in v2, we split them up by
+ * logical groups to make it more manageable ( < 120 bytes).
+ *
+ * NOTE: Each of these groups must be less than 120 bytes.
+ */
+
+struct lightbar_params_v2_timing {
+ /* Timing */
+ int32_t google_ramp_up;
+ int32_t google_ramp_down;
+ int32_t s3s0_ramp_up;
+ int32_t s0_tick_delay[2]; /* AC=0/1 */
+ int32_t s0a_tick_delay[2]; /* AC=0/1 */
+ int32_t s0s3_ramp_down;
+ int32_t s3_sleep_for;
+ int32_t s3_ramp_up;
+ int32_t s3_ramp_down;
+ int32_t s5_ramp_up;
+ int32_t s5_ramp_down;
+ int32_t tap_tick_delay;
+ int32_t tap_gate_delay;
+ int32_t tap_display_time;
+} __ec_todo_packed;
+
+struct lightbar_params_v2_tap {
+ /* Tap-for-battery params */
+ uint8_t tap_pct_red;
+ uint8_t tap_pct_green;
+ uint8_t tap_seg_min_on;
+ uint8_t tap_seg_max_on;
+ uint8_t tap_seg_osc;
+ uint8_t tap_idx[3];
+} __ec_todo_packed;
+
+struct lightbar_params_v2_oscillation {
+ /* Oscillation */
+ uint8_t osc_min[2]; /* AC=0/1 */
+ uint8_t osc_max[2]; /* AC=0/1 */
+ uint8_t w_ofs[2]; /* AC=0/1 */
+} __ec_todo_packed;
+
+struct lightbar_params_v2_brightness {
+ /* Brightness limits based on the backlight and AC. */
+ uint8_t bright_bl_off_fixed[2]; /* AC=0/1 */
+ uint8_t bright_bl_on_min[2]; /* AC=0/1 */
+ uint8_t bright_bl_on_max[2]; /* AC=0/1 */
+} __ec_todo_packed;
+
+struct lightbar_params_v2_thresholds {
+ /* Battery level thresholds */
+ uint8_t battery_threshold[LB_BATTERY_LEVELS - 1];
+} __ec_todo_packed;
+
+struct lightbar_params_v2_colors {
+ /* Map [AC][battery_level] to color index */
+ uint8_t s0_idx[2][LB_BATTERY_LEVELS]; /* AP is running */
+ uint8_t s3_idx[2][LB_BATTERY_LEVELS]; /* AP is sleeping */
+
+ /* s5: single color pulse on inhibited power-up */
+ uint8_t s5_idx;
+
+ /* Color palette */
+ struct rgb_s color[8]; /* 0-3 are Google colors */
+} __ec_todo_packed;
+
+/* Lightbar program. */
+#define EC_LB_PROG_LEN 192
struct lightbar_program {
uint8_t size;
uint8_t data[EC_LB_PROG_LEN];
-};
+} __ec_todo_unpacked;
struct ec_params_lightbar {
uint8_t cmd; /* Command (see enum lightbar_command) */
union {
- struct {
- /* no args */
- } dump, off, on, init, get_seq, get_params_v0, get_params_v1,
- version, get_brightness, get_demo, suspend, resume;
+ /*
+ * The following commands have no args:
+ *
+ * dump, off, on, init, get_seq, get_params_v0, get_params_v1,
+ * version, get_brightness, get_demo, suspend, resume,
+ * get_params_v2_timing, get_params_v2_tap, get_params_v2_osc,
+ * get_params_v2_bright, get_params_v2_thlds,
+ * get_params_v2_colors
+ *
+ * Don't use an empty struct, because C++ hates that.
+ */
- struct {
+ struct __ec_todo_unpacked {
uint8_t num;
} set_brightness, seq, demo;
- struct {
+ struct __ec_todo_unpacked {
uint8_t ctrl, reg, value;
} reg;
- struct {
+ struct __ec_todo_unpacked {
uint8_t led, red, green, blue;
} set_rgb;
- struct {
+ struct __ec_todo_unpacked {
uint8_t led;
} get_rgb;
- struct {
+ struct __ec_todo_unpacked {
uint8_t enable;
} manual_suspend_ctrl;
struct lightbar_params_v0 set_params_v0;
struct lightbar_params_v1 set_params_v1;
+
+ struct lightbar_params_v2_timing set_v2par_timing;
+ struct lightbar_params_v2_tap set_v2par_tap;
+ struct lightbar_params_v2_oscillation set_v2par_osc;
+ struct lightbar_params_v2_brightness set_v2par_bright;
+ struct lightbar_params_v2_thresholds set_v2par_thlds;
+ struct lightbar_params_v2_colors set_v2par_colors;
+
struct lightbar_program set_program;
};
-} __packed;
+} __ec_todo_packed;
struct ec_response_lightbar {
union {
- struct {
- struct {
+ struct __ec_todo_unpacked {
+ struct __ec_todo_unpacked {
uint8_t reg;
uint8_t ic0;
uint8_t ic1;
} vals[23];
} dump;
- struct {
+ struct __ec_todo_unpacked {
uint8_t num;
} get_seq, get_brightness, get_demo;
struct lightbar_params_v0 get_params_v0;
struct lightbar_params_v1 get_params_v1;
- struct {
+
+ struct lightbar_params_v2_timing get_params_v2_timing;
+ struct lightbar_params_v2_tap get_params_v2_tap;
+ struct lightbar_params_v2_oscillation get_params_v2_osc;
+ struct lightbar_params_v2_brightness get_params_v2_bright;
+ struct lightbar_params_v2_thresholds get_params_v2_thlds;
+ struct lightbar_params_v2_colors get_params_v2_colors;
+
+ struct __ec_todo_unpacked {
uint32_t num;
uint32_t flags;
} version;
- struct {
+ struct __ec_todo_unpacked {
uint8_t red, green, blue;
} get_rgb;
- struct {
- /* no return params */
- } off, on, init, set_brightness, seq, reg, set_rgb,
- demo, set_params_v0, set_params_v1,
- set_program, manual_suspend_ctrl, suspend, resume;
+ /*
+ * The following commands have no response:
+ *
+ * off, on, init, set_brightness, seq, reg, set_rgb, demo,
+ * set_params_v0, set_params_v1, set_program,
+ * manual_suspend_ctrl, suspend, resume, set_v2par_timing,
+ * set_v2par_tap, set_v2par_osc, set_v2par_bright,
+ * set_v2par_thlds, set_v2par_colors
+ */
};
-} __packed;
+} __ec_todo_packed;
/* Lightbar commands */
enum lightbar_command {
@@ -1382,13 +2060,25 @@ enum lightbar_command {
LIGHTBAR_CMD_MANUAL_SUSPEND_CTRL = 19,
LIGHTBAR_CMD_SUSPEND = 20,
LIGHTBAR_CMD_RESUME = 21,
+ LIGHTBAR_CMD_GET_PARAMS_V2_TIMING = 22,
+ LIGHTBAR_CMD_SET_PARAMS_V2_TIMING = 23,
+ LIGHTBAR_CMD_GET_PARAMS_V2_TAP = 24,
+ LIGHTBAR_CMD_SET_PARAMS_V2_TAP = 25,
+ LIGHTBAR_CMD_GET_PARAMS_V2_OSCILLATION = 26,
+ LIGHTBAR_CMD_SET_PARAMS_V2_OSCILLATION = 27,
+ LIGHTBAR_CMD_GET_PARAMS_V2_BRIGHTNESS = 28,
+ LIGHTBAR_CMD_SET_PARAMS_V2_BRIGHTNESS = 29,
+ LIGHTBAR_CMD_GET_PARAMS_V2_THRESHOLDS = 30,
+ LIGHTBAR_CMD_SET_PARAMS_V2_THRESHOLDS = 31,
+ LIGHTBAR_CMD_GET_PARAMS_V2_COLORS = 32,
+ LIGHTBAR_CMD_SET_PARAMS_V2_COLORS = 33,
LIGHTBAR_NUM_CMDS
};
/*****************************************************************************/
/* LED control commands */
-#define EC_CMD_LED_CONTROL 0x29
+#define EC_CMD_LED_CONTROL 0x0029
enum ec_led_id {
/* LED to indicate battery state of charge */
@@ -1400,13 +2090,21 @@ enum ec_led_id {
EC_LED_ID_POWER_LED,
/* LED on power adapter or its plug */
EC_LED_ID_ADAPTER_LED,
+ /* LED to indicate left side */
+ EC_LED_ID_LEFT_LED,
+ /* LED to indicate right side */
+ EC_LED_ID_RIGHT_LED,
+ /* LED to indicate recovery mode with HW_REINIT */
+ EC_LED_ID_RECOVERY_HW_REINIT_LED,
+ /* LED to indicate sysrq debug mode. */
+ EC_LED_ID_SYSRQ_DEBUG_LED,
EC_LED_ID_COUNT
};
/* LED control flags */
-#define EC_LED_FLAGS_QUERY (1 << 0) /* Query LED capability only */
-#define EC_LED_FLAGS_AUTO (1 << 1) /* Switch LED back to automatic control */
+#define EC_LED_FLAGS_QUERY BIT(0) /* Query LED capability only */
+#define EC_LED_FLAGS_AUTO BIT(1) /* Switch LED back to automatic control */
enum ec_led_colors {
EC_LED_COLOR_RED = 0,
@@ -1414,6 +2112,7 @@ enum ec_led_colors {
EC_LED_COLOR_BLUE,
EC_LED_COLOR_YELLOW,
EC_LED_COLOR_WHITE,
+ EC_LED_COLOR_AMBER,
EC_LED_COLOR_COUNT
};
@@ -1423,7 +2122,7 @@ struct ec_params_led_control {
uint8_t flags; /* Control flags */
uint8_t brightness[EC_LED_COLOR_COUNT];
-} __packed;
+} __ec_align1;
struct ec_response_led_control {
/*
@@ -1434,7 +2133,7 @@ struct ec_response_led_control {
* Other values means the LED is control by PWM.
*/
uint8_t brightness_range[EC_LED_COLOR_COUNT];
-} __packed;
+} __ec_align1;
/*****************************************************************************/
/* Verified boot commands */
@@ -1445,7 +2144,7 @@ struct ec_response_led_control {
*/
/* Verified boot hash command */
-#define EC_CMD_VBOOT_HASH 0x2A
+#define EC_CMD_VBOOT_HASH 0x002A
struct ec_params_vboot_hash {
uint8_t cmd; /* enum ec_vboot_hash_cmd */
@@ -1455,7 +2154,7 @@ struct ec_params_vboot_hash {
uint32_t offset; /* Offset in flash to hash */
uint32_t size; /* Number of bytes to hash */
uint8_t nonce_data[64]; /* Nonce data; ignored if nonce_size=0 */
-} __packed;
+} __ec_align4;
struct ec_response_vboot_hash {
uint8_t status; /* enum ec_vboot_hash_status */
@@ -1465,7 +2164,7 @@ struct ec_response_vboot_hash {
uint32_t offset; /* Offset in flash which was hashed */
uint32_t size; /* Number of bytes hashed */
uint8_t hash_digest[64]; /* Hash digest data */
-} __packed;
+} __ec_align4;
enum ec_vboot_hash_cmd {
EC_VBOOT_HASH_GET = 0, /* Get current hash status */
@@ -1489,15 +2188,22 @@ enum ec_vboot_hash_status {
* If one of these is specified, the EC will automatically update offset and
* size to the correct values for the specified image (RO or RW).
*/
-#define EC_VBOOT_HASH_OFFSET_RO 0xfffffffe
-#define EC_VBOOT_HASH_OFFSET_RW 0xfffffffd
+#define EC_VBOOT_HASH_OFFSET_RO 0xfffffffe
+#define EC_VBOOT_HASH_OFFSET_ACTIVE 0xfffffffd
+#define EC_VBOOT_HASH_OFFSET_UPDATE 0xfffffffc
+
+/*
+ * 'RW' is vague if there are multiple RW images; we mean the active one,
+ * so the old constant is deprecated.
+ */
+#define EC_VBOOT_HASH_OFFSET_RW EC_VBOOT_HASH_OFFSET_ACTIVE
/*****************************************************************************/
/*
* Motion sense commands. We'll make separate structs for sub-commands with
* different input args, so that we know how much to expect.
*/
-#define EC_CMD_MOTION_SENSE_CMD 0x2B
+#define EC_CMD_MOTION_SENSE_CMD 0x002B
/* Motion sense commands */
enum motionsense_command {
@@ -1516,7 +2222,13 @@ enum motionsense_command {
/*
* EC Rate command is a setter/getter command for the EC sampling rate
- * of all motion sensors in milliseconds.
+ * in milliseconds.
+ * It is per sensor, the EC run sample task at the minimum of all
+ * sensors EC_RATE.
+ * For sensors without hardware FIFO, EC_RATE should be equals to 1/ODR
+ * to collect all the sensor samples.
+ * For sensor with hardware FIFO, EC_RATE is used as the maximal delay
+ * to process of all motion sensors in milliseconds.
*/
MOTIONSENSE_CMD_EC_RATE = 2,
@@ -1547,32 +2259,76 @@ enum motionsense_command {
MOTIONSENSE_CMD_DATA = 6,
/*
- * Perform low level calibration.. On sensors that support it, ask to
- * do offset calibration.
+ * Return sensor fifo info.
+ */
+ MOTIONSENSE_CMD_FIFO_INFO = 7,
+
+ /*
+ * Insert a flush element in the fifo and return sensor fifo info.
+ * The host can use that element to synchronize its operation.
+ */
+ MOTIONSENSE_CMD_FIFO_FLUSH = 8,
+
+ /*
+ * Return a portion of the fifo.
+ */
+ MOTIONSENSE_CMD_FIFO_READ = 9,
+
+ /*
+ * Perform low level calibration.
+ * On sensors that support it, ask to do offset calibration.
*/
MOTIONSENSE_CMD_PERFORM_CALIB = 10,
/*
- * Sensor Offset command is a setter/getter command for the offset used
- * for calibration. The offsets can be calculated by the host, or via
+ * Sensor Offset command is a setter/getter command for the offset
+ * used for calibration.
+ * The offsets can be calculated by the host, or via
* PERFORM_CALIB command.
*/
MOTIONSENSE_CMD_SENSOR_OFFSET = 11,
- /* Number of motionsense sub-commands. */
- MOTIONSENSE_NUM_CMDS
-};
+ /*
+ * List available activities for a MOTION sensor.
+ * Indicates if they are enabled or disabled.
+ */
+ MOTIONSENSE_CMD_LIST_ACTIVITIES = 12,
+
+ /*
+ * Activity management
+ * Enable/Disable activity recognition.
+ */
+ MOTIONSENSE_CMD_SET_ACTIVITY = 13,
+
+ /*
+ * Lid Angle
+ */
+ MOTIONSENSE_CMD_LID_ANGLE = 14,
+
+ /*
+ * Allow the FIFO to trigger interrupt via MKBP events.
+ * By default the FIFO does not send interrupt to process the FIFO
+ * until the AP is ready or it is coming from a wakeup sensor.
+ */
+ MOTIONSENSE_CMD_FIFO_INT_ENABLE = 15,
-enum motionsensor_id {
- EC_MOTION_SENSOR_ACCEL_BASE = 0,
- EC_MOTION_SENSOR_ACCEL_LID = 1,
- EC_MOTION_SENSOR_GYRO = 2,
+ /*
+ * Spoof the readings of the sensors. The spoofed readings can be set
+ * to arbitrary values, or will lock to the last read actual values.
+ */
+ MOTIONSENSE_CMD_SPOOF = 16,
+
+ /* Set lid angle for tablet mode detection. */
+ MOTIONSENSE_CMD_TABLET_MODE_LID_ANGLE = 17,
/*
- * Note, if more sensors are added and this count changes, the padding
- * in ec_response_motion_sense dump command must be modified.
+ * Sensor Scale command is a setter/getter command for the calibration
+ * scale.
*/
- EC_MOTION_SENSOR_COUNT = 3
+ MOTIONSENSE_CMD_SENSOR_SCALE = 18,
+
+ /* Number of motionsense sub-commands. */
+ MOTIONSENSE_NUM_CMDS
};
/* List of motion sensor types. */
@@ -1584,6 +2340,7 @@ enum motionsensor_type {
MOTIONSENSE_TYPE_LIGHT = 4,
MOTIONSENSE_TYPE_ACTIVITY = 5,
MOTIONSENSE_TYPE_BARO = 6,
+ MOTIONSENSE_TYPE_SYNC = 7,
MOTIONSENSE_TYPE_MAX,
};
@@ -1591,19 +2348,116 @@ enum motionsensor_type {
enum motionsensor_location {
MOTIONSENSE_LOC_BASE = 0,
MOTIONSENSE_LOC_LID = 1,
+ MOTIONSENSE_LOC_CAMERA = 2,
MOTIONSENSE_LOC_MAX,
};
/* List of motion sensor chips. */
enum motionsensor_chip {
MOTIONSENSE_CHIP_KXCJ9 = 0,
+ MOTIONSENSE_CHIP_LSM6DS0 = 1,
+ MOTIONSENSE_CHIP_BMI160 = 2,
+ MOTIONSENSE_CHIP_SI1141 = 3,
+ MOTIONSENSE_CHIP_SI1142 = 4,
+ MOTIONSENSE_CHIP_SI1143 = 5,
+ MOTIONSENSE_CHIP_KX022 = 6,
+ MOTIONSENSE_CHIP_L3GD20H = 7,
+ MOTIONSENSE_CHIP_BMA255 = 8,
+ MOTIONSENSE_CHIP_BMP280 = 9,
+ MOTIONSENSE_CHIP_OPT3001 = 10,
+ MOTIONSENSE_CHIP_BH1730 = 11,
+ MOTIONSENSE_CHIP_GPIO = 12,
+ MOTIONSENSE_CHIP_LIS2DH = 13,
+ MOTIONSENSE_CHIP_LSM6DSM = 14,
+ MOTIONSENSE_CHIP_LIS2DE = 15,
+ MOTIONSENSE_CHIP_LIS2MDL = 16,
+ MOTIONSENSE_CHIP_LSM6DS3 = 17,
+ MOTIONSENSE_CHIP_LSM6DSO = 18,
+ MOTIONSENSE_CHIP_LNG2DM = 19,
+ MOTIONSENSE_CHIP_MAX,
+};
+
+/* List of orientation positions */
+enum motionsensor_orientation {
+ MOTIONSENSE_ORIENTATION_LANDSCAPE = 0,
+ MOTIONSENSE_ORIENTATION_PORTRAIT = 1,
+ MOTIONSENSE_ORIENTATION_UPSIDE_DOWN_PORTRAIT = 2,
+ MOTIONSENSE_ORIENTATION_UPSIDE_DOWN_LANDSCAPE = 3,
+ MOTIONSENSE_ORIENTATION_UNKNOWN = 4,
+};
+
+struct ec_response_motion_sensor_data {
+ /* Flags for each sensor. */
+ uint8_t flags;
+ /* Sensor number the data comes from. */
+ uint8_t sensor_num;
+ /* Each sensor is up to 3-axis. */
+ union {
+ int16_t data[3];
+ struct __ec_todo_packed {
+ uint16_t reserved;
+ uint32_t timestamp;
+ };
+ struct __ec_todo_unpacked {
+ uint8_t activity; /* motionsensor_activity */
+ uint8_t state;
+ int16_t add_info[2];
+ };
+ };
+} __ec_todo_packed;
+
+/* Note: used in ec_response_get_next_data */
+struct ec_response_motion_sense_fifo_info {
+ /* Size of the fifo */
+ uint16_t size;
+ /* Amount of space used in the fifo */
+ uint16_t count;
+ /* Timestamp recorded in us.
+ * aka accurate timestamp when host event was triggered.
+ */
+ uint32_t timestamp;
+ /* Total amount of vector lost */
+ uint16_t total_lost;
+ /* Lost events since the last fifo_info, per sensors */
+ uint16_t lost[0];
+} __ec_todo_packed;
+
+struct ec_response_motion_sense_fifo_data {
+ uint32_t number_data;
+ struct ec_response_motion_sensor_data data[0];
+} __ec_todo_packed;
+
+/* List supported activity recognition */
+enum motionsensor_activity {
+ MOTIONSENSE_ACTIVITY_RESERVED = 0,
+ MOTIONSENSE_ACTIVITY_SIG_MOTION = 1,
+ MOTIONSENSE_ACTIVITY_DOUBLE_TAP = 2,
+ MOTIONSENSE_ACTIVITY_ORIENTATION = 3,
};
+struct ec_motion_sense_activity {
+ uint8_t sensor_num;
+ uint8_t activity; /* one of enum motionsensor_activity */
+ uint8_t enable; /* 1: enable, 0: disable */
+ uint8_t reserved;
+ uint16_t parameters[3]; /* activity dependent parameters */
+} __ec_todo_unpacked;
+
/* Module flag masks used for the dump sub-command. */
-#define MOTIONSENSE_MODULE_FLAG_ACTIVE (1<<0)
+#define MOTIONSENSE_MODULE_FLAG_ACTIVE BIT(0)
/* Sensor flag masks used for the dump sub-command. */
-#define MOTIONSENSE_SENSOR_FLAG_PRESENT (1<<0)
+#define MOTIONSENSE_SENSOR_FLAG_PRESENT BIT(0)
+
+/*
+ * Flush entry for synchronization.
+ * data contains time stamp
+ */
+#define MOTIONSENSE_SENSOR_FLAG_FLUSH BIT(0)
+#define MOTIONSENSE_SENSOR_FLAG_TIMESTAMP BIT(1)
+#define MOTIONSENSE_SENSOR_FLAG_WAKEUP BIT(2)
+#define MOTIONSENSE_SENSOR_FLAG_TABLET_MODE BIT(3)
+#define MOTIONSENSE_SENSOR_FLAG_ODR BIT(4)
/*
* Send this value for the data element to only perform a read. If you
@@ -1614,48 +2468,79 @@ enum motionsensor_chip {
#define EC_MOTION_SENSE_INVALID_CALIB_TEMP 0x8000
+/* MOTIONSENSE_CMD_SENSOR_OFFSET subcommand flag */
/* Set Calibration information */
-#define MOTION_SENSE_SET_OFFSET 1
+#define MOTION_SENSE_SET_OFFSET BIT(0)
-struct ec_response_motion_sensor_data {
- /* Flags for each sensor. */
- uint8_t flags;
- /* Sensor number the data comes from */
- uint8_t sensor_num;
- /* Each sensor is up to 3-axis. */
- union {
- int16_t data[3];
- struct {
- uint16_t rsvd;
- uint32_t timestamp;
- } __packed;
- struct {
- uint8_t activity; /* motionsensor_activity */
- uint8_t state;
- int16_t add_info[2];
- };
- };
-} __packed;
+/* Default Scale value, factor 1. */
+#define MOTION_SENSE_DEFAULT_SCALE BIT(15)
+
+#define LID_ANGLE_UNRELIABLE 500
+
+enum motionsense_spoof_mode {
+ /* Disable spoof mode. */
+ MOTIONSENSE_SPOOF_MODE_DISABLE = 0,
+
+ /* Enable spoof mode, but use provided component values. */
+ MOTIONSENSE_SPOOF_MODE_CUSTOM,
+
+ /* Enable spoof mode, but use the current sensor values. */
+ MOTIONSENSE_SPOOF_MODE_LOCK_CURRENT,
+
+ /* Query the current spoof mode status for the sensor. */
+ MOTIONSENSE_SPOOF_MODE_QUERY,
+};
struct ec_params_motion_sense {
uint8_t cmd;
union {
/* Used for MOTIONSENSE_CMD_DUMP. */
- struct {
- /* no args */
+ struct __ec_todo_unpacked {
+ /*
+ * Maximal number of sensor the host is expecting.
+ * 0 means the host is only interested in the number
+ * of sensors controlled by the EC.
+ */
+ uint8_t max_sensor_count;
} dump;
/*
- * Used for MOTIONSENSE_CMD_EC_RATE and
- * MOTIONSENSE_CMD_KB_WAKE_ANGLE.
+ * Used for MOTIONSENSE_CMD_KB_WAKE_ANGLE.
*/
- struct {
- /* Data to set or EC_MOTION_SENSE_NO_VALUE to read. */
+ struct __ec_todo_unpacked {
+ /* Data to set or EC_MOTION_SENSE_NO_VALUE to read.
+ * kb_wake_angle: angle to wakup AP.
+ */
int16_t data;
- } ec_rate, kb_wake_angle;
+ } kb_wake_angle;
+
+ /*
+ * Used for MOTIONSENSE_CMD_INFO, MOTIONSENSE_CMD_DATA
+ * and MOTIONSENSE_CMD_PERFORM_CALIB.
+ */
+ struct __ec_todo_unpacked {
+ uint8_t sensor_num;
+ } info, info_3, data, fifo_flush, perform_calib,
+ list_activities;
+
+ /*
+ * Used for MOTIONSENSE_CMD_EC_RATE, MOTIONSENSE_CMD_SENSOR_ODR
+ * and MOTIONSENSE_CMD_SENSOR_RANGE.
+ */
+ struct __ec_todo_unpacked {
+ uint8_t sensor_num;
+
+ /* Rounding flag, true for round-up, false for down. */
+ uint8_t roundup;
+
+ uint16_t reserved;
+
+ /* Data to set or EC_MOTION_SENSE_NO_VALUE to read. */
+ int32_t data;
+ } ec_rate, sensor_odr, sensor_range;
/* Used for MOTIONSENSE_CMD_SENSOR_OFFSET */
- struct {
+ struct __ec_todo_packed {
uint8_t sensor_num;
/*
@@ -1681,36 +2566,102 @@ struct ec_params_motion_sense {
* Compass: 1/16 uT
*/
int16_t offset[3];
- } __packed sensor_offset;
+ } sensor_offset;
- /* Used for MOTIONSENSE_CMD_INFO. */
- struct {
+ /* Used for MOTIONSENSE_CMD_SENSOR_SCALE */
+ struct __ec_todo_packed {
uint8_t sensor_num;
- } info;
- /*
- * Used for MOTIONSENSE_CMD_SENSOR_ODR and
- * MOTIONSENSE_CMD_SENSOR_RANGE.
- */
- struct {
- /* Should be element of enum motionsensor_id. */
- uint8_t sensor_num;
+ /*
+ * bit 0: If set (MOTION_SENSE_SET_OFFSET), set
+ * the calibration information in the EC.
+ * If unset, just retrieve calibration information.
+ */
+ uint16_t flags;
- /* Rounding flag, true for round-up, false for down. */
- uint8_t roundup;
+ /*
+ * Temperature at calibration, in units of 0.01 C
+ * 0x8000: invalid / unknown.
+ * 0x0: 0C
+ * 0x7fff: +327.67C
+ */
+ int16_t temp;
- uint16_t reserved;
+ /*
+ * Scale for calibration:
+ * By default scale is 1, it is encoded on 16bits:
+ * 1 = BIT(15)
+ * ~2 = 0xFFFF
+ * ~0 = 0.
+ */
+ uint16_t scale[3];
+ } sensor_scale;
- /* Data to set or EC_MOTION_SENSE_NO_VALUE to read. */
- int32_t data;
- } sensor_odr, sensor_range;
+
+ /* Used for MOTIONSENSE_CMD_FIFO_INFO */
+ /* (no params) */
+
+ /* Used for MOTIONSENSE_CMD_FIFO_READ */
+ struct __ec_todo_unpacked {
+ /*
+ * Number of expected vector to return.
+ * EC may return less or 0 if none available.
+ */
+ uint32_t max_data_vector;
+ } fifo_read;
+
+ struct ec_motion_sense_activity set_activity;
+
+ /* Used for MOTIONSENSE_CMD_LID_ANGLE */
+ /* (no params) */
+
+ /* Used for MOTIONSENSE_CMD_FIFO_INT_ENABLE */
+ struct __ec_todo_unpacked {
+ /*
+ * 1: enable, 0 disable fifo,
+ * EC_MOTION_SENSE_NO_VALUE return value.
+ */
+ int8_t enable;
+ } fifo_int_enable;
+
+ /* Used for MOTIONSENSE_CMD_SPOOF */
+ struct __ec_todo_packed {
+ uint8_t sensor_id;
+
+ /* See enum motionsense_spoof_mode. */
+ uint8_t spoof_enable;
+
+ /* Ignored, used for alignment. */
+ uint8_t reserved;
+
+ /* Individual component values to spoof. */
+ int16_t components[3];
+ } spoof;
+
+ /* Used for MOTIONSENSE_CMD_TABLET_MODE_LID_ANGLE. */
+ struct __ec_todo_unpacked {
+ /*
+ * Lid angle threshold for switching between tablet and
+ * clamshell mode.
+ */
+ int16_t lid_angle;
+
+ /*
+ * Hysteresis degree to prevent fluctuations between
+ * clamshell and tablet mode if lid angle keeps
+ * changing around the threshold. Lid motion driver will
+ * use lid_angle + hys_degree to trigger tablet mode and
+ * lid_angle - hys_degree to trigger clamshell mode.
+ */
+ int16_t hys_degree;
+ } tablet_mode_threshold;
};
-} __packed;
+} __ec_todo_packed;
struct ec_response_motion_sense {
union {
- /* Used for MOTIONSENSE_CMD_DUMP. */
- struct {
+ /* Used for MOTIONSENSE_CMD_DUMP */
+ struct __ec_todo_unpacked {
/* Flags representing the motion sensor module. */
uint8_t module_flags;
@@ -1725,7 +2676,7 @@ struct ec_response_motion_sense {
} dump;
/* Used for MOTIONSENSE_CMD_INFO. */
- struct {
+ struct __ec_todo_unpacked {
/* Should be element of enum motionsensor_type. */
uint8_t type;
@@ -1736,74 +2687,166 @@ struct ec_response_motion_sense {
uint8_t chip;
} info;
+ /* Used for MOTIONSENSE_CMD_INFO version 3 */
+ struct __ec_todo_unpacked {
+ /* Should be element of enum motionsensor_type. */
+ uint8_t type;
+
+ /* Should be element of enum motionsensor_location. */
+ uint8_t location;
+
+ /* Should be element of enum motionsensor_chip. */
+ uint8_t chip;
+
+ /* Minimum sensor sampling frequency */
+ uint32_t min_frequency;
+
+ /* Maximum sensor sampling frequency */
+ uint32_t max_frequency;
+
+ /* Max number of sensor events that could be in fifo */
+ uint32_t fifo_max_event_count;
+ } info_3;
+
/* Used for MOTIONSENSE_CMD_DATA */
struct ec_response_motion_sensor_data data;
/*
* Used for MOTIONSENSE_CMD_EC_RATE, MOTIONSENSE_CMD_SENSOR_ODR,
- * MOTIONSENSE_CMD_SENSOR_RANGE, and
- * MOTIONSENSE_CMD_KB_WAKE_ANGLE.
+ * MOTIONSENSE_CMD_SENSOR_RANGE,
+ * MOTIONSENSE_CMD_KB_WAKE_ANGLE,
+ * MOTIONSENSE_CMD_FIFO_INT_ENABLE and
+ * MOTIONSENSE_CMD_SPOOF.
*/
- struct {
+ struct __ec_todo_unpacked {
/* Current value of the parameter queried. */
int32_t ret;
- } ec_rate, sensor_odr, sensor_range, kb_wake_angle;
+ } ec_rate, sensor_odr, sensor_range, kb_wake_angle,
+ fifo_int_enable, spoof;
- /* Used for MOTIONSENSE_CMD_SENSOR_OFFSET */
- struct {
+ /*
+ * Used for MOTIONSENSE_CMD_SENSOR_OFFSET,
+ * PERFORM_CALIB.
+ */
+ struct __ec_todo_unpacked {
int16_t temp;
int16_t offset[3];
} sensor_offset, perform_calib;
- };
-} __packed;
-/*****************************************************************************/
-/* USB charging control commands */
+ /* Used for MOTIONSENSE_CMD_SENSOR_SCALE */
+ struct __ec_todo_unpacked {
+ int16_t temp;
+ uint16_t scale[3];
+ } sensor_scale;
-/* Set USB port charging mode */
-#define EC_CMD_USB_CHARGE_SET_MODE 0x30
+ struct ec_response_motion_sense_fifo_info fifo_info, fifo_flush;
-struct ec_params_usb_charge_set_mode {
- uint8_t usb_port_id;
- uint8_t mode;
-} __packed;
+ struct ec_response_motion_sense_fifo_data fifo_read;
-/*****************************************************************************/
-/* Persistent storage for host */
+ struct __ec_todo_packed {
+ uint16_t reserved;
+ uint32_t enabled;
+ uint32_t disabled;
+ } list_activities;
-/* Maximum bytes that can be read/written in a single command */
-#define EC_PSTORE_SIZE_MAX 64
+ /* No params for set activity */
-/* Get persistent storage info */
-#define EC_CMD_PSTORE_INFO 0x40
+ /* Used for MOTIONSENSE_CMD_LID_ANGLE */
+ struct __ec_todo_unpacked {
+ /*
+ * Angle between 0 and 360 degree if available,
+ * LID_ANGLE_UNRELIABLE otherwise.
+ */
+ uint16_t value;
+ } lid_angle;
-struct ec_response_pstore_info {
- /* Persistent storage size, in bytes */
- uint32_t pstore_size;
- /* Access size; read/write offset and size must be a multiple of this */
- uint32_t access_size;
-} __packed;
+ /* Used for MOTIONSENSE_CMD_TABLET_MODE_LID_ANGLE. */
+ struct __ec_todo_unpacked {
+ /*
+ * Lid angle threshold for switching between tablet and
+ * clamshell mode.
+ */
+ uint16_t lid_angle;
+
+ /* Hysteresis degree. */
+ uint16_t hys_degree;
+ } tablet_mode_threshold;
+
+ };
+} __ec_todo_packed;
+
+/*****************************************************************************/
+/* Force lid open command */
+
+/* Make lid event always open */
+#define EC_CMD_FORCE_LID_OPEN 0x002C
+
+struct ec_params_force_lid_open {
+ uint8_t enabled;
+} __ec_align1;
+
+/*****************************************************************************/
+/* Configure the behavior of the power button */
+#define EC_CMD_CONFIG_POWER_BUTTON 0x002D
+
+enum ec_config_power_button_flags {
+ /* Enable/Disable power button pulses for x86 devices */
+ EC_POWER_BUTTON_ENABLE_PULSE = BIT(0),
+};
+
+struct ec_params_config_power_button {
+ /* See enum ec_config_power_button_flags */
+ uint8_t flags;
+} __ec_align1;
+
+/*****************************************************************************/
+/* USB charging control commands */
+
+/* Set USB port charging mode */
+#define EC_CMD_USB_CHARGE_SET_MODE 0x0030
+
+struct ec_params_usb_charge_set_mode {
+ uint8_t usb_port_id;
+ uint8_t mode:7;
+ uint8_t inhibit_charge:1;
+} __ec_align1;
+
+/*****************************************************************************/
+/* Persistent storage for host */
+
+/* Maximum bytes that can be read/written in a single command */
+#define EC_PSTORE_SIZE_MAX 64
+
+/* Get persistent storage info */
+#define EC_CMD_PSTORE_INFO 0x0040
+
+struct ec_response_pstore_info {
+ /* Persistent storage size, in bytes */
+ uint32_t pstore_size;
+ /* Access size; read/write offset and size must be a multiple of this */
+ uint32_t access_size;
+} __ec_align4;
/*
* Read persistent storage
*
* Response is params.size bytes of data.
*/
-#define EC_CMD_PSTORE_READ 0x41
+#define EC_CMD_PSTORE_READ 0x0041
struct ec_params_pstore_read {
uint32_t offset; /* Byte offset to read */
uint32_t size; /* Size to read in bytes */
-} __packed;
+} __ec_align4;
/* Write persistent storage */
-#define EC_CMD_PSTORE_WRITE 0x42
+#define EC_CMD_PSTORE_WRITE 0x0042
struct ec_params_pstore_write {
uint32_t offset; /* Byte offset to write */
uint32_t size; /* Size to write in bytes */
uint8_t data[EC_PSTORE_SIZE_MAX];
-} __packed;
+} __ec_align4;
/*****************************************************************************/
/* Real-time clock */
@@ -1811,21 +2854,21 @@ struct ec_params_pstore_write {
/* RTC params and response structures */
struct ec_params_rtc {
uint32_t time;
-} __packed;
+} __ec_align4;
struct ec_response_rtc {
uint32_t time;
-} __packed;
+} __ec_align4;
/* These use ec_response_rtc */
-#define EC_CMD_RTC_GET_VALUE 0x44
-#define EC_CMD_RTC_GET_ALARM 0x45
+#define EC_CMD_RTC_GET_VALUE 0x0044
+#define EC_CMD_RTC_GET_ALARM 0x0045
/* These all use ec_params_rtc */
-#define EC_CMD_RTC_SET_VALUE 0x46
-#define EC_CMD_RTC_SET_ALARM 0x47
+#define EC_CMD_RTC_SET_VALUE 0x0046
+#define EC_CMD_RTC_SET_ALARM 0x0047
-/* Pass as param to SET_ALARM to clear the current alarm */
+/* Pass as time param to SET_ALARM to clear the current alarm */
#define EC_RTC_ALARM_CLEAR 0
/*****************************************************************************/
@@ -1835,8 +2878,8 @@ struct ec_response_rtc {
#define EC_PORT80_SIZE_MAX 32
/* Get last port80 code from previous boot */
-#define EC_CMD_PORT80_LAST_BOOT 0x48
-#define EC_CMD_PORT80_READ 0x48
+#define EC_CMD_PORT80_LAST_BOOT 0x0048
+#define EC_CMD_PORT80_READ 0x0048
enum ec_port80_subcmd {
EC_PORT80_GET_INFO = 0,
@@ -1846,29 +2889,72 @@ enum ec_port80_subcmd {
struct ec_params_port80_read {
uint16_t subcmd;
union {
- struct {
+ struct __ec_todo_unpacked {
uint32_t offset;
uint32_t num_entries;
} read_buffer;
};
-} __packed;
+} __ec_todo_packed;
struct ec_response_port80_read {
union {
- struct {
+ struct __ec_todo_unpacked {
uint32_t writes;
uint32_t history_size;
uint32_t last_boot;
} get_info;
- struct {
+ struct __ec_todo_unpacked {
uint16_t codes[EC_PORT80_SIZE_MAX];
} data;
};
-} __packed;
+} __ec_todo_packed;
struct ec_response_port80_last_boot {
uint16_t code;
-} __packed;
+} __ec_align2;
+
+/*****************************************************************************/
+/* Temporary secure storage for host verified boot use */
+
+/* Number of bytes in a vstore slot */
+#define EC_VSTORE_SLOT_SIZE 64
+
+/* Maximum number of vstore slots */
+#define EC_VSTORE_SLOT_MAX 32
+
+/* Get persistent storage info */
+#define EC_CMD_VSTORE_INFO 0x0049
+struct ec_response_vstore_info {
+ /* Indicates which slots are locked */
+ uint32_t slot_locked;
+ /* Total number of slots available */
+ uint8_t slot_count;
+} __ec_align_size1;
+
+/*
+ * Read temporary secure storage
+ *
+ * Response is EC_VSTORE_SLOT_SIZE bytes of data.
+ */
+#define EC_CMD_VSTORE_READ 0x004A
+
+struct ec_params_vstore_read {
+ uint8_t slot; /* Slot to read from */
+} __ec_align1;
+
+struct ec_response_vstore_read {
+ uint8_t data[EC_VSTORE_SLOT_SIZE];
+} __ec_align1;
+
+/*
+ * Write temporary secure storage and lock it.
+ */
+#define EC_CMD_VSTORE_WRITE 0x004B
+
+struct ec_params_vstore_write {
+ uint8_t slot; /* Slot to write to */
+ uint8_t data[EC_VSTORE_SLOT_SIZE];
+} __ec_align1;
/*****************************************************************************/
/* Thermal engine commands. Note that there are two implementations. We'll
@@ -1877,8 +2963,8 @@ struct ec_response_port80_last_boot {
* Version 1 separates the CPU thermal limits from the fan control.
*/
-#define EC_CMD_THERMAL_SET_THRESHOLD 0x50
-#define EC_CMD_THERMAL_GET_THRESHOLD 0x51
+#define EC_CMD_THERMAL_SET_THRESHOLD 0x0050
+#define EC_CMD_THERMAL_GET_THRESHOLD 0x0051
/* The version 0 structs are opaque. You have to know what they are for
* the get/set commands to make any sense.
@@ -1889,17 +2975,17 @@ struct ec_params_thermal_set_threshold {
uint8_t sensor_type;
uint8_t threshold_id;
uint16_t value;
-} __packed;
+} __ec_align2;
/* Version 0 - get */
struct ec_params_thermal_get_threshold {
uint8_t sensor_type;
uint8_t threshold_id;
-} __packed;
+} __ec_align1;
struct ec_response_thermal_get_threshold {
uint16_t value;
-} __packed;
+} __ec_align2;
/* The version 1 structs are visible. */
@@ -1911,71 +2997,124 @@ enum ec_temp_thresholds {
EC_TEMP_THRESH_COUNT
};
-/* Thermal configuration for one temperature sensor. Temps are in degrees K.
+/*
+ * Thermal configuration for one temperature sensor. Temps are in degrees K.
* Zero values will be silently ignored by the thermal task.
+ *
+ * Set 'temp_host' value allows thermal task to trigger some event with 1 degree
+ * hysteresis.
+ * For example,
+ * temp_host[EC_TEMP_THRESH_HIGH] = 300 K
+ * temp_host_release[EC_TEMP_THRESH_HIGH] = 0 K
+ * EC will throttle ap when temperature >= 301 K, and release throttling when
+ * temperature <= 299 K.
+ *
+ * Set 'temp_host_release' value allows thermal task has a custom hysteresis.
+ * For example,
+ * temp_host[EC_TEMP_THRESH_HIGH] = 300 K
+ * temp_host_release[EC_TEMP_THRESH_HIGH] = 295 K
+ * EC will throttle ap when temperature >= 301 K, and release throttling when
+ * temperature <= 294 K.
+ *
+ * Note that this structure is a sub-structure of
+ * ec_params_thermal_set_threshold_v1, but maintains its alignment there.
*/
struct ec_thermal_config {
uint32_t temp_host[EC_TEMP_THRESH_COUNT]; /* levels of hotness */
+ uint32_t temp_host_release[EC_TEMP_THRESH_COUNT]; /* release levels */
uint32_t temp_fan_off; /* no active cooling needed */
uint32_t temp_fan_max; /* max active cooling needed */
-} __packed;
+} __ec_align4;
/* Version 1 - get config for one sensor. */
struct ec_params_thermal_get_threshold_v1 {
uint32_t sensor_num;
-} __packed;
+} __ec_align4;
/* This returns a struct ec_thermal_config */
-/* Version 1 - set config for one sensor.
- * Use read-modify-write for best results! */
+/*
+ * Version 1 - set config for one sensor.
+ * Use read-modify-write for best results!
+ */
struct ec_params_thermal_set_threshold_v1 {
uint32_t sensor_num;
struct ec_thermal_config cfg;
-} __packed;
+} __ec_align4;
/* This returns no data */
/****************************************************************************/
/* Toggle automatic fan control */
-#define EC_CMD_THERMAL_AUTO_FAN_CTRL 0x52
+#define EC_CMD_THERMAL_AUTO_FAN_CTRL 0x0052
+
+/* Version 1 of input params */
+struct ec_params_auto_fan_ctrl_v1 {
+ uint8_t fan_idx;
+} __ec_align1;
-/* Get TMP006 calibration data */
-#define EC_CMD_TMP006_GET_CALIBRATION 0x53
+/* Get/Set TMP006 calibration data */
+#define EC_CMD_TMP006_GET_CALIBRATION 0x0053
+#define EC_CMD_TMP006_SET_CALIBRATION 0x0054
+
+/*
+ * The original TMP006 calibration only needed four params, but now we need
+ * more. Since the algorithm is nothing but magic numbers anyway, we'll leave
+ * the params opaque. The v1 "get" response will include the algorithm number
+ * and how many params it requires. That way we can change the EC code without
+ * needing to update this file. We can also use a different algorithm on each
+ * sensor.
+ */
+/* This is the same struct for both v0 and v1. */
struct ec_params_tmp006_get_calibration {
uint8_t index;
-} __packed;
+} __ec_align1;
-struct ec_response_tmp006_get_calibration {
+/* Version 0 */
+struct ec_response_tmp006_get_calibration_v0 {
float s0;
float b0;
float b1;
float b2;
-} __packed;
-
-/* Set TMP006 calibration data */
-#define EC_CMD_TMP006_SET_CALIBRATION 0x54
+} __ec_align4;
-struct ec_params_tmp006_set_calibration {
+struct ec_params_tmp006_set_calibration_v0 {
uint8_t index;
- uint8_t reserved[3]; /* Reserved; set 0 */
+ uint8_t reserved[3];
float s0;
float b0;
float b1;
float b2;
-} __packed;
+} __ec_align4;
+
+/* Version 1 */
+struct ec_response_tmp006_get_calibration_v1 {
+ uint8_t algorithm;
+ uint8_t num_params;
+ uint8_t reserved[2];
+ float val[0];
+} __ec_align4;
+
+struct ec_params_tmp006_set_calibration_v1 {
+ uint8_t index;
+ uint8_t algorithm;
+ uint8_t num_params;
+ uint8_t reserved;
+ float val[0];
+} __ec_align4;
+
/* Read raw TMP006 data */
-#define EC_CMD_TMP006_GET_RAW 0x55
+#define EC_CMD_TMP006_GET_RAW 0x0055
struct ec_params_tmp006_get_raw {
uint8_t index;
-} __packed;
+} __ec_align1;
struct ec_response_tmp006_get_raw {
int32_t t; /* In 1/100 K */
int32_t v; /* In nV */
-};
+} __ec_align4;
/*****************************************************************************/
/* MKBP - Matrix KeyBoard Protocol */
@@ -1990,24 +3129,24 @@ struct ec_response_tmp006_get_raw {
* to obtain the instantaneous state, use EC_CMD_MKBP_INFO with the type
* EC_MKBP_INFO_CURRENT and event EC_MKBP_EVENT_KEY_MATRIX.
*/
-#define EC_CMD_MKBP_STATE 0x60
+#define EC_CMD_MKBP_STATE 0x0060
/*
* Provide information about various MKBP things. See enum ec_mkbp_info_type.
*/
-#define EC_CMD_MKBP_INFO 0x61
+#define EC_CMD_MKBP_INFO 0x0061
struct ec_response_mkbp_info {
uint32_t rows;
uint32_t cols;
/* Formerly "switches", which was 0. */
uint8_t reserved;
-} __packed;
+} __ec_align_size1;
struct ec_params_mkbp_info {
uint8_t info_type;
uint8_t event_type;
-} __packed;
+} __ec_align1;
enum ec_mkbp_info_type {
/*
@@ -2049,17 +3188,28 @@ enum ec_mkbp_info_type {
};
/* Simulate key press */
-#define EC_CMD_MKBP_SIMULATE_KEY 0x62
+#define EC_CMD_MKBP_SIMULATE_KEY 0x0062
struct ec_params_mkbp_simulate_key {
uint8_t col;
uint8_t row;
uint8_t pressed;
-} __packed;
+} __ec_align1;
+
+#define EC_CMD_GET_KEYBOARD_ID 0x0063
+
+struct ec_response_keyboard_id {
+ uint32_t keyboard_id;
+} __ec_align4;
+
+enum keyboard_id {
+ KEYBOARD_ID_UNSUPPORTED = 0,
+ KEYBOARD_ID_UNREADABLE = 0xffffffff,
+};
/* Configure keyboard scanning */
-#define EC_CMD_MKBP_SET_CONFIG 0x64
-#define EC_CMD_MKBP_GET_CONFIG 0x65
+#define EC_CMD_MKBP_SET_CONFIG 0x0064
+#define EC_CMD_MKBP_GET_CONFIG 0x0065
/* flags */
enum mkbp_config_flags {
@@ -2067,16 +3217,21 @@ enum mkbp_config_flags {
};
enum mkbp_config_valid {
- EC_MKBP_VALID_SCAN_PERIOD = 1 << 0,
- EC_MKBP_VALID_POLL_TIMEOUT = 1 << 1,
- EC_MKBP_VALID_MIN_POST_SCAN_DELAY = 1 << 3,
- EC_MKBP_VALID_OUTPUT_SETTLE = 1 << 4,
- EC_MKBP_VALID_DEBOUNCE_DOWN = 1 << 5,
- EC_MKBP_VALID_DEBOUNCE_UP = 1 << 6,
- EC_MKBP_VALID_FIFO_MAX_DEPTH = 1 << 7,
+ EC_MKBP_VALID_SCAN_PERIOD = BIT(0),
+ EC_MKBP_VALID_POLL_TIMEOUT = BIT(1),
+ EC_MKBP_VALID_MIN_POST_SCAN_DELAY = BIT(3),
+ EC_MKBP_VALID_OUTPUT_SETTLE = BIT(4),
+ EC_MKBP_VALID_DEBOUNCE_DOWN = BIT(5),
+ EC_MKBP_VALID_DEBOUNCE_UP = BIT(6),
+ EC_MKBP_VALID_FIFO_MAX_DEPTH = BIT(7),
};
-/* Configuration for our key scanning algorithm */
+/*
+ * Configuration for our key scanning algorithm.
+ *
+ * Note that this is used as a sub-structure of
+ * ec_{params/response}_mkbp_get_config.
+ */
struct ec_mkbp_config {
uint32_t valid_mask; /* valid fields */
uint8_t flags; /* some flags (enum mkbp_config_flags) */
@@ -2096,18 +3251,18 @@ struct ec_mkbp_config {
uint16_t debounce_up_us; /* time for debounce on key up */
/* maximum depth to allow for fifo (0 = no keyscan output) */
uint8_t fifo_max_depth;
-} __packed;
+} __ec_align_size1;
struct ec_params_mkbp_set_config {
struct ec_mkbp_config config;
-} __packed;
+} __ec_align_size1;
struct ec_response_mkbp_get_config {
struct ec_mkbp_config config;
-} __packed;
+} __ec_align_size1;
/* Run the key scan emulation */
-#define EC_CMD_KEYSCAN_SEQ_CTRL 0x66
+#define EC_CMD_KEYSCAN_SEQ_CTRL 0x0066
enum ec_keyscan_seq_cmd {
EC_KEYSCAN_SEQ_STATUS = 0, /* Get status information */
@@ -2122,23 +3277,23 @@ enum ec_collect_flags {
* Indicates this scan was processed by the EC. Due to timing, some
* scans may be skipped.
*/
- EC_KEYSCAN_SEQ_FLAG_DONE = 1 << 0,
+ EC_KEYSCAN_SEQ_FLAG_DONE = BIT(0),
};
struct ec_collect_item {
uint8_t flags; /* some flags (enum ec_collect_flags) */
-};
+} __ec_align1;
struct ec_params_keyscan_seq_ctrl {
uint8_t cmd; /* Command to send (enum ec_keyscan_seq_cmd) */
union {
- struct {
+ struct __ec_align1 {
uint8_t active; /* still active */
uint8_t num_items; /* number of items */
/* Current item being presented */
uint8_t cur_item;
} status;
- struct {
+ struct __ec_todo_unpacked {
/*
* Absolute time for this scan, measured from the
* start of the sequence.
@@ -2146,29 +3301,40 @@ struct ec_params_keyscan_seq_ctrl {
uint32_t time_us;
uint8_t scan[0]; /* keyscan data */
} add;
- struct {
+ struct __ec_align1 {
uint8_t start_item; /* First item to return */
uint8_t num_items; /* Number of items to return */
} collect;
};
-} __packed;
+} __ec_todo_packed;
struct ec_result_keyscan_seq_ctrl {
union {
- struct {
+ struct __ec_todo_unpacked {
uint8_t num_items; /* Number of items */
/* Data for each item */
struct ec_collect_item item[0];
} collect;
};
-} __packed;
+} __ec_todo_packed;
/*
- * Command for retrieving the next pending MKBP event from the EC device
+ * Get the next pending MKBP event.
*
- * The device replies with UNAVAILABLE if there aren't any pending events.
+ * Returns EC_RES_UNAVAILABLE if there is no event pending.
+ */
+#define EC_CMD_GET_NEXT_EVENT 0x0067
+
+#define EC_MKBP_HAS_MORE_EVENTS_SHIFT 7
+
+/*
+ * We use the most significant bit of the event type to indicate to the host
+ * that the EC has more MKBP events available to provide.
*/
-#define EC_CMD_GET_NEXT_EVENT 0x67
+#define EC_MKBP_HAS_MORE_EVENTS BIT(EC_MKBP_HAS_MORE_EVENTS_SHIFT)
+
+/* The mask to apply to get the raw event type */
+#define EC_MKBP_EVENT_TYPE_MASK (BIT(EC_MKBP_HAS_MORE_EVENTS_SHIFT) - 1)
enum ec_mkbp_event {
/* Keyboard matrix changed. The event data is the new matrix state. */
@@ -2186,9 +3352,21 @@ enum ec_mkbp_event {
/* The state of the switches have changed. */
EC_MKBP_EVENT_SWITCH = 4,
- /* EC sent a sysrq command */
+ /* New Fingerprint sensor event, the event data is fp_events bitmap. */
+ EC_MKBP_EVENT_FINGERPRINT = 5,
+
+ /*
+ * Sysrq event: send emulated sysrq. The event data is sysrq,
+ * corresponding to the key to be pressed.
+ */
EC_MKBP_EVENT_SYSRQ = 6,
+ /*
+ * New 64-bit host event.
+ * The event data is 8 bytes of host event flags.
+ */
+ EC_MKBP_EVENT_HOST_EVENT64 = 7,
+
/* Notify the AP that something happened on CEC */
EC_MKBP_EVENT_CEC_EVENT = 8,
@@ -2198,65 +3376,140 @@ enum ec_mkbp_event {
/* Number of MKBP events */
EC_MKBP_EVENT_COUNT,
};
+BUILD_ASSERT(EC_MKBP_EVENT_COUNT <= EC_MKBP_EVENT_TYPE_MASK);
-union ec_response_get_next_data {
- uint8_t key_matrix[13];
+union __ec_align_offset1 ec_response_get_next_data {
+ uint8_t key_matrix[13];
/* Unaligned */
- uint32_t host_event;
+ uint32_t host_event;
+ uint64_t host_event64;
- uint32_t buttons;
- uint32_t switches;
- uint32_t sysrq;
-} __packed;
+ struct __ec_todo_unpacked {
+ /* For aligning the fifo_info */
+ uint8_t reserved[3];
+ struct ec_response_motion_sense_fifo_info info;
+ } sensor_fifo;
-union ec_response_get_next_data_v1 {
+ uint32_t buttons;
+
+ uint32_t switches;
+
+ uint32_t fp_events;
+
+ uint32_t sysrq;
+
+ /* CEC events from enum mkbp_cec_event */
+ uint32_t cec_events;
+};
+
+union __ec_align_offset1 ec_response_get_next_data_v1 {
uint8_t key_matrix[16];
+
+ /* Unaligned */
uint32_t host_event;
+ uint64_t host_event64;
+
+ struct __ec_todo_unpacked {
+ /* For aligning the fifo_info */
+ uint8_t reserved[3];
+ struct ec_response_motion_sense_fifo_info info;
+ } sensor_fifo;
+
uint32_t buttons;
+
uint32_t switches;
+
+ uint32_t fp_events;
+
uint32_t sysrq;
+
+ /* CEC events from enum mkbp_cec_event */
uint32_t cec_events;
+
uint8_t cec_message[16];
-} __packed;
+};
+BUILD_ASSERT(sizeof(union ec_response_get_next_data_v1) == 16);
struct ec_response_get_next_event {
uint8_t event_type;
/* Followed by event data if any */
union ec_response_get_next_data data;
-} __packed;
+} __ec_align1;
struct ec_response_get_next_event_v1 {
uint8_t event_type;
/* Followed by event data if any */
union ec_response_get_next_data_v1 data;
-} __packed;
+} __ec_align1;
/* Bit indices for buttons and switches.*/
/* Buttons */
#define EC_MKBP_POWER_BUTTON 0
#define EC_MKBP_VOL_UP 1
#define EC_MKBP_VOL_DOWN 2
+#define EC_MKBP_RECOVERY 3
/* Switches */
#define EC_MKBP_LID_OPEN 0
#define EC_MKBP_TABLET_MODE 1
#define EC_MKBP_BASE_ATTACHED 2
+/* Run keyboard factory test scanning */
+#define EC_CMD_KEYBOARD_FACTORY_TEST 0x0068
+
+struct ec_response_keyboard_factory_test {
+ uint16_t shorted; /* Keyboard pins are shorted */
+} __ec_align2;
+
+/* Fingerprint events in 'fp_events' for EC_MKBP_EVENT_FINGERPRINT */
+#define EC_MKBP_FP_RAW_EVENT(fp_events) ((fp_events) & 0x00FFFFFF)
+#define EC_MKBP_FP_ERRCODE(fp_events) ((fp_events) & 0x0000000F)
+#define EC_MKBP_FP_ENROLL_PROGRESS_OFFSET 4
+#define EC_MKBP_FP_ENROLL_PROGRESS(fpe) (((fpe) & 0x00000FF0) \
+ >> EC_MKBP_FP_ENROLL_PROGRESS_OFFSET)
+#define EC_MKBP_FP_MATCH_IDX_OFFSET 12
+#define EC_MKBP_FP_MATCH_IDX_MASK 0x0000F000
+#define EC_MKBP_FP_MATCH_IDX(fpe) (((fpe) & EC_MKBP_FP_MATCH_IDX_MASK) \
+ >> EC_MKBP_FP_MATCH_IDX_OFFSET)
+#define EC_MKBP_FP_ENROLL BIT(27)
+#define EC_MKBP_FP_MATCH BIT(28)
+#define EC_MKBP_FP_FINGER_DOWN BIT(29)
+#define EC_MKBP_FP_FINGER_UP BIT(30)
+#define EC_MKBP_FP_IMAGE_READY BIT(31)
+/* code given by EC_MKBP_FP_ERRCODE() when EC_MKBP_FP_ENROLL is set */
+#define EC_MKBP_FP_ERR_ENROLL_OK 0
+#define EC_MKBP_FP_ERR_ENROLL_LOW_QUALITY 1
+#define EC_MKBP_FP_ERR_ENROLL_IMMOBILE 2
+#define EC_MKBP_FP_ERR_ENROLL_LOW_COVERAGE 3
+#define EC_MKBP_FP_ERR_ENROLL_INTERNAL 5
+/* Can be used to detect if image was usable for enrollment or not. */
+#define EC_MKBP_FP_ERR_ENROLL_PROBLEM_MASK 1
+/* code given by EC_MKBP_FP_ERRCODE() when EC_MKBP_FP_MATCH is set */
+#define EC_MKBP_FP_ERR_MATCH_NO 0
+#define EC_MKBP_FP_ERR_MATCH_NO_INTERNAL 6
+#define EC_MKBP_FP_ERR_MATCH_NO_TEMPLATES 7
+#define EC_MKBP_FP_ERR_MATCH_NO_LOW_QUALITY 2
+#define EC_MKBP_FP_ERR_MATCH_NO_LOW_COVERAGE 4
+#define EC_MKBP_FP_ERR_MATCH_YES 1
+#define EC_MKBP_FP_ERR_MATCH_YES_UPDATED 3
+#define EC_MKBP_FP_ERR_MATCH_YES_UPDATE_FAILED 5
+
+
/*****************************************************************************/
/* Temperature sensor commands */
/* Read temperature sensor info */
-#define EC_CMD_TEMP_SENSOR_GET_INFO 0x70
+#define EC_CMD_TEMP_SENSOR_GET_INFO 0x0070
struct ec_params_temp_sensor_get_info {
uint8_t id;
-} __packed;
+} __ec_align1;
struct ec_response_temp_sensor_get_info {
char sensor_name[32];
uint8_t sensor_type;
-} __packed;
+} __ec_align1;
/*****************************************************************************/
@@ -2269,49 +3522,131 @@ struct ec_response_temp_sensor_get_info {
/*****************************************************************************/
/* Host event commands */
+
+/* Obsolete. New implementation should use EC_CMD_HOST_EVENT instead */
/*
* Host event mask params and response structures, shared by all of the host
* event commands below.
*/
struct ec_params_host_event_mask {
uint32_t mask;
-} __packed;
+} __ec_align4;
struct ec_response_host_event_mask {
uint32_t mask;
-} __packed;
+} __ec_align4;
/* These all use ec_response_host_event_mask */
-#define EC_CMD_HOST_EVENT_GET_B 0x87
-#define EC_CMD_HOST_EVENT_GET_SMI_MASK 0x88
-#define EC_CMD_HOST_EVENT_GET_SCI_MASK 0x89
-#define EC_CMD_HOST_EVENT_GET_WAKE_MASK 0x8d
+#define EC_CMD_HOST_EVENT_GET_B 0x0087
+#define EC_CMD_HOST_EVENT_GET_SMI_MASK 0x0088
+#define EC_CMD_HOST_EVENT_GET_SCI_MASK 0x0089
+#define EC_CMD_HOST_EVENT_GET_WAKE_MASK 0x008D
/* These all use ec_params_host_event_mask */
-#define EC_CMD_HOST_EVENT_SET_SMI_MASK 0x8a
-#define EC_CMD_HOST_EVENT_SET_SCI_MASK 0x8b
-#define EC_CMD_HOST_EVENT_CLEAR 0x8c
-#define EC_CMD_HOST_EVENT_SET_WAKE_MASK 0x8e
-#define EC_CMD_HOST_EVENT_CLEAR_B 0x8f
+#define EC_CMD_HOST_EVENT_SET_SMI_MASK 0x008A
+#define EC_CMD_HOST_EVENT_SET_SCI_MASK 0x008B
+#define EC_CMD_HOST_EVENT_CLEAR 0x008C
+#define EC_CMD_HOST_EVENT_SET_WAKE_MASK 0x008E
+#define EC_CMD_HOST_EVENT_CLEAR_B 0x008F
+
+/*
+ * Unified host event programming interface - Should be used by newer versions
+ * of BIOS/OS to program host events and masks
+ */
+
+struct ec_params_host_event {
+
+ /* Action requested by host - one of enum ec_host_event_action. */
+ uint8_t action;
+
+ /*
+ * Mask type that the host requested the action on - one of
+ * enum ec_host_event_mask_type.
+ */
+ uint8_t mask_type;
+
+ /* Set to 0, ignore on read */
+ uint16_t reserved;
+
+ /* Value to be used in case of set operations. */
+ uint64_t value;
+} __ec_align4;
+
+/*
+ * Response structure returned by EC_CMD_HOST_EVENT.
+ * Update the value on a GET request. Set to 0 on GET/CLEAR
+ */
+
+struct ec_response_host_event {
+
+ /* Mask value in case of get operation */
+ uint64_t value;
+} __ec_align4;
+
+enum ec_host_event_action {
+ /*
+ * params.value is ignored. Value of mask_type populated
+ * in response.value
+ */
+ EC_HOST_EVENT_GET,
+
+ /* Bits in params.value are set */
+ EC_HOST_EVENT_SET,
+
+ /* Bits in params.value are cleared */
+ EC_HOST_EVENT_CLEAR,
+};
+
+enum ec_host_event_mask_type {
+
+ /* Main host event copy */
+ EC_HOST_EVENT_MAIN,
+
+ /* Copy B of host events */
+ EC_HOST_EVENT_B,
+
+ /* SCI Mask */
+ EC_HOST_EVENT_SCI_MASK,
+
+ /* SMI Mask */
+ EC_HOST_EVENT_SMI_MASK,
+
+ /* Mask of events that should be always reported in hostevents */
+ EC_HOST_EVENT_ALWAYS_REPORT_MASK,
+
+ /* Active wake mask */
+ EC_HOST_EVENT_ACTIVE_WAKE_MASK,
+
+ /* Lazy wake mask for S0ix */
+ EC_HOST_EVENT_LAZY_WAKE_MASK_S0IX,
+
+ /* Lazy wake mask for S3 */
+ EC_HOST_EVENT_LAZY_WAKE_MASK_S3,
+
+ /* Lazy wake mask for S5 */
+ EC_HOST_EVENT_LAZY_WAKE_MASK_S5,
+};
+
+#define EC_CMD_HOST_EVENT 0x00A4
/*****************************************************************************/
/* Switch commands */
/* Enable/disable LCD backlight */
-#define EC_CMD_SWITCH_ENABLE_BKLIGHT 0x90
+#define EC_CMD_SWITCH_ENABLE_BKLIGHT 0x0090
struct ec_params_switch_enable_backlight {
uint8_t enabled;
-} __packed;
+} __ec_align1;
/* Enable/disable WLAN/Bluetooth */
-#define EC_CMD_SWITCH_ENABLE_WIRELESS 0x91
+#define EC_CMD_SWITCH_ENABLE_WIRELESS 0x0091
#define EC_VER_SWITCH_ENABLE_WIRELESS 1
/* Version 0 params; no response */
struct ec_params_switch_enable_wireless_v0 {
uint8_t enabled;
-} __packed;
+} __ec_align1;
/* Version 1 params */
struct ec_params_switch_enable_wireless_v1 {
@@ -2330,7 +3665,7 @@ struct ec_params_switch_enable_wireless_v1 {
/* Which flags to copy from suspend_flags */
uint8_t suspend_mask;
-} __packed;
+} __ec_align1;
/* Version 1 response */
struct ec_response_switch_enable_wireless_v1 {
@@ -2339,55 +3674,56 @@ struct ec_response_switch_enable_wireless_v1 {
/* Flags to leave enabled in S3 */
uint8_t suspend_flags;
-} __packed;
+} __ec_align1;
/*****************************************************************************/
/* GPIO commands. Only available on EC if write protect has been disabled. */
/* Set GPIO output value */
-#define EC_CMD_GPIO_SET 0x92
+#define EC_CMD_GPIO_SET 0x0092
struct ec_params_gpio_set {
char name[32];
uint8_t val;
-} __packed;
+} __ec_align1;
/* Get GPIO value */
-#define EC_CMD_GPIO_GET 0x93
+#define EC_CMD_GPIO_GET 0x0093
/* Version 0 of input params and response */
struct ec_params_gpio_get {
char name[32];
-} __packed;
+} __ec_align1;
+
struct ec_response_gpio_get {
uint8_t val;
-} __packed;
+} __ec_align1;
/* Version 1 of input params and response */
struct ec_params_gpio_get_v1 {
uint8_t subcmd;
union {
- struct {
+ struct __ec_align1 {
char name[32];
} get_value_by_name;
- struct {
+ struct __ec_align1 {
uint8_t index;
} get_info;
};
-} __packed;
+} __ec_align1;
struct ec_response_gpio_get_v1 {
union {
- struct {
+ struct __ec_align1 {
uint8_t val;
} get_value_by_name, get_count;
- struct {
+ struct __ec_todo_unpacked {
uint8_t val;
char name[32];
uint32_t flags;
} get_info;
};
-} __packed;
+} __ec_todo_packed;
enum gpio_get_subcmd {
EC_GPIO_GET_BY_NAME = 0,
@@ -2399,25 +3735,28 @@ enum gpio_get_subcmd {
/* I2C commands. Only available when flash write protect is unlocked. */
/*
- * TODO(crosbug.com/p/23570): These commands are deprecated, and will be
- * removed soon. Use EC_CMD_I2C_XFER instead.
+ * CAUTION: These commands are deprecated, and are not supported anymore in EC
+ * builds >= 8398.0.0 (see crosbug.com/p/23570).
+ *
+ * Use EC_CMD_I2C_PASSTHRU instead.
*/
/* Read I2C bus */
-#define EC_CMD_I2C_READ 0x94
+#define EC_CMD_I2C_READ 0x0094
struct ec_params_i2c_read {
uint16_t addr; /* 8-bit address (7-bit shifted << 1) */
uint8_t read_size; /* Either 8 or 16. */
uint8_t port;
uint8_t offset;
-} __packed;
+} __ec_align_size1;
+
struct ec_response_i2c_read {
uint16_t data;
-} __packed;
+} __ec_align2;
/* Write I2C bus */
-#define EC_CMD_I2C_WRITE 0x95
+#define EC_CMD_I2C_WRITE 0x0095
struct ec_params_i2c_write {
uint16_t data;
@@ -2425,7 +3764,7 @@ struct ec_params_i2c_write {
uint8_t write_size; /* Either 8 or 16. */
uint8_t port;
uint8_t offset;
-} __packed;
+} __ec_align_size1;
/*****************************************************************************/
/* Charge state commands. Only available when flash write protect unlocked. */
@@ -2433,7 +3772,7 @@ struct ec_params_i2c_write {
/* Force charge state machine to stop charging the battery or force it to
* discharge the battery.
*/
-#define EC_CMD_CHARGE_CONTROL 0x96
+#define EC_CMD_CHARGE_CONTROL 0x0096
#define EC_VER_CHARGE_CONTROL 1
enum ec_charge_control_mode {
@@ -2444,13 +3783,12 @@ enum ec_charge_control_mode {
struct ec_params_charge_control {
uint32_t mode; /* enum charge_control_mode */
-} __packed;
+} __ec_align4;
/*****************************************************************************/
-/* Console commands. Only available when flash write protect is unlocked. */
/* Snapshot console output buffer for use by EC_CMD_CONSOLE_READ. */
-#define EC_CMD_CONSOLE_SNAPSHOT 0x97
+#define EC_CMD_CONSOLE_SNAPSHOT 0x0097
/*
* Read data from the saved snapshot. If the subcmd parameter is
@@ -2464,7 +3802,7 @@ struct ec_params_charge_control {
* Response is null-terminated string. Empty string, if there is no more
* remaining output.
*/
-#define EC_CMD_CONSOLE_READ 0x98
+#define EC_CMD_CONSOLE_READ 0x0098
enum ec_console_read_subcmd {
CONSOLE_READ_NEXT = 0,
@@ -2473,7 +3811,7 @@ enum ec_console_read_subcmd {
struct ec_params_console_read_v1 {
uint8_t subcmd; /* enum ec_console_read_subcmd */
-} __packed;
+} __ec_align1;
/*****************************************************************************/
@@ -2484,14 +3822,13 @@ struct ec_params_console_read_v1 {
* EC_RES_SUCCESS if the command was successful.
* EC_RES_ERROR if the cut off command failed.
*/
+#define EC_CMD_BATTERY_CUT_OFF 0x0099
-#define EC_CMD_BATTERY_CUT_OFF 0x99
-
-#define EC_BATTERY_CUTOFF_FLAG_AT_SHUTDOWN (1 << 0)
+#define EC_BATTERY_CUTOFF_FLAG_AT_SHUTDOWN BIT(0)
struct ec_params_battery_cutoff {
uint8_t flags;
-} __packed;
+} __ec_align1;
/*****************************************************************************/
/* USB port mux control. */
@@ -2499,11 +3836,11 @@ struct ec_params_battery_cutoff {
/*
* Switch USB mux or return to automatic switching.
*/
-#define EC_CMD_USB_MUX 0x9a
+#define EC_CMD_USB_MUX 0x009A
struct ec_params_usb_mux {
uint8_t mux;
-} __packed;
+} __ec_align1;
/*****************************************************************************/
/* LDOs / FETs control. */
@@ -2516,25 +3853,25 @@ enum ec_ldo_state {
/*
* Switch on/off a LDO.
*/
-#define EC_CMD_LDO_SET 0x9b
+#define EC_CMD_LDO_SET 0x009B
struct ec_params_ldo_set {
uint8_t index;
uint8_t state;
-} __packed;
+} __ec_align1;
/*
* Get LDO state.
*/
-#define EC_CMD_LDO_GET 0x9c
+#define EC_CMD_LDO_GET 0x009C
struct ec_params_ldo_get {
uint8_t index;
-} __packed;
+} __ec_align1;
struct ec_response_ldo_get {
uint8_t state;
-} __packed;
+} __ec_align1;
/*****************************************************************************/
/* Power info. */
@@ -2542,7 +3879,7 @@ struct ec_response_ldo_get {
/*
* Get power info.
*/
-#define EC_CMD_POWER_INFO 0x9d
+#define EC_CMD_POWER_INFO 0x009D
struct ec_response_power_info {
uint32_t usb_dev_type;
@@ -2550,21 +3887,21 @@ struct ec_response_power_info {
uint16_t voltage_system;
uint16_t current_system;
uint16_t usb_current_limit;
-} __packed;
+} __ec_align4;
/*****************************************************************************/
/* I2C passthru command */
-#define EC_CMD_I2C_PASSTHRU 0x9e
+#define EC_CMD_I2C_PASSTHRU 0x009E
/* Read data; if not present, message is a write */
-#define EC_I2C_FLAG_READ (1 << 15)
+#define EC_I2C_FLAG_READ BIT(15)
/* Mask for address */
#define EC_I2C_ADDR_MASK 0x3ff
-#define EC_I2C_STATUS_NAK (1 << 0) /* Transfer was not acknowledged */
-#define EC_I2C_STATUS_TIMEOUT (1 << 1) /* Timeout during transfer */
+#define EC_I2C_STATUS_NAK BIT(0) /* Transfer was not acknowledged */
+#define EC_I2C_STATUS_TIMEOUT BIT(1) /* Timeout during transfer */
/* Any error */
#define EC_I2C_STATUS_ERROR (EC_I2C_STATUS_NAK | EC_I2C_STATUS_TIMEOUT)
@@ -2572,49 +3909,49 @@ struct ec_response_power_info {
struct ec_params_i2c_passthru_msg {
uint16_t addr_flags; /* I2C slave address (7 or 10 bits) and flags */
uint16_t len; /* Number of bytes to read or write */
-} __packed;
+} __ec_align2;
struct ec_params_i2c_passthru {
uint8_t port; /* I2C port number */
uint8_t num_msgs; /* Number of messages */
struct ec_params_i2c_passthru_msg msg[];
/* Data to write for all messages is concatenated here */
-} __packed;
+} __ec_align2;
struct ec_response_i2c_passthru {
uint8_t i2c_status; /* Status flags (EC_I2C_STATUS_...) */
uint8_t num_msgs; /* Number of messages processed */
uint8_t data[]; /* Data read by messages concatenated here */
-} __packed;
+} __ec_align1;
/*****************************************************************************/
/* Power button hang detect */
-#define EC_CMD_HANG_DETECT 0x9f
+#define EC_CMD_HANG_DETECT 0x009F
/* Reasons to start hang detection timer */
/* Power button pressed */
-#define EC_HANG_START_ON_POWER_PRESS (1 << 0)
+#define EC_HANG_START_ON_POWER_PRESS BIT(0)
/* Lid closed */
-#define EC_HANG_START_ON_LID_CLOSE (1 << 1)
+#define EC_HANG_START_ON_LID_CLOSE BIT(1)
/* Lid opened */
-#define EC_HANG_START_ON_LID_OPEN (1 << 2)
+#define EC_HANG_START_ON_LID_OPEN BIT(2)
/* Start of AP S3->S0 transition (booting or resuming from suspend) */
-#define EC_HANG_START_ON_RESUME (1 << 3)
+#define EC_HANG_START_ON_RESUME BIT(3)
/* Reasons to cancel hang detection */
/* Power button released */
-#define EC_HANG_STOP_ON_POWER_RELEASE (1 << 8)
+#define EC_HANG_STOP_ON_POWER_RELEASE BIT(8)
/* Any host command from AP received */
-#define EC_HANG_STOP_ON_HOST_COMMAND (1 << 9)
+#define EC_HANG_STOP_ON_HOST_COMMAND BIT(9)
/* Stop on end of AP S0->S3 transition (suspending or shutting down) */
-#define EC_HANG_STOP_ON_SUSPEND (1 << 10)
+#define EC_HANG_STOP_ON_SUSPEND BIT(10)
/*
* If this flag is set, all the other fields are ignored, and the hang detect
@@ -2622,14 +3959,14 @@ struct ec_response_i2c_passthru {
* without reconfiguring any of the other hang detect settings. Note that
* you must previously have configured the timeouts.
*/
-#define EC_HANG_START_NOW (1 << 30)
+#define EC_HANG_START_NOW BIT(30)
/*
* If this flag is set, all the other fields are ignored (including
* EC_HANG_START_NOW). This provides the AP a way to stop the hang timer
* without reconfiguring any of the other hang detect settings.
*/
-#define EC_HANG_STOP_NOW (1 << 31)
+#define EC_HANG_STOP_NOW BIT(31)
struct ec_params_hang_detect {
/* Flags; see EC_HANG_* */
@@ -2640,7 +3977,7 @@ struct ec_params_hang_detect {
/* Timeout in msec before generating warm reboot, if enabled */
uint16_t warm_reboot_timeout_msec;
-} __packed;
+} __ec_align4;
/*****************************************************************************/
/* Commands for battery charging */
@@ -2649,7 +3986,7 @@ struct ec_params_hang_detect {
* This is the single catch-all host command to exchange data regarding the
* charge state machine (v2 and up).
*/
-#define EC_CMD_CHARGE_STATE 0xa0
+#define EC_CMD_CHARGE_STATE 0x00A0
/* Subcommands for this host command */
enum charge_state_command {
@@ -2669,6 +4006,11 @@ enum charge_state_params {
CS_PARAM_CHG_INPUT_CURRENT, /* charger input current limit */
CS_PARAM_CHG_STATUS, /* charger-specific status */
CS_PARAM_CHG_OPTION, /* charger-specific options */
+ CS_PARAM_LIMIT_POWER, /*
+ * Check if power is limited due to
+ * low battery and / or a weak external
+ * charger. READ ONLY.
+ */
/* How many so far? */
CS_NUM_BASE_PARAMS,
@@ -2676,30 +4018,39 @@ enum charge_state_params {
CS_PARAM_CUSTOM_PROFILE_MIN = 0x10000,
CS_PARAM_CUSTOM_PROFILE_MAX = 0x1ffff,
+ /* Range for CONFIG_CHARGE_STATE_DEBUG params */
+ CS_PARAM_DEBUG_MIN = 0x20000,
+ CS_PARAM_DEBUG_CTL_MODE = 0x20000,
+ CS_PARAM_DEBUG_MANUAL_MODE,
+ CS_PARAM_DEBUG_SEEMS_DEAD,
+ CS_PARAM_DEBUG_SEEMS_DISCONNECTED,
+ CS_PARAM_DEBUG_BATT_REMOVED,
+ CS_PARAM_DEBUG_MANUAL_CURRENT,
+ CS_PARAM_DEBUG_MANUAL_VOLTAGE,
+ CS_PARAM_DEBUG_MAX = 0x2ffff,
+
/* Other custom param ranges go here... */
};
struct ec_params_charge_state {
uint8_t cmd; /* enum charge_state_command */
union {
- struct {
- /* no args */
- } get_state;
+ /* get_state has no args */
- struct {
+ struct __ec_todo_unpacked {
uint32_t param; /* enum charge_state_param */
} get_param;
- struct {
+ struct __ec_todo_unpacked {
uint32_t param; /* param to set */
uint32_t value; /* value to set */
} set_param;
};
-} __packed;
+} __ec_todo_packed;
struct ec_response_charge_state {
union {
- struct {
+ struct __ec_align4 {
int ac;
int chg_voltage;
int chg_current;
@@ -2707,24 +4058,23 @@ struct ec_response_charge_state {
int batt_state_of_charge;
} get_state;
- struct {
+ struct __ec_align4 {
uint32_t value;
} get_param;
- struct {
- /* no return values */
- } set_param;
+
+ /* set_param returns no args */
};
-} __packed;
+} __ec_align4;
/*
* Set maximum battery charging current.
*/
-#define EC_CMD_CHARGE_CURRENT_LIMIT 0xa1
+#define EC_CMD_CHARGE_CURRENT_LIMIT 0x00A1
struct ec_params_current_limit {
uint32_t limit; /* in mA */
-} __packed;
+} __ec_align4;
/*
* Set maximum external voltage / current.
@@ -2735,23 +4085,69 @@ struct ec_params_current_limit {
struct ec_params_external_power_limit_v1 {
uint16_t current_lim; /* in mA, or EC_POWER_LIMIT_NONE to clear limit */
uint16_t voltage_lim; /* in mV, or EC_POWER_LIMIT_NONE to clear limit */
-} __packed;
+} __ec_align2;
#define EC_POWER_LIMIT_NONE 0xffff
+/*
+ * Set maximum voltage & current of a dedicated charge port
+ */
+#define EC_CMD_OVERRIDE_DEDICATED_CHARGER_LIMIT 0x00A3
+
+struct ec_params_dedicated_charger_limit {
+ uint16_t current_lim; /* in mA */
+ uint16_t voltage_lim; /* in mV */
+} __ec_align2;
+
+/*****************************************************************************/
+/* Hibernate/Deep Sleep Commands */
+
+/* Set the delay before going into hibernation. */
+#define EC_CMD_HIBERNATION_DELAY 0x00A8
+
+struct ec_params_hibernation_delay {
+ /*
+ * Seconds to wait in G3 before hibernate. Pass in 0 to read the
+ * current settings without changing them.
+ */
+ uint32_t seconds;
+} __ec_align4;
+
+struct ec_response_hibernation_delay {
+ /*
+ * The current time in seconds in which the system has been in the G3
+ * state. This value is reset if the EC transitions out of G3.
+ */
+ uint32_t time_g3;
+
+ /*
+ * The current time remaining in seconds until the EC should hibernate.
+ * This value is also reset if the EC transitions out of G3.
+ */
+ uint32_t time_remaining;
+
+ /*
+ * The current time in seconds that the EC should wait in G3 before
+ * hibernating.
+ */
+ uint32_t hibernate_delay;
+} __ec_align4;
+
/* Inform the EC when entering a sleep state */
-#define EC_CMD_HOST_SLEEP_EVENT 0xa9
+#define EC_CMD_HOST_SLEEP_EVENT 0x00A9
enum host_sleep_event {
HOST_SLEEP_EVENT_S3_SUSPEND = 1,
HOST_SLEEP_EVENT_S3_RESUME = 2,
HOST_SLEEP_EVENT_S0IX_SUSPEND = 3,
- HOST_SLEEP_EVENT_S0IX_RESUME = 4
+ HOST_SLEEP_EVENT_S0IX_RESUME = 4,
+ /* S3 suspend with additional enabled wake sources */
+ HOST_SLEEP_EVENT_S3_WAKEABLE_SUSPEND = 5,
};
struct ec_params_host_sleep_event {
uint8_t sleep_event;
-} __packed;
+} __ec_align1;
/*
* Use a default timeout value (CONFIG_SLEEP_TIMEOUT_MS) for detecting sleep
@@ -2782,7 +4178,7 @@ struct ec_params_host_sleep_event_v1 {
/* No parameters for non-suspend messages. */
};
-} __packed;
+} __ec_align2;
/* A timeout occurred when this bit is set */
#define EC_HOST_RESUME_SLEEP_TIMEOUT 0x80000000
@@ -2808,42 +4204,72 @@ struct ec_response_host_sleep_event_v1 {
/* No response fields for non-resume messages. */
};
-} __packed;
+} __ec_align4;
+
+/*****************************************************************************/
+/* Device events */
+#define EC_CMD_DEVICE_EVENT 0x00AA
+
+enum ec_device_event {
+ EC_DEVICE_EVENT_TRACKPAD,
+ EC_DEVICE_EVENT_DSP,
+ EC_DEVICE_EVENT_WIFI,
+};
+
+enum ec_device_event_param {
+ /* Get and clear pending device events */
+ EC_DEVICE_EVENT_PARAM_GET_CURRENT_EVENTS,
+ /* Get device event mask */
+ EC_DEVICE_EVENT_PARAM_GET_ENABLED_EVENTS,
+ /* Set device event mask */
+ EC_DEVICE_EVENT_PARAM_SET_ENABLED_EVENTS,
+};
+
+#define EC_DEVICE_EVENT_MASK(event_code) BIT(event_code % 32)
+
+struct ec_params_device_event {
+ uint32_t event_mask;
+ uint8_t param;
+} __ec_align_size1;
+
+struct ec_response_device_event {
+ uint32_t event_mask;
+} __ec_align4;
/*****************************************************************************/
/* Smart battery pass-through */
/* Get / Set 16-bit smart battery registers */
-#define EC_CMD_SB_READ_WORD 0xb0
-#define EC_CMD_SB_WRITE_WORD 0xb1
+#define EC_CMD_SB_READ_WORD 0x00B0
+#define EC_CMD_SB_WRITE_WORD 0x00B1
/* Get / Set string smart battery parameters
* formatted as SMBUS "block".
*/
-#define EC_CMD_SB_READ_BLOCK 0xb2
-#define EC_CMD_SB_WRITE_BLOCK 0xb3
+#define EC_CMD_SB_READ_BLOCK 0x00B2
+#define EC_CMD_SB_WRITE_BLOCK 0x00B3
struct ec_params_sb_rd {
uint8_t reg;
-} __packed;
+} __ec_align1;
struct ec_response_sb_rd_word {
uint16_t value;
-} __packed;
+} __ec_align2;
struct ec_params_sb_wr_word {
uint8_t reg;
uint16_t value;
-} __packed;
+} __ec_align1;
struct ec_response_sb_rd_block {
uint8_t data[32];
-} __packed;
+} __ec_align1;
struct ec_params_sb_wr_block {
uint8_t reg;
uint16_t data[32];
-} __packed;
+} __ec_align1;
/*****************************************************************************/
/* Battery vendor parameters
@@ -2854,7 +4280,7 @@ struct ec_params_sb_wr_block {
* requested value.
*/
-#define EC_CMD_BATTERY_VENDOR_PARAM 0xb4
+#define EC_CMD_BATTERY_VENDOR_PARAM 0x00B4
enum ec_battery_vendor_param_mode {
BATTERY_VENDOR_PARAM_MODE_GET = 0,
@@ -2865,257 +4291,105 @@ struct ec_params_battery_vendor_param {
uint32_t param;
uint32_t value;
uint8_t mode;
-} __packed;
+} __ec_align_size1;
struct ec_response_battery_vendor_param {
uint32_t value;
-} __packed;
+} __ec_align4;
/*****************************************************************************/
-/* Commands for I2S recording on audio codec. */
-
-#define EC_CMD_CODEC_I2S 0x00BC
-
-enum ec_codec_i2s_subcmd {
- EC_CODEC_SET_SAMPLE_DEPTH = 0x0,
- EC_CODEC_SET_GAIN = 0x1,
- EC_CODEC_GET_GAIN = 0x2,
- EC_CODEC_I2S_ENABLE = 0x3,
- EC_CODEC_I2S_SET_CONFIG = 0x4,
- EC_CODEC_I2S_SET_TDM_CONFIG = 0x5,
- EC_CODEC_I2S_SET_BCLK = 0x6,
+/*
+ * Smart Battery Firmware Update Commands
+ */
+#define EC_CMD_SB_FW_UPDATE 0x00B5
+
+enum ec_sb_fw_update_subcmd {
+ EC_SB_FW_UPDATE_PREPARE = 0x0,
+ EC_SB_FW_UPDATE_INFO = 0x1, /*query sb info */
+ EC_SB_FW_UPDATE_BEGIN = 0x2, /*check if protected */
+ EC_SB_FW_UPDATE_WRITE = 0x3, /*check if protected */
+ EC_SB_FW_UPDATE_END = 0x4,
+ EC_SB_FW_UPDATE_STATUS = 0x5,
+ EC_SB_FW_UPDATE_PROTECT = 0x6,
+ EC_SB_FW_UPDATE_MAX = 0x7,
};
-enum ec_sample_depth_value {
- EC_CODEC_SAMPLE_DEPTH_16 = 0,
- EC_CODEC_SAMPLE_DEPTH_24 = 1,
-};
+#define SB_FW_UPDATE_CMD_WRITE_BLOCK_SIZE 32
+#define SB_FW_UPDATE_CMD_STATUS_SIZE 2
+#define SB_FW_UPDATE_CMD_INFO_SIZE 8
-enum ec_i2s_config {
- EC_DAI_FMT_I2S = 0,
- EC_DAI_FMT_RIGHT_J = 1,
- EC_DAI_FMT_LEFT_J = 2,
- EC_DAI_FMT_PCM_A = 3,
- EC_DAI_FMT_PCM_B = 4,
- EC_DAI_FMT_PCM_TDM = 5,
-};
+struct ec_sb_fw_update_header {
+ uint16_t subcmd; /* enum ec_sb_fw_update_subcmd */
+ uint16_t fw_id; /* firmware id */
+} __ec_align4;
-struct ec_param_codec_i2s {
- /*
- * enum ec_codec_i2s_subcmd
- */
- uint8_t cmd;
+struct ec_params_sb_fw_update {
+ struct ec_sb_fw_update_header hdr;
union {
- /*
- * EC_CODEC_SET_SAMPLE_DEPTH
- * Value should be one of ec_sample_depth_value.
- */
- uint8_t depth;
+ /* EC_SB_FW_UPDATE_PREPARE = 0x0 */
+ /* EC_SB_FW_UPDATE_INFO = 0x1 */
+ /* EC_SB_FW_UPDATE_BEGIN = 0x2 */
+ /* EC_SB_FW_UPDATE_END = 0x4 */
+ /* EC_SB_FW_UPDATE_STATUS = 0x5 */
+ /* EC_SB_FW_UPDATE_PROTECT = 0x6 */
+ /* Those have no args */
+
+ /* EC_SB_FW_UPDATE_WRITE = 0x3 */
+ struct __ec_align4 {
+ uint8_t data[SB_FW_UPDATE_CMD_WRITE_BLOCK_SIZE];
+ } write;
+ };
+} __ec_align4;
- /*
- * EC_CODEC_SET_GAIN
- * Value should be 0~43 for both channels.
- */
- struct ec_param_codec_i2s_set_gain {
- uint8_t left;
- uint8_t right;
- } __packed gain;
+struct ec_response_sb_fw_update {
+ union {
+ /* EC_SB_FW_UPDATE_INFO = 0x1 */
+ struct __ec_align1 {
+ uint8_t data[SB_FW_UPDATE_CMD_INFO_SIZE];
+ } info;
- /*
- * EC_CODEC_I2S_ENABLE
- * 1 to enable, 0 to disable.
- */
- uint8_t i2s_enable;
+ /* EC_SB_FW_UPDATE_STATUS = 0x5 */
+ struct __ec_align1 {
+ uint8_t data[SB_FW_UPDATE_CMD_STATUS_SIZE];
+ } status;
+ };
+} __ec_align1;
- /*
- * EC_CODEC_I2S_SET_COFNIG
- * Value should be one of ec_i2s_config.
- */
- uint8_t i2s_config;
+/*
+ * Entering Verified Boot Mode Command
+ * Default mode is VBOOT_MODE_NORMAL if EC did not receive this command.
+ * Valid Modes are: normal, developer, and recovery.
+ */
+#define EC_CMD_ENTERING_MODE 0x00B6
- /*
- * EC_CODEC_I2S_SET_TDM_CONFIG
- * Value should be one of ec_i2s_config.
- */
- struct ec_param_codec_i2s_tdm {
- /*
- * 0 to 496
- */
- int16_t ch0_delay;
- /*
- * -1 to 496
- */
- int16_t ch1_delay;
- uint8_t adjacent_to_ch0;
- uint8_t adjacent_to_ch1;
- } __packed tdm_param;
+struct ec_params_entering_mode {
+ int vboot_mode;
+} __ec_align4;
- /*
- * EC_CODEC_I2S_SET_BCLK
- */
- uint32_t bclk;
- };
-} __packed;
-
-/*
- * For subcommand EC_CODEC_GET_GAIN.
- */
-struct ec_response_codec_gain {
- uint8_t left;
- uint8_t right;
-} __packed;
+#define VBOOT_MODE_NORMAL 0
+#define VBOOT_MODE_DEVELOPER 1
+#define VBOOT_MODE_RECOVERY 2
/*****************************************************************************/
-/* System commands */
-
/*
- * TODO(crosbug.com/p/23747): This is a confusing name, since it doesn't
- * necessarily reboot the EC. Rename to "image" or something similar?
+ * I2C passthru protection command: Protects I2C tunnels against access on
+ * certain addresses (board-specific).
*/
-#define EC_CMD_REBOOT_EC 0xd2
+#define EC_CMD_I2C_PASSTHRU_PROTECT 0x00B7
-/* Command */
-enum ec_reboot_cmd {
- EC_REBOOT_CANCEL = 0, /* Cancel a pending reboot */
- EC_REBOOT_JUMP_RO = 1, /* Jump to RO without rebooting */
- EC_REBOOT_JUMP_RW = 2, /* Jump to RW without rebooting */
- /* (command 3 was jump to RW-B) */
- EC_REBOOT_COLD = 4, /* Cold-reboot */
- EC_REBOOT_DISABLE_JUMP = 5, /* Disable jump until next reboot */
- EC_REBOOT_HIBERNATE = 6 /* Hibernate EC */
+enum ec_i2c_passthru_protect_subcmd {
+ EC_CMD_I2C_PASSTHRU_PROTECT_STATUS = 0x0,
+ EC_CMD_I2C_PASSTHRU_PROTECT_ENABLE = 0x1,
};
-/* Flags for ec_params_reboot_ec.reboot_flags */
-#define EC_REBOOT_FLAG_RESERVED0 (1 << 0) /* Was recovery request */
-#define EC_REBOOT_FLAG_ON_AP_SHUTDOWN (1 << 1) /* Reboot after AP shutdown */
-
-struct ec_params_reboot_ec {
- uint8_t cmd; /* enum ec_reboot_cmd */
- uint8_t flags; /* See EC_REBOOT_FLAG_* */
-} __packed;
-
-/*
- * Get information on last EC panic.
- *
- * Returns variable-length platform-dependent panic information. See panic.h
- * for details.
- */
-#define EC_CMD_GET_PANIC_INFO 0xd3
-
-/*****************************************************************************/
-/*
- * ACPI commands
- *
- * These are valid ONLY on the ACPI command/data port.
- */
-
-/*
- * ACPI Read Embedded Controller
- *
- * This reads from ACPI memory space on the EC (EC_ACPI_MEM_*).
- *
- * Use the following sequence:
- *
- * - Write EC_CMD_ACPI_READ to EC_LPC_ADDR_ACPI_CMD
- * - Wait for EC_LPC_CMDR_PENDING bit to clear
- * - Write address to EC_LPC_ADDR_ACPI_DATA
- * - Wait for EC_LPC_CMDR_DATA bit to set
- * - Read value from EC_LPC_ADDR_ACPI_DATA
- */
-#define EC_CMD_ACPI_READ 0x80
-
-/*
- * ACPI Write Embedded Controller
- *
- * This reads from ACPI memory space on the EC (EC_ACPI_MEM_*).
- *
- * Use the following sequence:
- *
- * - Write EC_CMD_ACPI_WRITE to EC_LPC_ADDR_ACPI_CMD
- * - Wait for EC_LPC_CMDR_PENDING bit to clear
- * - Write address to EC_LPC_ADDR_ACPI_DATA
- * - Wait for EC_LPC_CMDR_PENDING bit to clear
- * - Write value to EC_LPC_ADDR_ACPI_DATA
- */
-#define EC_CMD_ACPI_WRITE 0x81
-
-/*
- * ACPI Query Embedded Controller
- *
- * This clears the lowest-order bit in the currently pending host events, and
- * sets the result code to the 1-based index of the bit (event 0x00000001 = 1,
- * event 0x80000000 = 32), or 0 if no event was pending.
- */
-#define EC_CMD_ACPI_QUERY_EVENT 0x84
-
-/* Valid addresses in ACPI memory space, for read/write commands */
-
-/* Memory space version; set to EC_ACPI_MEM_VERSION_CURRENT */
-#define EC_ACPI_MEM_VERSION 0x00
-/*
- * Test location; writing value here updates test compliment byte to (0xff -
- * value).
- */
-#define EC_ACPI_MEM_TEST 0x01
-/* Test compliment; writes here are ignored. */
-#define EC_ACPI_MEM_TEST_COMPLIMENT 0x02
-
-/* Keyboard backlight brightness percent (0 - 100) */
-#define EC_ACPI_MEM_KEYBOARD_BACKLIGHT 0x03
-/* DPTF Target Fan Duty (0-100, 0xff for auto/none) */
-#define EC_ACPI_MEM_FAN_DUTY 0x04
-
-/*
- * DPTF temp thresholds. Any of the EC's temp sensors can have up to two
- * independent thresholds attached to them. The current value of the ID
- * register determines which sensor is affected by the THRESHOLD and COMMIT
- * registers. The THRESHOLD register uses the same EC_TEMP_SENSOR_OFFSET scheme
- * as the memory-mapped sensors. The COMMIT register applies those settings.
- *
- * The spec does not mandate any way to read back the threshold settings
- * themselves, but when a threshold is crossed the AP needs a way to determine
- * which sensor(s) are responsible. Each reading of the ID register clears and
- * returns one sensor ID that has crossed one of its threshold (in either
- * direction) since the last read. A value of 0xFF means "no new thresholds
- * have tripped". Setting or enabling the thresholds for a sensor will clear
- * the unread event count for that sensor.
- */
-#define EC_ACPI_MEM_TEMP_ID 0x05
-#define EC_ACPI_MEM_TEMP_THRESHOLD 0x06
-#define EC_ACPI_MEM_TEMP_COMMIT 0x07
-/*
- * Here are the bits for the COMMIT register:
- * bit 0 selects the threshold index for the chosen sensor (0/1)
- * bit 1 enables/disables the selected threshold (0 = off, 1 = on)
- * Each write to the commit register affects one threshold.
- */
-#define EC_ACPI_MEM_TEMP_COMMIT_SELECT_MASK (1 << 0)
-#define EC_ACPI_MEM_TEMP_COMMIT_ENABLE_MASK (1 << 1)
-/*
- * Example:
- *
- * Set the thresholds for sensor 2 to 50 C and 60 C:
- * write 2 to [0x05] -- select temp sensor 2
- * write 0x7b to [0x06] -- C_TO_K(50) - EC_TEMP_SENSOR_OFFSET
- * write 0x2 to [0x07] -- enable threshold 0 with this value
- * write 0x85 to [0x06] -- C_TO_K(60) - EC_TEMP_SENSOR_OFFSET
- * write 0x3 to [0x07] -- enable threshold 1 with this value
- *
- * Disable the 60 C threshold, leaving the 50 C threshold unchanged:
- * write 2 to [0x05] -- select temp sensor 2
- * write 0x1 to [0x07] -- disable threshold 1
- */
-
-/* DPTF battery charging current limit */
-#define EC_ACPI_MEM_CHARGING_LIMIT 0x08
-
-/* Charging limit is specified in 64 mA steps */
-#define EC_ACPI_MEM_CHARGING_LIMIT_STEP_MA 64
-/* Value to disable DPTF battery charging limit */
-#define EC_ACPI_MEM_CHARGING_LIMIT_DISABLED 0xff
+struct ec_params_i2c_passthru_protect {
+ uint8_t subcmd;
+ uint8_t port; /* I2C port number */
+} __ec_align1;
-/* Current version of ACPI memory address space */
-#define EC_ACPI_MEM_VERSION_CURRENT 1
+struct ec_response_i2c_passthru_protect {
+ uint8_t status; /* Status flags (0: unlocked, 1: locked) */
+} __ec_align1;
/*****************************************************************************/
@@ -3124,7 +4398,8 @@ struct ec_params_reboot_ec {
*
* These commands are for sending and receiving message via HDMI CEC
*/
-#define EC_MAX_CEC_MSG_LEN 16
+
+#define MAX_CEC_MSG_LEN 16
/* CEC message from the AP to be written on the CEC bus */
#define EC_CMD_CEC_WRITE_MSG 0x00B8
@@ -3134,8 +4409,8 @@ struct ec_params_reboot_ec {
* @msg: message content to write to the CEC bus
*/
struct ec_params_cec_write {
- uint8_t msg[EC_MAX_CEC_MSG_LEN];
-} __packed;
+ uint8_t msg[MAX_CEC_MSG_LEN];
+} __ec_align1;
/* Set various CEC parameters */
#define EC_CMD_CEC_SET 0x00BA
@@ -3144,14 +4419,14 @@ struct ec_params_cec_write {
* struct ec_params_cec_set - CEC parameters set
* @cmd: parameter type, can be CEC_CMD_ENABLE or CEC_CMD_LOGICAL_ADDRESS
* @val: in case cmd is CEC_CMD_ENABLE, this field can be 0 to disable CEC
- * or 1 to enable CEC functionality, in case cmd is CEC_CMD_LOGICAL_ADDRESS,
- * this field encodes the requested logical address between 0 and 15
- * or 0xff to unregister
+ * or 1 to enable CEC functionality, in case cmd is
+ * CEC_CMD_LOGICAL_ADDRESS, this field encodes the requested logical
+ * address between 0 and 15 or 0xff to unregister
*/
struct ec_params_cec_set {
uint8_t cmd; /* enum cec_command */
uint8_t val;
-} __packed;
+} __ec_align1;
/* Read various CEC parameters */
#define EC_CMD_CEC_GET 0x00BB
@@ -3162,7 +4437,7 @@ struct ec_params_cec_set {
*/
struct ec_params_cec_get {
uint8_t cmd; /* enum cec_command */
-} __packed;
+} __ec_align1;
/**
* struct ec_response_cec_get - CEC parameters get response
@@ -3173,10 +4448,10 @@ struct ec_params_cec_get {
*/
struct ec_response_cec_get {
uint8_t val;
-} __packed;
+} __ec_align1;
/* CEC parameters command */
-enum ec_cec_command {
+enum cec_command {
/* CEC reading, writing and events enable */
CEC_CMD_ENABLE,
/* CEC logical address */
@@ -3191,6 +4466,134 @@ enum mkbp_cec_event {
EC_MKBP_CEC_SEND_FAILED = BIT(1),
};
+/*****************************************************************************/
+
+/* Commands for I2S recording on audio codec. */
+
+#define EC_CMD_CODEC_I2S 0x00BC
+#define EC_WOV_I2S_SAMPLE_RATE 48000
+
+enum ec_codec_i2s_subcmd {
+ EC_CODEC_SET_SAMPLE_DEPTH = 0x0,
+ EC_CODEC_SET_GAIN = 0x1,
+ EC_CODEC_GET_GAIN = 0x2,
+ EC_CODEC_I2S_ENABLE = 0x3,
+ EC_CODEC_I2S_SET_CONFIG = 0x4,
+ EC_CODEC_I2S_SET_TDM_CONFIG = 0x5,
+ EC_CODEC_I2S_SET_BCLK = 0x6,
+ EC_CODEC_I2S_SUBCMD_COUNT = 0x7,
+};
+
+enum ec_sample_depth_value {
+ EC_CODEC_SAMPLE_DEPTH_16 = 0,
+ EC_CODEC_SAMPLE_DEPTH_24 = 1,
+};
+
+enum ec_i2s_config {
+ EC_DAI_FMT_I2S = 0,
+ EC_DAI_FMT_RIGHT_J = 1,
+ EC_DAI_FMT_LEFT_J = 2,
+ EC_DAI_FMT_PCM_A = 3,
+ EC_DAI_FMT_PCM_B = 4,
+ EC_DAI_FMT_PCM_TDM = 5,
+};
+
+/*
+ * For subcommand EC_CODEC_GET_GAIN.
+ */
+struct __ec_align1 ec_codec_i2s_gain {
+ uint8_t left;
+ uint8_t right;
+};
+
+struct __ec_todo_unpacked ec_param_codec_i2s_tdm {
+ int16_t ch0_delay; /* 0 to 496 */
+ int16_t ch1_delay; /* -1 to 496 */
+ uint8_t adjacent_to_ch0;
+ uint8_t adjacent_to_ch1;
+};
+
+struct __ec_todo_packed ec_param_codec_i2s {
+ /* enum ec_codec_i2s_subcmd */
+ uint8_t cmd;
+ union {
+ /*
+ * EC_CODEC_SET_SAMPLE_DEPTH
+ * Value should be one of ec_sample_depth_value.
+ */
+ uint8_t depth;
+
+ /*
+ * EC_CODEC_SET_GAIN
+ * Value should be 0~43 for both channels.
+ */
+ struct ec_codec_i2s_gain gain;
+
+ /*
+ * EC_CODEC_I2S_ENABLE
+ * 1 to enable, 0 to disable.
+ */
+ uint8_t i2s_enable;
+
+ /*
+ * EC_CODEC_I2S_SET_CONFIG
+ * Value should be one of ec_i2s_config.
+ */
+ uint8_t i2s_config;
+
+ /*
+ * EC_CODEC_I2S_SET_TDM_CONFIG
+ * Value should be one of ec_i2s_config.
+ */
+ struct ec_param_codec_i2s_tdm tdm_param;
+
+ /*
+ * EC_CODEC_I2S_SET_BCLK
+ */
+ uint32_t bclk;
+ };
+};
+
+
+/*****************************************************************************/
+/* System commands */
+
+/*
+ * TODO(crosbug.com/p/23747): This is a confusing name, since it doesn't
+ * necessarily reboot the EC. Rename to "image" or something similar?
+ */
+#define EC_CMD_REBOOT_EC 0x00D2
+
+/* Command */
+enum ec_reboot_cmd {
+ EC_REBOOT_CANCEL = 0, /* Cancel a pending reboot */
+ EC_REBOOT_JUMP_RO = 1, /* Jump to RO without rebooting */
+ EC_REBOOT_JUMP_RW = 2, /* Jump to active RW without rebooting */
+ /* (command 3 was jump to RW-B) */
+ EC_REBOOT_COLD = 4, /* Cold-reboot */
+ EC_REBOOT_DISABLE_JUMP = 5, /* Disable jump until next reboot */
+ EC_REBOOT_HIBERNATE = 6, /* Hibernate EC */
+ EC_REBOOT_HIBERNATE_CLEAR_AP_OFF = 7, /* and clears AP_OFF flag */
+};
+
+/* Flags for ec_params_reboot_ec.reboot_flags */
+#define EC_REBOOT_FLAG_RESERVED0 BIT(0) /* Was recovery request */
+#define EC_REBOOT_FLAG_ON_AP_SHUTDOWN BIT(1) /* Reboot after AP shutdown */
+#define EC_REBOOT_FLAG_SWITCH_RW_SLOT BIT(2) /* Switch RW slot */
+
+struct ec_params_reboot_ec {
+ uint8_t cmd; /* enum ec_reboot_cmd */
+ uint8_t flags; /* See EC_REBOOT_FLAG_* */
+} __ec_align1;
+
+/*
+ * Get information on last EC panic.
+ *
+ * Returns variable-length platform-dependent panic information. See panic.h
+ * for details.
+ */
+#define EC_CMD_GET_PANIC_INFO 0x00D3
+
/*****************************************************************************/
/*
* Special commands
@@ -3208,7 +4611,7 @@ enum mkbp_cec_event {
*
* Use EC_CMD_REBOOT_EC to reboot the EC more politely.
*/
-#define EC_CMD_REBOOT 0xd1 /* Think "die" */
+#define EC_CMD_REBOOT 0x00D1 /* Think "die" */
/*
* Resend last response (not supported on LPC).
@@ -3217,7 +4620,7 @@ enum mkbp_cec_event {
* there was no previous command, or the previous command's response was too
* big to save.
*/
-#define EC_CMD_RESEND_RESPONSE 0xdb
+#define EC_CMD_RESEND_RESPONSE 0x00DB
/*
* This header byte on a command indicate version 0. Any header byte less
@@ -3229,9 +4632,7 @@ enum mkbp_cec_event {
*
* The old EC interface must not use commands 0xdc or higher.
*/
-#define EC_CMD_VERSION0 0xdc
-
-#endif /* !__ACPI__ */
+#define EC_CMD_VERSION0 0x00DC
/*****************************************************************************/
/*
@@ -3241,21 +4642,56 @@ enum mkbp_cec_event {
*/
/* EC to PD MCU exchange status command */
-#define EC_CMD_PD_EXCHANGE_STATUS 0x100
+#define EC_CMD_PD_EXCHANGE_STATUS 0x0100
+#define EC_VER_PD_EXCHANGE_STATUS 2
+
+enum pd_charge_state {
+ PD_CHARGE_NO_CHANGE = 0, /* Don't change charge state */
+ PD_CHARGE_NONE, /* No charging allowed */
+ PD_CHARGE_5V, /* 5V charging only */
+ PD_CHARGE_MAX /* Charge at max voltage */
+};
/* Status of EC being sent to PD */
+#define EC_STATUS_HIBERNATING BIT(0)
+
struct ec_params_pd_status {
- int8_t batt_soc; /* battery state of charge */
-} __packed;
+ uint8_t status; /* EC status */
+ int8_t batt_soc; /* battery state of charge */
+ uint8_t charge_state; /* charging state (from enum pd_charge_state) */
+} __ec_align1;
/* Status of PD being sent back to EC */
+#define PD_STATUS_HOST_EVENT BIT(0) /* Forward host event to AP */
+#define PD_STATUS_IN_RW BIT(1) /* Running RW image */
+#define PD_STATUS_JUMPED_TO_IMAGE BIT(2) /* Current image was jumped to */
+#define PD_STATUS_TCPC_ALERT_0 BIT(3) /* Alert active in port 0 TCPC */
+#define PD_STATUS_TCPC_ALERT_1 BIT(4) /* Alert active in port 1 TCPC */
+#define PD_STATUS_TCPC_ALERT_2 BIT(5) /* Alert active in port 2 TCPC */
+#define PD_STATUS_TCPC_ALERT_3 BIT(6) /* Alert active in port 3 TCPC */
+#define PD_STATUS_EC_INT_ACTIVE (PD_STATUS_TCPC_ALERT_0 | \
+ PD_STATUS_TCPC_ALERT_1 | \
+ PD_STATUS_HOST_EVENT)
struct ec_response_pd_status {
- int8_t status; /* PD MCU status */
- uint32_t curr_lim_ma; /* input current limit */
-} __packed;
+ uint32_t curr_lim_ma; /* input current limit */
+ uint16_t status; /* PD MCU status */
+ int8_t active_charge_port; /* active charging port */
+} __ec_align_size1;
+
+/* AP to PD MCU host event status command, cleared on read */
+#define EC_CMD_PD_HOST_EVENT_STATUS 0x0104
+
+/* PD MCU host event status bits */
+#define PD_EVENT_UPDATE_DEVICE BIT(0)
+#define PD_EVENT_POWER_CHANGE BIT(1)
+#define PD_EVENT_IDENTITY_RECEIVED BIT(2)
+#define PD_EVENT_DATA_SWAP BIT(3)
+struct ec_response_host_event_status {
+ uint32_t status; /* PD MCU host event status */
+} __ec_align4;
/* Set USB type-C port role and muxes */
-#define EC_CMD_USB_PD_CONTROL 0x101
+#define EC_CMD_USB_PD_CONTROL 0x0101
enum usb_pd_control_role {
USB_PD_CTRL_ROLE_NO_CHANGE = 0,
@@ -3263,6 +4699,8 @@ enum usb_pd_control_role {
USB_PD_CTRL_ROLE_TOGGLE_OFF = 2,
USB_PD_CTRL_ROLE_FORCE_SINK = 3,
USB_PD_CTRL_ROLE_FORCE_SOURCE = 4,
+ USB_PD_CTRL_ROLE_FREEZE = 5,
+ USB_PD_CTRL_ROLE_COUNT
};
enum usb_pd_control_mux {
@@ -3272,6 +4710,7 @@ enum usb_pd_control_mux {
USB_PD_CTRL_MUX_DP = 3,
USB_PD_CTRL_MUX_DOCK = 4,
USB_PD_CTRL_MUX_AUTO = 5,
+ USB_PD_CTRL_MUX_COUNT
};
enum usb_pd_control_swap {
@@ -3287,11 +4726,11 @@ struct ec_params_usb_pd_control {
uint8_t role;
uint8_t mux;
uint8_t swap;
-} __packed;
+} __ec_align1;
-#define PD_CTRL_RESP_ENABLED_COMMS (1 << 0) /* Communication enabled */
-#define PD_CTRL_RESP_ENABLED_CONNECTED (1 << 1) /* Device connected */
-#define PD_CTRL_RESP_ENABLED_PD_CAPABLE (1 << 2) /* Partner is PD capable */
+#define PD_CTRL_RESP_ENABLED_COMMS BIT(0) /* Communication enabled */
+#define PD_CTRL_RESP_ENABLED_CONNECTED BIT(1) /* Device connected */
+#define PD_CTRL_RESP_ENABLED_PD_CAPABLE BIT(2) /* Partner is PD capable */
#define PD_CTRL_RESP_ROLE_POWER BIT(0) /* 0=SNK/1=SRC */
#define PD_CTRL_RESP_ROLE_DATA BIT(1) /* 0=UFP/1=DFP */
@@ -3301,28 +4740,54 @@ struct ec_params_usb_pd_control {
#define PD_CTRL_RESP_ROLE_USB_COMM BIT(5) /* Partner USB comm capable */
#define PD_CTRL_RESP_ROLE_EXT_POWERED BIT(6) /* Partner externally powerd */
+struct ec_response_usb_pd_control {
+ uint8_t enabled;
+ uint8_t role;
+ uint8_t polarity;
+ uint8_t state;
+} __ec_align1;
+
struct ec_response_usb_pd_control_v1 {
uint8_t enabled;
uint8_t role;
uint8_t polarity;
char state[32];
-} __packed;
+} __ec_align1;
+
+/* Values representing usbc PD CC state */
+#define USBC_PD_CC_NONE 0 /* No accessory connected */
+#define USBC_PD_CC_NO_UFP 1 /* No UFP accessory connected */
+#define USBC_PD_CC_AUDIO_ACC 2 /* Audio accessory connected */
+#define USBC_PD_CC_DEBUG_ACC 3 /* Debug accessory connected */
+#define USBC_PD_CC_UFP_ATTACHED 4 /* UFP attached to usbc */
+#define USBC_PD_CC_DFP_ATTACHED 5 /* DPF attached to usbc */
+
+struct ec_response_usb_pd_control_v2 {
+ uint8_t enabled;
+ uint8_t role;
+ uint8_t polarity;
+ char state[32];
+ uint8_t cc_state; /* USBC_PD_CC_*Encoded cc state */
+ uint8_t dp_mode; /* Current DP pin mode (MODE_DP_PIN_[A-E]) */
+ /* CL:1500994 Current cable type */
+ uint8_t reserved_cable_type;
+} __ec_align1;
-#define EC_CMD_USB_PD_PORTS 0x102
+#define EC_CMD_USB_PD_PORTS 0x0102
/* Maximum number of PD ports on a device, num_ports will be <= this */
#define EC_USB_PD_MAX_PORTS 8
struct ec_response_usb_pd_ports {
uint8_t num_ports;
-} __packed;
+} __ec_align1;
-#define EC_CMD_USB_PD_POWER_INFO 0x103
+#define EC_CMD_USB_PD_POWER_INFO 0x0103
#define PD_POWER_CHARGING_PORT 0xff
struct ec_params_usb_pd_power_info {
uint8_t port;
-} __packed;
+} __ec_align1;
enum usb_chg_type {
USB_CHG_TYPE_NONE,
@@ -3335,6 +4800,7 @@ enum usb_chg_type {
USB_CHG_TYPE_OTHER,
USB_CHG_TYPE_VBUS,
USB_CHG_TYPE_UNKNOWN,
+ USB_CHG_TYPE_DEDICATED,
};
enum usb_power_roles {
USB_PD_PORT_POWER_DISCONNECTED,
@@ -3348,7 +4814,7 @@ struct usb_chg_measures {
uint16_t voltage_now;
uint16_t current_max;
uint16_t current_lim;
-} __packed;
+} __ec_align2;
struct ec_response_usb_pd_power_info {
uint8_t role;
@@ -3357,11 +4823,8 @@ struct ec_response_usb_pd_power_info {
uint8_t reserved1;
struct usb_chg_measures meas;
uint32_t max_power;
-} __packed;
+} __ec_align4;
-struct ec_params_usb_pd_info_request {
- uint8_t port;
-} __packed;
/*
* This command will return the number of USB PD charge port + the number
@@ -3371,7 +4834,47 @@ struct ec_params_usb_pd_info_request {
#define EC_CMD_CHARGE_PORT_COUNT 0x0105
struct ec_response_charge_port_count {
uint8_t port_count;
-} __packed;
+} __ec_align1;
+
+/* Write USB-PD device FW */
+#define EC_CMD_USB_PD_FW_UPDATE 0x0110
+
+enum usb_pd_fw_update_cmds {
+ USB_PD_FW_REBOOT,
+ USB_PD_FW_FLASH_ERASE,
+ USB_PD_FW_FLASH_WRITE,
+ USB_PD_FW_ERASE_SIG,
+};
+
+struct ec_params_usb_pd_fw_update {
+ uint16_t dev_id;
+ uint8_t cmd;
+ uint8_t port;
+ uint32_t size; /* Size to write in bytes */
+ /* Followed by data to write */
+} __ec_align4;
+
+/* Write USB-PD Accessory RW_HASH table entry */
+#define EC_CMD_USB_PD_RW_HASH_ENTRY 0x0111
+/* RW hash is first 20 bytes of SHA-256 of RW section */
+#define PD_RW_HASH_SIZE 20
+struct ec_params_usb_pd_rw_hash_entry {
+ uint16_t dev_id;
+ uint8_t dev_rw_hash[PD_RW_HASH_SIZE];
+ uint8_t reserved; /*
+ * For alignment of current_image
+ * TODO(rspangler) but it's not aligned!
+ * Should have been reserved[2].
+ */
+ uint32_t current_image; /* One of ec_current_image */
+} __ec_align1;
+
+/* Read USB-PD Accessory info */
+#define EC_CMD_USB_PD_DEV_INFO 0x0112
+
+struct ec_params_usb_pd_info_request {
+ uint8_t port;
+} __ec_align1;
/* Read USB-PD Device discovery info */
#define EC_CMD_USB_PD_DISCOVERY 0x0113
@@ -3379,7 +4882,7 @@ struct ec_params_usb_pd_discovery_entry {
uint16_t vid; /* USB-IF VID */
uint16_t pid; /* USB-IF PID */
uint8_t ptype; /* product type (hub,periph,cable,ama) */
-} __packed;
+} __ec_align_size1;
/* Override default charge behavior */
#define EC_CMD_PD_CHARGE_PORT_OVERRIDE 0x0114
@@ -3393,9 +4896,13 @@ enum usb_pd_override_ports {
struct ec_params_charge_port_override {
int16_t override_port; /* Override port# */
-} __packed;
+} __ec_align2;
-/* Read (and delete) one entry of PD event log */
+/*
+ * Read (and delete) one entry of PD event log.
+ * TODO(crbug.com/751742): Make this host command more generic to accommodate
+ * future non-PD logs that use the same internal EC event_log.
+ */
#define EC_CMD_PD_GET_LOG_ENTRY 0x0115
struct ec_response_pd_log {
@@ -3404,7 +4911,7 @@ struct ec_response_pd_log {
uint8_t size_port; /* [7:5] port number [4:0] payload size in bytes */
uint16_t data; /* type-defined data payload */
uint8_t payload[0]; /* optional additional data payload: 0..16 bytes */
-} __packed;
+} __ec_align4;
/* The timestamp is the microsecond counter shifted to get about a ms. */
#define PD_LOG_TIMESTAMP_SHIFT 10 /* 1 LSB = 1024us */
@@ -3470,35 +4977,698 @@ struct mcdp_version {
uint8_t major;
uint8_t minor;
uint16_t build;
-} __packed;
+} __ec_align4;
struct mcdp_info {
uint8_t family[2];
uint8_t chipid[2];
struct mcdp_version irom;
struct mcdp_version fw;
-} __packed;
+} __ec_align4;
/* struct mcdp_info field decoding */
#define MCDP_CHIPID(chipid) ((chipid[0] << 8) | chipid[1])
#define MCDP_FAMILY(family) ((family[0] << 8) | family[1])
+/* Get/Set USB-PD Alternate mode info */
+#define EC_CMD_USB_PD_GET_AMODE 0x0116
+struct ec_params_usb_pd_get_mode_request {
+ uint16_t svid_idx; /* SVID index to get */
+ uint8_t port; /* port */
+} __ec_align_size1;
+
+struct ec_params_usb_pd_get_mode_response {
+ uint16_t svid; /* SVID */
+ uint16_t opos; /* Object Position */
+ uint32_t vdo[6]; /* Mode VDOs */
+} __ec_align4;
+
+#define EC_CMD_USB_PD_SET_AMODE 0x0117
+
+enum pd_mode_cmd {
+ PD_EXIT_MODE = 0,
+ PD_ENTER_MODE = 1,
+ /* Not a command. Do NOT remove. */
+ PD_MODE_CMD_COUNT,
+};
+
+struct ec_params_usb_pd_set_mode_request {
+ uint32_t cmd; /* enum pd_mode_cmd */
+ uint16_t svid; /* SVID to set */
+ uint8_t opos; /* Object Position */
+ uint8_t port; /* port */
+} __ec_align4;
+
+/* Ask the PD MCU to record a log of a requested type */
+#define EC_CMD_PD_WRITE_LOG_ENTRY 0x0118
+
+struct ec_params_pd_write_log_entry {
+ uint8_t type; /* event type : see PD_EVENT_xx above */
+ uint8_t port; /* port#, or 0 for events unrelated to a given port */
+} __ec_align1;
+
+
+/* Control USB-PD chip */
+#define EC_CMD_PD_CONTROL 0x0119
+
+enum ec_pd_control_cmd {
+ PD_SUSPEND = 0, /* Suspend the PD chip (EC: stop talking to PD) */
+ PD_RESUME, /* Resume the PD chip (EC: start talking to PD) */
+ PD_RESET, /* Force reset the PD chip */
+ PD_CONTROL_DISABLE, /* Disable further calls to this command */
+ PD_CHIP_ON, /* Power on the PD chip */
+};
+
+struct ec_params_pd_control {
+ uint8_t chip; /* chip id */
+ uint8_t subcmd;
+} __ec_align1;
+
/* Get info about USB-C SS muxes */
-#define EC_CMD_USB_PD_MUX_INFO 0x11a
+#define EC_CMD_USB_PD_MUX_INFO 0x011A
struct ec_params_usb_pd_mux_info {
uint8_t port; /* USB-C port number */
-} __packed;
+} __ec_align1;
/* Flags representing mux state */
-#define USB_PD_MUX_USB_ENABLED (1 << 0)
-#define USB_PD_MUX_DP_ENABLED (1 << 1)
-#define USB_PD_MUX_POLARITY_INVERTED (1 << 2)
-#define USB_PD_MUX_HPD_IRQ (1 << 3)
+#define USB_PD_MUX_USB_ENABLED BIT(0) /* USB connected */
+#define USB_PD_MUX_DP_ENABLED BIT(1) /* DP connected */
+#define USB_PD_MUX_POLARITY_INVERTED BIT(2) /* CC line Polarity inverted */
+#define USB_PD_MUX_HPD_IRQ BIT(3) /* HPD IRQ is asserted */
+#define USB_PD_MUX_HPD_LVL BIT(4) /* HPD level is asserted */
struct ec_response_usb_pd_mux_info {
uint8_t flags; /* USB_PD_MUX_*-encoded USB mux state */
-} __packed;
+} __ec_align1;
+
+#define EC_CMD_PD_CHIP_INFO 0x011B
+
+struct ec_params_pd_chip_info {
+ uint8_t port; /* USB-C port number */
+ uint8_t renew; /* Force renewal */
+} __ec_align1;
+
+struct ec_response_pd_chip_info {
+ uint16_t vendor_id;
+ uint16_t product_id;
+ uint16_t device_id;
+ union {
+ uint8_t fw_version_string[8];
+ uint64_t fw_version_number;
+ };
+} __ec_align2;
+
+struct ec_response_pd_chip_info_v1 {
+ uint16_t vendor_id;
+ uint16_t product_id;
+ uint16_t device_id;
+ union {
+ uint8_t fw_version_string[8];
+ uint64_t fw_version_number;
+ };
+ union {
+ uint8_t min_req_fw_version_string[8];
+ uint64_t min_req_fw_version_number;
+ };
+} __ec_align2;
+
+/* Run RW signature verification and get status */
+#define EC_CMD_RWSIG_CHECK_STATUS 0x011C
+
+struct ec_response_rwsig_check_status {
+ uint32_t status;
+} __ec_align4;
+
+/* For controlling RWSIG task */
+#define EC_CMD_RWSIG_ACTION 0x011D
+
+enum rwsig_action {
+ RWSIG_ACTION_ABORT = 0, /* Abort RWSIG and prevent jumping */
+ RWSIG_ACTION_CONTINUE = 1, /* Jump to RW immediately */
+};
+
+struct ec_params_rwsig_action {
+ uint32_t action;
+} __ec_align4;
+
+/* Run verification on a slot */
+#define EC_CMD_EFS_VERIFY 0x011E
+
+struct ec_params_efs_verify {
+ uint8_t region; /* enum ec_flash_region */
+} __ec_align1;
+
+/*
+ * Retrieve info from Cros Board Info store. Response is based on the data
+ * type. Integers return a uint32. Strings return a string, using the response
+ * size to determine how big it is.
+ */
+#define EC_CMD_GET_CROS_BOARD_INFO 0x011F
+/*
+ * Write info into Cros Board Info on EEPROM. Write fails if the board has
+ * hardware write-protect enabled.
+ */
+#define EC_CMD_SET_CROS_BOARD_INFO 0x0120
+
+enum cbi_data_tag {
+ CBI_TAG_BOARD_VERSION = 0, /* uint32_t or smaller */
+ CBI_TAG_OEM_ID = 1, /* uint32_t or smaller */
+ CBI_TAG_SKU_ID = 2, /* uint32_t or smaller */
+ CBI_TAG_DRAM_PART_NUM = 3, /* variable length ascii, nul terminated. */
+ CBI_TAG_OEM_NAME = 4, /* variable length ascii, nul terminated. */
+ CBI_TAG_MODEL_ID = 5, /* uint32_t or smaller */
+ CBI_TAG_COUNT,
+};
+
+/*
+ * Flags to control read operation
+ *
+ * RELOAD: Invalidate cache and read data from EEPROM. Useful to verify
+ * write was successful without reboot.
+ */
+#define CBI_GET_RELOAD BIT(0)
+
+struct ec_params_get_cbi {
+ uint32_t tag; /* enum cbi_data_tag */
+ uint32_t flag; /* CBI_GET_* */
+} __ec_align4;
+
+/*
+ * Flags to control write behavior.
+ *
+ * NO_SYNC: Makes EC update data in RAM but skip writing to EEPROM. It's
+ * useful when writing multiple fields in a row.
+ * INIT: Need to be set when creating a new CBI from scratch. All fields
+ * will be initialized to zero first.
+ */
+#define CBI_SET_NO_SYNC BIT(0)
+#define CBI_SET_INIT BIT(1)
+
+struct ec_params_set_cbi {
+ uint32_t tag; /* enum cbi_data_tag */
+ uint32_t flag; /* CBI_SET_* */
+ uint32_t size; /* Data size */
+ uint8_t data[]; /* For string and raw data */
+} __ec_align1;
+
+/*
+ * Information about resets of the AP by the EC and the EC's own uptime.
+ */
+#define EC_CMD_GET_UPTIME_INFO 0x0121
+
+struct ec_response_uptime_info {
+ /*
+ * Number of milliseconds since the last EC boot. Sysjump resets
+ * typically do not restart the EC's time_since_boot epoch.
+ *
+ * WARNING: The EC's sense of time is much less accurate than the AP's
+ * sense of time, in both phase and frequency. This timebase is similar
+ * to CLOCK_MONOTONIC_RAW, but with 1% or more frequency error.
+ */
+ uint32_t time_since_ec_boot_ms;
+
+ /*
+ * Number of times the AP was reset by the EC since the last EC boot.
+ * Note that the AP may be held in reset by the EC during the initial
+ * boot sequence, such that the very first AP boot may count as more
+ * than one here.
+ */
+ uint32_t ap_resets_since_ec_boot;
+
+ /*
+ * The set of flags which describe the EC's most recent reset. See
+ * include/system.h RESET_FLAG_* for details.
+ */
+ uint32_t ec_reset_flags;
+
+ /* Empty log entries have both the cause and timestamp set to zero. */
+ struct ap_reset_log_entry {
+ /*
+ * See include/chipset.h: enum chipset_{reset,shutdown}_reason
+ * for details.
+ */
+ uint16_t reset_cause;
+
+ /* Reserved for protocol growth. */
+ uint16_t reserved;
+
+ /*
+ * The time of the reset's assertion, in milliseconds since the
+ * last EC boot, in the same epoch as time_since_ec_boot_ms.
+ * Set to zero if the log entry is empty.
+ */
+ uint32_t reset_time_ms;
+ } recent_ap_reset[4];
+} __ec_align4;
+
+/*
+ * Add entropy to the device secret (stored in the rollback region).
+ *
+ * Depending on the chip, the operation may take a long time (e.g. to erase
+ * flash), so the commands are asynchronous.
+ */
+#define EC_CMD_ADD_ENTROPY 0x0122
+
+enum add_entropy_action {
+ /* Add entropy to the current secret. */
+ ADD_ENTROPY_ASYNC = 0,
+ /*
+ * Add entropy, and also make sure that the previous secret is erased.
+ * (this can be implemented by adding entropy multiple times until
+ * all rolback blocks have been overwritten).
+ */
+ ADD_ENTROPY_RESET_ASYNC = 1,
+ /* Read back result from the previous operation. */
+ ADD_ENTROPY_GET_RESULT = 2,
+};
+
+struct ec_params_rollback_add_entropy {
+ uint8_t action;
+} __ec_align1;
+
+/*
+ * Perform a single read of a given ADC channel.
+ */
+#define EC_CMD_ADC_READ 0x0123
+
+struct ec_params_adc_read {
+ uint8_t adc_channel;
+} __ec_align1;
+
+struct ec_response_adc_read {
+ int32_t adc_value;
+} __ec_align4;
+
+/*
+ * Read back rollback info
+ */
+#define EC_CMD_ROLLBACK_INFO 0x0124
+
+struct ec_response_rollback_info {
+ int32_t id; /* Incrementing number to indicate which region to use. */
+ int32_t rollback_min_version;
+ int32_t rw_rollback_version;
+} __ec_align4;
+
+
+/* Issue AP reset */
+#define EC_CMD_AP_RESET 0x0125
+
+/*****************************************************************************/
+/* The command range 0x200-0x2FF is reserved for Rotor. */
+
+/*****************************************************************************/
+/*
+ * Reserve a range of host commands for the CR51 firmware.
+ */
+#define EC_CMD_CR51_BASE 0x0300
+#define EC_CMD_CR51_LAST 0x03FF
+
+/*****************************************************************************/
+/* Fingerprint MCU commands: range 0x0400-0x040x */
+
+/* Fingerprint SPI sensor passthru command: prototyping ONLY */
+#define EC_CMD_FP_PASSTHRU 0x0400
+
+#define EC_FP_FLAG_NOT_COMPLETE 0x1
+
+struct ec_params_fp_passthru {
+ uint16_t len; /* Number of bytes to write then read */
+ uint16_t flags; /* EC_FP_FLAG_xxx */
+ uint8_t data[]; /* Data to send */
+} __ec_align2;
+
+/* Configure the Fingerprint MCU behavior */
+#define EC_CMD_FP_MODE 0x0402
+
+/* Put the sensor in its lowest power mode */
+#define FP_MODE_DEEPSLEEP BIT(0)
+/* Wait to see a finger on the sensor */
+#define FP_MODE_FINGER_DOWN BIT(1)
+/* Poll until the finger has left the sensor */
+#define FP_MODE_FINGER_UP BIT(2)
+/* Capture the current finger image */
+#define FP_MODE_CAPTURE BIT(3)
+/* Finger enrollment session on-going */
+#define FP_MODE_ENROLL_SESSION BIT(4)
+/* Enroll the current finger image */
+#define FP_MODE_ENROLL_IMAGE BIT(5)
+/* Try to match the current finger image */
+#define FP_MODE_MATCH BIT(6)
+/* Reset and re-initialize the sensor. */
+#define FP_MODE_RESET_SENSOR BIT(7)
+/* special value: don't change anything just read back current mode */
+#define FP_MODE_DONT_CHANGE BIT(31)
+
+#define FP_VALID_MODES (FP_MODE_DEEPSLEEP | \
+ FP_MODE_FINGER_DOWN | \
+ FP_MODE_FINGER_UP | \
+ FP_MODE_CAPTURE | \
+ FP_MODE_ENROLL_SESSION | \
+ FP_MODE_ENROLL_IMAGE | \
+ FP_MODE_MATCH | \
+ FP_MODE_RESET_SENSOR | \
+ FP_MODE_DONT_CHANGE)
+
+/* Capture types defined in bits [30..28] */
+#define FP_MODE_CAPTURE_TYPE_SHIFT 28
+#define FP_MODE_CAPTURE_TYPE_MASK (0x7 << FP_MODE_CAPTURE_TYPE_SHIFT)
+/*
+ * This enum must remain ordered, if you add new values you must ensure that
+ * FP_CAPTURE_TYPE_MAX is still the last one.
+ */
+enum fp_capture_type {
+ /* Full blown vendor-defined capture (produces 'frame_size' bytes) */
+ FP_CAPTURE_VENDOR_FORMAT = 0,
+ /* Simple raw image capture (produces width x height x bpp bits) */
+ FP_CAPTURE_SIMPLE_IMAGE = 1,
+ /* Self test pattern (e.g. checkerboard) */
+ FP_CAPTURE_PATTERN0 = 2,
+ /* Self test pattern (e.g. inverted checkerboard) */
+ FP_CAPTURE_PATTERN1 = 3,
+ /* Capture for Quality test with fixed contrast */
+ FP_CAPTURE_QUALITY_TEST = 4,
+ /* Capture for pixel reset value test */
+ FP_CAPTURE_RESET_TEST = 5,
+ FP_CAPTURE_TYPE_MAX,
+};
+/* Extracts the capture type from the sensor 'mode' word */
+#define FP_CAPTURE_TYPE(mode) (((mode) & FP_MODE_CAPTURE_TYPE_MASK) \
+ >> FP_MODE_CAPTURE_TYPE_SHIFT)
+
+struct ec_params_fp_mode {
+ uint32_t mode; /* as defined by FP_MODE_ constants */
+} __ec_align4;
+
+struct ec_response_fp_mode {
+ uint32_t mode; /* as defined by FP_MODE_ constants */
+} __ec_align4;
+
+/* Retrieve Fingerprint sensor information */
+#define EC_CMD_FP_INFO 0x0403
+
+/* Number of dead pixels detected on the last maintenance */
+#define FP_ERROR_DEAD_PIXELS(errors) ((errors) & 0x3FF)
+/* Unknown number of dead pixels detected on the last maintenance */
+#define FP_ERROR_DEAD_PIXELS_UNKNOWN (0x3FF)
+/* No interrupt from the sensor */
+#define FP_ERROR_NO_IRQ BIT(12)
+/* SPI communication error */
+#define FP_ERROR_SPI_COMM BIT(13)
+/* Invalid sensor Hardware ID */
+#define FP_ERROR_BAD_HWID BIT(14)
+/* Sensor initialization failed */
+#define FP_ERROR_INIT_FAIL BIT(15)
+
+struct ec_response_fp_info_v0 {
+ /* Sensor identification */
+ uint32_t vendor_id;
+ uint32_t product_id;
+ uint32_t model_id;
+ uint32_t version;
+ /* Image frame characteristics */
+ uint32_t frame_size;
+ uint32_t pixel_format; /* using V4L2_PIX_FMT_ */
+ uint16_t width;
+ uint16_t height;
+ uint16_t bpp;
+ uint16_t errors; /* see FP_ERROR_ flags above */
+} __ec_align4;
+
+struct ec_response_fp_info {
+ /* Sensor identification */
+ uint32_t vendor_id;
+ uint32_t product_id;
+ uint32_t model_id;
+ uint32_t version;
+ /* Image frame characteristics */
+ uint32_t frame_size;
+ uint32_t pixel_format; /* using V4L2_PIX_FMT_ */
+ uint16_t width;
+ uint16_t height;
+ uint16_t bpp;
+ uint16_t errors; /* see FP_ERROR_ flags above */
+ /* Template/finger current information */
+ uint32_t template_size; /* max template size in bytes */
+ uint16_t template_max; /* maximum number of fingers/templates */
+ uint16_t template_valid; /* number of valid fingers/templates */
+ uint32_t template_dirty; /* bitmap of templates with MCU side changes */
+ uint32_t template_version; /* version of the template format */
+} __ec_align4;
+
+/* Get the last captured finger frame or a template content */
+#define EC_CMD_FP_FRAME 0x0404
+
+/* constants defining the 'offset' field which also contains the frame index */
+#define FP_FRAME_INDEX_SHIFT 28
+/* Frame buffer where the captured image is stored */
+#define FP_FRAME_INDEX_RAW_IMAGE 0
+/* First frame buffer holding a template */
+#define FP_FRAME_INDEX_TEMPLATE 1
+#define FP_FRAME_GET_BUFFER_INDEX(offset) ((offset) >> FP_FRAME_INDEX_SHIFT)
+#define FP_FRAME_OFFSET_MASK 0x0FFFFFFF
+
+/* Version of the format of the encrypted templates. */
+#define FP_TEMPLATE_FORMAT_VERSION 3
+
+/* Constants for encryption parameters */
+#define FP_CONTEXT_NONCE_BYTES 12
+#define FP_CONTEXT_USERID_WORDS (32 / sizeof(uint32_t))
+#define FP_CONTEXT_TAG_BYTES 16
+#define FP_CONTEXT_SALT_BYTES 16
+#define FP_CONTEXT_TPM_BYTES 32
+
+struct ec_fp_template_encryption_metadata {
+ /*
+ * Version of the structure format (N=3).
+ */
+ uint16_t struct_version;
+ /* Reserved bytes, set to 0. */
+ uint16_t reserved;
+ /*
+ * The salt is *only* ever used for key derivation. The nonce is unique,
+ * a different one is used for every message.
+ */
+ uint8_t nonce[FP_CONTEXT_NONCE_BYTES];
+ uint8_t salt[FP_CONTEXT_SALT_BYTES];
+ uint8_t tag[FP_CONTEXT_TAG_BYTES];
+};
+
+struct ec_params_fp_frame {
+ /*
+ * The offset contains the template index or FP_FRAME_INDEX_RAW_IMAGE
+ * in the high nibble, and the real offset within the frame in
+ * FP_FRAME_OFFSET_MASK.
+ */
+ uint32_t offset;
+ uint32_t size;
+} __ec_align4;
+
+/* Load a template into the MCU */
+#define EC_CMD_FP_TEMPLATE 0x0405
+
+/* Flag in the 'size' field indicating that the full template has been sent */
+#define FP_TEMPLATE_COMMIT 0x80000000
+
+struct ec_params_fp_template {
+ uint32_t offset;
+ uint32_t size;
+ uint8_t data[];
+} __ec_align4;
+
+/* Clear the current fingerprint user context and set a new one */
+#define EC_CMD_FP_CONTEXT 0x0406
+
+struct ec_params_fp_context {
+ uint32_t userid[FP_CONTEXT_USERID_WORDS];
+} __ec_align4;
+
+#define EC_CMD_FP_STATS 0x0407
+
+#define FPSTATS_CAPTURE_INV BIT(0)
+#define FPSTATS_MATCHING_INV BIT(1)
+
+struct ec_response_fp_stats {
+ uint32_t capture_time_us;
+ uint32_t matching_time_us;
+ uint32_t overall_time_us;
+ struct {
+ uint32_t lo;
+ uint32_t hi;
+ } overall_t0;
+ uint8_t timestamps_invalid;
+ int8_t template_matched;
+} __ec_align2;
+
+#define EC_CMD_FP_SEED 0x0408
+struct ec_params_fp_seed {
+ /*
+ * Version of the structure format (N=3).
+ */
+ uint16_t struct_version;
+ /* Reserved bytes, set to 0. */
+ uint16_t reserved;
+ /* Seed from the TPM. */
+ uint8_t seed[FP_CONTEXT_TPM_BYTES];
+} __ec_align4;
+
+/*****************************************************************************/
+/* Touchpad MCU commands: range 0x0500-0x05FF */
+
+/* Perform touchpad self test */
+#define EC_CMD_TP_SELF_TEST 0x0500
+
+/* Get number of frame types, and the size of each type */
+#define EC_CMD_TP_FRAME_INFO 0x0501
+
+struct ec_response_tp_frame_info {
+ uint32_t n_frames;
+ uint32_t frame_sizes[0];
+} __ec_align4;
+
+/* Create a snapshot of current frame readings */
+#define EC_CMD_TP_FRAME_SNAPSHOT 0x0502
+
+/* Read the frame */
+#define EC_CMD_TP_FRAME_GET 0x0503
+
+struct ec_params_tp_frame_get {
+ uint32_t frame_index;
+ uint32_t offset;
+ uint32_t size;
+} __ec_align4;
+
+/*****************************************************************************/
+/* EC-EC communication commands: range 0x0600-0x06FF */
+
+#define EC_COMM_TEXT_MAX 8
+
+/*
+ * Get battery static information, i.e. information that never changes, or
+ * very infrequently.
+ */
+#define EC_CMD_BATTERY_GET_STATIC 0x0600
+
+/**
+ * struct ec_params_battery_static_info - Battery static info parameters
+ * @index: Battery index.
+ */
+struct ec_params_battery_static_info {
+ uint8_t index;
+} __ec_align_size1;
+
+/**
+ * struct ec_response_battery_static_info - Battery static info response
+ * @design_capacity: Battery Design Capacity (mAh)
+ * @design_voltage: Battery Design Voltage (mV)
+ * @manufacturer: Battery Manufacturer String
+ * @model: Battery Model Number String
+ * @serial: Battery Serial Number String
+ * @type: Battery Type String
+ * @cycle_count: Battery Cycle Count
+ */
+struct ec_response_battery_static_info {
+ uint16_t design_capacity;
+ uint16_t design_voltage;
+ char manufacturer[EC_COMM_TEXT_MAX];
+ char model[EC_COMM_TEXT_MAX];
+ char serial[EC_COMM_TEXT_MAX];
+ char type[EC_COMM_TEXT_MAX];
+ /* TODO(crbug.com/795991): Consider moving to dynamic structure. */
+ uint32_t cycle_count;
+} __ec_align4;
+
+/*
+ * Get battery dynamic information, i.e. information that is likely to change
+ * every time it is read.
+ */
+#define EC_CMD_BATTERY_GET_DYNAMIC 0x0601
+
+/**
+ * struct ec_params_battery_dynamic_info - Battery dynamic info parameters
+ * @index: Battery index.
+ */
+struct ec_params_battery_dynamic_info {
+ uint8_t index;
+} __ec_align_size1;
+
+/**
+ * struct ec_response_battery_dynamic_info - Battery dynamic info response
+ * @actual_voltage: Battery voltage (mV)
+ * @actual_current: Battery current (mA); negative=discharging
+ * @remaining_capacity: Remaining capacity (mAh)
+ * @full_capacity: Capacity (mAh, might change occasionally)
+ * @flags: Flags, see EC_BATT_FLAG_*
+ * @desired_voltage: Charging voltage desired by battery (mV)
+ * @desired_current: Charging current desired by battery (mA)
+ */
+struct ec_response_battery_dynamic_info {
+ int16_t actual_voltage;
+ int16_t actual_current;
+ int16_t remaining_capacity;
+ int16_t full_capacity;
+ int16_t flags;
+ int16_t desired_voltage;
+ int16_t desired_current;
+} __ec_align2;
+
+/*
+ * Control charger chip. Used to control charger chip on the slave.
+ */
+#define EC_CMD_CHARGER_CONTROL 0x0602
+
+/**
+ * struct ec_params_charger_control - Charger control parameters
+ * @max_current: Charger current (mA). Positive to allow base to draw up to
+ * max_current and (possibly) charge battery, negative to request current
+ * from base (OTG).
+ * @otg_voltage: Voltage (mV) to use in OTG mode, ignored if max_current is
+ * >= 0.
+ * @allow_charging: Allow base battery charging (only makes sense if
+ * max_current > 0).
+ */
+struct ec_params_charger_control {
+ int16_t max_current;
+ uint16_t otg_voltage;
+ uint8_t allow_charging;
+} __ec_align_size1;
+
+/*****************************************************************************/
+/*
+ * Reserve a range of host commands for board-specific, experimental, or
+ * special purpose features. These can be (re)used without updating this file.
+ *
+ * CAUTION: Don't go nuts with this. Shipping products should document ALL
+ * their EC commands for easier development, testing, debugging, and support.
+ *
+ * All commands MUST be #defined to be 4-digit UPPER CASE hex values
+ * (e.g., 0x00AB, not 0xab) for CONFIG_HOSTCMD_SECTION_SORTED to work.
+ *
+ * In your experimental code, you may want to do something like this:
+ *
+ * #define EC_CMD_MAGIC_FOO 0x0000
+ * #define EC_CMD_MAGIC_BAR 0x0001
+ * #define EC_CMD_MAGIC_HEY 0x0002
+ *
+ * DECLARE_PRIVATE_HOST_COMMAND(EC_CMD_MAGIC_FOO, magic_foo_handler,
+ * EC_VER_MASK(0);
+ *
+ * DECLARE_PRIVATE_HOST_COMMAND(EC_CMD_MAGIC_BAR, magic_bar_handler,
+ * EC_VER_MASK(0);
+ *
+ * DECLARE_PRIVATE_HOST_COMMAND(EC_CMD_MAGIC_HEY, magic_hey_handler,
+ * EC_VER_MASK(0);
+ */
+#define EC_CMD_BOARD_SPECIFIC_BASE 0x3E00
+#define EC_CMD_BOARD_SPECIFIC_LAST 0x3FFF
+
+/*
+ * Given the private host command offset, calculate the true private host
+ * command value.
+ */
+#define EC_PRIVATE_HOST_COMMAND_VALUE(command) \
+ (EC_CMD_BOARD_SPECIFIC_BASE + (command))
/*****************************************************************************/
/*
@@ -3538,4 +5708,6 @@ struct ec_response_usb_pd_mux_info {
#define EC_LPC_ADDR_OLD_PARAM EC_HOST_CMD_REGION1
#define EC_OLD_PARAM_SIZE EC_HOST_CMD_REGION_SIZE
+
+
#endif /* __CROS_EC_COMMANDS_H */
diff --git a/include/linux/platform_data/wilco-ec.h b/include/linux/platform_data/wilco-ec.h
index 1ff224793c99f9778f803b3fed1d1e4eed70227e..ad03b586a09576549c68f4993c69ac2594842e24 100644
--- a/include/linux/platform_data/wilco-ec.h
+++ b/include/linux/platform_data/wilco-ec.h
@@ -13,12 +13,9 @@
/* Message flags for using the mailbox() interface */
#define WILCO_EC_FLAG_NO_RESPONSE BIT(0) /* EC does not respond */
-#define WILCO_EC_FLAG_EXTENDED_DATA BIT(1) /* EC returns 256 data bytes */
/* Normal commands have a maximum 32 bytes of data */
#define EC_MAILBOX_DATA_SIZE 32
-/* Extended commands have 256 bytes of response data */
-#define EC_MAILBOX_DATA_SIZE_EXTENDED 256
/**
* struct wilco_ec_device - Wilco Embedded Controller handle.
@@ -32,6 +29,7 @@
* @data_size: Size of the data buffer used for EC communication.
* @debugfs_pdev: The child platform_device used by the debugfs sub-driver.
* @rtc_pdev: The child platform_device used by the RTC sub-driver.
+ * @telem_pdev: The child platform_device used by the telemetry sub-driver.
*/
struct wilco_ec_device {
struct device *dev;
@@ -43,6 +41,7 @@ struct wilco_ec_device {
size_t data_size;
struct platform_device *debugfs_pdev;
struct platform_device *rtc_pdev;
+ struct platform_device *telem_pdev;
};
/**
@@ -85,14 +84,12 @@ struct wilco_ec_response {
* enum wilco_ec_msg_type - Message type to select a set of command codes.
* @WILCO_EC_MSG_LEGACY: Legacy EC messages for standard EC behavior.
* @WILCO_EC_MSG_PROPERTY: Get/Set/Sync EC controlled NVRAM property.
- * @WILCO_EC_MSG_TELEMETRY_SHORT: 32 bytes of telemetry data provided by the EC.
- * @WILCO_EC_MSG_TELEMETRY_LONG: 256 bytes of telemetry data provided by the EC.
+ * @WILCO_EC_MSG_TELEMETRY: Request telemetry data from the EC.
*/
enum wilco_ec_msg_type {
WILCO_EC_MSG_LEGACY = 0x00f0,
WILCO_EC_MSG_PROPERTY = 0x00f2,
- WILCO_EC_MSG_TELEMETRY_SHORT = 0x00f5,
- WILCO_EC_MSG_TELEMETRY_LONG = 0x00f6,
+ WILCO_EC_MSG_TELEMETRY = 0x00f5,
};
/**
@@ -123,4 +120,87 @@ struct wilco_ec_message {
*/
int wilco_ec_mailbox(struct wilco_ec_device *ec, struct wilco_ec_message *msg);
+/*
+ * A Property is typically a data item that is stored to NVRAM
+ * by the EC. Each of these data items has an index associated
+ * with it, known as the Property ID (PID). Properties may have
+ * variable lengths, up to a max of WILCO_EC_PROPERTY_MAX_SIZE
+ * bytes. Properties can be simple integers, or they may be more
+ * complex binary data.
+ */
+
+#define WILCO_EC_PROPERTY_MAX_SIZE 4
+
+/**
+ * struct ec_property_set_msg - Message to get or set a property.
+ * @property_id: Which property to get or set.
+ * @length: Number of bytes of |data| that are used.
+ * @data: Actual property data.
+ */
+struct wilco_ec_property_msg {
+ u32 property_id;
+ int length;
+ u8 data[WILCO_EC_PROPERTY_MAX_SIZE];
+};
+
+/**
+ * wilco_ec_get_property() - Retrieve a property from the EC.
+ * @ec: Embedded Controller device.
+ * @prop_msg: Message for request and response.
+ *
+ * The property_id field of |prop_msg| should be filled before calling this
+ * function. The result will be stored in the data and length fields.
+ *
+ * Return: 0 on success, negative error code on failure.
+ */
+int wilco_ec_get_property(struct wilco_ec_device *ec,
+ struct wilco_ec_property_msg *prop_msg);
+
+/**
+ * wilco_ec_set_property() - Store a property on the EC.
+ * @ec: Embedded Controller device.
+ * @prop_msg: Message for request and response.
+ *
+ * The property_id, length, and data fields of |prop_msg| should be
+ * filled before calling this function.
+ *
+ * Return: 0 on success, negative error code on failure.
+ */
+int wilco_ec_set_property(struct wilco_ec_device *ec,
+ struct wilco_ec_property_msg *prop_msg);
+
+/**
+ * wilco_ec_get_byte_property() - Retrieve a byte-size property from the EC.
+ * @ec: Embedded Controller device.
+ * @property_id: Which property to retrieve.
+ * @val: The result value, will be filled by this function.
+ *
+ * Return: 0 on success, negative error code on failure.
+ */
+int wilco_ec_get_byte_property(struct wilco_ec_device *ec, u32 property_id,
+ u8 *val);
+
+/**
+ * wilco_ec_get_byte_property() - Store a byte-size property on the EC.
+ * @ec: Embedded Controller device.
+ * @property_id: Which property to store.
+ * @val: Value to store.
+ *
+ * Return: 0 on success, negative error code on failure.
+ */
+int wilco_ec_set_byte_property(struct wilco_ec_device *ec, u32 property_id,
+ u8 val);
+
+/**
+ * wilco_ec_add_sysfs() - Create sysfs entries
+ * @ec: Wilco EC device
+ *
+ * wilco_ec_remove_sysfs() needs to be called afterwards
+ * to perform the necessary cleanup.
+ *
+ * Return: 0 on success or negative error code on failure.
+ */
+int wilco_ec_add_sysfs(struct wilco_ec_device *ec);
+void wilco_ec_remove_sysfs(struct wilco_ec_device *ec);
+
#endif /* WILCO_EC_H */
diff --git a/sound/soc/codecs/cros_ec_codec.c b/sound/soc/codecs/cros_ec_codec.c
index 0ac3e520653f562f582a91b09d4791aeab81b8b5..85beef265cc8255b6274374a53dbcdd0ac648263 100644
--- a/sound/soc/codecs/cros_ec_codec.c
+++ b/sound/soc/codecs/cros_ec_codec.c
@@ -38,21 +38,21 @@ static const DECLARE_TLV_DB_SCALE(ec_mic_gain_tlv, 0, 100, 0);
static int ec_command_get_gain(struct snd_soc_component *component,
struct ec_param_codec_i2s *param,
- struct ec_response_codec_gain *resp)
+ struct ec_codec_i2s_gain *resp)
{
struct cros_ec_codec_data *codec_data =
snd_soc_component_get_drvdata(component);
struct cros_ec_device *ec_device = codec_data->ec_device;
u8 buffer[sizeof(struct cros_ec_command) +
max(sizeof(struct ec_param_codec_i2s),
- sizeof(struct ec_response_codec_gain))];
+ sizeof(struct ec_codec_i2s_gain))];
struct cros_ec_command *msg = (struct cros_ec_command *)&buffer;
int ret;
msg->version = 0;
msg->command = EC_CMD_CODEC_I2S;
msg->outsize = sizeof(struct ec_param_codec_i2s);
- msg->insize = sizeof(struct ec_response_codec_gain);
+ msg->insize = sizeof(struct ec_codec_i2s_gain);
memcpy(msg->data, param, msg->outsize);
@@ -226,7 +226,7 @@ static int get_ec_mic_gain(struct snd_soc_component *component,
u8 *left, u8 *right)
{
struct ec_param_codec_i2s param;
- struct ec_response_codec_gain resp;
+ struct ec_codec_i2s_gain resp;
int ret;
param.cmd = EC_CODEC_GET_GAIN;