diff --git a/Documentation/devicetree/bindings/rtc/nxp,pcf85063.txt b/Documentation/devicetree/bindings/rtc/nxp,pcf85063.txt
index d3e380ad712d6ce089befccab53b0100252be71b..627bb533eff7ab25813165e87522324adfc5a4d7 100644
--- a/Documentation/devicetree/bindings/rtc/nxp,pcf85063.txt
+++ b/Documentation/devicetree/bindings/rtc/nxp,pcf85063.txt
@@ -1,7 +1,11 @@
* NXP PCF85063 Real Time Clock
Required properties:
-- compatible: Should contain "nxp,pcf85063".
+- compatible: Should one of contain:
+ "nxp,pcf85063",
+ "nxp,pcf85063a",
+ "nxp,pcf85063tp",
+ "microcrystal,rv8263"
- reg: I2C address for chip.
Optional property:
diff --git a/Documentation/devicetree/bindings/rtc/rtc-aspeed.txt b/Documentation/devicetree/bindings/rtc/rtc-aspeed.txt
new file mode 100644
index 0000000000000000000000000000000000000000..2e956b3dc2766353259e028621639f3469316f96
--- /dev/null
+++ b/Documentation/devicetree/bindings/rtc/rtc-aspeed.txt
@@ -0,0 +1,22 @@
+ASPEED BMC RTC
+==============
+
+Required properties:
+ - compatible: should be one of the following
+ * aspeed,ast2400-rtc for the ast2400
+ * aspeed,ast2500-rtc for the ast2500
+ * aspeed,ast2600-rtc for the ast2600
+
+ - reg: physical base address of the controller and length of memory mapped
+ region
+
+ - interrupts: The interrupt number
+
+Example:
+
+ rtc@1e781000 {
+ compatible = "aspeed,ast2400-rtc";
+ reg = <0x1e781000 0x18>;
+ interrupts = <22>;
+ status = "disabled";
+ };
diff --git a/Documentation/devicetree/bindings/rtc/rtc.txt b/Documentation/devicetree/bindings/rtc/rtc.txt
index f4687c68c08c0443297d8c93616fe4ab9d0749aa..a97fc6a9a75e63754c8732c32cb485f9fbea1d7e 100644
--- a/Documentation/devicetree/bindings/rtc/rtc.txt
+++ b/Documentation/devicetree/bindings/rtc/rtc.txt
@@ -69,3 +69,4 @@ ricoh,rv5c386 I2C bus SERIAL INTERFACE REAL-TIME CLOCK IC
ricoh,rv5c387a I2C bus SERIAL INTERFACE REAL-TIME CLOCK IC
sii,s35390a 2-wire CMOS real-time clock
whwave,sd3078 I2C bus SERIAL INTERFACE REAL-TIME CLOCK IC
+xircom,x1205 Xircom X1205 I2C RTC
diff --git a/drivers/rtc/Kconfig b/drivers/rtc/Kconfig
index f933c06bff4f804a3e77408d51fe15606b62e135..7b8e156dbf383f2b033fe45bcc38e6f317de4208 100644
--- a/drivers/rtc/Kconfig
+++ b/drivers/rtc/Kconfig
@@ -439,6 +439,7 @@ config RTC_DRV_PCF8523
config RTC_DRV_PCF85063
tristate "NXP PCF85063"
+ select REGMAP_I2C
help
If you say yes here you get support for the PCF85063 RTC chip
@@ -447,7 +448,6 @@ config RTC_DRV_PCF85063
config RTC_DRV_PCF85363
tristate "NXP PCF85363"
- depends on I2C
select REGMAP_I2C
help
If you say yes here you get support for the PCF85363 RTC chip.
@@ -602,7 +602,6 @@ config RTC_DRV_FM3130
config RTC_DRV_RX8010
tristate "Epson RX8010SJ"
- depends on I2C
help
If you say yes here you get support for the Epson RX8010SJ RTC
chip.
@@ -1432,7 +1431,7 @@ config RTC_DRV_AT91RM9200
config RTC_DRV_AT91SAM9
tristate "AT91SAM9 RTT as RTC"
depends on ARCH_AT91 || COMPILE_TEST
- depends on HAS_IOMEM
+ depends on OF && HAS_IOMEM
select MFD_SYSCON
help
Some AT91SAM9 SoCs provide an RTT (Real Time Timer) block which
@@ -1841,6 +1840,17 @@ config RTC_DRV_RTD119X
If you say yes here, you get support for the RTD1295 SoC
Real Time Clock.
+config RTC_DRV_ASPEED
+ tristate "ASPEED RTC"
+ depends on OF
+ depends on ARCH_ASPEED || COMPILE_TEST
+ help
+ If you say yes here you get support for the ASPEED BMC SoC real time
+ clocks.
+
+ This driver can also be built as a module, if so, the module
+ will be called "rtc-aspeed".
+
comment "HID Sensor RTC drivers"
config RTC_DRV_HID_SENSOR_TIME
@@ -1857,7 +1867,8 @@ config RTC_DRV_HID_SENSOR_TIME
config RTC_DRV_GOLDFISH
tristate "Goldfish Real Time Clock"
- depends on MIPS && (GOLDFISH || COMPILE_TEST)
+ depends on OF && HAS_IOMEM
+ depends on GOLDFISH || COMPILE_TEST
help
Say yes to enable RTC driver for the Goldfish based virtual platform.
diff --git a/drivers/rtc/Makefile b/drivers/rtc/Makefile
index fe3962496685a68a5cbe130e419c6021f052be27..9d997faa2c26476e78841bc4099db2db6b3a3f49 100644
--- a/drivers/rtc/Makefile
+++ b/drivers/rtc/Makefile
@@ -34,6 +34,7 @@ obj-$(CONFIG_RTC_DRV_AC100) += rtc-ac100.o
obj-$(CONFIG_RTC_DRV_ARMADA38X) += rtc-armada38x.o
obj-$(CONFIG_RTC_DRV_AS3722) += rtc-as3722.o
obj-$(CONFIG_RTC_DRV_ASM9260) += rtc-asm9260.o
+obj-$(CONFIG_RTC_DRV_ASPEED) += rtc-aspeed.o
obj-$(CONFIG_RTC_DRV_AT91RM9200)+= rtc-at91rm9200.o
obj-$(CONFIG_RTC_DRV_AT91SAM9) += rtc-at91sam9.o
obj-$(CONFIG_RTC_DRV_AU1XXX) += rtc-au1xxx.o
diff --git a/drivers/rtc/class.c b/drivers/rtc/class.c
index ac93b76f2b118bf8634470ab14d91f600bd48422..0f492b0940b3a276f9354bf55da0f19a2bef62b4 100644
--- a/drivers/rtc/class.c
+++ b/drivers/rtc/class.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0
/*
* RTC subsystem, base class
*
@@ -5,11 +6,7 @@
* Author: Alessandro Zummo <a.zummo@towertech.it>
*
* class skeleton from drivers/hwmon/hwmon.c
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License version 2 as
- * published by the Free Software Foundation.
-*/
+ */
#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
@@ -23,13 +20,13 @@
#include "rtc-core.h"
-
static DEFINE_IDA(rtc_ida);
struct class *rtc_class;
static void rtc_device_release(struct device *dev)
{
struct rtc_device *rtc = to_rtc_device(dev);
+
ida_simple_remove(&rtc_ida, rtc->id);
kfree(rtc);
}
@@ -47,7 +44,6 @@ int rtc_hctosys_ret = -ENODEV;
static struct timespec64 old_rtc, old_system, old_delta;
-
static int rtc_suspend(struct device *dev)
{
struct rtc_device *rtc = to_rtc_device(dev);
@@ -71,7 +67,6 @@ static int rtc_suspend(struct device *dev)
ktime_get_real_ts64(&old_system);
old_rtc.tv_sec = rtc_tm_to_time64(&tm);
-
/*
* To avoid drift caused by repeated suspend/resumes,
* which each can add ~1 second drift error,
@@ -83,7 +78,7 @@ static int rtc_suspend(struct device *dev)
if (delta_delta.tv_sec < -2 || delta_delta.tv_sec >= 2) {
/*
* if delta_delta is too large, assume time correction
- * has occured and set old_delta to the current delta.
+ * has occurred and set old_delta to the current delta.
*/
old_delta = delta;
} else {
@@ -136,7 +131,7 @@ static int rtc_resume(struct device *dev)
* to keep things accurate.
*/
sleep_time = timespec64_sub(sleep_time,
- timespec64_sub(new_system, old_system));
+ timespec64_sub(new_system, old_system));
if (sleep_time.tv_sec >= 0)
timekeeping_inject_sleeptime64(&sleep_time);
@@ -397,9 +392,9 @@ EXPORT_SYMBOL_GPL(__rtc_register_device);
* rtc_register_device instead
*/
struct rtc_device *devm_rtc_device_register(struct device *dev,
- const char *name,
- const struct rtc_class_ops *ops,
- struct module *owner)
+ const char *name,
+ const struct rtc_class_ops *ops,
+ struct module *owner)
{
struct rtc_device *rtc;
int err;
diff --git a/drivers/rtc/dev.c b/drivers/rtc/dev.c
index 1d006ef4bb575be8dba27d2206bfc8b85cbfe74a..84feb2565abd57cf76e6484d0ad201225d0104fd 100644
--- a/drivers/rtc/dev.c
+++ b/drivers/rtc/dev.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0
/*
* RTC subsystem, dev interface
*
@@ -5,11 +6,7 @@
* Author: Alessandro Zummo <a.zummo@towertech.it>
*
* based on arch/arm/common/rtctime.c
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License version 2 as
- * published by the Free Software Foundation.
-*/
+ */
#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
@@ -60,7 +57,7 @@ static void rtc_uie_task(struct work_struct *work)
} else if (rtc->oldsecs != tm.tm_sec) {
num = (tm.tm_sec + 60 - rtc->oldsecs) % 60;
rtc->oldsecs = tm.tm_sec;
- rtc->uie_timer.expires = jiffies + HZ - (HZ/10);
+ rtc->uie_timer.expires = jiffies + HZ - (HZ / 10);
rtc->uie_timer_active = 1;
rtc->uie_task_active = 0;
add_timer(&rtc->uie_timer);
@@ -71,6 +68,7 @@ static void rtc_uie_task(struct work_struct *work)
if (num)
rtc_handle_legacy_irq(rtc, num, RTC_UF);
}
+
static void rtc_uie_timer(struct timer_list *t)
{
struct rtc_device *rtc = from_timer(rtc, t, uie_timer);
@@ -202,14 +200,14 @@ static __poll_t rtc_dev_poll(struct file *file, poll_table *wait)
}
static long rtc_dev_ioctl(struct file *file,
- unsigned int cmd, unsigned long arg)
+ unsigned int cmd, unsigned long arg)
{
int err = 0;
struct rtc_device *rtc = file->private_data;
const struct rtc_class_ops *ops = rtc->ops;
struct rtc_time tm;
struct rtc_wkalrm alarm;
- void __user *uarg = (void __user *) arg;
+ void __user *uarg = (void __user *)arg;
err = mutex_lock_interruptible(&rtc->ops_lock);
if (err)
@@ -233,7 +231,7 @@ static long rtc_dev_ioctl(struct file *file,
case RTC_PIE_ON:
if (rtc->irq_freq > rtc->max_user_freq &&
- !capable(CAP_SYS_RESOURCE))
+ !capable(CAP_SYS_RESOURCE))
err = -EACCES;
break;
}
@@ -390,8 +388,9 @@ static long rtc_dev_ioctl(struct file *file,
err = ops->ioctl(rtc->dev.parent, cmd, arg);
if (err == -ENOIOCTLCMD)
err = -ENOTTY;
- } else
+ } else {
err = -ENOTTY;
+ }
break;
}
@@ -403,6 +402,7 @@ static long rtc_dev_ioctl(struct file *file,
static int rtc_dev_fasync(int fd, struct file *file, int on)
{
struct rtc_device *rtc = file->private_data;
+
return fasync_helper(fd, file, on, &rtc->async_queue);
}
diff --git a/drivers/rtc/hctosys.c b/drivers/rtc/hctosys.c
index ff2092a0d38ca2e9529853931cec457a510b4dfe..a74d0d890600a0b65eeceefee5d2c8d7f537422d 100644
--- a/drivers/rtc/hctosys.c
+++ b/drivers/rtc/hctosys.c
@@ -1,13 +1,10 @@
+// SPDX-License-Identifier: GPL-2.0
/*
* RTC subsystem, initialize system time on startup
*
* Copyright (C) 2005 Tower Technologies
* Author: Alessandro Zummo <a.zummo@towertech.it>
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License version 2 as
- * published by the Free Software Foundation.
-*/
+ */
#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
@@ -33,7 +30,7 @@ static int __init rtc_hctosys(void)
};
struct rtc_device *rtc = rtc_class_open(CONFIG_RTC_HCTOSYS_DEVICE);
- if (rtc == NULL) {
+ if (!rtc) {
pr_info("unable to open rtc device (%s)\n",
CONFIG_RTC_HCTOSYS_DEVICE);
goto err_open;
@@ -44,7 +41,6 @@ static int __init rtc_hctosys(void)
dev_err(rtc->dev.parent,
"hctosys: unable to read the hardware clock\n");
goto err_read;
-
}
tv64.tv_sec = rtc_tm_to_time64(&tm);
diff --git a/drivers/rtc/interface.c b/drivers/rtc/interface.c
index 98d9c87b0d1bd8267def7fff8f862640bfec7d4b..4124f4dd376b33c532e94da4783ea6467186393f 100644
--- a/drivers/rtc/interface.c
+++ b/drivers/rtc/interface.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0
/*
* RTC subsystem, interface functions
*
@@ -5,11 +6,7 @@
* Author: Alessandro Zummo <a.zummo@towertech.it>
*
* based on arch/arm/common/rtctime.c
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License version 2 as
- * published by the Free Software Foundation.
-*/
+ */
#include <linux/rtc.h>
#include <linux/sched.h>
@@ -87,11 +84,12 @@ static int rtc_valid_range(struct rtc_device *rtc, struct rtc_time *tm)
static int __rtc_read_time(struct rtc_device *rtc, struct rtc_time *tm)
{
int err;
- if (!rtc->ops)
+
+ if (!rtc->ops) {
err = -ENODEV;
- else if (!rtc->ops->read_time)
+ } else if (!rtc->ops->read_time) {
err = -EINVAL;
- else {
+ } else {
memset(tm, 0, sizeof(struct rtc_time));
err = rtc->ops->read_time(rtc->dev.parent, tm);
if (err < 0) {
@@ -147,14 +145,7 @@ int rtc_set_time(struct rtc_device *rtc, struct rtc_time *tm)
err = -ENODEV;
else if (rtc->ops->set_time)
err = rtc->ops->set_time(rtc->dev.parent, tm);
- else if (rtc->ops->set_mmss64) {
- time64_t secs64 = rtc_tm_to_time64(tm);
-
- err = rtc->ops->set_mmss64(rtc->dev.parent, secs64);
- } else if (rtc->ops->set_mmss) {
- time64_t secs64 = rtc_tm_to_time64(tm);
- err = rtc->ops->set_mmss(rtc->dev.parent, secs64);
- } else
+ else
err = -EINVAL;
pm_stay_awake(rtc->dev.parent);
@@ -167,7 +158,8 @@ int rtc_set_time(struct rtc_device *rtc, struct rtc_time *tm)
}
EXPORT_SYMBOL_GPL(rtc_set_time);
-static int rtc_read_alarm_internal(struct rtc_device *rtc, struct rtc_wkalrm *alarm)
+static int rtc_read_alarm_internal(struct rtc_device *rtc,
+ struct rtc_wkalrm *alarm)
{
int err;
@@ -175,11 +167,11 @@ static int rtc_read_alarm_internal(struct rtc_device *rtc, struct rtc_wkalrm *al
if (err)
return err;
- if (rtc->ops == NULL)
+ if (!rtc->ops) {
err = -ENODEV;
- else if (!rtc->ops->read_alarm)
+ } else if (!rtc->ops->read_alarm) {
err = -EINVAL;
- else {
+ } else {
alarm->enabled = 0;
alarm->pending = 0;
alarm->time.tm_sec = -1;
@@ -207,7 +199,7 @@ int __rtc_read_alarm(struct rtc_device *rtc, struct rtc_wkalrm *alarm)
int first_time = 1;
time64_t t_now, t_alm;
enum { none, day, month, year } missing = none;
- unsigned days;
+ unsigned int days;
/* The lower level RTC driver may return -1 in some fields,
* creating invalid alarm->time values, for reasons like:
@@ -276,10 +268,10 @@ int __rtc_read_alarm(struct rtc_device *rtc, struct rtc_wkalrm *alarm)
return err;
/* note that tm_sec is a "don't care" value here: */
- } while ( before.tm_min != now.tm_min
- || before.tm_hour != now.tm_hour
- || before.tm_mon != now.tm_mon
- || before.tm_year != now.tm_year);
+ } while (before.tm_min != now.tm_min ||
+ before.tm_hour != now.tm_hour ||
+ before.tm_mon != now.tm_mon ||
+ before.tm_year != now.tm_year);
/* Fill in the missing alarm fields using the timestamp; we
* know there's at least one since alarm->time is invalid.
@@ -296,7 +288,7 @@ int __rtc_read_alarm(struct rtc_device *rtc, struct rtc_wkalrm *alarm)
alarm->time.tm_mday = now.tm_mday;
missing = day;
}
- if ((unsigned)alarm->time.tm_mon >= 12) {
+ if ((unsigned int)alarm->time.tm_mon >= 12) {
alarm->time.tm_mon = now.tm_mon;
if (missing == none)
missing = month;
@@ -321,7 +313,6 @@ int __rtc_read_alarm(struct rtc_device *rtc, struct rtc_wkalrm *alarm)
goto done;
switch (missing) {
-
/* 24 hour rollover ... if it's now 10am Monday, an alarm that
* that will trigger at 5am will do so at 5am Tuesday, which
* could also be in the next month or year. This is a common
@@ -341,14 +332,14 @@ int __rtc_read_alarm(struct rtc_device *rtc, struct rtc_wkalrm *alarm)
case month:
dev_dbg(&rtc->dev, "alarm rollover: %s\n", "month");
do {
- if (alarm->time.tm_mon < 11)
+ if (alarm->time.tm_mon < 11) {
alarm->time.tm_mon++;
- else {
+ } else {
alarm->time.tm_mon = 0;
alarm->time.tm_year++;
}
days = rtc_month_days(alarm->time.tm_mon,
- alarm->time.tm_year);
+ alarm->time.tm_year);
} while (days < alarm->time.tm_mday);
break;
@@ -357,8 +348,8 @@ int __rtc_read_alarm(struct rtc_device *rtc, struct rtc_wkalrm *alarm)
dev_dbg(&rtc->dev, "alarm rollover: %s\n", "year");
do {
alarm->time.tm_year++;
- } while (!is_leap_year(alarm->time.tm_year + 1900)
- && rtc_valid_tm(&alarm->time) != 0);
+ } while (!is_leap_year(alarm->time.tm_year + 1900) &&
+ rtc_valid_tm(&alarm->time) != 0);
break;
default:
@@ -369,7 +360,8 @@ int __rtc_read_alarm(struct rtc_device *rtc, struct rtc_wkalrm *alarm)
done:
if (err)
- dev_warn(&rtc->dev, "invalid alarm value: %ptR\n", &alarm->time);
+ dev_warn(&rtc->dev, "invalid alarm value: %ptR\n",
+ &alarm->time);
return err;
}
@@ -381,11 +373,11 @@ int rtc_read_alarm(struct rtc_device *rtc, struct rtc_wkalrm *alarm)
err = mutex_lock_interruptible(&rtc->ops_lock);
if (err)
return err;
- if (rtc->ops == NULL)
+ if (!rtc->ops) {
err = -ENODEV;
- else if (!rtc->ops->read_alarm)
+ } else if (!rtc->ops->read_alarm) {
err = -EINVAL;
- else {
+ } else {
memset(alarm, 0, sizeof(struct rtc_wkalrm));
alarm->enabled = rtc->aie_timer.enabled;
alarm->time = rtc_ktime_to_tm(rtc->aie_timer.node.expires);
@@ -494,7 +486,6 @@ int rtc_initialize_alarm(struct rtc_device *rtc, struct rtc_wkalrm *alarm)
/* Alarm has to be enabled & in the future for us to enqueue it */
if (alarm->enabled && (rtc_tm_to_ktime(now) <
rtc->aie_timer.node.expires)) {
-
rtc->aie_timer.enabled = 1;
timerqueue_add(&rtc->timerqueue, &rtc->aie_timer.node);
trace_rtc_timer_enqueue(&rtc->aie_timer);
@@ -506,7 +497,9 @@ EXPORT_SYMBOL_GPL(rtc_initialize_alarm);
int rtc_alarm_irq_enable(struct rtc_device *rtc, unsigned int enabled)
{
- int err = mutex_lock_interruptible(&rtc->ops_lock);
+ int err;
+
+ err = mutex_lock_interruptible(&rtc->ops_lock);
if (err)
return err;
@@ -535,7 +528,9 @@ EXPORT_SYMBOL_GPL(rtc_alarm_irq_enable);
int rtc_update_irq_enable(struct rtc_device *rtc, unsigned int enabled)
{
- int err = mutex_lock_interruptible(&rtc->ops_lock);
+ int err;
+
+ err = mutex_lock_interruptible(&rtc->ops_lock);
if (err)
return err;
@@ -564,27 +559,25 @@ int rtc_update_irq_enable(struct rtc_device *rtc, unsigned int enabled)
rtc->uie_rtctimer.node.expires = ktime_add(now, onesec);
rtc->uie_rtctimer.period = ktime_set(1, 0);
err = rtc_timer_enqueue(rtc, &rtc->uie_rtctimer);
- } else
+ } else {
rtc_timer_remove(rtc, &rtc->uie_rtctimer);
+ }
out:
mutex_unlock(&rtc->ops_lock);
#ifdef CONFIG_RTC_INTF_DEV_UIE_EMUL
/*
- * Enable emulation if the driver did not provide
- * the update_irq_enable function pointer or if returned
- * -EINVAL to signal that it has been configured without
- * interrupts or that are not available at the moment.
+ * Enable emulation if the driver returned -EINVAL to signal that it has
+ * been configured without interrupts or they are not available at the
+ * moment.
*/
if (err == -EINVAL)
err = rtc_dev_update_irq_enable_emul(rtc, enabled);
#endif
return err;
-
}
EXPORT_SYMBOL_GPL(rtc_update_irq_enable);
-
/**
* rtc_handle_legacy_irq - AIE, UIE and PIE event hook
* @rtc: pointer to the rtc device
@@ -599,14 +592,13 @@ void rtc_handle_legacy_irq(struct rtc_device *rtc, int num, int mode)
/* mark one irq of the appropriate mode */
spin_lock_irqsave(&rtc->irq_lock, flags);
- rtc->irq_data = (rtc->irq_data + (num << 8)) | (RTC_IRQF|mode);
+ rtc->irq_data = (rtc->irq_data + (num << 8)) | (RTC_IRQF | mode);
spin_unlock_irqrestore(&rtc->irq_lock, flags);
wake_up_interruptible(&rtc->irq_queue);
kill_fasync(&rtc->async_queue, SIGIO, POLL_IN);
}
-
/**
* rtc_aie_update_irq - AIE mode rtctimer hook
* @rtc: pointer to the rtc_device
@@ -618,7 +610,6 @@ void rtc_aie_update_irq(struct rtc_device *rtc)
rtc_handle_legacy_irq(rtc, 1, RTC_AF);
}
-
/**
* rtc_uie_update_irq - UIE mode rtctimer hook
* @rtc: pointer to the rtc_device
@@ -630,7 +621,6 @@ void rtc_uie_update_irq(struct rtc_device *rtc)
rtc_handle_legacy_irq(rtc, 1, RTC_UF);
}
-
/**
* rtc_pie_update_irq - PIE mode hrtimer hook
* @timer: pointer to the pie mode hrtimer
@@ -644,6 +634,7 @@ enum hrtimer_restart rtc_pie_update_irq(struct hrtimer *timer)
struct rtc_device *rtc;
ktime_t period;
int count;
+
rtc = container_of(timer, struct rtc_device, pie_timer);
period = NSEC_PER_SEC / rtc->irq_freq;
@@ -662,7 +653,7 @@ enum hrtimer_restart rtc_pie_update_irq(struct hrtimer *timer)
* Context: any
*/
void rtc_update_irq(struct rtc_device *rtc,
- unsigned long num, unsigned long events)
+ unsigned long num, unsigned long events)
{
if (IS_ERR_OR_NULL(rtc))
return;
@@ -811,6 +802,7 @@ static int rtc_timer_enqueue(struct rtc_device *rtc, struct rtc_timer *timer)
if (!next || ktime_before(timer->node.expires, next->expires)) {
struct rtc_wkalrm alarm;
int err;
+
alarm.time = rtc_ktime_to_tm(timer->node.expires);
alarm.enabled = 1;
err = __rtc_set_alarm(rtc, &alarm);
@@ -851,12 +843,14 @@ static void rtc_alarm_disable(struct rtc_device *rtc)
static void rtc_timer_remove(struct rtc_device *rtc, struct rtc_timer *timer)
{
struct timerqueue_node *next = timerqueue_getnext(&rtc->timerqueue);
+
timerqueue_del(&rtc->timerqueue, &timer->node);
trace_rtc_timer_dequeue(timer);
timer->enabled = 0;
if (next == &timer->node) {
struct rtc_wkalrm alarm;
int err;
+
next = timerqueue_getnext(&rtc->timerqueue);
if (!next) {
rtc_alarm_disable(rtc);
@@ -929,9 +923,9 @@ void rtc_timer_do_work(struct work_struct *work)
alarm.enabled = 1;
reprogram:
err = __rtc_set_alarm(rtc, &alarm);
- if (err == -ETIME)
+ if (err == -ETIME) {
goto again;
- else if (err) {
+ } else if (err) {
if (retry-- > 0)
goto reprogram;
@@ -942,14 +936,14 @@ void rtc_timer_do_work(struct work_struct *work)
dev_err(&rtc->dev, "__rtc_set_alarm: err=%d\n", err);
goto again;
}
- } else
+ } else {
rtc_alarm_disable(rtc);
+ }
pm_relax(rtc->dev.parent);
mutex_unlock(&rtc->ops_lock);
}
-
/* rtc_timer_init - Initializes an rtc_timer
* @timer: timer to be intiialized
* @f: function pointer to be called when timer fires
@@ -975,9 +969,10 @@ void rtc_timer_init(struct rtc_timer *timer, void (*f)(struct rtc_device *r),
* Kernel interface to set an rtc_timer
*/
int rtc_timer_start(struct rtc_device *rtc, struct rtc_timer *timer,
- ktime_t expires, ktime_t period)
+ ktime_t expires, ktime_t period)
{
int ret = 0;
+
mutex_lock(&rtc->ops_lock);
if (timer->enabled)
rtc_timer_remove(rtc, timer);
diff --git a/drivers/rtc/lib.c b/drivers/rtc/lib.c
index 9714cb3d1e29816884557d7696bb20b5d7c3a986..23284580df97ae728287fd23d4a8b672e2a2733d 100644
--- a/drivers/rtc/lib.c
+++ b/drivers/rtc/lib.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0
/*
* rtc and date/time utility functions
*
@@ -5,11 +6,7 @@
* Author: Alessandro Zummo <a.zummo@towertech.it>
*
* based on arch/arm/common/rtctime.c and other bits
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License version 2 as
- * published by the Free Software Foundation.
-*/
+ */
#include <linux/export.h>
#include <linux/rtc.h>
@@ -25,7 +22,7 @@ static const unsigned short rtc_ydays[2][13] = {
{ 0, 31, 60, 91, 121, 152, 182, 213, 244, 274, 305, 335, 366 }
};
-#define LEAPS_THRU_END_OF(y) ((y)/4 - (y)/100 + (y)/400)
+#define LEAPS_THRU_END_OF(y) ((y) / 4 - (y) / 100 + (y) / 400)
/*
* The number of days in the month.
@@ -41,11 +38,10 @@ EXPORT_SYMBOL(rtc_month_days);
*/
int rtc_year_days(unsigned int day, unsigned int month, unsigned int year)
{
- return rtc_ydays[is_leap_year(year)][month] + day-1;
+ return rtc_ydays[is_leap_year(year)][month] + day - 1;
}
EXPORT_SYMBOL(rtc_year_days);
-
/*
* rtc_time64_to_tm - Converts time64_t to rtc_time.
* Convert seconds since 01-01-1970 00:00:00 to Gregorian date.
@@ -97,13 +93,15 @@ EXPORT_SYMBOL(rtc_time64_to_tm);
*/
int rtc_valid_tm(struct rtc_time *tm)
{
- if (tm->tm_year < 70
- || ((unsigned)tm->tm_mon) >= 12
- || tm->tm_mday < 1
- || tm->tm_mday > rtc_month_days(tm->tm_mon, ((unsigned)tm->tm_year + 1900))
- || ((unsigned)tm->tm_hour) >= 24
- || ((unsigned)tm->tm_min) >= 60
- || ((unsigned)tm->tm_sec) >= 60)
+ if (tm->tm_year < 70 ||
+ tm->tm_year > (INT_MAX - 1900) ||
+ ((unsigned int)tm->tm_mon) >= 12 ||
+ tm->tm_mday < 1 ||
+ tm->tm_mday > rtc_month_days(tm->tm_mon,
+ ((unsigned int)tm->tm_year + 1900)) ||
+ ((unsigned int)tm->tm_hour) >= 24 ||
+ ((unsigned int)tm->tm_min) >= 60 ||
+ ((unsigned int)tm->tm_sec) >= 60)
return -EINVAL;
return 0;
@@ -116,7 +114,7 @@ EXPORT_SYMBOL(rtc_valid_tm);
*/
time64_t rtc_tm_to_time64(struct rtc_time *tm)
{
- return mktime64(((unsigned)tm->tm_year + 1900), tm->tm_mon + 1,
+ return mktime64(((unsigned int)tm->tm_year + 1900), tm->tm_mon + 1,
tm->tm_mday, tm->tm_hour, tm->tm_min, tm->tm_sec);
}
EXPORT_SYMBOL(rtc_tm_to_time64);
diff --git a/drivers/rtc/nvmem.c b/drivers/rtc/nvmem.c
index dce518d5e50edd2961cb53ec08ac55a67cbc2ab8..4312096c773873160c583d2efd9d5b99ac646508 100644
--- a/drivers/rtc/nvmem.c
+++ b/drivers/rtc/nvmem.c
@@ -1,11 +1,8 @@
+// SPDX-License-Identifier: GPL-2.0
/*
* RTC subsystem, nvmem interface
*
* Copyright (C) 2017 Alexandre Belloni
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License version 2 as
- * published by the Free Software Foundation.
*/
#include <linux/err.h>
@@ -46,7 +43,7 @@ static int rtc_nvram_register(struct rtc_device *rtc,
{
int err;
- rtc->nvram = kzalloc(sizeof(struct bin_attribute), GFP_KERNEL);
+ rtc->nvram = kzalloc(sizeof(*rtc->nvram), GFP_KERNEL);
if (!rtc->nvram)
return -ENOMEM;
diff --git a/drivers/rtc/proc.c b/drivers/rtc/proc.c
index 4d74e4f4ff30e75468c186eab697ac7b6b889244..73344598fc1bef235f6341d2bcc5f4da3482e9a9 100644
--- a/drivers/rtc/proc.c
+++ b/drivers/rtc/proc.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0
/*
* RTC subsystem, proc interface
*
@@ -5,11 +6,7 @@
* Author: Alessandro Zummo <a.zummo@towertech.it>
*
* based on arch/arm/common/rtctime.c
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License version 2 as
- * published by the Free Software Foundation.
-*/
+ */
#include <linux/module.h>
#include <linux/rtc.h>
@@ -60,17 +57,17 @@ static int rtc_proc_show(struct seq_file *seq, void *offset)
seq_printf(seq, "alrm_time\t: %ptRt\n", &alrm.time);
seq_printf(seq, "alrm_date\t: %ptRd\n", &alrm.time);
seq_printf(seq, "alarm_IRQ\t: %s\n",
- alrm.enabled ? "yes" : "no");
+ alrm.enabled ? "yes" : "no");
seq_printf(seq, "alrm_pending\t: %s\n",
- alrm.pending ? "yes" : "no");
+ alrm.pending ? "yes" : "no");
seq_printf(seq, "update IRQ enabled\t: %s\n",
- (rtc->uie_rtctimer.enabled) ? "yes" : "no");
+ (rtc->uie_rtctimer.enabled) ? "yes" : "no");
seq_printf(seq, "periodic IRQ enabled\t: %s\n",
- (rtc->pie_enabled) ? "yes" : "no");
+ (rtc->pie_enabled) ? "yes" : "no");
seq_printf(seq, "periodic IRQ frequency\t: %d\n",
- rtc->irq_freq);
+ rtc->irq_freq);
seq_printf(seq, "max user IRQ frequency\t: %d\n",
- rtc->max_user_freq);
+ rtc->max_user_freq);
}
seq_printf(seq, "24hr\t\t: yes\n");
@@ -85,7 +82,7 @@ void rtc_proc_add_device(struct rtc_device *rtc)
{
if (is_rtc_hctosys(rtc))
proc_create_single_data("driver/rtc", 0, NULL, rtc_proc_show,
- rtc);
+ rtc);
}
void rtc_proc_del_device(struct rtc_device *rtc)
diff --git a/drivers/rtc/rtc-88pm80x.c b/drivers/rtc/rtc-88pm80x.c
index 1fc48ebd3cd05ebe6a6d00b983a7444eeb773921..e4d5a19fd1c906b261af06e753d26d2ef85ec372 100644
--- a/drivers/rtc/rtc-88pm80x.c
+++ b/drivers/rtc/rtc-88pm80x.c
@@ -1,22 +1,10 @@
+// SPDX-License-Identifier: GPL-2.0
/*
* Real Time Clock driver for Marvell 88PM80x PMIC
*
* Copyright (c) 2012 Marvell International Ltd.
* Wenzeng Chen<wzch@marvell.com>
* Qiao Zhou <zhouqiao@marvell.com>
- *
- * This file is subject to the terms and conditions of the GNU General
- * Public License. See the file "COPYING" in the main directory of this
- * archive for more details.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
#include <linux/kernel.h>
diff --git a/drivers/rtc/rtc-88pm860x.c b/drivers/rtc/rtc-88pm860x.c
index d25282b4a7dd1c8798569e79537f9a0682214a30..73697e4b18a9d4d9d85546a1d807a861966df8d8 100644
--- a/drivers/rtc/rtc-88pm860x.c
+++ b/drivers/rtc/rtc-88pm860x.c
@@ -421,7 +421,7 @@ static int pm860x_rtc_remove(struct platform_device *pdev)
struct pm860x_rtc_info *info = platform_get_drvdata(pdev);
#ifdef VRTC_CALIBRATION
- flush_scheduled_work();
+ cancel_delayed_work_sync(&info->calib_work);
/* disable measurement */
pm860x_set_bits(info->i2c, PM8607_MEAS_EN2, MEAS2_VRTC, 0);
#endif /* VRTC_CALIBRATION */
diff --git a/drivers/rtc/rtc-ab-b5ze-s3.c b/drivers/rtc/rtc-ab-b5ze-s3.c
index 2233601761ac54c098002af6b36887b58058e530..cdad6f00debffe315193496a476fbce55509c116 100644
--- a/drivers/rtc/rtc-ab-b5ze-s3.c
+++ b/drivers/rtc/rtc-ab-b5ze-s3.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0+
/*
* rtc-ab-b5ze-s3 - Driver for Abracon AB-RTCMC-32.768Khz-B5ZE-S3
* I2C RTC / Alarm chip
@@ -10,19 +11,9 @@
*
* This work is based on ISL12057 driver (drivers/rtc/rtc-isl12057.c).
*
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
*/
#include <linux/module.h>
-#include <linux/mutex.h>
#include <linux/rtc.h>
#include <linux/i2c.h>
#include <linux/bcd.h>
@@ -128,7 +119,6 @@
struct abb5zes3_rtc_data {
struct rtc_device *rtc;
struct regmap *regmap;
- struct mutex lock;
int irq;
@@ -138,8 +128,7 @@ struct abb5zes3_rtc_data {
/*
* Try and match register bits w/ fixed null values to see whether we
- * are dealing with an ABB5ZES3. Note: this function is called early
- * during init and hence does need mutex protection.
+ * are dealing with an ABB5ZES3.
*/
static int abb5zes3_i2c_validate_chip(struct regmap *regmap)
{
@@ -230,14 +219,12 @@ static int _abb5zes3_rtc_read_time(struct device *dev, struct rtc_time *tm)
if (ret) {
dev_err(dev, "%s: reading RTC time failed (%d)\n",
__func__, ret);
- goto err;
+ return ret;
}
/* If clock integrity is not guaranteed, do not return a time value */
- if (regs[ABB5ZES3_REG_RTC_SC] & ABB5ZES3_REG_RTC_SC_OSC) {
- ret = -ENODATA;
- goto err;
- }
+ if (regs[ABB5ZES3_REG_RTC_SC] & ABB5ZES3_REG_RTC_SC_OSC)
+ return -ENODATA;
tm->tm_sec = bcd2bin(regs[ABB5ZES3_REG_RTC_SC] & 0x7F);
tm->tm_min = bcd2bin(regs[ABB5ZES3_REG_RTC_MN]);
@@ -255,7 +242,6 @@ static int _abb5zes3_rtc_read_time(struct device *dev, struct rtc_time *tm)
tm->tm_mon = bcd2bin(regs[ABB5ZES3_REG_RTC_MO]) - 1; /* starts at 1 */
tm->tm_year = bcd2bin(regs[ABB5ZES3_REG_RTC_YR]) + 100;
-err:
return ret;
}
@@ -273,12 +259,9 @@ static int abb5zes3_rtc_set_time(struct device *dev, struct rtc_time *tm)
regs[ABB5ZES3_REG_RTC_MO] = bin2bcd(tm->tm_mon + 1);
regs[ABB5ZES3_REG_RTC_YR] = bin2bcd(tm->tm_year - 100);
- mutex_lock(&data->lock);
ret = regmap_bulk_write(data->regmap, ABB5ZES3_REG_RTC_SC,
regs + ABB5ZES3_REG_RTC_SC,
ABB5ZES3_RTC_SEC_LEN);
- mutex_unlock(&data->lock);
-
return ret;
}
@@ -332,38 +315,35 @@ static int _abb5zes3_rtc_read_timer(struct device *dev,
if (ret) {
dev_err(dev, "%s: reading Timer A section failed (%d)\n",
__func__, ret);
- goto err;
+ return ret;
}
/* get current time ... */
ret = _abb5zes3_rtc_read_time(dev, &rtc_tm);
if (ret)
- goto err;
+ return ret;
/* ... convert to seconds ... */
- ret = rtc_tm_to_time(&rtc_tm, &rtc_secs);
- if (ret)
- goto err;
+ rtc_secs = rtc_tm_to_time64(&rtc_tm);
/* ... add remaining timer A time ... */
ret = sec_from_timer_a(&timer_secs, regs[1], regs[2]);
if (ret)
- goto err;
+ return ret;
/* ... and convert back. */
- rtc_time_to_tm(rtc_secs + timer_secs, alarm_tm);
+ rtc_time64_to_tm(rtc_secs + timer_secs, alarm_tm);
ret = regmap_read(data->regmap, ABB5ZES3_REG_CTRL2, ®);
if (ret) {
dev_err(dev, "%s: reading ctrl reg failed (%d)\n",
__func__, ret);
- goto err;
+ return ret;
}
alarm->enabled = !!(reg & ABB5ZES3_REG_CTRL2_WTAIE);
-err:
- return ret;
+ return 0;
}
/* Read alarm currently configured via a RTC alarm registers. */
@@ -382,7 +362,7 @@ static int _abb5zes3_rtc_read_alarm(struct device *dev,
if (ret) {
dev_err(dev, "%s: reading alarm section failed (%d)\n",
__func__, ret);
- goto err;
+ return ret;
}
alarm_tm->tm_sec = 0;
@@ -398,18 +378,13 @@ static int _abb5zes3_rtc_read_alarm(struct device *dev,
*/
ret = _abb5zes3_rtc_read_time(dev, &rtc_tm);
if (ret)
- goto err;
+ return ret;
alarm_tm->tm_year = rtc_tm.tm_year;
alarm_tm->tm_mon = rtc_tm.tm_mon;
- ret = rtc_tm_to_time(&rtc_tm, &rtc_secs);
- if (ret)
- goto err;
-
- ret = rtc_tm_to_time(alarm_tm, &alarm_secs);
- if (ret)
- goto err;
+ rtc_secs = rtc_tm_to_time64(&rtc_tm);
+ alarm_secs = rtc_tm_to_time64(alarm_tm);
if (alarm_secs < rtc_secs) {
if (alarm_tm->tm_mon == 11) {
@@ -424,13 +399,12 @@ static int _abb5zes3_rtc_read_alarm(struct device *dev,
if (ret) {
dev_err(dev, "%s: reading ctrl reg failed (%d)\n",
__func__, ret);
- goto err;
+ return ret;
}
alarm->enabled = !!(reg & ABB5ZES3_REG_CTRL1_AIE);
-err:
- return ret;
+ return 0;
}
/*
@@ -447,12 +421,10 @@ static int abb5zes3_rtc_read_alarm(struct device *dev, struct rtc_wkalrm *alarm)
struct abb5zes3_rtc_data *data = dev_get_drvdata(dev);
int ret;
- mutex_lock(&data->lock);
if (data->timer_alarm)
ret = _abb5zes3_rtc_read_timer(dev, alarm);
else
ret = _abb5zes3_rtc_read_alarm(dev, alarm);
- mutex_unlock(&data->lock);
return ret;
}
@@ -466,33 +438,25 @@ static int _abb5zes3_rtc_set_alarm(struct device *dev, struct rtc_wkalrm *alarm)
{
struct abb5zes3_rtc_data *data = dev_get_drvdata(dev);
struct rtc_time *alarm_tm = &alarm->time;
- unsigned long rtc_secs, alarm_secs;
u8 regs[ABB5ZES3_ALRM_SEC_LEN];
struct rtc_time rtc_tm;
int ret, enable = 1;
- ret = _abb5zes3_rtc_read_time(dev, &rtc_tm);
- if (ret)
- goto err;
-
- ret = rtc_tm_to_time(&rtc_tm, &rtc_secs);
- if (ret)
- goto err;
-
- ret = rtc_tm_to_time(alarm_tm, &alarm_secs);
- if (ret)
- goto err;
-
- /* If alarm time is before current time, disable the alarm */
- if (!alarm->enabled || alarm_secs <= rtc_secs) {
+ if (!alarm->enabled) {
enable = 0;
} else {
+ unsigned long rtc_secs, alarm_secs;
+
/*
* Chip only support alarms up to one month in the future. Let's
* return an error if we get something after that limit.
* Comparison is done by incrementing rtc_tm month field by one
* and checking alarm value is still below.
*/
+ ret = _abb5zes3_rtc_read_time(dev, &rtc_tm);
+ if (ret)
+ return ret;
+
if (rtc_tm.tm_mon == 11) { /* handle year wrapping */
rtc_tm.tm_mon = 0;
rtc_tm.tm_year += 1;
@@ -500,15 +464,13 @@ static int _abb5zes3_rtc_set_alarm(struct device *dev, struct rtc_wkalrm *alarm)
rtc_tm.tm_mon += 1;
}
- ret = rtc_tm_to_time(&rtc_tm, &rtc_secs);
- if (ret)
- goto err;
+ rtc_secs = rtc_tm_to_time64(&rtc_tm);
+ alarm_secs = rtc_tm_to_time64(alarm_tm);
if (alarm_secs > rtc_secs) {
- dev_err(dev, "%s: alarm maximum is one month in the "
- "future (%d)\n", __func__, ret);
- ret = -EINVAL;
- goto err;
+ dev_err(dev, "%s: alarm maximum is one month in the future (%d)\n",
+ __func__, ret);
+ return -EINVAL;
}
}
@@ -526,17 +488,14 @@ static int _abb5zes3_rtc_set_alarm(struct device *dev, struct rtc_wkalrm *alarm)
if (ret < 0) {
dev_err(dev, "%s: writing ALARM section failed (%d)\n",
__func__, ret);
- goto err;
+ return ret;
}
/* Record currently configured alarm is not a timer */
data->timer_alarm = 0;
/* Enable or disable alarm interrupt generation */
- ret = _abb5zes3_rtc_update_alarm(dev, enable);
-
-err:
- return ret;
+ return _abb5zes3_rtc_update_alarm(dev, enable);
}
/*
@@ -557,7 +516,7 @@ static int _abb5zes3_rtc_set_timer(struct device *dev, struct rtc_wkalrm *alarm,
ABB5ZES3_TIMA_SEC_LEN);
if (ret < 0) {
dev_err(dev, "%s: writing timer section failed\n", __func__);
- goto err;
+ return ret;
}
/* Configure Timer A as a watchdog timer */
@@ -570,10 +529,7 @@ static int _abb5zes3_rtc_set_timer(struct device *dev, struct rtc_wkalrm *alarm,
data->timer_alarm = 1;
/* Enable or disable timer interrupt generation */
- ret = _abb5zes3_rtc_update_timer(dev, alarm->enabled);
-
-err:
- return ret;
+ return _abb5zes3_rtc_update_timer(dev, alarm->enabled);
}
/*
@@ -590,31 +546,25 @@ static int abb5zes3_rtc_set_alarm(struct device *dev, struct rtc_wkalrm *alarm)
struct rtc_time rtc_tm;
int ret;
- mutex_lock(&data->lock);
ret = _abb5zes3_rtc_read_time(dev, &rtc_tm);
if (ret)
- goto err;
+ return ret;
- ret = rtc_tm_to_time(&rtc_tm, &rtc_secs);
- if (ret)
- goto err;
-
- ret = rtc_tm_to_time(alarm_tm, &alarm_secs);
- if (ret)
- goto err;
+ rtc_secs = rtc_tm_to_time64(&rtc_tm);
+ alarm_secs = rtc_tm_to_time64(alarm_tm);
/* Let's first disable both the alarm and the timer interrupts */
ret = _abb5zes3_rtc_update_alarm(dev, false);
if (ret < 0) {
dev_err(dev, "%s: unable to disable alarm (%d)\n", __func__,
ret);
- goto err;
+ return ret;
}
ret = _abb5zes3_rtc_update_timer(dev, false);
if (ret < 0) {
dev_err(dev, "%s: unable to disable timer (%d)\n", __func__,
ret);
- goto err;
+ return ret;
}
data->timer_alarm = 0;
@@ -629,9 +579,6 @@ static int abb5zes3_rtc_set_alarm(struct device *dev, struct rtc_wkalrm *alarm)
else
ret = _abb5zes3_rtc_set_alarm(dev, alarm);
- err:
- mutex_unlock(&data->lock);
-
if (ret)
dev_err(dev, "%s: unable to configure alarm (%d)\n", __func__,
ret);
@@ -650,8 +597,7 @@ static inline int _abb5zes3_rtc_battery_low_irq_enable(struct regmap *regmap,
/*
* Check current RTC status and enable/disable what needs to be. Return 0 if
- * everything went ok and a negative value upon error. Note: this function
- * is called early during init and hence does need mutex protection.
+ * everything went ok and a negative value upon error.
*/
static int abb5zes3_rtc_check_setup(struct device *dev)
{
@@ -675,8 +621,9 @@ static int abb5zes3_rtc_check_setup(struct device *dev)
ABB5ZES3_REG_TIM_CLK_COF1 | ABB5ZES3_REG_TIM_CLK_COF2 |
ABB5ZES3_REG_TIM_CLK_TBM | ABB5ZES3_REG_TIM_CLK_TAM);
ret = regmap_update_bits(regmap, ABB5ZES3_REG_TIM_CLK, mask,
- ABB5ZES3_REG_TIM_CLK_COF0 | ABB5ZES3_REG_TIM_CLK_COF1 |
- ABB5ZES3_REG_TIM_CLK_COF2);
+ ABB5ZES3_REG_TIM_CLK_COF0 |
+ ABB5ZES3_REG_TIM_CLK_COF1 |
+ ABB5ZES3_REG_TIM_CLK_COF2);
if (ret < 0) {
dev_err(dev, "%s: unable to initialize clkout register (%d)\n",
__func__, ret);
@@ -729,9 +676,9 @@ static int abb5zes3_rtc_check_setup(struct device *dev)
* switchover flag but not battery low flag. The latter is checked
* later below.
*/
- mask = (ABB5ZES3_REG_CTRL3_PM0 | ABB5ZES3_REG_CTRL3_PM1 |
- ABB5ZES3_REG_CTRL3_PM2 | ABB5ZES3_REG_CTRL3_BLIE |
- ABB5ZES3_REG_CTRL3_BSIE| ABB5ZES3_REG_CTRL3_BSF);
+ mask = (ABB5ZES3_REG_CTRL3_PM0 | ABB5ZES3_REG_CTRL3_PM1 |
+ ABB5ZES3_REG_CTRL3_PM2 | ABB5ZES3_REG_CTRL3_BLIE |
+ ABB5ZES3_REG_CTRL3_BSIE | ABB5ZES3_REG_CTRL3_BSF);
ret = regmap_update_bits(regmap, ABB5ZES3_REG_CTRL3, mask, 0);
if (ret < 0) {
dev_err(dev, "%s: unable to initialize CTRL3 register (%d)\n",
@@ -748,10 +695,8 @@ static int abb5zes3_rtc_check_setup(struct device *dev)
}
if (reg & ABB5ZES3_REG_RTC_SC_OSC) {
- dev_err(dev, "clock integrity not guaranteed. Osc. has stopped "
- "or has been interrupted.\n");
- dev_err(dev, "change battery (if not already done) and "
- "then set time to reset osc. failure flag.\n");
+ dev_err(dev, "clock integrity not guaranteed. Osc. has stopped or has been interrupted.\n");
+ dev_err(dev, "change battery (if not already done) and then set time to reset osc. failure flag.\n");
}
/*
@@ -769,13 +714,12 @@ static int abb5zes3_rtc_check_setup(struct device *dev)
data->battery_low = reg & ABB5ZES3_REG_CTRL3_BLF;
if (data->battery_low) {
- dev_err(dev, "RTC battery is low; please, consider "
- "changing it!\n");
+ dev_err(dev, "RTC battery is low; please, consider changing it!\n");
ret = _abb5zes3_rtc_battery_low_irq_enable(regmap, false);
if (ret)
- dev_err(dev, "%s: disabling battery low interrupt "
- "generation failed (%d)\n", __func__, ret);
+ dev_err(dev, "%s: disabling battery low interrupt generation failed (%d)\n",
+ __func__, ret);
}
return ret;
@@ -788,12 +732,10 @@ static int abb5zes3_rtc_alarm_irq_enable(struct device *dev,
int ret = 0;
if (rtc_data->irq) {
- mutex_lock(&rtc_data->lock);
if (rtc_data->timer_alarm)
ret = _abb5zes3_rtc_update_timer(dev, enable);
else
ret = _abb5zes3_rtc_update_alarm(dev, enable);
- mutex_unlock(&rtc_data->lock);
}
return ret;
@@ -885,49 +827,44 @@ static int abb5zes3_probe(struct i2c_client *client,
if (!i2c_check_functionality(client->adapter, I2C_FUNC_I2C |
I2C_FUNC_SMBUS_BYTE_DATA |
- I2C_FUNC_SMBUS_I2C_BLOCK)) {
- ret = -ENODEV;
- goto err;
- }
+ I2C_FUNC_SMBUS_I2C_BLOCK))
+ return -ENODEV;
regmap = devm_regmap_init_i2c(client, &abb5zes3_rtc_regmap_config);
if (IS_ERR(regmap)) {
ret = PTR_ERR(regmap);
dev_err(dev, "%s: regmap allocation failed: %d\n",
__func__, ret);
- goto err;
+ return ret;
}
ret = abb5zes3_i2c_validate_chip(regmap);
if (ret)
- goto err;
+ return ret;
data = devm_kzalloc(dev, sizeof(*data), GFP_KERNEL);
- if (!data) {
- ret = -ENOMEM;
- goto err;
- }
+ if (!data)
+ return -ENOMEM;
- mutex_init(&data->lock);
data->regmap = regmap;
dev_set_drvdata(dev, data);
ret = abb5zes3_rtc_check_setup(dev);
if (ret)
- goto err;
+ return ret;
data->rtc = devm_rtc_allocate_device(dev);
ret = PTR_ERR_OR_ZERO(data->rtc);
if (ret) {
dev_err(dev, "%s: unable to allocate RTC device (%d)\n",
__func__, ret);
- goto err;
+ return ret;
}
if (client->irq > 0) {
ret = devm_request_threaded_irq(dev, client->irq, NULL,
_abb5zes3_rtc_interrupt,
- IRQF_SHARED|IRQF_ONESHOT,
+ IRQF_SHARED | IRQF_ONESHOT,
DRV_NAME, client);
if (!ret) {
device_init_wakeup(dev, true);
@@ -949,8 +886,8 @@ static int abb5zes3_probe(struct i2c_client *client,
if (!data->battery_low && data->irq) {
ret = _abb5zes3_rtc_battery_low_irq_enable(regmap, true);
if (ret) {
- dev_err(dev, "%s: enabling battery low interrupt "
- "generation failed (%d)\n", __func__, ret);
+ dev_err(dev, "%s: enabling battery low interrupt generation failed (%d)\n",
+ __func__, ret);
goto err;
}
}
@@ -958,7 +895,7 @@ static int abb5zes3_probe(struct i2c_client *client,
ret = rtc_register_device(data->rtc);
err:
- if (ret && data && data->irq)
+ if (ret && data->irq)
device_init_wakeup(dev, false);
return ret;
}
diff --git a/drivers/rtc/rtc-ab3100.c b/drivers/rtc/rtc-ab3100.c
index 821ff52a2222e03f02c7ecc34e8d1bc6de5d18b0..2ed6def90975d345911ffcd35339dca21864b271 100644
--- a/drivers/rtc/rtc-ab3100.c
+++ b/drivers/rtc/rtc-ab3100.c
@@ -1,6 +1,6 @@
+// SPDX-License-Identifier: GPL-2.0
/*
* Copyright (C) 2007-2009 ST-Ericsson AB
- * License terms: GNU General Public License (GPL) version 2
* RTC clock driver for the AB3100 Analog Baseband Chip
* Author: Linus Walleij <linus.walleij@stericsson.com>
*/
@@ -43,12 +43,12 @@
/*
* RTC clock functions and device struct declaration
*/
-static int ab3100_rtc_set_mmss(struct device *dev, time64_t secs)
+static int ab3100_rtc_set_time(struct device *dev, struct rtc_time *tm)
{
u8 regs[] = {AB3100_TI0, AB3100_TI1, AB3100_TI2,
AB3100_TI3, AB3100_TI4, AB3100_TI5};
unsigned char buf[6];
- u64 hw_counter = secs * AB3100_RTC_CLOCK_RATE * 2;
+ u64 hw_counter = rtc_tm_to_time64(tm) * AB3100_RTC_CLOCK_RATE * 2;
int err = 0;
int i;
@@ -192,7 +192,7 @@ static int ab3100_rtc_irq_enable(struct device *dev, unsigned int enabled)
static const struct rtc_class_ops ab3100_rtc_ops = {
.read_time = ab3100_rtc_read_time,
- .set_mmss64 = ab3100_rtc_set_mmss,
+ .set_time = ab3100_rtc_set_time,
.read_alarm = ab3100_rtc_read_alarm,
.set_alarm = ab3100_rtc_set_alarm,
.alarm_irq_enable = ab3100_rtc_irq_enable,
@@ -228,15 +228,17 @@ static int __init ab3100_rtc_probe(struct platform_device *pdev)
/* Ignore any error on this write */
}
- rtc = devm_rtc_device_register(&pdev->dev, "ab3100-rtc",
- &ab3100_rtc_ops, THIS_MODULE);
- if (IS_ERR(rtc)) {
- err = PTR_ERR(rtc);
- return err;
- }
+ rtc = devm_rtc_allocate_device(&pdev->dev);
+ if (IS_ERR(rtc))
+ return PTR_ERR(rtc);
+
+ rtc->ops = &ab3100_rtc_ops;
+ /* 48bit counter at (AB3100_RTC_CLOCK_RATE * 2) */
+ rtc->range_max = U32_MAX;
+
platform_set_drvdata(pdev, rtc);
- return 0;
+ return rtc_register_device(rtc);
}
static struct platform_driver ab3100_rtc_driver = {
diff --git a/drivers/rtc/rtc-abx80x.c b/drivers/rtc/rtc-abx80x.c
index 6ddcad642d1e4caa1a50fc53e64705f1ad279cd1..73830670a41f13b6eb4a5afe09b75f878f11e271 100644
--- a/drivers/rtc/rtc-abx80x.c
+++ b/drivers/rtc/rtc-abx80x.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0
/*
* A driver for the I2C members of the Abracon AB x8xx RTC family,
* and compatible: AB 1805 and AB 0805
@@ -7,10 +8,6 @@
* Author: Philippe De Muyter <phdm@macqel.be>
* Author: Alexandre Belloni <alexandre.belloni@bootlin.com>
*
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License version 2 as
- * published by the Free Software Foundation.
- *
*/
#include <linux/bcd.h>
@@ -404,7 +401,7 @@ static ssize_t autocalibration_store(struct device *dev,
return -EINVAL;
}
- retval = abx80x_rtc_set_autocalibration(dev, autocalibration);
+ retval = abx80x_rtc_set_autocalibration(dev->parent, autocalibration);
return retval ? retval : count;
}
@@ -414,7 +411,7 @@ static ssize_t autocalibration_show(struct device *dev,
{
int autocalibration = 0;
- autocalibration = abx80x_rtc_get_autocalibration(dev);
+ autocalibration = abx80x_rtc_get_autocalibration(dev->parent);
if (autocalibration < 0) {
dev_err(dev, "Failed to read RTC autocalibration\n");
sprintf(buf, "0\n");
@@ -430,7 +427,7 @@ static ssize_t oscillator_store(struct device *dev,
struct device_attribute *attr,
const char *buf, size_t count)
{
- struct i2c_client *client = to_i2c_client(dev);
+ struct i2c_client *client = to_i2c_client(dev->parent);
int retval, flags, rc_mode = 0;
if (strncmp(buf, "rc", 2) == 0) {
@@ -472,7 +469,7 @@ static ssize_t oscillator_show(struct device *dev,
struct device_attribute *attr, char *buf)
{
int rc_mode = 0;
- struct i2c_client *client = to_i2c_client(dev);
+ struct i2c_client *client = to_i2c_client(dev->parent);
rc_mode = abx80x_is_rc_mode(client);
@@ -592,13 +589,6 @@ static int abx80x_dt_trickle_cfg(struct device_node *np)
return (trickle_cfg | i);
}
-static void rtc_calib_remove_sysfs_group(void *_dev)
-{
- struct device *dev = _dev;
-
- sysfs_remove_group(&dev->kobj, &rtc_calib_attr_group);
-}
-
#ifdef CONFIG_WATCHDOG
static inline u8 timeout_bits(unsigned int timeout)
@@ -851,32 +841,14 @@ static int abx80x_probe(struct i2c_client *client,
}
}
- /* Export sysfs entries */
- err = sysfs_create_group(&(&client->dev)->kobj, &rtc_calib_attr_group);
+ err = rtc_add_group(priv->rtc, &rtc_calib_attr_group);
if (err) {
dev_err(&client->dev, "Failed to create sysfs group: %d\n",
err);
return err;
}
- err = devm_add_action_or_reset(&client->dev,
- rtc_calib_remove_sysfs_group,
- &client->dev);
- if (err) {
- dev_err(&client->dev,
- "Failed to add sysfs cleanup action: %d\n",
- err);
- return err;
- }
-
- err = rtc_register_device(priv->rtc);
-
- return err;
-}
-
-static int abx80x_remove(struct i2c_client *client)
-{
- return 0;
+ return rtc_register_device(priv->rtc);
}
static const struct i2c_device_id abx80x_id[] = {
@@ -899,7 +871,6 @@ static struct i2c_driver abx80x_driver = {
.name = "rtc-abx80x",
},
.probe = abx80x_probe,
- .remove = abx80x_remove,
.id_table = abx80x_id,
};
diff --git a/drivers/rtc/rtc-aspeed.c b/drivers/rtc/rtc-aspeed.c
new file mode 100644
index 0000000000000000000000000000000000000000..af3eb676d7c32d122ce4400bb64db82986d3b446
--- /dev/null
+++ b/drivers/rtc/rtc-aspeed.c
@@ -0,0 +1,136 @@
+// SPDX-License-Identifier: GPL-2.0+
+// Copyright 2015 IBM Corp.
+
+#include <linux/module.h>
+#include <linux/of.h>
+#include <linux/platform_device.h>
+#include <linux/rtc.h>
+#include <linux/io.h>
+
+struct aspeed_rtc {
+ struct rtc_device *rtc_dev;
+ void __iomem *base;
+};
+
+#define RTC_TIME 0x00
+#define RTC_YEAR 0x04
+#define RTC_CTRL 0x10
+
+#define RTC_UNLOCK BIT(1)
+#define RTC_ENABLE BIT(0)
+
+static int aspeed_rtc_read_time(struct device *dev, struct rtc_time *tm)
+{
+ struct aspeed_rtc *rtc = dev_get_drvdata(dev);
+ unsigned int cent, year;
+ u32 reg1, reg2;
+
+ if (!(readl(rtc->base + RTC_CTRL) & RTC_ENABLE)) {
+ dev_dbg(dev, "%s failing as rtc disabled\n", __func__);
+ return -EINVAL;
+ }
+
+ do {
+ reg2 = readl(rtc->base + RTC_YEAR);
+ reg1 = readl(rtc->base + RTC_TIME);
+ } while (reg2 != readl(rtc->base + RTC_YEAR));
+
+ tm->tm_mday = (reg1 >> 24) & 0x1f;
+ tm->tm_hour = (reg1 >> 16) & 0x1f;
+ tm->tm_min = (reg1 >> 8) & 0x3f;
+ tm->tm_sec = (reg1 >> 0) & 0x3f;
+
+ cent = (reg2 >> 16) & 0x1f;
+ year = (reg2 >> 8) & 0x7f;
+ tm->tm_mon = ((reg2 >> 0) & 0x0f) - 1;
+ tm->tm_year = year + (cent * 100) - 1900;
+
+ dev_dbg(dev, "%s %ptR", __func__, tm);
+
+ return 0;
+}
+
+static int aspeed_rtc_set_time(struct device *dev, struct rtc_time *tm)
+{
+ struct aspeed_rtc *rtc = dev_get_drvdata(dev);
+ u32 reg1, reg2, ctrl;
+ int year, cent;
+
+ cent = (tm->tm_year + 1900) / 100;
+ year = tm->tm_year % 100;
+
+ reg1 = (tm->tm_mday << 24) | (tm->tm_hour << 16) | (tm->tm_min << 8) |
+ tm->tm_sec;
+
+ reg2 = ((cent & 0x1f) << 16) | ((year & 0x7f) << 8) |
+ ((tm->tm_mon + 1) & 0xf);
+
+ ctrl = readl(rtc->base + RTC_CTRL);
+ writel(ctrl | RTC_UNLOCK, rtc->base + RTC_CTRL);
+
+ writel(reg1, rtc->base + RTC_TIME);
+ writel(reg2, rtc->base + RTC_YEAR);
+
+ /* Re-lock and ensure enable is set now that a time is programmed */
+ writel(ctrl | RTC_ENABLE, rtc->base + RTC_CTRL);
+
+ return 0;
+}
+
+static const struct rtc_class_ops aspeed_rtc_ops = {
+ .read_time = aspeed_rtc_read_time,
+ .set_time = aspeed_rtc_set_time,
+};
+
+static int aspeed_rtc_probe(struct platform_device *pdev)
+{
+ struct aspeed_rtc *rtc;
+ struct resource *res;
+ int ret;
+
+ rtc = devm_kzalloc(&pdev->dev, sizeof(*rtc), GFP_KERNEL);
+ if (!rtc)
+ return -ENOMEM;
+
+ res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
+ rtc->base = devm_ioremap_resource(&pdev->dev, res);
+ if (IS_ERR(rtc->base))
+ return PTR_ERR(rtc->base);
+
+ rtc->rtc_dev = devm_rtc_allocate_device(&pdev->dev);
+ if (IS_ERR(rtc->rtc_dev))
+ return PTR_ERR(rtc->rtc_dev);
+
+ platform_set_drvdata(pdev, rtc);
+
+ rtc->rtc_dev->ops = &aspeed_rtc_ops;
+ rtc->rtc_dev->range_min = RTC_TIMESTAMP_BEGIN_1900;
+ rtc->rtc_dev->range_max = 38814989399LL; /* 3199-12-31 23:59:59 */
+
+ ret = rtc_register_device(rtc->rtc_dev);
+ if (ret)
+ return ret;
+
+ return 0;
+}
+
+static const struct of_device_id aspeed_rtc_match[] = {
+ { .compatible = "aspeed,ast2400-rtc", },
+ { .compatible = "aspeed,ast2500-rtc", },
+ { .compatible = "aspeed,ast2600-rtc", },
+ {}
+};
+MODULE_DEVICE_TABLE(of, aspeed_rtc_match);
+
+static struct platform_driver aspeed_rtc_driver = {
+ .driver = {
+ .name = "aspeed-rtc",
+ .of_match_table = of_match_ptr(aspeed_rtc_match),
+ },
+};
+
+module_platform_driver_probe(aspeed_rtc_driver, aspeed_rtc_probe);
+
+MODULE_DESCRIPTION("ASPEED RTC driver");
+MODULE_AUTHOR("Joel Stanley <joel@jms.id.au>");
+MODULE_LICENSE("GPL");
diff --git a/drivers/rtc/rtc-at91sam9.c b/drivers/rtc/rtc-at91sam9.c
index 1d31c0ae63348eabb3da54619b2c540de80d2c08..4daf3789b97874f061c48e2e4c6118cb99c9d040 100644
--- a/drivers/rtc/rtc-at91sam9.c
+++ b/drivers/rtc/rtc-at91sam9.c
@@ -1,14 +1,10 @@
+// SPDX-License-Identifier: GPL-2.0+
/*
* "RTT as Real Time Clock" driver for AT91SAM9 SoC family
*
* (C) 2007 Michel Benoit
*
* Based on rtc-at91rm9200.c by Rick Bronson
- *
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version
- * 2 of the License, or (at your option) any later version.
*/
#include <linux/clk.h>
@@ -47,21 +43,21 @@
* registers available, likewise usable for more than "RTC" support.
*/
-#define AT91_RTT_MR 0x00 /* Real-time Mode Register */
-#define AT91_RTT_RTPRES (0xffff << 0) /* Real-time Timer Prescaler Value */
-#define AT91_RTT_ALMIEN (1 << 16) /* Alarm Interrupt Enable */
-#define AT91_RTT_RTTINCIEN (1 << 17) /* Real Time Timer Increment Interrupt Enable */
-#define AT91_RTT_RTTRST (1 << 18) /* Real Time Timer Restart */
+#define AT91_RTT_MR 0x00 /* Real-time Mode Register */
+#define AT91_RTT_RTPRES (0xffff << 0) /* Timer Prescaler Value */
+#define AT91_RTT_ALMIEN BIT(16) /* Alarm Interrupt Enable */
+#define AT91_RTT_RTTINCIEN BIT(17) /* Increment Interrupt Enable */
+#define AT91_RTT_RTTRST BIT(18) /* Timer Restart */
-#define AT91_RTT_AR 0x04 /* Real-time Alarm Register */
-#define AT91_RTT_ALMV (0xffffffff) /* Alarm Value */
+#define AT91_RTT_AR 0x04 /* Real-time Alarm Register */
+#define AT91_RTT_ALMV (0xffffffff) /* Alarm Value */
-#define AT91_RTT_VR 0x08 /* Real-time Value Register */
-#define AT91_RTT_CRTV (0xffffffff) /* Current Real-time Value */
+#define AT91_RTT_VR 0x08 /* Real-time Value Register */
+#define AT91_RTT_CRTV (0xffffffff) /* Current Real-time Value */
-#define AT91_RTT_SR 0x0c /* Real-time Status Register */
-#define AT91_RTT_ALMS (1 << 0) /* Real-time Alarm Status */
-#define AT91_RTT_RTTINC (1 << 1) /* Real-time Timer Increment */
+#define AT91_RTT_SR 0x0c /* Real-time Status Register */
+#define AT91_RTT_ALMS BIT(0) /* Alarm Status */
+#define AT91_RTT_RTTINC BIT(1) /* Timer Increment */
/*
* We store ALARM_DISABLED in ALMV to record that no alarm is set.
@@ -69,14 +65,13 @@
*/
#define ALARM_DISABLED ((u32)~0)
-
struct sam9_rtc {
void __iomem *rtt;
struct rtc_device *rtcdev;
u32 imr;
struct regmap *gpbr;
unsigned int gpbr_offset;
- int irq;
+ int irq;
struct clk *sclk;
bool suspended;
unsigned long events;
@@ -122,7 +117,7 @@ static int at91_rtc_readtime(struct device *dev, struct rtc_time *tm)
if (secs != secs2)
secs = rtt_readl(rtc, VR);
- rtc_time_to_tm(offset + secs, tm);
+ rtc_time64_to_tm(offset + secs, tm);
dev_dbg(dev, "%s: %ptR\n", __func__, tm);
@@ -135,15 +130,12 @@ static int at91_rtc_readtime(struct device *dev, struct rtc_time *tm)
static int at91_rtc_settime(struct device *dev, struct rtc_time *tm)
{
struct sam9_rtc *rtc = dev_get_drvdata(dev);
- int err;
u32 offset, alarm, mr;
unsigned long secs;
dev_dbg(dev, "%s: %ptR\n", __func__, tm);
- err = rtc_tm_to_time(tm, &secs);
- if (err != 0)
- return err;
+ secs = rtc_tm_to_time64(tm);
mr = rtt_readl(rtc, MR);
@@ -193,7 +185,7 @@ static int at91_rtc_readalarm(struct device *dev, struct rtc_wkalrm *alrm)
memset(alrm, 0, sizeof(*alrm));
if (alarm != ALARM_DISABLED && offset != 0) {
- rtc_time_to_tm(offset + alarm, tm);
+ rtc_time64_to_tm(offset + alarm, tm);
dev_dbg(dev, "%s: %ptR\n", __func__, tm);
@@ -211,11 +203,8 @@ static int at91_rtc_setalarm(struct device *dev, struct rtc_wkalrm *alrm)
unsigned long secs;
u32 offset;
u32 mr;
- int err;
- err = rtc_tm_to_time(tm, &secs);
- if (err != 0)
- return err;
+ secs = rtc_tm_to_time64(tm);
offset = gpbr_readl(rtc);
if (offset == 0) {
@@ -263,7 +252,7 @@ static int at91_rtc_proc(struct device *dev, struct seq_file *seq)
u32 mr = rtt_readl(rtc, MR);
seq_printf(seq, "update_IRQ\t: %s\n",
- (mr & AT91_RTT_RTTINCIEN) ? "yes" : "no");
+ (mr & AT91_RTT_RTTINCIEN) ? "yes" : "no");
return 0;
}
@@ -299,7 +288,7 @@ static void at91_rtc_flush_events(struct sam9_rtc *rtc)
rtc->events = 0;
pr_debug("%s: num=%ld, events=0x%02lx\n", __func__,
- rtc->events >> 8, rtc->events & 0x000000FF);
+ rtc->events >> 8, rtc->events & 0x000000FF);
}
/*
@@ -340,13 +329,6 @@ static const struct rtc_class_ops at91_rtc_ops = {
.alarm_irq_enable = at91_rtc_alarm_irq_enable,
};
-static const struct regmap_config gpbr_regmap_config = {
- .name = "gpbr",
- .reg_bits = 32,
- .val_bits = 32,
- .reg_stride = 4,
-};
-
/*
* Initialize and install RTC driver
*/
@@ -357,6 +339,7 @@ static int at91_rtc_probe(struct platform_device *pdev)
int ret, irq;
u32 mr;
unsigned int sclk_rate;
+ struct of_phandle_args args;
irq = platform_get_irq(pdev, 0);
if (irq < 0) {
@@ -382,34 +365,14 @@ static int at91_rtc_probe(struct platform_device *pdev)
if (IS_ERR(rtc->rtt))
return PTR_ERR(rtc->rtt);
- if (!pdev->dev.of_node) {
- /*
- * TODO: Remove this code chunk when removing non DT board
- * support. Remember to remove the gpbr_regmap_config
- * variable too.
- */
- void __iomem *gpbr;
-
- r = platform_get_resource(pdev, IORESOURCE_MEM, 1);
- gpbr = devm_ioremap_resource(&pdev->dev, r);
- if (IS_ERR(gpbr))
- return PTR_ERR(gpbr);
-
- rtc->gpbr = regmap_init_mmio(NULL, gpbr,
- &gpbr_regmap_config);
- } else {
- struct of_phandle_args args;
-
- ret = of_parse_phandle_with_fixed_args(pdev->dev.of_node,
- "atmel,rtt-rtc-time-reg", 1, 0,
- &args);
- if (ret)
- return ret;
-
- rtc->gpbr = syscon_node_to_regmap(args.np);
- rtc->gpbr_offset = args.args[0];
- }
+ ret = of_parse_phandle_with_fixed_args(pdev->dev.of_node,
+ "atmel,rtt-rtc-time-reg", 1, 0,
+ &args);
+ if (ret)
+ return ret;
+ rtc->gpbr = syscon_node_to_regmap(args.np);
+ rtc->gpbr_offset = args.args[0];
if (IS_ERR(rtc->gpbr)) {
dev_err(&pdev->dev, "failed to retrieve gpbr regmap, aborting.\n");
return -ENOMEM;
@@ -444,13 +407,15 @@ static int at91_rtc_probe(struct platform_device *pdev)
mr &= ~(AT91_RTT_ALMIEN | AT91_RTT_RTTINCIEN);
rtt_writel(rtc, MR, mr);
- rtc->rtcdev = devm_rtc_device_register(&pdev->dev, pdev->name,
- &at91_rtc_ops, THIS_MODULE);
+ rtc->rtcdev = devm_rtc_allocate_device(&pdev->dev);
if (IS_ERR(rtc->rtcdev)) {
ret = PTR_ERR(rtc->rtcdev);
goto err_clk;
}
+ rtc->rtcdev->ops = &at91_rtc_ops;
+ rtc->rtcdev->range_max = U32_MAX;
+
/* register irq handler after we know what name we'll use */
ret = devm_request_irq(&pdev->dev, rtc->irq, at91_rtc_interrupt,
IRQF_SHARED | IRQF_COND_SUSPEND,
@@ -468,9 +433,9 @@ static int at91_rtc_probe(struct platform_device *pdev)
if (gpbr_readl(rtc) == 0)
dev_warn(&pdev->dev, "%s: SET TIME!\n",
- dev_name(&rtc->rtcdev->dev));
+ dev_name(&rtc->rtcdev->dev));
- return 0;
+ return rtc_register_device(rtc->rtcdev);
err_clk:
clk_disable_unprepare(rtc->sclk);
@@ -528,8 +493,9 @@ static int at91_rtc_suspend(struct device *dev)
/* don't let RTTINC cause wakeups */
if (mr & AT91_RTT_RTTINCIEN)
rtt_writel(rtc, MR, mr & ~AT91_RTT_RTTINCIEN);
- } else
+ } else {
rtt_writel(rtc, MR, mr & ~rtc->imr);
+ }
}
return 0;
@@ -561,13 +527,11 @@ static int at91_rtc_resume(struct device *dev)
static SIMPLE_DEV_PM_OPS(at91_rtc_pm_ops, at91_rtc_suspend, at91_rtc_resume);
-#ifdef CONFIG_OF
static const struct of_device_id at91_rtc_dt_ids[] = {
{ .compatible = "atmel,at91sam9260-rtt" },
{ /* sentinel */ }
};
MODULE_DEVICE_TABLE(of, at91_rtc_dt_ids);
-#endif
static struct platform_driver at91_rtc_driver = {
.probe = at91_rtc_probe,
diff --git a/drivers/rtc/rtc-brcmstb-waketimer.c b/drivers/rtc/rtc-brcmstb-waketimer.c
index f4010a75f2bef728b084ecb18692e38755ce62a9..a193396a81408958f41949ffdd201932adc26695 100644
--- a/drivers/rtc/rtc-brcmstb-waketimer.c
+++ b/drivers/rtc/rtc-brcmstb-waketimer.c
@@ -132,7 +132,7 @@ static int brcmstb_waketmr_gettime(struct device *dev,
wktmr_read(timer, &now);
- rtc_time_to_tm(now.sec, tm);
+ rtc_time64_to_tm(now.sec, tm);
return 0;
}
diff --git a/drivers/rtc/rtc-coh901331.c b/drivers/rtc/rtc-coh901331.c
index 0b232c84f674d950f456fc3810799697fd6d615e..4ac8508371539fa1b92c0e8e7239a73d50b59843 100644
--- a/drivers/rtc/rtc-coh901331.c
+++ b/drivers/rtc/rtc-coh901331.c
@@ -1,6 +1,6 @@
+// SPDX-License-Identifier: GPL-2.0
/*
* Copyright (C) 2007-2009 ST-Ericsson AB
- * License terms: GNU General Public License (GPL) version 2
* Real Time Clock interface for ST-Ericsson AB COH 901 331 RTC.
* Author: Linus Walleij <linus.walleij@stericsson.com>
* Based on rtc-pl031.c by Deepak Saxena <dsaxena@plexity.net>
@@ -80,21 +80,22 @@ static int coh901331_read_time(struct device *dev, struct rtc_time *tm)
clk_enable(rtap->clk);
/* Check if the time is valid */
- if (readl(rtap->virtbase + COH901331_VALID)) {
- rtc_time_to_tm(readl(rtap->virtbase + COH901331_CUR_TIME), tm);
+ if (!readl(rtap->virtbase + COH901331_VALID)) {
clk_disable(rtap->clk);
- return 0;
+ return -EINVAL;
}
+
+ rtc_time64_to_tm(readl(rtap->virtbase + COH901331_CUR_TIME), tm);
clk_disable(rtap->clk);
- return -EINVAL;
+ return 0;
}
-static int coh901331_set_mmss(struct device *dev, unsigned long secs)
+static int coh901331_set_time(struct device *dev, struct rtc_time *tm)
{
struct coh901331_port *rtap = dev_get_drvdata(dev);
clk_enable(rtap->clk);
- writel(secs, rtap->virtbase + COH901331_SET_TIME);
+ writel(rtc_tm_to_time64(tm), rtap->virtbase + COH901331_SET_TIME);
clk_disable(rtap->clk);
return 0;
@@ -105,7 +106,7 @@ static int coh901331_read_alarm(struct device *dev, struct rtc_wkalrm *alarm)
struct coh901331_port *rtap = dev_get_drvdata(dev);
clk_enable(rtap->clk);
- rtc_time_to_tm(readl(rtap->virtbase + COH901331_ALARM), &alarm->time);
+ rtc_time64_to_tm(readl(rtap->virtbase + COH901331_ALARM), &alarm->time);
alarm->pending = readl(rtap->virtbase + COH901331_IRQ_EVENT) & 1U;
alarm->enabled = readl(rtap->virtbase + COH901331_IRQ_MASK) & 1U;
clk_disable(rtap->clk);
@@ -116,9 +117,8 @@ static int coh901331_read_alarm(struct device *dev, struct rtc_wkalrm *alarm)
static int coh901331_set_alarm(struct device *dev, struct rtc_wkalrm *alarm)
{
struct coh901331_port *rtap = dev_get_drvdata(dev);
- unsigned long time;
+ unsigned long time = rtc_tm_to_time64(&alarm->time);
- rtc_tm_to_time(&alarm->time, &time);
clk_enable(rtap->clk);
writel(time, rtap->virtbase + COH901331_ALARM);
writel(alarm->enabled, rtap->virtbase + COH901331_IRQ_MASK);
@@ -143,7 +143,7 @@ static int coh901331_alarm_irq_enable(struct device *dev, unsigned int enabled)
static const struct rtc_class_ops coh901331_ops = {
.read_time = coh901331_read_time,
- .set_mmss = coh901331_set_mmss,
+ .set_time = coh901331_set_time,
.read_alarm = coh901331_read_alarm,
.set_alarm = coh901331_set_alarm,
.alarm_irq_enable = coh901331_alarm_irq_enable,
@@ -188,6 +188,13 @@ static int __init coh901331_probe(struct platform_device *pdev)
return ret;
}
+ rtap->rtc = devm_rtc_allocate_device(&pdev->dev);
+ if (IS_ERR(rtap->rtc))
+ return PTR_ERR(rtap->rtc);
+
+ rtap->rtc->ops = &coh901331_ops;
+ rtap->rtc->range_max = U32_MAX;
+
/* We enable/disable the clock only to assure it works */
ret = clk_prepare_enable(rtap->clk);
if (ret) {
@@ -197,12 +204,10 @@ static int __init coh901331_probe(struct platform_device *pdev)
clk_disable(rtap->clk);
platform_set_drvdata(pdev, rtap);
- rtap->rtc = devm_rtc_device_register(&pdev->dev, "coh901331",
- &coh901331_ops, THIS_MODULE);
- if (IS_ERR(rtap->rtc)) {
- ret = PTR_ERR(rtap->rtc);
+
+ ret = rtc_register_device(rtap->rtc);
+ if (ret)
goto out_no_rtc;
- }
return 0;
diff --git a/drivers/rtc/rtc-da9063.c b/drivers/rtc/rtc-da9063.c
index 69b54e5556c06234c5339431f3149bc923ebcf49..15908d51b1cbbbf16b1d9e650497bb61399ef7b8 100644
--- a/drivers/rtc/rtc-da9063.c
+++ b/drivers/rtc/rtc-da9063.c
@@ -1,15 +1,7 @@
-/* rtc-da9063.c - Real time clock device driver for DA9063
+// SPDX-License-Identifier: GPL-2.0+
+/*
+ * Real time clock device driver for DA9063
* Copyright (C) 2013-2015 Dialog Semiconductor Ltd.
- *
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
*/
#include <linux/delay.h>
@@ -247,8 +239,8 @@ static int da9063_rtc_read_time(struct device *dev, struct rtc_time *tm)
da9063_data_to_tm(data, tm, rtc);
- rtc_tm_to_time(tm, &tm_secs);
- rtc_tm_to_time(&rtc->alarm_time, &al_secs);
+ tm_secs = rtc_tm_to_time64(tm);
+ al_secs = rtc_tm_to_time64(&rtc->alarm_time);
/* handle the rtc synchronisation delay */
if (rtc->rtc_sync == true && al_secs - tm_secs == 1)
@@ -472,11 +464,14 @@ static int da9063_rtc_probe(struct platform_device *pdev)
platform_set_drvdata(pdev, rtc);
- rtc->rtc_dev = devm_rtc_device_register(&pdev->dev, DA9063_DRVNAME_RTC,
- &da9063_rtc_ops, THIS_MODULE);
+ rtc->rtc_dev = devm_rtc_allocate_device(&pdev->dev);
if (IS_ERR(rtc->rtc_dev))
return PTR_ERR(rtc->rtc_dev);
+ rtc->rtc_dev->ops = &da9063_rtc_ops;
+ rtc->rtc_dev->range_min = RTC_TIMESTAMP_BEGIN_2000;
+ rtc->rtc_dev->range_max = RTC_TIMESTAMP_END_2063;
+
da9063_data_to_tm(data, &rtc->alarm_time, rtc);
rtc->rtc_sync = false;
@@ -496,7 +491,7 @@ static int da9063_rtc_probe(struct platform_device *pdev)
dev_err(&pdev->dev, "Failed to request ALARM IRQ %d: %d\n",
irq_alarm, ret);
- return ret;
+ return rtc_register_device(rtc->rtc_dev);
}
static struct platform_driver da9063_rtc_driver = {
diff --git a/drivers/rtc/rtc-digicolor.c b/drivers/rtc/rtc-digicolor.c
index b253bf1b35314776ee3df0b9fc68c7c2f544ce78..0aecc3f8e721d97dbcb81620110a9cc1a167bb76 100644
--- a/drivers/rtc/rtc-digicolor.c
+++ b/drivers/rtc/rtc-digicolor.c
@@ -1,14 +1,10 @@
+// SPDX-License-Identifier: GPL-2.0+
/*
* Real Time Clock driver for Conexant Digicolor
*
* Copyright (C) 2015 Paradox Innovation Ltd.
*
* Author: Baruch Siach <baruch@tkos.co.il>
- *
- * This program is free software; you can redistribute it and/or modify it
- * under the terms of the GNU General Public License as published by the
- * Free Software Foundation; either version 2 of the License, or (at your
- * option) any later version.
*/
#include <linux/io.h>
@@ -106,11 +102,11 @@ static int dc_rtc_read_time(struct device *dev, struct rtc_time *tm)
return 0;
}
-static int dc_rtc_set_mmss(struct device *dev, unsigned long secs)
+static int dc_rtc_set_time(struct device *dev, struct rtc_time *tm)
{
struct dc_rtc *rtc = dev_get_drvdata(dev);
- return dc_rtc_write(rtc, secs);
+ return dc_rtc_write(rtc, rtc_tm_to_time64(tm));
}
static int dc_rtc_read_alarm(struct device *dev, struct rtc_wkalrm *alarm)
@@ -161,7 +157,7 @@ static int dc_rtc_alarm_irq_enable(struct device *dev, unsigned int enabled)
static const struct rtc_class_ops dc_rtc_ops = {
.read_time = dc_rtc_read_time,
- .set_mmss = dc_rtc_set_mmss,
+ .set_time = dc_rtc_set_time,
.read_alarm = dc_rtc_read_alarm,
.set_alarm = dc_rtc_set_alarm,
.alarm_irq_enable = dc_rtc_alarm_irq_enable,
@@ -192,6 +188,10 @@ static int __init dc_rtc_probe(struct platform_device *pdev)
if (IS_ERR(rtc->regs))
return PTR_ERR(rtc->regs);
+ rtc->rtc_dev = devm_rtc_allocate_device(&pdev->dev);
+ if (IS_ERR(rtc->rtc_dev))
+ return PTR_ERR(rtc->rtc_dev);
+
irq = platform_get_irq(pdev, 0);
if (irq < 0)
return irq;
@@ -200,12 +200,11 @@ static int __init dc_rtc_probe(struct platform_device *pdev)
return ret;
platform_set_drvdata(pdev, rtc);
- rtc->rtc_dev = devm_rtc_device_register(&pdev->dev, pdev->name,
- &dc_rtc_ops, THIS_MODULE);
- if (IS_ERR(rtc->rtc_dev))
- return PTR_ERR(rtc->rtc_dev);
- return 0;
+ rtc->rtc_dev->ops = &dc_rtc_ops;
+ rtc->rtc_dev->range_max = U32_MAX;
+
+ return rtc_register_device(rtc->rtc_dev);
}
static const struct of_device_id dc_dt_ids[] = {
diff --git a/drivers/rtc/rtc-dm355evm.c b/drivers/rtc/rtc-dm355evm.c
index 97d8259b94940f20b9a11193ba2bd038c1ba5878..cd947a20843b360f4b09d962a55448eac41b2180 100644
--- a/drivers/rtc/rtc-dm355evm.c
+++ b/drivers/rtc/rtc-dm355evm.c
@@ -1,12 +1,8 @@
+// SPDX-License-Identifier: GPL-2.0+
/*
* rtc-dm355evm.c - access battery-backed counter in MSP430 firmware
*
* Copyright (c) 2008 by David Brownell
- *
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version
- * 2 of the License, or (at your option) any later version.
*/
#include <linux/kernel.h>
#include <linux/init.h>
@@ -78,7 +74,7 @@ static int dm355evm_rtc_read_time(struct device *dev, struct rtc_time *tm)
dev_dbg(dev, "read timestamp %08x\n", time.value);
- rtc_time_to_tm(le32_to_cpu(time.value), tm);
+ rtc_time64_to_tm(le32_to_cpu(time.value), tm);
return 0;
}
@@ -88,7 +84,7 @@ static int dm355evm_rtc_set_time(struct device *dev, struct rtc_time *tm)
unsigned long value;
int status;
- rtc_tm_to_time(tm, &value);
+ value = rtc_tm_to_time64(tm);
time.value = cpu_to_le32(value);
dev_dbg(dev, "write timestamp %08x\n", time.value);
@@ -127,16 +123,16 @@ static int dm355evm_rtc_probe(struct platform_device *pdev)
{
struct rtc_device *rtc;
- rtc = devm_rtc_device_register(&pdev->dev, pdev->name,
- &dm355evm_rtc_ops, THIS_MODULE);
- if (IS_ERR(rtc)) {
- dev_err(&pdev->dev, "can't register RTC device, err %ld\n",
- PTR_ERR(rtc));
+ rtc = devm_rtc_allocate_device(&pdev->dev);
+ if (IS_ERR(rtc))
return PTR_ERR(rtc);
- }
+
platform_set_drvdata(pdev, rtc);
- return 0;
+ rtc->ops = &dm355evm_rtc_ops;
+ rtc->range_max = U32_MAX;
+
+ return rtc_register_device(rtc);
}
/*
diff --git a/drivers/rtc/rtc-ds1672.c b/drivers/rtc/rtc-ds1672.c
index b1ebca099b0dffb064d59c8dfa8821f55374f48c..e9e8d02743ee516a033ab18b5e39d045669f74b7 100644
--- a/drivers/rtc/rtc-ds1672.c
+++ b/drivers/rtc/rtc-ds1672.c
@@ -1,12 +1,9 @@
+// SPDX-License-Identifier: GPL-2.0
/*
* An rtc/i2c driver for the Dallas DS1672
* Copyright 2005-06 Tower Technologies
*
* Author: Alessandro Zummo <a.zummo@towertech.it>
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License version 2 as
- * published by the Free Software Foundation.
*/
#include <linux/i2c.h>
@@ -21,17 +18,16 @@
#define DS1672_REG_CONTROL_EOSC 0x80
-static struct i2c_driver ds1672_driver;
-
/*
* In the routines that deal directly with the ds1672 hardware, we use
* rtc_time -- month 0-11, hour 0-23, yr = calendar year-epoch
- * Epoch is initialized as 2000. Time is set to UTC.
+ * Time is set to UTC.
*/
-static int ds1672_get_datetime(struct i2c_client *client, struct rtc_time *tm)
+static int ds1672_read_time(struct device *dev, struct rtc_time *tm)
{
+ struct i2c_client *client = to_i2c_client(dev);
unsigned long time;
- unsigned char addr = DS1672_REG_CNT_BASE;
+ unsigned char addr = DS1672_REG_CONTROL;
unsigned char buf[4];
struct i2c_msg msgs[] = {
@@ -43,11 +39,25 @@ static int ds1672_get_datetime(struct i2c_client *client, struct rtc_time *tm)
{/* read date */
.addr = client->addr,
.flags = I2C_M_RD,
- .len = 4,
+ .len = 1,
.buf = buf
},
};
+ /* read control register */
+ if ((i2c_transfer(client->adapter, &msgs[0], 2)) != 2) {
+ dev_warn(&client->dev, "Unable to read the control register\n");
+ return -EIO;
+ }
+
+ if (buf[0] & DS1672_REG_CONTROL_EOSC) {
+ dev_warn(&client->dev, "Oscillator not enabled. Set time to enable.\n");
+ return -EINVAL;
+ }
+
+ addr = DS1672_REG_CNT_BASE;
+ msgs[1].len = 4;
+
/* read date registers */
if ((i2c_transfer(client->adapter, &msgs[0], 2)) != 2) {
dev_err(&client->dev, "%s: read error\n", __func__);
@@ -61,20 +71,19 @@ static int ds1672_get_datetime(struct i2c_client *client, struct rtc_time *tm)
time = ((unsigned long)buf[3] << 24) | (buf[2] << 16) |
(buf[1] << 8) | buf[0];
- rtc_time_to_tm(time, tm);
+ rtc_time64_to_tm(time, tm);
- dev_dbg(&client->dev, "%s: tm is secs=%d, mins=%d, hours=%d, "
- "mday=%d, mon=%d, year=%d, wday=%d\n",
- __func__, tm->tm_sec, tm->tm_min, tm->tm_hour,
- tm->tm_mday, tm->tm_mon, tm->tm_year, tm->tm_wday);
+ dev_dbg(&client->dev, "%s: tm is %ptR\n", __func__, tm);
return 0;
}
-static int ds1672_set_mmss(struct i2c_client *client, unsigned long secs)
+static int ds1672_set_time(struct device *dev, struct rtc_time *tm)
{
+ struct i2c_client *client = to_i2c_client(dev);
int xfer;
unsigned char buf[6];
+ unsigned long secs = rtc_tm_to_time64(tm);
buf[0] = DS1672_REG_CNT_BASE;
buf[1] = secs & 0x000000FF;
@@ -92,71 +101,15 @@ static int ds1672_set_mmss(struct i2c_client *client, unsigned long secs)
return 0;
}
-static int ds1672_rtc_read_time(struct device *dev, struct rtc_time *tm)
-{
- return ds1672_get_datetime(to_i2c_client(dev), tm);
-}
-
-static int ds1672_rtc_set_mmss(struct device *dev, unsigned long secs)
-{
- return ds1672_set_mmss(to_i2c_client(dev), secs);
-}
-
-static int ds1672_get_control(struct i2c_client *client, u8 *status)
-{
- unsigned char addr = DS1672_REG_CONTROL;
-
- struct i2c_msg msgs[] = {
- {/* setup read ptr */
- .addr = client->addr,
- .len = 1,
- .buf = &addr
- },
- {/* read control */
- .addr = client->addr,
- .flags = I2C_M_RD,
- .len = 1,
- .buf = status
- },
- };
-
- /* read control register */
- if ((i2c_transfer(client->adapter, &msgs[0], 2)) != 2) {
- dev_err(&client->dev, "%s: read error\n", __func__);
- return -EIO;
- }
-
- return 0;
-}
-
-/* following are the sysfs callback functions */
-static ssize_t show_control(struct device *dev, struct device_attribute *attr,
- char *buf)
-{
- struct i2c_client *client = to_i2c_client(dev);
- u8 control;
- int err;
-
- err = ds1672_get_control(client, &control);
- if (err)
- return err;
-
- return sprintf(buf, "%s\n", (control & DS1672_REG_CONTROL_EOSC)
- ? "disabled" : "enabled");
-}
-
-static DEVICE_ATTR(control, S_IRUGO, show_control, NULL);
-
static const struct rtc_class_ops ds1672_rtc_ops = {
- .read_time = ds1672_rtc_read_time,
- .set_mmss = ds1672_rtc_set_mmss,
+ .read_time = ds1672_read_time,
+ .set_time = ds1672_set_time,
};
static int ds1672_probe(struct i2c_client *client,
const struct i2c_device_id *id)
{
int err = 0;
- u8 control;
struct rtc_device *rtc;
dev_dbg(&client->dev, "%s\n", __func__);
@@ -164,29 +117,21 @@ static int ds1672_probe(struct i2c_client *client,
if (!i2c_check_functionality(client->adapter, I2C_FUNC_I2C))
return -ENODEV;
- rtc = devm_rtc_device_register(&client->dev, ds1672_driver.driver.name,
- &ds1672_rtc_ops, THIS_MODULE);
-
+ rtc = devm_rtc_allocate_device(&client->dev);
if (IS_ERR(rtc))
return PTR_ERR(rtc);
- i2c_set_clientdata(client, rtc);
+ rtc->ops = &ds1672_rtc_ops;
+ rtc->range_max = U32_MAX;
- /* read control register */
- err = ds1672_get_control(client, &control);
- if (err) {
- dev_warn(&client->dev, "Unable to read the control register\n");
- }
+ err = rtc_register_device(rtc);
+ if (err)
+ return err;
- if (control & DS1672_REG_CONTROL_EOSC)
- dev_warn(&client->dev, "Oscillator not enabled. "
- "Set time to enable.\n");
+ if (IS_ERR(rtc))
+ return PTR_ERR(rtc);
- /* Register sysfs hooks */
- err = device_create_file(&client->dev, &dev_attr_control);
- if (err)
- dev_err(&client->dev, "Unable to create sysfs entry: %s\n",
- dev_attr_control.attr.name);
+ i2c_set_clientdata(client, rtc);
return 0;
}
diff --git a/drivers/rtc/rtc-ds1685.c b/drivers/rtc/rtc-ds1685.c
index 2710f2594c42a7bce1ee0aa3fb53b7c9a8fb5b2e..5f4328524183c7bed767e3d5d728dfe9c8fa47bc 100644
--- a/drivers/rtc/rtc-ds1685.c
+++ b/drivers/rtc/rtc-ds1685.c
@@ -191,42 +191,6 @@ ds1685_rtc_end_data_access(struct ds1685_priv *rtc)
(rtc->read(rtc, RTC_CTRL_B) & ~(RTC_CTRL_B_SET)));
}
-/**
- * ds1685_rtc_begin_ctrl_access - prepare the rtc for ctrl access.
- * @rtc: pointer to the ds1685 rtc structure.
- * @flags: irq flags variable for spin_lock_irqsave.
- *
- * This takes several steps to prepare the rtc for access to read just the
- * control registers:
- * - Sets a spinlock on the rtc IRQ.
- * - Switches the rtc to bank 1. This allows access to the two extended
- * control registers.
- *
- * Only use this where you are certain another lock will not be held.
- */
-static inline void
-ds1685_rtc_begin_ctrl_access(struct ds1685_priv *rtc, unsigned long *flags)
-{
- spin_lock_irqsave(&rtc->lock, *flags);
- ds1685_rtc_switch_to_bank1(rtc);
-}
-
-/**
- * ds1685_rtc_end_ctrl_access - end ctrl access on the rtc.
- * @rtc: pointer to the ds1685 rtc structure.
- * @flags: irq flags variable for spin_unlock_irqrestore.
- *
- * This ends what was started by ds1685_rtc_begin_ctrl_access:
- * - Switches the rtc back to bank 0.
- * - Unsets the spinlock on the rtc IRQ.
- */
-static inline void
-ds1685_rtc_end_ctrl_access(struct ds1685_priv *rtc, unsigned long flags)
-{
- ds1685_rtc_switch_to_bank0(rtc);
- spin_unlock_irqrestore(&rtc->lock, flags);
-}
-
/**
* ds1685_rtc_get_ssn - retrieve the silicon serial number.
* @rtc: pointer to the ds1685 rtc structure.
@@ -546,10 +510,6 @@ static int
ds1685_rtc_alarm_irq_enable(struct device *dev, unsigned int enabled)
{
struct ds1685_priv *rtc = dev_get_drvdata(dev);
- unsigned long flags = 0;
-
- /* Enable/disable the Alarm IRQ-Enable flag. */
- spin_lock_irqsave(&rtc->lock, flags);
/* Flip the requisite interrupt-enable bit. */
if (enabled)
@@ -561,7 +521,6 @@ ds1685_rtc_alarm_irq_enable(struct device *dev, unsigned int enabled)
/* Read Control C to clear all the flag bits. */
rtc->read(rtc, RTC_CTRL_C);
- spin_unlock_irqrestore(&rtc->lock, flags);
return 0;
}
@@ -569,98 +528,18 @@ ds1685_rtc_alarm_irq_enable(struct device *dev, unsigned int enabled)
/* ----------------------------------------------------------------------- */
-/* IRQ handler & workqueue. */
-
-/**
- * ds1685_rtc_irq_handler - IRQ handler.
- * @irq: IRQ number.
- * @dev_id: platform device pointer.
- */
-static irqreturn_t
-ds1685_rtc_irq_handler(int irq, void *dev_id)
-{
- struct platform_device *pdev = dev_id;
- struct ds1685_priv *rtc = platform_get_drvdata(pdev);
- u8 ctrlb, ctrlc;
- unsigned long events = 0;
- u8 num_irqs = 0;
-
- /* Abort early if the device isn't ready yet (i.e., DEBUG_SHIRQ). */
- if (unlikely(!rtc))
- return IRQ_HANDLED;
-
- /* Ctrlb holds the interrupt-enable bits and ctrlc the flag bits. */
- spin_lock(&rtc->lock);
- ctrlb = rtc->read(rtc, RTC_CTRL_B);
- ctrlc = rtc->read(rtc, RTC_CTRL_C);
-
- /* Is the IRQF bit set? */
- if (likely(ctrlc & RTC_CTRL_C_IRQF)) {
- /*
- * We need to determine if it was one of the standard
- * events: PF, AF, or UF. If so, we handle them and
- * update the RTC core.
- */
- if (likely(ctrlc & RTC_CTRL_B_PAU_MASK)) {
- events = RTC_IRQF;
-
- /* Check for a periodic interrupt. */
- if ((ctrlb & RTC_CTRL_B_PIE) &&
- (ctrlc & RTC_CTRL_C_PF)) {
- events |= RTC_PF;
- num_irqs++;
- }
-
- /* Check for an alarm interrupt. */
- if ((ctrlb & RTC_CTRL_B_AIE) &&
- (ctrlc & RTC_CTRL_C_AF)) {
- events |= RTC_AF;
- num_irqs++;
- }
-
- /* Check for an update interrupt. */
- if ((ctrlb & RTC_CTRL_B_UIE) &&
- (ctrlc & RTC_CTRL_C_UF)) {
- events |= RTC_UF;
- num_irqs++;
- }
-
- rtc_update_irq(rtc->dev, num_irqs, events);
- } else {
- /*
- * One of the "extended" interrupts was received that
- * is not recognized by the RTC core. These need to
- * be handled in task context as they can call other
- * functions and the time spent in irq context needs
- * to be minimized. Schedule them into a workqueue
- * and inform the RTC core that the IRQs were handled.
- */
- spin_unlock(&rtc->lock);
- schedule_work(&rtc->work);
- rtc_update_irq(rtc->dev, 0, 0);
- return IRQ_HANDLED;
- }
- }
- spin_unlock(&rtc->lock);
-
- return events ? IRQ_HANDLED : IRQ_NONE;
-}
+/* IRQ handler */
/**
- * ds1685_rtc_work_queue - work queue handler.
- * @work: work_struct containing data to work on in task context.
+ * ds1685_rtc_extended_irq - take care of extended interrupts
+ * @rtc: pointer to the ds1685 rtc structure.
+ * @pdev: platform device pointer.
*/
static void
-ds1685_rtc_work_queue(struct work_struct *work)
+ds1685_rtc_extended_irq(struct ds1685_priv *rtc, struct platform_device *pdev)
{
- struct ds1685_priv *rtc = container_of(work,
- struct ds1685_priv, work);
- struct platform_device *pdev = to_platform_device(&rtc->dev->dev);
- struct mutex *rtc_mutex = &rtc->dev->ops_lock;
u8 ctrl4a, ctrl4b;
- mutex_lock(rtc_mutex);
-
ds1685_rtc_switch_to_bank1(rtc);
ctrl4a = rtc->read(rtc, RTC_EXT_CTRL_4A);
ctrl4b = rtc->read(rtc, RTC_EXT_CTRL_4B);
@@ -739,8 +618,76 @@ ds1685_rtc_work_queue(struct work_struct *work)
"RAM-Clear IRQ just occurred!\n");
}
ds1685_rtc_switch_to_bank0(rtc);
+}
+
+/**
+ * ds1685_rtc_irq_handler - IRQ handler.
+ * @irq: IRQ number.
+ * @dev_id: platform device pointer.
+ */
+static irqreturn_t
+ds1685_rtc_irq_handler(int irq, void *dev_id)
+{
+ struct platform_device *pdev = dev_id;
+ struct ds1685_priv *rtc = platform_get_drvdata(pdev);
+ struct mutex *rtc_mutex;
+ u8 ctrlb, ctrlc;
+ unsigned long events = 0;
+ u8 num_irqs = 0;
+
+ /* Abort early if the device isn't ready yet (i.e., DEBUG_SHIRQ). */
+ if (unlikely(!rtc))
+ return IRQ_HANDLED;
+
+ rtc_mutex = &rtc->dev->ops_lock;
+ mutex_lock(rtc_mutex);
+ /* Ctrlb holds the interrupt-enable bits and ctrlc the flag bits. */
+ ctrlb = rtc->read(rtc, RTC_CTRL_B);
+ ctrlc = rtc->read(rtc, RTC_CTRL_C);
+
+ /* Is the IRQF bit set? */
+ if (likely(ctrlc & RTC_CTRL_C_IRQF)) {
+ /*
+ * We need to determine if it was one of the standard
+ * events: PF, AF, or UF. If so, we handle them and
+ * update the RTC core.
+ */
+ if (likely(ctrlc & RTC_CTRL_B_PAU_MASK)) {
+ events = RTC_IRQF;
+
+ /* Check for a periodic interrupt. */
+ if ((ctrlb & RTC_CTRL_B_PIE) &&
+ (ctrlc & RTC_CTRL_C_PF)) {
+ events |= RTC_PF;
+ num_irqs++;
+ }
+
+ /* Check for an alarm interrupt. */
+ if ((ctrlb & RTC_CTRL_B_AIE) &&
+ (ctrlc & RTC_CTRL_C_AF)) {
+ events |= RTC_AF;
+ num_irqs++;
+ }
+
+ /* Check for an update interrupt. */
+ if ((ctrlb & RTC_CTRL_B_UIE) &&
+ (ctrlc & RTC_CTRL_C_UF)) {
+ events |= RTC_UF;
+ num_irqs++;
+ }
+ } else {
+ /*
+ * One of the "extended" interrupts was received that
+ * is not recognized by the RTC core.
+ */
+ ds1685_rtc_extended_irq(rtc, pdev);
+ }
+ }
+ rtc_update_irq(rtc->dev, num_irqs, events);
mutex_unlock(rtc_mutex);
+
+ return events ? IRQ_HANDLED : IRQ_NONE;
}
/* ----------------------------------------------------------------------- */
@@ -869,11 +816,15 @@ static int ds1685_nvram_read(void *priv, unsigned int pos, void *val,
size_t size)
{
struct ds1685_priv *rtc = priv;
+ struct mutex *rtc_mutex = &rtc->dev->ops_lock;
ssize_t count;
- unsigned long flags = 0;
u8 *buf = val;
+ int err;
+
+ err = mutex_lock_interruptible(rtc_mutex);
+ if (err)
+ return err;
- spin_lock_irqsave(&rtc->lock, flags);
ds1685_rtc_switch_to_bank0(rtc);
/* Read NVRAM in time and bank0 registers. */
@@ -923,7 +874,7 @@ static int ds1685_nvram_read(void *priv, unsigned int pos, void *val,
ds1685_rtc_switch_to_bank0(rtc);
}
#endif /* !CONFIG_RTC_DRV_DS1689 */
- spin_unlock_irqrestore(&rtc->lock, flags);
+ mutex_unlock(rtc_mutex);
return 0;
}
@@ -932,11 +883,15 @@ static int ds1685_nvram_write(void *priv, unsigned int pos, void *val,
size_t size)
{
struct ds1685_priv *rtc = priv;
+ struct mutex *rtc_mutex = &rtc->dev->ops_lock;
ssize_t count;
- unsigned long flags = 0;
u8 *buf = val;
+ int err;
+
+ err = mutex_lock_interruptible(rtc_mutex);
+ if (err)
+ return err;
- spin_lock_irqsave(&rtc->lock, flags);
ds1685_rtc_switch_to_bank0(rtc);
/* Write NVRAM in time and bank0 registers. */
@@ -986,7 +941,7 @@ static int ds1685_nvram_write(void *priv, unsigned int pos, void *val,
ds1685_rtc_switch_to_bank0(rtc);
}
#endif /* !CONFIG_RTC_DRV_DS1689 */
- spin_unlock_irqrestore(&rtc->lock, flags);
+ mutex_unlock(rtc_mutex);
return 0;
}
@@ -1004,7 +959,7 @@ static ssize_t
ds1685_rtc_sysfs_battery_show(struct device *dev,
struct device_attribute *attr, char *buf)
{
- struct ds1685_priv *rtc = dev_get_drvdata(dev);
+ struct ds1685_priv *rtc = dev_get_drvdata(dev->parent);
u8 ctrld;
ctrld = rtc->read(rtc, RTC_CTRL_D);
@@ -1024,7 +979,7 @@ static ssize_t
ds1685_rtc_sysfs_auxbatt_show(struct device *dev,
struct device_attribute *attr, char *buf)
{
- struct ds1685_priv *rtc = dev_get_drvdata(dev);
+ struct ds1685_priv *rtc = dev_get_drvdata(dev->parent);
u8 ctrl4a;
ds1685_rtc_switch_to_bank1(rtc);
@@ -1046,7 +1001,7 @@ static ssize_t
ds1685_rtc_sysfs_serial_show(struct device *dev,
struct device_attribute *attr, char *buf)
{
- struct ds1685_priv *rtc = dev_get_drvdata(dev);
+ struct ds1685_priv *rtc = dev_get_drvdata(dev->parent);
u8 ssn[8];
ds1685_rtc_switch_to_bank1(rtc);
@@ -1177,9 +1132,7 @@ ds1685_rtc_probe(struct platform_device *pdev)
if (pdata->plat_post_ram_clear)
rtc->post_ram_clear = pdata->plat_post_ram_clear;
- /* Init the spinlock, workqueue, & set the driver data. */
- spin_lock_init(&rtc->lock);
- INIT_WORK(&rtc->work, ds1685_rtc_work_queue);
+ /* set the driver data. */
platform_set_drvdata(pdev, rtc);
/* Turn the oscillator on if is not already on (DV1 = 1). */
@@ -1335,22 +1288,23 @@ ds1685_rtc_probe(struct platform_device *pdev)
*/
if (!pdata->no_irq) {
ret = platform_get_irq(pdev, 0);
- if (ret > 0) {
- rtc->irq_num = ret;
-
- /* Request an IRQ. */
- ret = devm_request_irq(&pdev->dev, rtc->irq_num,
- ds1685_rtc_irq_handler,
- IRQF_SHARED, pdev->name, pdev);
-
- /* Check to see if something came back. */
- if (unlikely(ret)) {
- dev_warn(&pdev->dev,
- "RTC interrupt not available\n");
- rtc->irq_num = 0;
- }
- } else
+ if (ret <= 0)
return ret;
+
+ rtc->irq_num = ret;
+
+ /* Request an IRQ. */
+ ret = devm_request_threaded_irq(&pdev->dev, rtc->irq_num,
+ NULL, ds1685_rtc_irq_handler,
+ IRQF_SHARED | IRQF_ONESHOT,
+ pdev->name, pdev);
+
+ /* Check to see if something came back. */
+ if (unlikely(ret)) {
+ dev_warn(&pdev->dev,
+ "RTC interrupt not available\n");
+ rtc->irq_num = 0;
+ }
}
rtc->no_irq = pdata->no_irq;
@@ -1397,8 +1351,6 @@ ds1685_rtc_remove(struct platform_device *pdev)
(rtc->read(rtc, RTC_EXT_CTRL_4A) &
~(RTC_CTRL_4A_RWK_MASK)));
- cancel_work_sync(&rtc->work);
-
return 0;
}
diff --git a/drivers/rtc/rtc-ds2404.c b/drivers/rtc/rtc-ds2404.c
index b886b6a5c1785835f3d934500e31e0e2d61a15fc..1e9f429ada646f97dedd17fee6b3b95ecf165393 100644
--- a/drivers/rtc/rtc-ds2404.c
+++ b/drivers/rtc/rtc-ds2404.c
@@ -1,11 +1,5 @@
-/*
- * Copyright (C) 2012 Sven Schnelle <svens@stackframe.org>
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License version 2 as
- * published by the Free Software Foundation.
- *
- */
+// SPDX-License-Identifier: GPL-2.0
+// Copyright (C) 2012 Sven Schnelle <svens@stackframe.org>
#include <linux/platform_device.h>
#include <linux/module.h>
@@ -29,14 +23,6 @@
#define DS2404_COPY_SCRATCHPAD_CMD 0x55
#define DS2404_READ_MEMORY_CMD 0xf0
-struct ds2404;
-
-struct ds2404_chip_ops {
- int (*map_io)(struct ds2404 *chip, struct platform_device *pdev,
- struct ds2404_platform_data *pdata);
- void (*unmap_io)(struct ds2404 *chip);
-};
-
#define DS2404_RST 0
#define DS2404_CLK 1
#define DS2404_DQ 2
@@ -48,7 +34,6 @@ struct ds2404_gpio {
struct ds2404 {
struct ds2404_gpio *gpio;
- const struct ds2404_chip_ops *ops;
struct rtc_device *rtc;
};
@@ -87,7 +72,7 @@ static int ds2404_gpio_map(struct ds2404 *chip, struct platform_device *pdev,
return err;
}
-static void ds2404_gpio_unmap(struct ds2404 *chip)
+static void ds2404_gpio_unmap(void *data)
{
int i;
@@ -95,11 +80,6 @@ static void ds2404_gpio_unmap(struct ds2404 *chip)
gpio_free(ds2404_gpio[i].gpio);
}
-static const struct ds2404_chip_ops ds2404_gpio_ops = {
- .map_io = ds2404_gpio_map,
- .unmap_io = ds2404_gpio_unmap,
-};
-
static void ds2404_reset(struct device *dev)
{
gpio_set_value(ds2404_gpio[DS2404_RST].gpio, 0);
@@ -206,20 +186,20 @@ static int ds2404_read_time(struct device *dev, struct rtc_time *dt)
ds2404_read_memory(dev, 0x203, 4, (u8 *)&time);
time = le32_to_cpu(time);
- rtc_time_to_tm(time, dt);
+ rtc_time64_to_tm(time, dt);
return 0;
}
-static int ds2404_set_mmss(struct device *dev, unsigned long secs)
+static int ds2404_set_time(struct device *dev, struct rtc_time *dt)
{
- u32 time = cpu_to_le32(secs);
+ u32 time = cpu_to_le32(rtc_tm_to_time64(dt));
ds2404_write_memory(dev, 0x203, 4, (u8 *)&time);
return 0;
}
static const struct rtc_class_ops ds2404_rtc_ops = {
.read_time = ds2404_read_time,
- .set_mmss = ds2404_set_mmss,
+ .set_time = ds2404_set_time,
};
static int rtc_probe(struct platform_device *pdev)
@@ -232,11 +212,17 @@ static int rtc_probe(struct platform_device *pdev)
if (!chip)
return -ENOMEM;
- chip->ops = &ds2404_gpio_ops;
+ chip->rtc = devm_rtc_allocate_device(&pdev->dev);
+ if (IS_ERR(chip->rtc))
+ return PTR_ERR(chip->rtc);
- retval = chip->ops->map_io(chip, pdev, pdata);
+ retval = ds2404_gpio_map(chip, pdev, pdata);
if (retval)
- goto err_chip;
+ return retval;
+
+ retval = devm_add_action_or_reset(&pdev->dev, ds2404_gpio_unmap, chip);
+ if (retval)
+ return retval;
dev_info(&pdev->dev, "using GPIOs RST:%d, CLK:%d, DQ:%d\n",
chip->gpio[DS2404_RST].gpio, chip->gpio[DS2404_CLK].gpio,
@@ -244,34 +230,19 @@ static int rtc_probe(struct platform_device *pdev)
platform_set_drvdata(pdev, chip);
- chip->rtc = devm_rtc_device_register(&pdev->dev, "ds2404",
- &ds2404_rtc_ops, THIS_MODULE);
- if (IS_ERR(chip->rtc)) {
- retval = PTR_ERR(chip->rtc);
- goto err_io;
- }
+ chip->rtc->ops = &ds2404_rtc_ops;
+ chip->rtc->range_max = U32_MAX;
- ds2404_enable_osc(&pdev->dev);
- return 0;
-
-err_io:
- chip->ops->unmap_io(chip);
-err_chip:
- return retval;
-}
-
-static int rtc_remove(struct platform_device *dev)
-{
- struct ds2404 *chip = platform_get_drvdata(dev);
-
- chip->ops->unmap_io(chip);
+ retval = rtc_register_device(chip->rtc);
+ if (retval)
+ return retval;
+ ds2404_enable_osc(&pdev->dev);
return 0;
}
static struct platform_driver rtc_device_driver = {
.probe = rtc_probe,
- .remove = rtc_remove,
.driver = {
.name = "ds2404",
},
diff --git a/drivers/rtc/rtc-ds3232.c b/drivers/rtc/rtc-ds3232.c
index 7184e5145f12da07e01a837cef7bf1376cff75fa..1e9312f960214c469b4c392afa18495f9fc614ce 100644
--- a/drivers/rtc/rtc-ds3232.c
+++ b/drivers/rtc/rtc-ds3232.c
@@ -48,6 +48,10 @@
# define DS3232_REG_SR_A1F 0x01
#define DS3232_REG_TEMPERATURE 0x11
+#define DS3232_REG_SRAM_START 0x14
+#define DS3232_REG_SRAM_END 0xFF
+
+#define DS3232_REG_SRAM_SIZE 236
struct ds3232 {
struct device *dev;
@@ -461,11 +465,39 @@ static const struct rtc_class_ops ds3232_rtc_ops = {
.alarm_irq_enable = ds3232_alarm_irq_enable,
};
+static int ds3232_nvmem_read(void *priv, unsigned int offset, void *val,
+ size_t bytes)
+{
+ struct regmap *ds3232_regmap = (struct regmap *)priv;
+
+ return regmap_bulk_read(ds3232_regmap, DS3232_REG_SRAM_START + offset,
+ val, bytes);
+}
+
+static int ds3232_nvmem_write(void *priv, unsigned int offset, void *val,
+ size_t bytes)
+{
+ struct regmap *ds3232_regmap = (struct regmap *)priv;
+
+ return regmap_bulk_write(ds3232_regmap, DS3232_REG_SRAM_START + offset,
+ val, bytes);
+}
+
static int ds3232_probe(struct device *dev, struct regmap *regmap, int irq,
const char *name)
{
struct ds3232 *ds3232;
int ret;
+ struct nvmem_config nvmem_cfg = {
+ .name = "ds3232_sram",
+ .stride = 1,
+ .size = DS3232_REG_SRAM_SIZE,
+ .word_size = 1,
+ .reg_read = ds3232_nvmem_read,
+ .reg_write = ds3232_nvmem_write,
+ .priv = regmap,
+ .type = NVMEM_TYPE_BATTERY_BACKED
+ };
ds3232 = devm_kzalloc(dev, sizeof(*ds3232), GFP_KERNEL);
if (!ds3232)
@@ -490,6 +522,10 @@ static int ds3232_probe(struct device *dev, struct regmap *regmap, int irq,
if (IS_ERR(ds3232->rtc))
return PTR_ERR(ds3232->rtc);
+ ret = rtc_nvmem_register(ds3232->rtc, &nvmem_cfg);
+ if(ret)
+ return ret;
+
if (ds3232->irq > 0) {
ret = devm_request_threaded_irq(dev, ds3232->irq, NULL,
ds3232_irq,
@@ -542,7 +578,7 @@ static int ds3232_i2c_probe(struct i2c_client *client,
static const struct regmap_config config = {
.reg_bits = 8,
.val_bits = 8,
- .max_register = 0x13,
+ .max_register = DS3232_REG_SRAM_END,
};
regmap = devm_regmap_init_i2c(client, &config);
@@ -609,7 +645,7 @@ static int ds3234_probe(struct spi_device *spi)
static const struct regmap_config config = {
.reg_bits = 8,
.val_bits = 8,
- .max_register = 0x13,
+ .max_register = DS3232_REG_SRAM_END,
.write_flag_mask = 0x80,
};
struct regmap *regmap;
diff --git a/drivers/rtc/rtc-ep93xx.c b/drivers/rtc/rtc-ep93xx.c
index 1932a4f861d1b993893a35fa6b3f073ea5af4b46..1766496385fed78a6db7ce5171eba1b5a5e935e6 100644
--- a/drivers/rtc/rtc-ep93xx.c
+++ b/drivers/rtc/rtc-ep93xx.c
@@ -1,12 +1,9 @@
+// SPDX-License-Identifier: GPL-2.0
/*
* A driver for the RTC embedded in the Cirrus Logic EP93XX processors
* Copyright (c) 2006 Tower Technologies
*
* Author: Alessandro Zummo <a.zummo@towertech.it>
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License version 2 as
- * published by the Free Software Foundation.
*/
#include <linux/module.h>
@@ -18,27 +15,23 @@
#define EP93XX_RTC_DATA 0x000
#define EP93XX_RTC_MATCH 0x004
#define EP93XX_RTC_STATUS 0x008
-#define EP93XX_RTC_STATUS_INTR (1<<0)
+#define EP93XX_RTC_STATUS_INTR BIT(0)
#define EP93XX_RTC_LOAD 0x00C
#define EP93XX_RTC_CONTROL 0x010
-#define EP93XX_RTC_CONTROL_MIE (1<<0)
+#define EP93XX_RTC_CONTROL_MIE BIT(0)
#define EP93XX_RTC_SWCOMP 0x108
#define EP93XX_RTC_SWCOMP_DEL_MASK 0x001f0000
#define EP93XX_RTC_SWCOMP_DEL_SHIFT 16
#define EP93XX_RTC_SWCOMP_INT_MASK 0x0000ffff
#define EP93XX_RTC_SWCOMP_INT_SHIFT 0
-/*
- * struct device dev.platform_data is used to store our private data
- * because struct rtc_device does not have a variable to hold it.
- */
struct ep93xx_rtc {
void __iomem *mmio_base;
struct rtc_device *rtc;
};
static int ep93xx_rtc_get_swcomp(struct device *dev, unsigned short *preload,
- unsigned short *delete)
+ unsigned short *delete)
{
struct ep93xx_rtc *ep93xx_rtc = dev_get_platdata(dev);
unsigned long comp;
@@ -63,13 +56,14 @@ static int ep93xx_rtc_read_time(struct device *dev, struct rtc_time *tm)
time = readl(ep93xx_rtc->mmio_base + EP93XX_RTC_DATA);
- rtc_time_to_tm(time, tm);
+ rtc_time64_to_tm(time, tm);
return 0;
}
-static int ep93xx_rtc_set_mmss(struct device *dev, unsigned long secs)
+static int ep93xx_rtc_set_time(struct device *dev, struct rtc_time *tm)
{
struct ep93xx_rtc *ep93xx_rtc = dev_get_platdata(dev);
+ unsigned long secs = rtc_tm_to_time64(tm);
writel(secs + 1, ep93xx_rtc->mmio_base + EP93XX_RTC_LOAD);
return 0;
@@ -89,31 +83,31 @@ static int ep93xx_rtc_proc(struct device *dev, struct seq_file *seq)
static const struct rtc_class_ops ep93xx_rtc_ops = {
.read_time = ep93xx_rtc_read_time,
- .set_mmss = ep93xx_rtc_set_mmss,
+ .set_time = ep93xx_rtc_set_time,
.proc = ep93xx_rtc_proc,
};
-static ssize_t ep93xx_rtc_show_comp_preload(struct device *dev,
- struct device_attribute *attr, char *buf)
+static ssize_t comp_preload_show(struct device *dev,
+ struct device_attribute *attr, char *buf)
{
unsigned short preload;
- ep93xx_rtc_get_swcomp(dev, &preload, NULL);
+ ep93xx_rtc_get_swcomp(dev->parent, &preload, NULL);
return sprintf(buf, "%d\n", preload);
}
-static DEVICE_ATTR(comp_preload, S_IRUGO, ep93xx_rtc_show_comp_preload, NULL);
+static DEVICE_ATTR_RO(comp_preload);
-static ssize_t ep93xx_rtc_show_comp_delete(struct device *dev,
- struct device_attribute *attr, char *buf)
+static ssize_t comp_delete_show(struct device *dev,
+ struct device_attribute *attr, char *buf)
{
unsigned short delete;
- ep93xx_rtc_get_swcomp(dev, NULL, &delete);
+ ep93xx_rtc_get_swcomp(dev->parent, NULL, &delete);
return sprintf(buf, "%d\n", delete);
}
-static DEVICE_ATTR(comp_delete, S_IRUGO, ep93xx_rtc_show_comp_delete, NULL);
+static DEVICE_ATTR_RO(comp_delete);
static struct attribute *ep93xx_rtc_attrs[] = {
&dev_attr_comp_preload.attr,
@@ -140,33 +134,20 @@ static int ep93xx_rtc_probe(struct platform_device *pdev)
if (IS_ERR(ep93xx_rtc->mmio_base))
return PTR_ERR(ep93xx_rtc->mmio_base);
- pdev->dev.platform_data = ep93xx_rtc;
platform_set_drvdata(pdev, ep93xx_rtc);
- ep93xx_rtc->rtc = devm_rtc_device_register(&pdev->dev,
- pdev->name, &ep93xx_rtc_ops, THIS_MODULE);
- if (IS_ERR(ep93xx_rtc->rtc)) {
- err = PTR_ERR(ep93xx_rtc->rtc);
- goto exit;
- }
+ ep93xx_rtc->rtc = devm_rtc_allocate_device(&pdev->dev);
+ if (IS_ERR(ep93xx_rtc->rtc))
+ return PTR_ERR(ep93xx_rtc->rtc);
- err = sysfs_create_group(&pdev->dev.kobj, &ep93xx_rtc_sysfs_files);
- if (err)
- goto exit;
-
- return 0;
+ ep93xx_rtc->rtc->ops = &ep93xx_rtc_ops;
+ ep93xx_rtc->rtc->range_max = U32_MAX;
-exit:
- pdev->dev.platform_data = NULL;
- return err;
-}
-
-static int ep93xx_rtc_remove(struct platform_device *pdev)
-{
- sysfs_remove_group(&pdev->dev.kobj, &ep93xx_rtc_sysfs_files);
- pdev->dev.platform_data = NULL;
+ err = rtc_add_group(ep93xx_rtc->rtc, &ep93xx_rtc_sysfs_files);
+ if (err)
+ return err;
- return 0;
+ return rtc_register_device(ep93xx_rtc->rtc);
}
static struct platform_driver ep93xx_rtc_driver = {
@@ -174,7 +155,6 @@ static struct platform_driver ep93xx_rtc_driver = {
.name = "ep93xx-rtc",
},
.probe = ep93xx_rtc_probe,
- .remove = ep93xx_rtc_remove,
};
module_platform_driver(ep93xx_rtc_driver);
diff --git a/drivers/rtc/rtc-goldfish.c b/drivers/rtc/rtc-goldfish.c
index a1c44d0c855780f8ba109e79c6bd62cb96dbb40d..1a3420ee6a4d964c44bd30bc2af415e66b82d4ee 100644
--- a/drivers/rtc/rtc-goldfish.c
+++ b/drivers/rtc/rtc-goldfish.c
@@ -1,23 +1,15 @@
+// SPDX-License-Identifier: GPL-2.0
/* drivers/rtc/rtc-goldfish.c
*
* Copyright (C) 2007 Google, Inc.
* Copyright (C) 2017 Imagination Technologies Ltd.
- *
- * This software is licensed under the terms of the GNU General Public
- * License version 2, as published by the Free Software Foundation, and
- * may be copied, distributed, and modified under those terms.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
- *
*/
+#include <linux/io.h>
#include <linux/module.h>
+#include <linux/of.h>
#include <linux/platform_device.h>
#include <linux/rtc.h>
-#include <linux/io.h>
#define TIMER_TIME_LOW 0x00 /* get low bits of current time */
/* and update TIMER_TIME_HIGH */
@@ -56,7 +48,7 @@ static int goldfish_rtc_read_alarm(struct device *dev,
do_div(rtc_alarm, NSEC_PER_SEC);
memset(alrm, 0, sizeof(struct rtc_wkalrm));
- rtc_time_to_tm(rtc_alarm, &alrm->time);
+ rtc_time64_to_tm(rtc_alarm, &alrm->time);
if (readl(base + TIMER_ALARM_STATUS))
alrm->enabled = 1;
@@ -70,21 +62,15 @@ static int goldfish_rtc_set_alarm(struct device *dev,
struct rtc_wkalrm *alrm)
{
struct goldfish_rtc *rtcdrv;
- unsigned long rtc_alarm;
u64 rtc_alarm64;
u64 rtc_status_reg;
void __iomem *base;
- int ret = 0;
rtcdrv = dev_get_drvdata(dev);
base = rtcdrv->base;
if (alrm->enabled) {
- ret = rtc_tm_to_time(&alrm->time, &rtc_alarm);
- if (ret != 0)
- return ret;
-
- rtc_alarm64 = rtc_alarm * NSEC_PER_SEC;
+ rtc_alarm64 = rtc_tm_to_time64(&alrm->time) * NSEC_PER_SEC;
writel((rtc_alarm64 >> 32), base + TIMER_ALARM_HIGH);
writel(rtc_alarm64, base + TIMER_ALARM_LOW);
} else {
@@ -98,7 +84,7 @@ static int goldfish_rtc_set_alarm(struct device *dev,
writel(1, base + TIMER_CLEAR_ALARM);
}
- return ret;
+ return 0;
}
static int goldfish_rtc_alarm_irq_enable(struct device *dev,
@@ -147,7 +133,7 @@ static int goldfish_rtc_read_time(struct device *dev, struct rtc_time *tm)
do_div(time, NSEC_PER_SEC);
- rtc_time_to_tm(time, tm);
+ rtc_time64_to_tm(time, tm);
return 0;
}
@@ -156,21 +142,16 @@ static int goldfish_rtc_set_time(struct device *dev, struct rtc_time *tm)
{
struct goldfish_rtc *rtcdrv;
void __iomem *base;
- unsigned long now;
u64 now64;
- int ret;
rtcdrv = dev_get_drvdata(dev);
base = rtcdrv->base;
- ret = rtc_tm_to_time(tm, &now);
- if (ret == 0) {
- now64 = now * NSEC_PER_SEC;
- writel((now64 >> 32), base + TIMER_TIME_HIGH);
- writel(now64, base + TIMER_TIME_LOW);
- }
+ now64 = rtc_tm_to_time64(tm) * NSEC_PER_SEC;
+ writel((now64 >> 32), base + TIMER_TIME_HIGH);
+ writel(now64, base + TIMER_TIME_LOW);
- return ret;
+ return 0;
}
static const struct rtc_class_ops goldfish_rtc_ops = {
@@ -205,19 +186,20 @@ static int goldfish_rtc_probe(struct platform_device *pdev)
if (rtcdrv->irq < 0)
return -ENODEV;
- rtcdrv->rtc = devm_rtc_device_register(&pdev->dev, pdev->name,
- &goldfish_rtc_ops,
- THIS_MODULE);
+ rtcdrv->rtc = devm_rtc_allocate_device(&pdev->dev);
if (IS_ERR(rtcdrv->rtc))
return PTR_ERR(rtcdrv->rtc);
+ rtcdrv->rtc->ops = &goldfish_rtc_ops;
+ rtcdrv->rtc->range_max = U64_MAX / NSEC_PER_SEC;
+
err = devm_request_irq(&pdev->dev, rtcdrv->irq,
goldfish_rtc_interrupt,
0, pdev->name, rtcdrv);
if (err)
return err;
- return 0;
+ return rtc_register_device(rtcdrv->rtc);
}
static const struct of_device_id goldfish_rtc_of_match[] = {
diff --git a/drivers/rtc/rtc-hid-sensor-time.c b/drivers/rtc/rtc-hid-sensor-time.c
index 3e1abb4554721c496f2c16532e9ed12590946f1b..f27c40e8331f9e868198a96c33d613a7b55a03f2 100644
--- a/drivers/rtc/rtc-hid-sensor-time.c
+++ b/drivers/rtc/rtc-hid-sensor-time.c
@@ -205,8 +205,7 @@ static int hid_time_parse_report(struct platform_device *pdev,
static int hid_rtc_read_time(struct device *dev, struct rtc_time *tm)
{
unsigned long flags;
- struct hid_time_state *time_state =
- platform_get_drvdata(to_platform_device(dev));
+ struct hid_time_state *time_state = dev_get_drvdata(dev);
int ret;
reinit_completion(&time_state->comp_last_time);
diff --git a/drivers/rtc/rtc-imxdi.c b/drivers/rtc/rtc-imxdi.c
index 80931114c8997a93dddd55a857593ce301a3c4d4..3f3d652a0b0fdfc570f43b33a5e30983330d9535 100644
--- a/drivers/rtc/rtc-imxdi.c
+++ b/drivers/rtc/rtc-imxdi.c
@@ -1,19 +1,9 @@
+// SPDX-License-Identifier: GPL-2.0+
/*
* Copyright 2008-2009 Freescale Semiconductor, Inc. All Rights Reserved.
* Copyright 2010 Orex Computed Radiography
*/
-/*
- * The code contained herein is licensed under the GNU General Public
- * License. You may obtain a copy of the GNU General Public License
- * Version 2 or later at the following locations:
- *
- * http://www.opensource.org/licenses/gpl-license.html
- * http://www.gnu.org/copyleft/gpl.html
- */
-
-/* based on rtc-mc13892.c */
-
/*
* This driver uses the 47-bit 32 kHz counter in the Freescale DryIce block
* to implement a Linux RTC. Times and alarms are truncated to seconds.
@@ -552,7 +542,7 @@ static int dryice_rtc_read_time(struct device *dev, struct rtc_time *tm)
unsigned long now;
now = readl(imxdi->ioaddr + DTCMR);
- rtc_time_to_tm(now, tm);
+ rtc_time64_to_tm(now, tm);
return 0;
}
@@ -561,7 +551,7 @@ static int dryice_rtc_read_time(struct device *dev, struct rtc_time *tm)
* set the seconds portion of dryice time counter and clear the
* fractional part.
*/
-static int dryice_rtc_set_mmss(struct device *dev, unsigned long secs)
+static int dryice_rtc_set_time(struct device *dev, struct rtc_time *tm)
{
struct imxdi_dev *imxdi = dev_get_drvdata(dev);
u32 dcr, dsr;
@@ -588,7 +578,7 @@ static int dryice_rtc_set_mmss(struct device *dev, unsigned long secs)
if (rc != 0)
return rc;
- rc = di_write_wait(imxdi, secs, DTCMR);
+ rc = di_write_wait(imxdi, rtc_tm_to_time64(tm), DTCMR);
if (rc != 0)
return rc;
@@ -618,7 +608,7 @@ static int dryice_rtc_read_alarm(struct device *dev, struct rtc_wkalrm *alarm)
u32 dcamr;
dcamr = readl(imxdi->ioaddr + DCAMR);
- rtc_time_to_tm(dcamr, &alarm->time);
+ rtc_time64_to_tm(dcamr, &alarm->time);
/* alarm is enabled if the interrupt is enabled */
alarm->enabled = (readl(imxdi->ioaddr + DIER) & DIER_CAIE) != 0;
@@ -640,21 +630,10 @@ static int dryice_rtc_read_alarm(struct device *dev, struct rtc_wkalrm *alarm)
static int dryice_rtc_set_alarm(struct device *dev, struct rtc_wkalrm *alarm)
{
struct imxdi_dev *imxdi = dev_get_drvdata(dev);
- unsigned long now;
- unsigned long alarm_time;
int rc;
- rc = rtc_tm_to_time(&alarm->time, &alarm_time);
- if (rc)
- return rc;
-
- /* don't allow setting alarm in the past */
- now = readl(imxdi->ioaddr + DTCMR);
- if (alarm_time < now)
- return -EINVAL;
-
/* write the new alarm time */
- rc = di_write_wait(imxdi, (u32)alarm_time, DCAMR);
+ rc = di_write_wait(imxdi, rtc_tm_to_time64(&alarm->time), DCAMR);
if (rc)
return rc;
@@ -668,7 +647,7 @@ static int dryice_rtc_set_alarm(struct device *dev, struct rtc_wkalrm *alarm)
static const struct rtc_class_ops dryice_rtc_ops = {
.read_time = dryice_rtc_read_time,
- .set_mmss = dryice_rtc_set_mmss,
+ .set_time = dryice_rtc_set_time,
.alarm_irq_enable = dryice_rtc_alarm_irq_enable,
.read_alarm = dryice_rtc_read_alarm,
.set_alarm = dryice_rtc_set_alarm,
@@ -796,6 +775,10 @@ static int __init dryice_rtc_probe(struct platform_device *pdev)
mutex_init(&imxdi->write_mutex);
+ imxdi->rtc = devm_rtc_allocate_device(&pdev->dev);
+ if (IS_ERR(imxdi->rtc))
+ return PTR_ERR(imxdi->rtc);
+
imxdi->clk = devm_clk_get(&pdev->dev, NULL);
if (IS_ERR(imxdi->clk))
return PTR_ERR(imxdi->clk);
@@ -829,12 +812,13 @@ static int __init dryice_rtc_probe(struct platform_device *pdev)
}
platform_set_drvdata(pdev, imxdi);
- imxdi->rtc = devm_rtc_device_register(&pdev->dev, pdev->name,
- &dryice_rtc_ops, THIS_MODULE);
- if (IS_ERR(imxdi->rtc)) {
- rc = PTR_ERR(imxdi->rtc);
+
+ imxdi->rtc->ops = &dryice_rtc_ops;
+ imxdi->rtc->range_max = U32_MAX;
+
+ rc = rtc_register_device(imxdi->rtc);
+ if (rc)
goto err;
- }
return 0;
diff --git a/drivers/rtc/rtc-jz4740.c b/drivers/rtc/rtc-jz4740.c
index d0a891777f442b41981e22de3d1021ce5d7a66a9..9e7b3a04debc11fc8abd6949165d467f17f89dfe 100644
--- a/drivers/rtc/rtc-jz4740.c
+++ b/drivers/rtc/rtc-jz4740.c
@@ -1,17 +1,8 @@
+// SPDX-License-Identifier: GPL-2.0+
/*
* Copyright (C) 2009-2010, Lars-Peter Clausen <lars@metafoo.de>
* Copyright (C) 2010, Paul Cercueil <paul@crapouillou.net>
* JZ4740 SoC RTC driver
- *
- * This program is free software; you can redistribute it and/or modify it
- * under the terms of the GNU General Public License as published by the
- * Free Software Foundation; either version 2 of the License, or (at your
- * option) any later version.
- *
- * You should have received a copy of the GNU General Public License along
- * with this program; if not, write to the Free Software Foundation, Inc.,
- * 675 Mass Ave, Cambridge, MA 02139, USA.
- *
*/
#include <linux/clk.h>
@@ -20,6 +11,7 @@
#include <linux/module.h>
#include <linux/of_device.h>
#include <linux/platform_device.h>
+#include <linux/pm_wakeirq.h>
#include <linux/reboot.h>
#include <linux/rtc.h>
#include <linux/slab.h>
@@ -156,6 +148,9 @@ static int jz4740_rtc_read_time(struct device *dev, struct rtc_time *time)
uint32_t secs, secs2;
int timeout = 5;
+ if (jz4740_rtc_reg_read(rtc, JZ_REG_RTC_SCRATCHPAD) != 0x12345678)
+ return -EINVAL;
+
/* If the seconds register is read while it is updated, it can contain a
* bogus value. This can be avoided by making sure that two consecutive
* reads have the same value.
@@ -171,16 +166,21 @@ static int jz4740_rtc_read_time(struct device *dev, struct rtc_time *time)
if (timeout == 0)
return -EIO;
- rtc_time_to_tm(secs, time);
+ rtc_time64_to_tm(secs, time);
return 0;
}
-static int jz4740_rtc_set_mmss(struct device *dev, unsigned long secs)
+static int jz4740_rtc_set_time(struct device *dev, struct rtc_time *time)
{
struct jz4740_rtc *rtc = dev_get_drvdata(dev);
+ int ret;
- return jz4740_rtc_reg_write(rtc, JZ_REG_RTC_SEC, secs);
+ ret = jz4740_rtc_reg_write(rtc, JZ_REG_RTC_SEC, rtc_tm_to_time64(time));
+ if (ret)
+ return ret;
+
+ return jz4740_rtc_reg_write(rtc, JZ_REG_RTC_SCRATCHPAD, 0x12345678);
}
static int jz4740_rtc_read_alarm(struct device *dev, struct rtc_wkalrm *alrm)
@@ -196,18 +196,16 @@ static int jz4740_rtc_read_alarm(struct device *dev, struct rtc_wkalrm *alrm)
alrm->enabled = !!(ctrl & JZ_RTC_CTRL_AE);
alrm->pending = !!(ctrl & JZ_RTC_CTRL_AF);
- rtc_time_to_tm(secs, &alrm->time);
+ rtc_time64_to_tm(secs, &alrm->time);
- return rtc_valid_tm(&alrm->time);
+ return 0;
}
static int jz4740_rtc_set_alarm(struct device *dev, struct rtc_wkalrm *alrm)
{
int ret;
struct jz4740_rtc *rtc = dev_get_drvdata(dev);
- unsigned long secs;
-
- rtc_tm_to_time(&alrm->time, &secs);
+ uint32_t secs = lower_32_bits(rtc_tm_to_time64(&alrm->time));
ret = jz4740_rtc_reg_write(rtc, JZ_REG_RTC_SEC_ALARM, secs);
if (!ret)
@@ -225,7 +223,7 @@ static int jz4740_rtc_alarm_irq_enable(struct device *dev, unsigned int enable)
static const struct rtc_class_ops jz4740_rtc_ops = {
.read_time = jz4740_rtc_read_time,
- .set_mmss = jz4740_rtc_set_mmss,
+ .set_time = jz4740_rtc_set_time,
.read_alarm = jz4740_rtc_read_alarm,
.set_alarm = jz4740_rtc_set_alarm,
.alarm_irq_enable = jz4740_rtc_alarm_irq_enable,
@@ -309,7 +307,6 @@ static int jz4740_rtc_probe(struct platform_device *pdev)
{
int ret;
struct jz4740_rtc *rtc;
- uint32_t scratchpad;
struct resource *mem;
const struct platform_device_id *id = platform_get_device_id(pdev);
const struct of_device_id *of_id = of_match_device(
@@ -348,10 +345,24 @@ static int jz4740_rtc_probe(struct platform_device *pdev)
device_init_wakeup(&pdev->dev, 1);
- rtc->rtc = devm_rtc_device_register(&pdev->dev, pdev->name,
- &jz4740_rtc_ops, THIS_MODULE);
+ ret = dev_pm_set_wake_irq(&pdev->dev, rtc->irq);
+ if (ret) {
+ dev_err(&pdev->dev, "Failed to set wake irq: %d\n", ret);
+ return ret;
+ }
+
+ rtc->rtc = devm_rtc_allocate_device(&pdev->dev);
if (IS_ERR(rtc->rtc)) {
ret = PTR_ERR(rtc->rtc);
+ dev_err(&pdev->dev, "Failed to allocate rtc device: %d\n", ret);
+ return ret;
+ }
+
+ rtc->rtc->ops = &jz4740_rtc_ops;
+ rtc->rtc->range_max = U32_MAX;
+
+ ret = rtc_register_device(rtc->rtc);
+ if (ret) {
dev_err(&pdev->dev, "Failed to register rtc device: %d\n", ret);
return ret;
}
@@ -363,16 +374,6 @@ static int jz4740_rtc_probe(struct platform_device *pdev)
return ret;
}
- scratchpad = jz4740_rtc_reg_read(rtc, JZ_REG_RTC_SCRATCHPAD);
- if (scratchpad != 0x12345678) {
- ret = jz4740_rtc_reg_write(rtc, JZ_REG_RTC_SCRATCHPAD, 0x12345678);
- ret = jz4740_rtc_reg_write(rtc, JZ_REG_RTC_SEC, 0);
- if (ret) {
- dev_err(&pdev->dev, "Could not write to RTC registers\n");
- return ret;
- }
- }
-
if (np && of_device_is_system_power_controller(np)) {
if (!pm_power_off) {
/* Default: 60ms */
@@ -397,35 +398,6 @@ static int jz4740_rtc_probe(struct platform_device *pdev)
return 0;
}
-#ifdef CONFIG_PM
-static int jz4740_rtc_suspend(struct device *dev)
-{
- struct jz4740_rtc *rtc = dev_get_drvdata(dev);
-
- if (device_may_wakeup(dev))
- enable_irq_wake(rtc->irq);
- return 0;
-}
-
-static int jz4740_rtc_resume(struct device *dev)
-{
- struct jz4740_rtc *rtc = dev_get_drvdata(dev);
-
- if (device_may_wakeup(dev))
- disable_irq_wake(rtc->irq);
- return 0;
-}
-
-static const struct dev_pm_ops jz4740_pm_ops = {
- .suspend = jz4740_rtc_suspend,
- .resume = jz4740_rtc_resume,
-};
-#define JZ4740_RTC_PM_OPS (&jz4740_pm_ops)
-
-#else
-#define JZ4740_RTC_PM_OPS NULL
-#endif /* CONFIG_PM */
-
static const struct platform_device_id jz4740_rtc_ids[] = {
{ "jz4740-rtc", ID_JZ4740 },
{ "jz4780-rtc", ID_JZ4780 },
@@ -437,7 +409,6 @@ static struct platform_driver jz4740_rtc_driver = {
.probe = jz4740_rtc_probe,
.driver = {
.name = "jz4740-rtc",
- .pm = JZ4740_RTC_PM_OPS,
.of_match_table = of_match_ptr(jz4740_rtc_of_match),
},
.id_table = jz4740_rtc_ids,
diff --git a/drivers/rtc/rtc-lpc32xx.c b/drivers/rtc/rtc-lpc32xx.c
index 910e600275b970d13b7f6b70b265cd214b9eadeb..ac393230e592632227e4b0c2c194d3e3acc5cf9f 100644
--- a/drivers/rtc/rtc-lpc32xx.c
+++ b/drivers/rtc/rtc-lpc32xx.c
@@ -1,14 +1,6 @@
+// SPDX-License-Identifier: GPL-2.0+
/*
* Copyright (C) 2010 NXP Semiconductors
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
- *
- * You should have received a copy of the GNU General Public License along
- * with this program; if not, write to the Free Software Foundation, Inc.,
- * 675 Mass Ave, Cambridge, MA 02139, USA.
*/
#include <linux/kernel.h>
@@ -47,8 +39,6 @@
#define LPC32XX_RTC_KEY_ONSW_LOADVAL 0xB5C13F27
-#define RTC_NAME "rtc-lpc32xx"
-
#define rtc_readl(dev, reg) \
__raw_readl((dev)->rtc_base + (reg))
#define rtc_writel(dev, reg, val) \
@@ -68,14 +58,15 @@ static int lpc32xx_rtc_read_time(struct device *dev, struct rtc_time *time)
struct lpc32xx_rtc *rtc = dev_get_drvdata(dev);
elapsed_sec = rtc_readl(rtc, LPC32XX_RTC_UCOUNT);
- rtc_time_to_tm(elapsed_sec, time);
+ rtc_time64_to_tm(elapsed_sec, time);
return 0;
}
-static int lpc32xx_rtc_set_mmss(struct device *dev, unsigned long secs)
+static int lpc32xx_rtc_set_time(struct device *dev, struct rtc_time *time)
{
struct lpc32xx_rtc *rtc = dev_get_drvdata(dev);
+ u32 secs = rtc_tm_to_time64(time);
u32 tmp;
spin_lock_irq(&rtc->lock);
@@ -97,7 +88,7 @@ static int lpc32xx_rtc_read_alarm(struct device *dev,
{
struct lpc32xx_rtc *rtc = dev_get_drvdata(dev);
- rtc_time_to_tm(rtc_readl(rtc, LPC32XX_RTC_MATCH0), &wkalrm->time);
+ rtc_time64_to_tm(rtc_readl(rtc, LPC32XX_RTC_MATCH0), &wkalrm->time);
wkalrm->enabled = rtc->alarm_enabled;
wkalrm->pending = !!(rtc_readl(rtc, LPC32XX_RTC_INTSTAT) &
LPC32XX_RTC_INTSTAT_MATCH0);
@@ -111,13 +102,8 @@ static int lpc32xx_rtc_set_alarm(struct device *dev,
struct lpc32xx_rtc *rtc = dev_get_drvdata(dev);
unsigned long alarmsecs;
u32 tmp;
- int ret;
- ret = rtc_tm_to_time(&wkalrm->time, &alarmsecs);
- if (ret < 0) {
- dev_warn(dev, "Failed to convert time: %d\n", ret);
- return ret;
- }
+ alarmsecs = rtc_tm_to_time64(&wkalrm->time);
spin_lock_irq(&rtc->lock);
@@ -191,7 +177,7 @@ static irqreturn_t lpc32xx_rtc_alarm_interrupt(int irq, void *dev)
static const struct rtc_class_ops lpc32xx_rtc_ops = {
.read_time = lpc32xx_rtc_read_time,
- .set_mmss = lpc32xx_rtc_set_mmss,
+ .set_time = lpc32xx_rtc_set_time,
.read_alarm = lpc32xx_rtc_read_alarm,
.set_alarm = lpc32xx_rtc_set_alarm,
.alarm_irq_enable = lpc32xx_rtc_alarm_irq_enable,
@@ -201,21 +187,13 @@ static int lpc32xx_rtc_probe(struct platform_device *pdev)
{
struct resource *res;
struct lpc32xx_rtc *rtc;
- int rtcirq;
+ int err;
u32 tmp;
- rtcirq = platform_get_irq(pdev, 0);
- if (rtcirq < 0) {
- dev_warn(&pdev->dev, "Can't get interrupt resource\n");
- rtcirq = -1;
- }
-
rtc = devm_kzalloc(&pdev->dev, sizeof(*rtc), GFP_KERNEL);
if (unlikely(!rtc))
return -ENOMEM;
- rtc->irq = rtcirq;
-
res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
rtc->rtc_base = devm_ioremap_resource(&pdev->dev, res);
if (IS_ERR(rtc->rtc_base))
@@ -256,18 +234,25 @@ static int lpc32xx_rtc_probe(struct platform_device *pdev)
platform_set_drvdata(pdev, rtc);
- rtc->rtc = devm_rtc_device_register(&pdev->dev, RTC_NAME,
- &lpc32xx_rtc_ops, THIS_MODULE);
- if (IS_ERR(rtc->rtc)) {
- dev_err(&pdev->dev, "Can't get RTC\n");
+ rtc->rtc = devm_rtc_allocate_device(&pdev->dev);
+ if (IS_ERR(rtc->rtc))
return PTR_ERR(rtc->rtc);
- }
+
+ rtc->rtc->ops = &lpc32xx_rtc_ops;
+ rtc->rtc->range_max = U32_MAX;
+
+ err = rtc_register_device(rtc->rtc);
+ if (err)
+ return err;
/*
* IRQ is enabled after device registration in case alarm IRQ
* is pending upon suspend exit.
*/
- if (rtc->irq >= 0) {
+ rtc->irq = platform_get_irq(pdev, 0);
+ if (rtc->irq < 0) {
+ dev_warn(&pdev->dev, "Can't get interrupt resource\n");
+ } else {
if (devm_request_irq(&pdev->dev, rtc->irq,
lpc32xx_rtc_alarm_interrupt,
0, pdev->name, rtc) < 0) {
@@ -374,7 +359,7 @@ static struct platform_driver lpc32xx_rtc_driver = {
.probe = lpc32xx_rtc_probe,
.remove = lpc32xx_rtc_remove,
.driver = {
- .name = RTC_NAME,
+ .name = "rtc-lpc32xx",
.pm = LPC32XX_RTC_PM_OPS,
.of_match_table = of_match_ptr(lpc32xx_rtc_match),
},
diff --git a/drivers/rtc/rtc-mc13xxx.c b/drivers/rtc/rtc-mc13xxx.c
index 0fa33708fc49eeba5e0c92c35cde5e31409bccce..afce2c0b4bd6784a67ab061b54bef2ce26bd0154 100644
--- a/drivers/rtc/rtc-mc13xxx.c
+++ b/drivers/rtc/rtc-mc13xxx.c
@@ -1,12 +1,9 @@
+// SPDX-License-Identifier: GPL-2.0
/*
* Real Time Clock driver for Freescale MC13XXX PMIC
*
* (C) 2009 Sascha Hauer, Pengutronix
* (C) 2009 Uwe Kleine-Koenig, Pengutronix
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License version 2 as
- * published by the Free Software Foundation.
*/
#include <linux/mfd/mc13xxx.h>
@@ -89,14 +86,14 @@ static int mc13xxx_rtc_read_time(struct device *dev, struct rtc_time *tm)
return 0;
}
-static int mc13xxx_rtc_set_mmss(struct device *dev, time64_t secs)
+static int mc13xxx_rtc_set_time(struct device *dev, struct rtc_time *tm)
{
struct mc13xxx_rtc *priv = dev_get_drvdata(dev);
unsigned int seconds, days;
unsigned int alarmseconds;
int ret;
- days = div_s64_rem(secs, SEC_PER_DAY, &seconds);
+ days = div_s64_rem(rtc_tm_to_time64(tm), SEC_PER_DAY, &seconds);
mc13xxx_lock(priv->mc13xxx);
@@ -158,7 +155,7 @@ static int mc13xxx_rtc_set_mmss(struct device *dev, time64_t secs)
static int mc13xxx_rtc_read_alarm(struct device *dev, struct rtc_wkalrm *alarm)
{
struct mc13xxx_rtc *priv = dev_get_drvdata(dev);
- unsigned seconds, days;
+ unsigned int seconds, days;
time64_t s1970;
int enabled, pending;
int ret;
@@ -253,7 +250,7 @@ static irqreturn_t mc13xxx_rtc_alarm_handler(int irq, void *dev)
static const struct rtc_class_ops mc13xxx_rtc_ops = {
.read_time = mc13xxx_rtc_read_time,
- .set_mmss64 = mc13xxx_rtc_set_mmss,
+ .set_time = mc13xxx_rtc_set_time,
.read_alarm = mc13xxx_rtc_read_alarm,
.set_alarm = mc13xxx_rtc_set_alarm,
.alarm_irq_enable = mc13xxx_rtc_alarm_irq_enable,
@@ -285,8 +282,15 @@ static int __init mc13xxx_rtc_probe(struct platform_device *pdev)
priv->mc13xxx = mc13xxx;
priv->valid = 1;
+ priv->rtc = devm_rtc_allocate_device(&pdev->dev);
+ if (IS_ERR(priv->rtc))
+ return PTR_ERR(priv->rtc);
platform_set_drvdata(pdev, priv);
+ priv->rtc->ops = &mc13xxx_rtc_ops;
+ /* 15bit days + hours, minutes, seconds */
+ priv->rtc->range_max = (timeu64_t)(1 << 15) * SEC_PER_DAY - 1;
+
mc13xxx_lock(mc13xxx);
mc13xxx_irq_ack(mc13xxx, MC13XXX_IRQ_RTCRST);
@@ -303,8 +307,9 @@ static int __init mc13xxx_rtc_probe(struct platform_device *pdev)
mc13xxx_unlock(mc13xxx);
- priv->rtc = devm_rtc_device_register(&pdev->dev, pdev->name,
- &mc13xxx_rtc_ops, THIS_MODULE);
+ ret = rtc_register_device(priv->rtc);
+ if (ret)
+ goto err_irq_request;
return 0;
diff --git a/drivers/rtc/rtc-mt6397.c b/drivers/rtc/rtc-mt6397.c
index e9a25ec4d434f9c30c9b6a46c272547374d8a026..c06cf5202e0297f591b8a703766d6e9c9a6f9af7 100644
--- a/drivers/rtc/rtc-mt6397.c
+++ b/drivers/rtc/rtc-mt6397.c
@@ -343,7 +343,7 @@ static int mtk_rtc_probe(struct platform_device *pdev)
if (ret) {
dev_err(&pdev->dev, "Failed to request alarm IRQ: %d: %d\n",
rtc->irq, ret);
- goto out_dispose_irq;
+ return ret;
}
device_init_wakeup(&pdev->dev, 1);
@@ -359,9 +359,7 @@ static int mtk_rtc_probe(struct platform_device *pdev)
return 0;
out_free_irq:
- free_irq(rtc->irq, rtc->rtc_dev);
-out_dispose_irq:
- irq_dispose_mapping(rtc->irq);
+ free_irq(rtc->irq, rtc);
return ret;
}
@@ -369,8 +367,7 @@ static int mtk_rtc_remove(struct platform_device *pdev)
{
struct mt6397_rtc *rtc = platform_get_drvdata(pdev);
- free_irq(rtc->irq, rtc->rtc_dev);
- irq_dispose_mapping(rtc->irq);
+ free_irq(rtc->irq, rtc);
return 0;
}
diff --git a/drivers/rtc/rtc-mv.c b/drivers/rtc/rtc-mv.c
index e7f14bd12fe378b9cd2d846bbea635b70b09e9b0..ab9db57a68349565401eebadcc486a1798d34f99 100644
--- a/drivers/rtc/rtc-mv.c
+++ b/drivers/rtc/rtc-mv.c
@@ -1,9 +1,6 @@
+// SPDX-License-Identifier: GPL-2.0
/*
* Driver for the RTC in Marvell SoCs.
- *
- * This file is licensed under the terms of the GNU General Public
- * License version 2. This program is licensed "as is" without any
- * warranty of any kind, whether express or implied.
*/
#include <linux/init.h>
@@ -60,7 +57,7 @@ static int mv_rtc_set_time(struct device *dev, struct rtc_time *tm)
rtc_reg = (bin2bcd(tm->tm_mday) << RTC_MDAY_OFFS) |
(bin2bcd(tm->tm_mon + 1) << RTC_MONTH_OFFS) |
- (bin2bcd(tm->tm_year % 100) << RTC_YEAR_OFFS);
+ (bin2bcd(tm->tm_year - 100) << RTC_YEAR_OFFS);
writel(rtc_reg, ioaddr + RTC_DATE_REG_OFFS);
return 0;
@@ -159,7 +156,7 @@ static int mv_rtc_set_alarm(struct device *dev, struct rtc_wkalrm *alm)
<< RTC_MONTH_OFFS;
if (alm->time.tm_year >= 0)
- rtc_reg |= (RTC_ALARM_VALID | bin2bcd(alm->time.tm_year % 100))
+ rtc_reg |= (RTC_ALARM_VALID | bin2bcd(alm->time.tm_year - 100))
<< RTC_YEAR_OFFS;
writel(rtc_reg, ioaddr + RTC_ALARM_DATE_REG_OFFS);
@@ -257,15 +254,7 @@ static int __init mv_rtc_probe(struct platform_device *pdev)
platform_set_drvdata(pdev, pdata);
- if (pdata->irq >= 0) {
- device_init_wakeup(&pdev->dev, 1);
- pdata->rtc = devm_rtc_device_register(&pdev->dev, pdev->name,
- &mv_rtc_alarm_ops,
- THIS_MODULE);
- } else {
- pdata->rtc = devm_rtc_device_register(&pdev->dev, pdev->name,
- &mv_rtc_ops, THIS_MODULE);
- }
+ pdata->rtc = devm_rtc_allocate_device(&pdev->dev);
if (IS_ERR(pdata->rtc)) {
ret = PTR_ERR(pdata->rtc);
goto out;
@@ -281,7 +270,19 @@ static int __init mv_rtc_probe(struct platform_device *pdev)
}
}
- return 0;
+ if (pdata->irq >= 0) {
+ device_init_wakeup(&pdev->dev, 1);
+ pdata->rtc->ops = &mv_rtc_alarm_ops;
+ } else {
+ pdata->rtc->ops = &mv_rtc_ops;
+ }
+
+ pdata->rtc->range_min = RTC_TIMESTAMP_BEGIN_2000;
+ pdata->rtc->range_max = RTC_TIMESTAMP_END_2099;
+
+ ret = rtc_register_device(pdata->rtc);
+ if (!ret)
+ return 0;
out:
if (!IS_ERR(pdata->clk))
clk_disable_unprepare(pdata->clk);
diff --git a/drivers/rtc/rtc-mxc.c b/drivers/rtc/rtc-mxc.c
index 878c6ee829019d3a709a50924301e3dc39c12fb8..e697e96612bb409d26b2bb37e3b19f7c76baf101 100644
--- a/drivers/rtc/rtc-mxc.c
+++ b/drivers/rtc/rtc-mxc.c
@@ -8,6 +8,7 @@
#include <linux/slab.h>
#include <linux/interrupt.h>
#include <linux/platform_device.h>
+#include <linux/pm_wakeirq.h>
#include <linux/clk.h>
#include <linux/of.h>
#include <linux/of_device.h>
@@ -253,20 +254,9 @@ static int mxc_rtc_read_time(struct device *dev, struct rtc_time *tm)
/*
* This function sets the internal RTC time based on tm in Gregorian date.
*/
-static int mxc_rtc_set_mmss(struct device *dev, time64_t time)
+static int mxc_rtc_set_time(struct device *dev, struct rtc_time *tm)
{
- struct rtc_plat_data *pdata = dev_get_drvdata(dev);
-
- /*
- * TTC_DAYR register is 9-bit in MX1 SoC, save time and day of year only
- */
- if (is_imx1_rtc(pdata)) {
- struct rtc_time tm;
-
- rtc_time64_to_tm(time, &tm);
- tm.tm_year = 70;
- time = rtc_tm_to_time64(&tm);
- }
+ time64_t time = rtc_tm_to_time64(tm);
/* Avoid roll-over from reading the different registers */
do {
@@ -310,7 +300,7 @@ static int mxc_rtc_set_alarm(struct device *dev, struct rtc_wkalrm *alrm)
/* RTC layer */
static const struct rtc_class_ops mxc_rtc_ops = {
.read_time = mxc_rtc_read_time,
- .set_mmss64 = mxc_rtc_set_mmss,
+ .set_time = mxc_rtc_set_time,
.read_alarm = mxc_rtc_read_alarm,
.set_alarm = mxc_rtc_set_alarm,
.alarm_irq_enable = mxc_rtc_alarm_irq_enable,
@@ -318,7 +308,6 @@ static const struct rtc_class_ops mxc_rtc_ops = {
static int mxc_rtc_probe(struct platform_device *pdev)
{
- struct resource *res;
struct rtc_device *rtc;
struct rtc_plat_data *pdata = NULL;
u32 reg;
@@ -336,11 +325,34 @@ static int mxc_rtc_probe(struct platform_device *pdev)
else
pdata->devtype = pdev->id_entry->driver_data;
- res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
- pdata->ioaddr = devm_ioremap_resource(&pdev->dev, res);
+ pdata->ioaddr = devm_platform_ioremap_resource(pdev, 0);
if (IS_ERR(pdata->ioaddr))
return PTR_ERR(pdata->ioaddr);
+ rtc = devm_rtc_allocate_device(&pdev->dev);
+ if (IS_ERR(rtc))
+ return PTR_ERR(rtc);
+
+ pdata->rtc = rtc;
+ rtc->ops = &mxc_rtc_ops;
+ if (is_imx1_rtc(pdata)) {
+ struct rtc_time tm;
+
+ /* 9bit days + hours minutes seconds */
+ rtc->range_max = (1 << 9) * 86400 - 1;
+
+ /*
+ * Set the start date as beginning of the current year. This can
+ * be overridden using device tree.
+ */
+ rtc_time64_to_tm(ktime_get_real_seconds(), &tm);
+ rtc->start_secs = mktime64(tm.tm_year, 1, 1, 0, 0, 0);
+ rtc->set_start_time = true;
+ } else {
+ /* 16bit days + hours minutes seconds */
+ rtc->range_max = (1 << 16) * 86400ULL - 1;
+ }
+
pdata->clk_ipg = devm_clk_get(&pdev->dev, "ipg");
if (IS_ERR(pdata->clk_ipg)) {
dev_err(&pdev->dev, "unable to get ipg clock!\n");
@@ -396,17 +408,16 @@ static int mxc_rtc_probe(struct platform_device *pdev)
pdata->irq = -1;
}
- if (pdata->irq >= 0)
+ if (pdata->irq >= 0) {
device_init_wakeup(&pdev->dev, 1);
-
- rtc = devm_rtc_device_register(&pdev->dev, pdev->name, &mxc_rtc_ops,
- THIS_MODULE);
- if (IS_ERR(rtc)) {
- ret = PTR_ERR(rtc);
- goto exit_put_clk_ref;
+ ret = dev_pm_set_wake_irq(&pdev->dev, pdata->irq);
+ if (ret)
+ dev_err(&pdev->dev, "failed to enable irq wake\n");
}
- pdata->rtc = rtc;
+ ret = rtc_register_device(rtc);
+ if (ret)
+ goto exit_put_clk_ref;
return 0;
@@ -428,35 +439,10 @@ static int mxc_rtc_remove(struct platform_device *pdev)
return 0;
}
-#ifdef CONFIG_PM_SLEEP
-static int mxc_rtc_suspend(struct device *dev)
-{
- struct rtc_plat_data *pdata = dev_get_drvdata(dev);
-
- if (device_may_wakeup(dev))
- enable_irq_wake(pdata->irq);
-
- return 0;
-}
-
-static int mxc_rtc_resume(struct device *dev)
-{
- struct rtc_plat_data *pdata = dev_get_drvdata(dev);
-
- if (device_may_wakeup(dev))
- disable_irq_wake(pdata->irq);
-
- return 0;
-}
-#endif
-
-static SIMPLE_DEV_PM_OPS(mxc_rtc_pm_ops, mxc_rtc_suspend, mxc_rtc_resume);
-
static struct platform_driver mxc_rtc_driver = {
.driver = {
.name = "mxc_rtc",
.of_match_table = of_match_ptr(imx_rtc_dt_ids),
- .pm = &mxc_rtc_pm_ops,
},
.id_table = imx_rtc_devtype,
.probe = mxc_rtc_probe,
diff --git a/drivers/rtc/rtc-mxc_v2.c b/drivers/rtc/rtc-mxc_v2.c
index 007879a5042dd624e783bc8d9cfad730c3338c66..5b970a816631e12c18f447fc4045b7adcd701a90 100644
--- a/drivers/rtc/rtc-mxc_v2.c
+++ b/drivers/rtc/rtc-mxc_v2.c
@@ -10,6 +10,7 @@
#include <linux/module.h>
#include <linux/mod_devicetable.h>
#include <linux/platform_device.h>
+#include <linux/pm_wakeirq.h>
#include <linux/rtc.h>
#define SRTC_LPPDR_INIT 0x41736166 /* init for glitch detect */
@@ -305,6 +306,9 @@ static int mxc_rtc_probe(struct platform_device *pdev)
return pdata->irq;
device_init_wakeup(&pdev->dev, 1);
+ ret = dev_pm_set_wake_irq(&pdev->dev, pdata->irq);
+ if (ret)
+ dev_err(&pdev->dev, "failed to enable irq wake\n");
ret = clk_prepare_enable(pdata->clk);
if (ret)
@@ -367,30 +371,6 @@ static int mxc_rtc_remove(struct platform_device *pdev)
return 0;
}
-#ifdef CONFIG_PM_SLEEP
-static int mxc_rtc_suspend(struct device *dev)
-{
- struct mxc_rtc_data *pdata = dev_get_drvdata(dev);
-
- if (device_may_wakeup(dev))
- enable_irq_wake(pdata->irq);
-
- return 0;
-}
-
-static int mxc_rtc_resume(struct device *dev)
-{
- struct mxc_rtc_data *pdata = dev_get_drvdata(dev);
-
- if (device_may_wakeup(dev))
- disable_irq_wake(pdata->irq);
-
- return 0;
-}
-#endif
-
-static SIMPLE_DEV_PM_OPS(mxc_rtc_pm_ops, mxc_rtc_suspend, mxc_rtc_resume);
-
static const struct of_device_id mxc_ids[] = {
{ .compatible = "fsl,imx53-rtc", },
{}
@@ -400,7 +380,6 @@ static struct platform_driver mxc_rtc_driver = {
.driver = {
.name = "mxc_rtc_v2",
.of_match_table = mxc_ids,
- .pm = &mxc_rtc_pm_ops,
},
.probe = mxc_rtc_probe,
.remove = mxc_rtc_remove,
diff --git a/drivers/rtc/rtc-omap.c b/drivers/rtc/rtc-omap.c
index bbff0e2deb844de230720dd807faf7de8737e550..32994b0dd1390e3d598e7e0885cf9b4a536d6caa 100644
--- a/drivers/rtc/rtc-omap.c
+++ b/drivers/rtc/rtc-omap.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0+
/*
* TI OMAP Real Time Clock interface for Linux
*
@@ -6,11 +7,6 @@
*
* Copyright (C) 2006 David Brownell (new RTC framework)
* Copyright (C) 2014 Johan Hovold <johan@kernel.org>
- *
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version
- * 2 of the License, or (at your option) any later version.
*/
#include <dt-bindings/gpio/gpio.h>
@@ -271,7 +267,7 @@ static int omap_rtc_alarm_irq_enable(struct device *dev, unsigned int enabled)
}
/* this hardware doesn't support "don't care" alarm fields */
-static int tm2bcd(struct rtc_time *tm)
+static void tm2bcd(struct rtc_time *tm)
{
tm->tm_sec = bin2bcd(tm->tm_sec);
tm->tm_min = bin2bcd(tm->tm_min);
@@ -279,13 +275,7 @@ static int tm2bcd(struct rtc_time *tm)
tm->tm_mday = bin2bcd(tm->tm_mday);
tm->tm_mon = bin2bcd(tm->tm_mon + 1);
-
- /* epoch == 1900 */
- if (tm->tm_year < 100 || tm->tm_year > 199)
- return -EINVAL;
tm->tm_year = bin2bcd(tm->tm_year - 100);
-
- return 0;
}
static void bcd2tm(struct rtc_time *tm)
@@ -328,8 +318,7 @@ static int omap_rtc_set_time(struct device *dev, struct rtc_time *tm)
{
struct omap_rtc *rtc = dev_get_drvdata(dev);
- if (tm2bcd(tm) < 0)
- return -EINVAL;
+ tm2bcd(tm);
local_irq_disable();
rtc_wait_not_busy(rtc);
@@ -378,8 +367,7 @@ static int omap_rtc_set_alarm(struct device *dev, struct rtc_wkalrm *alm)
struct omap_rtc *rtc = dev_get_drvdata(dev);
u8 reg, irqwake_reg = 0;
- if (tm2bcd(&alm->time) < 0)
- return -EINVAL;
+ tm2bcd(&alm->time);
local_irq_disable();
rtc_wait_not_busy(rtc);
@@ -441,14 +429,10 @@ static void omap_rtc_power_off(void)
omap_rtc_read_time_raw(rtc, &tm);
seconds = tm.tm_sec;
bcd2tm(&tm);
- rtc_tm_to_time(&tm, &now);
- rtc_time_to_tm(now + 1, &tm);
+ now = rtc_tm_to_time64(&tm);
+ rtc_time64_to_tm(now + 1, &tm);
- if (tm2bcd(&tm) < 0) {
- dev_err(&rtc->rtc->dev, "power off failed\n");
- rtc->type->lock(rtc);
- return;
- }
+ tm2bcd(&tm);
rtc_wait_not_busy(rtc);
@@ -845,6 +829,8 @@ static int omap_rtc_probe(struct platform_device *pdev)
}
rtc->rtc->ops = &omap_rtc_ops;
+ rtc->rtc->range_min = RTC_TIMESTAMP_BEGIN_2000;
+ rtc->rtc->range_max = RTC_TIMESTAMP_END_2099;
omap_rtc_nvmem_config.priv = rtc;
/* handle periodic and alarm irqs */
diff --git a/drivers/rtc/rtc-opal.c b/drivers/rtc/rtc-opal.c
index 60f2250fd96bec2cec1dd33f652edaac474d2182..3dd9d266ce096cd484f9724bf30be250f5a5517e 100644
--- a/drivers/rtc/rtc-opal.c
+++ b/drivers/rtc/rtc-opal.c
@@ -224,7 +224,7 @@ static int opal_set_tpo_time(struct device *dev, struct rtc_wkalrm *alarm)
return rc;
}
-int opal_tpo_alarm_irq_enable(struct device *dev, unsigned int enabled)
+static int opal_tpo_alarm_irq_enable(struct device *dev, unsigned int enabled)
{
struct rtc_wkalrm alarm = { .enabled = 0 };
diff --git a/drivers/rtc/rtc-pcap.c b/drivers/rtc/rtc-pcap.c
index f176cb9d0dbca75182b307e188454aac4acc54bd..178bfb1dea2140540fa78dff951ebfc64816087f 100644
--- a/drivers/rtc/rtc-pcap.c
+++ b/drivers/rtc/rtc-pcap.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0
/*
* pcap rtc code for Motorola EZX phones
*
@@ -5,11 +6,6 @@
* Copyright (c) 2009 Daniel Ribeiro <drwyrm@gmail.com>
*
* Based on Motorola's rtc.c Copyright (c) 2003-2005 Motorola
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License version 2 as
- * published by the Free Software Foundation.
- *
*/
#include <linux/kernel.h>
@@ -55,7 +51,7 @@ static int pcap_rtc_read_alarm(struct device *dev, struct rtc_wkalrm *alrm)
ezx_pcap_read(pcap_rtc->pcap, PCAP_REG_RTC_DAYA, &days);
secs += (days & PCAP_RTC_DAY_MASK) * SEC_PER_DAY;
- rtc_time_to_tm(secs, tm);
+ rtc_time64_to_tm(secs, tm);
return 0;
}
@@ -63,12 +59,9 @@ static int pcap_rtc_read_alarm(struct device *dev, struct rtc_wkalrm *alrm)
static int pcap_rtc_set_alarm(struct device *dev, struct rtc_wkalrm *alrm)
{
struct pcap_rtc *pcap_rtc = dev_get_drvdata(dev);
- struct rtc_time *tm = &alrm->time;
- unsigned long secs;
+ unsigned long secs = rtc_tm_to_time64(&alrm->time);
u32 tod, days;
- rtc_tm_to_time(tm, &secs);
-
tod = secs % SEC_PER_DAY;
ezx_pcap_write(pcap_rtc->pcap, PCAP_REG_RTC_TODA, tod);
@@ -90,14 +83,15 @@ static int pcap_rtc_read_time(struct device *dev, struct rtc_time *tm)
ezx_pcap_read(pcap_rtc->pcap, PCAP_REG_RTC_DAY, &days);
secs += (days & PCAP_RTC_DAY_MASK) * SEC_PER_DAY;
- rtc_time_to_tm(secs, tm);
+ rtc_time64_to_tm(secs, tm);
return 0;
}
-static int pcap_rtc_set_mmss(struct device *dev, unsigned long secs)
+static int pcap_rtc_set_time(struct device *dev, struct rtc_time *tm)
{
struct pcap_rtc *pcap_rtc = dev_get_drvdata(dev);
+ unsigned long secs = rtc_tm_to_time64(tm);
u32 tod, days;
tod = secs % SEC_PER_DAY;
@@ -128,9 +122,9 @@ static int pcap_rtc_alarm_irq_enable(struct device *dev, unsigned int en)
static const struct rtc_class_ops pcap_rtc_ops = {
.read_time = pcap_rtc_read_time,
+ .set_time = pcap_rtc_set_time,
.read_alarm = pcap_rtc_read_alarm,
.set_alarm = pcap_rtc_set_alarm,
- .set_mmss = pcap_rtc_set_mmss,
.alarm_irq_enable = pcap_rtc_alarm_irq_enable,
};
@@ -149,11 +143,13 @@ static int __init pcap_rtc_probe(struct platform_device *pdev)
platform_set_drvdata(pdev, pcap_rtc);
- pcap_rtc->rtc = devm_rtc_device_register(&pdev->dev, "pcap",
- &pcap_rtc_ops, THIS_MODULE);
+ pcap_rtc->rtc = devm_rtc_allocate_device(&pdev->dev);
if (IS_ERR(pcap_rtc->rtc))
return PTR_ERR(pcap_rtc->rtc);
+ pcap_rtc->rtc->ops = &pcap_rtc_ops;
+ pcap_rtc->rtc->range_max = (1 << 14) * 86400ULL - 1;
+
timer_irq = pcap_to_irq(pcap_rtc->pcap, PCAP_IRQ_1HZ);
alarm_irq = pcap_to_irq(pcap_rtc->pcap, PCAP_IRQ_TODA);
@@ -167,7 +163,7 @@ static int __init pcap_rtc_probe(struct platform_device *pdev)
if (err)
return err;
- return 0;
+ return rtc_register_device(pcap_rtc->rtc);
}
static int __exit pcap_rtc_remove(struct platform_device *pdev)
diff --git a/drivers/rtc/rtc-pcf85063.c b/drivers/rtc/rtc-pcf85063.c
index f6ce63c443a05d871ba5abf94671fa0fa0ed3a7d..1afa6d9fa9fb26126a0ad6691f7f9765a36bab71 100644
--- a/drivers/rtc/rtc-pcf85063.c
+++ b/drivers/rtc/rtc-pcf85063.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0
/*
* An I2C driver for the PCF85063 RTC
* Copyright 2014 Rose Technology
@@ -5,16 +6,16 @@
* Author: Søren Andersen <san@rosetechnology.dk>
* Maintainers: http://www.nslu2-linux.org/
*
- * based on the other drivers in this same directory.
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License version 2 as
- * published by the Free Software Foundation.
+ * Copyright (C) 2019 Micro Crystal AG
+ * Author: Alexandre Belloni <alexandre.belloni@bootlin.com>
*/
#include <linux/i2c.h>
#include <linux/bcd.h>
#include <linux/rtc.h>
#include <linux/module.h>
+#include <linux/of_device.h>
+#include <linux/pm_wakeirq.h>
+#include <linux/regmap.h>
/*
* Information for this driver was pulled from the following datasheets.
@@ -24,61 +25,47 @@
*
* PCF85063A -- Rev. 6 — 18 November 2015
* PCF85063TP -- Rev. 4 — 6 May 2015
-*/
+ *
+ * https://www.microcrystal.com/fileadmin/Media/Products/RTC/App.Manual/RV-8263-C7_App-Manual.pdf
+ * RV8263 -- Rev. 1.0 — January 2019
+ */
#define PCF85063_REG_CTRL1 0x00 /* status */
#define PCF85063_REG_CTRL1_CAP_SEL BIT(0)
#define PCF85063_REG_CTRL1_STOP BIT(5)
-#define PCF85063_REG_SC 0x04 /* datetime */
-#define PCF85063_REG_SC_OS 0x80
-
-static struct i2c_driver pcf85063_driver;
-
-static int pcf85063_stop_clock(struct i2c_client *client, u8 *ctrl1)
-{
- int rc;
- u8 reg;
+#define PCF85063_REG_CTRL2 0x01
+#define PCF85063_CTRL2_AF BIT(6)
+#define PCF85063_CTRL2_AIE BIT(7)
- rc = i2c_smbus_read_byte_data(client, PCF85063_REG_CTRL1);
- if (rc < 0) {
- dev_err(&client->dev, "Failing to stop the clock\n");
- return -EIO;
- }
+#define PCF85063_REG_OFFSET 0x02
+#define PCF85063_OFFSET_SIGN_BIT 6 /* 2's complement sign bit */
+#define PCF85063_OFFSET_MODE BIT(7)
+#define PCF85063_OFFSET_STEP0 4340
+#define PCF85063_OFFSET_STEP1 4069
- /* stop the clock */
- reg = rc | PCF85063_REG_CTRL1_STOP;
+#define PCF85063_REG_RAM 0x03
- rc = i2c_smbus_write_byte_data(client, PCF85063_REG_CTRL1, reg);
- if (rc < 0) {
- dev_err(&client->dev, "Failing to stop the clock\n");
- return -EIO;
- }
-
- *ctrl1 = reg;
-
- return 0;
-}
-
-static int pcf85063_start_clock(struct i2c_client *client, u8 ctrl1)
-{
- int rc;
+#define PCF85063_REG_SC 0x04 /* datetime */
+#define PCF85063_REG_SC_OS 0x80
- /* start the clock */
- ctrl1 &= ~PCF85063_REG_CTRL1_STOP;
+#define PCF85063_REG_ALM_S 0x0b
+#define PCF85063_AEN BIT(7)
- rc = i2c_smbus_write_byte_data(client, PCF85063_REG_CTRL1, ctrl1);
- if (rc < 0) {
- dev_err(&client->dev, "Failing to start the clock\n");
- return -EIO;
- }
+struct pcf85063_config {
+ struct regmap_config regmap;
+ unsigned has_alarms:1;
+ unsigned force_cap_7000:1;
+};
- return 0;
-}
+struct pcf85063 {
+ struct rtc_device *rtc;
+ struct regmap *regmap;
+};
static int pcf85063_rtc_read_time(struct device *dev, struct rtc_time *tm)
{
- struct i2c_client *client = to_i2c_client(dev);
+ struct pcf85063 *pcf85063 = dev_get_drvdata(dev);
int rc;
u8 regs[7];
@@ -88,16 +75,14 @@ static int pcf85063_rtc_read_time(struct device *dev, struct rtc_time *tm)
* event, the access must be finished within one second. So, read all
* time/date registers in one turn.
*/
- rc = i2c_smbus_read_i2c_block_data(client, PCF85063_REG_SC,
- sizeof(regs), regs);
- if (rc != sizeof(regs)) {
- dev_err(&client->dev, "date/time register read error\n");
- return -EIO;
- }
+ rc = regmap_bulk_read(pcf85063->regmap, PCF85063_REG_SC, regs,
+ sizeof(regs));
+ if (rc)
+ return rc;
/* if the clock has lost its power it makes no sense to use its time */
if (regs[0] & PCF85063_REG_SC_OS) {
- dev_warn(&client->dev, "Power loss detected, invalid time\n");
+ dev_warn(&pcf85063->rtc->dev, "Power loss detected, invalid time\n");
return -EINVAL;
}
@@ -115,20 +100,18 @@ static int pcf85063_rtc_read_time(struct device *dev, struct rtc_time *tm)
static int pcf85063_rtc_set_time(struct device *dev, struct rtc_time *tm)
{
- struct i2c_client *client = to_i2c_client(dev);
+ struct pcf85063 *pcf85063 = dev_get_drvdata(dev);
int rc;
u8 regs[7];
- u8 ctrl1;
-
- if ((tm->tm_year < 100) || (tm->tm_year > 199))
- return -EINVAL;
/*
* to accurately set the time, reset the divider chain and keep it in
* reset state until all time/date registers are written
*/
- rc = pcf85063_stop_clock(client, &ctrl1);
- if (rc != 0)
+ rc = regmap_update_bits(pcf85063->regmap, PCF85063_REG_CTRL1,
+ PCF85063_REG_CTRL1_STOP,
+ PCF85063_REG_CTRL1_STOP);
+ if (rc)
return rc;
/* hours, minutes and seconds */
@@ -150,101 +133,351 @@ static int pcf85063_rtc_set_time(struct device *dev, struct rtc_time *tm)
regs[6] = bin2bcd(tm->tm_year - 100);
/* write all registers at once */
- rc = i2c_smbus_write_i2c_block_data(client, PCF85063_REG_SC,
- sizeof(regs), regs);
- if (rc < 0) {
- dev_err(&client->dev, "date/time register write error\n");
+ rc = regmap_bulk_write(pcf85063->regmap, PCF85063_REG_SC,
+ regs, sizeof(regs));
+ if (rc)
return rc;
- }
/*
* Write the control register as a separate action since the size of
* the register space is different between the PCF85063TP and
* PCF85063A devices. The rollover point can not be used.
*/
- rc = pcf85063_start_clock(client, ctrl1);
- if (rc != 0)
- return rc;
+ return regmap_update_bits(pcf85063->regmap, PCF85063_REG_CTRL1,
+ PCF85063_REG_CTRL1_STOP, 0);
+}
+
+static int pcf85063_rtc_read_alarm(struct device *dev, struct rtc_wkalrm *alrm)
+{
+ struct pcf85063 *pcf85063 = dev_get_drvdata(dev);
+ u8 buf[4];
+ unsigned int val;
+ int ret;
+
+ ret = regmap_bulk_read(pcf85063->regmap, PCF85063_REG_ALM_S,
+ buf, sizeof(buf));
+ if (ret)
+ return ret;
+
+ alrm->time.tm_sec = bcd2bin(buf[0]);
+ alrm->time.tm_min = bcd2bin(buf[1]);
+ alrm->time.tm_hour = bcd2bin(buf[2]);
+ alrm->time.tm_mday = bcd2bin(buf[3]);
+
+ ret = regmap_read(pcf85063->regmap, PCF85063_REG_CTRL2, &val);
+ if (ret)
+ return ret;
+
+ alrm->enabled = !!(val & PCF85063_CTRL2_AIE);
return 0;
}
+static int pcf85063_rtc_set_alarm(struct device *dev, struct rtc_wkalrm *alrm)
+{
+ struct pcf85063 *pcf85063 = dev_get_drvdata(dev);
+ u8 buf[5];
+ int ret;
+
+ buf[0] = bin2bcd(alrm->time.tm_sec);
+ buf[1] = bin2bcd(alrm->time.tm_min);
+ buf[2] = bin2bcd(alrm->time.tm_hour);
+ buf[3] = bin2bcd(alrm->time.tm_mday);
+ buf[4] = PCF85063_AEN; /* Do not match on week day */
+
+ ret = regmap_update_bits(pcf85063->regmap, PCF85063_REG_CTRL2,
+ PCF85063_CTRL2_AIE | PCF85063_CTRL2_AF, 0);
+ if (ret)
+ return ret;
+
+ ret = regmap_bulk_write(pcf85063->regmap, PCF85063_REG_ALM_S,
+ buf, sizeof(buf));
+ if (ret)
+ return ret;
+
+ return regmap_update_bits(pcf85063->regmap, PCF85063_REG_CTRL2,
+ PCF85063_CTRL2_AIE | PCF85063_CTRL2_AF,
+ alrm->enabled ? PCF85063_CTRL2_AIE | PCF85063_CTRL2_AF : PCF85063_CTRL2_AF);
+}
+
+static int pcf85063_rtc_alarm_irq_enable(struct device *dev,
+ unsigned int enabled)
+{
+ struct pcf85063 *pcf85063 = dev_get_drvdata(dev);
+
+ return regmap_update_bits(pcf85063->regmap, PCF85063_REG_CTRL2,
+ PCF85063_CTRL2_AIE,
+ enabled ? PCF85063_CTRL2_AIE : 0);
+}
+
+static irqreturn_t pcf85063_rtc_handle_irq(int irq, void *dev_id)
+{
+ struct pcf85063 *pcf85063 = dev_id;
+ unsigned int val;
+ int err;
+
+ err = regmap_read(pcf85063->regmap, PCF85063_REG_CTRL2, &val);
+ if (err)
+ return IRQ_NONE;
+
+ if (val & PCF85063_CTRL2_AF) {
+ rtc_update_irq(pcf85063->rtc, 1, RTC_IRQF | RTC_AF);
+ regmap_update_bits(pcf85063->regmap, PCF85063_REG_CTRL2,
+ PCF85063_CTRL2_AIE | PCF85063_CTRL2_AF,
+ 0);
+ return IRQ_HANDLED;
+ }
+
+ return IRQ_NONE;
+}
+
+static int pcf85063_read_offset(struct device *dev, long *offset)
+{
+ struct pcf85063 *pcf85063 = dev_get_drvdata(dev);
+ long val;
+ u32 reg;
+ int ret;
+
+ ret = regmap_read(pcf85063->regmap, PCF85063_REG_OFFSET, ®);
+ if (ret < 0)
+ return ret;
+
+ val = sign_extend32(reg & ~PCF85063_OFFSET_MODE,
+ PCF85063_OFFSET_SIGN_BIT);
+
+ if (reg & PCF85063_OFFSET_MODE)
+ *offset = val * PCF85063_OFFSET_STEP1;
+ else
+ *offset = val * PCF85063_OFFSET_STEP0;
+
+ return 0;
+}
+
+static int pcf85063_set_offset(struct device *dev, long offset)
+{
+ struct pcf85063 *pcf85063 = dev_get_drvdata(dev);
+ s8 mode0, mode1, reg;
+ unsigned int error0, error1;
+
+ if (offset > PCF85063_OFFSET_STEP0 * 63)
+ return -ERANGE;
+ if (offset < PCF85063_OFFSET_STEP0 * -64)
+ return -ERANGE;
+
+ mode0 = DIV_ROUND_CLOSEST(offset, PCF85063_OFFSET_STEP0);
+ mode1 = DIV_ROUND_CLOSEST(offset, PCF85063_OFFSET_STEP1);
+
+ error0 = abs(offset - (mode0 * PCF85063_OFFSET_STEP0));
+ error1 = abs(offset - (mode1 * PCF85063_OFFSET_STEP1));
+ if (mode1 > 63 || mode1 < -64 || error0 < error1)
+ reg = mode0 & ~PCF85063_OFFSET_MODE;
+ else
+ reg = mode1 | PCF85063_OFFSET_MODE;
+
+ return regmap_write(pcf85063->regmap, PCF85063_REG_OFFSET, reg);
+}
+
+static int pcf85063_ioctl(struct device *dev, unsigned int cmd,
+ unsigned long arg)
+{
+ struct pcf85063 *pcf85063 = dev_get_drvdata(dev);
+ int status, ret = 0;
+
+ switch (cmd) {
+ case RTC_VL_READ:
+ ret = regmap_read(pcf85063->regmap, PCF85063_REG_SC, &status);
+ if (ret < 0)
+ return ret;
+
+ if (status & PCF85063_REG_SC_OS)
+ dev_warn(&pcf85063->rtc->dev, "Voltage low, data loss detected.\n");
+
+ status &= PCF85063_REG_SC_OS;
+
+ if (copy_to_user((void __user *)arg, &status, sizeof(int)))
+ return -EFAULT;
+
+ return 0;
+
+ case RTC_VL_CLR:
+ ret = regmap_update_bits(pcf85063->regmap, PCF85063_REG_SC,
+ PCF85063_REG_SC_OS, 0);
+
+ return ret;
+
+ default:
+ return -ENOIOCTLCMD;
+ }
+}
+
static const struct rtc_class_ops pcf85063_rtc_ops = {
.read_time = pcf85063_rtc_read_time,
- .set_time = pcf85063_rtc_set_time
+ .set_time = pcf85063_rtc_set_time,
+ .read_offset = pcf85063_read_offset,
+ .set_offset = pcf85063_set_offset,
+ .ioctl = pcf85063_ioctl,
+};
+
+static const struct rtc_class_ops pcf85063_rtc_ops_alarm = {
+ .read_time = pcf85063_rtc_read_time,
+ .set_time = pcf85063_rtc_set_time,
+ .read_offset = pcf85063_read_offset,
+ .set_offset = pcf85063_set_offset,
+ .read_alarm = pcf85063_rtc_read_alarm,
+ .set_alarm = pcf85063_rtc_set_alarm,
+ .alarm_irq_enable = pcf85063_rtc_alarm_irq_enable,
+ .ioctl = pcf85063_ioctl,
};
-static int pcf85063_load_capacitance(struct i2c_client *client)
+static int pcf85063_nvmem_read(void *priv, unsigned int offset,
+ void *val, size_t bytes)
{
- u32 load;
- int rc;
- u8 reg;
+ return regmap_read(priv, PCF85063_REG_RAM, val);
+}
- rc = i2c_smbus_read_byte_data(client, PCF85063_REG_CTRL1);
- if (rc < 0)
- return rc;
+static int pcf85063_nvmem_write(void *priv, unsigned int offset,
+ void *val, size_t bytes)
+{
+ return regmap_write(priv, PCF85063_REG_RAM, *(u8 *)val);
+}
- reg = rc;
- load = 7000;
- of_property_read_u32(client->dev.of_node, "quartz-load-femtofarads",
- &load);
+static int pcf85063_load_capacitance(struct pcf85063 *pcf85063,
+ const struct device_node *np,
+ unsigned int force_cap)
+{
+ u32 load = 7000;
+ u8 reg = 0;
+
+ if (force_cap)
+ load = force_cap;
+ else
+ of_property_read_u32(np, "quartz-load-femtofarads", &load);
switch (load) {
default:
- dev_warn(&client->dev, "Unknown quartz-load-femtofarads value: %d. Assuming 7000",
+ dev_warn(&pcf85063->rtc->dev, "Unknown quartz-load-femtofarads value: %d. Assuming 7000",
load);
/* fall through */
case 7000:
- reg &= ~PCF85063_REG_CTRL1_CAP_SEL;
break;
case 12500:
- reg |= PCF85063_REG_CTRL1_CAP_SEL;
+ reg = PCF85063_REG_CTRL1_CAP_SEL;
break;
}
- rc = i2c_smbus_write_byte_data(client, PCF85063_REG_CTRL1, reg);
-
- return rc;
+ return regmap_update_bits(pcf85063->regmap, PCF85063_REG_CTRL1,
+ PCF85063_REG_CTRL1_CAP_SEL, reg);
}
-static int pcf85063_probe(struct i2c_client *client,
- const struct i2c_device_id *id)
+static const struct pcf85063_config pcf85063a_config = {
+ .regmap = {
+ .reg_bits = 8,
+ .val_bits = 8,
+ .max_register = 0x11,
+ },
+ .has_alarms = 1,
+};
+
+static const struct pcf85063_config pcf85063tp_config = {
+ .regmap = {
+ .reg_bits = 8,
+ .val_bits = 8,
+ .max_register = 0x0a,
+ },
+};
+
+static const struct pcf85063_config rv8263_config = {
+ .regmap = {
+ .reg_bits = 8,
+ .val_bits = 8,
+ .max_register = 0x11,
+ },
+ .has_alarms = 1,
+ .force_cap_7000 = 1,
+};
+
+static int pcf85063_probe(struct i2c_client *client)
{
- struct rtc_device *rtc;
+ struct pcf85063 *pcf85063;
+ unsigned int tmp;
int err;
+ const struct pcf85063_config *config = &pcf85063tp_config;
+ const void *data = of_device_get_match_data(&client->dev);
+ struct nvmem_config nvmem_cfg = {
+ .name = "pcf85063_nvram",
+ .reg_read = pcf85063_nvmem_read,
+ .reg_write = pcf85063_nvmem_write,
+ .type = NVMEM_TYPE_BATTERY_BACKED,
+ .size = 1,
+ };
dev_dbg(&client->dev, "%s\n", __func__);
- if (!i2c_check_functionality(client->adapter, I2C_FUNC_I2C))
- return -ENODEV;
+ pcf85063 = devm_kzalloc(&client->dev, sizeof(struct pcf85063),
+ GFP_KERNEL);
+ if (!pcf85063)
+ return -ENOMEM;
+
+ if (data)
+ config = data;
+
+ pcf85063->regmap = devm_regmap_init_i2c(client, &config->regmap);
+ if (IS_ERR(pcf85063->regmap))
+ return PTR_ERR(pcf85063->regmap);
- err = i2c_smbus_read_byte_data(client, PCF85063_REG_CTRL1);
- if (err < 0) {
+ i2c_set_clientdata(client, pcf85063);
+
+ err = regmap_read(pcf85063->regmap, PCF85063_REG_CTRL1, &tmp);
+ if (err) {
dev_err(&client->dev, "RTC chip is not present\n");
return err;
}
- err = pcf85063_load_capacitance(client);
+ pcf85063->rtc = devm_rtc_allocate_device(&client->dev);
+ if (IS_ERR(pcf85063->rtc))
+ return PTR_ERR(pcf85063->rtc);
+
+ err = pcf85063_load_capacitance(pcf85063, client->dev.of_node,
+ config->force_cap_7000 ? 7000 : 0);
if (err < 0)
dev_warn(&client->dev, "failed to set xtal load capacitance: %d",
err);
- rtc = devm_rtc_device_register(&client->dev,
- pcf85063_driver.driver.name,
- &pcf85063_rtc_ops, THIS_MODULE);
+ pcf85063->rtc->ops = &pcf85063_rtc_ops;
+ pcf85063->rtc->range_min = RTC_TIMESTAMP_BEGIN_2000;
+ pcf85063->rtc->range_max = RTC_TIMESTAMP_END_2099;
+ pcf85063->rtc->uie_unsupported = 1;
+
+ if (config->has_alarms && client->irq > 0) {
+ err = devm_request_threaded_irq(&client->dev, client->irq,
+ NULL, pcf85063_rtc_handle_irq,
+ IRQF_TRIGGER_LOW | IRQF_ONESHOT,
+ "pcf85063", pcf85063);
+ if (err) {
+ dev_warn(&pcf85063->rtc->dev,
+ "unable to request IRQ, alarms disabled\n");
+ } else {
+ pcf85063->rtc->ops = &pcf85063_rtc_ops_alarm;
+ device_init_wakeup(&client->dev, true);
+ err = dev_pm_set_wake_irq(&client->dev, client->irq);
+ if (err)
+ dev_err(&pcf85063->rtc->dev,
+ "failed to enable irq wake\n");
+ }
+ }
+
+ nvmem_cfg.priv = pcf85063->regmap;
+ rtc_nvmem_register(pcf85063->rtc, &nvmem_cfg);
- return PTR_ERR_OR_ZERO(rtc);
+ return rtc_register_device(pcf85063->rtc);
}
-static const struct i2c_device_id pcf85063_id[] = {
- { "pcf85063", 0 },
- { }
-};
-MODULE_DEVICE_TABLE(i2c, pcf85063_id);
-
#ifdef CONFIG_OF
static const struct of_device_id pcf85063_of_match[] = {
- { .compatible = "nxp,pcf85063" },
+ { .compatible = "nxp,pcf85063", .data = &pcf85063tp_config },
+ { .compatible = "nxp,pcf85063tp", .data = &pcf85063tp_config },
+ { .compatible = "nxp,pcf85063a", .data = &pcf85063a_config },
+ { .compatible = "microcrystal,rv8263", .data = &rv8263_config },
{}
};
MODULE_DEVICE_TABLE(of, pcf85063_of_match);
@@ -255,8 +488,7 @@ static struct i2c_driver pcf85063_driver = {
.name = "rtc-pcf85063",
.of_match_table = of_match_ptr(pcf85063_of_match),
},
- .probe = pcf85063_probe,
- .id_table = pcf85063_id,
+ .probe_new = pcf85063_probe,
};
module_i2c_driver(pcf85063_driver);
diff --git a/drivers/rtc/rtc-pcf85363.c b/drivers/rtc/rtc-pcf85363.c
index a3988079f60afbdd29f0ac470cb17601519f1853..a075e77617dcbe826e361294d966ca3e9041c018 100644
--- a/drivers/rtc/rtc-pcf85363.c
+++ b/drivers/rtc/rtc-pcf85363.c
@@ -1,15 +1,10 @@
+// SPDX-License-Identifier: GPL-2.0
/*
* drivers/rtc/rtc-pcf85363.c
*
* Driver for NXP PCF85363 real-time clock.
*
* Copyright (C) 2017 Eric Nelson
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License version 2 as
- * published by the Free Software Foundation.
- *
- * Based loosely on rtc-8583 by Russell King, Wolfram Sang and Juergen Beisert
*/
#include <linux/module.h>
#include <linux/i2c.h>
@@ -112,10 +107,7 @@
#define NVRAM_SIZE 0x40
-static struct i2c_driver pcf85363_driver;
-
struct pcf85363 {
- struct device *dev;
struct rtc_device *rtc;
struct regmap *regmap;
};
@@ -386,9 +378,6 @@ static int pcf85363_probe(struct i2c_client *client,
if (data)
config = data;
- if (!i2c_check_functionality(client->adapter, I2C_FUNC_I2C))
- return -ENODEV;
-
pcf85363 = devm_kzalloc(&client->dev, sizeof(struct pcf85363),
GFP_KERNEL);
if (!pcf85363)
@@ -400,20 +389,21 @@ static int pcf85363_probe(struct i2c_client *client,
return PTR_ERR(pcf85363->regmap);
}
- pcf85363->dev = &client->dev;
i2c_set_clientdata(client, pcf85363);
- pcf85363->rtc = devm_rtc_allocate_device(pcf85363->dev);
+ pcf85363->rtc = devm_rtc_allocate_device(&client->dev);
if (IS_ERR(pcf85363->rtc))
return PTR_ERR(pcf85363->rtc);
pcf85363->rtc->ops = &rtc_ops;
+ pcf85363->rtc->range_min = RTC_TIMESTAMP_BEGIN_2000;
+ pcf85363->rtc->range_max = RTC_TIMESTAMP_END_2099;
if (client->irq > 0) {
regmap_write(pcf85363->regmap, CTRL_FLAGS, 0);
regmap_update_bits(pcf85363->regmap, CTRL_PIN_IO,
PIN_IO_INTA_OUT, PIN_IO_INTAPM);
- ret = devm_request_threaded_irq(pcf85363->dev, client->irq,
+ ret = devm_request_threaded_irq(&client->dev, client->irq,
NULL, pcf85363_rtc_handle_irq,
IRQF_TRIGGER_LOW | IRQF_ONESHOT,
"pcf85363", client);
diff --git a/drivers/rtc/rtc-ps3.c b/drivers/rtc/rtc-ps3.c
index 347288bff43896c7dcc11eee61d311e8cf13040a..f0336d691e6cf9b6a96719ebd1454bcac403d94e 100644
--- a/drivers/rtc/rtc-ps3.c
+++ b/drivers/rtc/rtc-ps3.c
@@ -1,20 +1,8 @@
+// SPDX-License-Identifier: GPL-2.0
/*
* PS3 RTC Driver
*
* Copyright 2009 Sony Corporation
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; version 2 of the License.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program.
- * If not, see <http://www.gnu.org/licenses/>.
*/
#include <linux/kernel.h>
@@ -40,16 +28,13 @@ static u64 read_rtc(void)
static int ps3_get_time(struct device *dev, struct rtc_time *tm)
{
- rtc_time_to_tm(read_rtc() + ps3_os_area_get_rtc_diff(), tm);
+ rtc_time64_to_tm(read_rtc() + ps3_os_area_get_rtc_diff(), tm);
return 0;
}
static int ps3_set_time(struct device *dev, struct rtc_time *tm)
{
- unsigned long now;
-
- rtc_tm_to_time(tm, &now);
- ps3_os_area_set_rtc_diff(now - read_rtc());
+ ps3_os_area_set_rtc_diff(rtc_tm_to_time64(tm) - read_rtc());
return 0;
}
@@ -62,13 +47,16 @@ static int __init ps3_rtc_probe(struct platform_device *dev)
{
struct rtc_device *rtc;
- rtc = devm_rtc_device_register(&dev->dev, "rtc-ps3", &ps3_rtc_ops,
- THIS_MODULE);
+ rtc = devm_rtc_allocate_device(&dev->dev);
if (IS_ERR(rtc))
return PTR_ERR(rtc);
+ rtc->ops = &ps3_rtc_ops;
+ rtc->range_max = U64_MAX;
+
platform_set_drvdata(dev, rtc);
- return 0;
+
+ return rtc_register_device(rtc);
}
static struct platform_driver ps3_rtc_driver = {
diff --git a/drivers/rtc/rtc-pxa.c b/drivers/rtc/rtc-pxa.c
index e1887b86fdc743ecd7a66edbb5d4b90b7a96625e..d4766734e40b4564fe61da2908af2aa6970c9158 100644
--- a/drivers/rtc/rtc-pxa.c
+++ b/drivers/rtc/rtc-pxa.c
@@ -145,8 +145,7 @@ static void rtsr_set_bits(struct pxa_rtc *pxa_rtc, u32 mask)
static irqreturn_t pxa_rtc_irq(int irq, void *dev_id)
{
- struct platform_device *pdev = to_platform_device(dev_id);
- struct pxa_rtc *pxa_rtc = platform_get_drvdata(pdev);
+ struct pxa_rtc *pxa_rtc = dev_get_drvdata(dev_id);
u32 rtsr;
unsigned long events = 0;
diff --git a/drivers/rtc/rtc-rk808.c b/drivers/rtc/rtc-rk808.c
index 1fb864d4ef83cb67c8728b8dbcb97ceab0022f7a..5c5d9f125669b609a4689f952213d37ee852ae12 100644
--- a/drivers/rtc/rtc-rk808.c
+++ b/drivers/rtc/rtc-rk808.c
@@ -336,8 +336,7 @@ static const struct rtc_class_ops rk808_rtc_ops = {
/* Turn off the alarm if it should not be a wake source. */
static int rk808_rtc_suspend(struct device *dev)
{
- struct platform_device *pdev = to_platform_device(dev);
- struct rk808_rtc *rk808_rtc = dev_get_drvdata(&pdev->dev);
+ struct rk808_rtc *rk808_rtc = dev_get_drvdata(dev);
if (device_may_wakeup(dev))
enable_irq_wake(rk808_rtc->irq);
@@ -350,8 +349,7 @@ static int rk808_rtc_suspend(struct device *dev)
*/
static int rk808_rtc_resume(struct device *dev)
{
- struct platform_device *pdev = to_platform_device(dev);
- struct rk808_rtc *rk808_rtc = dev_get_drvdata(&pdev->dev);
+ struct rk808_rtc *rk808_rtc = dev_get_drvdata(dev);
if (device_may_wakeup(dev))
disable_irq_wake(rk808_rtc->irq);
diff --git a/drivers/rtc/rtc-rx6110.c b/drivers/rtc/rtc-rx6110.c
index 5899ca368d593776e4bb4feca7a28fbb84a98f13..71e20a6bd387fa7dbe00221a2cb87381905841c8 100644
--- a/drivers/rtc/rtc-rx6110.c
+++ b/drivers/rtc/rtc-rx6110.c
@@ -21,6 +21,8 @@
#include <linux/of_gpio.h>
#include <linux/regmap.h>
#include <linux/rtc.h>
+#include <linux/of.h>
+#include <linux/of_device.h>
#include <linux/spi/spi.h>
/* RX-6110 Register definitions */
@@ -379,9 +381,16 @@ static const struct spi_device_id rx6110_id[] = {
};
MODULE_DEVICE_TABLE(spi, rx6110_id);
+static const struct of_device_id rx6110_spi_of_match[] = {
+ { .compatible = "epson,rx6110" },
+ { },
+};
+MODULE_DEVICE_TABLE(of, rx6110_spi_of_match);
+
static struct spi_driver rx6110_driver = {
.driver = {
.name = RX6110_DRIVER_NAME,
+ .of_match_table = of_match_ptr(rx6110_spi_of_match),
},
.probe = rx6110_probe,
.remove = rx6110_remove,
diff --git a/drivers/rtc/rtc-rx8025.c b/drivers/rtc/rtc-rx8025.c
index 41de38acc570171eaebcc8e7fc89dd07353716c6..fddc996cb38d99a44b25a6d0b06518aa24d580ff 100644
--- a/drivers/rtc/rtc-rx8025.c
+++ b/drivers/rtc/rtc-rx8025.c
@@ -311,7 +311,7 @@ static int rx8025_read_alarm(struct device *dev, struct rtc_wkalrm *t)
t->time.tm_hour = bcd2bin(ald[1] & 0x1f) % 12
+ (ald[1] & 0x20 ? 12 : 0);
- dev_dbg(dev, "%s: date: %ptRr\n", __func__, t);
+ dev_dbg(dev, "%s: date: %ptRr\n", __func__, &t->time);
t->enabled = !!(rx8025->ctrl1 & RX8025_BIT_CTRL1_DALE);
t->pending = (ctrl2 & RX8025_BIT_CTRL2_DAFG) && t->enabled;
diff --git a/drivers/rtc/rtc-sh.c b/drivers/rtc/rtc-sh.c
index 1d3de2a3d1a4d7a0ad5a7d327efaaca0d72f468c..579b3ff5c644fd9df948ed2773bd7a99694e27ca 100644
--- a/drivers/rtc/rtc-sh.c
+++ b/drivers/rtc/rtc-sh.c
@@ -276,6 +276,9 @@ static int sh_rtc_read_time(struct device *dev, struct rtc_time *tm)
struct sh_rtc *rtc = dev_get_drvdata(dev);
unsigned int sec128, sec2, yr, yr100, cf_bit;
+ if (!(readb(rtc->regbase + RCR2) & RCR2_RTCEN))
+ return -EINVAL;
+
do {
unsigned int tmp;
@@ -466,7 +469,6 @@ static int __init sh_rtc_probe(struct platform_device *pdev)
{
struct sh_rtc *rtc;
struct resource *res;
- struct rtc_time r;
char clk_name[6];
int clk_id, ret;
@@ -528,6 +530,10 @@ static int __init sh_rtc_probe(struct platform_device *pdev)
rtc->clk = NULL;
}
+ rtc->rtc_dev = devm_rtc_allocate_device(&pdev->dev);
+ if (IS_ERR(rtc->rtc_dev))
+ return PTR_ERR(rtc->rtc_dev);
+
clk_enable(rtc->clk);
rtc->capabilities = RTC_DEF_CAPABILITIES;
@@ -591,21 +597,21 @@ static int __init sh_rtc_probe(struct platform_device *pdev)
sh_rtc_setaie(&pdev->dev, 0);
sh_rtc_setcie(&pdev->dev, 0);
- rtc->rtc_dev = devm_rtc_device_register(&pdev->dev, "sh",
- &sh_rtc_ops, THIS_MODULE);
- if (IS_ERR(rtc->rtc_dev)) {
- ret = PTR_ERR(rtc->rtc_dev);
- goto err_unmap;
- }
-
+ rtc->rtc_dev->ops = &sh_rtc_ops;
rtc->rtc_dev->max_user_freq = 256;
- /* reset rtc to epoch 0 if time is invalid */
- if (rtc_read_time(rtc->rtc_dev, &r) < 0) {
- rtc_time_to_tm(0, &r);
- rtc_set_time(rtc->rtc_dev, &r);
+ if (rtc->capabilities & RTC_CAP_4_DIGIT_YEAR) {
+ rtc->rtc_dev->range_min = RTC_TIMESTAMP_BEGIN_1900;
+ rtc->rtc_dev->range_max = RTC_TIMESTAMP_END_9999;
+ } else {
+ rtc->rtc_dev->range_min = mktime64(1999, 1, 1, 0, 0, 0);
+ rtc->rtc_dev->range_max = mktime64(2098, 12, 31, 23, 59, 59);
}
+ ret = rtc_register_device(rtc->rtc_dev);
+ if (ret)
+ goto err_unmap;
+
device_init_wakeup(&pdev->dev, 1);
return 0;
diff --git a/drivers/rtc/rtc-sirfsoc.c b/drivers/rtc/rtc-sirfsoc.c
index 2a9e151cae992ae321b9ec384386fd9ff8b58ace..9ba28d1ebd87a8f2003dfc2ae71ae752eaa16401 100644
--- a/drivers/rtc/rtc-sirfsoc.c
+++ b/drivers/rtc/rtc-sirfsoc.c
@@ -279,7 +279,7 @@ static const struct of_device_id sirfsoc_rtc_of_match[] = {
{},
};
-const struct regmap_config sysrtc_regmap_config = {
+static const struct regmap_config sysrtc_regmap_config = {
.reg_bits = 32,
.val_bits = 32,
.fast_io = true,
diff --git a/drivers/rtc/rtc-snvs.c b/drivers/rtc/rtc-snvs.c
index 0b9eff19149b13ee2537b0c62088de013dc7eec5..7ee673a25fd0a10f72213e8aec6d787b322b114a 100644
--- a/drivers/rtc/rtc-snvs.c
+++ b/drivers/rtc/rtc-snvs.c
@@ -9,6 +9,7 @@
#include <linux/of.h>
#include <linux/of_device.h>
#include <linux/platform_device.h>
+#include <linux/pm_wakeirq.h>
#include <linux/rtc.h>
#include <linux/clk.h>
#include <linux/mfd/syscon.h>
@@ -271,7 +272,6 @@ static const struct regmap_config snvs_rtc_config = {
static int snvs_rtc_probe(struct platform_device *pdev)
{
struct snvs_rtc_data *data;
- struct resource *res;
int ret;
void __iomem *mmio;
@@ -283,9 +283,8 @@ static int snvs_rtc_probe(struct platform_device *pdev)
if (IS_ERR(data->regmap)) {
dev_warn(&pdev->dev, "snvs rtc: you use old dts file, please update it\n");
- res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
- mmio = devm_ioremap_resource(&pdev->dev, res);
+ mmio = devm_platform_ioremap_resource(pdev, 0);
if (IS_ERR(mmio))
return PTR_ERR(mmio);
@@ -332,6 +331,9 @@ static int snvs_rtc_probe(struct platform_device *pdev)
}
device_init_wakeup(&pdev->dev, true);
+ ret = dev_pm_set_wake_irq(&pdev->dev, data->irq);
+ if (ret)
+ dev_err(&pdev->dev, "failed to enable irq wake\n");
ret = devm_request_irq(&pdev->dev, data->irq, snvs_rtc_irq_handler,
IRQF_SHARED, "rtc alarm", &pdev->dev);
@@ -358,18 +360,7 @@ static int snvs_rtc_probe(struct platform_device *pdev)
return ret;
}
-#ifdef CONFIG_PM_SLEEP
-static int snvs_rtc_suspend(struct device *dev)
-{
- struct snvs_rtc_data *data = dev_get_drvdata(dev);
-
- if (device_may_wakeup(dev))
- return enable_irq_wake(data->irq);
-
- return 0;
-}
-
-static int snvs_rtc_suspend_noirq(struct device *dev)
+static int __maybe_unused snvs_rtc_suspend_noirq(struct device *dev)
{
struct snvs_rtc_data *data = dev_get_drvdata(dev);
@@ -379,17 +370,7 @@ static int snvs_rtc_suspend_noirq(struct device *dev)
return 0;
}
-static int snvs_rtc_resume(struct device *dev)
-{
- struct snvs_rtc_data *data = dev_get_drvdata(dev);
-
- if (device_may_wakeup(dev))
- return disable_irq_wake(data->irq);
-
- return 0;
-}
-
-static int snvs_rtc_resume_noirq(struct device *dev)
+static int __maybe_unused snvs_rtc_resume_noirq(struct device *dev)
{
struct snvs_rtc_data *data = dev_get_drvdata(dev);
@@ -400,20 +381,9 @@ static int snvs_rtc_resume_noirq(struct device *dev)
}
static const struct dev_pm_ops snvs_rtc_pm_ops = {
- .suspend = snvs_rtc_suspend,
- .suspend_noirq = snvs_rtc_suspend_noirq,
- .resume = snvs_rtc_resume,
- .resume_noirq = snvs_rtc_resume_noirq,
+ SET_NOIRQ_SYSTEM_SLEEP_PM_OPS(snvs_rtc_suspend_noirq, snvs_rtc_resume_noirq)
};
-#define SNVS_RTC_PM_OPS (&snvs_rtc_pm_ops)
-
-#else
-
-#define SNVS_RTC_PM_OPS NULL
-
-#endif
-
static const struct of_device_id snvs_dt_ids[] = {
{ .compatible = "fsl,sec-v4.0-mon-rtc-lp", },
{ /* sentinel */ }
@@ -423,7 +393,7 @@ MODULE_DEVICE_TABLE(of, snvs_dt_ids);
static struct platform_driver snvs_rtc_driver = {
.driver = {
.name = "snvs_rtc",
- .pm = SNVS_RTC_PM_OPS,
+ .pm = &snvs_rtc_pm_ops,
.of_match_table = snvs_dt_ids,
},
.probe = snvs_rtc_probe,
diff --git a/drivers/rtc/rtc-stm32.c b/drivers/rtc/rtc-stm32.c
index c5908cfea2340ff3233322e1786aac63b74ec8b8..8e6c9b3bcc29a4d2fec1c52cd2118f4a35cee00e 100644
--- a/drivers/rtc/rtc-stm32.c
+++ b/drivers/rtc/rtc-stm32.c
@@ -788,11 +788,14 @@ static int stm32_rtc_probe(struct platform_device *pdev)
ret = device_init_wakeup(&pdev->dev, true);
if (rtc->data->has_wakeirq) {
rtc->wakeirq_alarm = platform_get_irq(pdev, 1);
- if (rtc->wakeirq_alarm <= 0)
- ret = rtc->wakeirq_alarm;
- else
+ if (rtc->wakeirq_alarm > 0) {
ret = dev_pm_set_dedicated_wake_irq(&pdev->dev,
rtc->wakeirq_alarm);
+ } else {
+ ret = rtc->wakeirq_alarm;
+ if (rtc->wakeirq_alarm == -EPROBE_DEFER)
+ goto err;
+ }
}
if (ret)
dev_warn(&pdev->dev, "alarm can't wake up the system: %d", ret);
diff --git a/drivers/rtc/rtc-stmp3xxx.c b/drivers/rtc/rtc-stmp3xxx.c
index b76318fd5bb004b4fa492de45df151e9b46b9a35..ff6488be385f49f521e41efbac56c1de3cc0acac 100644
--- a/drivers/rtc/rtc-stmp3xxx.c
+++ b/drivers/rtc/rtc-stmp3xxx.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0+
/*
* Freescale STMP37XX/STMP378X Real Time Clock driver
*
@@ -8,15 +9,6 @@
* Copyright 2008 Embedded Alley Solutions, Inc All Rights Reserved.
* Copyright 2011 Wolfram Sang, Pengutronix e.K.
*/
-
-/*
- * The code contained herein is licensed under the GNU General Public
- * License. You may obtain a copy of the GNU General Public License
- * Version 2 or later at the following locations:
- *
- * http://www.opensource.org/licenses/gpl-license.html
- * http://www.gnu.org/copyleft/gpl.html
- */
#include <linux/kernel.h>
#include <linux/module.h>
#include <linux/io.h>
@@ -160,15 +152,15 @@ static int stmp3xxx_rtc_gettime(struct device *dev, struct rtc_time *rtc_tm)
if (ret)
return ret;
- rtc_time_to_tm(readl(rtc_data->io + STMP3XXX_RTC_SECONDS), rtc_tm);
+ rtc_time64_to_tm(readl(rtc_data->io + STMP3XXX_RTC_SECONDS), rtc_tm);
return 0;
}
-static int stmp3xxx_rtc_set_mmss(struct device *dev, unsigned long t)
+static int stmp3xxx_rtc_settime(struct device *dev, struct rtc_time *rtc_tm)
{
struct stmp3xxx_rtc_data *rtc_data = dev_get_drvdata(dev);
- writel(t, rtc_data->io + STMP3XXX_RTC_SECONDS);
+ writel(rtc_tm_to_time64(rtc_tm), rtc_data->io + STMP3XXX_RTC_SECONDS);
return stmp3xxx_wait_time(rtc_data);
}
@@ -214,17 +206,15 @@ static int stmp3xxx_rtc_read_alarm(struct device *dev, struct rtc_wkalrm *alm)
{
struct stmp3xxx_rtc_data *rtc_data = dev_get_drvdata(dev);
- rtc_time_to_tm(readl(rtc_data->io + STMP3XXX_RTC_ALARM), &alm->time);
+ rtc_time64_to_tm(readl(rtc_data->io + STMP3XXX_RTC_ALARM), &alm->time);
return 0;
}
static int stmp3xxx_rtc_set_alarm(struct device *dev, struct rtc_wkalrm *alm)
{
- unsigned long t;
struct stmp3xxx_rtc_data *rtc_data = dev_get_drvdata(dev);
- rtc_tm_to_time(&alm->time, &t);
- writel(t, rtc_data->io + STMP3XXX_RTC_ALARM);
+ writel(rtc_tm_to_time64(&alm->time), rtc_data->io + STMP3XXX_RTC_ALARM);
stmp3xxx_alarm_irq_enable(dev, alm->enabled);
@@ -235,7 +225,7 @@ static const struct rtc_class_ops stmp3xxx_rtc_ops = {
.alarm_irq_enable =
stmp3xxx_alarm_irq_enable,
.read_time = stmp3xxx_rtc_gettime,
- .set_mmss = stmp3xxx_rtc_set_mmss,
+ .set_time = stmp3xxx_rtc_settime,
.read_alarm = stmp3xxx_rtc_read_alarm,
.set_alarm = stmp3xxx_rtc_set_alarm,
};
@@ -361,8 +351,7 @@ static int stmp3xxx_rtc_probe(struct platform_device *pdev)
STMP3XXX_RTC_CTRL_ALARM_IRQ_EN,
rtc_data->io + STMP3XXX_RTC_CTRL + STMP_OFFSET_REG_CLR);
- rtc_data->rtc = devm_rtc_device_register(&pdev->dev, pdev->name,
- &stmp3xxx_rtc_ops, THIS_MODULE);
+ rtc_data->rtc = devm_rtc_allocate_device(&pdev->dev);
if (IS_ERR(rtc_data->rtc))
return PTR_ERR(rtc_data->rtc);
@@ -374,6 +363,13 @@ static int stmp3xxx_rtc_probe(struct platform_device *pdev)
return err;
}
+ rtc_data->rtc->ops = &stmp3xxx_rtc_ops;
+ rtc_data->rtc->range_max = U32_MAX;
+
+ err = rtc_register_device(rtc_data->rtc);
+ if (err)
+ return err;
+
stmp3xxx_wdt_register(pdev);
return 0;
}
diff --git a/drivers/rtc/rtc-sun4v.c b/drivers/rtc/rtc-sun4v.c
index 11bc562eba5dfb7d9aa749ff9e951397b9d6c7a8..036463dfa103a771ddb08fe0e45631075956cf3d 100644
--- a/drivers/rtc/rtc-sun4v.c
+++ b/drivers/rtc/rtc-sun4v.c
@@ -1,7 +1,7 @@
+// SPDX-License-Identifier: GPL-2.0
/* rtc-sun4v.c: Hypervisor based RTC for SUN4V systems.
*
* Author: David S. Miller
- * License: GPL
*
* Copyright (C) 2008 David S. Miller <davem@davemloft.net>
*/
@@ -39,7 +39,7 @@ static unsigned long hypervisor_get_time(void)
static int sun4v_read_time(struct device *dev, struct rtc_time *tm)
{
- rtc_time_to_tm(hypervisor_get_time(), tm);
+ rtc_time64_to_tm(hypervisor_get_time(), tm);
return 0;
}
@@ -66,14 +66,7 @@ static int hypervisor_set_time(unsigned long secs)
static int sun4v_set_time(struct device *dev, struct rtc_time *tm)
{
- unsigned long secs;
- int err;
-
- err = rtc_tm_to_time(tm, &secs);
- if (err)
- return err;
-
- return hypervisor_set_time(secs);
+ return hypervisor_set_time(rtc_tm_to_time64(tm));
}
static const struct rtc_class_ops sun4v_rtc_ops = {
@@ -85,13 +78,15 @@ static int __init sun4v_rtc_probe(struct platform_device *pdev)
{
struct rtc_device *rtc;
- rtc = devm_rtc_device_register(&pdev->dev, "sun4v",
- &sun4v_rtc_ops, THIS_MODULE);
+ rtc = devm_rtc_allocate_device(&pdev->dev);
if (IS_ERR(rtc))
return PTR_ERR(rtc);
+ rtc->ops = &sun4v_rtc_ops;
+ rtc->range_max = U64_MAX;
platform_set_drvdata(pdev, rtc);
- return 0;
+
+ return rtc_register_device(rtc);
}
static struct platform_driver sun4v_rtc_driver = {
diff --git a/drivers/rtc/rtc-tegra.c b/drivers/rtc/rtc-tegra.c
index c6b0a99aa3a9398e95647719e74cd8782b7c9cbd..f0ce76865434ac46470ae8af2af0d1c93b5beb9d 100644
--- a/drivers/rtc/rtc-tegra.c
+++ b/drivers/rtc/rtc-tegra.c
@@ -1,21 +1,8 @@
+// SPDX-License-Identifier: GPL-2.0+
/*
* An RTC driver for the NVIDIA Tegra 200 series internal RTC.
*
* Copyright (c) 2010, NVIDIA Corporation.
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful, but WITHOUT
- * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
- * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
- * more details.
- *
- * You should have received a copy of the GNU General Public License along
- * with this program; if not, write to the Free Software Foundation, Inc.,
- * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
*/
#include <linux/clk.h>
@@ -123,7 +110,7 @@ static int tegra_rtc_read_time(struct device *dev, struct rtc_time *tm)
spin_unlock_irqrestore(&info->tegra_rtc_lock, sl_irq_flags);
- rtc_time_to_tm(sec, tm);
+ rtc_time64_to_tm(sec, tm);
dev_vdbg(dev, "time read as %lu. %ptR\n", sec, tm);
@@ -137,7 +124,7 @@ static int tegra_rtc_set_time(struct device *dev, struct rtc_time *tm)
int ret;
/* convert tm to seconds. */
- rtc_tm_to_time(tm, &sec);
+ sec = rtc_tm_to_time64(tm);
dev_vdbg(dev, "time set to %lu. %ptR\n", sec, tm);
@@ -166,7 +153,7 @@ static int tegra_rtc_read_alarm(struct device *dev, struct rtc_wkalrm *alarm)
} else {
/* alarm is enabled. */
alarm->enabled = 1;
- rtc_time_to_tm(sec, &alarm->time);
+ rtc_time64_to_tm(sec, &alarm->time);
}
tmp = readl(info->rtc_base + TEGRA_RTC_REG_INTR_STATUS);
@@ -204,7 +191,7 @@ static int tegra_rtc_set_alarm(struct device *dev, struct rtc_wkalrm *alarm)
unsigned long sec;
if (alarm->enabled)
- rtc_tm_to_time(&alarm->time, &sec);
+ sec = rtc_tm_to_time64(&alarm->time);
else
sec = 0;
@@ -306,6 +293,13 @@ static int __init tegra_rtc_probe(struct platform_device *pdev)
info->tegra_rtc_irq = ret;
+ info->rtc_dev = devm_rtc_allocate_device(&pdev->dev);
+ if (IS_ERR(info->rtc_dev))
+ return PTR_ERR(info->rtc_dev);
+
+ info->rtc_dev->ops = &tegra_rtc_ops;
+ info->rtc_dev->range_max = U32_MAX;
+
info->clk = devm_clk_get(&pdev->dev, NULL);
if (IS_ERR(info->clk))
return PTR_ERR(info->clk);
@@ -327,16 +321,6 @@ static int __init tegra_rtc_probe(struct platform_device *pdev)
device_init_wakeup(&pdev->dev, 1);
- info->rtc_dev = devm_rtc_device_register(&pdev->dev,
- dev_name(&pdev->dev), &tegra_rtc_ops,
- THIS_MODULE);
- if (IS_ERR(info->rtc_dev)) {
- ret = PTR_ERR(info->rtc_dev);
- dev_err(&pdev->dev, "Unable to register device (err=%d).\n",
- ret);
- goto disable_clk;
- }
-
ret = devm_request_irq(&pdev->dev, info->tegra_rtc_irq,
tegra_rtc_irq_handler, IRQF_TRIGGER_HIGH,
dev_name(&pdev->dev), &pdev->dev);
@@ -347,6 +331,13 @@ static int __init tegra_rtc_probe(struct platform_device *pdev)
goto disable_clk;
}
+ ret = rtc_register_device(info->rtc_dev);
+ if (ret) {
+ dev_err(&pdev->dev, "Unable to register device (err=%d).\n",
+ ret);
+ goto disable_clk;
+ }
+
dev_notice(&pdev->dev, "Tegra internal Real Time Clock\n");
return 0;
diff --git a/drivers/rtc/rtc-test.c b/drivers/rtc/rtc-test.c
index 6c5f09c815e8e92b9a7d9e338651edcece6c31a7..b298e9902f45bedb218581a264798a8440f93bab 100644
--- a/drivers/rtc/rtc-test.c
+++ b/drivers/rtc/rtc-test.c
@@ -70,11 +70,11 @@ static int test_rtc_read_time(struct device *dev, struct rtc_time *tm)
return 0;
}
-static int test_rtc_set_mmss64(struct device *dev, time64_t secs)
+static int test_rtc_set_time(struct device *dev, struct rtc_time *tm)
{
struct rtc_test_data *rtd = dev_get_drvdata(dev);
- rtd->offset = secs - ktime_get_real_seconds();
+ rtd->offset = rtc_tm_to_time64(tm) - ktime_get_real_seconds();
return 0;
}
@@ -94,15 +94,15 @@ static int test_rtc_alarm_irq_enable(struct device *dev, unsigned int enable)
static const struct rtc_class_ops test_rtc_ops_noalm = {
.read_time = test_rtc_read_time,
- .set_mmss64 = test_rtc_set_mmss64,
+ .set_time = test_rtc_set_time,
.alarm_irq_enable = test_rtc_alarm_irq_enable,
};
static const struct rtc_class_ops test_rtc_ops = {
.read_time = test_rtc_read_time,
+ .set_time = test_rtc_set_time,
.read_alarm = test_rtc_read_alarm,
.set_alarm = test_rtc_set_alarm,
- .set_mmss64 = test_rtc_set_mmss64,
.alarm_irq_enable = test_rtc_alarm_irq_enable,
};
@@ -152,7 +152,8 @@ static int __init test_init(void)
{
int i, err;
- if ((err = platform_driver_register(&test_driver)))
+ err = platform_driver_register(&test_driver);
+ if (err)
return err;
err = -ENOMEM;
diff --git a/drivers/rtc/rtc-tx4939.c b/drivers/rtc/rtc-tx4939.c
index 2d24babc4057fbea1357d57810470f97ffcbba97..5a29915a06ecad64f6477a02b02c8d3af487f544 100644
--- a/drivers/rtc/rtc-tx4939.c
+++ b/drivers/rtc/rtc-tx4939.c
@@ -42,11 +42,6 @@ struct tx4939rtc_plat_data {
spinlock_t lock;
};
-static struct tx4939rtc_plat_data *get_tx4939rtc_plat_data(struct device *dev)
-{
- return platform_get_drvdata(to_platform_device(dev));
-}
-
static int tx4939_rtc_cmd(struct tx4939_rtc_reg __iomem *rtcreg, int cmd)
{
int i = 0;
@@ -64,7 +59,7 @@ static int tx4939_rtc_cmd(struct tx4939_rtc_reg __iomem *rtcreg, int cmd)
static int tx4939_rtc_set_time(struct device *dev, struct rtc_time *tm)
{
- struct tx4939rtc_plat_data *pdata = get_tx4939rtc_plat_data(dev);
+ struct tx4939rtc_plat_data *pdata = dev_get_drvdata(dev);
struct tx4939_rtc_reg __iomem *rtcreg = pdata->rtcreg;
unsigned long secs = rtc_tm_to_time64(tm);
int i, ret;
@@ -89,7 +84,7 @@ static int tx4939_rtc_set_time(struct device *dev, struct rtc_time *tm)
static int tx4939_rtc_read_time(struct device *dev, struct rtc_time *tm)
{
- struct tx4939rtc_plat_data *pdata = get_tx4939rtc_plat_data(dev);
+ struct tx4939rtc_plat_data *pdata = dev_get_drvdata(dev);
struct tx4939_rtc_reg __iomem *rtcreg = pdata->rtcreg;
int i, ret;
unsigned long sec;
@@ -115,7 +110,7 @@ static int tx4939_rtc_read_time(struct device *dev, struct rtc_time *tm)
static int tx4939_rtc_set_alarm(struct device *dev, struct rtc_wkalrm *alrm)
{
- struct tx4939rtc_plat_data *pdata = get_tx4939rtc_plat_data(dev);
+ struct tx4939rtc_plat_data *pdata = dev_get_drvdata(dev);
struct tx4939_rtc_reg __iomem *rtcreg = pdata->rtcreg;
int i, ret;
unsigned long sec;
@@ -140,7 +135,7 @@ static int tx4939_rtc_set_alarm(struct device *dev, struct rtc_wkalrm *alrm)
static int tx4939_rtc_read_alarm(struct device *dev, struct rtc_wkalrm *alrm)
{
- struct tx4939rtc_plat_data *pdata = get_tx4939rtc_plat_data(dev);
+ struct tx4939rtc_plat_data *pdata = dev_get_drvdata(dev);
struct tx4939_rtc_reg __iomem *rtcreg = pdata->rtcreg;
int i, ret;
unsigned long sec;
@@ -170,7 +165,7 @@ static int tx4939_rtc_read_alarm(struct device *dev, struct rtc_wkalrm *alrm)
static int tx4939_rtc_alarm_irq_enable(struct device *dev, unsigned int enabled)
{
- struct tx4939rtc_plat_data *pdata = get_tx4939rtc_plat_data(dev);
+ struct tx4939rtc_plat_data *pdata = dev_get_drvdata(dev);
spin_lock_irq(&pdata->lock);
tx4939_rtc_cmd(pdata->rtcreg,
@@ -182,7 +177,7 @@ static int tx4939_rtc_alarm_irq_enable(struct device *dev, unsigned int enabled)
static irqreturn_t tx4939_rtc_interrupt(int irq, void *dev_id)
{
- struct tx4939rtc_plat_data *pdata = get_tx4939rtc_plat_data(dev_id);
+ struct tx4939rtc_plat_data *pdata = dev_get_drvdata(dev_id);
struct tx4939_rtc_reg __iomem *rtcreg = pdata->rtcreg;
unsigned long events = RTC_IRQF;
diff --git a/drivers/rtc/rtc-wm831x.c b/drivers/rtc/rtc-wm831x.c
index 7b824dabf104a2cdfe635d46a88a3ab7d0486da2..d2e8b21c90c40e7e76e93cbd59521add4811a307 100644
--- a/drivers/rtc/rtc-wm831x.c
+++ b/drivers/rtc/rtc-wm831x.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0+
/*
* Real Time Clock driver for Wolfson Microelectronics WM831x
*
@@ -5,11 +6,6 @@
*
* Author: Mark Brown <broonie@opensource.wolfsonmicro.com>
*
- * This program is free software; you can redistribute it and/or modify it
- * under the terms of the GNU General Public License as published by the
- * Free Software Foundation; either version 2 of the License, or (at your
- * option) any later version.
- *
*/
#include <linux/module.h>
@@ -155,7 +151,7 @@ static int wm831x_rtc_readtime(struct device *dev, struct rtc_time *tm)
if (memcmp(time1, time2, sizeof(time1)) == 0) {
u32 time = (time1[0] << 16) | time1[1];
- rtc_time_to_tm(time, tm);
+ rtc_time64_to_tm(time, tm);
return 0;
}
@@ -169,15 +165,17 @@ static int wm831x_rtc_readtime(struct device *dev, struct rtc_time *tm)
/*
* Set current time and date in RTC
*/
-static int wm831x_rtc_set_mmss(struct device *dev, unsigned long time)
+static int wm831x_rtc_settime(struct device *dev, struct rtc_time *tm)
{
struct wm831x_rtc *wm831x_rtc = dev_get_drvdata(dev);
struct wm831x *wm831x = wm831x_rtc->wm831x;
struct rtc_time new_tm;
- unsigned long new_time;
+ unsigned long time, new_time;
int ret;
int count = 0;
+ time = rtc_tm_to_time64(tm);
+
ret = wm831x_reg_write(wm831x, WM831X_RTC_TIME_1,
(time >> 16) & 0xffff);
if (ret < 0) {
@@ -215,11 +213,7 @@ static int wm831x_rtc_set_mmss(struct device *dev, unsigned long time)
if (ret < 0)
return ret;
- ret = rtc_tm_to_time(&new_tm, &new_time);
- if (ret < 0) {
- dev_err(dev, "Failed to convert time: %d\n", ret);
- return ret;
- }
+ new_time = rtc_tm_to_time64(&new_tm);
/* Allow a second of change in case of tick */
if (new_time - time > 1) {
@@ -249,7 +243,7 @@ static int wm831x_rtc_readalarm(struct device *dev, struct rtc_wkalrm *alrm)
time = (data[0] << 16) | data[1];
- rtc_time_to_tm(time, &alrm->time);
+ rtc_time64_to_tm(time, &alrm->time);
ret = wm831x_reg_read(wm831x_rtc->wm831x, WM831X_RTC_CONTROL);
if (ret < 0) {
@@ -288,11 +282,7 @@ static int wm831x_rtc_setalarm(struct device *dev, struct rtc_wkalrm *alrm)
int ret;
unsigned long time;
- ret = rtc_tm_to_time(&alrm->time, &time);
- if (ret < 0) {
- dev_err(dev, "Failed to convert time: %d\n", ret);
- return ret;
- }
+ time = rtc_tm_to_time64(&alrm->time);
ret = wm831x_rtc_stop_alarm(wm831x_rtc);
if (ret < 0) {
@@ -346,7 +336,7 @@ static irqreturn_t wm831x_alm_irq(int irq, void *data)
static const struct rtc_class_ops wm831x_rtc_ops = {
.read_time = wm831x_rtc_readtime,
- .set_mmss = wm831x_rtc_set_mmss,
+ .set_time = wm831x_rtc_settime,
.read_alarm = wm831x_rtc_readalarm,
.set_alarm = wm831x_rtc_setalarm,
.alarm_irq_enable = wm831x_rtc_alarm_irq_enable,
@@ -356,11 +346,10 @@ static const struct rtc_class_ops wm831x_rtc_ops = {
/* Turn off the alarm if it should not be a wake source. */
static int wm831x_rtc_suspend(struct device *dev)
{
- struct platform_device *pdev = to_platform_device(dev);
- struct wm831x_rtc *wm831x_rtc = dev_get_drvdata(&pdev->dev);
+ struct wm831x_rtc *wm831x_rtc = dev_get_drvdata(dev);
int ret, enable;
- if (wm831x_rtc->alarm_enabled && device_may_wakeup(&pdev->dev))
+ if (wm831x_rtc->alarm_enabled && device_may_wakeup(dev))
enable = WM831X_RTC_ALM_ENA;
else
enable = 0;
@@ -368,7 +357,7 @@ static int wm831x_rtc_suspend(struct device *dev)
ret = wm831x_set_bits(wm831x_rtc->wm831x, WM831X_RTC_CONTROL,
WM831X_RTC_ALM_ENA, enable);
if (ret != 0)
- dev_err(&pdev->dev, "Failed to update RTC alarm: %d\n", ret);
+ dev_err(dev, "Failed to update RTC alarm: %d\n", ret);
return 0;
}
@@ -378,15 +367,13 @@ static int wm831x_rtc_suspend(struct device *dev)
*/
static int wm831x_rtc_resume(struct device *dev)
{
- struct platform_device *pdev = to_platform_device(dev);
- struct wm831x_rtc *wm831x_rtc = dev_get_drvdata(&pdev->dev);
+ struct wm831x_rtc *wm831x_rtc = dev_get_drvdata(dev);
int ret;
if (wm831x_rtc->alarm_enabled) {
ret = wm831x_rtc_start_alarm(wm831x_rtc);
if (ret != 0)
- dev_err(&pdev->dev,
- "Failed to restart RTC alarm: %d\n", ret);
+ dev_err(dev, "Failed to restart RTC alarm: %d\n", ret);
}
return 0;
@@ -395,14 +382,13 @@ static int wm831x_rtc_resume(struct device *dev)
/* Unconditionally disable the alarm */
static int wm831x_rtc_freeze(struct device *dev)
{
- struct platform_device *pdev = to_platform_device(dev);
- struct wm831x_rtc *wm831x_rtc = dev_get_drvdata(&pdev->dev);
+ struct wm831x_rtc *wm831x_rtc = dev_get_drvdata(dev);
int ret;
ret = wm831x_set_bits(wm831x_rtc->wm831x, WM831X_RTC_CONTROL,
WM831X_RTC_ALM_ENA, 0);
if (ret != 0)
- dev_err(&pdev->dev, "Failed to stop RTC alarm: %d\n", ret);
+ dev_err(dev, "Failed to stop RTC alarm: %d\n", ret);
return 0;
}
@@ -429,19 +415,23 @@ static int wm831x_rtc_probe(struct platform_device *pdev)
ret = wm831x_reg_read(wm831x, WM831X_RTC_CONTROL);
if (ret < 0) {
dev_err(&pdev->dev, "Failed to read RTC control: %d\n", ret);
- goto err;
+ return ret;
}
if (ret & WM831X_RTC_ALM_ENA)
wm831x_rtc->alarm_enabled = 1;
device_init_wakeup(&pdev->dev, 1);
- wm831x_rtc->rtc = devm_rtc_device_register(&pdev->dev, "wm831x",
- &wm831x_rtc_ops, THIS_MODULE);
- if (IS_ERR(wm831x_rtc->rtc)) {
- ret = PTR_ERR(wm831x_rtc->rtc);
- goto err;
- }
+ wm831x_rtc->rtc = devm_rtc_allocate_device(&pdev->dev);
+ if (IS_ERR(wm831x_rtc->rtc))
+ return PTR_ERR(wm831x_rtc->rtc);
+
+ wm831x_rtc->rtc->ops = &wm831x_rtc_ops;
+ wm831x_rtc->rtc->range_max = U32_MAX;
+
+ ret = rtc_register_device(wm831x_rtc->rtc);
+ if (ret)
+ return ret;
ret = devm_request_threaded_irq(&pdev->dev, alm_irq, NULL,
wm831x_alm_irq,
@@ -455,9 +445,6 @@ static int wm831x_rtc_probe(struct platform_device *pdev)
wm831x_rtc_add_randomness(wm831x);
return 0;
-
-err:
- return ret;
}
static const struct dev_pm_ops wm831x_rtc_pm_ops = {
diff --git a/drivers/rtc/rtc-wm8350.c b/drivers/rtc/rtc-wm8350.c
index 483c7993516bb1f3326f54bb595b5144de6c694b..f54fa12c4b4b7ed6eb27daf41e669dd03005921f 100644
--- a/drivers/rtc/rtc-wm8350.c
+++ b/drivers/rtc/rtc-wm8350.c
@@ -340,8 +340,7 @@ static const struct rtc_class_ops wm8350_rtc_ops = {
#ifdef CONFIG_PM_SLEEP
static int wm8350_rtc_suspend(struct device *dev)
{
- struct platform_device *pdev = to_platform_device(dev);
- struct wm8350 *wm8350 = dev_get_drvdata(&pdev->dev);
+ struct wm8350 *wm8350 = dev_get_drvdata(dev);
int ret = 0;
u16 reg;
@@ -351,8 +350,7 @@ static int wm8350_rtc_suspend(struct device *dev)
reg & WM8350_RTC_ALMSTS) {
ret = wm8350_rtc_stop_alarm(wm8350);
if (ret != 0)
- dev_err(&pdev->dev, "Failed to stop RTC alarm: %d\n",
- ret);
+ dev_err(dev, "Failed to stop RTC alarm: %d\n", ret);
}
return ret;
@@ -360,15 +358,13 @@ static int wm8350_rtc_suspend(struct device *dev)
static int wm8350_rtc_resume(struct device *dev)
{
- struct platform_device *pdev = to_platform_device(dev);
- struct wm8350 *wm8350 = dev_get_drvdata(&pdev->dev);
+ struct wm8350 *wm8350 = dev_get_drvdata(dev);
int ret;
if (wm8350->rtc.alarm_enabled) {
ret = wm8350_rtc_start_alarm(wm8350);
if (ret != 0)
- dev_err(&pdev->dev,
- "Failed to restart RTC alarm: %d\n", ret);
+ dev_err(dev, "Failed to restart RTC alarm: %d\n", ret);
}
return 0;
diff --git a/drivers/rtc/rtc-x1205.c b/drivers/rtc/rtc-x1205.c
index f08f18e4fcdf125fe5d648c5ff9c50b6a42d92fd..ad2ae2f0536e883edeaedfa0780c22b0525edaff 100644
--- a/drivers/rtc/rtc-x1205.c
+++ b/drivers/rtc/rtc-x1205.c
@@ -673,9 +673,16 @@ static const struct i2c_device_id x1205_id[] = {
};
MODULE_DEVICE_TABLE(i2c, x1205_id);
+static const struct of_device_id x1205_dt_ids[] = {
+ { .compatible = "xircom,x1205", },
+ {},
+};
+MODULE_DEVICE_TABLE(of, x1205_dt_ids);
+
static struct i2c_driver x1205_driver = {
.driver = {
.name = "rtc-x1205",
+ .of_match_table = x1205_dt_ids,
},
.probe = x1205_probe,
.remove = x1205_remove,
diff --git a/drivers/rtc/rtc-xgene.c b/drivers/rtc/rtc-xgene.c
index 153820876a820033cfebaf9cee45c5ae0162f8a6..9888383f0088e625bce6ab0eb0cb0d765c771714 100644
--- a/drivers/rtc/rtc-xgene.c
+++ b/drivers/rtc/rtc-xgene.c
@@ -1,34 +1,21 @@
+// SPDX-License-Identifier: GPL-2.0+
/*
* APM X-Gene SoC Real Time Clock Driver
*
* Copyright (c) 2014, Applied Micro Circuits Corporation
* Author: Rameshwar Prasad Sahu <rsahu@apm.com>
* Loc Ho <lho@apm.com>
- *
- * This program is free software; you can redistribute it and/or modify it
- * under the terms of the GNU General Public License as published by the
- * Free Software Foundation; either version 2 of the License, or (at your
- * option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program. If not, see <http://www.gnu.org/licenses/>.
- *
*/
+#include <linux/clk.h>
+#include <linux/delay.h>
#include <linux/init.h>
+#include <linux/io.h>
#include <linux/module.h>
#include <linux/of.h>
#include <linux/platform_device.h>
-#include <linux/io.h>
-#include <linux/slab.h>
-#include <linux/clk.h>
-#include <linux/delay.h>
#include <linux/rtc.h>
+#include <linux/slab.h>
/* RTC CSR Registers */
#define RTC_CCVR 0x00
@@ -48,7 +35,6 @@
struct xgene_rtc_dev {
struct rtc_device *rtc;
struct device *dev;
- unsigned long alarm_time;
void __iomem *csr_base;
struct clk *clk;
unsigned int irq_wake;
@@ -59,11 +45,11 @@ static int xgene_rtc_read_time(struct device *dev, struct rtc_time *tm)
{
struct xgene_rtc_dev *pdata = dev_get_drvdata(dev);
- rtc_time_to_tm(readl(pdata->csr_base + RTC_CCVR), tm);
+ rtc_time64_to_tm(readl(pdata->csr_base + RTC_CCVR), tm);
return 0;
}
-static int xgene_rtc_set_mmss(struct device *dev, unsigned long secs)
+static int xgene_rtc_set_time(struct device *dev, struct rtc_time *tm)
{
struct xgene_rtc_dev *pdata = dev_get_drvdata(dev);
@@ -71,7 +57,7 @@ static int xgene_rtc_set_mmss(struct device *dev, unsigned long secs)
* NOTE: After the following write, the RTC_CCVR is only reflected
* after the update cycle of 1 seconds.
*/
- writel((u32) secs, pdata->csr_base + RTC_CLR);
+ writel((u32)rtc_tm_to_time64(tm), pdata->csr_base + RTC_CLR);
readl(pdata->csr_base + RTC_CLR); /* Force a barrier */
return 0;
@@ -81,7 +67,8 @@ static int xgene_rtc_read_alarm(struct device *dev, struct rtc_wkalrm *alrm)
{
struct xgene_rtc_dev *pdata = dev_get_drvdata(dev);
- rtc_time_to_tm(pdata->alarm_time, &alrm->time);
+ /* If possible, CMR should be read here */
+ rtc_time64_to_tm(0, &alrm->time);
alrm->enabled = readl(pdata->csr_base + RTC_CCR) & RTC_CCR_IE;
return 0;
@@ -115,11 +102,8 @@ static int xgene_rtc_alarm_irq_enabled(struct device *dev)
static int xgene_rtc_set_alarm(struct device *dev, struct rtc_wkalrm *alrm)
{
struct xgene_rtc_dev *pdata = dev_get_drvdata(dev);
- unsigned long alarm_time;
- rtc_tm_to_time(&alrm->time, &alarm_time);
- pdata->alarm_time = alarm_time;
- writel((u32) pdata->alarm_time, pdata->csr_base + RTC_CMR);
+ writel((u32)rtc_tm_to_time64(&alrm->time), pdata->csr_base + RTC_CMR);
xgene_rtc_alarm_irq_enable(dev, alrm->enabled);
@@ -128,7 +112,7 @@ static int xgene_rtc_set_alarm(struct device *dev, struct rtc_wkalrm *alrm)
static const struct rtc_class_ops xgene_rtc_ops = {
.read_time = xgene_rtc_read_time,
- .set_mmss = xgene_rtc_set_mmss,
+ .set_time = xgene_rtc_set_time,
.read_alarm = xgene_rtc_read_alarm,
.set_alarm = xgene_rtc_set_alarm,
.alarm_irq_enable = xgene_rtc_alarm_irq_enable,
@@ -136,7 +120,7 @@ static const struct rtc_class_ops xgene_rtc_ops = {
static irqreturn_t xgene_rtc_interrupt(int irq, void *id)
{
- struct xgene_rtc_dev *pdata = (struct xgene_rtc_dev *) id;
+ struct xgene_rtc_dev *pdata = id;
/* Check if interrupt asserted */
if (!(readl(pdata->csr_base + RTC_STAT) & RTC_STAT_BIT))
@@ -168,6 +152,10 @@ static int xgene_rtc_probe(struct platform_device *pdev)
if (IS_ERR(pdata->csr_base))
return PTR_ERR(pdata->csr_base);
+ pdata->rtc = devm_rtc_allocate_device(&pdev->dev);
+ if (IS_ERR(pdata->rtc))
+ return PTR_ERR(pdata->rtc);
+
irq = platform_get_irq(pdev, 0);
if (irq < 0) {
dev_err(&pdev->dev, "No IRQ resource\n");
@@ -198,15 +186,16 @@ static int xgene_rtc_probe(struct platform_device *pdev)
return ret;
}
- pdata->rtc = devm_rtc_device_register(&pdev->dev, pdev->name,
- &xgene_rtc_ops, THIS_MODULE);
- if (IS_ERR(pdata->rtc)) {
- clk_disable_unprepare(pdata->clk);
- return PTR_ERR(pdata->rtc);
- }
-
/* HW does not support update faster than 1 seconds */
pdata->rtc->uie_unsupported = 1;
+ pdata->rtc->ops = &xgene_rtc_ops;
+ pdata->rtc->range_max = U32_MAX;
+
+ ret = rtc_register_device(pdata->rtc);
+ if (ret) {
+ clk_disable_unprepare(pdata->clk);
+ return ret;
+ }
return 0;
}
diff --git a/drivers/rtc/rtc-zynqmp.c b/drivers/rtc/rtc-zynqmp.c
index bb950945ec7f211ef1e78f3a2e4391ffbcd4de71..00639594de0cec74afd137f0fde1878ffe644128 100644
--- a/drivers/rtc/rtc-zynqmp.c
+++ b/drivers/rtc/rtc-zynqmp.c
@@ -1,20 +1,9 @@
+// SPDX-License-Identifier: GPL-2.0
/*
* Xilinx Zynq Ultrascale+ MPSoC Real Time Clock Driver
*
* Copyright (C) 2015 Xilinx, Inc.
*
- * This program is free software; you can redistribute it and/or modify it
- * under the terms and conditions of the GNU General Public License,
- * version 2, as published by the Free Software Foundation.
- *
- * This program is distributed in the hope it will be useful, but WITHOUT
- * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
- * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
- * more details.
- *
- * You should have received a copy of the GNU General Public License along with
- * this program. If not, see <http://www.gnu.org/licenses/>.
- *
*/
#include <linux/delay.h>
diff --git a/drivers/rtc/sysfs.c b/drivers/rtc/sysfs.c
index a8f22ee726bb6113c16961a865509dadf5badefc..be3531e7f8684a66ac44519fede22106d73d31bd 100644
--- a/drivers/rtc/sysfs.c
+++ b/drivers/rtc/sysfs.c
@@ -1,20 +1,16 @@
+// SPDX-License-Identifier: GPL-2.0
/*
* RTC subsystem, sysfs interface
*
* Copyright (C) 2005 Tower Technologies
* Author: Alessandro Zummo <a.zummo@towertech.it>
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License version 2 as
- * published by the Free Software Foundation.
-*/
+ */
#include <linux/module.h>
#include <linux/rtc.h>
#include "rtc-core.h"
-
/* device attributes */
/*
@@ -86,7 +82,7 @@ max_user_freq_show(struct device *dev, struct device_attribute *attr, char *buf)
static ssize_t
max_user_freq_store(struct device *dev, struct device_attribute *attr,
- const char *buf, size_t n)
+ const char *buf, size_t n)
{
struct rtc_device *rtc = to_rtc_device(dev);
unsigned long val;
@@ -116,12 +112,11 @@ hctosys_show(struct device *dev, struct device_attribute *attr, char *buf)
{
#ifdef CONFIG_RTC_HCTOSYS_DEVICE
if (rtc_hctosys_ret == 0 &&
- strcmp(dev_name(&to_rtc_device(dev)->dev),
- CONFIG_RTC_HCTOSYS_DEVICE) == 0)
+ strcmp(dev_name(&to_rtc_device(dev)->dev),
+ CONFIG_RTC_HCTOSYS_DEVICE) == 0)
return sprintf(buf, "1\n");
- else
#endif
- return sprintf(buf, "0\n");
+ return sprintf(buf, "0\n");
}
static DEVICE_ATTR_RO(hctosys);
@@ -175,15 +170,15 @@ wakealarm_store(struct device *dev, struct device_attribute *attr,
if (*buf_ptr == '=') {
buf_ptr++;
push = 1;
- } else
+ } else {
adjust = 1;
+ }
}
retval = kstrtos64(buf_ptr, 0, &alarm);
if (retval)
return retval;
- if (adjust) {
+ if (adjust)
alarm += now;
- }
if (alarm > now || push) {
/* Avoid accidentally clobbering active alarms; we can't
* entirely prevent that here, without even the minimal
diff --git a/drivers/rtc/systohc.c b/drivers/rtc/systohc.c
index 718293d7242630b409d797cab864f734694006f6..8b70f0520e138c564bdd7872285baeb98d389a4b 100644
--- a/drivers/rtc/systohc.c
+++ b/drivers/rtc/systohc.c
@@ -1,9 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or modify it
- * under the terms of the GNU General Public License version 2 as published by
- * the Free Software Foundation.
- *
- */
+// SPDX-License-Identifier: GPL-2.0
#include <linux/rtc.h>
#include <linux/time.h>
@@ -35,8 +30,7 @@ int rtc_set_ntp_time(struct timespec64 now, unsigned long *target_nsec)
if (!rtc)
goto out_err;
- if (!rtc->ops || (!rtc->ops->set_time && !rtc->ops->set_mmss64 &&
- !rtc->ops->set_mmss))
+ if (!rtc->ops || !rtc->ops->set_time)
goto out_close;
/* Compute the value of tv_nsec we require the caller to supply in
@@ -58,9 +52,6 @@ int rtc_set_ntp_time(struct timespec64 now, unsigned long *target_nsec)
rtc_time64_to_tm(to_set.tv_sec, &tm);
- /* rtc_hctosys exclusively uses UTC, so we call set_time here, not
- * set_mmss.
- */
err = rtc_set_time(rtc, &tm);
out_close:
diff --git a/include/linux/rtc.h b/include/linux/rtc.h
index f89bfbb54902a6e45a5e3a7d03eb249088d005ca..df666cf29ef1624bbabf8b99abefccaf8f71b9bd 100644
--- a/include/linux/rtc.h
+++ b/include/linux/rtc.h
@@ -79,8 +79,6 @@ struct rtc_class_ops {
int (*read_alarm)(struct device *, struct rtc_wkalrm *);
int (*set_alarm)(struct device *, struct rtc_wkalrm *);
int (*proc)(struct device *, struct seq_file *);
- int (*set_mmss64)(struct device *, time64_t secs);
- int (*set_mmss)(struct device *, unsigned long secs);
int (*alarm_irq_enable)(struct device *, unsigned int enabled);
int (*read_offset)(struct device *, long *offset);
int (*set_offset)(struct device *, long offset);
@@ -162,9 +160,11 @@ struct rtc_device {
#define to_rtc_device(d) container_of(d, struct rtc_device, dev)
/* useful timestamps */
-#define RTC_TIMESTAMP_BEGIN_1900 -2208989361LL /* 1900-01-01 00:00:00 */
+#define RTC_TIMESTAMP_BEGIN_1900 -2208988800LL /* 1900-01-01 00:00:00 */
#define RTC_TIMESTAMP_BEGIN_2000 946684800LL /* 2000-01-01 00:00:00 */
+#define RTC_TIMESTAMP_END_2063 2966371199LL /* 2063-12-31 23:59:59 */
#define RTC_TIMESTAMP_END_2099 4102444799LL /* 2099-12-31 23:59:59 */
+#define RTC_TIMESTAMP_END_9999 253402300799LL /* 9999-12-31 23:59:59 */
extern struct rtc_device *devm_rtc_device_register(struct device *dev,
const char *name,
diff --git a/include/linux/rtc/ds1685.h b/include/linux/rtc/ds1685.h
index e6337a56d741e31dd94668c06e0fcfc9f5444905..a00b332c505fe8a0be90c4ae07cea47bef229b11 100644
--- a/include/linux/rtc/ds1685.h
+++ b/include/linux/rtc/ds1685.h
@@ -48,8 +48,6 @@ struct ds1685_priv {
u32 regstep;
resource_size_t baseaddr;
size_t size;
- spinlock_t lock;
- struct work_struct work;
int irq_num;
bool bcd_mode;
bool no_irq;