From 00a159a5567232fbe1dd85bc611c55f53943b0fc Mon Sep 17 00:00:00 2001
From: Philip Rakity <prakity@marvell.com>
Date: Fri, 2 Sep 2011 04:20:01 +0200
Subject: [PATCH] max8925_power: Check at probe time if power to set online
The interrupt for ac on/off can be missed during boot time.
Check if online by seeing if we have power. We choose 0.5V
since this is high enough to avoid random reading from a
input that could be floating if no charger.
Signed-off-by: Philip Rakity <prakity@marvell.com>
Signed-off-by: Ted Bennett <tbennett@marvell.com>
Signed-off-by: Anton Vorontsov <cbouatmailru@gmail.com>
---
drivers/power/max8925_power.c | 8 +++++++-
1 file changed, 7 insertions(+), 1 deletion(-)
diff --git a/drivers/power/max8925_power.c b/drivers/power/max8925_power.c
index d87032afcb5a4..815525094ff9c 100644
--- a/drivers/power/max8925_power.c
+++ b/drivers/power/max8925_power.c
@@ -377,9 +377,15 @@ static __devinit int max8925_init_charger(struct max8925_chip *chip,
REQUEST_IRQ(MAX8925_IRQ_VCHG_TOPOFF, "charger-topoff");
REQUEST_IRQ(MAX8925_IRQ_VCHG_TMR_FAULT, "charger-timer-expire");
- info->ac_online = 0;
info->usb_online = 0;
info->bat_online = 0;
+
+ /* check for power - can miss interrupt at boot time */
+ if (start_measure(info, MEASURE_VCHG) * 2000 > 500000)
+ info->ac_online = 1;
+ else
+ info->ac_online = 0;
+
ret = max8925_reg_read(info->gpm, MAX8925_CHG_STATUS);
if (ret >= 0) {
/*
--
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