From: Philip Rakity Date: Fri, 2 Sep 2011 02:20:01 +0000 (+0200) Subject: max8925_power: Check at probe time if power to set online X-Git-Tag: firefly_0821_release~3680^2~3750^2~27 X-Git-Url: http://demsky.eecs.uci.edu/git/?a=commitdiff_plain;h=00a159a5567232fbe1dd85bc611c55f53943b0fc;p=firefly-linux-kernel-4.4.55.git 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 Signed-off-by: Ted Bennett Signed-off-by: Anton Vorontsov --- diff --git a/drivers/power/max8925_power.c b/drivers/power/max8925_power.c index d87032afcb5a..815525094ff9 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) { /*