hollalinux
/
linux-sg2042
mirror of https://github.com/sophgo/linux-riscv.git
1
0
Fork 0
Code Issues Packages Projects Releases Wiki Activity

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>
This commit is contained in:
Philip Rakity 2011-09-02 04:20:01 +02:00 committed by Anton Vorontsov
parent b57f2f6108
commit 00a159a556
1 changed files with 7 additions and 1 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

8
drivers/power/max8925_power.c
View File

@ -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_TOPOFF, "charger-topoff");
REQUEST_IRQ(MAX8925_IRQ_VCHG_TMR_FAULT, "charger-timer-expire"); REQUEST_IRQ(MAX8925_IRQ_VCHG_TMR_FAULT, "charger-timer-expire");
info->ac_online = 0;
info->usb_online = 0; info->usb_online = 0;
info->bat_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); ret = max8925_reg_read(info->gpm, MAX8925_CHG_STATUS);
if (ret >= 0) { if (ret >= 0) {
/* /*