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pm2301: Update watchdog for pm2xxx support 

AB and PMxxx doesn't have same watchdog refresh period. Add watchdog
to refresh period parameters in x500 charger structure, this should
kick watchdog every 30sec. The AC charging should also kick both
pm2xxx and the AB charger watchdog.

Signed-off-by: Rajkumar Kasirajan <rajkumar.kasirajan@stericsson.com>
Signed-off-by: Loic Pallardy <loic.pallardy@stericsson.com>
Signed-off-by: Lee Jones <lee.jones@linaro.org>
Reviewed-by: Michel JAOUEN <michel.jaouen@stericsson.com>
Reviewed-by: Marcus COOPER <marcus.xm.cooper@stericsson.com>
Reviewed-by: Jonas ABERG <jonas.aberg@stericsson.com>
Tested-by: Michel JAOUEN <michel.jaouen@stericsson.com>
Tested-by: Jonas ABERG <jonas.aberg@stericsson.com>
This commit is contained in:
Loic Pallardy 2012-05-10 15:33:56 +02:00 committed by Lee Jones
parent e3455002d0
commit e07a56453b
5 changed files with 23 additions and 2 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

6
drivers/power/ab8500_charger.c
View File

@ -93,6 +93,8 @@
#define CHARGER_STATUS_POLL 10 /* in ms */
#define CHG_WD_INTERVAL (60 * HZ)
/* UsbLineStatus register - usb types */
enum ab8500_charger_link_status {
USB_STAT_NOT_CONFIGURED,
@ -2953,7 +2955,9 @@ static int ab8500_charger_probe(struct platform_device *pdev)
ARRAY_SIZE(ab8500_charger_voltage_map) - 1];
di->ac_chg.max_out_curr = ab8500_charger_current_map[
ARRAY_SIZE(ab8500_charger_current_map) - 1];
di->ac_chg.wdt_refresh = CHG_WD_INTERVAL;
di->ac_chg.enabled = di->pdata->ac_enabled;
di->ac_chg.external = false;
/* USB supply */
/* power_supply base class */
@ -2972,7 +2976,9 @@ static int ab8500_charger_probe(struct platform_device *pdev)
ARRAY_SIZE(ab8500_charger_voltage_map) - 1];
di->usb_chg.max_out_curr = ab8500_charger_current_map[
ARRAY_SIZE(ab8500_charger_current_map) - 1];
di->usb_chg.wdt_refresh = CHG_WD_INTERVAL;
di->usb_chg.enabled = di->pdata->usb_enabled;
di->usb_chg.external = false;
/* Create a work queue for the charger */
di->charger_wq =

12
drivers/power/abx500_chargalg.c
View File

@ -445,8 +445,18 @@ static int abx500_chargalg_kick_watchdog(struct abx500_chargalg *di)
{
/* Check if charger exists and kick watchdog if charging */
if (di->ac_chg && di->ac_chg->ops.kick_wd &&
di->chg_info.online_chg & AC_CHG)
di->chg_info.online_chg & AC_CHG) {
/*
* If AB charger watchdog expired, pm2xxx charging
* gets disabled. To be safe, kick both AB charger watchdog
* and pm2xxx watchdog.
*/
if (di->ac_chg->external &&
di->usb_chg && di->usb_chg->ops.kick_wd)
di->usb_chg->ops.kick_wd(di->usb_chg);
return di->ac_chg->ops.kick_wd(di->ac_chg);
}
else if (di->usb_chg && di->usb_chg->ops.kick_wd &&
di->chg_info.online_chg & USB_CHG)
return di->usb_chg->ops.kick_wd(di->usb_chg);

2
drivers/power/pm2301_charger.c
View File

@ -875,7 +875,9 @@ static int __devinit pm2xxx_wall_charger_probe(struct i2c_client *i2c_client,
ARRAY_SIZE(pm2xxx_charger_voltage_map) - 1];
pm2->ac_chg.max_out_curr = pm2xxx_charger_current_map[
ARRAY_SIZE(pm2xxx_charger_current_map) - 1];
pm2->ac_chg.wdt_refresh = WD_KICK_INTERVAL;
pm2->ac_chg.enabled = true;
pm2->ac_chg.external = true;
/* Create a work queue for the charger */
pm2->charger_wq =

2
drivers/power/pm2301_charger.h
View File

@ -32,7 +32,7 @@
/* Watchdog timeout constant */
#define WD_TIMER 0x30 /* 4min */
#define WD_KICK_INTERVAL (60 * HZ)
#define WD_KICK_INTERVAL (30 * HZ)
#define PM2XXX_NUM_INT_REG 0x6

3
include/linux/mfd/abx500/ux500_chargalg.h
View File

@ -28,13 +28,16 @@ struct ux500_charger_ops {
* @max_out_volt maximum output charger voltage in mV
* @max_out_curr maximum output charger current in mA
* @enabled indicates if this charger is used or not
* @external external charger unit (pm2xxx)
*/
struct ux500_charger {
struct power_supply psy;
struct ux500_charger_ops ops;
int max_out_volt;
int max_out_curr;
int wdt_refresh;
bool enabled;
bool external;
};
#endif