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charger: smb345: monitor AICL result in case of VBUS drop

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VBUS drop level may not affect VBUS_DET to trigger IRQ,
it results in AICL result much lower without being noticed,
we check AICL result during battery polling and reconfig it
if neccessary

Bug: 10812199
Change-Id: I98dde8cdd5061d02851cb5f519c437b220906add
Signed-off-by: Hank_Lee <Hank_Lee@asus.com>
This commit is contained in:
Hank_Lee 2013-07-29 15:57:21 +08:00 committed by Ed Tam
parent 43c063e913
commit e7204e7b83
2 changed files with 6 additions and 18 deletions
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2
drivers/power/bq27541_battery.c
View file

@ -84,6 +84,7 @@ static int bq27541_get_property(struct power_supply *psy,
enum power_supply_property psp, union power_supply_propval *val);
extern unsigned get_usb_cable_status(void);
extern int smb345_config_thermal_charging(int temp, int volt, int rule);
extern void reconfig_AICL(void);
module_param(battery_current, uint, 0644);
module_param(battery_remaining_capacity, uint, 0644);
@ -380,6 +381,7 @@ static void battery_status_poll(struct work_struct *work)
if(!bq27541_battery_driver_ready)
BAT_NOTICE("battery driver not ready\n");
reconfig_AICL();
power_supply_changed(&bq27541_supply[Charger_Type_Battery]);
if (!bq27541_device->temp_err) {

22
drivers/power/smb345-charger.c
View file

@ -453,17 +453,7 @@ error:
static irqreturn_t smb345_inok_isr(int irq, void *dev_id)
{
struct smb345_charger *smb = dev_id;
int status = gpio_get_value(GPIO_AC_OK);
SMB_NOTICE("VBUS_DET = %s\n", status ? "H" : "L");
if (ac_on && !status)
queue_delayed_work(smb345_wq, &smb->cable_det_work, 0);
else {
if (delayed_work_pending(&charger->cable_det_work))
cancel_delayed_work(&charger->cable_det_work);
}
SMB_NOTICE("VBUS_DET = %s\n", gpio_get_value(GPIO_AC_OK) ? "H" : "L");
return IRQ_HANDLED;
}
@ -654,13 +644,10 @@ static void wireless_set_current_function(struct work_struct *dat)
queue_delayed_work(smb345_wq, &charger->wireless_set_current_work, WPC_SET_CURT_INTERVAL);
}
static void cable_det_work_function(struct work_struct *dat)
void reconfig_AICL(void)
{
struct i2c_client *client = charger->client;
if (delayed_work_pending(&charger->cable_det_work))
cancel_delayed_work(&charger->cable_det_work);
if (ac_on && !gpio_get_value(GPIO_AC_OK)) {
int retval;
retval = smb345_read(client, smb345_STS_REG_E);
@ -668,7 +655,7 @@ static void cable_det_work_function(struct work_struct *dat)
dev_err(&client->dev, "%s(): Failed in reading 0x%02x",
__func__, smb345_STS_REG_E);
else {
SMB_NOTICE("Status Reg E=0x02%x\n", retval);
SMB_NOTICE("Status Reg E=0x%02x\n", retval);
if ((retval & 0xF) <= 0x1) {
SMB_NOTICE("reconfig input current limit\n");
@ -677,6 +664,7 @@ static void cable_det_work_function(struct work_struct *dat)
}
}
}
EXPORT_SYMBOL(reconfig_AICL);
static int smb345_inok_irq(struct smb345_charger *smb)
{
@ -1242,8 +1230,6 @@ static int __devinit smb345_probe(struct i2c_client *client,
wireless_det_work_function);
INIT_DELAYED_WORK_DEFERRABLE(&charger->wireless_set_current_work,
wireless_set_current_function);
INIT_DELAYED_WORK_DEFERRABLE(&charger->cable_det_work,
cable_det_work_function);
wake_lock_init(&charger_wakelock, WAKE_LOCK_SUSPEND,
"charger_configuration");