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pm2301-charger: Adjust interrupt handler behavior 

Signed-off-by: M BenZoubeir <mustapha.ben.zoubeir-xsig@stericsson.com>
Signed-off-by: Lee Jones <lee.jones@linaro.org>
Reviewed-by: Philippe LANGLAIS <philippe.langlais@stericsson.com>
This commit is contained in:
M BenZoubeir 2012-09-13 10:34:18 +02:00 committed by Lee Jones
parent b3ea5f451e
commit f4095a0f06
2 changed files with 25 additions and 22 deletions
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35
drivers/power/pm2301_charger.c
View File

@ -493,6 +493,7 @@ static irqreturn_t pm2xxx_irq_int(int irq, void *data)
struct pm2xxx_interrupts *interrupt = pm2->pm2_int;
int i;
do {
for (i = 0; i < PM2XXX_NUM_INT_REG; i++) {
pm2xxx_reg_read(pm2,
pm2xxx_interrupt_registers[i],
@ -501,6 +502,7 @@ static irqreturn_t pm2xxx_irq_int(int irq, void *data)
if (interrupt->reg[i] > 0)
interrupt->handler[i](pm2, interrupt->reg[i]);
}
} while (gpio_get_value(pm2->pdata->gpio_irq_number) == 0);
return IRQ_HANDLED;
}
@ -951,6 +953,7 @@ static int pm2xxx_wall_charger_probe(struct i2c_client *i2c_client,
struct pm2xxx_charger *pm2;
int ret = 0;
u8 val;
int i;
pm2 = kzalloc(sizeof(struct pm2xxx_charger), GFP_KERNEL);
if (!pm2) {
@ -1062,24 +1065,25 @@ static int pm2xxx_wall_charger_probe(struct i2c_client *i2c_client,
}
/* Register interrupts */
ret = request_threaded_irq(pm2->pdata->irq_number, NULL,
ret = request_threaded_irq(gpio_to_irq(pm2->pdata->gpio_irq_number),
NULL,
pm2xxx_charger_irq[0].isr,
pm2->pdata->irq_type,
pm2xxx_charger_irq[0].name, pm2);
if (ret != 0) {
dev_err(pm2->dev, "failed to request %s IRQ %d: %d\n",
pm2xxx_charger_irq[0].name, pm2->pdata->irq_number, ret);
pm2xxx_charger_irq[0].name,
gpio_to_irq(pm2->pdata->gpio_irq_number), ret);
goto unregister_pm2xxx_charger;
}
/* pm interrupt can wake up system */
ret = enable_irq_wake(pm2->pdata->irq_number);
ret = enable_irq_wake(gpio_to_irq(pm2->pdata->gpio_irq_number));
if (ret) {
dev_err(pm2->dev, "failed to set irq wake\n");
goto unregister_pm2xxx_interrupt;
}
/*Initialize lock*/
mutex_init(&pm2->lock);
/*
@ -1099,16 +1103,16 @@ static int pm2xxx_wall_charger_probe(struct i2c_client *i2c_client,
}
set_lpn_pin(pm2);
/* read interrupt registers */
for (i = 0; i < PM2XXX_NUM_INT_REG; i++)
pm2xxx_reg_read(pm2,
pm2xxx_interrupt_registers[i],
&val);
ret = pm2xxx_charger_detection(pm2, &val);
if ((ret == 0) && val) {
/*
* When boot is due to AC charger plug-in,
* read interrupt registers
*/
pm2xxx_reg_read(pm2, PM2XXX_REG_INT1, &val);
pm2xxx_reg_read(pm2, PM2XXX_REG_INT2, &val);
pm2xxx_reg_read(pm2, PM2XXX_REG_INT4, &val);
pm2->ac.charger_connected = 1;
ab8500_override_turn_on_stat(~AB8500_POW_KEY_1_ON,
AB8500_MAIN_CH_DET);
@ -1122,10 +1126,10 @@ static int pm2xxx_wall_charger_probe(struct i2c_client *i2c_client,
free_gpio:
gpio_free(pm2->lpn_pin);
disable_pm2_irq_wake:
disable_irq_wake(pm2->pdata->irq_number);
disable_irq_wake(gpio_to_irq(pm2->pdata->gpio_irq_number));
unregister_pm2xxx_interrupt:
/* disable interrupt */
free_irq(pm2->pdata->irq_number, pm2);
free_irq(gpio_to_irq(pm2->pdata->gpio_irq_number), pm2);
unregister_pm2xxx_charger:
/* unregister power supply */
power_supply_unregister(&pm2->ac_chg.psy);
@ -1148,10 +1152,10 @@ static int pm2xxx_wall_charger_remove(struct i2c_client *i2c_client)
pm2xxx_charger_ac_en(&pm2->ac_chg, false, 0, 0);
/* Disable wake by pm interrupt */
disable_irq_wake(pm2->pdata->irq_number);
disable_irq_wake(gpio_to_irq(pm2->pdata->gpio_irq_number));
/* Disable interrupts */
free_irq(pm2->pdata->irq_number, pm2);
free_irq(gpio_to_irq(pm2->pdata->gpio_irq_number), pm2);
/* Delete the work queue */
destroy_workqueue(pm2->charger_wq);
@ -1163,7 +1167,6 @@ static int pm2xxx_wall_charger_remove(struct i2c_client *i2c_client)
power_supply_unregister(&pm2->ac_chg.psy);
/*Free GPIO60*/
gpio_free(pm2->lpn_pin);
kfree(pm2);

2
include/linux/pm2301_charger.h
View File

@ -48,7 +48,7 @@ struct pm2xxx_charger_platform_data {
size_t num_supplicants;
int i2c_bus;
const char *label;
int irq_number;
int gpio_irq_number;
unsigned int lpn_gpio;
int irq_type;
};