static int gpio_keys_resume(struct device *dev)
{
struct gpio_keys_drvdata *ddata = dev_get_drvdata(dev);
struct input_dev *input = ddata->input;
int error = 0;
int i;
if (device_may_wakeup(dev)) {
for (i = 0; i < ddata->pdata->nbuttons; i++) {
struct gpio_button_data *bdata = &ddata->data[i];
if (bdata->button->wakeup)
disable_irq_wake(bdata->irq);
}
} else {
mutex_lock(&input->mutex);
if (input->users)
error = gpio_keys_open(input);
mutex_unlock(&input->mutex);
}
if (error)
return error;
gpio_keys_report_state(ddata);
return 0;
}
static int gpio_keys_open(struct input_dev *input)
{
struct gpio_keys_drvdata *ddata = input_get_drvdata(input);
const struct gpio_keys_platform_data *pdata = ddata->pdata;
int error;
if (pdata->enable) {
error = pdata->enable(input->dev.parent);
if (error)
return error;
}
/* Report current state of buttons that are connected to GPIOs */
gpio_keys_report_state(ddata);
return 0;
}
static int gpio_keys_open(struct input_dev *input)
{
struct gpio_keys_drvdata *ddata = input_get_drvdata(input);
const struct gpio_keys_platform_data *pdata = ddata->pdata;
int error;
#if defined(CONFIG_SENSORS_HALL)
int ret = 0;
int irq = gpio_to_irq(ddata->gpio_flip_cover);
if(ddata->gpio_flip_cover == 0) {
printk(KERN_DEBUG"[HALL_IC] : %s skip flip\n", __func__);
goto skip_flip;
}
printk(KERN_DEBUG"[HALL_IC] : %s\n", __func__);
INIT_DELAYED_WORK(&ddata->flip_cover_dwork, flip_cover_work);
ret = request_threaded_irq(
irq, NULL,
flip_cover_detect,
IRQF_DISABLED | IRQF_TRIGGER_RISING |
IRQF_TRIGGER_FALLING | IRQF_ONESHOT,
"flip_cover", ddata);
if (ret < 0) {
printk(KERN_ERR "keys: failed to request flip cover irq %d gpio %d\n",
irq, ddata->gpio_flip_cover);
} else {
/* update the current status */
schedule_delayed_work(&ddata->flip_cover_dwork, HZ / 2);
}
skip_flip:
#endif
if (pdata->enable) {
error = pdata->enable(input->dev.parent);
if (error)
return error;
}
/* Report current state of buttons that are connected to GPIOs */
gpio_keys_report_state(ddata);
return 0;
}