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Input: gpio_keys - disable hardware on suspend

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Disable hardware if active when suspending if the hw can not
wake the system from suspend.

[Dmitry Torokhov: use input_dev->users instead of a separate flag]

Signed-off-by: Jonas Aaberg <jonas.aberg@stericsson.com>
Signed-off-by: Philippe Langlais <philippe.langlais@linaro.org>
Reviewed-by: Bengt Jonsson <bengt.g.jonsson@stericsson.com>
Signed-off-by: Lee Jones <lee.jones@linaro.org>
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
This commit is contained in:
Jonas Aaberg 2012-11-24 00:10:29 -08:00 committed by Dmitry Torokhov
parent 5b76d7b4cd
commit dda19a92f0
1 changed files with 22 additions and 5 deletions
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21
drivers/input/keyboard/gpio_keys.c
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@ -803,6 +803,7 @@ static int gpio_keys_remove(struct platform_device *pdev)
static int gpio_keys_suspend(struct device *dev)
{
struct gpio_keys_drvdata *ddata = dev_get_drvdata(dev);
struct input_dev *input = ddata->input;
int i;
if (device_may_wakeup(dev)) {
@ -811,6 +812,11 @@ static int gpio_keys_suspend(struct device *dev)
if (bdata->button->wakeup)
enable_irq_wake(bdata->irq);
}
} else {
mutex_lock(&input->mutex);
if (input->users)
gpio_keys_close(input);
mutex_unlock(&input->mutex);
}
return 0;
@ -819,16 +825,27 @@ static int gpio_keys_suspend(struct device *dev)
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 && device_may_wakeup(dev))
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;
}
#endif