Input: gpio_keys - disable hardware on suspend
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>
diff --git a/drivers/input/keyboard/gpio_keys.c b/drivers/input/keyboard/gpio_keys.c
index c7764ca..79435de 100644
--- a/drivers/input/keyboard/gpio_keys.c
+++ b/drivers/input/keyboard/gpio_keys.c
@@ -803,6 +803,7 @@
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 @@
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_resume(struct device *dev)
{
struct gpio_keys_drvdata *ddata = dev_get_drvdata(dev);
+ struct input_dev *input = ddata->input;
+ int error = 0;
int i;
- for (i = 0; i < ddata->pdata->nbuttons; i++) {
- struct gpio_button_data *bdata = &ddata->data[i];
- if (bdata->button->wakeup && device_may_wakeup(dev))
- disable_irq_wake(bdata->irq);
+ 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);
}
- gpio_keys_report_state(ddata);
+ if (error)
+ return error;
+ gpio_keys_report_state(ddata);
return 0;
}
#endif