From: Jonas Aaberg <jonas.aberg@xxxxxxxxxxxxxx>
Disable hardware if active when suspending if the hw can not
wake the system from suspend.
Cc: Dmitry Torokhov <dmitry.torokhov@xxxxxxxxx>
Cc: linux-input@xxxxxxxxxxxxxxx
Acked-by: Lee Jones <lee.jones@xxxxxxxxxx>
Signed-off-by: Jonas Aaberg <jonas.aberg@xxxxxxxxxxxxxx>
Signed-off-by: Philippe Langlais <philippe.langlais@xxxxxxxxxx>
Reviewed-by: Bengt Jonsson <bengt.g.jonsson@xxxxxxxxxxxxxx>
---
drivers/input/keyboard/gpio_keys.c | 13 +++++++++++++
1 file changed, 13 insertions(+)
diff --git a/drivers/input/keyboard/gpio_keys.c b/drivers/input/keyboard/gpio_keys.c
index cbb1add..7947315 100644
--- a/drivers/input/keyboard/gpio_keys.c
+++ b/drivers/input/keyboard/gpio_keys.c
@@ -46,6 +46,8 @@ struct gpio_keys_drvdata {
struct input_dev *input;
struct mutex disable_lock;
unsigned int n_buttons;
+ bool enabled;
+ bool enable_after_suspend;
int (*enable)(struct device *dev);
void (*disable)(struct device *dev);
struct gpio_button_data data[0];
@@ -524,6 +526,7 @@ static int gpio_keys_open(struct input_dev *input)
{
struct gpio_keys_drvdata *ddata = input_get_drvdata(input);
+ ddata->enabled = true;
return ddata->enable ? ddata->enable(input->dev.parent) : 0;
}
@@ -533,6 +536,7 @@ static void gpio_keys_close(struct input_dev *input)
if (ddata->disable)
ddata->disable(input->dev.parent);
+ ddata->enabled = false;
}
/*
@@ -674,6 +678,7 @@ static int __devinit gpio_keys_probe(struct platform_device *pdev)
ddata->n_buttons = pdata->nbuttons;
ddata->enable = pdata->enable;
ddata->disable = pdata->disable;
+ ddata->enabled = false;
mutex_init(&ddata->disable_lock);
platform_set_drvdata(pdev, ddata);
@@ -789,6 +794,10 @@ static int gpio_keys_suspend(struct device *dev)
if (bdata->button->wakeup)
enable_irq_wake(bdata->irq);
}
+ } else {
+ ddata->enable_after_suspend = ddata->enabled;
+ if (ddata->enabled)
+ gpio_keys_close(ddata->input);
}
return 0;
@@ -807,6 +816,10 @@ static int gpio_keys_resume(struct device *dev)
if (gpio_is_valid(bdata->button->gpio))
gpio_keys_gpio_report_event(bdata);
}
+
+ if (!device_may_wakeup(dev) && ddata->enable_after_suspend)
+ gpio_keys_open(ddata->input);
+
input_sync(ddata->input);
return 0;
--
1.7.9.5
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