diff options
| author |   Anti Sullin <anti.sullin@artecdesign.ee> | 2007-09-26 00:01:17 -0400 |
|---|---|---|
| committer |   Dmitry Torokhov <dmitry.torokhov@gmail.com> | 2007-09-26 00:01:17 -0400 |
| commit | e15b02138b89d7bc053817e6f7601e92e29d371c (patch) | |
| tree | ba0d3c404022e91bf072558ee4f0ef9de73ffe36 | |
| parent | Input: gpio_keys - verify that supplied GPIO numbers are valid (diff) | |
| download | linux-dev-e15b02138b89d7bc053817e6f7601e92e29d371c.tar.xz linux-dev-e15b02138b89d7bc053817e6f7601e92e29d371c.zip | |
Input: gpio-keys - add suspend/resume support
This patch adds suspend/resume support and enables wakeup from
gpio_keys buttons.
Signed-off-by: Anti Sullin <anti.sullin@artecdesign.ee>
Signed-off-by: Dmitry Torokhov <dtor@mail.ru>
| -rw-r--r-- | drivers/input/keyboard/gpio_keys.c | 52 | ||||
| -rw-r--r-- | include/linux/gpio_keys.h | 1 |
2 files changed, 53 insertions, 0 deletions
diff --git a/drivers/input/keyboard/gpio_keys.c b/drivers/input/keyboard/gpio_keys.c index b3069bc00f03..3d6820b4465b 100644 --- a/drivers/input/keyboard/gpio_keys.c +++ b/drivers/input/keyboard/gpio_keys.c @@ -55,6 +55,7 @@ static int __devinit gpio_keys_probe(struct platform_device *pdev) struct gpio_keys_platform_data *pdata = pdev->dev.platform_data; struct input_dev *input; int i, error; + int wakeup = 0; input = input_allocate_device(); if (!input) @@ -100,6 +101,9 @@ static int __devinit gpio_keys_probe(struct platform_device *pdev) goto fail; } + if (button->wakeup) + wakeup = 1; + input_set_capability(input, type, button->code); } @@ -111,6 +115,8 @@ static int __devinit gpio_keys_probe(struct platform_device *pdev) goto fail; } + device_init_wakeup(&pdev->dev, wakeup); + return 0; fail: @@ -129,6 +135,8 @@ static int __devexit gpio_keys_remove(struct platform_device *pdev) struct input_dev *input = platform_get_drvdata(pdev); int i; + device_init_wakeup(&pdev->dev, 0); + for (i = 0; i < pdata->nbuttons; i++) { int irq = gpio_to_irq(pdata->buttons[i].gpio); free_irq(irq, pdev); @@ -139,9 +147,53 @@ static int __devexit gpio_keys_remove(struct platform_device *pdev) return 0; } + +#ifdef CONFIG_PM +static int gpio_keys_suspend(struct platform_device *pdev, pm_message_t state) +{ + struct gpio_keys_platform_data *pdata = pdev->dev.platform_data; + int i; + + if (device_may_wakeup(&pdev->dev)) { + for (i = 0; i < pdata->nbuttons; i++) { + struct gpio_keys_button *button = &pdata->buttons[i]; + if (button->wakeup) { + int irq = gpio_to_irq(button->gpio); + enable_irq_wake(irq); + } + } + } + + return 0; +} + +static int gpio_keys_resume(struct platform_device *pdev) +{ + struct gpio_keys_platform_data *pdata = pdev->dev.platform_data; + int i; + + if (device_may_wakeup(&pdev->dev)) { + for (i = 0; i < pdata->nbuttons; i++) { + struct gpio_keys_button *button = &pdata->buttons[i]; + if (button->wakeup) { + int irq = gpio_to_irq(button->gpio); + disable_irq_wake(irq); + } + } + } + + return 0; +} +#else +#define gpio_keys_suspend NULL +#define gpio_keys_resume NULL +#endif + struct platform_driver gpio_keys_device_driver = { .probe = gpio_keys_probe, .remove = __devexit_p(gpio_keys_remove), + .suspend = gpio_keys_suspend, + .resume = gpio_keys_resume, .driver = { .name = "gpio-keys", } diff --git a/include/linux/gpio_keys.h b/include/linux/gpio_keys.h index 265d17830a0f..c6d3a9de5634 100644 --- a/include/linux/gpio_keys.h +++ b/include/linux/gpio_keys.h @@ -8,6 +8,7 @@ struct gpio_keys_button { int active_low; char *desc; int type; /* input event type (EV_KEY, EV_SW) */ + int wakeup; /* configure the button as a wake-up source */ }; struct gpio_keys_platform_data { |