From 173bdd746b128241d3d6d202142820692e7dd530 Mon Sep 17 00:00:00 2001 From: Shubhrajyoti D Date: Tue, 3 Aug 2010 19:44:40 -0700 Subject: Input: gpio_keys - add hooks to enable/disable device Allow platform code to specify callbcks that will be invoked when input device is opened or closed, allowing, for example, to enable the device. Signed-off-by: Shubhrajyoti D Signed-off-by: Dmitry Torokhov --- drivers/input/keyboard/gpio_keys.c | 22 ++++++++++++++++++++++ 1 file changed, 22 insertions(+) (limited to 'drivers/input') diff --git a/drivers/input/keyboard/gpio_keys.c b/drivers/input/keyboard/gpio_keys.c index a9fd147f2ba7..6069abe31e42 100644 --- a/drivers/input/keyboard/gpio_keys.c +++ b/drivers/input/keyboard/gpio_keys.c @@ -39,6 +39,8 @@ struct gpio_keys_drvdata { struct input_dev *input; struct mutex disable_lock; unsigned int n_buttons; + int (*enable)(struct device *dev); + void (*disable)(struct device *dev); struct gpio_button_data data[0]; }; @@ -423,6 +425,21 @@ fail2: return error; } +static int gpio_keys_open(struct input_dev *input) +{ + struct gpio_keys_drvdata *ddata = input_get_drvdata(input); + + return ddata->enable ? ddata->enable(input->dev.parent) : 0; +} + +static void gpio_keys_close(struct input_dev *input) +{ + struct gpio_keys_drvdata *ddata = input_get_drvdata(input); + + if (ddata->disable) + ddata->disable(input->dev.parent); +} + static int __devinit gpio_keys_probe(struct platform_device *pdev) { struct gpio_keys_platform_data *pdata = pdev->dev.platform_data; @@ -444,13 +461,18 @@ static int __devinit gpio_keys_probe(struct platform_device *pdev) ddata->input = input; ddata->n_buttons = pdata->nbuttons; + ddata->enable = pdata->enable; + ddata->disable = pdata->disable; mutex_init(&ddata->disable_lock); platform_set_drvdata(pdev, ddata); + input_set_drvdata(input, ddata); input->name = pdev->name; input->phys = "gpio-keys/input0"; input->dev.parent = &pdev->dev; + input->open = gpio_keys_open; + input->close = gpio_keys_close; input->id.bustype = BUS_HOST; input->id.vendor = 0x0001; -- cgit v1.2.3-58-ga151