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Commit 173bdd74 authored by Shubhrajyoti D's avatar Shubhrajyoti D Committed by Dmitry Torokhov
Browse files

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: default avatarShubhrajyoti D <shubhrajyoti@ti.com>
Signed-off-by: default avatarDmitry Torokhov <dtor@mail.ru>
parent 448cd166

drivers/input/keyboard/gpio_keys.c

+22 −0
Original line number Diff line number Diff line
@@ -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;

include/linux/gpio_keys.h

+2 −0
Original line number Diff line number Diff line
@@ -17,6 +17,8 @@ struct gpio_keys_platform_data { 
	struct gpio_keys_button *buttons;

	int nbuttons;

	unsigned int rep:1;		/* enable input subsystem auto repeat */

	int (*enable)(struct device *dev);

	void (*disable)(struct device *dev);

};



#endif