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Commit e209c5a7 authored by Sangwook Lee's avatar Sangwook Lee Committed by John W. Linville
Browse files

net:rfkill: add a gpio setup function into GPIO rfkill 



Add a gpio setup function which gives a chance to set up
platform specific configuration such as pin multiplexing,
input/output direction at the runtime or booting time.

Signed-off-by: default avatarSangwook Lee <sangwook.lee@linaro.org>
Signed-off-by: default avatarJohn W. Linville <linville@tuxdriver.com>
parent 893d73f4

include/linux/rfkill-gpio.h

+4 −0
Original line number Diff line number Diff line
@@ -30,6 +30,8 @@ 
 * @reset_gpio:		GPIO which is used for reseting rfkill switch

 * @shutdown_gpio:	GPIO which is used for shutdown of rfkill switch

 * @power_clk_name:	[optional] name of clk to turn off while blocked

 * @gpio_runtime_close:	clean up platform specific gpio configuration

 * @gpio_runtime_setup:	set up platform specific gpio configuration

 */



struct rfkill_gpio_platform_data {
@@ -38,6 +40,8 @@ struct rfkill_gpio_platform_data { 
	int			shutdown_gpio;

	const char		*power_clk_name;

	enum rfkill_type	type;

	void	(*gpio_runtime_close)(struct platform_device *);

	int	(*gpio_runtime_setup)(struct platform_device *);

};



#endif /* __RFKILL_GPIO_H */

net/rfkill/rfkill-gpio.c

+11 −0
Original line number Diff line number Diff line
@@ -101,6 +101,14 @@ static int rfkill_gpio_probe(struct platform_device *pdev) 
	if (!rfkill)

		return -ENOMEM;



	if (pdata->gpio_runtime_setup) {

		ret = pdata->gpio_runtime_setup(pdev);

		if (ret) {

			pr_warn("%s: can't set up gpio\n", __func__);

			return ret;

		}

	}



	rfkill->pdata = pdata;



	len = strlen(pdata->name);
@@ -182,7 +190,10 @@ fail_alloc: 
static int rfkill_gpio_remove(struct platform_device *pdev)

{

	struct rfkill_gpio_data *rfkill = platform_get_drvdata(pdev);

	struct rfkill_gpio_platform_data *pdata = pdev->dev.platform_data;



	if (pdata->gpio_runtime_close)

		pdata->gpio_runtime_close(pdev);

	rfkill_unregister(rfkill->rfkill_dev);

	rfkill_destroy(rfkill->rfkill_dev);

	if (gpio_is_valid(rfkill->pdata->shutdown_gpio))