Commit 2f804aca authored by Andy Shevchenko's avatar Andy Shevchenko Committed by Bartosz Golaszewski
Browse files

gpiolib: Kill unused GPIOF_EXPORT and Co 



There is no use of the GPIOF_EXPORT in the kernel. Kill it for good.

Signed-off-by: default avatarAndy Shevchenko <andriy.shevchenko@linux.intel.com>
Reviewed-by: default avatarLinus Walleij <linus.walleij@linaro.org>
Signed-off-by: default avatarBartosz Golaszewski <bartosz.golaszewski@linaro.org>
parent 6dd032ba

Documentation/driver-api/gpio/legacy.rst

+0 −3
Original line number Diff line number Diff line
@@ -322,9 +322,6 @@ where 'flags' is currently defined to specify the following properties: 
	* GPIOF_OPEN_DRAIN	- gpio pin is open drain type.

	* GPIOF_OPEN_SOURCE	- gpio pin is open source type.



	* GPIOF_EXPORT_DIR_FIXED	- export gpio to sysfs, keep direction

	* GPIOF_EXPORT_DIR_CHANGEABLE	- also export, allow changing direction



since GPIOF_INIT_* are only valid when configured as output, so group valid

combinations as:

Documentation/translations/zh_CN/driver-api/gpio/legacy.rst

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Original line number Diff line number Diff line
@@ -297,9 +297,6 @@ gpio_request()前将这类细节配置好，例如使用引脚控制子系统的 
	* GPIOF_OPEN_DRAIN	- gpio引脚为开漏信号

	* GPIOF_OPEN_SOURCE	- gpio引脚为源极开路信号



	* GPIOF_EXPORT_DIR_FIXED	- 将 gpio 导出到 sysfs，并保持方向

	* GPIOF_EXPORT_DIR_CHANGEABLE	- 同样是导出, 但允许改变方向



因为 GPIOF_INIT_* 仅有在配置为输出的时候才存在,所以有效的组合为:



	* GPIOF_IN		- 配置为输入

Documentation/translations/zh_TW/gpio.txt

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Original line number Diff line number Diff line
@@ -303,9 +303,6 @@ gpio_request()前將這類細節配置好，例如使用 pinctrl 子系統的映 
	* GPIOF_OPEN_DRAIN	- gpio引腳爲開漏信號

	* GPIOF_OPEN_SOURCE	- gpio引腳爲源極開路信號



	* GPIOF_EXPORT_DIR_FIXED	- 將 gpio 導出到 sysfs，並保持方向

	* GPIOF_EXPORT_DIR_CHANGEABLE	- 同樣是導出, 但允許改變方向



因爲 GPIOF_INIT_* 僅有在配置爲輸出的時候才存在,所以有效的組合爲:



	* GPIOF_IN		- 配置爲輸入

drivers/gpio/gpiolib-legacy.c

+0 −6
Original line number Diff line number Diff line
@@ -51,12 +51,6 @@ int gpio_request_one(unsigned gpio, unsigned long flags, const char *label) 
	if (err)

		goto free_gpio;



	if (flags & GPIOF_EXPORT) {

		err = gpiod_export(desc, flags & GPIOF_EXPORT_CHANGEABLE);

		if (err)

			goto free_gpio;

	}



	return 0;



 free_gpio:

include/linux/gpio.h

+0 −5
Original line number Diff line number Diff line
@@ -38,11 +38,6 @@ struct device; 
/* Gpio pin is open source */

#define GPIOF_OPEN_SOURCE	(1 << 4)



#define GPIOF_EXPORT		(1 << 5)

#define GPIOF_EXPORT_CHANGEABLE	(1 << 6)

#define GPIOF_EXPORT_DIR_FIXED	(GPIOF_EXPORT)

#define GPIOF_EXPORT_DIR_CHANGEABLE (GPIOF_EXPORT | GPIOF_EXPORT_CHANGEABLE)



/**

 * struct gpio - a structure describing a GPIO with configuration

 * @gpio:	the GPIO number