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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: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Reviewed-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Bartosz Golaszewski <bartosz.golaszewski@linaro.org>
This commit is contained in:
Andy Shevchenko 2023-05-30 01:14:45 +03:00 committed by Bartosz Golaszewski
parent 6dd032ba44
commit 2f804aca48
5 changed files with 0 additions and 20 deletions
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3
Documentation/driver-api/gpio/legacy.rst
View File

@ -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:

3
Documentation/translations/zh_CN/driver-api/gpio/legacy.rst
View File

@ -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

3
Documentation/translations/zh_TW/gpio.txt
View File

@ -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

6
drivers/gpio/gpiolib-legacy.c
View File

@ -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:

5
include/linux/gpio.h
View File

@ -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