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| author | Linus Walleij <linus.walleij@linaro.org> | 2016-02-12 14:48:23 +0100 |
|---|---|---|
| committer | Linus Walleij <linus.walleij@linaro.org> | 2016-02-19 09:48:41 +0100 |
| commit | df4878e969ccc047da45d2cd3af5d08031da1593 (patch) | |
| tree | 2677387492b60fd5c6a42a317bde0e7e965aa8fa /include/linux/gpio | |
| parent | 0a7439ef755d46a2e61d460d7a440f7fa65d7182 (diff) | |
| download | lwn-df4878e969ccc047da45d2cd3af5d08031da1593.tar.gz lwn-df4878e969ccc047da45d2cd3af5d08031da1593.zip | |
gpio: store reflect the label to userspace
The gpio_chip label is useful for userspace to understand what
kind of GPIO chip it is dealing with. Let's store a copy of this
label in the gpio_device, add it to the struct passed to userspace
for GPIO_GET_CHIPINFO_IOCTL and modify lsgpio to show it.
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Diffstat (limited to 'include/linux/gpio')
| -rw-r--r-- | include/linux/gpio/driver.h | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/include/linux/gpio/driver.h b/include/linux/gpio/driver.h index ff96d0f9fceb..639607658ed8 100644 --- a/include/linux/gpio/driver.h +++ b/include/linux/gpio/driver.h @@ -21,7 +21,8 @@ struct gpio_device; /** * struct gpio_chip - abstract a GPIO controller - * @label: for diagnostics + * @label: a functional name for the GPIO device, such as a part + * number or the name of the SoC IP-block implementing it. * @gpiodev: the internal state holder, opaque struct * @parent: optional parent device providing the GPIOs * @owner: helps prevent removal of modules exporting active GPIOs |