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gpio: uapi: document possible values of gpioevent_data.id

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Clarify the possible values of event id, rather than requiring the
reader to infer.

Signed-off-by: Kent Gibson <warthog618@gmail.com>
Reviewed-by: Andy Shevchenko <andy@kernel.org>
Signed-off-by: Bartosz Golaszewski <bartosz.golaszewski@linaro.org>
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Kent Gibson 2024-01-09 22:02:20 +08:00 committed by Bartosz Golaszewski
parent a6beb0b461
commit ead7c5817c
1 changed files with 2 additions and 1 deletions
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include/uapi/linux/gpio.h
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@ -490,7 +490,8 @@ struct gpioevent_request {
/**
* struct gpioevent_data - The actual event being pushed to userspace
* @timestamp: best estimate of time of event occurrence, in nanoseconds
* @id: event identifier
* @id: event identifier, one of %GPIOEVENT_EVENT_RISING_EDGE or
* %GPIOEVENT_EVENT_FALLING_EDGE
*
* Note: This struct is part of ABI v1 and is deprecated.
* Use &struct gpio_v2_line_event instead.