2 Commits

Author	SHA1	Message	Date
Kent Gibson	08d94c7428	Documentation: gpio: Clarify effect of active low flag on line edges ... The documentation does not make sufficiently clear that edge polarity is based on changes to the logical line values, and that the physical polarity of edges is dependent on the active low flag. Clarify the relationship between the active low flag and edge polarity for the functions that read edge events. Suggested-by: David C. Rankin <drankinatty@gmail.com> Signed-off-by: Kent Gibson <warthog618@gmail.com> Link: https://lore.kernel.org/r/20240610092157.9147-3-warthog618@gmail.com Signed-off-by: Bartosz Golaszewski <bartosz.golaszewski@linaro.org>	2024-06-12 14:02:54 +02:00
Kent Gibson	32a0a0da53	Documentation: gpio: add chardev userspace API documentation ... Add documentation for the GPIO character device userspace API. Added to the userspace-api book, but also provide a link from the admin-guide book, as historically the GPIO documentation has been there. Signed-off-by: Kent Gibson <warthog618@gmail.com> Reviewed-by: Linus Walleij <linus.walleij@linaro.org> Signed-off-by: Bartosz Golaszewski <bartosz.golaszewski@linaro.org>	2024-01-22 10:47:14 +01:00