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| author | Sean Paul <seanpaul@chromium.org> | 2018-02-16 23:47:43 +0300 |
|---|---|---|
| committer | Sean Paul <seanpaul@chromium.org> | 2018-02-16 23:47:43 +0300 |
| commit | d4da404f36b24b089d20db1fb27d8f99cb66f409 (patch) | |
| tree | 349c4b792281826652eb9e6d7a46ed6622dc90de /Documentation/gpio/sysfs.txt | |
| parent | fa4127c5eb8def998fd8a471d51a4f2560dea0a2 (diff) | |
| parent | 933519a5a269d8460450545adefcb5caec622cac (diff) | |
| download | linux-d4da404f36b24b089d20db1fb27d8f99cb66f409.tar.xz | |
Merge airlied/drm-next into drm-misc-next
Backmerge 4.15 and hdcp topic branch
Signed-off-by: Sean Paul <seanpaul@chromium.org>
Diffstat (limited to 'Documentation/gpio/sysfs.txt')
| -rw-r--r-- | Documentation/gpio/sysfs.txt | 11 |
1 files changed, 11 insertions, 0 deletions
diff --git a/Documentation/gpio/sysfs.txt b/Documentation/gpio/sysfs.txt index aeab01aa4d00..6cdeab8650cd 100644 --- a/Documentation/gpio/sysfs.txt +++ b/Documentation/gpio/sysfs.txt @@ -1,6 +1,17 @@ GPIO Sysfs Interface for Userspace ================================== +THIS ABI IS DEPRECATED, THE ABI DOCUMENTATION HAS BEEN MOVED TO +Documentation/ABI/obsolete/sysfs-gpio AND NEW USERSPACE CONSUMERS +ARE SUPPOSED TO USE THE CHARACTER DEVICE ABI. THIS OLD SYSFS ABI WILL +NOT BE DEVELOPED (NO NEW FEATURES), IT WILL JUST BE MAINTAINED. + +Refer to the examples in tools/gpio/* for an introduction to the new +character device ABI. Also see the userspace header in +include/uapi/linux/gpio.h + +The deprecated sysfs ABI +------------------------ Platforms which use the "gpiolib" implementors framework may choose to configure a sysfs user interface to GPIOs. This is different from the debugfs interface, since it provides control over GPIO direction and |