diff options
Diffstat (limited to 'Documentation')
| -rw-r--r-- | Documentation/ABI/obsolete/sysfs-gpio | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/Documentation/ABI/obsolete/sysfs-gpio b/Documentation/ABI/obsolete/sysfs-gpio index ff694708a3be..0d3f12c4dcbd 100644 --- a/Documentation/ABI/obsolete/sysfs-gpio +++ b/Documentation/ABI/obsolete/sysfs-gpio @@ -27,6 +27,9 @@ Description: /base ... (r/o) same as N /label ... (r/o) descriptive chip name /ngpio ... (r/o) number of GPIOs; numbered N to N + (ngpio - 1) + /gpio<OFFSET> + /value ... always readable, writes fail for input GPIOs + /direction ... r/w as: in, out (default low); write: high, low /chipX ... for each gpiochip; #X is the gpio device ID /export ... asks the kernel to export a GPIO at HW offset X to userspace /unexport ... to return a GPIO at HW offset X to the kernel |