On Tue 2019-04-02 15:30:37, William Breathitt Gray wrote: > This patch adds standard documentation for the userspace sysfs > attributes of the Generic Counter interface. > > Reviewed-by: Jonathan Cameron <Jonathan.Cameron@xxxxxxxxxx> > Signed-off-by: William Breathitt Gray <vilhelm.gray@xxxxxxxxx> > --- > Documentation/ABI/testing/sysfs-bus-counter | 230 ++++++++++++++++++++ > MAINTAINERS | 1 + > 2 files changed, 231 insertions(+) > create mode 100644 Documentation/ABI/testing/sysfs-bus-counter > > diff --git a/Documentation/ABI/testing/sysfs-bus-counter b/Documentation/ABI/testing/sysfs-bus-counter > new file mode 100644 > index 000000000000..566bd99fe0a5 > --- /dev/null > +++ b/Documentation/ABI/testing/sysfs-bus-counter > @@ -0,0 +1,230 @@ > +What: /sys/bus/counter/devices/counterX/countY/count > +KernelVersion: 5.2 > +Contact: linux-iio@xxxxxxxxxxxxxxx > +Description: > + Count data of Count Y represented as a string. > + > +What: /sys/bus/counter/devices/counterX/countY/ceiling > +KernelVersion: 5.2 > +Contact: linux-iio@xxxxxxxxxxxxxxx > +Description: > + Count value ceiling for Count Y. This is the upper limit for the > + respective counter. > + > +What: /sys/bus/counter/devices/counterX/countY/floor > +KernelVersion: 5.2 > +Contact: linux-iio@xxxxxxxxxxxxxxx > +Description: > + Count value floor for Count Y. This is the lower limit for the > + respective counter. > + > +What: /sys/bus/counter/devices/counterX/countY/count_mode > +KernelVersion: 5.2 > +Contact: linux-iio@xxxxxxxxxxxxxxx > +Description: > + Count mode for channel Y. The ceiling and floor values for > + Count Y are used by the count mode where required. The following > + count modes are available: > + > + normal: > + Counting is continuous in either direction. > + > + range limit: > + An upper or lower limit is set, mimicking limit switches > + in the mechanical counterpart. The upper limit is set to > + the Count Y ceiling value, while the lower limit is set > + to the Count Y floor value. The counter freezes at > + count = ceiling when counting up, and at count = floor > + when counting down. At either of these limits, the > + counting is resumed only when the count direction is > + reversed. > + > + non-recycle: > + The counter is disabled whenever a counter overflow or > + underflow takes place. The counter is re-enabled when a > + new count value is loaded to the counter via a preset > + operation or direct write. > + > + modulo-n: > + A count value boundary is set between the Count Y floor > + value and the Count Y ceiling value. The counter is > + reset to the Count Y floor value at count = ceiling when > + counting up, while the counter is set to the Count Y > + ceiling value at count = floor when counting down; the > + counter does not freeze at the boundary points, but > + counts continuously throughout. > + > +What: /sys/bus/counter/devices/counterX/countY/count_mode_available > +What: /sys/bus/counter/devices/counterX/countY/error_noise_available > +What: /sys/bus/counter/devices/counterX/countY/function_available > +What: /sys/bus/counter/devices/counterX/countY/signalZ_action_available > +KernelVersion: 5.2 > +Contact: linux-iio@xxxxxxxxxxxxxxx > +Description: > + Discrete set of available values for the respective Count Y > + configuration are listed in this file. Values are delimited by > + newline characters. Elsewhere in sysfs we do space-separated: pavel@amd:~$ cat /sys/power/state freeze mem disk And we use [] to mark current selection: pavel@amd:~$ cat /sys/class/leds/tpacpi\:\:thinkvantage/trigger [none] bluetooth-power rfkill-any rfkill-none kbd-scrolllock kbd-numlock kbd-capslock kbd-kanalock kbd-shiftlock kbd-altgrlock kbd-ctrllock kbd-altlock kbd-shiftllock kbd-shiftrlock kbd-ctrlllock kbd-ctrlrlock AC-online BAT0-charging-or-full BAT0-charging BAT0-full BAT0-charging-blink-full-solid rfkill0 phy0rx phy0tx phy0assoc phy0radio phy0tpt mmc0 timer heartbeat audio-mute audio-micmute rfkill1 Note this only works if you have less than PAGE_SIZE of entries... and will never have more. Pavel -- (english) http://www.livejournal.com/~pavelmachek (cesky, pictures) http://atrey.karlin.mff.cuni.cz/~pavel/picture/horses/blog.html
Attachment:
signature.asc
Description: Digital signature
