On 5/30/17 9:22 PM, Andy Shevchenko wrote: > On Sun, May 28, 2017 at 4:47 PM, Hao Wei Tee <angelsl@xxxxxxxxxxx> wrote: >> On 5/27/17 3:31 PM, Hao Wei Tee wrote: >>> This exposes the battery conservation mode present on some (?) IdeaPads. >>> The mode is set by calling ACPI method SBMC with argument 3 (on) or >>> 5 (off). Status is reported in bit 5 of the return value of ACPI method >>> GBMD. >>> >>> This patch was written based on an IdeaPad U430p. I'm not sure if the ACPI >>> methods are the same across all IdeaPads, so it would be great if this got more >>> testing across other models before it's merged. >> >> I got someone to test on an IdeaPad Y510p. It works on that too. > > Do we have any other option that expose something via sysfs? > Sorry, not sure what you meant. If you meant > Do we have any other options than expose something via sysfs? I'm not sure, maybe an ioctl? That wouldn't be very convenient though. The tp_smapi module (not in mainline) that exposes the battery threshold functionality for ThinkPads also uses sysfs. If you meant > Do we have any other options that expose something via sysfs? yes, camera_power, fan_mode, touchpad and conservation_mode. Hao Wei
