From: Martin Kepplinger Date: Mon, 14 Mar 2016 11:26:29 +0000 (+0100) Subject: iio: mma8452: use runtime pm instead of device specific autosleep X-Git-Url: https://git.karo-electronics.de/?a=commitdiff_plain;h=bce59b602dace036b797144b1a5851318cbc85f0;p=linux-beck.git iio: mma8452: use runtime pm instead of device specific autosleep What is this autosleep? ----------------------- It slows down the device after x seconds of inactivity. The thing is, we have really achieved almost the same by runtime pm. differnces are: autosleep * uses more power during inactivity * the first read after inactivity slightly faster * complicated to understand for the user * no documented sysfs interface (afaik) * complicated to read and maintain runtime pm * already merged in mma8452 * uses less power during inactivity * first read after inactivity slower * easy to use. well documented. * easy to maintain and understand The two approaches solve the same problem. runtime pm has more advantages than autosleep and comes quite close to it's behaviour anyways. As I see it, autosleep, even if somehow supported, would never be used anyways. So resolve this issue by "ignoring" autosleep. Signed-off-by: Martin Kepplinger Reviewed-by: Martina Kepplinger Signed-off-by: Jonathan Cameron --- diff --git a/drivers/iio/accel/mma8452.c b/drivers/iio/accel/mma8452.c index 6aa2517b4688..e225d3c53bd5 100644 --- a/drivers/iio/accel/mma8452.c +++ b/drivers/iio/accel/mma8452.c @@ -17,7 +17,7 @@ * * 7-bit I2C slave address 0x1c/0x1d (pin selectable) * - * TODO: orientation events, autosleep + * TODO: orientation events */ #include