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| author | Martin Kepplinger <martink@posteo.de> | 2016-03-14 12:26:29 +0100 |
|---|---|---|
| committer | Jonathan Cameron <jic23@kernel.org> | 2016-03-20 11:27:23 +0100 |
| commit | bce59b602dace036b797144b1a5851318cbc85f0 (patch) | |
| tree | b075ce01df54804bd0ad923de1f0ac04721c2448 /drivers/iio/accel/mma8452.c | |
| parent | iio: mma8452: add i2c_device_id for mma8451 (diff) | |
| download | linux-bce59b602dace036b797144b1a5851318cbc85f0.tar.xz linux-bce59b602dace036b797144b1a5851318cbc85f0.zip | |
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 <martink@posteo.de>
Reviewed-by: Martina Kepplinger <martina.novakovic@zoho.com>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
Diffstat (limited to 'drivers/iio/accel/mma8452.c')
| -rw-r--r-- | drivers/iio/accel/mma8452.c | 2 |
1 files changed, 1 insertions, 1 deletions
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 <linux/module.h> |