diff options
| author | Linus Walleij <linus.walleij@linaro.org> | 2016-09-01 11:44:48 +0200 |
|---|---|---|
| committer | Jonathan Cameron <jic23@kernel.org> | 2016-09-18 11:35:59 +0100 |
| commit | 9a9a369d6178dd4e263c49085ce1b37e1e8f63a0 (patch) | |
| tree | 11561a13081f635b5e84a49cacbb49b52b694efd /drivers/iio/accel/kxsd9-spi.c | |
| parent | 79383aaec47a0ea0df49728ad0b8e72c4ac58fd0 (diff) | |
iio: accel: kxsd9: Deploy system and runtime PM
This deploys runtime and system PM in the KXSD9 driver:
- Use the force_runtime_suspend/resume callbacks as system PM
operations.
- Add buffer prepare/unprepare callbacks to grab the runtime
PM while we're using buffered reads and put get/put_autosuspend
in these.
- Insert get/put_autosuspend calls anywhere the IO is used from
the raw read/write callbacks.
- Move the fullscale setting to be cached in the state container
so we can restore it properly when coming back from
system/runtime suspend.
- Set the autosuspend delay to two orders of magnitude that of
the sensor start-up time (20ms) so we will autosuspend after
2s.
- Register the callbacks in both the SPI and I2C subdrivers.
Tested with the I2C KXSD9 on the Qualcomm APQ8060 Dragonboard.
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
Diffstat (limited to 'drivers/iio/accel/kxsd9-spi.c')
| -rw-r--r-- | drivers/iio/accel/kxsd9-spi.c | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/drivers/iio/accel/kxsd9-spi.c b/drivers/iio/accel/kxsd9-spi.c index c5af51b7dd7e..b7d0078fd00e 100644 --- a/drivers/iio/accel/kxsd9-spi.c +++ b/drivers/iio/accel/kxsd9-spi.c @@ -43,6 +43,7 @@ MODULE_DEVICE_TABLE(spi, kxsd9_spi_id); static struct spi_driver kxsd9_spi_driver = { .driver = { .name = "kxsd9", + .pm = &kxsd9_dev_pm_ops, }, .probe = kxsd9_spi_probe, .remove = kxsd9_spi_remove, |