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| author | Sean Nyekjaer <sean@geanix.com> | 2019-09-16 15:56:28 +0200 |
|---|---|---|
| committer | Jonathan Cameron <Jonathan.Cameron@huawei.com> | 2019-10-05 12:36:39 +0100 |
| commit | 4c997dfa692d8bdc9f2906057d17f1c61d5dcda2 (patch) | |
| tree | 89be98454b994b6dec6086a9f70ed298a4fb4d0a | |
| parent | b5969abfa8b8ed43ebd93479d394f664bd4a5a87 (diff) | |
| download | linux-stable-4c997dfa692d8bdc9f2906057d17f1c61d5dcda2.tar.gz linux-stable-4c997dfa692d8bdc9f2906057d17f1c61d5dcda2.tar.bz2 linux-stable-4c997dfa692d8bdc9f2906057d17f1c61d5dcda2.zip | |
iio: imu: st_lsm6dsx: add wakeup-source option
This add ways for the SoC to wake from accelerometer wake events.
In the suspend function we skip disabling the sensor if wakeup-source
and events are activated.
Signed-off-by: Sean Nyekjaer <sean@geanix.com>
Reviewed-by: Lorenzo Bianconi <lorenzo@kernel.org>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
| -rw-r--r-- | drivers/iio/imu/st_lsm6dsx/st_lsm6dsx_core.c | 14 |
1 files changed, 14 insertions, 0 deletions
diff --git a/drivers/iio/imu/st_lsm6dsx/st_lsm6dsx_core.c b/drivers/iio/imu/st_lsm6dsx/st_lsm6dsx_core.c index 806935c8f033..dcac1314e769 100644 --- a/drivers/iio/imu/st_lsm6dsx/st_lsm6dsx_core.c +++ b/drivers/iio/imu/st_lsm6dsx/st_lsm6dsx_core.c @@ -1858,6 +1858,9 @@ int st_lsm6dsx_probe(struct device *dev, int irq, int hw_id, return err; } + if (dev->of_node && of_property_read_bool(dev->of_node, "wakeup-source")) + device_init_wakeup(dev, true); + return 0; } EXPORT_SYMBOL(st_lsm6dsx_probe); @@ -1876,6 +1879,13 @@ static int __maybe_unused st_lsm6dsx_suspend(struct device *dev) if (!(hw->enable_mask & BIT(sensor->id))) continue; + if (device_may_wakeup(dev) && + sensor->id == ST_LSM6DSX_ID_ACC && hw->enable_event) { + /* Enable wake from IRQ */ + enable_irq_wake(hw->irq); + continue; + } + if (sensor->id == ST_LSM6DSX_ID_EXT0 || sensor->id == ST_LSM6DSX_ID_EXT1 || sensor->id == ST_LSM6DSX_ID_EXT2) @@ -1905,6 +1915,10 @@ static int __maybe_unused st_lsm6dsx_resume(struct device *dev) continue; sensor = iio_priv(hw->iio_devs[i]); + if (device_may_wakeup(dev) && + sensor->id == ST_LSM6DSX_ID_ACC && hw->enable_event) + disable_irq_wake(hw->irq); + if (!(hw->suspend_mask & BIT(sensor->id))) continue; |