diff options
| author | Daniel Baluta <daniel.baluta@intel.com> | 2014-12-03 15:31:51 +0200 |
|---|---|---|
| committer | Jonathan Cameron <jic23@kernel.org> | 2014-12-12 13:45:14 +0000 |
| commit | 3b9c40e604ee61e69a8aff6e1a426a6250ff4361 (patch) | |
| tree | 1d7eabf139797a6e9918ddc38a8b497494d4a163 /drivers/iio | |
| parent | aff8609addd00efa3d907f3523823693f95686fd (diff) | |
| download | linux-3b9c40e604ee61e69a8aff6e1a426a6250ff4361.tar.bz2 | |
iio: imu: kmx61: Add PM sleep support
Per sensor state (ACTIVE/STANDBY) is saved in driver's
private data (acc_stby/mag_stby) and restored when
resume is called.
Signed-off-by: Daniel Baluta <daniel.baluta@intel.com>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
Diffstat (limited to 'drivers/iio')
| -rw-r--r-- | drivers/iio/imu/kmx61.c | 29 |
1 files changed, 29 insertions, 0 deletions
diff --git a/drivers/iio/imu/kmx61.c b/drivers/iio/imu/kmx61.c index f3007dd664fc..98d58e1b6c6b 100644 --- a/drivers/iio/imu/kmx61.c +++ b/drivers/iio/imu/kmx61.c @@ -16,6 +16,7 @@ #include <linux/acpi.h> #include <linux/gpio/consumer.h> #include <linux/interrupt.h> +#include <linux/pm.h> #include <linux/pm_runtime.h> #include <linux/iio/iio.h> #include <linux/iio/sysfs.h> @@ -796,6 +797,33 @@ static int kmx61_remove(struct i2c_client *client) return 0; } +#ifdef CONFIG_PM_SLEEP +static int kmx61_suspend(struct device *dev) +{ + int ret; + struct kmx61_data *data = i2c_get_clientdata(to_i2c_client(dev)); + + mutex_lock(&data->lock); + ret = kmx61_set_mode(data, KMX61_ALL_STBY, KMX61_ACC | KMX61_MAG, + false); + mutex_unlock(&data->lock); + + return ret; +} + +static int kmx61_resume(struct device *dev) +{ + u8 stby = 0; + struct kmx61_data *data = i2c_get_clientdata(to_i2c_client(dev)); + + if (data->acc_stby) + stby |= KMX61_ACC_STBY_BIT; + if (data->mag_stby) + stby |= KMX61_MAG_STBY_BIT; + + return kmx61_set_mode(data, stby, KMX61_ACC | KMX61_MAG, true); +} +#endif #ifdef CONFIG_PM_RUNTIME static int kmx61_runtime_suspend(struct device *dev) @@ -825,6 +853,7 @@ static int kmx61_runtime_resume(struct device *dev) #endif static const struct dev_pm_ops kmx61_pm_ops = { + SET_SYSTEM_SLEEP_PM_OPS(kmx61_suspend, kmx61_resume) SET_RUNTIME_PM_OPS(kmx61_runtime_suspend, kmx61_runtime_resume, NULL) }; |