diff options
| author | Rajat Khandelwal <rajat.khandelwal@linux.intel.com> | 2022-10-10 23:07:20 +0530 |
|---|---|---|
| committer | Jonathan Cameron <Jonathan.Cameron@huawei.com> | 2022-11-23 19:44:00 +0000 |
| commit | 0c3a333524a3e5ba4b6c7b2638faef8420cfdb2a (patch) | |
| tree | 7b11a0f8142da445ce05a9095cb59fc245519ea5 /drivers/iio/pressure/mpl115.h | |
| parent | 16afe125b53f88b855d2713c8ba253d905dcf3cc (diff) | |
iio: pressure: mpl115: Implementing low power mode by shutdown gpio
MPL115 supports shutdown gpio which can be used to set the state
to low power mode. Power from all internal circuits and
registers is removed. This is done by pulling the SHDN pin to low.
This patch enables runtime PM on MPL115 to increase power savings.
According to spec., a wakeup time period of ~5 ms exists between
waking up and actually communicating with the device. This is
implemented using sleep delay.
Signed-off-by: Rajat Khandelwal <rajat.khandelwal@linux.intel.com>
Link: https://lore.kernel.org/r/20221010173720.568916-1-rajat.khandelwal@linux.intel.com
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Diffstat (limited to 'drivers/iio/pressure/mpl115.h')
| -rw-r--r-- | drivers/iio/pressure/mpl115.h | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/drivers/iio/pressure/mpl115.h b/drivers/iio/pressure/mpl115.h index 57d55eb8e661..78a0068a17bb 100644 --- a/drivers/iio/pressure/mpl115.h +++ b/drivers/iio/pressure/mpl115.h @@ -6,6 +6,8 @@ * Copyright (c) 2016 Akinobu Mita <akinobu.mita@gmail.com> */ +#include <linux/pm_runtime.h> + #ifndef _MPL115_H_ #define _MPL115_H_ @@ -18,4 +20,7 @@ struct mpl115_ops { int mpl115_probe(struct device *dev, const char *name, const struct mpl115_ops *ops); +/*PM ops */ +extern const struct dev_pm_ops mpl115_dev_pm_ops; + #endif |