diff options
| author |   Grégor Boirie <gregor.boirie@parrot.com> | 2016-02-17 18:52:51 +0100 |
|---|---|---|
| committer |   Jonathan Cameron <jic23@kernel.org> | 2016-02-24 20:40:47 +0000 |
| commit | 3145229f91916723b07c098c0d88b7d01db6c316 (patch) | |
| tree | 981c2f175e5b6a7e1b9335b827cf1836bf29730f /drivers/iio/pressure/ms5611_core.c | |
| parent | iio:pressure:ms5611: use probed device name (diff) | |
| download | linux-dev-3145229f91916723b07c098c0d88b7d01db6c316.tar.xz linux-dev-3145229f91916723b07c098c0d88b7d01db6c316.zip | |
iio:pressure:ms5611: power regulator support
Add support for an optional regulator which, if found into device-tree,
will power on device at probing time.
The regulator is declared into ms5611 DTS entry as a "vdd-supply" property.
Signed-off-by: Gregor Boirie <gregor.boirie@parrot.com>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
Diffstat (limited to 'drivers/iio/pressure/ms5611_core.c')
| -rw-r--r-- | drivers/iio/pressure/ms5611_core.c | 13 |
1 files changed, 13 insertions, 0 deletions
diff --git a/drivers/iio/pressure/ms5611_core.c b/drivers/iio/pressure/ms5611_core.c index acd8e37195bc..992ad8d3b67a 100644 --- a/drivers/iio/pressure/ms5611_core.c +++ b/drivers/iio/pressure/ms5611_core.c @@ -16,6 +16,7 @@ #include <linux/module.h> #include <linux/iio/iio.h> #include <linux/delay.h> +#include <linux/regulator/consumer.h> #include <linux/iio/buffer.h> #include <linux/iio/triggered_buffer.h> @@ -290,6 +291,18 @@ static const struct iio_info ms5611_info = { static int ms5611_init(struct iio_dev *indio_dev) { int ret; + struct regulator *vdd = devm_regulator_get(indio_dev->dev.parent, + "vdd"); + + /* Enable attached regulator if any. */ + if (!IS_ERR(vdd)) { + ret = regulator_enable(vdd); + if (ret) { + dev_err(indio_dev->dev.parent, + "failed to enable Vdd supply: %d\n", ret); + return ret; + } + } ret = ms5611_reset(indio_dev); if (ret < 0) |