diff options
| author | Linus Walleij <linus.walleij@linaro.org> | 2016-06-29 14:08:34 +0200 |
|---|---|---|
| committer | Jonathan Cameron <jic23@kernel.org> | 2016-06-30 21:39:51 +0200 |
| commit | b21d3f3452ec3a060c8f576a97adfdd4329b3157 (patch) | |
| tree | b049c5869c3ee67158a0a360d0b149c22d7c1cec /drivers/iio/magnetometer | |
| parent | iio: magn: ak8975: fix regulator usage (diff) | |
| download | linux-b21d3f3452ec3a060c8f576a97adfdd4329b3157.tar.xz linux-b21d3f3452ec3a060c8f576a97adfdd4329b3157.zip | |
iio: magn: ak8975: add Vid regulator
The AK8975 has two power sources: Vdd (analog voltage supply)
and Vid (digital voltage supply). Optionally also obtain the Vid
supply regulator and enable it.
If an error occurs when enabling one of the regulators: bail out.
Cc: Gregor Boirie <gregor.boirie@parrot.com>
Cc: Richard Leitner <dev@g0hl1n.net>
Cc: Krzysztof Kozlowski <k.kozlowski@samsung.com>
Cc: Lars-Peter Clausen <lars@metafoo.de>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
Diffstat (limited to 'drivers/iio/magnetometer')
| -rw-r--r-- | drivers/iio/magnetometer/ak8975.c | 15 |
1 files changed, 15 insertions, 0 deletions
diff --git a/drivers/iio/magnetometer/ak8975.c b/drivers/iio/magnetometer/ak8975.c index def693cf7c7a..ca69f8da4eef 100644 --- a/drivers/iio/magnetometer/ak8975.c +++ b/drivers/iio/magnetometer/ak8975.c @@ -379,6 +379,7 @@ struct ak8975_data { u8 cntl_cache; struct iio_mount_matrix orientation; struct regulator *vdd; + struct regulator *vid; }; /* Enable attached power regulator if any. */ @@ -399,6 +400,19 @@ static int ak8975_power_on(struct i2c_client *client) "Failed to enable specified Vdd supply\n"); return ret; } + + data->vid = devm_regulator_get(&client->dev, "vid"); + if (IS_ERR(data->vid)) { + ret = PTR_ERR(data->vid); + } else { + ret = regulator_enable(data->vid); + } + if (ret) { + dev_warn(&client->dev, + "Failed to enable specified Vid supply\n"); + return ret; + } + return 0; } /* Disable attached power regulator if any. */ @@ -407,6 +421,7 @@ static void ak8975_power_off(const struct i2c_client *client) const struct iio_dev *indio_dev = i2c_get_clientdata(client); const struct ak8975_data *data = iio_priv(indio_dev); + regulator_disable(data->vid); regulator_disable(data->vdd); } |