diff options
Diffstat (limited to 'drivers/media/i2c')
| -rw-r--r-- | drivers/media/i2c/mt9p031.c | 24 |
1 files changed, 24 insertions, 0 deletions
diff --git a/drivers/media/i2c/mt9p031.c b/drivers/media/i2c/mt9p031.c index e0bad594c8da..ecf4492c6b8e 100644 --- a/drivers/media/i2c/mt9p031.c +++ b/drivers/media/i2c/mt9p031.c @@ -19,6 +19,7 @@ #include <linux/i2c.h> #include <linux/log2.h> #include <linux/pm.h> +#include <linux/regulator/consumer.h> #include <linux/slab.h> #include <linux/videodev2.h> @@ -121,6 +122,10 @@ struct mt9p031 { struct mutex power_lock; /* lock to protect power_count */ int power_count; + struct regulator *vaa; + struct regulator *vdd; + struct regulator *vdd_io; + enum mt9p031_model model; struct aptina_pll pll; int reset; @@ -264,6 +269,11 @@ static int mt9p031_power_on(struct mt9p031 *mt9p031) usleep_range(1000, 2000); } + /* Bring up the supplies */ + regulator_enable(mt9p031->vdd); + regulator_enable(mt9p031->vdd_io); + regulator_enable(mt9p031->vaa); + /* Emable clock */ if (mt9p031->pdata->set_xclk) mt9p031->pdata->set_xclk(&mt9p031->subdev, @@ -285,6 +295,10 @@ static void mt9p031_power_off(struct mt9p031 *mt9p031) usleep_range(1000, 2000); } + regulator_disable(mt9p031->vaa); + regulator_disable(mt9p031->vdd_io); + regulator_disable(mt9p031->vdd); + if (mt9p031->pdata->set_xclk) mt9p031->pdata->set_xclk(&mt9p031->subdev, 0); } @@ -937,6 +951,16 @@ static int mt9p031_probe(struct i2c_client *client, mt9p031->model = did->driver_data; mt9p031->reset = -1; + mt9p031->vaa = devm_regulator_get(&client->dev, "vaa"); + mt9p031->vdd = devm_regulator_get(&client->dev, "vdd"); + mt9p031->vdd_io = devm_regulator_get(&client->dev, "vdd_io"); + + if (IS_ERR(mt9p031->vaa) || IS_ERR(mt9p031->vdd) || + IS_ERR(mt9p031->vdd_io)) { + dev_err(&client->dev, "Unable to get regulators\n"); + return -ENODEV; + } + v4l2_ctrl_handler_init(&mt9p031->ctrls, ARRAY_SIZE(mt9p031_ctrls) + 6); v4l2_ctrl_new_std(&mt9p031->ctrls, &mt9p031_ctrl_ops, |