[media] mt9m032: Implement V4L2_CID_PIXEL_RATE control

The pixel rate control is required by the OMAP3 ISP driver and should be
implemented by all media controller-compatible sensor drivers.

Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Signed-off-by: Sakari Ailus <sakari.ailus@iki.fi>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>

1 files changed, 11 insertions, 2 deletions

diff --git a/drivers/media/video/mt9m032.c b/drivers/media/video/mt9m032.c
index 3c1e626139b7..445359c96113 100644
--- a/drivers/media/video/mt9m032.c
+++ b/drivers/media/video/mt9m032.c
@@ -688,11 +688,17 @@ static const struct v4l2_subdev_ops mt9m032_ops = {
 static int mt9m032_probe(struct i2c_client *client,
                          const struct i2c_device_id *devid)
 {
+        struct mt9m032_platform_data *pdata = client->dev.platform_data;
         struct i2c_adapter *adapter = client->adapter;
         struct mt9m032 *sensor;
         int chip_version;
         int ret;
 
+        if (pdata == NULL) {
+                dev_err(&client->dev, "No platform data\n");
+                return -EINVAL;
+        }
+
         if (!i2c_check_functionality(adapter, I2C_FUNC_SMBUS_WORD_DATA)) {
                 dev_warn(&client->dev,
                          "I2C-Adapter doesn't support I2C_FUNC_SMBUS_WORD\n");
@@ -708,7 +714,7 @@ static int mt9m032_probe(struct i2c_client *client,
 
         mutex_init(&sensor->lock);
 
-        sensor->pdata = client->dev.platform_data;
+        sensor->pdata = pdata;
 
         v4l2_i2c_subdev_init(&sensor->subdev, client, &mt9m032_ops);
         sensor->subdev.flags |= V4L2_SUBDEV_FL_HAS_DEVNODE;
@@ -738,7 +744,7 @@ static int mt9m032_probe(struct i2c_client *client,
         sensor->format.field = V4L2_FIELD_NONE;
         sensor->format.colorspace = V4L2_COLORSPACE_SRGB;
 
-        v4l2_ctrl_handler_init(&sensor->ctrls, 4);
+        v4l2_ctrl_handler_init(&sensor->ctrls, 5);
 
         v4l2_ctrl_new_std(&sensor->ctrls, &mt9m032_ctrl_ops,
                           V4L2_CID_GAIN, 0, 127, 1, 64);
@@ -754,6 +760,9 @@ static int mt9m032_probe(struct i2c_client *client,
                           V4L2_CID_EXPOSURE, MT9M032_SHUTTER_WIDTH_MIN,
                           MT9M032_SHUTTER_WIDTH_MAX, 1,
                           MT9M032_SHUTTER_WIDTH_DEF);
+        v4l2_ctrl_new_std(&sensor->ctrls, &mt9m032_ctrl_ops,
+                          V4L2_CID_PIXEL_RATE, pdata->pix_clock,
+                          pdata->pix_clock, 1, pdata->pix_clock);
 
         if (sensor->ctrls.error) {
                 ret = sensor->ctrls.error;