[media] smiapp: provide g_skip_top_lines method in sensor ops

Some sensors (like the one in Nokia N900) provide metadata in the first
couple of lines. Make that information information available to the
pipeline.

Use u16 instead, this is a 16-bit value.

Signed-off-by: Ivaylo Dimitrov <ivo.g.dimitrov.75@gmail.com>
Signed-off-by: Sakari Ailus <sakari.ailus@linux.intel.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>

diff --git a/drivers/media/i2c/smiapp/smiapp-core.c b/drivers/media/i2c/smiapp/smiapp-core.c
index a215efe7a8bac0ec3972d41e0b23cd7bffd336d2..3dfe387abf6e6a52188ff5a8dfb3671186ce1e09 100644 (file)
--- a/drivers/media/i2c/smiapp/smiapp-core.c
+++ b/drivers/media/i2c/smiapp/smiapp-core.c
@@ -188,6 +188,8 @@ static int smiapp_read_frame_fmt(struct smiapp_sensor *sensor)
                embedded_end = 0;
        }
 
+       sensor->image_start = image_start;
+
        dev_dbg(&client->dev, "embedded data from lines %d to %d\n",
                embedded_start, embedded_end);
        dev_dbg(&client->dev, "image data starts at line %d\n", image_start);
@@ -2280,6 +2282,15 @@ static int smiapp_get_skip_frames(struct v4l2_subdev *subdev, u32 *frames)
        return 0;
 }
 
+static int smiapp_get_skip_top_lines(struct v4l2_subdev *subdev, u32 *lines)
+{
+       struct smiapp_sensor *sensor = to_smiapp_sensor(subdev);
+
+       *lines = sensor->image_start;
+
+       return 0;
+}
+
 /* -----------------------------------------------------------------------------
  * sysfs attributes
  */
@@ -2890,6 +2901,7 @@ static const struct v4l2_subdev_pad_ops smiapp_pad_ops = {
 
 static const struct v4l2_subdev_sensor_ops smiapp_sensor_ops = {
        .g_skip_frames = smiapp_get_skip_frames,
+       .g_skip_top_lines = smiapp_get_skip_top_lines,
 };
 
 static const struct v4l2_subdev_ops smiapp_ops = {

diff --git a/drivers/media/i2c/smiapp/smiapp.h b/drivers/media/i2c/smiapp/smiapp.h
index f6af0cc4a256fc0f83d3771e560ee0b6cd148dbd..2174f89a00db494dea4c58cef7ea2fce6c6b730f 100644 (file)
--- a/drivers/media/i2c/smiapp/smiapp.h
+++ b/drivers/media/i2c/smiapp/smiapp.h
@@ -217,6 +217,7 @@ struct smiapp_sensor {
 
        u8 hvflip_inv_mask; /* H/VFLIP inversion due to sensor orientation */
        u8 frame_skip;
+       u16 image_start;        /* Offset to first line after metadata lines */
 
        int power_count;