V4L/DVB (13644): v4l: add new v4l2-subdev sensor operations, use g_skip_top_lines in soc-camera

Introduce new v4l2-subdev sensor operations, move .enum_framesizes() and
.enum_frameintervals() methods to it, add a new .g_skip_top_lines() method
and switch soc-camera to use it instead of .y_skip_top soc_camera_device
member, which can now be removed.

Signed-off-by: Guennadi Liakhovetski <g.liakhovetski@gmx.de>
Reviewed-by: Hans Verkuil <hverkuil@xs4all.nl>
Reviewed-by: Sergio Aguirre <saaguirre@ti.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>

1 files changed, 23 insertions, 9 deletions

diff --git a/drivers/media/video/mt9v022.c b/drivers/media/video/mt9v022.c
index 995607f9d3b..b71898f1b08 100644
--- a/drivers/media/video/mt9v022.c
+++ b/drivers/media/video/mt9v022.c
@@ -97,6 +97,7 @@ struct mt9v022 {
         __u32 fourcc;
         int model;      /* V4L2_IDENT_MT9V022* codes from v4l2-chip-ident.h */
         u16 chip_control;
+        unsigned short y_skip_top;      /* Lines to skip at the top */
 };
 
 static struct mt9v022 *to_mt9v022(const struct i2c_client *client)
@@ -265,7 +266,6 @@ static int mt9v022_s_crop(struct v4l2_subdev *sd, struct v4l2_crop *a)
         struct i2c_client *client = sd->priv;
         struct mt9v022 *mt9v022 = to_mt9v022(client);
         struct v4l2_rect rect = a->c;
-        struct soc_camera_device *icd = client->dev.platform_data;
         int ret;
 
         /* Bayer format - even size lengths */
@@ -287,10 +287,10 @@ static int mt9v022_s_crop(struct v4l2_subdev *sd, struct v4l2_crop *a)
         if (ret >= 0) {
                 if (ret & 1) /* Autoexposure */
                         ret = reg_write(client, MT9V022_MAX_TOTAL_SHUTTER_WIDTH,
-                                        rect.height + icd->y_skip_top + 43);
+                                        rect.height + mt9v022->y_skip_top + 43);
                 else
                         ret = reg_write(client, MT9V022_TOTAL_SHUTTER_WIDTH,
-                                        rect.height + icd->y_skip_top + 43);
+                                        rect.height + mt9v022->y_skip_top + 43);
         }
         /* Setup frame format: defaults apart from width and height */
         if (!ret)
@@ -309,7 +309,7 @@ static int mt9v022_s_crop(struct v4l2_subdev *sd, struct v4l2_crop *a)
                 ret = reg_write(client, MT9V022_WINDOW_WIDTH, rect.width);
         if (!ret)
                 ret = reg_write(client, MT9V022_WINDOW_HEIGHT,
-                                rect.height + icd->y_skip_top);
+                                rect.height + mt9v022->y_skip_top);
 
         if (ret < 0)
                 return ret;
@@ -410,15 +410,15 @@ static int mt9v022_s_fmt(struct v4l2_subdev *sd, struct v4l2_format *f)
 static int mt9v022_try_fmt(struct v4l2_subdev *sd, struct v4l2_format *f)
 {
         struct i2c_client *client = sd->priv;
-        struct soc_camera_device *icd = client->dev.platform_data;
+        struct mt9v022 *mt9v022 = to_mt9v022(client);
         struct v4l2_pix_format *pix = &f->fmt.pix;
         int align = pix->pixelformat == V4L2_PIX_FMT_SBGGR8 ||
                 pix->pixelformat == V4L2_PIX_FMT_SBGGR16;
 
         v4l_bound_align_image(&pix->width, MT9V022_MIN_WIDTH,
                 MT9V022_MAX_WIDTH, align,
-                &pix->height, MT9V022_MIN_HEIGHT + icd->y_skip_top,
-                MT9V022_MAX_HEIGHT + icd->y_skip_top, align, 0);
+                &pix->height, MT9V022_MIN_HEIGHT + mt9v022->y_skip_top,
+                MT9V022_MAX_HEIGHT + mt9v022->y_skip_top, align, 0);
 
         return 0;
 }
@@ -787,6 +787,16 @@ static void mt9v022_video_remove(struct soc_camera_device *icd)
                 icl->free_bus(icl);
 }
 
+static int mt9v022_g_skip_top_lines(struct v4l2_subdev *sd, u32 *lines)
+{
+        struct i2c_client *client = sd->priv;
+        struct mt9v022 *mt9v022 = to_mt9v022(client);
+
+        *lines = mt9v022->y_skip_top;
+
+        return 0;
+}
+
 static struct v4l2_subdev_core_ops mt9v022_subdev_core_ops = {
         .g_ctrl         = mt9v022_g_ctrl,
         .s_ctrl         = mt9v022_s_ctrl,
@@ -807,9 +817,14 @@ static struct v4l2_subdev_video_ops mt9v022_subdev_video_ops = {
         .cropcap        = mt9v022_cropcap,
 };
 
+static struct v4l2_subdev_sensor_ops mt9v022_subdev_sensor_ops = {
+        .g_skip_top_lines       = mt9v022_g_skip_top_lines,
+};
+
 static struct v4l2_subdev_ops mt9v022_subdev_ops = {
         .core   = &mt9v022_subdev_core_ops,
         .video  = &mt9v022_subdev_video_ops,
+        .sensor = &mt9v022_subdev_sensor_ops,
 };
 
 static int mt9v022_probe(struct i2c_client *client,
@@ -851,8 +866,7 @@ static int mt9v022_probe(struct i2c_client *client,
          * MT9V022 _really_ corrupts the first read out line.
          * TODO: verify on i.MX31
          */
-        icd->y_skip_top         = 1;
-
+        mt9v022->y_skip_top     = 1;
         mt9v022->rect.left      = MT9V022_COLUMN_SKIP;
         mt9v022->rect.top       = MT9V022_ROW_SKIP;
         mt9v022->rect.width     = MT9V022_MAX_WIDTH;