[media] adv7604: add support to for the content type control

This receiver now supports reading the IT content type of the incoming
video.

Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>

diff --git a/drivers/media/i2c/adv7604.c b/drivers/media/i2c/adv7604.c
index e427cacde5271aa3c61dfd3fdf7c8c2fc5de7320..d35e0ba8b2698cebd6f01b6660b2d0a3ec1fabca 100644 (file)
--- a/drivers/media/i2c/adv7604.c
+++ b/drivers/media/i2c/adv7604.c
@@ -1197,6 +1197,20 @@ static int adv76xx_s_ctrl(struct v4l2_ctrl *ctrl)
        return -EINVAL;
 }
 
+static int adv76xx_g_volatile_ctrl(struct v4l2_ctrl *ctrl)
+{
+       struct v4l2_subdev *sd =
+               &container_of(ctrl->handler, struct adv76xx_state, hdl)->sd;
+
+       if (ctrl->id == V4L2_CID_DV_RX_IT_CONTENT_TYPE) {
+               ctrl->val = V4L2_DV_IT_CONTENT_TYPE_NO_ITC;
+               if ((io_read(sd, 0x60) & 1) && (infoframe_read(sd, 0x03) & 0x80))
+                       ctrl->val = (infoframe_read(sd, 0x05) >> 4) & 3;
+               return 0;
+       }
+       return -EINVAL;
+}
+
 /* ----------------------------------------------------------------------- */
 
 static inline bool no_power(struct v4l2_subdev *sd)
@@ -2353,6 +2367,7 @@ static int adv76xx_subscribe_event(struct v4l2_subdev *sd,
 
 static const struct v4l2_ctrl_ops adv76xx_ctrl_ops = {
        .s_ctrl = adv76xx_s_ctrl,
+       .g_volatile_ctrl = adv76xx_g_volatile_ctrl,
 };
 
 static const struct v4l2_subdev_core_ops adv76xx_core_ops = {
@@ -2988,6 +3003,7 @@ static int adv76xx_probe(struct i2c_client *client,
                V4L2_DV_BT_CEA_640X480P59_94;
        struct adv76xx_state *state;
        struct v4l2_ctrl_handler *hdl;
+       struct v4l2_ctrl *ctrl;
        struct v4l2_subdev *sd;
        unsigned int i;
        unsigned int val, val2;
@@ -3119,6 +3135,11 @@ static int adv76xx_probe(struct i2c_client *client,
                        V4L2_CID_SATURATION, 0, 255, 1, 128);
        v4l2_ctrl_new_std(hdl, &adv76xx_ctrl_ops,
                        V4L2_CID_HUE, 0, 128, 1, 0);
+       ctrl = v4l2_ctrl_new_std_menu(hdl, &adv76xx_ctrl_ops,
+                       V4L2_CID_DV_RX_IT_CONTENT_TYPE, V4L2_DV_IT_CONTENT_TYPE_NO_ITC,
+                       0, V4L2_DV_IT_CONTENT_TYPE_NO_ITC);
+       if (ctrl)
+               ctrl->flags |= V4L2_CTRL_FLAG_VOLATILE;
 
        /* private controls */
        state->detect_tx_5v_ctrl = v4l2_ctrl_new_std(hdl, NULL,