From: Hans Verkuil <hans.verkuil@xxxxxxxxx>
HDMI and DisplayPort both support IT Content Type information that
tells the receiver what type of material the video is, graphics such
as from a PC desktop, Photo, Cinema or Game (low-latency).
This patch adds controls for receivers and transmitters to get/set
this information.
Signed-off-by: Hans Verkuil <hans.verkuil@xxxxxxxxx>
---
drivers/media/v4l2-core/v4l2-ctrls.c | 16 ++++++++++++++++
include/uapi/linux/v4l2-controls.h | 10 ++++++++++
2 files changed, 26 insertions(+)
diff --git a/drivers/media/v4l2-core/v4l2-ctrls.c b/drivers/media/v4l2-core/v4l2-ctrls.c
index c9d5537..bed04b1 100644
--- a/drivers/media/v4l2-core/v4l2-ctrls.c
+++ b/drivers/media/v4l2-core/v4l2-ctrls.c
@@ -462,6 +462,14 @@ const char * const *v4l2_ctrl_get_menu(u32 id)
"RGB full range (0-255)",
NULL,
};
+ static const char * const dv_it_content_type[] = {
+ "Graphics",
+ "Photo",
+ "Cinema",
+ "Game",
+ "No IT Content",
+ NULL,
+ };
static const char * const detect_md_mode[] = {
"Disabled",
"Global",
@@ -560,6 +568,9 @@ const char * const *v4l2_ctrl_get_menu(u32 id)
case V4L2_CID_DV_TX_RGB_RANGE:
case V4L2_CID_DV_RX_RGB_RANGE:
return dv_rgb_range;
+ case V4L2_CID_DV_TX_IT_CONTENT_TYPE:
+ case V4L2_CID_DV_RX_IT_CONTENT_TYPE:
+ return dv_it_content_type;
case V4L2_CID_DETECT_MD_MODE:
return detect_md_mode;
@@ -881,8 +892,10 @@ const char *v4l2_ctrl_get_name(u32 id)
case V4L2_CID_DV_TX_EDID_PRESENT: return "EDID Present";
case V4L2_CID_DV_TX_MODE: return "Transmit Mode";
case V4L2_CID_DV_TX_RGB_RANGE: return "Tx RGB Quantization Range";
+ case V4L2_CID_DV_TX_IT_CONTENT_TYPE: return "Tx IT Content Type";
case V4L2_CID_DV_RX_POWER_PRESENT: return "Power Present";
case V4L2_CID_DV_RX_RGB_RANGE: return "Rx RGB Quantization Range";
+ case V4L2_CID_DV_RX_IT_CONTENT_TYPE: return "Rx IT Content Type";
case V4L2_CID_FM_RX_CLASS: return "FM Radio Receiver Controls";
case V4L2_CID_TUNE_DEEMPHASIS: return "De-Emphasis";
@@ -1038,7 +1051,9 @@ void v4l2_ctrl_fill(u32 id, const char **name, enum v4l2_ctrl_type *type,
case V4L2_CID_SCENE_MODE:
case V4L2_CID_DV_TX_MODE:
case V4L2_CID_DV_TX_RGB_RANGE:
+ case V4L2_CID_DV_TX_IT_CONTENT_TYPE:
case V4L2_CID_DV_RX_RGB_RANGE:
+ case V4L2_CID_DV_RX_IT_CONTENT_TYPE:
case V4L2_CID_TEST_PATTERN:
case V4L2_CID_TUNE_DEEMPHASIS:
case V4L2_CID_MPEG_VIDEO_VPX_GOLDEN_FRAME_SEL:
@@ -1185,6 +1200,7 @@ void v4l2_ctrl_fill(u32 id, const char **name, enum v4l2_ctrl_type *type,
case V4L2_CID_DV_TX_RXSENSE:
case V4L2_CID_DV_TX_EDID_PRESENT:
case V4L2_CID_DV_RX_POWER_PRESENT:
+ case V4L2_CID_DV_RX_IT_CONTENT_TYPE:
case V4L2_CID_RDS_RX_PTY:
case V4L2_CID_RDS_RX_PS_NAME:
case V4L2_CID_RDS_RX_RADIO_TEXT:
diff --git a/include/uapi/linux/v4l2-controls.h b/include/uapi/linux/v4l2-controls.h
index 2d225bc..2ae5c3e 100644
--- a/include/uapi/linux/v4l2-controls.h
+++ b/include/uapi/linux/v4l2-controls.h
@@ -912,8 +912,18 @@ enum v4l2_dv_rgb_range {
V4L2_DV_RGB_RANGE_FULL = 2,
};
+#define V4L2_CID_DV_TX_IT_CONTENT_TYPE (V4L2_CID_DV_CLASS_BASE + 6)
+enum v4l2_dv_it_content_type {
+ V4L2_DV_IT_CONTENT_TYPE_GRAPHICS = 0,
+ V4L2_DV_IT_CONTENT_TYPE_PHOTO = 1,
+ V4L2_DV_IT_CONTENT_TYPE_CINEMA = 2,
+ V4L2_DV_IT_CONTENT_TYPE_GAME = 3,
+ V4L2_DV_IT_CONTENT_TYPE_NO_ITC = 4,
+};
+
#define V4L2_CID_DV_RX_POWER_PRESENT (V4L2_CID_DV_CLASS_BASE + 100)
#define V4L2_CID_DV_RX_RGB_RANGE (V4L2_CID_DV_CLASS_BASE + 101)
+#define V4L2_CID_DV_RX_IT_CONTENT_TYPE (V4L2_CID_DV_CLASS_BASE + 102)
#define V4L2_CID_FM_RX_CLASS_BASE (V4L2_CTRL_CLASS_FM_RX | 0x900)
#define V4L2_CID_FM_RX_CLASS (V4L2_CTRL_CLASS_FM_RX | 1)
--
2.7.0.rc3
--
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