linux-kernel - [PATCH 1/3] [media] videodev2.h: Add new DV flag CAN_DETECT_REDUCED

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Date:   Tue, 21 Mar 2017 11:49:16 +0000
From:   Jose Abreu <Jose.Abreu@...opsys.com>
To:     linux-media@...r.kernel.org
Cc:     Jose Abreu <Jose.Abreu@...opsys.com>,
        Carlos Palminha <CARLOS.PALMINHA@...opsys.com>,
        Mauro Carvalho Chehab <mchehab@...nel.org>,
        Hans Verkuil <hans.verkuil@...co.com>,
        linux-kernel@...r.kernel.org
Subject: [PATCH 1/3] [media] videodev2.h: Add new DV flag CAN_DETECT_REDUCED_FPS

Add a new flag to UAPI for DV timings which, whenever set,
indicates that hardware can detect the difference between
regular FPS and 1000/1001 FPS.

This is specific to HDMI receivers. Also, it is only valid
when V4L2_DV_FL_CAN_REDUCE_FPS is set.

Signed-off-by: Jose Abreu <joabreu@...opsys.com>
Cc: Carlos Palminha <palminha@...opsys.com>
Cc: Mauro Carvalho Chehab <mchehab@...nel.org>
Cc: Hans Verkuil <hans.verkuil@...co.com>
Cc: linux-media@...r.kernel.org
Cc: linux-kernel@...r.kernel.org
---
 include/uapi/linux/videodev2.h | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/include/uapi/linux/videodev2.h b/include/uapi/linux/videodev2.h
index 45184a2..dd7b426 100644
--- a/include/uapi/linux/videodev2.h
+++ b/include/uapi/linux/videodev2.h
@@ -1371,6 +1371,13 @@ struct v4l2_bt_timings {
  * InfoFrame).
  */
 #define V4L2_DV_FL_HAS_HDMI_VIC			(1 << 8)
+/*
+ * CEA-861 specific: only valid for video receivers.
+ * If set, then HW can detect the difference between regular FPS and
+ * 1000/1001 FPS. Note: This flag is only valid for HDMI VIC codes with
+ * the V4L2_DV_FL_CAN_REDUCE_FPS flag set.
+ */
+#define V4L2_DV_FL_CAN_DETECT_REDUCED_FPS	(1 << 9)
 
 /* A few useful defines to calculate the total blanking and frame sizes */
 #define V4L2_DV_BT_BLANKING_WIDTH(bt) \
-- 
1.9.1