linux-kernel - [RFC PATCH 2/3] media: v4l2: Add v4l2 control IDs for temperature

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Date:   Tue, 14 Apr 2020 22:01:50 +0200
From:   Daniel Gomez <daniel@...c.com>
To:     mchehab@...nel.org, hverkuil-cisco@...all.nl,
        linux-media@...r.kernel.org
Cc:     linux-kernel@...r.kernel.org, Daniel Gomez <daniel@...c.com>
Subject: [RFC PATCH 2/3] media: v4l2: Add v4l2 control IDs for temperature

Add a v4l2 control ID to handle the temperature.

Signed-off-by: Daniel Gomez <daniel@...c.com>
---
 drivers/media/v4l2-core/v4l2-ctrls.c | 5 +++++
 include/uapi/linux/v4l2-controls.h   | 4 +++-
 2 files changed, 8 insertions(+), 1 deletion(-)

diff --git a/drivers/media/v4l2-core/v4l2-ctrls.c b/drivers/media/v4l2-core/v4l2-ctrls.c
index 93d33d1db4e8..17b93111baa8 100644
--- a/drivers/media/v4l2-core/v4l2-ctrls.c
+++ b/drivers/media/v4l2-core/v4l2-ctrls.c
@@ -783,6 +783,7 @@ const char *v4l2_ctrl_get_name(u32 id)
 	case V4L2_CID_MIN_BUFFERS_FOR_OUTPUT:	return "Min Number of Output Buffers";
 	case V4L2_CID_ALPHA_COMPONENT:		return "Alpha Component";
 	case V4L2_CID_COLORFX_CBCR:		return "Color Effects, CbCr";
+	case V4L2_CID_TEMPERATURE:		return "Temperature";
 
 	/* Codec controls */
 	/* The MPEG controls are applicable to all codec controls
@@ -1344,6 +1345,10 @@ void v4l2_ctrl_fill(u32 id, const char **name, enum v4l2_ctrl_type *type,
 		*type = V4L2_CTRL_TYPE_INTEGER;
 		*flags |= V4L2_CTRL_FLAG_READ_ONLY;
 		break;
+	case V4L2_CID_TEMPERATURE:
+		*type = V4L2_CTRL_TYPE_INTEGER;
+		*flags |= V4L2_CTRL_FLAG_VOLATILE | V4L2_CTRL_FLAG_READ_ONLY;
+		break;
 	case V4L2_CID_MPEG_VIDEO_DEC_PTS:
 		*type = V4L2_CTRL_TYPE_INTEGER64;
 		*flags |= V4L2_CTRL_FLAG_VOLATILE | V4L2_CTRL_FLAG_READ_ONLY;
diff --git a/include/uapi/linux/v4l2-controls.h b/include/uapi/linux/v4l2-controls.h
index 1a58d7cc4ccc..76ec0a6da8d5 100644
--- a/include/uapi/linux/v4l2-controls.h
+++ b/include/uapi/linux/v4l2-controls.h
@@ -143,8 +143,10 @@ enum v4l2_colorfx {
 #define V4L2_CID_ALPHA_COMPONENT		(V4L2_CID_BASE+41)
 #define V4L2_CID_COLORFX_CBCR			(V4L2_CID_BASE+42)
 
+#define V4L2_CID_TEMPERATURE			(V4L2_CID_BASE+43)
+
 /* last CID + 1 */
-#define V4L2_CID_LASTP1                         (V4L2_CID_BASE+43)
+#define V4L2_CID_LASTP1                         (V4L2_CID_BASE+44)
 
 /* USER-class private control IDs */
 
-- 
2.25.1