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media: v4l2-ctrls: Add camera orientation and rotation 

Add support for the newly defined V4L2_CID_CAMERA_ORIENTATION
and V4L2_CID_CAMERA_SENSOR_ROTATION read-only controls used to report
the camera device mounting position and orientation respectively.

Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Signed-off-by: Jacopo Mondi <jacopo@jmondi.org>
Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl>
Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
This commit is contained in:
Jacopo Mondi 2020-05-09 11:04:48 +02:00 committed by Mauro Carvalho Chehab
parent 9926c22487
commit 926645d43f
2 changed files with 20 additions and 0 deletions
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13
drivers/media/v4l2-core/v4l2-ctrls.c
View File

@ -583,6 +583,12 @@ const char * const *v4l2_ctrl_get_menu(u32 id)
"Annex B Start Code",
NULL,
};
static const char * const camera_orientation[] = {
"Front",
"Back",
"External",
NULL,
};
switch (id) {
case V4L2_CID_MPEG_AUDIO_SAMPLING_FREQ:
@ -708,6 +714,8 @@ const char * const *v4l2_ctrl_get_menu(u32 id)
return hevc_decode_mode;
case V4L2_CID_MPEG_VIDEO_HEVC_START_CODE:
return hevc_start_code;
case V4L2_CID_CAMERA_ORIENTATION:
return camera_orientation;
default:
return NULL;
}
@ -1020,6 +1028,8 @@ const char *v4l2_ctrl_get_name(u32 id)
case V4L2_CID_PAN_SPEED: return "Pan, Speed";
case V4L2_CID_TILT_SPEED: return "Tilt, Speed";
case V4L2_CID_UNIT_CELL_SIZE: return "Unit Cell Size";
case V4L2_CID_CAMERA_ORIENTATION: return "Camera Orientation";
case V4L2_CID_CAMERA_SENSOR_ROTATION: return "Camera Sensor Rotation";
/* FM Radio Modulator controls */
/* Keep the order of the 'case's the same as in v4l2-controls.h! */
@ -1293,6 +1303,7 @@ void v4l2_ctrl_fill(u32 id, const char **name, enum v4l2_ctrl_type *type,
case V4L2_CID_MPEG_VIDEO_HEVC_LOOP_FILTER_MODE:
case V4L2_CID_MPEG_VIDEO_HEVC_DECODE_MODE:
case V4L2_CID_MPEG_VIDEO_HEVC_START_CODE:
case V4L2_CID_CAMERA_ORIENTATION:
*type = V4L2_CTRL_TYPE_MENU;
break;
case V4L2_CID_LINK_FREQ:
@ -1482,6 +1493,8 @@ void v4l2_ctrl_fill(u32 id, const char **name, enum v4l2_ctrl_type *type,
case V4L2_CID_RDS_RX_TRAFFIC_ANNOUNCEMENT:
case V4L2_CID_RDS_RX_TRAFFIC_PROGRAM:
case V4L2_CID_RDS_RX_MUSIC_SPEECH:
case V4L2_CID_CAMERA_ORIENTATION:
case V4L2_CID_CAMERA_SENSOR_ROTATION:
*flags |= V4L2_CTRL_FLAG_READ_ONLY;
break;
case V4L2_CID_RF_TUNER_PLL_LOCK:

7
include/uapi/linux/v4l2-controls.h
View File

@ -923,6 +923,13 @@ enum v4l2_auto_focus_range {
#define V4L2_CID_PAN_SPEED (V4L2_CID_CAMERA_CLASS_BASE+32)
#define V4L2_CID_TILT_SPEED (V4L2_CID_CAMERA_CLASS_BASE+33)
#define V4L2_CID_CAMERA_ORIENTATION (V4L2_CID_CAMERA_CLASS_BASE+34)
#define V4L2_CAMERA_ORIENTATION_FRONT 0
#define V4L2_CAMERA_ORIENTATION_BACK 1
#define V4L2_CAMERA_ORIENTATION_EXTERNAL 2
#define V4L2_CID_CAMERA_SENSOR_ROTATION (V4L2_CID_CAMERA_CLASS_BASE+35)
/* FM Modulator class control IDs */
#define V4L2_CID_FM_TX_CLASS_BASE (V4L2_CTRL_CLASS_FM_TX | 0x900)