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media: add V4L2_CID_UNIT_CELL_SIZE control

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This control returns the unit cell size in nanometres. The struct provides
the width and the height in separated fields to take into consideration
asymmetric pixels and/or hardware binning.
This control is required for automatic calibration of sensors/cameras.

Reviewed-by: Philipp Zabel <p.zabel@pengutronix.de>
Signed-off-by: Ricardo Ribalda Delgado <ribalda@kernel.org>
Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl>
Signed-off-by: Mauro Carvalho Chehab <mchehab+samsung@kernel.org>
This commit is contained in:
Ricardo Ribalda Delgado 2019-10-07 12:06:33 -03:00 committed by Mauro Carvalho Chehab
parent 8ae3a08629
commit 61fd036d01
2 changed files with 6 additions and 0 deletions
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5
drivers/media/v4l2-core/v4l2-ctrls.c
View file

@ -996,6 +996,7 @@ const char *v4l2_ctrl_get_name(u32 id)
case V4L2_CID_AUTO_FOCUS_RANGE: return "Auto Focus, Range";
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";
/* FM Radio Modulator controls */
/* Keep the order of the 'case's the same as in v4l2-controls.h! */
@ -1377,6 +1378,10 @@ void v4l2_ctrl_fill(u32 id, const char **name, enum v4l2_ctrl_type *type,
case V4L2_CID_MPEG_VIDEO_VP8_FRAME_HEADER:
*type = V4L2_CTRL_TYPE_VP8_FRAME_HEADER;
break;
case V4L2_CID_UNIT_CELL_SIZE:
*type = V4L2_CTRL_TYPE_AREA;
*flags |= V4L2_CTRL_FLAG_READ_ONLY;
break;
default:
*type = V4L2_CTRL_TYPE_INTEGER;
break;

1
include/uapi/linux/v4l2-controls.h
View file

@ -1034,6 +1034,7 @@ enum v4l2_jpeg_chroma_subsampling {
#define V4L2_CID_TEST_PATTERN_GREENR (V4L2_CID_IMAGE_SOURCE_CLASS_BASE + 5)
#define V4L2_CID_TEST_PATTERN_BLUE (V4L2_CID_IMAGE_SOURCE_CLASS_BASE + 6)
#define V4L2_CID_TEST_PATTERN_GREENB (V4L2_CID_IMAGE_SOURCE_CLASS_BASE + 7)
#define V4L2_CID_UNIT_CELL_SIZE (V4L2_CID_IMAGE_SOURCE_CLASS_BASE + 8)
/* Image processing controls */