mirror of
https://github.com/openwrt/openwrt.git
synced 2024-12-27 17:18:59 +00:00
20ea6adbf1
Build system: x86_64 Build-tested: bcm2708, bcm2709, bcm2710, bcm2711 Run-tested: bcm2708/RPiB+, bcm2709/RPi3B, bcm2710/RPi3B, bcm2711/RPi4B Signed-off-by: Marty Jones <mj8263788@gmail.com> Signed-off-by: Álvaro Fernández Rojas <noltari@gmail.com>
52 lines
2.4 KiB
Diff
52 lines
2.4 KiB
Diff
From fa9c40c42f2db87e80ac4a89df6a5ecab1b98031 Mon Sep 17 00:00:00 2001
|
|
From: David Plowman <david.plowman@raspberrypi.com>
|
|
Date: Mon, 16 Aug 2021 13:39:08 +0200
|
|
Subject: [PATCH] media: v4l2-ctrls: Add V4L2_CID_NOTIFY_GAINS control
|
|
|
|
commit a9c80593ff80ddb7c6496624e5384e1ea3460a72 upstream.
|
|
|
|
We add a new control V4L2_CID_NOTIFY_GAINS which allows the sensor to
|
|
be notified what gains will be applied to the different colour
|
|
channels by subsequent processing (such as by an ISP), even though the
|
|
sensor will not apply any of these gains itself.
|
|
|
|
For Bayer sensors this will be an array control taking 4 values which
|
|
are the 4 gains arranged in the fixed order B, Gb, Gr and R,
|
|
irrespective of the exact Bayer order of the sensor itself. The use of
|
|
an array makes it straightforward to extend this control to non-Bayer
|
|
sensors (for example, sensors with an RGBW pattern) in future.
|
|
|
|
The units are in all cases linear with the default value indicating a
|
|
gain of exactly 1.0. For example, if the default value were reported as
|
|
128 then the value 192 would represent a gain of exactly 1.5.
|
|
|
|
Signed-off-by: David Plowman <david.plowman@raspberrypi.com>
|
|
Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
|
|
Signed-off-by: Sakari Ailus <sakari.ailus@linux.intel.com>
|
|
Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
|
|
---
|
|
drivers/media/v4l2-core/v4l2-ctrls-defs.c | 1 +
|
|
include/uapi/linux/v4l2-controls.h | 1 +
|
|
2 files changed, 2 insertions(+)
|
|
|
|
--- a/drivers/media/v4l2-core/v4l2-ctrls-defs.c
|
|
+++ b/drivers/media/v4l2-core/v4l2-ctrls-defs.c
|
|
@@ -1109,6 +1109,7 @@ const char *v4l2_ctrl_get_name(u32 id)
|
|
case V4L2_CID_TEST_PATTERN_GREENR: return "Green (Red) Pixel Value";
|
|
case V4L2_CID_TEST_PATTERN_BLUE: return "Blue Pixel Value";
|
|
case V4L2_CID_TEST_PATTERN_GREENB: return "Green (Blue) Pixel Value";
|
|
+ case V4L2_CID_NOTIFY_GAINS: return "Notify Gains";
|
|
|
|
/* Image processing controls */
|
|
/* Keep the order of the 'case's the same as in v4l2-controls.h! */
|
|
--- a/include/uapi/linux/v4l2-controls.h
|
|
+++ b/include/uapi/linux/v4l2-controls.h
|
|
@@ -1123,6 +1123,7 @@ enum v4l2_jpeg_chroma_subsampling {
|
|
#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)
|
|
+#define V4L2_CID_NOTIFY_GAINS (V4L2_CID_IMAGE_SOURCE_CLASS_BASE + 9)
|
|
|
|
|
|
/* Image processing controls */
|