target/linux/bcm27xx/patches-5.4/950-0318-v4l2-Add-a-Greyworld-AWB-mode.patch

   1 From 1b14387d6b699c4cfc8218867997b1508a67167a Mon Sep 17 00:00:00 2001
   2 From: Dave Stevenson <dave.stevenson@raspberrypi.org>
   3 Date: Fri, 6 Sep 2019 15:04:51 +0100
   4 Subject: [PATCH] v4l2: Add a Greyworld AWB mode.
   5
   6 Adds a simple greyworld white balance preset, mainly for use
   7 with cameras without an IR filter (eg Raspberry Pi NoIR)
   8
   9 Signed-off-by: Dave Stevenson <dave.stevenson@raspberrypi.org>
  10 ---
  11  drivers/media/v4l2-core/v4l2-ctrls.c | 1 +
  12  include/uapi/linux/v4l2-controls.h   | 1 +
  13  2 files changed, 2 insertions(+)
  14
  15 --- a/drivers/media/v4l2-core/v4l2-ctrls.c
  16 +++ b/drivers/media/v4l2-core/v4l2-ctrls.c
  17 @@ -271,6 +271,7 @@ const char * const *v4l2_ctrl_get_menu(u
  18                 "Flash",
  19                 "Cloudy",
  20                 "Shade",
  21 +               "Greyworld",
  22                 NULL,
  23         };
  24         static const char * const camera_iso_sensitivity_auto[] = {
  25 --- a/include/uapi/linux/v4l2-controls.h
  26 +++ b/include/uapi/linux/v4l2-controls.h
  27 @@ -850,6 +850,7 @@ enum v4l2_auto_n_preset_white_balance {
  28         V4L2_WHITE_BALANCE_FLASH                = 7,
  29         V4L2_WHITE_BALANCE_CLOUDY               = 8,
  30         V4L2_WHITE_BALANCE_SHADE                = 9,
  31 +       V4L2_WHITE_BALANCE_GREYWORLD            = 10,
  32  };
  33
  34  #define V4L2_CID_WIDE_DYNAMIC_RANGE            (V4L2_CID_CAMERA_CLASS_BASE+21)