target/linux/bcm27xx/patches-5.15/950-0338-media-i2c-imx290-Replace-V4L2_CID_GAIN-with-V4L2_CID.patch

   1 From 8999614346ab0bbbd9ddd0798222edef7bce6b47 Mon Sep 17 00:00:00 2001
   2 From: David Plowman <david.plowman@raspberrypi.com>
   3 Date: Thu, 4 Feb 2021 17:29:32 +0000
   4 Subject: [PATCH] media: i2c: imx290: Replace V4L2_CID_GAIN with
   5  V4L2_CID_ANALOGUE_GAIN
   6
   7 Most software (including libcamera) requires V4L2_CID_ANALOGUE_GAIN,
   8 not V4L2_CID_GAIN.
   9
  10 The range for the control is 0 to 100 for which the sensor uses only
  11 analogue gain; higher values would involve digital gain which this
  12 control should not apply.
  13
  14 Signed-off-by: David Plowman <david.plowman@raspberrypi.com>
  15 ---
  16  drivers/media/i2c/imx290.c | 4 ++--
  17  1 file changed, 2 insertions(+), 2 deletions(-)
  18
  19 --- a/drivers/media/i2c/imx290.c
  20 +++ b/drivers/media/i2c/imx290.c
  21 @@ -647,7 +647,7 @@ static int imx290_set_ctrl(struct v4l2_c
  22                 return 0;
  23
  24         switch (ctrl->id) {
  25 -       case V4L2_CID_GAIN:
  26 +       case V4L2_CID_ANALOGUE_GAIN:
  27                 ret = imx290_set_gain(imx290, ctrl->val);
  28                 break;
  29         case V4L2_CID_EXPOSURE:
  30 @@ -1327,7 +1327,7 @@ static int imx290_probe(struct i2c_clien
  31         v4l2_ctrl_handler_init(&imx290->ctrls, 4);
  32
  33         v4l2_ctrl_new_std(&imx290->ctrls, &imx290_ctrl_ops,
  34 -                         V4L2_CID_GAIN, 0, 238, 1, 0);
  35 +                         V4L2_CID_ANALOGUE_GAIN, 0, 100, 1, 0);
  36
  37         mode = imx290->current_mode;
  38         imx290->hblank = v4l2_ctrl_new_std(&imx290->ctrls, &imx290_ctrl_ops,