target/linux/bcm27xx/patches-5.15/950-0403-media-i2c-imx477-Fix-for-long-exposure-limit-calcula.patch

   1 From 28d69f0b8b5b66551071919c652355d266e8a841 Mon Sep 17 00:00:00 2001
   2 From: Naushir Patuck <naush@raspberrypi.com>
   3 Date: Fri, 11 Jun 2021 12:47:07 +0100
   4 Subject: [PATCH] media: i2c: imx477: Fix for long exposure limit
   5  calculations
   6
   7 Do not scale IMX477_EXPOSURE_OFFSET with the long exposure factor during
   8 the limit calculations. This allows larger exposure times, and does seem to be
   9 what the sensor is doing internally.
  10
  11 Signed-off-by: Naushir Patuck <naush@raspberrypi.com>
  12 ---
  13  drivers/media/i2c/imx477.c | 2 +-
  14  1 file changed, 1 insertion(+), 1 deletion(-)
  15
  16 --- a/drivers/media/i2c/imx477.c
  17 +++ b/drivers/media/i2c/imx477.c
  18 @@ -1282,7 +1282,7 @@ static void imx477_adjust_exposure_range
  19
  20         /* Honour the VBLANK limits when setting exposure. */
  21         exposure_max = imx477->mode->height + imx477->vblank->val -
  22 -                      (IMX477_EXPOSURE_OFFSET << imx477->long_exp_shift);
  23 +                      IMX477_EXPOSURE_OFFSET;
  24         exposure_def = min(exposure_max, imx477->exposure->val);
  25         __v4l2_ctrl_modify_range(imx477->exposure, imx477->exposure->minimum,
  26                                  exposure_max, imx477->exposure->step,