target/linux/bcm27xx/patches-6.1/950-0622-media-i2c-imx290-Add-exposure-time-control.patch

   1 From ead4ef32c120f20ee9b1d8f9f0a4f75c2dc14af3 Mon Sep 17 00:00:00 2001
   2 From: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
   3 Date: Sun, 16 Oct 2022 09:15:15 +0300
   4 Subject: [PATCH] media: i2c: imx290: Add exposure time control
   5
   6 Upstream commit 827c7e69cb2d.
   7
   8 Support configuring the exposure time, which is expressed as the
   9 complement of the exposure time (frame period minus integration time).
  10 The frame period is currently fixed.
  11
  12 Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
  13 Acked-by: Alexander Stein <alexander.stein@ew.tq-group.com>
  14 Reviewed-by: Dave Stevenson <dave.stevenson@raspberrypi.com>
  15 Signed-off-by: Sakari Ailus <sakari.ailus@linux.intel.com>
  16 ---
  17  drivers/media/i2c/imx290.c | 16 ++++++++++++++--
  18  1 file changed, 14 insertions(+), 2 deletions(-)
  19
  20 --- a/drivers/media/i2c/imx290.c
  21 +++ b/drivers/media/i2c/imx290.c
  22 @@ -103,6 +103,8 @@
  23  #define IMX290_PGCTRL_THRU                             BIT(1)
  24  #define IMX290_PGCTRL_MODE(n)                          ((n) << 4)
  25
  26 +#define IMX290_VMAX_DEFAULT                            1125
  27 +
  28  static const char * const imx290_supply_name[] = {
  29         "vdda",
  30         "vddd",
  31 @@ -176,7 +178,7 @@ static const char * const imx290_test_pa
  32
  33  static const struct imx290_regval imx290_global_init_settings[] = {
  34         { IMX290_CTRL_07, IMX290_WINMODE_1080P },
  35 -       { IMX290_VMAX, 1125 },
  36 +       { IMX290_VMAX, IMX290_VMAX_DEFAULT },
  37         { IMX290_EXTCK_FREQ, 0x2520 },
  38         { IMX290_WINWV_OB, 12 },
  39         { IMX290_WINPH, 0 },
  40 @@ -480,6 +482,12 @@ static int imx290_set_ctrl(struct v4l2_c
  41         case V4L2_CID_GAIN:
  42                 ret = imx290_write(imx290, IMX290_GAIN, ctrl->val, NULL);
  43                 break;
  44 +
  45 +       case V4L2_CID_EXPOSURE:
  46 +               ret = imx290_write(imx290, IMX290_SHS1,
  47 +                                  IMX290_VMAX_DEFAULT - ctrl->val - 1, NULL);
  48 +               break;
  49 +
  50         case V4L2_CID_TEST_PATTERN:
  51                 if (ctrl->val) {
  52                         imx290_write(imx290, IMX290_BLKLEVEL, 0, &ret);
  53 @@ -1008,12 +1016,16 @@ static int imx290_probe(struct i2c_clien
  54          */
  55         imx290_entity_init_cfg(&imx290->sd, NULL);
  56
  57 -       v4l2_ctrl_handler_init(&imx290->ctrls, 4);
  58 +       v4l2_ctrl_handler_init(&imx290->ctrls, 5);
  59         imx290->ctrls.lock = &imx290->lock;
  60
  61         v4l2_ctrl_new_std(&imx290->ctrls, &imx290_ctrl_ops,
  62                           V4L2_CID_GAIN, 0, 72, 1, 0);
  63
  64 +       v4l2_ctrl_new_std(&imx290->ctrls, &imx290_ctrl_ops,
  65 +                         V4L2_CID_EXPOSURE, 1, IMX290_VMAX_DEFAULT - 2, 1,
  66 +                         IMX290_VMAX_DEFAULT - 2);
  67 +
  68         imx290->link_freq =
  69                 v4l2_ctrl_new_int_menu(&imx290->ctrls, &imx290_ctrl_ops,
  70                                        V4L2_CID_LINK_FREQ,