target/linux/bcm27xx/patches-6.1/950-1065-drivers-media-imx477-Add-V4L2_CID_LINK_FREQ-control.patch

   1 From c9a785d57c302d5f1d4de4e67fa57522e66c7882 Mon Sep 17 00:00:00 2001
   2 From: Naushir Patuck <naush@raspberrypi.com>
   3 Date: Mon, 6 Nov 2023 09:40:50 +0000
   4 Subject: [PATCH] drivers: media: imx477: Add V4L2_CID_LINK_FREQ control
   5
   6 Add V4L2_CID_LINK_FREQ as a read-only control with a value of 450 Mhz.
   7 This will be used by the CFE driver to corretly setup the DPHY timing
   8 parameters in the CSI-2 block.
   9
  10 Signed-off-by: Naushir Patuck <naush@raspberrypi.com>
  11 ---
  12  drivers/media/i2c/imx477.c | 14 ++++++++++++++
  13  1 file changed, 14 insertions(+)
  14
  15 --- a/drivers/media/i2c/imx477.c
  16 +++ b/drivers/media/i2c/imx477.c
  17 @@ -164,6 +164,10 @@ struct imx477_mode {
  18         struct imx477_reg_list reg_list;
  19  };
  20
  21 +static const s64 imx477_link_freq_menu[] = {
  22 +       IMX477_DEFAULT_LINK_FREQ,
  23 +};
  24 +
  25  static const struct imx477_reg mode_common_regs[] = {
  26         {0x0136, 0x18},
  27         {0x0137, 0x00},
  28 @@ -1110,6 +1114,7 @@ struct imx477 {
  29         struct v4l2_ctrl_handler ctrl_handler;
  30         /* V4L2 Controls */
  31         struct v4l2_ctrl *pixel_rate;
  32 +       struct v4l2_ctrl *link_freq;
  33         struct v4l2_ctrl *exposure;
  34         struct v4l2_ctrl *vflip;
  35         struct v4l2_ctrl *hflip;
  36 @@ -1997,6 +2002,15 @@ static int imx477_init_controls(struct i
  37                                                IMX477_PIXEL_RATE, 1,
  38                                                IMX477_PIXEL_RATE);
  39
  40 +       /* LINK_FREQ is also read only */
  41 +       imx477->link_freq =
  42 +               v4l2_ctrl_new_int_menu(ctrl_hdlr, &imx477_ctrl_ops,
  43 +                                      V4L2_CID_LINK_FREQ,
  44 +                                      ARRAY_SIZE(imx477_link_freq_menu) - 1, 0,
  45 +                                      imx477_link_freq_menu);
  46 +       if (imx477->link_freq)
  47 +               imx477->link_freq->flags |= V4L2_CTRL_FLAG_READ_ONLY;
  48 +
  49         /*
  50          * Create the controls here, but mode specific limits are setup
  51          * in the imx477_set_framing_limits() call below.