target/linux/bcm27xx/patches-5.15/950-0733-media-i2c-ov7251-Add-get_selection-for-NATIVE_SIZE-C.patch

   1 From 71fdb5d9021eb4aba727af8e5a7daedeb2f00860 Mon Sep 17 00:00:00 2001
   2 From: Dave Stevenson <dave.stevenson@raspberrypi.com>
   3 Date: Thu, 17 Feb 2022 16:23:23 +0000
   4 Subject: [PATCH] media: i2c: ov7251: Add get_selection for
   5  NATIVE_SIZE, CROP_BOUNDS, CROP_DEFAULT
   6
   7 As required by libcamera, add get_selection handling for
   8 V4L2_SEL_TGT_NATIVE_SIZE, V4L2_SEL_TGT_CROP_DEFAULT, and
   9 V4L2_SEL_TGT_CROP_BOUNDS.
  10
  11 Signed-off-by: Dave Stevenson <dave.stevenson@raspberrypi.com>
  12 ---
  13  drivers/media/i2c/ov7251.c | 45 ++++++++++++++++++++++++++++++++------
  14  1 file changed, 38 insertions(+), 7 deletions(-)
  15
  16 --- a/drivers/media/i2c/ov7251.c
  17 +++ b/drivers/media/i2c/ov7251.c
  18 @@ -56,6 +56,18 @@
  19  #define OV7251_PLL2_SYS_DIV_REG                0x309a
  20  #define OV7251_PLL2_ADC_DIV_REG                0x309b
  21
  22 +/*
  23 + * OV7251 native and active pixel array size.
  24 + * Datasheet not available to confirm these values, so assume there are no
  25 + * border pixels.
  26 + */
  27 +#define OV7251_NATIVE_WIDTH            640U
  28 +#define OV7251_NATIVE_HEIGHT           480U
  29 +#define OV7251_PIXEL_ARRAY_LEFT                0U
  30 +#define OV7251_PIXEL_ARRAY_TOP         0U
  31 +#define OV7251_PIXEL_ARRAY_WIDTH       640U
  32 +#define OV7251_PIXEL_ARRAY_HEIGHT      480U
  33 +
  34  #define OV7251_PIXEL_CLOCK 48000000
  35
  36  struct reg_value {
  37 @@ -1212,15 +1224,34 @@ static int ov7251_get_selection(struct v
  38  {
  39         struct ov7251 *ov7251 = to_ov7251(sd);
  40
  41 -       if (sel->target != V4L2_SEL_TGT_CROP)
  42 -               return -EINVAL;
  43 +       switch (sel->target) {
  44 +       case V4L2_SEL_TGT_CROP:
  45 +               mutex_lock(&ov7251->lock);
  46 +               sel->r = *__ov7251_get_pad_crop(ov7251, sd_state, sel->pad,
  47 +                                               sel->which);
  48 +               mutex_unlock(&ov7251->lock);
  49
  50 -       mutex_lock(&ov7251->lock);
  51 -       sel->r = *__ov7251_get_pad_crop(ov7251, sd_state, sel->pad,
  52 -                                       sel->which);
  53 -       mutex_unlock(&ov7251->lock);
  54 +               return 0;
  55
  56 -       return 0;
  57 +       case V4L2_SEL_TGT_NATIVE_SIZE:
  58 +               sel->r.top = 0;
  59 +               sel->r.left = 0;
  60 +               sel->r.width = OV7251_NATIVE_WIDTH;
  61 +               sel->r.height = OV7251_NATIVE_HEIGHT;
  62 +
  63 +               return 0;
  64 +
  65 +       case V4L2_SEL_TGT_CROP_DEFAULT:
  66 +       case V4L2_SEL_TGT_CROP_BOUNDS:
  67 +               sel->r.top = OV7251_PIXEL_ARRAY_TOP;
  68 +               sel->r.left = OV7251_PIXEL_ARRAY_LEFT;
  69 +               sel->r.width = OV7251_PIXEL_ARRAY_WIDTH;
  70 +               sel->r.height = OV7251_PIXEL_ARRAY_HEIGHT;
  71 +
  72 +               return 0;
  73 +       }
  74 +
  75 +       return -EINVAL;
  76  }
  77
  78  static int ov7251_s_stream(struct v4l2_subdev *subdev, int enable)