linux-kernel - Re: [PATCH v3 15/20] media: i2c: ov4689: Move pixel array size out of struct ov4689

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Message-ID: <170957166393.566498.15793679548329156107@ping.linuxembedded.co.uk>
Date: Mon, 04 Mar 2024 17:01:03 +0000
From: Kieran Bingham <kieran.bingham@...asonboard.com>
To: Mikhail Rudenko <mike.rudenko@...il.com>, linux-kernel@...r.kernel.org, linux-media@...r.kernel.org
Cc: Sakari Ailus <sakari.ailus@...ux.intel.com>, Laurent Pinchart <laurent.pinchart@...asonboard.com>, Jacopo Mondi <jacopo@...ndi.org>, Tommaso Merciai <tomm.merciai@...il.com>, Christophe JAILLET <christophe.jaillet@...adoo.fr>, Dave Stevenson <dave.stevenson@...pberrypi.com>, Mauro Carvalho Chehab <mchehab@...nel.org>, Mikhail Rudenko <mike.rudenko@...il.com>
Subject: Re: [PATCH v3 15/20] media: i2c: ov4689: Move pixel array size out of struct ov4689_mode

Quoting Mikhail Rudenko (2024-02-29 16:53:28)
> Pixel array dimensions and default crop size do not belong to the
> ov4689_mode structure, since they are mode independent. Make them
> defines instead.
> 
> Signed-off-by: Mikhail Rudenko <mike.rudenko@...il.com>


Reviewed-by: Kieran Bingham <kieran.bingham@...asonboard.com>

> ---
>  drivers/media/i2c/ov4689.c | 29 +++++++++++++----------------
>  1 file changed, 13 insertions(+), 16 deletions(-)
> 
> diff --git a/drivers/media/i2c/ov4689.c b/drivers/media/i2c/ov4689.c
> index 6c36fe5f3b44..cc8d9fa369e7 100644
> --- a/drivers/media/i2c/ov4689.c
> +++ b/drivers/media/i2c/ov4689.c
> @@ -70,6 +70,11 @@
>  #define OV4689_LANES                   4
>  #define OV4689_XVCLK_FREQ              24000000
>  
> +#define OV4689_PIXEL_ARRAY_WIDTH       2720
> +#define OV4689_PIXEL_ARRAY_HEIGHT      1536
> +#define OV4689_DUMMY_ROWS              8       /* 8 dummy rows on each side */
> +#define OV4689_DUMMY_COLUMNS           16      /* 16 dummy columns on each side */
> +
>  static const char *const ov4689_supply_names[] = {
>         "avdd", /* Analog power */
>         "dovdd", /* Digital I/O power */
> @@ -90,10 +95,6 @@ struct ov4689_mode {
>         u32 vts_def;
>         u32 exp_def;
>         u32 pixel_rate;
> -       u32 sensor_width;
> -       u32 sensor_height;
> -       u32 crop_top;
> -       u32 crop_left;
>         const struct cci_reg_sequence *reg_list;
>         unsigned int num_regs;
>  };
> @@ -254,10 +255,6 @@ static const struct ov4689_mode supported_modes[] = {
>                 .id = OV4689_MODE_2688_1520,
>                 .width = 2688,
>                 .height = 1520,
> -               .sensor_width = 2720,
> -               .sensor_height = 1536,
> -               .crop_top = 8,
> -               .crop_left = 16,
>                 .exp_def = 1536,
>                 .hts_def = 10296,
>                 .hts_min = 3432,
> @@ -385,8 +382,6 @@ static int ov4689_get_selection(struct v4l2_subdev *sd,
>                                 struct v4l2_subdev_state *state,
>                                 struct v4l2_subdev_selection *sel)
>  {
> -       const struct ov4689_mode *mode = to_ov4689(sd)->cur_mode;
> -
>         if (sel->which != V4L2_SUBDEV_FORMAT_ACTIVE)
>                 return -EINVAL;
>  
> @@ -394,15 +389,17 @@ static int ov4689_get_selection(struct v4l2_subdev *sd,
>         case V4L2_SEL_TGT_CROP_BOUNDS:
>                 sel->r.top = 0;
>                 sel->r.left = 0;
> -               sel->r.width = mode->sensor_width;
> -               sel->r.height = mode->sensor_height;
> +               sel->r.width = OV4689_PIXEL_ARRAY_WIDTH;
> +               sel->r.height = OV4689_PIXEL_ARRAY_HEIGHT;
>                 return 0;
>         case V4L2_SEL_TGT_CROP:
>         case V4L2_SEL_TGT_CROP_DEFAULT:
> -               sel->r.top = mode->crop_top;
> -               sel->r.left = mode->crop_left;
> -               sel->r.width = mode->width;
> -               sel->r.height = mode->height;
> +               sel->r.top = OV4689_DUMMY_ROWS;
> +               sel->r.left = OV4689_DUMMY_COLUMNS;
> +               sel->r.width =
> +                       OV4689_PIXEL_ARRAY_WIDTH - 2 * OV4689_DUMMY_COLUMNS;
> +               sel->r.height =
> +                       OV4689_PIXEL_ARRAY_HEIGHT - 2 * OV4689_DUMMY_ROWS;
>                 return 0;
>         }
>  
> -- 
> 2.43.0
>