Quoting Daniel Scally (2022-03-02 22:24:48)
> The ov8865's datasheet gives the pixel array as 3296x2528, and the
> active portion as the centre 3264x2448. This makes for a top offset
> of 40 and a left offset of 16, not 32 and 80.
Figure 3.1 shows 24 black lines, and 16 dummy lines at the top and
bottom, giving 40 indeed.
And with 16 dummy pixel columns to both the left and right, this all
checks out.
Reviewed-by: Kieran Bingham <kieran.bingham+renesas@xxxxxxxxxxxxxxxx>
> Fixes: acd25e220921 ("media: i2c: Add .get_selection() support to ov8865")
>
> Reported-by: Jean-Michel Hautbois <jeanmichel.hautbois@xxxxxxxxxxxxxxxx>
> Signed-off-by: Daniel Scally <djrscally@xxxxxxxxx>
> ---
> Changes in v2:
>
> - Swapped the ordering of the lines so the left offset is first (Paul)
>
> drivers/media/i2c/ov8865.c | 4 ++--
> 1 file changed, 2 insertions(+), 2 deletions(-)
>
> diff --git a/drivers/media/i2c/ov8865.c b/drivers/media/i2c/ov8865.c
> index cfc726e0ed1e..b8f4f0d3e33d 100644
> --- a/drivers/media/i2c/ov8865.c
> +++ b/drivers/media/i2c/ov8865.c
> @@ -457,8 +457,8 @@
>
> #define OV8865_NATIVE_WIDTH 3296
> #define OV8865_NATIVE_HEIGHT 2528
> -#define OV8865_ACTIVE_START_TOP 32
> -#define OV8865_ACTIVE_START_LEFT 80
> +#define OV8865_ACTIVE_START_LEFT 16
> +#define OV8865_ACTIVE_START_TOP 40
> #define OV8865_ACTIVE_WIDTH 3264
> #define OV8865_ACTIVE_HEIGHT 2448
>
> --
> 2.25.1
>
