[libcamera-devel] [PATCH 1/2] media: imx258: Rectify mismatch of VTS value

[Laurent Pinchart]

Hi Umang,

Thank you for the patch.

(Expanding the CC list)

On Fri, Jul 23, 2021 at 04:52:32PM +0530, Umang Jain wrote:
> From: Laurent Pinchart <laurent.pinchart at ideasonboard.com>
> 
> The frame_length_lines (0x0340) registers are hard-coded as follows:
> 
> - 4208x3118
>   frame_length_lines = 0x0c50
> 
> - 2104x1560
>   frame_length_lines = 0x0638
> 
> - 1048x780
>   frame_length_lines = 0x034c
> 
> The driver exposes the V4L2_CID_VBLANK control in read-only mode and
> sets its value to vts_def - height, where vts_def is a mode-dependent
> value coming from the supported_modes array. It is set using one of
> the following macros defined in the driver:
> 
>   #define IMX258_VTS_30FPS                0x0c98
>   #define IMX258_VTS_30FPS_2K             0x0638
>   #define IMX258_VTS_30FPS_VGA            0x034c
> 
> There's a clear mismatch in the value for the full resolution mode i.e.
> IMX258_VTS_30FPS. Fix it by rectifying the macro with the value set for
> the frame_length_lines register as stated above.
> 
> Signed-off-by: Laurent Pinchart <laurent.pinchart at ideasonboard.com>
> Signed-off-by: Umang Jain <umang.jain at ideasonboard.com>

Reviewed-by: Laurent Pinchart <laurent.pinchart at ideasonboard.com>

> ---
>  drivers/media/i2c/imx258.c | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
> 
> diff --git a/drivers/media/i2c/imx258.c b/drivers/media/i2c/imx258.c
> index 7ab9e5f9f267..4e695096e5d0 100644
> --- a/drivers/media/i2c/imx258.c
> +++ b/drivers/media/i2c/imx258.c
> @@ -23,7 +23,7 @@
>  #define IMX258_CHIP_ID			0x0258
>  
>  /* V_TIMING internal */
> -#define IMX258_VTS_30FPS		0x0c98
> +#define IMX258_VTS_30FPS		0x0c50
>  #define IMX258_VTS_30FPS_2K		0x0638
>  #define IMX258_VTS_30FPS_VGA		0x034c
>  #define IMX258_VTS_MAX			0xffff

-- 
Regards,

Laurent Pinchart