On 09/02/2021 17:24, Stanimir Varbanov wrote:
> Add Colorimetry control class for colorimetry controls
> 
> Signed-off-by: Stanimir Varbanov <[email protected]>
> ---
>  drivers/media/v4l2-core/v4l2-ctrls.c | 7 ++++++-
>  include/uapi/linux/v4l2-controls.h   | 4 ++++
>  2 files changed, 10 insertions(+), 1 deletion(-)
> 
> diff --git a/drivers/media/v4l2-core/v4l2-ctrls.c 
> b/drivers/media/v4l2-core/v4l2-ctrls.c
> index 016cf6204cbb..335cf354f51b 100644
> --- a/drivers/media/v4l2-core/v4l2-ctrls.c
> +++ b/drivers/media/v4l2-core/v4l2-ctrls.c
> @@ -1201,6 +1201,10 @@ const char *v4l2_ctrl_get_name(u32 id)
>       case V4L2_CID_STATELESS_H264_SLICE_PARAMS:              return "H264 
> Slice Parameters";
>       case V4L2_CID_STATELESS_H264_DECODE_PARAMS:             return "H264 
> Decode Parameters";
>       case V4L2_CID_STATELESS_FWHT_PARAMS:                    return "FWHT 
> Stateless Parameters";
> +
> +     /* Colorimetry controls */
> +     /* Keep the order of the 'case's the same as in v4l2-controls.h! */
> +     case V4L2_CID_COLORIMETRY_CLASS:        return "Colorimetry Controls";
>       default:
>               return NULL;
>       }
> @@ -1389,8 +1393,9 @@ void v4l2_ctrl_fill(u32 id, const char **name, enum 
> v4l2_ctrl_type *type,
>       case V4L2_CID_RF_TUNER_CLASS:
>       case V4L2_CID_DETECT_CLASS:
>       case V4L2_CID_CODEC_STATELESS_CLASS:
> +     case V4L2_CID_COLORIMETRY_CLASS:
>               *type = V4L2_CTRL_TYPE_CTRL_CLASS;
> -             /* You can neither read not write these */
> +             /* You can neither read nor write these */
>               *flags |= V4L2_CTRL_FLAG_READ_ONLY | V4L2_CTRL_FLAG_WRITE_ONLY;
>               *min = *max = *step = *def = 0;
>               break;
> diff --git a/include/uapi/linux/v4l2-controls.h 
> b/include/uapi/linux/v4l2-controls.h
> index 039c0d7add1b..a41039559193 100644
> --- a/include/uapi/linux/v4l2-controls.h
> +++ b/include/uapi/linux/v4l2-controls.h
> @@ -66,6 +66,7 @@
>  #define V4L2_CTRL_CLASS_RF_TUNER     0x00a20000      /* RF tuner controls */
>  #define V4L2_CTRL_CLASS_DETECT               0x00a30000      /* Detection 
> controls */
>  #define V4L2_CTRL_CLASS_CODEC_STATELESS 0x00a40000   /* Stateless codecs 
> controls */
> +#define V4L2_CTRL_CLASS_COLORIMETRY  0x00a50000      /* Colorimetry controls 
> */
>  
>  /* User-class control IDs */
>  
> @@ -1657,6 +1658,9 @@ struct v4l2_ctrl_fwht_params {
>       __u32 quantization;
>  };
>  
> +#define V4L2_CID_COLORIMETRY_CLASS_BASE      (V4L2_CTRL_CLASS_COLORIMETRY | 
> 0x900)
> +#define V4L2_CID_COLORIMETRY_CLASS   (V4L2_CTRL_CLASS_COLORIMETRY | 1)
> +
>  /* MPEG-compression definitions kept for backwards compatibility */
>  #ifndef __KERNEL__
>  #define V4L2_CTRL_CLASS_MPEG            V4L2_CTRL_CLASS_CODEC
> 

Reviewed-by: Hans Verkuil <[email protected]>

Regards,

        Hans

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