Re: [PATCH v2 1/2] drm_fourcc: Add new P010, P016 video format

[Daniel Stone]

Hi Randy,

On 4 January 2017 at 16:29, Randy Li <ayaka@xxxxxxxxxxx> wrote:
> index 90d2cc8..23c8e99 100644
> --- a/drivers/gpu/drm/drm_fourcc.c
> +++ b/drivers/gpu/drm/drm_fourcc.c
> @@ -165,6 +165,9 @@ const struct drm_format_info *__drm_format_info(u32 format)
>                 { .format = DRM_FORMAT_UYVY,            .depth = 0,  .num_planes = 1, .cpp = { 2, 0, 0 }, .hsub = 2, .vsub = 1 },
>                 { .format = DRM_FORMAT_VYUY,            .depth = 0,  .num_planes = 1, .cpp = { 2, 0, 0 }, .hsub = 2, .vsub = 1 },
>                 { .format = DRM_FORMAT_AYUV,            .depth = 0,  .num_planes = 1, .cpp = { 4, 0, 0 }, .hsub = 1, .vsub = 1 },
> +               /* FIXME a pixel in Y for P010 is 10 bits */
> +               { .format = DRM_FORMAT_P010,            .depth = 0,  .num_planes = 2, .cpp = { 1, 2, 0 }, .hsub = 2, .vsub = 2 },

It seems like P010 stores each Y component in a 16-bit value, with the
bottom 6 bits ignored. So I think cpp here should be 2.

Cheers,
Daniel