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Message-ID: <e6318d2a-474b-48c8-8902-41b622a90e4c@amd.com>
Date: Wed, 3 Sep 2025 15:59:40 +0200
From: "Sagar, Vishal" <vishal.sagar@....com>
To: Tomi Valkeinen <tomi.valkeinen@...asonboard.com>,
Anatoliy Klymenko <anatoliy.klymenko@....com>,
Maarten Lankhorst <maarten.lankhorst@...ux.intel.com>,
Maxime Ripard <mripard@...nel.org>, Thomas Zimmermann <tzimmermann@...e.de>,
David Airlie <airlied@...il.com>, Simona Vetter <simona@...ll.ch>,
Laurent Pinchart <laurent.pinchart@...asonboard.com>,
Michal Simek <michal.simek@....com>
Cc: dri-devel@...ts.freedesktop.org, linux-kernel@...r.kernel.org,
linux-arm-kernel@...ts.infradead.org,
Geert Uytterhoeven <geert@...ux-m68k.org>,
Dmitry Baryshkov <dmitry.baryshkov@....qualcomm.com>,
Pekka Paalanen <ppaalanen@...il.com>
Subject: Re: [PATCH v5 04/11] drm/fourcc: Add DRM_FORMAT_Y10_P32
Hi Tomi,
On 4/25/2025 1:01 PM, Tomi Valkeinen wrote:
> Add Y10_P32, a 10 bit greyscale format, with 3 pixels packed into
> 32-bit container.
>
> The fourcc for the format is 'YPA4', which comes from Y - Y only, P -
> packed, A - 10 (as in 0xA), 4 - 4 bytes.
>
> Signed-off-by: Tomi Valkeinen <tomi.valkeinen@...asonboard.com>
> ---
> drivers/gpu/drm/drm_fourcc.c | 3 +++
> include/uapi/drm/drm_fourcc.h | 1 +
> 2 files changed, 4 insertions(+)
>
> diff --git a/drivers/gpu/drm/drm_fourcc.c b/drivers/gpu/drm/drm_fourcc.c
> index 355aaf7b5e9e..e5f04f7ec164 100644
> --- a/drivers/gpu/drm/drm_fourcc.c
> +++ b/drivers/gpu/drm/drm_fourcc.c
> @@ -353,6 +353,9 @@ const struct drm_format_info *__drm_format_info(u32 format)
> { .format = DRM_FORMAT_XV20, .depth = 0, .num_planes = 2,
> .char_per_block = { 4, 8, 0 }, .block_w = { 3, 3, 0 }, .block_h = { 1, 1, 0 },
> .hsub = 2, .vsub = 1, .is_yuv = true },
> + { .format = DRM_FORMAT_Y10_P32, .depth = 0, .num_planes = 1,
> + .char_per_block = { 4, 0, 0 }, .block_w = { 3, 0, 0 }, .block_h = { 1, 0, 0 },
> + .hsub = 1, .vsub = 1, .is_yuv = true },
> };
>
> unsigned int i;
> diff --git a/include/uapi/drm/drm_fourcc.h b/include/uapi/drm/drm_fourcc.h
> index 5af64a683dd7..fceb7a2dfeb4 100644
> --- a/include/uapi/drm/drm_fourcc.h
> +++ b/include/uapi/drm/drm_fourcc.h
> @@ -415,6 +415,7 @@ extern "C" {
> */
>
> #define DRM_FORMAT_Y8 fourcc_code('G', 'R', 'E', 'Y') /* 8-bit Y-only */
> +#define DRM_FORMAT_Y10_P32 fourcc_code('Y', 'P', 'A', '4') /* [31:0] x:Y2:Y1:Y0 2:10:10:10 little endian */
>
> /*
> * Format Modifiers:
>
Thanks for the patch. This looks good to me.
Reviewed-by: Vishal Sagar <vishal.sagar@....com>
Regards
Vishal Sagar
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