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Message-ID: <20250327225529.GD16629@pendragon.ideasonboard.com>
Date: Fri, 28 Mar 2025 00:55:29 +0200
From: Laurent Pinchart <laurent.pinchart@...asonboard.com>
To: Tomi Valkeinen <tomi.valkeinen@...asonboard.com>
Cc: Vishal Sagar <vishal.sagar@....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>,
Michal Simek <michal.simek@....com>,
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>
Subject: Re: [PATCH v4 05/11] drm/fourcc: Add DRM_FORMAT_X403
Hi Tomi,
Thank you for the patch.
On Wed, Mar 26, 2025 at 03:22:48PM +0200, Tomi Valkeinen wrote:
> Add X403, a 3 plane non-subsampled YCbCr format.
I'd add 10-bpp somewhere in there.
> Signed-off-by: Tomi Valkeinen <tomi.valkeinen@...asonboard.com>
> ---
> drivers/gpu/drm/drm_fourcc.c | 3 +++
> include/uapi/drm/drm_fourcc.h | 8 ++++++++
> 2 files changed, 11 insertions(+)
>
> diff --git a/drivers/gpu/drm/drm_fourcc.c b/drivers/gpu/drm/drm_fourcc.c
> index e5f04f7ec164..60684f99f4a7 100644
> --- a/drivers/gpu/drm/drm_fourcc.c
> +++ b/drivers/gpu/drm/drm_fourcc.c
> @@ -356,6 +356,9 @@ const struct drm_format_info *__drm_format_info(u32 format)
> { .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 },
> + { .format = DRM_FORMAT_X403, .depth = 0, .num_planes = 3,
> + .char_per_block = { 4, 4, 4 }, .block_w = { 3, 3, 3 }, .block_h = { 1, 1, 1 },
> + .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 f6316adbeb97..10d77f6f6e95 100644
> --- a/include/uapi/drm/drm_fourcc.h
> +++ b/include/uapi/drm/drm_fourcc.h
> @@ -385,6 +385,14 @@ extern "C" {
> */
> #define DRM_FORMAT_Q401 fourcc_code('Q', '4', '0', '1')
>
> +/* 3 plane non-subsampled (444) YCbCr
/*
* 3 plane non-subsampled (444) YCbCr
Reviewed-by: Laurent Pinchart <laurent.pinchart@...asonboard.com>
> + * 10 bpc, 30 bits per sample image data in a single contiguous buffer.
> + * index 0: Y plane, [31:0] x:Y2:Y1:Y0 [2:10:10:10] little endian
> + * index 1: Cb plane, [31:0] x:Cb2:Cb1:Cb0 [2:10:10:10] little endian
> + * index 2: Cr plane, [31:0] x:Cr2:Cr1:Cr0 [2:10:10:10] little endian
> + */
> +#define DRM_FORMAT_X403 fourcc_code('X', '4', '0', '3')
> +
> /*
> * 3 plane YCbCr
> * index 0: Y plane, [7:0] Y
--
Regards,
Laurent Pinchart
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