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b=bQ1hwsKCl9XR/7bfaeFLx6kmwILuX7zdnXMPndUkItbPGTr59w9f62Gfp8+AGEJsUSN6WST36ElL1J2fRbP1UhJC5MMqnndH22ElTks465zsN8KMM9tNhYJCbDSTtm2FswebWNbV/sCvomHcU+G63KwGwKL72L91kAOcdEqSffo= Authentication-Results: dkim=none (message not signed) header.d=none;dmarc=none action=none header.from=amd.com; Received: from BL1PR12MB5969.namprd12.prod.outlook.com (2603:10b6:208:398::7) by DM4PR12MB5986.namprd12.prod.outlook.com (2603:10b6:8:69::16) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.9094.17; Wed, 3 Sep 2025 13:59:25 +0000 Received: from BL1PR12MB5969.namprd12.prod.outlook.com ([fe80::1ac7:adec:34f4:86d1]) by BL1PR12MB5969.namprd12.prod.outlook.com ([fe80::1ac7:adec:34f4:86d1%5]) with mapi id 15.20.9094.016; Wed, 3 Sep 2025 13:59:25 +0000 Message-ID: <52c7e4b4-6531-4268-a867-78b434fed9d3@amd.com> Date: Wed, 3 Sep 2025 15:59:20 +0200 User-Agent: Mozilla Thunderbird Subject: Re: [PATCH v5 03/11] drm/fourcc: Add DRM_FORMAT_Y8 To: Tomi Valkeinen , Anatoliy Klymenko , Maarten Lankhorst , Maxime Ripard , Thomas Zimmermann , David Airlie , Simona Vetter , Laurent Pinchart , Michal Simek Cc: dri-devel@lists.freedesktop.org, linux-kernel@vger.kernel.org, linux-arm-kernel@lists.infradead.org, Geert Uytterhoeven , Dmitry Baryshkov , Pekka Paalanen , Dmitry Baryshkov References: <20250425-xilinx-formats-v5-0-c74263231630@ideasonboard.com> <20250425-xilinx-formats-v5-3-c74263231630@ideasonboard.com> From: "Sagar, Vishal" Content-Language: en-US In-Reply-To: <20250425-xilinx-formats-v5-3-c74263231630@ideasonboard.com> Content-Type: text/plain; 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On 4/25/2025 1:01 PM, Tomi Valkeinen wrote: > Add greyscale Y8 format. > > Acked-by: Dmitry Baryshkov > Signed-off-by: Tomi Valkeinen > --- > drivers/gpu/drm/drm_fourcc.c | 1 + > include/uapi/drm/drm_fourcc.h | 10 ++++++++++ > 2 files changed, 11 insertions(+) > > diff --git a/drivers/gpu/drm/drm_fourcc.c b/drivers/gpu/drm/drm_fourcc.c > index e101d1b99aeb..355aaf7b5e9e 100644 > --- a/drivers/gpu/drm/drm_fourcc.c > +++ b/drivers/gpu/drm/drm_fourcc.c > @@ -267,6 +267,7 @@ const struct drm_format_info *__drm_format_info(u32 format) > { .format = DRM_FORMAT_YVU422, .depth = 0, .num_planes = 3, .cpp = { 1, 1, 1 }, .hsub = 2, .vsub = 1, .is_yuv = true }, > { .format = DRM_FORMAT_YUV444, .depth = 0, .num_planes = 3, .cpp = { 1, 1, 1 }, .hsub = 1, .vsub = 1, .is_yuv = true }, > { .format = DRM_FORMAT_YVU444, .depth = 0, .num_planes = 3, .cpp = { 1, 1, 1 }, .hsub = 1, .vsub = 1, .is_yuv = true }, > + { .format = DRM_FORMAT_Y8, .depth = 8, .num_planes = 1, .cpp = { 1, 0, 0 }, .hsub = 1, .vsub = 1, .is_yuv = true }, > { .format = DRM_FORMAT_NV12, .depth = 0, .num_planes = 2, .cpp = { 1, 2, 0 }, .hsub = 2, .vsub = 2, .is_yuv = true }, > { .format = DRM_FORMAT_NV21, .depth = 0, .num_planes = 2, .cpp = { 1, 2, 0 }, .hsub = 2, .vsub = 2, .is_yuv = true }, > { .format = DRM_FORMAT_NV16, .depth = 0, .num_planes = 2, .cpp = { 1, 2, 0 }, .hsub = 2, .vsub = 1, .is_yuv = true }, > diff --git a/include/uapi/drm/drm_fourcc.h b/include/uapi/drm/drm_fourcc.h > index 1247b814bd66..5af64a683dd7 100644 > --- a/include/uapi/drm/drm_fourcc.h > +++ b/include/uapi/drm/drm_fourcc.h > @@ -405,6 +405,16 @@ extern "C" { > #define DRM_FORMAT_YUV444 fourcc_code('Y', 'U', '2', '4') /* non-subsampled Cb (1) and Cr (2) planes */ > #define DRM_FORMAT_YVU444 fourcc_code('Y', 'V', '2', '4') /* non-subsampled Cr (1) and Cb (2) planes */ > > +/* > + * Y-only (greyscale) formats > + * > + * The Y-only formats are handled similarly to the YCbCr formats in the display > + * pipeline, with the Cb and Cr implicitly neutral (0.0 in nominal values). This > + * also means that COLOR_RANGE property applies to the Y-only formats. > + * > + */ > + > +#define DRM_FORMAT_Y8 fourcc_code('G', 'R', 'E', 'Y') /* 8-bit Y-only */ > > /* > * Format Modifiers: > Feel free to add - Reviewed-by: Vishal Sagar Regards Vishal Sagar