From nobody Mon Dec 1 22:36:24 2025 Received: from sender4-pp-f112.zoho.com (sender4-pp-f112.zoho.com [136.143.188.112]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 944902D12E7 for ; Fri, 28 Nov 2025 21:07:11 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=pass smtp.client-ip=136.143.188.112 ARC-Seal: i=2; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1764364033; cv=pass; b=qtcxSD+hH/VLLkJrVZhzQ3hyW0afExMSRToLG+B6zzC/bJDTCQACh5tjpWbPzOkk3ypAnSSJnhFt5xB7ajIKNZx9EfSvpTYsl35FIzrKJPUrYxMnYDemK4w4H9sHbkSOKmtfyuDQhtbv/MuUojeXkhaOF4FHCRI2flb9POH06N0= ARC-Message-Signature: i=2; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1764364033; c=relaxed/simple; bh=5mjn6hgVLxKymwLhfUxBzRze/4db4pY+FDvT+feqyEM=; h=From:Date:Subject:MIME-Version:Content-Type:Message-Id:References: In-Reply-To:To:Cc; b=F4T//58dOvnd8S8JlNISuyZC0YL7ytDd5GvxUmoj+165LbM5gbtqVkFVImQpcQecvWJF8bVSnaO9KMvgu4lZZVMJXtJW139XaOIgW9Kuv5/s39DEAyKFYvCPC55NhG2rM2iRRYC3rUjPHpY+yZsLDz/xbQOTxZozUgR8nJRPBx0= ARC-Authentication-Results: i=2; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=collabora.com; spf=pass smtp.mailfrom=collabora.com; dkim=pass (1024-bit key) header.d=collabora.com header.i=nicolas.frattaroli@collabora.com header.b=TQINlAX2; arc=pass smtp.client-ip=136.143.188.112 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=collabora.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=collabora.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=collabora.com header.i=nicolas.frattaroli@collabora.com header.b="TQINlAX2" ARC-Seal: i=1; a=rsa-sha256; t=1764363989; cv=none; d=zohomail.com; s=zohoarc; b=ltRYQZMSQbQahlUaMGFUv6TAc+K5P0gZ2o8ic5Wwd4cO2qMDohs//nR7rv8Lg6X+p1WJRqy09HMZUne62eXZLSqKWP4BEKf0ix/I8jtCL7XqslFXfvgphSNKDKgxu0cLJSk1Hy3pgh9p6Dj0XF+NQ8g7uR9wEIozGAedXkjCWyU= ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=zohomail.com; s=zohoarc; t=1764363989; h=Content-Type:Content-Transfer-Encoding:Cc:Cc:Date:Date:From:From:In-Reply-To:MIME-Version:Message-ID:References:Subject:Subject:To:To:Message-Id:Reply-To; bh=LJlLpIcTWK8jvmdJwFTtROJr/bm5rTE4uW19f+6gRVU=; b=fL/oErsp8z/5wTWlv1feoSa7Oc1WWgMvlmFR2HsTH5PIn0q4N39E64m1LI7ZRRbdVb5vTbkngN6s+oXlgOtamgB0V0GE7aLxMoqdQQQrlCCvdfn+8sZraXEYhDMlOezg/agWRPyecK5AQCjMHW4qE4h+oS75bhtQiKZu0C2Gtm0= ARC-Authentication-Results: i=1; mx.zohomail.com; dkim=pass header.i=collabora.com; spf=pass smtp.mailfrom=nicolas.frattaroli@collabora.com; dmarc=pass header.from= DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; t=1764363989; s=zohomail; d=collabora.com; i=nicolas.frattaroli@collabora.com; h=From:From:Date:Date:Subject:Subject:MIME-Version:Content-Type:Content-Transfer-Encoding:Message-Id:Message-Id:References:In-Reply-To:To:To:Cc:Cc:Reply-To; bh=LJlLpIcTWK8jvmdJwFTtROJr/bm5rTE4uW19f+6gRVU=; b=TQINlAX2R4Yyg4qgu9eON73rsg6ZMNWwPTBvmRdCcjicVdHTqHjm84nYMm4NgqLG AIU1Xclcrvce2FlWRUJjKfRy3zIGOZxhZfi5RdEQknvEjPm+KgYAJDRIiI53TKNlR03 X56tyCFezyGHSgGJYTgN/9bQQoZ7yPJdjrqzyZF0= Received: by mx.zohomail.com with SMTPS id 1764363987133732.0157606341392; Fri, 28 Nov 2025 13:06:27 -0800 (PST) From: Nicolas Frattaroli Date: Fri, 28 Nov 2025 22:05:40 +0100 Subject: [PATCH v5 04/17] drm/bridge: Act on the DRM color format property Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: quoted-printable Message-Id: <20251128-color-format-v5-4-63e82f1db1e1@collabora.com> References: <20251128-color-format-v5-0-63e82f1db1e1@collabora.com> In-Reply-To: <20251128-color-format-v5-0-63e82f1db1e1@collabora.com> To: Harry Wentland , Leo Li , Rodrigo Siqueira , Alex Deucher , =?utf-8?q?Christian_K=C3=B6nig?= , David Airlie , Simona Vetter , Maarten Lankhorst , Maxime Ripard , Thomas Zimmermann , Andrzej Hajda , Neil Armstrong , Robert Foss , Laurent Pinchart , Jonas Karlman , Jernej Skrabec , Sandy Huang , =?utf-8?q?Heiko_St=C3=BCbner?= , Andy Yan , Jani Nikula , Rodrigo Vivi , Joonas Lahtinen , Tvrtko Ursulin , Dmitry Baryshkov , Sascha Hauer , Rob Herring Cc: kernel@collabora.com, amd-gfx@lists.freedesktop.org, dri-devel@lists.freedesktop.org, linux-kernel@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-rockchip@lists.infradead.org, intel-gfx@lists.freedesktop.org, intel-xe@lists.freedesktop.org, Nicolas Frattaroli X-Mailer: b4 0.14.3 The new DRM color format property allows userspace to request a specific color format on a connector. In turn, this fills the connector state's color_format member to switch color formats. Make drm_bridges consider the color_format set in the connector state during the atomic bridge check. Specifically, reject any output bus formats that do not correspond to the requested color format. Signed-off-by: Nicolas Frattaroli --- drivers/gpu/drm/drm_bridge.c | 45 ++++++++++++++++++++++++++++++++++++++++= ++++ 1 file changed, 45 insertions(+) diff --git a/drivers/gpu/drm/drm_bridge.c b/drivers/gpu/drm/drm_bridge.c index 8f355df883d8..8aac9747f35e 100644 --- a/drivers/gpu/drm/drm_bridge.c +++ b/drivers/gpu/drm/drm_bridge.c @@ -1052,6 +1052,47 @@ static int select_bus_fmt_recursive(struct drm_bridg= e *first_bridge, return ret; } =20 +static bool __pure bus_format_is_color_fmt(u32 bus_fmt, enum drm_color_for= mat fmt) +{ + if (fmt =3D=3D DRM_COLOR_FORMAT_AUTO) + return true; + + switch (bus_fmt) { + case MEDIA_BUS_FMT_FIXED: + return true; + case MEDIA_BUS_FMT_RGB888_1X24: + case MEDIA_BUS_FMT_RGB101010_1X30: + case MEDIA_BUS_FMT_RGB121212_1X36: + case MEDIA_BUS_FMT_RGB161616_1X48: + return fmt =3D=3D DRM_COLOR_FORMAT_RGB444; + case MEDIA_BUS_FMT_YUV8_1X24: + case MEDIA_BUS_FMT_YUV10_1X30: + case MEDIA_BUS_FMT_YUV12_1X36: + case MEDIA_BUS_FMT_YUV16_1X48: + return fmt =3D=3D DRM_COLOR_FORMAT_YCBCR444; + case MEDIA_BUS_FMT_UYVY8_1X16: + case MEDIA_BUS_FMT_VYUY8_1X16: + case MEDIA_BUS_FMT_YUYV8_1X16: + case MEDIA_BUS_FMT_YVYU8_1X16: + case MEDIA_BUS_FMT_UYVY10_1X20: + case MEDIA_BUS_FMT_YUYV10_1X20: + case MEDIA_BUS_FMT_VYUY10_1X20: + case MEDIA_BUS_FMT_YVYU10_1X20: + case MEDIA_BUS_FMT_UYVY12_1X24: + case MEDIA_BUS_FMT_VYUY12_1X24: + case MEDIA_BUS_FMT_YUYV12_1X24: + case MEDIA_BUS_FMT_YVYU12_1X24: + return fmt =3D=3D DRM_COLOR_FORMAT_YCBCR422; + case MEDIA_BUS_FMT_UYYVYY8_0_5X24: + case MEDIA_BUS_FMT_UYYVYY10_0_5X30: + case MEDIA_BUS_FMT_UYYVYY12_0_5X36: + case MEDIA_BUS_FMT_UYYVYY16_0_5X48: + return fmt =3D=3D DRM_COLOR_FORMAT_YCBCR420; + default: + return false; + } +} + /* * This function is called by &drm_atomic_bridge_chain_check() just before * calling &drm_bridge_funcs.atomic_check() on all elements of the chain. @@ -1137,6 +1178,10 @@ drm_atomic_bridge_chain_select_bus_fmts(struct drm_b= ridge *bridge, } =20 for (i =3D 0; i < num_out_bus_fmts; i++) { + if (!bus_format_is_color_fmt(out_bus_fmts[i], conn_state->color_format))= { + ret =3D -ENOTSUPP; + continue; + } ret =3D select_bus_fmt_recursive(bridge, last_bridge, crtc_state, conn_state, out_bus_fmts[i]); if (ret !=3D -ENOTSUPP) --=20 2.52.0