From nobody Tue Dec 2 03:03:33 2025 Received: from sender3-pp-f112.zoho.com (sender3-pp-f112.zoho.com [136.143.184.112]) (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 D5C2632AAC3 for ; Mon, 17 Nov 2025 19:13:46 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=pass smtp.client-ip=136.143.184.112 ARC-Seal: i=2; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1763406829; cv=pass; b=B5u3TeUo8Zezsoy+JlXKpiLGRNJPwgFHx1an1Bjk+POf3A3Pa5CFumQ+MfHz84JzNHaAyayGgpBdhdb1yQo5DX5ETiBAYfIpGcZziwg8QHLOiRcZvk3X4UKstq11CCv/fttp6BaoV9hvBRYCEWcuF1aH53IoWvawzpSPX9avmC0= ARC-Message-Signature: i=2; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1763406829; c=relaxed/simple; bh=+vA6ev3wztMdwZka+e8WWnUdEL5OV/tAXOZeMQc5hyI=; h=From:Date:Subject:MIME-Version:Content-Type:Message-Id:References: In-Reply-To:To:Cc; b=icRQq3/ZSo7XmOcO8w1ImmEEntOeCtO4o4b7HCixwFJ5tHdys5tQTGynFLgLCO4BYIpJ9RP8gaQbubW1B4Q9UsxVoOGr4ywRuosFkoUNe2cig5Dm537fB/ZRC14MSf0uDdi0v57To6IxFgFG8OHZboRuGyEL/HwALgE6xxzDHhQ= 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=h5mnxMVb; arc=pass smtp.client-ip=136.143.184.112 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="h5mnxMVb" ARC-Seal: i=1; a=rsa-sha256; t=1763406768; cv=none; d=zohomail.com; s=zohoarc; b=cVM9978GDavgE50qYqu/y/GBTUKtg3eiRR5t6sf9f64Rf50DbbU3nqSJEAxVskfXsGARweifmsqym/Cfe4W74z0kcs97SVo4iKhD53tw7jAJSwUD2pdw0JkcMV81Jk5jIP6Nl3FBlgCevS9w1B4Qfbb7a19mSJT+t5EQR788cYo= ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=zohomail.com; s=zohoarc; t=1763406768; 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=S6LcICyBa/1soH/3gHBQS+INlICwkZAcXtWkwxSMBkQ=; b=MktG0vxhPEiJmpcbNWUw3bfyL3uMsrZbWiJwUUuYwQmsqZQEEWUek66E0nQ3Ini0sAYP2xXJ1Ox+qtSgyDmx/UnyOFUj8p07EOdAPbAq0VyvrmpFn9Fjupee44ZpRPdfDrwXh8OYp7HuLSijyCpGCzG2UvNFcFmlXtIHbfkz7jc= 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=1763406768; 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=S6LcICyBa/1soH/3gHBQS+INlICwkZAcXtWkwxSMBkQ=; b=h5mnxMVbJ75hfO3GUG5awBD3Be9327Rs80GR6qflKO84rDj1lwNlCXDaTAZ4ONob VW0NPofk659ym0BLJYpwmT8KgvT0AW4LVhJ0reojxBXIMAMQgXPF6E563Z5QKU2rI7a bQNdXDAKNtDYqCUbpOtjZwgOrrD801Qvu/8ztvQg= Received: by mx.zohomail.com with SMTPS id 1763406765821183.3489410114414; Mon, 17 Nov 2025 11:12:45 -0800 (PST) From: Nicolas Frattaroli Date: Mon, 17 Nov 2025 20:11:48 +0100 Subject: [PATCH v4 04/10] 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: <20251117-color-format-v4-4-0ded72bd1b00@collabora.com> References: <20251117-color-format-v4-0-0ded72bd1b00@collabora.com> In-Reply-To: <20251117-color-format-v4-0-0ded72bd1b00@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 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 | 57 ++++++++++++++++++++++++++++++++++++++++= ++++ 1 file changed, 57 insertions(+) diff --git a/drivers/gpu/drm/drm_bridge.c b/drivers/gpu/drm/drm_bridge.c index 8f355df883d8..b7df5cbad832 100644 --- a/drivers/gpu/drm/drm_bridge.c +++ b/drivers/gpu/drm/drm_bridge.c @@ -1052,6 +1052,59 @@ 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 (bus_fmt =3D=3D MEDIA_BUS_FMT_FIXED) + return true; + + switch (fmt) { + case DRM_COLOR_FORMAT_NONE: + case DRM_COLOR_FORMAT_AUTO: + return true; + case DRM_COLOR_FORMAT_RGB444: + switch (bus_fmt) { + 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 true; + default: + return false; + } + case DRM_COLOR_FORMAT_YCBCR444: + switch (bus_fmt) { + 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 true; + default: + return false; + } + case DRM_COLOR_FORMAT_YCBCR422: + switch (bus_fmt) { + case MEDIA_BUS_FMT_UYVY8_1X16: + case MEDIA_BUS_FMT_UYVY10_1X20: + case MEDIA_BUS_FMT_UYVY12_1X24: + return true; + default: + return false; + } + case DRM_COLOR_FORMAT_YCBCR420: + switch (bus_fmt) { + 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 true; + default: + return false; + } + } + + 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 +1190,10 @@ 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 2.51.2