From nobody Fri Dec 19 12:18:32 2025 Received: from bali.collaboradmins.com (bali.collaboradmins.com [148.251.105.195]) (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 D75361B412A for ; Wed, 26 Mar 2025 10:20:01 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=148.251.105.195 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1742984404; cv=none; b=go35X2L2A36/3B2/nhrgOxucluFLan++BZwWQrYxKgW8KyS5rDTT3H2xIGLeO1dBa0AdwKl/bHgjqe2uPwH8mv2Q2Ja+8APxyNjPnCMwnLjZbl+3UU4xotWdKGPgOqjxuajb6chBe6sYbmULkAgNSE8VoWIOhHX651pJssxYPnI= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1742984404; c=relaxed/simple; bh=zuXvsJShj0t09YnGKpFJkGXTDa0DsPXYcqltF9EFW70=; h=From:Date:Subject:MIME-Version:Content-Type:Message-Id:References: In-Reply-To:To:Cc; b=dPcEzt3/cSE75PQh4cXqxUCy0B+ZOtdGPhSzj2GaD2dZ2SAPAlYa1NMdHXVSols8vaL56Lu9qKlkxdGXqiBZvk9VqjfNgxE9Oi/XrgT/MOrwk/aQJdJjhv9hHMeCO8V4H9FOAE/OJp3ZOn5KQyxi8HH3QiHtS5thBpAf69qe0RI= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=collabora.com; spf=pass smtp.mailfrom=collabora.com; dkim=pass (2048-bit key) header.d=collabora.com header.i=@collabora.com header.b=i8wnmpMc; arc=none smtp.client-ip=148.251.105.195 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 (2048-bit key) header.d=collabora.com header.i=@collabora.com header.b="i8wnmpMc" DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=collabora.com; s=mail; t=1742984399; bh=zuXvsJShj0t09YnGKpFJkGXTDa0DsPXYcqltF9EFW70=; h=From:Date:Subject:References:In-Reply-To:To:Cc:From; b=i8wnmpMcHS9D/oF2ClPlOilsA5wPDz98P6QPOulHho7dvgIXxkxeR8+srKjCaeldy 8xa0jJoIh2NgUFOLh4s0DjP/bUb7b2H64srRxnF86BdQrkWJzlrJHGIdF3ccP0sA/i 8PhV12i9/Usuvgq+481cggxn6SLDQJhJOGiO96idjSjzZEuhjqassIbMWb8Fy/Jhkp bwHCgBQb/MEWbmytDe54xeKimzLoeVu+9GTGVUopWknx9Wfo5w0DrJw6n7CWc0RZ3Q V48/3xTt2t/JH8zKPW8wYH33t7wcAjz3BgA4EWrOQ4SDNQbB6s9WgWpt27HzohAlEh EETai2Hutax4w== Received: from localhost (unknown [84.232.140.93]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange ECDHE (prime256v1) server-signature RSA-PSS (4096 bits) server-digest SHA256) (No client certificate requested) (Authenticated sender: cristicc) by bali.collaboradmins.com (Postfix) with UTF8SMTPSA id B0D4A17E0E8D; Wed, 26 Mar 2025 11:19:59 +0100 (CET) From: Cristian Ciocaltea Date: Wed, 26 Mar 2025 12:19:51 +0200 Subject: [PATCH v3 02/15] drm/connector: hdmi: Add support for YUV420 format verification 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: <20250326-hdmi-conn-yuv-v3-2-294d3ebbb4b2@collabora.com> References: <20250326-hdmi-conn-yuv-v3-0-294d3ebbb4b2@collabora.com> In-Reply-To: <20250326-hdmi-conn-yuv-v3-0-294d3ebbb4b2@collabora.com> To: Maarten Lankhorst , Maxime Ripard , Thomas Zimmermann , David Airlie , Simona Vetter , Dave Stevenson , Dmitry Baryshkov , Dmitry Baryshkov Cc: kernel@collabora.com, dri-devel@lists.freedesktop.org, linux-kernel@vger.kernel.org X-Mailer: b4 0.14.2 Provide the necessary constraints verification in sink_supports_format_bpc() in order to support handling of YUV420 output format. Signed-off-by: Cristian Ciocaltea Reviewed-by: Maxime Ripard --- drivers/gpu/drm/display/drm_hdmi_state_helper.c | 39 +++++++++++++++++++++= ++-- 1 file changed, 36 insertions(+), 3 deletions(-) diff --git a/drivers/gpu/drm/display/drm_hdmi_state_helper.c b/drivers/gpu/= drm/display/drm_hdmi_state_helper.c index 45b154c8abb2cc731bf4be472e58815cf47463d4..eb284032ea794838f333ce63924= 3540fca91dbdb 100644 --- a/drivers/gpu/drm/display/drm_hdmi_state_helper.c +++ b/drivers/gpu/drm/display/drm_hdmi_state_helper.c @@ -3,6 +3,7 @@ #include #include #include +#include #include =20 #include @@ -407,6 +408,11 @@ sink_supports_format_bpc(const struct drm_connector *c= onnector, return false; } =20 + if (drm_mode_is_420_only(info, mode) && format !=3D HDMI_COLORSPACE_YUV42= 0) { + drm_dbg_kms(dev, "Mode can be only supported in YUV420 format.\n"); + return false; + } + switch (format) { case HDMI_COLORSPACE_RGB: drm_dbg_kms(dev, "RGB Format, checking the constraints.\n"); @@ -437,9 +443,36 @@ sink_supports_format_bpc(const struct drm_connector *c= onnector, return true; =20 case HDMI_COLORSPACE_YUV420: - /* TODO: YUV420 is unsupported at the moment. */ - drm_dbg_kms(dev, "YUV420 format isn't supported yet.\n"); - return false; + drm_dbg_kms(dev, "YUV420 format, checking the constraints.\n"); + + if (!(info->color_formats & DRM_COLOR_FORMAT_YCBCR420)) { + drm_dbg_kms(dev, "Sink doesn't support YUV420.\n"); + return false; + } + + if (!drm_mode_is_420(info, mode)) { + drm_dbg_kms(dev, "Mode cannot be supported in YUV420 format.\n"); + return false; + } + + if (bpc =3D=3D 10 && !(info->hdmi.y420_dc_modes & DRM_EDID_YCBCR420_DC_3= 0)) { + drm_dbg_kms(dev, "10 BPC but sink doesn't support Deep Color 30.\n"); + return false; + } + + if (bpc =3D=3D 12 && !(info->hdmi.y420_dc_modes & DRM_EDID_YCBCR420_DC_3= 6)) { + drm_dbg_kms(dev, "12 BPC but sink doesn't support Deep Color 36.\n"); + return false; + } + + if (bpc =3D=3D 16 && !(info->hdmi.y420_dc_modes & DRM_EDID_YCBCR420_DC_4= 8)) { + drm_dbg_kms(dev, "16 BPC but sink doesn't support Deep Color 48.\n"); + return false; + } + + drm_dbg_kms(dev, "YUV420 format supported in that configuration.\n"); + + return true; =20 case HDMI_COLORSPACE_YUV422: drm_dbg_kms(dev, "YUV422 format, checking the constraints.\n"); --=20 2.49.0