From patchwork Wed Mar 26 10:19:56 2025 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Cristian Ciocaltea X-Patchwork-Id: 14029931 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from gabe.freedesktop.org (gabe.freedesktop.org [131.252.210.177]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id DDB7BC36010 for ; Wed, 26 Mar 2025 10:20:16 +0000 (UTC) Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id 0737B10E698; Wed, 26 Mar 2025 10:20:16 +0000 (UTC) Authentication-Results: gabe.freedesktop.org; dkim=pass (2048-bit key; unprotected) header.d=collabora.com header.i=@collabora.com header.b="EgG127FC"; dkim-atps=neutral Received: from bali.collaboradmins.com (bali.collaboradmins.com [148.251.105.195]) by gabe.freedesktop.org (Postfix) with ESMTPS id E32D010E696 for ; Wed, 26 Mar 2025 10:20:06 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=collabora.com; s=mail; t=1742984405; bh=kWYvxqjKorV2NXGSW+7sreFvakOrQdavOIvZdsoGzbo=; h=From:Date:Subject:References:In-Reply-To:To:Cc:From; b=EgG127FC9lgj/sxZa/b/xS6vEnHEOjjXci2q1HlF+HA9b7ZOPJnvS/+wgapN++Vul LWe7beitKH91r+WN0oq9BBw8X2y0Ng3GAN6tYb7EEKCvM0WgaJe/C7AbhH7EFkcwpp BUmbvmez2o6svAIQe+WgxjK0mZY5lBlUzaaCKsjhfggZI2DgvAST8ijKIcEgXyHAYw EaWSUHO34NadBdMPQFo3T5u6BqTlx4O5sVsTR5g+77NWJyyb6yLoc1+iln4IFuwUE5 SVPwS9Z9IdVHNJijBl7wNXbpn6BHWGXXZu9qZ/pbXUy1mg8EX523yVeZhaH7BcGa3e Yrbmz3VNSY63Q== 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 5641D17E0B9D; Wed, 26 Mar 2025 11:20:05 +0100 (CET) From: Cristian Ciocaltea Date: Wed, 26 Mar 2025 12:19:56 +0200 Subject: [PATCH v3 07/15] drm/connector: hdmi: Use YUV420 output format as an RGB fallback MIME-Version: 1.0 Message-Id: <20250326-hdmi-conn-yuv-v3-7-294d3ebbb4b2@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 X-BeenThere: dri-devel@lists.freedesktop.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Direct Rendering Infrastructure - Development List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: dri-devel-bounces@lists.freedesktop.org Sender: "dri-devel" Try to make use of YUV420 when computing the best output format and RGB cannot be supported for any of the available color depths. Signed-off-by: Cristian Ciocaltea --- drivers/gpu/drm/display/drm_hdmi_state_helper.c | 10 ++++++++++ 1 file changed, 10 insertions(+) diff --git a/drivers/gpu/drm/display/drm_hdmi_state_helper.c b/drivers/gpu/drm/display/drm_hdmi_state_helper.c index 6de0abb15ecb36fd4eb98725e2a3835e5e0db134..3859600c6af4a79f30858adfc9f9a710dfe561a5 100644 --- a/drivers/gpu/drm/display/drm_hdmi_state_helper.c +++ b/drivers/gpu/drm/display/drm_hdmi_state_helper.c @@ -650,7 +650,17 @@ hdmi_compute_config(const struct drm_connector *connector, ret = hdmi_compute_format_bpc(connector, conn_state, mode, max_bpc, HDMI_COLORSPACE_RGB); + if (!ret) + return 0; + if (!connector->ycbcr_420_allowed) { + drm_dbg_kms(connector->dev, + "YUV420 output format not allowed for connector.\n"); + return -EINVAL; + } + + ret = hdmi_compute_format_bpc(connector, conn_state, mode, max_bpc, + HDMI_COLORSPACE_YUV420); return ret; }