From nobody Thu Apr 9 23:24:44 2026 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 7A4E23E0C55; Thu, 9 Apr 2026 15:47:00 +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=1775749625; cv=pass; b=GikPhzszzVueQ9BlgbQxYP0ppLsBF6mrb49nw4HHz1T7gqjJkHOWR8sFdl3TmlCfNS8OWyjY9sSXcO00JaRMX4DFG96Fp2Uqn0YTWPZcN80/dallczTyNCcWsIztdMxY+/ex/MU6mCCijYb1+ihMe9f+LgRcsxj4rxoDME7HQI0= ARC-Message-Signature: i=2; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1775749625; c=relaxed/simple; bh=mJBUCMK5Y2SpBvU+a7vlREeo/7xI/oEsYcDUta2SYgk=; h=From:Date:Subject:MIME-Version:Content-Type:Message-Id:References: In-Reply-To:To:Cc; b=J3MLxtBAejgRXwREPgugvBC0Ycy6KPJTKtlcBqUXPs5QYAXTPEBFcDM6pZUJA4RvbgY+cypLHkQs0fWDUv2n6TLU3Ypyy4jot0GSepLJuXiVtdiicC3pfv9iKuqQRIsY+52us5CLbwkAcKz0oKGXxB28tcrdtXZChFaBBvMIZgk= 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=LPvr8R+9; 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="LPvr8R+9" ARC-Seal: i=1; a=rsa-sha256; t=1775749568; cv=none; d=zohomail.com; s=zohoarc; b=fkz2gzLau26A/D5RyFq86S9AqQs1OKisWrwj0HnvS6lzDc5+9WXMkvPm6LZDyfC3p8WPImZCbw4SpUI3sVNNMRXNGoaDVzsemmpBcBJ7umKwithmAIsAGU7ZO8nRFaOorXvDChbVSpPz8C4j/B+7kE21TEAsOBegKVgArDJSSPM= ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=zohomail.com; s=zohoarc; t=1775749568; 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=5k1vlW62iXZjcOaFsSXyeVWlBMQFrsYlNjKb9M5MyLE=; b=CUS9fALyJ6Ak04Fnkh3uHzA4F+yYpuwr9LbRTUVZpIyHGOBEb2MBkB36pyEGtmv13S4Xqz1v+niAILIH3rNYrnXVfPfBof3d/OoW0P7/ExEyIuTREUVV1yZTjHd1ktUg6pQLPRaIjQIoRJmG5NEO3G6AACj9i8LFpOcyfNPB70U= 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=1775749568; 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=5k1vlW62iXZjcOaFsSXyeVWlBMQFrsYlNjKb9M5MyLE=; b=LPvr8R+9Nr1XXl6hhqZC8/TgPK41i+UoXkl1zRICsUbtr5v+6JuUiNA9YITF384f XqBw5weXZ0baFDyMjQWDUXDBSvkFqO65/w69s42wdZaA65yrHpCh1n+mHCIICS1hOoV 0mn32NLrWcH94yo+sjsIyC9jyMN1592PNt5JIzuY= Received: by mx.zohomail.com with SMTPS id 17757495659461009.4108193899488; Thu, 9 Apr 2026 08:46:05 -0700 (PDT) From: Nicolas Frattaroli Date: Thu, 09 Apr 2026 17:44:56 +0200 Subject: [PATCH v12 06/25] drm/display: hdmi-state-helper: Act on color format DRM 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: <20260409-color-format-v12-6-ce84e1817a27@collabora.com> References: <20260409-color-format-v12-0-ce84e1817a27@collabora.com> In-Reply-To: <20260409-color-format-v12-0-ce84e1817a27@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 , Jonathan Corbet , Shuah Khan 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, linux-doc@vger.kernel.org, Nicolas Frattaroli , Dmitry Baryshkov X-Mailer: b4 0.15.1 With the introduction of the "color format" DRM property, which allows userspace to request a specific color format, the HDMI state helper should implement this. Implement it by translating the requested drm_connector_color_format to a drm_output_color_format enum value as per the logic HDMI should use for this: Auto is translated to RGB, and a fallback to YUV420 is only performed if the original color format was auto. Reviewed-by: Dmitry Baryshkov Reviewed-by: Maxime Ripard Signed-off-by: Nicolas Frattaroli --- drivers/gpu/drm/display/drm_hdmi_state_helper.c | 31 +++++++++++++++++++++= ++++ 1 file changed, 31 insertions(+) diff --git a/drivers/gpu/drm/display/drm_hdmi_state_helper.c b/drivers/gpu/= drm/display/drm_hdmi_state_helper.c index a0d88701d236..954f8b2973fc 100644 --- a/drivers/gpu/drm/display/drm_hdmi_state_helper.c +++ b/drivers/gpu/drm/display/drm_hdmi_state_helper.c @@ -670,8 +670,39 @@ hdmi_compute_config(const struct drm_connector *connec= tor, unsigned int max_bpc =3D clamp_t(unsigned int, conn_state->max_bpc, 8, connector->max_bpc); + enum drm_output_color_format fmt; int ret; =20 + if (conn_state->color_format !=3D DRM_CONNECTOR_COLOR_FORMAT_AUTO) { + switch (conn_state->color_format) { + case DRM_CONNECTOR_COLOR_FORMAT_AUTO: + drm_warn(connector->dev, "AUTO format in non-AUTO path.\n"); + fallthrough; + case DRM_CONNECTOR_COLOR_FORMAT_RGB444: + fmt =3D DRM_OUTPUT_COLOR_FORMAT_RGB444; + break; + case DRM_CONNECTOR_COLOR_FORMAT_YCBCR444: + fmt =3D DRM_OUTPUT_COLOR_FORMAT_YCBCR444; + break; + case DRM_CONNECTOR_COLOR_FORMAT_YCBCR422: + fmt =3D DRM_OUTPUT_COLOR_FORMAT_YCBCR422; + break; + case DRM_CONNECTOR_COLOR_FORMAT_YCBCR420: + fmt =3D DRM_OUTPUT_COLOR_FORMAT_YCBCR420; + break; + default: + drm_dbg_kms(connector->dev, "HDMI does not support color format '%d'.\n= ", + conn_state->color_format); + return -EINVAL; + } + + return hdmi_compute_format_bpc(connector, conn_state, mode, max_bpc, fmt= ); + } + + /* + * For %DRM_CONNECTOR_COLOR_FORMAT_AUTO, try RGB first, and fall back + * to the less bandwidth-intensive YCBCR420 if RGB fails. + */ ret =3D hdmi_compute_format_bpc(connector, conn_state, mode, max_bpc, DRM_OUTPUT_COLOR_FORMAT_RGB444); if (ret) { --=20 2.53.0