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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=1771246937; 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=XJQUiMBk6drlEqyVcvn5t6omt1siA1VhQ5FW6igxkp4=; b=SLYyzIpp/sDAePPdKa/wbGGQOZM9CfSx/pvjyQIgBSoN8Pxl3DqRdNaqJGUV/DNK Oihkj9X3YL8u24M5muBRHoLG6BheY3XHc86QPiVrI1DSNt6F0SwvOfLALVXVqmeX+Zq zZhN/9nItYLeiK66SX9pkaNyNMjk9eC6Qa2EgHFw= Received: by mx.zohomail.com with SMTPS id 1771246935363351.37459512313205; Mon, 16 Feb 2026 05:02:15 -0800 (PST) From: Nicolas Frattaroli Date: Mon, 16 Feb 2026 14:01:19 +0100 Subject: [PATCH v8 05/20] drm/display: hdmi-state-helper: Act on color format DRM property MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: 7bit Message-Id: <20260216-color-format-v8-5-5722ce175dd5@collabora.com> References: <20260216-color-format-v8-0-5722ce175dd5@collabora.com> In-Reply-To: <20260216-color-format-v8-0-5722ce175dd5@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 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 X-Mailer: b4 0.14.3 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20260216_050249_753176_69EB7672 X-CRM114-Status: GOOD ( 12.43 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org 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_color_format_enum to an hdmi_colorspace enum value. Auto is translated to RGB, and a fallback to YUV420 is only performed if the original color format was auto. Signed-off-by: Nicolas Frattaroli --- drivers/gpu/drm/display/drm_hdmi_state_helper.c | 28 +++++++++++++++++++++++-- 1 file changed, 26 insertions(+), 2 deletions(-) diff --git a/drivers/gpu/drm/display/drm_hdmi_state_helper.c b/drivers/gpu/drm/display/drm_hdmi_state_helper.c index a1d16762ac7a..3ba752200984 100644 --- a/drivers/gpu/drm/display/drm_hdmi_state_helper.c +++ b/drivers/gpu/drm/display/drm_hdmi_state_helper.c @@ -649,10 +649,34 @@ hdmi_compute_config(const struct drm_connector *connector, unsigned int max_bpc = clamp_t(unsigned int, conn_state->max_bpc, 8, connector->max_bpc); + enum hdmi_colorspace fmt; int ret; - ret = hdmi_compute_format_bpc(connector, conn_state, mode, max_bpc, - HDMI_COLORSPACE_RGB); + switch (conn_state->color_format) { + case DRM_COLOR_FORMAT_ENUM_AUTO: + case DRM_COLOR_FORMAT_ENUM_RGB444: + fmt = HDMI_COLORSPACE_RGB; + break; + case DRM_COLOR_FORMAT_ENUM_YCBCR444: + fmt = HDMI_COLORSPACE_YUV444; + break; + case DRM_COLOR_FORMAT_ENUM_YCBCR422: + fmt = HDMI_COLORSPACE_YUV422; + break; + case DRM_COLOR_FORMAT_ENUM_YCBCR420: + fmt = HDMI_COLORSPACE_YUV420; + break; + default: + drm_dbg_kms(connector->dev, "HDMI does not support color format '%s'.\n", + drm_get_color_format_name(conn_state->color_format)); + return -EINVAL; + } + + ret = hdmi_compute_format_bpc(connector, conn_state, mode, max_bpc, fmt); + + if (conn_state->color_format != DRM_COLOR_FORMAT_ENUM_AUTO) + return ret; + if (ret) { if (connector->ycbcr_420_allowed) { ret = hdmi_compute_format_bpc(connector, conn_state, -- 2.53.0