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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=1771246923; 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=E6/IL9T9r6JCufl0RYsNc7jJmCuMbPJaKhaRNoo53fQ=; b=FpBVMtkJwvPluuKs/sxzKjDlt1CbhDZFt4WkGb9BSe4LMlPQW1yoSMu69gTAt74y HpVAFcu5AdSRH1ubBHV+nepgFnJpdvIBDjRHU5DX4mp8uaN9D1PdaLLIxQ3qdSCjuJe 7weY5+F2NQaz25CVMfZb17kXtAL7ShwL1ChjauVc= Received: by mx.zohomail.com with SMTPS id 1771246921436134.4296104447676; Mon, 16 Feb 2026 05:02:01 -0800 (PST) From: Nicolas Frattaroli Date: Mon, 16 Feb 2026 14:01:17 +0100 Subject: [PATCH v8 03/20] drm: Add enum conversions for drm_color_format_enum MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: 7bit Message-Id: <20260216-color-format-v8-3-5722ce175dd5@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 , Marius Vlad X-Mailer: b4 0.14.3 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20260216_050235_314459_205D6B11 X-CRM114-Status: GOOD ( 10.70 ) 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 While the drm_color_format_enum enum and the hdmi_colorspace enum have similar values, they're not identical, and HDMI's enum is defined as per the HDMI standard. Meanwhile, each DRM_COLOR_FORMAT_* define has a corresponding drm_color_format_enum, which allows conversion from the bitshifted defines to the enum values. Implement conversion functions from DRM_COLOR_FORMAT bitshifted defines to drm_color_format_enum, and from hdmi_colorspace enum values to drm_color_format_enum enum values. In both conversions, an unexpected input results in a DRM_COLOR_FORMAT_ENUM_INVALID result. The functions are kept inline __pure to give the compiler maximum freedom to do as it pleases. Co-developed-by: Marius Vlad Signed-off-by: Marius Vlad Signed-off-by: Nicolas Frattaroli --- include/drm/drm_connector.h | 53 +++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 53 insertions(+) diff --git a/include/drm/drm_connector.h b/include/drm/drm_connector.h index 18bd875b6918..886defdd069b 100644 --- a/include/drm/drm_connector.h +++ b/include/drm/drm_connector.h @@ -2694,6 +2694,59 @@ int drm_connector_attach_color_format_property(struct drm_connector *connector); const char *drm_get_color_format_name(enum drm_color_format_enum color_fmt); +/** + * drm_color_format_to_enum - convert a single DRM_COLOR_FORMAT\_ to enum + * @fmt: One of the possible DRM_COLOR_FORMAT\_ values + * + * Converts a single DRM_COLOR_FORMAT\_ value to a corresponding + * &enum drm_color_format_enum value. Bitmasks of multiple DRM_COLOR_FORMAT\_ + * values are not supported, as they would not map to a single enum value. + * + * Returns converted enum value on success, or %DRM_COLOR_FORMAT_ENUM_INVALID on + * failure. + */ +static inline enum drm_color_format_enum __pure +drm_color_format_to_enum(u32 fmt) +{ + switch (fmt) { + case DRM_COLOR_FORMAT_RGB444: + return DRM_COLOR_FORMAT_ENUM_RGB444; + case DRM_COLOR_FORMAT_YCBCR444: + return DRM_COLOR_FORMAT_ENUM_YCBCR444; + case DRM_COLOR_FORMAT_YCBCR422: + return DRM_COLOR_FORMAT_ENUM_YCBCR422; + case DRM_COLOR_FORMAT_YCBCR420: + return DRM_COLOR_FORMAT_ENUM_YCBCR420; + default: + return DRM_COLOR_FORMAT_ENUM_INVALID; + } +} + +/** + * drm_color_format_enum_from_hdmi_colorspace - convert hdmi_colorspace enum to + * drm_color_format_enum + * @fmt: The &enum hdmi_colorspace to convert + * + * Returns the converted result on success, or %DRM_COLOR_FORMAT_ENUM_INVALID on + * failure. + */ +static inline enum drm_color_format_enum __pure +drm_color_format_enum_from_hdmi_colorspace(enum hdmi_colorspace fmt) +{ + switch (fmt) { + case HDMI_COLORSPACE_RGB: + return DRM_COLOR_FORMAT_ENUM_RGB444; + case HDMI_COLORSPACE_YUV444: + return DRM_COLOR_FORMAT_ENUM_YCBCR444; + case HDMI_COLORSPACE_YUV422: + return DRM_COLOR_FORMAT_ENUM_YCBCR422; + case HDMI_COLORSPACE_YUV420: + return DRM_COLOR_FORMAT_ENUM_YCBCR420; + default: + return DRM_COLOR_FORMAT_ENUM_INVALID; + } +} + /** * drm_for_each_connector_iter - connector_list iterator macro * @connector: &struct drm_connector pointer used as cursor -- 2.53.0