From mboxrd@z Thu Jan 1 00:00:00 1970 Authentication-Results: smtp.subspace.kernel.org; arc=pass header.oldest-pass=0 smtp.remote-ip=136.143.188.112 ARC-Seal: i=2; d=subspace.kernel.org; s=arc20261015; a=rsa-sha256; cv=pass; t=1793894171; b=vKt1uC/Ey3QqADCDffNMG0uimwFkhDN1lUCpzxMFkZCiS9HAMuKAkCcUhvvo+uFY1Eo7 85cj1AKK1SoGJQUdN15ZbVv0y0/0zcT1E5wFsOIC59L4D+eQuTUQvkwUJuPtk+lz+Y9Mt BWQY12qcq40jdo0s0E3GkSZ25mgbHIr7pgVyFLVl8zzsz50LtewnFWK3kzt6mGWysURnr hm9VmfeHAJQdYzUEy6DCeAw8EKtZaIRFQqY3n46OhjPD3CbgcFAcqOJzhLe1UXDP/3Ve9 VMlMSXdwIHY3qtEKXGK7d7hm9rDAJNqzZohe5Alb22snlhTQReiTt6uM2jCzcwNG0xw== ARC-Message-Signature: i=2; d=subspace.kernel.org; s=arc20261015; a=rsa-sha256; c=relaxed/relaxed; t=1793894171; h=DMARC-Filter:DKIM-Signature:Received:From:Date:Subject:MIME-Version: Content-Type:Content-Transfer-Encoding:Message-Id:References: In-Reply-To:To:Cc:X-Mailer; bh=ukJa6i38H9O+0wEvhzaIwEJgt1m1SU43w7laRjQC3S0=; b=qNK8qaUV+K/ZVP0OjbbdFVuNMz6rmfjQMownvXHRU6wirrNWINJxox3JFYI04bAgkBb+ If+vykuFsOI9rbgK4WwtITL+MWB1MyQM6RbdlmUB1XYuJCNCCl8fG7v6WpjlIs6lz1FEi UMGD3hJ6rsb3YCVuW1JwLh88rnfewqxcfKywTw6MUV+Vj4/QQWTqt0pgvM0yIvZH86yrF RG7f94GBDhYIn8VQpi/UgPVtnMB1+btor28txIsDetim82qke9t4EWOheOH7dHC2f+0iQ SE3j3+K4fbAnAcmVOAaKyy4eH4SQJPQx2/TfRt1499FRKqI1aSbrGdAziOto39hiR3A== ARC-Authentication-Results: i=2; smtp.subspace.kernel.org; dmarc=pass header.from=collabora.com; spf=pass smtp.mailfrom=collabora.com; dkim=pass header.d=collabora.com header.i=@collabora.com header.a=rsa-sha256 header.s=zohomail header.b=Dzb6nTlb; arc=pass header.oldest-pass=0 smtp.remote-ip=136.143.188.112 Received: from sender4-pp-f112.zoho.com (sender4-pp-f112.zoho.com [136.143.188.112]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature ECDSA (prime256v1)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 7C5CC606E56D; Thu, 5 Nov 2026 15:56:10 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.4.2 smtp.subspace.kernel.org 7C5CC606E56D 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, unprotected) header.d=collabora.com header.i=@collabora.com header.a=rsa-sha256 header.s=zohomail header.b=Dzb6nTlb ARC-Seal: i=1; a=rsa-sha256; t=1793894061; cv=none; d=zohomail.com; s=zohoarc; b=EW0sBlhzbHJ+wcfTSf8BDGMsFkFf+lWXVIeMOyRMFwFc2OSKdkTST9inc7wDI62Gq85VJu6jLi/qHtz+isluoHauLmp1NnqTVvQP5cmzB7QWIDBPymI30JJlLPb0dUWUJ9oCijWBtW/NtzL+n/O9ptH9Ks88w+BXEr4KBx8cckY= ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=zohomail.com; s=zohoarc; t=1793894061; h=Content-Type:Content-Transfer-Encoding:Cc:Cc:Date:Date:From:From:In-Reply-To:MIME-Version:Message-ID:Subject:Subject:To:To:Message-Id:Reply-To; bh=ukJa6i38H9O+0wEvhzaIwEJgt1m1SU43w7laRjQC3S0=; b=dzhJtMri+kRkSHDTwBhQwtHCy32MMfMIO60HvpLZykHDcnJBAH8P1GL+5Tj/UoARlgcaAZwC5Z4pWPboZXKnxuQJ6WZMBGOxv1OJfxSHcYK7ry2zJZWTkkpeedRosQ4/ywT4tzw6Gf+rFvCl8EdKVnqpllaGNG5/O+tyHwiHH64= 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: a=rsa-sha256; b=Dzb6nTlbY4hOx6m/14LuyGTVgvB8JkhEmmR3LYmttlRqn8z6QBJCxgc/T50AgC6+AjkDaDFwdClp/fb7MPPtKEabTobz7CE8PcJH433+QsBnozFVLl0bI8rODWFRogvBc5Aixrpw/PHdpsbPDMpvRaIiRKsFSqYjxnEAc5EWW/Y=; c=relaxed/relaxed; s=zohomail; d=collabora.com; v=1; bh=ukJa6i38H9O+0wEvhzaIwEJgt1m1SU43w7laRjQC3S0=; h=Content-Description:Content-ID:Content-Type:Content-Transfer-Encoding:Cc:Date:From:In-Reply-To:List-Subscribe:List-Post:List-Owner:List-Id:List-Archive:List-Help:List-Unsubscribe:MIME-Version:Message-ID:Resent-Sender:Resent-Cc:Resent-Date:Resent-To:Reply-To:Resent-Message-ID:Resent-From:Sender:Subject:To:Date:From:Message-Id:Reply-To:Subject:To:Cc; Received: by smtp.zohomail.com with SMTPS id 1793894060390792.41475105125; Thu, 5 Nov 2026 07:54:20 -0800 (PST) From: Nicolas Frattaroli Date: Thu, 05 Nov 2026 16:52:08 +0100 Subject: [PATCH v2 17/27] drm/connector: Add "Media" VRR display mode for QMS X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Post: List-Help: List-Subscribe: List-Unsubscribe: List-Owner: Precedence: list MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: 7bit Message-Id: <20261105-vrr-limiter-uapi-v2-17-55f4215be2c2@collabora.com> References: <20261105-vrr-limiter-uapi-v2-0-55f4215be2c2@collabora.com> In-Reply-To: <20261105-vrr-limiter-uapi-v2-0-55f4215be2c2@collabora.com> To: Xaver Hugl , Vidith Madhu , "Borah, Chaitanya Kumar" , Leo Li , Harry Wentland , Fangzhi Zuo , Daniel Stone , Maarten Lankhorst , Maxime Ripard , Thomas Zimmermann , David Airlie , Simona Vetter , Helge Deller , Andrzej Hajda , Neil Armstrong , Robert Foss , Laurent Pinchart , Jonas Karlman , Jernej Skrabec , Luca Ceresoli , Sandy Huang , =?utf-8?q?Heiko_St=C3=BCbner?= , Andy Yan , =?utf-8?q?Michel_D=C3=A4nzer?= Cc: dri-devel@lists.freedesktop.org, linux-kernel@vger.kernel.org, linux-fbdev@vger.kernel.org, linux-rockchip@lists.infradead.org, linux-arm-kernel@lists.infradead.org, kernel@collabora.com, Derek Foreman , wayland-devel@lists.freedesktop.org, Nicolas Frattaroli X-Mailer: b4 0.15.2 HDMI includes a feature called "Quick Media Switching", or QMS for short, which builds upon the existing VRR to allow for quick switching between a select few common frame rates. Add a new VRR display mode, "VRR_DISPLAY_MODE_MEDIA", to the vrr_display_mode connector property, in order to expose support for this. Additionally, add a boolean flag to the connector's HDMI sub-struct with which source-side support for QMS can be indicated, as well as the QMS tfr byte to the HDMI state sub-struct. Signed-off-by: Nicolas Frattaroli --- drivers/gpu/drm/drm_connector.c | 6 ++++++ include/drm/drm_connector.h | 14 ++++++++++++++ 2 files changed, 20 insertions(+) diff --git a/drivers/gpu/drm/drm_connector.c b/drivers/gpu/drm/drm_connector.c index 21222214a843..f7d619926e2d 100644 --- a/drivers/gpu/drm/drm_connector.c +++ b/drivers/gpu/drm/drm_connector.c @@ -1456,6 +1456,7 @@ DRM_ENUM_NAME_FN(drm_get_tv_mode_name, drm_tv_mode_enum_list) static const struct drm_prop_enum_list drm_vrr_mode_enum_list[] = { { VRR_DISPLAY_MODE_GAME, "Game" }, { VRR_DISPLAY_MODE_OFF, "Off" }, + { VRR_DISPLAY_MODE_MEDIA, "Media" }, }; DRM_ENUM_NAME_FN(drm_get_vrr_mode_name, drm_vrr_mode_enum_list) @@ -2593,6 +2594,11 @@ EXPORT_SYMBOL(drm_mode_create_scaling_mode_property); * - Game - set display to game mode if display supports it, * regardless of CRTC state * - Off - set display to VRR disabled mode, regardless of CRTC state + * - Media - a "media" VRR mode that only supports a select number of + * common media refresh rates as fixed targets, but does so with + * possibly better display-side processing. In the HDMI display + * protocol, this is QMS (Quick Media Switching), though the mode + * enum itself is vendor-agnostic * * VRR Limiter/Target Properties * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ diff --git a/include/drm/drm_connector.h b/include/drm/drm_connector.h index 4801bb2769e1..41f272afbb1e 100644 --- a/include/drm/drm_connector.h +++ b/include/drm/drm_connector.h @@ -829,6 +829,8 @@ enum vrr_display_mode { VRR_DISPLAY_MODE_GAME = 0, /** @VRR_DISPLAY_MODE_OFF: Turn off VRR on the display */ VRR_DISPLAY_MODE_OFF, + /** @VRR_DISPLAY_MODE_MEDIA: Protocol-agnostic fixed rate media mode */ + VRR_DISPLAY_MODE_MEDIA, /** @VRR_DISPLAY_MODE_COUNT: Sentinel, not a valid mode, keep last */ VRR_DISPLAY_MODE_COUNT }; @@ -1241,6 +1243,12 @@ struct drm_connector_hdmi_state { * deliberately not requested by the helper. */ bool scrambler_needed; + + /** + * @qms_tfr_byte: Target frame rate byte for HDMI QMS, or 0 if QMS is + * not in use. + */ + u8 qms_tfr_byte; }; /** @@ -2270,6 +2278,12 @@ struct drm_connector_hdmi { */ bool scrambler_enabled; + /** + * @qms_supported: Whether the connector supports HDMI Quick Media + * Switching (QMS) on the source side, irrespective of display support. + */ + bool qms_supported; + /** * @scdc_work: Work item currently used to monitor sink-side scrambling * status and retry setup if the sink resets it. -- 2.56.0