From nobody Mon Feb 9 22:19:56 2026 Received: from mx0a-0031df01.pphosted.com (mx0a-0031df01.pphosted.com [205.220.168.131]) (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 01BD31FDE11 for ; Mon, 7 Apr 2025 15:11:22 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=205.220.168.131 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1744038684; cv=none; b=eF3IzE7kcQCwqMJU8rAKXESyLnK+WZR09HChHKaB48oP6hv4jn+NNNpp0RpQFTYtxBg6f0Qp3wBkWpnOzwdcyLKcHPVyg2+m1RBkeyK+1locysJhjsW2sJd+9rrz4zKKe0CeWhw+cz7QYlmNshhufVcfCy0guWSn61Gf/V7Vnak= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1744038684; c=relaxed/simple; bh=uklYweWBlwLbC6gTQ6PCbwQsVuPXcE9aRj3J6MFYXSs=; h=From:Date:Subject:MIME-Version:Content-Type:Message-Id:References: In-Reply-To:To:Cc; b=aZLMnGEcaJRjiqXDCUcRb1hJ+y8dy8hM0AGOstKJIHwYP4DzNpQw7saLiP8rvHOaPgbabmbV/qussgQDaBqiypb+TJ5qJELSs0AaKYape/5oMGL65asz3bWJ3bEEhkZmx3D0s7SYl9U9U0S8QJ+fZsP1NIyEk7fJNN5rh4mJwDM= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=pass (p=reject dis=none) header.from=oss.qualcomm.com; spf=pass smtp.mailfrom=oss.qualcomm.com; dkim=pass (2048-bit key) header.d=qualcomm.com header.i=@qualcomm.com header.b=D85nAQ95; arc=none smtp.client-ip=205.220.168.131 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=reject dis=none) header.from=oss.qualcomm.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=oss.qualcomm.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=qualcomm.com header.i=@qualcomm.com header.b="D85nAQ95" Received: from pps.filterd (m0279865.ppops.net [127.0.0.1]) by mx0a-0031df01.pphosted.com (8.18.1.2/8.18.1.2) with ESMTP id 5378eHgI011554 for ; Mon, 7 Apr 2025 15:11:22 GMT DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=qualcomm.com; h= cc:content-transfer-encoding:content-type:date:from:in-reply-to :message-id:mime-version:references:subject:to; s=qcppdkim1; bh= G1ae8VxXVqStJkqbSuwALnEc5YS2/T7OPX6wl6TCcAI=; b=D85nAQ95l3UHoNQV MQ+PrKqsPZ9lDJDJmzgH7fU+CZv/qNS1ErTP5Kk+tHnT0HSRWGb9Xd/F1SB7gzZm u5qkXhz9grtrCFz+luEs8lYelv23mX/GqfFQTQ3286nNU0LQ8uHHErNL2yEfJg+5 Av10UIahJrhi1g6q1OWCwiClEoREdOsGSBaueIP1Q8a4hVkOGfABY4PuAEYAF7Qi 86PH96RbPjsC+fbrj0Rsb3EKFDMtcID9r2mCW57pAu+OCvfTe/5ChVQU4NNxLjfi ptY+nGRS+eIRoTa7bHMynjqom8SxLmyAS52BamvXbqjnSyp9rbqMPHfiMVE6230T 9eUUew== Received: from mail-qk1-f200.google.com (mail-qk1-f200.google.com [209.85.222.200]) by mx0a-0031df01.pphosted.com (PPS) with ESMTPS id 45twd2mnem-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128 verify=NOT) for ; Mon, 07 Apr 2025 15:11:21 +0000 (GMT) Received: by mail-qk1-f200.google.com with SMTP id af79cd13be357-7c5f3b94827so831269885a.0 for ; Mon, 07 Apr 2025 08:11:21 -0700 (PDT) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1744038680; x=1744643480; h=cc:to:in-reply-to:references:message-id:content-transfer-encoding :mime-version:subject:date:from:x-gm-message-state:from:to:cc :subject:date:message-id:reply-to; bh=G1ae8VxXVqStJkqbSuwALnEc5YS2/T7OPX6wl6TCcAI=; b=BpNs4SkFzn1FCeApHCJoDMvYJBPlNIVZ4nuKgyCu0fzRYB0I6Rg53WIvpxKrg6J0p4 WblTSIDqT7b7c6KtOkw3+78fLa8RUhp02LQYqcdayiAXf9w6eMXZJougKRQ1FPPpKMy9 V15UdTEzi8+4/sIeFzoLhmAFHMrAUqaZnAtd+r13f9zT2ppSMxlaEO8W51OH2i+J4SvD xeTZCqdNvlF6yNQR+AJd3wNXHgQQSQqYBVK9JdwvQKyi48ds4SvdHZSx9Czay7/fBNcR O1QMOVdQDjhxWSTnL6ou/+jp4jUF5tVKNPlFdcTF6Bzg1Vs7k9n2ImVG/Dg6lR5MhdUa BQsg== X-Forwarded-Encrypted: i=1; AJvYcCU3ChzpauolowS/MQ7fueNmsX3X7boRr3sS7o/2NY18NtQ5HnEN9AkjYed0TxwmrYcqnlNuZP3QtZTzxqA=@vger.kernel.org X-Gm-Message-State: AOJu0YythBP53/ykSEsotpAiOIMKZhdt8KqKNO2Xywti+GPe2FrntwoV qD8Er+kX97695LZj+b7RLjw6k4ahtFg5VU/TglvOit++S/FQ6Q6FnlsCufbnqMarC5oZhrkGTUl LYUcenl9VmZBDWs4oQk8FHz0pWIotLv/L8ep/xgH8kYgcIcntpOH/rYATa1HsG1s= X-Gm-Gg: ASbGncvJT7wfcVfPqld3iSTSgagHQr6xJ1xskisp1VXhG/0iK6a8YMyxSP0+vhbwwxk sXHbo5rscceAYl546Gr1A80UoMFZDcjN7YSE0k67Fn1JyxWB3frxWLf0n1qLbcWkUIwQehh2rVc 8kQuf7aWOFgdOpCODRF8rG3BPDLJ21dswv+pwCC1jP72wU93vEIa3+xLf+oQ4fwwQbFcI5ZYZO3 M+R+8LMZGnH/lY52OcIE3xIHMugz5X97hE7d7gu9Mb3rf39tq0XevU7gNPjhHwoYkcXcR76o1iJ St0Pthp+5HxnkejtSpLDJPlNEssCJNgydjH+OMNUIYuOtco0DzZ3B+rd0fjHC39ZV92YkOIT6yY 0Z11mfXPgM3j2P7KSorFHy+ynVp5T X-Received: by 2002:a05:620a:1985:b0:7c7:65fa:674e with SMTP id af79cd13be357-7c774d254f5mr2058155585a.1.1744038680435; Mon, 07 Apr 2025 08:11:20 -0700 (PDT) X-Google-Smtp-Source: AGHT+IF9FXJgKvDLCUZePpUDFSKDRydHaWSVNRxhoLmQaAx1/qkuqar4lsuiXVZFiVRaSsavpRwuAQ== X-Received: by 2002:a05:620a:1985:b0:7c7:65fa:674e with SMTP id af79cd13be357-7c774d254f5mr2058149785a.1.1744038680064; Mon, 07 Apr 2025 08:11:20 -0700 (PDT) Received: from umbar.lan (2001-14ba-a0c3-3a00-264b-feff-fe8b-be8a.rev.dnainternet.fi. [2001:14ba:a0c3:3a00:264b:feff:fe8b:be8a]) by smtp.gmail.com with ESMTPSA id 2adb3069b0e04-54c1e635becsm1312572e87.127.2025.04.07.08.11.17 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Mon, 07 Apr 2025 08:11:17 -0700 (PDT) From: Dmitry Baryshkov Date: Mon, 07 Apr 2025 18:11:06 +0300 Subject: [PATCH v5 09/11] drm/display: bridge-connector: hook in CEC notifier support 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: <20250407-drm-hdmi-connector-cec-v5-9-04809b10d206@oss.qualcomm.com> References: <20250407-drm-hdmi-connector-cec-v5-0-04809b10d206@oss.qualcomm.com> In-Reply-To: <20250407-drm-hdmi-connector-cec-v5-0-04809b10d206@oss.qualcomm.com> To: Maarten Lankhorst , Maxime Ripard , Thomas Zimmermann , David Airlie , Simona Vetter , Dave Stevenson , =?utf-8?q?Ma=C3=ADra_Canal?= , Raspberry Pi Kernel Maintenance , Andrzej Hajda , Neil Armstrong , Robert Foss , Laurent Pinchart , Jonas Karlman , Jernej Skrabec Cc: dri-devel@lists.freedesktop.org, linux-kernel@vger.kernel.org, Dmitry Baryshkov X-Mailer: b4 0.14.2 X-Developer-Signature: v=1; a=openpgp-sha256; l=3887; i=dmitry.baryshkov@oss.qualcomm.com; h=from:subject:message-id; bh=uklYweWBlwLbC6gTQ6PCbwQsVuPXcE9aRj3J6MFYXSs=; b=owEBbQGS/pANAwAKAYs8ij4CKSjVAcsmYgBn8+sEr/nW4cyUp9iMLeFQl1VURYW4LGyPfC++A MYRcNOfR5GJATMEAAEKAB0WIQRMcISVXLJjVvC4lX+LPIo+Aiko1QUCZ/PrBAAKCRCLPIo+Aiko 1TmxCACPf5vMjXdlaY4Kj2n0X93HdTHmJPPW+ZG1bU3vDa/otnWjg19X+oZJIW3rX7n7SexAGhe jg42xhJto/hQ/f3346I4G7qYbJ1aX9nJ/GzEgwlvBNhvUjnMMvzGJCKd6gl5b/hu+jIITEhbaG4 89Y8hpkH8205JXdWjalqCPyidHIuqeHDxfZF5k1npM0Ay/RLh3NAM2IiJF9YL349StGekracFV+ hj9i/16VPdPbBGUA4RvrsgjY5POuuvNHxtJOuzBnQY5zmMeZHAer1MM0YyWv2nsuy9BNMkOLL/1 vZf8WQOM54BgaRV2jo+38ycnEGWq0vLIOwYbN1s8ub3Z+gZ3 X-Developer-Key: i=dmitry.baryshkov@oss.qualcomm.com; a=openpgp; fpr=8F88381DD5C873E4AE487DA5199BF1243632046A X-Proofpoint-ORIG-GUID: y-4AfJzcgQh2_z4gy5eY22b54LWHgl7I X-Proofpoint-GUID: y-4AfJzcgQh2_z4gy5eY22b54LWHgl7I X-Authority-Analysis: v=2.4 cv=NaLm13D4 c=1 sm=1 tr=0 ts=67f3eb1a cx=c_pps a=hnmNkyzTK/kJ09Xio7VxxA==:117 a=xqWC_Br6kY4A:10 a=IkcTkHD0fZMA:10 a=XR8D0OoHHMoA:10 a=KKAkSRfTAAAA:8 a=EUspDBNiAAAA:8 a=ueZRYqln2k_rfa3UlOQA:9 a=QEXdDO2ut3YA:10 a=PEH46H7Ffwr30OY-TuGO:22 a=cvBusfyB2V15izCimMoJ:22 X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.293,Aquarius:18.0.1095,Hydra:6.0.680,FMLib:17.12.68.34 definitions=2025-04-07_04,2025-04-03_03,2024-11-22_01 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 mlxscore=0 impostorscore=0 priorityscore=1501 adultscore=0 malwarescore=0 suspectscore=0 lowpriorityscore=0 bulkscore=0 mlxlogscore=893 clxscore=1015 phishscore=0 spamscore=0 classifier=spam authscore=0 authtc=n/a authcc= route=outbound adjust=0 reason=mlx scancount=1 engine=8.19.0-2502280000 definitions=main-2504070106 Allow HDMI DRM bridges to create CEC notifier. Physical address is handled automatically by drm_atomic_helper_connector_hdmi_hotplug() being called from .detect() path. Signed-off-by: Dmitry Baryshkov Signed-off-by: Dmitry Baryshkov Reviewed-by: Maxime Ripard --- drivers/gpu/drm/display/Kconfig | 1 + drivers/gpu/drm/display/drm_bridge_connector.c | 24 ++++++++++++++++++++++= ++ include/drm/drm_bridge.h | 11 +++++++++++ 3 files changed, 36 insertions(+) diff --git a/drivers/gpu/drm/display/Kconfig b/drivers/gpu/drm/display/Kcon= fig index 6376ea01ec3093a72de25064e31223d2c9868ed7..df09cf9a8ca19ea894d6f2fad68= c0b191e81e3d0 100644 --- a/drivers/gpu/drm/display/Kconfig +++ b/drivers/gpu/drm/display/Kconfig @@ -17,6 +17,7 @@ if DRM_DISPLAY_HELPER config DRM_BRIDGE_CONNECTOR bool select DRM_DISPLAY_HDMI_AUDIO_HELPER + select DRM_DISPLAY_HDMI_CEC_HELPER select DRM_DISPLAY_HDMI_STATE_HELPER help DRM connector implementation terminating DRM bridge chains. diff --git a/drivers/gpu/drm/display/drm_bridge_connector.c b/drivers/gpu/d= rm/display/drm_bridge_connector.c index 381a0f9d4259bf9f72d3a292b7dcc82e45c61bae..daf6117268d9d3bb0c0c12b5094= e79ad13cf72dd 100644 --- a/drivers/gpu/drm/display/drm_bridge_connector.c +++ b/drivers/gpu/drm/display/drm_bridge_connector.c @@ -20,6 +20,7 @@ #include #include #include +#include #include #include =20 @@ -113,6 +114,13 @@ struct drm_bridge_connector { * &DRM_BRIDGE_OP_DP_AUDIO). */ struct drm_bridge *bridge_dp_audio; + /** + * @bridge_hdmi_cec: + * + * The bridge in the chain that implements CEC support, if any (see + * DRM_BRIDGE_OP_HDMI_CEC_NOTIFIER). + */ + struct drm_bridge *bridge_hdmi_cec; }; =20 #define to_drm_bridge_connector(x) \ @@ -662,6 +670,13 @@ struct drm_connector *drm_bridge_connector_init(struct= drm_device *drm, bridge_connector->bridge_dp_audio =3D bridge; } =20 + if (bridge->ops & DRM_BRIDGE_OP_HDMI_CEC_NOTIFIER) { + if (bridge_connector->bridge_hdmi_cec) + return ERR_PTR(-EBUSY); + + bridge_connector->bridge_hdmi_cec =3D bridge; + } + if (!drm_bridge_get_next_bridge(bridge)) connector_type =3D bridge->type; =20 @@ -724,6 +739,15 @@ struct drm_connector *drm_bridge_connector_init(struct= drm_device *drm, return ERR_PTR(ret); } =20 + if (bridge_connector->bridge_hdmi_cec && + bridge_connector->bridge_hdmi_cec->ops & DRM_BRIDGE_OP_HDMI_CEC_NOTIF= IER) { + ret =3D drm_connector_hdmi_cec_notifier_register(connector, + NULL, + bridge->hdmi_cec_dev); + if (ret) + return ERR_PTR(ret); + } + drm_connector_helper_add(connector, &drm_bridge_connector_helper_funcs); =20 if (bridge_connector->bridge_hpd) diff --git a/include/drm/drm_bridge.h b/include/drm/drm_bridge.h index db0d374d863b0b1f774d395743f1e29bb84e8937..0e5f6a007d536215bd50e118464= 33290c2060b9c 100644 --- a/include/drm/drm_bridge.h +++ b/include/drm/drm_bridge.h @@ -907,6 +907,11 @@ enum drm_bridge_ops { * flag. */ DRM_BRIDGE_OP_DP_AUDIO =3D BIT(6), + /** + * @DRM_BRIDGE_OP_HDMI_CEC_NOTIFIER: The bridge requires CEC notifier + * to be present. + */ + DRM_BRIDGE_OP_HDMI_CEC_NOTIFIER =3D BIT(7), }; =20 /** @@ -1003,6 +1008,12 @@ struct drm_bridge { */ unsigned int max_bpc; =20 + /** + * @hdmi_cec_dev: device to be used as a containing device for CEC + * functions. + */ + struct device *hdmi_cec_dev; + /** * @hdmi_audio_dev: device to be used as a parent for the HDMI Codec if * either of @DRM_BRIDGE_OP_HDMI_AUDIO or @DRM_BRIDGE_OP_DP_AUDIO is set. --=20 2.39.5