From patchwork Sat Nov 9 12:48:33 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Dmitry Baryshkov X-Patchwork-Id: 13869656 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id 44245D5E369 for ; Sat, 9 Nov 2024 13:13:27 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender:List-Subscribe:List-Help :List-Post:List-Archive:List-Unsubscribe:List-Id:Cc:To:In-Reply-To:References :Message-Id:Content-Transfer-Encoding:Content-Type:MIME-Version:Subject:Date: From:Reply-To:Content-ID:Content-Description:Resent-Date:Resent-From: Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:List-Owner; bh=0+2GniAkdmp4BwJcsCVeiFyEwNMIk2x1tb1O8W07KrE=; b=mjh+2higXDSSo+5kgoCKSEhKw2 qbIadw9iEMO26mg2yJlCtLh1/gseXsWtOz708l7oomsMC8BojilOFS9Ejv9htsGeowjTC9H1ml1gy o1AcQ0FYKe8VBxtpDcsas2AwpwBQdfTyHChY9U1meIbU/+J8ywwR0wJ4s1ekVYn/V6MIn4amRaacD WU62aCPzCVB/X+vYABUcC48Ygom090SMkrAec2usZ2hkdkMho+pbGavaLNw88pQcJ5XCpR4odkwNt CCCjuwq2W4yDIrOlYQurVFke+7P7iZzc0RyZuNFS/BSgj3QZZQjEtyQJB/K+j8wIU6WDrFAjQ/iMK +Eo2K6yw==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.98 #2 (Red Hat Linux)) id 1t9lH8-0000000DOBc-1W32; Sat, 09 Nov 2024 13:13:14 +0000 Received: from mail-lf1-x131.google.com ([2a00:1450:4864:20::131]) by bombadil.infradead.org with esmtps (Exim 4.98 #2 (Red Hat Linux)) id 1t9ktW-0000000DLAE-2ilP for linux-arm-kernel@lists.infradead.org; Sat, 09 Nov 2024 12:48:56 +0000 Received: by mail-lf1-x131.google.com with SMTP id 2adb3069b0e04-539d9fffea1so3099853e87.2 for ; Sat, 09 Nov 2024 04:48:50 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linaro.org; s=google; t=1731156528; x=1731761328; darn=lists.infradead.org; h=cc:to:in-reply-to:references:message-id:content-transfer-encoding :mime-version:subject:date:from:from:to:cc:subject:date:message-id :reply-to; bh=0+2GniAkdmp4BwJcsCVeiFyEwNMIk2x1tb1O8W07KrE=; b=EDlMCajvVNvuyYEi3NfiAE2aHoZBRnUEUUR+5JxIWqwcEF4O7+oSSHlqzUKah4IGzi QN9Gxu6MOzA+HKgKex0DVeNL0lLfEfnVN2pRCskD14ldxYppGRCS33RcuSnYr9kijNO6 VG/JbI3Qf8NNT5FdZC0X1ecQ31PaoCHeTdJJ2y8HAyHr2D9KFoxu6rjITLrEUx2qpRXD WW9LST9PLTx3KdEqCSYzkj2iMSq/oFK6xT3pZLhIMkc0Upx6/nmLYvqU5iHyltswW0AR fVOUCmZeAFyPfSzeddK14Z3qPmxGJpBtJQxBcxV2Y/y8B6vZ840tqN0q6WzIfSLBJuIv ggJA== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1731156528; x=1731761328; 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=0+2GniAkdmp4BwJcsCVeiFyEwNMIk2x1tb1O8W07KrE=; b=IzCudUdtYgnShsLCkhVeayRR/kPVItNEZaXqEZRfjdSEK9zLV5dsb4j5FGza6eTqqV et1rupXyZXrvReC+oLaF9t62vZqrw9lec6Fgp6aubHqKCl6DJ5V9pCbGzMQImz/QtApD uuFu57OR9TpD7Tv7eznhn0zfIXBEmfHQCjDnWPqLfJ5lvUnvjwJ4uRr1OMGtS1Ng3PWE 63WdSbjuXwGhnw2GHK/jgHx+zIrvhDZ3/mVNGh1FRl8z7fcfhH9oRTL61si4d6ooz+rb SCb0GT3N3D7kZjOjmweSB/vO1Bl/uwA4utlARHzIXXSVWZrUBCQd0pzmAyn55sFm9uae DeCA== X-Forwarded-Encrypted: i=1; AJvYcCUeVYnBSI3UAK6cskuyHxx3nSYy3wY0KqBCbN0g3U/CBVjjtlxrJgpVtNZGGjAijWcOJwMs485gyq33R1qGMquU@lists.infradead.org X-Gm-Message-State: AOJu0Yxey4u1ryECrmnOvtLgHAX9XJckzeXdNuCpUHiejCueaH2UaGT5 RC4E0RFUmqjUFH2O9Fn+yS0SpMYa8TboH+mIvS0MxXBYLtUpiK659TcTLO0XxSg= X-Google-Smtp-Source: AGHT+IHTXV5Cz5pjd5Ce3JQaNt839BiITtgrMF3UnvNUaVEgnkA8D0ncy/dtINK9kj+DtzeoWo9CeA== X-Received: by 2002:a05:6512:2254:b0:539:e776:71f7 with SMTP id 2adb3069b0e04-53d862ebe11mr3204121e87.37.1731156528375; Sat, 09 Nov 2024 04:48:48 -0800 (PST) Received: from umbar.lan ([192.130.178.90]) by smtp.gmail.com with ESMTPSA id 2adb3069b0e04-53d826a9b76sm929967e87.172.2024.11.09.04.48.45 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Sat, 09 Nov 2024 04:48:47 -0800 (PST) From: Dmitry Baryshkov Date: Sat, 09 Nov 2024 14:48:33 +0200 Subject: [PATCH v3 7/7] drm/bridge_connector: hook drm_atomic_helper_connector_hdmi_update_edid() MIME-Version: 1.0 Message-Id: <20241109-drm-bridge-hdmi-connector-v3-7-c15afdca5884@linaro.org> References: <20241109-drm-bridge-hdmi-connector-v3-0-c15afdca5884@linaro.org> In-Reply-To: <20241109-drm-bridge-hdmi-connector-v3-0-c15afdca5884@linaro.org> To: Andrzej Hajda , Neil Armstrong , Robert Foss , Laurent Pinchart , Jonas Karlman , Jernej Skrabec , Maarten Lankhorst , Maxime Ripard , Thomas Zimmermann , David Airlie , Simona Vetter , Jaroslav Kysela , Takashi Iwai , Liam Girdwood , Mark Brown , Phong LE , Inki Dae , Seung-Woo Kim , Kyungmin Park , Krzysztof Kozlowski , Alim Akhtar , Russell King , Chun-Kuang Hu , Philipp Zabel , Matthias Brugger , AngeloGioacchino Del Regno , Sandy Huang , =?utf-8?q?Heiko_St=C3=BCbner?= , Andy Yan , Alain Volmat Cc: Jani Nikula , dri-devel@lists.freedesktop.org, linux-kernel@vger.kernel.org, linux-sound@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-samsung-soc@vger.kernel.org, linux-mediatek@lists.infradead.org, linux-rockchip@lists.infradead.org X-Mailer: b4 0.14.2 X-Developer-Signature: v=1; a=openpgp-sha256; l=4107; i=dmitry.baryshkov@linaro.org; h=from:subject:message-id; bh=yRmYAaGG5FuJnzbiAwK+r8Wa4ofx1aRyHEGe3Ks/gxw=; b=owGbwMvMwMXYbdNlx6SpcZXxtFoSQ7p+lFxRuV8WF0di+7PrL76Ihi3eyqsmfkm3TtdLbPHfu Kv8e1o6GY1ZGBi5GGTFFFl8ClqmxmxKDvuwY2o9zCBWJpApDFycAjCR5AIOhoaNT+94f9VgurjW 63et8pWUF1u7C14yvWF1yLnWKWVrq5RnYdFxJvjIztNnN+cGJ5ZUF3E+WFWh8tP/xY+tPcoVGWs kdS+e688Szr0xvfpM6ob/a6791d7Z37ef8dXtPTG/hL9GbG6oftp7X/Omcre2U7DNu1tTz+yb/e ZnNafE9mo2Tr/wzjfaIWqvF5oELDBtWn/7/cxjNZJ1S5dJ62SacfxzlKmynMBtITLV1PnEcgkxl 2q3/TNdA9cIb3gkm9X8yCfJgvPclJ83tYq2LXreWfTycrXvDaXIZyer3WO6HteXZlycK5KVnTH7 kbZP2QY92btBCVe5rItu/uB/IV9UJGS8bUqp2suFBlpiAA== X-Developer-Key: i=dmitry.baryshkov@linaro.org; a=openpgp; fpr=8F88381DD5C873E4AE487DA5199BF1243632046A X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20241109_044850_782784_A3DEBF25 X-CRM114-Status: GOOD ( 18.56 ) 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 Extend drm_bridge_connector code to read the EDID and use it to update connector status if the bridge chain implements HDMI bridge. Performing it from the generic location minimizes individual bridge's code and enforces standard behaviour from all corresponding drivers. Signed-off-by: Dmitry Baryshkov --- drivers/gpu/drm/display/drm_bridge_connector.c | 67 ++++++++++++++++++++------ 1 file changed, 53 insertions(+), 14 deletions(-) diff --git a/drivers/gpu/drm/display/drm_bridge_connector.c b/drivers/gpu/drm/display/drm_bridge_connector.c index 12ab9f14cc8a8672478ae2804c9a68d766d88ea5..71ae3b2c9049016d1cc0d39a787f6461633efd53 100644 --- a/drivers/gpu/drm/display/drm_bridge_connector.c +++ b/drivers/gpu/drm/display/drm_bridge_connector.c @@ -17,6 +17,7 @@ #include #include #include +#include #include #include @@ -175,17 +176,55 @@ static void drm_bridge_connector_disable_hpd(struct drm_connector *connector) * Bridge Connector Functions */ +static const struct drm_edid * +drm_bridge_connector_read_edid(struct drm_connector *connector, + enum drm_connector_status status) +{ + struct drm_bridge_connector *bridge_connector = + to_drm_bridge_connector(connector); + const struct drm_edid *drm_edid; + struct drm_bridge *bridge; + + bridge = bridge_connector->bridge_edid; + if (!bridge) + return NULL; + + if (status != connector_status_connected) + return NULL; + + drm_edid = drm_bridge_edid_read(bridge, connector); + if (!drm_edid_valid(drm_edid)) { + drm_edid_free(drm_edid); + return NULL; + } + + return drm_edid; +} + static enum drm_connector_status drm_bridge_connector_detect(struct drm_connector *connector, bool force) { struct drm_bridge_connector *bridge_connector = to_drm_bridge_connector(connector); struct drm_bridge *detect = bridge_connector->bridge_detect; + struct drm_bridge *hdmi = bridge_connector->bridge_hdmi; enum drm_connector_status status; if (detect) { status = detect->funcs->detect(detect); + if (hdmi) { + const struct drm_edid *drm_edid; + int ret; + + drm_edid = drm_bridge_connector_read_edid(connector, status); + ret = drm_atomic_helper_connector_hdmi_update_edid(connector, drm_edid); + if (ret) + drm_warn(connector->dev, "updating EDID failed with %d\n", ret); + + drm_edid_free(drm_edid); + } + drm_bridge_connector_hpd_notify(connector, status); } else { switch (connector->connector_type) { @@ -246,29 +285,29 @@ static const struct drm_connector_funcs drm_bridge_connector_funcs = { static int drm_bridge_connector_get_modes_edid(struct drm_connector *connector, struct drm_bridge *bridge) { + struct drm_bridge_connector *bridge_connector = + to_drm_bridge_connector(connector); + struct drm_bridge *hdmi = bridge_connector->bridge_hdmi; enum drm_connector_status status; const struct drm_edid *drm_edid; - int n; status = drm_bridge_connector_detect(connector, false); if (status != connector_status_connected) - goto no_edid; + return 0; - drm_edid = drm_bridge_edid_read(bridge, connector); - if (!drm_edid_valid(drm_edid)) { + /* In HDMI setup the EDID has been read and handled as a part of .detect() */ + if (!hdmi) { + drm_edid = drm_bridge_connector_read_edid(connector, status); + if (!drm_edid) { + drm_edid_connector_update(connector, NULL); + return 0; + } + + drm_edid_connector_update(connector, drm_edid); drm_edid_free(drm_edid); - goto no_edid; } - drm_edid_connector_update(connector, drm_edid); - n = drm_edid_connector_add_modes(connector); - - drm_edid_free(drm_edid); - return n; - -no_edid: - drm_edid_connector_update(connector, NULL); - return 0; + return drm_edid_connector_add_modes(connector); } static int drm_bridge_connector_get_modes(struct drm_connector *connector)