From patchwork Thu Feb 17 22:41:46 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Brian Norris X-Patchwork-Id: 12750695 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 0FF61C433EF for ; Thu, 17 Feb 2022 22:42:17 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender: Content-Transfer-Encoding:Content-Type:List-Subscribe:List-Help:List-Post: List-Archive:List-Unsubscribe:List-Id:MIME-Version:References:In-Reply-To: Message-Id:Date:Subject:Cc:To:From:Reply-To:Content-ID:Content-Description: Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID: List-Owner; bh=jDxH1WWQUluBqirXZvtFdPABCVsVfCQsO6BRbn7IPgs=; b=KdnPff5pgHF8Wh j1qlyxQCIDSdOp7u3U722+haip1aWbv3jshBajdSMvbO/Ljpvw5r7trzQo21S2AMGxoCEUabUB23d foPJTGQBsXri/VTqRIFSm60OBZ08X7tMdna6jBuEe1YZFdtvgH0Llir7yu0YZ8l+/y6m9QJy+1DRM ejlX1Sp33ZhRtEhbFTpV1zxkLai+ELHOrZhsOsFdafNd3q5BggGl1mDadOvCxfleoddLMpNVIqvhb iVGwoiOJNsYfE/3SivPjvPn2gWWtzHuncH9j4G2EF4WfzRgsVovZ3kw/nR27vHZM9rcPU8f0XAIJb j4At7D/pAVFs45dldaQQ==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.94.2 #2 (Red Hat Linux)) id 1nKpTY-00CNiR-22; Thu, 17 Feb 2022 22:42:12 +0000 Received: from mail-pj1-x102d.google.com ([2607:f8b0:4864:20::102d]) by bombadil.infradead.org with esmtps (Exim 4.94.2 #2 (Red Hat Linux)) id 1nKpTV-00CNgw-9L for linux-rockchip@lists.infradead.org; Thu, 17 Feb 2022 22:42:11 +0000 Received: by mail-pj1-x102d.google.com with SMTP id v4so6987946pjh.2 for ; Thu, 17 Feb 2022 14:42:08 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=chromium.org; s=google; h=from:to:cc:subject:date:message-id:in-reply-to:references :mime-version:content-transfer-encoding; bh=5mmtHfGvX3QTdzLz6j/Nu6tjim8GE4bCKl/5zpm/NAQ=; b=BzfZpeq3rZdStoI1Wr0xcS8Cf55hQJ/D+7O5l60/MUPozDdqMR3PzVwSfYraa+nLNT NyD7gmG5bjFJAZvQjb+UrhHZ97vZIwQxC6do5y2+9SD9RrVdz/VEfZyfLpsRW5Svhs3y 0aDXxqIAti6kqYHFQ6CBjV1g6soYBlxXwNrSQ= X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; h=x-gm-message-state:from:to:cc:subject:date:message-id:in-reply-to :references:mime-version:content-transfer-encoding; bh=5mmtHfGvX3QTdzLz6j/Nu6tjim8GE4bCKl/5zpm/NAQ=; b=wQrUvn8RZw3f9BC6c+5D/uDdFb/GzLMm3iDmqKleHZqJx8hrp2LdnmAv+IfK81LCAC Of2NtO7zmN/txlOGbCt769nmZHNs11RiHZ1sgpsIqedCN8gp5bhoP8G9RobTbXsl8x+e +1KwXdgPz7GGOMGzCFRn16Neuf+KTBiT4h4L+yVgctrzwS8q8kcDEIVxy/zN01rldo9L t11ZNILiAOiQDjB1ou/oZ019Sgy6hmmueuRn06XVjUwkI7d+OTaIshNhGYLdWwlTJ4UN tyko15H7/h0X/5V5wAftl7BgfPVRF/RJoi5813UikGmhj/xI+kJnq/N0E4fNgg2zoyKI oOmA== X-Gm-Message-State: AOAM531k/e9nvw1xQ3RsMSjE0T+RibFOwUq0nNI2LaLFZN4Pv6wduSiA Ol26s5zzwJNTIQloIfiODgqVfg== X-Google-Smtp-Source: ABdhPJz3bf7M0OSxfziRldKe7HpMouFMO9Ur2/1DPJi+T1EoIE3EpMv4yzP/J7CTVuwGmI1BEieWyg== X-Received: by 2002:a17:902:bd85:b0:14d:c29b:d534 with SMTP id q5-20020a170902bd8500b0014dc29bd534mr4651443pls.99.1645137728224; Thu, 17 Feb 2022 14:42:08 -0800 (PST) Received: from localhost ([2620:15c:202:201:677e:1914:4c14:1662]) by smtp.gmail.com with UTF8SMTPSA id 4sm574985pfh.125.2022.02.17.14.42.07 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Thu, 17 Feb 2022 14:42:07 -0800 (PST) From: Brian Norris To: Andrzej Hajda , Neil Armstrong Cc: linux-kernel@vger.kernel.org, linux-rockchip@lists.infradead.org, Doug Anderson , Sean Paul , Jernej Skrabec , dri-devel@lists.freedesktop.org, Laurent Pinchart , Jonas Karlman , Brian Norris Subject: [PATCH v3 2/2] drm/bridge: analogix_dp: Enable autosuspend Date: Thu, 17 Feb 2022 14:41:46 -0800 Message-Id: <20220217144136.v3.2.I48b18ab197c9b649d376cf8cfd934e59d338f86d@changeid> X-Mailer: git-send-email 2.35.1.265.g69c8d7142f-goog In-Reply-To: <20220217144136.v3.1.I773a08785666ebb236917b0c8e6c05e3de471e75@changeid> References: <20220217144136.v3.1.I773a08785666ebb236917b0c8e6c05e3de471e75@changeid> MIME-Version: 1.0 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20220217_144209_346622_B1F5A6AB X-CRM114-Status: GOOD ( 11.33 ) X-BeenThere: linux-rockchip@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: Upstream kernel work for Rockchip platforms List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "Linux-rockchip" Errors-To: linux-rockchip-bounces+linux-rockchip=archiver.kernel.org@lists.infradead.org DP AUX transactions can consist of many short operations. There's no need to power things up/down in short intervals. I pick an arbitrary 100ms; for the systems I'm testing (Rockchip RK3399), runtime-PM transitions only take a few microseconds. Signed-off-by: Brian Norris --- Changes in v3: - New in v3 drivers/gpu/drm/bridge/analogix/analogix_dp_core.c | 6 ++++-- 1 file changed, 4 insertions(+), 2 deletions(-) diff --git a/drivers/gpu/drm/bridge/analogix/analogix_dp_core.c b/drivers/gpu/drm/bridge/analogix/analogix_dp_core.c index 16be279aed2c..d82a4ddf44e7 100644 --- a/drivers/gpu/drm/bridge/analogix/analogix_dp_core.c +++ b/drivers/gpu/drm/bridge/analogix/analogix_dp_core.c @@ -1121,7 +1121,7 @@ static int analogix_dp_get_modes(struct drm_connector *connector) pm_runtime_get_sync(dp->dev); edid = drm_get_edid(connector, &dp->aux.ddc); - pm_runtime_put(dp->dev); + pm_runtime_put_autosuspend(dp->dev); if (edid) { drm_connector_update_edid_property(&dp->connector, edid); @@ -1642,7 +1642,7 @@ static ssize_t analogix_dpaux_transfer(struct drm_dp_aux *aux, ret = analogix_dp_transfer(dp, msg); out: - pm_runtime_put(dp->dev); + pm_runtime_put_autosuspend(dp->dev); return ret; } @@ -1775,6 +1775,8 @@ int analogix_dp_bind(struct analogix_dp_device *dp, struct drm_device *drm_dev) if (ret) return ret; + pm_runtime_use_autosuspend(dp->dev); + pm_runtime_set_autosuspend_delay(dp->dev, 100); pm_runtime_enable(dp->dev); ret = analogix_dp_create_bridge(drm_dev, dp);