From patchwork Tue Mar 14 11:00:42 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Pin-yen Lin X-Patchwork-Id: 13174061 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 gabe.freedesktop.org (gabe.freedesktop.org [131.252.210.177]) (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 DFCA7C6FD1D for ; Tue, 14 Mar 2023 11:00:54 +0000 (UTC) Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id 2C12E10E126; Tue, 14 Mar 2023 11:00:54 +0000 (UTC) Received: from mail-pf1-x42b.google.com (mail-pf1-x42b.google.com [IPv6:2607:f8b0:4864:20::42b]) by gabe.freedesktop.org (Postfix) with ESMTPS id E5F8C89149 for ; Tue, 14 Mar 2023 11:00:52 +0000 (UTC) Received: by mail-pf1-x42b.google.com with SMTP id c4so9474170pfl.0 for ; Tue, 14 Mar 2023 04:00:52 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=chromium.org; s=google; t=1678791652; h=content-transfer-encoding:mime-version:message-id:date:subject:cc :to:from:from:to:cc:subject:date:message-id:reply-to; bh=Js/tHDer/Yr5TRaIcV1cVBSaKjsn5E+7833Z9Y2Z5oc=; b=gInm2BDdjwVTeHhR+bNfsdsL2pH8+qdgFc7TzHVJ4615z6q0HAoAtyj5pze2EYkGTz 1jpip1tf8MIJ7tJqh0VMGZ7Zr0N3ZwCVJ1+5nwgQapiJNp7s27Y/MRo2oYpVreB3IqiZ sIto1wJGlyvGFDTiMNxtX2WNThMiOKoVNitN8= X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; t=1678791652; h=content-transfer-encoding:mime-version:message-id:date:subject:cc :to:from:x-gm-message-state:from:to:cc:subject:date:message-id :reply-to; bh=Js/tHDer/Yr5TRaIcV1cVBSaKjsn5E+7833Z9Y2Z5oc=; b=vxozHTC+iNQLidE3J5YHEGeT8tN5rXqkWMbj8gZAei1Q78Me/lt0MREnLAh8sgDiaV EqK5xXVgOI1O/0laj5u1wELIuWMhv003ekQUS6Tm4jMtxMMyXiUzhi2/w+049NG4Ga9M W5JzwMqT2jATtle70PNT/Wi/vRfJPp7KkaHX5Hj/F8cx2L3KAOVs80eHx1TCyL2V+TEk pcUqSu5ocWE45ElWkZT1OPdERpIKK+lc6yz2DN1YdbK17gDxryieIbakn+M6mlb4nbQQ kbtd270eM+Ccoi3zTV2qNu+jqIH59PO/zSOHYKDzhIgsdnnPCxbRPk8qUwU3eB/ZG62v EwRQ== X-Gm-Message-State: AO0yUKXIryMkRamjMEmwwlwShr0oGtjb7V57gjUQ6Ra+HvXkVxwc1XBR bIWEuY6fD/CDcuJ+IrXxNK7lVw== X-Google-Smtp-Source: AK7set+M0m+PUk7VtHcQ/wCnMA01qfJFPe6qJcSy/J388yRSRSnOkJJyxAJrjvIqfPdAK5e4t4zAEA== X-Received: by 2002:aa7:9511:0:b0:625:4d29:7390 with SMTP id b17-20020aa79511000000b006254d297390mr3123574pfp.13.1678791652359; Tue, 14 Mar 2023 04:00:52 -0700 (PDT) Received: from treapking.tpe.corp.google.com ([2401:fa00:1:10:3718:fdeb:7d7e:b6c0]) by smtp.gmail.com with ESMTPSA id x2-20020a62fb02000000b005a909290425sm1362028pfm.172.2023.03.14.04.00.49 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Tue, 14 Mar 2023 04:00:51 -0700 (PDT) From: Pin-yen Lin To: Douglas Anderson , Andrzej Hajda , Neil Armstrong , Robert Foss , Laurent Pinchart , Jonas Karlman , Jernej Skrabec , David Airlie , Daniel Vetter Subject: [PATCH 1/2] drm/bridge: ps8640: Skip redundant bridge enable Date: Tue, 14 Mar 2023 19:00:42 +0800 Message-Id: <20230314110043.2139111-1-treapking@chromium.org> X-Mailer: git-send-email 2.40.0.rc1.284.g88254d51c5-goog MIME-Version: 1.0 X-BeenThere: dri-devel@lists.freedesktop.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Direct Rendering Infrastructure - Development List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Enric Balletbo i Serra , Pin-yen Lin , linux-kernel@vger.kernel.org, dri-devel@lists.freedesktop.org Errors-To: dri-devel-bounces@lists.freedesktop.org Sender: "dri-devel" Skip the drm_bridge_chain_pre_enable call when the bridge is already pre_enabled. This make pre_enable and post_disable (thus pm_runtime_get/put) symmetric. Fixes: 46f206304db0 ("drm/bridge: ps8640: Rework power state handling") Signed-off-by: Pin-yen Lin Reviewed-by: Robert Foss Reviewed-by: Douglas Anderson --- drivers/gpu/drm/bridge/parade-ps8640.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/drivers/gpu/drm/bridge/parade-ps8640.c b/drivers/gpu/drm/bridge/parade-ps8640.c index 4b361d7d5e44..08de501c436e 100644 --- a/drivers/gpu/drm/bridge/parade-ps8640.c +++ b/drivers/gpu/drm/bridge/parade-ps8640.c @@ -557,7 +557,8 @@ static struct edid *ps8640_bridge_get_edid(struct drm_bridge *bridge, * EDID, for this chip, we need to do a full poweron, otherwise it will * fail. */ - drm_atomic_bridge_chain_pre_enable(bridge, connector->state->state); + if (poweroff) + drm_atomic_bridge_chain_pre_enable(bridge, connector->state->state); edid = drm_get_edid(connector, ps_bridge->page[PAGE0_DP_CNTL]->adapter);