From patchwork Fri Jun 18 07:52:07 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Eizan Miyamoto X-Patchwork-Id: 12330517 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-16.9 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER, INCLUDES_PATCH,MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED, USER_AGENT_GIT autolearn=unavailable autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id C8BFEC49EA3 for ; Fri, 18 Jun 2021 07:57:39 +0000 (UTC) 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 mail.kernel.org (Postfix) with ESMTPS id 90123610EA for ; Fri, 18 Jun 2021 07:57:39 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 90123610EA Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=chromium.org Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org 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=p20k6SxbAxr/30mscauEkspUpTQpdYJaQ2JEA9QJHTk=; b=CAIBZVtLTNsIGo 0XLsbF4oBGQvo4DYDuJ6GPkOKmBsgY9xOSgNK4bO9wI+RI8owH//o5JuWEwLCmR8eMt5J32AueOsB 2XePPjAD23o+t7567XlyJx1bjhZK5mcHkOZjknIUWJpksKSfzoF6DqMcIf/k/N+2D1Xp3s7Vfe8Mt CFtYQl0Gyd1a+xo4UbI5YOtJtQCuRc/KA2xb/c/MzUrhsM3FtrXhJUferwNi321OVxa4OULC1rY8T X2Z49HByiYlKR45S1jN26cb6kKzVQ6K91+x0ejn6MQRjon+E0I73yMG7BcJMuAyxOMvVodmVZUide aNfuaBaz8qCFUkjhcmPw==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.94.2 #2 (Red Hat Linux)) id 1lu9LQ-00DA0m-8O; Fri, 18 Jun 2021 07:55:16 +0000 Received: from mail-pg1-x52c.google.com ([2607:f8b0:4864:20::52c]) by bombadil.infradead.org with esmtps (Exim 4.94.2 #2 (Red Hat Linux)) id 1lu9JM-00D8tz-NG for linux-arm-kernel@lists.infradead.org; Fri, 18 Jun 2021 07:53:11 +0000 Received: by mail-pg1-x52c.google.com with SMTP id e22so950746pgv.10 for ; Fri, 18 Jun 2021 00:53:08 -0700 (PDT) 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=1WdNBOi2CRzcMwfkWOhSgCoOP3Vokmi/ubivKIIfWV4=; b=nPM/mSoLkOb7jxUW1U6aUEsxAvzYTAHcgaqqQUU4apMu2WUeaTHwmeg4gvb3KfKvOx oWxliSD/lUeB6I2UERNfWtOlmAhiLMfCyJ2y9crzA6o+scRziwFkuspOstZ28QGOxvfx mBYvfmhJ7Q0OAYfXsEehDfd7C+Wrx1MdSGdFo= X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:from:to:cc:subject:date:message-id:in-reply-to :references:mime-version:content-transfer-encoding; bh=1WdNBOi2CRzcMwfkWOhSgCoOP3Vokmi/ubivKIIfWV4=; b=SOuXCGGHJZLopwdMsVpw9RckUsKnFA2lWc83u18oLwC4VqUn11NajoYzYQ0fZbPaz9 sMpd0fDId9PktvXSC/3RvSKlxpanSgrX5jtZku2xGrsxp8nT7E7ukQ6IAStOZ9cA8zTl j0TtVTpBVfUo0sI8R5Wyk3PysN81EGzPKMVBUCV7HM/3K6m5P/+a5V3mLFcEPPHwuudD jhdCiQjLR6qRQUePLlZ559mKI7kd4ZlsW95NEGeKxQbXkBN4RXBYtPvB0Br2GutRUKHW 6NfKuMnuh38y0Qnl/zj/IG8hdLhj/QOQJ137i8U4lxkVaNpwMTREdBZHNmY1Y3Iz41ba +0Nw== X-Gm-Message-State: AOAM533gMPCtEvji8fmXnMZCEoQa0SurQauX0ohVxgezPJgBWhY7MbOr x+V7sG4f5eY2Unv24ygeViBCMg== X-Google-Smtp-Source: ABdhPJz5w3n9T0DDlIwIibuX3J5tf5A0ASPaGhUurb8lFnwAGINIl6YWOcGgOTNdUVkLQWYxq69Zrg== X-Received: by 2002:a63:494:: with SMTP id 142mr5826039pge.146.1624002787654; Fri, 18 Jun 2021 00:53:07 -0700 (PDT) Received: from localhost ([2401:fa00:9:14:3e8:19ca:3d8a:e112]) by smtp.gmail.com with UTF8SMTPSA id r14sm2615450pgu.18.2021.06.18.00.53.02 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Fri, 18 Jun 2021 00:53:07 -0700 (PDT) From: Eizan Miyamoto To: linux-kernel@vger.kernel.org Cc: yong.wu@mediatek.com, houlong.wei@mediatek.com, enric.balletbo@collabora.com, chunkuang.hu@kernel.org, wenst@chromium.org, Eizan Miyamoto , Andrew-CT Chen , Matthias Brugger , Mauro Carvalho Chehab , Minghsiu Tsai , linux-arm-kernel@lists.infradead.org, linux-media@vger.kernel.org, linux-mediatek@lists.infradead.org Subject: [PATCH v3 6/8] media: mtk-mdp: propagate errors better in pm_suspend/resume Date: Fri, 18 Jun 2021 17:52:07 +1000 Message-Id: <20210618175059.v3.6.If7d6a147afd8880940c42d7998e47ed3869e8805@changeid> X-Mailer: git-send-email 2.32.0.288.g62a8d224e6-goog In-Reply-To: <20210618075209.1157766-1-eizan@chromium.org> References: <20210618075209.1157766-1-eizan@chromium.org> MIME-Version: 1.0 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20210618_005308_901607_2C1D3B36 X-CRM114-Status: GOOD ( 20.01 ) 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 Up until this change, many errors were logged but ignored when powering on clocks and calling pm_runtime_get/put() inside mtk_mdp_core. This change tries to do a better job at propagating errors back to the power management framework. Signed-off-by: Eizan Miyamoto --- (no changes since v1) drivers/media/platform/mtk-mdp/mtk_mdp_comp.c | 62 ++++++++++++++++--- drivers/media/platform/mtk-mdp/mtk_mdp_comp.h | 6 +- drivers/media/platform/mtk-mdp/mtk_mdp_core.c | 57 +++++++++++++---- 3 files changed, 99 insertions(+), 26 deletions(-) diff --git a/drivers/media/platform/mtk-mdp/mtk_mdp_comp.c b/drivers/media/platform/mtk-mdp/mtk_mdp_comp.c index 3d9bb7265159..59911ee063c1 100644 --- a/drivers/media/platform/mtk-mdp/mtk_mdp_comp.c +++ b/drivers/media/platform/mtk-mdp/mtk_mdp_comp.c @@ -53,39 +53,81 @@ static const struct of_device_id mtk_mdp_comp_driver_dt_match[] = { }; MODULE_DEVICE_TABLE(of, mtk_mdp_comp_driver_dt_match); -void mtk_mdp_comp_power_on(struct mtk_mdp_comp *comp) +int mtk_mdp_comp_power_on(struct mtk_mdp_comp *comp) { - int err; + int status, err; err = pm_runtime_get_sync(comp->dev); - if (err < 0) + if (err < 0) { dev_err(comp->dev, "failed to runtime get, err %d.\n", err); + return err; + } + + err = mtk_mdp_comp_clock_on(comp); + if (err) { + dev_err(comp->dev, "failed to turn on clock. err=%d", err); + status = err; + goto err_mtk_mdp_comp_clock_on; + } + + return err; + +err_mtk_mdp_comp_clock_on: + err = pm_runtime_put_sync(comp->dev); + if (err) + dev_err(comp->dev, "failed to runtime put in cleanup. err=%d", err); - mtk_mdp_comp_clock_on(comp); + return status; } -void mtk_mdp_comp_power_off(struct mtk_mdp_comp *comp) +int mtk_mdp_comp_power_off(struct mtk_mdp_comp *comp) { - int err; + int status, err; mtk_mdp_comp_clock_off(comp); err = pm_runtime_put_sync(comp->dev); - if (err < 0) + if (err < 0) { dev_err(comp->dev, "failed to runtime put, err %d.\n", err); + status = err; + goto err_pm_runtime_put_sync; + } + + return 0; + +err_pm_runtime_put_sync: + err = mtk_mdp_comp_clock_on(comp); + if (err) + dev_err(comp->dev, "failed to turn on clock in cleanup. err=%d", err); + + return status; } -void mtk_mdp_comp_clock_on(struct mtk_mdp_comp *comp) +int mtk_mdp_comp_clock_on(struct mtk_mdp_comp *comp) { - int i, err; + int i, err, status; for (i = 0; i < ARRAY_SIZE(comp->clk); i++) { if (IS_ERR(comp->clk[i])) continue; err = clk_prepare_enable(comp->clk[i]); - if (err) + if (err) { + status = err; dev_err(comp->dev, "failed to enable clock, err %d. i:%d\n", err, i); + goto err_clk_prepare_enable; + } + } + + return 0; + +err_clk_prepare_enable: + for (--i; i >= 0; i--) { + if (IS_ERR(comp->clk[i])) + continue; + clk_disable_unprepare(comp->clk[i]); } + + return status; } void mtk_mdp_comp_clock_off(struct mtk_mdp_comp *comp) diff --git a/drivers/media/platform/mtk-mdp/mtk_mdp_comp.h b/drivers/media/platform/mtk-mdp/mtk_mdp_comp.h index 7ad9b06bb11b..2bd229cc7eae 100644 --- a/drivers/media/platform/mtk-mdp/mtk_mdp_comp.h +++ b/drivers/media/platform/mtk-mdp/mtk_mdp_comp.h @@ -21,10 +21,10 @@ struct mtk_mdp_comp { int mtk_mdp_comp_init(struct mtk_mdp_comp *comp, struct device *dev); -void mtk_mdp_comp_power_on(struct mtk_mdp_comp *comp); -void mtk_mdp_comp_power_off(struct mtk_mdp_comp *comp); +int mtk_mdp_comp_power_on(struct mtk_mdp_comp *comp); +int mtk_mdp_comp_power_off(struct mtk_mdp_comp *comp); -void mtk_mdp_comp_clock_on(struct mtk_mdp_comp *comp); +int mtk_mdp_comp_clock_on(struct mtk_mdp_comp *comp); void mtk_mdp_comp_clock_off(struct mtk_mdp_comp *comp); extern struct platform_driver mtk_mdp_component_driver; diff --git a/drivers/media/platform/mtk-mdp/mtk_mdp_core.c b/drivers/media/platform/mtk-mdp/mtk_mdp_core.c index 48e9a557c446..523e3c2798e1 100644 --- a/drivers/media/platform/mtk-mdp/mtk_mdp_core.c +++ b/drivers/media/platform/mtk-mdp/mtk_mdp_core.c @@ -49,8 +49,9 @@ static const struct of_device_id mtk_mdp_of_ids[] = { }; MODULE_DEVICE_TABLE(of, mtk_mdp_of_ids); -static void mtk_mdp_clock_on(struct mtk_mdp_dev *mdp) +static int mtk_mdp_clock_on(struct mtk_mdp_dev *mdp) { + int err, status; struct mtk_mdp_comp *comp_node; /* @@ -58,18 +59,41 @@ static void mtk_mdp_clock_on(struct mtk_mdp_dev *mdp) * on it through mtk_mdp_m2m_start_streaming, making it unnecessary to * have mtk_mdp_comp_power_on called on it. */ - mtk_mdp_comp_clock_on(&mdp->comp_self); + err = mtk_mdp_comp_clock_on(&mdp->comp_self); + if (err) + return err; + + list_for_each_entry(comp_node, &mdp->comp_list, node) { + err = mtk_mdp_comp_power_on(comp_node); + if (err) { + status = err; + goto err_mtk_mdp_comp_power_on; + } + } - list_for_each_entry(comp_node, &mdp->comp_list, node) - mtk_mdp_comp_power_on(comp_node); + return 0; + +err_mtk_mdp_comp_power_on: + list_for_each_entry_continue_reverse(comp_node, &mdp->comp_list, node) { + err = mtk_mdp_comp_power_off(comp_node); + if (err) + dev_err(&mdp->pdev->dev, "failed to power off after error. err=%d", err); + } + return status; } -static void mtk_mdp_clock_off(struct mtk_mdp_dev *mdp) +static int mtk_mdp_clock_off(struct mtk_mdp_dev *mdp) { + int status, err; struct mtk_mdp_comp *comp_node; - list_for_each_entry(comp_node, &mdp->comp_list, node) - mtk_mdp_comp_power_off(comp_node); + list_for_each_entry(comp_node, &mdp->comp_list, node) { + err = mtk_mdp_comp_power_off(comp_node); + if (err) { + status = err; + goto err_mtk_mdp_comp_power_off; + } + } /* * The master / rdma0 component will have pm_runtime_put called @@ -77,6 +101,17 @@ static void mtk_mdp_clock_off(struct mtk_mdp_dev *mdp) * have mtk_mdp_comp_power_off called on it. */ mtk_mdp_comp_clock_off(&mdp->comp_self); + + return 0; + +err_mtk_mdp_comp_power_off: + list_for_each_entry_continue_reverse(comp_node, &mdp->comp_list, node) { + err = mtk_mdp_comp_power_on(comp_node); + if (err) + dev_err(&mdp->pdev->dev, "failed to power on after error. err=%d", err); + } + + return status; } static void mtk_mdp_wdt_worker(struct work_struct *work) @@ -317,18 +352,14 @@ static int __maybe_unused mtk_mdp_pm_suspend(struct device *dev) { struct mtk_mdp_dev *mdp = dev_get_drvdata(dev); - mtk_mdp_clock_off(mdp); - - return 0; + return mtk_mdp_clock_off(mdp); } static int __maybe_unused mtk_mdp_pm_resume(struct device *dev) { struct mtk_mdp_dev *mdp = dev_get_drvdata(dev); - mtk_mdp_clock_on(mdp); - - return 0; + return mtk_mdp_clock_on(mdp); } static int __maybe_unused mtk_mdp_suspend(struct device *dev)