From mboxrd@z Thu Jan 1 00:00:00 1970 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=-9.8 required=3.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_PATCH,MAILING_LIST_MULTI,SIGNED_OFF_BY,SPF_HELO_NONE,SPF_PASS, UNPARSEABLE_RELAY,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 AC044C3A5A4 for ; Sat, 24 Aug 2019 03:08:44 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 818C82133F for ; Sat, 24 Aug 2019 03:08:44 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726795AbfHXDIn (ORCPT ); Fri, 23 Aug 2019 23:08:43 -0400 Received: from mailgw01.mediatek.com ([210.61.82.183]:25502 "EHLO mailgw01.mediatek.com" rhost-flags-OK-FAIL-OK-FAIL) by vger.kernel.org with ESMTP id S1725283AbfHXDIn (ORCPT ); Fri, 23 Aug 2019 23:08:43 -0400 X-UUID: c83af82a5c0944b6a7ad53d5f1185b9c-20190824 X-UUID: c83af82a5c0944b6a7ad53d5f1185b9c-20190824 Received: from mtkmrs01.mediatek.inc [(172.21.131.159)] by mailgw01.mediatek.com (envelope-from ) (Cellopoint E-mail Firewall v4.1.10 Build 0707 with TLS) with ESMTP id 1487398106; Sat, 24 Aug 2019 11:06:33 +0800 Received: from mtkcas07.mediatek.inc (172.21.101.84) by mtkmbs07n2.mediatek.inc (172.21.101.141) with Microsoft SMTP Server (TLS) id 15.0.1395.4; Sat, 24 Aug 2019 11:06:25 +0800 Received: from localhost.localdomain (10.17.3.153) by mtkcas07.mediatek.inc (172.21.101.73) with Microsoft SMTP Server id 15.0.1395.4 via Frontend Transport; Sat, 24 Aug 2019 11:06:24 +0800 From: Yong Wu To: Joerg Roedel , Matthias Brugger , Robin Murphy , Will Deacon CC: Rob Herring , Evan Green , Tomasz Figa , , , , , , , , , Nicolas Boichat , , Matthias Kaehlcke , , , Subject: [PATCH v11 19/23] memory: mtk-smi: Invoke pm runtime_callback to enable clocks Date: Sat, 24 Aug 2019 11:02:04 +0800 Message-ID: <1566615728-26388-20-git-send-email-yong.wu@mediatek.com> X-Mailer: git-send-email 1.9.1 In-Reply-To: <1566615728-26388-1-git-send-email-yong.wu@mediatek.com> References: <1566615728-26388-1-git-send-email-yong.wu@mediatek.com> MIME-Version: 1.0 Content-Type: text/plain X-MTK: N Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org This patch only move the clk_prepare_enable and config_port into the runtime suspend/resume callback. It doesn't change the code content and sequence. This is a preparing patch for adjusting SMI_BUS_SEL for mt8183. (SMI_BUS_SEL need to be restored after smi-common resume every time.) Also it gives a chance to get rid of mtk_smi_larb_get/put which could be a next topic. CC: Matthias Brugger Signed-off-by: Yong Wu Reviewed-by: Evan Green Reviewed-by: Matthias Brugger --- drivers/memory/mtk-smi.c | 113 ++++++++++++++++++++++++++++++----------------- 1 file changed, 72 insertions(+), 41 deletions(-) diff --git a/drivers/memory/mtk-smi.c b/drivers/memory/mtk-smi.c index 3dd05de..2bb55b86 100644 --- a/drivers/memory/mtk-smi.c +++ b/drivers/memory/mtk-smi.c @@ -78,17 +78,13 @@ struct mtk_smi_larb { /* larb: local arbiter */ u32 *mmu; }; -static int mtk_smi_enable(const struct mtk_smi *smi) +static int mtk_smi_clk_enable(const struct mtk_smi *smi) { int ret; - ret = pm_runtime_get_sync(smi->dev); - if (ret < 0) - return ret; - ret = clk_prepare_enable(smi->clk_apb); if (ret) - goto err_put_pm; + return ret; ret = clk_prepare_enable(smi->clk_smi); if (ret) @@ -110,59 +106,28 @@ static int mtk_smi_enable(const struct mtk_smi *smi) clk_disable_unprepare(smi->clk_smi); err_disable_apb: clk_disable_unprepare(smi->clk_apb); -err_put_pm: - pm_runtime_put_sync(smi->dev); return ret; } -static void mtk_smi_disable(const struct mtk_smi *smi) +static void mtk_smi_clk_disable(const struct mtk_smi *smi) { clk_disable_unprepare(smi->clk_gals1); clk_disable_unprepare(smi->clk_gals0); clk_disable_unprepare(smi->clk_smi); clk_disable_unprepare(smi->clk_apb); - pm_runtime_put_sync(smi->dev); } int mtk_smi_larb_get(struct device *larbdev) { - struct mtk_smi_larb *larb = dev_get_drvdata(larbdev); - const struct mtk_smi_larb_gen *larb_gen = larb->larb_gen; - struct mtk_smi *common = dev_get_drvdata(larb->smi_common_dev); - int ret; + int ret = pm_runtime_get_sync(larbdev); - /* Enable the smi-common's power and clocks */ - ret = mtk_smi_enable(common); - if (ret) - return ret; - - /* Enable the larb's power and clocks */ - ret = mtk_smi_enable(&larb->smi); - if (ret) { - mtk_smi_disable(common); - return ret; - } - - /* Configure the iommu info for this larb */ - larb_gen->config_port(larbdev); - - return 0; + return (ret < 0) ? ret : 0; } EXPORT_SYMBOL_GPL(mtk_smi_larb_get); void mtk_smi_larb_put(struct device *larbdev) { - struct mtk_smi_larb *larb = dev_get_drvdata(larbdev); - struct mtk_smi *common = dev_get_drvdata(larb->smi_common_dev); - - /* - * Don't de-configure the iommu info for this larb since there may be - * several modules in this larb. - * The iommu info will be reset after power off. - */ - - mtk_smi_disable(&larb->smi); - mtk_smi_disable(common); + pm_runtime_put_sync(larbdev); } EXPORT_SYMBOL_GPL(mtk_smi_larb_put); @@ -377,12 +342,52 @@ static int mtk_smi_larb_remove(struct platform_device *pdev) return 0; } +static int __maybe_unused mtk_smi_larb_resume(struct device *dev) +{ + struct mtk_smi_larb *larb = dev_get_drvdata(dev); + const struct mtk_smi_larb_gen *larb_gen = larb->larb_gen; + int ret; + + /* Power on smi-common. */ + ret = pm_runtime_get_sync(larb->smi_common_dev); + if (ret < 0) { + dev_err(dev, "Failed to pm get for smi-common(%d).\n", ret); + return ret; + } + + ret = mtk_smi_clk_enable(&larb->smi); + if (ret < 0) { + dev_err(dev, "Failed to enable clock(%d).\n", ret); + pm_runtime_put_sync(larb->smi_common_dev); + return ret; + } + + /* Configure the basic setting for this larb */ + larb_gen->config_port(dev); + + return 0; +} + +static int __maybe_unused mtk_smi_larb_suspend(struct device *dev) +{ + struct mtk_smi_larb *larb = dev_get_drvdata(dev); + + mtk_smi_clk_disable(&larb->smi); + pm_runtime_put_sync(larb->smi_common_dev); + return 0; +} + +static const struct dev_pm_ops smi_larb_pm_ops = { + SET_RUNTIME_PM_OPS(mtk_smi_larb_suspend, mtk_smi_larb_resume, NULL) +}; + static struct platform_driver mtk_smi_larb_driver = { .probe = mtk_smi_larb_probe, .remove = mtk_smi_larb_remove, .driver = { .name = "mtk-smi-larb", .of_match_table = mtk_smi_larb_of_ids, + .pm = &smi_larb_pm_ops, } }; @@ -481,12 +486,38 @@ static int mtk_smi_common_remove(struct platform_device *pdev) return 0; } +static int __maybe_unused mtk_smi_common_resume(struct device *dev) +{ + struct mtk_smi *common = dev_get_drvdata(dev); + int ret; + + ret = mtk_smi_clk_enable(common); + if (ret) { + dev_err(common->dev, "Failed to enable clock(%d).\n", ret); + return ret; + } + return 0; +} + +static int __maybe_unused mtk_smi_common_suspend(struct device *dev) +{ + struct mtk_smi *common = dev_get_drvdata(dev); + + mtk_smi_clk_disable(common); + return 0; +} + +static const struct dev_pm_ops smi_common_pm_ops = { + SET_RUNTIME_PM_OPS(mtk_smi_common_suspend, mtk_smi_common_resume, NULL) +}; + static struct platform_driver mtk_smi_common_driver = { .probe = mtk_smi_common_probe, .remove = mtk_smi_common_remove, .driver = { .name = "mtk-smi-common", .of_match_table = mtk_smi_common_of_ids, + .pm = &smi_common_pm_ops, } }; -- 1.9.1