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Wysocki" , Len Brown , Pavel Machek , , , , , , , Tony Lindgren , Tianping Fang , Eddie Hung , "Ikjoon Jang" , Nicolas Boichat Subject: [PATCH 1/6] PM: runtime: enable wake irq after runtime_suspend hook called Date: Thu, 8 Apr 2021 17:35:09 +0800 Message-ID: <1617874514-12282-1-git-send-email-chunfeng.yun@mediatek.com> X-Mailer: git-send-email 1.8.1.1.dirty MIME-Version: 1.0 X-TM-SNTS-SMTP: E5C6DB1EBBB6601790860FBE2A607D826DC4ADE8017410E55972F9D1B0FDA48D2000:8 X-MTK: N X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20210408_103531_126193_EB34E641 X-CRM114-Status: GOOD ( 11.60 ) 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 When the dedicated wake irq is level trigger, enable it before calling runtime_suspend, will trigger an interrupt. e.g. for a low level trigger type, it's low level at running time (0), and becomes high level when enters suspend (runtime_suspend (1) is called), a wakeup signal at (2) make it become low level, wake irq will be triggered. ------------------ | ^ ^| ---------------- | | -------------- |<---(0)--->|<--(1)--| (3) (2) (4) if we enable the wake irq before calling runtime_suspend during (0), an interrupt will arise, it causes resume immediately; enable wake irq after calling runtime_suspend, e.g. at (3) or (4), will works. This patch seems no side effect on edge trigger wake irq. Signed-off-by: Chunfeng Yun --- drivers/base/power/runtime.c | 5 ++--- 1 file changed, 2 insertions(+), 3 deletions(-) diff --git a/drivers/base/power/runtime.c b/drivers/base/power/runtime.c index a46a7e30881b..796739a015a5 100644 --- a/drivers/base/power/runtime.c +++ b/drivers/base/power/runtime.c @@ -619,12 +619,12 @@ static int rpm_suspend(struct device *dev, int rpmflags) __update_runtime_status(dev, RPM_SUSPENDING); callback = RPM_GET_CALLBACK(dev, runtime_suspend); - - dev_pm_enable_wake_irq_check(dev, true); retval = rpm_callback(callback, dev); if (retval) goto fail; + dev_pm_enable_wake_irq_check(dev, true); + no_callback: __update_runtime_status(dev, RPM_SUSPENDED); pm_runtime_deactivate_timer(dev); @@ -659,7 +659,6 @@ static int rpm_suspend(struct device *dev, int rpmflags) return retval; fail: - dev_pm_disable_wake_irq_check(dev); __update_runtime_status(dev, RPM_ACTIVE); dev->power.deferred_resume = false; wake_up_all(&dev->power.wait_queue); From patchwork Thu Apr 8 09:35:10 2021 Content-Type: text/plain; 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Thu, 08 Apr 2021 02:35:22 -0700 Received: from MTKMBS06N1.mediatek.inc (172.21.101.129) by MTKMBS62N2.mediatek.inc (172.29.193.42) with Microsoft SMTP Server (TLS) id 15.0.1497.2; Thu, 8 Apr 2021 02:35:21 -0700 Received: from mtkcas11.mediatek.inc (172.21.101.40) by mtkmbs06n1.mediatek.inc (172.21.101.129) with Microsoft SMTP Server (TLS) id 15.0.1497.2; Thu, 8 Apr 2021 17:35:19 +0800 Received: from localhost.localdomain (10.17.3.153) by mtkcas11.mediatek.inc (172.21.101.73) with Microsoft SMTP Server id 15.0.1497.2 via Frontend Transport; Thu, 8 Apr 2021 17:35:18 +0800 From: Chunfeng Yun To: Rob Herring , Mathias Nyman CC: Chunfeng Yun , Greg Kroah-Hartman , Matthias Brugger , "Rafael J. Wysocki" , Len Brown , Pavel Machek , , , , , , , Tony Lindgren , Tianping Fang , Eddie Hung , "Ikjoon Jang" , Nicolas Boichat Subject: [PATCH 2/6] usb: xhci-mtk: check return value in suspend/resume hooks Date: Thu, 8 Apr 2021 17:35:10 +0800 Message-ID: <1617874514-12282-2-git-send-email-chunfeng.yun@mediatek.com> X-Mailer: git-send-email 1.8.1.1.dirty In-Reply-To: <1617874514-12282-1-git-send-email-chunfeng.yun@mediatek.com> References: <1617874514-12282-1-git-send-email-chunfeng.yun@mediatek.com> MIME-Version: 1.0 X-MTK: N X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20210408_103526_691921_CB6411C2 X-CRM114-Status: GOOD ( 14.50 ) 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 Return error number if encounter errors during suspend and resume. Signed-off-by: Chunfeng Yun --- drivers/usb/host/xhci-mtk.c | 37 +++++++++++++++++++++++++++---------- 1 file changed, 27 insertions(+), 10 deletions(-) diff --git a/drivers/usb/host/xhci-mtk.c b/drivers/usb/host/xhci-mtk.c index c1bc40289833..a74764ab914a 100644 --- a/drivers/usb/host/xhci-mtk.c +++ b/drivers/usb/host/xhci-mtk.c @@ -630,18 +630,12 @@ static int xhci_mtk_remove(struct platform_device *dev) return 0; } -/* - * if ip sleep fails, and all clocks are disabled, access register will hang - * AHB bus, so stop polling roothubs to avoid regs access on bus suspend. - * and no need to check whether ip sleep failed or not; this will cause SPM - * to wake up system immediately after system suspend complete if ip sleep - * fails, it is what we wanted. - */ static int __maybe_unused xhci_mtk_suspend(struct device *dev) { struct xhci_hcd_mtk *mtk = dev_get_drvdata(dev); struct usb_hcd *hcd = mtk->hcd; struct xhci_hcd *xhci = hcd_to_xhci(hcd); + int ret; xhci_dbg(xhci, "%s: stop port polling\n", __func__); clear_bit(HCD_FLAG_POLL_RH, &hcd->flags); @@ -649,10 +643,21 @@ static int __maybe_unused xhci_mtk_suspend(struct device *dev) clear_bit(HCD_FLAG_POLL_RH, &xhci->shared_hcd->flags); del_timer_sync(&xhci->shared_hcd->rh_timer); - xhci_mtk_host_disable(mtk); + ret = xhci_mtk_host_disable(mtk); + if (ret) + goto restart_poll_rh; + xhci_mtk_clks_disable(mtk); usb_wakeup_set(mtk, true); return 0; + +restart_poll_rh: + xhci_dbg(xhci, "%s: restart port polling\n", __func__); + set_bit(HCD_FLAG_POLL_RH, &xhci->shared_hcd->flags); + usb_hcd_poll_rh_status(xhci->shared_hcd); + set_bit(HCD_FLAG_POLL_RH, &hcd->flags); + usb_hcd_poll_rh_status(hcd); + return ret; } static int __maybe_unused xhci_mtk_resume(struct device *dev) @@ -660,10 +665,16 @@ static int __maybe_unused xhci_mtk_resume(struct device *dev) struct xhci_hcd_mtk *mtk = dev_get_drvdata(dev); struct usb_hcd *hcd = mtk->hcd; struct xhci_hcd *xhci = hcd_to_xhci(hcd); + int ret; usb_wakeup_set(mtk, false); - xhci_mtk_clks_enable(mtk); - xhci_mtk_host_enable(mtk); + ret = xhci_mtk_clks_enable(mtk); + if (ret) + goto enable_wakeup; + + ret = xhci_mtk_host_enable(mtk); + if (ret) + goto disable_clks; xhci_dbg(xhci, "%s: restart port polling\n", __func__); set_bit(HCD_FLAG_POLL_RH, &xhci->shared_hcd->flags); @@ -671,6 +682,12 @@ static int __maybe_unused xhci_mtk_resume(struct device *dev) set_bit(HCD_FLAG_POLL_RH, &hcd->flags); usb_hcd_poll_rh_status(hcd); return 0; + +disable_clks: + xhci_mtk_clks_disable(mtk); +enable_wakeup: + usb_wakeup_set(mtk, true); + return ret; } static const struct dev_pm_ops xhci_mtk_pm_ops = { From patchwork Thu Apr 8 09:35:11 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: =?utf-8?b?Q2h1bmZlbmcgWXVuICjkupHmmKXls7Ap?= X-Patchwork-Id: 12190411 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=-16.7 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,UNPARSEABLE_RELAY, URIBL_BLOCKED,USER_AGENT_GIT autolearn=ham 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 44D49C433B4 for ; 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Thu, 8 Apr 2021 17:35:19 +0800 From: Chunfeng Yun To: Rob Herring , Mathias Nyman CC: Chunfeng Yun , Greg Kroah-Hartman , Matthias Brugger , "Rafael J. Wysocki" , Len Brown , Pavel Machek , , , , , , , Tony Lindgren , Tianping Fang , Eddie Hung , "Ikjoon Jang" , Nicolas Boichat Subject: [PATCH 3/6] dt-bindings: usb: mtk-xhci: add wakeup interrupt Date: Thu, 8 Apr 2021 17:35:11 +0800 Message-ID: <1617874514-12282-3-git-send-email-chunfeng.yun@mediatek.com> X-Mailer: git-send-email 1.8.1.1.dirty In-Reply-To: <1617874514-12282-1-git-send-email-chunfeng.yun@mediatek.com> References: <1617874514-12282-1-git-send-email-chunfeng.yun@mediatek.com> MIME-Version: 1.0 X-TM-SNTS-SMTP: 3096B407D65BE384D503761103EF3B00FBD4AE24FB6F11B1529F76C16CC3AC502000:8 X-MTK: N X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20210408_103531_079647_932EF860 X-CRM114-Status: GOOD ( 10.88 ) 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 Add an interrupt which is EINT usually to support runtime PM, meanwhile add "interrupt-names" property, for backward compatibility, it's optional and used when wakeup interrupt exists Signed-off-by: Chunfeng Yun Reviewed-by: Rob Herring --- .../devicetree/bindings/usb/mediatek,mtk-xhci.yaml | 13 ++++++++++++- 1 file changed, 12 insertions(+), 1 deletion(-) diff --git a/Documentation/devicetree/bindings/usb/mediatek,mtk-xhci.yaml b/Documentation/devicetree/bindings/usb/mediatek,mtk-xhci.yaml index 45bf4ea00c9e..4fe8a301d03f 100644 --- a/Documentation/devicetree/bindings/usb/mediatek,mtk-xhci.yaml +++ b/Documentation/devicetree/bindings/usb/mediatek,mtk-xhci.yaml @@ -46,7 +46,18 @@ properties: - const: ippc # optional, only needed for case 1. interrupts: - maxItems: 1 + description: + use "interrupts-extended" when the interrupts are connected to the + separate interrupt controllers + minItems: 1 + items: + - description: xHCI host controller interrupt + - description: optional, wakeup interrupt used to support runtime PM + + interrupt-names: + items: + - const: host + - const: wakeup power-domains: description: A phandle to USB power domain node to control USB's MTCMOS From patchwork Thu Apr 8 09:35:12 2021 Content-Type: text/plain; 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Thu, 08 Apr 2021 02:38:19 -0700 Received: from MTKMBS06N1.mediatek.inc (172.21.101.129) by MTKMBS62N1.mediatek.inc (172.29.193.41) with Microsoft SMTP Server (TLS) id 15.0.1497.2; Thu, 8 Apr 2021 02:35:23 -0700 Received: from mtkcas11.mediatek.inc (172.21.101.40) by mtkmbs06n1.mediatek.inc (172.21.101.129) with Microsoft SMTP Server (TLS) id 15.0.1497.2; Thu, 8 Apr 2021 17:35:21 +0800 Received: from localhost.localdomain (10.17.3.153) by mtkcas11.mediatek.inc (172.21.101.73) with Microsoft SMTP Server id 15.0.1497.2 via Frontend Transport; Thu, 8 Apr 2021 17:35:20 +0800 From: Chunfeng Yun To: Rob Herring , Mathias Nyman CC: Chunfeng Yun , Greg Kroah-Hartman , Matthias Brugger , "Rafael J. Wysocki" , Len Brown , Pavel Machek , , , , , , , Tony Lindgren , Tianping Fang , Eddie Hung , "Ikjoon Jang" , Nicolas Boichat Subject: [PATCH 4/6] usb: xhci-mtk: add support runtime PM Date: Thu, 8 Apr 2021 17:35:12 +0800 Message-ID: <1617874514-12282-4-git-send-email-chunfeng.yun@mediatek.com> X-Mailer: git-send-email 1.8.1.1.dirty In-Reply-To: <1617874514-12282-1-git-send-email-chunfeng.yun@mediatek.com> References: <1617874514-12282-1-git-send-email-chunfeng.yun@mediatek.com> MIME-Version: 1.0 X-MTK: N X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20210408_103825_198352_42069D86 X-CRM114-Status: GOOD ( 24.13 ) 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 A dedicated wakeup irq will be used to handle runtime suspend/resume, we use dev_pm_set_dedicated_wake_irq API to take care of requesting and attaching wakeup irq, then the suspend/resume framework will help to enable/disable wakeup irq. The runtime PM is default off since some platforms may not support it. users can enable it via power/control (set "auto") in sysfs. Signed-off-by: Chunfeng Yun --- drivers/usb/host/xhci-mtk.c | 140 +++++++++++++++++++++++++++++++----- 1 file changed, 124 insertions(+), 16 deletions(-) diff --git a/drivers/usb/host/xhci-mtk.c b/drivers/usb/host/xhci-mtk.c index a74764ab914a..30927f4064d4 100644 --- a/drivers/usb/host/xhci-mtk.c +++ b/drivers/usb/host/xhci-mtk.c @@ -16,6 +16,7 @@ #include #include #include +#include #include #include @@ -358,7 +359,6 @@ static int usb_wakeup_of_property_parse(struct xhci_hcd_mtk *mtk, mtk->uwk_reg_base, mtk->uwk_vers); return PTR_ERR_OR_ZERO(mtk->uwk); - } static void usb_wakeup_set(struct xhci_hcd_mtk *mtk, bool enable) @@ -458,6 +458,7 @@ static int xhci_mtk_probe(struct platform_device *pdev) struct resource *res; struct usb_hcd *hcd; int ret = -ENODEV; + int wakeup_irq; int irq; if (usb_disabled()) @@ -485,6 +486,21 @@ static int xhci_mtk_probe(struct platform_device *pdev) if (ret) return ret; + irq = platform_get_irq_byname_optional(pdev, "host"); + if (irq < 0) { + if (irq == -EPROBE_DEFER) + return irq; + + /* for backward compatibility */ + irq = platform_get_irq(pdev, 0); + if (irq < 0) + return irq; + } + + wakeup_irq = platform_get_irq_byname_optional(pdev, "wakeup"); + if (wakeup_irq == -EPROBE_DEFER) + return wakeup_irq; + mtk->lpm_support = of_property_read_bool(node, "usb3-lpm-capable"); /* optional property, ignore the error if it does not exist */ of_property_read_u32(node, "mediatek,u3p-dis-msk", @@ -496,9 +512,11 @@ static int xhci_mtk_probe(struct platform_device *pdev) return ret; } + pm_runtime_set_active(dev); + pm_runtime_use_autosuspend(dev); + pm_runtime_set_autosuspend_delay(dev, 4000); pm_runtime_enable(dev); pm_runtime_get_sync(dev); - device_enable_async_suspend(dev); ret = xhci_mtk_ldos_enable(mtk); if (ret) @@ -508,12 +526,6 @@ static int xhci_mtk_probe(struct platform_device *pdev) if (ret) goto disable_ldos; - irq = platform_get_irq(pdev, 0); - if (irq < 0) { - ret = irq; - goto disable_clk; - } - hcd = usb_create_hcd(driver, dev, dev_name(dev)); if (!hcd) { ret = -ENOMEM; @@ -579,8 +591,26 @@ static int xhci_mtk_probe(struct platform_device *pdev) if (ret) goto dealloc_usb2_hcd; + if (wakeup_irq > 0) { + ret = dev_pm_set_dedicated_wake_irq(dev, wakeup_irq); + if (ret) { + dev_err(dev, "set wakeup irq %d failed\n", wakeup_irq); + goto dealloc_usb3_hcd; + } + dev_info(dev, "wakeup irq %d\n", wakeup_irq); + } + + device_enable_async_suspend(dev); + pm_runtime_mark_last_busy(dev); + pm_runtime_put_autosuspend(dev); + pm_runtime_forbid(dev); + return 0; +dealloc_usb3_hcd: + usb_remove_hcd(xhci->shared_hcd); + xhci->shared_hcd = NULL; + dealloc_usb2_hcd: usb_remove_hcd(hcd); @@ -601,25 +631,26 @@ static int xhci_mtk_probe(struct platform_device *pdev) xhci_mtk_ldos_disable(mtk); disable_pm: - pm_runtime_put_sync(dev); + pm_runtime_put_sync_autosuspend(dev); pm_runtime_disable(dev); return ret; } -static int xhci_mtk_remove(struct platform_device *dev) +static int xhci_mtk_remove(struct platform_device *pdev) { - struct xhci_hcd_mtk *mtk = platform_get_drvdata(dev); + struct xhci_hcd_mtk *mtk = platform_get_drvdata(pdev); struct usb_hcd *hcd = mtk->hcd; struct xhci_hcd *xhci = hcd_to_xhci(hcd); struct usb_hcd *shared_hcd = xhci->shared_hcd; + struct device *dev = &pdev->dev; - pm_runtime_put_noidle(&dev->dev); - pm_runtime_disable(&dev->dev); + pm_runtime_get_sync(dev); + xhci->xhc_state |= XHCI_STATE_REMOVING; + dev_pm_clear_wake_irq(dev); + device_init_wakeup(dev, false); usb_remove_hcd(shared_hcd); xhci->shared_hcd = NULL; - device_init_wakeup(&dev->dev, false); - usb_remove_hcd(hcd); usb_put_hcd(shared_hcd); usb_put_hcd(hcd); @@ -627,6 +658,10 @@ static int xhci_mtk_remove(struct platform_device *dev) xhci_mtk_clks_disable(mtk); xhci_mtk_ldos_disable(mtk); + pm_runtime_disable(dev); + pm_runtime_put_noidle(dev); + pm_runtime_set_suspended(dev); + return 0; } @@ -690,10 +725,83 @@ static int __maybe_unused xhci_mtk_resume(struct device *dev) return ret; } +static int check_rhub_status(struct xhci_hcd *xhci, struct xhci_hub *rhub) +{ + u32 suspended_ports; + u32 status; + int num_ports; + int i; + + num_ports = rhub->num_ports; + suspended_ports = rhub->bus_state.suspended_ports; + for (i = 0; i < num_ports; i++) { + if (!(suspended_ports & BIT(i))) { + status = readl(rhub->ports[i]->addr); + if (status & PORT_CONNECT) + return -EBUSY; + } + } + + return 0; +} + +/* + * check the bus whether it could suspend or not + * the bus will suspend if the downstream ports are already suspended, + * or no devices connected. + */ +static int check_bus_status(struct xhci_hcd *xhci) +{ + int ret; + + ret = check_rhub_status(xhci, &xhci->usb3_rhub); + if (ret) + return ret; + + return check_rhub_status(xhci, &xhci->usb2_rhub); +} + +static int __maybe_unused xhci_mtk_runtime_suspend(struct device *dev) +{ + struct xhci_hcd_mtk *mtk = dev_get_drvdata(dev); + struct xhci_hcd *xhci = hcd_to_xhci(mtk->hcd); + int ret = 0; + + if (xhci->xhc_state) + return -ESHUTDOWN; + + if (device_may_wakeup(dev)) { + ret = check_bus_status(xhci); + if (!ret) + ret = xhci_mtk_suspend(dev); + } + + /* -EBUSY: let PM automatically reschedule another autosuspend */ + return ret ? -EBUSY : 0; +} + +static int __maybe_unused xhci_mtk_runtime_resume(struct device *dev) +{ + struct xhci_hcd_mtk *mtk = dev_get_drvdata(dev); + struct xhci_hcd *xhci = hcd_to_xhci(mtk->hcd); + int ret = 0; + + if (xhci->xhc_state) + return -ESHUTDOWN; + + if (device_may_wakeup(dev)) + ret = xhci_mtk_resume(dev); + + return ret; +} + static const struct dev_pm_ops xhci_mtk_pm_ops = { SET_SYSTEM_SLEEP_PM_OPS(xhci_mtk_suspend, xhci_mtk_resume) + SET_RUNTIME_PM_OPS(xhci_mtk_runtime_suspend, + xhci_mtk_runtime_resume, NULL) }; -#define DEV_PM_OPS IS_ENABLED(CONFIG_PM) ? &xhci_mtk_pm_ops : NULL + +#define DEV_PM_OPS (IS_ENABLED(CONFIG_PM) ? &xhci_mtk_pm_ops : NULL) static const struct of_device_id mtk_xhci_of_match[] = { { .compatible = "mediatek,mt8173-xhci"}, From patchwork Thu Apr 8 09:35:13 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: =?utf-8?b?Q2h1bmZlbmcgWXVuICjkupHmmKXls7Ap?= X-Patchwork-Id: 12190419 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=-16.7 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,UNPARSEABLE_RELAY, 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 36BAAC433ED for ; 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Thu, 8 Apr 2021 17:35:21 +0800 From: Chunfeng Yun To: Rob Herring , Mathias Nyman CC: Chunfeng Yun , Greg Kroah-Hartman , Matthias Brugger , "Rafael J. Wysocki" , Len Brown , Pavel Machek , , , , , , , Tony Lindgren , Tianping Fang , Eddie Hung , "Ikjoon Jang" , Nicolas Boichat Subject: [PATCH 5/6] usb: xhci-mtk: use clock bulk to get clocks Date: Thu, 8 Apr 2021 17:35:13 +0800 Message-ID: <1617874514-12282-5-git-send-email-chunfeng.yun@mediatek.com> X-Mailer: git-send-email 1.8.1.1.dirty In-Reply-To: <1617874514-12282-1-git-send-email-chunfeng.yun@mediatek.com> References: <1617874514-12282-1-git-send-email-chunfeng.yun@mediatek.com> MIME-Version: 1.0 X-TM-SNTS-SMTP: 35884E1CF77416F3359BD1765DBFB508BB3FA0BCEE83CBD35591F1898D4E947D2000:8 X-MTK: N X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20210408_103826_000610_BEC3B49C X-CRM114-Status: GOOD ( 15.28 ) 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 Use clock bulk helpers to get/enable/disable clocks, meanwhile make sys_ck optional, then will be easier to handle clocks. Signed-off-by: Chunfeng Yun --- drivers/usb/host/xhci-mtk.c | 109 +++++++----------------------------- drivers/usb/host/xhci-mtk.h | 10 ++-- 2 files changed, 24 insertions(+), 95 deletions(-) diff --git a/drivers/usb/host/xhci-mtk.c b/drivers/usb/host/xhci-mtk.c index 30927f4064d4..d4c455eecb8d 100644 --- a/drivers/usb/host/xhci-mtk.c +++ b/drivers/usb/host/xhci-mtk.c @@ -7,7 +7,6 @@ * Chunfeng Yun */ -#include #include #include #include @@ -220,89 +219,6 @@ static int xhci_mtk_ssusb_config(struct xhci_hcd_mtk *mtk) return xhci_mtk_host_enable(mtk); } -static int xhci_mtk_clks_get(struct xhci_hcd_mtk *mtk) -{ - struct device *dev = mtk->dev; - - mtk->sys_clk = devm_clk_get(dev, "sys_ck"); - if (IS_ERR(mtk->sys_clk)) { - dev_err(dev, "fail to get sys_ck\n"); - return PTR_ERR(mtk->sys_clk); - } - - mtk->xhci_clk = devm_clk_get_optional(dev, "xhci_ck"); - if (IS_ERR(mtk->xhci_clk)) - return PTR_ERR(mtk->xhci_clk); - - mtk->ref_clk = devm_clk_get_optional(dev, "ref_ck"); - if (IS_ERR(mtk->ref_clk)) - return PTR_ERR(mtk->ref_clk); - - mtk->mcu_clk = devm_clk_get_optional(dev, "mcu_ck"); - if (IS_ERR(mtk->mcu_clk)) - return PTR_ERR(mtk->mcu_clk); - - mtk->dma_clk = devm_clk_get_optional(dev, "dma_ck"); - return PTR_ERR_OR_ZERO(mtk->dma_clk); -} - -static int xhci_mtk_clks_enable(struct xhci_hcd_mtk *mtk) -{ - int ret; - - ret = clk_prepare_enable(mtk->ref_clk); - if (ret) { - dev_err(mtk->dev, "failed to enable ref_clk\n"); - goto ref_clk_err; - } - - ret = clk_prepare_enable(mtk->sys_clk); - if (ret) { - dev_err(mtk->dev, "failed to enable sys_clk\n"); - goto sys_clk_err; - } - - ret = clk_prepare_enable(mtk->xhci_clk); - if (ret) { - dev_err(mtk->dev, "failed to enable xhci_clk\n"); - goto xhci_clk_err; - } - - ret = clk_prepare_enable(mtk->mcu_clk); - if (ret) { - dev_err(mtk->dev, "failed to enable mcu_clk\n"); - goto mcu_clk_err; - } - - ret = clk_prepare_enable(mtk->dma_clk); - if (ret) { - dev_err(mtk->dev, "failed to enable dma_clk\n"); - goto dma_clk_err; - } - - return 0; - -dma_clk_err: - clk_disable_unprepare(mtk->mcu_clk); -mcu_clk_err: - clk_disable_unprepare(mtk->xhci_clk); -xhci_clk_err: - clk_disable_unprepare(mtk->sys_clk); -sys_clk_err: - clk_disable_unprepare(mtk->ref_clk); -ref_clk_err: - return ret; -} - -static void xhci_mtk_clks_disable(struct xhci_hcd_mtk *mtk) -{ - clk_disable_unprepare(mtk->dma_clk); - clk_disable_unprepare(mtk->mcu_clk); - clk_disable_unprepare(mtk->xhci_clk); - clk_disable_unprepare(mtk->sys_clk); - clk_disable_unprepare(mtk->ref_clk); -} - /* only clocks can be turn off for ip-sleep wakeup mode */ static void usb_wakeup_ip_sleep_set(struct xhci_hcd_mtk *mtk, bool enable) { @@ -367,6 +283,19 @@ static void usb_wakeup_set(struct xhci_hcd_mtk *mtk, bool enable) usb_wakeup_ip_sleep_set(mtk, enable); } +static int xhci_mtk_clks_get(struct xhci_hcd_mtk *mtk) +{ + struct clk_bulk_data *clks = mtk->clks; + + clks[0].id = "sys_ck"; + clks[1].id = "xhci_ck"; + clks[2].id = "ref_ck"; + clks[3].id = "mcu_ck"; + clks[4].id = "dma_ck"; + + return devm_clk_bulk_get_optional(mtk->dev, BULK_CLKS_NUM, clks); +} + static int xhci_mtk_ldos_enable(struct xhci_hcd_mtk *mtk) { int ret; @@ -522,7 +451,7 @@ static int xhci_mtk_probe(struct platform_device *pdev) if (ret) goto disable_pm; - ret = xhci_mtk_clks_enable(mtk); + ret = clk_bulk_prepare_enable(BULK_CLKS_NUM, mtk->clks); if (ret) goto disable_ldos; @@ -625,7 +554,7 @@ static int xhci_mtk_probe(struct platform_device *pdev) usb_put_hcd(hcd); disable_clk: - xhci_mtk_clks_disable(mtk); + clk_bulk_disable_unprepare(BULK_CLKS_NUM, mtk->clks); disable_ldos: xhci_mtk_ldos_disable(mtk); @@ -655,7 +584,7 @@ static int xhci_mtk_remove(struct platform_device *pdev) usb_put_hcd(shared_hcd); usb_put_hcd(hcd); xhci_mtk_sch_exit(mtk); - xhci_mtk_clks_disable(mtk); + clk_bulk_disable_unprepare(BULK_CLKS_NUM, mtk->clks); xhci_mtk_ldos_disable(mtk); pm_runtime_disable(dev); @@ -682,7 +611,7 @@ static int __maybe_unused xhci_mtk_suspend(struct device *dev) if (ret) goto restart_poll_rh; - xhci_mtk_clks_disable(mtk); + clk_bulk_disable_unprepare(BULK_CLKS_NUM, mtk->clks); usb_wakeup_set(mtk, true); return 0; @@ -703,7 +632,7 @@ static int __maybe_unused xhci_mtk_resume(struct device *dev) int ret; usb_wakeup_set(mtk, false); - ret = xhci_mtk_clks_enable(mtk); + ret = clk_bulk_prepare_enable(BULK_CLKS_NUM, mtk->clks); if (ret) goto enable_wakeup; @@ -719,7 +648,7 @@ static int __maybe_unused xhci_mtk_resume(struct device *dev) return 0; disable_clks: - xhci_mtk_clks_disable(mtk); + clk_bulk_disable_unprepare(BULK_CLKS_NUM, mtk->clks); enable_wakeup: usb_wakeup_set(mtk, true); return ret; diff --git a/drivers/usb/host/xhci-mtk.h b/drivers/usb/host/xhci-mtk.h index 621ec1a85009..11996edc1967 100644 --- a/drivers/usb/host/xhci-mtk.h +++ b/drivers/usb/host/xhci-mtk.h @@ -9,8 +9,12 @@ #ifndef _XHCI_MTK_H_ #define _XHCI_MTK_H_ +#include + #include "xhci.h" +#define BULK_CLKS_NUM 5 + /** * To simplify scheduler algorithm, set a upper limit for ESIT, * if a synchromous ep's ESIT is larger than @XHCI_MTK_MAX_ESIT, @@ -140,11 +144,7 @@ struct xhci_hcd_mtk { int u3p_dis_msk; struct regulator *vusb33; struct regulator *vbus; - struct clk *sys_clk; /* sys and mac clock */ - struct clk *xhci_clk; - struct clk *ref_clk; - struct clk *mcu_clk; - struct clk *dma_clk; + struct clk_bulk_data clks[BULK_CLKS_NUM]; struct regmap *pericfg; struct phy **phys; int num_phys; From patchwork Thu Apr 8 09:35:14 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: =?utf-8?b?Q2h1bmZlbmcgWXVuICjkupHmmKXls7Ap?= X-Patchwork-Id: 12190437 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=-16.7 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,UNPARSEABLE_RELAY, URIBL_BLOCKED,USER_AGENT_GIT autolearn=ham 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 E8BA6C433ED for ; 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Thu, 8 Apr 2021 17:35:23 +0800 From: Chunfeng Yun To: Rob Herring , Mathias Nyman CC: Chunfeng Yun , Greg Kroah-Hartman , Matthias Brugger , "Rafael J. Wysocki" , Len Brown , Pavel Machek , , , , , , , Tony Lindgren , Tianping Fang , Eddie Hung , "Ikjoon Jang" , Nicolas Boichat Subject: [PATCH 6/6] usb: xhci-mtk: remove unused members Date: Thu, 8 Apr 2021 17:35:14 +0800 Message-ID: <1617874514-12282-6-git-send-email-chunfeng.yun@mediatek.com> X-Mailer: git-send-email 1.8.1.1.dirty In-Reply-To: <1617874514-12282-1-git-send-email-chunfeng.yun@mediatek.com> References: <1617874514-12282-1-git-send-email-chunfeng.yun@mediatek.com> MIME-Version: 1.0 X-MTK: N X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20210408_104447_855254_951B6D4C X-CRM114-Status: GOOD ( 10.04 ) 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 Now some members about phys and wakeup are not used anymore, remove them. Signed-off-by: Chunfeng Yun --- drivers/usb/host/xhci-mtk.h | 3 --- 1 file changed, 3 deletions(-) diff --git a/drivers/usb/host/xhci-mtk.h b/drivers/usb/host/xhci-mtk.h index 11996edc1967..7940593a3445 100644 --- a/drivers/usb/host/xhci-mtk.h +++ b/drivers/usb/host/xhci-mtk.h @@ -145,9 +145,6 @@ struct xhci_hcd_mtk { struct regulator *vusb33; struct regulator *vbus; struct clk_bulk_data clks[BULK_CLKS_NUM]; - struct regmap *pericfg; - struct phy **phys; - int num_phys; bool lpm_support; /* usb remote wakeup */ bool uwk_en;