Merge "USB: dwc3: msm: Fix stop endpoint command timeout issue" (673c265b) · Commits · e / devices / samsung / android_kernel_samsung_msm8916

drivers/usb/dwc3/dwc3-msm.c

+22 −0

Original line number	Diff line number	Diff line
		@@ -2338,6 +2338,27 @@ unreg_chrdev:
		return ret;
		}

		static int msm_dwc3_hsphy_autosuspend(struct usb_phy x, struct device dev,
		int enable_autosuspend)
		{
		struct dwc3_msm *mdwc = dev_get_drvdata(dev->parent->parent);
		struct dwc3 *dwc = dev_get_drvdata(dev->parent);
		u32 reg;

		if (dwc->hsphy_auto_suspend_disable)
		return 0;

		reg = dwc3_msm_read_reg(mdwc->base, DWC3_GUSB2PHYCFG(0));
		if (enable_autosuspend)
		reg \|= DWC3_GUSB2PHYCFG_SUSPHY;
		else
		reg &= ~(DWC3_GUSB2PHYCFG_SUSPHY);

		dwc3_msm_write_reg(mdwc->base, DWC3_GUSB2PHYCFG(0), reg);

		return 0;
		}

		static int dwc3_msm_probe(struct platform_device *pdev)
		{
		struct device_node node = pdev->dev.of_node, dwc3_node;
		@@ -2683,6 +2704,7 @@ static int dwc3_msm_probe(struct platform_device *pdev)
		ret = PTR_ERR(mdwc->hs_phy);
		goto put_dwc3;
		}
		mdwc->hs_phy->set_phy_autosuspend = msm_dwc3_hsphy_autosuspend;

		mdwc->ss_phy = devm_usb_get_phy_by_phandle(&mdwc->dwc3->dev,
		"usb-phy", 1);

drivers/usb/host/xhci-plat.c

+20 −0

Original line number	Diff line number	Diff line
		@@ -15,6 +15,7 @@
		#include <linux/pm_runtime.h>
		#include <linux/module.h>
		#include <linux/slab.h>
		#include <linux/usb/phy.h>

		#include "xhci.h"

		@@ -53,6 +54,20 @@ static int xhci_plat_setup(struct usb_hcd *hcd)
		return xhci_gen_setup(hcd, xhci_plat_quirks);
		}

		static void xhci_plat_phy_autosuspend(struct usb_hcd *hcd,
		int enable_autosuspend)
		{
		struct device *dev = hcd->self.controller;
		struct usb_phy *phy = hcd->phy;

		if (!phy \|\| !phy->set_phy_autosuspend)
		return;

		usb_phy_set_autosuspend(phy, dev, enable_autosuspend);

		return;
		}

		static const struct hc_driver xhci_plat_xhci_driver = {
		.description = "xhci-hcd",
		.product_desc = "xHCI Host Controller",
		@@ -100,6 +115,7 @@ static const struct hc_driver xhci_plat_xhci_driver = {
		.hub_status_data = xhci_hub_status_data,
		.bus_suspend = xhci_bus_suspend,
		.bus_resume = xhci_bus_resume,
		.set_autosuspend = xhci_plat_phy_autosuspend,
		};

		static int xhci_plat_probe(struct platform_device *pdev)
		@@ -110,6 +126,7 @@ static int xhci_plat_probe(struct platform_device *pdev)
		struct usb_hcd *hcd;
		int ret;
		int irq;
		struct usb_phy *phy;

		if (usb_disabled())
		return -ENODEV;
		@@ -159,6 +176,8 @@ static int xhci_plat_probe(struct platform_device *pdev)

		/* USB 2.0 roothub is stored in the platform_device now. */
		hcd = dev_get_drvdata(&pdev->dev);
		phy = devm_usb_get_phy_by_phandle(pdev->dev.parent, "usb-phy", 0);
		hcd->phy = phy;
		xhci = hcd_to_xhci(hcd);
		xhci->shared_hcd = usb_create_shared_hcd(driver, &pdev->dev,
		dev_name(&pdev->dev), hcd);
		@@ -168,6 +187,7 @@ static int xhci_plat_probe(struct platform_device *pdev)
		}

		hcd_to_bus(xhci->shared_hcd)->skip_resume = true;
		xhci->shared_hcd->phy = phy;
		/*
		* Set the xHCI pointer before xhci_plat_setup() (aka hcd_driver.reset)
		* is called by usb_add_hcd().

drivers/usb/host/xhci-ring.c

+4 −0

Original line number	Diff line number	Diff line
		@@ -790,6 +790,8 @@ static void handle_stopped_endpoint(struct xhci_hcd *xhci,

		struct xhci_dequeue_state deq_state;

		if (xhci->main_hcd->driver->set_autosuspend)
		xhci->main_hcd->driver->set_autosuspend(xhci->main_hcd, 1);
		if (unlikely(TRB_TO_SUSPEND_PORT(
		le32_to_cpu(xhci->cmd_ring->dequeue->generic.field[3])))) {
		slot_id = TRB_TO_SLOT_ID(
		@@ -952,6 +954,8 @@ void xhci_stop_endpoint_command_watchdog(unsigned long arg)

		spin_lock_irqsave(&xhci->lock, flags);

		if (xhci->main_hcd->driver->set_autosuspend)
		xhci->main_hcd->driver->set_autosuspend(xhci->main_hcd, 1);
		ep->stop_cmds_pending--;
		if (xhci->xhc_state & XHCI_STATE_DYING) {
		xhci_dbg(xhci, "Stop EP timer ran, but another timer marked "

drivers/usb/host/xhci.c

+2 −0

Original line number	Diff line number	Diff line
		@@ -1563,6 +1563,8 @@ int xhci_urb_dequeue(struct usb_hcd hcd, struct urb urb, int status)
		ep->stop_cmd_timer.expires = jiffies +
		XHCI_STOP_EP_CMD_TIMEOUT * HZ;
		add_timer(&ep->stop_cmd_timer);
		if (hcd->driver->set_autosuspend)
		hcd->driver->set_autosuspend(hcd, 0);
		xhci_queue_stop_endpoint(xhci, urb->dev->slot_id, ep_index, 0);
		xhci_ring_cmd_db(xhci);
		}

include/linux/usb/hcd.h

+1 −0

Original line number	Diff line number	Diff line
		@@ -366,6 +366,7 @@ struct hc_driver {
		void (dump_regs)(struct usb_hcd );
		void (set_autosuspend_delay)(struct usb_device );
		void (reset_sof_bug_handler)(struct usb_hcd hcd, u32 val);
		void (set_autosuspend)(struct usb_hcd hcd, int enable_autosuspend);
		};

		extern int usb_hcd_link_urb_to_ep(struct usb_hcd hcd, struct urb urb);