Merge tag 'usb-5.10-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb

Pull USB/PHY/Thunderbolt driver updates from Greg KH:
 "Here is the big set of USB, PHY, and Thunderbolt driver updates for
  5.10-rc1.

  Lots of tiny different things for these subsystems are in here,
  including:

   - phy driver updates

   - thunderbolt / USB 4 updates and additions

   - USB gadget driver updates

   - xhci fixes and updates

   - typec driver additions and updates

   - api conversions to various drivers for core kernel api changes

   - new USB control message functions to make it harder to get wrong,
     as found by syzbot (took 2 tries to get it right)

   - lots of tiny USB driver fixes and updates all over the place

  All of these have been in linux-next for a while, with the exception
  of the last "obviously correct" patch that updated a FALLTHROUGH
  comment that got merged last weekend"

* tag 'usb-5.10-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb: (374 commits)
  usb: musb: gadget: Use fallthrough pseudo-keyword
  usb: typec: Add QCOM PMIC typec detection driver
  USB: serial: option: add Cellient MPL200 card
  usb: typec: tcpci_maxim: Add support for Sink FRS
  usb: typec: tcpci: Implement callbacks for FRS
  usb: typec: tcpm: Add support for Sink Fast Role SWAP(FRS)
  usb: typec: tcpci_maxim: Chip level TCPC driver
  usb: typec: tcpci: Add set_vbus tcpci callback
  usb: typec: tcpci: Add a getter method to retrieve tcpm_port reference
  usbip: vhci_hcd: fix calling usb_hcd_giveback_urb() with irqs enabled
  usb: cdc-acm: add quirk to blacklist ETAS ES58X devices
  USB: serial: ftdi_sio: use cur_altsetting for consistency
  USB: serial: option: Add Telit FT980-KS composition
  USB: core: remove polling for /sys/kernel/debug/usb/devices
  usb: typec: add support for STUSB160x Type-C controller family
  usb: typec: add typec_find_pwr_opmode
  usb: typec: hd3ss3220: Use OF graph API to get the connector fwnode
  dt-bindings: usb: renesas,usb3-peri: Document HS and SS data bus
  dt-bindings: usb: convert ti,hd3ss3220 bindings to json-schema
  usb: dwc2: Fix INTR OUT transfers in DDMA mode.
  ...

21 files changed, 273 insertions, 153 deletions

diff --git a/drivers/usb/host/bcma-hcd.c b/drivers/usb/host/bcma-hcd.c
index b1b777f33521..337b425dd4b0 100644
--- a/drivers/usb/host/bcma-hcd.c
+++ b/drivers/usb/host/bcma-hcd.c
@@ -498,15 +498,4 @@ static struct bcma_driver bcma_hcd_driver = {
 	.suspend	= bcma_hcd_suspend,
 	.resume		= bcma_hcd_resume,
 };
-
-static int __init bcma_hcd_init(void)
-{
-	return bcma_driver_register(&bcma_hcd_driver);
-}
-module_init(bcma_hcd_init);
-
-static void __exit bcma_hcd_exit(void)
-{
-	bcma_driver_unregister(&bcma_hcd_driver);
-}
-module_exit(bcma_hcd_exit);
+module_bcma_driver(bcma_hcd_driver);
diff --git a/drivers/usb/host/ehci-npcm7xx.c b/drivers/usb/host/ehci-npcm7xx.c
index adaf8fb4b459..6b5a7a873e01 100644
--- a/drivers/usb/host/ehci-npcm7xx.c
+++ b/drivers/usb/host/ehci-npcm7xx.c
@@ -37,8 +37,7 @@ static const char hcd_name[] = "npcm7xx-ehci";
 
 static struct hc_driver __read_mostly ehci_npcm7xx_hc_driver;
 
-#ifdef CONFIG_PM_SLEEP
-static int ehci_npcm7xx_drv_suspend(struct device *dev)
+static int __maybe_unused ehci_npcm7xx_drv_suspend(struct device *dev)
 {
 	struct usb_hcd *hcd = dev_get_drvdata(dev);
 	bool do_wakeup = device_may_wakeup(dev);
@@ -46,14 +45,13 @@ static int ehci_npcm7xx_drv_suspend(struct device *dev)
 	return ehci_suspend(hcd, do_wakeup);
 }
 
-static int ehci_npcm7xx_drv_resume(struct device *dev)
+static int __maybe_unused ehci_npcm7xx_drv_resume(struct device *dev)
 {
 	struct usb_hcd *hcd = dev_get_drvdata(dev);
 
 	ehci_resume(hcd, false);
 	return 0;
 }
-#endif /* CONFIG_PM_SLEEP */
 
 static SIMPLE_DEV_PM_OPS(ehci_npcm7xx_pm_ops, ehci_npcm7xx_drv_suspend,
 		ehci_npcm7xx_drv_resume);
@@ -183,7 +181,7 @@ static struct platform_driver npcm7xx_ehci_hcd_driver = {
 	.driver		= {
 		.name = "npcm7xx-ehci",
 		.bus = &platform_bus_type,
-		.pm = &ehci_npcm7xx_pm_ops,
+		.pm = pm_ptr(&ehci_npcm7xx_pm_ops),
 		.of_match_table = npcm7xx_ehci_id_table,
 	}
 };
diff --git a/drivers/usb/host/ehci-platform.c b/drivers/usb/host/ehci-platform.c
index 006c4f6188a5..a48dd3fac153 100644
--- a/drivers/usb/host/ehci-platform.c
+++ b/drivers/usb/host/ehci-platform.c
@@ -42,6 +42,9 @@
 #define EHCI_MAX_CLKS 4
 #define hcd_to_ehci_priv(h) ((struct ehci_platform_priv *)hcd_to_ehci(h)->priv)
 
+#define BCM_USB_FIFO_THRESHOLD	0x00800040
+#define bcm_iproc_insnreg01	hostpc[0]
+
 struct ehci_platform_priv {
 	struct clk *clks[EHCI_MAX_CLKS];
 	struct reset_control *rsts;
@@ -75,6 +78,11 @@ static int ehci_platform_reset(struct usb_hcd *hcd)
 
 	if (pdata->no_io_watchdog)
 		ehci->need_io_watchdog = 0;
+
+	if (of_device_is_compatible(pdev->dev.of_node, "brcm,xgs-iproc-ehci"))
+		ehci_writel(ehci, BCM_USB_FIFO_THRESHOLD,
+			    &ehci->regs->bcm_iproc_insnreg01);
+
 	return 0;
 }
 
@@ -410,8 +418,7 @@ static int ehci_platform_remove(struct platform_device *dev)
 	return 0;
 }
 
-#ifdef CONFIG_PM_SLEEP
-static int ehci_platform_suspend(struct device *dev)
+static int __maybe_unused ehci_platform_suspend(struct device *dev)
 {
 	struct usb_hcd *hcd = dev_get_drvdata(dev);
 	struct usb_ehci_pdata *pdata = dev_get_platdata(dev);
@@ -433,7 +440,7 @@ static int ehci_platform_suspend(struct device *dev)
 	return ret;
 }
 
-static int ehci_platform_resume(struct device *dev)
+static int __maybe_unused ehci_platform_resume(struct device *dev)
 {
 	struct usb_hcd *hcd = dev_get_drvdata(dev);
 	struct usb_ehci_pdata *pdata = dev_get_platdata(dev);
@@ -464,7 +471,6 @@ static int ehci_platform_resume(struct device *dev)
 
 	return 0;
 }
-#endif /* CONFIG_PM_SLEEP */
 
 static const struct of_device_id vt8500_ehci_ids[] = {
 	{ .compatible = "via,vt8500-ehci", },
@@ -499,7 +505,7 @@ static struct platform_driver ehci_platform_driver = {
 	.shutdown	= usb_hcd_platform_shutdown,
 	.driver		= {
 		.name	= "ehci-platform",
-		.pm	= &ehci_platform_pm_ops,
+		.pm	= pm_ptr(&ehci_platform_pm_ops),
 		.of_match_table = vt8500_ehci_ids,
 		.acpi_match_table = ACPI_PTR(ehci_acpi_match),
 	}
diff --git a/drivers/usb/host/ehci-sched.c b/drivers/usb/host/ehci-sched.c
index 847979f265b1..6dfb242f9a4b 100644
--- a/drivers/usb/host/ehci-sched.c
+++ b/drivers/usb/host/ehci-sched.c
@@ -307,26 +307,6 @@ static int __maybe_unused same_tt(struct usb_device *dev1,
 
 #ifdef CONFIG_USB_EHCI_TT_NEWSCHED
 
-/* Which uframe does the low/fullspeed transfer start in?
- *
- * The parameter is the mask of ssplits in "H-frame" terms
- * and this returns the transfer start uframe in "B-frame" terms,
- * which allows both to match, e.g. a ssplit in "H-frame" uframe 0
- * will cause a transfer in "B-frame" uframe 0.  "B-frames" lag
- * "H-frames" by 1 uframe.  See the EHCI spec sec 4.5 and figure 4.7.
- */
-static inline unsigned char tt_start_uframe(struct ehci_hcd *ehci, __hc32 mask)
-{
-	unsigned char smask = hc32_to_cpu(ehci, mask) & QH_SMASK;
-
-	if (!smask) {
-		ehci_err(ehci, "invalid empty smask!\n");
-		/* uframe 7 can't have bw so this will indicate failure */
-		return 7;
-	}
-	return ffs(smask) - 1;
-}
-
 static const unsigned char
 max_tt_usecs[] = { 125, 125, 125, 125, 125, 125, 30, 0 };
 
diff --git a/drivers/usb/host/ehci-spear.c b/drivers/usb/host/ehci-spear.c
index add796c78561..3694e450a11a 100644
--- a/drivers/usb/host/ehci-spear.c
+++ b/drivers/usb/host/ehci-spear.c
@@ -34,8 +34,7 @@ struct spear_ehci {
 
 static struct hc_driver __read_mostly ehci_spear_hc_driver;
 
-#ifdef CONFIG_PM_SLEEP
-static int ehci_spear_drv_suspend(struct device *dev)
+static int __maybe_unused ehci_spear_drv_suspend(struct device *dev)
 {
 	struct usb_hcd *hcd = dev_get_drvdata(dev);
 	bool do_wakeup = device_may_wakeup(dev);
@@ -43,14 +42,13 @@ static int ehci_spear_drv_suspend(struct device *dev)
 	return ehci_suspend(hcd, do_wakeup);
 }
 
-static int ehci_spear_drv_resume(struct device *dev)
+static int __maybe_unused ehci_spear_drv_resume(struct device *dev)
 {
 	struct usb_hcd *hcd = dev_get_drvdata(dev);
 
 	ehci_resume(hcd, false);
 	return 0;
 }
-#endif /* CONFIG_PM_SLEEP */
 
 static SIMPLE_DEV_PM_OPS(ehci_spear_pm_ops, ehci_spear_drv_suspend,
 		ehci_spear_drv_resume);
@@ -155,7 +153,7 @@ static struct platform_driver spear_ehci_hcd_driver = {
 	.driver		= {
 		.name = "spear-ehci",
 		.bus = &platform_bus_type,
-		.pm = &ehci_spear_pm_ops,
+		.pm = pm_ptr(&ehci_spear_pm_ops),
 		.of_match_table = spear_ehci_id_table,
 	}
 };
diff --git a/drivers/usb/host/fotg210-hcd.c b/drivers/usb/host/fotg210-hcd.c
index 194df8282471..1d94fcfac2c2 100644
--- a/drivers/usb/host/fotg210-hcd.c
+++ b/drivers/usb/host/fotg210-hcd.c
@@ -32,6 +32,7 @@
 #include <linux/uaccess.h>
 #include <linux/platform_device.h>
 #include <linux/io.h>
+#include <linux/iopoll.h>
 #include <linux/clk.h>
 
 #include <asm/byteorder.h>
@@ -883,18 +884,15 @@ static int handshake(struct fotg210_hcd *fotg210, void __iomem *ptr,
 		u32 mask, u32 done, int usec)
 {
 	u32 result;
+	int ret;
 
-	do {
-		result = fotg210_readl(fotg210, ptr);
-		if (result == ~(u32)0)		/* card removed */
-			return -ENODEV;
-		result &= mask;
-		if (result == done)
-			return 0;
-		udelay(1);
-		usec--;
-	} while (usec > 0);
-	return -ETIMEDOUT;
+	ret = readl_poll_timeout_atomic(ptr, result,
+					((result & mask) == done ||
+					 result == U32_MAX), 1, usec);
+	if (result == U32_MAX)		/* card removed */
+		return -ENODEV;
+
+	return ret;
 }
 
 /* Force HC to halt state from unknown (EHCI spec section 2.3).
diff --git a/drivers/usb/host/ohci-hcd.c b/drivers/usb/host/ohci-hcd.c
index dd37e77dae00..73e13e7c2b46 100644
--- a/drivers/usb/host/ohci-hcd.c
+++ b/drivers/usb/host/ohci-hcd.c
@@ -102,7 +102,7 @@ static void io_watchdog_func(struct timer_list *t);
 
 
 /* Some boards misreport power switching/overcurrent */
-static bool distrust_firmware = true;
+static bool distrust_firmware;
 module_param (distrust_firmware, bool, 0);
 MODULE_PARM_DESC (distrust_firmware,
 	"true to distrust firmware power/overcurrent setup");
@@ -673,20 +673,24 @@ retry:
 
 	/* handle root hub init quirks ... */
 	val = roothub_a (ohci);
-	val &= ~(RH_A_PSM | RH_A_OCPM);
+	/* Configure for per-port over-current protection by default */
+	val &= ~RH_A_NOCP;
+	val |= RH_A_OCPM;
 	if (ohci->flags & OHCI_QUIRK_SUPERIO) {
-		/* NSC 87560 and maybe others */
+		/* NSC 87560 and maybe others.
+		 * Ganged power switching, no over-current protection.
+		 */
 		val |= RH_A_NOCP;
-		val &= ~(RH_A_POTPGT | RH_A_NPS);
-		ohci_writel (ohci, val, &ohci->regs->roothub.a);
+		val &= ~(RH_A_POTPGT | RH_A_NPS | RH_A_PSM | RH_A_OCPM);
 	} else if ((ohci->flags & OHCI_QUIRK_AMD756) ||
 			(ohci->flags & OHCI_QUIRK_HUB_POWER)) {
 		/* hub power always on; required for AMD-756 and some
-		 * Mac platforms.  ganged overcurrent reporting, if any.
+		 * Mac platforms.
 		 */
 		val |= RH_A_NPS;
-		ohci_writel (ohci, val, &ohci->regs->roothub.a);
 	}
+	ohci_writel(ohci, val, &ohci->regs->roothub.a);
+
 	ohci_writel (ohci, RH_HS_LPSC, &ohci->regs->roothub.status);
 	ohci_writel (ohci, (val & RH_A_NPS) ? 0 : RH_B_PPCM,
 						&ohci->regs->roothub.b);
diff --git a/drivers/usb/host/oxu210hp-hcd.c b/drivers/usb/host/oxu210hp-hcd.c
index cfa7dd2cc7d3..27dbbe1b28b1 100644
--- a/drivers/usb/host/oxu210hp-hcd.c
+++ b/drivers/usb/host/oxu210hp-hcd.c
@@ -24,6 +24,7 @@
 #include <linux/moduleparam.h>
 #include <linux/dma-mapping.h>
 #include <linux/io.h>
+#include <linux/iopoll.h>
 
 #include <asm/irq.h>
 #include <asm/unaligned.h>
@@ -748,18 +749,16 @@ static int handshake(struct oxu_hcd *oxu, void __iomem *ptr,
 					u32 mask, u32 done, int usec)
 {
 	u32 result;
+	int ret;
 
-	do {
-		result = readl(ptr);
-		if (result == ~(u32)0)		/* card removed */
-			return -ENODEV;
-		result &= mask;
-		if (result == done)
-			return 0;
-		udelay(1);
-		usec--;
-	} while (usec > 0);
-	return -ETIMEDOUT;
+	ret = readl_poll_timeout_atomic(ptr, result,
+					((result & mask) == done ||
+					 result == U32_MAX),
+					1, usec);
+	if (result == U32_MAX)		/* card removed */
+		return -ENODEV;
+
+	return ret;
 }
 
 /* Force HC to halt state from unknown (EHCI spec section 2.3) */
diff --git a/drivers/usb/host/pci-quirks.c b/drivers/usb/host/pci-quirks.c
index 8c1bbac6d136..ef08d68b9714 100644
--- a/drivers/usb/host/pci-quirks.c
+++ b/drivers/usb/host/pci-quirks.c
@@ -16,8 +16,8 @@
 #include <linux/export.h>
 #include <linux/acpi.h>
 #include <linux/dmi.h>
-
-#include <soc/bcm2835/raspberrypi-firmware.h>
+#include <linux/of.h>
+#include <linux/iopoll.h>
 
 #include "pci-quirks.h"
 #include "xhci-ext-caps.h"
@@ -1013,15 +1013,9 @@ static int handshake(void __iomem *ptr, u32 mask, u32 done,
 {
 	u32	result;
 
-	do {
-		result = readl(ptr);
-		result &= mask;
-		if (result == done)
-			return 0;
-		udelay(delay_usec);
-		wait_usec -= delay_usec;
-	} while (wait_usec > 0);
-	return -ETIMEDOUT;
+	return readl_poll_timeout_atomic(ptr, result,
+					 ((result & mask) == done),
+					 delay_usec, wait_usec);
 }
 
 /*
@@ -1247,7 +1241,8 @@ iounmap:
 
 static void quirk_usb_early_handoff(struct pci_dev *pdev)
 {
-	int ret;
+	struct device_node *parent;
+	bool is_rpi;
 
 	/* Skip Netlogic mips SoC's internal PCI USB controller.
 	 * This device does not need/support EHCI/OHCI handoff
@@ -1255,14 +1250,16 @@ static void quirk_usb_early_handoff(struct pci_dev *pdev)
 	if (pdev->vendor == 0x184e)	/* vendor Netlogic */
 		return;
 
+	/*
+	 * Bypass the Raspberry Pi 4 controller xHCI controller, things are
+	 * taken care of by the board's co-processor.
+	 */
 	if (pdev->vendor == PCI_VENDOR_ID_VIA && pdev->device == 0x3483) {
-		ret = rpi_firmware_init_vl805(pdev);
-		if (ret) {
-			/* Firmware might be outdated, or something failed */
-			dev_warn(&pdev->dev,
-				 "Failed to load VL805's firmware: %d. Will continue to attempt to work, but bad things might happen. You should fix this...\n",
-				 ret);
-		}
+		parent = of_get_parent(pdev->bus->dev.of_node);
+		is_rpi = of_device_is_compatible(parent, "brcm,bcm2711-pcie");
+		of_node_put(parent);
+		if (is_rpi)
+			return;
 	}
 
 	if (pdev->class != PCI_CLASS_SERIAL_USB_UHCI &&
diff --git a/drivers/usb/host/xhci-dbgtty.c b/drivers/usb/host/xhci-dbgtty.c
index b8918f73a432..ae4e4ab638b5 100644
--- a/drivers/usb/host/xhci-dbgtty.c
+++ b/drivers/usb/host/xhci-dbgtty.c
@@ -288,14 +288,14 @@ static const struct tty_operations dbc_tty_ops = {
 	.unthrottle		= dbc_tty_unthrottle,
 };
 
-static void dbc_rx_push(unsigned long _port)
+static void dbc_rx_push(struct tasklet_struct *t)
 {
 	struct dbc_request	*req;
 	struct tty_struct	*tty;
 	unsigned long		flags;
 	bool			do_push = false;
 	bool			disconnect = false;
-	struct dbc_port		*port = (void *)_port;
+	struct dbc_port		*port = from_tasklet(port, t, push);
 	struct list_head	*queue = &port->read_queue;
 
 	spin_lock_irqsave(&port->port_lock, flags);
@@ -382,7 +382,7 @@ xhci_dbc_tty_init_port(struct xhci_dbc *dbc, struct dbc_port *port)
 {
 	tty_port_init(&port->port);
 	spin_lock_init(&port->port_lock);
-	tasklet_init(&port->push, dbc_rx_push, (unsigned long)port);
+	tasklet_setup(&port->push, dbc_rx_push);
 	INIT_LIST_HEAD(&port->read_pool);
 	INIT_LIST_HEAD(&port->read_queue);
 	INIT_LIST_HEAD(&port->write_pool);
diff --git a/drivers/usb/host/xhci-debugfs.c b/drivers/usb/host/xhci-debugfs.c
index c88bffd68742..2c0fda57869e 100644
--- a/drivers/usb/host/xhci-debugfs.c
+++ b/drivers/usb/host/xhci-debugfs.c
@@ -451,9 +451,11 @@ void xhci_debugfs_create_endpoint(struct xhci_hcd *xhci,
 	if (!epriv)
 		return;
 
+	epriv->show_ring = dev->eps[ep_index].ring;
+
 	snprintf(epriv->name, sizeof(epriv->name), "ep%02d", ep_index);
 	epriv->root = xhci_debugfs_create_ring_dir(xhci,
-						   &dev->eps[ep_index].ring,
+						   &epriv->show_ring,
 						   epriv->name,
 						   spriv->root);
 	spriv->eps[ep_index] = epriv;
@@ -475,6 +477,111 @@ void xhci_debugfs_remove_endpoint(struct xhci_hcd *xhci,
 	kfree(epriv);
 }
 
+static int xhci_stream_id_show(struct seq_file *s, void *unused)
+{
+	struct xhci_ep_priv	*epriv = s->private;
+
+	if (!epriv->stream_info)
+		return -EPERM;
+
+	seq_printf(s, "Show stream ID %d trb ring, supported [1 - %d]\n",
+		   epriv->stream_id, epriv->stream_info->num_streams - 1);
+
+	return 0;
+}
+
+static int xhci_stream_id_open(struct inode *inode, struct file *file)
+{
+	return single_open(file, xhci_stream_id_show, inode->i_private);
+}
+
+static ssize_t xhci_stream_id_write(struct file *file,  const char __user *ubuf,
+			       size_t count, loff_t *ppos)
+{
+	struct seq_file         *s = file->private_data;
+	struct xhci_ep_priv	*epriv = s->private;
+	int			ret;
+	u16			stream_id; /* MaxPStreams + 1 <= 16 */
+
+	if (!epriv->stream_info)
+		return -EPERM;
+
+	/* Decimal number */
+	ret = kstrtou16_from_user(ubuf, count, 10, &stream_id);
+	if (ret)
+		return ret;
+
+	if (stream_id == 0 || stream_id >= epriv->stream_info->num_streams)
+		return -EINVAL;
+
+	epriv->stream_id = stream_id;
+	epriv->show_ring = epriv->stream_info->stream_rings[stream_id];
+
+	return count;
+}
+
+static const struct file_operations stream_id_fops = {
+	.open			= xhci_stream_id_open,
+	.write                  = xhci_stream_id_write,
+	.read			= seq_read,
+	.llseek			= seq_lseek,
+	.release		= single_release,
+};
+
+static int xhci_stream_context_array_show(struct seq_file *s, void *unused)
+{
+	struct xhci_ep_priv	*epriv = s->private;
+	struct xhci_stream_ctx	*stream_ctx;
+	dma_addr_t		dma;
+	int			id;
+
+	if (!epriv->stream_info)
+		return -EPERM;
+
+	seq_printf(s, "Allocated %d streams and %d stream context array entries\n",
+			epriv->stream_info->num_streams,
+			epriv->stream_info->num_stream_ctxs);
+
+	for (id = 0; id < epriv->stream_info->num_stream_ctxs; id++) {
+		stream_ctx = epriv->stream_info->stream_ctx_array + id;
+		dma = epriv->stream_info->ctx_array_dma + id * 16;
+		if (id < epriv->stream_info->num_streams)
+			seq_printf(s, "%pad stream id %d deq %016llx\n", &dma,
+				   id, le64_to_cpu(stream_ctx->stream_ring));
+		else
+			seq_printf(s, "%pad stream context entry not used deq %016llx\n",
+				   &dma, le64_to_cpu(stream_ctx->stream_ring));
+	}
+
+	return 0;
+}
+DEFINE_SHOW_ATTRIBUTE(xhci_stream_context_array);
+
+void xhci_debugfs_create_stream_files(struct xhci_hcd *xhci,
+				      struct xhci_virt_device *dev,
+				      int ep_index)
+{
+	struct xhci_slot_priv	*spriv = dev->debugfs_private;
+	struct xhci_ep_priv	*epriv;
+
+	if (!spriv || !spriv->eps[ep_index] ||
+	    !dev->eps[ep_index].stream_info)
+		return;
+
+	epriv = spriv->eps[ep_index];
+	epriv->stream_info = dev->eps[ep_index].stream_info;
+
+	/* Show trb ring of stream ID 1 by default */
+	epriv->stream_id = 1;
+	epriv->show_ring = epriv->stream_info->stream_rings[1];
+	debugfs_create_file("stream_id", 0644,
+			    epriv->root, epriv,
+			    &stream_id_fops);
+	debugfs_create_file("stream_context_array", 0444,
+			    epriv->root, epriv,
+			    &xhci_stream_context_array_fops);
+}
+
 void xhci_debugfs_create_slot(struct xhci_hcd *xhci, int slot_id)
 {
 	struct xhci_slot_priv	*priv;
diff --git a/drivers/usb/host/xhci-debugfs.h b/drivers/usb/host/xhci-debugfs.h
index 56db635fcd6e..7c074b4be819 100644
--- a/drivers/usb/host/xhci-debugfs.h
+++ b/drivers/usb/host/xhci-debugfs.h
@@ -91,6 +91,9 @@ struct xhci_file_map {
 struct xhci_ep_priv {
 	char			name[DEBUGFS_NAMELEN];
 	struct dentry		*root;
+	struct xhci_stream_info *stream_info;
+	struct xhci_ring	*show_ring;
+	unsigned int		stream_id;
 };
 
 struct xhci_slot_priv {
@@ -113,6 +116,9 @@ void xhci_debugfs_create_endpoint(struct xhci_hcd *xhci,
 void xhci_debugfs_remove_endpoint(struct xhci_hcd *xhci,
 				  struct xhci_virt_device *virt_dev,
 				  int ep_index);
+void xhci_debugfs_create_stream_files(struct xhci_hcd *xhci,
+				      struct xhci_virt_device *virt_dev,
+				      int ep_index);
 #else
 static inline void xhci_debugfs_init(struct xhci_hcd *xhci) { }
 static inline void xhci_debugfs_exit(struct xhci_hcd *xhci) { }
@@ -128,6 +134,10 @@ static inline void
 xhci_debugfs_remove_endpoint(struct xhci_hcd *xhci,
 			     struct xhci_virt_device *virt_dev,
 			     int ep_index) { }
+static inline void
+xhci_debugfs_create_stream_files(struct xhci_hcd *xhci,
+				 struct xhci_virt_device *virt_dev,
+				 int ep_index) { }
 #endif /* CONFIG_DEBUG_FS */
 
 #endif /* __LINUX_XHCI_DEBUGFS_H */
diff --git a/drivers/usb/host/xhci-mtk.c b/drivers/usb/host/xhci-mtk.c
index 4311d4c9b68d..8f321f39ab96 100644
--- a/drivers/usb/host/xhci-mtk.c
+++ b/drivers/usb/host/xhci-mtk.c
@@ -77,7 +77,7 @@ static int xhci_mtk_host_enable(struct xhci_hcd_mtk *mtk)
 {
 	struct mu3c_ippc_regs __iomem *ippc = mtk->ippc_regs;
 	u32 value, check_val;
-	int u3_ports_disabed = 0;
+	int u3_ports_disabled = 0;
 	int ret;
 	int i;
 
@@ -92,7 +92,7 @@ static int xhci_mtk_host_enable(struct xhci_hcd_mtk *mtk)
 	/* power on and enable u3 ports except skipped ones */
 	for (i = 0; i < mtk->num_u3_ports; i++) {
 		if ((0x1 << i) & mtk->u3p_dis_msk) {
-			u3_ports_disabed++;
+			u3_ports_disabled++;
 			continue;
 		}
 
@@ -117,7 +117,7 @@ static int xhci_mtk_host_enable(struct xhci_hcd_mtk *mtk)
 	check_val = STS1_SYSPLL_STABLE | STS1_REF_RST |
 			STS1_SYS125_RST | STS1_XHCI_RST;
 
-	if (mtk->num_u3_ports > u3_ports_disabed)
+	if (mtk->num_u3_ports > u3_ports_disabled)
 		check_val |= STS1_U3_MAC_RST;
 
 	ret = readl_poll_timeout(&ippc->ip_pw_sts1, value,
diff --git a/drivers/usb/host/xhci-pci.c b/drivers/usb/host/xhci-pci.c
index 3feaafebfe58..c26c06e5c88c 100644
--- a/drivers/usb/host/xhci-pci.c
+++ b/drivers/usb/host/xhci-pci.c
@@ -12,6 +12,7 @@
 #include <linux/slab.h>
 #include <linux/module.h>
 #include <linux/acpi.h>
+#include <linux/reset.h>
 
 #include "xhci.h"
 #include "xhci-trace.h"
@@ -346,6 +347,7 @@ static int xhci_pci_probe(struct pci_dev *dev, const struct pci_device_id *id)
 	struct xhci_hcd *xhci;
 	struct usb_hcd *hcd;
 	struct xhci_driver_data *driver_data;
+	struct reset_control *reset;
 
 	driver_data = (struct xhci_driver_data *)id->driver_data;
 	if (driver_data && driver_data->quirks & XHCI_RENESAS_FW_QUIRK) {
@@ -354,6 +356,11 @@ static int xhci_pci_probe(struct pci_dev *dev, const struct pci_device_id *id)
 			return retval;
 	}
 
+	reset = devm_reset_control_get_optional_exclusive(&dev->dev, NULL);
+	if (IS_ERR(reset))
+		return PTR_ERR(reset);
+	reset_control_reset(reset);
+
 	/* Prevent runtime suspending between USB-2 and USB-3 initialization */
 	pm_runtime_get_noresume(&dev->dev);
 
@@ -371,6 +378,7 @@ static int xhci_pci_probe(struct pci_dev *dev, const struct pci_device_id *id)
 	/* USB 2.0 roothub is stored in the PCI device now. */
 	hcd = dev_get_drvdata(&dev->dev);
 	xhci = hcd_to_xhci(hcd);
+	xhci->reset = reset;
 	xhci->shared_hcd = usb_create_shared_hcd(&xhci_pci_hc_driver, &dev->dev,
 						 pci_name(dev), hcd);
 	if (!xhci->shared_hcd) {
@@ -522,6 +530,8 @@ static int xhci_pci_resume(struct usb_hcd *hcd, bool hibernated)
 	struct pci_dev		*pdev = to_pci_dev(hcd->self.controller);
 	int			retval = 0;
 
+	reset_control_reset(xhci->reset);
+
 	/* The BIOS on systems with the Intel Panther Point chipset may or may
 	 * not support xHCI natively.  That means that during system resume, it
 	 * may switch the ports back to EHCI so that users can use their
diff --git a/drivers/usb/host/xhci-plat.c b/drivers/usb/host/xhci-plat.c
index 3057cfc76d6a..aa2d35f98200 100644
--- a/drivers/usb/host/xhci-plat.c
+++ b/drivers/usb/host/xhci-plat.c
@@ -54,6 +54,16 @@ static int xhci_priv_init_quirk(struct usb_hcd *hcd)
 	return priv->init_quirk(hcd);
 }
 
+static int xhci_priv_suspend_quirk(struct usb_hcd *hcd)
+{
+	struct xhci_plat_priv *priv = hcd_to_xhci_priv(hcd);
+
+	if (!priv->suspend_quirk)
+		return 0;
+
+	return priv->suspend_quirk(hcd);
+}
+
 static int xhci_priv_resume_quirk(struct usb_hcd *hcd)
 {
 	struct xhci_plat_priv *priv = hcd_to_xhci_priv(hcd);
@@ -173,6 +183,8 @@ static int xhci_plat_probe(struct platform_device *pdev)
 	struct usb_hcd		*hcd;
 	int			ret;
 	int			irq;
+	struct xhci_plat_priv	*priv = NULL;
+
 
 	if (usb_disabled())
 		return -ENODEV;
@@ -264,16 +276,18 @@ static int xhci_plat_probe(struct platform_device *pdev)
 	if (ret)
 		goto disable_reg_clk;
 
-	priv_match = of_device_get_match_data(&pdev->dev);
-	if (priv_match) {
-		struct xhci_plat_priv *priv = hcd_to_xhci_priv(hcd);
+	if (pdev->dev.of_node)
+		priv_match = of_device_get_match_data(&pdev->dev);
+	else
+		priv_match = dev_get_platdata(&pdev->dev);
 
+	if (priv_match) {
+		priv = hcd_to_xhci_priv(hcd);
 		/* Just copy data for now */
-		if (priv_match)
-			*priv = *priv_match;
+		*priv = *priv_match;
 	}
 
-	device_wakeup_enable(hcd->self.controller);
+	device_set_wakeup_capable(&pdev->dev, true);
 
 	xhci->main_hcd = hcd;
 	xhci->shared_hcd = __usb_create_hcd(driver, sysdev, &pdev->dev,
@@ -316,6 +330,9 @@ static int xhci_plat_probe(struct platform_device *pdev)
 
 	hcd->tpl_support = of_usb_host_tpl_support(sysdev->of_node);
 	xhci->shared_hcd->tpl_support = hcd->tpl_support;
+	if (priv && (priv->quirks & XHCI_SKIP_PHY_INIT))
+		hcd->skip_phy_initialization = 1;
+
 	ret = usb_add_hcd(hcd, irq, IRQF_SHARED);
 	if (ret)
 		goto disable_usb_phy;
@@ -397,14 +414,14 @@ static int __maybe_unused xhci_plat_suspend(struct device *dev)
 {
 	struct usb_hcd	*hcd = dev_get_drvdata(dev);
 	struct xhci_hcd	*xhci = hcd_to_xhci(hcd);
+	int ret;
 
+	ret = xhci_priv_suspend_quirk(hcd);
+	if (ret)
+		return ret;
 	/*
 	 * xhci_suspend() needs `do_wakeup` to know whether host is allowed
-	 * to do wakeup during suspend. Since xhci_plat_suspend is currently
-	 * only designed for system suspend, device_may_wakeup() is enough
-	 * to dertermine whether host is allowed to do wakeup. Need to
-	 * reconsider this when xhci_plat_suspend enlarges its scope, e.g.,
-	 * also applies to runtime suspend.
+	 * to do wakeup during suspend.
 	 */
 	return xhci_suspend(xhci, device_may_wakeup(dev));
 }
@@ -434,6 +451,11 @@ static int __maybe_unused xhci_plat_runtime_suspend(struct device *dev)
 {
 	struct usb_hcd  *hcd = dev_get_drvdata(dev);
 	struct xhci_hcd *xhci = hcd_to_xhci(hcd);
+	int ret;
+
+	ret = xhci_priv_suspend_quirk(hcd);
+	if (ret)
+		return ret;
 
 	return xhci_suspend(xhci, true);
 }
diff --git a/drivers/usb/host/xhci-plat.h b/drivers/usb/host/xhci-plat.h
index b49f6447bd3a..1fb149d1fbce 100644
--- a/drivers/usb/host/xhci-plat.h
+++ b/drivers/usb/host/xhci-plat.h
@@ -15,6 +15,7 @@ struct xhci_plat_priv {
 	unsigned long long quirks;
 	void (*plat_start)(struct usb_hcd *);
 	int (*init_quirk)(struct usb_hcd *);
+	int (*suspend_quirk)(struct usb_hcd *);
 	int (*resume_quirk)(struct usb_hcd *);
 };
 
diff --git a/drivers/usb/host/xhci-rcar.c b/drivers/usb/host/xhci-rcar.c
index c1025d321a41..1bc4fe7b8c75 100644
--- a/drivers/usb/host/xhci-rcar.c
+++ b/drivers/usb/host/xhci-rcar.c
@@ -6,6 +6,7 @@
  */
 
 #include <linux/firmware.h>
+#include <linux/iopoll.h>
 #include <linux/module.h>
 #include <linux/platform_device.h>
 #include <linux/of.h>
@@ -127,8 +128,7 @@ static int xhci_rcar_download_firmware(struct usb_hcd *hcd)
 	void __iomem *regs = hcd->regs;
 	struct xhci_plat_priv *priv = hcd_to_xhci_priv(hcd);
 	const struct firmware *fw;
-	int retval, index, j, time;
-	int timeout = 10000;
+	int retval, index, j;
 	u32 data, val, temp;
 	u32 quirks = 0;
 	const struct soc_device_attribute *attr;
@@ -166,32 +166,19 @@ static int xhci_rcar_download_firmware(struct usb_hcd *hcd)
 		temp |= RCAR_USB3_DL_CTRL_FW_SET_DATA0;
 		writel(temp, regs + RCAR_USB3_DL_CTRL);
 
-		for (time = 0; time < timeout; time++) {
-			val = readl(regs + RCAR_USB3_DL_CTRL);
-			if ((val & RCAR_USB3_DL_CTRL_FW_SET_DATA0) == 0)
-				break;
-			udelay(1);
-		}
-		if (time == timeout) {
-			retval = -ETIMEDOUT;
+		retval = readl_poll_timeout_atomic(regs + RCAR_USB3_DL_CTRL,
+				val, !(val & RCAR_USB3_DL_CTRL_FW_SET_DATA0),
+				1, 10000);
+		if (retval < 0)
 			break;
-		}
 	}
 
 	temp = readl(regs + RCAR_USB3_DL_CTRL);
 	temp &= ~RCAR_USB3_DL_CTRL_ENABLE;
 	writel(temp, regs + RCAR_USB3_DL_CTRL);
 
-	for (time = 0; time < timeout; time++) {
-		val = readl(regs + RCAR_USB3_DL_CTRL);
-		if (val & RCAR_USB3_DL_CTRL_FW_SUCCESS) {
-			retval = 0;
-			break;
-		}
-		udelay(1);
-	}
-	if (time == timeout)
-		retval = -ETIMEDOUT;
+	retval = readl_poll_timeout_atomic((regs + RCAR_USB3_DL_CTRL),
+			val, val & RCAR_USB3_DL_CTRL_FW_SUCCESS, 1, 10000);
 
 	release_firmware(fw);
 
@@ -200,18 +187,12 @@ static int xhci_rcar_download_firmware(struct usb_hcd *hcd)
 
 static bool xhci_rcar_wait_for_pll_active(struct usb_hcd *hcd)
 {
-	int timeout = 1000;
+	int retval;
 	u32 val, mask = RCAR_USB3_AXH_STA_PLL_ACTIVE_MASK;
 
-	while (timeout > 0) {
-		val = readl(hcd->regs + RCAR_USB3_AXH_STA);
-		if ((val & mask) == mask)
-			return true;
-		udelay(1);
-		timeout--;
-	}
-
-	return false;
+	retval = readl_poll_timeout_atomic(hcd->regs + RCAR_USB3_AXH_STA,
+			val, (val & mask) == mask, 1, 1000);
+	return !retval;
 }
 
 /* This function needs to initialize a "phy" of usb before */
diff --git a/drivers/usb/host/xhci-ring.c b/drivers/usb/host/xhci-ring.c
index a741a38a4c69..167dae117f73 100644
--- a/drivers/usb/host/xhci-ring.c
+++ b/drivers/usb/host/xhci-ring.c
@@ -3736,6 +3736,24 @@ static int xhci_get_isoc_frame_id(struct xhci_hcd *xhci,
 	return start_frame;
 }
 
+/* Check if we should generate event interrupt for a TD in an isoc URB */
+static bool trb_block_event_intr(struct xhci_hcd *xhci, int num_tds, int i)
+{
+	if (xhci->hci_version < 0x100)
+		return false;
+	/* always generate an event interrupt for the last TD */
+	if (i == num_tds - 1)
+		return false;
+	/*
+	 * If AVOID_BEI is set the host handles full event rings poorly,
+	 * generate an event at least every 8th TD to clear the event ring
+	 */
+	if (i && xhci->quirks & XHCI_AVOID_BEI)
+		return !!(i % 8);
+
+	return true;
+}
+
 /* This is for isoc transfer */
 static int xhci_queue_isoc_tx(struct xhci_hcd *xhci, gfp_t mem_flags,
 		struct urb *urb, int slot_id, unsigned int ep_index)
@@ -3843,10 +3861,7 @@ static int xhci_queue_isoc_tx(struct xhci_hcd *xhci, gfp_t mem_flags,
 				more_trbs_coming = false;
 				td->last_trb = ep_ring->enqueue;
 				field |= TRB_IOC;
-				/* set BEI, except for the last TD */
-				if (xhci->hci_version >= 0x100 &&
-				    !(xhci->quirks & XHCI_AVOID_BEI) &&
-				    i < num_tds - 1)
+				if (trb_block_event_intr(xhci, num_tds, i))
 					field |= TRB_BEI;
 			}
 			/* Calculate TRB length */
diff --git a/drivers/usb/host/xhci-tegra.c b/drivers/usb/host/xhci-tegra.c
index 190923d8b246..934be1686352 100644
--- a/drivers/usb/host/xhci-tegra.c
+++ b/drivers/usb/host/xhci-tegra.c
@@ -1866,7 +1866,6 @@ static const struct tegra_xusb_phy_type tegra124_phy_types[] = {
 
 static const unsigned int tegra124_xusb_context_ipfs[] = {
 	IPFS_XUSB_HOST_MSI_BAR_SZ_0,
-	IPFS_XUSB_HOST_MSI_BAR_SZ_0,
 	IPFS_XUSB_HOST_MSI_AXI_BAR_ST_0,
 	IPFS_XUSB_HOST_MSI_FPCI_BAR_ST_0,
 	IPFS_XUSB_HOST_MSI_VEC0_0,
diff --git a/drivers/usb/host/xhci.c b/drivers/usb/host/xhci.c
index f4cedcaee14b..482fe8c5e3b4 100644
--- a/drivers/usb/host/xhci.c
+++ b/drivers/usb/host/xhci.c
@@ -982,12 +982,15 @@ int xhci_suspend(struct xhci_hcd *xhci, bool do_wakeup)
 			xhci->shared_hcd->state != HC_STATE_SUSPENDED)
 		return -EINVAL;
 
-	xhci_dbc_suspend(xhci);
-
 	/* Clear root port wake on bits if wakeup not allowed. */
 	if (!do_wakeup)
 		xhci_disable_port_wake_on_bits(xhci);
 
+	if (!HCD_HW_ACCESSIBLE(hcd))
+		return 0;
+
+	xhci_dbc_suspend(xhci);
+
 	/* Don't poll the roothubs on bus suspend. */
 	xhci_dbg(xhci, "%s: stopping port polling.\n", __func__);
 	clear_bit(HCD_FLAG_POLL_RH, &hcd->flags);
@@ -1915,8 +1918,6 @@ static int xhci_add_endpoint(struct usb_hcd *hcd, struct usb_device *udev,
 	ep_ctx = xhci_get_ep_ctx(xhci, virt_dev->in_ctx, ep_index);
 	trace_xhci_add_endpoint(ep_ctx);
 
-	xhci_debugfs_create_endpoint(xhci, virt_dev, ep_index);
-
 	xhci_dbg(xhci, "add ep 0x%x, slot id %d, new drop flags = %#x, new add flags = %#x\n",
 			(unsigned int) ep->desc.bEndpointAddress,
 			udev->slot_id,
@@ -2949,6 +2950,7 @@ static int xhci_check_bandwidth(struct usb_hcd *hcd, struct usb_device *udev)
 		xhci_check_bw_drop_ep_streams(xhci, virt_dev, i);
 		virt_dev->eps[i].ring = virt_dev->eps[i].new_ring;
 		virt_dev->eps[i].new_ring = NULL;
+		xhci_debugfs_create_endpoint(xhci, virt_dev, i);
 	}
 command_cleanup:
 	kfree(command->completion);
@@ -3531,6 +3533,7 @@ static int xhci_alloc_streams(struct usb_hcd *hcd, struct usb_device *udev,
 		xhci_dbg(xhci, "Slot %u ep ctx %u now has streams.\n",
 			 udev->slot_id, ep_index);
 		vdev->eps[ep_index].ep_state |= EP_HAS_STREAMS;
+		xhci_debugfs_create_stream_files(xhci, vdev, ep_index);
 	}
 	xhci_free_command(xhci, config_cmd);
 	spin_unlock_irqrestore(&xhci->lock, flags);
diff --git a/drivers/usb/host/xhci.h b/drivers/usb/host/xhci.h
index ea1754f185a2..8be88379c0fb 100644
--- a/drivers/usb/host/xhci.h
+++ b/drivers/usb/host/xhci.h
@@ -1770,6 +1770,8 @@ struct xhci_hcd {
 	/* optional clocks */
 	struct clk		*clk;
 	struct clk		*reg_clk;
+	/* optional reset controller */
+	struct reset_control *reset;
 	/* data structures */
 	struct xhci_device_context_array *dcbaa;
 	struct xhci_ring	*cmd_ring;
@@ -1874,6 +1876,7 @@ struct xhci_hcd {
 #define XHCI_RESET_PLL_ON_DISCONNECT	BIT_ULL(34)
 #define XHCI_SNPS_BROKEN_SUSPEND    BIT_ULL(35)
 #define XHCI_RENESAS_FW_QUIRK	BIT_ULL(36)
+#define XHCI_SKIP_PHY_INIT	BIT_ULL(37)
 
 	unsigned int		num_active_eps;
 	unsigned int		limit_active_eps;