diff --git a/Documentation/ABI/testing/configfs-usb-gadget-rndis b/Documentation/ABI/testing/configfs-usb-gadget-rndis
index e32879b84b4d..137399095d74 100644
--- a/Documentation/ABI/testing/configfs-usb-gadget-rndis
+++ b/Documentation/ABI/testing/configfs-usb-gadget-rndis
@@ -12,3 +12,6 @@ Description:
 				Ethernet over USB link
 		dev_addr	- MAC address of device's end of this
 				Ethernet over USB link
+		class		- USB interface class, default is 02 (hex)
+		subclass	- USB interface subclass, default is 06 (hex)
+		protocol	- USB interface protocol, default is 00 (hex)
diff --git a/Documentation/devicetree/bindings/mfd/wm831x.txt b/Documentation/devicetree/bindings/mfd/wm831x.txt
index 9f8b7430673c..505709403d3f 100644
--- a/Documentation/devicetree/bindings/mfd/wm831x.txt
+++ b/Documentation/devicetree/bindings/mfd/wm831x.txt
@@ -31,6 +31,7 @@ Required properties:
     ../interrupt-controller/interrupts.txt
 
 Optional sub-nodes:
+  - phys : Contains a phandle to the USB PHY.
   - regulators : Contains sub-nodes for each of the regulators supplied by
     the device. The regulators are bound using their names listed below:
 
diff --git a/Documentation/devicetree/bindings/usb/brcm,bdc.txt b/Documentation/devicetree/bindings/usb/brcm,bdc.txt
new file mode 100644
index 000000000000..63e63af3bf59
--- /dev/null
+++ b/Documentation/devicetree/bindings/usb/brcm,bdc.txt
@@ -0,0 +1,29 @@
+Broadcom USB Device Controller (BDC)
+====================================
+
+Required properties:
+
+- compatible: must be one of:
+                "brcm,bdc-v0.16"
+                "brcm,bdc"
+- reg: the base register address and length
+- interrupts: the interrupt line for this controller
+
+Optional properties:
+
+On Broadcom STB platforms, these properties are required:
+
+- phys: phandle to one or two USB PHY blocks
+        NOTE: Some SoC's have a single phy and some have
+        USB 2.0 and USB 3.0 phys
+- clocks: phandle to the functional clock of this block
+
+Example:
+
+        bdc@f0b02000 {
+                compatible = "brcm,bdc-v0.16";
+                reg = <0xf0b02000 0xfc4>;
+                interrupts = <0x0 0x60 0x0>;
+                phys = <&usbphy_0 0x0>;
+                clocks = <&sw_usbd>;
+        };
diff --git a/Documentation/devicetree/bindings/usb/keystone-usb.txt b/Documentation/devicetree/bindings/usb/keystone-usb.txt
index 60527d335b58..2d1bef16f149 100644
--- a/Documentation/devicetree/bindings/usb/keystone-usb.txt
+++ b/Documentation/devicetree/bindings/usb/keystone-usb.txt
@@ -12,8 +12,21 @@ Required properties:
    MPU.
  - ranges: allows valid 1:1 translation between child's address space and
    parent's address space.
- - clocks: Clock IDs array as required by the controller.
- - clock-names: names of clocks correseponding to IDs in the clock property.
+
+SoC-specific Required Properties:
+The following are mandatory properties for Keystone 2 66AK2HK, 66AK2L and 66AK2E
+SoCs only:
+
+- clocks:		Clock ID for USB functional clock.
+- clock-names:		Must be "usb".
+
+
+The following are mandatory properties for Keystone 2 66AK2G SoCs only:
+
+- power-domains:	Should contain a phandle to a PM domain provider node
+			and an args specifier containing the USB device id
+			value. This property is as per the binding,
+			Documentation/devicetree/bindings/soc/ti/sci-pm-domain.txt
 
 Sub-nodes:
 The dwc3 core should be added as subnode to Keystone DWC3 glue.
diff --git a/Documentation/devicetree/bindings/usb/renesas_usb3.txt b/Documentation/devicetree/bindings/usb/renesas_usb3.txt
index 8d52766f07b9..e28025883b79 100644
--- a/Documentation/devicetree/bindings/usb/renesas_usb3.txt
+++ b/Documentation/devicetree/bindings/usb/renesas_usb3.txt
@@ -3,20 +3,30 @@ Renesas Electronics USB3.0 Peripheral driver
 Required properties:
   - compatible: Must contain one of the following:
 	- "renesas,r8a7795-usb3-peri"
+	- "renesas,r8a7796-usb3-peri"
+	- "renesas,rcar-gen3-usb3-peri" for a generic R-Car Gen3 compatible
+	  device
+
+    When compatible with the generic version, nodes must list the
+    SoC-specific version corresponding to the platform first
+    followed by the generic version.
+
   - reg: Base address and length of the register for the USB3.0 Peripheral
   - interrupts: Interrupt specifier for the USB3.0 Peripheral
   - clocks: clock phandle and specifier pair
 
-Example:
+Example of R-Car H3 ES1.x:
 	usb3_peri0: usb@ee020000 {
-		compatible = "renesas,r8a7795-usb3-peri";
+		compatible = "renesas,r8a7795-usb3-peri",
+			     "renesas,rcar-gen3-usb3-peri";
 		reg = <0 0xee020000 0 0x400>;
 		interrupts = <GIC_SPI 104 IRQ_TYPE_LEVEL_HIGH>;
 		clocks = <&cpg CPG_MOD 328>;
 	};
 
 	usb3_peri1: usb@ee060000 {
-		compatible = "renesas,r8a7795-usb3-peri";
+		compatible = "renesas,r8a7795-usb3-peri",
+			     "renesas,rcar-gen3-usb3-peri";
 		reg = <0 0xee060000 0 0x400>;
 		interrupts = <GIC_SPI 100 IRQ_TYPE_LEVEL_HIGH>;
 		clocks = <&cpg CPG_MOD 327>;
diff --git a/drivers/power/supply/wm831x_power.c b/drivers/power/supply/wm831x_power.c
index 7082301da945..927050d4444d 100644
--- a/drivers/power/supply/wm831x_power.c
+++ b/drivers/power/supply/wm831x_power.c
@@ -13,6 +13,7 @@
 #include <linux/platform_device.h>
 #include <linux/power_supply.h>
 #include <linux/slab.h>
+#include <linux/usb/phy.h>
 
 #include <linux/mfd/wm831x/core.h>
 #include <linux/mfd/wm831x/auxadc.h>
@@ -31,6 +32,8 @@ struct wm831x_power {
 	char usb_name[20];
 	char battery_name[20];
 	bool have_battery;
+	struct usb_phy *usb_phy;
+	struct notifier_block usb_notify;
 };
 
 static int wm831x_power_check_online(struct wm831x *wm831x, int supply,
@@ -125,6 +128,43 @@ static enum power_supply_property wm831x_usb_props[] = {
 	POWER_SUPPLY_PROP_VOLTAGE_NOW,
 };
 
+/* In milliamps */
+static const unsigned int wm831x_usb_limits[] = {
+	0,
+	2,
+	100,
+	500,
+	900,
+	1500,
+	1800,
+	550,
+};
+
+static int wm831x_usb_limit_change(struct notifier_block *nb,
+				   unsigned long limit, void *data)
+{
+	struct wm831x_power *wm831x_power = container_of(nb,
+							 struct wm831x_power,
+							 usb_notify);
+	unsigned int i, best;
+
+	/* Find the highest supported limit */
+	best = 0;
+	for (i = 0; i < ARRAY_SIZE(wm831x_usb_limits); i++) {
+		if (limit >= wm831x_usb_limits[i] &&
+		    wm831x_usb_limits[best] < wm831x_usb_limits[i])
+			best = i;
+	}
+
+	dev_dbg(wm831x_power->wm831x->dev,
+		"Limiting USB current to %umA", wm831x_usb_limits[best]);
+
+	wm831x_set_bits(wm831x_power->wm831x, WM831X_POWER_STATE,
+		        WM831X_USB_ILIM_MASK, best);
+
+	return 0;
+}
+
 /*********************************************************************
  *		Battery properties
  *********************************************************************/
@@ -607,6 +647,33 @@ static int wm831x_power_probe(struct platform_device *pdev)
 		}
 	}
 
+	power->usb_phy = devm_usb_get_phy_by_phandle(&pdev->dev, "phys", 0);
+	ret = PTR_ERR_OR_ZERO(power->usb_phy);
+
+	switch (ret) {
+	case 0:
+		power->usb_notify.notifier_call = wm831x_usb_limit_change;
+		ret = usb_register_notifier(power->usb_phy, &power->usb_notify);
+		if (ret) {
+			dev_err(&pdev->dev, "Failed to register notifier: %d\n",
+				ret);
+			goto err_bat_irq;
+		}
+		break;
+	case -EINVAL:
+	case -ENODEV:
+		/* ignore missing usb-phy, it's optional */
+		power->usb_phy = NULL;
+		ret = 0;
+		break;
+	default:
+		dev_err(&pdev->dev, "Failed to find USB phy: %d\n", ret);
+		/* fall-through */
+	case -EPROBE_DEFER:
+		goto err_bat_irq;
+		break;
+	}
+
 	return ret;
 
 err_bat_irq:
@@ -637,6 +704,11 @@ static int wm831x_power_remove(struct platform_device *pdev)
 	struct wm831x *wm831x = wm831x_power->wm831x;
 	int irq, i;
 
+	if (wm831x_power->usb_phy) {
+		usb_unregister_notifier(wm831x_power->usb_phy,
+					&wm831x_power->usb_notify);
+	}
+
 	for (i = 0; i < ARRAY_SIZE(wm831x_bat_irqs); i++) {
 		irq = wm831x_irq(wm831x, 
 				 platform_get_irq_byname(pdev,
diff --git a/drivers/usb/dwc2/gadget.c b/drivers/usb/dwc2/gadget.c
index c4066cd77e47..0d8e09ccb59c 100644
--- a/drivers/usb/dwc2/gadget.c
+++ b/drivers/usb/dwc2/gadget.c
@@ -4179,7 +4179,7 @@ static int dwc2_hsotg_ep_sethalt_lock(struct usb_ep *ep, int value)
 	return ret;
 }
 
-static struct usb_ep_ops dwc2_hsotg_ep_ops = {
+static const struct usb_ep_ops dwc2_hsotg_ep_ops = {
 	.enable		= dwc2_hsotg_ep_enable,
 	.disable	= dwc2_hsotg_ep_disable,
 	.alloc_request	= dwc2_hsotg_ep_alloc_request,
diff --git a/drivers/usb/dwc2/hcd.c b/drivers/usb/dwc2/hcd.c
index 740c7e86d31b..c2631145f404 100644
--- a/drivers/usb/dwc2/hcd.c
+++ b/drivers/usb/dwc2/hcd.c
@@ -4388,6 +4388,9 @@ static int _dwc2_hcd_suspend(struct usb_hcd *hcd)
 
 	spin_lock_irqsave(&hsotg->lock, flags);
 
+	if (dwc2_is_device_mode(hsotg))
+		goto unlock;
+
 	if (hsotg->lx_state != DWC2_L0)
 		goto unlock;
 
@@ -4446,6 +4449,9 @@ static int _dwc2_hcd_resume(struct usb_hcd *hcd)
 
 	spin_lock_irqsave(&hsotg->lock, flags);
 
+	if (dwc2_is_device_mode(hsotg))
+		goto unlock;
+
 	if (hsotg->lx_state != DWC2_L2)
 		goto unlock;
 
diff --git a/drivers/usb/dwc3/dwc3-keystone.c b/drivers/usb/dwc3/dwc3-keystone.c
index 12ee23f53cdd..d2ed9523e77c 100644
--- a/drivers/usb/dwc3/dwc3-keystone.c
+++ b/drivers/usb/dwc3/dwc3-keystone.c
@@ -15,7 +15,6 @@
  * GNU General Public License for more details.
  */
 
-#include <linux/clk.h>
 #include <linux/module.h>
 #include <linux/kernel.h>
 #include <linux/interrupt.h>
@@ -23,6 +22,7 @@
 #include <linux/dma-mapping.h>
 #include <linux/io.h>
 #include <linux/of_platform.h>
+#include <linux/pm_runtime.h>
 
 /* USBSS register offsets */
 #define USBSS_REVISION		0x0000
@@ -41,7 +41,6 @@
 
 struct dwc3_keystone {
 	struct device			*dev;
-	struct clk			*clk;
 	void __iomem			*usbss;
 };
 
@@ -106,17 +105,13 @@ static int kdwc3_probe(struct platform_device *pdev)
 	if (IS_ERR(kdwc->usbss))
 		return PTR_ERR(kdwc->usbss);
 
-	kdwc->clk = devm_clk_get(kdwc->dev, "usb");
-	if (IS_ERR(kdwc->clk)) {
-		dev_err(kdwc->dev, "unable to get usb clock\n");
-		return PTR_ERR(kdwc->clk);
-	}
+	pm_runtime_enable(kdwc->dev);
 
-	error = clk_prepare_enable(kdwc->clk);
+	error = pm_runtime_get_sync(kdwc->dev);
 	if (error < 0) {
-		dev_err(kdwc->dev, "unable to enable usb clock, error %d\n",
+		dev_err(kdwc->dev, "pm_runtime_get_sync failed, error %d\n",
 			error);
-		return error;
+		goto err_irq;
 	}
 
 	irq = platform_get_irq(pdev, 0);
@@ -147,7 +142,8 @@ static int kdwc3_probe(struct platform_device *pdev)
 err_core:
 	kdwc3_disable_irqs(kdwc);
 err_irq:
-	clk_disable_unprepare(kdwc->clk);
+	pm_runtime_put_sync(kdwc->dev);
+	pm_runtime_disable(kdwc->dev);
 
 	return error;
 }
@@ -167,7 +163,9 @@ static int kdwc3_remove(struct platform_device *pdev)
 
 	kdwc3_disable_irqs(kdwc);
 	device_for_each_child(&pdev->dev, NULL, kdwc3_remove_core);
-	clk_disable_unprepare(kdwc->clk);
+	pm_runtime_put_sync(kdwc->dev);
+	pm_runtime_disable(kdwc->dev);
+
 	platform_set_drvdata(pdev, NULL);
 
 	return 0;
diff --git a/drivers/usb/dwc3/dwc3-of-simple.c b/drivers/usb/dwc3/dwc3-of-simple.c
index fe414e7a9c78..4cef7d4f9cd0 100644
--- a/drivers/usb/dwc3/dwc3-of-simple.c
+++ b/drivers/usb/dwc3/dwc3-of-simple.c
@@ -25,7 +25,6 @@
 #include <linux/platform_device.h>
 #include <linux/dma-mapping.h>
 #include <linux/clk.h>
-#include <linux/clk-provider.h>
 #include <linux/of.h>
 #include <linux/of_platform.h>
 #include <linux/pm_runtime.h>
@@ -96,7 +95,8 @@ static int dwc3_of_simple_probe(struct platform_device *pdev)
 	platform_set_drvdata(pdev, simple);
 	simple->dev = dev;
 
-	ret = dwc3_of_simple_clk_init(simple, of_clk_get_parent_count(np));
+	ret = dwc3_of_simple_clk_init(simple, of_count_phandle_with_args(np,
+						"clocks", "#clock-cells"));
 	if (ret)
 		return ret;
 
diff --git a/drivers/usb/dwc3/dwc3-omap.c b/drivers/usb/dwc3/dwc3-omap.c
index f5aaa0cf3873..3530795bbb8f 100644
--- a/drivers/usb/dwc3/dwc3-omap.c
+++ b/drivers/usb/dwc3/dwc3-omap.c
@@ -478,8 +478,8 @@ static int dwc3_omap_probe(struct platform_device *pdev)
 
 	irq = platform_get_irq(pdev, 0);
 	if (irq < 0) {
-		dev_err(dev, "missing IRQ resource\n");
-		return -EINVAL;
+		dev_err(dev, "missing IRQ resource: %d\n", irq);
+		return irq;
 	}
 
 	res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
diff --git a/drivers/usb/gadget/Kconfig b/drivers/usb/gadget/Kconfig
index 35cc641d9f31..31cce7805eb2 100644
--- a/drivers/usb/gadget/Kconfig
+++ b/drivers/usb/gadget/Kconfig
@@ -130,7 +130,7 @@ config USB_GADGET_STORAGE_NUM_BUFFERS
 
 config U_SERIAL_CONSOLE
 	bool "Serial gadget console support"
-	depends on USB_G_SERIAL
+	depends on USB_U_SERIAL
 	help
 	   It supports the serial gadget can be used as a console.
 
diff --git a/drivers/usb/gadget/function/f_fs.c b/drivers/usb/gadget/function/f_fs.c
index d21874b35cf6..9990944a7245 100644
--- a/drivers/usb/gadget/function/f_fs.c
+++ b/drivers/usb/gadget/function/f_fs.c
@@ -961,10 +961,9 @@ static ssize_t ffs_epfile_io(struct file *file, struct ffs_io_data *io_data)
 		/* In the meantime, endpoint got disabled or changed. */
 		ret = -ESHUTDOWN;
 	} else if (halt) {
-		/* Halt */
-		if (likely(epfile->ep == ep) && !WARN_ON(!ep->ep))
-			usb_ep_set_halt(ep->ep);
-		ret = -EBADMSG;
+		ret = usb_ep_set_halt(ep->ep);
+		if (!ret)
+			ret = -EBADMSG;
 	} else if (unlikely(data_len == -EINVAL)) {
 		/*
 		 * Sanity Check: even though data_len can't be used
diff --git a/drivers/usb/gadget/function/f_hid.c b/drivers/usb/gadget/function/f_hid.c
index 5eea44823ca0..d8e359ef6eb1 100644
--- a/drivers/usb/gadget/function/f_hid.c
+++ b/drivers/usb/gadget/function/f_hid.c
@@ -44,6 +44,7 @@ struct f_hidg {
 	/* configuration */
 	unsigned char			bInterfaceSubClass;
 	unsigned char			bInterfaceProtocol;
+	unsigned char			protocol;
 	unsigned short			report_desc_length;
 	char				*report_desc;
 	unsigned short			report_length;
@@ -527,7 +528,9 @@ static int hidg_setup(struct usb_function *f,
 	case ((USB_DIR_IN | USB_TYPE_CLASS | USB_RECIP_INTERFACE) << 8
 		  | HID_REQ_GET_PROTOCOL):
 		VDBG(cdev, "get_protocol\n");
-		goto stall;
+		length = min_t(unsigned int, length, 1);
+		((u8 *) req->buf)[0] = hidg->protocol;
+		goto respond;
 		break;
 
 	case ((USB_DIR_OUT | USB_TYPE_CLASS | USB_RECIP_INTERFACE) << 8
@@ -539,6 +542,17 @@ static int hidg_setup(struct usb_function *f,
 	case ((USB_DIR_OUT | USB_TYPE_CLASS | USB_RECIP_INTERFACE) << 8
 		  | HID_REQ_SET_PROTOCOL):
 		VDBG(cdev, "set_protocol\n");
+		if (value > HID_REPORT_PROTOCOL)
+			goto stall;
+		length = 0;
+		/*
+		 * We assume that programs implementing the Boot protocol
+		 * are also compatible with the Report Protocol
+		 */
+		if (hidg->bInterfaceSubClass == USB_INTERFACE_SUBCLASS_BOOT) {
+			hidg->protocol = value;
+			goto respond;
+		}
 		goto stall;
 		break;
 
@@ -768,6 +782,7 @@ static int hidg_bind(struct usb_configuration *c, struct usb_function *f)
 	/* set descriptor dynamic values */
 	hidg_interface_desc.bInterfaceSubClass = hidg->bInterfaceSubClass;
 	hidg_interface_desc.bInterfaceProtocol = hidg->bInterfaceProtocol;
+	hidg->protocol = HID_REPORT_PROTOCOL;
 	hidg_ss_in_ep_desc.wMaxPacketSize = cpu_to_le16(hidg->report_length);
 	hidg_ss_in_comp_desc.wBytesPerInterval =
 				cpu_to_le16(hidg->report_length);
diff --git a/drivers/usb/gadget/function/f_midi.c b/drivers/usb/gadget/function/f_midi.c
index a5719f271bf0..5d3d7941d2c2 100644
--- a/drivers/usb/gadget/function/f_midi.c
+++ b/drivers/usb/gadget/function/f_midi.c
@@ -98,6 +98,7 @@ struct f_midi {
 	DECLARE_KFIFO_PTR(in_req_fifo, struct usb_request *);
 	spinlock_t transmit_lock;
 	unsigned int in_last_port;
+	unsigned char free_ref;
 
 	struct gmidi_in_port	in_ports_array[/* in_ports */];
 };
@@ -108,6 +109,7 @@ static inline struct f_midi *func_to_midi(struct usb_function *f)
 }
 
 static void f_midi_transmit(struct f_midi *midi);
+static void f_midi_rmidi_free(struct snd_rawmidi *rmidi);
 
 DECLARE_UAC_AC_HEADER_DESCRIPTOR(1);
 DECLARE_USB_MIDI_OUT_JACK_DESCRIPTOR(1);
@@ -163,6 +165,13 @@ static struct usb_endpoint_descriptor bulk_out_desc = {
 	.bmAttributes =		USB_ENDPOINT_XFER_BULK,
 };
 
+static struct usb_ss_ep_comp_descriptor bulk_out_ss_comp_desc = {
+	.bLength                = sizeof(bulk_out_ss_comp_desc),
+	.bDescriptorType        = USB_DT_SS_ENDPOINT_COMP,
+	/* .bMaxBurst           = 0, */
+	/* .bmAttributes        = 0, */
+};
+
 /* B.5.2  Class-specific MS Bulk OUT Endpoint Descriptor */
 static struct usb_ms_endpoint_descriptor_16 ms_out_desc = {
 	/* .bLength =		DYNAMIC */
@@ -180,6 +189,13 @@ static struct usb_endpoint_descriptor bulk_in_desc = {
 	.bmAttributes =		USB_ENDPOINT_XFER_BULK,
 };
 
+static struct usb_ss_ep_comp_descriptor bulk_in_ss_comp_desc = {
+	.bLength                = sizeof(bulk_in_ss_comp_desc),
+	.bDescriptorType        = USB_DT_SS_ENDPOINT_COMP,
+	/* .bMaxBurst           = 0, */
+	/* .bmAttributes        = 0, */
+};
+
 /* B.6.2  Class-specific MS Bulk IN Endpoint Descriptor */
 static struct usb_ms_endpoint_descriptor_16 ms_in_desc = {
 	/* .bLength =		DYNAMIC */
@@ -755,13 +771,13 @@ static void f_midi_out_trigger(struct snd_rawmidi_substream *substream, int up)
 		clear_bit(substream->number, &midi->out_triggered);
 }
 
-static struct snd_rawmidi_ops gmidi_in_ops = {
+static const struct snd_rawmidi_ops gmidi_in_ops = {
 	.open = f_midi_in_open,
 	.close = f_midi_in_close,
 	.trigger = f_midi_in_trigger,
 };
 
-static struct snd_rawmidi_ops gmidi_out_ops = {
+static const struct snd_rawmidi_ops gmidi_out_ops = {
 	.open = f_midi_out_open,
 	.close = f_midi_out_close,
 	.trigger = f_midi_out_trigger
@@ -818,6 +834,8 @@ static int f_midi_register_card(struct f_midi *midi)
 			    SNDRV_RAWMIDI_INFO_INPUT |
 			    SNDRV_RAWMIDI_INFO_DUPLEX;
 	rmidi->private_data = midi;
+	rmidi->private_free = f_midi_rmidi_free;
+	midi->free_ref++;
 
 	/*
 	 * Yes, rawmidi OUTPUT = USB IN, and rawmidi INPUT = USB OUT.
@@ -853,7 +871,7 @@ static int f_midi_bind(struct usb_configuration *c, struct usb_function *f)
 	struct usb_composite_dev *cdev = c->cdev;
 	struct f_midi *midi = func_to_midi(f);
 	struct usb_string *us;
-	int status, n, jack = 1, i = 0;
+	int status, n, jack = 1, i = 0, endpoint_descriptor_index = 0;
 
 	midi->gadget = cdev->gadget;
 	tasklet_init(&midi->tasklet, f_midi_in_tasklet, (unsigned long) midi);
@@ -895,7 +913,7 @@ static int f_midi_bind(struct usb_configuration *c, struct usb_function *f)
 		goto fail;
 
 	/* allocate temporary function list */
-	midi_function = kcalloc((MAX_PORTS * 4) + 9, sizeof(*midi_function),
+	midi_function = kcalloc((MAX_PORTS * 4) + 11, sizeof(*midi_function),
 				GFP_KERNEL);
 	if (!midi_function) {
 		status = -ENOMEM;
@@ -985,6 +1003,7 @@ static int f_midi_bind(struct usb_configuration *c, struct usb_function *f)
 	ms_in_desc.bNumEmbMIDIJack = midi->out_ports;
 
 	/* ... and add them to the list */
+	endpoint_descriptor_index = i;
 	midi_function[i++] = (struct usb_descriptor_header *) &bulk_out_desc;
 	midi_function[i++] = (struct usb_descriptor_header *) &ms_out_desc;
 	midi_function[i++] = (struct usb_descriptor_header *) &bulk_in_desc;
@@ -1009,13 +1028,34 @@ static int f_midi_bind(struct usb_configuration *c, struct usb_function *f)
 			goto fail_f_midi;
 	}
 
+	if (gadget_is_superspeed(c->cdev->gadget)) {
+		bulk_in_desc.wMaxPacketSize = cpu_to_le16(1024);
+		bulk_out_desc.wMaxPacketSize = cpu_to_le16(1024);
+		i = endpoint_descriptor_index;
+		midi_function[i++] = (struct usb_descriptor_header *)
+				     &bulk_out_desc;
+		midi_function[i++] = (struct usb_descriptor_header *)
+				     &bulk_out_ss_comp_desc;
+		midi_function[i++] = (struct usb_descriptor_header *)
+				     &ms_out_desc;
+		midi_function[i++] = (struct usb_descriptor_header *)
+				     &bulk_in_desc;
+		midi_function[i++] = (struct usb_descriptor_header *)
+				     &bulk_in_ss_comp_desc;
+		midi_function[i++] = (struct usb_descriptor_header *)
+				     &ms_in_desc;
+		f->ss_descriptors = usb_copy_descriptors(midi_function);
+		if (!f->ss_descriptors)
+			goto fail_f_midi;
+	}
+
 	kfree(midi_function);
 
 	return 0;
 
 fail_f_midi:
 	kfree(midi_function);
-	usb_free_descriptors(f->hs_descriptors);
+	usb_free_all_descriptors(f);
 fail:
 	f_midi_unregister_card(midi);
 fail_register:
@@ -1197,14 +1237,21 @@ static void f_midi_free(struct usb_function *f)
 
 	midi = func_to_midi(f);
 	opts = container_of(f->fi, struct f_midi_opts, func_inst);
-	kfree(midi->id);
 	mutex_lock(&opts->lock);
-	kfifo_free(&midi->in_req_fifo);
-	kfree(midi);
-	--opts->refcnt;
+	if (!--midi->free_ref) {
+		kfree(midi->id);
+		kfifo_free(&midi->in_req_fifo);
+		kfree(midi);
+		--opts->refcnt;
+	}
 	mutex_unlock(&opts->lock);
 }
 
+static void f_midi_rmidi_free(struct snd_rawmidi *rmidi)
+{
+	f_midi_free(rmidi->private_data);
+}
+
 static void f_midi_unbind(struct usb_configuration *c, struct usb_function *f)
 {
 	struct usb_composite_dev *cdev = f->config->cdev;
@@ -1219,7 +1266,7 @@ static void f_midi_unbind(struct usb_configuration *c, struct usb_function *f)
 	card = midi->card;
 	midi->card = NULL;
 	if (card)
-		snd_card_free(card);
+		snd_card_free_when_closed(card);
 
 	usb_free_all_descriptors(f);
 }
@@ -1263,6 +1310,7 @@ static struct usb_function *f_midi_alloc(struct usb_function_instance *fi)
 	midi->buflen = opts->buflen;
 	midi->qlen = opts->qlen;
 	midi->in_last_port = 0;
+	midi->free_ref = 1;
 
 	status = kfifo_alloc(&midi->in_req_fifo, midi->qlen, GFP_KERNEL);
 	if (status)
diff --git a/drivers/usb/gadget/function/f_ncm.c b/drivers/usb/gadget/function/f_ncm.c
index 24e34cfcb4bd..45b334ceaf2e 100644
--- a/drivers/usb/gadget/function/f_ncm.c
+++ b/drivers/usb/gadget/function/f_ncm.c
@@ -925,8 +925,6 @@ static int ncm_set_alt(struct usb_function *f, unsigned intf, unsigned alt)
 			 */
 			ncm->port.is_zlp_ok =
 				gadget_is_zlp_supported(cdev->gadget);
-			ncm->port.no_skb_reserve =
-				gadget_avoids_skb_reserve(cdev->gadget);
 			ncm->port.cdc_filter = DEFAULT_FILTER;
 			DBG(cdev, "activate ncm\n");
 			net = gether_connect(&ncm->port);
diff --git a/drivers/usb/gadget/function/f_rndis.c b/drivers/usb/gadget/function/f_rndis.c
index 16562e461121..e1d5853ef1e4 100644
--- a/drivers/usb/gadget/function/f_rndis.c
+++ b/drivers/usb/gadget/function/f_rndis.c
@@ -691,6 +691,10 @@ rndis_bind(struct usb_configuration *c, struct usb_function *f)
 		f->os_desc_table[0].os_desc = &rndis_opts->rndis_os_desc;
 	}
 
+	rndis_iad_descriptor.bFunctionClass = rndis_opts->class;
+	rndis_iad_descriptor.bFunctionSubClass = rndis_opts->subclass;
+	rndis_iad_descriptor.bFunctionProtocol = rndis_opts->protocol;
+
 	/*
 	 * in drivers/usb/gadget/configfs.c:configfs_composite_bind()
 	 * configurations are bound in sequence with list_for_each_entry,
@@ -866,11 +870,23 @@ USB_ETHERNET_CONFIGFS_ITEM_ATTR_QMULT(rndis);
 /* f_rndis_opts_ifname */
 USB_ETHERNET_CONFIGFS_ITEM_ATTR_IFNAME(rndis);
 
+/* f_rndis_opts_class */
+USB_ETHER_CONFIGFS_ITEM_ATTR_U8_RW(rndis, class);
+
+/* f_rndis_opts_subclass */
+USB_ETHER_CONFIGFS_ITEM_ATTR_U8_RW(rndis, subclass);
+
+/* f_rndis_opts_protocol */
+USB_ETHER_CONFIGFS_ITEM_ATTR_U8_RW(rndis, protocol);
+
 static struct configfs_attribute *rndis_attrs[] = {
 	&rndis_opts_attr_dev_addr,
 	&rndis_opts_attr_host_addr,
 	&rndis_opts_attr_qmult,
 	&rndis_opts_attr_ifname,
+	&rndis_opts_attr_class,
+	&rndis_opts_attr_subclass,
+	&rndis_opts_attr_protocol,
 	NULL,
 };
 
@@ -916,6 +932,10 @@ static struct usb_function_instance *rndis_alloc_inst(void)
 	}
 	INIT_LIST_HEAD(&opts->rndis_os_desc.ext_prop);
 
+	opts->class = rndis_iad_descriptor.bFunctionClass;
+	opts->subclass = rndis_iad_descriptor.bFunctionSubClass;
+	opts->protocol = rndis_iad_descriptor.bFunctionProtocol;
+
 	descs[0] = &opts->rndis_os_desc;
 	names[0] = "rndis";
 	config_group_init_type_name(&opts->func_inst.group, "",
diff --git a/drivers/usb/gadget/function/u_ether.c b/drivers/usb/gadget/function/u_ether.c
index a8b40d07e927..bdbc3fdc7c4f 100644
--- a/drivers/usb/gadget/function/u_ether.c
+++ b/drivers/usb/gadget/function/u_ether.c
@@ -1073,7 +1073,7 @@ struct net_device *gether_connect(struct gether *link)
 
 	if (result == 0) {
 		dev->zlp = link->is_zlp_ok;
-		dev->no_skb_reserve = link->no_skb_reserve;
+		dev->no_skb_reserve = gadget_avoids_skb_reserve(dev->gadget);
 		DBG(dev, "qlen %d\n", qlen(dev->gadget, dev->qmult));
 
 		dev->header_len = link->header_len;
diff --git a/drivers/usb/gadget/function/u_ether.h b/drivers/usb/gadget/function/u_ether.h
index 81d94a7ae4b4..c77145bd6b5b 100644
--- a/drivers/usb/gadget/function/u_ether.h
+++ b/drivers/usb/gadget/function/u_ether.h
@@ -64,7 +64,6 @@ struct gether {
 	struct usb_ep			*out_ep;
 
 	bool				is_zlp_ok;
-	bool				no_skb_reserve;
 
 	u16				cdc_filter;
 
diff --git a/drivers/usb/gadget/function/u_ether_configfs.h b/drivers/usb/gadget/function/u_ether_configfs.h
index c71133de17e7..e4c3f84af4c3 100644
--- a/drivers/usb/gadget/function/u_ether_configfs.h
+++ b/drivers/usb/gadget/function/u_ether_configfs.h
@@ -153,4 +153,39 @@ out:									\
 									\
 	CONFIGFS_ATTR_RO(_f_##_opts_, ifname)
 
+#define USB_ETHER_CONFIGFS_ITEM_ATTR_U8_RW(_f_, _n_)			\
+	static ssize_t _f_##_opts_##_n_##_show(struct config_item *item,\
+					       char *page)		\
+	{								\
+		struct f_##_f_##_opts *opts = to_f_##_f_##_opts(item);	\
+		int ret;						\
+									\
+		mutex_lock(&opts->lock);				\
+		ret = sprintf(page, "%02x\n", opts->_n_);		\
+		mutex_unlock(&opts->lock);				\
+									\
+		return ret;						\
+	}								\
+									\
+	static ssize_t _f_##_opts_##_n_##_store(struct config_item *item,\
+						const char *page,	\
+						size_t len)		\
+	{								\
+		struct f_##_f_##_opts *opts = to_f_##_f_##_opts(item);	\
+		int ret;						\
+		u8 val;							\
+									\
+		mutex_lock(&opts->lock);				\
+		ret = sscanf(page, "%02hhx", &val);			\
+		if (ret > 0) {						\
+			opts->_n_ = val;				\
+			ret = len;					\
+		}							\
+		mutex_unlock(&opts->lock);				\
+									\
+		return ret;						\
+	}								\
+									\
+	CONFIGFS_ATTR(_f_##_opts_, _n_)
+
 #endif /* __U_ETHER_CONFIGFS_H */
diff --git a/drivers/usb/gadget/function/u_rndis.h b/drivers/usb/gadget/function/u_rndis.h
index 4eafd5050545..a35ee3c2545d 100644
--- a/drivers/usb/gadget/function/u_rndis.h
+++ b/drivers/usb/gadget/function/u_rndis.h
@@ -29,6 +29,10 @@ struct f_rndis_opts {
 	struct usb_os_desc		rndis_os_desc;
 	char				rndis_ext_compat_id[16];
 
+	u8				class;
+	u8				subclass;
+	u8				protocol;
+
 	/*
 	 * Read/write access to configfs attributes is handled by configfs.
 	 *
diff --git a/drivers/usb/gadget/function/u_serial.c b/drivers/usb/gadget/function/u_serial.c
index 9b0805f55ad7..4176216d54be 100644
--- a/drivers/usb/gadget/function/u_serial.c
+++ b/drivers/usb/gadget/function/u_serial.c
@@ -537,7 +537,7 @@ static void gs_rx_push(unsigned long _port)
 		}
 
 		/* push data to (open) tty */
-		if (req->actual) {
+		if (req->actual && tty) {
 			char		*packet = req->buf;
 			unsigned	size = req->actual;
 			unsigned	n;
diff --git a/drivers/usb/gadget/udc/bdc/Kconfig b/drivers/usb/gadget/udc/bdc/Kconfig
index eb8b55392360..c74ac25dddcd 100644
--- a/drivers/usb/gadget/udc/bdc/Kconfig
+++ b/drivers/usb/gadget/udc/bdc/Kconfig
@@ -1,6 +1,7 @@
 config USB_BDC_UDC
 	tristate "Broadcom USB3.0 device controller IP driver(BDC)"
 	depends on USB_GADGET && HAS_DMA
+	default ARCH_BRCMSTB
 
 	help
 	BDC is Broadcom's USB3.0 device controller IP. If your SOC has a BDC IP
diff --git a/drivers/usb/gadget/udc/bdc/bdc.h b/drivers/usb/gadget/udc/bdc/bdc.h
index 916d47135cac..6df0352cdc50 100644
--- a/drivers/usb/gadget/udc/bdc/bdc.h
+++ b/drivers/usb/gadget/udc/bdc/bdc.h
@@ -27,8 +27,8 @@
 #include <linux/usb/gadget.h>
 #include <asm/unaligned.h>
 
-#define BRCM_BDC_NAME "bdc_usb3"
-#define BRCM_BDC_DESC "BDC device controller driver"
+#define BRCM_BDC_NAME "bdc"
+#define BRCM_BDC_DESC "Broadcom USB Device Controller driver"
 
 #define DMA_ADDR_INVALID        (~(dma_addr_t)0)
 
@@ -83,14 +83,14 @@
 
 #define BDC_DVCSA	0x50
 #define BDC_DVCSB	0x54
-#define BDC_EPSTS0(n)	(0x60 + (n * 0x10))
-#define BDC_EPSTS1(n)	(0x64 + (n * 0x10))
-#define BDC_EPSTS2(n)	(0x68 + (n * 0x10))
-#define BDC_EPSTS3(n)	(0x6c + (n * 0x10))
-#define BDC_EPSTS4(n)	(0x70 + (n * 0x10))
-#define BDC_EPSTS5(n)	(0x74 + (n * 0x10))
-#define BDC_EPSTS6(n)	(0x78 + (n * 0x10))
-#define BDC_EPSTS7(n)	(0x7c + (n * 0x10))
+#define BDC_EPSTS0	0x60
+#define BDC_EPSTS1	0x64
+#define BDC_EPSTS2	0x68
+#define BDC_EPSTS3	0x6c
+#define BDC_EPSTS4	0x70
+#define BDC_EPSTS5	0x74
+#define BDC_EPSTS6	0x78
+#define BDC_EPSTS7	0x7c
 #define BDC_SRRBAL(n)	(0x200 + (n * 0x10))
 #define BDC_SRRBAH(n)	(0x204 + (n * 0x10))
 #define BDC_SRRINT(n)	(0x208 + (n * 0x10))
@@ -413,6 +413,9 @@ struct bdc {
 	/* device lock */
 	spinlock_t	lock;
 
+	/* generic phy */
+	struct phy      **phys;
+	int num_phys;
 	/* num of endpoints for a particular instantiation of IP */
 	unsigned int num_eps;
 	/*
@@ -454,6 +457,7 @@ struct bdc {
 	 * Func Wake packet every 2.5 secs. Refer to USB3 spec section 8.5.6.4
 	 */
 	struct delayed_work	func_wake_notify;
+	struct clk		*clk;
 };
 
 static inline u32 bdc_readl(void __iomem *base, u32 offset)
diff --git a/drivers/usb/gadget/udc/bdc/bdc_core.c b/drivers/usb/gadget/udc/bdc/bdc_core.c
index e9bd8d4abca0..7a8af4b916cf 100644
--- a/drivers/usb/gadget/udc/bdc/bdc_core.c
+++ b/drivers/usb/gadget/udc/bdc/bdc_core.c
@@ -24,9 +24,11 @@
 #include <linux/dma-mapping.h>
 #include <linux/dmapool.h>
 #include <linux/of.h>
+#include <linux/phy/phy.h>
 #include <linux/moduleparam.h>
 #include <linux/usb/ch9.h>
 #include <linux/usb/gadget.h>
+#include <linux/clk.h>
 
 #include "bdc.h"
 #include "bdc_dbg.h"
@@ -444,6 +446,43 @@ static int bdc_hw_init(struct bdc *bdc)
 	return 0;
 }
 
+static int bdc_phy_init(struct bdc *bdc)
+{
+	int phy_num;
+	int ret;
+
+	for (phy_num = 0; phy_num < bdc->num_phys; phy_num++) {
+		ret = phy_init(bdc->phys[phy_num]);
+		if (ret)
+			goto err_exit_phy;
+		ret = phy_power_on(bdc->phys[phy_num]);
+		if (ret) {
+			phy_exit(bdc->phys[phy_num]);
+			goto err_exit_phy;
+		}
+	}
+
+	return 0;
+
+err_exit_phy:
+	while (--phy_num >= 0) {
+		phy_power_off(bdc->phys[phy_num]);
+		phy_exit(bdc->phys[phy_num]);
+	}
+
+	return ret;
+}
+
+static void bdc_phy_exit(struct bdc *bdc)
+{
+	int phy_num;
+
+	for (phy_num = 0; phy_num < bdc->num_phys; phy_num++) {
+		phy_power_off(bdc->phys[phy_num]);
+		phy_exit(bdc->phys[phy_num]);
+	}
+}
+
 static int bdc_probe(struct platform_device *pdev)
 {
 	struct bdc *bdc;
@@ -452,12 +491,29 @@ static int bdc_probe(struct platform_device *pdev)
 	int irq;
 	u32 temp;
 	struct device *dev = &pdev->dev;
+	struct clk *clk;
+	int phy_num;
 
 	dev_dbg(dev, "%s()\n", __func__);
+
+	clk = devm_clk_get(dev, "sw_usbd");
+	if (IS_ERR(clk)) {
+		dev_info(dev, "Clock not found in Device Tree\n");
+		clk = NULL;
+	}
+
+	ret = clk_prepare_enable(clk);
+	if (ret) {
+		dev_err(dev, "could not enable clock\n");
+		return ret;
+	}
+
 	bdc = devm_kzalloc(dev, sizeof(*bdc), GFP_KERNEL);
 	if (!bdc)
 		return -ENOMEM;
 
+	bdc->clk = clk;
+
 	res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
 	bdc->regs = devm_ioremap_resource(dev, res);
 	if (IS_ERR(bdc->regs)) {
@@ -473,35 +529,66 @@ static int bdc_probe(struct platform_device *pdev)
 	platform_set_drvdata(pdev, bdc);
 	bdc->irq = irq;
 	bdc->dev = dev;
-	dev_dbg(bdc->dev, "bdc->regs: %p irq=%d\n", bdc->regs, bdc->irq);
+	dev_dbg(dev, "bdc->regs: %p irq=%d\n", bdc->regs, bdc->irq);
+
+	bdc->num_phys = of_count_phandle_with_args(dev->of_node,
+						"phys", "#phy-cells");
+	if (bdc->num_phys > 0) {
+		bdc->phys = devm_kcalloc(dev, bdc->num_phys,
+					sizeof(struct phy *), GFP_KERNEL);
+		if (!bdc->phys)
+			return -ENOMEM;
+	} else {
+		bdc->num_phys = 0;
+	}
+	dev_info(dev, "Using %d phy(s)\n", bdc->num_phys);
+
+	for (phy_num = 0; phy_num < bdc->num_phys; phy_num++) {
+		bdc->phys[phy_num] = devm_of_phy_get_by_index(
+			dev, dev->of_node, phy_num);
+		if (IS_ERR(bdc->phys[phy_num])) {
+			ret = PTR_ERR(bdc->phys[phy_num]);
+			dev_err(bdc->dev,
+				"BDC phy specified but not found:%d\n", ret);
+			return ret;
+		}
+	}
+
+	ret = bdc_phy_init(bdc);
+	if (ret) {
+		dev_err(bdc->dev, "BDC phy init failure:%d\n", ret);
+		return ret;
+	}
 
 	temp = bdc_readl(bdc->regs, BDC_BDCCAP1);
 	if ((temp & BDC_P64) &&
 			!dma_set_mask_and_coherent(dev, DMA_BIT_MASK(64))) {
-		dev_dbg(bdc->dev, "Using 64-bit address\n");
+		dev_dbg(dev, "Using 64-bit address\n");
 	} else {
-		ret = dma_set_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(32));
+		ret = dma_set_mask_and_coherent(dev, DMA_BIT_MASK(32));
 		if (ret) {
-			dev_err(bdc->dev, "No suitable DMA config available, abort\n");
+			dev_err(dev,
+				"No suitable DMA config available, abort\n");
 			return -ENOTSUPP;
 		}
-		dev_dbg(bdc->dev, "Using 32-bit address\n");
+		dev_dbg(dev, "Using 32-bit address\n");
 	}
 	ret = bdc_hw_init(bdc);
 	if (ret) {
-		dev_err(bdc->dev, "BDC init failure:%d\n", ret);
-		return ret;
+		dev_err(dev, "BDC init failure:%d\n", ret);
+		goto phycleanup;
 	}
 	ret = bdc_udc_init(bdc);
 	if (ret) {
-		dev_err(bdc->dev, "BDC Gadget init failure:%d\n", ret);
+		dev_err(dev, "BDC Gadget init failure:%d\n", ret);
 		goto cleanup;
 	}
 	return 0;
 
 cleanup:
 	bdc_hw_exit(bdc);
-
+phycleanup:
+	bdc_phy_exit(bdc);
 	return ret;
 }
 
@@ -513,13 +600,56 @@ static int bdc_remove(struct platform_device *pdev)
 	dev_dbg(bdc->dev, "%s ()\n", __func__);
 	bdc_udc_exit(bdc);
 	bdc_hw_exit(bdc);
+	bdc_phy_exit(bdc);
+	clk_disable_unprepare(bdc->clk);
+	return 0;
+}
+
+#ifdef CONFIG_PM_SLEEP
+static int bdc_suspend(struct device *dev)
+{
+	struct bdc *bdc = dev_get_drvdata(dev);
+
+	clk_disable_unprepare(bdc->clk);
+	return 0;
+}
+
+static int bdc_resume(struct device *dev)
+{
+	struct bdc *bdc = dev_get_drvdata(dev);
+	int ret;
+
+	ret = clk_prepare_enable(bdc->clk);
+	if (ret) {
+		dev_err(bdc->dev, "err enabling the clock\n");
+		return ret;
+	}
+	ret = bdc_reinit(bdc);
+	if (ret) {
+		dev_err(bdc->dev, "err in bdc reinit\n");
+		return ret;
+	}
 
 	return 0;
 }
 
+#endif /* CONFIG_PM_SLEEP */
+
+static SIMPLE_DEV_PM_OPS(bdc_pm_ops, bdc_suspend,
+		bdc_resume);
+
+static const struct of_device_id bdc_of_match[] = {
+	{ .compatible = "brcm,bdc-v0.16" },
+	{ .compatible = "brcm,bdc" },
+	{ /* sentinel */ }
+};
+
 static struct platform_driver bdc_driver = {
 	.driver		= {
 		.name	= BRCM_BDC_NAME,
+		.owner	= THIS_MODULE,
+		.pm = &bdc_pm_ops,
+		.of_match_table	= bdc_of_match,
 	},
 	.probe		= bdc_probe,
 	.remove		= bdc_remove,
diff --git a/drivers/usb/gadget/udc/bdc/bdc_dbg.c b/drivers/usb/gadget/udc/bdc/bdc_dbg.c
index 5945dbc47825..ac98f6f681b7 100644
--- a/drivers/usb/gadget/udc/bdc/bdc_dbg.c
+++ b/drivers/usb/gadget/udc/bdc/bdc_dbg.c
@@ -40,28 +40,28 @@ void bdc_dump_epsts(struct bdc *bdc)
 {
 	u32 temp;
 
-	temp = bdc_readl(bdc->regs, BDC_EPSTS0(0));
+	temp = bdc_readl(bdc->regs, BDC_EPSTS0);
 	dev_vdbg(bdc->dev, "BDC_EPSTS0:0x%08x\n", temp);
 
-	temp = bdc_readl(bdc->regs, BDC_EPSTS1(0));
+	temp = bdc_readl(bdc->regs, BDC_EPSTS1);
 	dev_vdbg(bdc->dev, "BDC_EPSTS1:0x%x\n", temp);
 
-	temp = bdc_readl(bdc->regs, BDC_EPSTS2(0));
+	temp = bdc_readl(bdc->regs, BDC_EPSTS2);
 	dev_vdbg(bdc->dev, "BDC_EPSTS2:0x%08x\n", temp);
 
-	temp = bdc_readl(bdc->regs, BDC_EPSTS3(0));
+	temp = bdc_readl(bdc->regs, BDC_EPSTS3);
 	dev_vdbg(bdc->dev, "BDC_EPSTS3:0x%08x\n", temp);
 
-	temp = bdc_readl(bdc->regs, BDC_EPSTS4(0));
+	temp = bdc_readl(bdc->regs, BDC_EPSTS4);
 	dev_vdbg(bdc->dev, "BDC_EPSTS4:0x%08x\n", temp);
 
-	temp = bdc_readl(bdc->regs, BDC_EPSTS5(0));
+	temp = bdc_readl(bdc->regs, BDC_EPSTS5);
 	dev_vdbg(bdc->dev, "BDC_EPSTS5:0x%08x\n", temp);
 
-	temp = bdc_readl(bdc->regs, BDC_EPSTS6(0));
+	temp = bdc_readl(bdc->regs, BDC_EPSTS6);
 	dev_vdbg(bdc->dev, "BDC_EPSTS6:0x%08x\n", temp);
 
-	temp = bdc_readl(bdc->regs, BDC_EPSTS7(0));
+	temp = bdc_readl(bdc->regs, BDC_EPSTS7);
 	dev_vdbg(bdc->dev, "BDC_EPSTS7:0x%08x\n", temp);
 }
 
diff --git a/drivers/usb/gadget/udc/bdc/bdc_ep.c b/drivers/usb/gadget/udc/bdc/bdc_ep.c
index ff1ef24d1777..bfd8f7ade935 100644
--- a/drivers/usb/gadget/udc/bdc/bdc_ep.c
+++ b/drivers/usb/gadget/udc/bdc/bdc_ep.c
@@ -777,9 +777,9 @@ static int ep_dequeue(struct bdc_ep *ep, struct bdc_req *req)
 	 */
 
 	/* The current hw dequeue pointer */
-	tmp_32 = bdc_readl(bdc->regs, BDC_EPSTS0(0));
+	tmp_32 = bdc_readl(bdc->regs, BDC_EPSTS0);
 	deq_ptr_64 = tmp_32;
-	tmp_32 = bdc_readl(bdc->regs, BDC_EPSTS1(0));
+	tmp_32 = bdc_readl(bdc->regs, BDC_EPSTS1);
 	deq_ptr_64 |= ((u64)tmp_32 << 32);
 
 	/* we have the dma addr of next bd that will be fetched by hardware */
diff --git a/drivers/usb/gadget/udc/bdc/bdc_udc.c b/drivers/usb/gadget/udc/bdc/bdc_udc.c
index aae7458d8986..c84346146456 100644
--- a/drivers/usb/gadget/udc/bdc/bdc_udc.c
+++ b/drivers/usb/gadget/udc/bdc/bdc_udc.c
@@ -249,6 +249,7 @@ void bdc_sr_uspc(struct bdc *bdc, struct bdc_sr *sreport)
 			disconn = true;
 		else if ((uspc & BDC_PCS) && !BDC_PST(uspc))
 			connected = true;
+		clear_flags |= BDC_PCC;
 	}
 
 	/* Change in VBus and VBus is present */
@@ -259,16 +260,16 @@ void bdc_sr_uspc(struct bdc *bdc, struct bdc_sr *sreport)
 			bdc_softconn(bdc);
 			usb_gadget_set_state(&bdc->gadget, USB_STATE_POWERED);
 		}
-		clear_flags = BDC_VBC;
+		clear_flags |= BDC_VBC;
 	} else if ((uspc & BDC_PRS) || (uspc & BDC_PRC) || disconn) {
 		/* Hot reset, warm reset, 2.0 bus reset or disconn */
 		dev_dbg(bdc->dev, "Port reset or disconn\n");
 		bdc_uspc_disconnected(bdc, disconn);
-		clear_flags = BDC_PCC|BDC_PCS|BDC_PRS|BDC_PRC;
+		clear_flags |= BDC_PRC;
 	} else if ((uspc & BDC_PSC) && (uspc & BDC_PCS)) {
 		/* Change in Link state */
 		handle_link_state_change(bdc, uspc);
-		clear_flags = BDC_PSC|BDC_PCS;
+		clear_flags |= BDC_PSC;
 	}
 
 	/*
diff --git a/drivers/usb/gadget/udc/core.c b/drivers/usb/gadget/udc/core.c
index e6f04eee95c4..75c51ca4ee0f 100644
--- a/drivers/usb/gadget/udc/core.c
+++ b/drivers/usb/gadget/udc/core.c
@@ -812,6 +812,8 @@ int usb_gadget_map_request_by_dev(struct device *dev,
 			dev_err(dev, "failed to map buffer\n");
 			return -EFAULT;
 		}
+
+		req->dma_mapped = 1;
 	}
 
 	return 0;
@@ -836,9 +838,10 @@ void usb_gadget_unmap_request_by_dev(struct device *dev,
 				is_in ? DMA_TO_DEVICE : DMA_FROM_DEVICE);
 
 		req->num_mapped_sgs = 0;
-	} else {
+	} else if (req->dma_mapped) {
 		dma_unmap_single(dev, req->dma, req->length,
 				is_in ? DMA_TO_DEVICE : DMA_FROM_DEVICE);
+		req->dma_mapped = 0;
 	}
 }
 EXPORT_SYMBOL_GPL(usb_gadget_unmap_request_by_dev);
@@ -1130,6 +1133,7 @@ static int check_pending_gadget_drivers(struct usb_udc *udc)
  * @release: a gadget release function.
  *
  * Returns zero on success, negative errno otherwise.
+ * Calls the gadget release function in the latter case.
  */
 int usb_add_gadget_udc_release(struct device *parent, struct usb_gadget *gadget,
 		void (*release)(struct device *dev))
@@ -1137,10 +1141,6 @@ int usb_add_gadget_udc_release(struct device *parent, struct usb_gadget *gadget,
 	struct usb_udc		*udc;
 	int			ret = -ENOMEM;
 
-	udc = kzalloc(sizeof(*udc), GFP_KERNEL);
-	if (!udc)
-		goto err1;
-
 	dev_set_name(&gadget->dev, "gadget");
 	INIT_WORK(&gadget->work, usb_gadget_state_work);
 	gadget->dev.parent = parent;
@@ -1150,7 +1150,13 @@ int usb_add_gadget_udc_release(struct device *parent, struct usb_gadget *gadget,
 	else
 		gadget->dev.release = usb_udc_nop_release;
 
-	ret = device_register(&gadget->dev);
+	device_initialize(&gadget->dev);
+
+	udc = kzalloc(sizeof(*udc), GFP_KERNEL);
+	if (!udc)
+		goto err1;
+
+	ret = device_add(&gadget->dev);
 	if (ret)
 		goto err2;
 
@@ -1197,10 +1203,10 @@ err3:
 	device_del(&gadget->dev);
 
 err2:
-	put_device(&gadget->dev);
 	kfree(udc);
 
 err1:
+	put_device(&gadget->dev);
 	return ret;
 }
 EXPORT_SYMBOL_GPL(usb_add_gadget_udc_release);
diff --git a/drivers/usb/gadget/udc/dummy_hcd.c b/drivers/usb/gadget/udc/dummy_hcd.c
index 3c3760315910..a030d7923d7d 100644
--- a/drivers/usb/gadget/udc/dummy_hcd.c
+++ b/drivers/usb/gadget/udc/dummy_hcd.c
@@ -2776,7 +2776,7 @@ static int __init init(void)
 		if (retval < 0) {
 			i--;
 			while (i >= 0)
-				platform_device_del(the_udc_pdev[i]);
+				platform_device_del(the_udc_pdev[i--]);
 			goto err_add_udc;
 		}
 	}
diff --git a/drivers/usb/gadget/udc/renesas_usb3.c b/drivers/usb/gadget/udc/renesas_usb3.c
index e1de8fe599a3..df37c1e6e9d5 100644
--- a/drivers/usb/gadget/udc/renesas_usb3.c
+++ b/drivers/usb/gadget/udc/renesas_usb3.c
@@ -8,6 +8,7 @@
  * the Free Software Foundation; version 2 of the License.
  */
 
+#include <linux/debugfs.h>
 #include <linux/delay.h>
 #include <linux/dma-mapping.h>
 #include <linux/err.h>
@@ -20,6 +21,8 @@
 #include <linux/pm_runtime.h>
 #include <linux/sizes.h>
 #include <linux/slab.h>
+#include <linux/sys_soc.h>
+#include <linux/uaccess.h>
 #include <linux/usb/ch9.h>
 #include <linux/usb/gadget.h>
 
@@ -347,6 +350,7 @@ struct renesas_usb3 {
 	bool workaround_for_vbus;
 	bool extcon_host;		/* check id and set EXTCON_USB_HOST */
 	bool extcon_usb;		/* check vbus and set EXTCON_USB */
+	bool forced_b_device;
 };
 
 #define gadget_to_renesas_usb3(_gadget)	\
@@ -663,7 +667,9 @@ static void usb3_mode_config(struct renesas_usb3 *usb3, bool host, bool a_dev)
 	spin_lock_irqsave(&usb3->lock, flags);
 	usb3_set_mode(usb3, host);
 	usb3_vbus_out(usb3, a_dev);
-	if (!host && a_dev)		/* for A-Peripheral */
+	/* for A-Peripheral or forced B-device mode */
+	if ((!host && a_dev) ||
+	    (usb3->workaround_for_vbus && usb3->forced_b_device))
 		usb3_connect(usb3);
 	spin_unlock_irqrestore(&usb3->lock, flags);
 }
@@ -677,7 +683,7 @@ static void usb3_check_id(struct renesas_usb3 *usb3)
 {
 	usb3->extcon_host = usb3_is_a_device(usb3);
 
-	if (usb3->extcon_host)
+	if (usb3->extcon_host && !usb3->forced_b_device)
 		usb3_mode_config(usb3, true, true);
 	else
 		usb3_mode_config(usb3, false, false);
@@ -2192,7 +2198,7 @@ static void renesas_usb3_ep_fifo_flush(struct usb_ep *_ep)
 	}
 }
 
-static struct usb_ep_ops renesas_usb3_ep_ops = {
+static const struct usb_ep_ops renesas_usb3_ep_ops = {
 	.enable		= renesas_usb3_ep_enable,
 	.disable	= renesas_usb3_ep_disable,
 
@@ -2283,6 +2289,9 @@ static ssize_t role_store(struct device *dev, struct device_attribute *attr,
 	if (!usb3->driver)
 		return -ENODEV;
 
+	if (usb3->forced_b_device)
+		return -EBUSY;
+
 	if (!strncmp(buf, "host", strlen("host")))
 		new_mode_is_host = true;
 	else if (!strncmp(buf, "peripheral", strlen("peripheral")))
@@ -2310,6 +2319,70 @@ static ssize_t role_show(struct device *dev, struct device_attribute *attr,
 }
 static DEVICE_ATTR_RW(role);
 
+static int renesas_usb3_b_device_show(struct seq_file *s, void *unused)
+{
+	struct renesas_usb3 *usb3 = s->private;
+
+	seq_printf(s, "%d\n", usb3->forced_b_device);
+
+	return 0;
+}
+
+static int renesas_usb3_b_device_open(struct inode *inode, struct file *file)
+{
+	return single_open(file, renesas_usb3_b_device_show, inode->i_private);
+}
+
+static ssize_t renesas_usb3_b_device_write(struct file *file,
+					   const char __user *ubuf,
+					   size_t count, loff_t *ppos)
+{
+	struct seq_file *s = file->private_data;
+	struct renesas_usb3 *usb3 = s->private;
+	char buf[32];
+
+	if (!usb3->driver)
+		return -ENODEV;
+
+	if (copy_from_user(&buf, ubuf, min_t(size_t, sizeof(buf) - 1, count)))
+		return -EFAULT;
+
+	if (!strncmp(buf, "1", 1))
+		usb3->forced_b_device = true;
+	else
+		usb3->forced_b_device = false;
+
+	/* Let this driver call usb3_connect() anyway */
+	usb3_check_id(usb3);
+
+	return count;
+}
+
+static const struct file_operations renesas_usb3_b_device_fops = {
+	.open = renesas_usb3_b_device_open,
+	.write = renesas_usb3_b_device_write,
+	.read = seq_read,
+	.llseek = seq_lseek,
+	.release = single_release,
+};
+
+static void renesas_usb3_debugfs_init(struct renesas_usb3 *usb3,
+				      struct device *dev)
+{
+	struct dentry *root, *file;
+
+	root = debugfs_create_dir(dev_name(dev), NULL);
+	if (IS_ERR_OR_NULL(root)) {
+		dev_info(dev, "%s: Can't create the root\n", __func__);
+		return;
+	}
+
+	file = debugfs_create_file("b_device", 0644, root, usb3,
+				   &renesas_usb3_b_device_fops);
+	if (!file)
+		dev_info(dev, "%s: Can't create debugfs mode\n", __func__);
+}
+
 /*------- platform_driver ------------------------------------------------*/
 static int renesas_usb3_remove(struct platform_device *pdev)
 {
@@ -2432,22 +2505,40 @@ static void renesas_usb3_init_ram(struct renesas_usb3 *usb3, struct device *dev,
 	}
 }
 
-static const struct renesas_usb3_priv renesas_usb3_priv_r8a7795 = {
+static const struct renesas_usb3_priv renesas_usb3_priv_r8a7795_es1 = {
 	.ramsize_per_ramif = SZ_16K,
 	.num_ramif = 2,
 	.ramsize_per_pipe = SZ_4K,
 	.workaround_for_vbus = true,
 };
 
+static const struct renesas_usb3_priv renesas_usb3_priv_gen3 = {
+	.ramsize_per_ramif = SZ_16K,
+	.num_ramif = 4,
+	.ramsize_per_pipe = SZ_4K,
+};
+
 static const struct of_device_id usb3_of_match[] = {
 	{
 		.compatible = "renesas,r8a7795-usb3-peri",
-		.data = &renesas_usb3_priv_r8a7795,
+		.data = &renesas_usb3_priv_gen3,
+	},
+	{
+		.compatible = "renesas,rcar-gen3-usb3-peri",
+		.data = &renesas_usb3_priv_gen3,
 	},
 	{ },
 };
 MODULE_DEVICE_TABLE(of, usb3_of_match);
 
+static const struct soc_device_attribute renesas_usb3_quirks_match[] = {
+	{
+		.soc_id = "r8a7795", .revision = "ES1.*",
+		.data = &renesas_usb3_priv_r8a7795_es1,
+	},
+	{ /* sentinel */ },
+};
+
 static const unsigned int renesas_usb3_cable[] = {
 	EXTCON_USB,
 	EXTCON_USB_HOST,
@@ -2461,15 +2552,23 @@ static int renesas_usb3_probe(struct platform_device *pdev)
 	const struct of_device_id *match;
 	int irq, ret;
 	const struct renesas_usb3_priv *priv;
+	const struct soc_device_attribute *attr;
 
 	match = of_match_node(usb3_of_match, pdev->dev.of_node);
 	if (!match)
 		return -ENODEV;
-	priv = match->data;
+
+	attr = soc_device_match(renesas_usb3_quirks_match);
+	if (attr)
+		priv = attr->data;
+	else
+		priv = match->data;
 
 	irq = platform_get_irq(pdev, 0);
-	if (irq < 0)
-		return -ENODEV;
+	if (irq < 0) {
+		dev_err(&pdev->dev, "Failed to get IRQ: %d\n", irq);
+		return irq;
+	}
 
 	usb3 = devm_kzalloc(&pdev->dev, sizeof(*usb3), GFP_KERNEL);
 	if (!usb3)
@@ -2527,6 +2626,8 @@ static int renesas_usb3_probe(struct platform_device *pdev)
 
 	usb3->workaround_for_vbus = priv->workaround_for_vbus;
 
+	renesas_usb3_debugfs_init(usb3, &pdev->dev);
+
 	dev_info(&pdev->dev, "probed\n");
 
 	return 0;
diff --git a/drivers/usb/mtu3/mtu3_plat.c b/drivers/usb/mtu3/mtu3_plat.c
index 0d3ebb353e08..088e3e685c4f 100644
--- a/drivers/usb/mtu3/mtu3_plat.c
+++ b/drivers/usb/mtu3/mtu3_plat.c
@@ -500,6 +500,7 @@ static const struct dev_pm_ops mtu3_pm_ops = {
 
 static const struct of_device_id mtu3_of_match[] = {
 	{.compatible = "mediatek,mt8173-mtu3",},
+	{.compatible = "mediatek,mtu3",},
 	{},
 };
 
diff --git a/drivers/usb/phy/phy-qcom-8x16-usb.c b/drivers/usb/phy/phy-qcom-8x16-usb.c
index b6a83a5cbad3..679afeaaa9a8 100644
--- a/drivers/usb/phy/phy-qcom-8x16-usb.c
+++ b/drivers/usb/phy/phy-qcom-8x16-usb.c
@@ -270,12 +270,9 @@ static int phy_8x16_probe(struct platform_device *pdev)
 	platform_set_drvdata(pdev, qphy);
 
 	res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
-	if (!res)
-		return -EINVAL;
-
-	qphy->regs = devm_ioremap(&pdev->dev, res->start, resource_size(res));
-	if (!qphy->regs)
-		return -ENOMEM;
+	qphy->regs = devm_ioremap_resource(&pdev->dev, res);
+	if (IS_ERR(qphy->regs))
+		return PTR_ERR(qphy->regs);
 
 	phy			= &qphy->phy;
 	phy->dev		= &pdev->dev;
diff --git a/drivers/usb/phy/phy.c b/drivers/usb/phy/phy.c
index 75f3127407af..89f4ac4cd93e 100644
--- a/drivers/usb/phy/phy.c
+++ b/drivers/usb/phy/phy.c
@@ -18,6 +18,18 @@
 
 #include <linux/usb/phy.h>
 
+/* Default current range by charger type. */
+#define DEFAULT_SDP_CUR_MIN	2
+#define DEFAULT_SDP_CUR_MAX	500
+#define DEFAULT_SDP_CUR_MIN_SS	150
+#define DEFAULT_SDP_CUR_MAX_SS	900
+#define DEFAULT_DCP_CUR_MIN	500
+#define DEFAULT_DCP_CUR_MAX	5000
+#define DEFAULT_CDP_CUR_MIN	1500
+#define DEFAULT_CDP_CUR_MAX	5000
+#define DEFAULT_ACA_CUR_MIN	1500
+#define DEFAULT_ACA_CUR_MAX	5000
+
 static LIST_HEAD(phy_list);
 static LIST_HEAD(phy_bind_list);
 static DEFINE_SPINLOCK(phy_lock);
@@ -77,6 +89,221 @@ static struct usb_phy *__of_usb_find_phy(struct device_node *node)
 	return ERR_PTR(-EPROBE_DEFER);
 }
 
+static void usb_phy_set_default_current(struct usb_phy *usb_phy)
+{
+	usb_phy->chg_cur.sdp_min = DEFAULT_SDP_CUR_MIN;
+	usb_phy->chg_cur.sdp_max = DEFAULT_SDP_CUR_MAX;
+	usb_phy->chg_cur.dcp_min = DEFAULT_DCP_CUR_MIN;
+	usb_phy->chg_cur.dcp_max = DEFAULT_DCP_CUR_MAX;
+	usb_phy->chg_cur.cdp_min = DEFAULT_CDP_CUR_MIN;
+	usb_phy->chg_cur.cdp_max = DEFAULT_CDP_CUR_MAX;
+	usb_phy->chg_cur.aca_min = DEFAULT_ACA_CUR_MIN;
+	usb_phy->chg_cur.aca_max = DEFAULT_ACA_CUR_MAX;
+}
+
+/**
+ * usb_phy_notify_charger_work - notify the USB charger state
+ * @work - the charger work to notify the USB charger state
+ *
+ * This work can be issued when USB charger state has been changed or
+ * USB charger current has been changed, then we can notify the current
+ * what can be drawn to power user and the charger state to userspace.
+ *
+ * If we get the charger type from extcon subsystem, we can notify the
+ * charger state to power user automatically by usb_phy_get_charger_type()
+ * issuing from extcon subsystem.
+ *
+ * If we get the charger type from ->charger_detect() instead of extcon
+ * subsystem, the usb phy driver should issue usb_phy_set_charger_state()
+ * to set charger state when the charger state has been changed.
+ */
+static void usb_phy_notify_charger_work(struct work_struct *work)
+{
+	struct usb_phy *usb_phy = container_of(work, struct usb_phy, chg_work);
+	char uchger_state[50] = { 0 };
+	char *envp[] = { uchger_state, NULL };
+	unsigned int min, max;
+
+	switch (usb_phy->chg_state) {
+	case USB_CHARGER_PRESENT:
+		usb_phy_get_charger_current(usb_phy, &min, &max);
+
+		atomic_notifier_call_chain(&usb_phy->notifier, max, usb_phy);
+		snprintf(uchger_state, ARRAY_SIZE(uchger_state),
+			 "USB_CHARGER_STATE=%s", "USB_CHARGER_PRESENT");
+		break;
+	case USB_CHARGER_ABSENT:
+		usb_phy_set_default_current(usb_phy);
+
+		atomic_notifier_call_chain(&usb_phy->notifier, 0, usb_phy);
+		snprintf(uchger_state, ARRAY_SIZE(uchger_state),
+			 "USB_CHARGER_STATE=%s", "USB_CHARGER_ABSENT");
+		break;
+	default:
+		dev_warn(usb_phy->dev, "Unknown USB charger state: %d\n",
+			 usb_phy->chg_state);
+		return;
+	}
+
+	kobject_uevent_env(&usb_phy->dev->kobj, KOBJ_CHANGE, envp);
+}
+
+static void __usb_phy_get_charger_type(struct usb_phy *usb_phy)
+{
+	if (extcon_get_state(usb_phy->edev, EXTCON_CHG_USB_SDP) > 0) {
+		usb_phy->chg_type = SDP_TYPE;
+		usb_phy->chg_state = USB_CHARGER_PRESENT;
+	} else if (extcon_get_state(usb_phy->edev, EXTCON_CHG_USB_CDP) > 0) {
+		usb_phy->chg_type = CDP_TYPE;
+		usb_phy->chg_state = USB_CHARGER_PRESENT;
+	} else if (extcon_get_state(usb_phy->edev, EXTCON_CHG_USB_DCP) > 0) {
+		usb_phy->chg_type = DCP_TYPE;
+		usb_phy->chg_state = USB_CHARGER_PRESENT;
+	} else if (extcon_get_state(usb_phy->edev, EXTCON_CHG_USB_ACA) > 0) {
+		usb_phy->chg_type = ACA_TYPE;
+		usb_phy->chg_state = USB_CHARGER_PRESENT;
+	} else {
+		usb_phy->chg_type = UNKNOWN_TYPE;
+		usb_phy->chg_state = USB_CHARGER_ABSENT;
+	}
+
+	schedule_work(&usb_phy->chg_work);
+}
+
+/**
+ * usb_phy_get_charger_type - get charger type from extcon subsystem
+ * @nb -the notifier block to determine charger type
+ * @state - the cable state
+ * @data - private data
+ *
+ * Determin the charger type from extcon subsystem which also means the
+ * charger state has been chaned, then we should notify this event.
+ */
+static int usb_phy_get_charger_type(struct notifier_block *nb,
+				    unsigned long state, void *data)
+{
+	struct usb_phy *usb_phy = container_of(nb, struct usb_phy, type_nb);
+
+	__usb_phy_get_charger_type(usb_phy);
+	return NOTIFY_OK;
+}
+
+/**
+ * usb_phy_set_charger_current - set the USB charger current
+ * @usb_phy - the USB phy to be used
+ * @mA - the current need to be set
+ *
+ * Usually we only change the charger default current when USB finished the
+ * enumeration as one SDP charger. As one SDP charger, usb_phy_set_power()
+ * will issue this function to change charger current when after setting USB
+ * configuration, or suspend/resume USB. For other type charger, we should
+ * use the default charger current and we do not suggest to issue this function
+ * to change the charger current.
+ *
+ * When USB charger current has been changed, we need to notify the power users.
+ */
+void usb_phy_set_charger_current(struct usb_phy *usb_phy, unsigned int mA)
+{
+	switch (usb_phy->chg_type) {
+	case SDP_TYPE:
+		if (usb_phy->chg_cur.sdp_max == mA)
+			return;
+
+		usb_phy->chg_cur.sdp_max = (mA > DEFAULT_SDP_CUR_MAX_SS) ?
+			DEFAULT_SDP_CUR_MAX_SS : mA;
+		break;
+	case DCP_TYPE:
+		if (usb_phy->chg_cur.dcp_max == mA)
+			return;
+
+		usb_phy->chg_cur.dcp_max = (mA > DEFAULT_DCP_CUR_MAX) ?
+			DEFAULT_DCP_CUR_MAX : mA;
+		break;
+	case CDP_TYPE:
+		if (usb_phy->chg_cur.cdp_max == mA)
+			return;
+
+		usb_phy->chg_cur.cdp_max = (mA > DEFAULT_CDP_CUR_MAX) ?
+			DEFAULT_CDP_CUR_MAX : mA;
+		break;
+	case ACA_TYPE:
+		if (usb_phy->chg_cur.aca_max == mA)
+			return;
+
+		usb_phy->chg_cur.aca_max = (mA > DEFAULT_ACA_CUR_MAX) ?
+			DEFAULT_ACA_CUR_MAX : mA;
+		break;
+	default:
+		return;
+	}
+
+	schedule_work(&usb_phy->chg_work);
+}
+EXPORT_SYMBOL_GPL(usb_phy_set_charger_current);
+
+/**
+ * usb_phy_get_charger_current - get the USB charger current
+ * @usb_phy - the USB phy to be used
+ * @min - the minimum current
+ * @max - the maximum current
+ *
+ * Usually we will notify the maximum current to power user, but for some
+ * special case, power user also need the minimum current value. Then the
+ * power user can issue this function to get the suitable current.
+ */
+void usb_phy_get_charger_current(struct usb_phy *usb_phy,
+				 unsigned int *min, unsigned int *max)
+{
+	switch (usb_phy->chg_type) {
+	case SDP_TYPE:
+		*min = usb_phy->chg_cur.sdp_min;
+		*max = usb_phy->chg_cur.sdp_max;
+		break;
+	case DCP_TYPE:
+		*min = usb_phy->chg_cur.dcp_min;
+		*max = usb_phy->chg_cur.dcp_max;
+		break;
+	case CDP_TYPE:
+		*min = usb_phy->chg_cur.cdp_min;
+		*max = usb_phy->chg_cur.cdp_max;
+		break;
+	case ACA_TYPE:
+		*min = usb_phy->chg_cur.aca_min;
+		*max = usb_phy->chg_cur.aca_max;
+		break;
+	default:
+		*min = 0;
+		*max = 0;
+		break;
+	}
+}
+EXPORT_SYMBOL_GPL(usb_phy_get_charger_current);
+
+/**
+ * usb_phy_set_charger_state - set the USB charger state
+ * @usb_phy - the USB phy to be used
+ * @state - the new state need to be set for charger
+ *
+ * The usb phy driver can issue this function when the usb phy driver
+ * detected the charger state has been changed, in this case the charger
+ * type should be get from ->charger_detect().
+ */
+void usb_phy_set_charger_state(struct usb_phy *usb_phy,
+			       enum usb_charger_state state)
+{
+	if (usb_phy->chg_state == state || !usb_phy->charger_detect)
+		return;
+
+	usb_phy->chg_state = state;
+	if (usb_phy->chg_state == USB_CHARGER_PRESENT)
+		usb_phy->chg_type = usb_phy->charger_detect(usb_phy);
+	else
+		usb_phy->chg_type = UNKNOWN_TYPE;
+
+	schedule_work(&usb_phy->chg_work);
+}
+EXPORT_SYMBOL_GPL(usb_phy_set_charger_state);
+
 static void devm_usb_phy_release(struct device *dev, void *res)
 {
 	struct usb_phy *phy = *(struct usb_phy **)res;
@@ -124,6 +351,44 @@ static int usb_add_extcon(struct usb_phy *x)
 					"register VBUS notifier failed\n");
 				return ret;
 			}
+		} else {
+			x->type_nb.notifier_call = usb_phy_get_charger_type;
+
+			ret = devm_extcon_register_notifier(x->dev, x->edev,
+							    EXTCON_CHG_USB_SDP,
+							    &x->type_nb);
+			if (ret) {
+				dev_err(x->dev,
+					"register extcon USB SDP failed.\n");
+				return ret;
+			}
+
+			ret = devm_extcon_register_notifier(x->dev, x->edev,
+							    EXTCON_CHG_USB_CDP,
+							    &x->type_nb);
+			if (ret) {
+				dev_err(x->dev,
+					"register extcon USB CDP failed.\n");
+				return ret;
+			}
+
+			ret = devm_extcon_register_notifier(x->dev, x->edev,
+							    EXTCON_CHG_USB_DCP,
+							    &x->type_nb);
+			if (ret) {
+				dev_err(x->dev,
+					"register extcon USB DCP failed.\n");
+				return ret;
+			}
+
+			ret = devm_extcon_register_notifier(x->dev, x->edev,
+							    EXTCON_CHG_USB_ACA,
+							    &x->type_nb);
+			if (ret) {
+				dev_err(x->dev,
+					"register extcon USB ACA failed.\n");
+				return ret;
+			}
 		}
 
 		if (x->id_nb.notifier_call) {
@@ -145,6 +410,13 @@ static int usb_add_extcon(struct usb_phy *x)
 		}
 	}
 
+	usb_phy_set_default_current(x);
+	INIT_WORK(&x->chg_work, usb_phy_notify_charger_work);
+	x->chg_type = UNKNOWN_TYPE;
+	x->chg_state = USB_CHARGER_DEFAULT;
+	if (x->type_nb.notifier_call)
+		__usb_phy_get_charger_type(x);
+
 	return 0;
 }
 
diff --git a/drivers/usb/renesas_usbhs/mod_gadget.c b/drivers/usb/renesas_usbhs/mod_gadget.c
index 2c8161bcf5b5..c068b673420b 100644
--- a/drivers/usb/renesas_usbhs/mod_gadget.c
+++ b/drivers/usb/renesas_usbhs/mod_gadget.c
@@ -764,7 +764,7 @@ static int usbhsg_ep_set_wedge(struct usb_ep *ep)
 	return __usbhsg_ep_set_halt_wedge(ep, 1, 1);
 }
 
-static struct usb_ep_ops usbhsg_ep_ops = {
+static const struct usb_ep_ops usbhsg_ep_ops = {
 	.enable		= usbhsg_ep_enable,
 	.disable	= usbhsg_ep_disable,
 
@@ -1082,7 +1082,6 @@ int usbhs_mod_gadget_probe(struct usbhs_priv *priv)
 		ret = -ENOMEM;
 		goto usbhs_mod_gadget_probe_err_gpriv;
 	}
-	spin_lock_init(&uep->lock);
 
 	gpriv->transceiver = usb_get_phy(USB_PHY_TYPE_UNDEFINED);
 	dev_info(dev, "%stransceiver found\n",
@@ -1132,6 +1131,7 @@ int usbhs_mod_gadget_probe(struct usbhs_priv *priv)
 		uep->ep.name		= uep->ep_name;
 		uep->ep.ops		= &usbhsg_ep_ops;
 		INIT_LIST_HEAD(&uep->ep.ep_list);
+		spin_lock_init(&uep->lock);
 
 		/* init DCP */
 		if (usbhsg_is_dcp(uep)) {
diff --git a/include/linux/hid.h b/include/linux/hid.h
index 5006f9b5d837..6519cdc4c7d3 100644
--- a/include/linux/hid.h
+++ b/include/linux/hid.h
@@ -362,6 +362,12 @@ struct hid_item {
 #define HID_GROUP_WACOM				0x0101
 #define HID_GROUP_LOGITECH_DJ_DEVICE		0x0102
 
+/*
+ * HID protocol status
+ */
+#define HID_REPORT_PROTOCOL	1
+#define HID_BOOT_PROTOCOL	0
+
 /*
  * This is the global environment of the parser. This information is
  * persistent for main-items. The global environment can be saved and
diff --git a/include/linux/usb/gadget.h b/include/linux/usb/gadget.h
index 1a4a4bacfae6..21468a722c4a 100644
--- a/include/linux/usb/gadget.h
+++ b/include/linux/usb/gadget.h
@@ -48,6 +48,7 @@ struct usb_ep;
  *     by adding a zero length packet as needed;
  * @short_not_ok: When reading data, makes short packets be
  *     treated as errors (queue stops advancing till cleanup).
+ * @dma_mapped: Indicates if request has been mapped to DMA (internal)
  * @complete: Function called when request completes, so this request and
  *	its buffer may be re-used.  The function will always be called with
  *	interrupts disabled, and it must not sleep.
@@ -103,6 +104,7 @@ struct usb_request {
 	unsigned		no_interrupt:1;
 	unsigned		zero:1;
 	unsigned		short_not_ok:1;
+	unsigned		dma_mapped:1;
 
 	void			(*complete)(struct usb_ep *ep,
 					struct usb_request *req);
diff --git a/include/linux/usb/phy.h b/include/linux/usb/phy.h
index 299245105610..de881b171ba9 100644
--- a/include/linux/usb/phy.h
+++ b/include/linux/usb/phy.h
@@ -12,6 +12,7 @@
 #include <linux/extcon.h>
 #include <linux/notifier.h>
 #include <linux/usb.h>
+#include <uapi/linux/usb/charger.h>
 
 enum usb_phy_interface {
 	USBPHY_INTERFACE_MODE_UNKNOWN,
@@ -72,6 +73,17 @@ struct usb_phy_io_ops {
 	int (*write)(struct usb_phy *x, u32 val, u32 reg);
 };
 
+struct usb_charger_current {
+	unsigned int sdp_min;
+	unsigned int sdp_max;
+	unsigned int dcp_min;
+	unsigned int dcp_max;
+	unsigned int cdp_min;
+	unsigned int cdp_max;
+	unsigned int aca_min;
+	unsigned int aca_max;
+};
+
 struct usb_phy {
 	struct device		*dev;
 	const char		*label;
@@ -91,6 +103,13 @@ struct usb_phy {
 	struct extcon_dev	*id_edev;
 	struct notifier_block	vbus_nb;
 	struct notifier_block	id_nb;
+	struct notifier_block	type_nb;
+
+	/* Support USB charger */
+	enum usb_charger_type	chg_type;
+	enum usb_charger_state	chg_state;
+	struct usb_charger_current	chg_cur;
+	struct work_struct		chg_work;
 
 	/* for notification of usb_phy_events */
 	struct atomic_notifier_head	notifier;
@@ -129,6 +148,12 @@ struct usb_phy {
 			enum usb_device_speed speed);
 	int	(*notify_disconnect)(struct usb_phy *x,
 			enum usb_device_speed speed);
+
+	/*
+	 * Charger detection method can be implemented if you need to
+	 * manually detect the charger type.
+	 */
+	enum usb_charger_type (*charger_detect)(struct usb_phy *x);
 };
 
 /**
@@ -219,6 +244,12 @@ extern void devm_usb_put_phy(struct device *dev, struct usb_phy *x);
 extern int usb_bind_phy(const char *dev_name, u8 index,
 				const char *phy_dev_name);
 extern void usb_phy_set_event(struct usb_phy *x, unsigned long event);
+extern void usb_phy_set_charger_current(struct usb_phy *usb_phy,
+					unsigned int mA);
+extern void usb_phy_get_charger_current(struct usb_phy *usb_phy,
+					unsigned int *min, unsigned int *max);
+extern void usb_phy_set_charger_state(struct usb_phy *usb_phy,
+				      enum usb_charger_state state);
 #else
 static inline struct usb_phy *usb_get_phy(enum usb_phy_type type)
 {
@@ -270,11 +301,29 @@ static inline int usb_bind_phy(const char *dev_name, u8 index,
 static inline void usb_phy_set_event(struct usb_phy *x, unsigned long event)
 {
 }
+
+static inline void usb_phy_set_charger_current(struct usb_phy *usb_phy,
+					       unsigned int mA)
+{
+}
+
+static inline void usb_phy_get_charger_current(struct usb_phy *usb_phy,
+					       unsigned int *min,
+					       unsigned int *max)
+{
+}
+
+static inline void usb_phy_set_charger_state(struct usb_phy *usb_phy,
+					     enum usb_charger_state state)
+{
+}
 #endif
 
 static inline int
 usb_phy_set_power(struct usb_phy *x, unsigned mA)
 {
+	usb_phy_set_charger_current(x, mA);
+
 	if (x && x->set_power)
 		return x->set_power(x, mA);
 	return 0;
diff --git a/include/uapi/linux/usb/charger.h b/include/uapi/linux/usb/charger.h
new file mode 100644
index 000000000000..5f72af35b3ed
--- /dev/null
+++ b/include/uapi/linux/usb/charger.h
@@ -0,0 +1,31 @@
+/*
+ * This file defines the USB charger type and state that are needed for
+ * USB device APIs.
+ */
+
+#ifndef _UAPI__LINUX_USB_CHARGER_H
+#define _UAPI__LINUX_USB_CHARGER_H
+
+/*
+ * USB charger type:
+ * SDP (Standard Downstream Port)
+ * DCP (Dedicated Charging Port)
+ * CDP (Charging Downstream Port)
+ * ACA (Accessory Charger Adapters)
+ */
+enum usb_charger_type {
+	UNKNOWN_TYPE,
+	SDP_TYPE,
+	DCP_TYPE,
+	CDP_TYPE,
+	ACA_TYPE,
+};
+
+/* USB charger state */
+enum usb_charger_state {
+	USB_CHARGER_DEFAULT,
+	USB_CHARGER_PRESENT,
+	USB_CHARGER_ABSENT,
+};
+
+#endif /* _UAPI__LINUX_USB_CHARGER_H */