Merge tag 'usb-5.6-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb

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

  With the advent of USB4, "Thunderbolt" has really become USB4, so the
  renaming of the Kconfig option and starting to share subsystem code
  has begun, hence both subsystems coming in through the same tree here.

  PHY driver updates also touched USB drivers, so that is coming in
  through here as well.

  Major stuff included in here are:
   - USB 4 initial support added (i.e. Thunderbolt)
   - musb driver updates
   - USB gadget driver updates
   - PHY driver updates
   - USB PHY driver updates
   - lots of USB serial stuff fixed up
   - USB typec updates
   - USB-IP fixes
   - lots of other smaller USB driver updates

  All of these have been in linux-next for a while now (the usb-serial
  tree is already tested in linux-next on its own before merged into
  here), with no reported issues"

[ Removed an incorrect compile test enablement for PHY_EXYNOS5250_SATA
  that causes configuration warnings    - Linus ]

* tag 'usb-5.6-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb: (207 commits)
  Doc: ABI: add usb charger uevent
  usb: phy: show USB charger type for user
  usb: cdns3: fix spelling mistake and rework grammar in text
  usb: phy: phy-gpio-vbus-usb: Convert to GPIO descriptors
  USB: serial: cyberjack: fix spelling mistake "To" -> "Too"
  USB: serial: ir-usb: simplify endpoint check
  USB: serial: ir-usb: make set_termios synchronous
  USB: serial: ir-usb: fix IrLAP framing
  USB: serial: ir-usb: fix link-speed handling
  USB: serial: ir-usb: add missing endpoint sanity check
  usb: typec: fusb302: fix "op-sink-microwatt" default that was in mW
  usb: typec: wcove: fix "op-sink-microwatt" default that was in mW
  usb: dwc3: pci: add ID for the Intel Comet Lake -V variant
  usb: typec: tcpci: mask event interrupts when remove driver
  usb: host: xhci-tegra: set MODULE_FIRMWARE for tegra186
  usb: chipidea: add inline for ci_hdrc_host_driver_init if host is not defined
  usb: chipidea: handle single role for usb role class
  usb: musb: fix spelling mistake: "periperal" -> "peripheral"
  phy: ti: j721e-wiz: Fix build error without CONFIG_OF_ADDRESS
  USB: usbfs: Always unlink URBs in reverse order
  ...

97 files changed, 3685 insertions, 1363 deletions

diff --git a/drivers/usb/cdns3/Kconfig b/drivers/usb/cdns3/Kconfig
index 2a1e89d12ed9..84716d216ae5 100644
--- a/drivers/usb/cdns3/Kconfig
+++ b/drivers/usb/cdns3/Kconfig
@@ -53,4 +53,14 @@ config USB_CDNS3_TI
 
 	  e.g. J721e.
 
+config USB_CDNS3_IMX
+	tristate "Cadence USB3 support on NXP i.MX platforms"
+	depends on ARCH_MXC || COMPILE_TEST
+	default USB_CDNS3
+	help
+	  Say 'Y' or 'M' here if you are building for NXP i.MX
+	  platforms that contain Cadence USB3 controller core.
+
+	  For example, imx8qm and imx8qxp.
+
 endif
diff --git a/drivers/usb/cdns3/Makefile b/drivers/usb/cdns3/Makefile
index 948e6b88d1a9..d47e341a6f39 100644
--- a/drivers/usb/cdns3/Makefile
+++ b/drivers/usb/cdns3/Makefile
@@ -15,3 +15,4 @@ cdns3-$(CONFIG_USB_CDNS3_HOST)		+= host.o
 
 obj-$(CONFIG_USB_CDNS3_PCI_WRAP)	+= cdns3-pci-wrap.o
 obj-$(CONFIG_USB_CDNS3_TI)		+= cdns3-ti.o
+obj-$(CONFIG_USB_CDNS3_IMX)		+= cdns3-imx.o
diff --git a/drivers/usb/cdns3/cdns3-imx.c b/drivers/usb/cdns3/cdns3-imx.c
new file mode 100644
index 000000000000..aba988e71958
--- /dev/null
+++ b/drivers/usb/cdns3/cdns3-imx.c
@@ -0,0 +1,216 @@
+// SPDX-License-Identifier: GPL-2.0
+/**
+ * cdns3-imx.c - NXP i.MX specific Glue layer for Cadence USB Controller
+ *
+ * Copyright (C) 2019 NXP
+ */
+
+#include <linux/bits.h>
+#include <linux/clk.h>
+#include <linux/module.h>
+#include <linux/kernel.h>
+#include <linux/interrupt.h>
+#include <linux/platform_device.h>
+#include <linux/dma-mapping.h>
+#include <linux/io.h>
+#include <linux/of_platform.h>
+#include <linux/iopoll.h>
+
+#define USB3_CORE_CTRL1    0x00
+#define USB3_CORE_CTRL2    0x04
+#define USB3_INT_REG       0x08
+#define USB3_CORE_STATUS   0x0c
+#define XHCI_DEBUG_LINK_ST 0x10
+#define XHCI_DEBUG_BUS     0x14
+#define USB3_SSPHY_CTRL1   0x40
+#define USB3_SSPHY_CTRL2   0x44
+#define USB3_SSPHY_STATUS  0x4c
+#define USB2_PHY_CTRL1     0x50
+#define USB2_PHY_CTRL2     0x54
+#define USB2_PHY_STATUS    0x5c
+
+/* Register bits definition */
+
+/* USB3_CORE_CTRL1 */
+#define SW_RESET_MASK	(0x3f << 26)
+#define PWR_SW_RESET	BIT(31)
+#define APB_SW_RESET	BIT(30)
+#define AXI_SW_RESET	BIT(29)
+#define RW_SW_RESET	BIT(28)
+#define PHY_SW_RESET	BIT(27)
+#define PHYAHB_SW_RESET	BIT(26)
+#define ALL_SW_RESET	(PWR_SW_RESET | APB_SW_RESET | AXI_SW_RESET | \
+		RW_SW_RESET | PHY_SW_RESET | PHYAHB_SW_RESET)
+#define OC_DISABLE	BIT(9)
+#define MDCTRL_CLK_SEL	BIT(7)
+#define MODE_STRAP_MASK	(0x7)
+#define DEV_MODE	(1 << 2)
+#define HOST_MODE	(1 << 1)
+#define OTG_MODE	(1 << 0)
+
+/* USB3_INT_REG */
+#define CLK_125_REQ	BIT(29)
+#define LPM_CLK_REQ	BIT(28)
+#define DEVU3_WAEKUP_EN	BIT(14)
+#define OTG_WAKEUP_EN	BIT(12)
+#define DEV_INT_EN (3 << 8) /* DEV INT b9:8 */
+#define HOST_INT1_EN (1 << 0) /* HOST INT b7:0 */
+
+/* USB3_CORE_STATUS */
+#define MDCTRL_CLK_STATUS	BIT(15)
+#define DEV_POWER_ON_READY	BIT(13)
+#define HOST_POWER_ON_READY	BIT(12)
+
+/* USB3_SSPHY_STATUS */
+#define CLK_VALID_MASK		(0x3f << 26)
+#define CLK_VALID_COMPARE_BITS	(0xf << 28)
+#define PHY_REFCLK_REQ		(1 << 0)
+
+struct cdns_imx {
+	struct device *dev;
+	void __iomem *noncore;
+	struct clk_bulk_data *clks;
+	int num_clks;
+};
+
+static inline u32 cdns_imx_readl(struct cdns_imx *data, u32 offset)
+{
+	return readl(data->noncore + offset);
+}
+
+static inline void cdns_imx_writel(struct cdns_imx *data, u32 offset, u32 value)
+{
+	writel(value, data->noncore + offset);
+}
+
+static const struct clk_bulk_data imx_cdns3_core_clks[] = {
+	{ .id = "usb3_lpm_clk" },
+	{ .id = "usb3_bus_clk" },
+	{ .id = "usb3_aclk" },
+	{ .id = "usb3_ipg_clk" },
+	{ .id = "usb3_core_pclk" },
+};
+
+static int cdns_imx_noncore_init(struct cdns_imx *data)
+{
+	u32 value;
+	int ret;
+	struct device *dev = data->dev;
+
+	cdns_imx_writel(data, USB3_SSPHY_STATUS, CLK_VALID_MASK);
+	udelay(1);
+	ret = readl_poll_timeout(data->noncore + USB3_SSPHY_STATUS, value,
+		(value & CLK_VALID_COMPARE_BITS) == CLK_VALID_COMPARE_BITS,
+		10, 100000);
+	if (ret) {
+		dev_err(dev, "wait clkvld timeout\n");
+		return ret;
+	}
+
+	value = cdns_imx_readl(data, USB3_CORE_CTRL1);
+	value |= ALL_SW_RESET;
+	cdns_imx_writel(data, USB3_CORE_CTRL1, value);
+	udelay(1);
+
+	value = cdns_imx_readl(data, USB3_CORE_CTRL1);
+	value = (value & ~MODE_STRAP_MASK) | OTG_MODE | OC_DISABLE;
+	cdns_imx_writel(data, USB3_CORE_CTRL1, value);
+
+	value = cdns_imx_readl(data, USB3_INT_REG);
+	value |= HOST_INT1_EN | DEV_INT_EN;
+	cdns_imx_writel(data, USB3_INT_REG, value);
+
+	value = cdns_imx_readl(data, USB3_CORE_CTRL1);
+	value &= ~ALL_SW_RESET;
+	cdns_imx_writel(data, USB3_CORE_CTRL1, value);
+	return ret;
+}
+
+static int cdns_imx_probe(struct platform_device *pdev)
+{
+	struct device *dev = &pdev->dev;
+	struct device_node *node = dev->of_node;
+	struct cdns_imx *data;
+	int ret;
+
+	if (!node)
+		return -ENODEV;
+
+	data = devm_kzalloc(dev, sizeof(*data), GFP_KERNEL);
+	if (!data)
+		return -ENOMEM;
+
+	platform_set_drvdata(pdev, data);
+	data->dev = dev;
+	data->noncore = devm_platform_ioremap_resource(pdev, 0);
+	if (IS_ERR(data->noncore)) {
+		dev_err(dev, "can't map IOMEM resource\n");
+		return PTR_ERR(data->noncore);
+	}
+
+	data->num_clks = ARRAY_SIZE(imx_cdns3_core_clks);
+	data->clks = (struct clk_bulk_data *)imx_cdns3_core_clks;
+	ret = devm_clk_bulk_get(dev, data->num_clks, data->clks);
+	if (ret)
+		return ret;
+
+	ret = clk_bulk_prepare_enable(data->num_clks, data->clks);
+	if (ret)
+		return ret;
+
+	ret = cdns_imx_noncore_init(data);
+	if (ret)
+		goto err;
+
+	ret = of_platform_populate(node, NULL, NULL, dev);
+	if (ret) {
+		dev_err(dev, "failed to create children: %d\n", ret);
+		goto err;
+	}
+
+	return ret;
+
+err:
+	clk_bulk_disable_unprepare(data->num_clks, data->clks);
+	return ret;
+}
+
+static int cdns_imx_remove_core(struct device *dev, void *data)
+{
+	struct platform_device *pdev = to_platform_device(dev);
+
+	platform_device_unregister(pdev);
+
+	return 0;
+}
+
+static int cdns_imx_remove(struct platform_device *pdev)
+{
+	struct device *dev = &pdev->dev;
+
+	device_for_each_child(dev, NULL, cdns_imx_remove_core);
+	platform_set_drvdata(pdev, NULL);
+
+	return 0;
+}
+
+static const struct of_device_id cdns_imx_of_match[] = {
+	{ .compatible = "fsl,imx8qm-usb3", },
+	{},
+};
+MODULE_DEVICE_TABLE(of, cdns_imx_of_match);
+
+static struct platform_driver cdns_imx_driver = {
+	.probe		= cdns_imx_probe,
+	.remove		= cdns_imx_remove,
+	.driver		= {
+		.name	= "cdns3-imx",
+		.of_match_table	= cdns_imx_of_match,
+	},
+};
+module_platform_driver(cdns_imx_driver);
+
+MODULE_ALIAS("platform:cdns3-imx");
+MODULE_AUTHOR("Peter Chen <peter.chen@nxp.com>");
+MODULE_LICENSE("GPL v2");
+MODULE_DESCRIPTION("Cadence USB3 i.MX Glue Layer");
diff --git a/drivers/usb/cdns3/debug.h b/drivers/usb/cdns3/debug.h
index 2c9afbfe988b..a5c6a29e1340 100644
--- a/drivers/usb/cdns3/debug.h
+++ b/drivers/usb/cdns3/debug.h
@@ -140,7 +140,7 @@ static inline char *cdns3_dbg_ring(struct cdns3_endpoint *priv_ep,
 		trb_per_sector = TRBS_PER_SEGMENT;
 
 	if (trb_per_sector > TRBS_PER_SEGMENT) {
-		sprintf(str + ret, "\t\tTo big transfer ring %d\n",
+		sprintf(str + ret, "\t\tTransfer ring %d too big\n",
 			trb_per_sector);
 		return str;
 	}
diff --git a/drivers/usb/cdns3/gadget.c b/drivers/usb/cdns3/gadget.c
index 02f6ca2cb1ba..736b0c6e27fe 100644
--- a/drivers/usb/cdns3/gadget.c
+++ b/drivers/usb/cdns3/gadget.c
@@ -71,6 +71,23 @@ static int __cdns3_gadget_ep_queue(struct usb_ep *ep,
 				   struct usb_request *request,
 				   gfp_t gfp_flags);
 
+static int cdns3_ep_run_transfer(struct cdns3_endpoint *priv_ep,
+				 struct usb_request *request);
+
+static int cdns3_ep_run_stream_transfer(struct cdns3_endpoint *priv_ep,
+					struct usb_request *request);
+
+/**
+ * cdns3_clear_register_bit - clear bit in given register.
+ * @ptr: address of device controller register to be read and changed
+ * @mask: bits requested to clar
+ */
+void cdns3_clear_register_bit(void __iomem *ptr, u32 mask)
+{
+	mask = readl(ptr) & ~mask;
+	writel(mask, ptr);
+}
+
 /**
  * cdns3_set_register_bit - set bit in given register.
  * @ptr: address of device controller register to be read and changed
@@ -150,6 +167,21 @@ void cdns3_select_ep(struct cdns3_device *priv_dev, u32 ep)
 	writel(ep, &priv_dev->regs->ep_sel);
 }
 
+/**
+ * cdns3_get_tdl - gets current tdl for selected endpoint.
+ * @priv_dev:  extended gadget object
+ *
+ * Before calling this function the appropriate endpoint must
+ * be selected by means of cdns3_select_ep function.
+ */
+static int cdns3_get_tdl(struct cdns3_device *priv_dev)
+{
+	if (priv_dev->dev_ver < DEV_VER_V3)
+		return EP_CMD_TDL_GET(readl(&priv_dev->regs->ep_cmd));
+	else
+		return readl(&priv_dev->regs->ep_tdl);
+}
+
 dma_addr_t cdns3_trb_virt_to_dma(struct cdns3_endpoint *priv_ep,
 				 struct cdns3_trb *trb)
 {
@@ -166,7 +198,22 @@ int cdns3_ring_size(struct cdns3_endpoint *priv_ep)
 	case USB_ENDPOINT_XFER_CONT