Add the rt linux 4.1.3-rt3 as base
[kvmfornfv.git] / kernel / drivers / usb / phy / phy-mxs-usb.c
diff --git a/kernel/drivers/usb/phy/phy-mxs-usb.c b/kernel/drivers/usb/phy/phy-mxs-usb.c
new file mode 100644 (file)
index 0000000..8f7cb06
--- /dev/null
@@ -0,0 +1,589 @@
+/*
+ * Copyright 2012-2014 Freescale Semiconductor, Inc.
+ * Copyright (C) 2012 Marek Vasut <marex@denx.de>
+ * on behalf of DENX Software Engineering GmbH
+ *
+ * The code contained herein is licensed under the GNU General Public
+ * License. You may obtain a copy of the GNU General Public License
+ * Version 2 or later at the following locations:
+ *
+ * http://www.opensource.org/licenses/gpl-license.html
+ * http://www.gnu.org/copyleft/gpl.html
+ */
+
+#include <linux/module.h>
+#include <linux/kernel.h>
+#include <linux/platform_device.h>
+#include <linux/clk.h>
+#include <linux/usb/otg.h>
+#include <linux/stmp_device.h>
+#include <linux/delay.h>
+#include <linux/err.h>
+#include <linux/io.h>
+#include <linux/of_device.h>
+#include <linux/regmap.h>
+#include <linux/mfd/syscon.h>
+
+#define DRIVER_NAME "mxs_phy"
+
+#define HW_USBPHY_PWD                          0x00
+#define HW_USBPHY_CTRL                         0x30
+#define HW_USBPHY_CTRL_SET                     0x34
+#define HW_USBPHY_CTRL_CLR                     0x38
+
+#define HW_USBPHY_DEBUG_SET                    0x54
+#define HW_USBPHY_DEBUG_CLR                    0x58
+
+#define HW_USBPHY_IP                           0x90
+#define HW_USBPHY_IP_SET                       0x94
+#define HW_USBPHY_IP_CLR                       0x98
+
+#define BM_USBPHY_CTRL_SFTRST                  BIT(31)
+#define BM_USBPHY_CTRL_CLKGATE                 BIT(30)
+#define BM_USBPHY_CTRL_OTG_ID_VALUE            BIT(27)
+#define BM_USBPHY_CTRL_ENAUTOSET_USBCLKS       BIT(26)
+#define BM_USBPHY_CTRL_ENAUTOCLR_USBCLKGATE    BIT(25)
+#define BM_USBPHY_CTRL_ENVBUSCHG_WKUP          BIT(23)
+#define BM_USBPHY_CTRL_ENIDCHG_WKUP            BIT(22)
+#define BM_USBPHY_CTRL_ENDPDMCHG_WKUP          BIT(21)
+#define BM_USBPHY_CTRL_ENAUTOCLR_PHY_PWD       BIT(20)
+#define BM_USBPHY_CTRL_ENAUTOCLR_CLKGATE       BIT(19)
+#define BM_USBPHY_CTRL_ENAUTO_PWRON_PLL                BIT(18)
+#define BM_USBPHY_CTRL_ENUTMILEVEL3            BIT(15)
+#define BM_USBPHY_CTRL_ENUTMILEVEL2            BIT(14)
+#define BM_USBPHY_CTRL_ENHOSTDISCONDETECT      BIT(1)
+
+#define BM_USBPHY_IP_FIX                       (BIT(17) | BIT(18))
+
+#define BM_USBPHY_DEBUG_CLKGATE                        BIT(30)
+
+/* Anatop Registers */
+#define ANADIG_ANA_MISC0                       0x150
+#define ANADIG_ANA_MISC0_SET                   0x154
+#define ANADIG_ANA_MISC0_CLR                   0x158
+
+#define ANADIG_USB1_VBUS_DET_STAT              0x1c0
+#define ANADIG_USB2_VBUS_DET_STAT              0x220
+
+#define ANADIG_USB1_LOOPBACK_SET               0x1e4
+#define ANADIG_USB1_LOOPBACK_CLR               0x1e8
+#define ANADIG_USB2_LOOPBACK_SET               0x244
+#define ANADIG_USB2_LOOPBACK_CLR               0x248
+
+#define ANADIG_USB1_MISC                       0x1f0
+#define ANADIG_USB2_MISC                       0x250
+
+#define BM_ANADIG_ANA_MISC0_STOP_MODE_CONFIG   BIT(12)
+#define BM_ANADIG_ANA_MISC0_STOP_MODE_CONFIG_SL BIT(11)
+
+#define BM_ANADIG_USB1_VBUS_DET_STAT_VBUS_VALID        BIT(3)
+#define BM_ANADIG_USB2_VBUS_DET_STAT_VBUS_VALID        BIT(3)
+
+#define BM_ANADIG_USB1_LOOPBACK_UTMI_DIG_TST1  BIT(2)
+#define BM_ANADIG_USB1_LOOPBACK_TSTI_TX_EN     BIT(5)
+#define BM_ANADIG_USB2_LOOPBACK_UTMI_DIG_TST1  BIT(2)
+#define BM_ANADIG_USB2_LOOPBACK_TSTI_TX_EN     BIT(5)
+
+#define BM_ANADIG_USB1_MISC_RX_VPIN_FS         BIT(29)
+#define BM_ANADIG_USB1_MISC_RX_VMIN_FS         BIT(28)
+#define BM_ANADIG_USB2_MISC_RX_VPIN_FS         BIT(29)
+#define BM_ANADIG_USB2_MISC_RX_VMIN_FS         BIT(28)
+
+#define to_mxs_phy(p) container_of((p), struct mxs_phy, phy)
+
+/* Do disconnection between PHY and controller without vbus */
+#define MXS_PHY_DISCONNECT_LINE_WITHOUT_VBUS   BIT(0)
+
+/*
+ * The PHY will be in messy if there is a wakeup after putting
+ * bus to suspend (set portsc.suspendM) but before setting PHY to low
+ * power mode (set portsc.phcd).
+ */
+#define MXS_PHY_ABNORMAL_IN_SUSPEND            BIT(1)
+
+/*
+ * The SOF sends too fast after resuming, it will cause disconnection
+ * between host and high speed device.
+ */
+#define MXS_PHY_SENDING_SOF_TOO_FAST           BIT(2)
+
+/*
+ * IC has bug fixes logic, they include
+ * MXS_PHY_ABNORMAL_IN_SUSPEND and MXS_PHY_SENDING_SOF_TOO_FAST
+ * which are described at above flags, the RTL will handle it
+ * according to different versions.
+ */
+#define MXS_PHY_NEED_IP_FIX                    BIT(3)
+
+struct mxs_phy_data {
+       unsigned int flags;
+};
+
+static const struct mxs_phy_data imx23_phy_data = {
+       .flags = MXS_PHY_ABNORMAL_IN_SUSPEND | MXS_PHY_SENDING_SOF_TOO_FAST,
+};
+
+static const struct mxs_phy_data imx6q_phy_data = {
+       .flags = MXS_PHY_SENDING_SOF_TOO_FAST |
+               MXS_PHY_DISCONNECT_LINE_WITHOUT_VBUS |
+               MXS_PHY_NEED_IP_FIX,
+};
+
+static const struct mxs_phy_data imx6sl_phy_data = {
+       .flags = MXS_PHY_DISCONNECT_LINE_WITHOUT_VBUS |
+               MXS_PHY_NEED_IP_FIX,
+};
+
+static const struct mxs_phy_data vf610_phy_data = {
+       .flags = MXS_PHY_DISCONNECT_LINE_WITHOUT_VBUS |
+               MXS_PHY_NEED_IP_FIX,
+};
+
+static const struct mxs_phy_data imx6sx_phy_data = {
+       .flags = MXS_PHY_DISCONNECT_LINE_WITHOUT_VBUS,
+};
+
+static const struct of_device_id mxs_phy_dt_ids[] = {
+       { .compatible = "fsl,imx6sx-usbphy", .data = &imx6sx_phy_data, },
+       { .compatible = "fsl,imx6sl-usbphy", .data = &imx6sl_phy_data, },
+       { .compatible = "fsl,imx6q-usbphy", .data = &imx6q_phy_data, },
+       { .compatible = "fsl,imx23-usbphy", .data = &imx23_phy_data, },
+       { .compatible = "fsl,vf610-usbphy", .data = &vf610_phy_data, },
+       { /* sentinel */ }
+};
+MODULE_DEVICE_TABLE(of, mxs_phy_dt_ids);
+
+struct mxs_phy {
+       struct usb_phy phy;
+       struct clk *clk;
+       const struct mxs_phy_data *data;
+       struct regmap *regmap_anatop;
+       int port_id;
+};
+
+static inline bool is_imx6q_phy(struct mxs_phy *mxs_phy)
+{
+       return mxs_phy->data == &imx6q_phy_data;
+}
+
+static inline bool is_imx6sl_phy(struct mxs_phy *mxs_phy)
+{
+       return mxs_phy->data == &imx6sl_phy_data;
+}
+
+/*
+ * PHY needs some 32K cycles to switch from 32K clock to
+ * bus (such as AHB/AXI, etc) clock.
+ */
+static void mxs_phy_clock_switch_delay(void)
+{
+       usleep_range(300, 400);
+}
+
+static int mxs_phy_hw_init(struct mxs_phy *mxs_phy)
+{
+       int ret;
+       void __iomem *base = mxs_phy->phy.io_priv;
+
+       ret = stmp_reset_block(base + HW_USBPHY_CTRL);
+       if (ret)
+               return ret;
+
+       /* Power up the PHY */
+       writel(0, base + HW_USBPHY_PWD);
+
+       /*
+        * USB PHY Ctrl Setting
+        * - Auto clock/power on
+        * - Enable full/low speed support
+        */
+       writel(BM_USBPHY_CTRL_ENAUTOSET_USBCLKS |
+               BM_USBPHY_CTRL_ENAUTOCLR_USBCLKGATE |
+               BM_USBPHY_CTRL_ENAUTOCLR_PHY_PWD |
+               BM_USBPHY_CTRL_ENAUTOCLR_CLKGATE |
+               BM_USBPHY_CTRL_ENAUTO_PWRON_PLL |
+               BM_USBPHY_CTRL_ENUTMILEVEL2 |
+               BM_USBPHY_CTRL_ENUTMILEVEL3,
+              base + HW_USBPHY_CTRL_SET);
+
+       if (mxs_phy->data->flags & MXS_PHY_NEED_IP_FIX)
+               writel(BM_USBPHY_IP_FIX, base + HW_USBPHY_IP_SET);
+
+       return 0;
+}
+
+/* Return true if the vbus is there */
+static bool mxs_phy_get_vbus_status(struct mxs_phy *mxs_phy)
+{
+       unsigned int vbus_value;
+
+       if (mxs_phy->port_id == 0)
+               regmap_read(mxs_phy->regmap_anatop,
+                       ANADIG_USB1_VBUS_DET_STAT,
+                       &vbus_value);
+       else if (mxs_phy->port_id == 1)
+               regmap_read(mxs_phy->regmap_anatop,
+                       ANADIG_USB2_VBUS_DET_STAT,
+                       &vbus_value);
+
+       if (vbus_value & BM_ANADIG_USB1_VBUS_DET_STAT_VBUS_VALID)
+               return true;
+       else
+               return false;
+}
+
+static void __mxs_phy_disconnect_line(struct mxs_phy *mxs_phy, bool disconnect)
+{
+       void __iomem *base = mxs_phy->phy.io_priv;
+       u32 reg;
+
+       if (disconnect)
+               writel_relaxed(BM_USBPHY_DEBUG_CLKGATE,
+                       base + HW_USBPHY_DEBUG_CLR);
+
+       if (mxs_phy->port_id == 0) {
+               reg = disconnect ? ANADIG_USB1_LOOPBACK_SET
+                       : ANADIG_USB1_LOOPBACK_CLR;
+               regmap_write(mxs_phy->regmap_anatop, reg,
+                       BM_ANADIG_USB1_LOOPBACK_UTMI_DIG_TST1 |
+                       BM_ANADIG_USB1_LOOPBACK_TSTI_TX_EN);
+       } else if (mxs_phy->port_id == 1) {
+               reg = disconnect ? ANADIG_USB2_LOOPBACK_SET
+                       : ANADIG_USB2_LOOPBACK_CLR;
+               regmap_write(mxs_phy->regmap_anatop, reg,
+                       BM_ANADIG_USB2_LOOPBACK_UTMI_DIG_TST1 |
+                       BM_ANADIG_USB2_LOOPBACK_TSTI_TX_EN);
+       }
+
+       if (!disconnect)
+               writel_relaxed(BM_USBPHY_DEBUG_CLKGATE,
+                       base + HW_USBPHY_DEBUG_SET);
+
+       /* Delay some time, and let Linestate be SE0 for controller */
+       if (disconnect)
+               usleep_range(500, 1000);
+}
+
+static bool mxs_phy_is_otg_host(struct mxs_phy *mxs_phy)
+{
+       void __iomem *base = mxs_phy->phy.io_priv;
+       u32 phyctrl = readl(base + HW_USBPHY_CTRL);
+
+       if (IS_ENABLED(CONFIG_USB_OTG) &&
+                       !(phyctrl & BM_USBPHY_CTRL_OTG_ID_VALUE))
+               return true;
+
+       return false;
+}
+
+static void mxs_phy_disconnect_line(struct mxs_phy *mxs_phy, bool on)
+{
+       bool vbus_is_on = false;
+
+       /* If the SoCs don't need to disconnect line without vbus, quit */
+       if (!(mxs_phy->data->flags & MXS_PHY_DISCONNECT_LINE_WITHOUT_VBUS))
+               return;
+
+       /* If the SoCs don't have anatop, quit */
+       if (!mxs_phy->regmap_anatop)
+               return;
+
+       vbus_is_on = mxs_phy_get_vbus_status(mxs_phy);
+
+       if (on && !vbus_is_on && !mxs_phy_is_otg_host(mxs_phy))
+               __mxs_phy_disconnect_line(mxs_phy, true);
+       else
+               __mxs_phy_disconnect_line(mxs_phy, false);
+
+}
+
+static int mxs_phy_init(struct usb_phy *phy)
+{
+       int ret;
+       struct mxs_phy *mxs_phy = to_mxs_phy(phy);
+
+       mxs_phy_clock_switch_delay();
+       ret = clk_prepare_enable(mxs_phy->clk);
+       if (ret)
+               return ret;
+
+       return mxs_phy_hw_init(mxs_phy);
+}
+
+static void mxs_phy_shutdown(struct usb_phy *phy)
+{
+       struct mxs_phy *mxs_phy = to_mxs_phy(phy);
+       u32 value = BM_USBPHY_CTRL_ENVBUSCHG_WKUP |
+                       BM_USBPHY_CTRL_ENDPDMCHG_WKUP |
+                       BM_USBPHY_CTRL_ENIDCHG_WKUP |
+                       BM_USBPHY_CTRL_ENAUTOSET_USBCLKS |
+                       BM_USBPHY_CTRL_ENAUTOCLR_USBCLKGATE |
+                       BM_USBPHY_CTRL_ENAUTOCLR_PHY_PWD |
+                       BM_USBPHY_CTRL_ENAUTOCLR_CLKGATE |
+                       BM_USBPHY_CTRL_ENAUTO_PWRON_PLL;
+
+       writel(value, phy->io_priv + HW_USBPHY_CTRL_CLR);
+       writel(0xffffffff, phy->io_priv + HW_USBPHY_PWD);
+
+       writel(BM_USBPHY_CTRL_CLKGATE,
+              phy->io_priv + HW_USBPHY_CTRL_SET);
+
+       clk_disable_unprepare(mxs_phy->clk);
+}
+
+static bool mxs_phy_is_low_speed_connection(struct mxs_phy *mxs_phy)
+{
+       unsigned int line_state;
+       /* bit definition is the same for all controllers */
+       unsigned int dp_bit = BM_ANADIG_USB1_MISC_RX_VPIN_FS,
+                    dm_bit = BM_ANADIG_USB1_MISC_RX_VMIN_FS;
+       unsigned int reg = ANADIG_USB1_MISC;
+
+       /* If the SoCs don't have anatop, quit */
+       if (!mxs_phy->regmap_anatop)
+               return false;
+
+       if (mxs_phy->port_id == 0)
+               reg = ANADIG_USB1_MISC;
+       else if (mxs_phy->port_id == 1)
+               reg = ANADIG_USB2_MISC;
+
+       regmap_read(mxs_phy->regmap_anatop, reg, &line_state);
+
+       if ((line_state & (dp_bit | dm_bit)) ==  dm_bit)
+               return true;
+       else
+               return false;
+}
+
+static int mxs_phy_suspend(struct usb_phy *x, int suspend)
+{
+       int ret;
+       struct mxs_phy *mxs_phy = to_mxs_phy(x);
+       bool low_speed_connection, vbus_is_on;
+
+       low_speed_connection = mxs_phy_is_low_speed_connection(mxs_phy);
+       vbus_is_on = mxs_phy_get_vbus_status(mxs_phy);
+
+       if (suspend) {
+               /*
+                * FIXME: Do not power down RXPWD1PT1 bit for low speed
+                * connect. The low speed connection will have problem at
+                * very rare cases during usb suspend and resume process.
+                */
+               if (low_speed_connection & vbus_is_on) {
+                       /*
+                        * If value to be set as pwd value is not 0xffffffff,
+                        * several 32Khz cycles are needed.
+                        */
+                       mxs_phy_clock_switch_delay();
+                       writel(0xffbfffff, x->io_priv + HW_USBPHY_PWD);
+               } else {
+                       writel(0xffffffff, x->io_priv + HW_USBPHY_PWD);
+               }
+               writel(BM_USBPHY_CTRL_CLKGATE,
+                      x->io_priv + HW_USBPHY_CTRL_SET);
+               clk_disable_unprepare(mxs_phy->clk);
+       } else {
+               mxs_phy_clock_switch_delay();
+               ret = clk_prepare_enable(mxs_phy->clk);
+               if (ret)
+                       return ret;
+               writel(BM_USBPHY_CTRL_CLKGATE,
+                      x->io_priv + HW_USBPHY_CTRL_CLR);
+               writel(0, x->io_priv + HW_USBPHY_PWD);
+       }
+
+       return 0;
+}
+
+static int mxs_phy_set_wakeup(struct usb_phy *x, bool enabled)
+{
+       struct mxs_phy *mxs_phy = to_mxs_phy(x);
+       u32 value = BM_USBPHY_CTRL_ENVBUSCHG_WKUP |
+                       BM_USBPHY_CTRL_ENDPDMCHG_WKUP |
+                               BM_USBPHY_CTRL_ENIDCHG_WKUP;
+       if (enabled) {
+               mxs_phy_disconnect_line(mxs_phy, true);
+               writel_relaxed(value, x->io_priv + HW_USBPHY_CTRL_SET);
+       } else {
+               writel_relaxed(value, x->io_priv + HW_USBPHY_CTRL_CLR);
+               mxs_phy_disconnect_line(mxs_phy, false);
+       }
+
+       return 0;
+}
+
+static int mxs_phy_on_connect(struct usb_phy *phy,
+               enum usb_device_speed speed)
+{
+       dev_dbg(phy->dev, "%s device has connected\n",
+               (speed == USB_SPEED_HIGH) ? "HS" : "FS/LS");
+
+       if (speed == USB_SPEED_HIGH)
+               writel(BM_USBPHY_CTRL_ENHOSTDISCONDETECT,
+                      phy->io_priv + HW_USBPHY_CTRL_SET);
+
+       return 0;
+}
+
+static int mxs_phy_on_disconnect(struct usb_phy *phy,
+               enum usb_device_speed speed)
+{
+       dev_dbg(phy->dev, "%s device has disconnected\n",
+               (speed == USB_SPEED_HIGH) ? "HS" : "FS/LS");
+
+       /* Sometimes, the speed is not high speed when the error occurs */
+       if (readl(phy->io_priv + HW_USBPHY_CTRL) &
+                       BM_USBPHY_CTRL_ENHOSTDISCONDETECT)
+               writel(BM_USBPHY_CTRL_ENHOSTDISCONDETECT,
+                      phy->io_priv + HW_USBPHY_CTRL_CLR);
+
+       return 0;
+}
+
+static int mxs_phy_probe(struct platform_device *pdev)
+{
+       struct resource *res;
+       void __iomem *base;
+       struct clk *clk;
+       struct mxs_phy *mxs_phy;
+       int ret;
+       const struct of_device_id *of_id =
+                       of_match_device(mxs_phy_dt_ids, &pdev->dev);
+       struct device_node *np = pdev->dev.of_node;
+
+       res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
+       base = devm_ioremap_resource(&pdev->dev, res);
+       if (IS_ERR(base))
+               return PTR_ERR(base);
+
+       clk = devm_clk_get(&pdev->dev, NULL);
+       if (IS_ERR(clk)) {
+               dev_err(&pdev->dev,
+                       "can't get the clock, err=%ld", PTR_ERR(clk));
+               return PTR_ERR(clk);
+       }
+
+       mxs_phy = devm_kzalloc(&pdev->dev, sizeof(*mxs_phy), GFP_KERNEL);
+       if (!mxs_phy)
+               return -ENOMEM;
+
+       /* Some SoCs don't have anatop registers */
+       if (of_get_property(np, "fsl,anatop", NULL)) {
+               mxs_phy->regmap_anatop = syscon_regmap_lookup_by_phandle
+                       (np, "fsl,anatop");
+               if (IS_ERR(mxs_phy->regmap_anatop)) {
+                       dev_dbg(&pdev->dev,
+                               "failed to find regmap for anatop\n");
+                       return PTR_ERR(mxs_phy->regmap_anatop);
+               }
+       }
+
+       ret = of_alias_get_id(np, "usbphy");
+       if (ret < 0)
+               dev_dbg(&pdev->dev, "failed to get alias id, errno %d\n", ret);
+       mxs_phy->port_id = ret;
+
+       mxs_phy->phy.io_priv            = base;
+       mxs_phy->phy.dev                = &pdev->dev;
+       mxs_phy->phy.label              = DRIVER_NAME;
+       mxs_phy->phy.init               = mxs_phy_init;
+       mxs_phy->phy.shutdown           = mxs_phy_shutdown;
+       mxs_phy->phy.set_suspend        = mxs_phy_suspend;
+       mxs_phy->phy.notify_connect     = mxs_phy_on_connect;
+       mxs_phy->phy.notify_disconnect  = mxs_phy_on_disconnect;
+       mxs_phy->phy.type               = USB_PHY_TYPE_USB2;
+       mxs_phy->phy.set_wakeup         = mxs_phy_set_wakeup;
+
+       mxs_phy->clk = clk;
+       mxs_phy->data = of_id->data;
+
+       platform_set_drvdata(pdev, mxs_phy);
+
+       device_set_wakeup_capable(&pdev->dev, true);
+
+       ret = usb_add_phy_dev(&mxs_phy->phy);
+       if (ret)
+               return ret;
+
+       return 0;
+}
+
+static int mxs_phy_remove(struct platform_device *pdev)
+{
+       struct mxs_phy *mxs_phy = platform_get_drvdata(pdev);
+
+       usb_remove_phy(&mxs_phy->phy);
+
+       return 0;
+}
+
+#ifdef CONFIG_PM_SLEEP
+static void mxs_phy_enable_ldo_in_suspend(struct mxs_phy *mxs_phy, bool on)
+{
+       unsigned int reg = on ? ANADIG_ANA_MISC0_SET : ANADIG_ANA_MISC0_CLR;
+
+       /* If the SoCs don't have anatop, quit */
+       if (!mxs_phy->regmap_anatop)
+               return;
+
+       if (is_imx6q_phy(mxs_phy))
+               regmap_write(mxs_phy->regmap_anatop, reg,
+                       BM_ANADIG_ANA_MISC0_STOP_MODE_CONFIG);
+       else if (is_imx6sl_phy(mxs_phy))
+               regmap_write(mxs_phy->regmap_anatop,
+                       reg, BM_ANADIG_ANA_MISC0_STOP_MODE_CONFIG_SL);
+}
+
+static int mxs_phy_system_suspend(struct device *dev)
+{
+       struct mxs_phy *mxs_phy = dev_get_drvdata(dev);
+
+       if (device_may_wakeup(dev))
+               mxs_phy_enable_ldo_in_suspend(mxs_phy, true);
+
+       return 0;
+}
+
+static int mxs_phy_system_resume(struct device *dev)
+{
+       struct mxs_phy *mxs_phy = dev_get_drvdata(dev);
+
+       if (device_may_wakeup(dev))
+               mxs_phy_enable_ldo_in_suspend(mxs_phy, false);
+
+       return 0;
+}
+#endif /* CONFIG_PM_SLEEP */
+
+static SIMPLE_DEV_PM_OPS(mxs_phy_pm, mxs_phy_system_suspend,
+               mxs_phy_system_resume);
+
+static struct platform_driver mxs_phy_driver = {
+       .probe = mxs_phy_probe,
+       .remove = mxs_phy_remove,
+       .driver = {
+               .name = DRIVER_NAME,
+               .of_match_table = mxs_phy_dt_ids,
+               .pm = &mxs_phy_pm,
+        },
+};
+
+static int __init mxs_phy_module_init(void)
+{
+       return platform_driver_register(&mxs_phy_driver);
+}
+postcore_initcall(mxs_phy_module_init);
+
+static void __exit mxs_phy_module_exit(void)
+{
+       platform_driver_unregister(&mxs_phy_driver);
+}
+module_exit(mxs_phy_module_exit);
+
+MODULE_ALIAS("platform:mxs-usb-phy");
+MODULE_AUTHOR("Marek Vasut <marex@denx.de>");
+MODULE_AUTHOR("Richard Zhao <richard.zhao@freescale.com>");
+MODULE_DESCRIPTION("Freescale MXS USB PHY driver");
+MODULE_LICENSE("GPL");