// SPDX-License-Identifier: GPL-2.0
/*
 *  phy-rtk-usb3.c RTK usb3.0 phy driver
 *
 * copyright (c) 2023 realtek semiconductor corporation
 *
 */

#include <linux/module.h>
#include <linux/of.h>
#include <linux/of_address.h>
#include <linux/platform_device.h>
#include <linux/uaccess.h>
#include <linux/debugfs.h>
#include <linux/nvmem-consumer.h>
#include <linux/regmap.h>
#include <linux/sys_soc.h>
#include <linux/mfd/syscon.h>
#include <linux/phy/phy.h>
#include <linux/usb.h>

#define USB_MDIO_CTRL_PHY_BUSY BIT(7)
#define USB_MDIO_CTRL_PHY_WRITE BIT(0)
#define USB_MDIO_CTRL_PHY_ADDR_SHIFT 8
#define USB_MDIO_CTRL_PHY_DATA_SHIFT 16

#define MAX_USB_PHY_DATA_SIZE 0x30
#define PHY_ADDR_0X09 0x09
#define PHY_ADDR_0X0B 0x0b
#define PHY_ADDR_0X0D 0x0d
#define PHY_ADDR_0X10 0x10
#define PHY_ADDR_0X1F 0x1f
#define PHY_ADDR_0X20 0x20
#define PHY_ADDR_0X21 0x21
#define PHY_ADDR_0X30 0x30

#define REG_0X09_FORCE_CALIBRATION BIT(9)
#define REG_0X0B_RX_OFFSET_RANGE_MASK 0xc
#define REG_0X0D_RX_DEBUG_TEST_EN BIT(6)
#define REG_0X10_DEBUG_MODE_SETTING 0x3c0
#define REG_0X10_DEBUG_MODE_SETTING_MASK 0x3f8
#define REG_0X1F_RX_OFFSET_CODE_MASK 0x1e

#define USB_U3_TX_LFPS_SWING_TRIM_SHIFT 4
#define USB_U3_TX_LFPS_SWING_TRIM_MASK 0xf
#define AMPLITUDE_CONTROL_COARSE_MASK 0xff
#define AMPLITUDE_CONTROL_FINE_MASK 0xffff
#define AMPLITUDE_CONTROL_COARSE_DEFAULT 0xff
#define AMPLITUDE_CONTROL_FINE_DEFAULT 0xffff

#define PHY_ADDR_MAP_ARRAY_INDEX(addr) (addr)
#define ARRAY_INDEX_MAP_PHY_ADDR(index) (index)

struct phy_reg {
        void __iomem *reg_mdio_ctl;
};

struct phy_data {
        u8 addr;
        u16 data;
};

struct phy_cfg {
        int param_size;
        struct phy_data param[MAX_USB_PHY_DATA_SIZE];

        bool check_efuse;
        bool do_toggle;
        bool do_toggle_once;
        bool use_default_parameter;
        bool check_rx_front_end_offset;
};

struct phy_parameter {
        struct phy_reg phy_reg;

        /* Get from efuse */
        u8 efuse_usb_u3_tx_lfps_swing_trim;

        /* Get from dts */
        u32 amplitude_control_coarse;
        u32 amplitude_control_fine;
};

struct rtk_phy {
        struct device *dev;

        struct phy_cfg *phy_cfg;
        int num_phy;
        struct phy_parameter *phy_parameter;

        struct dentry *debug_dir;
};

#define PHY_IO_TIMEOUT_USEC             (50000)
#define PHY_IO_DELAY_US                 (100)

static inline int utmi_wait_register(void __iomem *reg, u32 mask, u32 result)
{
        int ret;
        unsigned int val;

        ret = read_poll_timeout(readl, val, ((val & mask) == result),
                                PHY_IO_DELAY_US, PHY_IO_TIMEOUT_USEC, false, reg);
        if (ret) {
                pr_err("%s can't program USB phy\n", __func__);
                return -ETIMEDOUT;
        }

        return 0;
}

static int rtk_phy3_wait_vbusy(struct phy_reg *phy_reg)
{
        return utmi_wait_register(phy_reg->reg_mdio_ctl, USB_MDIO_CTRL_PHY_BUSY, 0);
}

static u16 rtk_phy_read(struct phy_reg *phy_reg, char addr)
{
        unsigned int tmp;
        u32 value;

        tmp = (addr << USB_MDIO_CTRL_PHY_ADDR_SHIFT);

        writel(tmp, phy_reg->reg_mdio_ctl);

        rtk_phy3_wait_vbusy(phy_reg);

        value = readl(phy_reg->reg_mdio_ctl);
        value = value >> USB_MDIO_CTRL_PHY_DATA_SHIFT;

        return (u16)value;
}

static int rtk_phy_write(struct phy_reg *phy_reg, char addr, u16 data)
{
        unsigned int val;

        val = USB_MDIO_CTRL_PHY_WRITE |
                    (addr << USB_MDIO_CTRL_PHY_ADDR_SHIFT) |
                    (data << USB_MDIO_CTRL_PHY_DATA_SHIFT);

        writel(val, phy_reg->reg_mdio_ctl);

        rtk_phy3_wait_vbusy(phy_reg);

        return 0;
}

static void do_rtk_usb3_phy_toggle(struct rtk_phy *rtk_phy, int index, bool connect)
{
        struct phy_cfg *phy_cfg = rtk_phy->phy_cfg;
        struct phy_reg *phy_reg;
        struct phy_parameter *phy_parameter;
        struct phy_data *phy_data;
        u8 addr;
        u16 data;
        int i;

        phy_parameter = &((struct phy_parameter *)rtk_phy->phy_parameter)[index];
        phy_reg = &phy_parameter->phy_reg;

        if (!phy_cfg->do_toggle)
                return;

        i = PHY_ADDR_MAP_ARRAY_INDEX(PHY_ADDR_0X09);
        phy_data = phy_cfg->param + i;
        addr = phy_data->addr;
        data = phy_data->data;

        if (!addr && !data) {
                addr = PHY_ADDR_0X09;
                data = rtk_phy_read(phy_reg, addr);
                phy_data->addr = addr;
                phy_data->data = data;
        }

        rtk_phy_write(phy_reg, addr, data & (~REG_0X09_FORCE_CALIBRATION));
        mdelay(1);
        rtk_phy_write(phy_reg, addr, data | REG_0X09_FORCE_CALIBRATION);
}

static int do_rtk_phy_init(struct rtk_phy *rtk_phy, int index)
{
        struct phy_cfg *phy_cfg;
        struct phy_reg *phy_reg;
        struct phy_parameter *phy_parameter;
        int i = 0;

        phy_cfg = rtk_phy->phy_cfg;
        phy_parameter = &((struct phy_parameter *)rtk_phy->phy_parameter)[index];
        phy_reg = &phy_parameter->phy_reg;

        if (phy_cfg->use_default_parameter)
                goto do_toggle;

        for (i = 0; i < phy_cfg->param_size; i++) {
                struct phy_data *phy_data = phy_cfg->param + i;
                u8 addr = phy_data->addr;
                u16 data = phy_data->data;

                if (!addr && !data)
                        continue;

                rtk_phy_write(phy_reg, addr, data);
        }

do_toggle:
        if (phy_cfg->do_toggle_once)
                phy_cfg->do_toggle = true;

        do_rtk_usb3_phy_toggle(rtk_phy, index, false);

        if (phy_cfg->do_toggle_once) {
                u16 check_value = 0;
                int count = 10;
                u16 value_0x0d, value_0x10;

                /* Enable Debug mode by set 0x0D and 0x10 */
                value_0x0d = rtk_phy_read(phy_reg, PHY_ADDR_0X0D);
                value_0x10 = rtk_phy_read(phy_reg, PHY_ADDR_0X10);

                rtk_phy_write(phy_reg, PHY_ADDR_0X0D,
                              value_0x0d | REG_0X0D_RX_DEBUG_TEST_EN);
                rtk_phy_write(phy_reg, PHY_ADDR_0X10,
                              (value_0x10 & ~REG_0X10_DEBUG_MODE_SETTING_MASK) |
                              REG_0X10_DEBUG_MODE_SETTING);

                check_value = rtk_phy_read(phy_reg, PHY_ADDR_0X30);

                while (!(check_value & BIT(15))) {
                        check_value = rtk_phy_read(phy_reg, PHY_ADDR_0X30);
                        mdelay(1);
                        if (count-- < 0)
                                break;
                }

                if (!(check_value & BIT(15)))
                        dev_info(rtk_phy->dev, "toggle fail addr=0x%02x, data=0x%04x\n",
                                 PHY_ADDR_0X30, check_value);

                /* Disable Debug mode by set 0x0D and 0x10 to default*/
                rtk_phy_write(phy_reg, PHY_ADDR_0X0D, value_0x0d);
                rtk_phy_write(phy_reg, PHY_ADDR_0X10, value_0x10);

                phy_cfg->do_toggle = false;
        }

        if (phy_cfg->check_rx_front_end_offset) {
                u16 rx_offset_code, rx_offset_range;
                u16 code_mask = REG_0X1F_RX_OFFSET_CODE_MASK;
                u16 range_mask = REG_0X0B_RX_OFFSET_RANGE_MASK;
                bool do_update = false;

                rx_offset_code = rtk_phy_read(phy_reg, PHY_ADDR_0X1F);
                if (((rx_offset_code & code_mask) == 0x0) ||
                    ((rx_offset_code & code_mask) == code_mask))
                        do_update = true;

                rx_offset_range = rtk_phy_read(phy_reg, PHY_ADDR_0X0B);
                if (((rx_offset_range & range_mask) == range_mask) && do_update) {
                        dev_warn(rtk_phy->dev, "Don't update rx_offset_range (rx_offset_code=0x%x, rx_offset_range=0x%x)\n",
                                 rx_offset_code, rx_offset_range);
                        do_update = false;
                }

                if (do_update) {
                        u16 tmp1, tmp2;

                        tmp1 = rx_offset_range & (~range_mask);
                        tmp2 = rx_offset_range & range_mask;
                        tmp2 += (1 << 2);
                        rx_offset_range = tmp1 | (tmp2 & range_mask);
                        rtk_phy_write(phy_reg, PHY_ADDR_0X0B, rx_offset_range);
                        goto do_toggle;
                }
        }

        return 0;
}

static int rtk_phy_init(struct phy *phy)
{
        struct rtk_phy *rtk_phy = phy_get_drvdata(phy);
        int ret = 0;
        int i;
        unsigned long phy_init_time = jiffies;

        for (i = 0; i < rtk_phy->num_phy; i++)
                ret = do_rtk_phy_init(rtk_phy, i);

        dev_dbg(rtk_phy->dev, "Initialized RTK USB 3.0 PHY (take %dms)\n",
                jiffies_to_msecs(jiffies - phy_init_time));

        return ret;
}

static int rtk_phy_exit(struct phy *phy)
{
        return 0;
}

static void rtk_phy_toggle(struct rtk_phy *rtk_phy, bool connect, int port)
{
        int index = port;

        if (index > rtk_phy->num_phy) {
                dev_err(rtk_phy->dev, "%s: The port=%d is not in usb phy (num_phy=%d)\n",
                        __func__, index, rtk_phy->num_phy);
                return;
        }

        do_rtk_usb3_phy_toggle(rtk_phy, index, connect);
}

static int rtk_phy_connect(struct phy *phy, int port)
{
        struct rtk_phy *rtk_phy = phy_get_drvdata(phy);

        dev_dbg(rtk_phy->dev, "%s port=%d\n", __func__, port);
        rtk_phy_toggle(rtk_phy, true, port);

        return 0;
}

static int rtk_phy_disconnect(struct phy *phy, int port)
{
        struct rtk_phy *rtk_phy = phy_get_drvdata(phy);

        dev_dbg(rtk_phy->dev, "%s port=%d\n", __func__, port);
        rtk_phy_toggle(rtk_phy, false, port);

        return 0;
}

static const struct phy_ops ops = {
        .init           = rtk_phy_init,
        .exit           = rtk_phy_exit,
        .connect        = rtk_phy_connect,
        .disconnect     = rtk_phy_disconnect,
        .owner          = THIS_MODULE,
};

#ifdef CONFIG_DEBUG_FS
static struct dentry *create_phy_debug_root(void)
{
        struct dentry *phy_debug_root;

        phy_debug_root = debugfs_lookup("phy", usb_debug_root);
        if (!phy_debug_root)
                phy_debug_root = debugfs_create_dir("phy", usb_debug_root);

        return phy_debug_root;
}

static int rtk_usb3_parameter_show(struct seq_file *s, void *unused)
{
        struct rtk_phy *rtk_phy = s->private;
        struct phy_cfg *phy_cfg;
        int i, index;

        phy_cfg = rtk_phy->phy_cfg;

        seq_puts(s, "Property:\n");
        seq_printf(s, "  check_efuse: %s\n",
                   phy_cfg->check_efuse ? "Enable" : "Disable");
        seq_printf(s, "  do_toggle: %s\n",
                   phy_cfg->do_toggle ? "Enable" : "Disable");
        seq_printf(s, "  do_toggle_once: %s\n",
                   phy_cfg->do_toggle_once ? "Enable" : "Disable");
        seq_printf(s, "  use_default_parameter: %s\n",
                   phy_cfg->use_default_parameter ? "Enable" : "Disable");

        for (index = 0; index < rtk_phy->num_phy; index++) {
                struct phy_reg *phy_reg;
                struct phy_parameter *phy_parameter;

                phy_parameter = &((struct phy_parameter *)rtk_phy->phy_parameter)[index];
                phy_reg = &phy_parameter->phy_reg;

                seq_printf(s, "PHY %d:\n", index);

                for (i = 0; i < phy_cfg->param_size; i++) {
                        struct phy_data *phy_data = phy_cfg->param + i;
                        u8 addr = ARRAY_INDEX_MAP_PHY_ADDR(i);
                        u16 data = phy_data->data;

                        if (!phy_data->addr && !data)
                                seq_printf(s, "  addr = 0x%02x, data = none   ==> read value = 0x%04x\n",
                                           addr, rtk_phy_read(phy_reg, addr));
                        else
                                seq_printf(s, "  addr = 0x%02x, data = 0x%04x ==> read value = 0x%04x\n",
                                           addr, data, rtk_phy_read(phy_reg, addr));
                }

                seq_puts(s, "PHY Property:\n");
                seq_printf(s, "  efuse_usb_u3_tx_lfps_swing_trim: 0x%x\n",
                           (int)phy_parameter->efuse_usb_u3_tx_lfps_swing_trim);
                seq_printf(s, "  amplitude_control_coarse: 0x%x\n",
                           (int)phy_parameter->amplitude_control_coarse);
                seq_printf(s, "  amplitude_control_fine: 0x%x\n",
                           (int)phy_parameter->amplitude_control_fine);
        }

        return 0;
}
DEFINE_SHOW_ATTRIBUTE(rtk_usb3_parameter);

static inline void create_debug_files(struct rtk_phy *rtk_phy)
{
        struct dentry *phy_debug_root = NULL;

        phy_debug_root = create_phy_debug_root();

        if (!phy_debug_root)
                return;

        rtk_phy->debug_dir = debugfs_create_dir(dev_name(rtk_phy->dev), phy_debug_root);

        debugfs_create_file("parameter", 0444, rtk_phy->debug_dir, rtk_phy,
                            &rtk_usb3_parameter_fops);
}

static inline void remove_debug_files(struct rtk_phy *rtk_phy)
{
        debugfs_remove_recursive(rtk_phy->debug_dir);
}
#else
static inline void create_debug_files(struct rtk_phy *rtk_phy) { }
static inline void remove_debug_files(struct rtk_phy *rtk_phy) { }
#endif /* CONFIG_DEBUG_FS */

static int get_phy_data_by_efuse(struct rtk_phy *rtk_phy,
                                 struct phy_parameter *phy_parameter, int index)
{
        struct phy_cfg *phy_cfg = rtk_phy->phy_cfg;
        u8 value = 0;
        struct nvmem_cell *cell;

        if (!phy_cfg->check_efuse)
                goto out;

        cell = nvmem_cell_get(rtk_phy->dev, "usb_u3_tx_lfps_swing_trim");
        if (IS_ERR(cell)) {
                dev_dbg(rtk_phy->dev, "%s no usb_u3_tx_lfps_swing_trim: %ld\n",
                        __func__, PTR_ERR(cell));
        } else {
                unsigned char *buf;
                size_t buf_size;

                buf = nvmem_cell_read(cell, &buf_size);
                if (!IS_ERR(buf)) {
                        value = buf[0] & USB_U3_TX_LFPS_SWING_TRIM_MASK;
                        kfree(buf);
                }
                nvmem_cell_put(cell);
        }

        if (value > 0 && value < 0x8)
                phy_parameter->efuse_usb_u3_tx_lfps_swing_trim = 0x8;
        else
                phy_parameter->efuse_usb_u3_tx_lfps_swing_trim = (u8)value;

out:
        return 0;
}

static void update_amplitude_control_value(struct rtk_phy *rtk_phy,
                                           struct phy_parameter *phy_parameter)
{
        struct phy_cfg *phy_cfg;
        struct phy_reg *phy_reg;

        phy_reg = &phy_parameter->phy_reg;
        phy_cfg = rtk_phy->phy_cfg;

        if (phy_parameter->amplitude_control_coarse != AMPLITUDE_CONTROL_COARSE_DEFAULT) {
                u16 val_mask = AMPLITUDE_CONTROL_COARSE_MASK;
                u16 data;

                if (!phy_cfg->param[PHY_ADDR_0X20].addr && !phy_cfg->param[PHY_ADDR_0X20].data) {
                        phy_cfg->param[PHY_ADDR_0X20].addr = PHY_ADDR_0X20;
                        data = rtk_phy_read(phy_reg, PHY_ADDR_0X20);
                } else {
                        data = phy_cfg->param[PHY_ADDR_0X20].data;
                }

                data &= (~val_mask);
                data |= (phy_parameter->amplitude_control_coarse & val_mask);

                phy_cfg->param[PHY_ADDR_0X20].data = data;
        }

        if (phy_parameter->efuse_usb_u3_tx_lfps_swing_trim) {
                u8 efuse_val = phy_parameter->efuse_usb_u3_tx_lfps_swing_trim;
                u16 val_mask = USB_U3_TX_LFPS_SWING_TRIM_MASK;
                int val_shift = USB_U3_TX_LFPS_SWING_TRIM_SHIFT;
                u16 data;

                if (!phy_cfg->param[PHY_ADDR_0X20].addr && !phy_cfg->param[PHY_ADDR_0X20].data) {
                        phy_cfg->param[PHY_ADDR_0X20].addr = PHY_ADDR_0X20;
                        data = rtk_phy_read(phy_reg, PHY_ADDR_0X20);
                } else {
                        data = phy_cfg->param[PHY_ADDR_0X20].data;
                }

                data &= ~(val_mask << val_shift);
                data |= ((efuse_val & val_mask) << val_shift);

                phy_cfg->param[PHY_ADDR_0X20].data = data;
        }

        if (phy_parameter->amplitude_control_fine != AMPLITUDE_CONTROL_FINE_DEFAULT) {
                u16 val_mask = AMPLITUDE_CONTROL_FINE_MASK;

                if (!phy_cfg->param[PHY_ADDR_0X21].addr && !phy_cfg->param[PHY_ADDR_0X21].data)
                        phy_cfg->param[PHY_ADDR_0X21].addr = PHY_ADDR_0X21;

                phy_cfg->param[PHY_ADDR_0X21].data =
                            phy_parameter->amplitude_control_fine & val_mask;
        }
}

static int parse_phy_data(struct rtk_phy *rtk_phy)
{
        struct device *dev = rtk_phy->dev;
        struct phy_parameter *phy_parameter;
        int ret = 0;
        int index;

        rtk_phy->phy_parameter = devm_kzalloc(dev, sizeof(struct phy_parameter) *
                                              rtk_phy->num_phy, GFP_KERNEL);
        if (!rtk_phy->phy_parameter)
                return -ENOMEM;

        for (index = 0; index < rtk_phy->num_phy; index++) {
                phy_parameter = &((struct phy_parameter *)rtk_phy->phy_parameter)[index];

                phy_parameter->phy_reg.reg_mdio_ctl = of_iomap(dev->of_node, 0) + index;

                /* Amplitude control address 0x20 bit 0 to bit 7 */
                if (of_property_read_u32(dev->of_node, "realtek,amplitude-control-coarse-tuning",
                                         &phy_parameter->amplitude_control_coarse))
                        phy_parameter->amplitude_control_coarse = AMPLITUDE_CONTROL_COARSE_DEFAULT;

                /* Amplitude control address 0x21 bit 0 to bit 16 */
                if (of_property_read_u32(dev->of_node, "realtek,amplitude-control-fine-tuning",
                                         &phy_parameter->amplitude_control_fine))
                        phy_parameter->amplitude_control_fine = AMPLITUDE_CONTROL_FINE_DEFAULT;

                get_phy_data_by_efuse(rtk_phy, phy_parameter, index);

                update_amplitude_control_value(rtk_phy, phy_parameter);
        }

        return ret;
}

static int rtk_usb3phy_probe(struct platform_device *pdev)
{
        struct rtk_phy *rtk_phy;
        struct device *dev = &pdev->dev;
        struct phy *generic_phy;
        struct phy_provider *phy_provider;
        const struct phy_cfg *phy_cfg;
        int ret;

        phy_cfg = of_device_get_match_data(dev);
        if (!phy_cfg) {
                dev_err(dev, "phy config are not assigned!\n");
                return -EINVAL;
        }

        rtk_phy = devm_kzalloc(dev, sizeof(*rtk_phy), GFP_KERNEL);
        if (!rtk_phy)
                return -ENOMEM;

        rtk_phy->dev                    = &pdev->dev;
        rtk_phy->phy_cfg = devm_kzalloc(dev, sizeof(*phy_cfg), GFP_KERNEL);
        if (!rtk_phy->phy_cfg)
                return -ENOMEM;

        memcpy(rtk_phy->phy_cfg, phy_cfg, sizeof(*phy_cfg));

        rtk_phy->num_phy = 1;

        ret = parse_phy_data(rtk_phy);
        if (ret)
                goto err;

        platform_set_drvdata(pdev, rtk_phy);

        generic_phy = devm_phy_create(rtk_phy->dev, NULL, &ops);
        if (IS_ERR(generic_phy))
                return PTR_ERR(generic_phy);

        phy_set_drvdata(generic_phy, rtk_phy);

        phy_provider = devm_of_phy_provider_register(rtk_phy->dev, of_phy_simple_xlate);
        if (IS_ERR(phy_provider))
                return PTR_ERR(phy_provider);

        create_debug_files(rtk_phy);

err:
        return ret;
}

static void rtk_usb3phy_remove(struct platform_device *pdev)
{
        struct rtk_phy *rtk_phy = platform_get_drvdata(pdev);

        remove_debug_files(rtk_phy);
}

static const struct phy_cfg rtd1295_phy_cfg = {
        .param_size = MAX_USB_PHY_DATA_SIZE,
        .param = {  [0] = {0x01, 0x4008},  [1] = {0x01, 0xe046},
                    [2] = {0x02, 0x6046},  [3] = {0x03, 0x2779},
                    [4] = {0x04, 0x72f5},  [5] = {0x05, 0x2ad3},
                    [6] = {0x06, 0x000e},  [7] = {0x07, 0x2e00},
                    [8] = {0x08, 0x3591},  [9] = {0x09, 0x525c},
                   [10] = {0x0a, 0xa600}, [11] = {0x0b, 0xa904},
                   [12] = {0x0c, 0xc000}, [13] = {0x0d, 0xef1c},
                   [14] = {0x0e, 0x2000}, [15] = {0x0f, 0x0000},
                   [16] = {0x10, 0x000c}, [17] = {0x11, 0x4c00},
                   [18] = {0x12, 0xfc00}, [19] = {0x13, 0x0c81},
                   [20] = {0x14, 0xde01}, [21] = {0x15, 0x0000},
                   [22] = {0x16, 0x0000}, [23] = {0x17, 0x0000},
                   [24] = {0x18, 0x0000}, [25] = {0x19, 0x4004},
                   [26] = {0x1a, 0x1260}, [27] = {0x1b, 0xff00},
                   [28] = {0x1c, 0xcb00}, [29] = {0x1d, 0xa03f},
                   [30] = {0x1e, 0xc2e0}, [31] = {0x1f, 0x2807},
                   [32] = {0x20, 0x947a}, [33] = {0x21, 0x88aa},
                   [34] = {0x22, 0x0057}, [35] = {0x23, 0xab66},
                   [36] = {0x24, 0x0800}, [37] = {0x25, 0x0000},
                   [38] = {0x26, 0x040a}, [39] = {0x27, 0x01d6},
                   [40] = {0x28, 0xf8c2}, [41] = {0x29, 0x3080},
                   [42] = {0x2a, 0x3082}, [43] = {0x2b, 0x2078},
                   [44] = {0x2c, 0xffff}, [45] = {0x2d, 0xffff},
                   [46] = {0x2e, 0x0000}, [47] = {0x2f, 0x0040}, },
        .check_efuse = false,
        .do_toggle = true,
        .do_toggle_once = false,
        .use_default_parameter = false,
        .check_rx_front_end_offset = false,
};

static const struct phy_cfg rtd1619_phy_cfg = {
        .param_size = MAX_USB_PHY_DATA_SIZE,
        .param = {  [8] = {0x08, 0x3591},
                   [38] = {0x26, 0x840b},
                   [40] = {0x28, 0xf842}, },
        .check_efuse = false,
        .do_toggle = true,
        .do_toggle_once = false,
        .use_default_parameter = false,
        .check_rx_front_end_offset = false,
};

static const struct phy_cfg rtd1319_phy_cfg = {
        .param_size = MAX_USB_PHY_DATA_SIZE,
        .param = {  [1] = {0x01, 0xac86},
                    [6] = {0x06, 0x0003},
                    [9] = {0x09, 0x924c},
                   [10] = {0x0a, 0xa608},
                   [11] = {0x0b, 0xb905},
                   [14] = {0x0e, 0x2010},
                   [32] = {0x20, 0x705a},
                   [33] = {0x21, 0xf645},
                   [34] = {0x22, 0x0013},
                   [35] = {0x23, 0xcb66},
                   [41] = {0x29, 0xff00}, },
        .check_efuse = true,
        .do_toggle = true,
        .do_toggle_once = false,
        .use_default_parameter = false,
        .check_rx_front_end_offset = false,
};

static const struct phy_cfg rtd1619b_phy_cfg = {
        .param_size = MAX_USB_PHY_DATA_SIZE,
        .param = {  [1] = {0x01, 0xac8c},
                    [6] = {0x06, 0x0017},
                    [9] = {0x09, 0x724c},
                   [10] = {0x0a, 0xb610},
                   [11] = {0x0b, 0xb90d},
                   [13] = {0x0d, 0xef2a},
                   [15] = {0x0f, 0x9050},
                   [16] = {0x10, 0x000c},
                   [32] = {0x20, 0x70ff},
                   [34] = {0x22, 0x0013},
                   [35] = {0x23, 0xdb66},
                   [38] = {0x26, 0x8609},
                   [41] = {0x29, 0xff13},
                   [42] = {0x2a, 0x3070}, },
        .check_efuse = true,
        .do_toggle = false,
        .do_toggle_once = true,
        .use_default_parameter = false,
        .check_rx_front_end_offset = false,
};

static const  struct phy_cfg rtd1319d_phy_cfg = {
        .param_size = MAX_USB_PHY_DATA_SIZE,
        .param = {  [1] = {0x01, 0xac89},
                    [4] = {0x04, 0xf2f5},
                    [6] = {0x06, 0x0017},
                    [9] = {0x09, 0x424c},
                   [10] = {0x0a, 0x9610},
                   [11] = {0x0b, 0x9901},
                   [12] = {0x0c, 0xf000},
                   [13] = {0x0d, 0xef2a},
                   [14] = {0x0e, 0x1000},
                   [15] = {0x0f, 0x9050},
                   [32] = {0x20, 0x7077},
                   [35] = {0x23, 0x0b62},
                   [37] = {0x25, 0x10ec},
                   [42] = {0x2a, 0x3070}, },
        .check_efuse = true,
        .do_toggle = false,
        .do_toggle_once = true,
        .use_default_parameter = false,
        .check_rx_front_end_offset = true,
};

static const struct of_device_id usbphy_rtk_dt_match[] = {
        { .compatible = "realtek,rtd1295-usb3phy", .data = &rtd1295_phy_cfg },
        { .compatible = "realtek,rtd1319-usb3phy", .data = &rtd1319_phy_cfg },
        { .compatible = "realtek,rtd1319d-usb3phy", .data = &rtd1319d_phy_cfg },
        { .compatible = "realtek,rtd1619-usb3phy", .data = &rtd1619_phy_cfg },
        { .compatible = "realtek,rtd1619b-usb3phy", .data = &rtd1619b_phy_cfg },
        {},
};
MODULE_DEVICE_TABLE(of, usbphy_rtk_dt_match);

static struct platform_driver rtk_usb3phy_driver = {
        .probe          = rtk_usb3phy_probe,
        .remove         = rtk_usb3phy_remove,
        .driver         = {
                .name   = "rtk-usb3phy",
                .of_match_table = usbphy_rtk_dt_match,
        },
};

module_platform_driver(rtk_usb3phy_driver);

MODULE_LICENSE("GPL");
MODULE_AUTHOR("Stanley Chang <stanley_chang@realtek.com>");
MODULE_DESCRIPTION("Realtek usb 3.0 phy driver");