// SPDX-License-Identifier: GPL-2.0-only
/*
 * Copyright (c) 2014, NVIDIA CORPORATION.  All rights reserved.
 * Copyright (C) 2015 Google, Inc.
 */

#include <linux/clk.h>
#include <linux/clk/tegra.h>
#include <linux/delay.h>
#include <linux/io.h>
#include <linux/mailbox_client.h>
#include <linux/module.h>
#include <linux/of.h>
#include <linux/phy/phy.h>
#include <linux/platform_device.h>
#include <linux/regulator/consumer.h>
#include <linux/reset.h>
#include <linux/slab.h>

#include <soc/tegra/fuse.h>

#include "xusb.h"

#define FUSE_SKU_CALIB_HS_CURR_LEVEL_PADX_SHIFT(x) \
                                        ((x) ? (11 + ((x) - 1) * 6) : 0)
#define FUSE_SKU_CALIB_HS_CURR_LEVEL_PAD_MASK 0x3f
#define FUSE_SKU_CALIB_HS_TERM_RANGE_ADJ_SHIFT 7
#define FUSE_SKU_CALIB_HS_TERM_RANGE_ADJ_MASK 0xf

#define FUSE_USB_CALIB_EXT_RPD_CTRL_SHIFT 0
#define FUSE_USB_CALIB_EXT_RPD_CTRL_MASK 0x1f

#define XUSB_PADCTL_USB2_PAD_MUX 0x004
#define XUSB_PADCTL_USB2_PAD_MUX_HSIC_PAD_TRK_SHIFT 16
#define XUSB_PADCTL_USB2_PAD_MUX_HSIC_PAD_TRK_MASK 0x3
#define XUSB_PADCTL_USB2_PAD_MUX_HSIC_PAD_TRK_XUSB 0x1
#define XUSB_PADCTL_USB2_PAD_MUX_USB2_BIAS_PAD_SHIFT 18
#define XUSB_PADCTL_USB2_PAD_MUX_USB2_BIAS_PAD_MASK 0x3
#define XUSB_PADCTL_USB2_PAD_MUX_USB2_BIAS_PAD_XUSB 0x1

#define XUSB_PADCTL_USB2_PORT_CAP 0x008
#define XUSB_PADCTL_USB2_PORT_CAP_PORTX_CAP_DISABLED(x) (0x0 << ((x) * 4))
#define XUSB_PADCTL_USB2_PORT_CAP_PORTX_CAP_HOST(x) (0x1 << ((x) * 4))
#define XUSB_PADCTL_USB2_PORT_CAP_PORTX_CAP_DEVICE(x) (0x2 << ((x) * 4))
#define XUSB_PADCTL_USB2_PORT_CAP_PORTX_CAP_OTG(x) (0x3 << ((x) * 4))
#define XUSB_PADCTL_USB2_PORT_CAP_PORTX_CAP_MASK(x) (0x3 << ((x) * 4))

#define XUSB_PADCTL_SS_PORT_MAP 0x014
#define XUSB_PADCTL_SS_PORT_MAP_PORTX_INTERNAL(x) (1 << (((x) * 5) + 4))
#define XUSB_PADCTL_SS_PORT_MAP_PORTX_MAP_SHIFT(x) ((x) * 5)
#define XUSB_PADCTL_SS_PORT_MAP_PORTX_MAP_MASK(x) (0x7 << ((x) * 5))
#define XUSB_PADCTL_SS_PORT_MAP_PORTX_MAP(x, v) (((v) & 0x7) << ((x) * 5))
#define XUSB_PADCTL_SS_PORT_MAP_PORT_DISABLED 0x7

#define XUSB_PADCTL_ELPG_PROGRAM1 0x024
#define XUSB_PADCTL_ELPG_PROGRAM1_AUX_MUX_LP0_VCORE_DOWN (1 << 31)
#define XUSB_PADCTL_ELPG_PROGRAM1_AUX_MUX_LP0_CLAMP_EN_EARLY (1 << 30)
#define XUSB_PADCTL_ELPG_PROGRAM1_AUX_MUX_LP0_CLAMP_EN (1 << 29)
#define XUSB_PADCTL_ELPG_PROGRAM1_SSPX_ELPG_VCORE_DOWN(x) (1 << (2 + (x) * 3))
#define XUSB_PADCTL_ELPG_PROGRAM1_SSPX_ELPG_CLAMP_EN_EARLY(x) \
                                                        (1 << (1 + (x) * 3))
#define XUSB_PADCTL_ELPG_PROGRAM1_SSPX_ELPG_CLAMP_EN(x) (1 << ((x) * 3))

#define XUSB_PADCTL_USB3_PAD_MUX 0x028
#define XUSB_PADCTL_USB3_PAD_MUX_PCIE_IDDQ_DISABLE(x) (1 << (1 + (x)))
#define XUSB_PADCTL_USB3_PAD_MUX_SATA_IDDQ_DISABLE(x) (1 << (8 + (x)))

#define XUSB_PADCTL_USB2_BATTERY_CHRG_OTGPADX_CTL0(x) (0x080 + (x) * 0x40)
#define XUSB_PADCTL_USB2_BATTERY_CHRG_OTGPAD_CTL0_ZIP (1 << 18)
#define XUSB_PADCTL_USB2_BATTERY_CHRG_OTGPAD_CTL0_ZIN (1 << 22)

#define XUSB_PADCTL_USB2_BATTERY_CHRG_OTGPADX_CTL1(x) (0x084 + (x) * 0x40)
#define XUSB_PADCTL_USB2_BATTERY_CHRG_OTGPAD_CTL1_VREG_LEV_SHIFT 7
#define XUSB_PADCTL_USB2_BATTERY_CHRG_OTGPAD_CTL1_VREG_LEV_MASK 0x3
#define XUSB_PADCTL_USB2_BATTERY_CHRG_OTGPAD_CTL1_VREG_LEV_VAL 0x1
#define XUSB_PADCTL_USB2_BATTERY_CHRG_OTGPAD_CTL1_VREG_FIX18 (1 << 6)

#define XUSB_PADCTL_USB2_OTG_PADX_CTL0(x) (0x088 + (x) * 0x40)
#define XUSB_PADCTL_USB2_OTG_PAD_CTL0_PD_ZI (1 << 29)
#define XUSB_PADCTL_USB2_OTG_PAD_CTL0_PD2 (1 << 27)
#define XUSB_PADCTL_USB2_OTG_PAD_CTL0_PD (1 << 26)
#define XUSB_PADCTL_USB2_OTG_PAD_CTL0_HS_CURR_LEVEL_SHIFT 0
#define XUSB_PADCTL_USB2_OTG_PAD_CTL0_HS_CURR_LEVEL_MASK 0x3f

#define XUSB_PADCTL_USB2_OTG_PADX_CTL1(x) (0x08c + (x) * 0x40)
#define XUSB_PADCTL_USB2_OTG_PAD_CTL1_RPD_CTRL_SHIFT 26
#define XUSB_PADCTL_USB2_OTG_PAD_CTL1_RPD_CTRL_MASK 0x1f
#define XUSB_PADCTL_USB2_OTG_PAD_CTL1_TERM_RANGE_ADJ_SHIFT 3
#define XUSB_PADCTL_USB2_OTG_PAD_CTL1_TERM_RANGE_ADJ_MASK 0xf
#define XUSB_PADCTL_USB2_OTG_PAD_CTL1_PD_DR (1 << 2)
#define XUSB_PADCTL_USB2_OTG_PAD_CTL1_PD_DISC_OVRD (1 << 1)
#define XUSB_PADCTL_USB2_OTG_PAD_CTL1_PD_CHRP_OVRD (1 << 0)

#define XUSB_PADCTL_USB2_BIAS_PAD_CTL0 0x284
#define XUSB_PADCTL_USB2_BIAS_PAD_CTL0_PD (1 << 11)
#define XUSB_PADCTL_USB2_BIAS_PAD_CTL0_HS_DISCON_LEVEL_SHIFT 3
#define XUSB_PADCTL_USB2_BIAS_PAD_CTL0_HS_DISCON_LEVEL_MASK 0x7
#define XUSB_PADCTL_USB2_BIAS_PAD_CTL0_HS_DISCON_LEVEL_VAL 0x7
#define XUSB_PADCTL_USB2_BIAS_PAD_CTL0_HS_SQUELCH_LEVEL_SHIFT 0
#define XUSB_PADCTL_USB2_BIAS_PAD_CTL0_HS_SQUELCH_LEVEL_MASK 0x7
#define XUSB_PADCTL_USB2_BIAS_PAD_CTL0_HS_SQUELCH_LEVEL_VAL 0x2

#define XUSB_PADCTL_USB2_BIAS_PAD_CTL1 0x288
#define XUSB_PADCTL_USB2_BIAS_PAD_CTL1_PD_TRK (1 << 26)
#define XUSB_PADCTL_USB2_BIAS_PAD_CTL1_TRK_DONE_RESET_TIMER_SHIFT 19
#define XUSB_PADCTL_USB2_BIAS_PAD_CTL1_TRK_DONE_RESET_TIMER_MASK 0x7f
#define XUSB_PADCTL_USB2_BIAS_PAD_CTL1_TRK_DONE_RESET_TIMER_VAL 0x0a
#define XUSB_PADCTL_USB2_BIAS_PAD_CTL1_TRK_START_TIMER_SHIFT 12
#define XUSB_PADCTL_USB2_BIAS_PAD_CTL1_TRK_START_TIMER_MASK 0x7f
#define XUSB_PADCTL_USB2_BIAS_PAD_CTL1_TRK_START_TIMER_VAL 0x1e

#define XUSB_PADCTL_HSIC_PADX_CTL0(x) (0x300 + (x) * 0x20)
#define XUSB_PADCTL_HSIC_PAD_CTL0_RPU_STROBE (1 << 18)
#define XUSB_PADCTL_HSIC_PAD_CTL0_RPU_DATA1 (1 << 17)
#define XUSB_PADCTL_HSIC_PAD_CTL0_RPU_DATA0 (1 << 16)
#define XUSB_PADCTL_HSIC_PAD_CTL0_RPD_STROBE (1 << 15)
#define XUSB_PADCTL_HSIC_PAD_CTL0_RPD_DATA1 (1 << 14)
#define XUSB_PADCTL_HSIC_PAD_CTL0_RPD_DATA0 (1 << 13)
#define XUSB_PADCTL_HSIC_PAD_CTL0_PD_ZI_STROBE (1 << 9)
#define XUSB_PADCTL_HSIC_PAD_CTL0_PD_ZI_DATA1 (1 << 8)
#define XUSB_PADCTL_HSIC_PAD_CTL0_PD_ZI_DATA0 (1 << 7)
#define XUSB_PADCTL_HSIC_PAD_CTL0_PD_RX_STROBE (1 << 6)
#define XUSB_PADCTL_HSIC_PAD_CTL0_PD_RX_DATA1 (1 << 5)
#define XUSB_PADCTL_HSIC_PAD_CTL0_PD_RX_DATA0 (1 << 4)
#define XUSB_PADCTL_HSIC_PAD_CTL0_PD_TX_STROBE (1 << 3)
#define XUSB_PADCTL_HSIC_PAD_CTL0_PD_TX_DATA1 (1 << 2)
#define XUSB_PADCTL_HSIC_PAD_CTL0_PD_TX_DATA0 (1 << 1)

#define XUSB_PADCTL_HSIC_PADX_CTL1(x) (0x304 + (x) * 0x20)
#define XUSB_PADCTL_HSIC_PAD_CTL1_TX_RTUNEP_SHIFT 0
#define XUSB_PADCTL_HSIC_PAD_CTL1_TX_RTUNEP_MASK 0xf

#define XUSB_PADCTL_HSIC_PADX_CTL2(x) (0x308 + (x) * 0x20)
#define XUSB_PADCTL_HSIC_PAD_CTL2_RX_STROBE_TRIM_SHIFT 8
#define XUSB_PADCTL_HSIC_PAD_CTL2_RX_STROBE_TRIM_MASK 0xf
#define XUSB_PADCTL_HSIC_PAD_CTL2_RX_DATA_TRIM_SHIFT 0
#define XUSB_PADCTL_HSIC_PAD_CTL2_RX_DATA_TRIM_MASK 0xff

#define XUSB_PADCTL_HSIC_PAD_TRK_CTL 0x340
#define XUSB_PADCTL_HSIC_PAD_TRK_CTL_PD_TRK (1 << 19)
#define XUSB_PADCTL_HSIC_PAD_TRK_CTL_TRK_DONE_RESET_TIMER_SHIFT 12
#define XUSB_PADCTL_HSIC_PAD_TRK_CTL_TRK_DONE_RESET_TIMER_MASK 0x7f
#define XUSB_PADCTL_HSIC_PAD_TRK_CTL_TRK_DONE_RESET_TIMER_VAL 0x0a
#define XUSB_PADCTL_HSIC_PAD_TRK_CTL_TRK_START_TIMER_SHIFT 5
#define XUSB_PADCTL_HSIC_PAD_TRK_CTL_TRK_START_TIMER_MASK 0x7f
#define XUSB_PADCTL_HSIC_PAD_TRK_CTL_TRK_START_TIMER_VAL 0x1e

#define XUSB_PADCTL_HSIC_STRB_TRIM_CONTROL 0x344

#define XUSB_PADCTL_UPHY_PLL_P0_CTL1 0x360
#define XUSB_PADCTL_UPHY_PLL_CTL1_FREQ_NDIV_SHIFT 20
#define XUSB_PADCTL_UPHY_PLL_CTL1_FREQ_NDIV_MASK 0xff
#define XUSB_PADCTL_UPHY_PLL_CTL1_FREQ_NDIV_USB_VAL 0x19
#define XUSB_PADCTL_UPHY_PLL_CTL1_FREQ_NDIV_SATA_VAL 0x1e
#define XUSB_PADCTL_UPHY_PLL_CTL1_FREQ_MDIV_SHIFT 16
#define XUSB_PADCTL_UPHY_PLL_CTL1_FREQ_MDIV_MASK 0x3
#define XUSB_PADCTL_UPHY_PLL_CTL1_LOCKDET_STATUS (1 << 15)
#define XUSB_PADCTL_UPHY_PLL_CTL1_PWR_OVRD (1 << 4)
#define XUSB_PADCTL_UPHY_PLL_CTL1_ENABLE (1 << 3)
#define XUSB_PADCTL_UPHY_PLL_CTL1_SLEEP_SHIFT 1
#define XUSB_PADCTL_UPHY_PLL_CTL1_SLEEP_MASK 0x3
#define XUSB_PADCTL_UPHY_PLL_CTL1_IDDQ (1 << 0)

#define XUSB_PADCTL_UPHY_PLL_P0_CTL2 0x364
#define XUSB_PADCTL_UPHY_PLL_CTL2_CAL_CTRL_SHIFT 4
#define XUSB_PADCTL_UPHY_PLL_CTL2_CAL_CTRL_MASK 0xffffff
#define XUSB_PADCTL_UPHY_PLL_CTL2_CAL_CTRL_VAL 0x136
#define XUSB_PADCTL_UPHY_PLL_CTL2_CAL_OVRD (1 << 2)
#define XUSB_PADCTL_UPHY_PLL_CTL2_CAL_DONE (1 << 1)
#define XUSB_PADCTL_UPHY_PLL_CTL2_CAL_EN (1 << 0)

#define XUSB_PADCTL_UPHY_PLL_P0_CTL4 0x36c
#define XUSB_PADCTL_UPHY_PLL_CTL4_XDIGCLK_EN (1 << 19)
#define XUSB_PADCTL_UPHY_PLL_CTL4_TXCLKREF_EN (1 << 15)
#define XUSB_PADCTL_UPHY_PLL_CTL4_TXCLKREF_SEL_SHIFT 12
#define XUSB_PADCTL_UPHY_PLL_CTL4_TXCLKREF_SEL_MASK 0x3
#define XUSB_PADCTL_UPHY_PLL_CTL4_TXCLKREF_SEL_USB_VAL 0x2
#define XUSB_PADCTL_UPHY_PLL_CTL4_TXCLKREF_SEL_SATA_VAL 0x0
#define XUSB_PADCTL_UPHY_PLL_CTL4_REFCLKBUF_EN (1 << 8)
#define XUSB_PADCTL_UPHY_PLL_CTL4_REFCLK_SEL_SHIFT 4
#define XUSB_PADCTL_UPHY_PLL_CTL4_REFCLK_SEL_MASK 0xf

#define XUSB_PADCTL_UPHY_PLL_P0_CTL5 0x370
#define XUSB_PADCTL_UPHY_PLL_CTL5_DCO_CTRL_SHIFT 16
#define XUSB_PADCTL_UPHY_PLL_CTL5_DCO_CTRL_MASK 0xff
#define XUSB_PADCTL_UPHY_PLL_CTL5_DCO_CTRL_VAL 0x2a

#define XUSB_PADCTL_UPHY_PLL_P0_CTL8 0x37c
#define XUSB_PADCTL_UPHY_PLL_CTL8_RCAL_DONE (1 << 31)
#define XUSB_PADCTL_UPHY_PLL_CTL8_RCAL_OVRD (1 << 15)
#define XUSB_PADCTL_UPHY_PLL_CTL8_RCAL_CLK_EN (1 << 13)
#define XUSB_PADCTL_UPHY_PLL_CTL8_RCAL_EN (1 << 12)

#define XUSB_PADCTL_UPHY_MISC_PAD_PX_CTL1(x) (0x460 + (x) * 0x40)
#define XUSB_PADCTL_UPHY_MISC_PAD_CTL1_AUX_RX_IDLE_MODE_SHIFT 20
#define XUSB_PADCTL_UPHY_MISC_PAD_CTL1_AUX_RX_IDLE_MODE_MASK 0x3
#define XUSB_PADCTL_UPHY_MISC_PAD_CTL1_AUX_RX_IDLE_MODE_VAL 0x1
#define XUSB_PADCTL_UPHY_MISC_PAD_CTL1_AUX_RX_TERM_EN BIT(18)
#define XUSB_PADCTL_UPHY_MISC_PAD_CTL1_AUX_RX_MODE_OVRD BIT(13)

#define XUSB_PADCTL_UPHY_PLL_S0_CTL1 0x860

#define XUSB_PADCTL_UPHY_PLL_S0_CTL2 0x864

#define XUSB_PADCTL_UPHY_PLL_S0_CTL4 0x86c

#define XUSB_PADCTL_UPHY_PLL_S0_CTL5 0x870

#define XUSB_PADCTL_UPHY_PLL_S0_CTL8 0x87c

#define XUSB_PADCTL_UPHY_MISC_PAD_S0_CTL1 0x960

#define XUSB_PADCTL_UPHY_USB3_PADX_ECTL1(x) (0xa60 + (x) * 0x40)
#define XUSB_PADCTL_UPHY_USB3_PAD_ECTL1_TX_TERM_CTRL_SHIFT 16
#define XUSB_PADCTL_UPHY_USB3_PAD_ECTL1_TX_TERM_CTRL_MASK 0x3
#define XUSB_PADCTL_UPHY_USB3_PAD_ECTL1_TX_TERM_CTRL_VAL 0x2

#define XUSB_PADCTL_UPHY_USB3_PADX_ECTL2(x) (0xa64 + (x) * 0x40)
#define XUSB_PADCTL_UPHY_USB3_PAD_ECTL2_RX_CTLE_SHIFT 0
#define XUSB_PADCTL_UPHY_USB3_PAD_ECTL2_RX_CTLE_MASK 0xffff
#define XUSB_PADCTL_UPHY_USB3_PAD_ECTL2_RX_CTLE_VAL 0x00fc

#define XUSB_PADCTL_UPHY_USB3_PADX_ECTL3(x) (0xa68 + (x) * 0x40)
#define XUSB_PADCTL_UPHY_USB3_PAD_ECTL3_RX_DFE_VAL 0xc0077f1f

#define XUSB_PADCTL_UPHY_USB3_PADX_ECTL4(x) (0xa6c + (x) * 0x40)
#define XUSB_PADCTL_UPHY_USB3_PAD_ECTL4_RX_CDR_CTRL_SHIFT 16
#define XUSB_PADCTL_UPHY_USB3_PAD_ECTL4_RX_CDR_CTRL_MASK 0xffff
#define XUSB_PADCTL_UPHY_USB3_PAD_ECTL4_RX_CDR_CTRL_VAL 0x01c7

#define XUSB_PADCTL_UPHY_USB3_PADX_ECTL6(x) (0xa74 + (x) * 0x40)
#define XUSB_PADCTL_UPHY_USB3_PAD_ECTL6_RX_EQ_CTRL_H_VAL 0xfcf01368

#define XUSB_PADCTL_USB2_VBUS_ID 0xc60
#define XUSB_PADCTL_USB2_VBUS_ID_OVERRIDE_VBUS_ON (1 << 14)
#define XUSB_PADCTL_USB2_VBUS_ID_OVERRIDE_SHIFT 18
#define XUSB_PADCTL_USB2_VBUS_ID_OVERRIDE_MASK 0xf
#define XUSB_PADCTL_USB2_VBUS_ID_OVERRIDE_FLOATING 8
#define XUSB_PADCTL_USB2_VBUS_ID_OVERRIDE_GROUNDED 0

struct tegra210_xusb_fuse_calibration {
        u32 hs_curr_level[4];
        u32 hs_term_range_adj;
        u32 rpd_ctrl;
};

struct tegra210_xusb_padctl {
        struct tegra_xusb_padctl base;

        struct tegra210_xusb_fuse_calibration fuse;
};

static inline struct tegra210_xusb_padctl *
to_tegra210_xusb_padctl(struct tegra_xusb_padctl *padctl)
{
        return container_of(padctl, struct tegra210_xusb_padctl, base);
}

/* must be called under padctl->lock */
static int tegra210_pex_uphy_enable(struct tegra_xusb_padctl *padctl)
{
        struct tegra_xusb_pcie_pad *pcie = to_pcie_pad(padctl->pcie);
        unsigned long timeout;
        u32 value;
        int err;

        if (pcie->enable > 0) {
                pcie->enable++;
                return 0;
        }

        err = clk_prepare_enable(pcie->pll);
        if (err < 0)
                return err;

        err = reset_control_deassert(pcie->rst);
        if (err < 0)
                goto disable;

        value = padctl_readl(padctl, XUSB_PADCTL_UPHY_PLL_P0_CTL2);
        value &= ~(XUSB_PADCTL_UPHY_PLL_CTL2_CAL_CTRL_MASK <<
                   XUSB_PADCTL_UPHY_PLL_CTL2_CAL_CTRL_SHIFT);
        value |= XUSB_PADCTL_UPHY_PLL_CTL2_CAL_CTRL_VAL <<
                 XUSB_PADCTL_UPHY_PLL_CTL2_CAL_CTRL_SHIFT;
        padctl_writel(padctl, value, XUSB_PADCTL_UPHY_PLL_P0_CTL2);

        value = padctl_readl(padctl, XUSB_PADCTL_UPHY_PLL_P0_CTL5);
        value &= ~(XUSB_PADCTL_UPHY_PLL_CTL5_DCO_CTRL_MASK <<
                   XUSB_PADCTL_UPHY_PLL_CTL5_DCO_CTRL_SHIFT);
        value |= XUSB_PADCTL_UPHY_PLL_CTL5_DCO_CTRL_VAL <<
                 XUSB_PADCTL_UPHY_PLL_CTL5_DCO_CTRL_SHIFT;
        padctl_writel(padctl, value, XUSB_PADCTL_UPHY_PLL_P0_CTL5);

        value = padctl_readl(padctl, XUSB_PADCTL_UPHY_PLL_P0_CTL1);
        value |= XUSB_PADCTL_UPHY_PLL_CTL1_PWR_OVRD;
        padctl_writel(padctl, value, XUSB_PADCTL_UPHY_PLL_P0_CTL1);

        value = padctl_readl(padctl, XUSB_PADCTL_UPHY_PLL_P0_CTL2);
        value |= XUSB_PADCTL_UPHY_PLL_CTL2_CAL_OVRD;
        padctl_writel(padctl, value, XUSB_PADCTL_UPHY_PLL_P0_CTL2);

        value = padctl_readl(padctl, XUSB_PADCTL_UPHY_PLL_P0_CTL8);
        value |= XUSB_PADCTL_UPHY_PLL_CTL8_RCAL_OVRD;
        padctl_writel(padctl, value, XUSB_PADCTL_UPHY_PLL_P0_CTL8);

        value = padctl_readl(padctl, XUSB_PADCTL_UPHY_PLL_P0_CTL4);
        value &= ~((XUSB_PADCTL_UPHY_PLL_CTL4_TXCLKREF_SEL_MASK <<
                    XUSB_PADCTL_UPHY_PLL_CTL4_TXCLKREF_SEL_SHIFT) |
                   (XUSB_PADCTL_UPHY_PLL_CTL4_REFCLK_SEL_MASK <<
                    XUSB_PADCTL_UPHY_PLL_CTL4_REFCLK_SEL_SHIFT));
        value |= (XUSB_PADCTL_UPHY_PLL_CTL4_TXCLKREF_SEL_USB_VAL <<
                  XUSB_PADCTL_UPHY_PLL_CTL4_TXCLKREF_SEL_SHIFT) |
                 XUSB_PADCTL_UPHY_PLL_CTL4_TXCLKREF_EN;
        padctl_writel(padctl, value, XUSB_PADCTL_UPHY_PLL_P0_CTL4);

        value = padctl_readl(padctl, XUSB_PADCTL_UPHY_PLL_P0_CTL1);
        value &= ~((XUSB_PADCTL_UPHY_PLL_CTL1_FREQ_MDIV_MASK <<
                    XUSB_PADCTL_UPHY_PLL_CTL1_FREQ_MDIV_SHIFT) |
                   (XUSB_PADCTL_UPHY_PLL_CTL1_FREQ_NDIV_MASK <<
                    XUSB_PADCTL_UPHY_PLL_CTL1_FREQ_NDIV_SHIFT));
        value |= XUSB_PADCTL_UPHY_PLL_CTL1_FREQ_NDIV_USB_VAL <<
                 XUSB_PADCTL_UPHY_PLL_CTL1_FREQ_NDIV_SHIFT;
        padctl_writel(padctl, value, XUSB_PADCTL_UPHY_PLL_P0_CTL1);

        value = padctl_readl(padctl, XUSB_PADCTL_UPHY_PLL_P0_CTL1);
        value &= ~XUSB_PADCTL_UPHY_PLL_CTL1_IDDQ;
        padctl_writel(padctl, value, XUSB_PADCTL_UPHY_PLL_P0_CTL1);

        value = padctl_readl(padctl, XUSB_PADCTL_UPHY_PLL_P0_CTL1);
        value &= ~(XUSB_PADCTL_UPHY_PLL_CTL1_SLEEP_MASK <<
                   XUSB_PADCTL_UPHY_PLL_CTL1_SLEEP_SHIFT);
        padctl_writel(padctl, value, XUSB_PADCTL_UPHY_PLL_P0_CTL1);

        usleep_range(10, 20);

        value = padctl_readl(padctl, XUSB_PADCTL_UPHY_PLL_P0_CTL4);
        value |= XUSB_PADCTL_UPHY_PLL_CTL4_REFCLKBUF_EN;
        padctl_writel(padctl, value, XUSB_PADCTL_UPHY_PLL_P0_CTL4);

        value = padctl_readl(padctl, XUSB_PADCTL_UPHY_PLL_P0_CTL2);
        value |= XUSB_PADCTL_UPHY_PLL_CTL2_CAL_EN;
        padctl_writel(padctl, value, XUSB_PADCTL_UPHY_PLL_P0_CTL2);

        timeout = jiffies + msecs_to_jiffies(100);

        while (time_before(jiffies, timeout)) {
                value = padctl_readl(padctl, XUSB_PADCTL_UPHY_PLL_P0_CTL2);
                if (value & XUSB_PADCTL_UPHY_PLL_CTL2_CAL_DONE)
                        break;

                usleep_range(10, 20);
        }

        if (time_after_eq(jiffies, timeout)) {
                err = -ETIMEDOUT;
                goto reset;
        }

        value = padctl_readl(padctl, XUSB_PADCTL_UPHY_PLL_P0_CTL2);
        value &= ~XUSB_PADCTL_UPHY_PLL_CTL2_CAL_EN;
        padctl_writel(padctl, value, XUSB_PADCTL_UPHY_PLL_P0_CTL2);

        timeout = jiffies + msecs_to_jiffies(100);

        while (time_before(jiffies, timeout)) {
                value = padctl_readl(padctl, XUSB_PADCTL_UPHY_PLL_P0_CTL2);
                if (!(value & XUSB_PADCTL_UPHY_PLL_CTL2_CAL_DONE))
                        break;

                usleep_range(10, 20);
        }

        if (time_after_eq(jiffies, timeout)) {
                err = -ETIMEDOUT;
                goto reset;
        }

        value = padctl_readl(padctl, XUSB_PADCTL_UPHY_PLL_P0_CTL1);
        value |= XUSB_PADCTL_UPHY_PLL_CTL1_ENABLE;
        padctl_writel(padctl, value, XUSB_PADCTL_UPHY_PLL_P0_CTL1);

        timeout = jiffies + msecs_to_jiffies(100);

        while (time_before(jiffies, timeout)) {
                value = padctl_readl(padctl, XUSB_PADCTL_UPHY_PLL_P0_CTL1);
                if (value & XUSB_PADCTL_UPHY_PLL_CTL1_LOCKDET_STATUS)
                        break;

                usleep_range(10, 20);
        }

        if (time_after_eq(jiffies, timeout)) {
                err = -ETIMEDOUT;
                goto reset;
        }

        value = padctl_readl(padctl, XUSB_PADCTL_UPHY_PLL_P0_CTL8);
        value |= XUSB_PADCTL_UPHY_PLL_CTL8_RCAL_EN |
                 XUSB_PADCTL_UPHY_PLL_CTL8_RCAL_CLK_EN;
        padctl_writel(padctl, value, XUSB_PADCTL_UPHY_PLL_P0_CTL8);

        timeout = jiffies + msecs_to_jiffies(100);

        while (time_before(jiffies, timeout)) {
                value = padctl_readl(padctl, XUSB_PADCTL_UPHY_PLL_P0_CTL8);
                if (value & XUSB_PADCTL_UPHY_PLL_CTL8_RCAL_DONE)
                        break;

                usleep_range(10, 20);
        }

        if (time_after_eq(jiffies, timeout)) {
                err = -ETIMEDOUT;
                goto reset;
        }

        value = padctl_readl(padctl, XUSB_PADCTL_UPHY_PLL_P0_CTL8);
        value &= ~XUSB_PADCTL_UPHY_PLL_CTL8_RCAL_EN;
        padctl_writel(padctl, value, XUSB_PADCTL_UPHY_PLL_P0_CTL8);

        timeout = jiffies + msecs_to_jiffies(100);

        while (time_before(jiffies, timeout)) {
                value = padctl_readl(padctl, XUSB_PADCTL_UPHY_PLL_P0_CTL8);
                if (!(value & XUSB_PADCTL_UPHY_PLL_CTL8_RCAL_DONE))
                        break;

                usleep_range(10, 20);
        }

        if (time_after_eq(jiffies, timeout)) {
                err = -ETIMEDOUT;
                goto reset;
        }

        value = padctl_readl(padctl, XUSB_PADCTL_UPHY_PLL_P0_CTL8);
        value &= ~XUSB_PADCTL_UPHY_PLL_CTL8_RCAL_CLK_EN;
        padctl_writel(padctl, value, XUSB_PADCTL_UPHY_PLL_P0_CTL8);

        tegra210_xusb_pll_hw_control_enable();

        value = padctl_readl(padctl, XUSB_PADCTL_UPHY_PLL_P0_CTL1);
        value &= ~XUSB_PADCTL_UPHY_PLL_CTL1_PWR_OVRD;
        padctl_writel(padctl, value, XUSB_PADCTL_UPHY_PLL_P0_CTL1);

        value = padctl_readl(padctl, XUSB_PADCTL_UPHY_PLL_P0_CTL2);
        value &= ~XUSB_PADCTL_UPHY_PLL_CTL2_CAL_OVRD;
        padctl_writel(padctl, value, XUSB_PADCTL_UPHY_PLL_P0_CTL2);

        value = padctl_readl(padctl, XUSB_PADCTL_UPHY_PLL_P0_CTL8);
        value &= ~XUSB_PADCTL_UPHY_PLL_CTL8_RCAL_OVRD;
        padctl_writel(padctl, value, XUSB_PADCTL_UPHY_PLL_P0_CTL8);

        usleep_range(10, 20);

        tegra210_xusb_pll_hw_sequence_start();

        pcie->enable++;

        return 0;

reset:
        reset_control_assert(pcie->rst);
disable:
        clk_disable_unprepare(pcie->pll);
        return err;
}

static void tegra210_pex_uphy_disable(struct tegra_xusb_padctl *padctl)
{
        struct tegra_xusb_pcie_pad *pcie = to_pcie_pad(padctl->pcie);

        mutex_lock(&padctl->lock);

        if (WARN_ON(pcie->enable == 0))
                goto unlock;

        if (--pcie->enable > 0)
                goto unlock;

        reset_control_assert(pcie->rst);
        clk_disable_unprepare(pcie->pll);

unlock:
        mutex_unlock(&padctl->lock);
}

/* must be called under padctl->lock */
static int tegra210_sata_uphy_enable(struct tegra_xusb_padctl *padctl, bool usb)
{
        struct tegra_xusb_sata_pad *sata = to_sata_pad(padctl->sata);
        unsigned long timeout;
        u32 value;
        int err;

        if (sata->enable > 0) {
                sata->enable++;
                return 0;
        }

        err = clk_prepare_enable(sata->pll);
        if (err < 0)
                return err;

        err = reset_control_deassert(sata->rst);
        if (err < 0)
                goto disable;

        value = padctl_readl(padctl, XUSB_PADCTL_UPHY_PLL_S0_CTL2);
        value &= ~(XUSB_PADCTL_UPHY_PLL_CTL2_CAL_CTRL_MASK <<
                   XUSB_PADCTL_UPHY_PLL_CTL2_CAL_CTRL_SHIFT);
        value |= XUSB_PADCTL_UPHY_PLL_CTL2_CAL_CTRL_VAL <<
                 XUSB_PADCTL_UPHY_PLL_CTL2_CAL_CTRL_SHIFT;
        padctl_writel(padctl, value, XUSB_PADCTL_UPHY_PLL_S0_CTL2);

        value = padctl_readl(padctl, XUSB_PADCTL_UPHY_PLL_S0_CTL5);
        value &= ~(XUSB_PADCTL_UPHY_PLL_CTL5_DCO_CTRL_MASK <<
                   XUSB_PADCTL_UPHY_PLL_CTL5_DCO_CTRL_SHIFT);
        value |= XUSB_PADCTL_UPHY_PLL_CTL5_DCO_CTRL_VAL <<
                 XUSB_PADCTL_UPHY_PLL_CTL5_DCO_CTRL_SHIFT;
        padctl_writel(padctl, value, XUSB_PADCTL_UPHY_PLL_S0_CTL5);

        value = padctl_readl(padctl, XUSB_PADCTL_UPHY_PLL_S0_CTL1);
        value |= XUSB_PADCTL_UPHY_PLL_CTL1_PWR_OVRD;
        padctl_writel(padctl, value, XUSB_PADCTL_UPHY_PLL_S0_CTL1);

        value = padctl_readl(padctl, XUSB_PADCTL_UPHY_PLL_S0_CTL2);
        value |= XUSB_PADCTL_UPHY_PLL_CTL2_CAL_OVRD;
        padctl_writel(padctl, value, XUSB_PADCTL_UPHY_PLL_S0_CTL2);

        value = padctl_readl(padctl, XUSB_PADCTL_UPHY_PLL_S0_CTL8);
        value |= XUSB_PADCTL_UPHY_PLL_CTL8_RCAL_OVRD;
        padctl_writel(padctl, value, XUSB_PADCTL_UPHY_PLL_S0_CTL8);

        value = padctl_readl(padctl, XUSB_PADCTL_UPHY_PLL_S0_CTL4);
        value &= ~((XUSB_PADCTL_UPHY_PLL_CTL4_TXCLKREF_SEL_MASK <<
                    XUSB_PADCTL_UPHY_PLL_CTL4_TXCLKREF_SEL_SHIFT) |
                   (XUSB_PADCTL_UPHY_PLL_CTL4_REFCLK_SEL_MASK <<
                    XUSB_PADCTL_UPHY_PLL_CTL4_REFCLK_SEL_SHIFT));
        value |= XUSB_PADCTL_UPHY_PLL_CTL4_TXCLKREF_EN;

        if (usb)
                value |= (XUSB_PADCTL_UPHY_PLL_CTL4_TXCLKREF_SEL_USB_VAL <<
                          XUSB_PADCTL_UPHY_PLL_CTL4_TXCLKREF_SEL_SHIFT);
        else
                value |= (XUSB_PADCTL_UPHY_PLL_CTL4_TXCLKREF_SEL_SATA_VAL <<
                          XUSB_PADCTL_UPHY_PLL_CTL4_TXCLKREF_SEL_SHIFT);

        value &= ~XUSB_PADCTL_UPHY_PLL_CTL4_XDIGCLK_EN;
        padctl_writel(padctl, value, XUSB_PADCTL_UPHY_PLL_S0_CTL4);

        value = padctl_readl(padctl, XUSB_PADCTL_UPHY_PLL_S0_CTL1);
        value &= ~((XUSB_PADCTL_UPHY_PLL_CTL1_FREQ_MDIV_MASK <<
                    XUSB_PADCTL_UPHY_PLL_CTL1_FREQ_MDIV_SHIFT) |
                   (XUSB_PADCTL_UPHY_PLL_CTL1_FREQ_NDIV_MASK <<
                    XUSB_PADCTL_UPHY_PLL_CTL1_FREQ_NDIV_SHIFT));

        if (usb)
                value |= XUSB_PADCTL_UPHY_PLL_CTL1_FREQ_NDIV_USB_VAL <<
                         XUSB_PADCTL_UPHY_PLL_CTL1_FREQ_NDIV_SHIFT;
        else
                value |= XUSB_PADCTL_UPHY_PLL_CTL1_FREQ_NDIV_SATA_VAL <<
                         XUSB_PADCTL_UPHY_PLL_CTL1_FREQ_NDIV_SHIFT;

        padctl_writel(padctl, value, XUSB_PADCTL_UPHY_PLL_S0_CTL1);

        value = padctl_readl(padctl, XUSB_PADCTL_UPHY_PLL_S0_CTL1);
        value &= ~XUSB_PADCTL_UPHY_PLL_CTL1_IDDQ;
        padctl_writel(padctl, value, XUSB_PADCTL_UPHY_PLL_S0_CTL1);

        value = padctl_readl(padctl, XUSB_PADCTL_UPHY_PLL_S0_CTL1);
        value &= ~(XUSB_PADCTL_UPHY_PLL_CTL1_SLEEP_MASK <<
                   XUSB_PADCTL_UPHY_PLL_CTL1_SLEEP_SHIFT);
        padctl_writel(padctl, value, XUSB_PADCTL_UPHY_PLL_S0_CTL1);

        usleep_range(10, 20);

        value = padctl_readl(padctl, XUSB_PADCTL_UPHY_PLL_S0_CTL4);
        value |= XUSB_PADCTL_UPHY_PLL_CTL4_REFCLKBUF_EN;
        padctl_writel(padctl, value, XUSB_PADCTL_UPHY_PLL_S0_CTL4);

        value = padctl_readl(padctl, XUSB_PADCTL_UPHY_PLL_S0_CTL2);
        value |= XUSB_PADCTL_UPHY_PLL_CTL2_CAL_EN;
        padctl_writel(padctl, value, XUSB_PADCTL_UPHY_PLL_S0_CTL2);

        timeout = jiffies + msecs_to_jiffies(100);

        while (time_before(jiffies, timeout)) {
                value = padctl_readl(padctl, XUSB_PADCTL_UPHY_PLL_S0_CTL2);
                if (value & XUSB_PADCTL_UPHY_PLL_CTL2_CAL_DONE)
                        break;

                usleep_range(10, 20);
        }

        if (time_after_eq(jiffies, timeout)) {
                err = -ETIMEDOUT;
                goto reset;
        }

        value = padctl_readl(padctl, XUSB_PADCTL_UPHY_PLL_S0_CTL2);
        value &= ~XUSB_PADCTL_UPHY_PLL_CTL2_CAL_EN;
        padctl_writel(padctl, value, XUSB_PADCTL_UPHY_PLL_S0_CTL2);

        timeout = jiffies + msecs_to_jiffies(100);

        while (time_before(jiffies, timeout)) {
                value = padctl_readl(padctl, XUSB_PADCTL_UPHY_PLL_S0_CTL2);
                if (!(value & XUSB_PADCTL_UPHY_PLL_CTL2_CAL_DONE))
                        break;

                usleep_range(10, 20);
        }

        if (time_after_eq(jiffies, timeout)) {
                err = -ETIMEDOUT;
                goto reset;
        }

        value = padctl_readl(padctl, XUSB_PADCTL_UPHY_PLL_S0_CTL1);
        value |= XUSB_PADCTL_UPHY_PLL_CTL1_ENABLE;
        padctl_writel(padctl, value, XUSB_PADCTL_UPHY_PLL_S0_CTL1);

        timeout = jiffies + msecs_to_jiffies(100);

        while (time_before(jiffies, timeout)) {
                value = padctl_readl(padctl, XUSB_PADCTL_UPHY_PLL_S0_CTL1);
                if (value & XUSB_PADCTL_UPHY_PLL_CTL1_LOCKDET_STATUS)
                        break;

                usleep_range(10, 20);
        }

        if (time_after_eq(jiffies, timeout)) {
                err = -ETIMEDOUT;
                goto reset;
        }

        value = padctl_readl(padctl, XUSB_PADCTL_UPHY_PLL_S0_CTL8);
        value |= XUSB_PADCTL_UPHY_PLL_CTL8_RCAL_EN |
                 XUSB_PADCTL_UPHY_PLL_CTL8_RCAL_CLK_EN;
        padctl_writel(padctl, value, XUSB_PADCTL_UPHY_PLL_S0_CTL8);

        timeout = jiffies + msecs_to_jiffies(100);

        while (time_before(jiffies, timeout)) {
                value = padctl_readl(padctl, XUSB_PADCTL_UPHY_PLL_S0_CTL8);
                if (value & XUSB_PADCTL_UPHY_PLL_CTL8_RCAL_DONE)
                        break;

                usleep_range(10, 20);
        }

        if (time_after_eq(jiffies, timeout)) {
                err = -ETIMEDOUT;
                goto reset;
        }

        value = padctl_readl(padctl, XUSB_PADCTL_UPHY_PLL_S0_CTL8);
        value &= ~XUSB_PADCTL_UPHY_PLL_CTL8_RCAL_EN;
        padctl_writel(padctl, value, XUSB_PADCTL_UPHY_PLL_S0_CTL8);

        timeout = jiffies + msecs_to_jiffies(100);

        while (time_before(jiffies, timeout)) {
                value = padctl_readl(padctl, XUSB_PADCTL_UPHY_PLL_S0_CTL8);
                if (!(value & XUSB_PADCTL_UPHY_PLL_CTL8_RCAL_DONE))
                        break;

                usleep_range(10, 20);
        }

        if (time_after_eq(jiffies, timeout)) {
                err = -ETIMEDOUT;
                goto reset;
        }

        value = padctl_readl(padctl, XUSB_PADCTL_UPHY_PLL_S0_CTL8);
        value &= ~XUSB_PADCTL_UPHY_PLL_CTL8_RCAL_CLK_EN;
        padctl_writel(padctl, value, XUSB_PADCTL_UPHY_PLL_S0_CTL8);

        tegra210_sata_pll_hw_control_enable();

        value = padctl_readl(padctl, XUSB_PADCTL_UPHY_PLL_S0_CTL1);
        value &= ~XUSB_PADCTL_UPHY_PLL_CTL1_PWR_OVRD;
        padctl_writel(padctl, value, XUSB_PADCTL_UPHY_PLL_S0_CTL1);

        value = padctl_readl(padctl, XUSB_PADCTL_UPHY_PLL_S0_CTL2);
        value &= ~XUSB_PADCTL_UPHY_PLL_CTL2_CAL_OVRD;
        padctl_writel(padctl, value, XUSB_PADCTL_UPHY_PLL_S0_CTL2);

        value = padctl_readl(padctl, XUSB_PADCTL_UPHY_PLL_S0_CTL8);
        value &= ~XUSB_PADCTL_UPHY_PLL_CTL8_RCAL_OVRD;
        padctl_writel(padctl, value, XUSB_PADCTL_UPHY_PLL_S0_CTL8);

        usleep_range(10, 20);

        tegra210_sata_pll_hw_sequence_start();

        sata->enable++;

        return 0;

reset:
        reset_control_assert(sata->rst);
disable:
        clk_disable_unprepare(sata->pll);
        return err;
}

static void tegra210_sata_uphy_disable(struct tegra_xusb_padctl *padctl)
{
        struct tegra_xusb_sata_pad *sata = to_sata_pad(padctl->sata);

        mutex_lock(&padctl->lock);

        if (WARN_ON(sata->enable == 0))
                goto unlock;

        if (--sata->enable > 0)
                goto unlock;

        reset_control_assert(sata->rst);
        clk_disable_unprepare(sata->pll);

unlock:
        mutex_unlock(&padctl->lock);
}

static int tegra210_xusb_padctl_enable(struct tegra_xusb_padctl *padctl)
{
        u32 value;

        mutex_lock(&padctl->lock);

        if (padctl->enable++ > 0)
                goto out;

        value = padctl_readl(padctl, XUSB_PADCTL_ELPG_PROGRAM1);
        value &= ~XUSB_PADCTL_ELPG_PROGRAM1_AUX_MUX_LP0_CLAMP_EN;
        padctl_writel(padctl, value, XUSB_PADCTL_ELPG_PROGRAM1);

        usleep_range(100, 200);

        value = padctl_readl(padctl, XUSB_PADCTL_ELPG_PROGRAM1);
        value &= ~XUSB_PADCTL_ELPG_PROGRAM1_AUX_MUX_LP0_CLAMP_EN_EARLY;
        padctl_writel(padctl, value, XUSB_PADCTL_ELPG_PROGRAM1);

        usleep_range(100, 200);

        value = padctl_readl(padctl, XUSB_PADCTL_ELPG_PROGRAM1);
        value &= ~XUSB_PADCTL_ELPG_PROGRAM1_AUX_MUX_LP0_VCORE_DOWN;
        padctl_writel(padctl, value, XUSB_PADCTL_ELPG_PROGRAM1);

out:
        mutex_unlock(&padctl->lock);
        return 0;
}

static int tegra210_xusb_padctl_disable(struct tegra_xusb_padctl *padctl)
{
        u32 value;

        mutex_lock(&padctl->lock);

        if (WARN_ON(padctl->enable == 0))
                goto out;

        if (--padctl->enable > 0)
                goto out;

        value = padctl_readl(padctl, XUSB_PADCTL_ELPG_PROGRAM1);
        value |= XUSB_PADCTL_ELPG_PROGRAM1_AUX_MUX_LP0_VCORE_DOWN;
        padctl_writel(padctl, value, XUSB_PADCTL_ELPG_PROGRAM1);

        usleep_range(100, 200);

        value = padctl_readl(padctl, XUSB_PADCTL_ELPG_PROGRAM1);
        value |= XUSB_PADCTL_ELPG_PROGRAM1_AUX_MUX_LP0_CLAMP_EN_EARLY;
        padctl_writel(padctl, value, XUSB_PADCTL_ELPG_PROGRAM1);

        usleep_range(100, 200);

        value = padctl_readl(padctl, XUSB_PADCTL_ELPG_PROGRAM1);
        value |= XUSB_PADCTL_ELPG_PROGRAM1_AUX_MUX_LP0_CLAMP_EN;
        padctl_writel(padctl, value, XUSB_PADCTL_ELPG_PROGRAM1);

out:
        mutex_unlock(&padctl->lock);
        return 0;
}

static int tegra210_hsic_set_idle(struct tegra_xusb_padctl *padctl,
                                  unsigned int index, bool idle)
{
        u32 value;

        value = padctl_readl(padctl, XUSB_PADCTL_HSIC_PADX_CTL0(index));

        value &= ~(XUSB_PADCTL_HSIC_PAD_CTL0_RPU_DATA0 |
                   XUSB_PADCTL_HSIC_PAD_CTL0_RPU_DATA1 |
                   XUSB_PADCTL_HSIC_PAD_CTL0_RPD_STROBE);

        if (idle)
                value |= XUSB_PADCTL_HSIC_PAD_CTL0_RPD_DATA0 |
                         XUSB_PADCTL_HSIC_PAD_CTL0_RPD_DATA1 |
                         XUSB_PADCTL_HSIC_PAD_CTL0_RPU_STROBE;
        else
                value &= ~(XUSB_PADCTL_HSIC_PAD_CTL0_RPD_DATA0 |
                           XUSB_PADCTL_HSIC_PAD_CTL0_RPD_DATA1 |
                           XUSB_PADCTL_HSIC_PAD_CTL0_RPU_STROBE);

        padctl_writel(padctl, value, XUSB_PADCTL_HSIC_PADX_CTL0(index));

        return 0;
}

static int tegra210_usb3_set_lfps_detect(struct tegra_xusb_padctl *padctl,
                                         unsigned int index, bool enable)
{
        struct tegra_xusb_port *port;
        struct tegra_xusb_lane *lane;
        u32 value, offset;

        port = tegra_xusb_find_port(padctl, "usb3", index);
        if (!port)
                return -ENODEV;

        lane = port->lane;

        if (lane->pad == padctl->pcie)
                offset = XUSB_PADCTL_UPHY_MISC_PAD_PX_CTL1(lane->index);
        else
                offset = XUSB_PADCTL_UPHY_MISC_PAD_S0_CTL1;

        value = padctl_readl(padctl, offset);

        value &= ~((XUSB_PADCTL_UPHY_MISC_PAD_CTL1_AUX_RX_IDLE_MODE_MASK <<
                    XUSB_PADCTL_UPHY_MISC_PAD_CTL1_AUX_RX_IDLE_MODE_SHIFT) |
                   XUSB_PADCTL_UPHY_MISC_PAD_CTL1_AUX_RX_TERM_EN |
                   XUSB_PADCTL_UPHY_MISC_PAD_CTL1_AUX_RX_MODE_OVRD);

        if (!enable) {
                value |= (XUSB_PADCTL_UPHY_MISC_PAD_CTL1_AUX_RX_IDLE_MODE_VAL <<
                          XUSB_PADCTL_UPHY_MISC_PAD_CTL1_AUX_RX_IDLE_MODE_SHIFT) |
                         XUSB_PADCTL_UPHY_MISC_PAD_CTL1_AUX_RX_TERM_EN |
                         XUSB_PADCTL_UPHY_MISC_PAD_CTL1_AUX_RX_MODE_OVRD;
        }

        padctl_writel(padctl, value, offset);

        return 0;
}

#define TEGRA210_LANE(_name, _offset, _shift, _mask, _type)             \
        {                                                               \
                .name = _name,                                          \
                .offset = _offset,                                      \
                .shift = _shift,                                        \
                .mask = _mask,                                          \
                .num_funcs = ARRAY_SIZE(tegra210_##_type##_functions),  \
                .funcs = tegra210_##_type##_functions,                  \
        }

static const char *tegra210_usb2_functions[] = {
        "snps",
        "xusb",
        "uart"
};

static const struct tegra_xusb_lane_soc tegra210_usb2_lanes[] = {
        TEGRA210_LANE("usb2-0", 0x004,  0, 0x3, usb2),
        TEGRA210_LANE("usb2-1", 0x004,  2, 0x3, usb2),
        TEGRA210_LANE("usb2-2", 0x004,  4, 0x3, usb2),
        TEGRA210_LANE("usb2-3", 0x004,  6, 0x3, usb2),
};

static struct tegra_xusb_lane *
tegra210_usb2_lane_probe(struct tegra_xusb_pad *pad, struct device_node *np,
                         unsigned int index)
{
        struct tegra_xusb_usb2_lane *usb2;
        int err;

        usb2 = kzalloc(sizeof(*usb2), GFP_KERNEL);
        if (!usb2)
                return ERR_PTR(-ENOMEM);

        INIT_LIST_HEAD(&usb2->base.list);
        usb2->base.soc = &pad->soc->lanes[index];
        usb2->base.index = index;
        usb2->base.pad = pad;
        usb2->base.np = np;

        err = tegra_xusb_lane_parse_dt(&usb2->base, np);
        if (err < 0) {
                kfree(usb2);
                return ERR_PTR(err);
        }

        return &usb2->base;
}

static void tegra210_usb2_lane_remove(struct tegra_xusb_lane *lane)
{
        struct tegra_xusb_usb2_lane *usb2 = to_usb2_lane(lane);

        kfree(usb2);
}

static const struct tegra_xusb_lane_ops tegra210_usb2_lane_ops = {
        .probe = tegra210_usb2_lane_probe,
        .remove = tegra210_usb2_lane_remove,
};

static int tegra210_usb2_phy_init(struct phy *phy)
{
        struct tegra_xusb_lane *lane = phy_get_drvdata(phy);
        struct tegra_xusb_padctl *padctl = lane->pad->padctl;
        u32 value;

        value = padctl_readl(padctl, XUSB_PADCTL_USB2_PAD_MUX);
        value &= ~(XUSB_PADCTL_USB2_PAD_MUX_USB2_BIAS_PAD_MASK <<
                   XUSB_PADCTL_USB2_PAD_MUX_USB2_BIAS_PAD_SHIFT);
        value |= XUSB_PADCTL_USB2_PAD_MUX_USB2_BIAS_PAD_XUSB <<
                 XUSB_PADCTL_USB2_PAD_MUX_USB2_BIAS_PAD_SHIFT;
        padctl_writel(padctl, value, XUSB_PADCTL_USB2_PAD_MUX);

        return tegra210_xusb_padctl_enable(padctl);
}

static int tegra210_usb2_phy_exit(struct phy *phy)
{
        struct tegra_xusb_lane *lane = phy_get_drvdata(phy);

        return tegra210_xusb_padctl_disable(lane->pad->padctl);
}

static int tegra210_xusb_padctl_vbus_override(struct tegra_xusb_padctl *padctl,
                                              bool status)
{
        u32 value;

        dev_dbg(padctl->dev, "%s vbus override\n", status ? "set" : "clear");

        value = padctl_readl(padctl, XUSB_PADCTL_USB2_VBUS_ID);

        if (status) {
                value |= XUSB_PADCTL_USB2_VBUS_ID_OVERRIDE_VBUS_ON;
                value &= ~(XUSB_PADCTL_USB2_VBUS_ID_OVERRIDE_MASK <<
                           XUSB_PADCTL_USB2_VBUS_ID_OVERRIDE_SHIFT);
                value |= XUSB_PADCTL_USB2_VBUS_ID_OVERRIDE_FLOATING <<
                         XUSB_PADCTL_USB2_VBUS_ID_OVERRIDE_SHIFT;
        } else {
                value &= ~XUSB_PADCTL_USB2_VBUS_ID_OVERRIDE_VBUS_ON;
        }

        padctl_writel(padctl, value, XUSB_PADCTL_USB2_VBUS_ID);

        return 0;
}

static int tegra210_xusb_padctl_id_override(struct tegra_xusb_padctl *padctl,
                                            bool status)
{
        u32 value;

        dev_dbg(padctl->dev, "%s id override\n", status ? "set" : "clear");

        value = padctl_readl(padctl, XUSB_PADCTL_USB2_VBUS_ID);

        if (status) {
                if (value & XUSB_PADCTL_USB2_VBUS_ID_OVERRIDE_VBUS_ON) {
                        value &= ~XUSB_PADCTL_USB2_VBUS_ID_OVERRIDE_VBUS_ON;
                        padctl_writel(padctl, value, XUSB_PADCTL_USB2_VBUS_ID);
                        usleep_range(1000, 2000);

                        value = padctl_readl(padctl, XUSB_PADCTL_USB2_VBUS_ID);
                }

                value &= ~(XUSB_PADCTL_USB2_VBUS_ID_OVERRIDE_MASK <<
                           XUSB_PADCTL_USB2_VBUS_ID_OVERRIDE_SHIFT);
                value |= XUSB_PADCTL_USB2_VBUS_ID_OVERRIDE_GROUNDED <<
                         XUSB_PADCTL_USB2_VBUS_ID_OVERRIDE_SHIFT;
        } else {
                value &= ~(XUSB_PADCTL_USB2_VBUS_ID_OVERRIDE_MASK <<
                           XUSB_PADCTL_USB2_VBUS_ID_OVERRIDE_SHIFT);
                value |= XUSB_PADCTL_USB2_VBUS_ID_OVERRIDE_FLOATING <<
                         XUSB_PADCTL_USB2_VBUS_ID_OVERRIDE_SHIFT;
        }

        padctl_writel(padctl, value, XUSB_PADCTL_USB2_VBUS_ID);

        return 0;
}

static int tegra210_usb2_phy_set_mode(struct phy *phy, enum phy_mode mode,
                                      int submode)
{
        struct tegra_xusb_lane *lane = phy_get_drvdata(phy);

        struct tegra_xusb_padctl *padctl = lane->pad->padctl;
        struct tegra_xusb_usb2_port *port = tegra_xusb_find_usb2_port(padctl,
                                                                lane->index);
        int err = 0;

        mutex_lock(&padctl->lock);

        dev_dbg(&port->base.dev, "%s: mode %d", __func__, mode);

        if (mode == PHY_MODE_USB_OTG) {
                if (submode == USB_ROLE_HOST) {
                        tegra210_xusb_padctl_id_override(padctl, true);

                        err = regulator_enable(port->supply);
                } else if (submode == USB_ROLE_DEVICE) {
                        tegra210_xusb_padctl_vbus_override(padctl, true);
                } else if (submode == USB_ROLE_NONE) {
                        /*
                         * When port is peripheral only or role transitions to
                         * USB_ROLE_NONE from USB_ROLE_DEVICE, regulator is not
                         * be enabled.
                         */
                        if (regulator_is_enabled(port->supply))
                                regulator_disable(port->supply);

                        tegra210_xusb_padctl_id_override(padctl, false);
                        tegra210_xusb_padctl_vbus_override(padctl, false);
                }
        }

        mutex_unlock(&padctl->lock);

        return err;
}

static int tegra210_usb2_phy_power_on(struct phy *phy)
{
        struct tegra_xusb_lane *lane = phy_get_drvdata(phy);
        struct tegra_xusb_usb2_lane *usb2 = to_usb2_lane(lane);
        struct tegra_xusb_usb2_pad *pad = to_usb2_pad(lane->pad);
        struct tegra_xusb_padctl *padctl = lane->pad->padctl;
        struct tegra210_xusb_padctl *priv;
        struct tegra_xusb_usb2_port *port;
        unsigned int index = lane->index;
        u32 value;
        int err;

        port = tegra_xusb_find_usb2_port(padctl, index);
        if (!port) {
                dev_err(&phy->dev, "no port found for USB2 lane %u\n", index);
                return -ENODEV;
        }

        priv = to_tegra210_xusb_padctl(padctl);

        if (port->usb3_port_fake != -1) {
                value = padctl_readl(padctl, XUSB_PADCTL_SS_PORT_MAP);
                value &= ~XUSB_PADCTL_SS_PORT_MAP_PORTX_MAP_MASK(
                                        port->usb3_port_fake);
                value |= XUSB_PADCTL_SS_PORT_MAP_PORTX_MAP(
                                        port->usb3_port_fake, index);
                padctl_writel(padctl, value, XUSB_PADCTL_SS_PORT_MAP);

                value = padctl_readl(padctl, XUSB_PADCTL_ELPG_PROGRAM1);
                value &= ~XUSB_PADCTL_ELPG_PROGRAM1_SSPX_ELPG_VCORE_DOWN(
                                        port->usb3_port_fake);
                padctl_writel(padctl, value, XUSB_PADCTL_ELPG_PROGRAM1);

                usleep_range(100, 200);

                value = padctl_readl(padctl, XUSB_PADCTL_ELPG_PROGRAM1);
                value &= ~XUSB_PADCTL_ELPG_PROGRAM1_SSPX_ELPG_CLAMP_EN_EARLY(
                                        port->usb3_port_fake);
                padctl_writel(padctl, value, XUSB_PADCTL_ELPG_PROGRAM1);

                usleep_range(100, 200);

                value = padctl_readl(padctl, XUSB_PADCTL_ELPG_PROGRAM1);
                value &= ~XUSB_PADCTL_ELPG_PROGRAM1_SSPX_ELPG_CLAMP_EN(
                                        port->usb3_port_fake);
                padctl_writel(padctl, value, XUSB_PADCTL_ELPG_PROGRAM1);
        }

        value = padctl_readl(padctl, XUSB_PADCTL_USB2_BIAS_PAD_CTL0);
        value &= ~((XUSB_PADCTL_USB2_BIAS_PAD_CTL0_HS_SQUELCH_LEVEL_MASK <<
                    XUSB_PADCTL_USB2_BIAS_PAD_CTL0_HS_SQUELCH_LEVEL_SHIFT) |
                   (XUSB_PADCTL_USB2_BIAS_PAD_CTL0_HS_DISCON_LEVEL_MASK <<
                    XUSB_PADCTL_USB2_BIAS_PAD_CTL0_HS_DISCON_LEVEL_SHIFT));
        value |= (XUSB_PADCTL_USB2_BIAS_PAD_CTL0_HS_DISCON_LEVEL_VAL <<
                  XUSB_PADCTL_USB2_BIAS_PAD_CTL0_HS_DISCON_LEVEL_SHIFT);

        if (tegra_sku_info.revision < TEGRA_REVISION_A02)
                value |=
                        (XUSB_PADCTL_USB2_BIAS_PAD_CTL0_HS_SQUELCH_LEVEL_VAL <<
                        XUSB_PADCTL_USB2_BIAS_PAD_CTL0_HS_SQUELCH_LEVEL_SHIFT);

        padctl_writel(padctl, value, XUSB_PADCTL_USB2_BIAS_PAD_CTL0);

        value = padctl_readl(padctl, XUSB_PADCTL_USB2_PORT_CAP);
        value &= ~XUSB_PADCTL_USB2_PORT_CAP_PORTX_CAP_MASK(index);
        if (port->mode == USB_DR_MODE_UNKNOWN)
                value |= XUSB_PADCTL_USB2_PORT_CAP_PORTX_CAP_DISABLED(index);
        else if (port->mode == USB_DR_MODE_PERIPHERAL)
                value |= XUSB_PADCTL_USB2_PORT_CAP_PORTX_CAP_DEVICE(index);
        else if (port->mode == USB_DR_MODE_HOST)
                value |= XUSB_PADCTL_USB2_PORT_CAP_PORTX_CAP_HOST(index);
        else if (port->mode == USB_DR_MODE_OTG)
                value |= XUSB_PADCTL_USB2_PORT_CAP_PORTX_CAP_OTG(index);
        padctl_writel(padctl, value, XUSB_PADCTL_USB2_PORT_CAP);

        value = padctl_readl(padctl, XUSB_PADCTL_USB2_OTG_PADX_CTL0(index));
        value &= ~((XUSB_PADCTL_USB2_OTG_PAD_CTL0_HS_CURR_LEVEL_MASK <<
                    XUSB_PADCTL_USB2_OTG_PAD_CTL0_HS_CURR_LEVEL_SHIFT) |
                   XUSB_PADCTL_USB2_OTG_PAD_CTL0_PD |
                   XUSB_PADCTL_USB2_OTG_PAD_CTL0_PD2 |
                   XUSB_PADCTL_USB2_OTG_PAD_CTL0_PD_ZI);
        value |= (priv->fuse.hs_curr_level[index] +
                  usb2->hs_curr_level_offset) <<
                 XUSB_PADCTL_USB2_OTG_PAD_CTL0_HS_CURR_LEVEL_SHIFT;
        padctl_writel(padctl, value, XUSB_PADCTL_USB2_OTG_PADX_CTL0(index));

        value = padctl_readl(padctl, XUSB_PADCTL_USB2_OTG_PADX_CTL1(index));
        value &= ~((XUSB_PADCTL_USB2_OTG_PAD_CTL1_TERM_RANGE_ADJ_MASK <<
                    XUSB_PADCTL_USB2_OTG_PAD_CTL1_TERM_RANGE_ADJ_SHIFT) |
                   (XUSB_PADCTL_USB2_OTG_PAD_CTL1_RPD_CTRL_MASK <<
                    XUSB_PADCTL_USB2_OTG_PAD_CTL1_RPD_CTRL_SHIFT) |
                   XUSB_PADCTL_USB2_OTG_PAD_CTL1_PD_DR |
                   XUSB_PADCTL_USB2_OTG_PAD_CTL1_PD_CHRP_OVRD |
                   XUSB_PADCTL_USB2_OTG_PAD_CTL1_PD_DISC_OVRD);
        value |= (priv->fuse.hs_term_range_adj <<
                  XUSB_PADCTL_USB2_OTG_PAD_CTL1_TERM_RANGE_ADJ_SHIFT) |
                 (priv->fuse.rpd_ctrl <<
                  XUSB_PADCTL_USB2_OTG_PAD_CTL1_RPD_CTRL_SHIFT);
        padctl_writel(padctl, value, XUSB_PADCTL_USB2_OTG_PADX_CTL1(index));

        value = padctl_readl(padctl,
                             XUSB_PADCTL_USB2_BATTERY_CHRG_OTGPADX_CTL1(index));
        value &= ~(XUSB_PADCTL_USB2_BATTERY_CHRG_OTGPAD_CTL1_VREG_LEV_MASK <<
                   XUSB_PADCTL_USB2_BATTERY_CHRG_OTGPAD_CTL1_VREG_LEV_SHIFT);
        if (port->mode == USB_DR_MODE_HOST)
                value |= XUSB_PADCTL_USB2_BATTERY_CHRG_OTGPAD_CTL1_VREG_FIX18;
        else
                value |=
                      XUSB_PADCTL_USB2_BATTERY_CHRG_OTGPAD_CTL1_VREG_LEV_VAL <<
                      XUSB_PADCTL_USB2_BATTERY_CHRG_OTGPAD_CTL1_VREG_LEV_SHIFT;
        padctl_writel(padctl, value,
                      XUSB_PADCTL_USB2_BATTERY_CHRG_OTGPADX_CTL1(index));

        if (port->supply && port->mode == USB_DR_MODE_HOST) {
                err = regulator_enable(port->supply);
                if (err)
                        return err;
        }

        mutex_lock(&padctl->lock);

        if (pad->enable > 0) {
                pad->enable++;
                mutex_unlock(&padctl->lock);
                return 0;
        }

        err = clk_prepare_enable(pad->clk);
        if (err)
                goto disable_regulator;

        value = padctl_readl(padctl, XUSB_PADCTL_USB2_BIAS_PAD_CTL1);
        value &= ~((XUSB_PADCTL_USB2_BIAS_PAD_CTL1_TRK_START_TIMER_MASK <<
                    XUSB_PADCTL_USB2_BIAS_PAD_CTL1_TRK_START_TIMER_SHIFT) |
                   (XUSB_PADCTL_USB2_BIAS_PAD_CTL1_TRK_DONE_RESET_TIMER_MASK <<
                    XUSB_PADCTL_USB2_BIAS_PAD_CTL1_TRK_DONE_RESET_TIMER_SHIFT));
        value |= (XUSB_PADCTL_USB2_BIAS_PAD_CTL1_TRK_START_TIMER_VAL <<
                  XUSB_PADCTL_USB2_BIAS_PAD_CTL1_TRK_START_TIMER_SHIFT) |
                 (XUSB_PADCTL_USB2_BIAS_PAD_CTL1_TRK_DONE_RESET_TIMER_VAL <<
                  XUSB_PADCTL_USB2_BIAS_PAD_CTL1_TRK_DONE_RESET_TIMER_SHIFT);
        padctl_writel(padctl, value, XUSB_PADCTL_USB2_BIAS_PAD_CTL1);

        value = padctl_readl(padctl, XUSB_PADCTL_USB2_BIAS_PAD_CTL0);
        value &= ~XUSB_PADCTL_USB2_BIAS_PAD_CTL0_PD;
        padctl_writel(padctl, value, XUSB_PADCTL_USB2_BIAS_PAD_CTL0);

        udelay(1);

        value = padctl_readl(padctl, XUSB_PADCTL_USB2_BIAS_PAD_CTL1);
        value &= ~XUSB_PADCTL_USB2_BIAS_PAD_CTL1_PD_TRK;
        padctl_writel(padctl, value, XUSB_PADCTL_USB2_BIAS_PAD_CTL1);

        udelay(50);

        clk_disable_unprepare(pad->clk);

        pad->enable++;
        mutex_unlock(&padctl->lock);

        return 0;

disable_regulator:
        regulator_disable(port->supply);
        mutex_unlock(&padctl->lock);
        return err;
}

static int tegra210_usb2_phy_power_off(struct phy *phy)
{
        struct tegra_xusb_lane *lane = phy_get_drvdata(phy);
        struct tegra_xusb_usb2_pad *pad = to_usb2_pad(lane->pad);
        struct tegra_xusb_padctl *padctl = lane->pad->padctl;
        struct tegra_xusb_usb2_port *port;
        u32 value;

        port = tegra_xusb_find_usb2_port(padctl, lane->index);
        if (!port) {
                dev_err(&phy->dev, "no port found for USB2 lane %u\n",
                        lane->index);
                return -ENODEV;
        }

        mutex_lock(&padctl->lock);

        if (port->usb3_port_fake != -1) {
                value = padctl_readl(padctl, XUSB_PADCTL_ELPG_PROGRAM1);
                value |= XUSB_PADCTL_ELPG_PROGRAM1_SSPX_ELPG_CLAMP_EN_EARLY(
                                        port->usb3_port_fake);
                padctl_writel(padctl, value, XUSB_PADCTL_ELPG_PROGRAM1);

                usleep_range(100, 200);

                value = padctl_readl(padctl, XUSB_PADCTL_ELPG_PROGRAM1);
                value |= XUSB_PADCTL_ELPG_PROGRAM1_SSPX_ELPG_CLAMP_EN(
                                        port->usb3_port_fake);
                padctl_writel(padctl, value, XUSB_PADCTL_ELPG_PROGRAM1);

                usleep_range(250, 350);

                value = padctl_readl(padctl, XUSB_PADCTL_ELPG_PROGRAM1);
                value |= XUSB_PADCTL_ELPG_PROGRAM1_SSPX_ELPG_VCORE_DOWN(
                                        port->usb3_port_fake);
                padctl_writel(padctl, value, XUSB_PADCTL_ELPG_PROGRAM1);

                value = padctl_readl(padctl, XUSB_PADCTL_SS_PORT_MAP);
                value |= XUSB_PADCTL_SS_PORT_MAP_PORTX_MAP(port->usb3_port_fake,
                                        XUSB_PADCTL_SS_PORT_MAP_PORT_DISABLED);
                padctl_writel(padctl, value, XUSB_PADCTL_SS_PORT_MAP);
        }

        if (WARN_ON(pad->enable == 0))
                goto out;

        if (--pad->enable > 0)
                goto out;

        value = padctl_readl(padctl, XUSB_PADCTL_USB2_BIAS_PAD_CTL0);
        value |= XUSB_PADCTL_USB2_BIAS_PAD_CTL0_PD;
        padctl_writel(padctl, value, XUSB_PADCTL_USB2_BIAS_PAD_CTL0);

out:
        regulator_disable(port->supply);
        mutex_unlock(&padctl->lock);
        return 0;
}

static const struct phy_ops tegra210_usb2_phy_ops = {
        .init = tegra210_usb2_phy_init,
        .exit = tegra210_usb2_phy_exit,
        .power_on = tegra210_usb2_phy_power_on,
        .power_off = tegra210_usb2_phy_power_off,
        .set_mode = tegra210_usb2_phy_set_mode,
        .owner = THIS_MODULE,
};

static struct tegra_xusb_pad *
tegra210_usb2_pad_probe(struct tegra_xusb_padctl *padctl,
                        const struct tegra_xusb_pad_soc *soc,
                        struct device_node *np)
{
        struct tegra_xusb_usb2_pad *usb2;
        struct tegra_xusb_pad *pad;
        int err;

        usb2 = kzalloc(sizeof(*usb2), GFP_KERNEL);
        if (!usb2)
                return ERR_PTR(-ENOMEM);

        pad = &usb2->base;
        pad->ops = &tegra210_usb2_lane_ops;
        pad->soc = soc;

        err = tegra_xusb_pad_init(pad, padctl, np);
        if (err < 0) {
                kfree(usb2);
                goto out;
        }

        usb2->clk = devm_clk_get(&pad->dev, "trk");
        if (IS_ERR(usb2->clk)) {
                err = PTR_ERR(usb2->clk);
                dev_err(&pad->dev, "failed to get trk clock: %d\n", err);
                goto unregister;
        }

        err = tegra_xusb_pad_register(pad, &tegra210_usb2_phy_ops);
        if (err < 0)
                goto unregister;

        dev_set_drvdata(&pad->dev, pad);

        return pad;

unregister:
        device_unregister(&pad->dev);
out:
        return ERR_PTR(err);
}

static void tegra210_usb2_pad_remove(struct tegra_xusb_pad *pad)
{
        struct tegra_xusb_usb2_pad *usb2 = to_usb2_pad(pad);

        kfree(usb2);
}

static const struct tegra_xusb_pad_ops tegra210_usb2_ops = {
        .probe = tegra210_usb2_pad_probe,
        .remove = tegra210_usb2_pad_remove,
};

static const struct tegra_xusb_pad_soc tegra210_usb2_pad = {
        .name = "usb2",
        .num_lanes = ARRAY_SIZE(tegra210_usb2_lanes),
        .lanes = tegra210_usb2_lanes,
        .ops = &tegra210_usb2_ops,
};

static const char *tegra210_hsic_functions[] = {
        "snps",
        "xusb",
};

static const struct tegra_xusb_lane_soc tegra210_hsic_lanes[] = {
        TEGRA210_LANE("hsic-0", 0x004, 14, 0x1, hsic),
};

static struct tegra_xusb_lane *
tegra210_hsic_lane_probe(struct tegra_xusb_pad *pad, struct device_node *np,
                         unsigned int index)
{
        struct tegra_xusb_hsic_lane *hsic;
        int err;

        hsic = kzalloc(sizeof(*hsic), GFP_KERNEL);
        if (!hsic)
                return ERR_PTR(-ENOMEM);

        INIT_LIST_HEAD(&hsic->base.list);
        hsic->base.soc = &pad->soc->lanes[index];
        hsic->base.index = index;
        hsic->base.pad = pad;
        hsic->base.np = np;

        err = tegra_xusb_lane_parse_dt(&hsic->base, np);
        if (err < 0) {
                kfree(hsic);
                return ERR_PTR(err);
        }

        return &hsic->base;
}

static void tegra210_hsic_lane_remove(struct tegra_xusb_lane *lane)
{
        struct tegra_xusb_hsic_lane *hsic = to_hsic_lane(lane);

        kfree(hsic);
}

static const struct tegra_xusb_lane_ops tegra210_hsic_lane_ops = {
        .probe = tegra210_hsic_lane_probe,
        .remove = tegra210_hsic_lane_remove,
};

static int tegra210_hsic_phy_init(struct phy *phy)
{
        struct tegra_xusb_lane *lane = phy_get_drvdata(phy);
        struct tegra_xusb_padctl *padctl = lane->pad->padctl;
        u32 value;

        value = padctl_readl(padctl, XUSB_PADCTL_USB2_PAD_MUX);
        value &= ~(XUSB_PADCTL_USB2_PAD_MUX_HSIC_PAD_TRK_MASK <<
                   XUSB_PADCTL_USB2_PAD_MUX_HSIC_PAD_TRK_SHIFT);
        value |= XUSB_PADCTL_USB2_PAD_MUX_HSIC_PAD_TRK_XUSB <<
                 XUSB_PADCTL_USB2_PAD_MUX_HSIC_PAD_TRK_SHIFT;
        padctl_writel(padctl, value, XUSB_PADCTL_USB2_PAD_MUX);

        return tegra210_xusb_padctl_enable(padctl);
}

static int tegra210_hsic_phy_exit(struct phy *phy)
{
        struct tegra_xusb_lane *lane = phy_get_drvdata(phy);

        return tegra210_xusb_padctl_disable(lane->pad->padctl);
}

static int tegra210_hsic_phy_power_on(struct phy *phy)
{
        struct tegra_xusb_lane *lane = phy_get_drvdata(phy);
        struct tegra_xusb_hsic_lane *hsic = to_hsic_lane(lane);
        struct tegra_xusb_hsic_pad *pad = to_hsic_pad(lane->pad);
        struct tegra_xusb_padctl *padctl = lane->pad->padctl;
        unsigned int index = lane->index;
        u32 value;
        int err;

        err = regulator_enable(pad->supply);
        if (err)
                return err;

        padctl_writel(padctl, hsic->strobe_trim,
                      XUSB_PADCTL_HSIC_STRB_TRIM_CONTROL);

        value = padctl_readl(padctl, XUSB_PADCTL_HSIC_PADX_CTL1(index));
        value &= ~(XUSB_PADCTL_HSIC_PAD_CTL1_TX_RTUNEP_MASK <<
                   XUSB_PADCTL_HSIC_PAD_CTL1_TX_RTUNEP_SHIFT);
        value |= (hsic->tx_rtune_p <<
                  XUSB_PADCTL_HSIC_PAD_CTL1_TX_RTUNEP_SHIFT);
        padctl_writel(padctl, value, XUSB_PADCTL_HSIC_PADX_CTL1(index));

        value = padctl_readl(padctl, XUSB_PADCTL_HSIC_PADX_CTL2(index));
        value &= ~((XUSB_PADCTL_HSIC_PAD_CTL2_RX_STROBE_TRIM_MASK <<
                    XUSB_PADCTL_HSIC_PAD_CTL2_RX_STROBE_TRIM_SHIFT) |
                   (XUSB_PADCTL_HSIC_PAD_CTL2_RX_DATA_TRIM_MASK <<
                    XUSB_PADCTL_HSIC_PAD_CTL2_RX_DATA_TRIM_SHIFT));
        value |= (hsic->rx_strobe_trim <<
                  XUSB_PADCTL_HSIC_PAD_CTL2_RX_STROBE_TRIM_SHIFT) |
                 (hsic->rx_data_trim <<
                  XUSB_PADCTL_HSIC_PAD_CTL2_RX_DATA_TRIM_SHIFT);
        padctl_writel(padctl, value, XUSB_PADCTL_HSIC_PADX_CTL2(index));

        value = padctl_readl(padctl, XUSB_PADCTL_HSIC_PADX_CTL0(index));
        value &= ~(XUSB_PADCTL_HSIC_PAD_CTL0_RPU_DATA0 |
                   XUSB_PADCTL_HSIC_PAD_CTL0_RPU_DATA1 |
                   XUSB_PADCTL_HSIC_PAD_CTL0_RPU_STROBE |
                   XUSB_PADCTL_HSIC_PAD_CTL0_PD_RX_DATA0 |
                   XUSB_PADCTL_HSIC_PAD_CTL0_PD_RX_DATA1 |
                   XUSB_PADCTL_HSIC_PAD_CTL0_PD_RX_STROBE |
                   XUSB_PADCTL_HSIC_PAD_CTL0_PD_ZI_DATA0 |
                   XUSB_PADCTL_HSIC_PAD_CTL0_PD_ZI_DATA1 |
                   XUSB_PADCTL_HSIC_PAD_CTL0_PD_ZI_STROBE |
                   XUSB_PADCTL_HSIC_PAD_CTL0_PD_TX_DATA0 |
                   XUSB_PADCTL_HSIC_PAD_CTL0_PD_TX_DATA1 |
                   XUSB_PADCTL_HSIC_PAD_CTL0_PD_TX_STROBE);
        value |= XUSB_PADCTL_HSIC_PAD_CTL0_RPD_DATA0 |
                 XUSB_PADCTL_HSIC_PAD_CTL0_RPD_DATA1 |
                 XUSB_PADCTL_HSIC_PAD_CTL0_RPD_STROBE;
        padctl_writel(padctl, value, XUSB_PADCTL_HSIC_PADX_CTL0(index));

        err = clk_prepare_enable(pad->clk);
        if (err)
                goto disable;

        value = padctl_readl(padctl, XUSB_PADCTL_HSIC_PAD_TRK_CTL);
        value &= ~((XUSB_PADCTL_HSIC_PAD_TRK_CTL_TRK_START_TIMER_MASK <<
                    XUSB_PADCTL_HSIC_PAD_TRK_CTL_TRK_START_TIMER_SHIFT) |
                   (XUSB_PADCTL_HSIC_PAD_TRK_CTL_TRK_DONE_RESET_TIMER_MASK <<
                    XUSB_PADCTL_HSIC_PAD_TRK_CTL_TRK_DONE_RESET_TIMER_SHIFT));
        value |= (XUSB_PADCTL_HSIC_PAD_TRK_CTL_TRK_START_TIMER_VAL <<
                  XUSB_PADCTL_HSIC_PAD_TRK_CTL_TRK_START_TIMER_SHIFT) |
                 (XUSB_PADCTL_HSIC_PAD_TRK_CTL_TRK_DONE_RESET_TIMER_VAL <<
                  XUSB_PADCTL_HSIC_PAD_TRK_CTL_TRK_DONE_RESET_TIMER_SHIFT);
        padctl_writel(padctl, value, XUSB_PADCTL_HSIC_PAD_TRK_CTL);

        udelay(1);

        value = padctl_readl(padctl, XUSB_PADCTL_HSIC_PAD_TRK_CTL);
        value &= ~XUSB_PADCTL_HSIC_PAD_TRK_CTL_PD_TRK;
        padctl_writel(padctl, value, XUSB_PADCTL_HSIC_PAD_TRK_CTL);

        udelay(50);

        clk_disable_unprepare(pad->clk);

        return 0;

disable:
        regulator_disable(pad->supply);
        return err;
}

static int tegra210_hsic_phy_power_off(struct phy *phy)
{
        struct tegra_xusb_lane *lane = phy_get_drvdata(phy);
        struct tegra_xusb_hsic_pad *pad = to_hsic_pad(lane->pad);
        struct tegra_xusb_padctl *padctl = lane->pad->padctl;
        unsigned int index = lane->index;
        u32 value;

        value = padctl_readl(padctl, XUSB_PADCTL_HSIC_PADX_CTL0(index));
        value |= XUSB_PADCTL_HSIC_PAD_CTL0_PD_RX_DATA0 |
                 XUSB_PADCTL_HSIC_PAD_CTL0_PD_RX_DATA1 |
                 XUSB_PADCTL_HSIC_PAD_CTL0_PD_RX_STROBE |
                 XUSB_PADCTL_HSIC_PAD_CTL0_PD_ZI_DATA0 |
                 XUSB_PADCTL_HSIC_PAD_CTL0_PD_ZI_DATA1 |
                 XUSB_PADCTL_HSIC_PAD_CTL0_PD_ZI_STROBE |
                 XUSB_PADCTL_HSIC_PAD_CTL0_PD_TX_DATA0 |
                 XUSB_PADCTL_HSIC_PAD_CTL0_PD_TX_DATA1 |
                 XUSB_PADCTL_HSIC_PAD_CTL0_PD_TX_STROBE;
        padctl_writel(padctl, value, XUSB_PADCTL_HSIC_PADX_CTL1(index));

        regulator_disable(pad->supply);

        return 0;
}

static const struct phy_ops tegra210_hsic_phy_ops = {
        .init = tegra210_hsic_phy_init,
        .exit = tegra210_hsic_phy_exit,
        .power_on = tegra210_hsic_phy_power_on,
        .power_off = tegra210_hsic_phy_power_off,
        .owner = THIS_MODULE,
};

static struct tegra_xusb_pad *
tegra210_hsic_pad_probe(struct tegra_xusb_padctl *padctl,
                        const struct tegra_xusb_pad_soc *soc,
                        struct device_node *np)
{
        struct tegra_xusb_hsic_pad *hsic;
        struct tegra_xusb_pad *pad;
        int err;

        hsic = kzalloc(sizeof(*hsic), GFP_KERNEL);
        if (!hsic)
                return ERR_PTR(-ENOMEM);

        pad = &hsic->base;
        pad->ops = &tegra210_hsic_lane_ops;
        pad->soc = soc;

        err = tegra_xusb_pad_init(pad, padctl, np);
        if (err < 0) {
                kfree(hsic);
                goto out;
        }

        hsic->clk = devm_clk_get(&pad->dev, "trk");
        if (IS_ERR(hsic->clk)) {
                err = PTR_ERR(hsic->clk);
                dev_err(&pad->dev, "failed to get trk clock: %d\n", err);
                goto unregister;
        }

        err = tegra_xusb_pad_register(pad, &tegra210_hsic_phy_ops);
        if (err < 0)
                goto unregister;

        dev_set_drvdata(&pad->dev, pad);

        return pad;

unregister:
        device_unregister(&pad->dev);
out:
        return ERR_PTR(err);
}

static void tegra210_hsic_pad_remove(struct tegra_xusb_pad *pad)
{
        struct tegra_xusb_hsic_pad *hsic = to_hsic_pad(pad);

        kfree(hsic);
}

static const struct tegra_xusb_pad_ops tegra210_hsic_ops = {
        .probe = tegra210_hsic_pad_probe,
        .remove = tegra210_hsic_pad_remove,
};

static const struct tegra_xusb_pad_soc tegra210_hsic_pad = {
        .name = "hsic",
        .num_lanes = ARRAY_SIZE(tegra210_hsic_lanes),
        .lanes = tegra210_hsic_lanes,
        .ops = &tegra210_hsic_ops,
};

static const char *tegra210_pcie_functions[] = {
        "pcie-x1",
        "usb3-ss",
        "sata",
        "pcie-x4",
};

static const struct tegra_xusb_lane_soc tegra210_pcie_lanes[] = {
        TEGRA210_LANE("pcie-0", 0x028, 12, 0x3, pcie),
        TEGRA210_LANE("pcie-1", 0x028, 14, 0x3, pcie),
        TEGRA210_LANE("pcie-2", 0x028, 16, 0x3, pcie),
        TEGRA210_LANE("pcie-3", 0x028, 18, 0x3, pcie),
        TEGRA210_LANE("pcie-4", 0x028, 20, 0x3, pcie),
        TEGRA210_LANE("pcie-5", 0x028, 22, 0x3, pcie),
        TEGRA210_LANE("pcie-6", 0x028, 24, 0x3, pcie),
};

static struct tegra_xusb_lane *
tegra210_pcie_lane_probe(struct tegra_xusb_pad *pad, struct device_node *np,
                         unsigned int index)
{
        struct tegra_xusb_pcie_lane *pcie;
        int err;

        pcie = kzalloc(sizeof(*pcie), GFP_KERNEL);
        if (!pcie)
                return ERR_PTR(-ENOMEM);

        INIT_LIST_HEAD(&pcie->base.list);
        pcie->base.soc = &pad->soc->lanes[index];
        pcie->base.index = index;
        pcie->base.pad = pad;
        pcie->base.np = np;

        err = tegra_xusb_lane_parse_dt(&pcie->base, np);
        if (err < 0) {
                kfree(pcie);
                return ERR_PTR(err);
        }

        return &pcie->base;
}

static void tegra210_pcie_lane_remove(struct tegra_xusb_lane *lane)
{
        struct tegra_xusb_pcie_lane *pcie = to_pcie_lane(lane);

        kfree(pcie);
}

static const struct tegra_xusb_lane_ops tegra210_pcie_lane_ops = {
        .probe = tegra210_pcie_lane_probe,
        .remove = tegra210_pcie_lane_remove,
};

static int tegra210_pcie_phy_init(struct phy *phy)
{
        struct tegra_xusb_lane *lane = phy_get_drvdata(phy);

        return tegra210_xusb_padctl_enable(lane->pad->padctl);
}

static int tegra210_pcie_phy_exit(struct phy *phy)
{
        struct tegra_xusb_lane *lane = phy_get_drvdata(phy);

        return tegra210_xusb_padctl_disable(lane->pad->padctl);
}

static int tegra210_pcie_phy_power_on(struct phy *phy)
{
        struct tegra_xusb_lane *lane = phy_get_drvdata(phy);
        struct tegra_xusb_padctl *padctl = lane->pad->padctl;
        u32 value;
        int err;

        mutex_lock(&padctl->lock);

        err = tegra210_pex_uphy_enable(padctl);
        if (err < 0)
                goto unlock;

        value = padctl_readl(padctl, XUSB_PADCTL_USB3_PAD_MUX);
        value |= XUSB_PADCTL_USB3_PAD_MUX_PCIE_IDDQ_DISABLE(lane->index);
        padctl_writel(padctl, value, XUSB_PADCTL_USB3_PAD_MUX);

unlock:
        mutex_unlock(&padctl->lock);
        return err;
}

static int tegra210_pcie_phy_power_off(struct phy *phy)
{
        struct tegra_xusb_lane *lane = phy_get_drvdata(phy);
        struct tegra_xusb_padctl *padctl = lane->pad->padctl;
        u32 value;

        value = padctl_readl(padctl, XUSB_PADCTL_USB3_PAD_MUX);
        value &= ~XUSB_PADCTL_USB3_PAD_MUX_PCIE_IDDQ_DISABLE(lane->index);
        padctl_writel(padctl, value, XUSB_PADCTL_USB3_PAD_MUX);

        tegra210_pex_uphy_disable(padctl);

        return 0;
}

static const struct phy_ops tegra210_pcie_phy_ops = {
        .init = tegra210_pcie_phy_init,
        .exit = tegra210_pcie_phy_exit,
        .power_on = tegra210_pcie_phy_power_on,
        .power_off = tegra210_pcie_phy_power_off,
        .owner = THIS_MODULE,
};

static struct tegra_xusb_pad *
tegra210_pcie_pad_probe(struct tegra_xusb_padctl *padctl,
                        const struct tegra_xusb_pad_soc *soc,
                        struct device_node *np)
{
        struct tegra_xusb_pcie_pad *pcie;
        struct tegra_xusb_pad *pad;
        int err;

        pcie = kzalloc(sizeof(*pcie), GFP_KERNEL);
        if (!pcie)
                return ERR_PTR(-ENOMEM);

        pad = &pcie->base;
        pad->ops = &tegra210_pcie_lane_ops;
        pad->soc = soc;

        err = tegra_xusb_pad_init(pad, padctl, np);
        if (err < 0) {
                kfree(pcie);
                goto out;
        }

        pcie->pll = devm_clk_get(&pad->dev, "pll");
        if (IS_ERR(pcie->pll)) {
                err = PTR_ERR(pcie->pll);
                dev_err(&pad->dev, "failed to get PLL: %d\n", err);
                goto unregister;
        }

        pcie->rst = devm_reset_control_get(&pad->dev, "phy");
        if (IS_ERR(pcie->rst)) {
                err = PTR_ERR(pcie->rst);
                dev_err(&pad->dev, "failed to get PCIe pad reset: %d\n", err);
                goto unregister;
        }

        err = tegra_xusb_pad_register(pad, &tegra210_pcie_phy_ops);
        if (err < 0)
                goto unregister;

        dev_set_drvdata(&pad->dev, pad);

        return pad;

unregister:
        device_unregister(&pad->dev);
out:
        return ERR_PTR(err);
}

static void tegra210_pcie_pad_remove(struct tegra_xusb_pad *pad)
{
        struct tegra_xusb_pcie_pad *pcie = to_pcie_pad(pad);

        kfree(pcie);
}

static const struct tegra_xusb_pad_ops tegra210_pcie_ops = {
        .probe = tegra210_pcie_pad_probe,
        .remove = tegra210_pcie_pad_remove,
};

static const struct tegra_xusb_pad_soc tegra210_pcie_pad = {
        .name = "pcie",
        .num_lanes = ARRAY_SIZE(tegra210_pcie_lanes),
        .lanes = tegra210_pcie_lanes,
        .ops = &tegra210_pcie_ops,
};

static const struct tegra_xusb_lane_soc tegra210_sata_lanes[] = {
        TEGRA210_LANE("sata-0", 0x028, 30, 0x3, pcie),
};

static struct tegra_xusb_lane *
tegra210_sata_lane_probe(struct tegra_xusb_pad *pad, struct device_node *np,
                         unsigned int index)
{
        struct tegra_xusb_sata_lane *sata;
        int err;

        sata = kzalloc(sizeof(*sata), GFP_KERNEL);
        if (!sata)
                return ERR_PTR(-ENOMEM);

        INIT_LIST_HEAD(&sata->base.list);
        sata->base.soc = &pad->soc->lanes[index];
        sata->base.index = index;
        sata->base.pad = pad;
        sata->base.np = np;

        err = tegra_xusb_lane_parse_dt(&sata->base, np);
        if (err < 0) {
                kfree(sata);
                return ERR_PTR(err);
        }

        return &sata->base;
}

static void tegra210_sata_lane_remove(struct tegra_xusb_lane *lane)
{
        struct tegra_xusb_sata_lane *sata = to_sata_lane(lane);

        kfree(sata);
}

static const struct tegra_xusb_lane_ops tegra210_sata_lane_ops = {
        .probe = tegra210_sata_lane_probe,
        .remove = tegra210_sata_lane_remove,
};

static int tegra210_sata_phy_init(struct phy *phy)
{
        struct tegra_xusb_lane *lane = phy_get_drvdata(phy);

        return tegra210_xusb_padctl_enable(lane->pad->padctl);
}

static int tegra210_sata_phy_exit(struct phy *phy)
{
        struct tegra_xusb_lane *lane = phy_get_drvdata(phy);

        return tegra210_xusb_padctl_disable(lane->pad->padctl);
}

static int tegra210_sata_phy_power_on(struct phy *phy)
{
        struct tegra_xusb_lane *lane = phy_get_drvdata(phy);
        struct tegra_xusb_padctl *padctl = lane->pad->padctl;
        u32 value;
        int err;

        mutex_lock(&padctl->lock);

        err = tegra210_sata_uphy_enable(padctl, false);
        if (err < 0)
                goto unlock;

        value = padctl_readl(padctl, XUSB_PADCTL_USB3_PAD_MUX);
        value |= XUSB_PADCTL_USB3_PAD_MUX_SATA_IDDQ_DISABLE(lane->index);
        padctl_writel(padctl, value, XUSB_PADCTL_USB3_PAD_MUX);

unlock:
        mutex_unlock(&padctl->lock);
        return err;
}

static int tegra210_sata_phy_power_off(struct phy *phy)
{
        struct tegra_xusb_lane *lane = phy_get_drvdata(phy);
        struct tegra_xusb_padctl *padctl = lane->pad->padctl;
        u32 value;

        value = padctl_readl(padctl, XUSB_PADCTL_USB3_PAD_MUX);
        value &= ~XUSB_PADCTL_USB3_PAD_MUX_SATA_IDDQ_DISABLE(lane->index);
        padctl_writel(padctl, value, XUSB_PADCTL_USB3_PAD_MUX);

        tegra210_sata_uphy_disable(lane->pad->padctl);

        return 0;
}

static const struct phy_ops tegra210_sata_phy_ops = {
        .init = tegra210_sata_phy_init,
        .exit = tegra210_sata_phy_exit,
        .power_on = tegra210_sata_phy_power_on,
        .power_off = tegra210_sata_phy_power_off,
        .owner = THIS_MODULE,
};

static struct tegra_xusb_pad *
tegra210_sata_pad_probe(struct tegra_xusb_padctl *padctl,
                        const struct tegra_xusb_pad_soc *soc,
                        struct device_node *np)
{
        struct tegra_xusb_sata_pad *sata;
        struct tegra_xusb_pad *pad;
        int err;

        sata = kzalloc(sizeof(*sata), GFP_KERNEL);
        if (!sata)
                return ERR_PTR(-ENOMEM);

        pad = &sata->base;
        pad->ops = &tegra210_sata_lane_ops;
        pad->soc = soc;

        err = tegra_xusb_pad_init(pad, padctl, np);
        if (err < 0) {
                kfree(sata);
                goto out;
        }

        sata->rst = devm_reset_control_get(&pad->dev, "phy");
        if (IS_ERR(sata->rst)) {
                err = PTR_ERR(sata->rst);
                dev_err(&pad->dev, "failed to get SATA pad reset: %d\n", err);
                goto unregister;
        }

        err = tegra_xusb_pad_register(pad, &tegra210_sata_phy_ops);
        if (err < 0)
                goto unregister;

        dev_set_drvdata(&pad->dev, pad);

        return pad;

unregister:
        device_unregister(&pad->dev);
out:
        return ERR_PTR(err);
}

static void tegra210_sata_pad_remove(struct tegra_xusb_pad *pad)
{
        struct tegra_xusb_sata_pad *sata = to_sata_pad(pad);

        kfree(sata);
}

static const struct tegra_xusb_pad_ops tegra210_sata_ops = {
        .probe = tegra210_sata_pad_probe,
        .remove = tegra210_sata_pad_remove,
};

static const struct tegra_xusb_pad_soc tegra210_sata_pad = {
        .name = "sata",
        .num_lanes = ARRAY_SIZE(tegra210_sata_lanes),
        .lanes = tegra210_sata_lanes,
        .ops = &tegra210_sata_ops,
};

static const struct tegra_xusb_pad_soc * const tegra210_pads[] = {
        &tegra210_usb2_pad,
        &tegra210_hsic_pad,
        &tegra210_pcie_pad,
        &tegra210_sata_pad,
};

static int tegra210_usb2_port_enable(struct tegra_xusb_port *port)
{
        return 0;
}

static void tegra210_usb2_port_disable(struct tegra_xusb_port *port)
{
}

static struct tegra_xusb_lane *
tegra210_usb2_port_map(struct tegra_xusb_port *port)
{
        return tegra_xusb_find_lane(port->padctl, "usb2", port->index);
}

static const struct tegra_xusb_port_ops tegra210_usb2_port_ops = {
        .release = tegra_xusb_usb2_port_release,
        .remove = tegra_xusb_usb2_port_remove,
        .enable = tegra210_usb2_port_enable,
        .disable = tegra210_usb2_port_disable,
        .map = tegra210_usb2_port_map,
};

static int tegra210_hsic_port_enable(struct tegra_xusb_port *port)
{
        return 0;
}

static void tegra210_hsic_port_disable(struct tegra_xusb_port *port)
{
}

static struct tegra_xusb_lane *
tegra210_hsic_port_map(struct tegra_xusb_port *port)
{
        return tegra_xusb_find_lane(port->padctl, "hsic", port->index);
}

static const struct tegra_xusb_port_ops tegra210_hsic_port_ops = {
        .release = tegra_xusb_hsic_port_release,
        .enable = tegra210_hsic_port_enable,
        .disable = tegra210_hsic_port_disable,
        .map = tegra210_hsic_port_map,
};

static int tegra210_usb3_port_enable(struct tegra_xusb_port *port)
{
        struct tegra_xusb_usb3_port *usb3 = to_usb3_port(port);
        struct tegra_xusb_padctl *padctl = port->padctl;
        struct tegra_xusb_lane *lane = usb3->base.lane;
        unsigned int index = port->index;
        u32 value;
        int err;

        value = padctl_readl(padctl, XUSB_PADCTL_SS_PORT_MAP);

        if (!usb3->internal)
                value &= ~XUSB_PADCTL_SS_PORT_MAP_PORTX_INTERNAL(index);
        else
                value |= XUSB_PADCTL_SS_PORT_MAP_PORTX_INTERNAL(index);

        value &= ~XUSB_PADCTL_SS_PORT_MAP_PORTX_MAP_MASK(index);
        value |= XUSB_PADCTL_SS_PORT_MAP_PORTX_MAP(index, usb3->port);
        padctl_writel(padctl, value, XUSB_PADCTL_SS_PORT_MAP);

        /*
         * TODO: move this code into the PCIe/SATA PHY ->power_on() callbacks
         * and conditionalize based on mux function? This seems to work, but
         * might not be the exact proper sequence.
         */
        err = regulator_enable(usb3->supply);
        if (err < 0)
                return err;

        value = padctl_readl(padctl, XUSB_PADCTL_UPHY_USB3_PADX_ECTL1(index));
        value &= ~(XUSB_PADCTL_UPHY_USB3_PAD_ECTL1_TX_TERM_CTRL_MASK <<
                   XUSB_PADCTL_UPHY_USB3_PAD_ECTL1_TX_TERM_CTRL_SHIFT);
        value |= XUSB_PADCTL_UPHY_USB3_PAD_ECTL1_TX_TERM_CTRL_VAL <<
                 XUSB_PADCTL_UPHY_USB3_PAD_ECTL1_TX_TERM_CTRL_SHIFT;
        padctl_writel(padctl, value, XUSB_PADCTL_UPHY_USB3_PADX_ECTL1(index));

        value = padctl_readl(padctl, XUSB_PADCTL_UPHY_USB3_PADX_ECTL2(index));
        value &= ~(XUSB_PADCTL_UPHY_USB3_PAD_ECTL2_RX_CTLE_MASK <<
                   XUSB_PADCTL_UPHY_USB3_PAD_ECTL2_RX_CTLE_SHIFT);
        value |= XUSB_PADCTL_UPHY_USB3_PAD_ECTL2_RX_CTLE_VAL <<
                 XUSB_PADCTL_UPHY_USB3_PAD_ECTL2_RX_CTLE_SHIFT;
        padctl_writel(padctl, value, XUSB_PADCTL_UPHY_USB3_PADX_ECTL2(index));

        padctl_writel(padctl, XUSB_PADCTL_UPHY_USB3_PAD_ECTL3_RX_DFE_VAL,
                      XUSB_PADCTL_UPHY_USB3_PADX_ECTL3(index));

        value = padctl_readl(padctl, XUSB_PADCTL_UPHY_USB3_PADX_ECTL4(index));
        value &= ~(XUSB_PADCTL_UPHY_USB3_PAD_ECTL4_RX_CDR_CTRL_MASK <<
                   XUSB_PADCTL_UPHY_USB3_PAD_ECTL4_RX_CDR_CTRL_SHIFT);
        value |= XUSB_PADCTL_UPHY_USB3_PAD_ECTL4_RX_CDR_CTRL_VAL <<
                 XUSB_PADCTL_UPHY_USB3_PAD_ECTL4_RX_CDR_CTRL_SHIFT;
        padctl_writel(padctl, value, XUSB_PADCTL_UPHY_USB3_PADX_ECTL4(index));

        padctl_writel(padctl, XUSB_PADCTL_UPHY_USB3_PAD_ECTL6_RX_EQ_CTRL_H_VAL,
                      XUSB_PADCTL_UPHY_USB3_PADX_ECTL6(index));

        if (lane->pad == padctl->sata)
                err = tegra210_sata_uphy_enable(padctl, true);
        else
                err = tegra210_pex_uphy_enable(padctl);

        if (err) {
                dev_err(&port->dev, "%s: failed to enable UPHY: %d\n",
                        __func__, err);
                return err;
        }

        value = padctl_readl(padctl, XUSB_PADCTL_ELPG_PROGRAM1);
        value &= ~XUSB_PADCTL_ELPG_PROGRAM1_SSPX_ELPG_VCORE_DOWN(index);
        padctl_writel(padctl, value, XUSB_PADCTL_ELPG_PROGRAM1);

        usleep_range(100, 200);

        value = padctl_readl(padctl, XUSB_PADCTL_ELPG_PROGRAM1);
        value &= ~XUSB_PADCTL_ELPG_PROGRAM1_SSPX_ELPG_CLAMP_EN_EARLY(index);
        padctl_writel(padctl, value, XUSB_PADCTL_ELPG_PROGRAM1);

        usleep_range(100, 200);

        value = padctl_readl(padctl, XUSB_PADCTL_ELPG_PROGRAM1);
        value &= ~XUSB_PADCTL_ELPG_PROGRAM1_SSPX_ELPG_CLAMP_EN(index);
        padctl_writel(padctl, value, XUSB_PADCTL_ELPG_PROGRAM1);

        return 0;
}

static void tegra210_usb3_port_disable(struct tegra_xusb_port *port)
{
        struct tegra_xusb_usb3_port *usb3 = to_usb3_port(port);
        struct tegra_xusb_padctl *padctl = port->padctl;
        struct tegra_xusb_lane *lane = port->lane;
        unsigned int index = port->index;
        u32 value;

        value = padctl_readl(padctl, XUSB_PADCTL_ELPG_PROGRAM1);
        value |= XUSB_PADCTL_ELPG_PROGRAM1_SSPX_ELPG_CLAMP_EN_EARLY(index);
        padctl_writel(padctl, value, XUSB_PADCTL_ELPG_PROGRAM1);

        usleep_range(100, 200);

        value = padctl_readl(padctl, XUSB_PADCTL_ELPG_PROGRAM1);
        value |= XUSB_PADCTL_ELPG_PROGRAM1_SSPX_ELPG_CLAMP_EN(index);
        padctl_writel(padctl, value, XUSB_PADCTL_ELPG_PROGRAM1);

        usleep_range(250, 350);

        value = padctl_readl(padctl, XUSB_PADCTL_ELPG_PROGRAM1);
        value |= XUSB_PADCTL_ELPG_PROGRAM1_SSPX_ELPG_VCORE_DOWN(index);
        padctl_writel(padctl, value, XUSB_PADCTL_ELPG_PROGRAM1);

        if (lane->pad == padctl->sata)
                tegra210_sata_uphy_disable(padctl);
        else
                tegra210_pex_uphy_disable(padctl);

        regulator_disable(usb3->supply);

        value = padctl_readl(padctl, XUSB_PADCTL_SS_PORT_MAP);
        value &= ~XUSB_PADCTL_SS_PORT_MAP_PORTX_MAP_MASK(index);
        value |= XUSB_PADCTL_SS_PORT_MAP_PORTX_MAP(index, 0x7);
        padctl_writel(padctl, value, XUSB_PADCTL_SS_PORT_MAP);
}

static const struct tegra_xusb_lane_map tegra210_usb3_map[] = {
        { 0, "pcie", 6 },
        { 1, "pcie", 5 },
        { 2, "pcie", 0 },
        { 2, "pcie", 3 },
        { 3, "pcie", 4 },
        { 3, "pcie", 4 },
        { 0, NULL,   0 }
};

static struct tegra_xusb_lane *
tegra210_usb3_port_map(struct tegra_xusb_port *port)
{
        return tegra_xusb_port_find_lane(port, tegra210_usb3_map, "usb3-ss");
}

static const struct tegra_xusb_port_ops tegra210_usb3_port_ops = {
        .release = tegra_xusb_usb3_port_release,
        .remove = tegra_xusb_usb3_port_remove,
        .enable = tegra210_usb3_port_enable,
        .disable = tegra210_usb3_port_disable,
        .map = tegra210_usb3_port_map,
};

static int tegra210_utmi_port_reset(struct phy *phy)
{
        struct tegra_xusb_padctl *padctl;
        struct tegra_xusb_lane *lane;
        u32 value;

        lane = phy_get_drvdata(phy);
        padctl = lane->pad->padctl;

        value = padctl_readl(padctl,
                     XUSB_PADCTL_USB2_BATTERY_CHRG_OTGPADX_CTL0(lane->index));

        if ((value & XUSB_PADCTL_USB2_BATTERY_CHRG_OTGPAD_CTL0_ZIP) ||
            (value & XUSB_PADCTL_USB2_BATTERY_CHRG_OTGPAD_CTL0_ZIN)) {
                tegra210_xusb_padctl_vbus_override(padctl, false);
                tegra210_xusb_padctl_vbus_override(padctl, true);
                return 1;
        }

        return 0;
}

static int
tegra210_xusb_read_fuse_calibration(struct tegra210_xusb_fuse_calibration *fuse)
{
        unsigned int i;
        u32 value;
        int err;

        err = tegra_fuse_readl(TEGRA_FUSE_SKU_CALIB_0, &value);
        if (err < 0)
                return err;

        for (i = 0; i < ARRAY_SIZE(fuse->hs_curr_level); i++) {
                fuse->hs_curr_level[i] =
                        (value >> FUSE_SKU_CALIB_HS_CURR_LEVEL_PADX_SHIFT(i)) &
                        FUSE_SKU_CALIB_HS_CURR_LEVEL_PAD_MASK;
        }

        fuse->hs_term_range_adj =
                (value >> FUSE_SKU_CALIB_HS_TERM_RANGE_ADJ_SHIFT) &
                FUSE_SKU_CALIB_HS_TERM_RANGE_ADJ_MASK;

        err = tegra_fuse_readl(TEGRA_FUSE_USB_CALIB_EXT_0, &value);
        if (err < 0)
                return err;

        fuse->rpd_ctrl =
                (value >> FUSE_USB_CALIB_EXT_RPD_CTRL_SHIFT) &
                FUSE_USB_CALIB_EXT_RPD_CTRL_MASK;

        return 0;
}

static struct tegra_xusb_padctl *
tegra210_xusb_padctl_probe(struct device *dev,
                           const struct tegra_xusb_padctl_soc *soc)
{
        struct tegra210_xusb_padctl *padctl;
        int err;

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

        padctl->base.dev = dev;
        padctl->base.soc = soc;

        err = tegra210_xusb_read_fuse_calibration(&padctl->fuse);
        if (err < 0)
                return ERR_PTR(err);

        return &padctl->base;
}

static void tegra210_xusb_padctl_remove(struct tegra_xusb_padctl *padctl)
{
}

static const struct tegra_xusb_padctl_ops tegra210_xusb_padctl_ops = {
        .probe = tegra210_xusb_padctl_probe,
        .remove = tegra210_xusb_padctl_remove,
        .usb3_set_lfps_detect = tegra210_usb3_set_lfps_detect,
        .hsic_set_idle = tegra210_hsic_set_idle,
        .vbus_override = tegra210_xusb_padctl_vbus_override,
        .utmi_port_reset = tegra210_utmi_port_reset,
};

static const char * const tegra210_xusb_padctl_supply_names[] = {
        "avdd-pll-utmip",
        "avdd-pll-uerefe",
        "dvdd-pex-pll",
        "hvdd-pex-pll-e",
};

const struct tegra_xusb_padctl_soc tegra210_xusb_padctl_soc = {
        .num_pads = ARRAY_SIZE(tegra210_pads),
        .pads = tegra210_pads,
        .ports = {
                .usb2 = {
                        .ops = &tegra210_usb2_port_ops,
                        .count = 4,
                },
                .hsic = {
                        .ops = &tegra210_hsic_port_ops,
                        .count = 1,
                },
                .usb3 = {
                        .ops = &tegra210_usb3_port_ops,
                        .count = 4,
                },
        },
        .ops = &tegra210_xusb_padctl_ops,
        .supply_names = tegra210_xusb_padctl_supply_names,
        .num_supplies = ARRAY_SIZE(tegra210_xusb_padctl_supply_names),
        .need_fake_usb3_port = true,
};
EXPORT_SYMBOL_GPL(tegra210_xusb_padctl_soc);

MODULE_AUTHOR("Andrew Bresticker <abrestic@chromium.org>");
MODULE_DESCRIPTION("NVIDIA Tegra 210 XUSB Pad Controller driver");
MODULE_LICENSE("GPL v2");