Revert "ARM: tegra: skip USB resume from LP0"

[sojka/nv-tegra/linux-3.10.git] / drivers / usb / phy / tegra11x_usb_phy.c

/*
 * drivers/usb/phy/tegra11x_usb_phy.c
 *
 * Copyright (c) 2012-2014 NVIDIA Corporation. All rights reserved.
 *
 *
 * This software is licensed under the terms of the GNU General Public
 * License version 2, as published by the Free Software Foundation, and
 * may be copied, distributed, and modified under those terms.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 */
#include <linux/resource.h>
#include <linux/delay.h>
#include <linux/interrupt.h>
#include <linux/slab.h>
#include <linux/err.h>
#include <linux/platform_device.h>
#include <linux/io.h>
#include <linux/gpio.h>
#include <linux/interrupt.h>
#include <linux/clk.h>
#include <linux/regulator/consumer.h>
#include <linux/platform_data/tegra_usb.h>
#include <linux/clk/tegra.h>
#include <linux/tegra-soc.h>
#include <linux/tegra-fuse.h>
#include <mach/tegra_usb_pmc.h>
#include <mach/tegra_usb_pad_ctrl.h>

#include "tegra_usb_phy.h"
#include "../../../arch/arm/mach-tegra/gpio-names.h"

/* HACK! This needs to come from DT */
#include "../../../arch/arm/mach-tegra/iomap.h"

#define USB_USBCMD              0x130
#define   USB_USBCMD_RS         (1 << 0)
#define   USB_CMD_RESET (1<<1)

#define USB_USBSTS              0x134
#define   USB_USBSTS_PCI        (1 << 2)
#define   USB_USBSTS_SRI        (1 << 7)
#define   USB_USBSTS_HCH        (1 << 12)

#define USB_TXFILLTUNING        0x154
#define   USB_FIFO_TXFILL_THRES(x)   (((x) & 0x1f) << 16)
#define   USB_FIFO_TXFILL_MASK    0x1f0000

#define USB_ASYNCLISTADDR       0x148

#define ICUSB_CTRL              0x15c

#define USB_USBMODE             0x1f8
#define   USB_USBMODE_MASK              (3 << 0)
#define   USB_USBMODE_HOST              (3 << 0)
#define   USB_USBMODE_DEVICE            (2 << 0)

#define USB_SUSP_CTRL           0x400
#define   USB_WAKE_ON_CNNT_EN_DEV       (1 << 3)
#define   USB_WAKE_ON_DISCON_EN_DEV (1 << 4)
#define   USB_SUSP_CLR                  (1 << 5)
#define   USB_CLKEN             (1 << 6)
#define   USB_PHY_CLK_VALID             (1 << 7)
#define   USB_PHY_CLK_VALID_INT_ENB     (1 << 9)
#define   USB_PHY_CLK_VALID_INT_STS     (1 << 8)
#define   UTMIP_RESET                   (1 << 11)
#define   UTMIP_PHY_ENABLE              (1 << 12)
#define   UHSIC_RESET                   (1 << 14)
#define   USB_WAKEUP_DEBOUNCE_COUNT(x)  (((x) & 0x7) << 16)
#define   UHSIC_PHY_ENABLE              (1 << 19)

#define USB_PHY_VBUS_WAKEUP_ID  0x408
#define   DIV_DET_EN            (1 << 31)
#define   VDCD_DET_STS          (1 << 26)
#define   VDCD_DET_CHG_DET      (1 << 25)
#define   VOP_DIV2P7_DET        (1 << 23)
#define   VOP_DIV2P0_DET        (1 << 22)
#define   VON_DIV2P7_DET        (1 << 15)
#define   VON_DIV2P0_DET        (1 << 14)
#define   VDAT_DET_INT_EN       (1 << 16)
#define   VDAT_DET_CHG_DET      (1 << 17)
#define   VDAT_DET_STS          (1 << 18)
#define   USB_ID_STATUS         (1 << 2)
#define   USB_ID_SW_VALUE       (1 << 4)

#define USB_IF_SPARE    0x498
#define   USB_HS_RSM_EOP_EN         (1 << 4)
#define   USB_PORT_SUSPEND_EN       (1 << 5)

#define USB_NEW_CONTROL  0x4c0
#define   USB_COHRENCY_EN           (1 << 0)
#define   USB_MEM_ALLIGNMENT_MUX_EN (1 << 1)

#define UTMIP_XCVR_CFG0         0x808
#define   UTMIP_XCVR_SETUP(x)                   (((x) & 0xf) << 0)
#define   UTMIP_XCVR_LSRSLEW(x)                 (((x) & 0x3) << 8)
#define   UTMIP_XCVR_LSFSLEW(x)                 (((x) & 0x3) << 10)
#define   UTMIP_FORCE_PD_POWERDOWN              (1 << 14)
#define   UTMIP_FORCE_PD2_POWERDOWN             (1 << 16)
#define   UTMIP_FORCE_PDZI_POWERDOWN            (1 << 18)
#define   UTMIP_XCVR_LSBIAS_SEL                 (1 << 21)
#define   UTMIP_XCVR_SETUP_MSB(x)               (((x) & 0x7) << 22)
#define   UTMIP_XCVR_HSSLEW_MSB(x)              (((x) & 0x7f) << 25)
#define   UTMIP_XCVR_HSSLEW_LSB(x)              (((x) & 0x3) << 4)
#define   UTMIP_XCVR_MAX_OFFSET         2
#define   UTMIP_XCVR_SETUP_MAX_VALUE    0x7f
#define   UTMIP_XCVR_SETUP_MIN_VALUE    0
#define   XCVR_SETUP_MSB_CALIB(x) ((x) >> 4)

#define UTMIP_HSRX_CFG0         0x810
#define   UTMIP_ELASTIC_LIMIT(x)        (((x) & 0x1f) << 10)
#define   UTMIP_IDLE_WAIT(x)            (((x) & 0x1f) << 15)

#define UTMIP_HSRX_CFG1         0x814
#define   UTMIP_HS_SYNC_START_DLY(x)    (((x) & 0x1f) << 1)

#define UTMIP_TX_CFG0           0x820
#define   UTMIP_FS_PREABMLE_J           (1 << 19)
#define   UTMIP_HS_DISCON_DISABLE       (1 << 8)

#define UTMIP_DEBOUNCE_CFG0 0x82c
#define   UTMIP_BIAS_DEBOUNCE_A(x)      (((x) & 0xffff) << 0)

#define UTMIP_BAT_CHRG_CFG0 0x830
#define   UTMIP_PD_CHRG                 (1 << 0)
#define   UTMIP_OP_SINK_EN              (1 << 1)
#define   UTMIP_ON_SINK_EN              (1 << 2)
#define   UTMIP_OP_SRC_EN               (1 << 3)
#define   UTMIP_ON_SRC_EN               (1 << 4)
#define   UTMIP_OP_I_SRC_EN             (1 << 5)

#define UTMIP_XCVR_CFG1         0x838
#define   UTMIP_FORCE_PDDISC_POWERDOWN  (1 << 0)
#define   UTMIP_FORCE_PDCHRP_POWERDOWN  (1 << 2)
#define   UTMIP_FORCE_PDDR_POWERDOWN    (1 << 4)
#define   UTMIP_XCVR_TERM_RANGE_ADJ(x)  (((x) & 0xf) << 18)
#define   UTMIP_XCVR_HS_IREF_CAP(x) (((x) & 0x3) << 24)

#define UTMIP_XCVR_CFG2         0x854
#define   UTMIP_XCVR_VREG_MASK          (0x7 << 9)
#define   UTMIP_XCVR_VREG_LEV_1P5V      (1 << 10)
#define   UTMIP_XCVR_VREG_FIX18         (1 << 9)

#define UTMIP_MISC_CFG0         0x824
#define   UTMIP_DPDM_OBSERVE            (1 << 26)
#define   UTMIP_DPDM_OBSERVE_SEL(x) (((x) & 0xf) << 27)
#define   UTMIP_DPDM_OBSERVE_SEL_FS_J   UTMIP_DPDM_OBSERVE_SEL(0xf)
#define   UTMIP_DPDM_OBSERVE_SEL_FS_K   UTMIP_DPDM_OBSERVE_SEL(0xe)
#define   UTMIP_DPDM_OBSERVE_SEL_FS_SE1 UTMIP_DPDM_OBSERVE_SEL(0xd)
#define   UTMIP_DPDM_OBSERVE_SEL_FS_SE0 UTMIP_DPDM_OBSERVE_SEL(0xc)
#define   UTMIP_SUSPEND_EXIT_ON_EDGE    (1 << 22)
#define   DISABLE_PULLUP_DP (1 << 15)
#define   DISABLE_PULLUP_DM (1 << 14)
#define   DISABLE_PULLDN_DP (1 << 13)
#define   DISABLE_PULLDN_DM (1 << 12)
#define   FORCE_PULLUP_DP       (1 << 11)
#define   FORCE_PULLUP_DM       (1 << 10)
#define   FORCE_PULLDN_DP       (1 << 9)
#define   FORCE_PULLDN_DM       (1 << 8)
#define   COMB_TERMS            (1 << 0)
#define   ALWAYS_FREE_RUNNING_TERMS (1 << 1)
#define   MASK_ALL_PULLUP_PULLDOWN (0xff << 8)

#define UTMIP_SPARE_CFG0        0x834
#define   FUSE_SETUP_SEL                (1 << 3)
#define   FUSE_ATERM_SEL                (1 << 4)
#define   FUSE_SQUELCH_SEL              (1 << 7)

#define UHSIC_PLL_CFG1                          0xc04
#define   UHSIC_XTAL_FREQ_COUNT(x)              (((x) & 0xfff) << 0)
#define   UHSIC_PLLU_ENABLE_DLY_COUNT(x)        (((x) & 0x1f) << 14)

#define UHSIC_HSRX_CFG0                         0xc08
#define   UHSIC_ELASTIC_UNDERRUN_LIMIT(x)       (((x) & 0x1f) << 2)
#define   UHSIC_ELASTIC_OVERRUN_LIMIT(x)        (((x) & 0x1f) << 8)
#define   UHSIC_IDLE_WAIT(x)                    (((x) & 0x1f) << 13)

#define UHSIC_HSRX_CFG1                         0xc0c
#define   UHSIC_HS_SYNC_START_DLY(x)            (((x) & 0x1f) << 1)

#define UHSIC_TX_CFG0                           0xc10
#define   UHSIC_HS_READY_WAIT_FOR_VALID (1 << 9)
#define   UHSIC_HS_POSTAMBLE_OUTPUT_ENABLE      (1 << 6)


#define UHSIC_MISC_CFG0                         0xc14
#define   UHSIC_SUSPEND_EXIT_ON_EDGE            (1 << 7)
#define   UHSIC_DETECT_SHORT_CONNECT            (1 << 8)
#define   UHSIC_FORCE_XCVR_MODE                 (1 << 15)
#define   UHSIC_DISABLE_BUSRESET                (1 << 20)

#define UHSIC_MISC_CFG1                         0xc18
#define   UHSIC_PLLU_STABLE_COUNT(x)            (((x) & 0xfff) << 2)

#define UHSIC_PADS_CFG0                         0xc1c
#define   UHSIC_TX_RTUNEN                       0xf000
#define   UHSIC_TX_RTUNEP                       0xf00
#define   UHSIC_TX_RTUNE_P(x)                   (((x) & 0xf) << 8)
#define   UHSIC_TX_SLEWP                        (0xf << 16)
#define   UHSIC_TX_SLEWN                        (0xf << 20)

#define UHSIC_PADS_CFG1                         0xc20
#define   UHSIC_AUTO_RTERM_EN                   (1 << 0)
#define   UHSIC_PD_BG                           (1 << 2)
#define   UHSIC_PD_TX                           (1 << 3)
#define   UHSIC_PD_TRK                          (1 << 4)
#define   UHSIC_PD_RX                           (1 << 5)
#define   UHSIC_PD_ZI                           (1 << 6)
#define   UHSIC_RX_SEL                          (1 << 7)
#define   UHSIC_RPD_DATA                        (1 << 9)
#define   UHSIC_RPD_STROBE                      (1 << 10)
#define   UHSIC_RPU_DATA                        (1 << 11)
#define   UHSIC_RPU_STROBE                      (1 << 12)

#define UHSIC_SPARE_CFG0                        0xc2c
#define   FORCE_BK_ON                           (1 << 12)

#define UHSIC_STAT_CFG0                 0xc28
#define   UHSIC_CONNECT_DETECT          (1 << 0)

#define UHSIC_STATUS(inst)              UHSIC_INST(inst, 0x214, 0x290)
#define   UHSIC_WAKE_ALARM(inst)        (1 << UHSIC_INST(inst, 19, 4))
#define   UHSIC_WALK_PTR_VAL(inst)      (0x3 << UHSIC_INST(inst, 6, 0))
#define   UHSIC_DATA_VAL(inst)          (1 << UHSIC_INST(inst, 15, 3))
#define   UHSIC_STROBE_VAL(inst)        (1 << UHSIC_INST(inst, 14, 2))

#define UHSIC_CMD_CFG0                  0xc24
#define   UHSIC_PRETEND_CONNECT_DETECT  (1 << 5)

#define USB_USBINTR                                             0x138

#define UTMIP_STATUS            0x214
#define   UTMIP_WALK_PTR_VAL(inst)      (0x3 << ((inst)*2))
#define   UTMIP_USBOP_VAL(inst)         (1 << ((2*(inst)) + 8))
#define   UTMIP_USBOP_VAL_P2            (1 << 12)
#define   UTMIP_USBOP_VAL_P1            (1 << 10)
#define   UTMIP_USBOP_VAL_P0            (1 << 8)
#define   UTMIP_USBON_VAL(inst)         (1 << ((2*(inst)) + 9))
#define   UTMIP_USBON_VAL_P2            (1 << 13)
#define   UTMIP_USBON_VAL_P1            (1 << 11)
#define   UTMIP_USBON_VAL_P0            (1 << 9)
#define   UTMIP_WAKE_ALARM(inst)                (1 << ((inst) + 16))
#define   UTMIP_WAKE_ALARM_P2   (1 << 18)
#define   UTMIP_WAKE_ALARM_P1   (1 << 17)
#define   UTMIP_WAKE_ALARM_P0   (1 << 16)
#define   UTMIP_WALK_PTR(inst)  (1 << ((inst)*2))
#define   UTMIP_WALK_PTR_P2     (1 << 4)
#define   UTMIP_WALK_PTR_P1     (1 << 2)
#define   UTMIP_WALK_PTR_P0     (1 << 0)

#define USB1_PREFETCH_ID               6
#define USB2_PREFETCH_ID               18
#define USB3_PREFETCH_ID               17

#define FUSE_USB_CALIB_0                0x1F0
#define   XCVR_SETUP_P0(x)      (((x) & 0x7F) << 0)
#define   XCVR_SETUP_P1(x)      (((x) & (0x7F << 15)) >> 15)
#define   XCVR_SETUP_P2(x)      (((x) & (0x7F << 22)) >> 22)
#define   XCVR_SETUP_LSB_MASK   0xF
#define   XCVR_SETUP_MSB_MASK   0x70
#define   XCVR_SETUP_LSB_MAX_VAL        0xF

#define APB_MISC_GP_OBSCTRL_0   0x818
#define APB_MISC_GP_OBSDATA_0   0x81c

#define PADCTL_SNPS_OC_MAP      0xC
#define   CONTROLLER_OC(inst, x)        (((x) & 0x7) << (3 * (inst)))
#define   CONTROLLER_OC_P0(x)   (((x) & 0x7) << 0)
#define   CONTROLLER_OC_P1(x)   (((x) & 0x7) << 3)
#define   CONTROLLER_OC_P2(x)   (((x) & 0x7) << 6)

#define PADCTL_OC_DET           0x18
#define   ENABLE0_OC_MAP(x)     (((x) & 0x7) << 10)
#define   ENABLE1_OC_MAP(x)     (((x) & 0x7) << 13)

#define TEGRA_STREAM_DISABLE    0x1f8
#define TEGRA_STREAM_DISABLE_OFFSET     (1 << 4)

/* These values (in milli second) are taken from the battery charging spec */
#define TDP_SRC_ON_MS    100
#define TDPSRC_CON_MS    40

/* Maxim Debounce Timer */
#define MAXIM_DEBOUNCE_TIME 120

/* Force port resume wait time in micro second on remote resume */
#define FPR_WAIT_TIME_US 25000

/* define HSIC phy params */
#define HSIC_SYNC_START_DELAY           9
#define HSIC_IDLE_WAIT_DELAY            17
#define HSIC_ELASTIC_UNDERRUN_LIMIT     16
#define HSIC_ELASTIC_OVERRUN_LIMIT      16

struct tegra_usb_pmc_data pmc_data[3];

static struct tegra_xtal_freq utmip_freq_table[] = {
        {
                .freq = 12000000,
                .enable_delay = 0x02,
                .stable_count = 0x2F,
                .active_delay = 0x04,
                .xtal_freq_count = 0x76,
                .debounce = 0x7530,
                .pdtrk_count = 5,
        },
        {
                .freq = 13000000,
                .enable_delay = 0x02,
                .stable_count = 0x33,
                .active_delay = 0x05,
                .xtal_freq_count = 0x7F,
                .debounce = 0x7EF4,
                .pdtrk_count = 5,
        },
        {
                .freq = 19200000,
                .enable_delay = 0x03,
                .stable_count = 0x4B,
                .active_delay = 0x06,
                .xtal_freq_count = 0xBB,
                .debounce = 0xBB80,
                .pdtrk_count = 7,
        },
        {
                .freq = 26000000,
                .enable_delay = 0x04,
                .stable_count = 0x66,
                .active_delay = 0x09,
                .xtal_freq_count = 0xFE,
                .debounce = 0xFDE8,
                .pdtrk_count = 9,
        },
        {
                .freq = 38400000,
                .enable_delay = 0x00,
                .stable_count = 0x00,
                .active_delay = 0x18,
                .xtal_freq_count = 0x177,
                .debounce = 0xBB80,
                .pdtrk_count = 0xA,
        },
};

static struct tegra_xtal_freq uhsic_freq_table[] = {
        {
                .freq = 12000000,
                .enable_delay = 0x02,
                .stable_count = 0x2F,
                .active_delay = 0x0,
                .xtal_freq_count = 0x1CA,
        },
        {
                .freq = 13000000,
                .enable_delay = 0x02,
                .stable_count = 0x33,
                .active_delay = 0x0,
                .xtal_freq_count = 0x1F0,
        },
        {
                .freq = 19200000,
                .enable_delay = 0x03,
                .stable_count = 0x4B,
                .active_delay = 0x0,
                .xtal_freq_count = 0x2DD,
        },
        {
                .freq = 26000000,
                .enable_delay = 0x04,
                .stable_count = 0x66,
                .active_delay = 0x0,
                .xtal_freq_count = 0x3E0,
        },
        {
                .freq = 38400000,
                .enable_delay = 0x00,
                .stable_count = 0x00,
                .active_delay = 0x18,
                .xtal_freq_count = 0x177,
        },
};

static void pmc_init(struct tegra_usb_phy *phy)
{
        pmc_data[phy->inst].instance = phy->inst;
        pmc_data[phy->inst].phy_type = phy->pdata->phy_intf;
        pmc_data[phy->inst].controller_type = TEGRA_USB_2_0;
        pmc_data[phy->inst].usb_base = phy->regs;
        tegra_usb_pmc_init(&pmc_data[phy->inst]);
}

static int _usb_phy_init(struct tegra_usb_phy *phy)
{
        unsigned long val;
        void __iomem *base = phy->regs;

        DBG("%s(%d) inst:[%d]\n", __func__, __LINE__, phy->inst);

        val = readl(base + HOSTPC1_DEVLC);
        val &= ~HOSTPC1_DEVLC_STS;
        writel(val, base + HOSTPC1_DEVLC);

        val = readl(base + USB_IF_SPARE);
        val |= USB_HS_RSM_EOP_EN;
        val |= USB_PORT_SUSPEND_EN;
        writel(val, base + USB_IF_SPARE);

        if (phy->pdata->unaligned_dma_buf_supported == true) {
                val = readl(base + USB_NEW_CONTROL);
                val |= USB_COHRENCY_EN;
                val |= USB_MEM_ALLIGNMENT_MUX_EN;
                writel(val, base + USB_NEW_CONTROL);
        }
        val =  readl(base + TEGRA_STREAM_DISABLE);
        if (!tegra_platform_is_silicon())
                val |= TEGRA_STREAM_DISABLE_OFFSET;
        else
                val &= ~TEGRA_STREAM_DISABLE_OFFSET;
        writel(val , base + TEGRA_STREAM_DISABLE);

        return 0;
}

static void usb_phy_fence_read(struct tegra_usb_phy *phy)
{
        /* Fence read for coherency of AHB master intiated writes */
        if (phy->inst == 0)
                readb(IO_ADDRESS(IO_PPCS_PHYS + USB1_PREFETCH_ID));
        else if (phy->inst == 1)
                readb(IO_ADDRESS(IO_PPCS_PHYS + USB2_PREFETCH_ID));
        else if (phy->inst == 2)
                readb(IO_ADDRESS(IO_PPCS_PHYS + USB3_PREFETCH_ID));
        return;
}

static int usb_phy_reset(struct tegra_usb_phy *phy)
{
        unsigned long val;
        void __iomem *base = phy->regs;

        DBG("%s(%d) inst:[%d]\n", __func__, __LINE__, phy->inst);

        if (!tegra_platform_is_silicon()) {
                val =  readl(base + TEGRA_STREAM_DISABLE);
                val |= TEGRA_STREAM_DISABLE_OFFSET;
                writel(val , base + TEGRA_STREAM_DISABLE);
        }
        val = readl(base + USB_TXFILLTUNING);
        if ((val & USB_FIFO_TXFILL_MASK) != USB_FIFO_TXFILL_THRES(0x10)) {
                val = USB_FIFO_TXFILL_THRES(0x10);
                writel(val, base + USB_TXFILLTUNING);
        }

return 0;
}

static bool utmi_phy_remotewake_detected(struct tegra_usb_phy *phy)
{
        void __iomem *base = phy->regs;
        unsigned  int inst = phy->inst;
        u32 val;

        DBG("%s(%d) inst:[%d]\n", __func__, __LINE__, phy->inst);
        val = readl(base + UTMIP_PMC_WAKEUP0);
        if (val & EVENT_INT_ENB) {
                val = tegra_usb_pmc_reg_read(UTMIP_STATUS);
                if (UTMIP_WAKE_ALARM(inst) & val) {
                        tegra_usb_pmc_reg_update(PMC_SLEEP_CFG,
                                UTMIP_WAKE_VAL(inst, 0xF),
                                UTMIP_WAKE_VAL(inst, WAKE_VAL_NONE));

                        tegra_usb_pmc_reg_update(PMC_TRIGGERS, 0,
                                UTMIP_CLR_WAKE_ALARM(inst));

                        val = readl(base + UTMIP_PMC_WAKEUP0);
                        val &= ~EVENT_INT_ENB;
                        writel(val, base + UTMIP_PMC_WAKEUP0);

                        val = tegra_usb_pmc_reg_read(UTMIP_STATUS);
                        if (phy->port_speed < USB_PHY_PORT_SPEED_UNKNOWN)
                                phy->pmc_remote_wakeup = true;
                        else
                                phy->pmc_hotplug_wakeup = true;

                        DBG("%s: utmip PMC interrupt detected\n", __func__);
                        return true;
                }
        }
        return false;
}

static int usb_phy_bringup_host_controller(struct tegra_usb_phy *phy)
{
        unsigned long val;
        void __iomem *base = phy->regs;

        DBG("%s(%d) inst:[%d]\n", __func__, __LINE__, phy->inst);
        PHY_DBG("[%d] USB_USBSTS[0x%x] USB_PORTSC[0x%x] port_speed[%d]\n",
        __LINE__, readl(base + USB_USBSTS), readl(base + USB_PORTSC),
                                                        phy->port_speed);

        /* Device is plugged in when system is in LP0 */
        /* Bring up the controller from LP0*/
        val = readl(base + USB_USBCMD);
        val |= USB_CMD_RESET;
        writel(val, base + USB_USBCMD);

        if (usb_phy_reg_status_wait(base + USB_USBCMD,
                USB_CMD_RESET, 0, 2500) < 0) {
                pr_err("%s: timeout waiting for reset\n", __func__);
        }

        val = readl(base + USB_USBMODE);
        val &= ~USB_USBMODE_MASK;
        val |= USB_USBMODE_HOST;
        writel(val, base + USB_USBMODE);
        val = readl(base + HOSTPC1_DEVLC);
        val &= ~HOSTPC1_DEVLC_PTS(~0);

        if (phy->pdata->phy_intf == TEGRA_USB_PHY_INTF_HSIC)
                val |= HOSTPC1_DEVLC_PTS(HOSTPC1_DEVLC_PTS_HSIC);
        else
                val |= HOSTPC1_DEVLC_STS;
        writel(val, base + HOSTPC1_DEVLC);

        /* Enable Port Power */
        val = readl(base + USB_PORTSC);
        val |= USB_PORTSC_PP;
        writel(val, base + USB_PORTSC);
        udelay(10);

        /* Check if the phy resume from LP0. When the phy resume from LP0
         * USB register will be reset.to zero */
        if (!readl(base + USB_ASYNCLISTADDR)) {
                /* Program the field PTC based on the saved speed mode */
                val = readl(base + USB_PORTSC);
                val &= ~USB_PORTSC_PTC(~0);
                if ((phy->port_speed == USB_PHY_PORT_SPEED_HIGH) ||
                        (phy->pdata->phy_intf == TEGRA_USB_PHY_INTF_HSIC))
                        val |= USB_PORTSC_PTC(5);
                else if (phy->port_speed == USB_PHY_PORT_SPEED_FULL)
                        val |= USB_PORTSC_PTC(6);
                else if (phy->port_speed == USB_PHY_PORT_SPEED_LOW)
                        val |= USB_PORTSC_PTC(7);
                writel(val, base + USB_PORTSC);
                udelay(10);

                /* Disable test mode by setting PTC field to NORMAL_OP */
                val = readl(base + USB_PORTSC);
                val &= ~USB_PORTSC_PTC(~0);
                writel(val, base + USB_PORTSC);
                udelay(10);
        }

        /* Poll until CCS is enabled */
        if (usb_phy_reg_status_wait(base + USB_PORTSC, USB_PORTSC_CCS,
                                                 USB_PORTSC_CCS, 2000)) {
                pr_err("%s: timeout waiting for USB_PORTSC_CCS\n", __func__);
        }

        /* Poll until PE is enabled */
        if (usb_phy_reg_status_wait(base + USB_PORTSC, USB_PORTSC_PE,
                                                 USB_PORTSC_PE, 2000)) {
                pr_err("%s: timeout waiting for USB_PORTSC_PE\n", __func__);
        }

        /* Clear the PCI status, to avoid an interrupt taken upon resume */
        val = readl(base + USB_USBSTS);
        val |= USB_USBSTS_PCI;
        writel(val, base + USB_USBSTS);

        phy->ctrlr_suspended = false;
        if (!phy->pmc_remote_wakeup) {
                /* Put controller in suspend mode by writing 1
                 * to SUSP bit of PORTSC */
                val = readl(base + USB_PORTSC);
                if ((val & USB_PORTSC_PP) && (val & USB_PORTSC_PE)) {
                        val |= USB_PORTSC_SUSP;
                        writel(val, base + USB_PORTSC);
                        phy->ctrlr_suspended = true;
                        /* Wait until port suspend completes */
                        if (usb_phy_reg_status_wait(base + USB_PORTSC,
                                USB_PORTSC_SUSP, USB_PORTSC_SUSP, 4000)) {
                                pr_err("%s: timeout waiting for PORT_SUSPEND\n",
                                        __func__);
                        }
                }
        }
        PHY_DBG("[%d] USB_USBSTS[0x%x] USB_PORTSC[0x%x] port_speed[%d]\n",
                __LINE__, readl(base + USB_USBSTS), readl(base + USB_PORTSC),
                phy->port_speed);

        DBG("USB_USBSTS[0x%x] USB_PORTSC[0x%x]\n",
                        readl(base + USB_USBSTS), readl(base + USB_PORTSC));
        return 0;
}

static unsigned int utmi_phy_xcvr_setup_value(struct tegra_usb_phy *phy)
{
        struct tegra_utmi_config *cfg = &phy->pdata->u_cfg.utmi;
        signed long val;

        DBG("%s(%d) inst:[%d]\n", __func__, __LINE__, phy->inst);

        if (cfg->xcvr_use_fuses) {
                if (phy->inst == 0)
                        val = XCVR_SETUP_P0(tegra_fuse_readl(FUSE_USB_CALIB_0));
                else if (phy->inst == 1)
                        val = XCVR_SETUP_P1(tegra_fuse_readl(FUSE_USB_CALIB_0));
                else
                        val = XCVR_SETUP_P2(tegra_fuse_readl(FUSE_USB_CALIB_0));

                if (cfg->xcvr_use_lsb) {
                        val = min((unsigned int) ((val & XCVR_SETUP_LSB_MASK)
                                + cfg->xcvr_setup_offset),
                                (unsigned int) XCVR_SETUP_LSB_MAX_VAL);
                        val |= (cfg->xcvr_setup & XCVR_SETUP_MSB_MASK);
                } else {
                        if (cfg->xcvr_setup_offset <= UTMIP_XCVR_MAX_OFFSET)
                                val = val + cfg->xcvr_setup_offset;

                        if (val > UTMIP_XCVR_SETUP_MAX_VALUE) {
                                val = UTMIP_XCVR_SETUP_MAX_VALUE;
                                pr_info("%s: reset XCVR_SETUP to max value\n",
                                                __func__);
                        } else if (val < UTMIP_XCVR_SETUP_MIN_VALUE) {
                                val = UTMIP_XCVR_SETUP_MIN_VALUE;
                                pr_info("%s: reset XCVR_SETUP to min value\n",
                                                __func__);
                        }
                }
        } else {
                val = cfg->xcvr_setup;
        }

        return (unsigned int) val;
}

static int utmi_phy_open(struct tegra_usb_phy *phy)
{
        struct tegra_usb_pmc_data *pmc = &pmc_data[phy->inst];

        unsigned long parent_rate;
        int i;

        DBG("%s(%d) inst:[%d]\n", __func__, __LINE__, phy->inst);

        phy->utmi_pad_clk = clk_get_sys("utmip-pad", NULL);
        if (IS_ERR(phy->utmi_pad_clk)) {
                pr_err("%s: can't get utmip pad clock\n", __func__);
                return PTR_ERR(phy->utmi_pad_clk);
        }
        pmc_init(phy);

        phy->utmi_xcvr_setup = utmi_phy_xcvr_setup_value(phy);

        if (tegra_platform_is_silicon()) {
                parent_rate = clk_get_rate(clk_get_parent(phy->pllu_clk));
                for (i = 0; i < ARRAY_SIZE(utmip_freq_table); i++) {
                        if (utmip_freq_table[i].freq == parent_rate) {
                                phy->freq = &utmip_freq_table[i];
                                break;
                        }
                }
                if (!phy->freq) {
                        pr_err("invalid pll_u parent rate %ld\n", parent_rate);
                        return -EINVAL;
                }
        }

        /* Power-up the VBUS, ID detector for UTMIP PHY */
        if (phy->pdata->id_det_type == TEGRA_USB_ID)
                tegra_usb_pmc_reg_update(PMC_USB_AO,
                        PMC_USB_AO_VBUS_WAKEUP_PD_P0 | PMC_USB_AO_ID_PD_P0, 0);
        else
                tegra_usb_pmc_reg_update(PMC_USB_AO,
                        PMC_USB_AO_VBUS_WAKEUP_PD_P0, PMC_USB_AO_ID_PD_P0);

        pmc->pmc_ops->powerup_pmc_wake_detect(pmc);

        return 0;
}

static void utmi_phy_close(struct tegra_usb_phy *phy)
{
        unsigned long val;
        void __iomem *base = phy->regs;
        struct tegra_usb_pmc_data *pmc = &pmc_data[phy->inst];

        DBG("%s inst:[%d]\n", __func__, phy->inst);

        /* Disable PHY clock valid interrupts while going into suspend*/
        if (phy->hot_plug) {
                val = readl(base + USB_SUSP_CTRL);
                val &= ~USB_PHY_CLK_VALID_INT_ENB;
                writel(val, base + USB_SUSP_CTRL);
        }

        val = tegra_usb_pmc_reg_read(PMC_SLEEP_CFG);
        if (val & UTMIP_MASTER_ENABLE(phy->inst)) {
                pmc->pmc_ops->disable_pmc_bus_ctrl(pmc, 0);

                phy->pmc_remote_wakeup = false;
                phy->pmc_hotplug_wakeup = false;
                PHY_DBG("%s DISABLE_PMC inst = %d\n", __func__, phy->inst);
        }

        clk_put(phy->utmi_pad_clk);
}

static int utmi_phy_irq(struct tegra_usb_phy *phy)
{
        void __iomem *base = phy->regs;
        unsigned long val = 0;
        bool remote_wakeup = false;
        int irq_status = IRQ_HANDLED;

        if (phy->phy_clk_on) {
                DBG("%s(%d) inst:[%d]\n", __func__, __LINE__, phy->inst);
                DBG("USB_USBSTS[0x%x] USB_PORTSC[0x%x]\n",
                        readl(base + USB_USBSTS), readl(base + USB_PORTSC));
                DBG("USB_USBMODE[0x%x] USB_USBCMD[0x%x]\n",
                        readl(base + USB_USBMODE), readl(base + USB_USBCMD));
        }
        if (!phy->pdata->unaligned_dma_buf_supported)
                usb_phy_fence_read(phy);
        /* check if it is pmc wake event */
        if (utmi_phy_remotewake_detected(phy))
                remote_wakeup = phy->pmc_remote_wakeup;

        if (phy->hot_plug) {
                val = readl(base + USB_SUSP_CTRL);
                if ((val  & USB_PHY_CLK_VALID_INT_STS) &&
                        (val  & USB_PHY_CLK_VALID_INT_ENB)) {
                        val &= ~USB_PHY_CLK_VALID_INT_ENB |
                                        USB_PHY_CLK_VALID_INT_STS;
                        writel(val , (base + USB_SUSP_CTRL));

                        /* In case of remote wakeup PHY clock will not up
                         * immediately, so should not access any controller
                         * register but normal plug-in/plug-out should be
                         * executed
                         */
                        if (!remote_wakeup) {
                                val = readl(base + USB_USBSTS);
                                if (!(val  & USB_USBSTS_PCI)) {
                                        irq_status = IRQ_NONE;
                                        goto exit;
                                }

                                val = readl(base + USB_PORTSC);
                                if (val & USB_PORTSC_CCS)
                                        val &= ~USB_PORTSC_WKCN;
                                else
                                        val &= ~USB_PORTSC_WKDS;
                                val &= ~USB_PORTSC_RWC_BITS;
                                writel(val , (base + USB_PORTSC));
                        }
                } else if (!phy->phy_clk_on) {
                        if (remote_wakeup)
                                irq_status = IRQ_HANDLED;
                        else
                                irq_status = IRQ_NONE;
                        goto exit;
                }
        }
exit:
        return irq_status;
}

static void utmi_phy_enable_obs_bus(struct tegra_usb_phy *phy)
{
        unsigned long val;
        void __iomem *base = phy->regs;

        /* (2LS WAR)is not required for LS and FS devices and is only for HS */
        /* Force DP/DM pulldown active for Host mode */
        val = readl(base + UTMIP_MISC_CFG0);
        val |= FORCE_PULLDN_DM | FORCE_PULLDN_DP |
                COMB_TERMS | ALWAYS_FREE_RUNNING_TERMS;
        writel(val, base + UTMIP_MISC_CFG0);
        val = readl(base + UTMIP_MISC_CFG0);
        val &= ~UTMIP_DPDM_OBSERVE_SEL(~0);
        if (phy->port_speed == USB_PHY_PORT_SPEED_LOW)
                val |= UTMIP_DPDM_OBSERVE_SEL_FS_J;
        else
                val |= UTMIP_DPDM_OBSERVE_SEL_FS_K;
        writel(val, base + UTMIP_MISC_CFG0);
        udelay(1);

        val = readl(base + UTMIP_MISC_CFG0);
        val |= UTMIP_DPDM_OBSERVE;
        writel(val, base + UTMIP_MISC_CFG0);
        udelay(10);
        DBG("%s(%d) Enable OBS bus\n", __func__, __LINE__);
        PHY_DBG("ENABLE_OBS_BUS\n");
}

static int utmi_phy_disable_obs_bus(struct tegra_usb_phy *phy)
{
        void __iomem *base = phy->regs;
        unsigned long val, port_speed;
        unsigned long flags;
        /* check if OBS bus is already enabled */
        val = readl(base + UTMIP_MISC_CFG0);
        if (val & UTMIP_DPDM_OBSERVE) {
                PHY_DBG("DISABLE_OBS_BUS\n");

                /* disable ALL interrupts on current CPU */
                local_irq_save(flags);

                /* Change the UTMIP OBS bus to drive SE0 */
                val = readl(base + UTMIP_MISC_CFG0);
                val &= ~UTMIP_DPDM_OBSERVE_SEL(~0);
                val |= UTMIP_DPDM_OBSERVE_SEL_FS_SE0;
                writel(val, base + UTMIP_MISC_CFG0);

                port_speed = (readl(base + USB_PORTSC) >> 26) &
                        USB_PORTSC_PSPD_MASK;
                if (port_speed == USB_PHY_PORT_SPEED_FULL) {
                        val = readl(base + UTMIP_MISC_CFG0);
                        val |= UTMIP_DPDM_OBSERVE_SEL_FS_J;
                        writel(val, base + UTMIP_MISC_CFG0);
                }

                /* Release UTMIP OBS bus */
                val = readl(base + UTMIP_MISC_CFG0);
                val &= ~UTMIP_DPDM_OBSERVE;
                writel(val, base + UTMIP_MISC_CFG0);

                /* Release DP/DM pulldown for Host mode */
                val = readl(base + UTMIP_MISC_CFG0);
                val &= ~(FORCE_PULLDN_DM | FORCE_PULLDN_DP |
                COMB_TERMS | ALWAYS_FREE_RUNNING_TERMS);
                writel(val, base + UTMIP_MISC_CFG0);

                val = readl(base + USB_USBCMD);
                val |= USB_USBCMD_RS;
                writel(val, base + USB_USBCMD);
                /* restore ALL interrupts on current CPU */
                local_irq_restore(flags);

                if (usb_phy_reg_status_wait(base + USB_USBCMD, USB_USBCMD_RS,
                        USB_USBCMD_RS, 2000)) {
                        pr_err("%s: timeout waiting for USB_USBCMD_RS\n",
                                __func__);
                        return -ETIMEDOUT;
                }
        }
        return 0;
}

static int utmi_phy_post_resume(struct tegra_usb_phy *phy)
{
        unsigned long val;
        unsigned  int inst = phy->inst;
        struct tegra_usb_pmc_data *pmc = &pmc_data[phy->inst];

        DBG("%s(%d) inst:[%d]\n", __func__, __LINE__, phy->inst);
        if (phy->port_speed == USB_PHY_PORT_SPEED_FULL) {
                val = tegra_usb_pmc_reg_read(PMC_SLEEP_CFG);
                /* if PMC is not disabled by now then disable it */
                if (val & UTMIP_MASTER_ENABLE(inst))
                        pmc->pmc_ops->disable_pmc_bus_ctrl(pmc, 0);

                utmi_phy_disable_obs_bus(phy);
        }
        return 0;
}

static int utmi_phy_pre_resume(struct tegra_usb_phy *phy, bool remote_wakeup)
{
        unsigned long val;
        unsigned  int inst = phy->inst;
        struct tegra_usb_pmc_data *pmc = &pmc_data[phy->inst];

        DBG("%s(%d) inst:[%d]\n", __func__, __LINE__, phy->inst);
        val = tegra_usb_pmc_reg_read(PMC_SLEEP_CFG);
        if (val & UTMIP_MASTER_ENABLE(inst)) {
                if (!remote_wakeup) {
                        pmc->pmc_ops->disable_pmc_bus_ctrl(pmc, 0);
                        phy->pmc_remote_wakeup = false;
                        phy->pmc_hotplug_wakeup = false;
                        PHY_DBG("%s DISABLE_PMC inst = %d\n", __func__, inst);
                }
        } else {
                if (phy->port_speed == USB_PHY_PORT_SPEED_FULL)
                        utmi_phy_enable_obs_bus(phy);
        }

        return 0;
}

static int utmi_phy_power_off(struct tegra_usb_phy *phy)
{
        unsigned long val;
        void __iomem *base = phy->regs;
        struct tegra_usb_pmc_data *pmc = &pmc_data[phy->inst];

        PHY_DBG("%s(%d) inst:[%d] BEGIN\n", __func__, __LINE__, phy->inst);
        if (!phy->phy_clk_on) {
                PHY_DBG("%s(%d) inst:[%d] phy clk is already off\n",
                                        __func__, __LINE__, phy->inst);
                return 0;
        }

        if (phy->pdata->op_mode == TEGRA_USB_OPMODE_DEVICE) {
                pmc_data[phy->inst].is_xhci = phy->pdata->u_data.dev.is_xhci;
                pmc->pmc_ops->powerdown_pmc_wake_detect(pmc);
                val = readl(base + USB_SUSP_CTRL);
                val &= ~USB_WAKEUP_DEBOUNCE_COUNT(~0);
                val |= USB_WAKE_ON_CNNT_EN_DEV | USB_WAKEUP_DEBOUNCE_COUNT(5);
                writel(val, base + USB_SUSP_CTRL);

                val = readl(base + UTMIP_BAT_CHRG_CFG0);
                val |= UTMIP_PD_CHRG;
                writel(val, base + UTMIP_BAT_CHRG_CFG0);
        } else {
                phy->port_speed = (readl(base + HOSTPC1_DEVLC) >> 25) &
                                HOSTPC1_DEVLC_PSPD_MASK;

                /* Disable interrupts */
                writel(0, base + USB_USBINTR);

                /* Clear the run bit to stop SOFs when USB is suspended */
                val = readl(base + USB_USBCMD);
                val &= ~USB_USBCMD_RS;
                writel(val, base + USB_USBCMD);

                if (usb_phy_reg_status_wait(base + USB_USBSTS, USB_USBSTS_HCH,
                                                 USB_USBSTS_HCH, 2000)) {
                        pr_err("%s: timeout waiting for USB_USBSTS_HCH\n"
                                                        , __func__);
                }

                pmc_data[phy->inst].port_speed = (readl(base +
                                HOSTPC1_DEVLC) >> 25) &
                                HOSTPC1_DEVLC_PSPD_MASK;

                if (pmc_data[phy->inst].port_speed <
                                        USB_PMC_PORT_SPEED_UNKNOWN)
                        phy->pmc_remote_wakeup = false;
                else
                        phy->pmc_hotplug_wakeup = false;

                if (phy->pdata->port_otg) {
                        bool id_present = false;
                        val = readl(base + USB_PHY_VBUS_WAKEUP_ID);
#ifdef CONFIG_ARCH_TEGRA_21x_SOC
                        id_present = (val & USB_ID_SW_VALUE) ? false : true;
#else
                        id_present = (val & USB_ID_STATUS) ? false : true;
#endif
                        if (id_present)
                                pmc->pmc_ops->setup_pmc_wake_detect(pmc);
                } else {
                        pmc->pmc_ops->setup_pmc_wake_detect(pmc);
                }

                val = readl(base + UTMIP_PMC_WAKEUP0);
                val |= EVENT_INT_ENB;
                writel(val, base + UTMIP_PMC_WAKEUP0);
                PHY_DBG("%s ENABLE_PMC inst = %d\n", __func__, phy->inst);

                val = readl(base + USB_SUSP_CTRL);
                val &= ~USB_WAKE_ON_CNNT_EN_DEV;
                writel(val, base + USB_SUSP_CTRL);
        }

        if (!phy->hot_plug) {
                val = readl(base + UTMIP_XCVR_CFG0);
                val |= (UTMIP_FORCE_PD_POWERDOWN | UTMIP_FORCE_PD2_POWERDOWN |
                         UTMIP_FORCE_PDZI_POWERDOWN);
                writel(val, base + UTMIP_XCVR_CFG0);
        }

        val = readl(base + UTMIP_XCVR_CFG1);
        val |= UTMIP_FORCE_PDDISC_POWERDOWN | UTMIP_FORCE_PDCHRP_POWERDOWN |
                   UTMIP_FORCE_PDDR_POWERDOWN;
        writel(val, base + UTMIP_XCVR_CFG1);

        val = readl(base + UTMIP_BIAS_CFG1);
        val |= UTMIP_BIAS_PDTRK_COUNT(0x5);
        writel(val, base + UTMIP_BIAS_CFG1);

        if (phy->hot_plug) {
                bool enable_hotplug = true;
                /* if it is OTG port then make sure to enable hot-plug feature
                   only if host adaptor is connected, i.e id is low */
                if (phy->pdata->port_otg) {
                        val = readl(base + USB_PHY_VBUS_WAKEUP_ID);
                        enable_hotplug = (val & USB_ID_STATUS) ? false : true;
                }
                if (enable_hotplug) {
                        /* Enable wakeup event of device plug-in/plug-out */
                        val = readl(base + USB_PORTSC);
                        if (val & USB_PORTSC_CCS)
                                val |= USB_PORTSC_WKDS;
                        else
                                val |= USB_PORTSC_WKCN;
                        writel(val, base + USB_PORTSC);

                        if (val & USB_PORTSC_CCS) {
                                val = readl(base + USB_SUSP_CTRL);
                                val &= ~USB_PHY_CLK_VALID_INT_ENB;
                        } else {
                                val = readl(base + USB_SUSP_CTRL);
                                val |= USB_PHY_CLK_VALID_INT_ENB;
                        }
                        writel(val, base + USB_SUSP_CTRL);
                } else {
                        /* Disable PHY clock valid interrupts while going into suspend*/
                        val = readl(base + USB_SUSP_CTRL);
                        val &= ~USB_PHY_CLK_VALID_INT_ENB;
                        writel(val, base + USB_SUSP_CTRL);
                }
        }

        /* Disable PHY clock */
        val = readl(base + HOSTPC1_DEVLC);
        val |= HOSTPC1_DEVLC_PHCD;
        writel(val, base + HOSTPC1_DEVLC);

        if (!phy->hot_plug) {
                val = readl(base + USB_SUSP_CTRL);
                val |= UTMIP_RESET;
                writel(val, base + USB_SUSP_CTRL);
        }

        utmi_phy_pad_disable();
        utmi_phy_iddq_override(true);

        phy->phy_clk_on = false;
        phy->hw_accessible = false;

        PHY_DBG("%s(%d) inst:[%d] END\n", __func__, __LINE__, phy->inst);

        return 0;
}


static int utmi_phy_power_on(struct tegra_usb_phy *phy)
{
        unsigned long val;
        void __iomem *base = phy->regs;
#ifdef CONFIG_ARCH_TEGRA_11x_SOC
        void __iomem *padctl_base = IO_ADDRESS(TEGRA_XUSB_PADCTL_BASE);
#endif
        struct tegra_utmi_config *config = &phy->pdata->u_cfg.utmi;
        struct tegra_usb_pmc_data *pmc = &pmc_data[phy->inst];

        PHY_DBG("%s(%d) inst:[%d]\n", __func__, __LINE__, phy->inst);
        if (phy->phy_clk_on) {
                PHY_DBG("%s(%d) inst:[%d] phy clk is already On\n",
                                        __func__, __LINE__, phy->inst);
                return 0;
        }
        val = readl(base + USB_SUSP_CTRL);
        val |= UTMIP_RESET;
        writel(val, base + USB_SUSP_CTRL);

        val = readl(base + UTMIP_TX_CFG0);
        val |= UTMIP_FS_PREABMLE_J;
        writel(val, base + UTMIP_TX_CFG0);

        val = readl(base + USB_USBMODE);
        val &= ~USB_USBMODE_MASK;
        if (phy->pdata->op_mode == TEGRA_USB_OPMODE_HOST)
                val |= USB_USBMODE_HOST;
        else
                val |= USB_USBMODE_DEVICE;
        writel(val, base + USB_USBMODE);

        val = readl(base + UTMIP_HSRX_CFG0);
        val &= ~(UTMIP_IDLE_WAIT(~0) | UTMIP_ELASTIC_LIMIT(~0));
        val |= UTMIP_IDLE_WAIT(config->idle_wait_delay);
        val |= UTMIP_ELASTIC_LIMIT(config->elastic_limit);
        writel(val, base + UTMIP_HSRX_CFG0);

        val = readl(base + UTMIP_HSRX_CFG1);
        val &= ~UTMIP_HS_SYNC_START_DLY(~0);
        val |= UTMIP_HS_SYNC_START_DLY(config->hssync_start_delay);
        writel(val, base + UTMIP_HSRX_CFG1);

        if (tegra_platform_is_silicon()) {
                val = readl(base + UTMIP_DEBOUNCE_CFG0);
                val &= ~UTMIP_BIAS_DEBOUNCE_A(~0);
                val |= UTMIP_BIAS_DEBOUNCE_A(phy->freq->debounce);
                writel(val, base + UTMIP_DEBOUNCE_CFG0);
        }

        val = readl(base + UTMIP_MISC_CFG0);
        val &= ~UTMIP_SUSPEND_EXIT_ON_EDGE;
        writel(val, base + UTMIP_MISC_CFG0);

        if (phy->pdata->op_mode == TEGRA_USB_OPMODE_DEVICE) {
                val = readl(base + USB_SUSP_CTRL);
                val &= ~(USB_WAKE_ON_CNNT_EN_DEV | USB_WAKE_ON_DISCON_EN_DEV);
                writel(val, base + USB_SUSP_CTRL);

                val = readl(base + UTMIP_BAT_CHRG_CFG0);
                val &= ~UTMIP_PD_CHRG;
                writel(val, base + UTMIP_BAT_CHRG_CFG0);
        } else {
                val = readl(base + UTMIP_BAT_CHRG_CFG0);
                val |= UTMIP_PD_CHRG;
                writel(val, base + UTMIP_BAT_CHRG_CFG0);
        }

        utmi_phy_pad_enable();

        val = readl(base + UTMIP_XCVR_CFG0);
        val &= ~(UTMIP_XCVR_LSBIAS_SEL | UTMIP_FORCE_PD_POWERDOWN |
                 UTMIP_FORCE_PD2_POWERDOWN | UTMIP_FORCE_PDZI_POWERDOWN |
                 UTMIP_XCVR_SETUP(~0) | UTMIP_XCVR_LSFSLEW(~0) |
                 UTMIP_XCVR_LSRSLEW(~0) | UTMIP_XCVR_HSSLEW_MSB(~0) |
                 UTMIP_XCVR_SETUP_MSB(~0));
        val |= UTMIP_XCVR_SETUP(phy->utmi_xcvr_setup);
        val |= UTMIP_XCVR_SETUP_MSB(XCVR_SETUP_MSB_CALIB(phy->utmi_xcvr_setup));
        val |= UTMIP_XCVR_LSFSLEW(config->xcvr_lsfslew);
        val |= UTMIP_XCVR_LSRSLEW(config->xcvr_lsrslew);
        if (!config->xcvr_use_lsb) {
                if (!config->xcvr_hsslew_msb)
                        val |= UTMIP_XCVR_HSSLEW_MSB(3);
                else
                        val |= UTMIP_XCVR_HSSLEW_MSB(config->xcvr_hsslew_msb);
        }
        if (config->xcvr_hsslew_lsb)
                val |= UTMIP_XCVR_HSSLEW_LSB(config->xcvr_hsslew_lsb);
        writel(val, base + UTMIP_XCVR_CFG0);

        val = readl(base + UTMIP_XCVR_CFG1);
        val &= ~(UTMIP_FORCE_PDDISC_POWERDOWN | UTMIP_FORCE_PDCHRP_POWERDOWN |
                 UTMIP_FORCE_PDDR_POWERDOWN | UTMIP_XCVR_TERM_RANGE_ADJ(~0));
        val |= UTMIP_XCVR_TERM_RANGE_ADJ(config->term_range_adj);
        writel(val, base + UTMIP_XCVR_CFG1);

#ifdef CONFIG_ARCH_TEGRA_21x_SOC
        val = readl(base + UTMIP_BIAS_CFG0);
        val &= ~UTMIP_HSSQUELCH_LEVEL(~0);
        val |= UTMIP_HSSQUELCH_LEVEL(2);
        writel(val, base + UTMIP_BIAS_CFG0);

        val = readl(base + UTMIP_BIAS_CFG2);
        val &= ~UTMIP_HSSQUELCH_LEVEL_NEW(~0);
        val |= UTMIP_HSSQUELCH_LEVEL_NEW(2);
        writel(val, base + UTMIP_BIAS_CFG2);

        /* 20soc process is not tolerant to 3.3v
         * activate protection circuits for usb2 pads
         */
        val = readl(base + UTMIP_XCVR_CFG2);
        val &= ~UTMIP_XCVR_VREG_MASK;
        if (phy->pdata->op_mode == TEGRA_USB_OPMODE_DEVICE)
                val |= UTMIP_XCVR_VREG_LEV_1P5V; /* sink cur */
        else
                val |= UTMIP_XCVR_VREG_FIX18; /* source cur */
        writel(val, base + UTMIP_XCVR_CFG2);
#endif
        if (tegra_platform_is_silicon()) {
                val = readl(base + UTMIP_BIAS_CFG1);
                val &= ~UTMIP_BIAS_PDTRK_COUNT(~0);
                val |= UTMIP_BIAS_PDTRK_COUNT(phy->freq->pdtrk_count);
                writel(val, base + UTMIP_BIAS_CFG1);
        }

        val = readl(base + UTMIP_SPARE_CFG0);
        val &= ~FUSE_SETUP_SEL;
#ifdef CONFIG_ARCH_TEGRA_21x_SOC
        val &= ~FUSE_SQUELCH_SEL;
        val &= ~FUSE_ATERM_SEL;
#else
        val |= FUSE_ATERM_SEL;
#endif
        writel(val, base + UTMIP_SPARE_CFG0);

        val = readl(base + USB_SUSP_CTRL);
        val |= UTMIP_PHY_ENABLE;
        writel(val, base + USB_SUSP_CTRL);

        val = readl(base + USB_SUSP_CTRL);
        val &= ~UTMIP_RESET;
        writel(val, base + USB_SUSP_CTRL);

        /* Bring UTMIPLL out of IDDQ mode while exiting from reset/suspend */
        utmi_phy_iddq_override(false);

        if (usb_phy_reg_status_wait(base + USB_SUSP_CTRL,
                USB_PHY_CLK_VALID, USB_PHY_CLK_VALID, 2600))
                pr_warn("%s: timeout waiting for phy to stabilize\n", __func__);

        val = readl(base + HOSTPC1_DEVLC);
        val &= ~HOSTPC1_DEVLC_PHCD;
        writel(val, base + HOSTPC1_DEVLC);

        utmi_phy_set_snps_trking_data();

        if (phy->inst == 2)
                writel(0, base + ICUSB_CTRL);

        val = readl(base + USB_USBMODE);
        val &= ~USB_USBMODE_MASK;
        if (phy->pdata->op_mode == TEGRA_USB_OPMODE_HOST)
                val |= USB_USBMODE_HOST;
        else
                val |= USB_USBMODE_DEVICE;
        writel(val, base + USB_USBMODE);

        val = readl(base + HOSTPC1_DEVLC);
        val &= ~HOSTPC1_DEVLC_PTS(~0);
        val |= HOSTPC1_DEVLC_STS;
        writel(val, base + HOSTPC1_DEVLC);

        if (phy->pdata->op_mode == TEGRA_USB_OPMODE_DEVICE) {
                pmc_data[phy->inst].is_xhci = phy->pdata->u_data.dev.is_xhci;
                pmc->pmc_ops->powerup_pmc_wake_detect(pmc);
        }

        if (!readl(base + USB_ASYNCLISTADDR))
                _usb_phy_init(phy);
        val = readl(base + USB_TXFILLTUNING);
        if ((val & USB_FIFO_TXFILL_MASK) !=
                USB_FIFO_TXFILL_THRES(0x10)) {
                val = USB_FIFO_TXFILL_THRES(0x10);
                writel(val, base + USB_TXFILLTUNING);
        }

        phy->phy_clk_on = true;
        phy->hw_accessible = true;

#ifdef CONFIG_ARCH_TEGRA_11x_SOC
        val = readl(padctl_base + PADCTL_SNPS_OC_MAP);
        val |= CONTROLLER_OC(phy->inst, 0x4);
        writel(val, padctl_base + PADCTL_SNPS_OC_MAP);

        val = readl(padctl_base + PADCTL_OC_DET);
        if (phy->inst == 0)
                val |= ENABLE0_OC_MAP(config->vbus_oc_map);
        if (phy->inst == 2)
                val |= ENABLE1_OC_MAP(config->vbus_oc_map);
        writel(val, padctl_base + PADCTL_OC_DET);
#endif

        PHY_DBG("%s(%d) End inst:[%d]\n", __func__, __LINE__, phy->inst);
        return 0;
}

static void utmi_phy_restore_start(struct tegra_usb_phy *phy)
{
        unsigned long val;
        int inst = phy->inst;
        struct tegra_usb_pmc_data *pmc = &pmc_data[phy->inst];

        DBG("%s(%d) inst:[%d]\n", __func__, __LINE__, phy->inst);
        val = tegra_usb_pmc_reg_read(UTMIP_STATUS);
        /* Check whether we wake up from the remote resume.
           For lp1 case, pmc is not responsible for waking the
           system, it's the flow controller and hence
           UTMIP_WALK_PTR_VAL(inst) will return 0.
           Also, for lp1 case phy->pmc_remote_wakeup will already be set
           to true by utmi_phy_irq() when the remote wakeup happens.
           Hence change the logic in the else part to enter only
           if phy->pmc_remote_wakeup is not set to true by the
           utmi_phy_irq(). */
        if (UTMIP_WALK_PTR_VAL(inst) & val) {
                phy->pmc_remote_wakeup = true;
        } else if (!phy->pmc_remote_wakeup) {
                val = tegra_usb_pmc_reg_read(PMC_SLEEP_CFG);
                if (val & UTMIP_MASTER_ENABLE(inst))
                        pmc->pmc_ops->disable_pmc_bus_ctrl(pmc, 0);
        }
        if (phy->port_speed == USB_PHY_PORT_SPEED_FULL)
                utmi_phy_enable_obs_bus(phy);

}

static void utmi_phy_restore_end(struct tegra_usb_phy *phy)
{
        unsigned long val, flags = 0;
        void __iomem *base = phy->regs;
        int wait_time_us = 25000; /* FPR should be set by this time */
        struct tegra_usb_pmc_data *pmc = &pmc_data[phy->inst];

        DBG("%s(%d) inst:[%d]\n", __func__, __LINE__, phy->inst);
        /* check whether we wake up from the remote resume */
        if (phy->pmc_remote_wakeup) {
                /* wait until SUSPEND and RESUME bit
                 * is cleared on remote resume */
                do {
                        val = readl(base + USB_PORTSC);
                        udelay(1);
                        if (wait_time_us == 0) {
                                PHY_DBG("%s PMC FPR" \
                                "timeout val = 0x%x instance = %d\n", \
                                __func__, (u32)val, phy->inst);
                                if (phy->port_speed ==
                                        USB_PHY_PORT_SPEED_FULL) {
                                        val = readl(base + UTMIP_PMC_WAKEUP0);
                                        val &= ~EVENT_INT_ENB;
                                        writel(val, base + UTMIP_PMC_WAKEUP0);
                                }
                                pmc->pmc_ops->disable_pmc_bus_ctrl(pmc, 0);
                                phy->pmc_remote_wakeup = false;
                                phy->pmc_hotplug_wakeup = false;

                                if (phy->port_speed == USB_PHY_PORT_SPEED_FULL)
                                        utmi_phy_post_resume(phy);
                                return;
                        }
                        wait_time_us--;
                } while (val & (USB_PORTSC_RESUME | USB_PORTSC_SUSP));

                /* Add delay sothat resume will be driven for more than 20 ms */
                if (phy->port_speed != USB_PHY_PORT_SPEED_FULL) {
                        usleep_range(10000, 11000);
                        local_irq_save(flags);
                        pmc->pmc_ops->disable_pmc_bus_ctrl(pmc, 1);
                        phy->pmc_remote_wakeup = false;
                        phy->pmc_hotplug_wakeup = false;
                        local_irq_restore(flags);
                        if (usb_phy_reg_status_wait(base + USB_USBCMD,
                                USB_USBCMD_RS, USB_USBCMD_RS, 2000))
                                pr_err(
                                "%s: timeout waiting for USB_USBCMD_RS\n",
                                __func__);
                } else {
                        usleep_range(25000, 26000);
                        local_irq_save(flags);
                        pmc->pmc_ops->disable_pmc_bus_ctrl(pmc, 0);
                        phy->pmc_remote_wakeup = false;
                        phy->pmc_hotplug_wakeup = false;
                        local_irq_restore(flags);
                }

                PHY_DBG("%s DISABLE_PMC inst = %d\n", __func__, phy->inst);

                /* Clear PCI and SRI bits to avoid an interrupt upon resume */
                val = readl(base + USB_USBSTS);
                writel(val, base + USB_USBSTS);
                /* wait to avoid SOF if there is any */
                if (usb_phy_reg_status_wait(base + USB_USBSTS,
                        USB_USBSTS_SRI, USB_USBSTS_SRI, 2500) < 0) {
                        pr_err("%s: timeout waiting for SOF\n", __func__);
                }
        } else {
                if (phy->port_speed != USB_PHY_PORT_SPEED_FULL) {
                        pmc->pmc_ops->disable_pmc_bus_ctrl(pmc, 0);
                        phy->pmc_remote_wakeup = false;
                        phy->pmc_hotplug_wakeup = false;
                        PHY_DBG("%s DISABLE_PMC inst = %d\n",
                                __func__, phy->inst);
                }
        }
        if (phy->port_speed == USB_PHY_PORT_SPEED_FULL)
                utmi_phy_post_resume(phy);
}

static int utmi_phy_resume(struct tegra_usb_phy *phy)
{
        int status = 0;
        unsigned long val;
        int port_connected = 0;
        int is_lp0;
        void __iomem *base = phy->regs;
        struct tegra_usb_pmc_data *pmc = &pmc_data[phy->inst];

        DBG("%s(%d) inst:[%d]\n", __func__, __LINE__, phy->inst);
        if (phy->pdata->op_mode == TEGRA_USB_OPMODE_HOST) {
                if (readl(base + USB_ASYNCLISTADDR) &&
                        !phy->pdata->u_data.host.power_off_on_suspend)
                        return 0;

                val = readl(base + USB_PORTSC);
                port_connected = val & USB_PORTSC_CCS;
                is_lp0 = !(readl(base + USB_ASYNCLISTADDR));

                if ((phy->port_speed < USB_PHY_PORT_SPEED_UNKNOWN) &&
                        (port_connected ^ is_lp0)) {
                        utmi_phy_restore_start(phy);
                        usb_phy_bringup_host_controller(phy);
                        utmi_phy_restore_end(phy);
                } else {
                        pmc->pmc_ops->disable_pmc_bus_ctrl(pmc, 0);
                        phy->pmc_remote_wakeup = false;
                        phy->pmc_hotplug_wakeup = false;

                        /* bring up the controller from suspend*/
                        val = readl(base + USB_USBCMD);
                        val |= USB_CMD_RESET;
                        writel(val, base + USB_USBCMD);

                        if (usb_phy_reg_status_wait(base + USB_USBCMD,
                                USB_CMD_RESET, 0, 2500) < 0) {
                                pr_err("%s: timeout waiting for reset\n", __func__);
                        }

                        val = readl(base + USB_USBMODE);
                        val &= ~USB_USBMODE_MASK;
                        val |= USB_USBMODE_HOST;
                        writel(val, base + USB_USBMODE);

                        val = readl(base + HOSTPC1_DEVLC);
                        val &= ~HOSTPC1_DEVLC_PTS(~0);
                        val |= HOSTPC1_DEVLC_STS;
                        writel(val, base + HOSTPC1_DEVLC);

                        writel(USB_USBCMD_RS, base + USB_USBCMD);

                        if (usb_phy_reg_status_wait(base + USB_USBCMD,
                                USB_USBCMD_RS, USB_USBCMD_RS, 2500) < 0) {
                                pr_err("%s: timeout waiting for run bit\n", __func__);
                        }

                        /* Enable Port Power */
                        val = readl(base + USB_PORTSC);
                        val |= USB_PORTSC_PP;
                        writel(val, base + USB_PORTSC);
                        udelay(10);

                        DBG("USB_USBSTS[0x%x] USB_PORTSC[0x%x]\n",
                        readl(base + USB_USBSTS), readl(base + USB_PORTSC));
                }
                val = readl(base + USB_TXFILLTUNING);
                if ((val & USB_FIFO_TXFILL_MASK) !=
                        USB_FIFO_TXFILL_THRES(0x10)) {
                        val = USB_FIFO_TXFILL_THRES(0x10);
                                writel(val, base + USB_TXFILLTUNING);
                }
        }

        return status;
}

static unsigned long utmi_phy_set_dp_dm_pull_up_down(struct tegra_usb_phy *phy,
                unsigned long pull_up_down_flags)
{
        unsigned long val;
        unsigned long org;
        void __iomem *base = phy->regs;

        org = readl(base + UTMIP_MISC_CFG0);

        val = org & ~MASK_ALL_PULLUP_PULLDOWN;
        val |= pull_up_down_flags;

        writel(val, base + UTMIP_MISC_CFG0);

        usleep_range(500, 2000);
        return org;
}

unsigned long utmi_phy_get_dp_dm_status(struct tegra_usb_phy *phy,
                unsigned long pull_up_down_flags)
{
        void __iomem *base = phy->regs;
        unsigned long org_flags;
        unsigned long ret;

        org_flags = utmi_phy_set_dp_dm_pull_up_down(phy, pull_up_down_flags);
        ret = USB_PORTSC_LINE_STATE(readl(base + USB_PORTSC));
        utmi_phy_set_dp_dm_pull_up_down(phy, org_flags);
        return ret;
}

static void disable_charger_detection(void __iomem *base)
{
        unsigned long val;

        /* Disable charger detection logic */
        val = readl(base + UTMIP_BAT_CHRG_CFG0);
        val &= ~(UTMIP_OP_SRC_EN | UTMIP_ON_SINK_EN);
        val &= ~(UTMIP_ON_SRC_EN | UTMIP_OP_SINK_EN);
        writel(val, base + UTMIP_BAT_CHRG_CFG0);

        /* Delay of 40 ms before we pull the D+ as per battery charger spec */
        msleep(TDPSRC_CON_MS);
}

/*
 * Per Battery Charging Specification 1.2  section 3.2.3:
 * We check Data Contact Detect (DCD) before we check the USB cable type.
 */
static bool utmi_phy_dcd_detect(struct tegra_usb_phy *phy)
{
        void __iomem *base = phy->regs;
        unsigned long val;
        unsigned long org_flags;
        bool ret;

        val = readl(base + UTMIP_BAT_CHRG_CFG0);
        /* inject IDP_SRC */
        val |= UTMIP_OP_I_SRC_EN;
        writel(val, base + UTMIP_BAT_CHRG_CFG0);
        /* enable pull down resistor RDM_DWN on D- */
        org_flags = utmi_phy_set_dp_dm_pull_up_down(phy,
                                DISABLE_PULLUP_DP | DISABLE_PULLUP_DM |
                                DISABLE_PULLDN_DP | FORCE_PULLDN_DM);
        usleep_range(20000, 30000);

        ret = false;
        if (0 == USB_PORTSC_LINE_STATE(readl(base + USB_PORTSC))) {
                /* minimum debounce time is 10mS per TDCD_DBNC */
                usleep_range(10000, 12000);
                if (0 == USB_PORTSC_LINE_STATE(readl(base + USB_PORTSC)))
                        ret = true;
        }

        val &= ~UTMIP_OP_I_SRC_EN;
        writel(val, base + UTMIP_BAT_CHRG_CFG0);
        utmi_phy_set_dp_dm_pull_up_down(phy, org_flags);
        return ret;
}

static bool utmi_phy_charger_detect(struct tegra_usb_phy *phy)
{
        unsigned long val;
        void __iomem *base = phy->regs;
        bool status;
        int dcd_timeout_ms;

        DBG("%s(%d) inst:[%d]\n", __func__, __LINE__, phy->inst);
        if (phy->pdata->op_mode != TEGRA_USB_OPMODE_DEVICE) {
                /* Charger detection is not there for ULPI
                 * return Charger not available */
                return false;
        }

        /* ensure we start from an initial state */
        writel(0, base + UTMIP_BAT_CHRG_CFG0);
        utmi_phy_set_dp_dm_pull_up_down(phy, 0);

        /* log initial values */
        DBG("%s(%d) inst:[%d], UTMIP_BAT_CHRG_CFG0 = %08X\n",
                __func__, __LINE__,
                phy->inst, readl(base + UTMIP_BAT_CHRG_CFG0));
        DBG("%s(%d) inst:[%d], UTMIP_MISC_CFG0 = %08X\n",
                __func__, __LINE__,
                phy->inst, readl(base + UTMIP_MISC_CFG0));

        /* DCD timeout max value is 900mS */
        dcd_timeout_ms = 0;
        while (dcd_timeout_ms < 900) {
                /* standard DCD detect for SDP/DCP/CDP */
                if (utmi_phy_dcd_detect(phy))
                        break;
                /* for NV-charger, we wait D+/D- both set */
                if ((USB_PORTSC_LINE_DP_SET | USB_PORTSC_LINE_DM_SET) ==
                        utmi_phy_get_dp_dm_status(phy,
                                DISABLE_PULLUP_DP | DISABLE_PULLUP_DM |
                                DISABLE_PULLDN_DP | DISABLE_PULLDN_DM))
                        break;
                usleep_range(20000, 22000);
                dcd_timeout_ms += 22;
        }

        /* Enable charger detection logic */
        val = readl(base + UTMIP_BAT_CHRG_CFG0);
        val |= UTMIP_OP_SRC_EN | UTMIP_ON_SINK_EN;
        writel(val, base + UTMIP_BAT_CHRG_CFG0);

        /* Source should be on for 100 ms as per USB charging spec */
        msleep(TDP_SRC_ON_MS);

        val = readl(base + USB_PHY_VBUS_WAKEUP_ID);
        /* If charger is not connected disable the interrupt */
        val &= ~VDAT_DET_INT_EN;
        val |= VDAT_DET_CHG_DET;
        writel(val, base + USB_PHY_VBUS_WAKEUP_ID);

        val = readl(base + USB_PHY_VBUS_WAKEUP_ID);
        if (val & VDAT_DET_STS)
                status = true;
        else {
                status = false;
                disable_charger_detection(base);
        }
        DBG("%s(%d) inst:[%d], UTMIP_BAT_CHRG_CFG0 = %08X\n",
                __func__, __LINE__,
                phy->inst, readl(base + UTMIP_BAT_CHRG_CFG0));
        DBG("%s(%d) inst:[%d], UTMIP_MISC_CFG0 = %08X\n",
                __func__, __LINE__,
                phy->inst, readl(base + UTMIP_MISC_CFG0));

        DBG("%s(%d) inst:[%d] DONE Status = %d\n",
                __func__, __LINE__, phy->inst, status);

        return status;
}

static bool cdp_charger_detection(struct tegra_usb_phy *phy)
{
        unsigned long val;
        int status;
        void __iomem *base = phy->regs;

        /* SRC D- to D+ */
        val = readl(base + UTMIP_BAT_CHRG_CFG0);
        val &= ~(UTMIP_OP_SRC_EN | UTMIP_ON_SINK_EN);
        val |= UTMIP_ON_SRC_EN | UTMIP_OP_SINK_EN;
        writel(val, base + UTMIP_BAT_CHRG_CFG0);

        DBG("%s(%d) UTMIP_BAT_CHRG_CFG0 = %08x\n",
                __func__, __LINE__,
                readl(base + UTMIP_BAT_CHRG_CFG0));

        msleep(10);

        val = readl(base + USB_PHY_VBUS_WAKEUP_ID);
        if (val & VDAT_DET_STS) {
                status = false;
                DBG("%s: DCP detected\n", __func__);
        } else {
                status = true;
                disable_charger_detection(base);
                DBG("%s: No voltage from D- to D+ found\n", __func__);
        }

        return status;
}

static bool maxim_charger_detection(struct tegra_usb_phy *phy)
{
        void __iomem *base = phy->regs;
        unsigned long val;
        unsigned long org_flags;
        int status;

        /*
         * Enable charger detection logic
         * 3.3V on D+, Sink D- (high speed usb)
         * Maxim charger will remove short !! -- DCP will not
         */
        org_flags = utmi_phy_set_dp_dm_pull_up_down(phy,
                FORCE_PULLUP_DP   | DISABLE_PULLUP_DM |
                DISABLE_PULLDN_DP | DISABLE_PULLDN_DM);
        val = readl(base + UTMIP_BAT_CHRG_CFG0);
        val &= ~(UTMIP_OP_SRC_EN | UTMIP_ON_SINK_EN);
        val &= ~(UTMIP_ON_SRC_EN | UTMIP_OP_SINK_EN);
        val |= UTMIP_ON_SINK_EN;
        writel(val, base + UTMIP_BAT_CHRG_CFG0);

        /* Source should be on at least 120 ms per Maxim spec */
        msleep(MAXIM_DEBOUNCE_TIME);

        val = readl(base + USB_PHY_VBUS_WAKEUP_ID);
        if (val & VDAT_DET_STS) {
                status = false;
                DBG("%s: Maxim charger not found\n", __func__);
                utmi_phy_set_dp_dm_pull_up_down(phy, org_flags);
        } else {
                status = true;
                DBG("%s: Maxim Charger detected\n", __func__);
        }

        disable_charger_detection(base);
        return status;
}

static bool utmi_phy_qc2_charger_detect(struct tegra_usb_phy *phy,
                int max_voltage)
{
        unsigned long val;
        void __iomem *base = phy->regs;
        int status;
        int qc2_timeout_ms;
        int vbus_stat = 0;
        unsigned long org_flags;
#ifdef QC_MEASURE_VOLTAGES
        int timeout;
#endif

        DBG("%s(%d) inst:[%d] max_voltage = %d\n",
                __func__, __LINE__, phy->inst, max_voltage);

        status = false;
        /* no need to detect qc2 if operating at 5V */
        switch (max_voltage) {
        case TEGRA_USB_QC2_5V:
        case TEGRA_USB_QC2_9V:
        case TEGRA_USB_QC2_12V:
        case TEGRA_USB_QC2_20V:
                break;
        default:
                disable_charger_detection(base);
                return status;
        }

        /* Ensure we start from an initial state */
        writel(0, base + UTMIP_BAT_CHRG_CFG0);
        utmi_phy_set_dp_dm_pull_up_down(phy, 0);

        /*
         * The QC2 charger can be inserted when the system is
         * powered down.  In this case it will act as a DCP unless
         * it is forced to negotiate voltage.  This is because
         * the QC2 charger will not see D+/D- voltage signaling
         * with in its negotiation timer window.
         * We try to detect this condition.  We know that if
         * we enter suspend then system must be active before
         * the QC2 charger was seen.
         * In this case no reset of the charger is needed, otherwise
         * we force the D+ and D- Pull Up down which will reset a
         * QC2 charger but have no effect on a normal DCP.
         */
        if (!phy->qc2_no_reset) {
                phy->qc2_no_reset = true;
                org_flags = utmi_phy_set_dp_dm_pull_up_down(phy,
                        FORCE_PULLDN_DP | FORCE_PULLDN_DM);
                ssleep(1);
                msleep(500);
                utmi_phy_set_dp_dm_pull_up_down(phy, org_flags);
        }

        /* Enable charger detection logic */
        val = readl(base + UTMIP_BAT_CHRG_CFG0);
        val |= UTMIP_OP_SRC_EN | UTMIP_ON_SINK_EN;
        writel(val, base + UTMIP_BAT_CHRG_CFG0);

        /* Source should be on for 100 ms as per USB charging spec */
        msleep(TDP_SRC_ON_MS);

        /* if vbus drops we are connected to quick charge 2 */
        qc2_timeout_ms = 0;
        while (qc2_timeout_ms < 1500) {
                usleep_range(1000, 1200);
                qc2_timeout_ms += 1;
                val = readl(base + USB_PHY_VBUS_WAKEUP_ID);
                if (!(val & VDAT_DET_STS)) {
                        vbus_stat = 1;
                        break;
                }
        }

        if (vbus_stat && qc2_timeout_ms > 100) {
                status = true;

                DBG("%s(%d) inst:[%d], QC2 DETECTED !!!",
                        __func__, __LINE__, phy->inst);

                /* Wall charger needs time before setting D+/D- */
                usleep_range(25000, 26000);

                switch (max_voltage) {
                case TEGRA_USB_QC2_9V:
                        /* Set the input voltage to 9V */
                        /* D+ 3.3v -- D- 0.6v */
                        DBG("%s(%d) inst:[%d], QC 9V D+ 3.3v D- 0.6v",
                                __func__, __LINE__, phy->inst);
                        org_flags = utmi_phy_set_dp_dm_pull_up_down(phy,
                                FORCE_PULLUP_DP   | DISABLE_PULLUP_DM |
                                DISABLE_PULLDN_DP | DISABLE_PULLDN_DM);
                        val = readl(base + UTMIP_BAT_CHRG_CFG0);
                        val &= ~(UTMIP_OP_SINK_EN | UTMIP_ON_SINK_EN);
                        val |= UTMIP_ON_SRC_EN;
                        val &= ~UTMIP_OP_SRC_EN;
                        writel(val, base + UTMIP_BAT_CHRG_CFG0);
                        break;

                case TEGRA_USB_QC2_12V:
                        /* 0.6v v on D+ and D- */
                        DBG("%s(%d) inst:[%d], QC 12V D+ 0.6v D- 0.6v",
                                __func__, __LINE__, phy->inst);
                        org_flags = utmi_phy_set_dp_dm_pull_up_down(phy,
                                DISABLE_PULLUP_DP | DISABLE_PULLUP_DM |
                                DISABLE_PULLDN_DP | DISABLE_PULLDN_DM);
                        val = readl(base + UTMIP_BAT_CHRG_CFG0);
                        val &= ~(UTMIP_OP_SINK_EN | UTMIP_ON_SINK_EN);
                        val |= (UTMIP_OP_SRC_EN | UTMIP_ON_SRC_EN);
                        writel(val, base + UTMIP_BAT_CHRG_CFG0);
                        break;

                case TEGRA_USB_QC2_20V:
                        /* 3.3 v on D+ and D- */
                        DBG("%s(%d) inst:[%d], QC 20V D+ 3.3v D- 3.3v",
                                __func__, __LINE__, phy->inst);
                        org_flags = utmi_phy_set_dp_dm_pull_up_down(phy,
                                FORCE_PULLUP_DP   | FORCE_PULLUP_DM |
                                DISABLE_PULLDN_DP | DISABLE_PULLDN_DM);
                        val = readl(base + UTMIP_BAT_CHRG_CFG0);
                        val &= ~(UTMIP_OP_SINK_EN | UTMIP_ON_SINK_EN);
                        val &= ~(UTMIP_OP_SRC_EN | UTMIP_ON_SRC_EN);
                        writel(val, base + UTMIP_BAT_CHRG_CFG0);
                        break;

                case TEGRA_USB_QC2_5V:
                default:
                        DBG("%s(%d) inst:[%d], QC 5V D+ 0.6v D- GND",
                                __func__, __LINE__, phy->inst);
                        org_flags = utmi_phy_set_dp_dm_pull_up_down(phy,
                                DISABLE_PULLUP_DP | DISABLE_PULLUP_DM |
                                DISABLE_PULLDN_DP | FORCE_PULLDN_DM);
                        val = readl(base + UTMIP_BAT_CHRG_CFG0);
                        val &= ~(UTMIP_OP_SINK_EN | UTMIP_ON_SINK_EN);
                        val |= UTMIP_OP_SRC_EN;
                        val &= ~UTMIP_ON_SRC_EN;
                        writel(val, base + UTMIP_BAT_CHRG_CFG0);
                        break;
                }

#ifdef QC_MEASURE_VOLTAGES
                timeout = 60;
                DBG("%s(%d) MEASURE VOLTAGES -- you have %d seconds",
                        __func__, __LINE__, timeout);
                while (timeout-- > 0) {
                        DBG("%s(%d) COUNT = %d",
                                __func__, __LINE__, timeout);
                        ssleep(1);
                }
#endif
        }

        /*
         * If QC2 charger detected do not disable the charger
         * detection voltage on D- and D+. Doing this will
         * cause it to move to 5V
         */
        if (!status)
                disable_charger_detection(base);

        DBG("%s(%d) inst:[%d] DONE Status = %d\n",
                __func__, __LINE__, phy->inst, status);
        return status;
}

static bool utmi_phy_is_non_std_charger(struct tegra_usb_phy *phy)
{
        /*
         * non std charger has D+/D- line float, we can apply pull up/down on
         * each line and verify if line status change.
         */
        /* pull up DP only */
        if (USB_PORTSC_LINE_DP_SET != utmi_phy_get_dp_dm_status(phy,
                                FORCE_PULLUP_DP | DISABLE_PULLUP_DM |
                                DISABLE_PULLDN_DP | DISABLE_PULLDN_DM))
                goto NOT_NON_STD_CHARGER;

        /* pull down DP only */
        if (0x0 != utmi_phy_get_dp_dm_status(phy,
                                DISABLE_PULLUP_DP | DISABLE_PULLUP_DM |
                                FORCE_PULLDN_DP | DISABLE_PULLDN_DM))
                goto NOT_NON_STD_CHARGER;

        /* pull up DM only */
        if (USB_PORTSC_LINE_DM_SET != utmi_phy_get_dp_dm_status(phy,
                                DISABLE_PULLUP_DP | FORCE_PULLUP_DM |
                                DISABLE_PULLDN_DP | DISABLE_PULLDN_DM))
                goto NOT_NON_STD_CHARGER;

        /* pull down DM only */
        if (0x0 != utmi_phy_get_dp_dm_status(phy,
                                DISABLE_PULLUP_DP | DISABLE_PULLUP_DM |
                                DISABLE_PULLDN_DP | FORCE_PULLDN_DM))
                goto NOT_NON_STD_CHARGER;

        utmi_phy_set_dp_dm_pull_up_down(phy, 0);
        return true;

NOT_NON_STD_CHARGER:
        utmi_phy_set_dp_dm_pull_up_down(phy, 0);
        return false;

}

static void utmi_phy_pmc_disable(struct tegra_usb_phy *phy)
{
        struct tegra_usb_pmc_data *pmc = &pmc_data[phy->inst];
        if (phy->pdata->u_data.host.turn_off_vbus_on_lp0 &&
                                        phy->pdata->port_otg) {
                pmc->pmc_ops->disable_pmc_bus_ctrl(pmc, 0);
                pmc->pmc_ops->powerdown_pmc_wake_detect(pmc);
        }
}
static bool utmi_phy_nv_charger_detect(struct tegra_usb_phy *phy)
{
        int status1;
        int status2;
        int status3;
        bool ret;

        DBG("%s(%d) inst:[%d]\n", __func__, __LINE__, phy->inst);

        if (utmi_phy_is_non_std_charger(phy))
                return false;

        ret = false;
        /* Turn off all terminations except DP pulldown */
        status1 = utmi_phy_get_dp_dm_status(phy,
                        DISABLE_PULLUP_DP | DISABLE_PULLUP_DM |
                        FORCE_PULLDN_DP | DISABLE_PULLDN_DM);

        /* Turn off all terminations except for DP pullup */
        status2 = utmi_phy_get_dp_dm_status(phy,
                        FORCE_PULLUP_DP | DISABLE_PULLUP_DM |
                        DISABLE_PULLDN_DP | DISABLE_PULLDN_DM);

        /* Check for NV charger DISABLE all terminations */
        status3 = utmi_phy_get_dp_dm_status(phy,
                        DISABLE_PULLUP_DP | DISABLE_PULLUP_DM |
                        DISABLE_PULLDN_DP | DISABLE_PULLDN_DM);

        if ((status1 == (USB_PORTSC_LINE_DP_SET | USB_PORTSC_LINE_DM_SET)) &&
            (status2 == (USB_PORTSC_LINE_DP_SET | USB_PORTSC_LINE_DM_SET)) &&
            (status3 == (USB_PORTSC_LINE_DP_SET | USB_PORTSC_LINE_DM_SET)))
                ret = true;

        /* Restore standard termination by hardware. */
        utmi_phy_set_dp_dm_pull_up_down(phy, 0);
        return ret;
}

static bool utmi_phy_apple_charger_1000ma_detect(struct tegra_usb_phy *phy)
{
        unsigned long val;
        bool ret;
        void __iomem *base = phy->regs;
        unsigned long org_flags;

        DBG("%s(%d) inst:[%d]\n", __func__, __LINE__, phy->inst);
        ret = false;

        org_flags = utmi_phy_set_dp_dm_pull_up_down(phy,
                                FORCE_PULLUP_DP | FORCE_PULLUP_DM |
                                DISABLE_PULLDN_DP | DISABLE_PULLDN_DM);
        usleep_range(20000, 30000);
        utmi_phy_set_dp_dm_pull_up_down(phy,
                                DISABLE_PULLUP_DP | DISABLE_PULLUP_DM |
                                DISABLE_PULLDN_DP | DISABLE_PULLDN_DM);

        val = readl(base + USB_PHY_VBUS_WAKEUP_ID);
        val |= DIV_DET_EN;
        writel(val, base + USB_PHY_VBUS_WAKEUP_ID);

        usleep_range(10000, 20000);

        val = readl(base + USB_PHY_VBUS_WAKEUP_ID);
        val &= ~DIV_DET_EN;
        writel(val, base + USB_PHY_VBUS_WAKEUP_ID);

        if ((val & VOP_DIV2P0_DET) && (val & VON_DIV2P7_DET))
                ret = true;

        utmi_phy_set_dp_dm_pull_up_down(phy, org_flags);

        return ret;
}

static bool utmi_phy_apple_charger_2000ma_detect(struct tegra_usb_phy *phy)
{
        unsigned long val;
        bool ret;
        void __iomem *base = phy->regs;
        unsigned long org_flags;

        DBG("%s(%d) inst:[%d]\n", __func__, __LINE__, phy->inst);
        ret = false;

        org_flags = utmi_phy_set_dp_dm_pull_up_down(phy,
                                FORCE_PULLUP_DP | FORCE_PULLUP_DM |
                                DISABLE_PULLDN_DP | DISABLE_PULLDN_DM);
        usleep_range(20000, 30000);
        utmi_phy_set_dp_dm_pull_up_down(phy,
                                DISABLE_PULLUP_DP | DISABLE_PULLUP_DM |
                                DISABLE_PULLDN_DP | DISABLE_PULLDN_DM);

        val = readl(base + USB_PHY_VBUS_WAKEUP_ID);
        val |= DIV_DET_EN;
        writel(val, base + USB_PHY_VBUS_WAKEUP_ID);

        usleep_range(10000, 20000);

        val = readl(base + USB_PHY_VBUS_WAKEUP_ID);
        val &= ~DIV_DET_EN;
        writel(val, base + USB_PHY_VBUS_WAKEUP_ID);

        if ((val & VOP_DIV2P7_DET) && (val & VON_DIV2P0_DET))
                ret = true;

        utmi_phy_set_dp_dm_pull_up_down(phy, org_flags);

        return ret;
}

static bool utmi_phy_apple_charger_500ma_detect(struct tegra_usb_phy *phy)
{
        unsigned long val;
        bool ret;
        void __iomem *base = phy->regs;
        unsigned long org_flags;

        DBG("%s(%d) inst:[%d]\n", __func__, __LINE__, phy->inst);
        ret = false;

        org_flags = utmi_phy_set_dp_dm_pull_up_down(phy,
                                FORCE_PULLUP_DP | FORCE_PULLUP_DM |
                                DISABLE_PULLDN_DP | DISABLE_PULLDN_DM);
        usleep_range(20000, 30000);
        utmi_phy_set_dp_dm_pull_up_down(phy,
                                DISABLE_PULLUP_DP | DISABLE_PULLUP_DM |
                                DISABLE_PULLDN_DP | DISABLE_PULLDN_DM);

        val = readl(base + USB_PHY_VBUS_WAKEUP_ID);
        val |= DIV_DET_EN;
        writel(val, base + USB_PHY_VBUS_WAKEUP_ID);

        usleep_range(10000, 20000);

        val = readl(base + USB_PHY_VBUS_WAKEUP_ID);
        val &= ~DIV_DET_EN;
        writel(val, base + USB_PHY_VBUS_WAKEUP_ID);

        if ((val & VOP_DIV2P0_DET) && (val & VON_DIV2P0_DET))
                ret = true;

        utmi_phy_set_dp_dm_pull_up_down(phy, org_flags);

        return ret;
}

static bool uhsic_phy_remotewake_detected(struct tegra_usb_phy *phy)
{
        void __iomem *base = phy->regs;
        u32 val;
        unsigned int inst = phy->inst;

        val = readl(base + UHSIC_PMC_WAKEUP0);
        if (!(val & EVENT_INT_ENB))
                return false;
        val = tegra_usb_pmc_reg_read(UHSIC_STATUS(inst));
        if (!(UHSIC_WAKE_ALARM(inst) & val))
                return false;
        tegra_usb_pmc_reg_update(PMC_UHSIC_SLEEP_CFG(inst),
                UHSIC_WAKE_VAL(inst, WAKE_VAL_ANY),
                UHSIC_WAKE_VAL(inst, WAKE_VAL_NONE));

        tegra_usb_pmc_reg_update(PMC_UHSIC_TRIGGERS(inst),
                0, UHSIC_CLR_WAKE_ALARM(inst));

        val = readl(base + UHSIC_PMC_WAKEUP0);
        val &= ~EVENT_INT_ENB;
        writel(val, base + UHSIC_PMC_WAKEUP0);
        phy->pmc_remote_wakeup = true;
        DBG("%s:PMC interrupt detected for HSIC\n", __func__);
        return true;
}

static int uhsic_phy_pre_resume(struct tegra_usb_phy *phy, bool remote_wakeup)
{
        unsigned long val;
        void __iomem *base = phy->regs;

        if (remote_wakeup) {
                /* Set RUN bit */
                val = readl(base + USB_USBCMD);
                val |= USB_USBCMD_RS;
                writel(val, base + USB_USBCMD);
        }

        DBG("%s(%d) inst:[%d]\n", __func__, __LINE__, phy->inst);

        return 0;
}

static void uhsic_phy_restore_start(struct tegra_usb_phy *phy)
{
        unsigned long val;
        void __iomem *base = phy->regs;
        unsigned int inst = phy->inst;
        struct tegra_usb_pmc_data *pmc = &pmc_data[phy->inst];

        val = tegra_usb_pmc_reg_read(UHSIC_STATUS(inst));

        /* check whether we wake up from the remote resume */
        if (UHSIC_WALK_PTR_VAL(inst) & val) {
                phy->pmc_remote_wakeup = true;
                DBG("%s: uhsic remote wakeup detected\n", __func__);
        } else {
                if (!((UHSIC_STROBE_VAL(inst) | UHSIC_DATA_VAL(inst)) & val)) {

                        /*
                         * If pmc wakeup is detected after putting controller
                         * in suspend in usb_phy_bringup_host_cotroller,
                         * restart bringing up host controller as
                         * in case of only pmc wakeup.
                         */
                        if (phy->pmc_remote_wakeup && phy->ctrlr_suspended) {
                                usb_phy_bringup_host_controller(phy);
                                if (usb_phy_reg_status_wait(base + USB_PORTSC,
                                        (USB_PORTSC_RESUME | USB_PORTSC_SUSP),
                                                0, FPR_WAIT_TIME_US) < 0)
                                        pr_err("%s: timeout waiting" \
                                        "for SUSPEND to clear\n",
                                                __func__);
                                phy->ctrlr_suspended = false;
                        }

                        pmc->pmc_ops->disable_pmc_bus_ctrl(pmc, 0);
                        phy->pmc_remote_wakeup = false;
                } else {
                        DBG("%s(%d): setting pretend connect\n", __func__, __LINE__);
                        val = readl(base + UHSIC_CMD_CFG0);
                        val |= UHSIC_PRETEND_CONNECT_DETECT;
                        writel(val, base + UHSIC_CMD_CFG0);
                }
        }
}

static void uhsic_phy_restore_end(struct tegra_usb_phy *phy)
{

        unsigned long val, flags = 0;
        void __iomem *base = phy->regs;
        int wait_time_us = FPR_WAIT_TIME_US; /* FPR should be set by this time */
        bool irq_disabled = false;
        struct tegra_usb_pmc_data *pmc = &pmc_data[phy->inst];
        bool remote_wakeup_detected;

        DBG("%s(%d)\n", __func__, __LINE__);

        remote_wakeup_detected = phy->pmc_remote_wakeup;
        /*
         * check whether we wake up from the remote wake detected before putting
         * controller in suspend in usb_phy_bringup_host_controller.
         */
        if (!phy->ctrlr_suspended) {
                /* wait until FPR bit is set automatically on remote resume */
                do {
                        val = readl(base + USB_PORTSC);
                        udelay(1);
                        if (wait_time_us == 0) {
                        /*
                         * If pmc wakeup is detected after putting controller
                         * in suspend in usb_phy_bringup_host_cotroller,
                         * restart bringing up host controller as
                         * in case of only pmc wakeup.
                         */
                        if (phy->pmc_remote_wakeup && phy->ctrlr_suspended) {
                                usb_phy_bringup_host_controller(phy);
                                if (usb_phy_reg_status_wait(base + USB_PORTSC,
                                        (USB_PORTSC_RESUME | USB_PORTSC_SUSP),
                                                0, FPR_WAIT_TIME_US) < 0)
                                        pr_err("%s: timeout waiting" \
                                                " for SUSPEND to clear\n",
                                                __func__);
                                phy->ctrlr_suspended = false;
                        }

                                pmc->pmc_ops->disable_pmc_bus_ctrl(pmc, 0);
                                phy->pmc_remote_wakeup = false;
                                return;
                        }
                        wait_time_us--;
                } while (val & (USB_PORTSC_RESUME | USB_PORTSC_SUSP));
                /* In case of remote wakeup, disable local irq to prevent
                 * context switch b/t disable PMC and set RUN bit ops */
                local_irq_save(flags);
                irq_disabled = true;
        }

        /*
         * If pmc wakeup is detected after putting controller in suspend
         * in usb_phy_bringup_host_cotroller, restart bringing up host
         * controller as in case of only pmc wakeup.
         */
        if (phy->pmc_remote_wakeup && phy->ctrlr_suspended) {
                usb_phy_bringup_host_controller(phy);
                if (usb_phy_reg_status_wait(base + USB_PORTSC,
                        (USB_PORTSC_RESUME | USB_PORTSC_SUSP), 0,
                                FPR_WAIT_TIME_US) < 0)
                        pr_err("%s: timeout waiting for SUSPEND to clear\n",
                                __func__);
                phy->ctrlr_suspended = false;
        }

        val = tegra_usb_pmc_reg_read(PMC_UHSIC_SLEEP_CFG(phy->inst));
        if (val & UHSIC_MASTER_ENABLE(phy->inst)) {
                val = readl(base + UHSIC_PADS_CFG1);
                val &= ~(UHSIC_PD_TX);
                writel(val, base + UHSIC_PADS_CFG1);
        }

        if (irq_disabled) {
                local_irq_restore(flags);
                usleep_range(25000, 26000);
                local_irq_save(flags);
        } else
                usleep_range(10000, 11000);

        pmc->pmc_ops->disable_pmc_bus_ctrl(pmc, 1);
        phy->pmc_remote_wakeup = false;

        /* Restore local irq if disabled before */
        if (irq_disabled)
                local_irq_restore(flags);
        if (usb_phy_reg_status_wait(base + USB_USBCMD, USB_USBCMD_RS,
                                                 USB_USBCMD_RS, 2000)) {
                pr_err("%s: timeout waiting for USB_USBCMD_RS\n", __func__);
                return;
        }
        if (remote_wakeup_detected && phy->pdata->ops &&
                                        phy->pdata->ops->post_remote_wakeup)
                phy->pdata->ops->post_remote_wakeup();
}

static int uhsic_rail_enable(struct tegra_usb_phy *phy)
{
        int ret;

        if (phy->hsic_reg == NULL) {
                phy->hsic_reg = regulator_get(&phy->pdev->dev, "vddio_hsic");
                if (IS_ERR_OR_NULL(phy->hsic_reg)) {
                        pr_err("UHSIC: Could not get regulator vddio_hsic\n");
                        ret = PTR_ERR(phy->hsic_reg);
                        phy->hsic_reg = NULL;
                        return ret;
                }
        }

        ret = regulator_enable(phy->hsic_reg);
        if (ret < 0) {
                pr_err("%s vddio_hsic could not be enabled\n", __func__);
                return ret;
        }

        return 0;
}

static int uhsic_rail_disable(struct tegra_usb_phy *phy)
{
        int ret;

        if (phy->hsic_reg == NULL) {
                pr_warn("%s: unbalanced disable\n", __func__);
                return -EIO;
        }

        ret = regulator_disable(phy->hsic_reg);
        if (ret < 0) {
                pr_err("HSIC regulator vddio_hsic cannot be disabled\n");
                return ret;
        }
        regulator_put(phy->hsic_reg);
        phy->hsic_reg = NULL;
        return 0;
}

static int uhsic_phy_open(struct tegra_usb_phy *phy)
{
        unsigned long parent_rate;
        int i;
        int ret;
        struct tegra_usb_pmc_data *pmc = &pmc_data[phy->inst];

        phy->hsic_reg = NULL;
        ret = uhsic_rail_enable(phy);
        if (ret < 0) {
                pr_err("%s vddio_hsic could not be enabled\n", __func__);
                return ret;
        }

        DBG("%s(%d) inst:[%d]\n", __func__, __LINE__, phy->inst);
        parent_rate = clk_get_rate(clk_get_parent(phy->pllu_clk));
        for (i = 0; i < ARRAY_SIZE(uhsic_freq_table); i++) {
                if (uhsic_freq_table[i].freq == parent_rate) {
                        phy->freq = &uhsic_freq_table[i];
                        break;
                }
        }
        if (!phy->freq) {
                pr_err("invalid pll_u parent rate %ld\n", parent_rate);
                return -EINVAL;
        }
        /* reset controller for reenumerating hsic device */
        tegra_periph_reset_assert(phy->ctrlr_clk);
        udelay(2);
        tegra_periph_reset_deassert(phy->ctrlr_clk);
        udelay(2);

        uhsic_phy_set_snps_trking_data();

        pmc_init(phy);
        pmc->pmc_ops->powerup_pmc_wake_detect(pmc);

        return 0;
}

static void uhsic_phy_close(struct tegra_usb_phy *phy)
{
        int ret;
        struct tegra_usb_pmc_data *pmc = &pmc_data[phy->inst];

        DBG("%s(%d) inst:[%d]\n", __func__, __LINE__, phy->inst);
        pmc->pmc_ops->powerdown_pmc_wake_detect(pmc);

        ret = uhsic_rail_disable(phy);
        if (ret < 0)
                pr_err("%s vddio_hsic could not be disabled\n", __func__);
}

static int uhsic_phy_irq(struct tegra_usb_phy *phy)
{
        unsigned long val;
        void __iomem *base = phy->regs;
        int irq_status = IRQ_HANDLED;

        /* check if there is any remote wake event */
        if (!phy->pdata->unaligned_dma_buf_supported)
                usb_phy_fence_read(phy);
        if (uhsic_phy_remotewake_detected(phy))
                DBG("%s: uhsic remote wake detected\n", __func__);

        val = readl(base + USB_SUSP_CTRL);
        if ((val  & USB_PHY_CLK_VALID_INT_STS) &&
                (val  & USB_PHY_CLK_VALID_INT_ENB)) {
                val &= ~USB_PHY_CLK_VALID_INT_ENB |
                                USB_PHY_CLK_VALID_INT_STS;
                writel(val , (base + USB_SUSP_CTRL));

                val = readl(base + USB_USBSTS);
                if (!(val  & USB_USBSTS_PCI)) {
                        irq_status = IRQ_NONE;
                        goto exit;
                }

                val = readl(base + USB_PORTSC);
                if (val & USB_PORTSC_CCS)
                        val &= ~USB_PORTSC_WKCN;
                val &= ~USB_PORTSC_RWC_BITS;
                writel(val , (base + USB_PORTSC));
                irq_status = IRQ_HANDLED;
        }
exit:
        return irq_status;
}

static int uhsic_phy_power_on(struct tegra_usb_phy *phy)
{
        unsigned long val;
        void __iomem *base = phy->regs;
#ifdef CONFIG_ARCH_TEGRA_11x_SOC
        void __iomem *padctl_base = IO_ADDRESS(TEGRA_XUSB_PADCTL_BASE);
#endif

        DBG("%s(%d) inst:[%d]\n", __func__, __LINE__, phy->inst);

        if (phy->phy_clk_on) {
                DBG("%s(%d) inst:[%d] phy clk is already On\n",
                                        __func__, __LINE__, phy->inst);
                return 0;
        }

#ifdef CONFIG_ARCH_TEGRA_11x_SOC
        val = readl(padctl_base + PADCTL_SNPS_OC_MAP);
        val |= CONTROLLER_OC(phy->inst, 0x7);
        writel(val, padctl_base + PADCTL_SNPS_OC_MAP);
#endif

        val = readl(base + UHSIC_PADS_CFG1);
        val &= ~(UHSIC_PD_BG | UHSIC_PD_RX |
                        UHSIC_PD_ZI | UHSIC_RPD_DATA | UHSIC_RPD_STROBE);
        writel(val, base + UHSIC_PADS_CFG1);

        val |= (UHSIC_RX_SEL | UHSIC_PD_TX);
        val |= UHSIC_AUTO_RTERM_EN;
        writel(val, base + UHSIC_PADS_CFG1);

        val = readl(base + USB_SUSP_CTRL);
        val |= UHSIC_RESET;
        writel(val, base + USB_SUSP_CTRL);
        udelay(1);

        val = readl(base + USB_SUSP_CTRL);
        val |= UHSIC_PHY_ENABLE;
        writel(val, base + USB_SUSP_CTRL);

        val = readl(base + UHSIC_HSRX_CFG0);
        val |= UHSIC_IDLE_WAIT(HSIC_IDLE_WAIT_DELAY);
        val |= UHSIC_ELASTIC_UNDERRUN_LIMIT(HSIC_ELASTIC_UNDERRUN_LIMIT);
        val |= UHSIC_ELASTIC_OVERRUN_LIMIT(HSIC_ELASTIC_OVERRUN_LIMIT);
        writel(val, base + UHSIC_HSRX_CFG0);

        val = readl(base + UHSIC_HSRX_CFG1);
        val |= UHSIC_HS_SYNC_START_DLY(HSIC_SYNC_START_DELAY);
        writel(val, base + UHSIC_HSRX_CFG1);

        /* WAR HSIC TX */
        val = readl(base + UHSIC_TX_CFG0);
        val &= ~UHSIC_HS_READY_WAIT_FOR_VALID;
        writel(val, base + UHSIC_TX_CFG0);

        val = readl(base + UHSIC_MISC_CFG0);
        val |= UHSIC_SUSPEND_EXIT_ON_EDGE;
        writel(val, base + UHSIC_MISC_CFG0);

        val = readl(base + UHSIC_MISC_CFG1);
        val |= UHSIC_PLLU_STABLE_COUNT(phy->freq->stable_count);
        writel(val, base + UHSIC_MISC_CFG1);

        val = readl(base + UHSIC_PLL_CFG1);
        val |= UHSIC_PLLU_ENABLE_DLY_COUNT(phy->freq->enable_delay);
        val |= UHSIC_XTAL_FREQ_COUNT(phy->freq->xtal_freq_count);
        writel(val, base + UHSIC_PLL_CFG1);

        val = readl(base + USB_SUSP_CTRL);
        val &= ~(UHSIC_RESET);
        writel(val, base + USB_SUSP_CTRL);
        udelay(1);

        val = tegra_usb_pmc_reg_read(PMC_UHSIC_SLEEP_CFG(phy->inst));
        if (!(val & UHSIC_MASTER_ENABLE(phy->inst))) {
                val = readl(base + UHSIC_PADS_CFG1);
                val &= ~(UHSIC_PD_TX);
                writel(val, base + UHSIC_PADS_CFG1);
        }

        /* HSIC pad tracking circuit power down sequence */
        val = readl(base + UHSIC_PADS_CFG1);
        val &= ~(UHSIC_PD_TRK);
        writel(val, base + UHSIC_PADS_CFG1);
        /* Wait for 25usec */
        udelay(25);
        val |= UHSIC_PD_TRK;
        writel(val, base + UHSIC_PADS_CFG1);

        /* Enable bus keepers always */
        val = readl(base + UHSIC_SPARE_CFG0);
        val |= FORCE_BK_ON;
        writel(val, base + UHSIC_SPARE_CFG0);

        /*SUSP_CTRL has to be toggled to enable host PHY clock */
        val = readl(base + USB_SUSP_CTRL);
        val |= USB_SUSP_CLR;
        writel(val, base + USB_SUSP_CTRL);

        val = readl(base + USB_SUSP_CTRL);
        val &= ~USB_SUSP_CLR;
        writel(val, base + USB_SUSP_CTRL);

        val = readl(base + USB_USBMODE);
        val |= USB_USBMODE_HOST;
        writel(val, base + USB_USBMODE);

        /* Change the USB controller PHY type to HSIC */
        val = readl(base + HOSTPC1_DEVLC);
        val &= ~HOSTPC1_DEVLC_PTS(HOSTPC1_DEVLC_PTS_MASK);
        val |= HOSTPC1_DEVLC_PTS(HOSTPC1_DEVLC_PTS_HSIC);
        val &= ~HOSTPC1_DEVLC_PSPD(HOSTPC1_DEVLC_PSPD_MASK);
        val |= HOSTPC1_DEVLC_PSPD(HOSTPC1_DEVLC_PSPD_HIGH_SPEED);
        val &= ~HOSTPC1_DEVLC_STS;
        writel(val, base + HOSTPC1_DEVLC);

        val = readl(base + USB_PORTSC);
        val &= ~(USB_PORTSC_WKOC | USB_PORTSC_WKDS);
        writel(val, base + USB_PORTSC);

        val = readl(base + UHSIC_TX_CFG0);
        val |= UHSIC_HS_POSTAMBLE_OUTPUT_ENABLE;
        writel(val, base + UHSIC_TX_CFG0);

        val = readl(base + UHSIC_PADS_CFG0);
        /* Clear RTUNEP, SLEWP & SLEWN bit fields */
        val &= ~(UHSIC_TX_RTUNEP | UHSIC_TX_SLEWP | UHSIC_TX_SLEWN);
        /* set Rtune impedance to 50 ohm */
#if defined(CONFIG_ARCH_TEGRA_13x_SOC)
        val |= UHSIC_TX_RTUNE_P(0x8);
#elif defined(CONFIG_ARCH_TEGRA_12x_SOC)
        val |= UHSIC_TX_RTUNE_P(0xA);
#else
        val |= UHSIC_TX_RTUNE_P(0xC);
#endif
        writel(val, base + UHSIC_PADS_CFG0);

        if (usb_phy_reg_status_wait(base + USB_SUSP_CTRL,
                                USB_PHY_CLK_VALID, USB_PHY_CLK_VALID, 2500)) {
                pr_err("%s: timeout waiting for phy to stabilize\n", __func__);
                return -ETIMEDOUT;
        }

        phy->phy_clk_on = true;
        phy->hw_accessible = true;

        if (!readl(base + USB_ASYNCLISTADDR))
                _usb_phy_init(phy);

        if (phy->pmc_sleepwalk) {
                DBG("%s(%d) inst:[%d] restore phy\n", __func__, __LINE__,
                                        phy->inst);
                uhsic_phy_restore_start(phy);
                usb_phy_bringup_host_controller(phy);
                uhsic_phy_restore_end(phy);
                phy->pmc_sleepwalk = false;
        }

        val = readl(base + USB_TXFILLTUNING);
        if ((val & USB_FIFO_TXFILL_MASK) != USB_FIFO_TXFILL_THRES(0x10)) {
                val = USB_FIFO_TXFILL_THRES(0x10);
                writel(val, base + USB_TXFILLTUNING);
        }

        return 0;
}

static int uhsic_phy_power_off(struct tegra_usb_phy *phy)
{
        unsigned long val;
        void __iomem *base = phy->regs;
        bool port_connected;
        struct tegra_usb_pmc_data *pmc = &pmc_data[phy->inst];

        DBG("%s(%d) inst:[%d]\n", __func__, __LINE__, phy->inst);
        if (!phy->phy_clk_on) {
                DBG("%s(%d) inst:[%d] phy clk is already off\n",
                                        __func__, __LINE__, phy->inst);
                return 0;
        }

        /* Disable interrupts */
        writel(0, base + USB_USBINTR);

        /* check for port connect status */
        val = readl(base + USB_PORTSC);
        port_connected = val & USB_PORTSC_CCS;

        if (phy->pmc_sleepwalk == false && port_connected) {
                pmc->pmc_ops->setup_pmc_wake_detect(pmc);

                phy->pmc_remote_wakeup = false;
                phy->pmc_sleepwalk = true;

                val = readl(base + UHSIC_PMC_WAKEUP0);
                val |= EVENT_INT_ENB;
                writel(val, base + UHSIC_PMC_WAKEUP0);

                val = readl(base + USB_SUSP_CTRL);
                val &= ~USB_WAKE_ON_CNNT_EN_DEV;
                writel(val, base + USB_SUSP_CTRL);
        } else {
                phy->pmc_sleepwalk = true;
        }

        val = readl(base + HOSTPC1_DEVLC);
        val |= HOSTPC1_DEVLC_PHCD;
        writel(val, base + HOSTPC1_DEVLC);

        /* Remove power downs for HSIC from PADS CFG1 register */
        val = readl(base + UHSIC_PADS_CFG1);
        val |= (UHSIC_PD_BG | UHSIC_PD_TRK |
                        UHSIC_PD_ZI | UHSIC_PD_TX);
        writel(val, base + UHSIC_PADS_CFG1);

        if (usb_phy_reg_status_wait(base + USB_SUSP_CTRL,
                USB_PHY_CLK_VALID, 0, 2500))
                pr_warn("%s: timeout waiting for phy to disable\n", __func__);

        DBG("%s(%d) inst:[%d] End\n", __func__, __LINE__, phy->inst);

        phy->phy_clk_on = false;
        phy->hw_accessible = false;

        return 0;
}

static int uhsic_phy_bus_port_power(struct tegra_usb_phy *phy)
{
        unsigned long val;
        void __iomem *base = phy->regs;

        DBG("%s(%d) inst:[%d]\n", __func__, __LINE__, phy->inst);

        val = readl(base + USB_USBMODE);
        val |= USB_USBMODE_HOST;
        writel(val, base + USB_USBMODE);

        /* Change the USB controller PHY type to HSIC */
        val = readl(base + HOSTPC1_DEVLC);
        val &= ~(HOSTPC1_DEVLC_PTS(HOSTPC1_DEVLC_PTS_MASK));
        val |= HOSTPC1_DEVLC_PTS(HOSTPC1_DEVLC_PTS_HSIC);
        val &= ~(HOSTPC1_DEVLC_PSPD(HOSTPC1_DEVLC_PSPD_MASK));
        val |= HOSTPC1_DEVLC_PSPD(HOSTPC1_DEVLC_PSPD_HIGH_SPEED);
        writel(val, base + HOSTPC1_DEVLC);

        val = readl(base + UHSIC_MISC_CFG0);
        val |= UHSIC_DETECT_SHORT_CONNECT;
        writel(val, base + UHSIC_MISC_CFG0);
        udelay(1);
        if (phy->pdata->ops && phy->pdata->ops->port_power)
                phy->pdata->ops->port_power();

        return 0;
}

static struct tegra_usb_phy_ops utmi_phy_ops = {
        .init           = _usb_phy_init,
        .reset          = usb_phy_reset,
        .open           = utmi_phy_open,
        .close          = utmi_phy_close,
        .irq            = utmi_phy_irq,
        .power_on       = utmi_phy_power_on,
        .power_off      = utmi_phy_power_off,
        .pre_resume = utmi_phy_pre_resume,
        .resume = utmi_phy_resume,
        .post_resume    = utmi_phy_post_resume,
        .charger_detect = utmi_phy_charger_detect,
        .qc2_charger_detect = utmi_phy_qc2_charger_detect,
        .cdp_charger_detect = cdp_charger_detection,
        .nv_charger_detect = utmi_phy_nv_charger_detect,
        .maxim_charger_14675 = maxim_charger_detection,
        .apple_charger_1000ma_detect = utmi_phy_apple_charger_1000ma_detect,
        .apple_charger_2000ma_detect = utmi_phy_apple_charger_2000ma_detect,
        .apple_charger_500ma_detect = utmi_phy_apple_charger_500ma_detect,
        .pmc_disable = utmi_phy_pmc_disable,
};

static struct tegra_usb_phy_ops uhsic_phy_ops = {
        .init           = _usb_phy_init,
        .reset          = usb_phy_reset,
        .open           = uhsic_phy_open,
        .close          = uhsic_phy_close,
        .irq            = uhsic_phy_irq,
        .power_on       = uhsic_phy_power_on,
        .power_off      = uhsic_phy_power_off,
        .pre_resume     = uhsic_phy_pre_resume,
        .port_power = uhsic_phy_bus_port_power,
};

static struct tegra_usb_phy_ops *phy_ops[] = {
        [TEGRA_USB_PHY_INTF_UTMI] = &utmi_phy_ops,
        [TEGRA_USB_PHY_INTF_HSIC] = &uhsic_phy_ops,
};

int tegra11x_usb_phy_init_ops(struct tegra_usb_phy *phy)
{
        DBG("%s(%d) inst:[%d]\n", __func__, __LINE__, phy->inst);

        phy->ops = phy_ops[phy->pdata->phy_intf];

        /* FIXME: uncommenting below line to make USB host mode fail*/
        /* pmc->pmc_ops->power_down_pmc(pmc); */

        return 0;
}