drivers/phy/phy-exynos5250-usb2.c - linux - Git at Google

 /*
  * Samsung SoC USB 1.1/2.0 PHY driver - Exynos 5250 support
  *
  * Copyright (C) 2013 Samsung Electronics Co., Ltd.
  * Author: Kamil Debski <k.debski@samsung.com>
  *
  * This program is free software; you can redistribute it and/or modify
  * it under the terms of the GNU General Public License version 2 as
  * published by the Free Software Foundation.
  */

 #include <linux/delay.h>
 #include <linux/io.h>
 #include <linux/phy/phy.h>
 #include <linux/regmap.h>
 #include "phy-samsung-usb2.h"

 /* Exynos USB PHY registers */
 #define EXYNOS_5250_REFCLKSEL_CRYSTAL	0x0
 #define EXYNOS_5250_REFCLKSEL_XO	0x1
 #define EXYNOS_5250_REFCLKSEL_CLKCORE	0x2

 #define EXYNOS_5250_FSEL_9MHZ6		0x0
 #define EXYNOS_5250_FSEL_10MHZ		0x1
 #define EXYNOS_5250_FSEL_12MHZ		0x2
 #define EXYNOS_5250_FSEL_19MHZ2		0x3
 #define EXYNOS_5250_FSEL_20MHZ		0x4
 #define EXYNOS_5250_FSEL_24MHZ		0x5
 #define EXYNOS_5250_FSEL_50MHZ		0x7

 /* Normal host */
 #define EXYNOS_5250_HOSTPHYCTRL0			0x0

 #define EXYNOS_5250_HOSTPHYCTRL0_PHYSWRSTALL		BIT(31)
 #define EXYNOS_5250_HOSTPHYCTRL0_REFCLKSEL_SHIFT	19
 #define EXYNOS_5250_HOSTPHYCTRL0_REFCLKSEL_MASK	\
 		(0x3 << EXYNOS_5250_HOSTPHYCTRL0_REFCLKSEL_SHIFT)
 #define EXYNOS_5250_HOSTPHYCTRL0_FSEL_SHIFT		16
 #define EXYNOS_5250_HOSTPHYCTRL0_FSEL_MASK \
 		(0x7 << EXYNOS_5250_HOSTPHYCTRL0_FSEL_SHIFT)
 #define EXYNOS_5250_HOSTPHYCTRL0_TESTBURNIN		BIT(11)
 #define EXYNOS_5250_HOSTPHYCTRL0_RETENABLE		BIT(10)
 #define EXYNOS_5250_HOSTPHYCTRL0_COMMON_ON_N		BIT(9)
 #define EXYNOS_5250_HOSTPHYCTRL0_VATESTENB_MASK		(0x3 << 7)
 #define EXYNOS_5250_HOSTPHYCTRL0_VATESTENB_DUAL		(0x0 << 7)
 #define EXYNOS_5250_HOSTPHYCTRL0_VATESTENB_ID0		(0x1 << 7)
 #define EXYNOS_5250_HOSTPHYCTRL0_VATESTENB_ANALOGTEST	(0x2 << 7)
 #define EXYNOS_5250_HOSTPHYCTRL0_SIDDQ			BIT(6)
 #define EXYNOS_5250_HOSTPHYCTRL0_FORCESLEEP		BIT(5)
 #define EXYNOS_5250_HOSTPHYCTRL0_FORCESUSPEND		BIT(4)
 #define EXYNOS_5250_HOSTPHYCTRL0_WORDINTERFACE		BIT(3)
 #define EXYNOS_5250_HOSTPHYCTRL0_UTMISWRST		BIT(2)
 #define EXYNOS_5250_HOSTPHYCTRL0_LINKSWRST		BIT(1)
 #define EXYNOS_5250_HOSTPHYCTRL0_PHYSWRST		BIT(0)

 /* HSIC0 & HSIC1 */
 #define EXYNOS_5250_HSICPHYCTRL1			0x10
 #define EXYNOS_5250_HSICPHYCTRL2			0x20

 #define EXYNOS_5250_HSICPHYCTRLX_REFCLKSEL_MASK		(0x3 << 23)
 #define EXYNOS_5250_HSICPHYCTRLX_REFCLKSEL_DEFAULT	(0x2 << 23)
 #define EXYNOS_5250_HSICPHYCTRLX_REFCLKDIV_MASK		(0x7f << 16)
 #define EXYNOS_5250_HSICPHYCTRLX_REFCLKDIV_12		(0x24 << 16)
 #define EXYNOS_5250_HSICPHYCTRLX_REFCLKDIV_15		(0x1c << 16)
 #define EXYNOS_5250_HSICPHYCTRLX_REFCLKDIV_16		(0x1a << 16)
 #define EXYNOS_5250_HSICPHYCTRLX_REFCLKDIV_19_2		(0x15 << 16)
 #define EXYNOS_5250_HSICPHYCTRLX_REFCLKDIV_20		(0x14 << 16)
 #define EXYNOS_5250_HSICPHYCTRLX_SIDDQ			BIT(6)
 #define EXYNOS_5250_HSICPHYCTRLX_FORCESLEEP		BIT(5)
 #define EXYNOS_5250_HSICPHYCTRLX_FORCESUSPEND		BIT(4)
 #define EXYNOS_5250_HSICPHYCTRLX_WORDINTERFACE		BIT(3)
 #define EXYNOS_5250_HSICPHYCTRLX_UTMISWRST		BIT(2)
 #define EXYNOS_5250_HSICPHYCTRLX_PHYSWRST		BIT(0)

 /* EHCI control */
 #define EXYNOS_5250_HOSTEHCICTRL			0x30
 #define EXYNOS_5250_HOSTEHCICTRL_ENAINCRXALIGN		BIT(29)
 #define EXYNOS_5250_HOSTEHCICTRL_ENAINCR4		BIT(28)
 #define EXYNOS_5250_HOSTEHCICTRL_ENAINCR8		BIT(27)
 #define EXYNOS_5250_HOSTEHCICTRL_ENAINCR16		BIT(26)
 #define EXYNOS_5250_HOSTEHCICTRL_AUTOPPDONOVRCUREN	BIT(25)
 #define EXYNOS_5250_HOSTEHCICTRL_FLADJVAL0_SHIFT	19
 #define EXYNOS_5250_HOSTEHCICTRL_FLADJVAL0_MASK	\
 		(0x3f << EXYNOS_5250_HOSTEHCICTRL_FLADJVAL0_SHIFT)
 #define EXYNOS_5250_HOSTEHCICTRL_FLADJVAL1_SHIFT	13
 #define EXYNOS_5250_HOSTEHCICTRL_FLADJVAL1_MASK	\
 		(0x3f << EXYNOS_5250_HOSTEHCICTRL_FLADJVAL1_SHIFT)
 #define EXYNOS_5250_HOSTEHCICTRL_FLADJVAL2_SHIFT	7
 #define EXYNOS_5250_HOSTEHCICTRL_FLADJVAL0_MASK	\
 		(0x3f << EXYNOS_5250_HOSTEHCICTRL_FLADJVAL0_SHIFT)
 #define EXYNOS_5250_HOSTEHCICTRL_FLADJVALHOST_SHIFT	1
 #define EXYNOS_5250_HOSTEHCICTRL_FLADJVALHOST_MASK \
 		(0x1 << EXYNOS_5250_HOSTEHCICTRL_FLADJVALHOST_SHIFT)
 #define EXYNOS_5250_HOSTEHCICTRL_SIMULATIONMODE		BIT(0)

 /* OHCI control */
 #define EXYNOS_5250_HOSTOHCICTRL                        0x34
 #define EXYNOS_5250_HOSTOHCICTRL_FRAMELENVAL_SHIFT	1
 #define EXYNOS_5250_HOSTOHCICTRL_FRAMELENVAL_MASK \
 		(0x3ff << EXYNOS_5250_HOSTOHCICTRL_FRAMELENVAL_SHIFT)
 #define EXYNOS_5250_HOSTOHCICTRL_FRAMELENVALEN		BIT(0)

 /* USBOTG */
 #define EXYNOS_5250_USBOTGSYS				0x38
 #define EXYNOS_5250_USBOTGSYS_PHYLINK_SW_RESET		BIT(14)
 #define EXYNOS_5250_USBOTGSYS_LINK_SW_RST_UOTG		BIT(13)
 #define EXYNOS_5250_USBOTGSYS_PHY_SW_RST		BIT(12)
 #define EXYNOS_5250_USBOTGSYS_REFCLKSEL_SHIFT		9
 #define EXYNOS_5250_USBOTGSYS_REFCLKSEL_MASK \
 		(0x3 << EXYNOS_5250_USBOTGSYS_REFCLKSEL_SHIFT)
 #define EXYNOS_5250_USBOTGSYS_ID_PULLUP			BIT(8)
 #define EXYNOS_5250_USBOTGSYS_COMMON_ON			BIT(7)
 #define EXYNOS_5250_USBOTGSYS_FSEL_SHIFT		4
 #define EXYNOS_5250_USBOTGSYS_FSEL_MASK \
 		(0x3 << EXYNOS_5250_USBOTGSYS_FSEL_SHIFT)
 #define EXYNOS_5250_USBOTGSYS_FORCE_SLEEP		BIT(3)
 #define EXYNOS_5250_USBOTGSYS_OTGDISABLE		BIT(2)
 #define EXYNOS_5250_USBOTGSYS_SIDDQ_UOTG		BIT(1)
 #define EXYNOS_5250_USBOTGSYS_FORCE_SUSPEND		BIT(0)

 /* Isolation, configured in the power management unit */
 #define EXYNOS_5250_USB_ISOL_OTG_OFFSET		0x704
 #define EXYNOS_5250_USB_ISOL_OTG		BIT(0)
 #define EXYNOS_5250_USB_ISOL_HOST_OFFSET	0x708
 #define EXYNOS_5250_USB_ISOL_HOST		BIT(0)

 /* Mode swtich register */
 #define EXYNOS_5250_MODE_SWITCH_OFFSET		0x230
 #define EXYNOS_5250_MODE_SWITCH_MASK		1
 #define EXYNOS_5250_MODE_SWITCH_DEVICE		0
 #define EXYNOS_5250_MODE_SWITCH_HOST		1

 enum exynos4x12_phy_id {
 	EXYNOS5250_DEVICE,
 	EXYNOS5250_HOST,
 	EXYNOS5250_HSIC0,
 	EXYNOS5250_HSIC1,
 	EXYNOS5250_NUM_PHYS,
 };

 /*
  * exynos5250_rate_to_clk() converts the supplied clock rate to the value that
  * can be written to the phy register.
  */
 static int exynos5250_rate_to_clk(unsigned long rate, u32 *reg)
 {
 	/* EXYNOS_5250_FSEL_MASK */

 	switch (rate) {
 	case 9600 * KHZ:
 		*reg = EXYNOS_5250_FSEL_9MHZ6;
 		break;
 	case 10 * MHZ:
 		*reg = EXYNOS_5250_FSEL_10MHZ;
 		break;
 	case 12 * MHZ:
 		*reg = EXYNOS_5250_FSEL_12MHZ;
 		break;
 	case 19200 * KHZ:
 		*reg = EXYNOS_5250_FSEL_19MHZ2;
 		break;
 	case 20 * MHZ:
 		*reg = EXYNOS_5250_FSEL_20MHZ;
 		break;
 	case 24 * MHZ:
 		*reg = EXYNOS_5250_FSEL_24MHZ;
 		break;
 	case 50 * MHZ:
 		*reg = EXYNOS_5250_FSEL_50MHZ;
 		break;
 	default:
 		return -EINVAL;
 	}

 	return 0;
 }

 static void exynos5250_isol(struct samsung_usb2_phy_instance *inst, bool on)
 {
 	struct samsung_usb2_phy_driver *drv = inst->drv;
 	u32 offset;
 	u32 mask;

 	switch (inst->cfg->id) {
 	case EXYNOS5250_DEVICE:
 		offset = EXYNOS_5250_USB_ISOL_OTG_OFFSET;
 		mask = EXYNOS_5250_USB_ISOL_OTG;
 		break;
 	case EXYNOS5250_HOST:
 		offset = EXYNOS_5250_USB_ISOL_HOST_OFFSET;
 		mask = EXYNOS_5250_USB_ISOL_HOST;
 		break;
 	default:
 		return;
 	}

 	regmap_update_bits(drv->reg_pmu, offset, mask, on ? 0 : mask);
 }

 static int exynos5250_power_on(struct samsung_usb2_phy_instance *inst)
 {
 	struct samsung_usb2_phy_driver *drv = inst->drv;
 	u32 ctrl0;
 	u32 otg;
 	u32 ehci;
 	u32 ohci;
 	u32 hsic;

 	switch (inst->cfg->id) {
 	case EXYNOS5250_DEVICE:
 		regmap_update_bits(drv->reg_sys,
 				   EXYNOS_5250_MODE_SWITCH_OFFSET,
 				   EXYNOS_5250_MODE_SWITCH_MASK,
 				   EXYNOS_5250_MODE_SWITCH_DEVICE);

 		/* OTG configuration */
 		otg = readl(drv->reg_phy + EXYNOS_5250_USBOTGSYS);
 		/* The clock */
 		otg &= ~EXYNOS_5250_USBOTGSYS_FSEL_MASK;
 		otg |= drv->ref_reg_val << EXYNOS_5250_USBOTGSYS_FSEL_SHIFT;
 		/* Reset */
 		otg &= ~(EXYNOS_5250_USBOTGSYS_FORCE_SUSPEND |
 			EXYNOS_5250_USBOTGSYS_FORCE_SLEEP |
 			EXYNOS_5250_USBOTGSYS_SIDDQ_UOTG);
 		otg |=	EXYNOS_5250_USBOTGSYS_PHY_SW_RST |
 			EXYNOS_5250_USBOTGSYS_PHYLINK_SW_RESET |
 			EXYNOS_5250_USBOTGSYS_LINK_SW_RST_UOTG |
 			EXYNOS_5250_USBOTGSYS_OTGDISABLE;
 		/* Ref clock */
 		otg &=	~EXYNOS_5250_USBOTGSYS_REFCLKSEL_MASK;
 		otg |=  EXYNOS_5250_REFCLKSEL_CLKCORE <<
 					EXYNOS_5250_USBOTGSYS_REFCLKSEL_SHIFT;
 		writel(otg, drv->reg_phy + EXYNOS_5250_USBOTGSYS);
 		udelay(100);
 		otg &= ~(EXYNOS_5250_USBOTGSYS_PHY_SW_RST |
 			EXYNOS_5250_USBOTGSYS_LINK_SW_RST_UOTG |
 			EXYNOS_5250_USBOTGSYS_PHYLINK_SW_RESET |
 			EXYNOS_5250_USBOTGSYS_OTGDISABLE);
 		writel(otg, drv->reg_phy + EXYNOS_5250_USBOTGSYS);


 		break;
 	case EXYNOS5250_HOST:
 	case EXYNOS5250_HSIC0:
 	case EXYNOS5250_HSIC1:
 		/* Host registers configuration */
 		ctrl0 = readl(drv->reg_phy + EXYNOS_5250_HOSTPHYCTRL0);
 		/* The clock */
 		ctrl0 &= ~EXYNOS_5250_HOSTPHYCTRL0_FSEL_MASK;
 		ctrl0 |= drv->ref_reg_val <<
 					EXYNOS_5250_HOSTPHYCTRL0_FSEL_SHIFT;

 		/* Reset */
 		ctrl0 &=	~(EXYNOS_5250_HOSTPHYCTRL0_PHYSWRST |
 				EXYNOS_5250_HOSTPHYCTRL0_PHYSWRSTALL |
 				EXYNOS_5250_HOSTPHYCTRL0_SIDDQ |
 				EXYNOS_5250_HOSTPHYCTRL0_FORCESUSPEND |
 				EXYNOS_5250_HOSTPHYCTRL0_FORCESLEEP);
 		ctrl0 |=	EXYNOS_5250_HOSTPHYCTRL0_LINKSWRST |
 				EXYNOS_5250_HOSTPHYCTRL0_UTMISWRST |
 				EXYNOS_5250_HOSTPHYCTRL0_COMMON_ON_N;
 		writel(ctrl0, drv->reg_phy + EXYNOS_5250_HOSTPHYCTRL0);
 		udelay(10);
 		ctrl0 &=	~(EXYNOS_5250_HOSTPHYCTRL0_LINKSWRST |
 				EXYNOS_5250_HOSTPHYCTRL0_UTMISWRST);
 		writel(ctrl0, drv->reg_phy + EXYNOS_5250_HOSTPHYCTRL0);

 		/* OTG configuration */
 		otg = readl(drv->reg_phy + EXYNOS_5250_USBOTGSYS);
 		/* The clock */
 		otg &= ~EXYNOS_5250_USBOTGSYS_FSEL_MASK;
 		otg |= drv->ref_reg_val << EXYNOS_5250_USBOTGSYS_FSEL_SHIFT;
 		/* Reset */
 		otg &= ~(EXYNOS_5250_USBOTGSYS_FORCE_SUSPEND |
 			EXYNOS_5250_USBOTGSYS_FORCE_SLEEP |
 			EXYNOS_5250_USBOTGSYS_SIDDQ_UOTG);
 		otg |=	EXYNOS_5250_USBOTGSYS_PHY_SW_RST |
 			EXYNOS_5250_USBOTGSYS_PHYLINK_SW_RESET |
 			EXYNOS_5250_USBOTGSYS_LINK_SW_RST_UOTG |
 			EXYNOS_5250_USBOTGSYS_OTGDISABLE;
 		/* Ref clock */
 		otg &=	~EXYNOS_5250_USBOTGSYS_REFCLKSEL_MASK;
 		otg |=  EXYNOS_5250_REFCLKSEL_CLKCORE <<
 					EXYNOS_5250_USBOTGSYS_REFCLKSEL_SHIFT;
 		writel(otg, drv->reg_phy + EXYNOS_5250_USBOTGSYS);
 		udelay(10);
 		otg &= ~(EXYNOS_5250_USBOTGSYS_PHY_SW_RST |
 			EXYNOS_5250_USBOTGSYS_LINK_SW_RST_UOTG |
 			EXYNOS_5250_USBOTGSYS_PHYLINK_SW_RESET);

 		/* HSIC phy configuration */
 		hsic = (EXYNOS_5250_HSICPHYCTRLX_REFCLKDIV_12 |
 				EXYNOS_5250_HSICPHYCTRLX_REFCLKSEL_DEFAULT |
 				EXYNOS_5250_HSICPHYCTRLX_PHYSWRST);
 		writel(hsic, drv->reg_phy + EXYNOS_5250_HSICPHYCTRL1);
 		writel(hsic, drv->reg_phy + EXYNOS_5250_HSICPHYCTRL2);
 		udelay(10);
 		hsic &= ~EXYNOS_5250_HSICPHYCTRLX_PHYSWRST;
 		writel(hsic, drv->reg_phy + EXYNOS_5250_HSICPHYCTRL1);
 		writel(hsic, drv->reg_phy + EXYNOS_5250_HSICPHYCTRL2);
 		/* The following delay is necessary for the reset sequence to be
 		 * completed */
 		udelay(80);

 		/* Enable EHCI DMA burst */
 		ehci = readl(drv->reg_phy + EXYNOS_5250_HOSTEHCICTRL);
 		ehci |=	EXYNOS_5250_HOSTEHCICTRL_ENAINCRXALIGN |
 			EXYNOS_5250_HOSTEHCICTRL_ENAINCR4 |
 			EXYNOS_5250_HOSTEHCICTRL_ENAINCR8 |
 			EXYNOS_5250_HOSTEHCICTRL_ENAINCR16;
 		writel(ehci, drv->reg_phy + EXYNOS_5250_HOSTEHCICTRL);

 		/* OHCI settings */
 		ohci = readl(drv->reg_phy + EXYNOS_5250_HOSTOHCICTRL);
 		/* Following code is based on the old driver */
 		ohci |=	0x1 << 3;
 		writel(ohci, drv->reg_phy + EXYNOS_5250_HOSTOHCICTRL);

 		break;
 	}
 	exynos5250_isol(inst, 0);

 	return 0;
 }

 static int exynos5250_power_off(struct samsung_usb2_phy_instance *inst)
 {
 	struct samsung_usb2_phy_driver *drv = inst->drv;
 	u32 ctrl0;
 	u32 otg;
 	u32 hsic;

 	exynos5250_isol(inst, 1);

 	switch (inst->cfg->id) {
 	case EXYNOS5250_DEVICE:
 		otg = readl(drv->reg_phy + EXYNOS_5250_USBOTGSYS);
 		otg |= (EXYNOS_5250_USBOTGSYS_FORCE_SUSPEND |
 			EXYNOS_5250_USBOTGSYS_SIDDQ_UOTG |
 			EXYNOS_5250_USBOTGSYS_FORCE_SLEEP);
 		writel(otg, drv->reg_phy + EXYNOS_5250_USBOTGSYS);
 		break;
 	case EXYNOS5250_HOST:
 		ctrl0 = readl(drv->reg_phy + EXYNOS_5250_HOSTPHYCTRL0);
 		ctrl0 |= (EXYNOS_5250_HOSTPHYCTRL0_SIDDQ |
 				EXYNOS_5250_HOSTPHYCTRL0_FORCESUSPEND |
 				EXYNOS_5250_HOSTPHYCTRL0_FORCESLEEP |
 				EXYNOS_5250_HOSTPHYCTRL0_PHYSWRST |
 				EXYNOS_5250_HOSTPHYCTRL0_PHYSWRSTALL);
 		writel(ctrl0, drv->reg_phy + EXYNOS_5250_HOSTPHYCTRL0);
 		break;
 	case EXYNOS5250_HSIC0:
 	case EXYNOS5250_HSIC1:
 		hsic = (EXYNOS_5250_HSICPHYCTRLX_REFCLKDIV_12 |
 				EXYNOS_5250_HSICPHYCTRLX_REFCLKSEL_DEFAULT |
 				EXYNOS_5250_HSICPHYCTRLX_SIDDQ |
 				EXYNOS_5250_HSICPHYCTRLX_FORCESLEEP |
 				EXYNOS_5250_HSICPHYCTRLX_FORCESUSPEND
 				);
 		writel(hsic, drv->reg_phy + EXYNOS_5250_HSICPHYCTRL1);
 		writel(hsic, drv->reg_phy + EXYNOS_5250_HSICPHYCTRL2);
 		break;
 	}

 	return 0;
 }


 static const struct samsung_usb2_common_phy exynos5250_phys[] = {
 	{
 		.label		= "device",
 		.id		= EXYNOS5250_DEVICE,
 		.power_on	= exynos5250_power_on,
 		.power_off	= exynos5250_power_off,
 	},
 	{
 		.label		= "host",
 		.id		= EXYNOS5250_HOST,
 		.power_on	= exynos5250_power_on,
 		.power_off	= exynos5250_power_off,
 	},
 	{
 		.label		= "hsic0",
 		.id		= EXYNOS5250_HSIC0,
 		.power_on	= exynos5250_power_on,
 		.power_off	= exynos5250_power_off,
 	},
 	{
 		.label		= "hsic1",
 		.id		= EXYNOS5250_HSIC1,
 		.power_on	= exynos5250_power_on,
 		.power_off	= exynos5250_power_off,
 	},
 };

 const struct samsung_usb2_phy_config exynos5250_usb2_phy_config = {
 	.has_mode_switch	= 1,
 	.num_phys		= EXYNOS5250_NUM_PHYS,
 	.phys			= exynos5250_phys,
 	.rate_to_clk		= exynos5250_rate_to_clk,
 };
	/*
	* Samsung SoC USB 1.1/2.0 PHY driver - Exynos 5250 support
	*
	* Copyright (C) 2013 Samsung Electronics Co., Ltd.
	* Author: Kamil Debski <k.debski@samsung.com>
	*
	* This program is free software; you can redistribute it and/or modify
	* it under the terms of the GNU General Public License version 2 as
	* published by the Free Software Foundation.
	*/

	#include <linux/delay.h>
	#include <linux/io.h>
	#include <linux/phy/phy.h>
	#include <linux/regmap.h>
	#include "phy-samsung-usb2.h"

	/* Exynos USB PHY registers */
	#define EXYNOS_5250_REFCLKSEL_CRYSTAL 0x0
	#define EXYNOS_5250_REFCLKSEL_XO 0x1
	#define EXYNOS_5250_REFCLKSEL_CLKCORE 0x2

	#define EXYNOS_5250_FSEL_9MHZ6 0x0
	#define EXYNOS_5250_FSEL_10MHZ 0x1
	#define EXYNOS_5250_FSEL_12MHZ 0x2
	#define EXYNOS_5250_FSEL_19MHZ2 0x3
	#define EXYNOS_5250_FSEL_20MHZ 0x4
	#define EXYNOS_5250_FSEL_24MHZ 0x5
	#define EXYNOS_5250_FSEL_50MHZ 0x7

	/* Normal host */
	#define EXYNOS_5250_HOSTPHYCTRL0 0x0

	#define EXYNOS_5250_HOSTPHYCTRL0_PHYSWRSTALL BIT(31)
	#define EXYNOS_5250_HOSTPHYCTRL0_REFCLKSEL_SHIFT 19
	#define EXYNOS_5250_HOSTPHYCTRL0_REFCLKSEL_MASK \
	(0x3 << EXYNOS_5250_HOSTPHYCTRL0_REFCLKSEL_SHIFT)
	#define EXYNOS_5250_HOSTPHYCTRL0_FSEL_SHIFT 16
	#define EXYNOS_5250_HOSTPHYCTRL0_FSEL_MASK \
	(0x7 << EXYNOS_5250_HOSTPHYCTRL0_FSEL_SHIFT)
	#define EXYNOS_5250_HOSTPHYCTRL0_TESTBURNIN BIT(11)
	#define EXYNOS_5250_HOSTPHYCTRL0_RETENABLE BIT(10)
	#define EXYNOS_5250_HOSTPHYCTRL0_COMMON_ON_N BIT(9)
	#define EXYNOS_5250_HOSTPHYCTRL0_VATESTENB_MASK (0x3 << 7)
	#define EXYNOS_5250_HOSTPHYCTRL0_VATESTENB_DUAL (0x0 << 7)
	#define EXYNOS_5250_HOSTPHYCTRL0_VATESTENB_ID0 (0x1 << 7)
	#define EXYNOS_5250_HOSTPHYCTRL0_VATESTENB_ANALOGTEST (0x2 << 7)
	#define EXYNOS_5250_HOSTPHYCTRL0_SIDDQ BIT(6)
	#define EXYNOS_5250_HOSTPHYCTRL0_FORCESLEEP BIT(5)
	#define EXYNOS_5250_HOSTPHYCTRL0_FORCESUSPEND BIT(4)
	#define EXYNOS_5250_HOSTPHYCTRL0_WORDINTERFACE BIT(3)
	#define EXYNOS_5250_HOSTPHYCTRL0_UTMISWRST BIT(2)
	#define EXYNOS_5250_HOSTPHYCTRL0_LINKSWRST BIT(1)
	#define EXYNOS_5250_HOSTPHYCTRL0_PHYSWRST BIT(0)

	/* HSIC0 & HSIC1 */
	#define EXYNOS_5250_HSICPHYCTRL1 0x10
	#define EXYNOS_5250_HSICPHYCTRL2 0x20

	#define EXYNOS_5250_HSICPHYCTRLX_REFCLKSEL_MASK (0x3 << 23)
	#define EXYNOS_5250_HSICPHYCTRLX_REFCLKSEL_DEFAULT (0x2 << 23)
	#define EXYNOS_5250_HSICPHYCTRLX_REFCLKDIV_MASK (0x7f << 16)
	#define EXYNOS_5250_HSICPHYCTRLX_REFCLKDIV_12 (0x24 << 16)
	#define EXYNOS_5250_HSICPHYCTRLX_REFCLKDIV_15 (0x1c << 16)
	#define EXYNOS_5250_HSICPHYCTRLX_REFCLKDIV_16 (0x1a << 16)
	#define EXYNOS_5250_HSICPHYCTRLX_REFCLKDIV_19_2 (0x15 << 16)
	#define EXYNOS_5250_HSICPHYCTRLX_REFCLKDIV_20 (0x14 << 16)
	#define EXYNOS_5250_HSICPHYCTRLX_SIDDQ BIT(6)
	#define EXYNOS_5250_HSICPHYCTRLX_FORCESLEEP BIT(5)
	#define EXYNOS_5250_HSICPHYCTRLX_FORCESUSPEND BIT(4)
	#define EXYNOS_5250_HSICPHYCTRLX_WORDINTERFACE BIT(3)
	#define EXYNOS_5250_HSICPHYCTRLX_UTMISWRST BIT(2)
	#define EXYNOS_5250_HSICPHYCTRLX_PHYSWRST BIT(0)

	/* EHCI control */
	#define EXYNOS_5250_HOSTEHCICTRL 0x30
	#define EXYNOS_5250_HOSTEHCICTRL_ENAINCRXALIGN BIT(29)
	#define EXYNOS_5250_HOSTEHCICTRL_ENAINCR4 BIT(28)
	#define EXYNOS_5250_HOSTEHCICTRL_ENAINCR8 BIT(27)
	#define EXYNOS_5250_HOSTEHCICTRL_ENAINCR16 BIT(26)
	#define EXYNOS_5250_HOSTEHCICTRL_AUTOPPDONOVRCUREN BIT(25)
	#define EXYNOS_5250_HOSTEHCICTRL_FLADJVAL0_SHIFT 19
	#define EXYNOS_5250_HOSTEHCICTRL_FLADJVAL0_MASK \
	(0x3f << EXYNOS_5250_HOSTEHCICTRL_FLADJVAL0_SHIFT)
	#define EXYNOS_5250_HOSTEHCICTRL_FLADJVAL1_SHIFT 13
	#define EXYNOS_5250_HOSTEHCICTRL_FLADJVAL1_MASK \
	(0x3f << EXYNOS_5250_HOSTEHCICTRL_FLADJVAL1_SHIFT)
	#define EXYNOS_5250_HOSTEHCICTRL_FLADJVAL2_SHIFT 7
	#define EXYNOS_5250_HOSTEHCICTRL_FLADJVAL0_MASK \
	(0x3f << EXYNOS_5250_HOSTEHCICTRL_FLADJVAL0_SHIFT)
	#define EXYNOS_5250_HOSTEHCICTRL_FLADJVALHOST_SHIFT 1
	#define EXYNOS_5250_HOSTEHCICTRL_FLADJVALHOST_MASK \
	(0x1 << EXYNOS_5250_HOSTEHCICTRL_FLADJVALHOST_SHIFT)
	#define EXYNOS_5250_HOSTEHCICTRL_SIMULATIONMODE BIT(0)

	/* OHCI control */
	#define EXYNOS_5250_HOSTOHCICTRL 0x34
	#define EXYNOS_5250_HOSTOHCICTRL_FRAMELENVAL_SHIFT 1
	#define EXYNOS_5250_HOSTOHCICTRL_FRAMELENVAL_MASK \
	(0x3ff << EXYNOS_5250_HOSTOHCICTRL_FRAMELENVAL_SHIFT)
	#define EXYNOS_5250_HOSTOHCICTRL_FRAMELENVALEN BIT(0)

	/* USBOTG */
	#define EXYNOS_5250_USBOTGSYS 0x38
	#define EXYNOS_5250_USBOTGSYS_PHYLINK_SW_RESET BIT(14)
	#define EXYNOS_5250_USBOTGSYS_LINK_SW_RST_UOTG BIT(13)
	#define EXYNOS_5250_USBOTGSYS_PHY_SW_RST BIT(12)
	#define EXYNOS_5250_USBOTGSYS_REFCLKSEL_SHIFT 9
	#define EXYNOS_5250_USBOTGSYS_REFCLKSEL_MASK \
	(0x3 << EXYNOS_5250_USBOTGSYS_REFCLKSEL_SHIFT)
	#define EXYNOS_5250_USBOTGSYS_ID_PULLUP BIT(8)
	#define EXYNOS_5250_USBOTGSYS_COMMON_ON BIT(7)
	#define EXYNOS_5250_USBOTGSYS_FSEL_SHIFT 4
	#define EXYNOS_5250_USBOTGSYS_FSEL_MASK \
	(0x3 << EXYNOS_5250_USBOTGSYS_FSEL_SHIFT)
	#define EXYNOS_5250_USBOTGSYS_FORCE_SLEEP BIT(3)
	#define EXYNOS_5250_USBOTGSYS_OTGDISABLE BIT(2)
	#define EXYNOS_5250_USBOTGSYS_SIDDQ_UOTG BIT(1)
	#define EXYNOS_5250_USBOTGSYS_FORCE_SUSPEND BIT(0)

	/* Isolation, configured in the power management unit */
	#define EXYNOS_5250_USB_ISOL_OTG_OFFSET 0x704
	#define EXYNOS_5250_USB_ISOL_OTG BIT(0)
	#define EXYNOS_5250_USB_ISOL_HOST_OFFSET 0x708
	#define EXYNOS_5250_USB_ISOL_HOST BIT(0)

	/* Mode swtich register */
	#define EXYNOS_5250_MODE_SWITCH_OFFSET 0x230
	#define EXYNOS_5250_MODE_SWITCH_MASK 1
	#define EXYNOS_5250_MODE_SWITCH_DEVICE 0
	#define EXYNOS_5250_MODE_SWITCH_HOST 1

	enum exynos4x12_phy_id {
	EXYNOS5250_DEVICE,
	EXYNOS5250_HOST,
	EXYNOS5250_HSIC0,
	EXYNOS5250_HSIC1,
	EXYNOS5250_NUM_PHYS,
	};

	/*
	* exynos5250_rate_to_clk() converts the supplied clock rate to the value that
	* can be written to the phy register.
	*/
	static int exynos5250_rate_to_clk(unsigned long rate, u32 *reg)
	{
	/* EXYNOS_5250_FSEL_MASK */

	switch (rate) {
	case 9600 * KHZ:
	*reg = EXYNOS_5250_FSEL_9MHZ6;
	break;
	case 10 * MHZ:
	*reg = EXYNOS_5250_FSEL_10MHZ;
	break;
	case 12 * MHZ:
	*reg = EXYNOS_5250_FSEL_12MHZ;
	break;
	case 19200 * KHZ:
	*reg = EXYNOS_5250_FSEL_19MHZ2;
	break;
	case 20 * MHZ:
	*reg = EXYNOS_5250_FSEL_20MHZ;
	break;
	case 24 * MHZ:
	*reg = EXYNOS_5250_FSEL_24MHZ;
	break;
	case 50 * MHZ:
	*reg = EXYNOS_5250_FSEL_50MHZ;
	break;
	default:
	return -EINVAL;
	}

	return 0;
	}

	static void exynos5250_isol(struct samsung_usb2_phy_instance *inst, bool on)
	{
	struct samsung_usb2_phy_driver *drv = inst->drv;
	u32 offset;
	u32 mask;

	switch (inst->cfg->id) {
	case EXYNOS5250_DEVICE:
	offset = EXYNOS_5250_USB_ISOL_OTG_OFFSET;
	mask = EXYNOS_5250_USB_ISOL_OTG;
	break;
	case EXYNOS5250_HOST:
	offset = EXYNOS_5250_USB_ISOL_HOST_OFFSET;
	mask = EXYNOS_5250_USB_ISOL_HOST;
	break;
	default:
	return;
	}

	regmap_update_bits(drv->reg_pmu, offset, mask, on ? 0 : mask);
	}

	static int exynos5250_power_on(struct samsung_usb2_phy_instance *inst)
	{
	struct samsung_usb2_phy_driver *drv = inst->drv;
	u32 ctrl0;
	u32 otg;
	u32 ehci;
	u32 ohci;
	u32 hsic;

	switch (inst->cfg->id) {
	case EXYNOS5250_DEVICE:
	regmap_update_bits(drv->reg_sys,
	EXYNOS_5250_MODE_SWITCH_OFFSET,
	EXYNOS_5250_MODE_SWITCH_MASK,
	EXYNOS_5250_MODE_SWITCH_DEVICE);

	/* OTG configuration */
	otg = readl(drv->reg_phy + EXYNOS_5250_USBOTGSYS);
	/* The clock */
	otg &= ~EXYNOS_5250_USBOTGSYS_FSEL_MASK;
	otg \|= drv->ref_reg_val << EXYNOS_5250_USBOTGSYS_FSEL_SHIFT;
	/* Reset */
	otg &= ~(EXYNOS_5250_USBOTGSYS_FORCE_SUSPEND \|
	EXYNOS_5250_USBOTGSYS_FORCE_SLEEP \|
	EXYNOS_5250_USBOTGSYS_SIDDQ_UOTG);
	otg \|= EXYNOS_5250_USBOTGSYS_PHY_SW_RST \|
	EXYNOS_5250_USBOTGSYS_PHYLINK_SW_RESET \|
	EXYNOS_5250_USBOTGSYS_LINK_SW_RST_UOTG \|
	EXYNOS_5250_USBOTGSYS_OTGDISABLE;
	/* Ref clock */
	otg &= ~EXYNOS_5250_USBOTGSYS_REFCLKSEL_MASK;
	otg \|= EXYNOS_5250_REFCLKSEL_CLKCORE <<
	EXYNOS_5250_USBOTGSYS_REFCLKSEL_SHIFT;
	writel(otg, drv->reg_phy + EXYNOS_5250_USBOTGSYS);
	udelay(100);
	otg &= ~(EXYNOS_5250_USBOTGSYS_PHY_SW_RST \|
	EXYNOS_5250_USBOTGSYS_LINK_SW_RST_UOTG \|
	EXYNOS_5250_USBOTGSYS_PHYLINK_SW_RESET \|
	EXYNOS_5250_USBOTGSYS_OTGDISABLE);
	writel(otg, drv->reg_phy + EXYNOS_5250_USBOTGSYS);


	break;
	case EXYNOS5250_HOST:
	case EXYNOS5250_HSIC0:
	case EXYNOS5250_HSIC1:
	/* Host registers configuration */
	ctrl0 = readl(drv->reg_phy + EXYNOS_5250_HOSTPHYCTRL0);
	/* The clock */
	ctrl0 &= ~EXYNOS_5250_HOSTPHYCTRL0_FSEL_MASK;
	ctrl0 \|= drv->ref_reg_val <<
	EXYNOS_5250_HOSTPHYCTRL0_FSEL_SHIFT;

	/* Reset */
	ctrl0 &= ~(EXYNOS_5250_HOSTPHYCTRL0_PHYSWRST \|
	EXYNOS_5250_HOSTPHYCTRL0_PHYSWRSTALL \|
	EXYNOS_5250_HOSTPHYCTRL0_SIDDQ \|
	EXYNOS_5250_HOSTPHYCTRL0_FORCESUSPEND \|
	EXYNOS_5250_HOSTPHYCTRL0_FORCESLEEP);
	ctrl0 \|= EXYNOS_5250_HOSTPHYCTRL0_LINKSWRST \|
	EXYNOS_5250_HOSTPHYCTRL0_UTMISWRST \|
	EXYNOS_5250_HOSTPHYCTRL0_COMMON_ON_N;
	writel(ctrl0, drv->reg_phy + EXYNOS_5250_HOSTPHYCTRL0);
	udelay(10);
	ctrl0 &= ~(EXYNOS_5250_HOSTPHYCTRL0_LINKSWRST \|
	EXYNOS_5250_HOSTPHYCTRL0_UTMISWRST);
	writel(ctrl0, drv->reg_phy + EXYNOS_5250_HOSTPHYCTRL0);

	/* OTG configuration */
	otg = readl(drv->reg_phy + EXYNOS_5250_USBOTGSYS);
	/* The clock */
	otg &= ~EXYNOS_5250_USBOTGSYS_FSEL_MASK;
	otg \|= drv->ref_reg_val << EXYNOS_5250_USBOTGSYS_FSEL_SHIFT;
	/* Reset */
	otg &= ~(EXYNOS_5250_USBOTGSYS_FORCE_SUSPEND \|
	EXYNOS_5250_USBOTGSYS_FORCE_SLEEP \|
	EXYNOS_5250_USBOTGSYS_SIDDQ_UOTG);
	otg \|= EXYNOS_5250_USBOTGSYS_PHY_SW_RST \|
	EXYNOS_5250_USBOTGSYS_PHYLINK_SW_RESET \|
	EXYNOS_5250_USBOTGSYS_LINK_SW_RST_UOTG \|
	EXYNOS_5250_USBOTGSYS_OTGDISABLE;
	/* Ref clock */
	otg &= ~EXYNOS_5250_USBOTGSYS_REFCLKSEL_MASK;
	otg \|= EXYNOS_5250_REFCLKSEL_CLKCORE <<
	EXYNOS_5250_USBOTGSYS_REFCLKSEL_SHIFT;
	writel(otg, drv->reg_phy + EXYNOS_5250_USBOTGSYS);
	udelay(10);
	otg &= ~(EXYNOS_5250_USBOTGSYS_PHY_SW_RST \|
	EXYNOS_5250_USBOTGSYS_LINK_SW_RST_UOTG \|
	EXYNOS_5250_USBOTGSYS_PHYLINK_SW_RESET);

	/* HSIC phy configuration */
	hsic = (EXYNOS_5250_HSICPHYCTRLX_REFCLKDIV_12 \|
	EXYNOS_5250_HSICPHYCTRLX_REFCLKSEL_DEFAULT \|
	EXYNOS_5250_HSICPHYCTRLX_PHYSWRST);
	writel(hsic, drv->reg_phy + EXYNOS_5250_HSICPHYCTRL1);
	writel(hsic, drv->reg_phy + EXYNOS_5250_HSICPHYCTRL2);
	udelay(10);
	hsic &= ~EXYNOS_5250_HSICPHYCTRLX_PHYSWRST;
	writel(hsic, drv->reg_phy + EXYNOS_5250_HSICPHYCTRL1);
	writel(hsic, drv->reg_phy + EXYNOS_5250_HSICPHYCTRL2);
	/* The following delay is necessary for the reset sequence to be
	* completed */
	udelay(80);

	/* Enable EHCI DMA burst */
	ehci = readl(drv->reg_phy + EXYNOS_5250_HOSTEHCICTRL);
	ehci \|= EXYNOS_5250_HOSTEHCICTRL_ENAINCRXALIGN \|
	EXYNOS_5250_HOSTEHCICTRL_ENAINCR4 \|
	EXYNOS_5250_HOSTEHCICTRL_ENAINCR8 \|
	EXYNOS_5250_HOSTEHCICTRL_ENAINCR16;
	writel(ehci, drv->reg_phy + EXYNOS_5250_HOSTEHCICTRL);

	/* OHCI settings */
	ohci = readl(drv->reg_phy + EXYNOS_5250_HOSTOHCICTRL);
	/* Following code is based on the old driver */
	ohci \|= 0x1 << 3;
	writel(ohci, drv->reg_phy + EXYNOS_5250_HOSTOHCICTRL);

	break;
	}
	exynos5250_isol(inst, 0);

	return 0;
	}

	static int exynos5250_power_off(struct samsung_usb2_phy_instance *inst)
	{
	struct samsung_usb2_phy_driver *drv = inst->drv;
	u32 ctrl0;
	u32 otg;
	u32 hsic;

	exynos5250_isol(inst, 1);

	switch (inst->cfg->id) {
	case EXYNOS5250_DEVICE:
	otg = readl(drv->reg_phy + EXYNOS_5250_USBOTGSYS);
	otg \|= (EXYNOS_5250_USBOTGSYS_FORCE_SUSPEND \|
	EXYNOS_5250_USBOTGSYS_SIDDQ_UOTG \|
	EXYNOS_5250_USBOTGSYS_FORCE_SLEEP);
	writel(otg, drv->reg_phy + EXYNOS_5250_USBOTGSYS);
	break;
	case EXYNOS5250_HOST:
	ctrl0 = readl(drv->reg_phy + EXYNOS_5250_HOSTPHYCTRL0);
	ctrl0 \|= (EXYNOS_5250_HOSTPHYCTRL0_SIDDQ \|
	EXYNOS_5250_HOSTPHYCTRL0_FORCESUSPEND \|
	EXYNOS_5250_HOSTPHYCTRL0_FORCESLEEP \|
	EXYNOS_5250_HOSTPHYCTRL0_PHYSWRST \|
	EXYNOS_5250_HOSTPHYCTRL0_PHYSWRSTALL);
	writel(ctrl0, drv->reg_phy + EXYNOS_5250_HOSTPHYCTRL0);
	break;
	case EXYNOS5250_HSIC0:
	case EXYNOS5250_HSIC1:
	hsic = (EXYNOS_5250_HSICPHYCTRLX_REFCLKDIV_12 \|
	EXYNOS_5250_HSICPHYCTRLX_REFCLKSEL_DEFAULT \|
	EXYNOS_5250_HSICPHYCTRLX_SIDDQ \|
	EXYNOS_5250_HSICPHYCTRLX_FORCESLEEP \|
	EXYNOS_5250_HSICPHYCTRLX_FORCESUSPEND
	);
	writel(hsic, drv->reg_phy + EXYNOS_5250_HSICPHYCTRL1);
	writel(hsic, drv->reg_phy + EXYNOS_5250_HSICPHYCTRL2);
	break;
	}

	return 0;
	}


	static const struct samsung_usb2_common_phy exynos5250_phys[] = {
	{
	.label = "device",
	.id = EXYNOS5250_DEVICE,
	.power_on = exynos5250_power_on,
	.power_off = exynos5250_power_off,
	},
	{
	.label = "host",
	.id = EXYNOS5250_HOST,
	.power_on = exynos5250_power_on,
	.power_off = exynos5250_power_off,
	},
	{
	.label = "hsic0",
	.id = EXYNOS5250_HSIC0,
	.power_on = exynos5250_power_on,
	.power_off = exynos5250_power_off,
	},
	{
	.label = "hsic1",
	.id = EXYNOS5250_HSIC1,
	.power_on = exynos5250_power_on,
	.power_off = exynos5250_power_off,
	},
	};

	const struct samsung_usb2_phy_config exynos5250_usb2_phy_config = {
	.has_mode_switch = 1,
	.num_phys = EXYNOS5250_NUM_PHYS,
	.phys = exynos5250_phys,
	.rate_to_clk = exynos5250_rate_to_clk,
	};