[mirror_ubuntu-zesty-kernel.git] / drivers / phy / phy-exynos5250-usb2.c

/*
 * 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,
};
Commit	Line	Data
64bf2b23 KD	1	/*
	2	* Samsung SoC USB 1.1/2.0 PHY driver - Exynos 5250 support
	3	*
	4	* Copyright (C) 2013 Samsung Electronics Co., Ltd.
	5	* Author: Kamil Debski <k.debski@samsung.com>
	6	*
	7	* This program is free software; you can redistribute it and/or modify
	8	* it under the terms of the GNU General Public License version 2 as
	9	* published by the Free Software Foundation.
	10	*/
	11
	12	#include <linux/delay.h>
	13	#include <linux/io.h>
	14	#include <linux/phy/phy.h>
	15	#include <linux/regmap.h>
	16	#include "phy-samsung-usb2.h"
	17
	18	/* Exynos USB PHY registers */
	19	#define EXYNOS_5250_REFCLKSEL_CRYSTAL 0x0
	20	#define EXYNOS_5250_REFCLKSEL_XO 0x1
	21	#define EXYNOS_5250_REFCLKSEL_CLKCORE 0x2
	22
	23	#define EXYNOS_5250_FSEL_9MHZ6 0x0
	24	#define EXYNOS_5250_FSEL_10MHZ 0x1
	25	#define EXYNOS_5250_FSEL_12MHZ 0x2
	26	#define EXYNOS_5250_FSEL_19MHZ2 0x3
	27	#define EXYNOS_5250_FSEL_20MHZ 0x4
	28	#define EXYNOS_5250_FSEL_24MHZ 0x5
	29	#define EXYNOS_5250_FSEL_50MHZ 0x7
	30
	31	/* Normal host */
	32	#define EXYNOS_5250_HOSTPHYCTRL0 0x0
	33
	34	#define EXYNOS_5250_HOSTPHYCTRL0_PHYSWRSTALL BIT(31)
	35	#define EXYNOS_5250_HOSTPHYCTRL0_REFCLKSEL_SHIFT 19
	36	#define EXYNOS_5250_HOSTPHYCTRL0_REFCLKSEL_MASK \
	37	(0x3 << EXYNOS_5250_HOSTPHYCTRL0_REFCLKSEL_SHIFT)
	38	#define EXYNOS_5250_HOSTPHYCTRL0_FSEL_SHIFT 16
	39	#define EXYNOS_5250_HOSTPHYCTRL0_FSEL_MASK \
	40	(0x7 << EXYNOS_5250_HOSTPHYCTRL0_FSEL_SHIFT)
	41	#define EXYNOS_5250_HOSTPHYCTRL0_TESTBURNIN BIT(11)
	42	#define EXYNOS_5250_HOSTPHYCTRL0_RETENABLE BIT(10)
	43	#define EXYNOS_5250_HOSTPHYCTRL0_COMMON_ON_N BIT(9)
	44	#define EXYNOS_5250_HOSTPHYCTRL0_VATESTENB_MASK (0x3 << 7)
	45	#define EXYNOS_5250_HOSTPHYCTRL0_VATESTENB_DUAL (0x0 << 7)
	46	#define EXYNOS_5250_HOSTPHYCTRL0_VATESTENB_ID0 (0x1 << 7)
	47	#define EXYNOS_5250_HOSTPHYCTRL0_VATESTENB_ANALOGTEST (0x2 << 7)
	48	#define EXYNOS_5250_HOSTPHYCTRL0_SIDDQ BIT(6)
	49	#define EXYNOS_5250_HOSTPHYCTRL0_FORCESLEEP BIT(5)
	50	#define EXYNOS_5250_HOSTPHYCTRL0_FORCESUSPEND BIT(4)
	51	#define EXYNOS_5250_HOSTPHYCTRL0_WORDINTERFACE BIT(3)
	52	#define EXYNOS_5250_HOSTPHYCTRL0_UTMISWRST BIT(2)
	53	#define EXYNOS_5250_HOSTPHYCTRL0_LINKSWRST BIT(1)
	54	#define EXYNOS_5250_HOSTPHYCTRL0_PHYSWRST BIT(0)
	55
	56	/* HSIC0 & HSIC1 */
	57	#define EXYNOS_5250_HSICPHYCTRL1 0x10
	58	#define EXYNOS_5250_HSICPHYCTRL2 0x20
	59
	60	#define EXYNOS_5250_HSICPHYCTRLX_REFCLKSEL_MASK (0x3 << 23)
	61	#define EXYNOS_5250_HSICPHYCTRLX_REFCLKSEL_DEFAULT (0x2 << 23)
	62	#define EXYNOS_5250_HSICPHYCTRLX_REFCLKDIV_MASK (0x7f << 16)
	63	#define EXYNOS_5250_HSICPHYCTRLX_REFCLKDIV_12 (0x24 << 16)
	64	#define EXYNOS_5250_HSICPHYCTRLX_REFCLKDIV_15 (0x1c << 16)
65	#define EXYNOS_5250_HSICPHYCTRLX_REFCLKDIV_16 (0x1a << 16)
66	#define EXYNOS_5250_HSICPHYCTRLX_REFCLKDIV_19_2 (0x15 << 16)
67	#define EXYNOS_5250_HSICPHYCTRLX_REFCLKDIV_20 (0x14 << 16)
68	#define EXYNOS_5250_HSICPHYCTRLX_SIDDQ BIT(6)
69	#define EXYNOS_5250_HSICPHYCTRLX_FORCESLEEP BIT(5)
70	#define EXYNOS_5250_HSICPHYCTRLX_FORCESUSPEND BIT(4)
71	#define EXYNOS_5250_HSICPHYCTRLX_WORDINTERFACE BIT(3)
72	#define EXYNOS_5250_HSICPHYCTRLX_UTMISWRST BIT(2)
73	#define EXYNOS_5250_HSICPHYCTRLX_PHYSWRST BIT(0)
74
75	/* EHCI control */
76	#define EXYNOS_5250_HOSTEHCICTRL 0x30
77	#define EXYNOS_5250_HOSTEHCICTRL_ENAINCRXALIGN BIT(29)
78	#define EXYNOS_5250_HOSTEHCICTRL_ENAINCR4 BIT(28)
79	#define EXYNOS_5250_HOSTEHCICTRL_ENAINCR8 BIT(27)
80	#define EXYNOS_5250_HOSTEHCICTRL_ENAINCR16 BIT(26)
81	#define EXYNOS_5250_HOSTEHCICTRL_AUTOPPDONOVRCUREN BIT(25)
82	#define EXYNOS_5250_HOSTEHCICTRL_FLADJVAL0_SHIFT 19
83	#define EXYNOS_5250_HOSTEHCICTRL_FLADJVAL0_MASK \
84	(0x3f << EXYNOS_5250_HOSTEHCICTRL_FLADJVAL0_SHIFT)
85	#define EXYNOS_5250_HOSTEHCICTRL_FLADJVAL1_SHIFT 13
86	#define EXYNOS_5250_HOSTEHCICTRL_FLADJVAL1_MASK \
87	(0x3f << EXYNOS_5250_HOSTEHCICTRL_FLADJVAL1_SHIFT)
88	#define EXYNOS_5250_HOSTEHCICTRL_FLADJVAL2_SHIFT 7
89	#define EXYNOS_5250_HOSTEHCICTRL_FLADJVAL0_MASK \
90	(0x3f << EXYNOS_5250_HOSTEHCICTRL_FLADJVAL0_SHIFT)
91	#define EXYNOS_5250_HOSTEHCICTRL_FLADJVALHOST_SHIFT 1
92	#define EXYNOS_5250_HOSTEHCICTRL_FLADJVALHOST_MASK \
93	(0x1 << EXYNOS_5250_HOSTEHCICTRL_FLADJVALHOST_SHIFT)
94	#define EXYNOS_5250_HOSTEHCICTRL_SIMULATIONMODE BIT(0)
95
96	/* OHCI control */
97	#define EXYNOS_5250_HOSTOHCICTRL 0x34
98	#define EXYNOS_5250_HOSTOHCICTRL_FRAMELENVAL_SHIFT 1
99	#define EXYNOS_5250_HOSTOHCICTRL_FRAMELENVAL_MASK \
100	(0x3ff << EXYNOS_5250_HOSTOHCICTRL_FRAMELENVAL_SHIFT)
101	#define EXYNOS_5250_HOSTOHCICTRL_FRAMELENVALEN BIT(0)
102
103	/* USBOTG */
104	#define EXYNOS_5250_USBOTGSYS 0x38
105	#define EXYNOS_5250_USBOTGSYS_PHYLINK_SW_RESET BIT(14)
106	#define EXYNOS_5250_USBOTGSYS_LINK_SW_RST_UOTG BIT(13)
107	#define EXYNOS_5250_USBOTGSYS_PHY_SW_RST BIT(12)
108	#define EXYNOS_5250_USBOTGSYS_REFCLKSEL_SHIFT 9
109	#define EXYNOS_5250_USBOTGSYS_REFCLKSEL_MASK \
110	(0x3 << EXYNOS_5250_USBOTGSYS_REFCLKSEL_SHIFT)
111	#define EXYNOS_5250_USBOTGSYS_ID_PULLUP BIT(8)
112	#define EXYNOS_5250_USBOTGSYS_COMMON_ON BIT(7)
113	#define EXYNOS_5250_USBOTGSYS_FSEL_SHIFT 4
114	#define EXYNOS_5250_USBOTGSYS_FSEL_MASK \
115	(0x3 << EXYNOS_5250_USBOTGSYS_FSEL_SHIFT)
116	#define EXYNOS_5250_USBOTGSYS_FORCE_SLEEP BIT(3)
117	#define EXYNOS_5250_USBOTGSYS_OTGDISABLE BIT(2)
118	#define EXYNOS_5250_USBOTGSYS_SIDDQ_UOTG BIT(1)
119	#define EXYNOS_5250_USBOTGSYS_FORCE_SUSPEND BIT(0)
120
121	/* Isolation, configured in the power management unit */
122	#define EXYNOS_5250_USB_ISOL_OTG_OFFSET 0x704
123	#define EXYNOS_5250_USB_ISOL_OTG BIT(0)
124	#define EXYNOS_5250_USB_ISOL_HOST_OFFSET 0x708
125	#define EXYNOS_5250_USB_ISOL_HOST BIT(0)
126
127	/* Mode swtich register */
128	#define EXYNOS_5250_MODE_SWITCH_OFFSET 0x230
129	#define EXYNOS_5250_MODE_SWITCH_MASK 1
130	#define EXYNOS_5250_MODE_SWITCH_DEVICE 0
131	#define EXYNOS_5250_MODE_SWITCH_HOST 1
132
133	enum exynos4x12_phy_id {
134	EXYNOS5250_DEVICE,
135	EXYNOS5250_HOST,
136	EXYNOS5250_HSIC0,
137	EXYNOS5250_HSIC1,
138	EXYNOS5250_NUM_PHYS,
139	};
140
141	/*
142	* exynos5250_rate_to_clk() converts the supplied clock rate to the value that
143	* can be written to the phy register.
144	*/
145	static int exynos5250_rate_to_clk(unsigned long rate, u32 *reg)
146	{
147	/* EXYNOS_5250_FSEL_MASK */
148
149	switch (rate) {
150	case 9600 * KHZ:
151	*reg = EXYNOS_5250_FSEL_9MHZ6;
152	break;
153	case 10 * MHZ:
154	*reg = EXYNOS_5250_FSEL_10MHZ;
155	break;
156	case 12 * MHZ:
157	*reg = EXYNOS_5250_FSEL_12MHZ;
158	break;
159	case 19200 * KHZ:
160	*reg = EXYNOS_5250_FSEL_19MHZ2;
161	break;
162	case 20 * MHZ:
163	*reg = EXYNOS_5250_FSEL_20MHZ;
164	break;
165	case 24 * MHZ:
166	*reg = EXYNOS_5250_FSEL_24MHZ;
167	break;
168	case 50 * MHZ:
169	*reg = EXYNOS_5250_FSEL_50MHZ;
170	break;
171	default:
172	return -EINVAL;
173	}
174
175	return 0;
176	}
177
178	static void exynos5250_isol(struct samsung_usb2_phy_instance *inst, bool on)
179	{
180	struct samsung_usb2_phy_driver *drv = inst->drv;
181	u32 offset;
182	u32 mask;
183
184	switch (inst->cfg->id) {
185	case EXYNOS5250_DEVICE:
186	offset = EXYNOS_5250_USB_ISOL_OTG_OFFSET;
187	mask = EXYNOS_5250_USB_ISOL_OTG;
188	break;
189	case EXYNOS5250_HOST:
190	offset = EXYNOS_5250_USB_ISOL_HOST_OFFSET;
191	mask = EXYNOS_5250_USB_ISOL_HOST;
192	break;
193	default:
194	return;
0e65ba28	195	}
64bf2b23 KD	196
	197	regmap_update_bits(drv->reg_pmu, offset, mask, on ? 0 : mask);
	198	}
	199
	200	static int exynos5250_power_on(struct samsung_usb2_phy_instance *inst)
	201	{
	202	struct samsung_usb2_phy_driver *drv = inst->drv;
	203	u32 ctrl0;
	204	u32 otg;
	205	u32 ehci;
	206	u32 ohci;
	207	u32 hsic;
	208
	209	switch (inst->cfg->id) {
	210	case EXYNOS5250_DEVICE:
	211	regmap_update_bits(drv->reg_sys,
	212	EXYNOS_5250_MODE_SWITCH_OFFSET,
	213	EXYNOS_5250_MODE_SWITCH_MASK,
	214	EXYNOS_5250_MODE_SWITCH_DEVICE);
	215
	216	/* OTG configuration */
	217	otg = readl(drv->reg_phy + EXYNOS_5250_USBOTGSYS);
	218	/* The clock */
	219	otg &= ~EXYNOS_5250_USBOTGSYS_FSEL_MASK;
	220	otg \|= drv->ref_reg_val << EXYNOS_5250_USBOTGSYS_FSEL_SHIFT;
	221	/* Reset */
	222	otg &= ~(EXYNOS_5250_USBOTGSYS_FORCE_SUSPEND \|
	223	EXYNOS_5250_USBOTGSYS_FORCE_SLEEP \|
	224	EXYNOS_5250_USBOTGSYS_SIDDQ_UOTG);
	225	otg \|= EXYNOS_5250_USBOTGSYS_PHY_SW_RST \|
	226	EXYNOS_5250_USBOTGSYS_PHYLINK_SW_RESET \|
	227	EXYNOS_5250_USBOTGSYS_LINK_SW_RST_UOTG \|
	228	EXYNOS_5250_USBOTGSYS_OTGDISABLE;
	229	/* Ref clock */
	230	otg &= ~EXYNOS_5250_USBOTGSYS_REFCLKSEL_MASK;
	231	otg \|= EXYNOS_5250_REFCLKSEL_CLKCORE <<
	232	EXYNOS_5250_USBOTGSYS_REFCLKSEL_SHIFT;
	233	writel(otg, drv->reg_phy + EXYNOS_5250_USBOTGSYS);
	234	udelay(100);
	235	otg &= ~(EXYNOS_5250_USBOTGSYS_PHY_SW_RST \|
	236	EXYNOS_5250_USBOTGSYS_LINK_SW_RST_UOTG \|
	237	EXYNOS_5250_USBOTGSYS_PHYLINK_SW_RESET \|
	238	EXYNOS_5250_USBOTGSYS_OTGDISABLE);
	239	writel(otg, drv->reg_phy + EXYNOS_5250_USBOTGSYS);
	240
	241
	242	break;
	243	case EXYNOS5250_HOST:
	244	case EXYNOS5250_HSIC0:
	245	case EXYNOS5250_HSIC1:
	246	/* Host registers configuration */
	247	ctrl0 = readl(drv->reg_phy + EXYNOS_5250_HOSTPHYCTRL0);
	248	/* The clock */
	249	ctrl0 &= ~EXYNOS_5250_HOSTPHYCTRL0_FSEL_MASK;
	250	ctrl0 \|= drv->ref_reg_val <<
	251	EXYNOS_5250_HOSTPHYCTRL0_FSEL_SHIFT;
	252
	253	/* Reset */
	254	ctrl0 &= ~(EXYNOS_5250_HOSTPHYCTRL0_PHYSWRST \|
	255	EXYNOS_5250_HOSTPHYCTRL0_PHYSWRSTALL \|
	256	EXYNOS_5250_HOSTPHYCTRL0_SIDDQ \|
	257	EXYNOS_5250_HOSTPHYCTRL0_FORCESUSPEND \|
	258	EXYNOS_5250_HOSTPHYCTRL0_FORCESLEEP);
	259	ctrl0 \|= EXYNOS_5250_HOSTPHYCTRL0_LINKSWRST \|
260	EXYNOS_5250_HOSTPHYCTRL0_UTMISWRST \|
261	EXYNOS_5250_HOSTPHYCTRL0_COMMON_ON_N;
262	writel(ctrl0, drv->reg_phy + EXYNOS_5250_HOSTPHYCTRL0);
263	udelay(10);
264	ctrl0 &= ~(EXYNOS_5250_HOSTPHYCTRL0_LINKSWRST \|
265	EXYNOS_5250_HOSTPHYCTRL0_UTMISWRST);
266	writel(ctrl0, drv->reg_phy + EXYNOS_5250_HOSTPHYCTRL0);
267
268	/* OTG configuration */
269	otg = readl(drv->reg_phy + EXYNOS_5250_USBOTGSYS);
270	/* The clock */
271	otg &= ~EXYNOS_5250_USBOTGSYS_FSEL_MASK;
272	otg \|= drv->ref_reg_val << EXYNOS_5250_USBOTGSYS_FSEL_SHIFT;
273	/* Reset */
274	otg &= ~(EXYNOS_5250_USBOTGSYS_FORCE_SUSPEND \|
275	EXYNOS_5250_USBOTGSYS_FORCE_SLEEP \|
276	EXYNOS_5250_USBOTGSYS_SIDDQ_UOTG);
277	otg \|= EXYNOS_5250_USBOTGSYS_PHY_SW_RST \|
278	EXYNOS_5250_USBOTGSYS_PHYLINK_SW_RESET \|
279	EXYNOS_5250_USBOTGSYS_LINK_SW_RST_UOTG \|
280	EXYNOS_5250_USBOTGSYS_OTGDISABLE;
281	/* Ref clock */
282	otg &= ~EXYNOS_5250_USBOTGSYS_REFCLKSEL_MASK;
283	otg \|= EXYNOS_5250_REFCLKSEL_CLKCORE <<
284	EXYNOS_5250_USBOTGSYS_REFCLKSEL_SHIFT;
285	writel(otg, drv->reg_phy + EXYNOS_5250_USBOTGSYS);
286	udelay(10);
287	otg &= ~(EXYNOS_5250_USBOTGSYS_PHY_SW_RST \|
288	EXYNOS_5250_USBOTGSYS_LINK_SW_RST_UOTG \|
289	EXYNOS_5250_USBOTGSYS_PHYLINK_SW_RESET);
290
291	/* HSIC phy configuration */
292	hsic = (EXYNOS_5250_HSICPHYCTRLX_REFCLKDIV_12 \|
293	EXYNOS_5250_HSICPHYCTRLX_REFCLKSEL_DEFAULT \|
294	EXYNOS_5250_HSICPHYCTRLX_PHYSWRST);
295	writel(hsic, drv->reg_phy + EXYNOS_5250_HSICPHYCTRL1);
296	writel(hsic, drv->reg_phy + EXYNOS_5250_HSICPHYCTRL2);
297	udelay(10);
298	hsic &= ~EXYNOS_5250_HSICPHYCTRLX_PHYSWRST;
299	writel(hsic, drv->reg_phy + EXYNOS_5250_HSICPHYCTRL1);
300	writel(hsic, drv->reg_phy + EXYNOS_5250_HSICPHYCTRL2);
301	/* The following delay is necessary for the reset sequence to be
302	* completed */
303	udelay(80);
304
305	/* Enable EHCI DMA burst */
306	ehci = readl(drv->reg_phy + EXYNOS_5250_HOSTEHCICTRL);
307	ehci \|= EXYNOS_5250_HOSTEHCICTRL_ENAINCRXALIGN \|
308	EXYNOS_5250_HOSTEHCICTRL_ENAINCR4 \|
309	EXYNOS_5250_HOSTEHCICTRL_ENAINCR8 \|
310	EXYNOS_5250_HOSTEHCICTRL_ENAINCR16;
311	writel(ehci, drv->reg_phy + EXYNOS_5250_HOSTEHCICTRL);
312
313	/* OHCI settings */
314	ohci = readl(drv->reg_phy + EXYNOS_5250_HOSTOHCICTRL);
315	/* Following code is based on the old driver */
316	ohci \|= 0x1 << 3;
317	writel(ohci, drv->reg_phy + EXYNOS_5250_HOSTOHCICTRL);
318
319	break;
320	}
64bf2b23 KD	321	exynos5250_isol(inst, 0);
	322
	323	return 0;
	324	}
	325
	326	static int exynos5250_power_off(struct samsung_usb2_phy_instance *inst)
	327	{
	328	struct samsung_usb2_phy_driver *drv = inst->drv;
	329	u32 ctrl0;
	330	u32 otg;
	331	u32 hsic;
	332
64bf2b23 KD	333	exynos5250_isol(inst, 1);
	334
	335	switch (inst->cfg->id) {
	336	case EXYNOS5250_DEVICE:
	337	otg = readl(drv->reg_phy + EXYNOS_5250_USBOTGSYS);
	338	otg \|= (EXYNOS_5250_USBOTGSYS_FORCE_SUSPEND \|
	339	EXYNOS_5250_USBOTGSYS_SIDDQ_UOTG \|
	340	EXYNOS_5250_USBOTGSYS_FORCE_SLEEP);
	341	writel(otg, drv->reg_phy + EXYNOS_5250_USBOTGSYS);
	342	break;
	343	case EXYNOS5250_HOST:
	344	ctrl0 = readl(drv->reg_phy + EXYNOS_5250_HOSTPHYCTRL0);
	345	ctrl0 \|= (EXYNOS_5250_HOSTPHYCTRL0_SIDDQ \|
	346	EXYNOS_5250_HOSTPHYCTRL0_FORCESUSPEND \|
	347	EXYNOS_5250_HOSTPHYCTRL0_FORCESLEEP \|
	348	EXYNOS_5250_HOSTPHYCTRL0_PHYSWRST \|
	349	EXYNOS_5250_HOSTPHYCTRL0_PHYSWRSTALL);
	350	writel(ctrl0, drv->reg_phy + EXYNOS_5250_HOSTPHYCTRL0);
	351	break;
	352	case EXYNOS5250_HSIC0:
	353	case EXYNOS5250_HSIC1:
	354	hsic = (EXYNOS_5250_HSICPHYCTRLX_REFCLKDIV_12 \|
	355	EXYNOS_5250_HSICPHYCTRLX_REFCLKSEL_DEFAULT \|
	356	EXYNOS_5250_HSICPHYCTRLX_SIDDQ \|
	357	EXYNOS_5250_HSICPHYCTRLX_FORCESLEEP \|
	358	EXYNOS_5250_HSICPHYCTRLX_FORCESUSPEND
	359	);
	360	writel(hsic, drv->reg_phy + EXYNOS_5250_HSICPHYCTRL1);
	361	writel(hsic, drv->reg_phy + EXYNOS_5250_HSICPHYCTRL2);
	362	break;
	363	}
	364
	365	return 0;
	366	}
	367
	368
	369	static const struct samsung_usb2_common_phy exynos5250_phys[] = {
	370	{
	371	.label = "device",
	372	.id = EXYNOS5250_DEVICE,
	373	.power_on = exynos5250_power_on,
	374	.power_off = exynos5250_power_off,
	375	},
	376	{
	377	.label = "host",
	378	.id = EXYNOS5250_HOST,
	379	.power_on = exynos5250_power_on,
	380	.power_off = exynos5250_power_off,
	381	},
	382	{
	383	.label = "hsic0",
	384	.id = EXYNOS5250_HSIC0,
	385	.power_on = exynos5250_power_on,
	386	.power_off = exynos5250_power_off,
	387	},
	388	{
	389	.label = "hsic1",
	390	.id = EXYNOS5250_HSIC1,
	391	.power_on = exynos5250_power_on,
	392	.power_off = exynos5250_power_off,
	393	},
64bf2b23 KD	394	};
	395
	396	const struct samsung_usb2_phy_config exynos5250_usb2_phy_config = {
	397	.has_mode_switch = 1,
	398	.num_phys = EXYNOS5250_NUM_PHYS,
	399	.phys = exynos5250_phys,
	400	.rate_to_clk = exynos5250_rate_to_clk,
	401	};