[mirror_ubuntu-eoan-kernel.git] / arch / arm / mach-omap1 / usb.c

/*
 * Platform level USB initialization for FS USB OTG controller on omap1
 *
 * Copyright (C) 2004 Texas Instruments, Inc.
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation; either version 2 of the License, or
 * (at your option) any later version.
 *
 * 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.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
 */

#include <linux/module.h>
#include <linux/kernel.h>
#include <linux/init.h>
#include <linux/platform_device.h>
#include <linux/io.h>

#include <asm/irq.h>

#include <mach/mux.h>

#include <mach/usb.h>

#include "common.h"

/* These routines should handle the standard chip-specific modes
 * for usb0/1/2 ports, covering basic mux and transceiver setup.
 *
 * Some board-*.c files will need to set up additional mux options,
 * like for suspend handling, vbus sensing, GPIOs, and the D+ pullup.
 */

/* TESTED ON:
 *  - 1611B H2 (with usb1 mini-AB) using standard Mini-B or OTG cables
 *  - 5912 OSK OHCI (with usb0 standard-A), standard A-to-B cables
 *  - 5912 OSK UDC, with *nonstandard* A-to-A cable
 *  - 1510 Innovator UDC with bundled usb0 cable
 *  - 1510 Innovator OHCI with bundled usb1/usb2 cable
 *  - 1510 Innovator OHCI with custom usb0 cable, feeding 5V VBUS
 *  - 1710 custom development board using alternate pin group
 *  - 1710 H3 (with usb1 mini-AB) using standard Mini-B or OTG cables
 */

#define INT_USB_IRQ_GEN		IH2_BASE + 20
#define INT_USB_IRQ_NISO	IH2_BASE + 30
#define INT_USB_IRQ_ISO		IH2_BASE + 29
#define INT_USB_IRQ_HGEN	INT_USB_HHC_1
#define INT_USB_IRQ_OTG		IH2_BASE + 8

#ifdef	CONFIG_ARCH_OMAP_OTG

static void __init
omap_otg_init(struct omap_usb_config *config)
{
	u32		syscon;
	int		alt_pingroup = 0;
	u16		w;

	/* NOTE:  no bus or clock setup (yet?) */

	syscon = omap_readl(OTG_SYSCON_1) & 0xffff;
	if (!(syscon & OTG_RESET_DONE))
		pr_debug("USB resets not complete?\n");

	//omap_writew(0, OTG_IRQ_EN);

	/* pin muxing and transceiver pinouts */
	if (config->pins[0] > 2)	/* alt pingroup 2 */
		alt_pingroup = 1;
	syscon |= config->usb0_init(config->pins[0], is_usb0_device(config));
	syscon |= config->usb1_init(config->pins[1]);
	syscon |= config->usb2_init(config->pins[2], alt_pingroup);
	pr_debug("OTG_SYSCON_1 = %08x\n", omap_readl(OTG_SYSCON_1));
	omap_writel(syscon, OTG_SYSCON_1);

	syscon = config->hmc_mode;
	syscon |= USBX_SYNCHRO | (4 << 16) /* B_ASE0_BRST */;
#ifdef	CONFIG_USB_OTG
	if (config->otg)
		syscon |= OTG_EN;
#endif
	pr_debug("USB_TRANSCEIVER_CTRL = %03x\n",
		 omap_readl(USB_TRANSCEIVER_CTRL));
	pr_debug("OTG_SYSCON_2 = %08x\n", omap_readl(OTG_SYSCON_2));
	omap_writel(syscon, OTG_SYSCON_2);

	printk("USB: hmc %d", config->hmc_mode);
	if (!alt_pingroup)
		pr_cont(", usb2 alt %d wires", config->pins[2]);
	else if (config->pins[0])
		pr_cont(", usb0 %d wires%s", config->pins[0],
			is_usb0_device(config) ? " (dev)" : "");
	if (config->pins[1])
		pr_cont(", usb1 %d wires", config->pins[1]);
	if (!alt_pingroup && config->pins[2])
		pr_cont(", usb2 %d wires", config->pins[2]);
	if (config->otg)
		pr_cont(", Mini-AB on usb%d", config->otg - 1);
	pr_cont("\n");

	/* leave USB clocks/controllers off until needed */
	w = omap_readw(ULPD_SOFT_REQ);
	w &= ~SOFT_USB_CLK_REQ;
	omap_writew(w, ULPD_SOFT_REQ);

	w = omap_readw(ULPD_CLOCK_CTRL);
	w &= ~USB_MCLK_EN;
	w |= DIS_USB_PVCI_CLK;
	omap_writew(w, ULPD_CLOCK_CTRL);

	syscon = omap_readl(OTG_SYSCON_1);
	syscon |= HST_IDLE_EN|DEV_IDLE_EN|OTG_IDLE_EN;

#if IS_ENABLED(CONFIG_USB_OMAP)
	if (config->otg || config->register_dev) {
		struct platform_device *udc_device = config->udc_device;
		int status;

		syscon &= ~DEV_IDLE_EN;
		udc_device->dev.platform_data = config;
		status = platform_device_register(udc_device);
		if (status)
			pr_debug("can't register UDC device, %d\n", status);
	}
#endif

#if	IS_ENABLED(CONFIG_USB_OHCI_HCD)
	if (config->otg || config->register_host) {
		struct platform_device *ohci_device = config->ohci_device;
		int status;

		syscon &= ~HST_IDLE_EN;
		ohci_device->dev.platform_data = config;
		status = platform_device_register(ohci_device);
		if (status)
			pr_debug("can't register OHCI device, %d\n", status);
	}
#endif

#ifdef	CONFIG_USB_OTG
	if (config->otg) {
		struct platform_device *otg_device = config->otg_device;
		int status;

		syscon &= ~OTG_IDLE_EN;
		otg_device->dev.platform_data = config;
		status = platform_device_register(otg_device);
		if (status)
			pr_debug("can't register OTG device, %d\n", status);
	}
#endif
	pr_debug("OTG_SYSCON_1 = %08x\n", omap_readl(OTG_SYSCON_1));
	omap_writel(syscon, OTG_SYSCON_1);
}

#else
static void omap_otg_init(struct omap_usb_config *config) {}
#endif

#if IS_ENABLED(CONFIG_USB_OMAP)

static struct resource udc_resources[] = {
	/* order is significant! */
	{		/* registers */
		.start		= UDC_BASE,
		.end		= UDC_BASE + 0xff,
		.flags		= IORESOURCE_MEM,
	}, {		/* general IRQ */
		.start		= INT_USB_IRQ_GEN,
		.flags		= IORESOURCE_IRQ,
	}, {		/* PIO IRQ */
		.start		= INT_USB_IRQ_NISO,
		.flags		= IORESOURCE_IRQ,
	}, {		/* SOF IRQ */
		.start		= INT_USB_IRQ_ISO,
		.flags		= IORESOURCE_IRQ,
	},
};

static u64 udc_dmamask = ~(u32)0;

static struct platform_device udc_device = {
	.name		= "omap_udc",
	.id		= -1,
	.dev = {
		.dma_mask		= &udc_dmamask,
		.coherent_dma_mask	= 0xffffffff,
	},
	.num_resources	= ARRAY_SIZE(udc_resources),
	.resource	= udc_resources,
};

static inline void udc_device_init(struct omap_usb_config *pdata)
{
	/* IRQ numbers for omap7xx */
	if(cpu_is_omap7xx()) {
		udc_resources[1].start = INT_7XX_USB_GENI;
		udc_resources[2].start = INT_7XX_USB_NON_ISO;
		udc_resources[3].start = INT_7XX_USB_ISO;
	}
	pdata->udc_device = &udc_device;
}

#else

static inline void udc_device_init(struct omap_usb_config *pdata)
{
}

#endif

#if	IS_ENABLED(CONFIG_USB_OHCI_HCD)

/* The dmamask must be set for OHCI to work */
static u64 ohci_dmamask = ~(u32)0;

static struct resource ohci_resources[] = {
	{
		.start	= OMAP_OHCI_BASE,
		.end	= OMAP_OHCI_BASE + 0xff,
		.flags	= IORESOURCE_MEM,
	},
	{
		.start	= INT_USB_IRQ_HGEN,
		.flags	= IORESOURCE_IRQ,
	},
};

static struct platform_device ohci_device = {
	.name			= "ohci",
	.id			= -1,
	.dev = {
		.dma_mask		= &ohci_dmamask,
		.coherent_dma_mask	= 0xffffffff,
	},
	.num_resources	= ARRAY_SIZE(ohci_resources),
	.resource		= ohci_resources,
};

static inline void ohci_device_init(struct omap_usb_config *pdata)
{
	if (cpu_is_omap7xx())
		ohci_resources[1].start = INT_7XX_USB_HHC_1;
	pdata->ohci_device = &ohci_device;
	pdata->ocpi_enable = &ocpi_enable;
}

#else

static inline void ohci_device_init(struct omap_usb_config *pdata)
{
}

#endif

#if	defined(CONFIG_USB_OTG) && defined(CONFIG_ARCH_OMAP_OTG)

static struct resource otg_resources[] = {
	/* order is significant! */
	{
		.start		= OTG_BASE,
		.end		= OTG_BASE + 0xff,
		.flags		= IORESOURCE_MEM,
	}, {
		.start		= INT_USB_IRQ_OTG,
		.flags		= IORESOURCE_IRQ,
	},
};

static struct platform_device otg_device = {
	.name		= "omap_otg",
	.id		= -1,
	.num_resources	= ARRAY_SIZE(otg_resources),
	.resource	= otg_resources,
};

static inline void otg_device_init(struct omap_usb_config *pdata)
{
	if (cpu_is_omap7xx())
		otg_resources[1].start = INT_7XX_USB_OTG;
	pdata->otg_device = &otg_device;
}

#else

static inline void otg_device_init(struct omap_usb_config *pdata)
{
}

#endif

static u32 __init omap1_usb0_init(unsigned nwires, unsigned is_device)
{
	u32	syscon1 = 0;

	if (nwires == 0) {
		if (!cpu_is_omap15xx()) {
			u32 l;

			/* pulldown D+/D- */
			l = omap_readl(USB_TRANSCEIVER_CTRL);
			l &= ~(3 << 1);
			omap_writel(l, USB_TRANSCEIVER_CTRL);
		}
		return 0;
	}

	if (is_device) {
		if (cpu_is_omap7xx()) {
			omap_cfg_reg(AA17_7XX_USB_DM);
			omap_cfg_reg(W16_7XX_USB_PU_EN);
			omap_cfg_reg(W17_7XX_USB_VBUSI);
			omap_cfg_reg(W18_7XX_USB_DMCK_OUT);
			omap_cfg_reg(W19_7XX_USB_DCRST);
		} else
			omap_cfg_reg(W4_USB_PUEN);
	}

	if (nwires == 2) {
		u32 l;

		// omap_cfg_reg(P9_USB_DP);
		// omap_cfg_reg(R8_USB_DM);

		if (cpu_is_omap15xx()) {
			/* This works on 1510-Innovator */
			return 0;
		}

		/* NOTES:
		 *  - peripheral should configure VBUS detection!
		 *  - only peripherals may use the internal D+/D- pulldowns
		 *  - OTG support on this port not yet written
		 */

		/* Don't do this for omap7xx -- it causes USB to not work correctly */
		if (!cpu_is_omap7xx()) {
			l = omap_readl(USB_TRANSCEIVER_CTRL);
			l &= ~(7 << 4);
			if (!is_device)
				l |= (3 << 1);
			omap_writel(l, USB_TRANSCEIVER_CTRL);
		}

		return 3 << 16;
	}

	/* alternate pin config, external transceiver */
	if (cpu_is_omap15xx()) {
		printk(KERN_ERR "no usb0 alt pin config on 15xx\n");
		return 0;
	}

	omap_cfg_reg(V6_USB0_TXD);
	omap_cfg_reg(W9_USB0_TXEN);
	omap_cfg_reg(W5_USB0_SE0);
	if (nwires != 3)
		omap_cfg_reg(Y5_USB0_RCV);

	/* NOTE:  SPEED and SUSP aren't configured here.  OTG hosts
	 * may be able to use I2C requests to set those bits along
	 * with VBUS switching and overcurrent detection.
	 */

	if (nwires != 6) {
		u32 l;

		l = omap_readl(USB_TRANSCEIVER_CTRL);
		l &= ~CONF_USB2_UNI_R;
		omap_writel(l, USB_TRANSCEIVER_CTRL);
	}

	switch (nwires) {
	case 3:
		syscon1 = 2;
		break;
	case 4:
		syscon1 = 1;
		break;
	case 6:
		syscon1 = 3;
		{
			u32 l;

			omap_cfg_reg(AA9_USB0_VP);
			omap_cfg_reg(R9_USB0_VM);
			l = omap_readl(USB_TRANSCEIVER_CTRL);
			l |= CONF_USB2_UNI_R;
			omap_writel(l, USB_TRANSCEIVER_CTRL);
		}
		break;
	default:
		printk(KERN_ERR "illegal usb%d %d-wire transceiver\n",
			0, nwires);
	}

	return syscon1 << 16;
}

static u32 __init omap1_usb1_init(unsigned nwires)
{
	u32	syscon1 = 0;

	if (!cpu_is_omap15xx() && nwires != 6) {
		u32 l;

		l = omap_readl(USB_TRANSCEIVER_CTRL);
		l &= ~CONF_USB1_UNI_R;
		omap_writel(l, USB_TRANSCEIVER_CTRL);
	}
	if (nwires == 0)
		return 0;

	/* external transceiver */
	omap_cfg_reg(USB1_TXD);
	omap_cfg_reg(USB1_TXEN);
	if (nwires != 3)
		omap_cfg_reg(USB1_RCV);

	if (cpu_is_omap15xx()) {
		omap_cfg_reg(USB1_SEO);
		omap_cfg_reg(USB1_SPEED);
		// SUSP
	} else if (cpu_is_omap1610() || cpu_is_omap5912()) {
		omap_cfg_reg(W13_1610_USB1_SE0);
		omap_cfg_reg(R13_1610_USB1_SPEED);
		// SUSP
	} else if (cpu_is_omap1710()) {
		omap_cfg_reg(R13_1710_USB1_SE0);
		// SUSP
	} else {
		pr_debug("usb%d cpu unrecognized\n", 1);
		return 0;
	}

	switch (nwires) {
	case 2:
		goto bad;
	case 3:
		syscon1 = 2;
		break;
	case 4:
		syscon1 = 1;
		break;
	case 6:
		syscon1 = 3;
		omap_cfg_reg(USB1_VP);
		omap_cfg_reg(USB1_VM);
		if (!cpu_is_omap15xx()) {
			u32 l;

			l = omap_readl(USB_TRANSCEIVER_CTRL);
			l |= CONF_USB1_UNI_R;
			omap_writel(l, USB_TRANSCEIVER_CTRL);
		}
		break;
	default:
bad:
		printk(KERN_ERR "illegal usb%d %d-wire transceiver\n",
			1, nwires);
	}

	return syscon1 << 20;
}

static u32 __init omap1_usb2_init(unsigned nwires, unsigned alt_pingroup)
{
	u32	syscon1 = 0;

	/* NOTE omap1 erratum: must leave USB2_UNI_R set if usb0 in use */
	if (alt_pingroup || nwires == 0)
		return 0;

	if (!cpu_is_omap15xx() && nwires != 6) {
		u32 l;

		l = omap_readl(USB_TRANSCEIVER_CTRL);
		l &= ~CONF_USB2_UNI_R;
		omap_writel(l, USB_TRANSCEIVER_CTRL);
	}

	/* external transceiver */
	if (cpu_is_omap15xx()) {
		omap_cfg_reg(USB2_TXD);
		omap_cfg_reg(USB2_TXEN);
		omap_cfg_reg(USB2_SEO);
		if (nwires != 3)
			omap_cfg_reg(USB2_RCV);
		/* there is no USB2_SPEED */
	} else if (cpu_is_omap16xx()) {
		omap_cfg_reg(V6_USB2_TXD);
		omap_cfg_reg(W9_USB2_TXEN);
		omap_cfg_reg(W5_USB2_SE0);
		if (nwires != 3)
			omap_cfg_reg(Y5_USB2_RCV);
		// FIXME omap_cfg_reg(USB2_SPEED);
	} else {
		pr_debug("usb%d cpu unrecognized\n", 1);
		return 0;
	}

	// omap_cfg_reg(USB2_SUSP);

	switch (nwires) {
	case 2:
		goto bad;
	case 3:
		syscon1 = 2;
		break;
	case 4:
		syscon1 = 1;
		break;
	case 5:
		goto bad;
	case 6:
		syscon1 = 3;
		if (cpu_is_omap15xx()) {
			omap_cfg_reg(USB2_VP);
			omap_cfg_reg(USB2_VM);
		} else {
			u32 l;

			omap_cfg_reg(AA9_USB2_VP);
			omap_cfg_reg(R9_USB2_VM);
			l = omap_readl(USB_TRANSCEIVER_CTRL);
			l |= CONF_USB2_UNI_R;
			omap_writel(l, USB_TRANSCEIVER_CTRL);
		}
		break;
	default:
bad:
		printk(KERN_ERR "illegal usb%d %d-wire transceiver\n",
			2, nwires);
	}

	return syscon1 << 24;
}

#ifdef	CONFIG_ARCH_OMAP15XX

/* ULPD_DPLL_CTRL */
#define DPLL_IOB		(1 << 13)
#define DPLL_PLL_ENABLE		(1 << 4)
#define DPLL_LOCK		(1 << 0)

/* ULPD_APLL_CTRL */
#define APLL_NDPLL_SWITCH	(1 << 0)

static void __init omap_1510_usb_init(struct omap_usb_config *config)
{
	unsigned int val;
	u16 w;

	config->usb0_init(config->pins[0], is_usb0_device(config));
	config->usb1_init(config->pins[1]);
	config->usb2_init(config->pins[2], 0);

	val = omap_readl(MOD_CONF_CTRL_0) & ~(0x3f << 1);
	val |= (config->hmc_mode << 1);
	omap_writel(val, MOD_CONF_CTRL_0);

	printk("USB: hmc %d", config->hmc_mode);
	if (config->pins[0])
		pr_cont(", usb0 %d wires%s", config->pins[0],
			is_usb0_device(config) ? " (dev)" : "");
	if (config->pins[1])
		pr_cont(", usb1 %d wires", config->pins[1]);
	if (config->pins[2])
		pr_cont(", usb2 %d wires", config->pins[2]);
	pr_cont("\n");

	/* use DPLL for 48 MHz function clock */
	pr_debug("APLL %04x DPLL %04x REQ %04x\n", omap_readw(ULPD_APLL_CTRL),
			omap_readw(ULPD_DPLL_CTRL), omap_readw(ULPD_SOFT_REQ));

	w = omap_readw(ULPD_APLL_CTRL);
	w &= ~APLL_NDPLL_SWITCH;
	omap_writew(w, ULPD_APLL_CTRL);

	w = omap_readw(ULPD_DPLL_CTRL);
	w |= DPLL_IOB | DPLL_PLL_ENABLE;
	omap_writew(w, ULPD_DPLL_CTRL);

	w = omap_readw(ULPD_SOFT_REQ);
	w |= SOFT_UDC_REQ | SOFT_DPLL_REQ;
	omap_writew(w, ULPD_SOFT_REQ);

	while (!(omap_readw(ULPD_DPLL_CTRL) & DPLL_LOCK))
		cpu_relax();

#if IS_ENABLED(CONFIG_USB_OMAP)
	if (config->register_dev) {
		int status;

		udc_device.dev.platform_data = config;
		status = platform_device_register(&udc_device);
		if (status)
			pr_debug("can't register UDC device, %d\n", status);
		/* udc driver gates 48MHz by D+ pullup */
	}
#endif

#if	IS_ENABLED(CONFIG_USB_OHCI_HCD)
	if (config->register_host) {
		int status;

		ohci_device.dev.platform_data = config;
		status = platform_device_register(&ohci_device);
		if (status)
			pr_debug("can't register OHCI device, %d\n", status);
		/* hcd explicitly gates 48MHz */
	}
#endif
}

#else
static inline void omap_1510_usb_init(struct omap_usb_config *config) {}
#endif

void __init omap1_usb_init(struct omap_usb_config *_pdata)
{
	struct omap_usb_config *pdata;

	pdata = kmemdup(_pdata, sizeof(*pdata), GFP_KERNEL);
	if (!pdata)
		return;

	pdata->usb0_init = omap1_usb0_init;
	pdata->usb1_init = omap1_usb1_init;
	pdata->usb2_init = omap1_usb2_init;
	udc_device_init(pdata);
	ohci_device_init(pdata);
	otg_device_init(pdata);

	if (cpu_is_omap7xx() || cpu_is_omap16xx())
		omap_otg_init(pdata);
	else if (cpu_is_omap15xx())
		omap_1510_usb_init(pdata);
	else
		printk(KERN_ERR "USB: No init for your chip yet\n");
}
Commit	Line	Data
dd0cdd88	1	/*
4d94b4a2	2	* Platform level USB initialization for FS USB OTG controller on omap1
dd0cdd88 TL	3	*
	4	* Copyright (C) 2004 Texas Instruments, Inc.
	5	*
	6	* This program is free software; you can redistribute it and/or modify
	7	* it under the terms of the GNU General Public License as published by
	8	* the Free Software Foundation; either version 2 of the License, or
	9	* (at your option) any later version.
	10	*
	11	* This program is distributed in the hope that it will be useful,
	12	* but WITHOUT ANY WARRANTY; without even the implied warranty of
	13	* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
	14	* GNU General Public License for more details.
	15	*
	16	* You should have received a copy of the GNU General Public License
	17	* along with this program; if not, write to the Free Software
	18	* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
	19	*/
	20
	21	#include <linux/module.h>
	22	#include <linux/kernel.h>
	23	#include <linux/init.h>
	24	#include <linux/platform_device.h>
	25	#include <linux/io.h>
	26
	27	#include <asm/irq.h>
	28
70c494c3	29	#include <mach/mux.h>
b924b204 TL	30
b924b204 TL	31	#include <mach/usb.h>
dd0cdd88	32
d3645d39 PW	33	#include "common.h"
d3645d39 PW	34
dd0cdd88 TL	35	/* These routines should handle the standard chip-specific modes
	36	* for usb0/1/2 ports, covering basic mux and transceiver setup.
	37	*
	38	* Some board-*.c files will need to set up additional mux options,
	39	* like for suspend handling, vbus sensing, GPIOs, and the D+ pullup.
	40	*/
	41
	42	/* TESTED ON:
	43	* - 1611B H2 (with usb1 mini-AB) using standard Mini-B or OTG cables
	44	* - 5912 OSK OHCI (with usb0 standard-A), standard A-to-B cables
	45	* - 5912 OSK UDC, with nonstandard A-to-A cable
	46	* - 1510 Innovator UDC with bundled usb0 cable
	47	* - 1510 Innovator OHCI with bundled usb1/usb2 cable
	48	* - 1510 Innovator OHCI with custom usb0 cable, feeding 5V VBUS
	49	* - 1710 custom development board using alternate pin group
	50	* - 1710 H3 (with usb1 mini-AB) using standard Mini-B or OTG cables
	51	*/
	52
	53	#define INT_USB_IRQ_GEN IH2_BASE + 20
	54	#define INT_USB_IRQ_NISO IH2_BASE + 30
	55	#define INT_USB_IRQ_ISO IH2_BASE + 29
	56	#define INT_USB_IRQ_HGEN INT_USB_HHC_1
	57	#define INT_USB_IRQ_OTG IH2_BASE + 8
	58
b924b204 TL	59	#ifdef CONFIG_ARCH_OMAP_OTG
b924b204 TL	60
bde49e59	61	static void __init
b924b204 TL	62	omap_otg_init(struct omap_usb_config *config)
	63	{
	64	u32 syscon;
	65	int alt_pingroup = 0;
4d94b4a2	66	u16 w;
b924b204 TL	67
	68	/* NOTE: no bus or clock setup (yet?) */
	69
	70	syscon = omap_readl(OTG_SYSCON_1) & 0xffff;
	71	if (!(syscon & OTG_RESET_DONE))
	72	pr_debug("USB resets not complete?\n");
	73
	74	//omap_writew(0, OTG_IRQ_EN);
	75
	76	/* pin muxing and transceiver pinouts */
	77	if (config->pins[0] > 2) /* alt pingroup 2 */
	78	alt_pingroup = 1;
	79	syscon \|= config->usb0_init(config->pins[0], is_usb0_device(config));
	80	syscon \|= config->usb1_init(config->pins[1]);
	81	syscon \|= config->usb2_init(config->pins[2], alt_pingroup);
	82	pr_debug("OTG_SYSCON_1 = %08x\n", omap_readl(OTG_SYSCON_1));
	83	omap_writel(syscon, OTG_SYSCON_1);
	84
	85	syscon = config->hmc_mode;
	86	syscon \|= USBX_SYNCHRO \| (4 << 16) /* B_ASE0_BRST */;
	87	#ifdef CONFIG_USB_OTG
	88	if (config->otg)
	89	syscon \|= OTG_EN;
	90	#endif
4d94b4a2 AK	91	pr_debug("USB_TRANSCEIVER_CTRL = %03x\n",
4d94b4a2 AK	92	omap_readl(USB_TRANSCEIVER_CTRL));
b924b204 TL	93	pr_debug("OTG_SYSCON_2 = %08x\n", omap_readl(OTG_SYSCON_2));
	94	omap_writel(syscon, OTG_SYSCON_2);
	95
	96	printk("USB: hmc %d", config->hmc_mode);
	97	if (!alt_pingroup)
7e600cad	98	pr_cont(", usb2 alt %d wires", config->pins[2]);
b924b204	99	else if (config->pins[0])
7e600cad	100	pr_cont(", usb0 %d wires%s", config->pins[0],
b924b204 TL	101	is_usb0_device(config) ? " (dev)" : "");
b924b204 TL	102	if (config->pins[1])
7e600cad	103	pr_cont(", usb1 %d wires", config->pins[1]);
b924b204	104	if (!alt_pingroup && config->pins[2])
7e600cad	105	pr_cont(", usb2 %d wires", config->pins[2]);
b924b204	106	if (config->otg)
7e600cad AK	107	pr_cont(", Mini-AB on usb%d", config->otg - 1);
7e600cad AK	108	pr_cont("\n");
b924b204	109
4d94b4a2 AK	110	/* leave USB clocks/controllers off until needed */
	111	w = omap_readw(ULPD_SOFT_REQ);
	112	w &= ~SOFT_USB_CLK_REQ;
	113	omap_writew(w, ULPD_SOFT_REQ);
b924b204	114
4d94b4a2 AK	115	w = omap_readw(ULPD_CLOCK_CTRL);
	116	w &= ~USB_MCLK_EN;
	117	w \|= DIS_USB_PVCI_CLK;
	118	omap_writew(w, ULPD_CLOCK_CTRL);
b924b204	119
b924b204 TL	120	syscon = omap_readl(OTG_SYSCON_1);
	121	syscon \|= HST_IDLE_EN\|DEV_IDLE_EN\|OTG_IDLE_EN;
	122
0345a1e3	123	#if IS_ENABLED(CONFIG_USB_OMAP)
b924b204 TL	124	if (config->otg \|\| config->register_dev) {
	125	struct platform_device *udc_device = config->udc_device;
	126	int status;
	127
	128	syscon &= ~DEV_IDLE_EN;
	129	udc_device->dev.platform_data = config;
	130	status = platform_device_register(udc_device);
	131	if (status)
	132	pr_debug("can't register UDC device, %d\n", status);
	133	}
	134	#endif
	135
fcebddb9	136	#if IS_ENABLED(CONFIG_USB_OHCI_HCD)
b924b204 TL	137	if (config->otg \|\| config->register_host) {
	138	struct platform_device *ohci_device = config->ohci_device;
	139	int status;
	140
	141	syscon &= ~HST_IDLE_EN;
	142	ohci_device->dev.platform_data = config;
	143	status = platform_device_register(ohci_device);
	144	if (status)
	145	pr_debug("can't register OHCI device, %d\n", status);
	146	}
	147	#endif
	148
	149	#ifdef CONFIG_USB_OTG
	150	if (config->otg) {
	151	struct platform_device *otg_device = config->otg_device;
	152	int status;
	153
	154	syscon &= ~OTG_IDLE_EN;
	155	otg_device->dev.platform_data = config;
	156	status = platform_device_register(otg_device);
	157	if (status)
	158	pr_debug("can't register OTG device, %d\n", status);
	159	}
	160	#endif
	161	pr_debug("OTG_SYSCON_1 = %08x\n", omap_readl(OTG_SYSCON_1));
	162	omap_writel(syscon, OTG_SYSCON_1);
	163	}
	164
	165	#else
bde49e59	166	static void omap_otg_init(struct omap_usb_config *config) {}
b924b204 TL	167	#endif
b924b204 TL	168
0345a1e3	169	#if IS_ENABLED(CONFIG_USB_OMAP)
dd0cdd88 TL	170
	171	static struct resource udc_resources[] = {
	172	/* order is significant! */
	173	{ /* registers */
	174	.start = UDC_BASE,
	175	.end = UDC_BASE + 0xff,
	176	.flags = IORESOURCE_MEM,
	177	}, { /* general IRQ */
	178	.start = INT_USB_IRQ_GEN,
	179	.flags = IORESOURCE_IRQ,
	180	}, { /* PIO IRQ */
	181	.start = INT_USB_IRQ_NISO,
	182	.flags = IORESOURCE_IRQ,
	183	}, { /* SOF IRQ */
	184	.start = INT_USB_IRQ_ISO,
	185	.flags = IORESOURCE_IRQ,
	186	},
	187	};
	188
	189	static u64 udc_dmamask = ~(u32)0;
	190
	191	static struct platform_device udc_device = {
	192	.name = "omap_udc",
	193	.id = -1,
	194	.dev = {
	195	.dma_mask = &udc_dmamask,
	196	.coherent_dma_mask = 0xffffffff,
	197	},
	198	.num_resources = ARRAY_SIZE(udc_resources),
	199	.resource = udc_resources,
	200	};
	201
	202	static inline void udc_device_init(struct omap_usb_config *pdata)
	203	{
	204	/* IRQ numbers for omap7xx */
	205	if(cpu_is_omap7xx()) {
	206	udc_resources[1].start = INT_7XX_USB_GENI;
	207	udc_resources[2].start = INT_7XX_USB_NON_ISO;
	208	udc_resources[3].start = INT_7XX_USB_ISO;
	209	}
	210	pdata->udc_device = &udc_device;
	211	}
	212
	213	#else
	214
	215	static inline void udc_device_init(struct omap_usb_config *pdata)
	216	{
	217	}
	218
	219	#endif
	220
fcebddb9	221	#if IS_ENABLED(CONFIG_USB_OHCI_HCD)
dd0cdd88 TL	222
	223	/* The dmamask must be set for OHCI to work */
	224	static u64 ohci_dmamask = ~(u32)0;
	225
	226	static struct resource ohci_resources[] = {
	227	{
	228	.start = OMAP_OHCI_BASE,
	229	.end = OMAP_OHCI_BASE + 0xff,
	230	.flags = IORESOURCE_MEM,
	231	},
	232	{
	233	.start = INT_USB_IRQ_HGEN,
	234	.flags = IORESOURCE_IRQ,
	235	},
	236	};
	237
	238	static struct platform_device ohci_device = {
	239	.name = "ohci",
	240	.id = -1,
	241	.dev = {
	242	.dma_mask = &ohci_dmamask,
	243	.coherent_dma_mask = 0xffffffff,
	244	},
	245	.num_resources = ARRAY_SIZE(ohci_resources),
	246	.resource = ohci_resources,
	247	};
	248
	249	static inline void ohci_device_init(struct omap_usb_config *pdata)
	250	{
	251	if (cpu_is_omap7xx())
	252	ohci_resources[1].start = INT_7XX_USB_HHC_1;
	253	pdata->ohci_device = &ohci_device;
d3645d39	254	pdata->ocpi_enable = &ocpi_enable;
dd0cdd88 TL	255	}
	256
	257	#else
	258
	259	static inline void ohci_device_init(struct omap_usb_config *pdata)
	260	{
	261	}
	262
	263	#endif
	264
	265	#if defined(CONFIG_USB_OTG) && defined(CONFIG_ARCH_OMAP_OTG)
	266
	267	static struct resource otg_resources[] = {
	268	/* order is significant! */
	269	{
	270	.start = OTG_BASE,
	271	.end = OTG_BASE + 0xff,
	272	.flags = IORESOURCE_MEM,
	273	}, {
	274	.start = INT_USB_IRQ_OTG,
	275	.flags = IORESOURCE_IRQ,
	276	},
	277	};
	278
	279	static struct platform_device otg_device = {
	280	.name = "omap_otg",
	281	.id = -1,
	282	.num_resources = ARRAY_SIZE(otg_resources),
	283	.resource = otg_resources,
	284	};
	285
	286	static inline void otg_device_init(struct omap_usb_config *pdata)
	287	{
	288	if (cpu_is_omap7xx())
	289	otg_resources[1].start = INT_7XX_USB_OTG;
	290	pdata->otg_device = &otg_device;
	291	}
	292
	293	#else
	294
	295	static inline void otg_device_init(struct omap_usb_config *pdata)
	296	{
	297	}
	298
	299	#endif
	300
eba36d77	301	static u32 __init omap1_usb0_init(unsigned nwires, unsigned is_device)
dd0cdd88 TL	302	{
	303	u32 syscon1 = 0;
	304
	305	if (nwires == 0) {
	306	if (!cpu_is_omap15xx()) {
	307	u32 l;
	308
	309	/* pulldown D+/D- */
	310	l = omap_readl(USB_TRANSCEIVER_CTRL);
	311	l &= ~(3 << 1);
	312	omap_writel(l, USB_TRANSCEIVER_CTRL);
	313	}
	314	return 0;
	315	}
	316
	317	if (is_device) {
	318	if (cpu_is_omap7xx()) {
	319	omap_cfg_reg(AA17_7XX_USB_DM);
	320	omap_cfg_reg(W16_7XX_USB_PU_EN);
	321	omap_cfg_reg(W17_7XX_USB_VBUSI);
	322	omap_cfg_reg(W18_7XX_USB_DMCK_OUT);
	323	omap_cfg_reg(W19_7XX_USB_DCRST);
	324	} else
	325	omap_cfg_reg(W4_USB_PUEN);
	326	}
	327
	328	if (nwires == 2) {
	329	u32 l;
	330
	331	// omap_cfg_reg(P9_USB_DP);
	332	// omap_cfg_reg(R8_USB_DM);
	333
	334	if (cpu_is_omap15xx()) {
	335	/* This works on 1510-Innovator */
	336	return 0;
	337	}
	338
	339	/* NOTES:
	340	* - peripheral should configure VBUS detection!
	341	* - only peripherals may use the internal D+/D- pulldowns
	342	* - OTG support on this port not yet written
	343	*/
	344
	345	/* Don't do this for omap7xx -- it causes USB to not work correctly */
	346	if (!cpu_is_omap7xx()) {
	347	l = omap_readl(USB_TRANSCEIVER_CTRL);
	348	l &= ~(7 << 4);
	349	if (!is_device)
	350	l \|= (3 << 1);
	351	omap_writel(l, USB_TRANSCEIVER_CTRL);
	352	}
	353
	354	return 3 << 16;
	355	}
	356
	357	/* alternate pin config, external transceiver */
	358	if (cpu_is_omap15xx()) {
	359	printk(KERN_ERR "no usb0 alt pin config on 15xx\n");
	360	return 0;
	361	}
	362
	363	omap_cfg_reg(V6_USB0_TXD);
	364	omap_cfg_reg(W9_USB0_TXEN);
	365	omap_cfg_reg(W5_USB0_SE0);
366	if (nwires != 3)
367	omap_cfg_reg(Y5_USB0_RCV);
368
369	/* NOTE: SPEED and SUSP aren't configured here. OTG hosts
370	* may be able to use I2C requests to set those bits along
371	* with VBUS switching and overcurrent detection.
372	*/
373
374	if (nwires != 6) {
375	u32 l;
376
377	l = omap_readl(USB_TRANSCEIVER_CTRL);
378	l &= ~CONF_USB2_UNI_R;
379	omap_writel(l, USB_TRANSCEIVER_CTRL);
380	}
381
382	switch (nwires) {
383	case 3:
384	syscon1 = 2;
385	break;
386	case 4:
387	syscon1 = 1;
388	break;
389	case 6:
390	syscon1 = 3;
391	{
392	u32 l;
393
394	omap_cfg_reg(AA9_USB0_VP);
395	omap_cfg_reg(R9_USB0_VM);
396	l = omap_readl(USB_TRANSCEIVER_CTRL);
397	l \|= CONF_USB2_UNI_R;
398	omap_writel(l, USB_TRANSCEIVER_CTRL);
399	}
400	break;
401	default:
402	printk(KERN_ERR "illegal usb%d %d-wire transceiver\n",
403	0, nwires);
404	}
405
406	return syscon1 << 16;
407	}
408
eba36d77	409	static u32 __init omap1_usb1_init(unsigned nwires)
dd0cdd88 TL	410	{
	411	u32 syscon1 = 0;
	412
	413	if (!cpu_is_omap15xx() && nwires != 6) {
	414	u32 l;
	415
	416	l = omap_readl(USB_TRANSCEIVER_CTRL);
	417	l &= ~CONF_USB1_UNI_R;
	418	omap_writel(l, USB_TRANSCEIVER_CTRL);
	419	}
	420	if (nwires == 0)
	421	return 0;
	422
	423	/* external transceiver */
	424	omap_cfg_reg(USB1_TXD);
	425	omap_cfg_reg(USB1_TXEN);
	426	if (nwires != 3)
	427	omap_cfg_reg(USB1_RCV);
	428
	429	if (cpu_is_omap15xx()) {
	430	omap_cfg_reg(USB1_SEO);
	431	omap_cfg_reg(USB1_SPEED);
	432	// SUSP
	433	} else if (cpu_is_omap1610() \|\| cpu_is_omap5912()) {
	434	omap_cfg_reg(W13_1610_USB1_SE0);
	435	omap_cfg_reg(R13_1610_USB1_SPEED);
	436	// SUSP
	437	} else if (cpu_is_omap1710()) {
	438	omap_cfg_reg(R13_1710_USB1_SE0);
	439	// SUSP
	440	} else {
	441	pr_debug("usb%d cpu unrecognized\n", 1);
	442	return 0;
	443	}
	444
	445	switch (nwires) {
	446	case 2:
	447	goto bad;
	448	case 3:
	449	syscon1 = 2;
	450	break;
	451	case 4:
	452	syscon1 = 1;
	453	break;
	454	case 6:
	455	syscon1 = 3;
	456	omap_cfg_reg(USB1_VP);
	457	omap_cfg_reg(USB1_VM);
	458	if (!cpu_is_omap15xx()) {
	459	u32 l;
	460
	461	l = omap_readl(USB_TRANSCEIVER_CTRL);
	462	l \|= CONF_USB1_UNI_R;
	463	omap_writel(l, USB_TRANSCEIVER_CTRL);
	464	}
	465	break;
	466	default:
	467	bad:
	468	printk(KERN_ERR "illegal usb%d %d-wire transceiver\n",
	469	1, nwires);
	470	}
	471
	472	return syscon1 << 20;
	473	}
474
eba36d77	475	static u32 __init omap1_usb2_init(unsigned nwires, unsigned alt_pingroup)
dd0cdd88 TL	476	{
	477	u32 syscon1 = 0;
	478
	479	/* NOTE omap1 erratum: must leave USB2_UNI_R set if usb0 in use */
	480	if (alt_pingroup \|\| nwires == 0)
	481	return 0;
	482
	483	if (!cpu_is_omap15xx() && nwires != 6) {
	484	u32 l;
	485
	486	l = omap_readl(USB_TRANSCEIVER_CTRL);
	487	l &= ~CONF_USB2_UNI_R;
	488	omap_writel(l, USB_TRANSCEIVER_CTRL);
	489	}
	490
	491	/* external transceiver */
	492	if (cpu_is_omap15xx()) {
	493	omap_cfg_reg(USB2_TXD);
	494	omap_cfg_reg(USB2_TXEN);
	495	omap_cfg_reg(USB2_SEO);
	496	if (nwires != 3)
	497	omap_cfg_reg(USB2_RCV);
	498	/* there is no USB2_SPEED */
	499	} else if (cpu_is_omap16xx()) {
	500	omap_cfg_reg(V6_USB2_TXD);
	501	omap_cfg_reg(W9_USB2_TXEN);
	502	omap_cfg_reg(W5_USB2_SE0);
	503	if (nwires != 3)
	504	omap_cfg_reg(Y5_USB2_RCV);
	505	// FIXME omap_cfg_reg(USB2_SPEED);
	506	} else {
	507	pr_debug("usb%d cpu unrecognized\n", 1);
	508	return 0;
	509	}
	510
	511	// omap_cfg_reg(USB2_SUSP);
	512
	513	switch (nwires) {
	514	case 2:
	515	goto bad;
	516	case 3:
	517	syscon1 = 2;
	518	break;
	519	case 4:
	520	syscon1 = 1;
	521	break;
	522	case 5:
	523	goto bad;
	524	case 6:
	525	syscon1 = 3;
	526	if (cpu_is_omap15xx()) {
	527	omap_cfg_reg(USB2_VP);
	528	omap_cfg_reg(USB2_VM);
	529	} else {
	530	u32 l;
	531
	532	omap_cfg_reg(AA9_USB2_VP);
	533	omap_cfg_reg(R9_USB2_VM);
	534	l = omap_readl(USB_TRANSCEIVER_CTRL);
	535	l \|= CONF_USB2_UNI_R;
	536	omap_writel(l, USB_TRANSCEIVER_CTRL);
	537	}
	538	break;
	539	default:
540	bad:
541	printk(KERN_ERR "illegal usb%d %d-wire transceiver\n",
542	2, nwires);
543	}
544
545	return syscon1 << 24;
546	}
547
548	#ifdef CONFIG_ARCH_OMAP15XX
549
550	/* ULPD_DPLL_CTRL */
551	#define DPLL_IOB (1 << 13)
552	#define DPLL_PLL_ENABLE (1 << 4)
553	#define DPLL_LOCK (1 << 0)
554
555	/* ULPD_APLL_CTRL */
556	#define APLL_NDPLL_SWITCH (1 << 0)
557
558	static void __init omap_1510_usb_init(struct omap_usb_config *config)
559	{
560	unsigned int val;
561	u16 w;
562
563	config->usb0_init(config->pins[0], is_usb0_device(config));
564	config->usb1_init(config->pins[1]);
565	config->usb2_init(config->pins[2], 0);
566
567	val = omap_readl(MOD_CONF_CTRL_0) & ~(0x3f << 1);
568	val \|= (config->hmc_mode << 1);
569	omap_writel(val, MOD_CONF_CTRL_0);
570
571	printk("USB: hmc %d", config->hmc_mode);
572	if (config->pins[0])
7e600cad	573	pr_cont(", usb0 %d wires%s", config->pins[0],
dd0cdd88 TL	574	is_usb0_device(config) ? " (dev)" : "");
dd0cdd88 TL	575	if (config->pins[1])
7e600cad	576	pr_cont(", usb1 %d wires", config->pins[1]);
dd0cdd88	577	if (config->pins[2])
7e600cad AK	578	pr_cont(", usb2 %d wires", config->pins[2]);
7e600cad AK	579	pr_cont("\n");
dd0cdd88 TL	580
	581	/* use DPLL for 48 MHz function clock */
	582	pr_debug("APLL %04x DPLL %04x REQ %04x\n", omap_readw(ULPD_APLL_CTRL),
	583	omap_readw(ULPD_DPLL_CTRL), omap_readw(ULPD_SOFT_REQ));
	584
	585	w = omap_readw(ULPD_APLL_CTRL);
	586	w &= ~APLL_NDPLL_SWITCH;
	587	omap_writew(w, ULPD_APLL_CTRL);
	588
	589	w = omap_readw(ULPD_DPLL_CTRL);
	590	w \|= DPLL_IOB \| DPLL_PLL_ENABLE;
	591	omap_writew(w, ULPD_DPLL_CTRL);
	592
	593	w = omap_readw(ULPD_SOFT_REQ);
	594	w \|= SOFT_UDC_REQ \| SOFT_DPLL_REQ;
	595	omap_writew(w, ULPD_SOFT_REQ);
	596
	597	while (!(omap_readw(ULPD_DPLL_CTRL) & DPLL_LOCK))
	598	cpu_relax();
	599
0345a1e3	600	#if IS_ENABLED(CONFIG_USB_OMAP)
dd0cdd88 TL	601	if (config->register_dev) {
	602	int status;
	603
	604	udc_device.dev.platform_data = config;
	605	status = platform_device_register(&udc_device);
	606	if (status)
	607	pr_debug("can't register UDC device, %d\n", status);
	608	/* udc driver gates 48MHz by D+ pullup */
	609	}
	610	#endif
	611
fcebddb9	612	#if IS_ENABLED(CONFIG_USB_OHCI_HCD)
dd0cdd88 TL	613	if (config->register_host) {
	614	int status;
	615
	616	ohci_device.dev.platform_data = config;
	617	status = platform_device_register(&ohci_device);
	618	if (status)
	619	pr_debug("can't register OHCI device, %d\n", status);
	620	/* hcd explicitly gates 48MHz */
	621	}
	622	#endif
	623	}
	624
	625	#else
	626	static inline void omap_1510_usb_init(struct omap_usb_config *config) {}
	627	#endif
	628
07fd296d	629	void __init omap1_usb_init(struct omap_usb_config *_pdata)
dd0cdd88	630	{
07fd296d AK	631	struct omap_usb_config *pdata;
	632
	633	pdata = kmemdup(_pdata, sizeof(*pdata), GFP_KERNEL);
	634	if (!pdata)
	635	return;
	636
dd0cdd88 TL	637	pdata->usb0_init = omap1_usb0_init;
	638	pdata->usb1_init = omap1_usb1_init;
	639	pdata->usb2_init = omap1_usb2_init;
	640	udc_device_init(pdata);
	641	ohci_device_init(pdata);
	642	otg_device_init(pdata);
	643
	644	if (cpu_is_omap7xx() \|\| cpu_is_omap16xx())
	645	omap_otg_init(pdata);
	646	else if (cpu_is_omap15xx())
	647	omap_1510_usb_init(pdata);
	648	else
	649	printk(KERN_ERR "USB: No init for your chip yet\n");
	650	}