arch/arm/mach-omap1/usb.c - LeafOS-Devices/android_kernel_samsung_gta4xl - Gitiles

 /*
  * Platform level USB initialization for FS USB OTG controller on omap1 and 24xx
  *
  * 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

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

 	/* 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
 	if (cpu_class_is_omap1())
 		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)
 		printk(", usb2 alt %d wires", config->pins[2]);
 	else if (config->pins[0])
 		printk(", usb0 %d wires%s", config->pins[0],
 			is_usb0_device(config) ? " (dev)" : "");
 	if (config->pins[1])
 		printk(", usb1 %d wires", config->pins[1]);
 	if (!alt_pingroup && config->pins[2])
 		printk(", usb2 %d wires", config->pins[2]);
 	if (config->otg)
 		printk(", Mini-AB on usb%d", config->otg - 1);
 	printk("\n");

 	if (cpu_class_is_omap1()) {
 		u16 w;

 		/* 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;

 #ifdef	CONFIG_USB_GADGET_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	defined(CONFIG_USB_OHCI_HCD) || defined(CONFIG_USB_OHCI_HCD_MODULE)
 	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
 void omap_otg_init(struct omap_usb_config *config) {}
 #endif

 #ifdef	CONFIG_USB_GADGET_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	defined(CONFIG_USB_OHCI_HCD) || defined(CONFIG_USB_OHCI_HCD_MODULE)

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

 #ifdef	CONFIG_USB_GADGET_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	defined(CONFIG_USB_OHCI_HCD) || defined(CONFIG_USB_OHCI_HCD_MODULE)
 	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)
 {
 	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");
 }
	/*
	* Platform level USB initialization for FS USB OTG controller on omap1 and 24xx
	*
	* 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

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

	/* 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
	if (cpu_class_is_omap1())
	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)
	printk(", usb2 alt %d wires", config->pins[2]);
	else if (config->pins[0])
	printk(", usb0 %d wires%s", config->pins[0],
	is_usb0_device(config) ? " (dev)" : "");
	if (config->pins[1])
	printk(", usb1 %d wires", config->pins[1]);
	if (!alt_pingroup && config->pins[2])
	printk(", usb2 %d wires", config->pins[2]);
	if (config->otg)
	printk(", Mini-AB on usb%d", config->otg - 1);
	printk("\n");

	if (cpu_class_is_omap1()) {
	u16 w;

	/* 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;

	#ifdef CONFIG_USB_GADGET_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 defined(CONFIG_USB_OHCI_HCD) \|\| defined(CONFIG_USB_OHCI_HCD_MODULE)
	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
	void omap_otg_init(struct omap_usb_config *config) {}
	#endif

	#ifdef CONFIG_USB_GADGET_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 defined(CONFIG_USB_OHCI_HCD) \|\| defined(CONFIG_USB_OHCI_HCD_MODULE)

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

	#ifdef CONFIG_USB_GADGET_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 defined(CONFIG_USB_OHCI_HCD) \|\| defined(CONFIG_USB_OHCI_HCD_MODULE)
	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)
	{
	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");
	}