[linux-2.6-block.git] / drivers / usb / host / ohci-omap.c

/*
 * OHCI HCD (Host Controller Driver) for USB.
 *
 * (C) Copyright 1999 Roman Weissgaerber <weissg@vienna.at>
 * (C) Copyright 2000-2005 David Brownell
 * (C) Copyright 2002 Hewlett-Packard Company
 * 
 * OMAP Bus Glue
 *
 * Modified for OMAP by Tony Lindgren <tony@atomide.com>
 * Based on the 2.4 OMAP OHCI driver originally done by MontaVista Software Inc.
 * and on ohci-sa1111.c by Christopher Hoover <ch@hpl.hp.com>
 *
 * This file is licenced under the GPL.
 */

#include <asm/hardware.h>
#include <asm/io.h>
#include <asm/mach-types.h>

#include <asm/arch/mux.h>
#include <asm/arch/irqs.h>
#include <asm/arch/gpio.h>
#include <asm/arch/fpga.h>
#include <asm/arch/usb.h>
#include <asm/hardware/clock.h>


/* OMAP-1510 OHCI has its own MMU for DMA */
#define OMAP1510_LB_MEMSIZE	32	/* Should be same as SDRAM size */
#define OMAP1510_LB_CLOCK_DIV	0xfffec10c
#define OMAP1510_LB_MMU_CTL	0xfffec208
#define OMAP1510_LB_MMU_LCK	0xfffec224
#define OMAP1510_LB_MMU_LD_TLB	0xfffec228
#define OMAP1510_LB_MMU_CAM_H	0xfffec22c
#define OMAP1510_LB_MMU_CAM_L	0xfffec230
#define OMAP1510_LB_MMU_RAM_H	0xfffec234
#define OMAP1510_LB_MMU_RAM_L	0xfffec238


#ifndef CONFIG_ARCH_OMAP
#error "This file is OMAP bus glue.  CONFIG_OMAP must be defined."
#endif

#ifdef CONFIG_TPS65010
#include <asm/arch/tps65010.h>
#else

#define LOW	0
#define HIGH	1

#define GPIO1	1

static inline int tps65010_set_gpio_out_value(unsigned gpio, unsigned value)
{
	return 0;
}

#endif

extern int usb_disabled(void);
extern int ocpi_enable(void);

static struct clk *usb_host_ck;

static void omap_ohci_clock_power(int on)
{
	if (on) {
		clk_enable(usb_host_ck);
		/* guesstimate for T5 == 1x 32K clock + APLL lock time */
		udelay(100);
	} else {
		clk_disable(usb_host_ck);
	}
}

/*
 * Board specific gang-switched transceiver power on/off.
 * NOTE:  OSK supplies power from DC, not battery.
 */
static int omap_ohci_transceiver_power(int on)
{
	if (on) {
		if (machine_is_omap_innovator() && cpu_is_omap1510())
			fpga_write(fpga_read(INNOVATOR_FPGA_CAM_USB_CONTROL)
				| ((1 << 5/*usb1*/) | (1 << 3/*usb2*/)), 
			       INNOVATOR_FPGA_CAM_USB_CONTROL);
		else if (machine_is_omap_osk())
			tps65010_set_gpio_out_value(GPIO1, LOW);
	} else {
		if (machine_is_omap_innovator() && cpu_is_omap1510())
			fpga_write(fpga_read(INNOVATOR_FPGA_CAM_USB_CONTROL)
				& ~((1 << 5/*usb1*/) | (1 << 3/*usb2*/)), 
			       INNOVATOR_FPGA_CAM_USB_CONTROL);
		else if (machine_is_omap_osk())
			tps65010_set_gpio_out_value(GPIO1, HIGH);
	}

	return 0;
}

/*
 * OMAP-1510 specific Local Bus clock on/off
 */
static int omap_1510_local_bus_power(int on)
{
	if (on) {
		omap_writel((1 << 1) | (1 << 0), OMAP1510_LB_MMU_CTL);
		udelay(200);
	} else {
		omap_writel(0, OMAP1510_LB_MMU_CTL);
	}

	return 0;
}

/*
 * OMAP-1510 specific Local Bus initialization
 * NOTE: This assumes 32MB memory size in OMAP1510LB_MEMSIZE.
 *       See also arch/mach-omap/memory.h for __virt_to_dma() and 
 *       __dma_to_virt() which need to match with the physical 
 *       Local Bus address below.
 */
static int omap_1510_local_bus_init(void)
{
	unsigned int tlb;
	unsigned long lbaddr, physaddr;

	omap_writel((omap_readl(OMAP1510_LB_CLOCK_DIV) & 0xfffffff8) | 0x4, 
	       OMAP1510_LB_CLOCK_DIV);

	/* Configure the Local Bus MMU table */
	for (tlb = 0; tlb < OMAP1510_LB_MEMSIZE; tlb++) {
		lbaddr = tlb * 0x00100000 + OMAP1510_LB_OFFSET;
		physaddr = tlb * 0x00100000 + PHYS_OFFSET;
		omap_writel((lbaddr & 0x0fffffff) >> 22, OMAP1510_LB_MMU_CAM_H);
		omap_writel(((lbaddr & 0x003ffc00) >> 6) | 0xc, 
		       OMAP1510_LB_MMU_CAM_L);
		omap_writel(physaddr >> 16, OMAP1510_LB_MMU_RAM_H);
		omap_writel((physaddr & 0x0000fc00) | 0x300, OMAP1510_LB_MMU_RAM_L);
		omap_writel(tlb << 4, OMAP1510_LB_MMU_LCK);
		omap_writel(0x1, OMAP1510_LB_MMU_LD_TLB);
	}

	/* Enable the walking table */
	omap_writel(omap_readl(OMAP1510_LB_MMU_CTL) | (1 << 3), OMAP1510_LB_MMU_CTL);
	udelay(200);

	return 0;
}

#ifdef	CONFIG_USB_OTG

static void start_hnp(struct ohci_hcd *ohci)
{
	const unsigned	port = ohci_to_hcd(ohci)->self.otg_port - 1;
	unsigned long	flags;

	otg_start_hnp(ohci->transceiver);

	local_irq_save(flags);
	ohci->transceiver->state = OTG_STATE_A_SUSPEND;
	writel (RH_PS_PSS, &ohci->regs->roothub.portstatus [port]);
	OTG_CTRL_REG &= ~OTG_A_BUSREQ;
	local_irq_restore(flags);
}

#endif

/*-------------------------------------------------------------------------*/

static int omap_start_hc(struct ohci_hcd *ohci, struct platform_device *pdev)
{
	struct omap_usb_config	*config = pdev->dev.platform_data;
	int			need_transceiver = (config->otg != 0);
	int			ret;

	dev_dbg(&pdev->dev, "starting USB Controller\n");

	if (config->otg) {
		ohci_to_hcd(ohci)->self.otg_port = config->otg;
		/* default/minimum OTG power budget:  8 mA */
		ohci_to_hcd(ohci)->power_budget = 8;
	}

	/* boards can use OTG transceivers in non-OTG modes */
	need_transceiver = need_transceiver
			|| machine_is_omap_h2() || machine_is_omap_h3();

	if (cpu_is_omap16xx())
		ocpi_enable();

#ifdef	CONFIG_ARCH_OMAP_OTG
	if (need_transceiver) {
		ohci->transceiver = otg_get_transceiver();
		if (ohci->transceiver) {
			int	status = otg_set_host(ohci->transceiver,
						&ohci_to_hcd(ohci)->self);
			dev_dbg(&pdev->dev, "init %s transceiver, status %d\n",
					ohci->transceiver->label, status);
			if (status) {
				if (ohci->transceiver)
					put_device(ohci->transceiver->dev);
				return status;
			}
		} else {
			dev_err(&pdev->dev, "can't find transceiver\n");
			return -ENODEV;
		}
	}
#endif

	omap_ohci_clock_power(1);

	if (cpu_is_omap1510()) {
		omap_1510_local_bus_power(1);
		omap_1510_local_bus_init();
	}

	if ((ret = ohci_init(ohci)) < 0)
		return ret;

	/* board-specific power switching and overcurrent support */
	if (machine_is_omap_osk() || machine_is_omap_innovator()) {
		u32	rh = roothub_a (ohci);

		/* power switching (ganged by default) */
		rh &= ~RH_A_NPS;

		/* TPS2045 switch for internal transceiver (port 1) */
		if (machine_is_omap_osk()) {
			ohci_to_hcd(ohci)->power_budget = 250;

			rh &= ~RH_A_NOCP;

			/* gpio9 for overcurrent detction */
			omap_cfg_reg(W8_1610_GPIO9);
			omap_request_gpio(9);
			omap_set_gpio_direction(9, 1 /* IN */);

			/* for paranoia's sake:  disable USB.PUEN */
			omap_cfg_reg(W4_USB_HIGHZ);
		}
		ohci_writel(ohci, rh, &ohci->regs->roothub.a);
		distrust_firmware = 0;
	}

	/* FIXME khubd hub requests should manage power switching */
	omap_ohci_transceiver_power(1);

	/* board init will have already handled HMC and mux setup.
	 * any external transceiver should already be initialized
	 * too, so all configured ports use the right signaling now.
	 */

	return 0;
}

static void omap_stop_hc(struct platform_device *pdev)
{
	dev_dbg(&pdev->dev, "stopping USB Controller\n");
	omap_ohci_clock_power(0);
}


/*-------------------------------------------------------------------------*/

void usb_hcd_omap_remove (struct usb_hcd *, struct platform_device *);

/* configure so an HC device and id are always provided */
/* always called with process context; sleeping is OK */


/**
 * usb_hcd_omap_probe - initialize OMAP-based HCDs
 * Context: !in_interrupt()
 *
 * Allocates basic resources for this USB host controller, and
 * then invokes the start() method for the HCD associated with it
 * through the hotplug entry's driver_data.
 */
int usb_hcd_omap_probe (const struct hc_driver *driver,
			  struct platform_device *pdev)
{
	int retval;
	struct usb_hcd *hcd = 0;
	struct ohci_hcd *ohci;

	if (pdev->num_resources != 2) {
		printk(KERN_ERR "hcd probe: invalid num_resources: %i\n", 
		       pdev->num_resources);
		return -ENODEV;
	}

	if (pdev->resource[0].flags != IORESOURCE_MEM 
			|| pdev->resource[1].flags != IORESOURCE_IRQ) {
		printk(KERN_ERR "hcd probe: invalid resource type\n");
		return -ENODEV;
	}

	usb_host_ck = clk_get(0, "usb_hhc_ck");
	if (IS_ERR(usb_host_ck))
		return PTR_ERR(usb_host_ck);

	hcd = usb_create_hcd (driver, &pdev->dev, pdev->dev.bus_id);
	if (!hcd) {
		retval = -ENOMEM;
		goto err0;
	}
	hcd->rsrc_start = pdev->resource[0].start;
	hcd->rsrc_len = pdev->resource[0].end - pdev->resource[0].start + 1;

	if (!request_mem_region(hcd->rsrc_start, hcd->rsrc_len, hcd_name)) {
		dev_dbg(&pdev->dev, "request_mem_region failed\n");
		retval = -EBUSY;
		goto err1;
	}

	hcd->regs = (void __iomem *) (int) IO_ADDRESS(hcd->rsrc_start);

	ohci = hcd_to_ohci(hcd);
	ohci_hcd_init(ohci);

	retval = omap_start_hc(ohci, pdev);
	if (retval < 0)
		goto err2;

	retval = usb_add_hcd(hcd, platform_get_irq(pdev, 0), SA_INTERRUPT);
	if (retval == 0)
		return retval;

	omap_stop_hc(pdev);
err2:
	release_mem_region(hcd->rsrc_start, hcd->rsrc_len);
err1:
	usb_put_hcd(hcd);
err0:
	clk_put(usb_host_ck);
	return retval;
}


/* may be called with controller, bus, and devices active */

/**
 * usb_hcd_omap_remove - shutdown processing for OMAP-based HCDs
 * @dev: USB Host Controller being removed
 * Context: !in_interrupt()
 *
 * Reverses the effect of usb_hcd_omap_probe(), first invoking
 * the HCD's stop() method.  It is always called from a thread
 * context, normally "rmmod", "apmd", or something similar.
 *
 */
void usb_hcd_omap_remove (struct usb_hcd *hcd, struct platform_device *pdev)
{
	usb_remove_hcd(hcd);
	if (machine_is_omap_osk())
		omap_free_gpio(9);
	omap_stop_hc(pdev);
	release_mem_region(hcd->rsrc_start, hcd->rsrc_len);
	usb_put_hcd(hcd);
	clk_put(usb_host_ck);
}

/*-------------------------------------------------------------------------*/

static int __devinit
ohci_omap_start (struct usb_hcd *hcd)
{
	struct omap_usb_config *config;
	struct ohci_hcd	*ohci = hcd_to_ohci (hcd);
	int		ret;

	config = hcd->self.controller->platform_data;
	if (config->otg || config->rwc)
		writel(OHCI_CTRL_RWC, &ohci->regs->control);

	if ((ret = ohci_run (ohci)) < 0) {
		dev_err(hcd->self.controller, "can't start\n");
		ohci_stop (hcd);
		return ret;
	}
	return 0;
}

/*-------------------------------------------------------------------------*/

static const struct hc_driver ohci_omap_hc_driver = {
	.description =		hcd_name,
	.product_desc =		"OMAP OHCI",
	.hcd_priv_size =	sizeof(struct ohci_hcd),

	/*
	 * generic hardware linkage
	 */
	.irq =			ohci_irq,
	.flags =		HCD_USB11 | HCD_MEMORY,

	/*
	 * basic lifecycle operations
	 */
	.start =		ohci_omap_start,
	.stop =			ohci_stop,

	/*
	 * managing i/o requests and associated device resources
	 */
	.urb_enqueue =		ohci_urb_enqueue,
	.urb_dequeue =		ohci_urb_dequeue,
	.endpoint_disable =	ohci_endpoint_disable,

	/*
	 * scheduling support
	 */
	.get_frame_number =	ohci_get_frame,

	/*
	 * root hub support
	 */
	.hub_status_data =	ohci_hub_status_data,
	.hub_control =		ohci_hub_control,
#ifdef	CONFIG_PM
	.bus_suspend =		ohci_bus_suspend,
	.bus_resume =		ohci_bus_resume,
#endif
	.start_port_reset =	ohci_start_port_reset,
};

/*-------------------------------------------------------------------------*/

static int ohci_hcd_omap_drv_probe(struct device *dev)
{
	return usb_hcd_omap_probe(&ohci_omap_hc_driver,
				to_platform_device(dev));
}

static int ohci_hcd_omap_drv_remove(struct device *dev)
{
	struct platform_device	*pdev = to_platform_device(dev);
	struct usb_hcd		*hcd = dev_get_drvdata(dev);
	struct ohci_hcd		*ohci = hcd_to_ohci (hcd);

	usb_hcd_omap_remove(hcd, pdev);
	if (ohci->transceiver) {
		(void) otg_set_host(ohci->transceiver, 0);
		put_device(ohci->transceiver->dev);
	}
	dev_set_drvdata(dev, NULL);

	return 0;
}

/*-------------------------------------------------------------------------*/

#ifdef	CONFIG_PM

static int ohci_omap_suspend(struct device *dev, pm_message_t message)
{
	struct ohci_hcd	*ohci = hcd_to_ohci(dev_get_drvdata(dev));

	if (time_before(jiffies, ohci->next_statechange))
		msleep(5);
	ohci->next_statechange = jiffies;

	omap_ohci_clock_power(0);
	ohci_to_hcd(ohci)->state = HC_STATE_SUSPENDED;
	dev->power.power_state = PMSG_SUSPEND;
	return 0;
}

static int ohci_omap_resume(struct device *dev)
{
	struct ohci_hcd	*ohci = hcd_to_ohci(dev_get_drvdata(dev));

	if (time_before(jiffies, ohci->next_statechange))
		msleep(5);
	ohci->next_statechange = jiffies;

	omap_ohci_clock_power(1);
	dev->power.power_state = PMSG_ON;
	usb_hcd_resume_root_hub(dev_get_drvdata(dev));
	return 0;
}

#endif

/*-------------------------------------------------------------------------*/

/*
 * Driver definition to register with the OMAP bus
 */
static struct device_driver ohci_hcd_omap_driver = {
	.name		= "ohci",
	.bus		= &platform_bus_type,
	.probe		= ohci_hcd_omap_drv_probe,
	.remove		= ohci_hcd_omap_drv_remove,
#ifdef	CONFIG_PM
	.suspend	= ohci_omap_suspend,
	.resume		= ohci_omap_resume,
#endif
};

static int __init ohci_hcd_omap_init (void)
{
	printk (KERN_DEBUG "%s: " DRIVER_INFO " (OMAP)\n", hcd_name);
	if (usb_disabled())
		return -ENODEV;

	pr_debug("%s: block sizes: ed %Zd td %Zd\n", hcd_name,
		sizeof (struct ed), sizeof (struct td));

	return driver_register(&ohci_hcd_omap_driver);
}

static void __exit ohci_hcd_omap_cleanup (void)
{
	driver_unregister(&ohci_hcd_omap_driver);
}

module_init (ohci_hcd_omap_init);
module_exit (ohci_hcd_omap_cleanup);
Commit	Line	Data
1da177e4 LT	1	/*
	2	* OHCI HCD (Host Controller Driver) for USB.
	3	*
	4	* (C) Copyright 1999 Roman Weissgaerber <weissg@vienna.at>
	5	* (C) Copyright 2000-2005 David Brownell
	6	* (C) Copyright 2002 Hewlett-Packard Company
	7	*
	8	* OMAP Bus Glue
	9	*
	10	* Modified for OMAP by Tony Lindgren <tony@atomide.com>
	11	* Based on the 2.4 OMAP OHCI driver originally done by MontaVista Software Inc.
	12	* and on ohci-sa1111.c by Christopher Hoover <ch@hpl.hp.com>
	13	*
	14	* This file is licenced under the GPL.
	15	*/
	16
	17	#include <asm/hardware.h>
	18	#include <asm/io.h>
	19	#include <asm/mach-types.h>
	20
1da177e4 LT	21	#include <asm/arch/mux.h>
	22	#include <asm/arch/irqs.h>
	23	#include <asm/arch/gpio.h>
	24	#include <asm/arch/fpga.h>
	25	#include <asm/arch/usb.h>
	26	#include <asm/hardware/clock.h>
	27
	28
	29	/* OMAP-1510 OHCI has its own MMU for DMA */
	30	#define OMAP1510_LB_MEMSIZE 32 /* Should be same as SDRAM size */
	31	#define OMAP1510_LB_CLOCK_DIV 0xfffec10c
	32	#define OMAP1510_LB_MMU_CTL 0xfffec208
	33	#define OMAP1510_LB_MMU_LCK 0xfffec224
	34	#define OMAP1510_LB_MMU_LD_TLB 0xfffec228
	35	#define OMAP1510_LB_MMU_CAM_H 0xfffec22c
	36	#define OMAP1510_LB_MMU_CAM_L 0xfffec230
	37	#define OMAP1510_LB_MMU_RAM_H 0xfffec234
	38	#define OMAP1510_LB_MMU_RAM_L 0xfffec238
	39
	40
	41	#ifndef CONFIG_ARCH_OMAP
	42	#error "This file is OMAP bus glue. CONFIG_OMAP must be defined."
	43	#endif
	44
	45	#ifdef CONFIG_TPS65010
	46	#include <asm/arch/tps65010.h>
	47	#else
	48
	49	#define LOW 0
	50	#define HIGH 1
	51
	52	#define GPIO1 1
	53
	54	static inline int tps65010_set_gpio_out_value(unsigned gpio, unsigned value)
	55	{
	56	return 0;
	57	}
	58
	59	#endif
	60
	61	extern int usb_disabled(void);
	62	extern int ocpi_enable(void);
	63
	64	static struct clk *usb_host_ck;
	65
	66	static void omap_ohci_clock_power(int on)
	67	{
	68	if (on) {
	69	clk_enable(usb_host_ck);
	70	/* guesstimate for T5 == 1x 32K clock + APLL lock time */
	71	udelay(100);
	72	} else {
	73	clk_disable(usb_host_ck);
	74	}
	75	}
	76
	77	/*
	78	* Board specific gang-switched transceiver power on/off.
	79	* NOTE: OSK supplies power from DC, not battery.
	80	*/
	81	static int omap_ohci_transceiver_power(int on)
	82	{
	83	if (on) {
	84	if (machine_is_omap_innovator() && cpu_is_omap1510())
85	fpga_write(fpga_read(INNOVATOR_FPGA_CAM_USB_CONTROL)
86	\| ((1 << 5/usb1/) \| (1 << 3/usb2/)),
87	INNOVATOR_FPGA_CAM_USB_CONTROL);
88	else if (machine_is_omap_osk())
89	tps65010_set_gpio_out_value(GPIO1, LOW);
90	} else {
91	if (machine_is_omap_innovator() && cpu_is_omap1510())
92	fpga_write(fpga_read(INNOVATOR_FPGA_CAM_USB_CONTROL)
93	& ~((1 << 5/usb1/) \| (1 << 3/usb2/)),
94	INNOVATOR_FPGA_CAM_USB_CONTROL);
95	else if (machine_is_omap_osk())
96	tps65010_set_gpio_out_value(GPIO1, HIGH);
97	}
98
99	return 0;
100	}
101
102	/*
103	* OMAP-1510 specific Local Bus clock on/off
104	*/
105	static int omap_1510_local_bus_power(int on)
106	{
107	if (on) {
108	omap_writel((1 << 1) \| (1 << 0), OMAP1510_LB_MMU_CTL);
109	udelay(200);
110	} else {
111	omap_writel(0, OMAP1510_LB_MMU_CTL);
112	}
113
114	return 0;
115	}
116
117	/*
118	* OMAP-1510 specific Local Bus initialization
119	* NOTE: This assumes 32MB memory size in OMAP1510LB_MEMSIZE.
120	* See also arch/mach-omap/memory.h for __virt_to_dma() and
121	* __dma_to_virt() which need to match with the physical
122	* Local Bus address below.
123	*/
124	static int omap_1510_local_bus_init(void)
125	{
126	unsigned int tlb;
127	unsigned long lbaddr, physaddr;
128
129	omap_writel((omap_readl(OMAP1510_LB_CLOCK_DIV) & 0xfffffff8) \| 0x4,
130	OMAP1510_LB_CLOCK_DIV);
131
132	/* Configure the Local Bus MMU table */
133	for (tlb = 0; tlb < OMAP1510_LB_MEMSIZE; tlb++) {
134	lbaddr = tlb * 0x00100000 + OMAP1510_LB_OFFSET;
135	physaddr = tlb * 0x00100000 + PHYS_OFFSET;
136	omap_writel((lbaddr & 0x0fffffff) >> 22, OMAP1510_LB_MMU_CAM_H);
137	omap_writel(((lbaddr & 0x003ffc00) >> 6) \| 0xc,
138	OMAP1510_LB_MMU_CAM_L);
139	omap_writel(physaddr >> 16, OMAP1510_LB_MMU_RAM_H);
140	omap_writel((physaddr & 0x0000fc00) \| 0x300, OMAP1510_LB_MMU_RAM_L);
141	omap_writel(tlb << 4, OMAP1510_LB_MMU_LCK);
142	omap_writel(0x1, OMAP1510_LB_MMU_LD_TLB);
143	}
144
145	/* Enable the walking table */
146	omap_writel(omap_readl(OMAP1510_LB_MMU_CTL) \| (1 << 3), OMAP1510_LB_MMU_CTL);
147	udelay(200);
148
149	return 0;
150	}
151
152	#ifdef CONFIG_USB_OTG
153
154	static void start_hnp(struct ohci_hcd *ohci)
155	{
156	const unsigned port = ohci_to_hcd(ohci)->self.otg_port - 1;
157	unsigned long flags;
158
159	otg_start_hnp(ohci->transceiver);
160
161	local_irq_save(flags);
162	ohci->transceiver->state = OTG_STATE_A_SUSPEND;
163	writel (RH_PS_PSS, &ohci->regs->roothub.portstatus [port]);
164	OTG_CTRL_REG &= ~OTG_A_BUSREQ;
165	local_irq_restore(flags);
166	}
167
168	#endif
169
170	/-------------------------------------------------------------------------/
171
172	static int omap_start_hc(struct ohci_hcd ohci, struct platform_device pdev)
173	{
174	struct omap_usb_config *config = pdev->dev.platform_data;
175	int need_transceiver = (config->otg != 0);
176	int ret;
177
178	dev_dbg(&pdev->dev, "starting USB Controller\n");
179
180	if (config->otg) {
181	ohci_to_hcd(ohci)->self.otg_port = config->otg;
182	/* default/minimum OTG power budget: 8 mA */
bc96c0ad	183	ohci_to_hcd(ohci)->power_budget = 8;
1da177e4 LT	184	}
	185
	186	/* boards can use OTG transceivers in non-OTG modes */
	187	need_transceiver = need_transceiver
	188	\|\| machine_is_omap_h2() \|\| machine_is_omap_h3();
	189
	190	if (cpu_is_omap16xx())
	191	ocpi_enable();
	192
	193	#ifdef CONFIG_ARCH_OMAP_OTG
	194	if (need_transceiver) {
	195	ohci->transceiver = otg_get_transceiver();
	196	if (ohci->transceiver) {
	197	int status = otg_set_host(ohci->transceiver,
	198	&ohci_to_hcd(ohci)->self);
	199	dev_dbg(&pdev->dev, "init %s transceiver, status %d\n",
	200	ohci->transceiver->label, status);
	201	if (status) {
	202	if (ohci->transceiver)
	203	put_device(ohci->transceiver->dev);
	204	return status;
	205	}
	206	} else {
	207	dev_err(&pdev->dev, "can't find transceiver\n");
	208	return -ENODEV;
	209	}
	210	}
	211	#endif
	212
	213	omap_ohci_clock_power(1);
	214
	215	if (cpu_is_omap1510()) {
	216	omap_1510_local_bus_power(1);
	217	omap_1510_local_bus_init();
	218	}
	219
	220	if ((ret = ohci_init(ohci)) < 0)
	221	return ret;
	222
	223	/* board-specific power switching and overcurrent support */
	224	if (machine_is_omap_osk() \|\| machine_is_omap_innovator()) {
	225	u32 rh = roothub_a (ohci);
	226
	227	/* power switching (ganged by default) */
	228	rh &= ~RH_A_NPS;
	229
	230	/* TPS2045 switch for internal transceiver (port 1) */
	231	if (machine_is_omap_osk()) {
bc96c0ad	232	ohci_to_hcd(ohci)->power_budget = 250;
1da177e4 LT	233
	234	rh &= ~RH_A_NOCP;
	235
	236	/* gpio9 for overcurrent detction */
	237	omap_cfg_reg(W8_1610_GPIO9);
	238	omap_request_gpio(9);
	239	omap_set_gpio_direction(9, 1 /* IN */);
	240
	241	/* for paranoia's sake: disable USB.PUEN */
	242	omap_cfg_reg(W4_USB_HIGHZ);
	243	}
	244	ohci_writel(ohci, rh, &ohci->regs->roothub.a);
	245	distrust_firmware = 0;
	246	}
	247
	248	/* FIXME khubd hub requests should manage power switching */
	249	omap_ohci_transceiver_power(1);
	250
	251	/* board init will have already handled HMC and mux setup.
	252	* any external transceiver should already be initialized
	253	* too, so all configured ports use the right signaling now.
	254	*/
	255
	256	return 0;
	257	}
	258
	259	static void omap_stop_hc(struct platform_device *pdev)
	260	{
	261	dev_dbg(&pdev->dev, "stopping USB Controller\n");
	262	omap_ohci_clock_power(0);
	263	}
	264
	265
	266	/-------------------------------------------------------------------------/
	267
	268	void usb_hcd_omap_remove (struct usb_hcd , struct platform_device );
	269
	270	/* configure so an HC device and id are always provided */
	271	/* always called with process context; sleeping is OK */
	272
	273
	274	/**
	275	* usb_hcd_omap_probe - initialize OMAP-based HCDs
	276	* Context: !in_interrupt()
	277	*
	278	* Allocates basic resources for this USB host controller, and
	279	* then invokes the start() method for the HCD associated with it
	280	* through the hotplug entry's driver_data.
	281	*/
	282	int usb_hcd_omap_probe (const struct hc_driver *driver,
	283	struct platform_device *pdev)
	284	{
	285	int retval;
	286	struct usb_hcd *hcd = 0;
	287	struct ohci_hcd *ohci;
	288
	289	if (pdev->num_resources != 2) {
	290	printk(KERN_ERR "hcd probe: invalid num_resources: %i\n",
	291	pdev->num_resources);
	292	return -ENODEV;
	293	}
	294
	295	if (pdev->resource[0].flags != IORESOURCE_MEM
	296	\|\| pdev->resource[1].flags != IORESOURCE_IRQ) {
297	printk(KERN_ERR "hcd probe: invalid resource type\n");
298	return -ENODEV;
299	}
300
301	usb_host_ck = clk_get(0, "usb_hhc_ck");
302	if (IS_ERR(usb_host_ck))
303	return PTR_ERR(usb_host_ck);
304
305	hcd = usb_create_hcd (driver, &pdev->dev, pdev->dev.bus_id);
306	if (!hcd) {
307	retval = -ENOMEM;
308	goto err0;
309	}
310	hcd->rsrc_start = pdev->resource[0].start;
311	hcd->rsrc_len = pdev->resource[0].end - pdev->resource[0].start + 1;
312
313	if (!request_mem_region(hcd->rsrc_start, hcd->rsrc_len, hcd_name)) {
314	dev_dbg(&pdev->dev, "request_mem_region failed\n");
315	retval = -EBUSY;
316	goto err1;
317	}
318
319	hcd->regs = (void __iomem *) (int) IO_ADDRESS(hcd->rsrc_start);
320
321	ohci = hcd_to_ohci(hcd);
322	ohci_hcd_init(ohci);
323
324	retval = omap_start_hc(ohci, pdev);
325	if (retval < 0)
326	goto err2;
327
328	retval = usb_add_hcd(hcd, platform_get_irq(pdev, 0), SA_INTERRUPT);
329	if (retval == 0)
330	return retval;
331
332	omap_stop_hc(pdev);
333	err2:
334	release_mem_region(hcd->rsrc_start, hcd->rsrc_len);
335	err1:
336	usb_put_hcd(hcd);
337	err0:
338	clk_put(usb_host_ck);
339	return retval;
340	}
341
342
343	/* may be called with controller, bus, and devices active */
344
345	/**
346	* usb_hcd_omap_remove - shutdown processing for OMAP-based HCDs
347	* @dev: USB Host Controller being removed
348	* Context: !in_interrupt()
349	*
350	* Reverses the effect of usb_hcd_omap_probe(), first invoking
351	* the HCD's stop() method. It is always called from a thread
352	* context, normally "rmmod", "apmd", or something similar.
353	*
354	*/
355	void usb_hcd_omap_remove (struct usb_hcd hcd, struct platform_device pdev)
356	{
357	usb_remove_hcd(hcd);
358	if (machine_is_omap_osk())
359	omap_free_gpio(9);
360	omap_stop_hc(pdev);
361	release_mem_region(hcd->rsrc_start, hcd->rsrc_len);
362	usb_put_hcd(hcd);
363	clk_put(usb_host_ck);
364	}
365
366	/-------------------------------------------------------------------------/
367
368	static int __devinit
369	ohci_omap_start (struct usb_hcd *hcd)
370	{
371	struct omap_usb_config *config;
372	struct ohci_hcd *ohci = hcd_to_ohci (hcd);
373	int ret;
374
375	config = hcd->self.controller->platform_data;
376	if (config->otg \|\| config->rwc)
377	writel(OHCI_CTRL_RWC, &ohci->regs->control);
378
379	if ((ret = ohci_run (ohci)) < 0) {
380	dev_err(hcd->self.controller, "can't start\n");
381	ohci_stop (hcd);
382	return ret;
383	}
384	return 0;
385	}
386
387	/-------------------------------------------------------------------------/
388
389	static const struct hc_driver ohci_omap_hc_driver = {
390	.description = hcd_name,
391	.product_desc = "OMAP OHCI",
392	.hcd_priv_size = sizeof(struct ohci_hcd),
393
394	/*
395	* generic hardware linkage
396	*/
397	.irq = ohci_irq,
398	.flags = HCD_USB11 \| HCD_MEMORY,
399
400	/*
401	* basic lifecycle operations
402	*/
403	.start = ohci_omap_start,
404	.stop = ohci_stop,
405
406	/*
407	* managing i/o requests and associated device resources
408	*/
409	.urb_enqueue = ohci_urb_enqueue,
410	.urb_dequeue = ohci_urb_dequeue,
411	.endpoint_disable = ohci_endpoint_disable,
412
413	/*
414	* scheduling support
415	*/
416	.get_frame_number = ohci_get_frame,
417
418	/*
419	* root hub support
420	*/
421	.hub_status_data = ohci_hub_status_data,
422	.hub_control = ohci_hub_control,
8ad7fe16	423	#ifdef CONFIG_PM
0c0382e3 AS	424	.bus_suspend = ohci_bus_suspend,
0c0382e3 AS	425	.bus_resume = ohci_bus_resume,
1da177e4 LT	426	#endif
	427	.start_port_reset = ohci_start_port_reset,
	428	};
	429
	430	/-------------------------------------------------------------------------/
	431
	432	static int ohci_hcd_omap_drv_probe(struct device *dev)
	433	{
	434	return usb_hcd_omap_probe(&ohci_omap_hc_driver,
	435	to_platform_device(dev));
	436	}
	437
	438	static int ohci_hcd_omap_drv_remove(struct device *dev)
	439	{
	440	struct platform_device *pdev = to_platform_device(dev);
	441	struct usb_hcd *hcd = dev_get_drvdata(dev);
	442	struct ohci_hcd *ohci = hcd_to_ohci (hcd);
	443
	444	usb_hcd_omap_remove(hcd, pdev);
	445	if (ohci->transceiver) {
	446	(void) otg_set_host(ohci->transceiver, 0);
	447	put_device(ohci->transceiver->dev);
	448	}
	449	dev_set_drvdata(dev, NULL);
	450
	451	return 0;
	452	}
	453
	454	/-------------------------------------------------------------------------/
	455
	456	#ifdef CONFIG_PM
	457
9480e307	458	static int ohci_omap_suspend(struct device *dev, pm_message_t message)
1da177e4 LT	459	{
1da177e4 LT	460	struct ohci_hcd *ohci = hcd_to_ohci(dev_get_drvdata(dev));
f197b2c5 DB	461
	462	if (time_before(jiffies, ohci->next_statechange))
	463	msleep(5);
	464	ohci->next_statechange = jiffies;
	465
	466	omap_ohci_clock_power(0);
	467	ohci_to_hcd(ohci)->state = HC_STATE_SUSPENDED;
	468	dev->power.power_state = PMSG_SUSPEND;
	469	return 0;
1da177e4 LT	470	}
1da177e4 LT	471
9480e307	472	static int ohci_omap_resume(struct device *dev)
1da177e4 LT	473	{
1da177e4 LT	474	struct ohci_hcd *ohci = hcd_to_ohci(dev_get_drvdata(dev));
1da177e4	475
b404a5b0	476	if (time_before(jiffies, ohci->next_statechange))
	477	msleep(5);
	478	ohci->next_statechange = jiffies;
f197b2c5	479
b404a5b0	480	omap_ohci_clock_power(1);
f197b2c5 DB	481	dev->power.power_state = PMSG_ON;
	482	usb_hcd_resume_root_hub(dev_get_drvdata(dev));
	483	return 0;
1da177e4 LT	484	}
	485
	486	#endif
	487
	488	/-------------------------------------------------------------------------/
	489
	490	/*
	491	* Driver definition to register with the OMAP bus
	492	*/
	493	static struct device_driver ohci_hcd_omap_driver = {
	494	.name = "ohci",
	495	.bus = &platform_bus_type,
	496	.probe = ohci_hcd_omap_drv_probe,
	497	.remove = ohci_hcd_omap_drv_remove,
	498	#ifdef CONFIG_PM
	499	.suspend = ohci_omap_suspend,
	500	.resume = ohci_omap_resume,
	501	#endif
	502	};
	503
	504	static int __init ohci_hcd_omap_init (void)
	505	{
	506	printk (KERN_DEBUG "%s: " DRIVER_INFO " (OMAP)\n", hcd_name);
	507	if (usb_disabled())
	508	return -ENODEV;
	509
	510	pr_debug("%s: block sizes: ed %Zd td %Zd\n", hcd_name,
	511	sizeof (struct ed), sizeof (struct td));
	512
	513	return driver_register(&ohci_hcd_omap_driver);
	514	}
	515
	516	static void __exit ohci_hcd_omap_cleanup (void)
	517	{
	518	driver_unregister(&ohci_hcd_omap_driver);
	519	}
	520
	521	module_init (ohci_hcd_omap_init);
	522	module_exit (ohci_hcd_omap_cleanup);