[mirror_ubuntu-zesty-kernel.git] / drivers / usb / host / ohci-pxa27x.c

/*
 * OHCI HCD (Host Controller Driver) for USB.
 *
 * (C) Copyright 1999 Roman Weissgaerber <weissg@vienna.at>
 * (C) Copyright 2000-2002 David Brownell <dbrownell@users.sourceforge.net>
 * (C) Copyright 2002 Hewlett-Packard Company
 *
 * Bus Glue for pxa27x
 *
 * Written by Christopher Hoover <ch@hpl.hp.com>
 * Based on fragments of previous driver by Russell King et al.
 *
 * Modified for LH7A404 from ohci-sa1111.c
 *  by Durgesh Pattamatta <pattamattad@sharpsec.com>
 *
 * Modified for pxa27x from ohci-lh7a404.c
 *  by Nick Bane <nick@cecomputing.co.uk> 26-8-2004
 *
 * This file is licenced under the GPL.
 */

#include <linux/device.h>
#include <linux/signal.h>
#include <linux/platform_device.h>

#include <asm/mach-types.h>
#include <asm/hardware.h>
#include <asm/arch/pxa-regs.h>


#define PMM_NPS_MODE           1
#define PMM_GLOBAL_MODE        2
#define PMM_PERPORT_MODE       3

#define PXA_UHC_MAX_PORTNUM    3

#define UHCRHPS(x)              __REG2( 0x4C000050, (x)<<2 )

static int pxa27x_ohci_pmm_state;

/*
  PMM_NPS_MODE -- PMM Non-power switching mode
      Ports are powered continuously.

  PMM_GLOBAL_MODE -- PMM global switching mode
      All ports are powered at the same time.

  PMM_PERPORT_MODE -- PMM per port switching mode
      Ports are powered individually.
 */
static int pxa27x_ohci_select_pmm( int mode )
{
	pxa27x_ohci_pmm_state = mode;

	switch ( mode ) {
	case PMM_NPS_MODE:
		UHCRHDA |= RH_A_NPS;
		break; 
	case PMM_GLOBAL_MODE:
		UHCRHDA &= ~(RH_A_NPS & RH_A_PSM);
		break;
	case PMM_PERPORT_MODE:
		UHCRHDA &= ~(RH_A_NPS);
		UHCRHDA |= RH_A_PSM;

		/* Set port power control mask bits, only 3 ports. */
		UHCRHDB |= (0x7<<17);
		break;
	default:
		printk( KERN_ERR
			"Invalid mode %d, set to non-power switch mode.\n", 
			mode );

		pxa27x_ohci_pmm_state = PMM_NPS_MODE;
		UHCRHDA |= RH_A_NPS;
	}

	return 0;
}

extern int usb_disabled(void);

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

static void pxa27x_start_hc(struct platform_device *dev)
{
	pxa_set_cken(CKEN10_USBHOST, 1);

	UHCHR |= UHCHR_FHR;
	udelay(11);
	UHCHR &= ~UHCHR_FHR;

	UHCHR |= UHCHR_FSBIR;
	while (UHCHR & UHCHR_FSBIR)
		cpu_relax();

	/* This could be properly abstracted away through the
	   device data the day more machines are supported and
	   their differences can be figured out correctly. */
	if (machine_is_mainstone()) {
		/* setup Port1 GPIO pin. */
		pxa_gpio_mode( 88 | GPIO_ALT_FN_1_IN);	/* USBHPWR1 */
		pxa_gpio_mode( 89 | GPIO_ALT_FN_2_OUT);	/* USBHPEN1 */

		/* Set the Power Control Polarity Low and Power Sense
		   Polarity Low to active low. Supply power to USB ports. */
		UHCHR = (UHCHR | UHCHR_PCPL | UHCHR_PSPL) &
			~(UHCHR_SSEP1 | UHCHR_SSEP2 | UHCHR_SSEP3 | UHCHR_SSE);

		pxa27x_ohci_pmm_state = PMM_PERPORT_MODE;
	}

	UHCHR &= ~UHCHR_SSE;

	UHCHIE = (UHCHIE_UPRIE | UHCHIE_RWIE);

	/* Clear any OTG Pin Hold */
	if (PSSR & PSSR_OTGPH)
		PSSR |= PSSR_OTGPH;
}

static void pxa27x_stop_hc(struct platform_device *dev)
{
	UHCHR |= UHCHR_FHR;
	udelay(11);
	UHCHR &= ~UHCHR_FHR;

	UHCCOMS |= 1;
	udelay(10);

	pxa_set_cken(CKEN10_USBHOST, 0);
}


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

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


/**
 * usb_hcd_pxa27x_probe - initialize pxa27x-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_pxa27x_probe (const struct hc_driver *driver,
			  struct platform_device *dev)
{
	int retval;
	struct usb_hcd *hcd;

	if (dev->resource[1].flags != IORESOURCE_IRQ) {
		pr_debug ("resource[1] is not IORESOURCE_IRQ");
		return -ENOMEM;
	}

	hcd = usb_create_hcd (driver, &dev->dev, "pxa27x");
	if (!hcd)
		return -ENOMEM;
	hcd->rsrc_start = dev->resource[0].start;
	hcd->rsrc_len = dev->resource[0].end - dev->resource[0].start + 1;

	if (!request_mem_region(hcd->rsrc_start, hcd->rsrc_len, hcd_name)) {
		pr_debug("request_mem_region failed");
		retval = -EBUSY;
		goto err1;
	}

	hcd->regs = ioremap(hcd->rsrc_start, hcd->rsrc_len);
	if (!hcd->regs) {
		pr_debug("ioremap failed");
		retval = -ENOMEM;
		goto err2;
	}

	pxa27x_start_hc(dev);

	/* Select Power Management Mode */
	pxa27x_ohci_select_pmm(pxa27x_ohci_pmm_state);

	ohci_hcd_init(hcd_to_ohci(hcd));

	retval = usb_add_hcd(hcd, dev->resource[1].start, SA_INTERRUPT);
	if (retval == 0)
		return retval;

	pxa27x_stop_hc(dev);
	iounmap(hcd->regs);
 err2:
	release_mem_region(hcd->rsrc_start, hcd->rsrc_len);
 err1:
	usb_put_hcd(hcd);
	return retval;
}


/* may be called without controller electrically present */
/* may be called with controller, bus, and devices active */

/**
 * usb_hcd_pxa27x_remove - shutdown processing for pxa27x-based HCDs
 * @dev: USB Host Controller being removed
 * Context: !in_interrupt()
 *
 * Reverses the effect of usb_hcd_pxa27x_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_pxa27x_remove (struct usb_hcd *hcd, struct platform_device *dev)
{
	usb_remove_hcd(hcd);
	pxa27x_stop_hc(dev);
	iounmap(hcd->regs);
	release_mem_region(hcd->rsrc_start, hcd->rsrc_len);
	usb_put_hcd(hcd);
}

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

static int __devinit
ohci_pxa27x_start (struct usb_hcd *hcd)
{
	struct ohci_hcd	*ohci = hcd_to_ohci (hcd);
	int		ret;

	ohci_dbg (ohci, "ohci_pxa27x_start, ohci:%p", ohci);

	/* The value of NDP in roothub_a is incorrect on this hardware */
	ohci->num_ports = 3;

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

	if ((ret = ohci_run (ohci)) < 0) {
		err ("can't start %s", hcd->self.bus_name);
		ohci_stop (hcd);
		return ret;
	}

	return 0;
}

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

static const struct hc_driver ohci_pxa27x_hc_driver = {
	.description =		hcd_name,
	.product_desc =		"PXA27x OHCI",
	.hcd_priv_size =	sizeof(struct ohci_hcd),

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

	/*
	 * basic lifecycle operations
	 */
	.start =		ohci_pxa27x_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_pxa27x_drv_probe(struct platform_device *pdev)
{
	int ret;

	pr_debug ("In ohci_hcd_pxa27x_drv_probe");

	if (usb_disabled())
		return -ENODEV;

	ret = usb_hcd_pxa27x_probe(&ohci_pxa27x_hc_driver, pdev);
	return ret;
}

static int ohci_hcd_pxa27x_drv_remove(struct platform_device *pdev)
{
	struct usb_hcd *hcd = platform_get_drvdata(pdev);

	usb_hcd_pxa27x_remove(hcd, pdev);
	return 0;
}

static int ohci_hcd_pxa27x_drv_suspend(struct platform_device *dev, pm_message_t state)
{
//	struct usb_hcd *hcd = platform_get_drvdata(dev);
	printk("%s: not implemented yet\n", __FUNCTION__);

	return 0;
}

static int ohci_hcd_pxa27x_drv_resume(struct platform_device *dev)
{
//	struct usb_hcd *hcd = platform_get_drvdata(dev);
	printk("%s: not implemented yet\n", __FUNCTION__);

	return 0;
}


static struct platform_driver ohci_hcd_pxa27x_driver = {
	.probe		= ohci_hcd_pxa27x_drv_probe,
	.remove		= ohci_hcd_pxa27x_drv_remove,
	.suspend	= ohci_hcd_pxa27x_drv_suspend, 
	.resume		= ohci_hcd_pxa27x_drv_resume,
	.driver		= {
		.name	= "pxa27x-ohci",
	},
};

static int __init ohci_hcd_pxa27x_init (void)
{
	pr_debug (DRIVER_INFO " (pxa27x)");
	pr_debug ("block sizes: ed %d td %d\n",
		sizeof (struct ed), sizeof (struct td));

	return platform_driver_register(&ohci_hcd_pxa27x_driver);
}

static void __exit ohci_hcd_pxa27x_cleanup (void)
{
	platform_driver_unregister(&ohci_hcd_pxa27x_driver);
}

module_init (ohci_hcd_pxa27x_init);
module_exit (ohci_hcd_pxa27x_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 2000-2002 David Brownell <dbrownell@users.sourceforge.net>
	6	* (C) Copyright 2002 Hewlett-Packard Company
	7	*
	8	* Bus Glue for pxa27x
	9	*
	10	* Written by Christopher Hoover <ch@hpl.hp.com>
	11	* Based on fragments of previous driver by Russell King et al.
	12	*
	13	* Modified for LH7A404 from ohci-sa1111.c
	14	* by Durgesh Pattamatta <pattamattad@sharpsec.com>
	15	*
	16	* Modified for pxa27x from ohci-lh7a404.c
	17	* by Nick Bane <nick@cecomputing.co.uk> 26-8-2004
	18	*
	19	* This file is licenced under the GPL.
	20	*/
	21
	22	#include <linux/device.h>
4e57b681	23	#include <linux/signal.h>
d052d1be	24	#include <linux/platform_device.h>
4fd5f826	25
1da177e4 LT	26	#include <asm/mach-types.h>
	27	#include <asm/hardware.h>
	28	#include <asm/arch/pxa-regs.h>
	29
	30
	31	#define PMM_NPS_MODE 1
	32	#define PMM_GLOBAL_MODE 2
	33	#define PMM_PERPORT_MODE 3
	34
	35	#define PXA_UHC_MAX_PORTNUM 3
	36
	37	#define UHCRHPS(x) __REG2( 0x4C000050, (x)<<2 )
	38
	39	static int pxa27x_ohci_pmm_state;
	40
	41	/*
	42	PMM_NPS_MODE -- PMM Non-power switching mode
	43	Ports are powered continuously.
	44
	45	PMM_GLOBAL_MODE -- PMM global switching mode
	46	All ports are powered at the same time.
	47
	48	PMM_PERPORT_MODE -- PMM per port switching mode
	49	Ports are powered individually.
	50	*/
	51	static int pxa27x_ohci_select_pmm( int mode )
	52	{
	53	pxa27x_ohci_pmm_state = mode;
	54
	55	switch ( mode ) {
	56	case PMM_NPS_MODE:
	57	UHCRHDA \|= RH_A_NPS;
	58	break;
	59	case PMM_GLOBAL_MODE:
	60	UHCRHDA &= ~(RH_A_NPS & RH_A_PSM);
	61	break;
	62	case PMM_PERPORT_MODE:
	63	UHCRHDA &= ~(RH_A_NPS);
	64	UHCRHDA \|= RH_A_PSM;
	65
	66	/* Set port power control mask bits, only 3 ports. */
	67	UHCRHDB \|= (0x7<<17);
	68	break;
	69	default:
	70	printk( KERN_ERR
	71	"Invalid mode %d, set to non-power switch mode.\n",
	72	mode );
	73
	74	pxa27x_ohci_pmm_state = PMM_NPS_MODE;
	75	UHCRHDA \|= RH_A_NPS;
	76	}
	77
	78	return 0;
	79	}
	80
1da177e4 LT	81	extern int usb_disabled(void);
	82
	83	/-------------------------------------------------------------------------/
	84
	85	static void pxa27x_start_hc(struct platform_device *dev)
	86	{
	87	pxa_set_cken(CKEN10_USBHOST, 1);
	88
	89	UHCHR \|= UHCHR_FHR;
	90	udelay(11);
	91	UHCHR &= ~UHCHR_FHR;
	92
	93	UHCHR \|= UHCHR_FSBIR;
	94	while (UHCHR & UHCHR_FSBIR)
	95	cpu_relax();
	96
	97	/* This could be properly abstracted away through the
	98	device data the day more machines are supported and
	99	their differences can be figured out correctly. */
	100	if (machine_is_mainstone()) {
	101	/* setup Port1 GPIO pin. */
	102	pxa_gpio_mode( 88 \| GPIO_ALT_FN_1_IN); /* USBHPWR1 */
	103	pxa_gpio_mode( 89 \| GPIO_ALT_FN_2_OUT); /* USBHPEN1 */
	104
	105	/* Set the Power Control Polarity Low and Power Sense
	106	Polarity Low to active low. Supply power to USB ports. */
	107	UHCHR = (UHCHR \| UHCHR_PCPL \| UHCHR_PSPL) &
	108	~(UHCHR_SSEP1 \| UHCHR_SSEP2 \| UHCHR_SSEP3 \| UHCHR_SSE);
155faf5e DB	109
155faf5e DB	110	pxa27x_ohci_pmm_state = PMM_PERPORT_MODE;
1da177e4 LT	111	}
	112
	113	UHCHR &= ~UHCHR_SSE;
	114
	115	UHCHIE = (UHCHIE_UPRIE \| UHCHIE_RWIE);
155faf5e DB	116
	117	/* Clear any OTG Pin Hold */
	118	if (PSSR & PSSR_OTGPH)
	119	PSSR \|= PSSR_OTGPH;
1da177e4 LT	120	}
	121
	122	static void pxa27x_stop_hc(struct platform_device *dev)
	123	{
	124	UHCHR \|= UHCHR_FHR;
	125	udelay(11);
	126	UHCHR &= ~UHCHR_FHR;
	127
	128	UHCCOMS \|= 1;
	129	udelay(10);
	130
	131	pxa_set_cken(CKEN10_USBHOST, 0);
	132	}
	133
	134
	135	/-------------------------------------------------------------------------/
	136
	137	/* configure so an HC device and id are always provided */
	138	/* always called with process context; sleeping is OK */
	139
	140
	141	/**
	142	* usb_hcd_pxa27x_probe - initialize pxa27x-based HCDs
	143	* Context: !in_interrupt()
	144	*
	145	* Allocates basic resources for this USB host controller, and
	146	* then invokes the start() method for the HCD associated with it
	147	* through the hotplug entry's driver_data.
	148	*
	149	*/
	150	int usb_hcd_pxa27x_probe (const struct hc_driver *driver,
	151	struct platform_device *dev)
	152	{
	153	int retval;
	154	struct usb_hcd *hcd;
	155
	156	if (dev->resource[1].flags != IORESOURCE_IRQ) {
	157	pr_debug ("resource[1] is not IORESOURCE_IRQ");
	158	return -ENOMEM;
	159	}
	160
	161	hcd = usb_create_hcd (driver, &dev->dev, "pxa27x");
	162	if (!hcd)
	163	return -ENOMEM;
	164	hcd->rsrc_start = dev->resource[0].start;
	165	hcd->rsrc_len = dev->resource[0].end - dev->resource[0].start + 1;
	166
	167	if (!request_mem_region(hcd->rsrc_start, hcd->rsrc_len, hcd_name)) {
	168	pr_debug("request_mem_region failed");
	169	retval = -EBUSY;
	170	goto err1;
	171	}
	172
	173	hcd->regs = ioremap(hcd->rsrc_start, hcd->rsrc_len);
	174	if (!hcd->regs) {
	175	pr_debug("ioremap failed");
	176	retval = -ENOMEM;
	177	goto err2;
	178	}
	179
	180	pxa27x_start_hc(dev);
	181
	182	/* Select Power Management Mode */
155faf5e	183	pxa27x_ohci_select_pmm(pxa27x_ohci_pmm_state);
1da177e4 LT	184
	185	ohci_hcd_init(hcd_to_ohci(hcd));
	186
	187	retval = usb_add_hcd(hcd, dev->resource[1].start, SA_INTERRUPT);
	188	if (retval == 0)
	189	return retval;
	190
	191	pxa27x_stop_hc(dev);
	192	iounmap(hcd->regs);
	193	err2:
	194	release_mem_region(hcd->rsrc_start, hcd->rsrc_len);
	195	err1:
	196	usb_put_hcd(hcd);
	197	return retval;
	198	}
	199
	200
	201	/* may be called without controller electrically present */
	202	/* may be called with controller, bus, and devices active */
	203
	204	/**
	205	* usb_hcd_pxa27x_remove - shutdown processing for pxa27x-based HCDs
	206	* @dev: USB Host Controller being removed
	207	* Context: !in_interrupt()
	208	*
	209	* Reverses the effect of usb_hcd_pxa27x_probe(), first invoking
	210	* the HCD's stop() method. It is always called from a thread
	211	* context, normally "rmmod", "apmd", or something similar.
	212	*
	213	*/
	214	void usb_hcd_pxa27x_remove (struct usb_hcd hcd, struct platform_device dev)
	215	{
	216	usb_remove_hcd(hcd);
	217	pxa27x_stop_hc(dev);
	218	iounmap(hcd->regs);
	219	release_mem_region(hcd->rsrc_start, hcd->rsrc_len);
	220	usb_put_hcd(hcd);
	221	}
	222
	223	/-------------------------------------------------------------------------/
	224
	225	static int __devinit
	226	ohci_pxa27x_start (struct usb_hcd *hcd)
	227	{
	228	struct ohci_hcd *ohci = hcd_to_ohci (hcd);
	229	int ret;
	230
	231	ohci_dbg (ohci, "ohci_pxa27x_start, ohci:%p", ohci);
	232
fdd13b36 DB	233	/* The value of NDP in roothub_a is incorrect on this hardware */
	234	ohci->num_ports = 3;
	235
1da177e4 LT	236	if ((ret = ohci_init(ohci)) < 0)
	237	return ret;
	238
	239	if ((ret = ohci_run (ohci)) < 0) {
	240	err ("can't start %s", hcd->self.bus_name);
	241	ohci_stop (hcd);
	242	return ret;
	243	}
	244
	245	return 0;
	246	}
	247
	248	/-------------------------------------------------------------------------/
	249
	250	static const struct hc_driver ohci_pxa27x_hc_driver = {
	251	.description = hcd_name,
	252	.product_desc = "PXA27x OHCI",
	253	.hcd_priv_size = sizeof(struct ohci_hcd),
	254
	255	/*
	256	* generic hardware linkage
	257	*/
	258	.irq = ohci_irq,
	259	.flags = HCD_USB11 \| HCD_MEMORY,
	260
	261	/*
	262	* basic lifecycle operations
	263	*/
	264	.start = ohci_pxa27x_start,
	265	.stop = ohci_stop,
	266
	267	/*
	268	* managing i/o requests and associated device resources
	269	*/
	270	.urb_enqueue = ohci_urb_enqueue,
	271	.urb_dequeue = ohci_urb_dequeue,
	272	.endpoint_disable = ohci_endpoint_disable,
	273
	274	/*
	275	* scheduling support
	276	*/
	277	.get_frame_number = ohci_get_frame,
	278
	279	/*
	280	* root hub support
	281	*/
	282	.hub_status_data = ohci_hub_status_data,
	283	.hub_control = ohci_hub_control,
8ad7fe16	284	#ifdef CONFIG_PM
0c0382e3 AS	285	.bus_suspend = ohci_bus_suspend,
0c0382e3 AS	286	.bus_resume = ohci_bus_resume,
1da177e4	287	#endif
9293677a	288	.start_port_reset = ohci_start_port_reset,
1da177e4 LT	289	};
	290
	291	/-------------------------------------------------------------------------/
	292
3ae5eaec	293	static int ohci_hcd_pxa27x_drv_probe(struct platform_device *pdev)
1da177e4	294	{
1da177e4 LT	295	int ret;
	296
	297	pr_debug ("In ohci_hcd_pxa27x_drv_probe");
	298
	299	if (usb_disabled())
	300	return -ENODEV;
	301
	302	ret = usb_hcd_pxa27x_probe(&ohci_pxa27x_hc_driver, pdev);
	303	return ret;
	304	}
	305
3ae5eaec	306	static int ohci_hcd_pxa27x_drv_remove(struct platform_device *pdev)
1da177e4	307	{
3ae5eaec	308	struct usb_hcd *hcd = platform_get_drvdata(pdev);
1da177e4 LT	309
	310	usb_hcd_pxa27x_remove(hcd, pdev);
	311	return 0;
	312	}
	313
3ae5eaec	314	static int ohci_hcd_pxa27x_drv_suspend(struct platform_device *dev, pm_message_t state)
1da177e4	315	{
3ae5eaec	316	// struct usb_hcd *hcd = platform_get_drvdata(dev);
1da177e4 LT	317	printk("%s: not implemented yet\n", __FUNCTION__);
	318
	319	return 0;
	320	}
	321
3ae5eaec	322	static int ohci_hcd_pxa27x_drv_resume(struct platform_device *dev)
1da177e4	323	{
3ae5eaec	324	// struct usb_hcd *hcd = platform_get_drvdata(dev);
1da177e4 LT	325	printk("%s: not implemented yet\n", __FUNCTION__);
	326
	327	return 0;
	328	}
	329
	330
3ae5eaec	331	static struct platform_driver ohci_hcd_pxa27x_driver = {
1da177e4 LT	332	.probe = ohci_hcd_pxa27x_drv_probe,
	333	.remove = ohci_hcd_pxa27x_drv_remove,
	334	.suspend = ohci_hcd_pxa27x_drv_suspend,
3ae5eaec RK	335	.resume = ohci_hcd_pxa27x_drv_resume,
	336	.driver = {
	337	.name = "pxa27x-ohci",
	338	},
1da177e4 LT	339	};
	340
	341	static int __init ohci_hcd_pxa27x_init (void)
	342	{
	343	pr_debug (DRIVER_INFO " (pxa27x)");
	344	pr_debug ("block sizes: ed %d td %d\n",
	345	sizeof (struct ed), sizeof (struct td));
	346
3ae5eaec	347	return platform_driver_register(&ohci_hcd_pxa27x_driver);
1da177e4 LT	348	}
	349
	350	static void __exit ohci_hcd_pxa27x_cleanup (void)
	351	{
3ae5eaec	352	platform_driver_unregister(&ohci_hcd_pxa27x_driver);
1da177e4 LT	353	}
	354
	355	module_init (ohci_hcd_pxa27x_init);
	356	module_exit (ohci_hcd_pxa27x_cleanup);