[net-next-2.6.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 <linux/clk.h>

#include <mach/hardware.h>
#include <mach/pxa-regs.h>
#include <mach/pxa2xx-regs.h> /* FIXME: for PSSR */
#include <mach/ohci.h>

#define PXA_UHC_MAX_PORTNUM    3

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

static struct clk *usb_clk;

/*
  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 )
{
	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 );

		UHCRHDA |= RH_A_NPS;
	}

	return 0;
}

extern int usb_disabled(void);

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

static int pxa27x_start_hc(struct device *dev)
{
	int retval = 0;
	struct pxaohci_platform_data *inf;

	inf = dev->platform_data;

	clk_enable(usb_clk);

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

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

	if (inf->init)
		retval = inf->init(dev);

	if (retval < 0)
		return retval;

	UHCHR &= ~UHCHR_SSE;

	UHCHIE = (UHCHIE_UPRIE | UHCHIE_RWIE);

	/* Clear any OTG Pin Hold */
	if (cpu_is_pxa27x() && (PSSR & PSSR_OTGPH))
		PSSR |= PSSR_OTGPH;

	return 0;
}

static void pxa27x_stop_hc(struct device *dev)
{
	struct pxaohci_platform_data *inf;

	inf = dev->platform_data;

	if (inf->exit)
		inf->exit(dev);

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

	UHCCOMS |= 1;
	udelay(10);

	clk_disable(usb_clk);
}


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

/* 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 *pdev)
{
	int retval;
	struct usb_hcd *hcd;
	struct pxaohci_platform_data *inf;

	inf = pdev->dev.platform_data;

	if (!inf)
		return -ENODEV;

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

	usb_clk = clk_get(&pdev->dev, "USBCLK");
	if (IS_ERR(usb_clk))
		return PTR_ERR(usb_clk);

	hcd = usb_create_hcd (driver, &pdev->dev, "pxa27x");
	if (!hcd)
		return -ENOMEM;
	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)) {
		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;
	}

	if ((retval = pxa27x_start_hc(&pdev->dev)) < 0) {
		pr_debug("pxa27x_start_hc failed");
		goto err3;
	}

	/* Select Power Management Mode */
	pxa27x_ohci_select_pmm(inf->port_mode);

	if (inf->power_budget)
		hcd->power_budget = inf->power_budget;

	ohci_hcd_init(hcd_to_ohci(hcd));

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

	pxa27x_stop_hc(&pdev->dev);
 err3:
	iounmap(hcd->regs);
 err2:
	release_mem_region(hcd->rsrc_start, hcd->rsrc_len);
 err1:
	usb_put_hcd(hcd);
	clk_put(usb_clk);
	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 *pdev)
{
	usb_remove_hcd(hcd);
	pxa27x_stop_hc(&pdev->dev);
	iounmap(hcd->regs);
	release_mem_region(hcd->rsrc_start, hcd->rsrc_len);
	usb_put_hcd(hcd);
	clk_put(usb_clk);
}

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

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,
	.shutdown =		ohci_shutdown,

	/*
	 * 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,
	.hub_irq_enable =	ohci_rhsc_enable,
#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)
{
	pr_debug ("In ohci_hcd_pxa27x_drv_probe");

	if (usb_disabled())
		return -ENODEV;

	return usb_hcd_pxa27x_probe(&ohci_pxa27x_hc_driver, pdev);
}

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);
	platform_set_drvdata(pdev, NULL);
	return 0;
}

#ifdef	CONFIG_PM
static int ohci_hcd_pxa27x_drv_suspend(struct platform_device *pdev, pm_message_t state)
{
	struct usb_hcd *hcd = platform_get_drvdata(pdev);
	struct ohci_hcd *ohci = hcd_to_ohci(hcd);

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

	pxa27x_stop_hc(&pdev->dev);
	hcd->state = HC_STATE_SUSPENDED;

	return 0;
}

static int ohci_hcd_pxa27x_drv_resume(struct platform_device *pdev)
{
	struct usb_hcd *hcd = platform_get_drvdata(pdev);
	struct ohci_hcd *ohci = hcd_to_ohci(hcd);
	int status;

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

	if ((status = pxa27x_start_hc(&pdev->dev)) < 0)
		return status;

	ohci_finish_controller_resume(hcd);
	return 0;
}
#endif

/* work with hotplug and coldplug */
MODULE_ALIAS("platform:pxa27x-ohci");

static struct platform_driver ohci_hcd_pxa27x_driver = {
	.probe		= ohci_hcd_pxa27x_drv_probe,
	.remove		= ohci_hcd_pxa27x_drv_remove,
	.shutdown	= usb_hcd_platform_shutdown,
#ifdef CONFIG_PM
	.suspend	= ohci_hcd_pxa27x_drv_suspend,
	.resume		= ohci_hcd_pxa27x_drv_resume,
#endif
	.driver		= {
		.name	= "pxa27x-ohci",
		.owner	= THIS_MODULE,
	},
};
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>
a8bcf410	25	#include <linux/clk.h>
4fd5f826	26
a09e64fb RK	27	#include <mach/hardware.h>
	28	#include <mach/pxa-regs.h>
	29	#include <mach/pxa2xx-regs.h> /* FIXME: for PSSR */
	30	#include <mach/ohci.h>
1da177e4 LT	31
	32	#define PXA_UHC_MAX_PORTNUM 3
	33
	34	#define UHCRHPS(x) __REG2( 0x4C000050, (x)<<2 )
	35
a8bcf410	36	static struct clk *usb_clk;
a8bcf410	37
1da177e4 LT	38	/*
	39	PMM_NPS_MODE -- PMM Non-power switching mode
	40	Ports are powered continuously.
	41
	42	PMM_GLOBAL_MODE -- PMM global switching mode
	43	All ports are powered at the same time.
	44
	45	PMM_PERPORT_MODE -- PMM per port switching mode
	46	Ports are powered individually.
	47	*/
	48	static int pxa27x_ohci_select_pmm( int mode )
	49	{
1da177e4 LT	50	switch ( mode ) {
	51	case PMM_NPS_MODE:
	52	UHCRHDA \|= RH_A_NPS;
dd9048af	53	break;
1da177e4 LT	54	case PMM_GLOBAL_MODE:
	55	UHCRHDA &= ~(RH_A_NPS & RH_A_PSM);
	56	break;
	57	case PMM_PERPORT_MODE:
	58	UHCRHDA &= ~(RH_A_NPS);
	59	UHCRHDA \|= RH_A_PSM;
	60
	61	/* Set port power control mask bits, only 3 ports. */
	62	UHCRHDB \|= (0x7<<17);
	63	break;
	64	default:
	65	printk( KERN_ERR
dd9048af	66	"Invalid mode %d, set to non-power switch mode.\n",
1da177e4 LT	67	mode );
1da177e4 LT	68
1da177e4 LT	69	UHCRHDA \|= RH_A_NPS;
	70	}
	71
	72	return 0;
	73	}
	74
1da177e4 LT	75	extern int usb_disabled(void);
	76
	77	/-------------------------------------------------------------------------/
	78
81f280e2	79	static int pxa27x_start_hc(struct device *dev)
1da177e4	80	{
81f280e2 RP	81	int retval = 0;
	82	struct pxaohci_platform_data *inf;
	83
	84	inf = dev->platform_data;
	85
a8bcf410	86	clk_enable(usb_clk);
1da177e4 LT	87
	88	UHCHR \|= UHCHR_FHR;
	89	udelay(11);
	90	UHCHR &= ~UHCHR_FHR;
	91
	92	UHCHR \|= UHCHR_FSBIR;
	93	while (UHCHR & UHCHR_FSBIR)
	94	cpu_relax();
	95
81f280e2 RP	96	if (inf->init)
81f280e2 RP	97	retval = inf->init(dev);
155faf5e	98
81f280e2 RP	99	if (retval < 0)
81f280e2 RP	100	return retval;
1da177e4 LT	101
	102	UHCHR &= ~UHCHR_SSE;
	103
	104	UHCHIE = (UHCHIE_UPRIE \| UHCHIE_RWIE);
155faf5e DB	105
155faf5e DB	106	/* Clear any OTG Pin Hold */
d438ae57	107	if (cpu_is_pxa27x() && (PSSR & PSSR_OTGPH))
155faf5e	108	PSSR \|= PSSR_OTGPH;
81f280e2 RP	109
81f280e2 RP	110	return 0;
1da177e4 LT	111	}
1da177e4 LT	112
81f280e2	113	static void pxa27x_stop_hc(struct device *dev)
1da177e4	114	{
81f280e2 RP	115	struct pxaohci_platform_data *inf;
	116
	117	inf = dev->platform_data;
	118
	119	if (inf->exit)
	120	inf->exit(dev);
	121
1da177e4 LT	122	UHCHR \|= UHCHR_FHR;
	123	udelay(11);
	124	UHCHR &= ~UHCHR_FHR;
	125
	126	UHCCOMS \|= 1;
	127	udelay(10);
	128
a8bcf410	129	clk_disable(usb_clk);
1da177e4 LT	130	}
	131
	132
	133	/-------------------------------------------------------------------------/
	134
	135	/* configure so an HC device and id are always provided */
	136	/* always called with process context; sleeping is OK */
	137
	138
	139	/**
	140	* usb_hcd_pxa27x_probe - initialize pxa27x-based HCDs
	141	* Context: !in_interrupt()
	142	*
	143	* Allocates basic resources for this USB host controller, and
	144	* then invokes the start() method for the HCD associated with it
	145	* through the hotplug entry's driver_data.
	146	*
	147	*/
81f280e2	148	int usb_hcd_pxa27x_probe (const struct hc_driver driver, struct platform_device pdev)
1da177e4 LT	149	{
	150	int retval;
	151	struct usb_hcd *hcd;
81f280e2 RP	152	struct pxaohci_platform_data *inf;
	153
	154	inf = pdev->dev.platform_data;
1da177e4	155
81f280e2 RP	156	if (!inf)
	157	return -ENODEV;
	158
	159	if (pdev->resource[1].flags != IORESOURCE_IRQ) {
1da177e4 LT	160	pr_debug ("resource[1] is not IORESOURCE_IRQ");
	161	return -ENOMEM;
	162	}
	163
a8bcf410	164	usb_clk = clk_get(&pdev->dev, "USBCLK");
	165	if (IS_ERR(usb_clk))
	166	return PTR_ERR(usb_clk);
	167
81f280e2	168	hcd = usb_create_hcd (driver, &pdev->dev, "pxa27x");
1da177e4 LT	169	if (!hcd)
1da177e4 LT	170	return -ENOMEM;
81f280e2 RP	171	hcd->rsrc_start = pdev->resource[0].start;
81f280e2 RP	172	hcd->rsrc_len = pdev->resource[0].end - pdev->resource[0].start + 1;
1da177e4 LT	173
	174	if (!request_mem_region(hcd->rsrc_start, hcd->rsrc_len, hcd_name)) {
	175	pr_debug("request_mem_region failed");
	176	retval = -EBUSY;
	177	goto err1;
	178	}
	179
	180	hcd->regs = ioremap(hcd->rsrc_start, hcd->rsrc_len);
	181	if (!hcd->regs) {
	182	pr_debug("ioremap failed");
	183	retval = -ENOMEM;
	184	goto err2;
	185	}
	186
81f280e2 RP	187	if ((retval = pxa27x_start_hc(&pdev->dev)) < 0) {
	188	pr_debug("pxa27x_start_hc failed");
	189	goto err3;
	190	}
1da177e4 LT	191
1da177e4 LT	192	/* Select Power Management Mode */
81f280e2	193	pxa27x_ohci_select_pmm(inf->port_mode);
1da177e4	194
0c27c5d5 RP	195	if (inf->power_budget)
	196	hcd->power_budget = inf->power_budget;
	197
1da177e4 LT	198	ohci_hcd_init(hcd_to_ohci(hcd));
1da177e4 LT	199
d54b5caa	200	retval = usb_add_hcd(hcd, pdev->resource[1].start, IRQF_DISABLED);
1da177e4 LT	201	if (retval == 0)
	202	return retval;
	203
81f280e2 RP	204	pxa27x_stop_hc(&pdev->dev);
81f280e2 RP	205	err3:
1da177e4 LT	206	iounmap(hcd->regs);
	207	err2:
	208	release_mem_region(hcd->rsrc_start, hcd->rsrc_len);
	209	err1:
	210	usb_put_hcd(hcd);
a8bcf410	211	clk_put(usb_clk);
1da177e4 LT	212	return retval;
	213	}
	214
	215
	216	/* may be called without controller electrically present */
	217	/* may be called with controller, bus, and devices active */
	218
	219	/**
	220	* usb_hcd_pxa27x_remove - shutdown processing for pxa27x-based HCDs
	221	* @dev: USB Host Controller being removed
	222	* Context: !in_interrupt()
	223	*
	224	* Reverses the effect of usb_hcd_pxa27x_probe(), first invoking
	225	* the HCD's stop() method. It is always called from a thread
	226	* context, normally "rmmod", "apmd", or something similar.
	227	*
	228	*/
81f280e2	229	void usb_hcd_pxa27x_remove (struct usb_hcd hcd, struct platform_device pdev)
1da177e4 LT	230	{
1da177e4 LT	231	usb_remove_hcd(hcd);
81f280e2	232	pxa27x_stop_hc(&pdev->dev);
1da177e4 LT	233	iounmap(hcd->regs);
	234	release_mem_region(hcd->rsrc_start, hcd->rsrc_len);
	235	usb_put_hcd(hcd);
a8bcf410	236	clk_put(usb_clk);
1da177e4 LT	237	}
	238
	239	/-------------------------------------------------------------------------/
	240
	241	static int __devinit
	242	ohci_pxa27x_start (struct usb_hcd *hcd)
	243	{
	244	struct ohci_hcd *ohci = hcd_to_ohci (hcd);
	245	int ret;
	246
	247	ohci_dbg (ohci, "ohci_pxa27x_start, ohci:%p", ohci);
	248
fdd13b36 DB	249	/* The value of NDP in roothub_a is incorrect on this hardware */
	250	ohci->num_ports = 3;
	251
1da177e4 LT	252	if ((ret = ohci_init(ohci)) < 0)
	253	return ret;
	254
	255	if ((ret = ohci_run (ohci)) < 0) {
	256	err ("can't start %s", hcd->self.bus_name);
	257	ohci_stop (hcd);
	258	return ret;
	259	}
	260
	261	return 0;
	262	}
	263
	264	/-------------------------------------------------------------------------/
	265
	266	static const struct hc_driver ohci_pxa27x_hc_driver = {
	267	.description = hcd_name,
	268	.product_desc = "PXA27x OHCI",
	269	.hcd_priv_size = sizeof(struct ohci_hcd),
	270
	271	/*
	272	* generic hardware linkage
	273	*/
	274	.irq = ohci_irq,
	275	.flags = HCD_USB11 \| HCD_MEMORY,
	276
	277	/*
	278	* basic lifecycle operations
	279	*/
	280	.start = ohci_pxa27x_start,
	281	.stop = ohci_stop,
dd9048af	282	.shutdown = ohci_shutdown,
1da177e4 LT	283
	284	/*
	285	* managing i/o requests and associated device resources
	286	*/
	287	.urb_enqueue = ohci_urb_enqueue,
	288	.urb_dequeue = ohci_urb_dequeue,
	289	.endpoint_disable = ohci_endpoint_disable,
	290
	291	/*
	292	* scheduling support
	293	*/
	294	.get_frame_number = ohci_get_frame,
	295
	296	/*
	297	* root hub support
	298	*/
	299	.hub_status_data = ohci_hub_status_data,
	300	.hub_control = ohci_hub_control,
09ca8adb	301	.hub_irq_enable = ohci_rhsc_enable,
8ad7fe16	302	#ifdef CONFIG_PM
0c0382e3 AS	303	.bus_suspend = ohci_bus_suspend,
0c0382e3 AS	304	.bus_resume = ohci_bus_resume,
1da177e4	305	#endif
9293677a	306	.start_port_reset = ohci_start_port_reset,
1da177e4 LT	307	};
	308
	309	/-------------------------------------------------------------------------/
	310
3ae5eaec	311	static int ohci_hcd_pxa27x_drv_probe(struct platform_device *pdev)
1da177e4	312	{
1da177e4 LT	313	pr_debug ("In ohci_hcd_pxa27x_drv_probe");
	314
	315	if (usb_disabled())
	316	return -ENODEV;
	317
81f280e2	318	return usb_hcd_pxa27x_probe(&ohci_pxa27x_hc_driver, pdev);
1da177e4 LT	319	}
1da177e4 LT	320
3ae5eaec	321	static int ohci_hcd_pxa27x_drv_remove(struct platform_device *pdev)
1da177e4	322	{
3ae5eaec	323	struct usb_hcd *hcd = platform_get_drvdata(pdev);
1da177e4 LT	324
1da177e4 LT	325	usb_hcd_pxa27x_remove(hcd, pdev);
a5e36d20	326	platform_set_drvdata(pdev, NULL);
1da177e4 LT	327	return 0;
	328	}
	329
2e1dcc16 RP	330	#ifdef CONFIG_PM
2e1dcc16 RP	331	static int ohci_hcd_pxa27x_drv_suspend(struct platform_device *pdev, pm_message_t state)
1da177e4	332	{
a5e36d20 RP	333	struct usb_hcd *hcd = platform_get_drvdata(pdev);
a5e36d20 RP	334	struct ohci_hcd *ohci = hcd_to_ohci(hcd);
2e1dcc16 RP	335
	336	if (time_before(jiffies, ohci->next_statechange))
	337	msleep(5);
	338	ohci->next_statechange = jiffies;
	339
	340	pxa27x_stop_hc(&pdev->dev);
a5e36d20	341	hcd->state = HC_STATE_SUSPENDED;
1da177e4 LT	342
	343	return 0;
	344	}
	345
2e1dcc16	346	static int ohci_hcd_pxa27x_drv_resume(struct platform_device *pdev)
1da177e4	347	{
a5e36d20 RP	348	struct usb_hcd *hcd = platform_get_drvdata(pdev);
a5e36d20 RP	349	struct ohci_hcd *ohci = hcd_to_ohci(hcd);
2e1dcc16 RP	350	int status;
	351
	352	if (time_before(jiffies, ohci->next_statechange))
	353	msleep(5);
	354	ohci->next_statechange = jiffies;
	355
	356	if ((status = pxa27x_start_hc(&pdev->dev)) < 0)
	357	return status;
	358
43bbb7e0	359	ohci_finish_controller_resume(hcd);
1da177e4 LT	360	return 0;
1da177e4 LT	361	}
2e1dcc16	362	#endif
1da177e4	363
f4fce61d KS	364	/* work with hotplug and coldplug */
f4fce61d KS	365	MODULE_ALIAS("platform:pxa27x-ohci");
1da177e4	366
3ae5eaec	367	static struct platform_driver ohci_hcd_pxa27x_driver = {
1da177e4 LT	368	.probe = ohci_hcd_pxa27x_drv_probe,
1da177e4 LT	369	.remove = ohci_hcd_pxa27x_drv_remove,
dd9048af	370	.shutdown = usb_hcd_platform_shutdown,
2e1dcc16	371	#ifdef CONFIG_PM
dd9048af	372	.suspend = ohci_hcd_pxa27x_drv_suspend,
3ae5eaec	373	.resume = ohci_hcd_pxa27x_drv_resume,
2e1dcc16	374	#endif
3ae5eaec RK	375	.driver = {
3ae5eaec RK	376	.name = "pxa27x-ohci",
f4fce61d	377	.owner = THIS_MODULE,
3ae5eaec	378	},
1da177e4 LT	379	};
1da177e4 LT	380