[deliverable/linux.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 <linux/signal.h>	/* SA_INTERRUPT */
#include <linux/jiffies.h>

#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",
	.owner		= THIS_MODULE,
	.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
4e57b681 TS	17	#include <linux/signal.h> /* SA_INTERRUPT */
	18	#include <linux/jiffies.h>
	19
1da177e4 LT	20	#include <asm/hardware.h>
	21	#include <asm/io.h>
	22	#include <asm/mach-types.h>
	23
1da177e4 LT	24	#include <asm/arch/mux.h>
	25	#include <asm/arch/irqs.h>
	26	#include <asm/arch/gpio.h>
	27	#include <asm/arch/fpga.h>
	28	#include <asm/arch/usb.h>
	29	#include <asm/hardware/clock.h>
	30
	31
	32	/* OMAP-1510 OHCI has its own MMU for DMA */
	33	#define OMAP1510_LB_MEMSIZE 32 /* Should be same as SDRAM size */
	34	#define OMAP1510_LB_CLOCK_DIV 0xfffec10c
	35	#define OMAP1510_LB_MMU_CTL 0xfffec208
	36	#define OMAP1510_LB_MMU_LCK 0xfffec224
	37	#define OMAP1510_LB_MMU_LD_TLB 0xfffec228
	38	#define OMAP1510_LB_MMU_CAM_H 0xfffec22c
	39	#define OMAP1510_LB_MMU_CAM_L 0xfffec230
	40	#define OMAP1510_LB_MMU_RAM_H 0xfffec234
	41	#define OMAP1510_LB_MMU_RAM_L 0xfffec238
	42
	43
	44	#ifndef CONFIG_ARCH_OMAP
	45	#error "This file is OMAP bus glue. CONFIG_OMAP must be defined."
	46	#endif
	47
	48	#ifdef CONFIG_TPS65010
	49	#include <asm/arch/tps65010.h>
	50	#else
	51
	52	#define LOW 0
	53	#define HIGH 1
	54
	55	#define GPIO1 1
	56
	57	static inline int tps65010_set_gpio_out_value(unsigned gpio, unsigned value)
	58	{
	59	return 0;
	60	}
	61
	62	#endif
	63
	64	extern int usb_disabled(void);
	65	extern int ocpi_enable(void);
	66
	67	static struct clk *usb_host_ck;
	68
	69	static void omap_ohci_clock_power(int on)
	70	{
	71	if (on) {
	72	clk_enable(usb_host_ck);
	73	/* guesstimate for T5 == 1x 32K clock + APLL lock time */
	74	udelay(100);
	75	} else {
	76	clk_disable(usb_host_ck);
	77	}
	78	}
	79
	80	/*
	81	* Board specific gang-switched transceiver power on/off.
	82	* NOTE: OSK supplies power from DC, not battery.
	83	*/
	84	static int omap_ohci_transceiver_power(int on)
	85	{
	86	if (on) {
	87	if (machine_is_omap_innovator() && cpu_is_omap1510())
88	fpga_write(fpga_read(INNOVATOR_FPGA_CAM_USB_CONTROL)
89	\| ((1 << 5/usb1/) \| (1 << 3/usb2/)),
90	INNOVATOR_FPGA_CAM_USB_CONTROL);
91	else if (machine_is_omap_osk())
92	tps65010_set_gpio_out_value(GPIO1, LOW);
93	} else {
94	if (machine_is_omap_innovator() && cpu_is_omap1510())
95	fpga_write(fpga_read(INNOVATOR_FPGA_CAM_USB_CONTROL)
96	& ~((1 << 5/usb1/) \| (1 << 3/usb2/)),
97	INNOVATOR_FPGA_CAM_USB_CONTROL);
98	else if (machine_is_omap_osk())
99	tps65010_set_gpio_out_value(GPIO1, HIGH);
100	}
101
102	return 0;
103	}
104
105	/*
106	* OMAP-1510 specific Local Bus clock on/off
107	*/
108	static int omap_1510_local_bus_power(int on)
109	{
110	if (on) {
111	omap_writel((1 << 1) \| (1 << 0), OMAP1510_LB_MMU_CTL);
112	udelay(200);
113	} else {
114	omap_writel(0, OMAP1510_LB_MMU_CTL);
115	}
116
117	return 0;
118	}
119
120	/*
121	* OMAP-1510 specific Local Bus initialization
122	* NOTE: This assumes 32MB memory size in OMAP1510LB_MEMSIZE.
123	* See also arch/mach-omap/memory.h for __virt_to_dma() and
124	* __dma_to_virt() which need to match with the physical
125	* Local Bus address below.
126	*/
127	static int omap_1510_local_bus_init(void)
128	{
129	unsigned int tlb;
130	unsigned long lbaddr, physaddr;
131
132	omap_writel((omap_readl(OMAP1510_LB_CLOCK_DIV) & 0xfffffff8) \| 0x4,
133	OMAP1510_LB_CLOCK_DIV);
134
135	/* Configure the Local Bus MMU table */
136	for (tlb = 0; tlb < OMAP1510_LB_MEMSIZE; tlb++) {
137	lbaddr = tlb * 0x00100000 + OMAP1510_LB_OFFSET;
138	physaddr = tlb * 0x00100000 + PHYS_OFFSET;
139	omap_writel((lbaddr & 0x0fffffff) >> 22, OMAP1510_LB_MMU_CAM_H);
140	omap_writel(((lbaddr & 0x003ffc00) >> 6) \| 0xc,
141	OMAP1510_LB_MMU_CAM_L);
142	omap_writel(physaddr >> 16, OMAP1510_LB_MMU_RAM_H);
143	omap_writel((physaddr & 0x0000fc00) \| 0x300, OMAP1510_LB_MMU_RAM_L);
144	omap_writel(tlb << 4, OMAP1510_LB_MMU_LCK);
145	omap_writel(0x1, OMAP1510_LB_MMU_LD_TLB);
146	}
147
148	/* Enable the walking table */
149	omap_writel(omap_readl(OMAP1510_LB_MMU_CTL) \| (1 << 3), OMAP1510_LB_MMU_CTL);
150	udelay(200);
151
152	return 0;
153	}
154
155	#ifdef CONFIG_USB_OTG
156
157	static void start_hnp(struct ohci_hcd *ohci)
158	{
159	const unsigned port = ohci_to_hcd(ohci)->self.otg_port - 1;
160	unsigned long flags;
161
162	otg_start_hnp(ohci->transceiver);
163
164	local_irq_save(flags);
165	ohci->transceiver->state = OTG_STATE_A_SUSPEND;
166	writel (RH_PS_PSS, &ohci->regs->roothub.portstatus [port]);
167	OTG_CTRL_REG &= ~OTG_A_BUSREQ;
168	local_irq_restore(flags);
169	}
170
171	#endif
172
173	/-------------------------------------------------------------------------/
174
175	static int omap_start_hc(struct ohci_hcd ohci, struct platform_device pdev)
176	{
177	struct omap_usb_config *config = pdev->dev.platform_data;
178	int need_transceiver = (config->otg != 0);
179	int ret;
180
181	dev_dbg(&pdev->dev, "starting USB Controller\n");
182
183	if (config->otg) {
184	ohci_to_hcd(ohci)->self.otg_port = config->otg;
185	/* default/minimum OTG power budget: 8 mA */
bc96c0ad	186	ohci_to_hcd(ohci)->power_budget = 8;
1da177e4 LT	187	}
	188
	189	/* boards can use OTG transceivers in non-OTG modes */
	190	need_transceiver = need_transceiver
	191	\|\| machine_is_omap_h2() \|\| machine_is_omap_h3();
	192
	193	if (cpu_is_omap16xx())
	194	ocpi_enable();
	195
	196	#ifdef CONFIG_ARCH_OMAP_OTG
	197	if (need_transceiver) {
	198	ohci->transceiver = otg_get_transceiver();
	199	if (ohci->transceiver) {
	200	int status = otg_set_host(ohci->transceiver,
	201	&ohci_to_hcd(ohci)->self);
	202	dev_dbg(&pdev->dev, "init %s transceiver, status %d\n",
	203	ohci->transceiver->label, status);
	204	if (status) {
	205	if (ohci->transceiver)
	206	put_device(ohci->transceiver->dev);
	207	return status;
	208	}
	209	} else {
	210	dev_err(&pdev->dev, "can't find transceiver\n");
	211	return -ENODEV;
	212	}
	213	}
	214	#endif
	215
	216	omap_ohci_clock_power(1);
	217
	218	if (cpu_is_omap1510()) {
	219	omap_1510_local_bus_power(1);
	220	omap_1510_local_bus_init();
	221	}
	222
	223	if ((ret = ohci_init(ohci)) < 0)
	224	return ret;
	225
	226	/* board-specific power switching and overcurrent support */
	227	if (machine_is_omap_osk() \|\| machine_is_omap_innovator()) {
	228	u32 rh = roothub_a (ohci);
	229
	230	/* power switching (ganged by default) */
	231	rh &= ~RH_A_NPS;
	232
	233	/* TPS2045 switch for internal transceiver (port 1) */
	234	if (machine_is_omap_osk()) {
bc96c0ad	235	ohci_to_hcd(ohci)->power_budget = 250;
1da177e4 LT	236
	237	rh &= ~RH_A_NOCP;
	238
	239	/* gpio9 for overcurrent detction */
	240	omap_cfg_reg(W8_1610_GPIO9);
	241	omap_request_gpio(9);
	242	omap_set_gpio_direction(9, 1 /* IN */);
	243
	244	/* for paranoia's sake: disable USB.PUEN */
	245	omap_cfg_reg(W4_USB_HIGHZ);
	246	}
	247	ohci_writel(ohci, rh, &ohci->regs->roothub.a);
	248	distrust_firmware = 0;
	249	}
	250
	251	/* FIXME khubd hub requests should manage power switching */
	252	omap_ohci_transceiver_power(1);
	253
	254	/* board init will have already handled HMC and mux setup.
	255	* any external transceiver should already be initialized
	256	* too, so all configured ports use the right signaling now.
	257	*/
	258
	259	return 0;
	260	}
	261
	262	static void omap_stop_hc(struct platform_device *pdev)
	263	{
	264	dev_dbg(&pdev->dev, "stopping USB Controller\n");
	265	omap_ohci_clock_power(0);
	266	}
	267
	268
	269	/-------------------------------------------------------------------------/
	270
	271	void usb_hcd_omap_remove (struct usb_hcd , struct platform_device );
	272
	273	/* configure so an HC device and id are always provided */
	274	/* always called with process context; sleeping is OK */
	275
	276
	277	/**
	278	* usb_hcd_omap_probe - initialize OMAP-based HCDs
	279	* Context: !in_interrupt()
	280	*
	281	* Allocates basic resources for this USB host controller, and
	282	* then invokes the start() method for the HCD associated with it
	283	* through the hotplug entry's driver_data.
	284	*/
	285	int usb_hcd_omap_probe (const struct hc_driver *driver,
	286	struct platform_device *pdev)
	287	{
	288	int retval;
	289	struct usb_hcd *hcd = 0;
	290	struct ohci_hcd *ohci;
	291
	292	if (pdev->num_resources != 2) {
	293	printk(KERN_ERR "hcd probe: invalid num_resources: %i\n",
	294	pdev->num_resources);
	295	return -ENODEV;
	296	}
	297
	298	if (pdev->resource[0].flags != IORESOURCE_MEM
	299	\|\| pdev->resource[1].flags != IORESOURCE_IRQ) {
300	printk(KERN_ERR "hcd probe: invalid resource type\n");
301	return -ENODEV;
302	}
303
304	usb_host_ck = clk_get(0, "usb_hhc_ck");
305	if (IS_ERR(usb_host_ck))
306	return PTR_ERR(usb_host_ck);
307
308	hcd = usb_create_hcd (driver, &pdev->dev, pdev->dev.bus_id);
309	if (!hcd) {
310	retval = -ENOMEM;
311	goto err0;
312	}
313	hcd->rsrc_start = pdev->resource[0].start;
314	hcd->rsrc_len = pdev->resource[0].end - pdev->resource[0].start + 1;
315
316	if (!request_mem_region(hcd->rsrc_start, hcd->rsrc_len, hcd_name)) {
317	dev_dbg(&pdev->dev, "request_mem_region failed\n");
318	retval = -EBUSY;
319	goto err1;
320	}
321
322	hcd->regs = (void __iomem *) (int) IO_ADDRESS(hcd->rsrc_start);
323
324	ohci = hcd_to_ohci(hcd);
325	ohci_hcd_init(ohci);
326
327	retval = omap_start_hc(ohci, pdev);
328	if (retval < 0)
329	goto err2;
330
331	retval = usb_add_hcd(hcd, platform_get_irq(pdev, 0), SA_INTERRUPT);
332	if (retval == 0)
333	return retval;
334
335	omap_stop_hc(pdev);
336	err2:
337	release_mem_region(hcd->rsrc_start, hcd->rsrc_len);
338	err1:
339	usb_put_hcd(hcd);
340	err0:
341	clk_put(usb_host_ck);
342	return retval;
343	}
344
345
346	/* may be called with controller, bus, and devices active */
347
348	/**
349	* usb_hcd_omap_remove - shutdown processing for OMAP-based HCDs
350	* @dev: USB Host Controller being removed
351	* Context: !in_interrupt()
352	*
353	* Reverses the effect of usb_hcd_omap_probe(), first invoking
354	* the HCD's stop() method. It is always called from a thread
355	* context, normally "rmmod", "apmd", or something similar.
356	*
357	*/
358	void usb_hcd_omap_remove (struct usb_hcd hcd, struct platform_device pdev)
359	{
360	usb_remove_hcd(hcd);
361	if (machine_is_omap_osk())
362	omap_free_gpio(9);
363	omap_stop_hc(pdev);
364	release_mem_region(hcd->rsrc_start, hcd->rsrc_len);
365	usb_put_hcd(hcd);
366	clk_put(usb_host_ck);
367	}
368
369	/-------------------------------------------------------------------------/
370
371	static int __devinit
372	ohci_omap_start (struct usb_hcd *hcd)
373	{
374	struct omap_usb_config *config;
375	struct ohci_hcd *ohci = hcd_to_ohci (hcd);
376	int ret;
377
378	config = hcd->self.controller->platform_data;
379	if (config->otg \|\| config->rwc)
380	writel(OHCI_CTRL_RWC, &ohci->regs->control);
381
382	if ((ret = ohci_run (ohci)) < 0) {
383	dev_err(hcd->self.controller, "can't start\n");
384	ohci_stop (hcd);
385	return ret;
386	}
387	return 0;
388	}
389
390	/-------------------------------------------------------------------------/
391
392	static const struct hc_driver ohci_omap_hc_driver = {
393	.description = hcd_name,
394	.product_desc = "OMAP OHCI",
395	.hcd_priv_size = sizeof(struct ohci_hcd),
396
397	/*
398	* generic hardware linkage
399	*/
400	.irq = ohci_irq,
401	.flags = HCD_USB11 \| HCD_MEMORY,
402
403	/*
404	* basic lifecycle operations
405	*/
406	.start = ohci_omap_start,
407	.stop = ohci_stop,
408
409	/*
410	* managing i/o requests and associated device resources
411	*/
412	.urb_enqueue = ohci_urb_enqueue,
413	.urb_dequeue = ohci_urb_dequeue,
414	.endpoint_disable = ohci_endpoint_disable,
415
416	/*
417	* scheduling support
418	*/
419	.get_frame_number = ohci_get_frame,
420
421	/*
422	* root hub support
423	*/
424	.hub_status_data = ohci_hub_status_data,
425	.hub_control = ohci_hub_control,
8ad7fe16	426	#ifdef CONFIG_PM
0c0382e3 AS	427	.bus_suspend = ohci_bus_suspend,
0c0382e3 AS	428	.bus_resume = ohci_bus_resume,
1da177e4 LT	429	#endif
	430	.start_port_reset = ohci_start_port_reset,
	431	};
	432
	433	/-------------------------------------------------------------------------/
	434
	435	static int ohci_hcd_omap_drv_probe(struct device *dev)
	436	{
	437	return usb_hcd_omap_probe(&ohci_omap_hc_driver,
	438	to_platform_device(dev));
	439	}
	440
	441	static int ohci_hcd_omap_drv_remove(struct device *dev)
	442	{
	443	struct platform_device *pdev = to_platform_device(dev);
	444	struct usb_hcd *hcd = dev_get_drvdata(dev);
	445	struct ohci_hcd *ohci = hcd_to_ohci (hcd);
	446
	447	usb_hcd_omap_remove(hcd, pdev);
	448	if (ohci->transceiver) {
	449	(void) otg_set_host(ohci->transceiver, 0);
	450	put_device(ohci->transceiver->dev);
	451	}
	452	dev_set_drvdata(dev, NULL);
	453
	454	return 0;
	455	}
	456
	457	/-------------------------------------------------------------------------/
	458
	459	#ifdef CONFIG_PM
	460
9480e307	461	static int ohci_omap_suspend(struct device *dev, pm_message_t message)
1da177e4 LT	462	{
1da177e4 LT	463	struct ohci_hcd *ohci = hcd_to_ohci(dev_get_drvdata(dev));
f197b2c5 DB	464
	465	if (time_before(jiffies, ohci->next_statechange))
	466	msleep(5);
	467	ohci->next_statechange = jiffies;
	468
	469	omap_ohci_clock_power(0);
	470	ohci_to_hcd(ohci)->state = HC_STATE_SUSPENDED;
	471	dev->power.power_state = PMSG_SUSPEND;
	472	return 0;
1da177e4 LT	473	}
1da177e4 LT	474
9480e307	475	static int ohci_omap_resume(struct device *dev)
1da177e4 LT	476	{
1da177e4 LT	477	struct ohci_hcd *ohci = hcd_to_ohci(dev_get_drvdata(dev));
1da177e4	478
b404a5b0	479	if (time_before(jiffies, ohci->next_statechange))
	480	msleep(5);
	481	ohci->next_statechange = jiffies;
f197b2c5	482
b404a5b0	483	omap_ohci_clock_power(1);
f197b2c5 DB	484	dev->power.power_state = PMSG_ON;
	485	usb_hcd_resume_root_hub(dev_get_drvdata(dev));
	486	return 0;
1da177e4 LT	487	}
	488
	489	#endif
	490
	491	/-------------------------------------------------------------------------/
	492
	493	/*
	494	* Driver definition to register with the OMAP bus
	495	*/
	496	static struct device_driver ohci_hcd_omap_driver = {
	497	.name = "ohci",
efa400db	498	.owner = THIS_MODULE,
1da177e4 LT	499	.bus = &platform_bus_type,
	500	.probe = ohci_hcd_omap_drv_probe,
	501	.remove = ohci_hcd_omap_drv_remove,
	502	#ifdef CONFIG_PM
	503	.suspend = ohci_omap_suspend,
	504	.resume = ohci_omap_resume,
	505	#endif
	506	};
	507
	508	static int __init ohci_hcd_omap_init (void)
	509	{
	510	printk (KERN_DEBUG "%s: " DRIVER_INFO " (OMAP)\n", hcd_name);
	511	if (usb_disabled())
	512	return -ENODEV;
	513
	514	pr_debug("%s: block sizes: ed %Zd td %Zd\n", hcd_name,
	515	sizeof (struct ed), sizeof (struct td));
	516
	517	return driver_register(&ohci_hcd_omap_driver);
	518	}
	519
	520	static void __exit ohci_hcd_omap_cleanup (void)
	521	{
	522	driver_unregister(&ohci_hcd_omap_driver);
	523	}
	524
	525	module_init (ohci_hcd_omap_init);
	526	module_exit (ohci_hcd_omap_cleanup);