[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>
#include <linux/jiffies.h>
#include <linux/platform_device.h>
#include <linux/clk.h>
#include <linux/err.h>
#include <linux/gpio.h>

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

#include <mach/mux.h>
#include <plat/fpga.h>

#include <mach/hardware.h>
#include <mach/irqs.h>
#include <mach/usb.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 <linux/i2c/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 struct clk *usb_dc_ck;
static int host_enabled;
static int host_initialized;

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

#ifdef CONFIG_ARCH_OMAP15XX
/*
 * 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;
}
#else
#define omap_1510_local_bus_power(x)	{}
#define omap_1510_local_bus_init()	{}
#endif

#ifdef	CONFIG_USB_OTG

static void start_hnp(struct ohci_hcd *ohci)
{
	struct usb_hcd *hcd = ohci_to_hcd(ohci);
	const unsigned	port = hcd->self.otg_port - 1;
	unsigned long	flags;
	u32 l;

	otg_start_hnp(hcd->phy->otg);

	local_irq_save(flags);
	hcd->phy->state = OTG_STATE_A_SUSPEND;
	writel (RH_PS_PSS, &ohci->regs->roothub.portstatus [port]);
	l = omap_readl(OTG_CTRL);
	l &= ~OTG_A_BUSREQ;
	omap_writel(l, OTG_CTRL);
	local_irq_restore(flags);
}

#endif

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

static int ohci_omap_init(struct usb_hcd *hcd)
{
	struct ohci_hcd		*ohci = hcd_to_ohci(hcd);
	struct omap_usb_config	*config = hcd->self.controller->platform_data;
	int			need_transceiver = (config->otg != 0);
	int			ret;

	dev_dbg(hcd->self.controller, "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();

	/* XXX OMAP16xx only */
	if (config->ocpi_enable)
		config->ocpi_enable();

#ifdef	CONFIG_USB_OTG
	if (need_transceiver) {
		hcd->phy = usb_get_phy(USB_PHY_TYPE_USB2);
		if (!IS_ERR_OR_NULL(hcd->phy)) {
			int	status = otg_set_host(hcd->phy->otg,
						&ohci_to_hcd(ohci)->self);
			dev_dbg(hcd->self.controller, "init %s phy, status %d\n",
					hcd->phy->label, status);
			if (status) {
				usb_put_phy(hcd->phy);
				return status;
			}
		} else {
			dev_err(hcd->self.controller, "can't find phy\n");
			return -ENODEV;
		}
		ohci->start_hnp = start_hnp;
	}
#endif

	omap_ohci_clock_power(1);

	if (cpu_is_omap15xx()) {
		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);
			gpio_request(9, "OHCI overcurrent");
			gpio_direction_input(9);

			/* for paranoia's sake:  disable USB.PUEN */
			omap_cfg_reg(W4_USB_HIGHZ);
		}
		ohci_writel(ohci, rh, &ohci->regs->roothub.a);
		ohci->flags &= ~OHCI_QUIRK_HUB_POWER;
	} else if (machine_is_nokia770()) {
		/* We require a self-powered hub, which should have
		 * plenty of power. */
		ohci_to_hcd(ohci)->power_budget = 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 ohci_omap_stop(struct usb_hcd *hcd)
{
	dev_dbg(hcd->self.controller, "stopping USB Controller\n");
	ohci_stop(hcd);
	omap_ohci_clock_power(0);
}


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

/**
 * 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.
 */
static int usb_hcd_omap_probe (const struct hc_driver *driver,
			  struct platform_device *pdev)
{
	int retval, irq;
	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(&pdev->dev, "usb_hhc_ck");
	if (IS_ERR(usb_host_ck))
		return PTR_ERR(usb_host_ck);

	if (!cpu_is_omap15xx())
		usb_dc_ck = clk_get(&pdev->dev, "usb_dc_ck");
	else
		usb_dc_ck = clk_get(&pdev->dev, "lb_ck");

	if (IS_ERR(usb_dc_ck)) {
		clk_put(usb_host_ck);
		return PTR_ERR(usb_dc_ck);
	}


	hcd = usb_create_hcd (driver, &pdev->dev, dev_name(&pdev->dev));
	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 = ioremap(hcd->rsrc_start, hcd->rsrc_len);
	if (!hcd->regs) {
		dev_err(&pdev->dev, "can't ioremap OHCI HCD\n");
		retval = -ENOMEM;
		goto err2;
	}

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

	host_initialized = 0;
	host_enabled = 1;

	irq = platform_get_irq(pdev, 0);
	if (irq < 0) {
		retval = -ENXIO;
		goto err3;
	}
	retval = usb_add_hcd(hcd, irq, 0);
	if (retval)
		goto err3;

	host_initialized = 1;

	if (!host_enabled)
		omap_ohci_clock_power(0);

	return 0;
err3:
	iounmap(hcd->regs);
err2:
	release_mem_region(hcd->rsrc_start, hcd->rsrc_len);
err1:
	usb_put_hcd(hcd);
err0:
	clk_put(usb_dc_ck);
	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.
 */
static inline void
usb_hcd_omap_remove (struct usb_hcd *hcd, struct platform_device *pdev)
{
	usb_remove_hcd(hcd);
	if (!IS_ERR_OR_NULL(hcd->phy)) {
		(void) otg_set_host(hcd->phy->otg, 0);
		usb_put_phy(hcd->phy);
	}
	if (machine_is_omap_osk())
		gpio_free(9);
	iounmap(hcd->regs);
	release_mem_region(hcd->rsrc_start, hcd->rsrc_len);
	usb_put_hcd(hcd);
	clk_put(usb_dc_ck);
	clk_put(usb_host_ck);
}

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

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

	if (!host_enabled)
		return 0;
	config = hcd->self.controller->platform_data;
	if (config->otg || config->rwc) {
		ohci->hc_control = OHCI_CTRL_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
	 */
	.reset =		ohci_omap_init,
	.start =		ohci_omap_start,
	.stop =			ohci_omap_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,
#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 platform_device *dev)
{
	return usb_hcd_omap_probe(&ohci_omap_hc_driver, dev);
}

static int ohci_hcd_omap_drv_remove(struct platform_device *dev)
{
	struct usb_hcd		*hcd = platform_get_drvdata(dev);

	usb_hcd_omap_remove(hcd, dev);
	platform_set_drvdata(dev, NULL);

	return 0;
}

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

#ifdef	CONFIG_PM

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

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

	omap_ohci_clock_power(0);
	return 0;
}

static int ohci_omap_resume(struct platform_device *dev)
{
	struct usb_hcd	*hcd = platform_get_drvdata(dev);
	struct ohci_hcd	*ohci = hcd_to_ohci(hcd);

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

	omap_ohci_clock_power(1);
	ohci_finish_controller_resume(hcd);
	return 0;
}

#endif

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

/*
 * Driver definition to register with the OMAP bus
 */
static struct platform_driver ohci_hcd_omap_driver = {
	.probe		= ohci_hcd_omap_drv_probe,
	.remove		= ohci_hcd_omap_drv_remove,
	.shutdown	= usb_hcd_platform_shutdown,
#ifdef	CONFIG_PM
	.suspend	= ohci_omap_suspend,
	.resume		= ohci_omap_resume,
#endif
	.driver		= {
		.owner	= THIS_MODULE,
		.name	= "ohci",
	},
};

MODULE_ALIAS("platform:ohci");
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
bd35078f	7	*
1da177e4 LT	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
b5dd18d8	17	#include <linux/signal.h>
4e57b681	18	#include <linux/jiffies.h>
d052d1be	19	#include <linux/platform_device.h>
f8ce2547	20	#include <linux/clk.h>
ded017ee	21	#include <linux/err.h>
944e1bff	22	#include <linux/gpio.h>
4e57b681	23
1da177e4 LT	24	#include <asm/io.h>
	25	#include <asm/mach-types.h>
	26
70c494c3	27	#include <mach/mux.h>
ce491cf8	28	#include <plat/fpga.h>
b924b204 TL	29
	30	#include <mach/hardware.h>
	31	#include <mach/irqs.h>
	32	#include <mach/usb.h>
1da177e4 LT	33
	34
	35	/* OMAP-1510 OHCI has its own MMU for DMA */
	36	#define OMAP1510_LB_MEMSIZE 32 /* Should be same as SDRAM size */
	37	#define OMAP1510_LB_CLOCK_DIV 0xfffec10c
	38	#define OMAP1510_LB_MMU_CTL 0xfffec208
	39	#define OMAP1510_LB_MMU_LCK 0xfffec224
	40	#define OMAP1510_LB_MMU_LD_TLB 0xfffec228
	41	#define OMAP1510_LB_MMU_CAM_H 0xfffec22c
	42	#define OMAP1510_LB_MMU_CAM_L 0xfffec230
	43	#define OMAP1510_LB_MMU_RAM_H 0xfffec234
	44	#define OMAP1510_LB_MMU_RAM_L 0xfffec238
	45
	46
	47	#ifndef CONFIG_ARCH_OMAP
	48	#error "This file is OMAP bus glue. CONFIG_OMAP must be defined."
	49	#endif
	50
	51	#ifdef CONFIG_TPS65010
6d16bfb5	52	#include <linux/i2c/tps65010.h>
1da177e4 LT	53	#else
	54
	55	#define LOW 0
	56	#define HIGH 1
	57
	58	#define GPIO1 1
	59
	60	static inline int tps65010_set_gpio_out_value(unsigned gpio, unsigned value)
	61	{
	62	return 0;
	63	}
	64
	65	#endif
	66
	67	extern int usb_disabled(void);
	68	extern int ocpi_enable(void);
	69
	70	static struct clk *usb_host_ck;
bd35078f DB	71	static struct clk *usb_dc_ck;
	72	static int host_enabled;
	73	static int host_initialized;
1da177e4 LT	74
	75	static void omap_ohci_clock_power(int on)
	76	{
	77	if (on) {
bd35078f	78	clk_enable(usb_dc_ck);
1da177e4 LT	79	clk_enable(usb_host_ck);
	80	/* guesstimate for T5 == 1x 32K clock + APLL lock time */
	81	udelay(100);
	82	} else {
	83	clk_disable(usb_host_ck);
bd35078f	84	clk_disable(usb_dc_ck);
1da177e4 LT	85	}
	86	}
	87
	88	/*
	89	* Board specific gang-switched transceiver power on/off.
	90	* NOTE: OSK supplies power from DC, not battery.
	91	*/
	92	static int omap_ohci_transceiver_power(int on)
	93	{
	94	if (on) {
	95	if (machine_is_omap_innovator() && cpu_is_omap1510())
	96	fpga_write(fpga_read(INNOVATOR_FPGA_CAM_USB_CONTROL)
bd35078f	97	\| ((1 << 5/usb1/) \| (1 << 3/usb2/)),
1da177e4 LT	98	INNOVATOR_FPGA_CAM_USB_CONTROL);
	99	else if (machine_is_omap_osk())
	100	tps65010_set_gpio_out_value(GPIO1, LOW);
	101	} else {
	102	if (machine_is_omap_innovator() && cpu_is_omap1510())
	103	fpga_write(fpga_read(INNOVATOR_FPGA_CAM_USB_CONTROL)
bd35078f	104	& ~((1 << 5/usb1/) \| (1 << 3/usb2/)),
1da177e4 LT	105	INNOVATOR_FPGA_CAM_USB_CONTROL);
	106	else if (machine_is_omap_osk())
	107	tps65010_set_gpio_out_value(GPIO1, HIGH);
	108	}
	109
	110	return 0;
	111	}
	112
bd35078f	113	#ifdef CONFIG_ARCH_OMAP15XX
1da177e4 LT	114	/*
	115	* OMAP-1510 specific Local Bus clock on/off
	116	*/
	117	static int omap_1510_local_bus_power(int on)
	118	{
	119	if (on) {
	120	omap_writel((1 << 1) \| (1 << 0), OMAP1510_LB_MMU_CTL);
	121	udelay(200);
	122	} else {
	123	omap_writel(0, OMAP1510_LB_MMU_CTL);
	124	}
	125
	126	return 0;
	127	}
	128
	129	/*
	130	* OMAP-1510 specific Local Bus initialization
	131	* NOTE: This assumes 32MB memory size in OMAP1510LB_MEMSIZE.
bd35078f DB	132	* See also arch/mach-omap/memory.h for __virt_to_dma() and
bd35078f DB	133	* __dma_to_virt() which need to match with the physical
1da177e4 LT	134	* Local Bus address below.
	135	*/
	136	static int omap_1510_local_bus_init(void)
	137	{
	138	unsigned int tlb;
	139	unsigned long lbaddr, physaddr;
	140
bd35078f	141	omap_writel((omap_readl(OMAP1510_LB_CLOCK_DIV) & 0xfffffff8) \| 0x4,
1da177e4 LT	142	OMAP1510_LB_CLOCK_DIV);
	143
	144	/* Configure the Local Bus MMU table */
	145	for (tlb = 0; tlb < OMAP1510_LB_MEMSIZE; tlb++) {
	146	lbaddr = tlb * 0x00100000 + OMAP1510_LB_OFFSET;
	147	physaddr = tlb * 0x00100000 + PHYS_OFFSET;
	148	omap_writel((lbaddr & 0x0fffffff) >> 22, OMAP1510_LB_MMU_CAM_H);
bd35078f	149	omap_writel(((lbaddr & 0x003ffc00) >> 6) \| 0xc,
1da177e4 LT	150	OMAP1510_LB_MMU_CAM_L);
	151	omap_writel(physaddr >> 16, OMAP1510_LB_MMU_RAM_H);
	152	omap_writel((physaddr & 0x0000fc00) \| 0x300, OMAP1510_LB_MMU_RAM_L);
	153	omap_writel(tlb << 4, OMAP1510_LB_MMU_LCK);
	154	omap_writel(0x1, OMAP1510_LB_MMU_LD_TLB);
	155	}
	156
	157	/* Enable the walking table */
	158	omap_writel(omap_readl(OMAP1510_LB_MMU_CTL) \| (1 << 3), OMAP1510_LB_MMU_CTL);
	159	udelay(200);
	160
	161	return 0;
	162	}
bd35078f DB	163	#else
	164	#define omap_1510_local_bus_power(x) {}
	165	#define omap_1510_local_bus_init() {}
	166	#endif
1da177e4 LT	167
	168	#ifdef CONFIG_USB_OTG
	169
	170	static void start_hnp(struct ohci_hcd *ohci)
	171	{
c2e935a7 RZ	172	struct usb_hcd *hcd = ohci_to_hcd(ohci);
c2e935a7 RZ	173	const unsigned port = hcd->self.otg_port - 1;
1da177e4	174	unsigned long flags;
f35ae634	175	u32 l;
1da177e4	176
c2e935a7	177	otg_start_hnp(hcd->phy->otg);
1da177e4 LT	178
1da177e4 LT	179	local_irq_save(flags);
c2e935a7	180	hcd->phy->state = OTG_STATE_A_SUSPEND;
1da177e4	181	writel (RH_PS_PSS, &ohci->regs->roothub.portstatus [port]);
f35ae634 TL	182	l = omap_readl(OTG_CTRL);
	183	l &= ~OTG_A_BUSREQ;
	184	omap_writel(l, OTG_CTRL);
1da177e4 LT	185	local_irq_restore(flags);
	186	}
	187
	188	#endif
	189
	190	/-------------------------------------------------------------------------/
	191
bd35078f	192	static int ohci_omap_init(struct usb_hcd *hcd)
1da177e4	193	{
bd35078f DB	194	struct ohci_hcd *ohci = hcd_to_ohci(hcd);
bd35078f DB	195	struct omap_usb_config *config = hcd->self.controller->platform_data;
1da177e4 LT	196	int need_transceiver = (config->otg != 0);
	197	int ret;
	198
bd35078f	199	dev_dbg(hcd->self.controller, "starting USB Controller\n");
1da177e4 LT	200
	201	if (config->otg) {
	202	ohci_to_hcd(ohci)->self.otg_port = config->otg;
	203	/* default/minimum OTG power budget: 8 mA */
bc96c0ad	204	ohci_to_hcd(ohci)->power_budget = 8;
1da177e4 LT	205	}
	206
	207	/* boards can use OTG transceivers in non-OTG modes */
	208	need_transceiver = need_transceiver
	209	\|\| machine_is_omap_h2() \|\| machine_is_omap_h3();
	210
d3645d39 PW	211	/* XXX OMAP16xx only */
	212	if (config->ocpi_enable)
	213	config->ocpi_enable();
1da177e4	214
c3df1a26	215	#ifdef CONFIG_USB_OTG
1da177e4	216	if (need_transceiver) {
ff9cce82 GKH	217	hcd->phy = usb_get_phy(USB_PHY_TYPE_USB2);
ff9cce82 GKH	218	if (!IS_ERR_OR_NULL(hcd->phy)) {
c2e935a7	219	int status = otg_set_host(hcd->phy->otg,
1da177e4	220	&ohci_to_hcd(ohci)->self);
c2e935a7 RZ	221	dev_dbg(hcd->self.controller, "init %s phy, status %d\n",
c2e935a7 RZ	222	hcd->phy->label, status);
1da177e4	223	if (status) {
ff9cce82	224	usb_put_phy(hcd->phy);
1da177e4 LT	225	return status;
	226	}
	227	} else {
c2e935a7	228	dev_err(hcd->self.controller, "can't find phy\n");
1da177e4 LT	229	return -ENODEV;
1da177e4 LT	230	}
e8b24450	231	ohci->start_hnp = start_hnp;
1da177e4 LT	232	}
	233	#endif
	234
	235	omap_ohci_clock_power(1);
	236
9b466c3b	237	if (cpu_is_omap15xx()) {
1da177e4 LT	238	omap_1510_local_bus_power(1);
	239	omap_1510_local_bus_init();
	240	}
	241
	242	if ((ret = ohci_init(ohci)) < 0)
	243	return ret;
	244
	245	/* board-specific power switching and overcurrent support */
	246	if (machine_is_omap_osk() \|\| machine_is_omap_innovator()) {
	247	u32 rh = roothub_a (ohci);
	248
	249	/* power switching (ganged by default) */
	250	rh &= ~RH_A_NPS;
	251
	252	/* TPS2045 switch for internal transceiver (port 1) */
	253	if (machine_is_omap_osk()) {
bc96c0ad	254	ohci_to_hcd(ohci)->power_budget = 250;
1da177e4 LT	255
	256	rh &= ~RH_A_NOCP;
	257
	258	/* gpio9 for overcurrent detction */
	259	omap_cfg_reg(W8_1610_GPIO9);
944e1bff	260	gpio_request(9, "OHCI overcurrent");
40e3925b	261	gpio_direction_input(9);
1da177e4 LT	262
	263	/* for paranoia's sake: disable USB.PUEN */
	264	omap_cfg_reg(W4_USB_HIGHZ);
	265	}
	266	ohci_writel(ohci, rh, &ohci->regs->roothub.a);
1133cd8a	267	ohci->flags &= ~OHCI_QUIRK_HUB_POWER;
bd35078f DB	268	} else if (machine_is_nokia770()) {
	269	/* We require a self-powered hub, which should have
	270	* plenty of power. */
	271	ohci_to_hcd(ohci)->power_budget = 0;
1da177e4 LT	272	}
	273
	274	/* FIXME khubd hub requests should manage power switching */
	275	omap_ohci_transceiver_power(1);
	276
	277	/* board init will have already handled HMC and mux setup.
	278	* any external transceiver should already be initialized
	279	* too, so all configured ports use the right signaling now.
	280	*/
	281
	282	return 0;
	283	}
	284
bd35078f	285	static void ohci_omap_stop(struct usb_hcd *hcd)
1da177e4	286	{
bd35078f	287	dev_dbg(hcd->self.controller, "stopping USB Controller\n");
715bfc22	288	ohci_stop(hcd);
1da177e4 LT	289	omap_ohci_clock_power(0);
	290	}
	291
	292
	293	/-------------------------------------------------------------------------/
	294
1da177e4 LT	295	/**
	296	* usb_hcd_omap_probe - initialize OMAP-based HCDs
	297	* Context: !in_interrupt()
	298	*
	299	* Allocates basic resources for this USB host controller, and
	300	* then invokes the start() method for the HCD associated with it
	301	* through the hotplug entry's driver_data.
	302	*/
bd35078f	303	static int usb_hcd_omap_probe (const struct hc_driver *driver,
1da177e4 LT	304	struct platform_device *pdev)
1da177e4 LT	305	{
48944738	306	int retval, irq;
1da177e4 LT	307	struct usb_hcd *hcd = 0;
	308	struct ohci_hcd *ohci;
	309
	310	if (pdev->num_resources != 2) {
bd35078f	311	printk(KERN_ERR "hcd probe: invalid num_resources: %i\n",
1da177e4 LT	312	pdev->num_resources);
	313	return -ENODEV;
	314	}
	315
bd35078f	316	if (pdev->resource[0].flags != IORESOURCE_MEM
1da177e4 LT	317	\|\| pdev->resource[1].flags != IORESOURCE_IRQ) {
	318	printk(KERN_ERR "hcd probe: invalid resource type\n");
	319	return -ENODEV;
	320	}
	321
953a7e84	322	usb_host_ck = clk_get(&pdev->dev, "usb_hhc_ck");
1da177e4 LT	323	if (IS_ERR(usb_host_ck))
	324	return PTR_ERR(usb_host_ck);
	325
9b466c3b	326	if (!cpu_is_omap15xx())
953a7e84	327	usb_dc_ck = clk_get(&pdev->dev, "usb_dc_ck");
bd35078f	328	else
953a7e84	329	usb_dc_ck = clk_get(&pdev->dev, "lb_ck");
bd35078f DB	330
	331	if (IS_ERR(usb_dc_ck)) {
	332	clk_put(usb_host_ck);
	333	return PTR_ERR(usb_dc_ck);
	334	}
	335
	336
7071a3ce	337	hcd = usb_create_hcd (driver, &pdev->dev, dev_name(&pdev->dev));
1da177e4 LT	338	if (!hcd) {
	339	retval = -ENOMEM;
	340	goto err0;
	341	}
	342	hcd->rsrc_start = pdev->resource[0].start;
	343	hcd->rsrc_len = pdev->resource[0].end - pdev->resource[0].start + 1;
	344
	345	if (!request_mem_region(hcd->rsrc_start, hcd->rsrc_len, hcd_name)) {
	346	dev_dbg(&pdev->dev, "request_mem_region failed\n");
	347	retval = -EBUSY;
	348	goto err1;
	349	}
	350
55c381e4 RK	351	hcd->regs = ioremap(hcd->rsrc_start, hcd->rsrc_len);
	352	if (!hcd->regs) {
	353	dev_err(&pdev->dev, "can't ioremap OHCI HCD\n");
	354	retval = -ENOMEM;
	355	goto err2;
	356	}
1da177e4 LT	357
	358	ohci = hcd_to_ohci(hcd);
	359	ohci_hcd_init(ohci);
	360
bd35078f DB	361	host_initialized = 0;
bd35078f DB	362	host_enabled = 1;
1da177e4	363
48944738 DV	364	irq = platform_get_irq(pdev, 0);
	365	if (irq < 0) {
	366	retval = -ENXIO;
55c381e4	367	goto err3;
48944738	368	}
b5dd18d8	369	retval = usb_add_hcd(hcd, irq, 0);
bd35078f	370	if (retval)
55c381e4	371	goto err3;
bd35078f DB	372
	373	host_initialized = 1;
	374
	375	if (!host_enabled)
	376	omap_ohci_clock_power(0);
1da177e4	377
bd35078f	378	return 0;
55c381e4 RK	379	err3:
55c381e4 RK	380	iounmap(hcd->regs);
1da177e4 LT	381	err2:
	382	release_mem_region(hcd->rsrc_start, hcd->rsrc_len);
	383	err1:
	384	usb_put_hcd(hcd);
	385	err0:
bd35078f	386	clk_put(usb_dc_ck);
1da177e4 LT	387	clk_put(usb_host_ck);
	388	return retval;
	389	}
	390
	391
	392	/* may be called with controller, bus, and devices active */
	393
	394	/**
	395	* usb_hcd_omap_remove - shutdown processing for OMAP-based HCDs
	396	* @dev: USB Host Controller being removed
	397	* Context: !in_interrupt()
	398	*
	399	* Reverses the effect of usb_hcd_omap_probe(), first invoking
	400	* the HCD's stop() method. It is always called from a thread
	401	* context, normally "rmmod", "apmd", or something similar.
1da177e4	402	*/
bd35078f DB	403	static inline void
bd35078f DB	404	usb_hcd_omap_remove (struct usb_hcd hcd, struct platform_device pdev)
1da177e4 LT	405	{
1da177e4 LT	406	usb_remove_hcd(hcd);
ff9cce82	407	if (!IS_ERR_OR_NULL(hcd->phy)) {
c2e935a7	408	(void) otg_set_host(hcd->phy->otg, 0);
ff9cce82	409	usb_put_phy(hcd->phy);
bd35078f	410	}
1da177e4	411	if (machine_is_omap_osk())
944e1bff	412	gpio_free(9);
55c381e4	413	iounmap(hcd->regs);
1da177e4 LT	414	release_mem_region(hcd->rsrc_start, hcd->rsrc_len);
1da177e4 LT	415	usb_put_hcd(hcd);
bd35078f	416	clk_put(usb_dc_ck);
1da177e4 LT	417	clk_put(usb_host_ck);
	418	}
	419
	420	/-------------------------------------------------------------------------/
	421
bd35078f	422	static int
1da177e4 LT	423	ohci_omap_start (struct usb_hcd *hcd)
	424	{
	425	struct omap_usb_config *config;
	426	struct ohci_hcd *ohci = hcd_to_ohci (hcd);
	427	int ret;
	428
bd35078f DB	429	if (!host_enabled)
bd35078f DB	430	return 0;
1da177e4	431	config = hcd->self.controller->platform_data;
d413984a DB	432	if (config->otg \|\| config->rwc) {
d413984a DB	433	ohci->hc_control = OHCI_CTRL_RWC;
1da177e4	434	writel(OHCI_CTRL_RWC, &ohci->regs->control);
d413984a	435	}
1da177e4 LT	436
	437	if ((ret = ohci_run (ohci)) < 0) {
	438	dev_err(hcd->self.controller, "can't start\n");
	439	ohci_stop (hcd);
	440	return ret;
	441	}
	442	return 0;
	443	}
	444
	445	/-------------------------------------------------------------------------/
	446
	447	static const struct hc_driver ohci_omap_hc_driver = {
	448	.description = hcd_name,
	449	.product_desc = "OMAP OHCI",
	450	.hcd_priv_size = sizeof(struct ohci_hcd),
	451
	452	/*
	453	* generic hardware linkage
	454	*/
	455	.irq = ohci_irq,
	456	.flags = HCD_USB11 \| HCD_MEMORY,
	457
	458	/*
	459	* basic lifecycle operations
	460	*/
bd35078f	461	.reset = ohci_omap_init,
1da177e4	462	.start = ohci_omap_start,
bd35078f	463	.stop = ohci_omap_stop,
dd9048af	464	.shutdown = ohci_shutdown,
1da177e4 LT	465
	466	/*
	467	* managing i/o requests and associated device resources
	468	*/
	469	.urb_enqueue = ohci_urb_enqueue,
	470	.urb_dequeue = ohci_urb_dequeue,
	471	.endpoint_disable = ohci_endpoint_disable,
	472
	473	/*
	474	* scheduling support
	475	*/
	476	.get_frame_number = ohci_get_frame,
	477
	478	/*
	479	* root hub support
	480	*/
	481	.hub_status_data = ohci_hub_status_data,
	482	.hub_control = ohci_hub_control,
8ad7fe16	483	#ifdef CONFIG_PM
0c0382e3 AS	484	.bus_suspend = ohci_bus_suspend,
0c0382e3 AS	485	.bus_resume = ohci_bus_resume,
1da177e4 LT	486	#endif
	487	.start_port_reset = ohci_start_port_reset,
	488	};
	489
	490	/-------------------------------------------------------------------------/
	491
3ae5eaec	492	static int ohci_hcd_omap_drv_probe(struct platform_device *dev)
1da177e4	493	{
3ae5eaec	494	return usb_hcd_omap_probe(&ohci_omap_hc_driver, dev);
1da177e4 LT	495	}
1da177e4 LT	496
3ae5eaec	497	static int ohci_hcd_omap_drv_remove(struct platform_device *dev)
1da177e4	498	{
3ae5eaec	499	struct usb_hcd *hcd = platform_get_drvdata(dev);
1da177e4	500
3ae5eaec	501	usb_hcd_omap_remove(hcd, dev);
3ae5eaec	502	platform_set_drvdata(dev, NULL);
1da177e4 LT	503
	504	return 0;
	505	}
	506
	507	/-------------------------------------------------------------------------/
	508
	509	#ifdef CONFIG_PM
	510
3ae5eaec	511	static int ohci_omap_suspend(struct platform_device *dev, pm_message_t message)
1da177e4	512	{
3ae5eaec	513	struct ohci_hcd *ohci = hcd_to_ohci(platform_get_drvdata(dev));
f197b2c5 DB	514
	515	if (time_before(jiffies, ohci->next_statechange))
	516	msleep(5);
	517	ohci->next_statechange = jiffies;
	518
	519	omap_ohci_clock_power(0);
f197b2c5	520	return 0;
1da177e4 LT	521	}
1da177e4 LT	522
3ae5eaec	523	static int ohci_omap_resume(struct platform_device *dev)
1da177e4	524	{
43bbb7e0 AS	525	struct usb_hcd *hcd = platform_get_drvdata(dev);
43bbb7e0 AS	526	struct ohci_hcd *ohci = hcd_to_ohci(hcd);
1da177e4	527
b404a5b0	528	if (time_before(jiffies, ohci->next_statechange))
	529	msleep(5);
	530	ohci->next_statechange = jiffies;
f197b2c5	531
b404a5b0	532	omap_ohci_clock_power(1);
43bbb7e0	533	ohci_finish_controller_resume(hcd);
f197b2c5	534	return 0;
1da177e4 LT	535	}
	536
	537	#endif
	538
	539	/-------------------------------------------------------------------------/
	540
	541	/*
	542	* Driver definition to register with the OMAP bus
	543	*/
3ae5eaec	544	static struct platform_driver ohci_hcd_omap_driver = {
1da177e4 LT	545	.probe = ohci_hcd_omap_drv_probe,
1da177e4 LT	546	.remove = ohci_hcd_omap_drv_remove,
dd9048af	547	.shutdown = usb_hcd_platform_shutdown,
1da177e4 LT	548	#ifdef CONFIG_PM
	549	.suspend = ohci_omap_suspend,
	550	.resume = ohci_omap_resume,
	551	#endif
3ae5eaec RK	552	.driver = {
	553	.owner = THIS_MODULE,
	554	.name = "ohci",
	555	},
1da177e4 LT	556	};
1da177e4 LT	557
f4fce61d	558	MODULE_ALIAS("platform:ohci");