[mirror_ubuntu-zesty-kernel.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>	/* IRQF_DISABLED */
#include <linux/jiffies.h>
#include <linux/platform_device.h>
#include <linux/clk.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>


/* 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)
{
	const unsigned	port = ohci_to_hcd(ohci)->self.otg_port - 1;
	unsigned long	flags;
	u32 l;

	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]);
	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();

	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(hcd->self.controller, "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(hcd->self.controller, "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;
	} 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");
	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(0, "usb_hhc_ck");
	if (IS_ERR(usb_host_ck))
		return PTR_ERR(usb_host_ck);

	if (!cpu_is_omap1510())
		usb_dc_ck = clk_get(0, "usb_dc_ck");
	else
		usb_dc_ck = clk_get(0, "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 = (void __iomem *) (int) IO_ADDRESS(hcd->rsrc_start);

	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 err2;
	}
	retval = usb_add_hcd(hcd, irq, IRQF_DISABLED);
	if (retval)
		goto err2;

	host_initialized = 1;

	if (!host_enabled)
		omap_ohci_clock_power(0);

	return 0;
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)
{
	struct ohci_hcd		*ohci = hcd_to_ohci (hcd);

	usb_remove_hcd(hcd);
	if (ohci->transceiver) {
		(void) otg_set_host(ohci->transceiver, 0);
		put_device(ohci->transceiver->dev);
	}
	if (machine_is_omap_osk())
		omap_free_gpio(9);
	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,
	.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_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);
	ohci_to_hcd(ohci)->state = HC_STATE_SUSPENDED;
	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
d54b5caa	17	#include <linux/signal.h> /* IRQF_DISABLED */
4e57b681	18	#include <linux/jiffies.h>
d052d1be	19	#include <linux/platform_device.h>
f8ce2547	20	#include <linux/clk.h>
4e57b681	21
1da177e4 LT	22	#include <asm/hardware.h>
	23	#include <asm/io.h>
	24	#include <asm/mach-types.h>
	25
1da177e4 LT	26	#include <asm/arch/mux.h>
	27	#include <asm/arch/irqs.h>
	28	#include <asm/arch/gpio.h>
	29	#include <asm/arch/fpga.h>
	30	#include <asm/arch/usb.h>
1da177e4 LT	31
	32
	33	/* OMAP-1510 OHCI has its own MMU for DMA */
	34	#define OMAP1510_LB_MEMSIZE 32 /* Should be same as SDRAM size */
	35	#define OMAP1510_LB_CLOCK_DIV 0xfffec10c
	36	#define OMAP1510_LB_MMU_CTL 0xfffec208
	37	#define OMAP1510_LB_MMU_LCK 0xfffec224
	38	#define OMAP1510_LB_MMU_LD_TLB 0xfffec228
	39	#define OMAP1510_LB_MMU_CAM_H 0xfffec22c
	40	#define OMAP1510_LB_MMU_CAM_L 0xfffec230
	41	#define OMAP1510_LB_MMU_RAM_H 0xfffec234
	42	#define OMAP1510_LB_MMU_RAM_L 0xfffec238
	43
	44
	45	#ifndef CONFIG_ARCH_OMAP
	46	#error "This file is OMAP bus glue. CONFIG_OMAP must be defined."
	47	#endif
	48
	49	#ifdef CONFIG_TPS65010
6d16bfb5	50	#include <linux/i2c/tps65010.h>
1da177e4 LT	51	#else
	52
	53	#define LOW 0
	54	#define HIGH 1
	55
	56	#define GPIO1 1
	57
	58	static inline int tps65010_set_gpio_out_value(unsigned gpio, unsigned value)
	59	{
	60	return 0;
	61	}
	62
	63	#endif
	64
	65	extern int usb_disabled(void);
	66	extern int ocpi_enable(void);
	67
	68	static struct clk *usb_host_ck;
bd35078f DB	69	static struct clk *usb_dc_ck;
	70	static int host_enabled;
	71	static int host_initialized;
1da177e4 LT	72
	73	static void omap_ohci_clock_power(int on)
	74	{
	75	if (on) {
bd35078f	76	clk_enable(usb_dc_ck);
1da177e4 LT	77	clk_enable(usb_host_ck);
	78	/* guesstimate for T5 == 1x 32K clock + APLL lock time */
	79	udelay(100);
	80	} else {
	81	clk_disable(usb_host_ck);
bd35078f	82	clk_disable(usb_dc_ck);
1da177e4 LT	83	}
	84	}
	85
	86	/*
	87	* Board specific gang-switched transceiver power on/off.
	88	* NOTE: OSK supplies power from DC, not battery.
	89	*/
	90	static int omap_ohci_transceiver_power(int on)
	91	{
	92	if (on) {
	93	if (machine_is_omap_innovator() && cpu_is_omap1510())
	94	fpga_write(fpga_read(INNOVATOR_FPGA_CAM_USB_CONTROL)
bd35078f	95	\| ((1 << 5/usb1/) \| (1 << 3/usb2/)),
1da177e4 LT	96	INNOVATOR_FPGA_CAM_USB_CONTROL);
	97	else if (machine_is_omap_osk())
	98	tps65010_set_gpio_out_value(GPIO1, LOW);
	99	} else {
	100	if (machine_is_omap_innovator() && cpu_is_omap1510())
	101	fpga_write(fpga_read(INNOVATOR_FPGA_CAM_USB_CONTROL)
bd35078f	102	& ~((1 << 5/usb1/) \| (1 << 3/usb2/)),
1da177e4 LT	103	INNOVATOR_FPGA_CAM_USB_CONTROL);
	104	else if (machine_is_omap_osk())
	105	tps65010_set_gpio_out_value(GPIO1, HIGH);
	106	}
	107
	108	return 0;
	109	}
	110
bd35078f	111	#ifdef CONFIG_ARCH_OMAP15XX
1da177e4 LT	112	/*
	113	* OMAP-1510 specific Local Bus clock on/off
	114	*/
	115	static int omap_1510_local_bus_power(int on)
	116	{
	117	if (on) {
	118	omap_writel((1 << 1) \| (1 << 0), OMAP1510_LB_MMU_CTL);
	119	udelay(200);
	120	} else {
	121	omap_writel(0, OMAP1510_LB_MMU_CTL);
	122	}
	123
	124	return 0;
	125	}
	126
	127	/*
	128	* OMAP-1510 specific Local Bus initialization
	129	* NOTE: This assumes 32MB memory size in OMAP1510LB_MEMSIZE.
bd35078f DB	130	* See also arch/mach-omap/memory.h for __virt_to_dma() and
bd35078f DB	131	* __dma_to_virt() which need to match with the physical
1da177e4 LT	132	* Local Bus address below.
	133	*/
	134	static int omap_1510_local_bus_init(void)
	135	{
	136	unsigned int tlb;
	137	unsigned long lbaddr, physaddr;
	138
bd35078f	139	omap_writel((omap_readl(OMAP1510_LB_CLOCK_DIV) & 0xfffffff8) \| 0x4,
1da177e4 LT	140	OMAP1510_LB_CLOCK_DIV);
	141
	142	/* Configure the Local Bus MMU table */
	143	for (tlb = 0; tlb < OMAP1510_LB_MEMSIZE; tlb++) {
	144	lbaddr = tlb * 0x00100000 + OMAP1510_LB_OFFSET;
	145	physaddr = tlb * 0x00100000 + PHYS_OFFSET;
	146	omap_writel((lbaddr & 0x0fffffff) >> 22, OMAP1510_LB_MMU_CAM_H);
bd35078f	147	omap_writel(((lbaddr & 0x003ffc00) >> 6) \| 0xc,
1da177e4 LT	148	OMAP1510_LB_MMU_CAM_L);
	149	omap_writel(physaddr >> 16, OMAP1510_LB_MMU_RAM_H);
	150	omap_writel((physaddr & 0x0000fc00) \| 0x300, OMAP1510_LB_MMU_RAM_L);
	151	omap_writel(tlb << 4, OMAP1510_LB_MMU_LCK);
	152	omap_writel(0x1, OMAP1510_LB_MMU_LD_TLB);
	153	}
	154
	155	/* Enable the walking table */
	156	omap_writel(omap_readl(OMAP1510_LB_MMU_CTL) \| (1 << 3), OMAP1510_LB_MMU_CTL);
	157	udelay(200);
	158
	159	return 0;
	160	}
bd35078f DB	161	#else
	162	#define omap_1510_local_bus_power(x) {}
	163	#define omap_1510_local_bus_init() {}
	164	#endif
1da177e4 LT	165
	166	#ifdef CONFIG_USB_OTG
	167
	168	static void start_hnp(struct ohci_hcd *ohci)
	169	{
	170	const unsigned port = ohci_to_hcd(ohci)->self.otg_port - 1;
	171	unsigned long flags;
f35ae634	172	u32 l;
1da177e4 LT	173
	174	otg_start_hnp(ohci->transceiver);
	175
	176	local_irq_save(flags);
	177	ohci->transceiver->state = OTG_STATE_A_SUSPEND;
	178	writel (RH_PS_PSS, &ohci->regs->roothub.portstatus [port]);
f35ae634 TL	179	l = omap_readl(OTG_CTRL);
	180	l &= ~OTG_A_BUSREQ;
	181	omap_writel(l, OTG_CTRL);
1da177e4 LT	182	local_irq_restore(flags);
	183	}
	184
	185	#endif
	186
	187	/-------------------------------------------------------------------------/
	188
bd35078f	189	static int ohci_omap_init(struct usb_hcd *hcd)
1da177e4	190	{
bd35078f DB	191	struct ohci_hcd *ohci = hcd_to_ohci(hcd);
bd35078f DB	192	struct omap_usb_config *config = hcd->self.controller->platform_data;
1da177e4 LT	193	int need_transceiver = (config->otg != 0);
	194	int ret;
	195
bd35078f	196	dev_dbg(hcd->self.controller, "starting USB Controller\n");
1da177e4 LT	197
	198	if (config->otg) {
	199	ohci_to_hcd(ohci)->self.otg_port = config->otg;
	200	/* default/minimum OTG power budget: 8 mA */
bc96c0ad	201	ohci_to_hcd(ohci)->power_budget = 8;
1da177e4 LT	202	}
	203
	204	/* boards can use OTG transceivers in non-OTG modes */
	205	need_transceiver = need_transceiver
	206	\|\| machine_is_omap_h2() \|\| machine_is_omap_h3();
	207
	208	if (cpu_is_omap16xx())
	209	ocpi_enable();
	210
	211	#ifdef CONFIG_ARCH_OMAP_OTG
	212	if (need_transceiver) {
	213	ohci->transceiver = otg_get_transceiver();
	214	if (ohci->transceiver) {
	215	int status = otg_set_host(ohci->transceiver,
	216	&ohci_to_hcd(ohci)->self);
bd35078f	217	dev_dbg(hcd->self.controller, "init %s transceiver, status %d\n",
1da177e4 LT	218	ohci->transceiver->label, status);
	219	if (status) {
	220	if (ohci->transceiver)
	221	put_device(ohci->transceiver->dev);
	222	return status;
	223	}
	224	} else {
bd35078f	225	dev_err(hcd->self.controller, "can't find transceiver\n");
1da177e4 LT	226	return -ENODEV;
	227	}
	228	}
	229	#endif
	230
	231	omap_ohci_clock_power(1);
	232
	233	if (cpu_is_omap1510()) {
	234	omap_1510_local_bus_power(1);
	235	omap_1510_local_bus_init();
	236	}
	237
	238	if ((ret = ohci_init(ohci)) < 0)
	239	return ret;
	240
	241	/* board-specific power switching and overcurrent support */
	242	if (machine_is_omap_osk() \|\| machine_is_omap_innovator()) {
	243	u32 rh = roothub_a (ohci);
	244
	245	/* power switching (ganged by default) */
	246	rh &= ~RH_A_NPS;
	247
	248	/* TPS2045 switch for internal transceiver (port 1) */
	249	if (machine_is_omap_osk()) {
bc96c0ad	250	ohci_to_hcd(ohci)->power_budget = 250;
1da177e4 LT	251
	252	rh &= ~RH_A_NOCP;
	253
	254	/* gpio9 for overcurrent detction */
	255	omap_cfg_reg(W8_1610_GPIO9);
	256	omap_request_gpio(9);
	257	omap_set_gpio_direction(9, 1 /* IN */);
	258
	259	/* for paranoia's sake: disable USB.PUEN */
	260	omap_cfg_reg(W4_USB_HIGHZ);
	261	}
	262	ohci_writel(ohci, rh, &ohci->regs->roothub.a);
	263	distrust_firmware = 0;
bd35078f DB	264	} else if (machine_is_nokia770()) {
	265	/* We require a self-powered hub, which should have
	266	* plenty of power. */
	267	ohci_to_hcd(ohci)->power_budget = 0;
1da177e4 LT	268	}
	269
	270	/* FIXME khubd hub requests should manage power switching */
	271	omap_ohci_transceiver_power(1);
	272
	273	/* board init will have already handled HMC and mux setup.
	274	* any external transceiver should already be initialized
	275	* too, so all configured ports use the right signaling now.
	276	*/
	277
	278	return 0;
	279	}
	280
bd35078f	281	static void ohci_omap_stop(struct usb_hcd *hcd)
1da177e4	282	{
bd35078f	283	dev_dbg(hcd->self.controller, "stopping USB Controller\n");
1da177e4 LT	284	omap_ohci_clock_power(0);
	285	}
	286
	287
	288	/-------------------------------------------------------------------------/
	289
1da177e4 LT	290	/**
	291	* usb_hcd_omap_probe - initialize OMAP-based HCDs
	292	* Context: !in_interrupt()
	293	*
	294	* Allocates basic resources for this USB host controller, and
	295	* then invokes the start() method for the HCD associated with it
	296	* through the hotplug entry's driver_data.
	297	*/
bd35078f	298	static int usb_hcd_omap_probe (const struct hc_driver *driver,
1da177e4 LT	299	struct platform_device *pdev)
1da177e4 LT	300	{
48944738	301	int retval, irq;
1da177e4 LT	302	struct usb_hcd *hcd = 0;
	303	struct ohci_hcd *ohci;
	304
	305	if (pdev->num_resources != 2) {
bd35078f	306	printk(KERN_ERR "hcd probe: invalid num_resources: %i\n",
1da177e4 LT	307	pdev->num_resources);
	308	return -ENODEV;
	309	}
	310
bd35078f	311	if (pdev->resource[0].flags != IORESOURCE_MEM
1da177e4 LT	312	\|\| pdev->resource[1].flags != IORESOURCE_IRQ) {
	313	printk(KERN_ERR "hcd probe: invalid resource type\n");
	314	return -ENODEV;
	315	}
	316
	317	usb_host_ck = clk_get(0, "usb_hhc_ck");
	318	if (IS_ERR(usb_host_ck))
	319	return PTR_ERR(usb_host_ck);
	320
bd35078f DB	321	if (!cpu_is_omap1510())
	322	usb_dc_ck = clk_get(0, "usb_dc_ck");
	323	else
	324	usb_dc_ck = clk_get(0, "lb_ck");
	325
	326	if (IS_ERR(usb_dc_ck)) {
	327	clk_put(usb_host_ck);
	328	return PTR_ERR(usb_dc_ck);
	329	}
	330
	331
7071a3ce	332	hcd = usb_create_hcd (driver, &pdev->dev, dev_name(&pdev->dev));
1da177e4 LT	333	if (!hcd) {
	334	retval = -ENOMEM;
	335	goto err0;
	336	}
	337	hcd->rsrc_start = pdev->resource[0].start;
	338	hcd->rsrc_len = pdev->resource[0].end - pdev->resource[0].start + 1;
	339
	340	if (!request_mem_region(hcd->rsrc_start, hcd->rsrc_len, hcd_name)) {
	341	dev_dbg(&pdev->dev, "request_mem_region failed\n");
	342	retval = -EBUSY;
	343	goto err1;
	344	}
	345
	346	hcd->regs = (void __iomem *) (int) IO_ADDRESS(hcd->rsrc_start);
	347
	348	ohci = hcd_to_ohci(hcd);
	349	ohci_hcd_init(ohci);
	350
bd35078f DB	351	host_initialized = 0;
bd35078f DB	352	host_enabled = 1;
1da177e4	353
48944738 DV	354	irq = platform_get_irq(pdev, 0);
	355	if (irq < 0) {
	356	retval = -ENXIO;
	357	goto err2;
	358	}
d54b5caa	359	retval = usb_add_hcd(hcd, irq, IRQF_DISABLED);
bd35078f DB	360	if (retval)
	361	goto err2;
	362
	363	host_initialized = 1;
	364
	365	if (!host_enabled)
	366	omap_ohci_clock_power(0);
1da177e4	367
bd35078f	368	return 0;
1da177e4 LT	369	err2:
	370	release_mem_region(hcd->rsrc_start, hcd->rsrc_len);
	371	err1:
	372	usb_put_hcd(hcd);
	373	err0:
bd35078f	374	clk_put(usb_dc_ck);
1da177e4 LT	375	clk_put(usb_host_ck);
	376	return retval;
	377	}
	378
	379
	380	/* may be called with controller, bus, and devices active */
	381
	382	/**
	383	* usb_hcd_omap_remove - shutdown processing for OMAP-based HCDs
	384	* @dev: USB Host Controller being removed
	385	* Context: !in_interrupt()
	386	*
	387	* Reverses the effect of usb_hcd_omap_probe(), first invoking
	388	* the HCD's stop() method. It is always called from a thread
	389	* context, normally "rmmod", "apmd", or something similar.
1da177e4	390	*/
bd35078f DB	391	static inline void
bd35078f DB	392	usb_hcd_omap_remove (struct usb_hcd hcd, struct platform_device pdev)
1da177e4	393	{
bd35078f DB	394	struct ohci_hcd *ohci = hcd_to_ohci (hcd);
bd35078f DB	395
1da177e4	396	usb_remove_hcd(hcd);
bd35078f DB	397	if (ohci->transceiver) {
	398	(void) otg_set_host(ohci->transceiver, 0);
	399	put_device(ohci->transceiver->dev);
	400	}
1da177e4 LT	401	if (machine_is_omap_osk())
1da177e4 LT	402	omap_free_gpio(9);
1da177e4 LT	403	release_mem_region(hcd->rsrc_start, hcd->rsrc_len);
1da177e4 LT	404	usb_put_hcd(hcd);
bd35078f	405	clk_put(usb_dc_ck);
1da177e4 LT	406	clk_put(usb_host_ck);
	407	}
	408
	409	/-------------------------------------------------------------------------/
	410
bd35078f	411	static int
1da177e4 LT	412	ohci_omap_start (struct usb_hcd *hcd)
	413	{
	414	struct omap_usb_config *config;
	415	struct ohci_hcd *ohci = hcd_to_ohci (hcd);
	416	int ret;
	417
bd35078f DB	418	if (!host_enabled)
bd35078f DB	419	return 0;
1da177e4	420	config = hcd->self.controller->platform_data;
d413984a DB	421	if (config->otg \|\| config->rwc) {
d413984a DB	422	ohci->hc_control = OHCI_CTRL_RWC;
1da177e4	423	writel(OHCI_CTRL_RWC, &ohci->regs->control);
d413984a	424	}
1da177e4 LT	425
	426	if ((ret = ohci_run (ohci)) < 0) {
	427	dev_err(hcd->self.controller, "can't start\n");
	428	ohci_stop (hcd);
	429	return ret;
	430	}
	431	return 0;
	432	}
	433
	434	/-------------------------------------------------------------------------/
	435
	436	static const struct hc_driver ohci_omap_hc_driver = {
	437	.description = hcd_name,
	438	.product_desc = "OMAP OHCI",
	439	.hcd_priv_size = sizeof(struct ohci_hcd),
	440
	441	/*
	442	* generic hardware linkage
	443	*/
	444	.irq = ohci_irq,
	445	.flags = HCD_USB11 \| HCD_MEMORY,
	446
	447	/*
	448	* basic lifecycle operations
	449	*/
bd35078f	450	.reset = ohci_omap_init,
1da177e4	451	.start = ohci_omap_start,
bd35078f	452	.stop = ohci_omap_stop,
dd9048af	453	.shutdown = ohci_shutdown,
1da177e4 LT	454
	455	/*
	456	* managing i/o requests and associated device resources
	457	*/
	458	.urb_enqueue = ohci_urb_enqueue,
	459	.urb_dequeue = ohci_urb_dequeue,
	460	.endpoint_disable = ohci_endpoint_disable,
	461
	462	/*
	463	* scheduling support
	464	*/
	465	.get_frame_number = ohci_get_frame,
	466
	467	/*
	468	* root hub support
	469	*/
	470	.hub_status_data = ohci_hub_status_data,
	471	.hub_control = ohci_hub_control,
09ca8adb	472	.hub_irq_enable = ohci_rhsc_enable,
8ad7fe16	473	#ifdef CONFIG_PM
0c0382e3 AS	474	.bus_suspend = ohci_bus_suspend,
0c0382e3 AS	475	.bus_resume = ohci_bus_resume,
1da177e4 LT	476	#endif
	477	.start_port_reset = ohci_start_port_reset,
	478	};
	479
	480	/-------------------------------------------------------------------------/
	481
3ae5eaec	482	static int ohci_hcd_omap_drv_probe(struct platform_device *dev)
1da177e4	483	{
3ae5eaec	484	return usb_hcd_omap_probe(&ohci_omap_hc_driver, dev);
1da177e4 LT	485	}
1da177e4 LT	486
3ae5eaec	487	static int ohci_hcd_omap_drv_remove(struct platform_device *dev)
1da177e4	488	{
3ae5eaec	489	struct usb_hcd *hcd = platform_get_drvdata(dev);
1da177e4	490
3ae5eaec	491	usb_hcd_omap_remove(hcd, dev);
3ae5eaec	492	platform_set_drvdata(dev, NULL);
1da177e4 LT	493
	494	return 0;
	495	}
	496
	497	/-------------------------------------------------------------------------/
	498
	499	#ifdef CONFIG_PM
	500
3ae5eaec	501	static int ohci_omap_suspend(struct platform_device *dev, pm_message_t message)
1da177e4	502	{
3ae5eaec	503	struct ohci_hcd *ohci = hcd_to_ohci(platform_get_drvdata(dev));
f197b2c5 DB	504
	505	if (time_before(jiffies, ohci->next_statechange))
	506	msleep(5);
	507	ohci->next_statechange = jiffies;
	508
	509	omap_ohci_clock_power(0);
	510	ohci_to_hcd(ohci)->state = HC_STATE_SUSPENDED;
f197b2c5	511	return 0;
1da177e4 LT	512	}
1da177e4 LT	513
3ae5eaec	514	static int ohci_omap_resume(struct platform_device *dev)
1da177e4	515	{
43bbb7e0 AS	516	struct usb_hcd *hcd = platform_get_drvdata(dev);
43bbb7e0 AS	517	struct ohci_hcd *ohci = hcd_to_ohci(hcd);
1da177e4	518
b404a5b0 DB	519	if (time_before(jiffies, ohci->next_statechange))
	520	msleep(5);
	521	ohci->next_statechange = jiffies;
f197b2c5	522
b404a5b0	523	omap_ohci_clock_power(1);
43bbb7e0	524	ohci_finish_controller_resume(hcd);
f197b2c5	525	return 0;
1da177e4 LT	526	}
	527
	528	#endif
	529
	530	/-------------------------------------------------------------------------/
	531
	532	/*
	533	* Driver definition to register with the OMAP bus
	534	*/
3ae5eaec	535	static struct platform_driver ohci_hcd_omap_driver = {
1da177e4 LT	536	.probe = ohci_hcd_omap_drv_probe,
1da177e4 LT	537	.remove = ohci_hcd_omap_drv_remove,
dd9048af	538	.shutdown = usb_hcd_platform_shutdown,
1da177e4 LT	539	#ifdef CONFIG_PM
	540	.suspend = ohci_omap_suspend,
	541	.resume = ohci_omap_resume,
	542	#endif
3ae5eaec RK	543	.driver = {
	544	.owner = THIS_MODULE,
	545	.name = "ohci",
	546	},
1da177e4 LT	547	};
1da177e4 LT	548
f4fce61d	549	MODULE_ALIAS("platform:ohci");