[mirror_ubuntu-artful-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/clk.h>
#include <linux/dma-mapping.h>
#include <linux/err.h>
#include <linux/gpio.h>
#include <linux/io.h>
#include <linux/jiffies.h>
#include <linux/kernel.h>
#include <linux/module.h>
#include <linux/usb/otg.h>
#include <linux/platform_device.h>
#include <linux/signal.h>
#include <linux/usb.h>
#include <linux/usb/hcd.h>

#include "ohci.h"

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

#include <mach/mux.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

#define DRIVER_DESC "OHCI OMAP driver"

#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 const char hcd_name[] = "ohci-omap";
static struct hc_driver __read_mostly ohci_omap_hc_driver;

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())
			__raw_writeb(__raw_readb(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())
			__raw_writeb(__raw_readb(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->usb_phy->otg);

	local_irq_save(flags);
	hcd->usb_phy->otg->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_reset(struct usb_hcd *hcd)
{
	struct ohci_hcd		*ohci = hcd_to_ohci(hcd);
	struct omap_usb_config	*config = dev_get_platdata(hcd->self.controller);
	int			need_transceiver = (config->otg != 0);
	int			ret;

	dev_dbg(hcd->self.controller, "starting USB Controller\n");

	if (config->otg) {
		hcd->self.otg_port = config->otg;
		/* default/minimum OTG power budget:  8 mA */
		hcd->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->usb_phy = usb_get_phy(USB_PHY_TYPE_USB2);
		if (!IS_ERR_OR_NULL(hcd->usb_phy)) {
			int	status = otg_set_host(hcd->usb_phy->otg,
						&ohci_to_hcd(ohci)->self);
			dev_dbg(hcd->self.controller, "init %s phy, status %d\n",
					hcd->usb_phy->label, status);
			if (status) {
				usb_put_phy(hcd->usb_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();
	}

	ret = ohci_setup(hcd);
	if (ret < 0)
		return ret;

	if (config->otg || config->rwc) {
		ohci->hc_control = OHCI_CTRL_RWC;
		writel(OHCI_CTRL_RWC, &ohci->regs->control);
	}

	/* 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 hub_wq 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;
}

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

/**
 * 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;

	if (pdev->num_resources != 2) {
		dev_err(&pdev->dev, "invalid num_resources: %i\n",
		       pdev->num_resources);
		return -ENODEV;
	}

	if (pdev->resource[0].flags != IORESOURCE_MEM
			|| pdev->resource[1].flags != IORESOURCE_IRQ) {
		dev_err(&pdev->dev, "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;
	}

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

	device_wakeup_enable(hcd->self.controller);
	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)
{
	dev_dbg(hcd->self.controller, "stopping USB Controller\n");
	usb_remove_hcd(hcd);
	omap_ohci_clock_power(0);
	if (!IS_ERR_OR_NULL(hcd->usb_phy)) {
		(void) otg_set_host(hcd->usb_phy->otg, 0);
		usb_put_phy(hcd->usb_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_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);

	return 0;
}

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

#ifdef	CONFIG_PM

static int ohci_omap_suspend(struct platform_device *pdev, pm_message_t message)
{
	struct usb_hcd *hcd = platform_get_drvdata(pdev);
	struct ohci_hcd *ohci = hcd_to_ohci(hcd);
	bool do_wakeup = device_may_wakeup(&pdev->dev);
	int ret;

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

	ret = ohci_suspend(hcd, do_wakeup);
	if (ret)
		return ret;

	omap_ohci_clock_power(0);
	return ret;
}

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_resume(hcd, false);
	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		= {
		.name	= "ohci",
	},
};

static const struct ohci_driver_overrides omap_overrides __initconst = {
	.product_desc	= "OMAP OHCI",
	.reset		= ohci_omap_reset
};

static int __init ohci_omap_init(void)
{
	if (usb_disabled())
		return -ENODEV;

	pr_info("%s: " DRIVER_DESC "\n", hcd_name);

	ohci_init_driver(&ohci_omap_hc_driver, &omap_overrides);
	return platform_driver_register(&ohci_hcd_omap_driver);
}
module_init(ohci_omap_init);

static void __exit ohci_omap_cleanup(void)
{
	platform_driver_unregister(&ohci_hcd_omap_driver);
}
module_exit(ohci_omap_cleanup);

MODULE_DESCRIPTION(DRIVER_DESC);
MODULE_ALIAS("platform:ohci");
MODULE_LICENSE("GPL");
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
f8ce2547	17	#include <linux/clk.h>
de57a154	18	#include <linux/dma-mapping.h>
ded017ee	19	#include <linux/err.h>
944e1bff	20	#include <linux/gpio.h>
de57a154 MG	21	#include <linux/io.h>
	22	#include <linux/jiffies.h>
	23	#include <linux/kernel.h>
	24	#include <linux/module.h>
	25	#include <linux/usb/otg.h>
	26	#include <linux/platform_device.h>
	27	#include <linux/signal.h>
	28	#include <linux/usb.h>
	29	#include <linux/usb/hcd.h>
	30
	31	#include "ohci.h"
4e57b681	32
1da177e4 LT	33	#include <asm/io.h>
	34	#include <asm/mach-types.h>
	35
70c494c3	36	#include <mach/mux.h>
b924b204 TL	37
	38	#include <mach/hardware.h>
	39	#include <mach/irqs.h>
	40	#include <mach/usb.h>
1da177e4 LT	41
	42
	43	/* OMAP-1510 OHCI has its own MMU for DMA */
	44	#define OMAP1510_LB_MEMSIZE 32 /* Should be same as SDRAM size */
	45	#define OMAP1510_LB_CLOCK_DIV 0xfffec10c
	46	#define OMAP1510_LB_MMU_CTL 0xfffec208
	47	#define OMAP1510_LB_MMU_LCK 0xfffec224
	48	#define OMAP1510_LB_MMU_LD_TLB 0xfffec228
	49	#define OMAP1510_LB_MMU_CAM_H 0xfffec22c
	50	#define OMAP1510_LB_MMU_CAM_L 0xfffec230
	51	#define OMAP1510_LB_MMU_RAM_H 0xfffec234
	52	#define OMAP1510_LB_MMU_RAM_L 0xfffec238
	53
de57a154	54	#define DRIVER_DESC "OHCI OMAP driver"
1da177e4 LT	55
1da177e4 LT	56	#ifdef CONFIG_TPS65010
6d16bfb5	57	#include <linux/i2c/tps65010.h>
1da177e4 LT	58	#else
	59
	60	#define LOW 0
	61	#define HIGH 1
	62
	63	#define GPIO1 1
	64
	65	static inline int tps65010_set_gpio_out_value(unsigned gpio, unsigned value)
	66	{
	67	return 0;
	68	}
	69
	70	#endif
	71
	72	extern int usb_disabled(void);
	73	extern int ocpi_enable(void);
	74
	75	static struct clk *usb_host_ck;
bd35078f	76	static struct clk *usb_dc_ck;
de57a154 MG	77
	78	static const char hcd_name[] = "ohci-omap";
	79	static struct hc_driver __read_mostly ohci_omap_hc_driver;
1da177e4 LT	80
	81	static void omap_ohci_clock_power(int on)
	82	{
	83	if (on) {
bd35078f	84	clk_enable(usb_dc_ck);
1da177e4 LT	85	clk_enable(usb_host_ck);
	86	/* guesstimate for T5 == 1x 32K clock + APLL lock time */
	87	udelay(100);
	88	} else {
	89	clk_disable(usb_host_ck);
bd35078f	90	clk_disable(usb_dc_ck);
1da177e4 LT	91	}
	92	}
	93
	94	/*
	95	* Board specific gang-switched transceiver power on/off.
	96	* NOTE: OSK supplies power from DC, not battery.
	97	*/
	98	static int omap_ohci_transceiver_power(int on)
	99	{
	100	if (on) {
	101	if (machine_is_omap_innovator() && cpu_is_omap1510())
4c98dc6b	102	__raw_writeb(__raw_readb(INNOVATOR_FPGA_CAM_USB_CONTROL)
bd35078f	103	\| ((1 << 5/usb1/) \| (1 << 3/usb2/)),
1da177e4 LT	104	INNOVATOR_FPGA_CAM_USB_CONTROL);
	105	else if (machine_is_omap_osk())
	106	tps65010_set_gpio_out_value(GPIO1, LOW);
	107	} else {
	108	if (machine_is_omap_innovator() && cpu_is_omap1510())
4c98dc6b	109	__raw_writeb(__raw_readb(INNOVATOR_FPGA_CAM_USB_CONTROL)
bd35078f	110	& ~((1 << 5/usb1/) \| (1 << 3/usb2/)),
1da177e4 LT	111	INNOVATOR_FPGA_CAM_USB_CONTROL);
	112	else if (machine_is_omap_osk())
	113	tps65010_set_gpio_out_value(GPIO1, HIGH);
	114	}
	115
	116	return 0;
	117	}
	118
bd35078f	119	#ifdef CONFIG_ARCH_OMAP15XX
1da177e4 LT	120	/*
	121	* OMAP-1510 specific Local Bus clock on/off
	122	*/
	123	static int omap_1510_local_bus_power(int on)
	124	{
	125	if (on) {
	126	omap_writel((1 << 1) \| (1 << 0), OMAP1510_LB_MMU_CTL);
	127	udelay(200);
	128	} else {
	129	omap_writel(0, OMAP1510_LB_MMU_CTL);
	130	}
	131
	132	return 0;
	133	}
	134
	135	/*
	136	* OMAP-1510 specific Local Bus initialization
	137	* NOTE: This assumes 32MB memory size in OMAP1510LB_MEMSIZE.
bd35078f DB	138	* See also arch/mach-omap/memory.h for __virt_to_dma() and
bd35078f DB	139	* __dma_to_virt() which need to match with the physical
1da177e4 LT	140	* Local Bus address below.
	141	*/
	142	static int omap_1510_local_bus_init(void)
	143	{
	144	unsigned int tlb;
	145	unsigned long lbaddr, physaddr;
	146
bd35078f	147	omap_writel((omap_readl(OMAP1510_LB_CLOCK_DIV) & 0xfffffff8) \| 0x4,
1da177e4 LT	148	OMAP1510_LB_CLOCK_DIV);
	149
	150	/* Configure the Local Bus MMU table */
	151	for (tlb = 0; tlb < OMAP1510_LB_MEMSIZE; tlb++) {
	152	lbaddr = tlb * 0x00100000 + OMAP1510_LB_OFFSET;
	153	physaddr = tlb * 0x00100000 + PHYS_OFFSET;
	154	omap_writel((lbaddr & 0x0fffffff) >> 22, OMAP1510_LB_MMU_CAM_H);
bd35078f	155	omap_writel(((lbaddr & 0x003ffc00) >> 6) \| 0xc,
1da177e4 LT	156	OMAP1510_LB_MMU_CAM_L);
	157	omap_writel(physaddr >> 16, OMAP1510_LB_MMU_RAM_H);
	158	omap_writel((physaddr & 0x0000fc00) \| 0x300, OMAP1510_LB_MMU_RAM_L);
	159	omap_writel(tlb << 4, OMAP1510_LB_MMU_LCK);
	160	omap_writel(0x1, OMAP1510_LB_MMU_LD_TLB);
	161	}
	162
	163	/* Enable the walking table */
	164	omap_writel(omap_readl(OMAP1510_LB_MMU_CTL) \| (1 << 3), OMAP1510_LB_MMU_CTL);
	165	udelay(200);
	166
	167	return 0;
	168	}
bd35078f DB	169	#else
	170	#define omap_1510_local_bus_power(x) {}
	171	#define omap_1510_local_bus_init() {}
	172	#endif
1da177e4 LT	173
	174	#ifdef CONFIG_USB_OTG
	175
	176	static void start_hnp(struct ohci_hcd *ohci)
	177	{
c2e935a7 RZ	178	struct usb_hcd *hcd = ohci_to_hcd(ohci);
c2e935a7 RZ	179	const unsigned port = hcd->self.otg_port - 1;
1da177e4	180	unsigned long flags;
f35ae634	181	u32 l;
1da177e4	182
3d46e73d	183	otg_start_hnp(hcd->usb_phy->otg);
1da177e4 LT	184
1da177e4 LT	185	local_irq_save(flags);
7e1bbeb4	186	hcd->usb_phy->otg->state = OTG_STATE_A_SUSPEND;
1da177e4	187	writel (RH_PS_PSS, &ohci->regs->roothub.portstatus [port]);
f35ae634 TL	188	l = omap_readl(OTG_CTRL);
	189	l &= ~OTG_A_BUSREQ;
	190	omap_writel(l, OTG_CTRL);
1da177e4 LT	191	local_irq_restore(flags);
	192	}
	193
	194	#endif
	195
	196	/-------------------------------------------------------------------------/
	197
de57a154	198	static int ohci_omap_reset(struct usb_hcd *hcd)
1da177e4	199	{
bd35078f	200	struct ohci_hcd *ohci = hcd_to_ohci(hcd);
d4f09e28	201	struct omap_usb_config *config = dev_get_platdata(hcd->self.controller);
1da177e4 LT	202	int need_transceiver = (config->otg != 0);
	203	int ret;
	204
bd35078f	205	dev_dbg(hcd->self.controller, "starting USB Controller\n");
1da177e4 LT	206
1da177e4 LT	207	if (config->otg) {
de57a154	208	hcd->self.otg_port = config->otg;
1da177e4	209	/* default/minimum OTG power budget: 8 mA */
de57a154	210	hcd->power_budget = 8;
1da177e4 LT	211	}
	212
	213	/* boards can use OTG transceivers in non-OTG modes */
	214	need_transceiver = need_transceiver
	215	\|\| machine_is_omap_h2() \|\| machine_is_omap_h3();
	216
d3645d39 PW	217	/* XXX OMAP16xx only */
	218	if (config->ocpi_enable)
	219	config->ocpi_enable();
1da177e4	220
c3df1a26	221	#ifdef CONFIG_USB_OTG
1da177e4	222	if (need_transceiver) {
3d46e73d AT	223	hcd->usb_phy = usb_get_phy(USB_PHY_TYPE_USB2);
	224	if (!IS_ERR_OR_NULL(hcd->usb_phy)) {
	225	int status = otg_set_host(hcd->usb_phy->otg,
1da177e4	226	&ohci_to_hcd(ohci)->self);
c2e935a7	227	dev_dbg(hcd->self.controller, "init %s phy, status %d\n",
3d46e73d	228	hcd->usb_phy->label, status);
1da177e4	229	if (status) {
3d46e73d	230	usb_put_phy(hcd->usb_phy);
1da177e4 LT	231	return status;
	232	}
	233	} else {
c2e935a7	234	dev_err(hcd->self.controller, "can't find phy\n");
1da177e4 LT	235	return -ENODEV;
1da177e4 LT	236	}
e8b24450	237	ohci->start_hnp = start_hnp;
1da177e4 LT	238	}
	239	#endif
	240
	241	omap_ohci_clock_power(1);
	242
9b466c3b	243	if (cpu_is_omap15xx()) {
1da177e4 LT	244	omap_1510_local_bus_power(1);
	245	omap_1510_local_bus_init();
	246	}
	247
de57a154 MG	248	ret = ohci_setup(hcd);
de57a154 MG	249	if (ret < 0)
1da177e4 LT	250	return ret;
1da177e4 LT	251
de57a154 MG	252	if (config->otg \|\| config->rwc) {
	253	ohci->hc_control = OHCI_CTRL_RWC;
	254	writel(OHCI_CTRL_RWC, &ohci->regs->control);
	255	}
	256
1da177e4 LT	257	/* board-specific power switching and overcurrent support */
	258	if (machine_is_omap_osk() \|\| machine_is_omap_innovator()) {
	259	u32 rh = roothub_a (ohci);
	260
	261	/* power switching (ganged by default) */
	262	rh &= ~RH_A_NPS;
	263
	264	/* TPS2045 switch for internal transceiver (port 1) */
	265	if (machine_is_omap_osk()) {
bc96c0ad	266	ohci_to_hcd(ohci)->power_budget = 250;
1da177e4 LT	267
	268	rh &= ~RH_A_NOCP;
	269
	270	/* gpio9 for overcurrent detction */
	271	omap_cfg_reg(W8_1610_GPIO9);
944e1bff	272	gpio_request(9, "OHCI overcurrent");
40e3925b	273	gpio_direction_input(9);
1da177e4 LT	274
	275	/* for paranoia's sake: disable USB.PUEN */
	276	omap_cfg_reg(W4_USB_HIGHZ);
	277	}
	278	ohci_writel(ohci, rh, &ohci->regs->roothub.a);
1133cd8a	279	ohci->flags &= ~OHCI_QUIRK_HUB_POWER;
bd35078f DB	280	} else if (machine_is_nokia770()) {
	281	/* We require a self-powered hub, which should have
	282	* plenty of power. */
	283	ohci_to_hcd(ohci)->power_budget = 0;
1da177e4 LT	284	}
1da177e4 LT	285
37ebb549	286	/* FIXME hub_wq hub requests should manage power switching */
1da177e4 LT	287	omap_ohci_transceiver_power(1);
	288
	289	/* board init will have already handled HMC and mux setup.
	290	* any external transceiver should already be initialized
	291	* too, so all configured ports use the right signaling now.
	292	*/
	293
	294	return 0;
	295	}
	296
1da177e4 LT	297	/-------------------------------------------------------------------------/
1da177e4 LT	298
1da177e4 LT	299	/**
	300	* usb_hcd_omap_probe - initialize OMAP-based HCDs
	301	* Context: !in_interrupt()
	302	*
	303	* Allocates basic resources for this USB host controller, and
	304	* then invokes the start() method for the HCD associated with it
	305	* through the hotplug entry's driver_data.
	306	*/
bd35078f	307	static int usb_hcd_omap_probe (const struct hc_driver *driver,
1da177e4 LT	308	struct platform_device *pdev)
1da177e4 LT	309	{
48944738	310	int retval, irq;
1da177e4	311	struct usb_hcd *hcd = 0;
1da177e4 LT	312
1da177e4 LT	313	if (pdev->num_resources != 2) {
0a3aa0d3	314	dev_err(&pdev->dev, "invalid num_resources: %i\n",
1da177e4 LT	315	pdev->num_resources);
	316	return -ENODEV;
	317	}
	318
bd35078f	319	if (pdev->resource[0].flags != IORESOURCE_MEM
1da177e4	320	\|\| pdev->resource[1].flags != IORESOURCE_IRQ) {
0a3aa0d3	321	dev_err(&pdev->dev, "invalid resource type\n");
1da177e4 LT	322	return -ENODEV;
	323	}
	324
953a7e84	325	usb_host_ck = clk_get(&pdev->dev, "usb_hhc_ck");
1da177e4 LT	326	if (IS_ERR(usb_host_ck))
	327	return PTR_ERR(usb_host_ck);
	328
9b466c3b	329	if (!cpu_is_omap15xx())
953a7e84	330	usb_dc_ck = clk_get(&pdev->dev, "usb_dc_ck");
bd35078f	331	else
953a7e84	332	usb_dc_ck = clk_get(&pdev->dev, "lb_ck");
bd35078f DB	333
	334	if (IS_ERR(usb_dc_ck)) {
	335	clk_put(usb_host_ck);
	336	return PTR_ERR(usb_dc_ck);
	337	}
	338
	339
7071a3ce	340	hcd = usb_create_hcd (driver, &pdev->dev, dev_name(&pdev->dev));
1da177e4 LT	341	if (!hcd) {
	342	retval = -ENOMEM;
	343	goto err0;
	344	}
	345	hcd->rsrc_start = pdev->resource[0].start;
	346	hcd->rsrc_len = pdev->resource[0].end - pdev->resource[0].start + 1;
	347
	348	if (!request_mem_region(hcd->rsrc_start, hcd->rsrc_len, hcd_name)) {
	349	dev_dbg(&pdev->dev, "request_mem_region failed\n");
	350	retval = -EBUSY;
	351	goto err1;
	352	}
	353
55c381e4 RK	354	hcd->regs = ioremap(hcd->rsrc_start, hcd->rsrc_len);
	355	if (!hcd->regs) {
	356	dev_err(&pdev->dev, "can't ioremap OHCI HCD\n");
	357	retval = -ENOMEM;
	358	goto err2;
	359	}
1da177e4	360
48944738 DV	361	irq = platform_get_irq(pdev, 0);
	362	if (irq < 0) {
	363	retval = -ENXIO;
55c381e4	364	goto err3;
48944738	365	}
b5dd18d8	366	retval = usb_add_hcd(hcd, irq, 0);
bd35078f	367	if (retval)
55c381e4	368	goto err3;
bd35078f	369
3c9740a1	370	device_wakeup_enable(hcd->self.controller);
bd35078f	371	return 0;
55c381e4 RK	372	err3:
55c381e4 RK	373	iounmap(hcd->regs);
1da177e4 LT	374	err2:
	375	release_mem_region(hcd->rsrc_start, hcd->rsrc_len);
	376	err1:
	377	usb_put_hcd(hcd);
	378	err0:
bd35078f	379	clk_put(usb_dc_ck);
1da177e4 LT	380	clk_put(usb_host_ck);
	381	return retval;
	382	}
	383
	384
	385	/* may be called with controller, bus, and devices active */
	386
	387	/**
	388	* usb_hcd_omap_remove - shutdown processing for OMAP-based HCDs
	389	* @dev: USB Host Controller being removed
	390	* Context: !in_interrupt()
	391	*
	392	* Reverses the effect of usb_hcd_omap_probe(), first invoking
	393	* the HCD's stop() method. It is always called from a thread
	394	* context, normally "rmmod", "apmd", or something similar.
1da177e4	395	*/
bd35078f DB	396	static inline void
bd35078f DB	397	usb_hcd_omap_remove (struct usb_hcd hcd, struct platform_device pdev)
1da177e4	398	{
de57a154	399	dev_dbg(hcd->self.controller, "stopping USB Controller\n");
1da177e4	400	usb_remove_hcd(hcd);
de57a154	401	omap_ohci_clock_power(0);
3d46e73d AT	402	if (!IS_ERR_OR_NULL(hcd->usb_phy)) {
	403	(void) otg_set_host(hcd->usb_phy->otg, 0);
	404	usb_put_phy(hcd->usb_phy);
bd35078f	405	}
1da177e4	406	if (machine_is_omap_osk())
944e1bff	407	gpio_free(9);
55c381e4	408	iounmap(hcd->regs);
1da177e4 LT	409	release_mem_region(hcd->rsrc_start, hcd->rsrc_len);
1da177e4 LT	410	usb_put_hcd(hcd);
bd35078f	411	clk_put(usb_dc_ck);
1da177e4 LT	412	clk_put(usb_host_ck);
	413	}
	414
	415	/-------------------------------------------------------------------------/
	416
3ae5eaec	417	static int ohci_hcd_omap_drv_probe(struct platform_device *dev)
1da177e4	418	{
3ae5eaec	419	return usb_hcd_omap_probe(&ohci_omap_hc_driver, dev);
1da177e4 LT	420	}
1da177e4 LT	421
3ae5eaec	422	static int ohci_hcd_omap_drv_remove(struct platform_device *dev)
1da177e4	423	{
3ae5eaec	424	struct usb_hcd *hcd = platform_get_drvdata(dev);
1da177e4	425
3ae5eaec	426	usb_hcd_omap_remove(hcd, dev);
1da177e4 LT	427
	428	return 0;
	429	}
	430
	431	/-------------------------------------------------------------------------/
	432
	433	#ifdef CONFIG_PM
	434
10abfa13	435	static int ohci_omap_suspend(struct platform_device *pdev, pm_message_t message)
1da177e4	436	{
10abfa13 MG	437	struct usb_hcd *hcd = platform_get_drvdata(pdev);
	438	struct ohci_hcd *ohci = hcd_to_ohci(hcd);
	439	bool do_wakeup = device_may_wakeup(&pdev->dev);
	440	int ret;
f197b2c5 DB	441
	442	if (time_before(jiffies, ohci->next_statechange))
	443	msleep(5);
	444	ohci->next_statechange = jiffies;
	445
10abfa13 MG	446	ret = ohci_suspend(hcd, do_wakeup);
	447	if (ret)
	448	return ret;
	449
f197b2c5	450	omap_ohci_clock_power(0);
10abfa13	451	return ret;
1da177e4 LT	452	}
1da177e4 LT	453
3ae5eaec	454	static int ohci_omap_resume(struct platform_device *dev)
1da177e4	455	{
43bbb7e0 AS	456	struct usb_hcd *hcd = platform_get_drvdata(dev);
43bbb7e0 AS	457	struct ohci_hcd *ohci = hcd_to_ohci(hcd);
1da177e4	458
b404a5b0 DB	459	if (time_before(jiffies, ohci->next_statechange))
	460	msleep(5);
	461	ohci->next_statechange = jiffies;
f197b2c5	462
b404a5b0	463	omap_ohci_clock_power(1);
cfa49b4b	464	ohci_resume(hcd, false);
f197b2c5	465	return 0;
1da177e4 LT	466	}
	467
	468	#endif
	469
	470	/-------------------------------------------------------------------------/
	471
	472	/*
	473	* Driver definition to register with the OMAP bus
	474	*/
3ae5eaec	475	static struct platform_driver ohci_hcd_omap_driver = {
1da177e4 LT	476	.probe = ohci_hcd_omap_drv_probe,
1da177e4 LT	477	.remove = ohci_hcd_omap_drv_remove,
dd9048af	478	.shutdown = usb_hcd_platform_shutdown,
1da177e4 LT	479	#ifdef CONFIG_PM
	480	.suspend = ohci_omap_suspend,
	481	.resume = ohci_omap_resume,
	482	#endif
3ae5eaec	483	.driver = {
3ae5eaec RK	484	.name = "ohci",
3ae5eaec RK	485	},
1da177e4 LT	486	};
1da177e4 LT	487
de57a154 MG	488	static const struct ohci_driver_overrides omap_overrides __initconst = {
	489	.product_desc = "OMAP OHCI",
	490	.reset = ohci_omap_reset
	491	};
	492
	493	static int __init ohci_omap_init(void)
	494	{
	495	if (usb_disabled())
	496	return -ENODEV;
	497
	498	pr_info("%s: " DRIVER_DESC "\n", hcd_name);
	499
	500	ohci_init_driver(&ohci_omap_hc_driver, &omap_overrides);
	501	return platform_driver_register(&ohci_hcd_omap_driver);
	502	}
	503	module_init(ohci_omap_init);
	504
	505	static void __exit ohci_omap_cleanup(void)
	506	{
	507	platform_driver_unregister(&ohci_hcd_omap_driver);
	508	}
	509	module_exit(ohci_omap_cleanup);
	510
	511	MODULE_DESCRIPTION(DRIVER_DESC);
f4fce61d	512	MODULE_ALIAS("platform:ohci");
de57a154	513	MODULE_LICENSE("GPL");