[deliverable/linux.git] / drivers / usb / host / ehci-s5p.c

/*
 * SAMSUNG S5P USB HOST EHCI Controller
 *
 * Copyright (C) 2011 Samsung Electronics Co.Ltd
 * Author: Jingoo Han <jg1.han@samsung.com>
 * Author: Joonyoung Shim <jy0922.shim@samsung.com>
 *
 * This program is free software; you can redistribute  it and/or modify it
 * under  the terms of  the GNU General  Public License as published by the
 * Free Software Foundation;  either version 2 of the  License, or (at your
 * option) any later version.
 *
 */

#include <linux/clk.h>
#include <linux/dma-mapping.h>
#include <linux/io.h>
#include <linux/kernel.h>
#include <linux/module.h>
#include <linux/of.h>
#include <linux/of_gpio.h>
#include <linux/platform_device.h>
#include <linux/platform_data/usb-ehci-s5p.h>
#include <linux/usb/phy.h>
#include <linux/usb/samsung_usb_phy.h>
#include <plat/usb-phy.h>
#include <linux/usb.h>
#include <linux/usb/hcd.h>
#include <linux/usb/otg.h>

#include "ehci.h"

#define DRIVER_DESC "EHCI s5p driver"

#define EHCI_INSNREG00(base)			(base + 0x90)
#define EHCI_INSNREG00_ENA_INCR16		(0x1 << 25)
#define EHCI_INSNREG00_ENA_INCR8		(0x1 << 24)
#define EHCI_INSNREG00_ENA_INCR4		(0x1 << 23)
#define EHCI_INSNREG00_ENA_INCRX_ALIGN		(0x1 << 22)
#define EHCI_INSNREG00_ENABLE_DMA_BURST	\
	(EHCI_INSNREG00_ENA_INCR16 | EHCI_INSNREG00_ENA_INCR8 |	\
	 EHCI_INSNREG00_ENA_INCR4 | EHCI_INSNREG00_ENA_INCRX_ALIGN)

static const char hcd_name[] = "ehci-s5p";
static struct hc_driver __read_mostly s5p_ehci_hc_driver;

struct s5p_ehci_hcd {
	struct clk *clk;
	struct usb_phy *phy;
	struct usb_otg *otg;
	struct s5p_ehci_platdata *pdata;
};

#define to_s5p_ehci(hcd)      (struct s5p_ehci_hcd *)(hcd_to_ehci(hcd)->priv)

static void s5p_setup_vbus_gpio(struct platform_device *pdev)
{
	struct device *dev = &pdev->dev;
	int err;
	int gpio;

	if (!dev->of_node)
		return;

	gpio = of_get_named_gpio(dev->of_node, "samsung,vbus-gpio", 0);
	if (!gpio_is_valid(gpio))
		return;

	err = devm_gpio_request_one(dev, gpio, GPIOF_OUT_INIT_HIGH,
				    "ehci_vbus_gpio");
	if (err)
		dev_err(dev, "can't request ehci vbus gpio %d", gpio);
}

static u64 ehci_s5p_dma_mask = DMA_BIT_MASK(32);

static int s5p_ehci_probe(struct platform_device *pdev)
{
	struct s5p_ehci_platdata *pdata = pdev->dev.platform_data;
	struct s5p_ehci_hcd *s5p_ehci;
	struct usb_hcd *hcd;
	struct ehci_hcd *ehci;
	struct resource *res;
	struct usb_phy *phy;
	int irq;
	int err;

	/*
	 * Right now device-tree probed devices don't get dma_mask set.
	 * Since shared usb code relies on it, set it here for now.
	 * Once we move to full device tree support this will vanish off.
	 */
	if (!pdev->dev.dma_mask)
		pdev->dev.dma_mask = &ehci_s5p_dma_mask;
	if (!pdev->dev.coherent_dma_mask)
		pdev->dev.coherent_dma_mask = DMA_BIT_MASK(32);

	s5p_setup_vbus_gpio(pdev);

	hcd = usb_create_hcd(&s5p_ehci_hc_driver,
			     &pdev->dev, dev_name(&pdev->dev));
	if (!hcd) {
		dev_err(&pdev->dev, "Unable to create HCD\n");
		return -ENOMEM;
	}
	s5p_ehci = to_s5p_ehci(hcd);
	phy = devm_usb_get_phy(&pdev->dev, USB_PHY_TYPE_USB2);
	if (IS_ERR(phy)) {
		/* Fallback to pdata */
		if (!pdata) {
			dev_warn(&pdev->dev, "no platform data or transceiver defined\n");
			return -EPROBE_DEFER;
		} else {
			s5p_ehci->pdata = pdata;
		}
	} else {
		s5p_ehci->phy = phy;
		s5p_ehci->otg = phy->otg;
	}

	s5p_ehci->clk = devm_clk_get(&pdev->dev, "usbhost");

	if (IS_ERR(s5p_ehci->clk)) {
		dev_err(&pdev->dev, "Failed to get usbhost clock\n");
		err = PTR_ERR(s5p_ehci->clk);
		goto fail_clk;
	}

	err = clk_prepare_enable(s5p_ehci->clk);
	if (err)
		goto fail_clk;

	res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
	if (!res) {
		dev_err(&pdev->dev, "Failed to get I/O memory\n");
		err = -ENXIO;
		goto fail_io;
	}

	hcd->rsrc_start = res->start;
	hcd->rsrc_len = resource_size(res);
	hcd->regs = devm_ioremap(&pdev->dev, res->start, hcd->rsrc_len);
	if (!hcd->regs) {
		dev_err(&pdev->dev, "Failed to remap I/O memory\n");
		err = -ENOMEM;
		goto fail_io;
	}

	irq = platform_get_irq(pdev, 0);
	if (!irq) {
		dev_err(&pdev->dev, "Failed to get IRQ\n");
		err = -ENODEV;
		goto fail_io;
	}

	if (s5p_ehci->otg)
		s5p_ehci->otg->set_host(s5p_ehci->otg, &hcd->self);

	if (s5p_ehci->phy)
		usb_phy_init(s5p_ehci->phy);
	else if (s5p_ehci->pdata->phy_init)
		s5p_ehci->pdata->phy_init(pdev, USB_PHY_TYPE_HOST);

	ehci = hcd_to_ehci(hcd);
	ehci->caps = hcd->regs;

	/* DMA burst Enable */
	writel(EHCI_INSNREG00_ENABLE_DMA_BURST, EHCI_INSNREG00(hcd->regs));

	err = usb_add_hcd(hcd, irq, IRQF_SHARED);
	if (err) {
		dev_err(&pdev->dev, "Failed to add USB HCD\n");
		goto fail_add_hcd;
	}

	platform_set_drvdata(pdev, s5p_ehci);

	return 0;

fail_add_hcd:
	if (s5p_ehci->phy)
		usb_phy_shutdown(s5p_ehci->phy);
	else if (s5p_ehci->pdata->phy_exit)
		s5p_ehci->pdata->phy_exit(pdev, USB_PHY_TYPE_HOST);
fail_io:
	clk_disable_unprepare(s5p_ehci->clk);
fail_clk:
	usb_put_hcd(hcd);
	return err;
}

static int s5p_ehci_remove(struct platform_device *pdev)
{
	struct usb_hcd *hcd = platform_get_drvdata(pdev);
	struct s5p_ehci_hcd *s5p_ehci = to_s5p_ehci(hcd);

	usb_remove_hcd(hcd);

	if (s5p_ehci->otg)
		s5p_ehci->otg->set_host(s5p_ehci->otg, &hcd->self);

	if (s5p_ehci->phy)
		usb_phy_shutdown(s5p_ehci->phy);
	else if (s5p_ehci->pdata->phy_exit)
		s5p_ehci->pdata->phy_exit(pdev, USB_PHY_TYPE_HOST);

	clk_disable_unprepare(s5p_ehci->clk);

	usb_put_hcd(hcd);

	return 0;
}

static void s5p_ehci_shutdown(struct platform_device *pdev)
{
	struct usb_hcd *hcd = platform_get_drvdata(pdev);

	if (hcd->driver->shutdown)
		hcd->driver->shutdown(hcd);
}

#ifdef CONFIG_PM
static int s5p_ehci_suspend(struct device *dev)
{
	struct usb_hcd *hcd = dev_get_drvdata(dev);
	struct s5p_ehci_hcd *s5p_ehci = to_s5p_ehci(hcd);
	struct platform_device *pdev = to_platform_device(dev);

	bool do_wakeup = device_may_wakeup(dev);
	int rc;

	rc = ehci_suspend(hcd, do_wakeup);

	if (s5p_ehci->otg)
		s5p_ehci->otg->set_host(s5p_ehci->otg, &hcd->self);

	if (s5p_ehci->phy)
		usb_phy_shutdown(s5p_ehci->phy);
	else if (s5p_ehci->pdata->phy_exit)
		s5p_ehci->pdata->phy_exit(pdev, USB_PHY_TYPE_HOST);

	clk_disable_unprepare(s5p_ehci->clk);

	return rc;
}

static int s5p_ehci_resume(struct device *dev)
{
	struct usb_hcd *hcd = dev_get_drvdata(dev);
	struct  s5p_ehci_hcd *s5p_ehci = to_s5p_ehci(hcd);
	struct platform_device *pdev = to_platform_device(dev);

	clk_prepare_enable(s5p_ehci->clk);

	if (s5p_ehci->otg)
		s5p_ehci->otg->set_host(s5p_ehci->otg, &hcd->self);

	if (s5p_ehci->phy)
		usb_phy_init(s5p_ehci->phy);
	else if (s5p_ehci->pdata->phy_init)
		s5p_ehci->pdata->phy_init(pdev, USB_PHY_TYPE_HOST);

	/* DMA burst Enable */
	writel(EHCI_INSNREG00_ENABLE_DMA_BURST, EHCI_INSNREG00(hcd->regs));

	ehci_resume(hcd, false);
	return 0;
}
#else
#define s5p_ehci_suspend	NULL
#define s5p_ehci_resume		NULL
#endif

static const struct dev_pm_ops s5p_ehci_pm_ops = {
	.suspend	= s5p_ehci_suspend,
	.resume		= s5p_ehci_resume,
};

#ifdef CONFIG_OF
static const struct of_device_id exynos_ehci_match[] = {
	{ .compatible = "samsung,exynos4210-ehci" },
	{},
};
MODULE_DEVICE_TABLE(of, exynos_ehci_match);
#endif

static struct platform_driver s5p_ehci_driver = {
	.probe		= s5p_ehci_probe,
	.remove		= s5p_ehci_remove,
	.shutdown	= s5p_ehci_shutdown,
	.driver = {
		.name	= "s5p-ehci",
		.owner	= THIS_MODULE,
		.pm	= &s5p_ehci_pm_ops,
		.of_match_table = of_match_ptr(exynos_ehci_match),
	}
};
static const struct ehci_driver_overrides s5p_overrides __initdata = {
	.extra_priv_size = sizeof(struct s5p_ehci_hcd),
};

static int __init ehci_s5p_init(void)
{
	if (usb_disabled())
		return -ENODEV;

	pr_info("%s: " DRIVER_DESC "\n", hcd_name);
	ehci_init_driver(&s5p_ehci_hc_driver, &s5p_overrides);
	return platform_driver_register(&s5p_ehci_driver);
}
module_init(ehci_s5p_init);

static void __exit ehci_s5p_cleanup(void)
{
	platform_driver_unregister(&s5p_ehci_driver);
}
module_exit(ehci_s5p_cleanup);

MODULE_DESCRIPTION(DRIVER_DESC);
MODULE_ALIAS("platform:s5p-ehci");
MODULE_AUTHOR("Jingoo Han");
MODULE_AUTHOR("Joonyoung Shim");
MODULE_LICENSE("GPL v2");
Commit	Line	Data
1bcc5aa8 JS	1	/*
	2	* SAMSUNG S5P USB HOST EHCI Controller
	3	*
	4	* Copyright (C) 2011 Samsung Electronics Co.Ltd
	5	* Author: Jingoo Han <jg1.han@samsung.com>
	6	* Author: Joonyoung Shim <jy0922.shim@samsung.com>
	7	*
	8	* This program is free software; you can redistribute it and/or modify it
	9	* under the terms of the GNU General Public License as published by the
	10	* Free Software Foundation; either version 2 of the License, or (at your
	11	* option) any later version.
	12	*
	13	*/
	14
	15	#include <linux/clk.h>
7edb3daf MG	16	#include <linux/dma-mapping.h>
	17	#include <linux/io.h>
	18	#include <linux/kernel.h>
	19	#include <linux/module.h>
2c026e2b	20	#include <linux/of.h>
fd81d59c	21	#include <linux/of_gpio.h>
7edb3daf	22	#include <linux/platform_device.h>
436d42c6	23	#include <linux/platform_data/usb-ehci-s5p.h>
d233c196	24	#include <linux/usb/phy.h>
b506eebc	25	#include <linux/usb/samsung_usb_phy.h>
1bcc5aa8	26	#include <plat/usb-phy.h>
7edb3daf MG	27	#include <linux/usb.h>
	28	#include <linux/usb/hcd.h>
	29	#include <linux/usb/otg.h>
	30
	31	#include "ehci.h"
	32
	33	#define DRIVER_DESC "EHCI s5p driver"
1bcc5aa8	34
88555a63 JH	35	#define EHCI_INSNREG00(base) (base + 0x90)
	36	#define EHCI_INSNREG00_ENA_INCR16 (0x1 << 25)
	37	#define EHCI_INSNREG00_ENA_INCR8 (0x1 << 24)
	38	#define EHCI_INSNREG00_ENA_INCR4 (0x1 << 23)
	39	#define EHCI_INSNREG00_ENA_INCRX_ALIGN (0x1 << 22)
	40	#define EHCI_INSNREG00_ENABLE_DMA_BURST \
	41	(EHCI_INSNREG00_ENA_INCR16 \| EHCI_INSNREG00_ENA_INCR8 \| \
	42	EHCI_INSNREG00_ENA_INCR4 \| EHCI_INSNREG00_ENA_INCRX_ALIGN)
	43
7edb3daf MG	44	static const char hcd_name[] = "ehci-s5p";
	45	static struct hc_driver __read_mostly s5p_ehci_hc_driver;
	46
1bcc5aa8	47	struct s5p_ehci_hcd {
1bcc5aa8	48	struct clk *clk;
d233c196 VG	49	struct usb_phy *phy;
	50	struct usb_otg *otg;
	51	struct s5p_ehci_platdata *pdata;
1bcc5aa8 JS	52	};
1bcc5aa8 JS	53
7edb3daf	54	#define to_s5p_ehci(hcd) (struct s5p_ehci_hcd *)(hcd_to_ehci(hcd)->priv)
d233c196	55
fd81d59c VG	56	static void s5p_setup_vbus_gpio(struct platform_device *pdev)
fd81d59c VG	57	{
3f3b55bf	58	struct device *dev = &pdev->dev;
fd81d59c VG	59	int err;
	60	int gpio;
	61
3f3b55bf	62	if (!dev->of_node)
fd81d59c VG	63	return;
fd81d59c VG	64
3f3b55bf	65	gpio = of_get_named_gpio(dev->of_node, "samsung,vbus-gpio", 0);
fd81d59c VG	66	if (!gpio_is_valid(gpio))
	67	return;
	68
3f3b55bf DA	69	err = devm_gpio_request_one(dev, gpio, GPIOF_OUT_INIT_HIGH,
3f3b55bf DA	70	"ehci_vbus_gpio");
fd81d59c	71	if (err)
3f3b55bf	72	dev_err(dev, "can't request ehci vbus gpio %d", gpio);
fd81d59c VG	73	}
fd81d59c VG	74
2c026e2b VG	75	static u64 ehci_s5p_dma_mask = DMA_BIT_MASK(32);
2c026e2b VG	76
41ac7b3a	77	static int s5p_ehci_probe(struct platform_device *pdev)
1bcc5aa8	78	{
d233c196	79	struct s5p_ehci_platdata *pdata = pdev->dev.platform_data;
1bcc5aa8 JS	80	struct s5p_ehci_hcd *s5p_ehci;
	81	struct usb_hcd *hcd;
	82	struct ehci_hcd *ehci;
	83	struct resource *res;
d233c196	84	struct usb_phy *phy;
1bcc5aa8 JS	85	int irq;
	86	int err;
	87
2c026e2b VG	88	/*
	89	* Right now device-tree probed devices don't get dma_mask set.
	90	* Since shared usb code relies on it, set it here for now.
	91	* Once we move to full device tree support this will vanish off.
	92	*/
	93	if (!pdev->dev.dma_mask)
	94	pdev->dev.dma_mask = &ehci_s5p_dma_mask;
	95	if (!pdev->dev.coherent_dma_mask)
	96	pdev->dev.coherent_dma_mask = DMA_BIT_MASK(32);
	97
fd81d59c VG	98	s5p_setup_vbus_gpio(pdev);
fd81d59c VG	99
7edb3daf MG	100	hcd = usb_create_hcd(&s5p_ehci_hc_driver,
	101	&pdev->dev, dev_name(&pdev->dev));
	102	if (!hcd) {
	103	dev_err(&pdev->dev, "Unable to create HCD\n");
1bcc5aa8	104	return -ENOMEM;
7edb3daf MG	105	}
7edb3daf MG	106	s5p_ehci = to_s5p_ehci(hcd);
d233c196	107	phy = devm_usb_get_phy(&pdev->dev, USB_PHY_TYPE_USB2);
a16283e1	108	if (IS_ERR(phy)) {
d233c196 VG	109	/* Fallback to pdata */
	110	if (!pdata) {
	111	dev_warn(&pdev->dev, "no platform data or transceiver defined\n");
	112	return -EPROBE_DEFER;
	113	} else {
	114	s5p_ehci->pdata = pdata;
	115	}
	116	} else {
	117	s5p_ehci->phy = phy;
	118	s5p_ehci->otg = phy->otg;
	119	}
	120
63fd0ae4	121	s5p_ehci->clk = devm_clk_get(&pdev->dev, "usbhost");
1bcc5aa8 JS	122
	123	if (IS_ERR(s5p_ehci->clk)) {
	124	dev_err(&pdev->dev, "Failed to get usbhost clock\n");
	125	err = PTR_ERR(s5p_ehci->clk);
	126	goto fail_clk;
	127	}
	128
e1deb56c	129	err = clk_prepare_enable(s5p_ehci->clk);
1bcc5aa8	130	if (err)
63fd0ae4	131	goto fail_clk;
1bcc5aa8 JS	132
	133	res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
	134	if (!res) {
	135	dev_err(&pdev->dev, "Failed to get I/O memory\n");
	136	err = -ENXIO;
	137	goto fail_io;
	138	}
	139
	140	hcd->rsrc_start = res->start;
	141	hcd->rsrc_len = resource_size(res);
9cb07563	142	hcd->regs = devm_ioremap(&pdev->dev, res->start, hcd->rsrc_len);
1bcc5aa8 JS	143	if (!hcd->regs) {
	144	dev_err(&pdev->dev, "Failed to remap I/O memory\n");
	145	err = -ENOMEM;
	146	goto fail_io;
	147	}
	148
	149	irq = platform_get_irq(pdev, 0);
	150	if (!irq) {
	151	dev_err(&pdev->dev, "Failed to get IRQ\n");
	152	err = -ENODEV;
9cb07563	153	goto fail_io;
1bcc5aa8 JS	154	}
1bcc5aa8 JS	155
d233c196	156	if (s5p_ehci->otg)
7edb3daf	157	s5p_ehci->otg->set_host(s5p_ehci->otg, &hcd->self);
d233c196	158
7edb3daf MG	159	if (s5p_ehci->phy)
	160	usb_phy_init(s5p_ehci->phy);
	161	else if (s5p_ehci->pdata->phy_init)
	162	s5p_ehci->pdata->phy_init(pdev, USB_PHY_TYPE_HOST);
1bcc5aa8 JS	163
	164	ehci = hcd_to_ehci(hcd);
	165	ehci->caps = hcd->regs;
1bcc5aa8	166
88555a63 JH	167	/* DMA burst Enable */
	168	writel(EHCI_INSNREG00_ENABLE_DMA_BURST, EHCI_INSNREG00(hcd->regs));
	169
b5dd18d8	170	err = usb_add_hcd(hcd, irq, IRQF_SHARED);
1bcc5aa8 JS	171	if (err) {
1bcc5aa8 JS	172	dev_err(&pdev->dev, "Failed to add USB HCD\n");
d233c196	173	goto fail_add_hcd;
1bcc5aa8 JS	174	}
	175
	176	platform_set_drvdata(pdev, s5p_ehci);
	177
	178	return 0;
	179
d233c196	180	fail_add_hcd:
7edb3daf MG	181	if (s5p_ehci->phy)
	182	usb_phy_shutdown(s5p_ehci->phy);
	183	else if (s5p_ehci->pdata->phy_exit)
	184	s5p_ehci->pdata->phy_exit(pdev, USB_PHY_TYPE_HOST);
1bcc5aa8	185	fail_io:
e1deb56c	186	clk_disable_unprepare(s5p_ehci->clk);
1bcc5aa8 JS	187	fail_clk:
1bcc5aa8 JS	188	usb_put_hcd(hcd);
1bcc5aa8 JS	189	return err;
	190	}
	191
fb4e98ab	192	static int s5p_ehci_remove(struct platform_device *pdev)
1bcc5aa8	193	{
7edb3daf MG	194	struct usb_hcd *hcd = platform_get_drvdata(pdev);
7edb3daf MG	195	struct s5p_ehci_hcd *s5p_ehci = to_s5p_ehci(hcd);
1bcc5aa8 JS	196
	197	usb_remove_hcd(hcd);
	198
d233c196	199	if (s5p_ehci->otg)
7edb3daf	200	s5p_ehci->otg->set_host(s5p_ehci->otg, &hcd->self);
d233c196	201
7edb3daf MG	202	if (s5p_ehci->phy)
	203	usb_phy_shutdown(s5p_ehci->phy);
	204	else if (s5p_ehci->pdata->phy_exit)
	205	s5p_ehci->pdata->phy_exit(pdev, USB_PHY_TYPE_HOST);
1bcc5aa8	206
e1deb56c	207	clk_disable_unprepare(s5p_ehci->clk);
1bcc5aa8 JS	208
1bcc5aa8 JS	209	usb_put_hcd(hcd);
1bcc5aa8 JS	210
	211	return 0;
	212	}
	213
	214	static void s5p_ehci_shutdown(struct platform_device *pdev)
	215	{
7edb3daf	216	struct usb_hcd *hcd = platform_get_drvdata(pdev);
1bcc5aa8 JS	217
	218	if (hcd->driver->shutdown)
	219	hcd->driver->shutdown(hcd);
	220	}
	221
1acb30ef JH	222	#ifdef CONFIG_PM
	223	static int s5p_ehci_suspend(struct device *dev)
	224	{
7edb3daf MG	225	struct usb_hcd *hcd = dev_get_drvdata(dev);
	226	struct s5p_ehci_hcd *s5p_ehci = to_s5p_ehci(hcd);
	227	struct platform_device *pdev = to_platform_device(dev);
	228
c5cf9212	229	bool do_wakeup = device_may_wakeup(dev);
c5cf9212	230	int rc;
1acb30ef	231
c5cf9212	232	rc = ehci_suspend(hcd, do_wakeup);
1acb30ef	233
d233c196	234	if (s5p_ehci->otg)
7edb3daf	235	s5p_ehci->otg->set_host(s5p_ehci->otg, &hcd->self);
d233c196	236
7edb3daf MG	237	if (s5p_ehci->phy)
	238	usb_phy_shutdown(s5p_ehci->phy);
	239	else if (s5p_ehci->pdata->phy_exit)
	240	s5p_ehci->pdata->phy_exit(pdev, USB_PHY_TYPE_HOST);
1acb30ef	241
e1deb56c	242	clk_disable_unprepare(s5p_ehci->clk);
8b4fc8c7	243
1acb30ef JH	244	return rc;
	245	}
	246
	247	static int s5p_ehci_resume(struct device *dev)
	248	{
7edb3daf MG	249	struct usb_hcd *hcd = dev_get_drvdata(dev);
	250	struct s5p_ehci_hcd *s5p_ehci = to_s5p_ehci(hcd);
	251	struct platform_device *pdev = to_platform_device(dev);
1acb30ef	252
e1deb56c	253	clk_prepare_enable(s5p_ehci->clk);
8b4fc8c7	254
d233c196	255	if (s5p_ehci->otg)
7edb3daf	256	s5p_ehci->otg->set_host(s5p_ehci->otg, &hcd->self);
d233c196	257
7edb3daf MG	258	if (s5p_ehci->phy)
	259	usb_phy_init(s5p_ehci->phy);
	260	else if (s5p_ehci->pdata->phy_init)
	261	s5p_ehci->pdata->phy_init(pdev, USB_PHY_TYPE_HOST);
1acb30ef	262
88555a63 JH	263	/* DMA burst Enable */
	264	writel(EHCI_INSNREG00_ENABLE_DMA_BURST, EHCI_INSNREG00(hcd->regs));
	265
c5cf9212	266	ehci_resume(hcd, false);
1acb30ef JH	267	return 0;
	268	}
	269	#else
	270	#define s5p_ehci_suspend NULL
	271	#define s5p_ehci_resume NULL
	272	#endif
	273
	274	static const struct dev_pm_ops s5p_ehci_pm_ops = {
	275	.suspend = s5p_ehci_suspend,
	276	.resume = s5p_ehci_resume,
	277	};
	278
2c026e2b VG	279	#ifdef CONFIG_OF
2c026e2b VG	280	static const struct of_device_id exynos_ehci_match[] = {
6e247777	281	{ .compatible = "samsung,exynos4210-ehci" },
2c026e2b VG	282	{},
	283	};
	284	MODULE_DEVICE_TABLE(of, exynos_ehci_match);
	285	#endif
	286
1bcc5aa8 JS	287	static struct platform_driver s5p_ehci_driver = {
1bcc5aa8 JS	288	.probe = s5p_ehci_probe,
7690417d	289	.remove = s5p_ehci_remove,
1bcc5aa8 JS	290	.shutdown = s5p_ehci_shutdown,
	291	.driver = {
	292	.name = "s5p-ehci",
	293	.owner = THIS_MODULE,
1acb30ef	294	.pm = &s5p_ehci_pm_ops,
2c026e2b	295	.of_match_table = of_match_ptr(exynos_ehci_match),
1bcc5aa8 JS	296	}
1bcc5aa8 JS	297	};
7edb3daf MG	298	static const struct ehci_driver_overrides s5p_overrides __initdata = {
	299	.extra_priv_size = sizeof(struct s5p_ehci_hcd),
	300	};
	301
	302	static int __init ehci_s5p_init(void)
	303	{
	304	if (usb_disabled())
	305	return -ENODEV;
	306
	307	pr_info("%s: " DRIVER_DESC "\n", hcd_name);
	308	ehci_init_driver(&s5p_ehci_hc_driver, &s5p_overrides);
	309	return platform_driver_register(&s5p_ehci_driver);
	310	}
	311	module_init(ehci_s5p_init);
	312
	313	static void __exit ehci_s5p_cleanup(void)
	314	{
	315	platform_driver_unregister(&s5p_ehci_driver);
	316	}
	317	module_exit(ehci_s5p_cleanup);
1bcc5aa8	318
7edb3daf	319	MODULE_DESCRIPTION(DRIVER_DESC);
1bcc5aa8	320	MODULE_ALIAS("platform:s5p-ehci");
7edb3daf MG	321	MODULE_AUTHOR("Jingoo Han");
	322	MODULE_AUTHOR("Joonyoung Shim");
	323	MODULE_LICENSE("GPL v2");