[GitHub/mt8127/android_kernel_alcatel_ttab.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 <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 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 = &pdev->dev.coherent_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) {
			usb_put_hcd(hcd);
			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, hcd);

	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>
7edb3daf MG	26	#include <linux/usb.h>
	27	#include <linux/usb/hcd.h>
	28	#include <linux/usb/otg.h>
	29
	30	#include "ehci.h"
	31
	32	#define DRIVER_DESC "EHCI s5p driver"
1bcc5aa8	33
88555a63 JH	34	#define EHCI_INSNREG00(base) (base + 0x90)
	35	#define EHCI_INSNREG00_ENA_INCR16 (0x1 << 25)
	36	#define EHCI_INSNREG00_ENA_INCR8 (0x1 << 24)
	37	#define EHCI_INSNREG00_ENA_INCR4 (0x1 << 23)
	38	#define EHCI_INSNREG00_ENA_INCRX_ALIGN (0x1 << 22)
	39	#define EHCI_INSNREG00_ENABLE_DMA_BURST \
	40	(EHCI_INSNREG00_ENA_INCR16 \| EHCI_INSNREG00_ENA_INCR8 \| \
	41	EHCI_INSNREG00_ENA_INCR4 \| EHCI_INSNREG00_ENA_INCRX_ALIGN)
	42
7edb3daf MG	43	static const char hcd_name[] = "ehci-s5p";
	44	static struct hc_driver __read_mostly s5p_ehci_hc_driver;
	45
1bcc5aa8	46	struct s5p_ehci_hcd {
1bcc5aa8	47	struct clk *clk;
d233c196 VG	48	struct usb_phy *phy;
	49	struct usb_otg *otg;
	50	struct s5p_ehci_platdata *pdata;
1bcc5aa8 JS	51	};
1bcc5aa8 JS	52
7edb3daf	53	#define to_s5p_ehci(hcd) (struct s5p_ehci_hcd *)(hcd_to_ehci(hcd)->priv)
d233c196	54
fd81d59c VG	55	static void s5p_setup_vbus_gpio(struct platform_device *pdev)
fd81d59c VG	56	{
3f3b55bf	57	struct device *dev = &pdev->dev;
fd81d59c VG	58	int err;
	59	int gpio;
	60
3f3b55bf	61	if (!dev->of_node)
fd81d59c VG	62	return;
fd81d59c VG	63
3f3b55bf	64	gpio = of_get_named_gpio(dev->of_node, "samsung,vbus-gpio", 0);
fd81d59c VG	65	if (!gpio_is_valid(gpio))
	66	return;
	67
3f3b55bf DA	68	err = devm_gpio_request_one(dev, gpio, GPIOF_OUT_INIT_HIGH,
3f3b55bf DA	69	"ehci_vbus_gpio");
fd81d59c	70	if (err)
3f3b55bf	71	dev_err(dev, "can't request ehci vbus gpio %d", gpio);
fd81d59c VG	72	}
fd81d59c VG	73
41ac7b3a	74	static int s5p_ehci_probe(struct platform_device *pdev)
1bcc5aa8	75	{
d233c196	76	struct s5p_ehci_platdata *pdata = pdev->dev.platform_data;
1bcc5aa8 JS	77	struct s5p_ehci_hcd *s5p_ehci;
	78	struct usb_hcd *hcd;
	79	struct ehci_hcd *ehci;
	80	struct resource *res;
d233c196	81	struct usb_phy *phy;
1bcc5aa8 JS	82	int irq;
	83	int err;
	84
2c026e2b VG	85	/*
	86	* Right now device-tree probed devices don't get dma_mask set.
	87	* Since shared usb code relies on it, set it here for now.
	88	* Once we move to full device tree support this will vanish off.
	89	*/
	90	if (!pdev->dev.dma_mask)
3b9561e9	91	pdev->dev.dma_mask = &pdev->dev.coherent_dma_mask;
2c026e2b VG	92	if (!pdev->dev.coherent_dma_mask)
	93	pdev->dev.coherent_dma_mask = DMA_BIT_MASK(32);
	94
fd81d59c VG	95	s5p_setup_vbus_gpio(pdev);
fd81d59c VG	96
7edb3daf MG	97	hcd = usb_create_hcd(&s5p_ehci_hc_driver,
	98	&pdev->dev, dev_name(&pdev->dev));
	99	if (!hcd) {
	100	dev_err(&pdev->dev, "Unable to create HCD\n");
1bcc5aa8	101	return -ENOMEM;
7edb3daf MG	102	}
7edb3daf MG	103	s5p_ehci = to_s5p_ehci(hcd);
d233c196	104	phy = devm_usb_get_phy(&pdev->dev, USB_PHY_TYPE_USB2);
a16283e1	105	if (IS_ERR(phy)) {
d233c196 VG	106	/* Fallback to pdata */
d233c196 VG	107	if (!pdata) {
9a9ef736	108	usb_put_hcd(hcd);
d233c196 VG	109	dev_warn(&pdev->dev, "no platform data or transceiver defined\n");
	110	return -EPROBE_DEFER;
	111	} else {
	112	s5p_ehci->pdata = pdata;
	113	}
	114	} else {
	115	s5p_ehci->phy = phy;
	116	s5p_ehci->otg = phy->otg;
	117	}
	118
63fd0ae4	119	s5p_ehci->clk = devm_clk_get(&pdev->dev, "usbhost");
1bcc5aa8 JS	120
	121	if (IS_ERR(s5p_ehci->clk)) {
	122	dev_err(&pdev->dev, "Failed to get usbhost clock\n");
	123	err = PTR_ERR(s5p_ehci->clk);
	124	goto fail_clk;
	125	}
	126
e1deb56c	127	err = clk_prepare_enable(s5p_ehci->clk);
1bcc5aa8	128	if (err)
63fd0ae4	129	goto fail_clk;
1bcc5aa8 JS	130
	131	res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
	132	if (!res) {
	133	dev_err(&pdev->dev, "Failed to get I/O memory\n");
	134	err = -ENXIO;
	135	goto fail_io;
	136	}
	137
	138	hcd->rsrc_start = res->start;
	139	hcd->rsrc_len = resource_size(res);
9cb07563	140	hcd->regs = devm_ioremap(&pdev->dev, res->start, hcd->rsrc_len);
1bcc5aa8 JS	141	if (!hcd->regs) {
	142	dev_err(&pdev->dev, "Failed to remap I/O memory\n");
	143	err = -ENOMEM;
	144	goto fail_io;
	145	}
	146
	147	irq = platform_get_irq(pdev, 0);
	148	if (!irq) {
	149	dev_err(&pdev->dev, "Failed to get IRQ\n");
	150	err = -ENODEV;
9cb07563	151	goto fail_io;
1bcc5aa8 JS	152	}
1bcc5aa8 JS	153
d233c196	154	if (s5p_ehci->otg)
7edb3daf	155	s5p_ehci->otg->set_host(s5p_ehci->otg, &hcd->self);
d233c196	156
7edb3daf MG	157	if (s5p_ehci->phy)
	158	usb_phy_init(s5p_ehci->phy);
	159	else if (s5p_ehci->pdata->phy_init)
	160	s5p_ehci->pdata->phy_init(pdev, USB_PHY_TYPE_HOST);
1bcc5aa8 JS	161
	162	ehci = hcd_to_ehci(hcd);
	163	ehci->caps = hcd->regs;
1bcc5aa8	164
88555a63 JH	165	/* DMA burst Enable */
	166	writel(EHCI_INSNREG00_ENABLE_DMA_BURST, EHCI_INSNREG00(hcd->regs));
	167
b5dd18d8	168	err = usb_add_hcd(hcd, irq, IRQF_SHARED);
1bcc5aa8 JS	169	if (err) {
1bcc5aa8 JS	170	dev_err(&pdev->dev, "Failed to add USB HCD\n");
d233c196	171	goto fail_add_hcd;
1bcc5aa8 JS	172	}
1bcc5aa8 JS	173
bbcd85a0	174	platform_set_drvdata(pdev, hcd);
1bcc5aa8 JS	175
	176	return 0;
	177
d233c196	178	fail_add_hcd:
7edb3daf MG	179	if (s5p_ehci->phy)
	180	usb_phy_shutdown(s5p_ehci->phy);
	181	else if (s5p_ehci->pdata->phy_exit)
	182	s5p_ehci->pdata->phy_exit(pdev, USB_PHY_TYPE_HOST);
1bcc5aa8	183	fail_io:
e1deb56c	184	clk_disable_unprepare(s5p_ehci->clk);
1bcc5aa8 JS	185	fail_clk:
1bcc5aa8 JS	186	usb_put_hcd(hcd);
1bcc5aa8 JS	187	return err;
	188	}
	189
fb4e98ab	190	static int s5p_ehci_remove(struct platform_device *pdev)
1bcc5aa8	191	{
7edb3daf MG	192	struct usb_hcd *hcd = platform_get_drvdata(pdev);
7edb3daf MG	193	struct s5p_ehci_hcd *s5p_ehci = to_s5p_ehci(hcd);
1bcc5aa8 JS	194
	195	usb_remove_hcd(hcd);
	196
d233c196	197	if (s5p_ehci->otg)
7edb3daf	198	s5p_ehci->otg->set_host(s5p_ehci->otg, &hcd->self);
d233c196	199
7edb3daf MG	200	if (s5p_ehci->phy)
	201	usb_phy_shutdown(s5p_ehci->phy);
	202	else if (s5p_ehci->pdata->phy_exit)
	203	s5p_ehci->pdata->phy_exit(pdev, USB_PHY_TYPE_HOST);
1bcc5aa8	204
e1deb56c	205	clk_disable_unprepare(s5p_ehci->clk);
1bcc5aa8 JS	206
1bcc5aa8 JS	207	usb_put_hcd(hcd);
1bcc5aa8 JS	208
	209	return 0;
	210	}
	211
	212	static void s5p_ehci_shutdown(struct platform_device *pdev)
	213	{
7edb3daf	214	struct usb_hcd *hcd = platform_get_drvdata(pdev);
1bcc5aa8 JS	215
	216	if (hcd->driver->shutdown)
	217	hcd->driver->shutdown(hcd);
	218	}
	219
1acb30ef JH	220	#ifdef CONFIG_PM
	221	static int s5p_ehci_suspend(struct device *dev)
	222	{
7edb3daf MG	223	struct usb_hcd *hcd = dev_get_drvdata(dev);
	224	struct s5p_ehci_hcd *s5p_ehci = to_s5p_ehci(hcd);
	225	struct platform_device *pdev = to_platform_device(dev);
	226
c5cf9212	227	bool do_wakeup = device_may_wakeup(dev);
c5cf9212	228	int rc;
1acb30ef	229
c5cf9212	230	rc = ehci_suspend(hcd, do_wakeup);
1acb30ef	231
d233c196	232	if (s5p_ehci->otg)
7edb3daf	233	s5p_ehci->otg->set_host(s5p_ehci->otg, &hcd->self);
d233c196	234
7edb3daf MG	235	if (s5p_ehci->phy)
	236	usb_phy_shutdown(s5p_ehci->phy);
	237	else if (s5p_ehci->pdata->phy_exit)
	238	s5p_ehci->pdata->phy_exit(pdev, USB_PHY_TYPE_HOST);
1acb30ef	239
e1deb56c	240	clk_disable_unprepare(s5p_ehci->clk);
8b4fc8c7	241
1acb30ef JH	242	return rc;
	243	}
	244
	245	static int s5p_ehci_resume(struct device *dev)
	246	{
7edb3daf MG	247	struct usb_hcd *hcd = dev_get_drvdata(dev);
	248	struct s5p_ehci_hcd *s5p_ehci = to_s5p_ehci(hcd);
	249	struct platform_device *pdev = to_platform_device(dev);
1acb30ef	250
e1deb56c	251	clk_prepare_enable(s5p_ehci->clk);
8b4fc8c7	252
d233c196	253	if (s5p_ehci->otg)
7edb3daf	254	s5p_ehci->otg->set_host(s5p_ehci->otg, &hcd->self);
d233c196	255
7edb3daf MG	256	if (s5p_ehci->phy)
	257	usb_phy_init(s5p_ehci->phy);
	258	else if (s5p_ehci->pdata->phy_init)
	259	s5p_ehci->pdata->phy_init(pdev, USB_PHY_TYPE_HOST);
1acb30ef	260
88555a63 JH	261	/* DMA burst Enable */
	262	writel(EHCI_INSNREG00_ENABLE_DMA_BURST, EHCI_INSNREG00(hcd->regs));
	263
c5cf9212	264	ehci_resume(hcd, false);
1acb30ef JH	265	return 0;
	266	}
	267	#else
	268	#define s5p_ehci_suspend NULL
	269	#define s5p_ehci_resume NULL
	270	#endif
	271
	272	static const struct dev_pm_ops s5p_ehci_pm_ops = {
	273	.suspend = s5p_ehci_suspend,
	274	.resume = s5p_ehci_resume,
	275	};
	276
2c026e2b VG	277	#ifdef CONFIG_OF
2c026e2b VG	278	static const struct of_device_id exynos_ehci_match[] = {
6e247777	279	{ .compatible = "samsung,exynos4210-ehci" },
2c026e2b VG	280	{},
	281	};
	282	MODULE_DEVICE_TABLE(of, exynos_ehci_match);
	283	#endif
	284
1bcc5aa8 JS	285	static struct platform_driver s5p_ehci_driver = {
1bcc5aa8 JS	286	.probe = s5p_ehci_probe,
7690417d	287	.remove = s5p_ehci_remove,
1bcc5aa8 JS	288	.shutdown = s5p_ehci_shutdown,
	289	.driver = {
	290	.name = "s5p-ehci",
	291	.owner = THIS_MODULE,
1acb30ef	292	.pm = &s5p_ehci_pm_ops,
2c026e2b	293	.of_match_table = of_match_ptr(exynos_ehci_match),
1bcc5aa8 JS	294	}
1bcc5aa8 JS	295	};
7edb3daf MG	296	static const struct ehci_driver_overrides s5p_overrides __initdata = {
	297	.extra_priv_size = sizeof(struct s5p_ehci_hcd),
	298	};
	299
	300	static int __init ehci_s5p_init(void)
	301	{
	302	if (usb_disabled())
	303	return -ENODEV;
	304
	305	pr_info("%s: " DRIVER_DESC "\n", hcd_name);
	306	ehci_init_driver(&s5p_ehci_hc_driver, &s5p_overrides);
	307	return platform_driver_register(&s5p_ehci_driver);
	308	}
	309	module_init(ehci_s5p_init);
	310
	311	static void __exit ehci_s5p_cleanup(void)
	312	{
	313	platform_driver_unregister(&s5p_ehci_driver);
	314	}
	315	module_exit(ehci_s5p_cleanup);
1bcc5aa8	316
7edb3daf	317	MODULE_DESCRIPTION(DRIVER_DESC);
1bcc5aa8	318	MODULE_ALIAS("platform:s5p-ehci");
7edb3daf MG	319	MODULE_AUTHOR("Jingoo Han");
	320	MODULE_AUTHOR("Joonyoung Shim");
	321	MODULE_LICENSE("GPL v2");