[deliverable/linux.git] / drivers / usb / host / ohci-platform.c

/*
 * Generic platform ohci driver
 *
 * Copyright 2007 Michael Buesch <m@bues.ch>
 * Copyright 2011-2012 Hauke Mehrtens <hauke@hauke-m.de>
 * Copyright 2014 Hans de Goede <hdegoede@redhat.com>
 *
 * Derived from the OCHI-SSB driver
 * Derived from the OHCI-PCI driver
 * Copyright 1999 Roman Weissgaerber
 * Copyright 2000-2002 David Brownell
 * Copyright 1999 Linus Torvalds
 * Copyright 1999 Gregory P. Smith
 *
 * Licensed under the GNU/GPL. See COPYING for details.
 */

#include <linux/clk.h>
#include <linux/dma-mapping.h>
#include <linux/hrtimer.h>
#include <linux/io.h>
#include <linux/kernel.h>
#include <linux/module.h>
#include <linux/err.h>
#include <linux/phy/phy.h>
#include <linux/platform_device.h>
#include <linux/usb/ohci_pdriver.h>
#include <linux/usb.h>
#include <linux/usb/hcd.h>

#include "ohci.h"

#define DRIVER_DESC "OHCI generic platform driver"
#define OHCI_MAX_CLKS 3
#define hcd_to_ohci_priv(h) ((struct ohci_platform_priv *)hcd_to_ohci(h)->priv)

struct ohci_platform_priv {
	struct clk *clks[OHCI_MAX_CLKS];
	struct phy *phy;
};

static const char hcd_name[] = "ohci-platform";

static int ohci_platform_reset(struct usb_hcd *hcd)
{
	struct platform_device *pdev = to_platform_device(hcd->self.controller);
	struct usb_ohci_pdata *pdata = dev_get_platdata(&pdev->dev);
	struct ohci_hcd *ohci = hcd_to_ohci(hcd);

	if (pdata->big_endian_desc)
		ohci->flags |= OHCI_QUIRK_BE_DESC;
	if (pdata->big_endian_mmio)
		ohci->flags |= OHCI_QUIRK_BE_MMIO;
	if (pdata->no_big_frame_no)
		ohci->flags |= OHCI_QUIRK_FRAME_NO;
	if (pdata->num_ports)
		ohci->num_ports = pdata->num_ports;

	return ohci_setup(hcd);
}

static int ohci_platform_power_on(struct platform_device *dev)
{
	struct usb_hcd *hcd = platform_get_drvdata(dev);
	struct ohci_platform_priv *priv = hcd_to_ohci_priv(hcd);
	int clk, ret;

	for (clk = 0; clk < OHCI_MAX_CLKS && priv->clks[clk]; clk++) {
		ret = clk_prepare_enable(priv->clks[clk]);
		if (ret)
			goto err_disable_clks;
	}

	if (priv->phy) {
		ret = phy_init(priv->phy);
		if (ret)
			goto err_disable_clks;

		ret = phy_power_on(priv->phy);
		if (ret)
			goto err_exit_phy;
	}

	return 0;

err_exit_phy:
	phy_exit(priv->phy);
err_disable_clks:
	while (--clk >= 0)
		clk_disable_unprepare(priv->clks[clk]);

	return ret;
}

static void ohci_platform_power_off(struct platform_device *dev)
{
	struct usb_hcd *hcd = platform_get_drvdata(dev);
	struct ohci_platform_priv *priv = hcd_to_ohci_priv(hcd);
	int clk;

	if (priv->phy) {
		phy_power_off(priv->phy);
		phy_exit(priv->phy);
	}

	for (clk = OHCI_MAX_CLKS - 1; clk >= 0; clk--)
		if (priv->clks[clk])
			clk_disable_unprepare(priv->clks[clk]);
}

static struct hc_driver __read_mostly ohci_platform_hc_driver;

static const struct ohci_driver_overrides platform_overrides __initconst = {
	.product_desc =		"Generic Platform OHCI controller",
	.reset =		ohci_platform_reset,
	.extra_priv_size =	sizeof(struct ohci_platform_priv),
};

static struct usb_ohci_pdata ohci_platform_defaults = {
	.power_on =		ohci_platform_power_on,
	.power_suspend =	ohci_platform_power_off,
	.power_off =		ohci_platform_power_off,
};

static int ohci_platform_probe(struct platform_device *dev)
{
	struct usb_hcd *hcd;
	struct resource *res_mem;
	struct usb_ohci_pdata *pdata = dev_get_platdata(&dev->dev);
	struct ohci_platform_priv *priv;
	struct ohci_hcd *ohci;
	int err, irq, clk = 0;

	if (usb_disabled())
		return -ENODEV;

	/*
	 * Use reasonable defaults so platforms don't have to provide these
	 * with DT probing on ARM.
	 */
	if (!pdata)
		pdata = &ohci_platform_defaults;

	err = dma_coerce_mask_and_coherent(&dev->dev, DMA_BIT_MASK(32));
	if (err)
		return err;

	irq = platform_get_irq(dev, 0);
	if (irq < 0) {
		dev_err(&dev->dev, "no irq provided");
		return irq;
	}

	res_mem = platform_get_resource(dev, IORESOURCE_MEM, 0);
	if (!res_mem) {
		dev_err(&dev->dev, "no memory resource provided");
		return -ENXIO;
	}

	hcd = usb_create_hcd(&ohci_platform_hc_driver, &dev->dev,
			dev_name(&dev->dev));
	if (!hcd)
		return -ENOMEM;

	platform_set_drvdata(dev, hcd);
	dev->dev.platform_data = pdata;
	priv = hcd_to_ohci_priv(hcd);
	ohci = hcd_to_ohci(hcd);

	if (pdata == &ohci_platform_defaults && dev->dev.of_node) {
		if (of_property_read_bool(dev->dev.of_node, "big-endian-regs"))
			ohci->flags |= OHCI_QUIRK_BE_MMIO;

		if (of_property_read_bool(dev->dev.of_node, "big-endian-desc"))
			ohci->flags |= OHCI_QUIRK_BE_DESC;

		if (of_property_read_bool(dev->dev.of_node, "big-endian"))
			ohci->flags |= OHCI_QUIRK_BE_MMIO | OHCI_QUIRK_BE_DESC;

#ifndef CONFIG_USB_OHCI_BIG_ENDIAN_MMIO
		if (ohci->flags & OHCI_QUIRK_BE_MMIO) {
			dev_err(&dev->dev,
				"Error big-endian-regs not compiled in\n");
			err = -EINVAL;
			goto err_put_hcd;
		}
#endif
#ifndef CONFIG_USB_OHCI_BIG_ENDIAN_DESC
		if (ohci->flags & OHCI_QUIRK_BE_DESC) {
			dev_err(&dev->dev,
				"Error big-endian-desc not compiled in\n");
			err = -EINVAL;
			goto err_put_hcd;
		}
#endif
		priv->phy = devm_phy_get(&dev->dev, "usb");
		if (IS_ERR(priv->phy)) {
			err = PTR_ERR(priv->phy);
			if (err == -EPROBE_DEFER)
				goto err_put_hcd;
			priv->phy = NULL;
		}

		for (clk = 0; clk < OHCI_MAX_CLKS; clk++) {
			priv->clks[clk] = of_clk_get(dev->dev.of_node, clk);
			if (IS_ERR(priv->clks[clk])) {
				err = PTR_ERR(priv->clks[clk]);
				if (err == -EPROBE_DEFER)
					goto err_put_clks;
				priv->clks[clk] = NULL;
				break;
			}
		}
	}

	if (pdata->power_on) {
		err = pdata->power_on(dev);
		if (err < 0)
			goto err_put_clks;
	}

	hcd->rsrc_start = res_mem->start;
	hcd->rsrc_len = resource_size(res_mem);

	hcd->regs = devm_ioremap_resource(&dev->dev, res_mem);
	if (IS_ERR(hcd->regs)) {
		err = PTR_ERR(hcd->regs);
		goto err_power;
	}
	err = usb_add_hcd(hcd, irq, IRQF_SHARED);
	if (err)
		goto err_power;

	device_wakeup_enable(hcd->self.controller);

	platform_set_drvdata(dev, hcd);

	return err;

err_power:
	if (pdata->power_off)
		pdata->power_off(dev);
err_put_clks:
	while (--clk >= 0)
		clk_put(priv->clks[clk]);
err_put_hcd:
	if (pdata == &ohci_platform_defaults)
		dev->dev.platform_data = NULL;

	usb_put_hcd(hcd);

	return err;
}

static int ohci_platform_remove(struct platform_device *dev)
{
	struct usb_hcd *hcd = platform_get_drvdata(dev);
	struct usb_ohci_pdata *pdata = dev_get_platdata(&dev->dev);
	struct ohci_platform_priv *priv = hcd_to_ohci_priv(hcd);
	int clk;

	usb_remove_hcd(hcd);

	if (pdata->power_off)
		pdata->power_off(dev);

	for (clk = 0; clk < OHCI_MAX_CLKS && priv->clks[clk]; clk++)
		clk_put(priv->clks[clk]);

	usb_put_hcd(hcd);

	if (pdata == &ohci_platform_defaults)
		dev->dev.platform_data = NULL;

	return 0;
}

#ifdef CONFIG_PM

static int ohci_platform_suspend(struct device *dev)
{
	struct usb_hcd *hcd = dev_get_drvdata(dev);
	struct usb_ohci_pdata *pdata = dev->platform_data;
	struct platform_device *pdev =
		container_of(dev, struct platform_device, dev);
	bool do_wakeup = device_may_wakeup(dev);
	int ret;

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

	if (pdata->power_suspend)
		pdata->power_suspend(pdev);

	return ret;
}

static int ohci_platform_resume(struct device *dev)
{
	struct usb_hcd *hcd = dev_get_drvdata(dev);
	struct usb_ohci_pdata *pdata = dev_get_platdata(dev);
	struct platform_device *pdev =
		container_of(dev, struct platform_device, dev);

	if (pdata->power_on) {
		int err = pdata->power_on(pdev);
		if (err < 0)
			return err;
	}

	ohci_resume(hcd, false);
	return 0;
}

#else /* !CONFIG_PM */
#define ohci_platform_suspend	NULL
#define ohci_platform_resume	NULL
#endif /* CONFIG_PM */

static const struct of_device_id ohci_platform_ids[] = {
	{ .compatible = "usb-ohci", },
	{ }
};
MODULE_DEVICE_TABLE(of, ohci_platform_ids);

static const struct platform_device_id ohci_platform_table[] = {
	{ "ohci-platform", 0 },
	{ }
};
MODULE_DEVICE_TABLE(platform, ohci_platform_table);

static const struct dev_pm_ops ohci_platform_pm_ops = {
	.suspend	= ohci_platform_suspend,
	.resume		= ohci_platform_resume,
};

static struct platform_driver ohci_platform_driver = {
	.id_table	= ohci_platform_table,
	.probe		= ohci_platform_probe,
	.remove		= ohci_platform_remove,
	.shutdown	= usb_hcd_platform_shutdown,
	.driver		= {
		.owner	= THIS_MODULE,
		.name	= "ohci-platform",
		.pm	= &ohci_platform_pm_ops,
		.of_match_table = ohci_platform_ids,
	}
};

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

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

	ohci_init_driver(&ohci_platform_hc_driver, &platform_overrides);
	return platform_driver_register(&ohci_platform_driver);
}
module_init(ohci_platform_init);

static void __exit ohci_platform_cleanup(void)
{
	platform_driver_unregister(&ohci_platform_driver);
}
module_exit(ohci_platform_cleanup);

MODULE_DESCRIPTION(DRIVER_DESC);
MODULE_AUTHOR("Hauke Mehrtens");
MODULE_AUTHOR("Alan Stern");
MODULE_LICENSE("GPL");
Commit	Line	Data
fa3364b5 HM	1	/*
	2	* Generic platform ohci driver
	3	*
	4	* Copyright 2007 Michael Buesch <m@bues.ch>
	5	* Copyright 2011-2012 Hauke Mehrtens <hauke@hauke-m.de>
ca52a17b	6	* Copyright 2014 Hans de Goede <hdegoede@redhat.com>
fa3364b5 HM	7	*
	8	* Derived from the OCHI-SSB driver
	9	* Derived from the OHCI-PCI driver
	10	* Copyright 1999 Roman Weissgaerber
	11	* Copyright 2000-2002 David Brownell
	12	* Copyright 1999 Linus Torvalds
	13	* Copyright 1999 Gregory P. Smith
	14	*
	15	* Licensed under the GNU/GPL. See COPYING for details.
	16	*/
928fb68e	17
ca52a17b HG	18	#include <linux/clk.h>
ca52a17b HG	19	#include <linux/dma-mapping.h>
928fb68e MG	20	#include <linux/hrtimer.h>
	21	#include <linux/io.h>
	22	#include <linux/kernel.h>
	23	#include <linux/module.h>
148e1134	24	#include <linux/err.h>
ca52a17b	25	#include <linux/phy/phy.h>
fa3364b5 HM	26	#include <linux/platform_device.h>
fa3364b5 HM	27	#include <linux/usb/ohci_pdriver.h>
928fb68e MG	28	#include <linux/usb.h>
	29	#include <linux/usb/hcd.h>
	30
	31	#include "ohci.h"
	32
	33	#define DRIVER_DESC "OHCI generic platform driver"
ca52a17b HG	34	#define OHCI_MAX_CLKS 3
	35	#define hcd_to_ohci_priv(h) ((struct ohci_platform_priv *)hcd_to_ohci(h)->priv)
	36
	37	struct ohci_platform_priv {
	38	struct clk *clks[OHCI_MAX_CLKS];
	39	struct phy *phy;
	40	};
928fb68e MG	41
928fb68e MG	42	static const char hcd_name[] = "ohci-platform";
fa3364b5 HM	43
	44	static int ohci_platform_reset(struct usb_hcd *hcd)
	45	{
	46	struct platform_device *pdev = to_platform_device(hcd->self.controller);
d4f09e28	47	struct usb_ohci_pdata *pdata = dev_get_platdata(&pdev->dev);
fa3364b5	48	struct ohci_hcd *ohci = hcd_to_ohci(hcd);
fa3364b5 HM	49
	50	if (pdata->big_endian_desc)
	51	ohci->flags \|= OHCI_QUIRK_BE_DESC;
	52	if (pdata->big_endian_mmio)
	53	ohci->flags \|= OHCI_QUIRK_BE_MMIO;
	54	if (pdata->no_big_frame_no)
	55	ohci->flags \|= OHCI_QUIRK_FRAME_NO;
2b16e39e FF	56	if (pdata->num_ports)
	57	ohci->num_ports = pdata->num_ports;
	58
928fb68e	59	return ohci_setup(hcd);
fa3364b5 HM	60	}
fa3364b5 HM	61
ca52a17b HG	62	static int ohci_platform_power_on(struct platform_device *dev)
	63	{
	64	struct usb_hcd *hcd = platform_get_drvdata(dev);
	65	struct ohci_platform_priv *priv = hcd_to_ohci_priv(hcd);
	66	int clk, ret;
	67
	68	for (clk = 0; clk < OHCI_MAX_CLKS && priv->clks[clk]; clk++) {
	69	ret = clk_prepare_enable(priv->clks[clk]);
	70	if (ret)
	71	goto err_disable_clks;
	72	}
	73
	74	if (priv->phy) {
	75	ret = phy_init(priv->phy);
	76	if (ret)
	77	goto err_disable_clks;
	78
	79	ret = phy_power_on(priv->phy);
	80	if (ret)
	81	goto err_exit_phy;
	82	}
	83
	84	return 0;
	85
	86	err_exit_phy:
	87	phy_exit(priv->phy);
	88	err_disable_clks:
	89	while (--clk >= 0)
	90	clk_disable_unprepare(priv->clks[clk]);
	91
	92	return ret;
	93	}
	94
	95	static void ohci_platform_power_off(struct platform_device *dev)
	96	{
	97	struct usb_hcd *hcd = platform_get_drvdata(dev);
	98	struct ohci_platform_priv *priv = hcd_to_ohci_priv(hcd);
	99	int clk;
	100
	101	if (priv->phy) {
	102	phy_power_off(priv->phy);
	103	phy_exit(priv->phy);
	104	}
	105
	106	for (clk = OHCI_MAX_CLKS - 1; clk >= 0; clk--)
	107	if (priv->clks[clk])
	108	clk_disable_unprepare(priv->clks[clk]);
	109	}
	110
928fb68e	111	static struct hc_driver __read_mostly ohci_platform_hc_driver;
fa3364b5	112
928fb68e	113	static const struct ohci_driver_overrides platform_overrides __initconst = {
ca52a17b HG	114	.product_desc = "Generic Platform OHCI controller",
	115	.reset = ohci_platform_reset,
	116	.extra_priv_size = sizeof(struct ohci_platform_priv),
	117	};
	118
	119	static struct usb_ohci_pdata ohci_platform_defaults = {
	120	.power_on = ohci_platform_power_on,
	121	.power_suspend = ohci_platform_power_off,
	122	.power_off = ohci_platform_power_off,
fa3364b5 HM	123	};
fa3364b5 HM	124
41ac7b3a	125	static int ohci_platform_probe(struct platform_device *dev)
fa3364b5 HM	126	{
	127	struct usb_hcd *hcd;
	128	struct resource *res_mem;
d4f09e28	129	struct usb_ohci_pdata *pdata = dev_get_platdata(&dev->dev);
ca52a17b	130	struct ohci_platform_priv *priv;
b1034412	131	struct ohci_hcd *ohci;
ca52a17b	132	int err, irq, clk = 0;
fa3364b5 HM	133
	134	if (usb_disabled())
	135	return -ENODEV;
	136
ca52a17b HG	137	/*
	138	* Use reasonable defaults so platforms don't have to provide these
	139	* with DT probing on ARM.
	140	*/
	141	if (!pdata)
	142	pdata = &ohci_platform_defaults;
	143
	144	err = dma_coerce_mask_and_coherent(&dev->dev, DMA_BIT_MASK(32));
	145	if (err)
	146	return err;
	147
fa3364b5 HM	148	irq = platform_get_irq(dev, 0);
fa3364b5 HM	149	if (irq < 0) {
976baf6e	150	dev_err(&dev->dev, "no irq provided");
fa3364b5 HM	151	return irq;
	152	}
	153
	154	res_mem = platform_get_resource(dev, IORESOURCE_MEM, 0);
	155	if (!res_mem) {
ac0e3c04	156	dev_err(&dev->dev, "no memory resource provided");
fa3364b5 HM	157	return -ENXIO;
	158	}
	159
ca52a17b HG	160	hcd = usb_create_hcd(&ohci_platform_hc_driver, &dev->dev,
	161	dev_name(&dev->dev));
	162	if (!hcd)
	163	return -ENOMEM;
	164
	165	platform_set_drvdata(dev, hcd);
	166	dev->dev.platform_data = pdata;
	167	priv = hcd_to_ohci_priv(hcd);
b1034412	168	ohci = hcd_to_ohci(hcd);
ca52a17b HG	169
ca52a17b HG	170	if (pdata == &ohci_platform_defaults && dev->dev.of_node) {
b1034412 HG	171	if (of_property_read_bool(dev->dev.of_node, "big-endian-regs"))
	172	ohci->flags \|= OHCI_QUIRK_BE_MMIO;
	173
	174	if (of_property_read_bool(dev->dev.of_node, "big-endian-desc"))
	175	ohci->flags \|= OHCI_QUIRK_BE_DESC;
	176
	177	if (of_property_read_bool(dev->dev.of_node, "big-endian"))
	178	ohci->flags \|= OHCI_QUIRK_BE_MMIO \| OHCI_QUIRK_BE_DESC;
	179
	180	#ifndef CONFIG_USB_OHCI_BIG_ENDIAN_MMIO
	181	if (ohci->flags & OHCI_QUIRK_BE_MMIO) {
	182	dev_err(&dev->dev,
	183	"Error big-endian-regs not compiled in\n");
	184	err = -EINVAL;
	185	goto err_put_hcd;
	186	}
	187	#endif
	188	#ifndef CONFIG_USB_OHCI_BIG_ENDIAN_DESC
	189	if (ohci->flags & OHCI_QUIRK_BE_DESC) {
	190	dev_err(&dev->dev,
	191	"Error big-endian-desc not compiled in\n");
	192	err = -EINVAL;
	193	goto err_put_hcd;
	194	}
	195	#endif
ca52a17b HG	196	priv->phy = devm_phy_get(&dev->dev, "usb");
	197	if (IS_ERR(priv->phy)) {
	198	err = PTR_ERR(priv->phy);
	199	if (err == -EPROBE_DEFER)
	200	goto err_put_hcd;
	201	priv->phy = NULL;
	202	}
	203
	204	for (clk = 0; clk < OHCI_MAX_CLKS; clk++) {
	205	priv->clks[clk] = of_clk_get(dev->dev.of_node, clk);
	206	if (IS_ERR(priv->clks[clk])) {
	207	err = PTR_ERR(priv->clks[clk]);
	208	if (err == -EPROBE_DEFER)
	209	goto err_put_clks;
	210	priv->clks[clk] = NULL;
	211	break;
	212	}
	213	}
	214	}
	215
e4d37aeb KM	216	if (pdata->power_on) {
	217	err = pdata->power_on(dev);
	218	if (err < 0)
ca52a17b	219	goto err_put_clks;
e4d37aeb	220	}
fa3364b5 HM	221
	222	hcd->rsrc_start = res_mem->start;
	223	hcd->rsrc_len = resource_size(res_mem);
	224
148e1134 TR	225	hcd->regs = devm_ioremap_resource(&dev->dev, res_mem);
	226	if (IS_ERR(hcd->regs)) {
	227	err = PTR_ERR(hcd->regs);
ca52a17b	228	goto err_power;
aece389e	229	}
fa3364b5 HM	230	err = usb_add_hcd(hcd, irq, IRQF_SHARED);
fa3364b5 HM	231	if (err)
ca52a17b	232	goto err_power;
fa3364b5	233
3c9740a1 PC	234	device_wakeup_enable(hcd->self.controller);
3c9740a1 PC	235
fa3364b5 HM	236	platform_set_drvdata(dev, hcd);
	237
	238	return err;
	239
e4d37aeb KM	240	err_power:
	241	if (pdata->power_off)
	242	pdata->power_off(dev);
ca52a17b HG	243	err_put_clks:
	244	while (--clk >= 0)
	245	clk_put(priv->clks[clk]);
	246	err_put_hcd:
	247	if (pdata == &ohci_platform_defaults)
	248	dev->dev.platform_data = NULL;
	249
	250	usb_put_hcd(hcd);
e4d37aeb	251
fa3364b5 HM	252	return err;
	253	}
	254
fb4e98ab	255	static int ohci_platform_remove(struct platform_device *dev)
fa3364b5 HM	256	{
fa3364b5 HM	257	struct usb_hcd *hcd = platform_get_drvdata(dev);
d4f09e28	258	struct usb_ohci_pdata *pdata = dev_get_platdata(&dev->dev);
ca52a17b HG	259	struct ohci_platform_priv *priv = hcd_to_ohci_priv(hcd);
ca52a17b HG	260	int clk;
fa3364b5 HM	261
fa3364b5 HM	262	usb_remove_hcd(hcd);
fa3364b5	263
e4d37aeb KM	264	if (pdata->power_off)
	265	pdata->power_off(dev);
	266
ca52a17b HG	267	for (clk = 0; clk < OHCI_MAX_CLKS && priv->clks[clk]; clk++)
	268	clk_put(priv->clks[clk]);
	269
	270	usb_put_hcd(hcd);
	271
	272	if (pdata == &ohci_platform_defaults)
	273	dev->dev.platform_data = NULL;
	274
fa3364b5 HM	275	return 0;
	276	}
	277
	278	#ifdef CONFIG_PM
	279
	280	static int ohci_platform_suspend(struct device *dev)
	281	{
39dbd7df MG	282	struct usb_hcd *hcd = dev_get_drvdata(dev);
39dbd7df MG	283	struct usb_ohci_pdata *pdata = dev->platform_data;
e4d37aeb KM	284	struct platform_device *pdev =
e4d37aeb KM	285	container_of(dev, struct platform_device, dev);
39dbd7df MG	286	bool do_wakeup = device_may_wakeup(dev);
	287	int ret;
	288
	289	ret = ohci_suspend(hcd, do_wakeup);
	290	if (ret)
	291	return ret;
e4d37aeb KM	292
	293	if (pdata->power_suspend)
	294	pdata->power_suspend(pdev);
	295
39dbd7df	296	return ret;
fa3364b5 HM	297	}
	298
	299	static int ohci_platform_resume(struct device *dev)
	300	{
	301	struct usb_hcd *hcd = dev_get_drvdata(dev);
d4f09e28	302	struct usb_ohci_pdata *pdata = dev_get_platdata(dev);
e4d37aeb KM	303	struct platform_device *pdev =
	304	container_of(dev, struct platform_device, dev);
	305
	306	if (pdata->power_on) {
	307	int err = pdata->power_on(pdev);
	308	if (err < 0)
	309	return err;
	310	}
fa3364b5	311
cfa49b4b	312	ohci_resume(hcd, false);
fa3364b5 HM	313	return 0;
	314	}
	315
	316	#else /* !CONFIG_PM */
	317	#define ohci_platform_suspend NULL
	318	#define ohci_platform_resume NULL
	319	#endif /* CONFIG_PM */
	320
ca52a17b HG	321	static const struct of_device_id ohci_platform_ids[] = {
	322	{ .compatible = "usb-ohci", },
	323	{ }
	324	};
	325	MODULE_DEVICE_TABLE(of, ohci_platform_ids);
	326
fa3364b5 HM	327	static const struct platform_device_id ohci_platform_table[] = {
	328	{ "ohci-platform", 0 },
	329	{ }
	330	};
	331	MODULE_DEVICE_TABLE(platform, ohci_platform_table);
	332
	333	static const struct dev_pm_ops ohci_platform_pm_ops = {
	334	.suspend = ohci_platform_suspend,
	335	.resume = ohci_platform_resume,
	336	};
	337
	338	static struct platform_driver ohci_platform_driver = {
	339	.id_table = ohci_platform_table,
	340	.probe = ohci_platform_probe,
7690417d	341	.remove = ohci_platform_remove,
fa3364b5 HM	342	.shutdown = usb_hcd_platform_shutdown,
	343	.driver = {
	344	.owner = THIS_MODULE,
	345	.name = "ohci-platform",
	346	.pm = &ohci_platform_pm_ops,
ca52a17b	347	.of_match_table = ohci_platform_ids,
fa3364b5 HM	348	}
fa3364b5 HM	349	};
928fb68e MG	350
	351	static int __init ohci_platform_init(void)
	352	{
	353	if (usb_disabled())
	354	return -ENODEV;
	355
	356	pr_info("%s: " DRIVER_DESC "\n", hcd_name);
	357
	358	ohci_init_driver(&ohci_platform_hc_driver, &platform_overrides);
	359	return platform_driver_register(&ohci_platform_driver);
	360	}
	361	module_init(ohci_platform_init);
	362
	363	static void __exit ohci_platform_cleanup(void)
	364	{
	365	platform_driver_unregister(&ohci_platform_driver);
	366	}
	367	module_exit(ohci_platform_cleanup);
	368
	369	MODULE_DESCRIPTION(DRIVER_DESC);
	370	MODULE_AUTHOR("Hauke Mehrtens");
	371	MODULE_AUTHOR("Alan Stern");
	372	MODULE_LICENSE("GPL");