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

// SPDX-License-Identifier: GPL-2.0
/*
 * 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
 */

#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/of.h>
#include <linux/platform_device.h>
#include <linux/pm_runtime.h>
#include <linux/reset.h>
#include <linux/usb/ohci_pdriver.h>
#include <linux/usb.h>
#include <linux/usb/hcd.h>
#include <linux/usb/of.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 reset_control *resets;
};

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;
	}

	return 0;

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;

	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",
	.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)
		return irq;

	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;

		if (of_property_read_bool(dev->dev.of_node, "no-big-frame-no"))
			ohci->flags |= OHCI_QUIRK_FRAME_NO;

		if (of_property_read_bool(dev->dev.of_node,
					  "remote-wakeup-connected"))
			ohci->hc_control = OHCI_CTRL_RWC;

		of_property_read_u32(dev->dev.of_node, "num-ports",
				     &ohci->num_ports);

		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;
			}
		}

		priv->resets = devm_reset_control_array_get_optional_shared(
								&dev->dev);
		if (IS_ERR(priv->resets)) {
			err = PTR_ERR(priv->resets);
			goto err_put_clks;
		}

		err = reset_control_deassert(priv->resets);
		if (err)
			goto err_put_clks;
	}

	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;

#ifndef CONFIG_USB_OHCI_BIG_ENDIAN_MMIO
	if (ohci->flags & OHCI_QUIRK_BE_MMIO) {
		dev_err(&dev->dev,
			"Error: CONFIG_USB_OHCI_BIG_ENDIAN_MMIO not set\n");
		err = -EINVAL;
		goto err_reset;
	}
#endif
#ifndef CONFIG_USB_OHCI_BIG_ENDIAN_DESC
	if (ohci->flags & OHCI_QUIRK_BE_DESC) {
		dev_err(&dev->dev,
			"Error: CONFIG_USB_OHCI_BIG_ENDIAN_DESC not set\n");
		err = -EINVAL;
		goto err_reset;
	}
#endif

	pm_runtime_set_active(&dev->dev);
	pm_runtime_enable(&dev->dev);
	if (pdata->power_on) {
		err = pdata->power_on(dev);
		if (err < 0)
			goto err_reset;
	}

	res_mem = platform_get_resource(dev, IORESOURCE_MEM, 0);
	hcd->regs = devm_ioremap_resource(&dev->dev, res_mem);
	if (IS_ERR(hcd->regs)) {
		err = PTR_ERR(hcd->regs);
		goto err_power;
	}
	hcd->rsrc_start = res_mem->start;
	hcd->rsrc_len = resource_size(res_mem);

	hcd->tpl_support = of_usb_host_tpl_support(dev->dev.of_node);

	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_reset:
	pm_runtime_disable(&dev->dev);
	reset_control_assert(priv->resets);
err_put_clks:
	while (--clk >= 0)
		clk_put(priv->clks[clk]);

	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;

	pm_runtime_get_sync(&dev->dev);
	usb_remove_hcd(hcd);

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

	reset_control_assert(priv->resets);

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

	usb_put_hcd(hcd);

	pm_runtime_put_sync(&dev->dev);
	pm_runtime_disable(&dev->dev);

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

	return 0;
}

#ifdef CONFIG_PM_SLEEP
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 = to_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_common(struct device *dev, bool hibernated)
{
	struct usb_hcd *hcd = dev_get_drvdata(dev);
	struct usb_ohci_pdata *pdata = dev_get_platdata(dev);
	struct platform_device *pdev = to_platform_device(dev);

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

	ohci_resume(hcd, hibernated);

	pm_runtime_disable(dev);
	pm_runtime_set_active(dev);
	pm_runtime_enable(dev);

	return 0;
}

static int ohci_platform_resume(struct device *dev)
{
	return ohci_platform_resume_common(dev, false);
}

static int ohci_platform_restore(struct device *dev)
{
	return ohci_platform_resume_common(dev, true);
}
#endif /* CONFIG_PM_SLEEP */

static const struct of_device_id ohci_platform_ids[] = {
	{ .compatible = "generic-ohci", },
	{ .compatible = "cavium,octeon-6335-ohci", },
	{ .compatible = "ti,ohci-omap3", },
	{ }
};
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);

#ifdef CONFIG_PM_SLEEP
static const struct dev_pm_ops ohci_platform_pm_ops = {
	.suspend = ohci_platform_suspend,
	.resume = ohci_platform_resume,
	.freeze = ohci_platform_suspend,
	.thaw = ohci_platform_resume,
	.poweroff = ohci_platform_suspend,
	.restore = ohci_platform_restore,
};
#endif

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		= {
		.name	= "ohci-platform",
#ifdef CONFIG_PM_SLEEP
		.pm	= &ohci_platform_pm_ops,
#endif
		.of_match_table = ohci_platform_ids,
		.probe_type = PROBE_PREFER_ASYNCHRONOUS,
	}
};

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

	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
5fd54ace	1	// SPDX-License-Identifier: GPL-2.0
fa3364b5 HM	2	/*
	3	* Generic platform ohci driver
	4	*
	5	* Copyright 2007 Michael Buesch <m@bues.ch>
	6	* Copyright 2011-2012 Hauke Mehrtens <hauke@hauke-m.de>
ca52a17b	7	* Copyright 2014 Hans de Goede <hdegoede@redhat.com>
fa3364b5 HM	8	*
	9	* Derived from the OCHI-SSB driver
	10	* Derived from the OHCI-PCI driver
	11	* Copyright 1999 Roman Weissgaerber
	12	* Copyright 2000-2002 David Brownell
	13	* Copyright 1999 Linus Torvalds
	14	* Copyright 1999 Gregory P. Smith
fa3364b5	15	*/
928fb68e	16
ca52a17b HG	17	#include <linux/clk.h>
ca52a17b HG	18	#include <linux/dma-mapping.h>
928fb68e MG	19	#include <linux/hrtimer.h>
	20	#include <linux/io.h>
	21	#include <linux/kernel.h>
	22	#include <linux/module.h>
148e1134	23	#include <linux/err.h>
1255dfd1	24	#include <linux/of.h>
fa3364b5	25	#include <linux/platform_device.h>
0aa0b93e	26	#include <linux/pm_runtime.h>
4615f3bd	27	#include <linux/reset.h>
fa3364b5	28	#include <linux/usb/ohci_pdriver.h>
928fb68e MG	29	#include <linux/usb.h>
928fb68e MG	30	#include <linux/usb/hcd.h>
281aec87	31	#include <linux/usb/of.h>
928fb68e MG	32
	33	#include "ohci.h"
	34
	35	#define DRIVER_DESC "OHCI generic platform driver"
ca52a17b HG	36	#define OHCI_MAX_CLKS 3
	37	#define hcd_to_ohci_priv(h) ((struct ohci_platform_priv *)hcd_to_ohci(h)->priv)
	38
	39	struct ohci_platform_priv {
	40	struct clk *clks[OHCI_MAX_CLKS];
20a7f3ad	41	struct reset_control *resets;
ca52a17b	42	};
928fb68e	43
ca52a17b HG	44	static int ohci_platform_power_on(struct platform_device *dev)
	45	{
	46	struct usb_hcd *hcd = platform_get_drvdata(dev);
	47	struct ohci_platform_priv *priv = hcd_to_ohci_priv(hcd);
1255dfd1	48	int clk, ret;
ca52a17b HG	49
	50	for (clk = 0; clk < OHCI_MAX_CLKS && priv->clks[clk]; clk++) {
	51	ret = clk_prepare_enable(priv->clks[clk]);
	52	if (ret)
	53	goto err_disable_clks;
	54	}
	55
ca52a17b HG	56	return 0;
ca52a17b HG	57
ca52a17b HG	58	err_disable_clks:
	59	while (--clk >= 0)
	60	clk_disable_unprepare(priv->clks[clk]);
	61
	62	return ret;
	63	}
	64
	65	static void ohci_platform_power_off(struct platform_device *dev)
	66	{
	67	struct usb_hcd *hcd = platform_get_drvdata(dev);
	68	struct ohci_platform_priv *priv = hcd_to_ohci_priv(hcd);
1255dfd1	69	int clk;
ca52a17b HG	70
	71	for (clk = OHCI_MAX_CLKS - 1; clk >= 0; clk--)
	72	if (priv->clks[clk])
	73	clk_disable_unprepare(priv->clks[clk]);
	74	}
	75
928fb68e	76	static struct hc_driver __read_mostly ohci_platform_hc_driver;
fa3364b5	77
928fb68e	78	static const struct ohci_driver_overrides platform_overrides __initconst = {
ca52a17b	79	.product_desc = "Generic Platform OHCI controller",
ca52a17b HG	80	.extra_priv_size = sizeof(struct ohci_platform_priv),
	81	};
	82
	83	static struct usb_ohci_pdata ohci_platform_defaults = {
	84	.power_on = ohci_platform_power_on,
	85	.power_suspend = ohci_platform_power_off,
	86	.power_off = ohci_platform_power_off,
fa3364b5 HM	87	};
fa3364b5 HM	88
41ac7b3a	89	static int ohci_platform_probe(struct platform_device *dev)
fa3364b5 HM	90	{
	91	struct usb_hcd *hcd;
	92	struct resource *res_mem;
d4f09e28	93	struct usb_ohci_pdata *pdata = dev_get_platdata(&dev->dev);
ca52a17b	94	struct ohci_platform_priv *priv;
b1034412	95	struct ohci_hcd *ohci;
1255dfd1	96	int err, irq, clk = 0;
fa3364b5 HM	97
	98	if (usb_disabled())
	99	return -ENODEV;
	100
ca52a17b HG	101	/*
	102	* Use reasonable defaults so platforms don't have to provide these
	103	* with DT probing on ARM.
	104	*/
	105	if (!pdata)
	106	pdata = &ohci_platform_defaults;
	107
	108	err = dma_coerce_mask_and_coherent(&dev->dev, DMA_BIT_MASK(32));
	109	if (err)
	110	return err;
	111
fa3364b5	112	irq = platform_get_irq(dev, 0);
b33f3706	113	if (irq < 0)
fa3364b5	114	return irq;
fa3364b5	115
ca52a17b HG	116	hcd = usb_create_hcd(&ohci_platform_hc_driver, &dev->dev,
	117	dev_name(&dev->dev));
	118	if (!hcd)
	119	return -ENOMEM;
	120
	121	platform_set_drvdata(dev, hcd);
	122	dev->dev.platform_data = pdata;
	123	priv = hcd_to_ohci_priv(hcd);
b1034412	124	ohci = hcd_to_ohci(hcd);
ca52a17b HG	125
ca52a17b HG	126	if (pdata == &ohci_platform_defaults && dev->dev.of_node) {
b1034412 HG	127	if (of_property_read_bool(dev->dev.of_node, "big-endian-regs"))
	128	ohci->flags \|= OHCI_QUIRK_BE_MMIO;
	129
	130	if (of_property_read_bool(dev->dev.of_node, "big-endian-desc"))
	131	ohci->flags \|= OHCI_QUIRK_BE_DESC;
	132
	133	if (of_property_read_bool(dev->dev.of_node, "big-endian"))
	134	ohci->flags \|= OHCI_QUIRK_BE_MMIO \| OHCI_QUIRK_BE_DESC;
	135
c4b8692a KC	136	if (of_property_read_bool(dev->dev.of_node, "no-big-frame-no"))
	137	ohci->flags \|= OHCI_QUIRK_FRAME_NO;
	138
2545d853 TL	139	if (of_property_read_bool(dev->dev.of_node,
	140	"remote-wakeup-connected"))
	141	ohci->hc_control = OHCI_CTRL_RWC;
	142
c4b8692a KC	143	of_property_read_u32(dev->dev.of_node, "num-ports",
	144	&ohci->num_ports);
	145
ca52a17b HG	146	for (clk = 0; clk < OHCI_MAX_CLKS; clk++) {
	147	priv->clks[clk] = of_clk_get(dev->dev.of_node, clk);
	148	if (IS_ERR(priv->clks[clk])) {
	149	err = PTR_ERR(priv->clks[clk]);
	150	if (err == -EPROBE_DEFER)
	151	goto err_put_clks;
	152	priv->clks[clk] = NULL;
	153	break;
	154	}
	155	}
20a7f3ad MY	156
	157	priv->resets = devm_reset_control_array_get_optional_shared(
	158	&dev->dev);
	159	if (IS_ERR(priv->resets)) {
	160	err = PTR_ERR(priv->resets);
	161	goto err_put_clks;
62d9694a	162	}
20a7f3ad MY	163
	164	err = reset_control_deassert(priv->resets);
	165	if (err)
	166	goto err_put_clks;
ca52a17b HG	167	}
ca52a17b HG	168
adff5295 AS	169	if (pdata->big_endian_desc)
	170	ohci->flags \|= OHCI_QUIRK_BE_DESC;
	171	if (pdata->big_endian_mmio)
	172	ohci->flags \|= OHCI_QUIRK_BE_MMIO;
46f21949 KC	173	if (pdata->no_big_frame_no)
	174	ohci->flags \|= OHCI_QUIRK_FRAME_NO;
	175	if (pdata->num_ports)
	176	ohci->num_ports = pdata->num_ports;
adff5295 AS	177
	178	#ifndef CONFIG_USB_OHCI_BIG_ENDIAN_MMIO
	179	if (ohci->flags & OHCI_QUIRK_BE_MMIO) {
	180	dev_err(&dev->dev,
	181	"Error: CONFIG_USB_OHCI_BIG_ENDIAN_MMIO not set\n");
	182	err = -EINVAL;
4615f3bd	183	goto err_reset;
adff5295 AS	184	}
	185	#endif
	186	#ifndef CONFIG_USB_OHCI_BIG_ENDIAN_DESC
	187	if (ohci->flags & OHCI_QUIRK_BE_DESC) {
	188	dev_err(&dev->dev,
	189	"Error: CONFIG_USB_OHCI_BIG_ENDIAN_DESC not set\n");
	190	err = -EINVAL;
4615f3bd	191	goto err_reset;
adff5295 AS	192	}
	193	#endif
	194
0aa0b93e TL	195	pm_runtime_set_active(&dev->dev);
0aa0b93e TL	196	pm_runtime_enable(&dev->dev);
e4d37aeb KM	197	if (pdata->power_on) {
	198	err = pdata->power_on(dev);
	199	if (err < 0)
4615f3bd	200	goto err_reset;
e4d37aeb	201	}
fa3364b5	202
7b519291	203	res_mem = platform_get_resource(dev, IORESOURCE_MEM, 0);
148e1134 TR	204	hcd->regs = devm_ioremap_resource(&dev->dev, res_mem);
	205	if (IS_ERR(hcd->regs)) {
	206	err = PTR_ERR(hcd->regs);
ca52a17b	207	goto err_power;
aece389e	208	}
7b519291 VB	209	hcd->rsrc_start = res_mem->start;
	210	hcd->rsrc_len = resource_size(res_mem);
	211
281aec87 AD	212	hcd->tpl_support = of_usb_host_tpl_support(dev->dev.of_node);
281aec87 AD	213
fa3364b5 HM	214	err = usb_add_hcd(hcd, irq, IRQF_SHARED);
fa3364b5 HM	215	if (err)
ca52a17b	216	goto err_power;
fa3364b5	217
3c9740a1 PC	218	device_wakeup_enable(hcd->self.controller);
3c9740a1 PC	219
fa3364b5 HM	220	platform_set_drvdata(dev, hcd);
	221
	222	return err;
	223
e4d37aeb KM	224	err_power:
	225	if (pdata->power_off)
	226	pdata->power_off(dev);
4615f3bd	227	err_reset:
0aa0b93e	228	pm_runtime_disable(&dev->dev);
20a7f3ad	229	reset_control_assert(priv->resets);
ca52a17b HG	230	err_put_clks:
	231	while (--clk >= 0)
	232	clk_put(priv->clks[clk]);
1255dfd1	233
ca52a17b HG	234	if (pdata == &ohci_platform_defaults)
	235	dev->dev.platform_data = NULL;
	236
	237	usb_put_hcd(hcd);
e4d37aeb	238
fa3364b5 HM	239	return err;
	240	}
	241
fb4e98ab	242	static int ohci_platform_remove(struct platform_device *dev)
fa3364b5 HM	243	{
fa3364b5 HM	244	struct usb_hcd *hcd = platform_get_drvdata(dev);
d4f09e28	245	struct usb_ohci_pdata *pdata = dev_get_platdata(&dev->dev);
ca52a17b	246	struct ohci_platform_priv *priv = hcd_to_ohci_priv(hcd);
20a7f3ad	247	int clk;
fa3364b5	248
0aa0b93e	249	pm_runtime_get_sync(&dev->dev);
fa3364b5	250	usb_remove_hcd(hcd);
fa3364b5	251
e4d37aeb KM	252	if (pdata->power_off)
	253	pdata->power_off(dev);
	254
20a7f3ad	255	reset_control_assert(priv->resets);
4615f3bd	256
ca52a17b HG	257	for (clk = 0; clk < OHCI_MAX_CLKS && priv->clks[clk]; clk++)
	258	clk_put(priv->clks[clk]);
	259
	260	usb_put_hcd(hcd);
	261
0aa0b93e TL	262	pm_runtime_put_sync(&dev->dev);
	263	pm_runtime_disable(&dev->dev);
	264
ca52a17b HG	265	if (pdata == &ohci_platform_defaults)
	266	dev->dev.platform_data = NULL;
	267
fa3364b5 HM	268	return 0;
	269	}
	270
5e4ccd9e	271	#ifdef CONFIG_PM_SLEEP
fa3364b5 HM	272	static int ohci_platform_suspend(struct device *dev)
fa3364b5 HM	273	{
39dbd7df MG	274	struct usb_hcd *hcd = dev_get_drvdata(dev);
39dbd7df MG	275	struct usb_ohci_pdata *pdata = dev->platform_data;
20db5513	276	struct platform_device *pdev = to_platform_device(dev);
39dbd7df MG	277	bool do_wakeup = device_may_wakeup(dev);
	278	int ret;
	279
	280	ret = ohci_suspend(hcd, do_wakeup);
	281	if (ret)
	282	return ret;
e4d37aeb KM	283
	284	if (pdata->power_suspend)
	285	pdata->power_suspend(pdev);
	286
39dbd7df	287	return ret;
fa3364b5 HM	288	}
fa3364b5 HM	289
f3d47885	290	static int ohci_platform_resume_common(struct device *dev, bool hibernated)
fa3364b5 HM	291	{
fa3364b5 HM	292	struct usb_hcd *hcd = dev_get_drvdata(dev);
d4f09e28	293	struct usb_ohci_pdata *pdata = dev_get_platdata(dev);
20db5513	294	struct platform_device *pdev = to_platform_device(dev);
e4d37aeb KM	295
	296	if (pdata->power_on) {
	297	int err = pdata->power_on(pdev);
	298	if (err < 0)
	299	return err;
	300	}
fa3364b5	301
f3d47885	302	ohci_resume(hcd, hibernated);
1cb3b009 QY	303
	304	pm_runtime_disable(dev);
	305	pm_runtime_set_active(dev);
	306	pm_runtime_enable(dev);
	307
fa3364b5 HM	308	return 0;
fa3364b5 HM	309	}
f3d47885 YZ	310
	311	static int ohci_platform_resume(struct device *dev)
	312	{
	313	return ohci_platform_resume_common(dev, false);
	314	}
	315
	316	static int ohci_platform_restore(struct device *dev)
	317	{
	318	return ohci_platform_resume_common(dev, true);
	319	}
5e4ccd9e	320	#endif /* CONFIG_PM_SLEEP */
fa3364b5	321
ca52a17b	322	static const struct of_device_id ohci_platform_ids[] = {
ce149c30	323	{ .compatible = "generic-ohci", },
a95cfa6b	324	{ .compatible = "cavium,octeon-6335-ohci", },
2545d853	325	{ .compatible = "ti,ohci-omap3", },
ca52a17b HG	326	{ }
	327	};
	328	MODULE_DEVICE_TABLE(of, ohci_platform_ids);
	329
fa3364b5 HM	330	static const struct platform_device_id ohci_platform_table[] = {
	331	{ "ohci-platform", 0 },
	332	{ }
	333	};
	334	MODULE_DEVICE_TABLE(platform, ohci_platform_table);
	335
f3d47885 YZ	336	#ifdef CONFIG_PM_SLEEP
	337	static const struct dev_pm_ops ohci_platform_pm_ops = {
	338	.suspend = ohci_platform_suspend,
	339	.resume = ohci_platform_resume,
	340	.freeze = ohci_platform_suspend,
	341	.thaw = ohci_platform_resume,
	342	.poweroff = ohci_platform_suspend,
	343	.restore = ohci_platform_restore,
	344	};
	345	#endif
fa3364b5 HM	346
	347	static struct platform_driver ohci_platform_driver = {
	348	.id_table = ohci_platform_table,
	349	.probe = ohci_platform_probe,
7690417d	350	.remove = ohci_platform_remove,
fa3364b5 HM	351	.shutdown = usb_hcd_platform_shutdown,
fa3364b5 HM	352	.driver = {
fa3364b5	353	.name = "ohci-platform",
f3d47885	354	#ifdef CONFIG_PM_SLEEP
fa3364b5	355	.pm = &ohci_platform_pm_ops,
f3d47885	356	#endif
ca52a17b	357	.of_match_table = ohci_platform_ids,
69a1c9a9	358	.probe_type = PROBE_PREFER_ASYNCHRONOUS,
fa3364b5 HM	359	}
fa3364b5 HM	360	};
928fb68e MG	361
	362	static int __init ohci_platform_init(void)
	363	{
	364	if (usb_disabled())
	365	return -ENODEV;
	366
928fb68e MG	367	ohci_init_driver(&ohci_platform_hc_driver, &platform_overrides);
	368	return platform_driver_register(&ohci_platform_driver);
	369	}
	370	module_init(ohci_platform_init);
	371
	372	static void __exit ohci_platform_cleanup(void)
	373	{
	374	platform_driver_unregister(&ohci_platform_driver);
	375	}
	376	module_exit(ohci_platform_cleanup);
	377
	378	MODULE_DESCRIPTION(DRIVER_DESC);
	379	MODULE_AUTHOR("Hauke Mehrtens");
	380	MODULE_AUTHOR("Alan Stern");
	381	MODULE_LICENSE("GPL");