[mirror_ubuntu-jammy-kernel.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 "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 const char hcd_name[] = "ohci-platform";

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);

	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(struct device *dev)
{
	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, false);

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

	return 0;
}
#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);

static SIMPLE_DEV_PM_OPS(ohci_platform_pm_ops, ohci_platform_suspend,
	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		= {
		.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
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>
	30	#include <linux/usb/hcd.h>
	31
	32	#include "ohci.h"
	33
	34	#define DRIVER_DESC "OHCI generic platform driver"
ca52a17b HG	35	#define OHCI_MAX_CLKS 3
	36	#define hcd_to_ohci_priv(h) ((struct ohci_platform_priv *)hcd_to_ohci(h)->priv)
	37
	38	struct ohci_platform_priv {
	39	struct clk *clks[OHCI_MAX_CLKS];
20a7f3ad	40	struct reset_control *resets;
ca52a17b	41	};
928fb68e MG	42
928fb68e MG	43	static const char hcd_name[] = "ohci-platform";
fa3364b5	44
ca52a17b HG	45	static int ohci_platform_power_on(struct platform_device *dev)
	46	{
	47	struct usb_hcd *hcd = platform_get_drvdata(dev);
	48	struct ohci_platform_priv *priv = hcd_to_ohci_priv(hcd);
1255dfd1	49	int clk, ret;
ca52a17b HG	50
	51	for (clk = 0; clk < OHCI_MAX_CLKS && priv->clks[clk]; clk++) {
	52	ret = clk_prepare_enable(priv->clks[clk]);
	53	if (ret)
	54	goto err_disable_clks;
	55	}
	56
ca52a17b HG	57	return 0;
ca52a17b HG	58
ca52a17b HG	59	err_disable_clks:
	60	while (--clk >= 0)
	61	clk_disable_unprepare(priv->clks[clk]);
	62
	63	return ret;
	64	}
	65
	66	static void ohci_platform_power_off(struct platform_device *dev)
	67	{
	68	struct usb_hcd *hcd = platform_get_drvdata(dev);
	69	struct ohci_platform_priv *priv = hcd_to_ohci_priv(hcd);
1255dfd1	70	int clk;
ca52a17b HG	71
	72	for (clk = OHCI_MAX_CLKS - 1; clk >= 0; clk--)
	73	if (priv->clks[clk])
	74	clk_disable_unprepare(priv->clks[clk]);
	75	}
	76
928fb68e	77	static struct hc_driver __read_mostly ohci_platform_hc_driver;
fa3364b5	78
928fb68e	79	static const struct ohci_driver_overrides platform_overrides __initconst = {
ca52a17b	80	.product_desc = "Generic Platform OHCI controller",
ca52a17b HG	81	.extra_priv_size = sizeof(struct ohci_platform_priv),
	82	};
	83
	84	static struct usb_ohci_pdata ohci_platform_defaults = {
	85	.power_on = ohci_platform_power_on,
	86	.power_suspend = ohci_platform_power_off,
	87	.power_off = ohci_platform_power_off,
fa3364b5 HM	88	};
fa3364b5 HM	89
41ac7b3a	90	static int ohci_platform_probe(struct platform_device *dev)
fa3364b5 HM	91	{
	92	struct usb_hcd *hcd;
	93	struct resource *res_mem;
d4f09e28	94	struct usb_ohci_pdata *pdata = dev_get_platdata(&dev->dev);
ca52a17b	95	struct ohci_platform_priv *priv;
b1034412	96	struct ohci_hcd *ohci;
1255dfd1	97	int err, irq, clk = 0;
fa3364b5 HM	98
	99	if (usb_disabled())
	100	return -ENODEV;
	101
ca52a17b HG	102	/*
	103	* Use reasonable defaults so platforms don't have to provide these
	104	* with DT probing on ARM.
	105	*/
	106	if (!pdata)
	107	pdata = &ohci_platform_defaults;
	108
	109	err = dma_coerce_mask_and_coherent(&dev->dev, DMA_BIT_MASK(32));
	110	if (err)
	111	return err;
	112
fa3364b5	113	irq = platform_get_irq(dev, 0);
b33f3706	114	if (irq < 0)
fa3364b5	115	return irq;
fa3364b5	116
ca52a17b HG	117	hcd = usb_create_hcd(&ohci_platform_hc_driver, &dev->dev,
	118	dev_name(&dev->dev));
	119	if (!hcd)
	120	return -ENOMEM;
	121
	122	platform_set_drvdata(dev, hcd);
	123	dev->dev.platform_data = pdata;
	124	priv = hcd_to_ohci_priv(hcd);
b1034412	125	ohci = hcd_to_ohci(hcd);
ca52a17b HG	126
ca52a17b HG	127	if (pdata == &ohci_platform_defaults && dev->dev.of_node) {
b1034412 HG	128	if (of_property_read_bool(dev->dev.of_node, "big-endian-regs"))
	129	ohci->flags \|= OHCI_QUIRK_BE_MMIO;
	130
	131	if (of_property_read_bool(dev->dev.of_node, "big-endian-desc"))
	132	ohci->flags \|= OHCI_QUIRK_BE_DESC;
	133
	134	if (of_property_read_bool(dev->dev.of_node, "big-endian"))
	135	ohci->flags \|= OHCI_QUIRK_BE_MMIO \| OHCI_QUIRK_BE_DESC;
	136
c4b8692a KC	137	if (of_property_read_bool(dev->dev.of_node, "no-big-frame-no"))
	138	ohci->flags \|= OHCI_QUIRK_FRAME_NO;
	139
2545d853 TL	140	if (of_property_read_bool(dev->dev.of_node,
	141	"remote-wakeup-connected"))
	142	ohci->hc_control = OHCI_CTRL_RWC;
	143
c4b8692a KC	144	of_property_read_u32(dev->dev.of_node, "num-ports",
	145	&ohci->num_ports);
	146
ca52a17b HG	147	for (clk = 0; clk < OHCI_MAX_CLKS; clk++) {
	148	priv->clks[clk] = of_clk_get(dev->dev.of_node, clk);
	149	if (IS_ERR(priv->clks[clk])) {
	150	err = PTR_ERR(priv->clks[clk]);
	151	if (err == -EPROBE_DEFER)
	152	goto err_put_clks;
	153	priv->clks[clk] = NULL;
	154	break;
	155	}
	156	}
20a7f3ad MY	157
	158	priv->resets = devm_reset_control_array_get_optional_shared(
	159	&dev->dev);
	160	if (IS_ERR(priv->resets)) {
	161	err = PTR_ERR(priv->resets);
	162	goto err_put_clks;
62d9694a	163	}
20a7f3ad MY	164
	165	err = reset_control_deassert(priv->resets);
	166	if (err)
	167	goto err_put_clks;
ca52a17b HG	168	}
ca52a17b HG	169
adff5295 AS	170	if (pdata->big_endian_desc)
	171	ohci->flags \|= OHCI_QUIRK_BE_DESC;
	172	if (pdata->big_endian_mmio)
	173	ohci->flags \|= OHCI_QUIRK_BE_MMIO;
46f21949 KC	174	if (pdata->no_big_frame_no)
	175	ohci->flags \|= OHCI_QUIRK_FRAME_NO;
	176	if (pdata->num_ports)
	177	ohci->num_ports = pdata->num_ports;
adff5295 AS	178
	179	#ifndef CONFIG_USB_OHCI_BIG_ENDIAN_MMIO
	180	if (ohci->flags & OHCI_QUIRK_BE_MMIO) {
	181	dev_err(&dev->dev,
	182	"Error: CONFIG_USB_OHCI_BIG_ENDIAN_MMIO not set\n");
	183	err = -EINVAL;
4615f3bd	184	goto err_reset;
adff5295 AS	185	}
	186	#endif
	187	#ifndef CONFIG_USB_OHCI_BIG_ENDIAN_DESC
	188	if (ohci->flags & OHCI_QUIRK_BE_DESC) {
	189	dev_err(&dev->dev,
	190	"Error: CONFIG_USB_OHCI_BIG_ENDIAN_DESC not set\n");
	191	err = -EINVAL;
4615f3bd	192	goto err_reset;
adff5295 AS	193	}
	194	#endif
	195
0aa0b93e TL	196	pm_runtime_set_active(&dev->dev);
0aa0b93e TL	197	pm_runtime_enable(&dev->dev);
e4d37aeb KM	198	if (pdata->power_on) {
	199	err = pdata->power_on(dev);
	200	if (err < 0)
4615f3bd	201	goto err_reset;
e4d37aeb	202	}
fa3364b5	203
7b519291	204	res_mem = platform_get_resource(dev, IORESOURCE_MEM, 0);
148e1134 TR	205	hcd->regs = devm_ioremap_resource(&dev->dev, res_mem);
	206	if (IS_ERR(hcd->regs)) {
	207	err = PTR_ERR(hcd->regs);
ca52a17b	208	goto err_power;
aece389e	209	}
7b519291 VB	210	hcd->rsrc_start = res_mem->start;
	211	hcd->rsrc_len = resource_size(res_mem);
	212
fa3364b5 HM	213	err = usb_add_hcd(hcd, irq, IRQF_SHARED);
fa3364b5 HM	214	if (err)
ca52a17b	215	goto err_power;
fa3364b5	216
3c9740a1 PC	217	device_wakeup_enable(hcd->self.controller);
3c9740a1 PC	218
fa3364b5 HM	219	platform_set_drvdata(dev, hcd);
	220
	221	return err;
	222
e4d37aeb KM	223	err_power:
	224	if (pdata->power_off)
	225	pdata->power_off(dev);
4615f3bd	226	err_reset:
0aa0b93e	227	pm_runtime_disable(&dev->dev);
20a7f3ad	228	reset_control_assert(priv->resets);
ca52a17b HG	229	err_put_clks:
	230	while (--clk >= 0)
	231	clk_put(priv->clks[clk]);
1255dfd1	232
ca52a17b HG	233	if (pdata == &ohci_platform_defaults)
	234	dev->dev.platform_data = NULL;
	235
	236	usb_put_hcd(hcd);
e4d37aeb	237
fa3364b5 HM	238	return err;
	239	}
	240
fb4e98ab	241	static int ohci_platform_remove(struct platform_device *dev)
fa3364b5 HM	242	{
fa3364b5 HM	243	struct usb_hcd *hcd = platform_get_drvdata(dev);
d4f09e28	244	struct usb_ohci_pdata *pdata = dev_get_platdata(&dev->dev);
ca52a17b	245	struct ohci_platform_priv *priv = hcd_to_ohci_priv(hcd);
20a7f3ad	246	int clk;
fa3364b5	247
0aa0b93e	248	pm_runtime_get_sync(&dev->dev);
fa3364b5	249	usb_remove_hcd(hcd);
fa3364b5	250
e4d37aeb KM	251	if (pdata->power_off)
	252	pdata->power_off(dev);
	253
20a7f3ad	254	reset_control_assert(priv->resets);
4615f3bd	255
ca52a17b HG	256	for (clk = 0; clk < OHCI_MAX_CLKS && priv->clks[clk]; clk++)
	257	clk_put(priv->clks[clk]);
	258
	259	usb_put_hcd(hcd);
	260
0aa0b93e TL	261	pm_runtime_put_sync(&dev->dev);
	262	pm_runtime_disable(&dev->dev);
	263
ca52a17b HG	264	if (pdata == &ohci_platform_defaults)
	265	dev->dev.platform_data = NULL;
	266
fa3364b5 HM	267	return 0;
	268	}
	269
5e4ccd9e	270	#ifdef CONFIG_PM_SLEEP
fa3364b5 HM	271	static int ohci_platform_suspend(struct device *dev)
fa3364b5 HM	272	{
39dbd7df MG	273	struct usb_hcd *hcd = dev_get_drvdata(dev);
39dbd7df MG	274	struct usb_ohci_pdata *pdata = dev->platform_data;
20db5513	275	struct platform_device *pdev = to_platform_device(dev);
39dbd7df MG	276	bool do_wakeup = device_may_wakeup(dev);
	277	int ret;
	278
	279	ret = ohci_suspend(hcd, do_wakeup);
	280	if (ret)
	281	return ret;
e4d37aeb KM	282
	283	if (pdata->power_suspend)
	284	pdata->power_suspend(pdev);
	285
39dbd7df	286	return ret;
fa3364b5 HM	287	}
	288
	289	static int ohci_platform_resume(struct device *dev)
	290	{
	291	struct usb_hcd *hcd = dev_get_drvdata(dev);
d4f09e28	292	struct usb_ohci_pdata *pdata = dev_get_platdata(dev);
20db5513	293	struct platform_device *pdev = to_platform_device(dev);
e4d37aeb KM	294
	295	if (pdata->power_on) {
	296	int err = pdata->power_on(pdev);
	297	if (err < 0)
	298	return err;
	299	}
fa3364b5	300
cfa49b4b	301	ohci_resume(hcd, false);
1cb3b009 QY	302
	303	pm_runtime_disable(dev);
	304	pm_runtime_set_active(dev);
	305	pm_runtime_enable(dev);
	306
fa3364b5 HM	307	return 0;
fa3364b5 HM	308	}
5e4ccd9e	309	#endif /* CONFIG_PM_SLEEP */
fa3364b5	310
ca52a17b	311	static const struct of_device_id ohci_platform_ids[] = {
ce149c30	312	{ .compatible = "generic-ohci", },
a95cfa6b	313	{ .compatible = "cavium,octeon-6335-ohci", },
2545d853	314	{ .compatible = "ti,ohci-omap3", },
ca52a17b HG	315	{ }
	316	};
	317	MODULE_DEVICE_TABLE(of, ohci_platform_ids);
	318
fa3364b5 HM	319	static const struct platform_device_id ohci_platform_table[] = {
	320	{ "ohci-platform", 0 },
	321	{ }
	322	};
	323	MODULE_DEVICE_TABLE(platform, ohci_platform_table);
	324
5e4ccd9e WK	325	static SIMPLE_DEV_PM_OPS(ohci_platform_pm_ops, ohci_platform_suspend,
5e4ccd9e WK	326	ohci_platform_resume);
fa3364b5 HM	327
	328	static struct platform_driver ohci_platform_driver = {
	329	.id_table = ohci_platform_table,
	330	.probe = ohci_platform_probe,
7690417d	331	.remove = ohci_platform_remove,
fa3364b5 HM	332	.shutdown = usb_hcd_platform_shutdown,
fa3364b5 HM	333	.driver = {
fa3364b5 HM	334	.name = "ohci-platform",
fa3364b5 HM	335	.pm = &ohci_platform_pm_ops,
ca52a17b	336	.of_match_table = ohci_platform_ids,
fa3364b5 HM	337	}
fa3364b5 HM	338	};
928fb68e MG	339
	340	static int __init ohci_platform_init(void)
	341	{
	342	if (usb_disabled())
	343	return -ENODEV;
	344
	345	pr_info("%s: " DRIVER_DESC "\n", hcd_name);
	346
	347	ohci_init_driver(&ohci_platform_hc_driver, &platform_overrides);
	348	return platform_driver_register(&ohci_platform_driver);
	349	}
	350	module_init(ohci_platform_init);
	351
	352	static void __exit ohci_platform_cleanup(void)
	353	{
	354	platform_driver_unregister(&ohci_platform_driver);
	355	}
	356	module_exit(ohci_platform_cleanup);
	357
	358	MODULE_DESCRIPTION(DRIVER_DESC);
	359	MODULE_AUTHOR("Hauke Mehrtens");
	360	MODULE_AUTHOR("Alan Stern");
	361	MODULE_LICENSE("GPL");