[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/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 *rst;
	struct phy **phys;
	int num_phys;
};

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, phy_num;

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

	for (phy_num = 0; phy_num < priv->num_phys; phy_num++) {
		ret = phy_init(priv->phys[phy_num]);
		if (ret)
			goto err_exit_phy;
		ret = phy_power_on(priv->phys[phy_num]);
		if (ret) {
			phy_exit(priv->phys[phy_num]);
			goto err_exit_phy;
		}
	}

	return 0;

err_exit_phy:
	while (--phy_num >= 0) {
		phy_power_off(priv->phys[phy_num]);
		phy_exit(priv->phys[phy_num]);
	}
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, phy_num;

	for (phy_num = 0; phy_num < priv->num_phys; phy_num++) {
		phy_power_off(priv->phys[phy_num]);
		phy_exit(priv->phys[phy_num]);
	}

	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, phy_num, 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;
	}

	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;

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

		priv->num_phys = of_count_phandle_with_args(dev->dev.of_node,
				"phys", "#phy-cells");

		if (priv->num_phys > 0) {
			priv->phys = devm_kcalloc(&dev->dev, priv->num_phys,
					    sizeof(struct phy *), GFP_KERNEL);
			if (!priv->phys)
				return -ENOMEM;
		} else
			priv->num_phys = 0;

		for (phy_num = 0; phy_num < priv->num_phys; phy_num++) {
			priv->phys[phy_num] = devm_of_phy_get_by_index(
					&dev->dev, dev->dev.of_node, phy_num);
			if (IS_ERR(priv->phys[phy_num])) {
				err = PTR_ERR(priv->phys[phy_num]);
				goto err_put_hcd;
			}
		}

		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->rst = devm_reset_control_get_optional(&dev->dev, NULL);
	if (IS_ERR(priv->rst)) {
		err = PTR_ERR(priv->rst);
		if (err == -EPROBE_DEFER)
			goto err_put_clks;
		priv->rst = NULL;
	} else {
		err = reset_control_deassert(priv->rst);
		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

	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:
	if (priv->rst)
		reset_control_assert(priv->rst);
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);

	if (priv->rst)
		reset_control_assert(priv->rst);

	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_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 =
		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;
}
#endif /* CONFIG_PM_SLEEP */

static const struct of_device_id ohci_platform_ids[] = {
	{ .compatible = "generic-ohci", },
	{ .compatible = "cavium,octeon-6335-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 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
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	26	#include <linux/platform_device.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];
4615f3bd	40	struct reset_control *rst;
85cd690d AR	41	struct phy **phys;
85cd690d AR	42	int num_phys;
ca52a17b	43	};
928fb68e MG	44
928fb68e MG	45	static const char hcd_name[] = "ohci-platform";
fa3364b5	46
ca52a17b HG	47	static int ohci_platform_power_on(struct platform_device *dev)
	48	{
	49	struct usb_hcd *hcd = platform_get_drvdata(dev);
	50	struct ohci_platform_priv *priv = hcd_to_ohci_priv(hcd);
85cd690d	51	int clk, ret, phy_num;
ca52a17b HG	52
	53	for (clk = 0; clk < OHCI_MAX_CLKS && priv->clks[clk]; clk++) {
	54	ret = clk_prepare_enable(priv->clks[clk]);
	55	if (ret)
	56	goto err_disable_clks;
	57	}
	58
85cd690d	59	for (phy_num = 0; phy_num < priv->num_phys; phy_num++) {
a666f7d0 AR	60	ret = phy_init(priv->phys[phy_num]);
	61	if (ret)
	62	goto err_exit_phy;
	63	ret = phy_power_on(priv->phys[phy_num]);
	64	if (ret) {
	65	phy_exit(priv->phys[phy_num]);
	66	goto err_exit_phy;
85cd690d	67	}
ca52a17b HG	68	}
	69
	70	return 0;
	71
	72	err_exit_phy:
85cd690d	73	while (--phy_num >= 0) {
a666f7d0 AR	74	phy_power_off(priv->phys[phy_num]);
a666f7d0 AR	75	phy_exit(priv->phys[phy_num]);
85cd690d	76	}
ca52a17b HG	77	err_disable_clks:
	78	while (--clk >= 0)
	79	clk_disable_unprepare(priv->clks[clk]);
	80
	81	return ret;
	82	}
	83
	84	static void ohci_platform_power_off(struct platform_device *dev)
	85	{
	86	struct usb_hcd *hcd = platform_get_drvdata(dev);
	87	struct ohci_platform_priv *priv = hcd_to_ohci_priv(hcd);
85cd690d	88	int clk, phy_num;
ca52a17b	89
85cd690d	90	for (phy_num = 0; phy_num < priv->num_phys; phy_num++) {
a666f7d0 AR	91	phy_power_off(priv->phys[phy_num]);
a666f7d0 AR	92	phy_exit(priv->phys[phy_num]);
ca52a17b HG	93	}
	94
	95	for (clk = OHCI_MAX_CLKS - 1; clk >= 0; clk--)
	96	if (priv->clks[clk])
	97	clk_disable_unprepare(priv->clks[clk]);
	98	}
	99
928fb68e	100	static struct hc_driver __read_mostly ohci_platform_hc_driver;
fa3364b5	101
928fb68e	102	static const struct ohci_driver_overrides platform_overrides __initconst = {
ca52a17b	103	.product_desc = "Generic Platform OHCI controller",
ca52a17b HG	104	.extra_priv_size = sizeof(struct ohci_platform_priv),
	105	};
	106
	107	static struct usb_ohci_pdata ohci_platform_defaults = {
	108	.power_on = ohci_platform_power_on,
	109	.power_suspend = ohci_platform_power_off,
	110	.power_off = ohci_platform_power_off,
fa3364b5 HM	111	};
fa3364b5 HM	112
41ac7b3a	113	static int ohci_platform_probe(struct platform_device *dev)
fa3364b5 HM	114	{
	115	struct usb_hcd *hcd;
	116	struct resource *res_mem;
d4f09e28	117	struct usb_ohci_pdata *pdata = dev_get_platdata(&dev->dev);
ca52a17b	118	struct ohci_platform_priv *priv;
b1034412	119	struct ohci_hcd *ohci;
85cd690d	120	int err, irq, phy_num, clk = 0;
fa3364b5 HM	121
	122	if (usb_disabled())
	123	return -ENODEV;
	124
ca52a17b HG	125	/*
	126	* Use reasonable defaults so platforms don't have to provide these
	127	* with DT probing on ARM.
	128	*/
	129	if (!pdata)
	130	pdata = &ohci_platform_defaults;
	131
	132	err = dma_coerce_mask_and_coherent(&dev->dev, DMA_BIT_MASK(32));
	133	if (err)
	134	return err;
	135
fa3364b5 HM	136	irq = platform_get_irq(dev, 0);
fa3364b5 HM	137	if (irq < 0) {
976baf6e	138	dev_err(&dev->dev, "no irq provided");
fa3364b5 HM	139	return irq;
	140	}
	141
ca52a17b HG	142	hcd = usb_create_hcd(&ohci_platform_hc_driver, &dev->dev,
	143	dev_name(&dev->dev));
	144	if (!hcd)
	145	return -ENOMEM;
	146
	147	platform_set_drvdata(dev, hcd);
	148	dev->dev.platform_data = pdata;
	149	priv = hcd_to_ohci_priv(hcd);
b1034412	150	ohci = hcd_to_ohci(hcd);
ca52a17b HG	151
ca52a17b HG	152	if (pdata == &ohci_platform_defaults && dev->dev.of_node) {
b1034412 HG	153	if (of_property_read_bool(dev->dev.of_node, "big-endian-regs"))
	154	ohci->flags \|= OHCI_QUIRK_BE_MMIO;
	155
	156	if (of_property_read_bool(dev->dev.of_node, "big-endian-desc"))
	157	ohci->flags \|= OHCI_QUIRK_BE_DESC;
	158
	159	if (of_property_read_bool(dev->dev.of_node, "big-endian"))
	160	ohci->flags \|= OHCI_QUIRK_BE_MMIO \| OHCI_QUIRK_BE_DESC;
	161
c4b8692a KC	162	if (of_property_read_bool(dev->dev.of_node, "no-big-frame-no"))
	163	ohci->flags \|= OHCI_QUIRK_FRAME_NO;
	164
	165	of_property_read_u32(dev->dev.of_node, "num-ports",
	166	&ohci->num_ports);
	167
85cd690d AR	168	priv->num_phys = of_count_phandle_with_args(dev->dev.of_node,
85cd690d AR	169	"phys", "#phy-cells");
85cd690d	170
a666f7d0 AR	171	if (priv->num_phys > 0) {
	172	priv->phys = devm_kcalloc(&dev->dev, priv->num_phys,
	173	sizeof(struct phy *), GFP_KERNEL);
	174	if (!priv->phys)
	175	return -ENOMEM;
	176	} else
	177	priv->num_phys = 0;
85cd690d AR	178
85cd690d AR	179	for (phy_num = 0; phy_num < priv->num_phys; phy_num++) {
a666f7d0 AR	180	priv->phys[phy_num] = devm_of_phy_get_by_index(
	181	&dev->dev, dev->dev.of_node, phy_num);
	182	if (IS_ERR(priv->phys[phy_num])) {
	183	err = PTR_ERR(priv->phys[phy_num]);
	184	goto err_put_hcd;
	185	}
ca52a17b HG	186	}
	187
	188	for (clk = 0; clk < OHCI_MAX_CLKS; clk++) {
	189	priv->clks[clk] = of_clk_get(dev->dev.of_node, clk);
	190	if (IS_ERR(priv->clks[clk])) {
	191	err = PTR_ERR(priv->clks[clk]);
	192	if (err == -EPROBE_DEFER)
	193	goto err_put_clks;
	194	priv->clks[clk] = NULL;
	195	break;
	196	}
	197	}
4615f3bd MR	198
	199	}
	200
	201	priv->rst = devm_reset_control_get_optional(&dev->dev, NULL);
	202	if (IS_ERR(priv->rst)) {
	203	err = PTR_ERR(priv->rst);
	204	if (err == -EPROBE_DEFER)
	205	goto err_put_clks;
	206	priv->rst = NULL;
	207	} else {
	208	err = reset_control_deassert(priv->rst);
	209	if (err)
	210	goto err_put_clks;
ca52a17b HG	211	}
ca52a17b HG	212
adff5295 AS	213	if (pdata->big_endian_desc)
	214	ohci->flags \|= OHCI_QUIRK_BE_DESC;
	215	if (pdata->big_endian_mmio)
	216	ohci->flags \|= OHCI_QUIRK_BE_MMIO;
46f21949 KC	217	if (pdata->no_big_frame_no)
	218	ohci->flags \|= OHCI_QUIRK_FRAME_NO;
	219	if (pdata->num_ports)
	220	ohci->num_ports = pdata->num_ports;
adff5295 AS	221
	222	#ifndef CONFIG_USB_OHCI_BIG_ENDIAN_MMIO
	223	if (ohci->flags & OHCI_QUIRK_BE_MMIO) {
	224	dev_err(&dev->dev,
	225	"Error: CONFIG_USB_OHCI_BIG_ENDIAN_MMIO not set\n");
	226	err = -EINVAL;
4615f3bd	227	goto err_reset;
adff5295 AS	228	}
	229	#endif
	230	#ifndef CONFIG_USB_OHCI_BIG_ENDIAN_DESC
	231	if (ohci->flags & OHCI_QUIRK_BE_DESC) {
	232	dev_err(&dev->dev,
	233	"Error: CONFIG_USB_OHCI_BIG_ENDIAN_DESC not set\n");
	234	err = -EINVAL;
4615f3bd	235	goto err_reset;
adff5295 AS	236	}
	237	#endif
	238
e4d37aeb KM	239	if (pdata->power_on) {
	240	err = pdata->power_on(dev);
	241	if (err < 0)
4615f3bd	242	goto err_reset;
e4d37aeb	243	}
fa3364b5	244
7b519291	245	res_mem = platform_get_resource(dev, IORESOURCE_MEM, 0);
148e1134 TR	246	hcd->regs = devm_ioremap_resource(&dev->dev, res_mem);
	247	if (IS_ERR(hcd->regs)) {
	248	err = PTR_ERR(hcd->regs);
ca52a17b	249	goto err_power;
aece389e	250	}
7b519291 VB	251	hcd->rsrc_start = res_mem->start;
	252	hcd->rsrc_len = resource_size(res_mem);
	253
fa3364b5 HM	254	err = usb_add_hcd(hcd, irq, IRQF_SHARED);
fa3364b5 HM	255	if (err)
ca52a17b	256	goto err_power;
fa3364b5	257
3c9740a1 PC	258	device_wakeup_enable(hcd->self.controller);
3c9740a1 PC	259
fa3364b5 HM	260	platform_set_drvdata(dev, hcd);
	261
	262	return err;
	263
e4d37aeb KM	264	err_power:
	265	if (pdata->power_off)
	266	pdata->power_off(dev);
4615f3bd MR	267	err_reset:
	268	if (priv->rst)
	269	reset_control_assert(priv->rst);
ca52a17b HG	270	err_put_clks:
	271	while (--clk >= 0)
	272	clk_put(priv->clks[clk]);
	273	err_put_hcd:
	274	if (pdata == &ohci_platform_defaults)
	275	dev->dev.platform_data = NULL;
	276
	277	usb_put_hcd(hcd);
e4d37aeb	278
fa3364b5 HM	279	return err;
	280	}
	281
fb4e98ab	282	static int ohci_platform_remove(struct platform_device *dev)
fa3364b5 HM	283	{
fa3364b5 HM	284	struct usb_hcd *hcd = platform_get_drvdata(dev);
d4f09e28	285	struct usb_ohci_pdata *pdata = dev_get_platdata(&dev->dev);
ca52a17b HG	286	struct ohci_platform_priv *priv = hcd_to_ohci_priv(hcd);
ca52a17b HG	287	int clk;
fa3364b5 HM	288
fa3364b5 HM	289	usb_remove_hcd(hcd);
fa3364b5	290
e4d37aeb KM	291	if (pdata->power_off)
	292	pdata->power_off(dev);
	293
4615f3bd MR	294	if (priv->rst)
	295	reset_control_assert(priv->rst);
	296
ca52a17b HG	297	for (clk = 0; clk < OHCI_MAX_CLKS && priv->clks[clk]; clk++)
	298	clk_put(priv->clks[clk]);
	299
	300	usb_put_hcd(hcd);
	301
	302	if (pdata == &ohci_platform_defaults)
	303	dev->dev.platform_data = NULL;
	304
fa3364b5 HM	305	return 0;
	306	}
	307
5e4ccd9e	308	#ifdef CONFIG_PM_SLEEP
fa3364b5 HM	309	static int ohci_platform_suspend(struct device *dev)
fa3364b5 HM	310	{
39dbd7df MG	311	struct usb_hcd *hcd = dev_get_drvdata(dev);
39dbd7df MG	312	struct usb_ohci_pdata *pdata = dev->platform_data;
e4d37aeb KM	313	struct platform_device *pdev =
e4d37aeb KM	314	container_of(dev, struct platform_device, dev);
39dbd7df MG	315	bool do_wakeup = device_may_wakeup(dev);
	316	int ret;
	317
	318	ret = ohci_suspend(hcd, do_wakeup);
	319	if (ret)
	320	return ret;
e4d37aeb KM	321
	322	if (pdata->power_suspend)
	323	pdata->power_suspend(pdev);
	324
39dbd7df	325	return ret;
fa3364b5 HM	326	}
	327
	328	static int ohci_platform_resume(struct device *dev)
	329	{
	330	struct usb_hcd *hcd = dev_get_drvdata(dev);
d4f09e28	331	struct usb_ohci_pdata *pdata = dev_get_platdata(dev);
e4d37aeb KM	332	struct platform_device *pdev =
	333	container_of(dev, struct platform_device, dev);
	334
	335	if (pdata->power_on) {
	336	int err = pdata->power_on(pdev);
	337	if (err < 0)
	338	return err;
	339	}
fa3364b5	340
cfa49b4b	341	ohci_resume(hcd, false);
fa3364b5 HM	342	return 0;
fa3364b5 HM	343	}
5e4ccd9e	344	#endif /* CONFIG_PM_SLEEP */
fa3364b5	345
ca52a17b	346	static const struct of_device_id ohci_platform_ids[] = {
ce149c30	347	{ .compatible = "generic-ohci", },
a95cfa6b	348	{ .compatible = "cavium,octeon-6335-ohci", },
ca52a17b HG	349	{ }
	350	};
	351	MODULE_DEVICE_TABLE(of, ohci_platform_ids);
	352
fa3364b5 HM	353	static const struct platform_device_id ohci_platform_table[] = {
	354	{ "ohci-platform", 0 },
	355	{ }
	356	};
	357	MODULE_DEVICE_TABLE(platform, ohci_platform_table);
	358
5e4ccd9e WK	359	static SIMPLE_DEV_PM_OPS(ohci_platform_pm_ops, ohci_platform_suspend,
5e4ccd9e WK	360	ohci_platform_resume);
fa3364b5 HM	361
	362	static struct platform_driver ohci_platform_driver = {
	363	.id_table = ohci_platform_table,
	364	.probe = ohci_platform_probe,
7690417d	365	.remove = ohci_platform_remove,
fa3364b5 HM	366	.shutdown = usb_hcd_platform_shutdown,
fa3364b5 HM	367	.driver = {
fa3364b5 HM	368	.name = "ohci-platform",
fa3364b5 HM	369	.pm = &ohci_platform_pm_ops,
ca52a17b	370	.of_match_table = ohci_platform_ids,
fa3364b5 HM	371	}
fa3364b5 HM	372	};
928fb68e MG	373
	374	static int __init ohci_platform_init(void)
	375	{
	376	if (usb_disabled())
	377	return -ENODEV;
	378
	379	pr_info("%s: " DRIVER_DESC "\n", hcd_name);
	380
	381	ohci_init_driver(&ohci_platform_hc_driver, &platform_overrides);
	382	return platform_driver_register(&ohci_platform_driver);
	383	}
	384	module_init(ohci_platform_init);
	385
	386	static void __exit ohci_platform_cleanup(void)
	387	{
	388	platform_driver_unregister(&ohci_platform_driver);
	389	}
	390	module_exit(ohci_platform_cleanup);
	391
	392	MODULE_DESCRIPTION(DRIVER_DESC);
	393	MODULE_AUTHOR("Hauke Mehrtens");
	394	MODULE_AUTHOR("Alan Stern");
	395	MODULE_LICENSE("GPL");