[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++) {
		if (priv->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) {
		if (priv->phys[phy_num]) {
			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++) {
		if (priv->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;
	const char *phy_name;
	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");
		priv->num_phys = priv->num_phys > 0 ? priv->num_phys : 1;

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

		for (phy_num = 0; phy_num < priv->num_phys; phy_num++) {
				err = of_property_read_string_index(
						dev->dev.of_node,
						"phy-names", phy_num,
						&phy_name);

				if (err < 0) {
					if (priv->num_phys > 1) {
						dev_err(&dev->dev, "phy-names not provided");
						goto err_put_hcd;
					} else
						phy_name = "usb";
				}

				priv->phys[phy_num] = devm_phy_get(&dev->dev,
						phy_name);
				if (IS_ERR(priv->phys[phy_num])) {
					err = PTR_ERR(priv->phys[phy_num]);
					if ((priv->num_phys > 1) ||
					    (err == -EPROBE_DEFER))
						goto err_put_hcd;
					priv->phys[phy_num] = 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;
			}
		}

	}

	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 AR	59	for (phy_num = 0; phy_num < priv->num_phys; phy_num++) {
	60	if (priv->phys[phy_num]) {
	61	ret = phy_init(priv->phys[phy_num]);
	62	if (ret)
	63	goto err_exit_phy;
	64	ret = phy_power_on(priv->phys[phy_num]);
	65	if (ret) {
	66	phy_exit(priv->phys[phy_num]);
	67	goto err_exit_phy;
	68	}
	69	}
ca52a17b HG	70	}
	71
	72	return 0;
	73
	74	err_exit_phy:
85cd690d AR	75	while (--phy_num >= 0) {
	76	if (priv->phys[phy_num]) {
	77	phy_power_off(priv->phys[phy_num]);
	78	phy_exit(priv->phys[phy_num]);
	79	}
	80	}
ca52a17b HG	81	err_disable_clks:
	82	while (--clk >= 0)
	83	clk_disable_unprepare(priv->clks[clk]);
	84
	85	return ret;
	86	}
	87
	88	static void ohci_platform_power_off(struct platform_device *dev)
	89	{
	90	struct usb_hcd *hcd = platform_get_drvdata(dev);
	91	struct ohci_platform_priv *priv = hcd_to_ohci_priv(hcd);
85cd690d	92	int clk, phy_num;
ca52a17b	93
85cd690d AR	94	for (phy_num = 0; phy_num < priv->num_phys; phy_num++) {
	95	if (priv->phys[phy_num]) {
	96	phy_power_off(priv->phys[phy_num]);
	97	phy_exit(priv->phys[phy_num]);
	98	}
ca52a17b HG	99	}
	100
	101	for (clk = OHCI_MAX_CLKS - 1; clk >= 0; clk--)
	102	if (priv->clks[clk])
	103	clk_disable_unprepare(priv->clks[clk]);
	104	}
	105
928fb68e	106	static struct hc_driver __read_mostly ohci_platform_hc_driver;
fa3364b5	107
928fb68e	108	static const struct ohci_driver_overrides platform_overrides __initconst = {
ca52a17b	109	.product_desc = "Generic Platform OHCI controller",
ca52a17b HG	110	.extra_priv_size = sizeof(struct ohci_platform_priv),
	111	};
	112
	113	static struct usb_ohci_pdata ohci_platform_defaults = {
	114	.power_on = ohci_platform_power_on,
	115	.power_suspend = ohci_platform_power_off,
	116	.power_off = ohci_platform_power_off,
fa3364b5 HM	117	};
fa3364b5 HM	118
41ac7b3a	119	static int ohci_platform_probe(struct platform_device *dev)
fa3364b5 HM	120	{
	121	struct usb_hcd *hcd;
	122	struct resource *res_mem;
d4f09e28	123	struct usb_ohci_pdata *pdata = dev_get_platdata(&dev->dev);
ca52a17b	124	struct ohci_platform_priv *priv;
b1034412	125	struct ohci_hcd *ohci;
85cd690d AR	126	const char *phy_name;
85cd690d AR	127	int err, irq, phy_num, clk = 0;
fa3364b5 HM	128
	129	if (usb_disabled())
	130	return -ENODEV;
	131
ca52a17b HG	132	/*
	133	* Use reasonable defaults so platforms don't have to provide these
	134	* with DT probing on ARM.
	135	*/
	136	if (!pdata)
	137	pdata = &ohci_platform_defaults;
	138
	139	err = dma_coerce_mask_and_coherent(&dev->dev, DMA_BIT_MASK(32));
	140	if (err)
	141	return err;
	142
fa3364b5 HM	143	irq = platform_get_irq(dev, 0);
fa3364b5 HM	144	if (irq < 0) {
976baf6e	145	dev_err(&dev->dev, "no irq provided");
fa3364b5 HM	146	return irq;
	147	}
	148
ca52a17b HG	149	hcd = usb_create_hcd(&ohci_platform_hc_driver, &dev->dev,
	150	dev_name(&dev->dev));
	151	if (!hcd)
	152	return -ENOMEM;
	153
	154	platform_set_drvdata(dev, hcd);
	155	dev->dev.platform_data = pdata;
	156	priv = hcd_to_ohci_priv(hcd);
b1034412	157	ohci = hcd_to_ohci(hcd);
ca52a17b HG	158
ca52a17b HG	159	if (pdata == &ohci_platform_defaults && dev->dev.of_node) {
b1034412 HG	160	if (of_property_read_bool(dev->dev.of_node, "big-endian-regs"))
	161	ohci->flags \|= OHCI_QUIRK_BE_MMIO;
	162
	163	if (of_property_read_bool(dev->dev.of_node, "big-endian-desc"))
	164	ohci->flags \|= OHCI_QUIRK_BE_DESC;
	165
	166	if (of_property_read_bool(dev->dev.of_node, "big-endian"))
	167	ohci->flags \|= OHCI_QUIRK_BE_MMIO \| OHCI_QUIRK_BE_DESC;
	168
c4b8692a KC	169	if (of_property_read_bool(dev->dev.of_node, "no-big-frame-no"))
	170	ohci->flags \|= OHCI_QUIRK_FRAME_NO;
	171
	172	of_property_read_u32(dev->dev.of_node, "num-ports",
	173	&ohci->num_ports);
	174
85cd690d AR	175	priv->num_phys = of_count_phandle_with_args(dev->dev.of_node,
	176	"phys", "#phy-cells");
	177	priv->num_phys = priv->num_phys > 0 ? priv->num_phys : 1;
	178
	179	priv->phys = devm_kcalloc(&dev->dev, priv->num_phys,
	180	sizeof(struct phy *), GFP_KERNEL);
	181	if (!priv->phys)
	182	return -ENOMEM;
	183
	184	for (phy_num = 0; phy_num < priv->num_phys; phy_num++) {
	185	err = of_property_read_string_index(
	186	dev->dev.of_node,
	187	"phy-names", phy_num,
	188	&phy_name);
	189
	190	if (err < 0) {
	191	if (priv->num_phys > 1) {
	192	dev_err(&dev->dev, "phy-names not provided");
	193	goto err_put_hcd;
	194	} else
	195	phy_name = "usb";
	196	}
	197
	198	priv->phys[phy_num] = devm_phy_get(&dev->dev,
	199	phy_name);
	200	if (IS_ERR(priv->phys[phy_num])) {
	201	err = PTR_ERR(priv->phys[phy_num]);
	202	if ((priv->num_phys > 1) \|\|
	203	(err == -EPROBE_DEFER))
	204	goto err_put_hcd;
	205	priv->phys[phy_num] = NULL;
	206	}
ca52a17b HG	207	}
	208
	209	for (clk = 0; clk < OHCI_MAX_CLKS; clk++) {
	210	priv->clks[clk] = of_clk_get(dev->dev.of_node, clk);
	211	if (IS_ERR(priv->clks[clk])) {
	212	err = PTR_ERR(priv->clks[clk]);
	213	if (err == -EPROBE_DEFER)
	214	goto err_put_clks;
	215	priv->clks[clk] = NULL;
	216	break;
	217	}
	218	}
4615f3bd MR	219
	220	}
	221
	222	priv->rst = devm_reset_control_get_optional(&dev->dev, NULL);
	223	if (IS_ERR(priv->rst)) {
	224	err = PTR_ERR(priv->rst);
	225	if (err == -EPROBE_DEFER)
	226	goto err_put_clks;
	227	priv->rst = NULL;
	228	} else {
	229	err = reset_control_deassert(priv->rst);
	230	if (err)
	231	goto err_put_clks;
ca52a17b HG	232	}
ca52a17b HG	233
adff5295 AS	234	if (pdata->big_endian_desc)
	235	ohci->flags \|= OHCI_QUIRK_BE_DESC;
	236	if (pdata->big_endian_mmio)
	237	ohci->flags \|= OHCI_QUIRK_BE_MMIO;
46f21949 KC	238	if (pdata->no_big_frame_no)
	239	ohci->flags \|= OHCI_QUIRK_FRAME_NO;
	240	if (pdata->num_ports)
	241	ohci->num_ports = pdata->num_ports;
adff5295 AS	242
	243	#ifndef CONFIG_USB_OHCI_BIG_ENDIAN_MMIO
	244	if (ohci->flags & OHCI_QUIRK_BE_MMIO) {
	245	dev_err(&dev->dev,
	246	"Error: CONFIG_USB_OHCI_BIG_ENDIAN_MMIO not set\n");
	247	err = -EINVAL;
4615f3bd	248	goto err_reset;
adff5295 AS	249	}
	250	#endif
	251	#ifndef CONFIG_USB_OHCI_BIG_ENDIAN_DESC
	252	if (ohci->flags & OHCI_QUIRK_BE_DESC) {
	253	dev_err(&dev->dev,
	254	"Error: CONFIG_USB_OHCI_BIG_ENDIAN_DESC not set\n");
	255	err = -EINVAL;
4615f3bd	256	goto err_reset;
adff5295 AS	257	}
	258	#endif
	259
e4d37aeb KM	260	if (pdata->power_on) {
	261	err = pdata->power_on(dev);
	262	if (err < 0)
4615f3bd	263	goto err_reset;
e4d37aeb	264	}
fa3364b5	265
7b519291	266	res_mem = platform_get_resource(dev, IORESOURCE_MEM, 0);
148e1134 TR	267	hcd->regs = devm_ioremap_resource(&dev->dev, res_mem);
	268	if (IS_ERR(hcd->regs)) {
	269	err = PTR_ERR(hcd->regs);
ca52a17b	270	goto err_power;
aece389e	271	}
7b519291 VB	272	hcd->rsrc_start = res_mem->start;
	273	hcd->rsrc_len = resource_size(res_mem);
	274
fa3364b5 HM	275	err = usb_add_hcd(hcd, irq, IRQF_SHARED);
fa3364b5 HM	276	if (err)
ca52a17b	277	goto err_power;
fa3364b5	278
3c9740a1 PC	279	device_wakeup_enable(hcd->self.controller);
3c9740a1 PC	280
fa3364b5 HM	281	platform_set_drvdata(dev, hcd);
	282
	283	return err;
	284
e4d37aeb KM	285	err_power:
	286	if (pdata->power_off)
	287	pdata->power_off(dev);
4615f3bd MR	288	err_reset:
	289	if (priv->rst)
	290	reset_control_assert(priv->rst);
ca52a17b HG	291	err_put_clks:
	292	while (--clk >= 0)
	293	clk_put(priv->clks[clk]);
	294	err_put_hcd:
	295	if (pdata == &ohci_platform_defaults)
	296	dev->dev.platform_data = NULL;
	297
	298	usb_put_hcd(hcd);
e4d37aeb	299
fa3364b5 HM	300	return err;
	301	}
	302
fb4e98ab	303	static int ohci_platform_remove(struct platform_device *dev)
fa3364b5 HM	304	{
fa3364b5 HM	305	struct usb_hcd *hcd = platform_get_drvdata(dev);
d4f09e28	306	struct usb_ohci_pdata *pdata = dev_get_platdata(&dev->dev);
ca52a17b HG	307	struct ohci_platform_priv *priv = hcd_to_ohci_priv(hcd);
ca52a17b HG	308	int clk;
fa3364b5 HM	309
fa3364b5 HM	310	usb_remove_hcd(hcd);
fa3364b5	311
e4d37aeb KM	312	if (pdata->power_off)
	313	pdata->power_off(dev);
	314
4615f3bd MR	315	if (priv->rst)
	316	reset_control_assert(priv->rst);
	317
ca52a17b HG	318	for (clk = 0; clk < OHCI_MAX_CLKS && priv->clks[clk]; clk++)
	319	clk_put(priv->clks[clk]);
	320
	321	usb_put_hcd(hcd);
	322
	323	if (pdata == &ohci_platform_defaults)
	324	dev->dev.platform_data = NULL;
	325
fa3364b5 HM	326	return 0;
	327	}
	328
5e4ccd9e	329	#ifdef CONFIG_PM_SLEEP
fa3364b5 HM	330	static int ohci_platform_suspend(struct device *dev)
fa3364b5 HM	331	{
39dbd7df MG	332	struct usb_hcd *hcd = dev_get_drvdata(dev);
39dbd7df MG	333	struct usb_ohci_pdata *pdata = dev->platform_data;
e4d37aeb KM	334	struct platform_device *pdev =
e4d37aeb KM	335	container_of(dev, struct platform_device, dev);
39dbd7df MG	336	bool do_wakeup = device_may_wakeup(dev);
	337	int ret;
	338
	339	ret = ohci_suspend(hcd, do_wakeup);
	340	if (ret)
	341	return ret;
e4d37aeb KM	342
	343	if (pdata->power_suspend)
	344	pdata->power_suspend(pdev);
	345
39dbd7df	346	return ret;
fa3364b5 HM	347	}
	348
	349	static int ohci_platform_resume(struct device *dev)
	350	{
	351	struct usb_hcd *hcd = dev_get_drvdata(dev);
d4f09e28	352	struct usb_ohci_pdata *pdata = dev_get_platdata(dev);
e4d37aeb KM	353	struct platform_device *pdev =
	354	container_of(dev, struct platform_device, dev);
	355
	356	if (pdata->power_on) {
	357	int err = pdata->power_on(pdev);
	358	if (err < 0)
	359	return err;
	360	}
fa3364b5	361
cfa49b4b	362	ohci_resume(hcd, false);
fa3364b5 HM	363	return 0;
fa3364b5 HM	364	}
5e4ccd9e	365	#endif /* CONFIG_PM_SLEEP */
fa3364b5	366
ca52a17b	367	static const struct of_device_id ohci_platform_ids[] = {
ce149c30	368	{ .compatible = "generic-ohci", },
a95cfa6b	369	{ .compatible = "cavium,octeon-6335-ohci", },
ca52a17b HG	370	{ }
	371	};
	372	MODULE_DEVICE_TABLE(of, ohci_platform_ids);
	373
fa3364b5 HM	374	static const struct platform_device_id ohci_platform_table[] = {
	375	{ "ohci-platform", 0 },
	376	{ }
	377	};
	378	MODULE_DEVICE_TABLE(platform, ohci_platform_table);
	379
5e4ccd9e WK	380	static SIMPLE_DEV_PM_OPS(ohci_platform_pm_ops, ohci_platform_suspend,
5e4ccd9e WK	381	ohci_platform_resume);
fa3364b5 HM	382
	383	static struct platform_driver ohci_platform_driver = {
	384	.id_table = ohci_platform_table,
	385	.probe = ohci_platform_probe,
7690417d	386	.remove = ohci_platform_remove,
fa3364b5 HM	387	.shutdown = usb_hcd_platform_shutdown,
fa3364b5 HM	388	.driver = {
fa3364b5 HM	389	.name = "ohci-platform",
fa3364b5 HM	390	.pm = &ohci_platform_pm_ops,
ca52a17b	391	.of_match_table = ohci_platform_ids,
fa3364b5 HM	392	}
fa3364b5 HM	393	};
928fb68e MG	394
	395	static int __init ohci_platform_init(void)
	396	{
	397	if (usb_disabled())
	398	return -ENODEV;
	399
	400	pr_info("%s: " DRIVER_DESC "\n", hcd_name);
	401
	402	ohci_init_driver(&ohci_platform_hc_driver, &platform_overrides);
	403	return platform_driver_register(&ohci_platform_driver);
	404	}
	405	module_init(ohci_platform_init);
	406
	407	static void __exit ohci_platform_cleanup(void)
	408	{
	409	platform_driver_unregister(&ohci_platform_driver);
	410	}
	411	module_exit(ohci_platform_cleanup);
	412
	413	MODULE_DESCRIPTION(DRIVER_DESC);
	414	MODULE_AUTHOR("Hauke Mehrtens");
	415	MODULE_AUTHOR("Alan Stern");
	416	MODULE_LICENSE("GPL");