[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>
 *
 * 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/platform_device.h>
#include <linux/usb/ohci_pdriver.h>

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

	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;

	ohci_hcd_init(ohci);
	err = ohci_init(ohci);

	return err;
}

static int ohci_platform_start(struct usb_hcd *hcd)
{
	struct ohci_hcd *ohci = hcd_to_ohci(hcd);
	int err;

	err = ohci_run(ohci);
	if (err < 0) {
		ohci_err(ohci, "can't start\n");
		ohci_stop(hcd);
	}

	return err;
}

static const struct hc_driver ohci_platform_hc_driver = {
	.description		= hcd_name,
	.product_desc		= "Generic Platform OHCI Controller",
	.hcd_priv_size		= sizeof(struct ohci_hcd),

	.irq			= ohci_irq,
	.flags			= HCD_MEMORY | HCD_USB11,

	.reset			= ohci_platform_reset,
	.start			= ohci_platform_start,
	.stop			= ohci_stop,
	.shutdown		= ohci_shutdown,

	.urb_enqueue		= ohci_urb_enqueue,
	.urb_dequeue		= ohci_urb_dequeue,
	.endpoint_disable	= ohci_endpoint_disable,

	.get_frame_number	= ohci_get_frame,

	.hub_status_data	= ohci_hub_status_data,
	.hub_control		= ohci_hub_control,
#ifdef	CONFIG_PM
	.bus_suspend		= ohci_bus_suspend,
	.bus_resume		= ohci_bus_resume,
#endif

	.start_port_reset	= ohci_start_port_reset,
};

static int __devinit ohci_platform_probe(struct platform_device *dev)
{
	struct usb_hcd *hcd;
	struct resource *res_mem;
	int irq;
	int err = -ENOMEM;

	BUG_ON(!dev->dev.platform_data);

	if (usb_disabled())
		return -ENODEV;

	irq = platform_get_irq(dev, 0);
	if (irq < 0) {
		pr_err("no irq provided");
		return irq;
	}

	res_mem = platform_get_resource(dev, IORESOURCE_MEM, 0);
	if (!res_mem) {
		pr_err("no memory recourse provided");
		return -ENXIO;
	}

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

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

	if (!request_mem_region(hcd->rsrc_start, hcd->rsrc_len, hcd_name)) {
		pr_err("controller already in use");
		err = -EBUSY;
		goto err_put_hcd;
	}

	hcd->regs = ioremap_nocache(hcd->rsrc_start, hcd->rsrc_len);
	if (!hcd->regs)
		goto err_release_region;
	err = usb_add_hcd(hcd, irq, IRQF_SHARED);
	if (err)
		goto err_iounmap;

	platform_set_drvdata(dev, hcd);

	return err;

err_iounmap:
	iounmap(hcd->regs);
err_release_region:
	release_mem_region(hcd->rsrc_start, hcd->rsrc_len);
err_put_hcd:
	usb_put_hcd(hcd);
	return err;
}

static int __devexit ohci_platform_remove(struct platform_device *dev)
{
	struct usb_hcd *hcd = platform_get_drvdata(dev);

	usb_remove_hcd(hcd);
	iounmap(hcd->regs);
	release_mem_region(hcd->rsrc_start, hcd->rsrc_len);
	usb_put_hcd(hcd);
	platform_set_drvdata(dev, NULL);

	return 0;
}

#ifdef CONFIG_PM

static int ohci_platform_suspend(struct device *dev)
{
	return 0;
}

static int ohci_platform_resume(struct device *dev)
{
	struct usb_hcd *hcd = dev_get_drvdata(dev);

	ohci_finish_controller_resume(hcd);
	return 0;
}

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

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		= __devexit_p(ohci_platform_remove),
	.shutdown	= usb_hcd_platform_shutdown,
	.driver		= {
		.owner	= THIS_MODULE,
		.name	= "ohci-platform",
		.pm	= &ohci_platform_pm_ops,
	}
};
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>
	6	*
	7	* Derived from the OCHI-SSB driver
	8	* Derived from the OHCI-PCI driver
	9	* Copyright 1999 Roman Weissgaerber
	10	* Copyright 2000-2002 David Brownell
	11	* Copyright 1999 Linus Torvalds
	12	* Copyright 1999 Gregory P. Smith
	13	*
	14	* Licensed under the GNU/GPL. See COPYING for details.
	15	*/
	16	#include <linux/platform_device.h>
	17	#include <linux/usb/ohci_pdriver.h>
	18
	19	static int ohci_platform_reset(struct usb_hcd *hcd)
	20	{
	21	struct platform_device *pdev = to_platform_device(hcd->self.controller);
	22	struct usb_ohci_pdata *pdata = pdev->dev.platform_data;
	23	struct ohci_hcd *ohci = hcd_to_ohci(hcd);
	24	int err;
	25
	26	if (pdata->big_endian_desc)
	27	ohci->flags \|= OHCI_QUIRK_BE_DESC;
	28	if (pdata->big_endian_mmio)
	29	ohci->flags \|= OHCI_QUIRK_BE_MMIO;
	30	if (pdata->no_big_frame_no)
	31	ohci->flags \|= OHCI_QUIRK_FRAME_NO;
	32
	33	ohci_hcd_init(ohci);
	34	err = ohci_init(ohci);
	35
	36	return err;
	37	}
	38
	39	static int ohci_platform_start(struct usb_hcd *hcd)
	40	{
	41	struct ohci_hcd *ohci = hcd_to_ohci(hcd);
	42	int err;
	43
	44	err = ohci_run(ohci);
	45	if (err < 0) {
	46	ohci_err(ohci, "can't start\n");
	47	ohci_stop(hcd);
	48	}
	49
	50	return err;
	51	}
	52
	53	static const struct hc_driver ohci_platform_hc_driver = {
	54	.description = hcd_name,
	55	.product_desc = "Generic Platform OHCI Controller",
	56	.hcd_priv_size = sizeof(struct ohci_hcd),
	57
	58	.irq = ohci_irq,
	59	.flags = HCD_MEMORY \| HCD_USB11,
	60
	61	.reset = ohci_platform_reset,
	62	.start = ohci_platform_start,
	63	.stop = ohci_stop,
	64	.shutdown = ohci_shutdown,
65
66	.urb_enqueue = ohci_urb_enqueue,
67	.urb_dequeue = ohci_urb_dequeue,
68	.endpoint_disable = ohci_endpoint_disable,
69
70	.get_frame_number = ohci_get_frame,
71
72	.hub_status_data = ohci_hub_status_data,
73	.hub_control = ohci_hub_control,
74	#ifdef CONFIG_PM
75	.bus_suspend = ohci_bus_suspend,
76	.bus_resume = ohci_bus_resume,
77	#endif
78
79	.start_port_reset = ohci_start_port_reset,
80	};
81
82	static int __devinit ohci_platform_probe(struct platform_device *dev)
83	{
84	struct usb_hcd *hcd;
85	struct resource *res_mem;
86	int irq;
87	int err = -ENOMEM;
88
89	BUG_ON(!dev->dev.platform_data);
90
91	if (usb_disabled())
92	return -ENODEV;
93
94	irq = platform_get_irq(dev, 0);
95	if (irq < 0) {
1c1301dd	96	pr_err("no irq provided");
fa3364b5 HM	97	return irq;
	98	}
	99
	100	res_mem = platform_get_resource(dev, IORESOURCE_MEM, 0);
	101	if (!res_mem) {
1c1301dd	102	pr_err("no memory recourse provided");
fa3364b5 HM	103	return -ENXIO;
	104	}
	105
	106	hcd = usb_create_hcd(&ohci_platform_hc_driver, &dev->dev,
	107	dev_name(&dev->dev));
	108	if (!hcd)
	109	return -ENOMEM;
	110
	111	hcd->rsrc_start = res_mem->start;
	112	hcd->rsrc_len = resource_size(res_mem);
	113
	114	if (!request_mem_region(hcd->rsrc_start, hcd->rsrc_len, hcd_name)) {
	115	pr_err("controller already in use");
	116	err = -EBUSY;
	117	goto err_put_hcd;
	118	}
	119
	120	hcd->regs = ioremap_nocache(hcd->rsrc_start, hcd->rsrc_len);
	121	if (!hcd->regs)
	122	goto err_release_region;
	123	err = usb_add_hcd(hcd, irq, IRQF_SHARED);
	124	if (err)
	125	goto err_iounmap;
	126
	127	platform_set_drvdata(dev, hcd);
	128
	129	return err;
	130
	131	err_iounmap:
	132	iounmap(hcd->regs);
	133	err_release_region:
	134	release_mem_region(hcd->rsrc_start, hcd->rsrc_len);
	135	err_put_hcd:
	136	usb_put_hcd(hcd);
	137	return err;
	138	}
	139
	140	static int __devexit ohci_platform_remove(struct platform_device *dev)
	141	{
	142	struct usb_hcd *hcd = platform_get_drvdata(dev);
	143
	144	usb_remove_hcd(hcd);
	145	iounmap(hcd->regs);
	146	release_mem_region(hcd->rsrc_start, hcd->rsrc_len);
	147	usb_put_hcd(hcd);
	148	platform_set_drvdata(dev, NULL);
	149
	150	return 0;
	151	}
	152
	153	#ifdef CONFIG_PM
	154
	155	static int ohci_platform_suspend(struct device *dev)
	156	{
	157	return 0;
	158	}
	159
	160	static int ohci_platform_resume(struct device *dev)
	161	{
	162	struct usb_hcd *hcd = dev_get_drvdata(dev);
	163
	164	ohci_finish_controller_resume(hcd);
	165	return 0;
	166	}
167
168	#else /* !CONFIG_PM */
169	#define ohci_platform_suspend NULL
170	#define ohci_platform_resume NULL
171	#endif /* CONFIG_PM */
172
173	static const struct platform_device_id ohci_platform_table[] = {
174	{ "ohci-platform", 0 },
175	{ }
176	};
177	MODULE_DEVICE_TABLE(platform, ohci_platform_table);
178
179	static const struct dev_pm_ops ohci_platform_pm_ops = {
180	.suspend = ohci_platform_suspend,
181	.resume = ohci_platform_resume,
182	};
183
184	static struct platform_driver ohci_platform_driver = {
185	.id_table = ohci_platform_table,
186	.probe = ohci_platform_probe,
187	.remove = __devexit_p(ohci_platform_remove),
188	.shutdown = usb_hcd_platform_shutdown,
189	.driver = {
190	.owner = THIS_MODULE,
191	.name = "ohci-platform",
192	.pm = &ohci_platform_pm_ops,
193	}
194	};