[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/err.h>
#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);

	if (pdata->num_ports)
		ohci->num_ports = pdata->num_ports;

	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 ohci_platform_probe(struct platform_device *dev)
{
	struct usb_hcd *hcd;
	struct resource *res_mem;
	struct usb_ohci_pdata *pdata = dev->dev.platform_data;
	int irq;
	int err = -ENOMEM;

	if (!pdata) {
		WARN_ON(1);
		return -ENODEV;
	}

	if (usb_disabled())
		return -ENODEV;

	irq = platform_get_irq(dev, 0);
	if (irq < 0) {
		dev_err(&dev->dev, "no irq provided");
		return irq;
	}

	res_mem = platform_get_resource(dev, IORESOURCE_MEM, 0);
	if (!res_mem) {
		dev_err(&dev->dev, "no memory resource provided");
		return -ENXIO;
	}

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

	hcd = usb_create_hcd(&ohci_platform_hc_driver, &dev->dev,
			dev_name(&dev->dev));
	if (!hcd) {
		err = -ENOMEM;
		goto err_power;
	}

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

	hcd->regs = devm_ioremap_resource(&dev->dev, res_mem);
	if (IS_ERR(hcd->regs)) {
		err = PTR_ERR(hcd->regs);
		goto err_put_hcd;
	}
	err = usb_add_hcd(hcd, irq, IRQF_SHARED);
	if (err)
		goto err_put_hcd;

	platform_set_drvdata(dev, hcd);

	return err;

err_put_hcd:
	usb_put_hcd(hcd);
err_power:
	if (pdata->power_off)
		pdata->power_off(dev);

	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->dev.platform_data;

	usb_remove_hcd(hcd);
	usb_put_hcd(hcd);
	platform_set_drvdata(dev, NULL);

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

	return 0;
}

#ifdef CONFIG_PM

static int ohci_platform_suspend(struct device *dev)
{
	struct usb_ohci_pdata *pdata = dev->platform_data;
	struct platform_device *pdev =
		container_of(dev, struct platform_device, dev);

	if (pdata->power_suspend)
		pdata->power_suspend(pdev);

	return 0;
}

static int ohci_platform_resume(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);

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

	ohci_resume(hcd, false);
	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		= 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	*/
148e1134	16	#include <linux/err.h>
fa3364b5 HM	17	#include <linux/platform_device.h>
	18	#include <linux/usb/ohci_pdriver.h>
	19
	20	static int ohci_platform_reset(struct usb_hcd *hcd)
	21	{
	22	struct platform_device *pdev = to_platform_device(hcd->self.controller);
	23	struct usb_ohci_pdata *pdata = pdev->dev.platform_data;
	24	struct ohci_hcd *ohci = hcd_to_ohci(hcd);
	25	int err;
	26
	27	if (pdata->big_endian_desc)
	28	ohci->flags \|= OHCI_QUIRK_BE_DESC;
	29	if (pdata->big_endian_mmio)
	30	ohci->flags \|= OHCI_QUIRK_BE_MMIO;
	31	if (pdata->no_big_frame_no)
	32	ohci->flags \|= OHCI_QUIRK_FRAME_NO;
	33
	34	ohci_hcd_init(ohci);
2b16e39e FF	35
	36	if (pdata->num_ports)
	37	ohci->num_ports = pdata->num_ports;
	38
fa3364b5 HM	39	err = ohci_init(ohci);
	40
	41	return err;
	42	}
	43
	44	static int ohci_platform_start(struct usb_hcd *hcd)
	45	{
	46	struct ohci_hcd *ohci = hcd_to_ohci(hcd);
	47	int err;
	48
	49	err = ohci_run(ohci);
	50	if (err < 0) {
	51	ohci_err(ohci, "can't start\n");
	52	ohci_stop(hcd);
	53	}
	54
	55	return err;
	56	}
	57
	58	static const struct hc_driver ohci_platform_hc_driver = {
	59	.description = hcd_name,
	60	.product_desc = "Generic Platform OHCI Controller",
	61	.hcd_priv_size = sizeof(struct ohci_hcd),
	62
	63	.irq = ohci_irq,
	64	.flags = HCD_MEMORY \| HCD_USB11,
	65
	66	.reset = ohci_platform_reset,
	67	.start = ohci_platform_start,
	68	.stop = ohci_stop,
	69	.shutdown = ohci_shutdown,
	70
	71	.urb_enqueue = ohci_urb_enqueue,
	72	.urb_dequeue = ohci_urb_dequeue,
	73	.endpoint_disable = ohci_endpoint_disable,
	74
	75	.get_frame_number = ohci_get_frame,
	76
	77	.hub_status_data = ohci_hub_status_data,
	78	.hub_control = ohci_hub_control,
	79	#ifdef CONFIG_PM
	80	.bus_suspend = ohci_bus_suspend,
	81	.bus_resume = ohci_bus_resume,
	82	#endif
	83
	84	.start_port_reset = ohci_start_port_reset,
	85	};
	86
41ac7b3a	87	static int ohci_platform_probe(struct platform_device *dev)
fa3364b5 HM	88	{
	89	struct usb_hcd *hcd;
	90	struct resource *res_mem;
b6dd245c	91	struct usb_ohci_pdata *pdata = dev->dev.platform_data;
fa3364b5 HM	92	int irq;
	93	int err = -ENOMEM;
	94
b6dd245c KM	95	if (!pdata) {
	96	WARN_ON(1);
	97	return -ENODEV;
	98	}
fa3364b5 HM	99
	100	if (usb_disabled())
	101	return -ENODEV;
	102
	103	irq = platform_get_irq(dev, 0);
	104	if (irq < 0) {
976baf6e	105	dev_err(&dev->dev, "no irq provided");
fa3364b5 HM	106	return irq;
	107	}
	108
	109	res_mem = platform_get_resource(dev, IORESOURCE_MEM, 0);
	110	if (!res_mem) {
ac0e3c04	111	dev_err(&dev->dev, "no memory resource provided");
fa3364b5 HM	112	return -ENXIO;
	113	}
	114
e4d37aeb KM	115	if (pdata->power_on) {
	116	err = pdata->power_on(dev);
	117	if (err < 0)
	118	return err;
	119	}
	120
fa3364b5 HM	121	hcd = usb_create_hcd(&ohci_platform_hc_driver, &dev->dev,
fa3364b5 HM	122	dev_name(&dev->dev));
e4d37aeb KM	123	if (!hcd) {
	124	err = -ENOMEM;
	125	goto err_power;
	126	}
fa3364b5 HM	127
	128	hcd->rsrc_start = res_mem->start;
	129	hcd->rsrc_len = resource_size(res_mem);
	130
148e1134 TR	131	hcd->regs = devm_ioremap_resource(&dev->dev, res_mem);
	132	if (IS_ERR(hcd->regs)) {
	133	err = PTR_ERR(hcd->regs);
be7ac70b	134	goto err_put_hcd;
aece389e	135	}
fa3364b5 HM	136	err = usb_add_hcd(hcd, irq, IRQF_SHARED);
fa3364b5 HM	137	if (err)
be7ac70b	138	goto err_put_hcd;
fa3364b5 HM	139
	140	platform_set_drvdata(dev, hcd);
	141
	142	return err;
	143
fa3364b5 HM	144	err_put_hcd:
fa3364b5 HM	145	usb_put_hcd(hcd);
e4d37aeb KM	146	err_power:
	147	if (pdata->power_off)
	148	pdata->power_off(dev);
	149
fa3364b5 HM	150	return err;
	151	}
	152
fb4e98ab	153	static int ohci_platform_remove(struct platform_device *dev)
fa3364b5 HM	154	{
fa3364b5 HM	155	struct usb_hcd *hcd = platform_get_drvdata(dev);
e4d37aeb	156	struct usb_ohci_pdata *pdata = dev->dev.platform_data;
fa3364b5 HM	157
fa3364b5 HM	158	usb_remove_hcd(hcd);
fa3364b5 HM	159	usb_put_hcd(hcd);
	160	platform_set_drvdata(dev, NULL);
	161
e4d37aeb KM	162	if (pdata->power_off)
	163	pdata->power_off(dev);
	164
fa3364b5 HM	165	return 0;
	166	}
	167
	168	#ifdef CONFIG_PM
	169
	170	static int ohci_platform_suspend(struct device *dev)
	171	{
e4d37aeb KM	172	struct usb_ohci_pdata *pdata = dev->platform_data;
	173	struct platform_device *pdev =
	174	container_of(dev, struct platform_device, dev);
	175
	176	if (pdata->power_suspend)
	177	pdata->power_suspend(pdev);
	178
fa3364b5 HM	179	return 0;
	180	}
	181
	182	static int ohci_platform_resume(struct device *dev)
	183	{
	184	struct usb_hcd *hcd = dev_get_drvdata(dev);
e4d37aeb KM	185	struct usb_ohci_pdata *pdata = dev->platform_data;
	186	struct platform_device *pdev =
	187	container_of(dev, struct platform_device, dev);
	188
	189	if (pdata->power_on) {
	190	int err = pdata->power_on(pdev);
	191	if (err < 0)
	192	return err;
	193	}
fa3364b5	194
cfa49b4b	195	ohci_resume(hcd, false);
fa3364b5 HM	196	return 0;
	197	}
	198
	199	#else /* !CONFIG_PM */
	200	#define ohci_platform_suspend NULL
	201	#define ohci_platform_resume NULL
	202	#endif /* CONFIG_PM */
	203
	204	static const struct platform_device_id ohci_platform_table[] = {
	205	{ "ohci-platform", 0 },
	206	{ }
	207	};
	208	MODULE_DEVICE_TABLE(platform, ohci_platform_table);
	209
	210	static const struct dev_pm_ops ohci_platform_pm_ops = {
	211	.suspend = ohci_platform_suspend,
	212	.resume = ohci_platform_resume,
	213	};
	214
	215	static struct platform_driver ohci_platform_driver = {
	216	.id_table = ohci_platform_table,
	217	.probe = ohci_platform_probe,
7690417d	218	.remove = ohci_platform_remove,
fa3364b5 HM	219	.shutdown = usb_hcd_platform_shutdown,
	220	.driver = {
	221	.owner = THIS_MODULE,
	222	.name = "ohci-platform",
	223	.pm = &ohci_platform_pm_ops,
	224	}
	225	};