[linux-block.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);

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