[mirror_ubuntu-artful-kernel.git] / drivers / usb / host / ohci-ppc-soc.c

/*
 * OHCI HCD (Host Controller Driver) for USB.
 *
 * (C) Copyright 1999 Roman Weissgaerber <weissg@vienna.at>
 * (C) Copyright 2000-2002 David Brownell <dbrownell@users.sourceforge.net>
 * (C) Copyright 2002 Hewlett-Packard Company
 * (C) Copyright 2003-2005 MontaVista Software Inc.
 * 
 * Bus Glue for PPC On-Chip OHCI driver
 * Tested on Freescale MPC5200 and IBM STB04xxx
 *
 * Modified by Dale Farnsworth <dale@farnsworth.org> from ohci-sa1111.c
 *
 * This file is licenced under the GPL.
 */

/* configure so an HC device and id are always provided */
/* always called with process context; sleeping is OK */

/**
 * usb_hcd_ppc_soc_probe - initialize On-Chip HCDs
 * Context: !in_interrupt()
 *
 * Allocates basic resources for this USB host controller.
 *
 * Store this function in the HCD's struct pci_driver as probe().
 */
static int usb_hcd_ppc_soc_probe(const struct hc_driver *driver,
			  struct platform_device *pdev)
{
	int retval;
	struct usb_hcd *hcd;
	struct ohci_hcd	*ohci;
	struct resource *res;
	int irq;

	pr_debug("initializing PPC-SOC USB Controller\n");

	res = platform_get_resource(pdev, IORESOURCE_IRQ, 0);
	if (!res) {
		pr_debug(__FILE__ ": no irq\n");
		return -ENODEV;
	}
	irq = res->start;

	res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
	if (!res) {
		pr_debug(__FILE__ ": no reg addr\n");
		return -ENODEV;
	}

	hcd = usb_create_hcd(driver, &pdev->dev, "PPC-SOC USB");
	if (!hcd)
		return -ENOMEM;
	hcd->rsrc_start = res->start;
	hcd->rsrc_len = res->end - res->start + 1;

	if (!request_mem_region(hcd->rsrc_start, hcd->rsrc_len, hcd_name)) {
		pr_debug(__FILE__ ": request_mem_region failed\n");
		retval = -EBUSY;
		goto err1;
	}

	hcd->regs = ioremap(hcd->rsrc_start, hcd->rsrc_len);
	if (!hcd->regs) {
		pr_debug(__FILE__ ": ioremap failed\n");
		retval = -ENOMEM;
		goto err2;
	}

	ohci = hcd_to_ohci(hcd);
	ohci->flags |= OHCI_BIG_ENDIAN;
	ohci_hcd_init(ohci);

	retval = usb_add_hcd(hcd, irq, SA_INTERRUPT);
	if (retval == 0)
		return retval;

	pr_debug("Removing PPC-SOC USB Controller\n");

	iounmap(hcd->regs);
 err2:
	release_mem_region(hcd->rsrc_start, hcd->rsrc_len);
 err1:
 	usb_put_hcd(hcd);
	return retval;
}


/* may be called without controller electrically present */
/* may be called with controller, bus, and devices active */

/**
 * usb_hcd_ppc_soc_remove - shutdown processing for On-Chip HCDs
 * @pdev: USB Host Controller being removed
 * Context: !in_interrupt()
 *
 * Reverses the effect of usb_hcd_ppc_soc_probe().
 * It is always called from a thread
 * context, normally "rmmod", "apmd", or something similar.
 *
 */
static void usb_hcd_ppc_soc_remove(struct usb_hcd *hcd,
		struct platform_device *pdev)
{
	usb_remove_hcd(hcd);

	pr_debug("stopping PPC-SOC USB Controller\n");

	iounmap(hcd->regs);
	release_mem_region(hcd->rsrc_start, hcd->rsrc_len);
	usb_put_hcd(hcd);
}

static int __devinit
ohci_ppc_soc_start(struct usb_hcd *hcd)
{
	struct ohci_hcd	*ohci = hcd_to_ohci(hcd);
	int		ret;

	if ((ret = ohci_init(ohci)) < 0)
		return ret;

	if ((ret = ohci_run(ohci)) < 0) {
		err("can't start %s", ohci_to_hcd(ohci)->self.bus_name);
		ohci_stop(hcd);
		return ret;
	}

	return 0;
}

static const struct hc_driver ohci_ppc_soc_hc_driver = {
	.description =		hcd_name,
	.hcd_priv_size =	sizeof(struct ohci_hcd),

	/*
	 * generic hardware linkage
	 */
	.irq =			ohci_irq,
	.flags =		HCD_USB11 | HCD_MEMORY,

	/*
	 * basic lifecycle operations
	 */
	.start =		ohci_ppc_soc_start,
	.stop =			ohci_stop,

	/*
	 * managing i/o requests and associated device resources
	 */
	.urb_enqueue =		ohci_urb_enqueue,
	.urb_dequeue =		ohci_urb_dequeue,
	.endpoint_disable =	ohci_endpoint_disable,

	/*
	 * scheduling support
	 */
	.get_frame_number =	ohci_get_frame,

	/*
	 * root hub support
	 */
	.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_hcd_ppc_soc_drv_probe(struct device *dev)
{
	struct platform_device *pdev = to_platform_device(dev);
	int ret;

	if (usb_disabled())
		return -ENODEV;

	ret = usb_hcd_ppc_soc_probe(&ohci_ppc_soc_hc_driver, pdev);
	return ret;
}

static int ohci_hcd_ppc_soc_drv_remove(struct device *dev)
{
	struct platform_device *pdev = to_platform_device(dev);
	struct usb_hcd *hcd = dev_get_drvdata(dev);

	usb_hcd_ppc_soc_remove(hcd, pdev);
	return 0;
}

static struct device_driver ohci_hcd_ppc_soc_driver = {
	.name		= "ppc-soc-ohci",
	.owner		= THIS_MODULE,
	.bus		= &platform_bus_type,
	.probe		= ohci_hcd_ppc_soc_drv_probe,
	.remove		= ohci_hcd_ppc_soc_drv_remove,
#ifdef	CONFIG_PM
	/*.suspend	= ohci_hcd_ppc_soc_drv_suspend,*/
	/*.resume	= ohci_hcd_ppc_soc_drv_resume,*/
#endif
};

static int __init ohci_hcd_ppc_soc_init(void)
{
	pr_debug(DRIVER_INFO " (PPC SOC)\n");
	pr_debug("block sizes: ed %d td %d\n", sizeof(struct ed),
							sizeof(struct td));

	return driver_register(&ohci_hcd_ppc_soc_driver);
}

static void __exit ohci_hcd_ppc_soc_cleanup(void)
{
	driver_unregister(&ohci_hcd_ppc_soc_driver);
}

module_init(ohci_hcd_ppc_soc_init);
module_exit(ohci_hcd_ppc_soc_cleanup);
Commit	Line	Data
1da177e4 LT	1	/*
	2	* OHCI HCD (Host Controller Driver) for USB.
	3	*
	4	* (C) Copyright 1999 Roman Weissgaerber <weissg@vienna.at>
	5	* (C) Copyright 2000-2002 David Brownell <dbrownell@users.sourceforge.net>
	6	* (C) Copyright 2002 Hewlett-Packard Company
	7	* (C) Copyright 2003-2005 MontaVista Software Inc.
	8	*
	9	* Bus Glue for PPC On-Chip OHCI driver
	10	* Tested on Freescale MPC5200 and IBM STB04xxx
	11	*
	12	* Modified by Dale Farnsworth <dale@farnsworth.org> from ohci-sa1111.c
	13	*
	14	* This file is licenced under the GPL.
	15	*/
	16
1da177e4 LT	17	/* configure so an HC device and id are always provided */
	18	/* always called with process context; sleeping is OK */
	19
	20	/**
	21	* usb_hcd_ppc_soc_probe - initialize On-Chip HCDs
	22	* Context: !in_interrupt()
	23	*
4fbd55f0	24	* Allocates basic resources for this USB host controller.
1da177e4 LT	25	*
	26	* Store this function in the HCD's struct pci_driver as probe().
	27	*/
	28	static int usb_hcd_ppc_soc_probe(const struct hc_driver *driver,
	29	struct platform_device *pdev)
	30	{
	31	int retval;
	32	struct usb_hcd *hcd;
	33	struct ohci_hcd *ohci;
	34	struct resource *res;
	35	int irq;
1da177e4 LT	36
	37	pr_debug("initializing PPC-SOC USB Controller\n");
	38
	39	res = platform_get_resource(pdev, IORESOURCE_IRQ, 0);
	40	if (!res) {
	41	pr_debug(__FILE__ ": no irq\n");
	42	return -ENODEV;
	43	}
	44	irq = res->start;
	45
	46	res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
	47	if (!res) {
	48	pr_debug(__FILE__ ": no reg addr\n");
	49	return -ENODEV;
	50	}
	51
	52	hcd = usb_create_hcd(driver, &pdev->dev, "PPC-SOC USB");
	53	if (!hcd)
	54	return -ENOMEM;
	55	hcd->rsrc_start = res->start;
	56	hcd->rsrc_len = res->end - res->start + 1;
	57
	58	if (!request_mem_region(hcd->rsrc_start, hcd->rsrc_len, hcd_name)) {
	59	pr_debug(__FILE__ ": request_mem_region failed\n");
	60	retval = -EBUSY;
	61	goto err1;
	62	}
	63
	64	hcd->regs = ioremap(hcd->rsrc_start, hcd->rsrc_len);
	65	if (!hcd->regs) {
	66	pr_debug(__FILE__ ": ioremap failed\n");
	67	retval = -ENOMEM;
	68	goto err2;
	69	}
	70
1da177e4 LT	71	ohci = hcd_to_ohci(hcd);
	72	ohci->flags \|= OHCI_BIG_ENDIAN;
	73	ohci_hcd_init(ohci);
	74
	75	retval = usb_add_hcd(hcd, irq, SA_INTERRUPT);
	76	if (retval == 0)
	77	return retval;
	78
	79	pr_debug("Removing PPC-SOC USB Controller\n");
4fbd55f0	80
1da177e4 LT	81	iounmap(hcd->regs);
	82	err2:
	83	release_mem_region(hcd->rsrc_start, hcd->rsrc_len);
	84	err1:
	85	usb_put_hcd(hcd);
	86	return retval;
	87	}
	88
	89
	90	/* may be called without controller electrically present */
	91	/* may be called with controller, bus, and devices active */
	92
	93	/**
	94	* usb_hcd_ppc_soc_remove - shutdown processing for On-Chip HCDs
	95	* @pdev: USB Host Controller being removed
	96	* Context: !in_interrupt()
	97	*
4fbd55f0 DF	98	* Reverses the effect of usb_hcd_ppc_soc_probe().
4fbd55f0 DF	99	* It is always called from a thread
1da177e4 LT	100	* context, normally "rmmod", "apmd", or something similar.
	101	*
	102	*/
	103	static void usb_hcd_ppc_soc_remove(struct usb_hcd *hcd,
	104	struct platform_device *pdev)
	105	{
1da177e4 LT	106	usb_remove_hcd(hcd);
	107
	108	pr_debug("stopping PPC-SOC USB Controller\n");
1da177e4 LT	109
	110	iounmap(hcd->regs);
	111	release_mem_region(hcd->rsrc_start, hcd->rsrc_len);
e52b1d3a	112	usb_put_hcd(hcd);
1da177e4 LT	113	}
	114
	115	static int __devinit
	116	ohci_ppc_soc_start(struct usb_hcd *hcd)
	117	{
	118	struct ohci_hcd *ohci = hcd_to_ohci(hcd);
	119	int ret;
	120
	121	if ((ret = ohci_init(ohci)) < 0)
	122	return ret;
	123
	124	if ((ret = ohci_run(ohci)) < 0) {
	125	err("can't start %s", ohci_to_hcd(ohci)->self.bus_name);
	126	ohci_stop(hcd);
	127	return ret;
	128	}
	129
	130	return 0;
	131	}
	132
	133	static const struct hc_driver ohci_ppc_soc_hc_driver = {
	134	.description = hcd_name,
	135	.hcd_priv_size = sizeof(struct ohci_hcd),
	136
	137	/*
	138	* generic hardware linkage
	139	*/
	140	.irq = ohci_irq,
	141	.flags = HCD_USB11 \| HCD_MEMORY,
	142
	143	/*
	144	* basic lifecycle operations
	145	*/
	146	.start = ohci_ppc_soc_start,
	147	.stop = ohci_stop,
	148
	149	/*
	150	* managing i/o requests and associated device resources
	151	*/
	152	.urb_enqueue = ohci_urb_enqueue,
	153	.urb_dequeue = ohci_urb_dequeue,
	154	.endpoint_disable = ohci_endpoint_disable,
	155
	156	/*
	157	* scheduling support
	158	*/
	159	.get_frame_number = ohci_get_frame,
	160
	161	/*
	162	* root hub support
	163	*/
	164	.hub_status_data = ohci_hub_status_data,
	165	.hub_control = ohci_hub_control,
8ad7fe16	166	#ifdef CONFIG_PM
0c0382e3 AS	167	.bus_suspend = ohci_bus_suspend,
0c0382e3 AS	168	.bus_resume = ohci_bus_resume,
1da177e4 LT	169	#endif
	170	.start_port_reset = ohci_start_port_reset,
	171	};
	172
	173	static int ohci_hcd_ppc_soc_drv_probe(struct device *dev)
	174	{
	175	struct platform_device *pdev = to_platform_device(dev);
	176	int ret;
	177
	178	if (usb_disabled())
	179	return -ENODEV;
	180
	181	ret = usb_hcd_ppc_soc_probe(&ohci_ppc_soc_hc_driver, pdev);
	182	return ret;
	183	}
	184
	185	static int ohci_hcd_ppc_soc_drv_remove(struct device *dev)
	186	{
	187	struct platform_device *pdev = to_platform_device(dev);
	188	struct usb_hcd *hcd = dev_get_drvdata(dev);
	189
	190	usb_hcd_ppc_soc_remove(hcd, pdev);
	191	return 0;
	192	}
	193
	194	static struct device_driver ohci_hcd_ppc_soc_driver = {
	195	.name = "ppc-soc-ohci",
efa400db	196	.owner = THIS_MODULE,
1da177e4 LT	197	.bus = &platform_bus_type,
	198	.probe = ohci_hcd_ppc_soc_drv_probe,
	199	.remove = ohci_hcd_ppc_soc_drv_remove,
8ad7fe16	200	#ifdef CONFIG_PM
1da177e4 LT	201	/.suspend = ohci_hcd_ppc_soc_drv_suspend,/
	202	/.resume = ohci_hcd_ppc_soc_drv_resume,/
	203	#endif
	204	};
	205
	206	static int __init ohci_hcd_ppc_soc_init(void)
	207	{
	208	pr_debug(DRIVER_INFO " (PPC SOC)\n");
	209	pr_debug("block sizes: ed %d td %d\n", sizeof(struct ed),
	210	sizeof(struct td));
	211
	212	return driver_register(&ohci_hcd_ppc_soc_driver);
	213	}
	214
	215	static void __exit ohci_hcd_ppc_soc_cleanup(void)
	216	{
	217	driver_unregister(&ohci_hcd_ppc_soc_driver);
	218	}
	219
	220	module_init(ohci_hcd_ppc_soc_init);
	221	module_exit(ohci_hcd_ppc_soc_cleanup);