[deliverable/linux.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.
 */

#include <linux/platform_device.h>
#include <linux/signal.h>

/* 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("%s: no irq\n", __FILE__);
		return -ENODEV;
	}
	irq = res->start;

	res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
	if (!res) {
		pr_debug("%s: no reg addr\n", __FILE__);
		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("%s: request_mem_region failed\n", __FILE__);
		retval = -EBUSY;
		goto err1;
	}

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

	ohci = hcd_to_ohci(hcd);
	ohci->flags |= OHCI_QUIRK_BE_MMIO | OHCI_QUIRK_BE_DESC;

#ifdef CONFIG_PPC_MPC52xx
	/* MPC52xx doesn't need frame_no shift */
	ohci->flags |= OHCI_QUIRK_FRAME_NO;
#endif
	ohci_hcd_init(ohci);

	retval = usb_add_hcd(hcd, irq, IRQF_DISABLED);
	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,
	.shutdown =		ohci_shutdown,

	/*
	 * 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 platform_device *pdev)
{
	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 platform_device *pdev)
{
	struct usb_hcd *hcd = platform_get_drvdata(pdev);

	usb_hcd_ppc_soc_remove(hcd, pdev);
	return 0;
}

static struct platform_driver ohci_hcd_ppc_soc_driver = {
	.probe		= ohci_hcd_ppc_soc_drv_probe,
	.remove		= ohci_hcd_ppc_soc_drv_remove,
	.shutdown	= usb_hcd_platform_shutdown,
#ifdef	CONFIG_PM
	/*.suspend	= ohci_hcd_ppc_soc_drv_suspend,*/
	/*.resume	= ohci_hcd_ppc_soc_drv_resume,*/
#endif
	.driver		= {
		.name	= "ppc-soc-ohci",
		.owner	= THIS_MODULE,
	},
};

MODULE_ALIAS("platform:ppc-soc-ohci");
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.
dd9048af	8	*
1da177e4 LT	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
d052d1be	17	#include <linux/platform_device.h>
de25968c	18	#include <linux/signal.h>
d052d1be	19
1da177e4 LT	20	/* configure so an HC device and id are always provided */
	21	/* always called with process context; sleeping is OK */
	22
	23	/**
	24	* usb_hcd_ppc_soc_probe - initialize On-Chip HCDs
	25	* Context: !in_interrupt()
	26	*
4fbd55f0	27	* Allocates basic resources for this USB host controller.
1da177e4 LT	28	*
	29	* Store this function in the HCD's struct pci_driver as probe().
	30	*/
	31	static int usb_hcd_ppc_soc_probe(const struct hc_driver *driver,
	32	struct platform_device *pdev)
	33	{
	34	int retval;
	35	struct usb_hcd *hcd;
	36	struct ohci_hcd *ohci;
	37	struct resource *res;
	38	int irq;
1da177e4 LT	39
	40	pr_debug("initializing PPC-SOC USB Controller\n");
	41
	42	res = platform_get_resource(pdev, IORESOURCE_IRQ, 0);
	43	if (!res) {
f45ba776	44	pr_debug("%s: no irq\n", __FILE__);
1da177e4 LT	45	return -ENODEV;
	46	}
	47	irq = res->start;
	48
	49	res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
	50	if (!res) {
f45ba776	51	pr_debug("%s: no reg addr\n", __FILE__);
1da177e4 LT	52	return -ENODEV;
	53	}
	54
	55	hcd = usb_create_hcd(driver, &pdev->dev, "PPC-SOC USB");
	56	if (!hcd)
	57	return -ENOMEM;
	58	hcd->rsrc_start = res->start;
	59	hcd->rsrc_len = res->end - res->start + 1;
	60
	61	if (!request_mem_region(hcd->rsrc_start, hcd->rsrc_len, hcd_name)) {
f45ba776	62	pr_debug("%s: request_mem_region failed\n", __FILE__);
1da177e4 LT	63	retval = -EBUSY;
	64	goto err1;
	65	}
	66
	67	hcd->regs = ioremap(hcd->rsrc_start, hcd->rsrc_len);
	68	if (!hcd->regs) {
f45ba776	69	pr_debug("%s: ioremap failed\n", __FILE__);
1da177e4 LT	70	retval = -ENOMEM;
	71	goto err2;
	72	}
	73
1da177e4	74	ohci = hcd_to_ohci(hcd);
11d1a4aa	75	ohci->flags \|= OHCI_QUIRK_BE_MMIO \| OHCI_QUIRK_BE_DESC;
4f45426c VB	76
	77	#ifdef CONFIG_PPC_MPC52xx
	78	/* MPC52xx doesn't need frame_no shift */
	79	ohci->flags \|= OHCI_QUIRK_FRAME_NO;
	80	#endif
1da177e4 LT	81	ohci_hcd_init(ohci);
1da177e4 LT	82
d54b5caa	83	retval = usb_add_hcd(hcd, irq, IRQF_DISABLED);
1da177e4 LT	84	if (retval == 0)
	85	return retval;
	86
	87	pr_debug("Removing PPC-SOC USB Controller\n");
4fbd55f0	88
1da177e4 LT	89	iounmap(hcd->regs);
	90	err2:
	91	release_mem_region(hcd->rsrc_start, hcd->rsrc_len);
	92	err1:
dd9048af	93	usb_put_hcd(hcd);
1da177e4 LT	94	return retval;
	95	}
	96
	97
	98	/* may be called without controller electrically present */
	99	/* may be called with controller, bus, and devices active */
	100
	101	/**
	102	* usb_hcd_ppc_soc_remove - shutdown processing for On-Chip HCDs
	103	* @pdev: USB Host Controller being removed
	104	* Context: !in_interrupt()
	105	*
4fbd55f0 DF	106	* Reverses the effect of usb_hcd_ppc_soc_probe().
4fbd55f0 DF	107	* It is always called from a thread
1da177e4 LT	108	* context, normally "rmmod", "apmd", or something similar.
	109	*
	110	*/
	111	static void usb_hcd_ppc_soc_remove(struct usb_hcd *hcd,
	112	struct platform_device *pdev)
	113	{
1da177e4 LT	114	usb_remove_hcd(hcd);
	115
	116	pr_debug("stopping PPC-SOC USB Controller\n");
1da177e4 LT	117
	118	iounmap(hcd->regs);
	119	release_mem_region(hcd->rsrc_start, hcd->rsrc_len);
e52b1d3a	120	usb_put_hcd(hcd);
1da177e4 LT	121	}
	122
	123	static int __devinit
	124	ohci_ppc_soc_start(struct usb_hcd *hcd)
	125	{
	126	struct ohci_hcd *ohci = hcd_to_ohci(hcd);
	127	int ret;
	128
	129	if ((ret = ohci_init(ohci)) < 0)
	130	return ret;
	131
	132	if ((ret = ohci_run(ohci)) < 0) {
	133	err("can't start %s", ohci_to_hcd(ohci)->self.bus_name);
	134	ohci_stop(hcd);
	135	return ret;
	136	}
	137
	138	return 0;
	139	}
	140
	141	static const struct hc_driver ohci_ppc_soc_hc_driver = {
	142	.description = hcd_name,
	143	.hcd_priv_size = sizeof(struct ohci_hcd),
	144
	145	/*
	146	* generic hardware linkage
	147	*/
	148	.irq = ohci_irq,
	149	.flags = HCD_USB11 \| HCD_MEMORY,
	150
	151	/*
	152	* basic lifecycle operations
	153	*/
	154	.start = ohci_ppc_soc_start,
	155	.stop = ohci_stop,
dd9048af	156	.shutdown = ohci_shutdown,
1da177e4 LT	157
	158	/*
	159	* managing i/o requests and associated device resources
	160	*/
	161	.urb_enqueue = ohci_urb_enqueue,
	162	.urb_dequeue = ohci_urb_dequeue,
	163	.endpoint_disable = ohci_endpoint_disable,
	164
	165	/*
	166	* scheduling support
	167	*/
	168	.get_frame_number = ohci_get_frame,
	169
	170	/*
	171	* root hub support
	172	*/
	173	.hub_status_data = ohci_hub_status_data,
	174	.hub_control = ohci_hub_control,
8ad7fe16	175	#ifdef CONFIG_PM
0c0382e3 AS	176	.bus_suspend = ohci_bus_suspend,
0c0382e3 AS	177	.bus_resume = ohci_bus_resume,
1da177e4 LT	178	#endif
	179	.start_port_reset = ohci_start_port_reset,
	180	};
	181
3ae5eaec	182	static int ohci_hcd_ppc_soc_drv_probe(struct platform_device *pdev)
1da177e4	183	{
1da177e4 LT	184	int ret;
	185
	186	if (usb_disabled())
	187	return -ENODEV;
	188
	189	ret = usb_hcd_ppc_soc_probe(&ohci_ppc_soc_hc_driver, pdev);
	190	return ret;
	191	}
	192
3ae5eaec	193	static int ohci_hcd_ppc_soc_drv_remove(struct platform_device *pdev)
1da177e4	194	{
2463ade2	195	struct usb_hcd *hcd = platform_get_drvdata(pdev);
1da177e4 LT	196
	197	usb_hcd_ppc_soc_remove(hcd, pdev);
	198	return 0;
	199	}
	200
3ae5eaec	201	static struct platform_driver ohci_hcd_ppc_soc_driver = {
1da177e4 LT	202	.probe = ohci_hcd_ppc_soc_drv_probe,
1da177e4 LT	203	.remove = ohci_hcd_ppc_soc_drv_remove,
dd9048af	204	.shutdown = usb_hcd_platform_shutdown,
8ad7fe16	205	#ifdef CONFIG_PM
1da177e4 LT	206	/.suspend = ohci_hcd_ppc_soc_drv_suspend,/
	207	/.resume = ohci_hcd_ppc_soc_drv_resume,/
	208	#endif
3ae5eaec RK	209	.driver = {
	210	.name = "ppc-soc-ohci",
	211	.owner = THIS_MODULE,
	212	},
1da177e4 LT	213	};
1da177e4 LT	214
f4fce61d	215	MODULE_ALIAS("platform:ppc-soc-ohci");