[deliverable/linux.git] / drivers / usb / host / ehci-w90x900.c

/*
 * linux/driver/usb/host/ehci-w90x900.c
 *
 * Copyright (c) 2008 Nuvoton technology corporation.
 *
 * Wan ZongShun <mcuos.com@gmail.com>
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation;version 2 of the License.
 *
 */

#include <linux/platform_device.h>

/*ebable phy0 and phy1 for w90p910*/
#define	ENPHY		(0x01<<8)
#define PHY0_CTR	(0xA4)
#define PHY1_CTR	(0xA8)

static int __devinit usb_w90x900_probe(const struct hc_driver *driver,
		      struct platform_device *pdev)
{
	struct usb_hcd *hcd;
	struct ehci_hcd *ehci;
	struct resource *res;
	int retval = 0, irq;
	unsigned long val;


	res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
	if (!res) {
		retval = -ENXIO;
		goto err1;
	}

	hcd = usb_create_hcd(driver, &pdev->dev, "w90x900 EHCI");
	if (!hcd) {
		retval = -ENOMEM;
		goto err1;
	}

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

	if (!request_mem_region(hcd->rsrc_start, hcd->rsrc_len, hcd_name)) {
		retval = -EBUSY;
		goto err2;
	}

	hcd->regs = ioremap(hcd->rsrc_start, hcd->rsrc_len);
	if (hcd->regs == NULL) {
		retval = -EFAULT;
		goto err3;
	}

	ehci = hcd_to_ehci(hcd);
	ehci->caps = hcd->regs;
	ehci->regs = hcd->regs +
		HC_LENGTH(ehci, ehci_readl(ehci, &ehci->caps->hc_capbase));

	/* enable PHY 0,1,the regs only apply to w90p910
	*  0xA4,0xA8 were offsets of PHY0 and PHY1 controller of
	*  w90p910 IC relative to ehci->regs.
	*/
	val = __raw_readl(ehci->regs+PHY0_CTR);
	val |= ENPHY;
	__raw_writel(val, ehci->regs+PHY0_CTR);

	val = __raw_readl(ehci->regs+PHY1_CTR);
	val |= ENPHY;
	__raw_writel(val, ehci->regs+PHY1_CTR);

	ehci->hcs_params = ehci_readl(ehci, &ehci->caps->hcs_params);
	ehci->sbrn = 0x20;

	irq = platform_get_irq(pdev, 0);
	if (irq < 0)
		goto err4;

	retval = usb_add_hcd(hcd, irq, IRQF_SHARED);
	if (retval != 0)
		goto err4;

	ehci_writel(ehci, 1, &ehci->regs->configured_flag);

	return retval;
err4:
	iounmap(hcd->regs);
err3:
	release_mem_region(hcd->rsrc_start, hcd->rsrc_len);
err2:
	usb_put_hcd(hcd);
err1:
	return retval;
}

static
void usb_w90x900_remove(struct usb_hcd *hcd, struct platform_device *pdev)
{
	usb_remove_hcd(hcd);
	iounmap(hcd->regs);
	release_mem_region(hcd->rsrc_start, hcd->rsrc_len);
	usb_put_hcd(hcd);
}

static const struct hc_driver ehci_w90x900_hc_driver = {
	.description = hcd_name,
	.product_desc = "Nuvoton w90x900 EHCI Host Controller",
	.hcd_priv_size = sizeof(struct ehci_hcd),

	/*
	 * generic hardware linkage
	 */
	.irq = ehci_irq,
	.flags = HCD_USB2|HCD_MEMORY,

	/*
	 * basic lifecycle operations
	 */
	.reset = ehci_init,
	.start = ehci_run,

	.stop = ehci_stop,
	.shutdown = ehci_shutdown,

	/*
	 * managing i/o requests and associated device resources
	 */
	.urb_enqueue = ehci_urb_enqueue,
	.urb_dequeue = ehci_urb_dequeue,
	.endpoint_disable = ehci_endpoint_disable,
	.endpoint_reset = ehci_endpoint_reset,

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

	/*
	 * root hub support
	 */
	.hub_status_data = ehci_hub_status_data,
	.hub_control = ehci_hub_control,
#ifdef	CONFIG_PM
	.bus_suspend = ehci_bus_suspend,
	.bus_resume = ehci_bus_resume,
#endif
	.relinquish_port	= ehci_relinquish_port,
	.port_handed_over	= ehci_port_handed_over,

	.clear_tt_buffer_complete = ehci_clear_tt_buffer_complete,
};

static int __devinit ehci_w90x900_probe(struct platform_device *pdev)
{
	if (usb_disabled())
		return -ENODEV;

	return usb_w90x900_probe(&ehci_w90x900_hc_driver, pdev);
}

static int __devexit ehci_w90x900_remove(struct platform_device *pdev)
{
	struct usb_hcd *hcd = platform_get_drvdata(pdev);

	usb_w90x900_remove(hcd, pdev);

	return 0;
}

static struct platform_driver ehci_hcd_w90x900_driver = {
	.probe  = ehci_w90x900_probe,
	.remove = __devexit_p(ehci_w90x900_remove),
	.driver = {
		.name = "w90x900-ehci",
		.owner = THIS_MODULE,
	},
};

MODULE_AUTHOR("Wan ZongShun <mcuos.com@gmail.com>");
MODULE_DESCRIPTION("w90p910 usb ehci driver!");
MODULE_LICENSE("GPL");
MODULE_ALIAS("platform:w90p910-ehci");
Commit	Line	Data
586dfc8c WZ	1	/*
	2	* linux/driver/usb/host/ehci-w90x900.c
	3	*
	4	* Copyright (c) 2008 Nuvoton technology corporation.
	5	*
	6	* Wan ZongShun <mcuos.com@gmail.com>
	7	*
	8	* This program is free software; you can redistribute it and/or modify
	9	* it under the terms of the GNU General Public License as published by
	10	* the Free Software Foundation;version 2 of the License.
	11	*
	12	*/
	13
	14	#include <linux/platform_device.h>
	15
	16	/ebable phy0 and phy1 for w90p910/
	17	#define ENPHY (0x01<<8)
	18	#define PHY0_CTR (0xA4)
	19	#define PHY1_CTR (0xA8)
	20
	21	static int __devinit usb_w90x900_probe(const struct hc_driver *driver,
	22	struct platform_device *pdev)
	23	{
	24	struct usb_hcd *hcd;
	25	struct ehci_hcd *ehci;
	26	struct resource *res;
	27	int retval = 0, irq;
	28	unsigned long val;
	29
	30
	31	res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
	32	if (!res) {
	33	retval = -ENXIO;
	34	goto err1;
	35	}
	36
	37	hcd = usb_create_hcd(driver, &pdev->dev, "w90x900 EHCI");
	38	if (!hcd) {
	39	retval = -ENOMEM;
	40	goto err1;
	41	}
	42
	43	hcd->rsrc_start = res->start;
28f65c11	44	hcd->rsrc_len = resource_size(res);
586dfc8c WZ	45
	46	if (!request_mem_region(hcd->rsrc_start, hcd->rsrc_len, hcd_name)) {
	47	retval = -EBUSY;
	48	goto err2;
	49	}
	50
	51	hcd->regs = ioremap(hcd->rsrc_start, hcd->rsrc_len);
	52	if (hcd->regs == NULL) {
	53	retval = -EFAULT;
	54	goto err3;
	55	}
	56
	57	ehci = hcd_to_ehci(hcd);
	58	ehci->caps = hcd->regs;
	59	ehci->regs = hcd->regs +
c430131a	60	HC_LENGTH(ehci, ehci_readl(ehci, &ehci->caps->hc_capbase));
586dfc8c WZ	61
	62	/* enable PHY 0,1,the regs only apply to w90p910
	63	* 0xA4,0xA8 were offsets of PHY0 and PHY1 controller of
	64	* w90p910 IC relative to ehci->regs.
	65	*/
	66	val = __raw_readl(ehci->regs+PHY0_CTR);
	67	val \|= ENPHY;
	68	__raw_writel(val, ehci->regs+PHY0_CTR);
	69
	70	val = __raw_readl(ehci->regs+PHY1_CTR);
	71	val \|= ENPHY;
	72	__raw_writel(val, ehci->regs+PHY1_CTR);
	73
	74	ehci->hcs_params = ehci_readl(ehci, &ehci->caps->hcs_params);
	75	ehci->sbrn = 0x20;
	76
	77	irq = platform_get_irq(pdev, 0);
	78	if (irq < 0)
	79	goto err4;
	80
	81	retval = usb_add_hcd(hcd, irq, IRQF_SHARED);
	82	if (retval != 0)
	83	goto err4;
	84
	85	ehci_writel(ehci, 1, &ehci->regs->configured_flag);
	86
	87	return retval;
	88	err4:
	89	iounmap(hcd->regs);
	90	err3:
	91	release_mem_region(hcd->rsrc_start, hcd->rsrc_len);
	92	err2:
	93	usb_put_hcd(hcd);
	94	err1:
	95	return retval;
	96	}
	97
	98	static
	99	void usb_w90x900_remove(struct usb_hcd hcd, struct platform_device pdev)
	100	{
	101	usb_remove_hcd(hcd);
	102	iounmap(hcd->regs);
	103	release_mem_region(hcd->rsrc_start, hcd->rsrc_len);
	104	usb_put_hcd(hcd);
	105	}
	106
	107	static const struct hc_driver ehci_w90x900_hc_driver = {
	108	.description = hcd_name,
	109	.product_desc = "Nuvoton w90x900 EHCI Host Controller",
	110	.hcd_priv_size = sizeof(struct ehci_hcd),
	111
	112	/*
	113	* generic hardware linkage
	114	*/
	115	.irq = ehci_irq,
	116	.flags = HCD_USB2\|HCD_MEMORY,
	117
	118	/*
	119	* basic lifecycle operations
	120	*/
	121	.reset = ehci_init,
	122	.start = ehci_run,
	123
	124	.stop = ehci_stop,
125	.shutdown = ehci_shutdown,
126
127	/*
128	* managing i/o requests and associated device resources
129	*/
130	.urb_enqueue = ehci_urb_enqueue,
131	.urb_dequeue = ehci_urb_dequeue,
132	.endpoint_disable = ehci_endpoint_disable,
b48d7f50	133	.endpoint_reset = ehci_endpoint_reset,
586dfc8c WZ	134
	135	/*
	136	* scheduling support
	137	*/
	138	.get_frame_number = ehci_get_frame,
	139
	140	/*
	141	* root hub support
	142	*/
	143	.hub_status_data = ehci_hub_status_data,
	144	.hub_control = ehci_hub_control,
	145	#ifdef CONFIG_PM
	146	.bus_suspend = ehci_bus_suspend,
	147	.bus_resume = ehci_bus_resume,
	148	#endif
	149	.relinquish_port = ehci_relinquish_port,
	150	.port_handed_over = ehci_port_handed_over,
b48d7f50 PM	151
b48d7f50 PM	152	.clear_tt_buffer_complete = ehci_clear_tt_buffer_complete,
586dfc8c WZ	153	};
	154
	155	static int __devinit ehci_w90x900_probe(struct platform_device *pdev)
	156	{
	157	if (usb_disabled())
	158	return -ENODEV;
	159
	160	return usb_w90x900_probe(&ehci_w90x900_hc_driver, pdev);
	161	}
	162
	163	static int __devexit ehci_w90x900_remove(struct platform_device *pdev)
	164	{
	165	struct usb_hcd *hcd = platform_get_drvdata(pdev);
	166
	167	usb_w90x900_remove(hcd, pdev);
	168
	169	return 0;
	170	}
	171
	172	static struct platform_driver ehci_hcd_w90x900_driver = {
	173	.probe = ehci_w90x900_probe,
	174	.remove = __devexit_p(ehci_w90x900_remove),
	175	.driver = {
	176	.name = "w90x900-ehci",
	177	.owner = THIS_MODULE,
	178	},
	179	};
	180
	181	MODULE_AUTHOR("Wan ZongShun <mcuos.com@gmail.com>");
	182	MODULE_DESCRIPTION("w90p910 usb ehci driver!");
	183	MODULE_LICENSE("GPL");
	184	MODULE_ALIAS("platform:w90p910-ehci");