[GitHub/mt8127/android_kernel_alcatel_ttab.git] / drivers / usb / host / ohci-lh7a404.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
 *
 * Bus Glue for Sharp LH7A404
 *
 * Written by Christopher Hoover <ch@hpl.hp.com>
 * Based on fragments of previous driver by Rusell King et al.
 *
 * Modified for LH7A404 from ohci-sa1111.c
 *  by Durgesh Pattamatta <pattamattad@sharpsec.com>
 *
 * This file is licenced under the GPL.
 */

#include <linux/platform_device.h>

#include <asm/hardware.h>


extern int usb_disabled(void);

/*-------------------------------------------------------------------------*/

static void lh7a404_start_hc(struct platform_device *dev)
{
	printk(KERN_DEBUG __FILE__
	       ": starting LH7A404 OHCI USB Controller\n");

	/*
	 * Now, carefully enable the USB clock, and take
	 * the USB host controller out of reset.
	 */
	CSC_PWRCNT |= CSC_PWRCNT_USBH_EN; /* Enable clock */
	udelay(1000);
	USBH_CMDSTATUS = OHCI_HCR;
	
	printk(KERN_DEBUG __FILE__
		   ": Clock to USB host has been enabled \n");
}

static void lh7a404_stop_hc(struct platform_device *dev)
{
	printk(KERN_DEBUG __FILE__
	       ": stopping LH7A404 OHCI USB Controller\n");

	CSC_PWRCNT &= ~CSC_PWRCNT_USBH_EN; /* Disable clock */
}


/*-------------------------------------------------------------------------*/

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


/**
 * usb_hcd_lh7a404_probe - initialize LH7A404-based HCDs
 * Context: !in_interrupt()
 *
 * Allocates basic resources for this USB host controller, and
 * then invokes the start() method for the HCD associated with it
 * through the hotplug entry's driver_data.
 *
 */
int usb_hcd_lh7a404_probe (const struct hc_driver *driver,
			  struct platform_device *dev)
{
	int retval;
	struct usb_hcd *hcd;

	if (dev->resource[1].flags != IORESOURCE_IRQ) {
		pr_debug("resource[1] is not IORESOURCE_IRQ");
		return -ENOMEM;
	}

	hcd = usb_create_hcd(driver, &dev->dev, "lh7a404");
	if (!hcd)
		return -ENOMEM;
	hcd->rsrc_start = dev->resource[0].start;
	hcd->rsrc_len = dev->resource[0].end - dev->resource[0].start + 1;

	if (!request_mem_region(hcd->rsrc_start, hcd->rsrc_len, hcd_name)) {
		pr_debug("request_mem_region failed");
		retval = -EBUSY;
		goto err1;
	}
	
	hcd->regs = ioremap(hcd->rsrc_start, hcd->rsrc_len);
	if (!hcd->regs) {
		pr_debug("ioremap failed");
		retval = -ENOMEM;
		goto err2;
	}

	lh7a404_start_hc(dev);
	ohci_hcd_init(hcd_to_ohci(hcd));

	retval = usb_add_hcd(hcd, dev->resource[1].start, SA_INTERRUPT);
	if (retval == 0)
		return retval;

	lh7a404_stop_hc(dev);
	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_lh7a404_remove - shutdown processing for LH7A404-based HCDs
 * @dev: USB Host Controller being removed
 * Context: !in_interrupt()
 *
 * Reverses the effect of usb_hcd_lh7a404_probe(), first invoking
 * the HCD's stop() method.  It is always called from a thread
 * context, normally "rmmod", "apmd", or something similar.
 *
 */
void usb_hcd_lh7a404_remove (struct usb_hcd *hcd, struct platform_device *dev)
{
	usb_remove_hcd(hcd);
	lh7a404_stop_hc(dev);
	iounmap(hcd->regs);
	release_mem_region(hcd->rsrc_start, hcd->rsrc_len);
	usb_put_hcd(hcd);
}

/*-------------------------------------------------------------------------*/

static int __devinit
ohci_lh7a404_start (struct usb_hcd *hcd)
{
	struct ohci_hcd	*ohci = hcd_to_ohci (hcd);
	int		ret;

	ohci_dbg (ohci, "ohci_lh7a404_start, ohci:%p", ohci);
	if ((ret = ohci_init(ohci)) < 0)
		return ret;

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

/*-------------------------------------------------------------------------*/

static const struct hc_driver ohci_lh7a404_hc_driver = {
	.description =		hcd_name,
	.product_desc =		"LH7A404 OHCI",
	.hcd_priv_size =	sizeof(struct ohci_hcd),

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

	/*
	 * basic lifecycle operations
	 */
	.start =		ohci_lh7a404_start,
#ifdef	CONFIG_PM
	/* suspend:		ohci_lh7a404_suspend,  -- tbd */
	/* resume:		ohci_lh7a404_resume,   -- tbd */
#endif /*CONFIG_PM*/
	.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_lh7a404_drv_probe(struct platform_device *pdev)
{
	int ret;

	pr_debug ("In ohci_hcd_lh7a404_drv_probe");

	if (usb_disabled())
		return -ENODEV;

	ret = usb_hcd_lh7a404_probe(&ohci_lh7a404_hc_driver, pdev);
	return ret;
}

static int ohci_hcd_lh7a404_drv_remove(struct platform_device *pdev)
{
	struct usb_hcd *hcd = platform_get_drvdata(pdev);

	usb_hcd_lh7a404_remove(hcd, pdev);
	return 0;
}
	/*TBD*/
/*static int ohci_hcd_lh7a404_drv_suspend(struct platform_device *dev)
{
	struct usb_hcd *hcd = platform_get_drvdata(dev);

	return 0;
}
static int ohci_hcd_lh7a404_drv_resume(struct platform_device *dev)
{
	struct usb_hcd *hcd = platform_get_drvdata(dev);


	return 0;
}
*/

static struct platform_driver ohci_hcd_lh7a404_driver = {
	.probe		= ohci_hcd_lh7a404_drv_probe,
	.remove		= ohci_hcd_lh7a404_drv_remove,
	/*.suspend	= ohci_hcd_lh7a404_drv_suspend, */
	/*.resume	= ohci_hcd_lh7a404_drv_resume, */
	.driver		= {
		.name	= "lh7a404-ohci",
		.owner	= THIS_MODULE,
	},
};

static int __init ohci_hcd_lh7a404_init (void)
{
	pr_debug (DRIVER_INFO " (LH7A404)");
	pr_debug ("block sizes: ed %d td %d\n",
		sizeof (struct ed), sizeof (struct td));

	return platform_driver_register(&ohci_hcd_lh7a404_driver);
}

static void __exit ohci_hcd_lh7a404_cleanup (void)
{
	platform_driver_unregister(&ohci_hcd_lh7a404_driver);
}

module_init (ohci_hcd_lh7a404_init);
module_exit (ohci_hcd_lh7a404_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	*
	8	* Bus Glue for Sharp LH7A404
	9	*
	10	* Written by Christopher Hoover <ch@hpl.hp.com>
	11	* Based on fragments of previous driver by Rusell King et al.
	12	*
	13	* Modified for LH7A404 from ohci-sa1111.c
	14	* by Durgesh Pattamatta <pattamattad@sharpsec.com>
	15	*
	16	* This file is licenced under the GPL.
	17	*/
	18
d052d1be RK	19	#include <linux/platform_device.h>
d052d1be RK	20
1da177e4	21	#include <asm/hardware.h>
1da177e4 LT	22
	23
	24	extern int usb_disabled(void);
	25
	26	/-------------------------------------------------------------------------/
	27
	28	static void lh7a404_start_hc(struct platform_device *dev)
	29	{
	30	printk(KERN_DEBUG __FILE__
	31	": starting LH7A404 OHCI USB Controller\n");
	32
	33	/*
	34	* Now, carefully enable the USB clock, and take
	35	* the USB host controller out of reset.
	36	*/
	37	CSC_PWRCNT \|= CSC_PWRCNT_USBH_EN; /* Enable clock */
	38	udelay(1000);
	39	USBH_CMDSTATUS = OHCI_HCR;
	40
	41	printk(KERN_DEBUG __FILE__
	42	": Clock to USB host has been enabled \n");
	43	}
	44
	45	static void lh7a404_stop_hc(struct platform_device *dev)
	46	{
	47	printk(KERN_DEBUG __FILE__
	48	": stopping LH7A404 OHCI USB Controller\n");
	49
	50	CSC_PWRCNT &= ~CSC_PWRCNT_USBH_EN; /* Disable clock */
	51	}
	52
	53
	54	/-------------------------------------------------------------------------/
	55
	56	/* configure so an HC device and id are always provided */
	57	/* always called with process context; sleeping is OK */
	58
	59
	60	/**
	61	* usb_hcd_lh7a404_probe - initialize LH7A404-based HCDs
	62	* Context: !in_interrupt()
	63	*
	64	* Allocates basic resources for this USB host controller, and
	65	* then invokes the start() method for the HCD associated with it
	66	* through the hotplug entry's driver_data.
	67	*
	68	*/
	69	int usb_hcd_lh7a404_probe (const struct hc_driver *driver,
	70	struct platform_device *dev)
	71	{
	72	int retval;
	73	struct usb_hcd *hcd;
	74
	75	if (dev->resource[1].flags != IORESOURCE_IRQ) {
	76	pr_debug("resource[1] is not IORESOURCE_IRQ");
	77	return -ENOMEM;
	78	}
	79
	80	hcd = usb_create_hcd(driver, &dev->dev, "lh7a404");
	81	if (!hcd)
	82	return -ENOMEM;
	83	hcd->rsrc_start = dev->resource[0].start;
	84	hcd->rsrc_len = dev->resource[0].end - dev->resource[0].start + 1;
	85
86	if (!request_mem_region(hcd->rsrc_start, hcd->rsrc_len, hcd_name)) {
87	pr_debug("request_mem_region failed");
88	retval = -EBUSY;
89	goto err1;
90	}
91
92	hcd->regs = ioremap(hcd->rsrc_start, hcd->rsrc_len);
93	if (!hcd->regs) {
94	pr_debug("ioremap failed");
95	retval = -ENOMEM;
96	goto err2;
97	}
98
99	lh7a404_start_hc(dev);
100	ohci_hcd_init(hcd_to_ohci(hcd));
101
102	retval = usb_add_hcd(hcd, dev->resource[1].start, SA_INTERRUPT);
103	if (retval == 0)
104	return retval;
105
106	lh7a404_stop_hc(dev);
107	iounmap(hcd->regs);
108	err2:
109	release_mem_region(hcd->rsrc_start, hcd->rsrc_len);
110	err1:
111	usb_put_hcd(hcd);
112	return retval;
113	}
114
115
116	/* may be called without controller electrically present */
117	/* may be called with controller, bus, and devices active */
118
119	/**
120	* usb_hcd_lh7a404_remove - shutdown processing for LH7A404-based HCDs
121	* @dev: USB Host Controller being removed
122	* Context: !in_interrupt()
123	*
124	* Reverses the effect of usb_hcd_lh7a404_probe(), first invoking
125	* the HCD's stop() method. It is always called from a thread
126	* context, normally "rmmod", "apmd", or something similar.
127	*
128	*/
129	void usb_hcd_lh7a404_remove (struct usb_hcd hcd, struct platform_device dev)
130	{
131	usb_remove_hcd(hcd);
132	lh7a404_stop_hc(dev);
133	iounmap(hcd->regs);
134	release_mem_region(hcd->rsrc_start, hcd->rsrc_len);
135	usb_put_hcd(hcd);
136	}
137
138	/-------------------------------------------------------------------------/
139
140	static int __devinit
141	ohci_lh7a404_start (struct usb_hcd *hcd)
142	{
143	struct ohci_hcd *ohci = hcd_to_ohci (hcd);
144	int ret;
145
146	ohci_dbg (ohci, "ohci_lh7a404_start, ohci:%p", ohci);
147	if ((ret = ohci_init(ohci)) < 0)
148	return ret;
149
150	if ((ret = ohci_run (ohci)) < 0) {
151	err ("can't start %s", hcd->self.bus_name);
152	ohci_stop (hcd);
153	return ret;
154	}
155	return 0;
156	}
157
158	/-------------------------------------------------------------------------/
159
160	static const struct hc_driver ohci_lh7a404_hc_driver = {
161	.description = hcd_name,
162	.product_desc = "LH7A404 OHCI",
163	.hcd_priv_size = sizeof(struct ohci_hcd),
164
165	/*
166	* generic hardware linkage
167	*/
168	.irq = ohci_irq,
169	.flags = HCD_USB11 \| HCD_MEMORY,
170
171	/*
172	* basic lifecycle operations
173	*/
174	.start = ohci_lh7a404_start,
175	#ifdef CONFIG_PM
176	/* suspend: ohci_lh7a404_suspend, -- tbd */
177	/* resume: ohci_lh7a404_resume, -- tbd */
178	#endif /CONFIG_PM/
179	.stop = ohci_stop,
180
181	/*
182	* managing i/o requests and associated device resources
183	*/
184	.urb_enqueue = ohci_urb_enqueue,
185	.urb_dequeue = ohci_urb_dequeue,
186	.endpoint_disable = ohci_endpoint_disable,
187
188	/*
189	* scheduling support
190	*/
191	.get_frame_number = ohci_get_frame,
192
193	/*
194	* root hub support
195	*/
196	.hub_status_data = ohci_hub_status_data,
197	.hub_control = ohci_hub_control,
9293677a	198	#ifdef CONFIG_PM
0c0382e3 AS	199	.bus_suspend = ohci_bus_suspend,
0c0382e3 AS	200	.bus_resume = ohci_bus_resume,
9293677a DB	201	#endif
9293677a DB	202	.start_port_reset = ohci_start_port_reset,
1da177e4 LT	203	};
	204
	205	/-------------------------------------------------------------------------/
	206
3ae5eaec	207	static int ohci_hcd_lh7a404_drv_probe(struct platform_device *pdev)
1da177e4	208	{
1da177e4 LT	209	int ret;
	210
	211	pr_debug ("In ohci_hcd_lh7a404_drv_probe");
	212
	213	if (usb_disabled())
	214	return -ENODEV;
	215
	216	ret = usb_hcd_lh7a404_probe(&ohci_lh7a404_hc_driver, pdev);
	217	return ret;
	218	}
	219
3ae5eaec	220	static int ohci_hcd_lh7a404_drv_remove(struct platform_device *pdev)
1da177e4	221	{
87cf2039	222	struct usb_hcd *hcd = platform_get_drvdata(pdev);
1da177e4 LT	223
	224	usb_hcd_lh7a404_remove(hcd, pdev);
	225	return 0;
	226	}
	227	/TBD/
3ae5eaec	228	/static int ohci_hcd_lh7a404_drv_suspend(struct platform_device dev)
1da177e4	229	{
3ae5eaec	230	struct usb_hcd *hcd = platform_get_drvdata(dev);
1da177e4 LT	231
	232	return 0;
	233	}
3ae5eaec	234	static int ohci_hcd_lh7a404_drv_resume(struct platform_device *dev)
1da177e4	235	{
3ae5eaec	236	struct usb_hcd *hcd = platform_get_drvdata(dev);
1da177e4 LT	237
	238
	239	return 0;
	240	}
	241	*/
	242
3ae5eaec	243	static struct platform_driver ohci_hcd_lh7a404_driver = {
1da177e4 LT	244	.probe = ohci_hcd_lh7a404_drv_probe,
	245	.remove = ohci_hcd_lh7a404_drv_remove,
	246	/.suspend = ohci_hcd_lh7a404_drv_suspend, /
	247	/.resume = ohci_hcd_lh7a404_drv_resume, /
3ae5eaec RK	248	.driver = {
	249	.name = "lh7a404-ohci",
	250	.owner = THIS_MODULE,
	251	},
1da177e4 LT	252	};
	253
	254	static int __init ohci_hcd_lh7a404_init (void)
	255	{
	256	pr_debug (DRIVER_INFO " (LH7A404)");
	257	pr_debug ("block sizes: ed %d td %d\n",
	258	sizeof (struct ed), sizeof (struct td));
	259
3ae5eaec	260	return platform_driver_register(&ohci_hcd_lh7a404_driver);
1da177e4 LT	261	}
	262
	263	static void __exit ohci_hcd_lh7a404_cleanup (void)
	264	{
3ae5eaec	265	platform_driver_unregister(&ohci_hcd_lh7a404_driver);
1da177e4 LT	266	}
	267
	268	module_init (ohci_hcd_lh7a404_init);
	269	module_exit (ohci_hcd_lh7a404_cleanup);