[GitHub/mt8127/android_kernel_alcatel_ttab.git] / drivers / usb / host / ehci-au1xxx.c

/*
 * EHCI HCD (Host Controller Driver) for USB.
 *
 * Bus Glue for AMD Alchemy Au1xxx
 *
 * Based on "ohci-au1xxx.c" by Matt Porter <mporter@kernel.crashing.org>
 *
 * Modified for AMD Alchemy Au1200 EHC
 *  by K.Boge <karsten.boge@amd.com>
 *
 * This file is licenced under the GPL.
 */

#include <linux/platform_device.h>
#include <asm/mach-au1x00/au1000.h>


extern int usb_disabled(void);

static int au1xxx_ehci_setup(struct usb_hcd *hcd)
{
	struct ehci_hcd *ehci = hcd_to_ehci(hcd);
	int ret;

	ehci->caps = hcd->regs;
	ret = ehci_setup(hcd);

	ehci->need_io_watchdog = 0;
	return ret;
}

static const struct hc_driver ehci_au1xxx_hc_driver = {
	.description		= hcd_name,
	.product_desc		= "Au1xxx EHCI",
	.hcd_priv_size		= sizeof(struct ehci_hcd),

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

	/*
	 * basic lifecycle operations
	 *
	 * FIXME -- ehci_init() doesn't do enough here.
	 * See ehci-ppc-soc for a complete implementation.
	 */
	.reset			= au1xxx_ehci_setup,
	.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,
	.bus_suspend		= ehci_bus_suspend,
	.bus_resume		= ehci_bus_resume,
	.relinquish_port	= ehci_relinquish_port,
	.port_handed_over	= ehci_port_handed_over,

	.clear_tt_buffer_complete	= ehci_clear_tt_buffer_complete,
};

static int ehci_hcd_au1xxx_drv_probe(struct platform_device *pdev)
{
	struct usb_hcd *hcd;
	struct resource *res;
	int ret;

	if (usb_disabled())
		return -ENODEV;

	if (pdev->resource[1].flags != IORESOURCE_IRQ) {
		pr_debug("resource[1] is not IORESOURCE_IRQ");
		return -ENOMEM;
	}
	hcd = usb_create_hcd(&ehci_au1xxx_hc_driver, &pdev->dev, "Au1xxx");
	if (!hcd)
		return -ENOMEM;

	res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
	hcd->rsrc_start = res->start;
	hcd->rsrc_len = resource_size(res);

	hcd->regs = devm_request_and_ioremap(&pdev->dev, res);
	if (!hcd->regs) {
		pr_debug("devm_request_and_ioremap failed");
		ret = -ENOMEM;
		goto err1;
	}

	if (alchemy_usb_control(ALCHEMY_USB_EHCI0, 1)) {
		printk(KERN_INFO "%s: controller init failed!\n", pdev->name);
		ret = -ENODEV;
		goto err1;
	}

	ret = usb_add_hcd(hcd, pdev->resource[1].start,
			  IRQF_SHARED);
	if (ret == 0) {
		platform_set_drvdata(pdev, hcd);
		return ret;
	}

	alchemy_usb_control(ALCHEMY_USB_EHCI0, 0);
err1:
	usb_put_hcd(hcd);
	return ret;
}

static int ehci_hcd_au1xxx_drv_remove(struct platform_device *pdev)
{
	struct usb_hcd *hcd = platform_get_drvdata(pdev);

	usb_remove_hcd(hcd);
	alchemy_usb_control(ALCHEMY_USB_EHCI0, 0);
	usb_put_hcd(hcd);
	platform_set_drvdata(pdev, NULL);

	return 0;
}

#ifdef CONFIG_PM
static int ehci_hcd_au1xxx_drv_suspend(struct device *dev)
{
	struct usb_hcd *hcd = dev_get_drvdata(dev);
	bool do_wakeup = device_may_wakeup(dev);
	int rc;

	rc = ehci_suspend(hcd, do_wakeup);
	alchemy_usb_control(ALCHEMY_USB_EHCI0, 0);

	return rc;
}

static int ehci_hcd_au1xxx_drv_resume(struct device *dev)
{
	struct usb_hcd *hcd = dev_get_drvdata(dev);

	alchemy_usb_control(ALCHEMY_USB_EHCI0, 1);
	ehci_resume(hcd, false);

	return 0;
}

static const struct dev_pm_ops au1xxx_ehci_pmops = {
	.suspend	= ehci_hcd_au1xxx_drv_suspend,
	.resume		= ehci_hcd_au1xxx_drv_resume,
};

#define AU1XXX_EHCI_PMOPS &au1xxx_ehci_pmops

#else
#define AU1XXX_EHCI_PMOPS NULL
#endif

static struct platform_driver ehci_hcd_au1xxx_driver = {
	.probe		= ehci_hcd_au1xxx_drv_probe,
	.remove		= ehci_hcd_au1xxx_drv_remove,
	.shutdown	= usb_hcd_platform_shutdown,
	.driver = {
		.name	= "au1xxx-ehci",
		.owner	= THIS_MODULE,
		.pm	= AU1XXX_EHCI_PMOPS,
	}
};

MODULE_ALIAS("platform:au1xxx-ehci");
Commit	Line	Data
76fa9a24 JC	1	/*
	2	* EHCI HCD (Host Controller Driver) for USB.
	3	*
76fa9a24 JC	4	* Bus Glue for AMD Alchemy Au1xxx
	5	*
	6	* Based on "ohci-au1xxx.c" by Matt Porter <mporter@kernel.crashing.org>
	7	*
	8	* Modified for AMD Alchemy Au1200 EHC
	9	* by K.Boge <karsten.boge@amd.com>
	10	*
	11	* This file is licenced under the GPL.
	12	*/
	13
	14	#include <linux/platform_device.h>
	15	#include <asm/mach-au1x00/au1000.h>
	16
76fa9a24	17
76fa9a24 JC	18	extern int usb_disabled(void);
76fa9a24 JC	19
9757de38 ML	20	static int au1xxx_ehci_setup(struct usb_hcd *hcd)
	21	{
	22	struct ehci_hcd *ehci = hcd_to_ehci(hcd);
1a49e2ac AS	23	int ret;
	24
	25	ehci->caps = hcd->regs;
	26	ret = ehci_setup(hcd);
9757de38 ML	27
	28	ehci->need_io_watchdog = 0;
	29	return ret;
	30	}
	31
53c81a34 ML	32	static const struct hc_driver ehci_au1xxx_hc_driver = {
	33	.description = hcd_name,
	34	.product_desc = "Au1xxx EHCI",
	35	.hcd_priv_size = sizeof(struct ehci_hcd),
76fa9a24	36
53c81a34 ML	37	/*
	38	* generic hardware linkage
	39	*/
	40	.irq = ehci_irq,
	41	.flags = HCD_MEMORY \| HCD_USB2,
76fa9a24	42
53c81a34 ML	43	/*
	44	* basic lifecycle operations
	45	*
	46	* FIXME -- ehci_init() doesn't do enough here.
	47	* See ehci-ppc-soc for a complete implementation.
	48	*/
9757de38	49	.reset = au1xxx_ehci_setup,
53c81a34 ML	50	.start = ehci_run,
	51	.stop = ehci_stop,
	52	.shutdown = ehci_shutdown,
	53
	54	/*
	55	* managing i/o requests and associated device resources
	56	*/
	57	.urb_enqueue = ehci_urb_enqueue,
	58	.urb_dequeue = ehci_urb_dequeue,
	59	.endpoint_disable = ehci_endpoint_disable,
b18ffd49	60	.endpoint_reset = ehci_endpoint_reset,
53c81a34 ML	61
	62	/*
	63	* scheduling support
	64	*/
	65	.get_frame_number = ehci_get_frame,
	66
	67	/*
	68	* root hub support
	69	*/
	70	.hub_status_data = ehci_hub_status_data,
	71	.hub_control = ehci_hub_control,
	72	.bus_suspend = ehci_bus_suspend,
	73	.bus_resume = ehci_bus_resume,
	74	.relinquish_port = ehci_relinquish_port,
	75	.port_handed_over = ehci_port_handed_over,
914b7012 AS	76
914b7012 AS	77	.clear_tt_buffer_complete = ehci_clear_tt_buffer_complete,
53c81a34 ML	78	};
	79
	80	static int ehci_hcd_au1xxx_drv_probe(struct platform_device *pdev)
76fa9a24	81	{
76fa9a24	82	struct usb_hcd *hcd;
1f141ca2	83	struct resource *res;
53c81a34	84	int ret;
76fa9a24	85
53c81a34 ML	86	if (usb_disabled())
53c81a34 ML	87	return -ENODEV;
76fa9a24	88
53c81a34	89	if (pdev->resource[1].flags != IORESOURCE_IRQ) {
76fa9a24	90	pr_debug("resource[1] is not IORESOURCE_IRQ");
53c81a34	91	return -ENOMEM;
76fa9a24	92	}
53c81a34	93	hcd = usb_create_hcd(&ehci_au1xxx_hc_driver, &pdev->dev, "Au1xxx");
76fa9a24 JC	94	if (!hcd)
76fa9a24 JC	95	return -ENOMEM;
53c81a34	96
1f141ca2 HS	97	res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
	98	hcd->rsrc_start = res->start;
	99	hcd->rsrc_len = resource_size(res);
76fa9a24	100
8ca41ae3	101	hcd->regs = devm_request_and_ioremap(&pdev->dev, res);
76fa9a24	102	if (!hcd->regs) {
8ca41ae3	103	pr_debug("devm_request_and_ioremap failed");
53c81a34	104	ret = -ENOMEM;
8ca41ae3	105	goto err1;
76fa9a24 JC	106	}
76fa9a24 JC	107
ce6bc922 ML	108	if (alchemy_usb_control(ALCHEMY_USB_EHCI0, 1)) {
	109	printk(KERN_INFO "%s: controller init failed!\n", pdev->name);
	110	ret = -ENODEV;
8ca41ae3	111	goto err1;
ce6bc922	112	}
53c81a34	113
53c81a34	114	ret = usb_add_hcd(hcd, pdev->resource[1].start,
b5dd18d8	115	IRQF_SHARED);
53c81a34 ML	116	if (ret == 0) {
	117	platform_set_drvdata(pdev, hcd);
	118	return ret;
	119	}
76fa9a24	120
ce6bc922	121	alchemy_usb_control(ALCHEMY_USB_EHCI0, 0);
76fa9a24 JC	122	err1:
76fa9a24 JC	123	usb_put_hcd(hcd);
53c81a34	124	return ret;
76fa9a24 JC	125	}
76fa9a24 JC	126
53c81a34	127	static int ehci_hcd_au1xxx_drv_remove(struct platform_device *pdev)
76fa9a24	128	{
53c81a34 ML	129	struct usb_hcd *hcd = platform_get_drvdata(pdev);
53c81a34 ML	130
76fa9a24	131	usb_remove_hcd(hcd);
ce6bc922	132	alchemy_usb_control(ALCHEMY_USB_EHCI0, 0);
76fa9a24	133	usb_put_hcd(hcd);
53c81a34	134	platform_set_drvdata(pdev, NULL);
76fa9a24	135
76fa9a24 JC	136	return 0;
	137	}
	138
42bfc7b4	139	#ifdef CONFIG_PM
807fcb5e	140	static int ehci_hcd_au1xxx_drv_suspend(struct device *dev)
76fa9a24	141	{
807fcb5e	142	struct usb_hcd *hcd = dev_get_drvdata(dev);
c5cf9212 AS	143	bool do_wakeup = device_may_wakeup(dev);
c5cf9212 AS	144	int rc;
42bfc7b4	145
c5cf9212	146	rc = ehci_suspend(hcd, do_wakeup);
ce6bc922	147	alchemy_usb_control(ALCHEMY_USB_EHCI0, 0);
a7535ac0	148
42bfc7b4	149	return rc;
76fa9a24	150	}
42bfc7b4	151
807fcb5e	152	static int ehci_hcd_au1xxx_drv_resume(struct device *dev)
76fa9a24	153	{
807fcb5e	154	struct usb_hcd *hcd = dev_get_drvdata(dev);
42bfc7b4	155
ce6bc922	156	alchemy_usb_control(ALCHEMY_USB_EHCI0, 1);
c5cf9212	157	ehci_resume(hcd, false);
76fa9a24 JC	158
	159	return 0;
	160	}
42bfc7b4	161
47145210	162	static const struct dev_pm_ops au1xxx_ehci_pmops = {
807fcb5e ML	163	.suspend = ehci_hcd_au1xxx_drv_suspend,
	164	.resume = ehci_hcd_au1xxx_drv_resume,
	165	};
	166
	167	#define AU1XXX_EHCI_PMOPS &au1xxx_ehci_pmops
	168
42bfc7b4	169	#else
807fcb5e	170	#define AU1XXX_EHCI_PMOPS NULL
42bfc7b4	171	#endif
53c81a34	172
d14feb5e	173	static struct platform_driver ehci_hcd_au1xxx_driver = {
53c81a34 ML	174	.probe = ehci_hcd_au1xxx_drv_probe,
	175	.remove = ehci_hcd_au1xxx_drv_remove,
	176	.shutdown = usb_hcd_platform_shutdown,
d14feb5e	177	.driver = {
53c81a34 ML	178	.name = "au1xxx-ehci",
53c81a34 ML	179	.owner = THIS_MODULE,
807fcb5e	180	.pm = AU1XXX_EHCI_PMOPS,
d14feb5e	181	}
76fa9a24	182	};
53c81a34 ML	183
53c81a34 ML	184	MODULE_ALIAS("platform:au1xxx-ehci");