[linux-2.6-block.git] / drivers / usb / host / ehci-sead3.c

/*
 * MIPS CI13320A EHCI Host Controller driver
 * Based on "ehci-au1xxx.c" by K.Boge <karsten.boge@amd.com>
 *
 * Copyright (C) 2012 MIPS Technologies, Inc.
 *
 * 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; either version 2 of the License, or (at your
 * option) any later version.
 *
 * This program is distributed in the hope that it will be useful, but
 * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
 * or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
 * for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software Foundation,
 * Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
 */

#include <linux/platform_device.h>

static int ehci_sead3_setup(struct usb_hcd *hcd)
{
	int ret;
	struct ehci_hcd *ehci = hcd_to_ehci(hcd);

	ehci->caps = hcd->regs + 0x100;

#ifdef __BIG_ENDIAN
	ehci->big_endian_mmio = 1;
	ehci->big_endian_desc = 1;
#endif

	ret = ehci_setup(hcd);
	if (ret)
		return ret;

	ehci->need_io_watchdog = 0;

	/* Set burst length to 16 words. */
	ehci_writel(ehci, 0x1010, &ehci->regs->reserved1[1]);

	return ret;
}

const struct hc_driver ehci_sead3_hc_driver = {
	.description		= hcd_name,
	.product_desc		= "SEAD-3 EHCI",
	.hcd_priv_size		= sizeof(struct ehci_hcd),

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

	/*
	 * basic lifecycle operations
	 *
	 */
	.reset			= ehci_sead3_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_sead3_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_sead3_hc_driver, &pdev->dev, "SEAD-3");
	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("ioremap failed");
		ret = -ENOMEM;
		goto err1;
	}

	/* Root hub has integrated TT. */
	hcd->has_tt = 1;

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

err1:
	usb_put_hcd(hcd);
	return ret;
}

static int ehci_hcd_sead3_drv_remove(struct platform_device *pdev)
{
	struct usb_hcd *hcd = platform_get_drvdata(pdev);

	usb_remove_hcd(hcd);
	usb_put_hcd(hcd);
	platform_set_drvdata(pdev, NULL);

	return 0;
}

#ifdef CONFIG_PM
static int ehci_hcd_sead3_drv_suspend(struct device *dev)
{
	struct usb_hcd *hcd = dev_get_drvdata(dev);
	bool do_wakeup = device_may_wakeup(dev);

	return ehci_suspend(hcd, do_wakeup);
}

static int ehci_hcd_sead3_drv_resume(struct device *dev)
{
	struct usb_hcd *hcd = dev_get_drvdata(dev);

	ehci_resume(hcd, false);
	return 0;
}

static const struct dev_pm_ops sead3_ehci_pmops = {
	.suspend	= ehci_hcd_sead3_drv_suspend,
	.resume		= ehci_hcd_sead3_drv_resume,
};

#define SEAD3_EHCI_PMOPS (&sead3_ehci_pmops)

#else
#define SEAD3_EHCI_PMOPS NULL
#endif

static struct platform_driver ehci_hcd_sead3_driver = {
	.probe		= ehci_hcd_sead3_drv_probe,
	.remove		= ehci_hcd_sead3_drv_remove,
	.shutdown	= usb_hcd_platform_shutdown,
	.driver = {
		.name	= "sead3-ehci",
		.owner	= THIS_MODULE,
		.pm	= SEAD3_EHCI_PMOPS,
	}
};

MODULE_ALIAS("platform:sead3-ehci");
Commit	Line	Data
c256667f SH	1	/*
	2	* MIPS CI13320A EHCI Host Controller driver
	3	* Based on "ehci-au1xxx.c" by K.Boge <karsten.boge@amd.com>
	4	*
	5	* Copyright (C) 2012 MIPS Technologies, Inc.
	6	*
	7	* This program is free software; you can redistribute it and/or modify it
	8	* under the terms of the GNU General Public License as published by the
	9	* Free Software Foundation; either version 2 of the License, or (at your
	10	* option) any later version.
	11	*
	12	* This program is distributed in the hope that it will be useful, but
	13	* WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
	14	* or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
	15	* for more details.
	16	*
	17	* You should have received a copy of the GNU General Public License
	18	* along with this program; if not, write to the Free Software Foundation,
	19	* Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
	20	*/
	21
	22	#include <linux/platform_device.h>
	23
	24	static int ehci_sead3_setup(struct usb_hcd *hcd)
	25	{
	26	int ret;
	27	struct ehci_hcd *ehci = hcd_to_ehci(hcd);
	28
	29	ehci->caps = hcd->regs + 0x100;
	30
fdf6e639 SH	31	#ifdef __BIG_ENDIAN
	32	ehci->big_endian_mmio = 1;
	33	ehci->big_endian_desc = 1;
	34	#endif
	35
c256667f SH	36	ret = ehci_setup(hcd);
	37	if (ret)
	38	return ret;
	39
	40	ehci->need_io_watchdog = 0;
	41
c256667f	42	/* Set burst length to 16 words. */
cc59c7a9	43	ehci_writel(ehci, 0x1010, &ehci->regs->reserved1[1]);
c256667f SH	44
	45	return ret;
	46	}
	47
	48	const struct hc_driver ehci_sead3_hc_driver = {
	49	.description = hcd_name,
	50	.product_desc = "SEAD-3 EHCI",
	51	.hcd_priv_size = sizeof(struct ehci_hcd),
	52
	53	/*
	54	* generic hardware linkage
	55	*/
	56	.irq = ehci_irq,
	57	.flags = HCD_MEMORY \| HCD_USB2,
	58
	59	/*
	60	* basic lifecycle operations
	61	*
	62	*/
	63	.reset = ehci_sead3_setup,
	64	.start = ehci_run,
	65	.stop = ehci_stop,
	66	.shutdown = ehci_shutdown,
	67
	68	/*
	69	* managing i/o requests and associated device resources
	70	*/
	71	.urb_enqueue = ehci_urb_enqueue,
	72	.urb_dequeue = ehci_urb_dequeue,
	73	.endpoint_disable = ehci_endpoint_disable,
	74	.endpoint_reset = ehci_endpoint_reset,
	75
	76	/*
	77	* scheduling support
	78	*/
	79	.get_frame_number = ehci_get_frame,
	80
	81	/*
	82	* root hub support
	83	*/
	84	.hub_status_data = ehci_hub_status_data,
	85	.hub_control = ehci_hub_control,
	86	.bus_suspend = ehci_bus_suspend,
	87	.bus_resume = ehci_bus_resume,
	88	.relinquish_port = ehci_relinquish_port,
	89	.port_handed_over = ehci_port_handed_over,
	90
	91	.clear_tt_buffer_complete = ehci_clear_tt_buffer_complete,
	92	};
	93
	94	static int ehci_hcd_sead3_drv_probe(struct platform_device *pdev)
	95	{
	96	struct usb_hcd *hcd;
	97	struct resource *res;
	98	int ret;
	99
	100	if (usb_disabled())
	101	return -ENODEV;
	102
	103	if (pdev->resource[1].flags != IORESOURCE_IRQ) {
	104	pr_debug("resource[1] is not IORESOURCE_IRQ");
	105	return -ENOMEM;
	106	}
	107	hcd = usb_create_hcd(&ehci_sead3_hc_driver, &pdev->dev, "SEAD-3");
108	if (!hcd)
109	return -ENOMEM;
110
111	res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
112	hcd->rsrc_start = res->start;
113	hcd->rsrc_len = resource_size(res);
114
6c40f5ee	115	hcd->regs = devm_request_and_ioremap(&pdev->dev, res);
c256667f SH	116	if (!hcd->regs) {
	117	pr_debug("ioremap failed");
	118	ret = -ENOMEM;
6c40f5ee	119	goto err1;
c256667f SH	120	}
	121
	122	/* Root hub has integrated TT. */
	123	hcd->has_tt = 1;
	124
	125	ret = usb_add_hcd(hcd, pdev->resource[1].start,
	126	IRQF_SHARED);
	127	if (ret == 0) {
	128	platform_set_drvdata(pdev, hcd);
	129	return ret;
	130	}
	131
c256667f SH	132	err1:
	133	usb_put_hcd(hcd);
	134	return ret;
	135	}
	136
	137	static int ehci_hcd_sead3_drv_remove(struct platform_device *pdev)
	138	{
	139	struct usb_hcd *hcd = platform_get_drvdata(pdev);
	140
	141	usb_remove_hcd(hcd);
c256667f SH	142	usb_put_hcd(hcd);
	143	platform_set_drvdata(pdev, NULL);
	144
	145	return 0;
	146	}
	147
	148	#ifdef CONFIG_PM
	149	static int ehci_hcd_sead3_drv_suspend(struct device *dev)
	150	{
	151	struct usb_hcd *hcd = dev_get_drvdata(dev);
c5cf9212	152	bool do_wakeup = device_may_wakeup(dev);
c256667f	153
c5cf9212	154	return ehci_suspend(hcd, do_wakeup);
c256667f SH	155	}
	156
	157	static int ehci_hcd_sead3_drv_resume(struct device *dev)
	158	{
	159	struct usb_hcd *hcd = dev_get_drvdata(dev);
c256667f	160
c5cf9212	161	ehci_resume(hcd, false);
c256667f SH	162	return 0;
	163	}
	164
	165	static const struct dev_pm_ops sead3_ehci_pmops = {
	166	.suspend = ehci_hcd_sead3_drv_suspend,
	167	.resume = ehci_hcd_sead3_drv_resume,
	168	};
	169
	170	#define SEAD3_EHCI_PMOPS (&sead3_ehci_pmops)
	171
	172	#else
	173	#define SEAD3_EHCI_PMOPS NULL
	174	#endif
	175
	176	static struct platform_driver ehci_hcd_sead3_driver = {
	177	.probe = ehci_hcd_sead3_drv_probe,
	178	.remove = ehci_hcd_sead3_drv_remove,
	179	.shutdown = usb_hcd_platform_shutdown,
	180	.driver = {
	181	.name = "sead3-ehci",
	182	.owner = THIS_MODULE,
	183	.pm = SEAD3_EHCI_PMOPS,
	184	}
	185	};
	186
	187	MODULE_ALIAS("platform:sead3-ehci");