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

/*
 * drivers/usb/host/ehci-orion.c
 *
 * Tzachi Perelstein <tzachi@marvell.com>
 *
 * This file is licensed under  the terms of the GNU General Public
 * License version 2. This program is licensed "as is" without any
 * warranty of any kind, whether express or implied.
 */

#include <linux/kernel.h>
#include <linux/module.h>
#include <linux/platform_device.h>
#include <linux/mbus.h>
#include <linux/clk.h>
#include <linux/platform_data/usb-ehci-orion.h>
#include <linux/of.h>
#include <linux/of_device.h>
#include <linux/of_irq.h>
#include <linux/usb.h>
#include <linux/usb/hcd.h>
#include <linux/io.h>
#include <linux/dma-mapping.h>

#include "ehci.h"

#define rdl(off)	__raw_readl(hcd->regs + (off))
#define wrl(off, val)	__raw_writel((val), hcd->regs + (off))

#define USB_CMD			0x140
#define USB_MODE		0x1a8
#define USB_CAUSE		0x310
#define USB_MASK		0x314
#define USB_WINDOW_CTRL(i)	(0x320 + ((i) << 4))
#define USB_WINDOW_BASE(i)	(0x324 + ((i) << 4))
#define USB_IPG			0x360
#define USB_PHY_PWR_CTRL	0x400
#define USB_PHY_TX_CTRL		0x420
#define USB_PHY_RX_CTRL		0x430
#define USB_PHY_IVREF_CTRL	0x440
#define USB_PHY_TST_GRP_CTRL	0x450

#define DRIVER_DESC "EHCI orion driver"

#define hcd_to_orion_priv(h) ((struct orion_ehci_hcd *)hcd_to_ehci(h)->priv)

struct orion_ehci_hcd {
	struct clk *clk;
};

static const char hcd_name[] = "ehci-orion";

static struct hc_driver __read_mostly ehci_orion_hc_driver;

/*
 * Implement Orion USB controller specification guidelines
 */
static void orion_usb_phy_v1_setup(struct usb_hcd *hcd)
{
	/* The below GLs are according to the Orion Errata document */
	/*
	 * Clear interrupt cause and mask
	 */
	wrl(USB_CAUSE, 0);
	wrl(USB_MASK, 0);

	/*
	 * Reset controller
	 */
	wrl(USB_CMD, rdl(USB_CMD) | 0x2);
	while (rdl(USB_CMD) & 0x2);

	/*
	 * GL# USB-10: Set IPG for non start of frame packets
	 * Bits[14:8]=0xc
	 */
	wrl(USB_IPG, (rdl(USB_IPG) & ~0x7f00) | 0xc00);

	/*
	 * GL# USB-9: USB 2.0 Power Control
	 * BG_VSEL[7:6]=0x1
	 */
	wrl(USB_PHY_PWR_CTRL, (rdl(USB_PHY_PWR_CTRL) & ~0xc0)| 0x40);

	/*
	 * GL# USB-1: USB PHY Tx Control - force calibration to '8'
	 * TXDATA_BLOCK_EN[21]=0x1, EXT_RCAL_EN[13]=0x1, IMP_CAL[6:3]=0x8
	 */
	wrl(USB_PHY_TX_CTRL, (rdl(USB_PHY_TX_CTRL) & ~0x78) | 0x202040);

	/*
	 * GL# USB-3 GL# USB-9: USB PHY Rx Control
	 * RXDATA_BLOCK_LENGHT[31:30]=0x3, EDGE_DET_SEL[27:26]=0,
	 * CDR_FASTLOCK_EN[21]=0, DISCON_THRESHOLD[9:8]=0, SQ_THRESH[7:4]=0x1
	 */
	wrl(USB_PHY_RX_CTRL, (rdl(USB_PHY_RX_CTRL) & ~0xc2003f0) | 0xc0000010);

	/*
	 * GL# USB-3 GL# USB-9: USB PHY IVREF Control
	 * PLLVDD12[1:0]=0x2, RXVDD[5:4]=0x3, Reserved[19]=0
	 */
	wrl(USB_PHY_IVREF_CTRL, (rdl(USB_PHY_IVREF_CTRL) & ~0x80003 ) | 0x32);

	/*
	 * GL# USB-3 GL# USB-9: USB PHY Test Group Control
	 * REG_FIFO_SQ_RST[15]=0
	 */
	wrl(USB_PHY_TST_GRP_CTRL, rdl(USB_PHY_TST_GRP_CTRL) & ~0x8000);

	/*
	 * Stop and reset controller
	 */
	wrl(USB_CMD, rdl(USB_CMD) & ~0x1);
	wrl(USB_CMD, rdl(USB_CMD) | 0x2);
	while (rdl(USB_CMD) & 0x2);

	/*
	 * GL# USB-5 Streaming disable REG_USB_MODE[4]=1
	 * TBD: This need to be done after each reset!
	 * GL# USB-4 Setup USB Host mode
	 */
	wrl(USB_MODE, 0x13);
}

static void
ehci_orion_conf_mbus_windows(struct usb_hcd *hcd,
			     const struct mbus_dram_target_info *dram)
{
	int i;

	for (i = 0; i < 4; i++) {
		wrl(USB_WINDOW_CTRL(i), 0);
		wrl(USB_WINDOW_BASE(i), 0);
	}

	for (i = 0; i < dram->num_cs; i++) {
		const struct mbus_dram_window *cs = dram->cs + i;

		wrl(USB_WINDOW_CTRL(i), ((cs->size - 1) & 0xffff0000) |
					(cs->mbus_attr << 8) |
					(dram->mbus_dram_target_id << 4) | 1);
		wrl(USB_WINDOW_BASE(i), cs->base);
	}
}

static const struct ehci_driver_overrides orion_overrides __initconst = {
	.extra_priv_size =	sizeof(struct orion_ehci_hcd),
};

static int ehci_orion_drv_probe(struct platform_device *pdev)
{
	struct orion_ehci_data *pd = dev_get_platdata(&pdev->dev);
	const struct mbus_dram_target_info *dram;
	struct resource *res;
	struct usb_hcd *hcd;
	struct ehci_hcd *ehci;
	void __iomem *regs;
	int irq, err;
	enum orion_ehci_phy_ver phy_version;
	struct orion_ehci_hcd *priv;

	if (usb_disabled())
		return -ENODEV;

	pr_debug("Initializing Orion-SoC USB Host Controller\n");

	irq = platform_get_irq(pdev, 0);
	if (irq <= 0) {
		dev_err(&pdev->dev,
			"Found HC with no IRQ. Check %s setup!\n",
			dev_name(&pdev->dev));
		err = -ENODEV;
		goto err;
	}

	res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
	if (!res) {
		dev_err(&pdev->dev,
			"Found HC with no register addr. Check %s setup!\n",
			dev_name(&pdev->dev));
		err = -ENODEV;
		goto err;
	}

	/*
	 * Right now device-tree probed devices don't get dma_mask
	 * set. Since shared usb code relies on it, set it here for
	 * now. Once we have dma capability bindings this can go away.
	 */
	err = dma_coerce_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(32));
	if (err)
		goto err;

	regs = devm_ioremap_resource(&pdev->dev, res);
	if (IS_ERR(regs)) {
		err = PTR_ERR(regs);
		goto err;
	}

	hcd = usb_create_hcd(&ehci_orion_hc_driver,
			&pdev->dev, dev_name(&pdev->dev));
	if (!hcd) {
		err = -ENOMEM;
		goto err;
	}

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

	ehci = hcd_to_ehci(hcd);
	ehci->caps = hcd->regs + 0x100;
	hcd->has_tt = 1;

	priv = hcd_to_orion_priv(hcd);
	/*
	 * Not all platforms can gate the clock, so it is not an error if
	 * the clock does not exists.
	 */
	priv->clk = devm_clk_get(&pdev->dev, NULL);
	if (!IS_ERR(priv->clk))
		clk_prepare_enable(priv->clk);

	/*
	 * (Re-)program MBUS remapping windows if we are asked to.
	 */
	dram = mv_mbus_dram_info();
	if (dram)
		ehci_orion_conf_mbus_windows(hcd, dram);

	/*
	 * setup Orion USB controller.
	 */
	if (pdev->dev.of_node)
		phy_version = EHCI_PHY_NA;
	else
		phy_version = pd->phy_version;

	switch (phy_version) {
	case EHCI_PHY_NA:	/* dont change USB phy settings */
		break;
	case EHCI_PHY_ORION:
		orion_usb_phy_v1_setup(hcd);
		break;
	case EHCI_PHY_DD:
	case EHCI_PHY_KW:
	default:
		dev_warn(&pdev->dev, "USB phy version isn't supported.\n");
	}

	err = usb_add_hcd(hcd, irq, IRQF_SHARED);
	if (err)
		goto err_add_hcd;

	device_wakeup_enable(hcd->self.controller);
	return 0;

err_add_hcd:
	if (!IS_ERR(priv->clk))
		clk_disable_unprepare(priv->clk);
	usb_put_hcd(hcd);
err:
	dev_err(&pdev->dev, "init %s fail, %d\n",
		dev_name(&pdev->dev), err);

	return err;
}

static int ehci_orion_drv_remove(struct platform_device *pdev)
{
	struct usb_hcd *hcd = platform_get_drvdata(pdev);
	struct orion_ehci_hcd *priv = hcd_to_orion_priv(hcd);

	usb_remove_hcd(hcd);

	if (!IS_ERR(priv->clk))
		clk_disable_unprepare(priv->clk);

	usb_put_hcd(hcd);

	return 0;
}

static const struct of_device_id ehci_orion_dt_ids[] = {
	{ .compatible = "marvell,orion-ehci", },
	{},
};
MODULE_DEVICE_TABLE(of, ehci_orion_dt_ids);

static struct platform_driver ehci_orion_driver = {
	.probe		= ehci_orion_drv_probe,
	.remove		= ehci_orion_drv_remove,
	.shutdown	= usb_hcd_platform_shutdown,
	.driver = {
		.name	= "orion-ehci",
		.owner  = THIS_MODULE,
		.of_match_table = ehci_orion_dt_ids,
	},
};

static int __init ehci_orion_init(void)
{
	if (usb_disabled())
		return -ENODEV;

	pr_info("%s: " DRIVER_DESC "\n", hcd_name);

	ehci_init_driver(&ehci_orion_hc_driver, &orion_overrides);
	return platform_driver_register(&ehci_orion_driver);
}
module_init(ehci_orion_init);

static void __exit ehci_orion_cleanup(void)
{
	platform_driver_unregister(&ehci_orion_driver);
}
module_exit(ehci_orion_cleanup);

MODULE_DESCRIPTION(DRIVER_DESC);
MODULE_ALIAS("platform:orion-ehci");
MODULE_AUTHOR("Tzachi Perelstein");
MODULE_LICENSE("GPL v2");
Commit	Line	Data
e96ffe2f TP	1	/*
	2	* drivers/usb/host/ehci-orion.c
	3	*
	4	* Tzachi Perelstein <tzachi@marvell.com>
	5	*
	6	* This file is licensed under the terms of the GNU General Public
	7	* License version 2. This program is licensed "as is" without any
	8	* warranty of any kind, whether express or implied.
	9	*/
	10
	11	#include <linux/kernel.h>
	12	#include <linux/module.h>
	13	#include <linux/platform_device.h>
92aecfa9	14	#include <linux/mbus.h>
8c869eda	15	#include <linux/clk.h>
c02cecb9	16	#include <linux/platform_data/usb-ehci-orion.h>
77dae54a AL	17	#include <linux/of.h>
	18	#include <linux/of_device.h>
	19	#include <linux/of_irq.h>
a76dd463 MG	20	#include <linux/usb.h>
	21	#include <linux/usb/hcd.h>
	22	#include <linux/io.h>
	23	#include <linux/dma-mapping.h>
	24
	25	#include "ehci.h"
e96ffe2f TP	26
	27	#define rdl(off) __raw_readl(hcd->regs + (off))
	28	#define wrl(off, val) __raw_writel((val), hcd->regs + (off))
	29
e96ffe2f TP	30	#define USB_CMD 0x140
e96ffe2f TP	31	#define USB_MODE 0x1a8
92aecfa9 LB	32	#define USB_CAUSE 0x310
	33	#define USB_MASK 0x314
	34	#define USB_WINDOW_CTRL(i) (0x320 + ((i) << 4))
	35	#define USB_WINDOW_BASE(i) (0x324 + ((i) << 4))
e96ffe2f TP	36	#define USB_IPG 0x360
	37	#define USB_PHY_PWR_CTRL 0x400
	38	#define USB_PHY_TX_CTRL 0x420
	39	#define USB_PHY_RX_CTRL 0x430
	40	#define USB_PHY_IVREF_CTRL 0x440
	41	#define USB_PHY_TST_GRP_CTRL 0x450
	42
a76dd463 MG	43	#define DRIVER_DESC "EHCI orion driver"
a76dd463 MG	44
ac069662 GC	45	#define hcd_to_orion_priv(h) ((struct orion_ehci_hcd *)hcd_to_ehci(h)->priv)
	46
	47	struct orion_ehci_hcd {
	48	struct clk *clk;
	49	};
	50
a76dd463 MG	51	static const char hcd_name[] = "ehci-orion";
	52
	53	static struct hc_driver __read_mostly ehci_orion_hc_driver;
	54
e96ffe2f TP	55	/*
	56	* Implement Orion USB controller specification guidelines
	57	*/
fb6f5529	58	static void orion_usb_phy_v1_setup(struct usb_hcd *hcd)
e96ffe2f	59	{
fb6f5529	60	/* The below GLs are according to the Orion Errata document */
e96ffe2f TP	61	/*
	62	* Clear interrupt cause and mask
	63	*/
	64	wrl(USB_CAUSE, 0);
	65	wrl(USB_MASK, 0);
	66
	67	/*
	68	* Reset controller
	69	*/
	70	wrl(USB_CMD, rdl(USB_CMD) \| 0x2);
	71	while (rdl(USB_CMD) & 0x2);
	72
	73	/*
	74	* GL# USB-10: Set IPG for non start of frame packets
	75	* Bits[14:8]=0xc
	76	*/
	77	wrl(USB_IPG, (rdl(USB_IPG) & ~0x7f00) \| 0xc00);
	78
	79	/*
	80	* GL# USB-9: USB 2.0 Power Control
	81	* BG_VSEL[7:6]=0x1
	82	*/
	83	wrl(USB_PHY_PWR_CTRL, (rdl(USB_PHY_PWR_CTRL) & ~0xc0)\| 0x40);
	84
	85	/*
	86	* GL# USB-1: USB PHY Tx Control - force calibration to '8'
	87	* TXDATA_BLOCK_EN[21]=0x1, EXT_RCAL_EN[13]=0x1, IMP_CAL[6:3]=0x8
	88	*/
	89	wrl(USB_PHY_TX_CTRL, (rdl(USB_PHY_TX_CTRL) & ~0x78) \| 0x202040);
	90
	91	/*
	92	* GL# USB-3 GL# USB-9: USB PHY Rx Control
	93	* RXDATA_BLOCK_LENGHT[31:30]=0x3, EDGE_DET_SEL[27:26]=0,
	94	* CDR_FASTLOCK_EN[21]=0, DISCON_THRESHOLD[9:8]=0, SQ_THRESH[7:4]=0x1
	95	*/
	96	wrl(USB_PHY_RX_CTRL, (rdl(USB_PHY_RX_CTRL) & ~0xc2003f0) \| 0xc0000010);
	97
	98	/*
	99	* GL# USB-3 GL# USB-9: USB PHY IVREF Control
	100	* PLLVDD12[1:0]=0x2, RXVDD[5:4]=0x3, Reserved[19]=0
	101	*/
	102	wrl(USB_PHY_IVREF_CTRL, (rdl(USB_PHY_IVREF_CTRL) & ~0x80003 ) \| 0x32);
	103
	104	/*
	105	* GL# USB-3 GL# USB-9: USB PHY Test Group Control
	106	* REG_FIFO_SQ_RST[15]=0
	107	*/
	108	wrl(USB_PHY_TST_GRP_CTRL, rdl(USB_PHY_TST_GRP_CTRL) & ~0x8000);
	109
	110	/*
	111	* Stop and reset controller
	112	*/
	113	wrl(USB_CMD, rdl(USB_CMD) & ~0x1);
	114	wrl(USB_CMD, rdl(USB_CMD) \| 0x2);
	115	while (rdl(USB_CMD) & 0x2);
	116
	117	/*
	118	* GL# USB-5 Streaming disable REG_USB_MODE[4]=1
	119	* TBD: This need to be done after each reset!
	120	* GL# USB-4 Setup USB Host mode
	121	*/
	122	wrl(USB_MODE, 0x13);
	123	}
	124
41ac7b3a	125	static void
92aecfa9	126	ehci_orion_conf_mbus_windows(struct usb_hcd *hcd,
63a9332b	127	const struct mbus_dram_target_info *dram)
92aecfa9 LB	128	{
	129	int i;
	130
	131	for (i = 0; i < 4; i++) {
	132	wrl(USB_WINDOW_CTRL(i), 0);
	133	wrl(USB_WINDOW_BASE(i), 0);
	134	}
	135
	136	for (i = 0; i < dram->num_cs; i++) {
63a9332b	137	const struct mbus_dram_window *cs = dram->cs + i;
92aecfa9 LB	138
	139	wrl(USB_WINDOW_CTRL(i), ((cs->size - 1) & 0xffff0000) \|
	140	(cs->mbus_attr << 8) \|
	141	(dram->mbus_dram_target_id << 4) \| 1);
	142	wrl(USB_WINDOW_BASE(i), cs->base);
	143	}
	144	}
	145
ac069662 GC	146	static const struct ehci_driver_overrides orion_overrides __initconst = {
	147	.extra_priv_size = sizeof(struct orion_ehci_hcd),
	148	};
	149
41ac7b3a	150	static int ehci_orion_drv_probe(struct platform_device *pdev)
e96ffe2f	151	{
d4f09e28	152	struct orion_ehci_data *pd = dev_get_platdata(&pdev->dev);
63a9332b	153	const struct mbus_dram_target_info *dram;
e96ffe2f TP	154	struct resource *res;
	155	struct usb_hcd *hcd;
	156	struct ehci_hcd *ehci;
	157	void __iomem *regs;
	158	int irq, err;
77dae54a	159	enum orion_ehci_phy_ver phy_version;
ac069662	160	struct orion_ehci_hcd *priv;
e96ffe2f TP	161
	162	if (usb_disabled())
	163	return -ENODEV;
	164
	165	pr_debug("Initializing Orion-SoC USB Host Controller\n");
	166
88bf6b3f	167	irq = platform_get_irq(pdev, 0);
e96ffe2f TP	168	if (irq <= 0) {
	169	dev_err(&pdev->dev,
	170	"Found HC with no IRQ. Check %s setup!\n",
7071a3ce	171	dev_name(&pdev->dev));
e96ffe2f	172	err = -ENODEV;
d8ea69e2	173	goto err;
e96ffe2f TP	174	}
	175
	176	res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
	177	if (!res) {
	178	dev_err(&pdev->dev,
	179	"Found HC with no register addr. Check %s setup!\n",
7071a3ce	180	dev_name(&pdev->dev));
e96ffe2f	181	err = -ENODEV;
d8ea69e2	182	goto err;
e96ffe2f TP	183	}
e96ffe2f TP	184
77dae54a AL	185	/*
	186	* Right now device-tree probed devices don't get dma_mask
	187	* set. Since shared usb code relies on it, set it here for
	188	* now. Once we have dma capability bindings this can go away.
	189	*/
e1fd7341	190	err = dma_coerce_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(32));
22d9d8e8	191	if (err)
d8ea69e2	192	goto err;
77dae54a	193
806f6e6b JH	194	regs = devm_ioremap_resource(&pdev->dev, res);
	195	if (IS_ERR(regs)) {
	196	err = PTR_ERR(regs);
d8ea69e2	197	goto err;
e96ffe2f TP	198	}
e96ffe2f TP	199
e96ffe2f	200	hcd = usb_create_hcd(&ehci_orion_hc_driver,
7071a3ce	201	&pdev->dev, dev_name(&pdev->dev));
e96ffe2f TP	202	if (!hcd) {
e96ffe2f TP	203	err = -ENOMEM;
ac069662	204	goto err;
e96ffe2f TP	205	}
	206
	207	hcd->rsrc_start = res->start;
5672b7e6	208	hcd->rsrc_len = resource_size(res);
e96ffe2f TP	209	hcd->regs = regs;
	210
	211	ehci = hcd_to_ehci(hcd);
	212	ehci->caps = hcd->regs + 0x100;
a8e51775	213	hcd->has_tt = 1;
e96ffe2f	214
ac069662 GC	215	priv = hcd_to_orion_priv(hcd);
	216	/*
	217	* Not all platforms can gate the clock, so it is not an error if
	218	* the clock does not exists.
	219	*/
	220	priv->clk = devm_clk_get(&pdev->dev, NULL);
	221	if (!IS_ERR(priv->clk))
	222	clk_prepare_enable(priv->clk);
	223
92aecfa9 LB	224	/*
	225	* (Re-)program MBUS remapping windows if we are asked to.
	226	*/
63a9332b AL	227	dram = mv_mbus_dram_info();
	228	if (dram)
	229	ehci_orion_conf_mbus_windows(hcd, dram);
92aecfa9	230
e96ffe2f	231	/*
fb6f5529	232	* setup Orion USB controller.
e96ffe2f	233	*/
77dae54a AL	234	if (pdev->dev.of_node)
	235	phy_version = EHCI_PHY_NA;
	236	else
	237	phy_version = pd->phy_version;
	238
	239	switch (phy_version) {
fb6f5529 RS	240	case EHCI_PHY_NA: /* dont change USB phy settings */
	241	break;
	242	case EHCI_PHY_ORION:
	243	orion_usb_phy_v1_setup(hcd);
	244	break;
	245	case EHCI_PHY_DD:
	246	case EHCI_PHY_KW:
	247	default:
fb53e946	248	dev_warn(&pdev->dev, "USB phy version isn't supported.\n");
fb6f5529	249	}
e96ffe2f	250
b5dd18d8	251	err = usb_add_hcd(hcd, irq, IRQF_SHARED);
e96ffe2f	252	if (err)
d8ea69e2	253	goto err_add_hcd;
e96ffe2f	254
3c9740a1	255	device_wakeup_enable(hcd->self.controller);
e96ffe2f TP	256	return 0;
e96ffe2f TP	257
d8ea69e2	258	err_add_hcd:
ac069662 GC	259	if (!IS_ERR(priv->clk))
ac069662 GC	260	clk_disable_unprepare(priv->clk);
806f6e6b	261	usb_put_hcd(hcd);
d8ea69e2	262	err:
e96ffe2f	263	dev_err(&pdev->dev, "init %s fail, %d\n",
7071a3ce	264	dev_name(&pdev->dev), err);
e96ffe2f TP	265
	266	return err;
	267	}
	268
39d35681	269	static int ehci_orion_drv_remove(struct platform_device *pdev)
e96ffe2f TP	270	{
e96ffe2f TP	271	struct usb_hcd *hcd = platform_get_drvdata(pdev);
ac069662	272	struct orion_ehci_hcd *priv = hcd_to_orion_priv(hcd);
e96ffe2f TP	273
e96ffe2f TP	274	usb_remove_hcd(hcd);
ac069662 GC	275
	276	if (!IS_ERR(priv->clk))
	277	clk_disable_unprepare(priv->clk);
	278
e96ffe2f TP	279	usb_put_hcd(hcd);
	280
	281	return 0;
	282	}
	283
59a609a9	284	static const struct of_device_id ehci_orion_dt_ids[] = {
77dae54a AL	285	{ .compatible = "marvell,orion-ehci", },
	286	{},
	287	};
	288	MODULE_DEVICE_TABLE(of, ehci_orion_dt_ids);
	289
e96ffe2f TP	290	static struct platform_driver ehci_orion_driver = {
e96ffe2f TP	291	.probe = ehci_orion_drv_probe,
39d35681	292	.remove = ehci_orion_drv_remove,
e96ffe2f	293	.shutdown = usb_hcd_platform_shutdown,
77dae54a AL	294	.driver = {
	295	.name = "orion-ehci",
	296	.owner = THIS_MODULE,
a703d7e2	297	.of_match_table = ehci_orion_dt_ids,
77dae54a	298	},
e96ffe2f	299	};
a76dd463 MG	300
	301	static int __init ehci_orion_init(void)
	302	{
	303	if (usb_disabled())
	304	return -ENODEV;
	305
	306	pr_info("%s: " DRIVER_DESC "\n", hcd_name);
	307
ac069662	308	ehci_init_driver(&ehci_orion_hc_driver, &orion_overrides);
a76dd463 MG	309	return platform_driver_register(&ehci_orion_driver);
	310	}
	311	module_init(ehci_orion_init);
	312
	313	static void __exit ehci_orion_cleanup(void)
	314	{
	315	platform_driver_unregister(&ehci_orion_driver);
	316	}
	317	module_exit(ehci_orion_cleanup);
	318
	319	MODULE_DESCRIPTION(DRIVER_DESC);
	320	MODULE_ALIAS("platform:orion-ehci");
	321	MODULE_AUTHOR("Tzachi Perelstein");
	322	MODULE_LICENSE("GPL v2");