[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/phy/phy.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)	readl_relaxed(hcd->regs + (off))
#define wrl(off, val)	writel_relaxed((val), hcd->regs + (off))

#define USB_CMD			0x140
#define   USB_CMD_RUN		BIT(0)
#define   USB_CMD_RESET		BIT(1)
#define USB_MODE		0x1a8
#define   USB_MODE_MASK		GENMASK(1, 0)
#define   USB_MODE_DEVICE	0x2
#define   USB_MODE_HOST		0x3
#define   USB_MODE_SDIS		BIT(4)
#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;
	struct phy *phy;
};

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) | USB_CMD_RESET);
	while (rdl(USB_CMD) & USB_CMD_RESET);

	/*
	 * 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) & ~USB_CMD_RUN);
	wrl(USB_CMD, rdl(USB_CMD) | USB_CMD_RESET);
	while (rdl(USB_CMD) & USB_CMD_RESET);

	/*
	 * 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, USB_MODE_SDIS | USB_MODE_HOST);
}

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;
	}

	/*
	 * 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;

	res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
	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);

	priv->phy = devm_phy_optional_get(&pdev->dev, "usb");
	if (IS_ERR(priv->phy)) {
		err = PTR_ERR(priv->phy);
		if (err != -ENOSYS)
			goto err_phy_get;
	} else {
		err = phy_init(priv->phy);
		if (err)
			goto err_phy_init;

		err = phy_power_on(priv->phy);
		if (err)
			goto err_phy_power_on;
	}

	/*
	 * (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->phy))
		phy_power_off(priv->phy);
err_phy_power_on:
	if (!IS_ERR(priv->phy))
		phy_exit(priv->phy);
err_phy_init:
err_phy_get:
	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->phy)) {
		phy_power_off(priv->phy);
		phy_exit(priv->phy);
	}

	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",
		.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	17	#include <linux/of.h>
d445913c	18	#include <linux/phy/phy.h>
77dae54a AL	19	#include <linux/of_device.h>
77dae54a AL	20	#include <linux/of_irq.h>
a76dd463 MG	21	#include <linux/usb.h>
	22	#include <linux/usb/hcd.h>
	23	#include <linux/io.h>
	24	#include <linux/dma-mapping.h>
	25
	26	#include "ehci.h"
e96ffe2f	27
782614b8 MW	28	#define rdl(off) readl_relaxed(hcd->regs + (off))
782614b8 MW	29	#define wrl(off, val) writel_relaxed((val), hcd->regs + (off))
e96ffe2f	30
e96ffe2f	31	#define USB_CMD 0x140
24677af8 TP	32	#define USB_CMD_RUN BIT(0)
24677af8 TP	33	#define USB_CMD_RESET BIT(1)
e96ffe2f	34	#define USB_MODE 0x1a8
24677af8 TP	35	#define USB_MODE_MASK GENMASK(1, 0)
	36	#define USB_MODE_DEVICE 0x2
	37	#define USB_MODE_HOST 0x3
	38	#define USB_MODE_SDIS BIT(4)
92aecfa9 LB	39	#define USB_CAUSE 0x310
	40	#define USB_MASK 0x314
	41	#define USB_WINDOW_CTRL(i) (0x320 + ((i) << 4))
	42	#define USB_WINDOW_BASE(i) (0x324 + ((i) << 4))
e96ffe2f TP	43	#define USB_IPG 0x360
	44	#define USB_PHY_PWR_CTRL 0x400
	45	#define USB_PHY_TX_CTRL 0x420
	46	#define USB_PHY_RX_CTRL 0x430
	47	#define USB_PHY_IVREF_CTRL 0x440
	48	#define USB_PHY_TST_GRP_CTRL 0x450
	49
a76dd463 MG	50	#define DRIVER_DESC "EHCI orion driver"
a76dd463 MG	51
ac069662 GC	52	#define hcd_to_orion_priv(h) ((struct orion_ehci_hcd *)hcd_to_ehci(h)->priv)
	53
	54	struct orion_ehci_hcd {
	55	struct clk *clk;
d445913c	56	struct phy *phy;
ac069662 GC	57	};
ac069662 GC	58
a76dd463 MG	59	static const char hcd_name[] = "ehci-orion";
	60
	61	static struct hc_driver __read_mostly ehci_orion_hc_driver;
	62
e96ffe2f TP	63	/*
	64	* Implement Orion USB controller specification guidelines
	65	*/
fb6f5529	66	static void orion_usb_phy_v1_setup(struct usb_hcd *hcd)
e96ffe2f	67	{
fb6f5529	68	/* The below GLs are according to the Orion Errata document */
e96ffe2f TP	69	/*
	70	* Clear interrupt cause and mask
	71	*/
	72	wrl(USB_CAUSE, 0);
	73	wrl(USB_MASK, 0);
	74
	75	/*
	76	* Reset controller
	77	*/
24677af8 TP	78	wrl(USB_CMD, rdl(USB_CMD) \| USB_CMD_RESET);
24677af8 TP	79	while (rdl(USB_CMD) & USB_CMD_RESET);
e96ffe2f TP	80
	81	/*
	82	* GL# USB-10: Set IPG for non start of frame packets
	83	* Bits[14:8]=0xc
	84	*/
	85	wrl(USB_IPG, (rdl(USB_IPG) & ~0x7f00) \| 0xc00);
	86
	87	/*
	88	* GL# USB-9: USB 2.0 Power Control
	89	* BG_VSEL[7:6]=0x1
	90	*/
	91	wrl(USB_PHY_PWR_CTRL, (rdl(USB_PHY_PWR_CTRL) & ~0xc0)\| 0x40);
	92
	93	/*
	94	* GL# USB-1: USB PHY Tx Control - force calibration to '8'
	95	* TXDATA_BLOCK_EN[21]=0x1, EXT_RCAL_EN[13]=0x1, IMP_CAL[6:3]=0x8
	96	*/
	97	wrl(USB_PHY_TX_CTRL, (rdl(USB_PHY_TX_CTRL) & ~0x78) \| 0x202040);
	98
	99	/*
	100	* GL# USB-3 GL# USB-9: USB PHY Rx Control
	101	* RXDATA_BLOCK_LENGHT[31:30]=0x3, EDGE_DET_SEL[27:26]=0,
	102	* CDR_FASTLOCK_EN[21]=0, DISCON_THRESHOLD[9:8]=0, SQ_THRESH[7:4]=0x1
	103	*/
	104	wrl(USB_PHY_RX_CTRL, (rdl(USB_PHY_RX_CTRL) & ~0xc2003f0) \| 0xc0000010);
	105
	106	/*
	107	* GL# USB-3 GL# USB-9: USB PHY IVREF Control
	108	* PLLVDD12[1:0]=0x2, RXVDD[5:4]=0x3, Reserved[19]=0
	109	*/
	110	wrl(USB_PHY_IVREF_CTRL, (rdl(USB_PHY_IVREF_CTRL) & ~0x80003 ) \| 0x32);
	111
	112	/*
	113	* GL# USB-3 GL# USB-9: USB PHY Test Group Control
	114	* REG_FIFO_SQ_RST[15]=0
	115	*/
	116	wrl(USB_PHY_TST_GRP_CTRL, rdl(USB_PHY_TST_GRP_CTRL) & ~0x8000);
	117
	118	/*
	119	* Stop and reset controller
	120	*/
24677af8 TP	121	wrl(USB_CMD, rdl(USB_CMD) & ~USB_CMD_RUN);
	122	wrl(USB_CMD, rdl(USB_CMD) \| USB_CMD_RESET);
	123	while (rdl(USB_CMD) & USB_CMD_RESET);
e96ffe2f TP	124
	125	/*
	126	* GL# USB-5 Streaming disable REG_USB_MODE[4]=1
	127	* TBD: This need to be done after each reset!
	128	* GL# USB-4 Setup USB Host mode
	129	*/
24677af8	130	wrl(USB_MODE, USB_MODE_SDIS \| USB_MODE_HOST);
e96ffe2f TP	131	}
e96ffe2f TP	132
41ac7b3a	133	static void
92aecfa9	134	ehci_orion_conf_mbus_windows(struct usb_hcd *hcd,
63a9332b	135	const struct mbus_dram_target_info *dram)
92aecfa9 LB	136	{
	137	int i;
	138
	139	for (i = 0; i < 4; i++) {
	140	wrl(USB_WINDOW_CTRL(i), 0);
	141	wrl(USB_WINDOW_BASE(i), 0);
	142	}
	143
	144	for (i = 0; i < dram->num_cs; i++) {
63a9332b	145	const struct mbus_dram_window *cs = dram->cs + i;
92aecfa9 LB	146
	147	wrl(USB_WINDOW_CTRL(i), ((cs->size - 1) & 0xffff0000) \|
	148	(cs->mbus_attr << 8) \|
	149	(dram->mbus_dram_target_id << 4) \| 1);
	150	wrl(USB_WINDOW_BASE(i), cs->base);
	151	}
	152	}
	153
ac069662 GC	154	static const struct ehci_driver_overrides orion_overrides __initconst = {
	155	.extra_priv_size = sizeof(struct orion_ehci_hcd),
	156	};
	157
41ac7b3a	158	static int ehci_orion_drv_probe(struct platform_device *pdev)
e96ffe2f	159	{
d4f09e28	160	struct orion_ehci_data *pd = dev_get_platdata(&pdev->dev);
63a9332b	161	const struct mbus_dram_target_info *dram;
e96ffe2f TP	162	struct resource *res;
	163	struct usb_hcd *hcd;
	164	struct ehci_hcd *ehci;
	165	void __iomem *regs;
	166	int irq, err;
77dae54a	167	enum orion_ehci_phy_ver phy_version;
ac069662	168	struct orion_ehci_hcd *priv;
e96ffe2f TP	169
	170	if (usb_disabled())
	171	return -ENODEV;
	172
	173	pr_debug("Initializing Orion-SoC USB Host Controller\n");
	174
88bf6b3f	175	irq = platform_get_irq(pdev, 0);
e96ffe2f TP	176	if (irq <= 0) {
	177	dev_err(&pdev->dev,
	178	"Found HC with no IRQ. Check %s setup!\n",
7071a3ce	179	dev_name(&pdev->dev));
e96ffe2f	180	err = -ENODEV;
d8ea69e2	181	goto err;
e96ffe2f TP	182	}
e96ffe2f TP	183
77dae54a AL	184	/*
	185	* Right now device-tree probed devices don't get dma_mask
	186	* set. Since shared usb code relies on it, set it here for
	187	* now. Once we have dma capability bindings this can go away.
	188	*/
e1fd7341	189	err = dma_coerce_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(32));
22d9d8e8	190	if (err)
d8ea69e2	191	goto err;
77dae54a	192
69b89c60	193	res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
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
d445913c GC	224	priv->phy = devm_phy_optional_get(&pdev->dev, "usb");
	225	if (IS_ERR(priv->phy)) {
	226	err = PTR_ERR(priv->phy);
db1319e1 JG	227	if (err != -ENOSYS)
db1319e1 JG	228	goto err_phy_get;
d445913c GC	229	} else {
	230	err = phy_init(priv->phy);
	231	if (err)
	232	goto err_phy_init;
	233
	234	err = phy_power_on(priv->phy);
	235	if (err)
	236	goto err_phy_power_on;
	237	}
	238
92aecfa9 LB	239	/*
	240	* (Re-)program MBUS remapping windows if we are asked to.
	241	*/
63a9332b AL	242	dram = mv_mbus_dram_info();
	243	if (dram)
	244	ehci_orion_conf_mbus_windows(hcd, dram);
92aecfa9	245
e96ffe2f	246	/*
fb6f5529	247	* setup Orion USB controller.
e96ffe2f	248	*/
77dae54a AL	249	if (pdev->dev.of_node)
	250	phy_version = EHCI_PHY_NA;
	251	else
	252	phy_version = pd->phy_version;
	253
	254	switch (phy_version) {
fb6f5529 RS	255	case EHCI_PHY_NA: /* dont change USB phy settings */
	256	break;
	257	case EHCI_PHY_ORION:
	258	orion_usb_phy_v1_setup(hcd);
	259	break;
	260	case EHCI_PHY_DD:
	261	case EHCI_PHY_KW:
	262	default:
fb53e946	263	dev_warn(&pdev->dev, "USB phy version isn't supported.\n");
fb6f5529	264	}
e96ffe2f	265
b5dd18d8	266	err = usb_add_hcd(hcd, irq, IRQF_SHARED);
e96ffe2f	267	if (err)
d8ea69e2	268	goto err_add_hcd;
e96ffe2f	269
3c9740a1	270	device_wakeup_enable(hcd->self.controller);
e96ffe2f TP	271	return 0;
e96ffe2f TP	272
d8ea69e2	273	err_add_hcd:
d445913c GC	274	if (!IS_ERR(priv->phy))
	275	phy_power_off(priv->phy);
	276	err_phy_power_on:
	277	if (!IS_ERR(priv->phy))
	278	phy_exit(priv->phy);
	279	err_phy_init:
	280	err_phy_get:
ac069662 GC	281	if (!IS_ERR(priv->clk))
ac069662 GC	282	clk_disable_unprepare(priv->clk);
806f6e6b	283	usb_put_hcd(hcd);
d8ea69e2	284	err:
e96ffe2f	285	dev_err(&pdev->dev, "init %s fail, %d\n",
7071a3ce	286	dev_name(&pdev->dev), err);
e96ffe2f TP	287
	288	return err;
	289	}
	290
39d35681	291	static int ehci_orion_drv_remove(struct platform_device *pdev)
e96ffe2f TP	292	{
e96ffe2f TP	293	struct usb_hcd *hcd = platform_get_drvdata(pdev);
ac069662	294	struct orion_ehci_hcd *priv = hcd_to_orion_priv(hcd);
e96ffe2f TP	295
e96ffe2f TP	296	usb_remove_hcd(hcd);
ac069662	297
d445913c GC	298	if (!IS_ERR(priv->phy)) {
	299	phy_power_off(priv->phy);
	300	phy_exit(priv->phy);
	301	}
	302
ac069662 GC	303	if (!IS_ERR(priv->clk))
	304	clk_disable_unprepare(priv->clk);
	305
e96ffe2f TP	306	usb_put_hcd(hcd);
	307
	308	return 0;
	309	}
	310
59a609a9	311	static const struct of_device_id ehci_orion_dt_ids[] = {
77dae54a AL	312	{ .compatible = "marvell,orion-ehci", },
	313	{},
	314	};
	315	MODULE_DEVICE_TABLE(of, ehci_orion_dt_ids);
	316
e96ffe2f TP	317	static struct platform_driver ehci_orion_driver = {
e96ffe2f TP	318	.probe = ehci_orion_drv_probe,
39d35681	319	.remove = ehci_orion_drv_remove,
e96ffe2f	320	.shutdown = usb_hcd_platform_shutdown,
77dae54a AL	321	.driver = {
77dae54a AL	322	.name = "orion-ehci",
a703d7e2	323	.of_match_table = ehci_orion_dt_ids,
77dae54a	324	},
e96ffe2f	325	};
a76dd463 MG	326
	327	static int __init ehci_orion_init(void)
	328	{
	329	if (usb_disabled())
	330	return -ENODEV;
	331
	332	pr_info("%s: " DRIVER_DESC "\n", hcd_name);
	333
ac069662	334	ehci_init_driver(&ehci_orion_hc_driver, &orion_overrides);
a76dd463 MG	335	return platform_driver_register(&ehci_orion_driver);
	336	}
	337	module_init(ehci_orion_init);
	338
	339	static void __exit ehci_orion_cleanup(void)
	340	{
	341	platform_driver_unregister(&ehci_orion_driver);
	342	}
	343	module_exit(ehci_orion_cleanup);
	344
	345	MODULE_DESCRIPTION(DRIVER_DESC);
	346	MODULE_ALIAS("platform:orion-ehci");
	347	MODULE_AUTHOR("Tzachi Perelstein");
	348	MODULE_LICENSE("GPL v2");