[mirror_ubuntu-bionic-kernel.git] / drivers / usb / host / ehci-orion.c

// SPDX-License-Identifier: GPL-2.0
/*
 * drivers/usb/host/ehci-orion.c
 *
 * Tzachi Perelstein <tzachi@marvell.com>
 */

#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 USB_SBUSCFG		0x90

/* BAWR = BARD = 3 : Align read/write bursts packets larger than 128 bytes */
#define USB_SBUSCFG_BAWR_ALIGN_128B	(0x3 << 6)
#define USB_SBUSCFG_BARD_ALIGN_128B	(0x3 << 3)
/* AHBBRST = 3	   : Align AHB Burst to INCR16 (64 bytes) */
#define USB_SBUSCFG_AHBBRST_INCR16	(0x3 << 0)

#define USB_SBUSCFG_DEF_VAL (USB_SBUSCFG_BAWR_ALIGN_128B	\
			     | USB_SBUSCFG_BARD_ALIGN_128B	\
			     | USB_SBUSCFG_AHBBRST_INCR16)

#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 int ehci_orion_drv_reset(struct usb_hcd *hcd)
{
	struct device *dev = hcd->self.controller;
	int ret;

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

	/*
	 * For SoC without hlock, need to program sbuscfg value to guarantee
	 * AHB master's burst would not overrun or underrun FIFO.
	 *
	 * sbuscfg reg has to be set after usb controller reset, otherwise
	 * the value would be override to 0.
	 */
	if (of_device_is_compatible(dev->of_node, "marvell,armada-3700-ehci"))
		wrl(USB_SBUSCFG, USB_SBUSCFG_DEF_VAL);

	return ret;
}

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

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", },
	{ .compatible = "marvell,armada-3700-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
5fd54ace	1	// SPDX-License-Identifier: GPL-2.0
e96ffe2f TP	2	/*
	3	* drivers/usb/host/ehci-orion.c
	4	*
	5	* Tzachi Perelstein <tzachi@marvell.com>
e96ffe2f TP	6	*/
	7
	8	#include <linux/kernel.h>
	9	#include <linux/module.h>
	10	#include <linux/platform_device.h>
92aecfa9	11	#include <linux/mbus.h>
8c869eda	12	#include <linux/clk.h>
c02cecb9	13	#include <linux/platform_data/usb-ehci-orion.h>
77dae54a	14	#include <linux/of.h>
d445913c	15	#include <linux/phy/phy.h>
77dae54a AL	16	#include <linux/of_device.h>
77dae54a AL	17	#include <linux/of_irq.h>
a76dd463 MG	18	#include <linux/usb.h>
	19	#include <linux/usb/hcd.h>
	20	#include <linux/io.h>
	21	#include <linux/dma-mapping.h>
	22
	23	#include "ehci.h"
e96ffe2f	24
782614b8 MW	25	#define rdl(off) readl_relaxed(hcd->regs + (off))
782614b8 MW	26	#define wrl(off, val) writel_relaxed((val), hcd->regs + (off))
e96ffe2f	27
e96ffe2f	28	#define USB_CMD 0x140
24677af8 TP	29	#define USB_CMD_RUN BIT(0)
24677af8 TP	30	#define USB_CMD_RESET BIT(1)
e96ffe2f	31	#define USB_MODE 0x1a8
24677af8 TP	32	#define USB_MODE_MASK GENMASK(1, 0)
	33	#define USB_MODE_DEVICE 0x2
	34	#define USB_MODE_HOST 0x3
	35	#define USB_MODE_SDIS BIT(4)
92aecfa9 LB	36	#define USB_CAUSE 0x310
	37	#define USB_MASK 0x314
	38	#define USB_WINDOW_CTRL(i) (0x320 + ((i) << 4))
	39	#define USB_WINDOW_BASE(i) (0x324 + ((i) << 4))
e96ffe2f TP	40	#define USB_IPG 0x360
	41	#define USB_PHY_PWR_CTRL 0x400
	42	#define USB_PHY_TX_CTRL 0x420
	43	#define USB_PHY_RX_CTRL 0x430
	44	#define USB_PHY_IVREF_CTRL 0x440
	45	#define USB_PHY_TST_GRP_CTRL 0x450
	46
356c5007 HJ	47	#define USB_SBUSCFG 0x90
	48
	49	/* BAWR = BARD = 3 : Align read/write bursts packets larger than 128 bytes */
	50	#define USB_SBUSCFG_BAWR_ALIGN_128B (0x3 << 6)
	51	#define USB_SBUSCFG_BARD_ALIGN_128B (0x3 << 3)
	52	/* AHBBRST = 3 : Align AHB Burst to INCR16 (64 bytes) */
	53	#define USB_SBUSCFG_AHBBRST_INCR16 (0x3 << 0)
	54
	55	#define USB_SBUSCFG_DEF_VAL (USB_SBUSCFG_BAWR_ALIGN_128B \
	56	\| USB_SBUSCFG_BARD_ALIGN_128B \
	57	\| USB_SBUSCFG_AHBBRST_INCR16)
	58
a76dd463 MG	59	#define DRIVER_DESC "EHCI orion driver"
a76dd463 MG	60
ac069662 GC	61	#define hcd_to_orion_priv(h) ((struct orion_ehci_hcd *)hcd_to_ehci(h)->priv)
	62
	63	struct orion_ehci_hcd {
	64	struct clk *clk;
d445913c	65	struct phy *phy;
ac069662 GC	66	};
ac069662 GC	67
a76dd463 MG	68	static const char hcd_name[] = "ehci-orion";
	69
	70	static struct hc_driver __read_mostly ehci_orion_hc_driver;
	71
e96ffe2f TP	72	/*
	73	* Implement Orion USB controller specification guidelines
	74	*/
fb6f5529	75	static void orion_usb_phy_v1_setup(struct usb_hcd *hcd)
e96ffe2f	76	{
fb6f5529	77	/* The below GLs are according to the Orion Errata document */
e96ffe2f TP	78	/*
	79	* Clear interrupt cause and mask
	80	*/
	81	wrl(USB_CAUSE, 0);
	82	wrl(USB_MASK, 0);
	83
	84	/*
	85	* Reset controller
	86	*/
24677af8 TP	87	wrl(USB_CMD, rdl(USB_CMD) \| USB_CMD_RESET);
24677af8 TP	88	while (rdl(USB_CMD) & USB_CMD_RESET);
e96ffe2f TP	89
	90	/*
	91	* GL# USB-10: Set IPG for non start of frame packets
	92	* Bits[14:8]=0xc
	93	*/
	94	wrl(USB_IPG, (rdl(USB_IPG) & ~0x7f00) \| 0xc00);
	95
	96	/*
	97	* GL# USB-9: USB 2.0 Power Control
	98	* BG_VSEL[7:6]=0x1
	99	*/
	100	wrl(USB_PHY_PWR_CTRL, (rdl(USB_PHY_PWR_CTRL) & ~0xc0)\| 0x40);
	101
	102	/*
	103	* GL# USB-1: USB PHY Tx Control - force calibration to '8'
	104	* TXDATA_BLOCK_EN[21]=0x1, EXT_RCAL_EN[13]=0x1, IMP_CAL[6:3]=0x8
	105	*/
	106	wrl(USB_PHY_TX_CTRL, (rdl(USB_PHY_TX_CTRL) & ~0x78) \| 0x202040);
	107
	108	/*
	109	* GL# USB-3 GL# USB-9: USB PHY Rx Control
	110	* RXDATA_BLOCK_LENGHT[31:30]=0x3, EDGE_DET_SEL[27:26]=0,
	111	* CDR_FASTLOCK_EN[21]=0, DISCON_THRESHOLD[9:8]=0, SQ_THRESH[7:4]=0x1
	112	*/
	113	wrl(USB_PHY_RX_CTRL, (rdl(USB_PHY_RX_CTRL) & ~0xc2003f0) \| 0xc0000010);
	114
	115	/*
	116	* GL# USB-3 GL# USB-9: USB PHY IVREF Control
	117	* PLLVDD12[1:0]=0x2, RXVDD[5:4]=0x3, Reserved[19]=0
	118	*/
	119	wrl(USB_PHY_IVREF_CTRL, (rdl(USB_PHY_IVREF_CTRL) & ~0x80003 ) \| 0x32);
	120
	121	/*
	122	* GL# USB-3 GL# USB-9: USB PHY Test Group Control
	123	* REG_FIFO_SQ_RST[15]=0
	124	*/
	125	wrl(USB_PHY_TST_GRP_CTRL, rdl(USB_PHY_TST_GRP_CTRL) & ~0x8000);
	126
	127	/*
	128	* Stop and reset controller
	129	*/
24677af8 TP	130	wrl(USB_CMD, rdl(USB_CMD) & ~USB_CMD_RUN);
	131	wrl(USB_CMD, rdl(USB_CMD) \| USB_CMD_RESET);
	132	while (rdl(USB_CMD) & USB_CMD_RESET);
e96ffe2f TP	133
	134	/*
	135	* GL# USB-5 Streaming disable REG_USB_MODE[4]=1
	136	* TBD: This need to be done after each reset!
	137	* GL# USB-4 Setup USB Host mode
	138	*/
24677af8	139	wrl(USB_MODE, USB_MODE_SDIS \| USB_MODE_HOST);
e96ffe2f TP	140	}
e96ffe2f TP	141
41ac7b3a	142	static void
92aecfa9	143	ehci_orion_conf_mbus_windows(struct usb_hcd *hcd,
63a9332b	144	const struct mbus_dram_target_info *dram)
92aecfa9 LB	145	{
	146	int i;
	147
	148	for (i = 0; i < 4; i++) {
	149	wrl(USB_WINDOW_CTRL(i), 0);
	150	wrl(USB_WINDOW_BASE(i), 0);
	151	}
	152
	153	for (i = 0; i < dram->num_cs; i++) {
63a9332b	154	const struct mbus_dram_window *cs = dram->cs + i;
92aecfa9 LB	155
	156	wrl(USB_WINDOW_CTRL(i), ((cs->size - 1) & 0xffff0000) \|
	157	(cs->mbus_attr << 8) \|
	158	(dram->mbus_dram_target_id << 4) \| 1);
	159	wrl(USB_WINDOW_BASE(i), cs->base);
	160	}
	161	}
	162
356c5007 HJ	163	static int ehci_orion_drv_reset(struct usb_hcd *hcd)
	164	{
	165	struct device *dev = hcd->self.controller;
	166	int ret;
	167
	168	ret = ehci_setup(hcd);
	169	if (ret)
	170	return ret;
	171
	172	/*
	173	* For SoC without hlock, need to program sbuscfg value to guarantee
	174	* AHB master's burst would not overrun or underrun FIFO.
	175	*
	176	* sbuscfg reg has to be set after usb controller reset, otherwise
	177	* the value would be override to 0.
	178	*/
	179	if (of_device_is_compatible(dev->of_node, "marvell,armada-3700-ehci"))
	180	wrl(USB_SBUSCFG, USB_SBUSCFG_DEF_VAL);
	181
	182	return ret;
	183	}
	184
ac069662 GC	185	static const struct ehci_driver_overrides orion_overrides __initconst = {
ac069662 GC	186	.extra_priv_size = sizeof(struct orion_ehci_hcd),
356c5007	187	.reset = ehci_orion_drv_reset,
ac069662 GC	188	};
ac069662 GC	189
41ac7b3a	190	static int ehci_orion_drv_probe(struct platform_device *pdev)
e96ffe2f	191	{
d4f09e28	192	struct orion_ehci_data *pd = dev_get_platdata(&pdev->dev);
63a9332b	193	const struct mbus_dram_target_info *dram;
e96ffe2f TP	194	struct resource *res;
	195	struct usb_hcd *hcd;
	196	struct ehci_hcd *ehci;
	197	void __iomem *regs;
	198	int irq, err;
77dae54a	199	enum orion_ehci_phy_ver phy_version;
ac069662	200	struct orion_ehci_hcd *priv;
e96ffe2f TP	201
	202	if (usb_disabled())
	203	return -ENODEV;
	204
	205	pr_debug("Initializing Orion-SoC USB Host Controller\n");
	206
88bf6b3f	207	irq = platform_get_irq(pdev, 0);
e96ffe2f TP	208	if (irq <= 0) {
	209	dev_err(&pdev->dev,
	210	"Found HC with no IRQ. Check %s setup!\n",
7071a3ce	211	dev_name(&pdev->dev));
e96ffe2f	212	err = -ENODEV;
d8ea69e2	213	goto err;
e96ffe2f TP	214	}
e96ffe2f TP	215
77dae54a AL	216	/*
	217	* Right now device-tree probed devices don't get dma_mask
	218	* set. Since shared usb code relies on it, set it here for
	219	* now. Once we have dma capability bindings this can go away.
	220	*/
e1fd7341	221	err = dma_coerce_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(32));
22d9d8e8	222	if (err)
d8ea69e2	223	goto err;
77dae54a	224
69b89c60	225	res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
806f6e6b JH	226	regs = devm_ioremap_resource(&pdev->dev, res);
	227	if (IS_ERR(regs)) {
	228	err = PTR_ERR(regs);
d8ea69e2	229	goto err;
e96ffe2f TP	230	}
e96ffe2f TP	231
e96ffe2f	232	hcd = usb_create_hcd(&ehci_orion_hc_driver,
7071a3ce	233	&pdev->dev, dev_name(&pdev->dev));
e96ffe2f TP	234	if (!hcd) {
e96ffe2f TP	235	err = -ENOMEM;
ac069662	236	goto err;
e96ffe2f TP	237	}
	238
	239	hcd->rsrc_start = res->start;
5672b7e6	240	hcd->rsrc_len = resource_size(res);
e96ffe2f TP	241	hcd->regs = regs;
	242
	243	ehci = hcd_to_ehci(hcd);
	244	ehci->caps = hcd->regs + 0x100;
a8e51775	245	hcd->has_tt = 1;
e96ffe2f	246
ac069662 GC	247	priv = hcd_to_orion_priv(hcd);
	248	/*
	249	* Not all platforms can gate the clock, so it is not an error if
	250	* the clock does not exists.
	251	*/
	252	priv->clk = devm_clk_get(&pdev->dev, NULL);
	253	if (!IS_ERR(priv->clk))
	254	clk_prepare_enable(priv->clk);
	255
d445913c GC	256	priv->phy = devm_phy_optional_get(&pdev->dev, "usb");
	257	if (IS_ERR(priv->phy)) {
	258	err = PTR_ERR(priv->phy);
db1319e1 JG	259	if (err != -ENOSYS)
db1319e1 JG	260	goto err_phy_get;
d445913c GC	261	} else {
	262	err = phy_init(priv->phy);
	263	if (err)
	264	goto err_phy_init;
	265
	266	err = phy_power_on(priv->phy);
	267	if (err)
	268	goto err_phy_power_on;
	269	}
	270
92aecfa9 LB	271	/*
	272	* (Re-)program MBUS remapping windows if we are asked to.
	273	*/
63a9332b AL	274	dram = mv_mbus_dram_info();
	275	if (dram)
	276	ehci_orion_conf_mbus_windows(hcd, dram);
92aecfa9	277
e96ffe2f	278	/*
fb6f5529	279	* setup Orion USB controller.
e96ffe2f	280	*/
77dae54a AL	281	if (pdev->dev.of_node)
	282	phy_version = EHCI_PHY_NA;
	283	else
	284	phy_version = pd->phy_version;
	285
	286	switch (phy_version) {
fb6f5529 RS	287	case EHCI_PHY_NA: /* dont change USB phy settings */
	288	break;
	289	case EHCI_PHY_ORION:
	290	orion_usb_phy_v1_setup(hcd);
	291	break;
	292	case EHCI_PHY_DD:
	293	case EHCI_PHY_KW:
	294	default:
fb53e946	295	dev_warn(&pdev->dev, "USB phy version isn't supported.\n");
fb6f5529	296	}
e96ffe2f	297
b5dd18d8	298	err = usb_add_hcd(hcd, irq, IRQF_SHARED);
e96ffe2f	299	if (err)
d8ea69e2	300	goto err_add_hcd;
e96ffe2f	301
3c9740a1	302	device_wakeup_enable(hcd->self.controller);
e96ffe2f TP	303	return 0;
e96ffe2f TP	304
d8ea69e2	305	err_add_hcd:
d445913c GC	306	if (!IS_ERR(priv->phy))
	307	phy_power_off(priv->phy);
	308	err_phy_power_on:
	309	if (!IS_ERR(priv->phy))
	310	phy_exit(priv->phy);
	311	err_phy_init:
	312	err_phy_get:
ac069662 GC	313	if (!IS_ERR(priv->clk))
ac069662 GC	314	clk_disable_unprepare(priv->clk);
806f6e6b	315	usb_put_hcd(hcd);
d8ea69e2	316	err:
e96ffe2f	317	dev_err(&pdev->dev, "init %s fail, %d\n",
7071a3ce	318	dev_name(&pdev->dev), err);
e96ffe2f TP	319
	320	return err;
	321	}
	322
39d35681	323	static int ehci_orion_drv_remove(struct platform_device *pdev)
e96ffe2f TP	324	{
e96ffe2f TP	325	struct usb_hcd *hcd = platform_get_drvdata(pdev);
ac069662	326	struct orion_ehci_hcd *priv = hcd_to_orion_priv(hcd);
e96ffe2f TP	327
e96ffe2f TP	328	usb_remove_hcd(hcd);
ac069662	329
d445913c GC	330	if (!IS_ERR(priv->phy)) {
	331	phy_power_off(priv->phy);
	332	phy_exit(priv->phy);
	333	}
	334
ac069662 GC	335	if (!IS_ERR(priv->clk))
	336	clk_disable_unprepare(priv->clk);
	337
e96ffe2f TP	338	usb_put_hcd(hcd);
	339
	340	return 0;
	341	}
	342
59a609a9	343	static const struct of_device_id ehci_orion_dt_ids[] = {
77dae54a	344	{ .compatible = "marvell,orion-ehci", },
356c5007	345	{ .compatible = "marvell,armada-3700-ehci", },
77dae54a AL	346	{},
	347	};
	348	MODULE_DEVICE_TABLE(of, ehci_orion_dt_ids);
	349
e96ffe2f TP	350	static struct platform_driver ehci_orion_driver = {
e96ffe2f TP	351	.probe = ehci_orion_drv_probe,
39d35681	352	.remove = ehci_orion_drv_remove,
e96ffe2f	353	.shutdown = usb_hcd_platform_shutdown,
77dae54a AL	354	.driver = {
77dae54a AL	355	.name = "orion-ehci",
a703d7e2	356	.of_match_table = ehci_orion_dt_ids,
77dae54a	357	},
e96ffe2f	358	};
a76dd463 MG	359
	360	static int __init ehci_orion_init(void)
	361	{
	362	if (usb_disabled())
	363	return -ENODEV;
	364
	365	pr_info("%s: " DRIVER_DESC "\n", hcd_name);
	366
ac069662	367	ehci_init_driver(&ehci_orion_hc_driver, &orion_overrides);
a76dd463 MG	368	return platform_driver_register(&ehci_orion_driver);
	369	}
	370	module_init(ehci_orion_init);
	371
	372	static void __exit ehci_orion_cleanup(void)
	373	{
	374	platform_driver_unregister(&ehci_orion_driver);
	375	}
	376	module_exit(ehci_orion_cleanup);
	377
	378	MODULE_DESCRIPTION(DRIVER_DESC);
	379	MODULE_ALIAS("platform:orion-ehci");
	380	MODULE_AUTHOR("Tzachi Perelstein");
	381	MODULE_LICENSE("GPL v2");