[linux-block.git] / drivers / usb / host / xhci-plat.c

// SPDX-License-Identifier: GPL-2.0
/*
 * xhci-plat.c - xHCI host controller driver platform Bus Glue.
 *
 * Copyright (C) 2012 Texas Instruments Incorporated - http://www.ti.com
 * Author: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
 *
 * A lot of code borrowed from the Linux xHCI driver.
 */

#include <linux/clk.h>
#include <linux/dma-mapping.h>
#include <linux/module.h>
#include <linux/pci.h>
#include <linux/of.h>
#include <linux/of_device.h>
#include <linux/platform_device.h>
#include <linux/usb/phy.h>
#include <linux/slab.h>
#include <linux/acpi.h>

#include "xhci.h"
#include "xhci-plat.h"
#include "xhci-mvebu.h"
#include "xhci-rcar.h"

static struct hc_driver __read_mostly xhci_plat_hc_driver;

static int xhci_plat_setup(struct usb_hcd *hcd);
static int xhci_plat_start(struct usb_hcd *hcd);

static const struct xhci_driver_overrides xhci_plat_overrides __initconst = {
	.extra_priv_size = sizeof(struct xhci_plat_priv),
	.reset = xhci_plat_setup,
	.start = xhci_plat_start,
};

static void xhci_priv_plat_start(struct usb_hcd *hcd)
{
	struct xhci_plat_priv *priv = hcd_to_xhci_priv(hcd);

	if (priv->plat_start)
		priv->plat_start(hcd);
}

static int xhci_priv_init_quirk(struct usb_hcd *hcd)
{
	struct xhci_plat_priv *priv = hcd_to_xhci_priv(hcd);

	if (!priv->init_quirk)
		return 0;

	return priv->init_quirk(hcd);
}

static int xhci_priv_resume_quirk(struct usb_hcd *hcd)
{
	struct xhci_plat_priv *priv = hcd_to_xhci_priv(hcd);

	if (!priv->resume_quirk)
		return 0;

	return priv->resume_quirk(hcd);
}

static void xhci_plat_quirks(struct device *dev, struct xhci_hcd *xhci)
{
	/*
	 * As of now platform drivers don't provide MSI support so we ensure
	 * here that the generic code does not try to make a pci_dev from our
	 * dev struct in order to setup MSI
	 */
	xhci->quirks |= XHCI_PLAT;
}

/* called during probe() after chip reset completes */
static int xhci_plat_setup(struct usb_hcd *hcd)
{
	int ret;


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

	return xhci_gen_setup(hcd, xhci_plat_quirks);
}

static int xhci_plat_start(struct usb_hcd *hcd)
{
	xhci_priv_plat_start(hcd);
	return xhci_run(hcd);
}

#ifdef CONFIG_OF
static const struct xhci_plat_priv xhci_plat_marvell_armada = {
	.init_quirk = xhci_mvebu_mbus_init_quirk,
};

static const struct xhci_plat_priv xhci_plat_renesas_rcar_gen2 = {
	.firmware_name = XHCI_RCAR_FIRMWARE_NAME_V1,
	.init_quirk = xhci_rcar_init_quirk,
	.plat_start = xhci_rcar_start,
	.resume_quirk = xhci_rcar_resume_quirk,
};

static const struct xhci_plat_priv xhci_plat_renesas_rcar_gen3 = {
	.init_quirk = xhci_rcar_init_quirk,
	.plat_start = xhci_rcar_start,
	.resume_quirk = xhci_rcar_resume_quirk,
};

static const struct of_device_id usb_xhci_of_match[] = {
	{
		.compatible = "generic-xhci",
	}, {
		.compatible = "xhci-platform",
	}, {
		.compatible = "marvell,armada-375-xhci",
		.data = &xhci_plat_marvell_armada,
	}, {
		.compatible = "marvell,armada-380-xhci",
		.data = &xhci_plat_marvell_armada,
	}, {
		.compatible = "renesas,xhci-r8a7790",
		.data = &xhci_plat_renesas_rcar_gen2,
	}, {
		.compatible = "renesas,xhci-r8a7791",
		.data = &xhci_plat_renesas_rcar_gen2,
	}, {
		.compatible = "renesas,xhci-r8a7793",
		.data = &xhci_plat_renesas_rcar_gen2,
	}, {
		.compatible = "renesas,xhci-r8a7795",
		.data = &xhci_plat_renesas_rcar_gen3,
	}, {
		.compatible = "renesas,xhci-r8a7796",
		.data = &xhci_plat_renesas_rcar_gen3,
	}, {
		.compatible = "renesas,rcar-gen2-xhci",
		.data = &xhci_plat_renesas_rcar_gen2,
	}, {
		.compatible = "renesas,rcar-gen3-xhci",
		.data = &xhci_plat_renesas_rcar_gen3,
	},
	{},
};
MODULE_DEVICE_TABLE(of, usb_xhci_of_match);
#endif

static int xhci_plat_probe(struct platform_device *pdev)
{
	const struct xhci_plat_priv *priv_match;
	const struct hc_driver	*driver;
	struct device		*sysdev;
	struct xhci_hcd		*xhci;
	struct resource         *res;
	struct usb_hcd		*hcd;
	struct clk              *clk;
	int			ret;
	int			irq;

	if (usb_disabled())
		return -ENODEV;

	driver = &xhci_plat_hc_driver;

	irq = platform_get_irq(pdev, 0);
	if (irq < 0)
		return irq;

	/*
	 * sysdev must point to a device that is known to the system firmware
	 * or PCI hardware. We handle these three cases here:
	 * 1. xhci_plat comes from firmware
	 * 2. xhci_plat is child of a device from firmware (dwc3-plat)
	 * 3. xhci_plat is grandchild of a pci device (dwc3-pci)
	 */
	for (sysdev = &pdev->dev; sysdev; sysdev = sysdev->parent) {
		if (is_of_node(sysdev->fwnode) ||
			is_acpi_device_node(sysdev->fwnode))
			break;
#ifdef CONFIG_PCI
		else if (sysdev->bus == &pci_bus_type)
			break;
#endif
	}

	if (!sysdev)
		sysdev = &pdev->dev;

	/* Try to set 64-bit DMA first */
	if (WARN_ON(!sysdev->dma_mask))
		/* Platform did not initialize dma_mask */
		ret = dma_coerce_mask_and_coherent(sysdev,
						   DMA_BIT_MASK(64));
	else
		ret = dma_set_mask_and_coherent(sysdev, DMA_BIT_MASK(64));

	/* If seting 64-bit DMA mask fails, fall back to 32-bit DMA mask */
	if (ret) {
		ret = dma_set_mask_and_coherent(sysdev, DMA_BIT_MASK(32));
		if (ret)
			return ret;
	}

	pm_runtime_set_active(&pdev->dev);
	pm_runtime_enable(&pdev->dev);
	pm_runtime_get_noresume(&pdev->dev);

	hcd = __usb_create_hcd(driver, sysdev, &pdev->dev,
			       dev_name(&pdev->dev), NULL);
	if (!hcd) {
		ret = -ENOMEM;
		goto disable_runtime;
	}

	res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
	hcd->regs = devm_ioremap_resource(&pdev->dev, res);
	if (IS_ERR(hcd->regs)) {
		ret = PTR_ERR(hcd->regs);
		goto put_hcd;
	}

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

	/*
	 * Not all platforms have a clk so it is not an error if the
	 * clock does not exists.
	 */
	clk = devm_clk_get(&pdev->dev, NULL);
	if (!IS_ERR(clk)) {
		ret = clk_prepare_enable(clk);
		if (ret)
			goto put_hcd;
	} else if (PTR_ERR(clk) == -EPROBE_DEFER) {
		ret = -EPROBE_DEFER;
		goto put_hcd;
	}

	xhci = hcd_to_xhci(hcd);
	priv_match = of_device_get_match_data(&pdev->dev);
	if (priv_match) {
		struct xhci_plat_priv *priv = hcd_to_xhci_priv(hcd);

		/* Just copy data for now */
		if (priv_match)
			*priv = *priv_match;
	}

	device_wakeup_enable(hcd->self.controller);

	xhci->clk = clk;
	xhci->main_hcd = hcd;
	xhci->shared_hcd = __usb_create_hcd(driver, sysdev, &pdev->dev,
			dev_name(&pdev->dev), hcd);
	if (!xhci->shared_hcd) {
		ret = -ENOMEM;
		goto disable_clk;
	}

	if (device_property_read_bool(sysdev, "usb2-lpm-disable"))
		xhci->quirks |= XHCI_HW_LPM_DISABLE;

	if (device_property_read_bool(sysdev, "usb3-lpm-capable"))
		xhci->quirks |= XHCI_LPM_SUPPORT;

	if (device_property_read_bool(&pdev->dev, "quirk-broken-port-ped"))
		xhci->quirks |= XHCI_BROKEN_PORT_PED;

	/* imod_interval is the interrupt moderation value in nanoseconds. */
	xhci->imod_interval = 40000;
	device_property_read_u32(sysdev, "imod-interval-ns",
				 &xhci->imod_interval);

	hcd->usb_phy = devm_usb_get_phy_by_phandle(sysdev, "usb-phy", 0);
	if (IS_ERR(hcd->usb_phy)) {
		ret = PTR_ERR(hcd->usb_phy);
		if (ret == -EPROBE_DEFER)
			goto put_usb3_hcd;
		hcd->usb_phy = NULL;
	} else {
		ret = usb_phy_init(hcd->usb_phy);
		if (ret)
			goto put_usb3_hcd;
	}

	ret = usb_add_hcd(hcd, irq, IRQF_SHARED);
	if (ret)
		goto disable_usb_phy;

	if (HCC_MAX_PSA(xhci->hcc_params) >= 4)
		xhci->shared_hcd->can_do_streams = 1;

	ret = usb_add_hcd(xhci->shared_hcd, irq, IRQF_SHARED);
	if (ret)
		goto dealloc_usb2_hcd;

	device_enable_async_suspend(&pdev->dev);
	pm_runtime_put_noidle(&pdev->dev);

	/*
	 * Prevent runtime pm from being on as default, users should enable
	 * runtime pm using power/control in sysfs.
	 */
	pm_runtime_forbid(&pdev->dev);

	return 0;


dealloc_usb2_hcd:
	usb_remove_hcd(hcd);

disable_usb_phy:
	usb_phy_shutdown(hcd->usb_phy);

put_usb3_hcd:
	usb_put_hcd(xhci->shared_hcd);

disable_clk:
	if (!IS_ERR(clk))
		clk_disable_unprepare(clk);

put_hcd:
	usb_put_hcd(hcd);

disable_runtime:
	pm_runtime_put_noidle(&pdev->dev);
	pm_runtime_disable(&pdev->dev);

	return ret;
}

static int xhci_plat_remove(struct platform_device *dev)
{
	struct usb_hcd	*hcd = platform_get_drvdata(dev);
	struct xhci_hcd	*xhci = hcd_to_xhci(hcd);
	struct clk *clk = xhci->clk;

	xhci->xhc_state |= XHCI_STATE_REMOVING;

	usb_remove_hcd(xhci->shared_hcd);
	usb_phy_shutdown(hcd->usb_phy);

	usb_remove_hcd(hcd);
	usb_put_hcd(xhci->shared_hcd);

	if (!IS_ERR(clk))
		clk_disable_unprepare(clk);
	usb_put_hcd(hcd);

	pm_runtime_set_suspended(&dev->dev);
	pm_runtime_disable(&dev->dev);

	return 0;
}

static int __maybe_unused xhci_plat_suspend(struct device *dev)
{
	struct usb_hcd	*hcd = dev_get_drvdata(dev);
	struct xhci_hcd	*xhci = hcd_to_xhci(hcd);
	int ret;

	/*
	 * xhci_suspend() needs `do_wakeup` to know whether host is allowed
	 * to do wakeup during suspend. Since xhci_plat_suspend is currently
	 * only designed for system suspend, device_may_wakeup() is enough
	 * to dertermine whether host is allowed to do wakeup. Need to
	 * reconsider this when xhci_plat_suspend enlarges its scope, e.g.,
	 * also applies to runtime suspend.
	 */
	ret = xhci_suspend(xhci, device_may_wakeup(dev));

	if (!device_may_wakeup(dev) && !IS_ERR(xhci->clk))
		clk_disable_unprepare(xhci->clk);

	return ret;
}

static int __maybe_unused xhci_plat_resume(struct device *dev)
{
	struct usb_hcd	*hcd = dev_get_drvdata(dev);
	struct xhci_hcd	*xhci = hcd_to_xhci(hcd);
	int ret;

	if (!device_may_wakeup(dev) && !IS_ERR(xhci->clk))
		clk_prepare_enable(xhci->clk);

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

	return xhci_resume(xhci, 0);
}

static int __maybe_unused xhci_plat_runtime_suspend(struct device *dev)
{
	struct usb_hcd  *hcd = dev_get_drvdata(dev);
	struct xhci_hcd *xhci = hcd_to_xhci(hcd);

	return xhci_suspend(xhci, true);
}

static int __maybe_unused xhci_plat_runtime_resume(struct device *dev)
{
	struct usb_hcd  *hcd = dev_get_drvdata(dev);
	struct xhci_hcd *xhci = hcd_to_xhci(hcd);

	return xhci_resume(xhci, 0);
}

static const struct dev_pm_ops xhci_plat_pm_ops = {
	SET_SYSTEM_SLEEP_PM_OPS(xhci_plat_suspend, xhci_plat_resume)

	SET_RUNTIME_PM_OPS(xhci_plat_runtime_suspend,
			   xhci_plat_runtime_resume,
			   NULL)
};

static const struct acpi_device_id usb_xhci_acpi_match[] = {
	/* XHCI-compliant USB Controller */
	{ "PNP0D10", },
	{ }
};
MODULE_DEVICE_TABLE(acpi, usb_xhci_acpi_match);

static struct platform_driver usb_xhci_driver = {
	.probe	= xhci_plat_probe,
	.remove	= xhci_plat_remove,
	.shutdown	= usb_hcd_platform_shutdown,
	.driver	= {
		.name = "xhci-hcd",
		.pm = &xhci_plat_pm_ops,
		.of_match_table = of_match_ptr(usb_xhci_of_match),
		.acpi_match_table = ACPI_PTR(usb_xhci_acpi_match),
	},
};
MODULE_ALIAS("platform:xhci-hcd");

static int __init xhci_plat_init(void)
{
	xhci_init_driver(&xhci_plat_hc_driver, &xhci_plat_overrides);
	return platform_driver_register(&usb_xhci_driver);
}
module_init(xhci_plat_init);

static void __exit xhci_plat_exit(void)
{
	platform_driver_unregister(&usb_xhci_driver);
}
module_exit(xhci_plat_exit);

MODULE_DESCRIPTION("xHCI Platform Host Controller Driver");
MODULE_LICENSE("GPL");
Commit	Line	Data
5fd54ace	1	// SPDX-License-Identifier: GPL-2.0
3429e91a SAS	2	/*
	3	* xhci-plat.c - xHCI host controller driver platform Bus Glue.
	4	*
	5	* Copyright (C) 2012 Texas Instruments Incorporated - http://www.ti.com
	6	* Author: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
	7	*
	8	* A lot of code borrowed from the Linux xHCI driver.
3429e91a SAS	9	*/
3429e91a SAS	10
4718c177	11	#include <linux/clk.h>
48157bb9	12	#include <linux/dma-mapping.h>
3429e91a	13	#include <linux/module.h>
4c39d4b9	14	#include <linux/pci.h>
1fe6c452	15	#include <linux/of.h>
2847d242	16	#include <linux/of_device.h>
48157bb9	17	#include <linux/platform_device.h>
7b8ef22e	18	#include <linux/usb/phy.h>
48157bb9	19	#include <linux/slab.h>
579085b5	20	#include <linux/acpi.h>
3429e91a SAS	21
3429e91a SAS	22	#include "xhci.h"
4efb2f69	23	#include "xhci-plat.h"
97374792	24	#include "xhci-mvebu.h"
4ac8918f	25	#include "xhci-rcar.h"
3429e91a	26
1885d9a3 AB	27	static struct hc_driver __read_mostly xhci_plat_hc_driver;
1885d9a3 AB	28
cd33a321 RQ	29	static int xhci_plat_setup(struct usb_hcd *hcd);
	30	static int xhci_plat_start(struct usb_hcd *hcd);
	31
	32	static const struct xhci_driver_overrides xhci_plat_overrides __initconst = {
4efb2f69	33	.extra_priv_size = sizeof(struct xhci_plat_priv),
cd33a321 RQ	34	.reset = xhci_plat_setup,
	35	.start = xhci_plat_start,
	36	};
	37
b1c127ae	38	static void xhci_priv_plat_start(struct usb_hcd *hcd)
3429e91a	39	{
b1c127ae FB	40	struct xhci_plat_priv *priv = hcd_to_xhci_priv(hcd);
	41
	42	if (priv->plat_start)
	43	priv->plat_start(hcd);
	44	}
	45
	46	static int xhci_priv_init_quirk(struct usb_hcd *hcd)
	47	{
	48	struct xhci_plat_priv *priv = hcd_to_xhci_priv(hcd);
	49
	50	if (!priv->init_quirk)
	51	return 0;
	52
	53	return priv->init_quirk(hcd);
	54	}
5ad3b03e	55
98c0a3ff YS	56	static int xhci_priv_resume_quirk(struct usb_hcd *hcd)
	57	{
	58	struct xhci_plat_priv *priv = hcd_to_xhci_priv(hcd);
	59
	60	if (!priv->resume_quirk)
	61	return 0;
	62
	63	return priv->resume_quirk(hcd);
	64	}
	65
b1c127ae FB	66	static void xhci_plat_quirks(struct device dev, struct xhci_hcd xhci)
b1c127ae FB	67	{
3429e91a SAS	68	/*
	69	* As of now platform drivers don't provide MSI support so we ensure
	70	* here that the generic code does not try to make a pci_dev from our
	71	* dev struct in order to setup MSI
	72	*/
52fb6125	73	xhci->quirks \|= XHCI_PLAT;
3429e91a SAS	74	}
	75
	76	/* called during probe() after chip reset completes */
	77	static int xhci_plat_setup(struct usb_hcd *hcd)
	78	{
4ac8918f YS	79	int ret;
4ac8918f YS	80
4ac8918f	81
b1c127ae FB	82	ret = xhci_priv_init_quirk(hcd);
	83	if (ret)
	84	return ret;
3bdb263d	85
3429e91a SAS	86	return xhci_gen_setup(hcd, xhci_plat_quirks);
	87	}
	88
94adcdce YS	89	static int xhci_plat_start(struct usb_hcd *hcd)
94adcdce YS	90	{
b1c127ae	91	xhci_priv_plat_start(hcd);
94adcdce YS	92	return xhci_run(hcd);
	93	}
	94
4efb2f69 YS	95	#ifdef CONFIG_OF
4efb2f69 YS	96	static const struct xhci_plat_priv xhci_plat_marvell_armada = {
b1c127ae	97	.init_quirk = xhci_mvebu_mbus_init_quirk,
4efb2f69 YS	98	};
	99
	100	static const struct xhci_plat_priv xhci_plat_renesas_rcar_gen2 = {
9bf9d9d6	101	.firmware_name = XHCI_RCAR_FIRMWARE_NAME_V1,
b1c127ae FB	102	.init_quirk = xhci_rcar_init_quirk,
b1c127ae FB	103	.plat_start = xhci_rcar_start,
435cc113	104	.resume_quirk = xhci_rcar_resume_quirk,
4efb2f69 YS	105	};
4efb2f69 YS	106
526a240f	107	static const struct xhci_plat_priv xhci_plat_renesas_rcar_gen3 = {
3f1dae6b YS	108	.init_quirk = xhci_rcar_init_quirk,
3f1dae6b YS	109	.plat_start = xhci_rcar_start,
435cc113	110	.resume_quirk = xhci_rcar_resume_quirk,
3f1dae6b YS	111	};
3f1dae6b YS	112
4efb2f69 YS	113	static const struct of_device_id usb_xhci_of_match[] = {
	114	{
	115	.compatible = "generic-xhci",
	116	}, {
	117	.compatible = "xhci-platform",
	118	}, {
	119	.compatible = "marvell,armada-375-xhci",
	120	.data = &xhci_plat_marvell_armada,
	121	}, {
	122	.compatible = "marvell,armada-380-xhci",
	123	.data = &xhci_plat_marvell_armada,
	124	}, {
	125	.compatible = "renesas,xhci-r8a7790",
	126	.data = &xhci_plat_renesas_rcar_gen2,
	127	}, {
	128	.compatible = "renesas,xhci-r8a7791",
	129	.data = &xhci_plat_renesas_rcar_gen2,
82487b71 YS	130	}, {
	131	.compatible = "renesas,xhci-r8a7793",
	132	.data = &xhci_plat_renesas_rcar_gen2,
526a240f YS	133	}, {
	134	.compatible = "renesas,xhci-r8a7795",
	135	.data = &xhci_plat_renesas_rcar_gen3,
3f1dae6b YS	136	}, {
3f1dae6b YS	137	.compatible = "renesas,xhci-r8a7796",
4dd51864	138	.data = &xhci_plat_renesas_rcar_gen3,
4efb2f69	139	}, {
f1bbdc3b SH	140	.compatible = "renesas,rcar-gen2-xhci",
	141	.data = &xhci_plat_renesas_rcar_gen2,
	142	}, {
	143	.compatible = "renesas,rcar-gen3-xhci",
	144	.data = &xhci_plat_renesas_rcar_gen3,
4efb2f69	145	},
ff075d67	146	{},
4efb2f69 YS	147	};
	148	MODULE_DEVICE_TABLE(of, usb_xhci_of_match);
	149	#endif
	150
3429e91a SAS	151	static int xhci_plat_probe(struct platform_device *pdev)
3429e91a SAS	152	{
2847d242	153	const struct xhci_plat_priv *priv_match;
3429e91a	154	const struct hc_driver *driver;
4c39d4b9	155	struct device *sysdev;
3429e91a SAS	156	struct xhci_hcd *xhci;
	157	struct resource *res;
	158	struct usb_hcd *hcd;
4718c177	159	struct clk *clk;
3429e91a SAS	160	int ret;
	161	int irq;
	162
	163	if (usb_disabled())
	164	return -ENODEV;
	165
1885d9a3	166	driver = &xhci_plat_hc_driver;
3429e91a SAS	167
	168	irq = platform_get_irq(pdev, 0);
	169	if (irq < 0)
4b148d51	170	return irq;
3429e91a	171
4c39d4b9 AB	172	/*
	173	* sysdev must point to a device that is known to the system firmware
	174	* or PCI hardware. We handle these three cases here:
	175	* 1. xhci_plat comes from firmware
	176	* 2. xhci_plat is child of a device from firmware (dwc3-plat)
	177	* 3. xhci_plat is grandchild of a pci device (dwc3-pci)
	178	*/
c6b8e793 AW	179	for (sysdev = &pdev->dev; sysdev; sysdev = sysdev->parent) {
	180	if (is_of_node(sysdev->fwnode) \|\|
	181	is_acpi_device_node(sysdev->fwnode))
	182	break;
4c39d4b9	183	#ifdef CONFIG_PCI
c6b8e793 AW	184	else if (sysdev->bus == &pci_bus_type)
c6b8e793 AW	185	break;
4c39d4b9	186	#endif
c6b8e793 AW	187	}
	188
	189	if (!sysdev)
	190	sysdev = &pdev->dev;
4c39d4b9	191
0ebbe398	192	/* Try to set 64-bit DMA first */
4c39d4b9	193	if (WARN_ON(!sysdev->dma_mask))
0ebbe398	194	/* Platform did not initialize dma_mask */
4c39d4b9	195	ret = dma_coerce_mask_and_coherent(sysdev,
0ebbe398	196	DMA_BIT_MASK(64));
c10cf118	197	else
4c39d4b9	198	ret = dma_set_mask_and_coherent(sysdev, DMA_BIT_MASK(64));
0ebbe398 DD	199
	200	/* If seting 64-bit DMA mask fails, fall back to 32-bit DMA mask */
	201	if (ret) {
4c39d4b9	202	ret = dma_set_mask_and_coherent(sysdev, DMA_BIT_MASK(32));
0ebbe398 DD	203	if (ret)
	204	return ret;
	205	}
c10cf118	206
b0c69b4b BW	207	pm_runtime_set_active(&pdev->dev);
	208	pm_runtime_enable(&pdev->dev);
	209	pm_runtime_get_noresume(&pdev->dev);
	210
4c39d4b9 AB	211	hcd = __usb_create_hcd(driver, sysdev, &pdev->dev,
4c39d4b9 AB	212	dev_name(&pdev->dev), NULL);
b0c69b4b BW	213	if (!hcd) {
	214	ret = -ENOMEM;
	215	goto disable_runtime;
	216	}
3429e91a	217
e7020f19	218	res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
fd666348 HS	219	hcd->regs = devm_ioremap_resource(&pdev->dev, res);
	220	if (IS_ERR(hcd->regs)) {
	221	ret = PTR_ERR(hcd->regs);
3429e91a SAS	222	goto put_hcd;
	223	}
	224
e7020f19 VB	225	hcd->rsrc_start = res->start;
	226	hcd->rsrc_len = resource_size(res);
	227
4718c177 GC	228	/*
	229	* Not all platforms have a clk so it is not an error if the
	230	* clock does not exists.
	231	*/
	232	clk = devm_clk_get(&pdev->dev, NULL);
	233	if (!IS_ERR(clk)) {
	234	ret = clk_prepare_enable(clk);
	235	if (ret)
fd666348	236	goto put_hcd;
de95c40d TP	237	} else if (PTR_ERR(clk) == -EPROBE_DEFER) {
	238	ret = -EPROBE_DEFER;
	239	goto put_hcd;
4718c177 GC	240	}
4718c177 GC	241
4efb2f69	242	xhci = hcd_to_xhci(hcd);
2847d242 GU	243	priv_match = of_device_get_match_data(&pdev->dev);
2847d242 GU	244	if (priv_match) {
4efb2f69 YS	245	struct xhci_plat_priv *priv = hcd_to_xhci_priv(hcd);
	246
	247	/* Just copy data for now */
2ad294d5 GC	248	if (priv_match)
2ad294d5 GC	249	priv = priv_match;
4efb2f69 YS	250	}
4efb2f69 YS	251
3c9740a1	252	device_wakeup_enable(hcd->self.controller);
3429e91a	253
4718c177	254	xhci->clk = clk;
9fa733f2	255	xhci->main_hcd = hcd;
4c39d4b9	256	xhci->shared_hcd = __usb_create_hcd(driver, sysdev, &pdev->dev,
3429e91a SAS	257	dev_name(&pdev->dev), hcd);
	258	if (!xhci->shared_hcd) {
	259	ret = -ENOMEM;
4ac53087	260	goto disable_clk;
3429e91a SAS	261	}
3429e91a SAS	262
4750bc78 TN	263	if (device_property_read_bool(sysdev, "usb2-lpm-disable"))
	264	xhci->quirks \|= XHCI_HW_LPM_DISABLE;
	265
4c39d4b9	266	if (device_property_read_bool(sysdev, "usb3-lpm-capable"))
20f6fdd0	267	xhci->quirks \|= XHCI_LPM_SUPPORT;
3429e91a	268
21939f00 FB	269	if (device_property_read_bool(&pdev->dev, "quirk-broken-port-ped"))
	270	xhci->quirks \|= XHCI_BROKEN_PORT_PED;
	271
ab725cbe AW	272	/* imod_interval is the interrupt moderation value in nanoseconds. */
	273	xhci->imod_interval = 40000;
	274	device_property_read_u32(sysdev, "imod-interval-ns",
	275	&xhci->imod_interval);
	276
4c39d4b9	277	hcd->usb_phy = devm_usb_get_phy_by_phandle(sysdev, "usb-phy", 0);
7b8ef22e MR	278	if (IS_ERR(hcd->usb_phy)) {
	279	ret = PTR_ERR(hcd->usb_phy);
	280	if (ret == -EPROBE_DEFER)
	281	goto put_usb3_hcd;
	282	hcd->usb_phy = NULL;
	283	} else {
	284	ret = usb_phy_init(hcd->usb_phy);
	285	if (ret)
	286	goto put_usb3_hcd;
	287	}
	288
4ac53087	289	ret = usb_add_hcd(hcd, irq, IRQF_SHARED);
3429e91a	290	if (ret)
7b8ef22e	291	goto disable_usb_phy;
3429e91a	292
5de4e1ea W	293	if (HCC_MAX_PSA(xhci->hcc_params) >= 4)
	294	xhci->shared_hcd->can_do_streams = 1;
	295
4ac53087 RQ	296	ret = usb_add_hcd(xhci->shared_hcd, irq, IRQF_SHARED);
	297	if (ret)
	298	goto dealloc_usb2_hcd;
	299
c70a1529	300	device_enable_async_suspend(&pdev->dev);
b0c69b4b BW	301	pm_runtime_put_noidle(&pdev->dev);
	302
	303	/*
	304	* Prevent runtime pm from being on as default, users should enable
	305	* runtime pm using power/control in sysfs.
	306	*/
	307	pm_runtime_forbid(&pdev->dev);
c70a1529	308
3429e91a SAS	309	return 0;
3429e91a SAS	310
4ac53087 RQ	311
	312	dealloc_usb2_hcd:
	313	usb_remove_hcd(hcd);
	314
7b8ef22e MR	315	disable_usb_phy:
	316	usb_phy_shutdown(hcd->usb_phy);
	317
3429e91a SAS	318	put_usb3_hcd:
	319	usb_put_hcd(xhci->shared_hcd);
	320
4718c177 GC	321	disable_clk:
	322	if (!IS_ERR(clk))
	323	clk_disable_unprepare(clk);
	324
3429e91a SAS	325	put_hcd:
	326	usb_put_hcd(hcd);
	327
b0c69b4b BW	328	disable_runtime:
	329	pm_runtime_put_noidle(&pdev->dev);
	330	pm_runtime_disable(&pdev->dev);
	331
3429e91a SAS	332	return ret;
	333	}
	334
	335	static int xhci_plat_remove(struct platform_device *dev)
	336	{
	337	struct usb_hcd *hcd = platform_get_drvdata(dev);
	338	struct xhci_hcd *xhci = hcd_to_xhci(hcd);
4718c177	339	struct clk *clk = xhci->clk;
3429e91a	340
dcc7620c GR	341	xhci->xhc_state \|= XHCI_STATE_REMOVING;
dcc7620c GR	342
3429e91a	343	usb_remove_hcd(xhci->shared_hcd);
7b8ef22e	344	usb_phy_shutdown(hcd->usb_phy);
3429e91a SAS	345
3429e91a SAS	346	usb_remove_hcd(hcd);
4ac53087 RQ	347	usb_put_hcd(xhci->shared_hcd);
4ac53087 RQ	348
4718c177 GC	349	if (!IS_ERR(clk))
4718c177 GC	350	clk_disable_unprepare(clk);
3429e91a	351	usb_put_hcd(hcd);
3429e91a	352
b0c69b4b BW	353	pm_runtime_set_suspended(&dev->dev);
	354	pm_runtime_disable(&dev->dev);
	355
3429e91a SAS	356	return 0;
	357	}
	358
d852ed98	359	static int __maybe_unused xhci_plat_suspend(struct device *dev)
57d04eb1 VS	360	{
	361	struct usb_hcd *hcd = dev_get_drvdata(dev);
	362	struct xhci_hcd *xhci = hcd_to_xhci(hcd);
835e4241	363	int ret;
57d04eb1	364
a1377e53 LB	365	/*
	366	* xhci_suspend() needs `do_wakeup` to know whether host is allowed
	367	* to do wakeup during suspend. Since xhci_plat_suspend is currently
	368	* only designed for system suspend, device_may_wakeup() is enough
	369	* to dertermine whether host is allowed to do wakeup. Need to
	370	* reconsider this when xhci_plat_suspend enlarges its scope, e.g.,
	371	* also applies to runtime suspend.
	372	*/
835e4241 YS	373	ret = xhci_suspend(xhci, device_may_wakeup(dev));
	374
	375	if (!device_may_wakeup(dev) && !IS_ERR(xhci->clk))
	376	clk_disable_unprepare(xhci->clk);
	377
	378	return ret;
57d04eb1 VS	379	}
57d04eb1 VS	380
d852ed98	381	static int __maybe_unused xhci_plat_resume(struct device *dev)
57d04eb1 VS	382	{
	383	struct usb_hcd *hcd = dev_get_drvdata(dev);
	384	struct xhci_hcd *xhci = hcd_to_xhci(hcd);
98c0a3ff	385	int ret;
57d04eb1	386
835e4241 YS	387	if (!device_may_wakeup(dev) && !IS_ERR(xhci->clk))
	388	clk_prepare_enable(xhci->clk);
	389
98c0a3ff YS	390	ret = xhci_priv_resume_quirk(hcd);
	391	if (ret)
	392	return ret;
	393
57d04eb1 VS	394	return xhci_resume(xhci, 0);
57d04eb1 VS	395	}
b0c69b4b	396
d852ed98	397	static int __maybe_unused xhci_plat_runtime_suspend(struct device *dev)
b0c69b4b BW	398	{
	399	struct usb_hcd *hcd = dev_get_drvdata(dev);
	400	struct xhci_hcd *xhci = hcd_to_xhci(hcd);
	401
	402	return xhci_suspend(xhci, true);
	403	}
	404
d852ed98	405	static int __maybe_unused xhci_plat_runtime_resume(struct device *dev)
b0c69b4b BW	406	{
	407	struct usb_hcd *hcd = dev_get_drvdata(dev);
	408	struct xhci_hcd *xhci = hcd_to_xhci(hcd);
	409
	410	return xhci_resume(xhci, 0);
	411	}
57d04eb1 VS	412
	413	static const struct dev_pm_ops xhci_plat_pm_ops = {
	414	SET_SYSTEM_SLEEP_PM_OPS(xhci_plat_suspend, xhci_plat_resume)
b0c69b4b BW	415
	416	SET_RUNTIME_PM_OPS(xhci_plat_runtime_suspend,
	417	xhci_plat_runtime_resume,
	418	NULL)
57d04eb1	419	};
57d04eb1	420
579085b5 DD	421	static const struct acpi_device_id usb_xhci_acpi_match[] = {
	422	/* XHCI-compliant USB Controller */
	423	{ "PNP0D10", },
	424	{ }
	425	};
	426	MODULE_DEVICE_TABLE(acpi, usb_xhci_acpi_match);
	427
3429e91a SAS	428	static struct platform_driver usb_xhci_driver = {
	429	.probe = xhci_plat_probe,
	430	.remove = xhci_plat_remove,
b07c1251	431	.shutdown = usb_hcd_platform_shutdown,
3429e91a SAS	432	.driver = {
3429e91a SAS	433	.name = "xhci-hcd",
b0c69b4b	434	.pm = &xhci_plat_pm_ops,
1fe6c452	435	.of_match_table = of_match_ptr(usb_xhci_of_match),
579085b5	436	.acpi_match_table = ACPI_PTR(usb_xhci_acpi_match),
3429e91a SAS	437	},
	438	};
	439	MODULE_ALIAS("platform:xhci-hcd");
	440
29e409f0	441	static int __init xhci_plat_init(void)
3429e91a	442	{
cd33a321	443	xhci_init_driver(&xhci_plat_hc_driver, &xhci_plat_overrides);
3429e91a SAS	444	return platform_driver_register(&usb_xhci_driver);
3429e91a SAS	445	}
29e409f0	446	module_init(xhci_plat_init);
3429e91a	447
29e409f0	448	static void __exit xhci_plat_exit(void)
3429e91a SAS	449	{
	450	platform_driver_unregister(&usb_xhci_driver);
	451	}
29e409f0 AB	452	module_exit(xhci_plat_exit);
	453
	454	MODULE_DESCRIPTION("xHCI Platform Host Controller Driver");
	455	MODULE_LICENSE("GPL");