[deliverable/linux.git] / drivers / usb / dwc3 / dwc3-pci.c

/**
 * dwc3-pci.c - PCI Specific glue layer
 *
 * Copyright (C) 2010-2011 Texas Instruments Incorporated - http://www.ti.com
 *
 * Authors: Felipe Balbi <balbi@ti.com>,
 *	    Sebastian Andrzej Siewior <bigeasy@linutronix.de>
 *
 * This program is free software: you can redistribute it and/or modify
 * it under the terms of the GNU General Public License version 2  of
 * the License as published by the Free Software Foundation.
 *
 * 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.
 */

#include <linux/kernel.h>
#include <linux/module.h>
#include <linux/slab.h>
#include <linux/pci.h>
#include <linux/platform_device.h>
#include <linux/gpio/consumer.h>
#include <linux/acpi.h>

#include "platform_data.h"

#define PCI_DEVICE_ID_SYNOPSYS_HAPSUSB3		0xabcd
#define PCI_DEVICE_ID_SYNOPSYS_HAPSUSB3_AXI	0xabce
#define PCI_DEVICE_ID_SYNOPSYS_HAPSUSB31	0xabcf
#define PCI_DEVICE_ID_INTEL_BYT			0x0f37
#define PCI_DEVICE_ID_INTEL_MRFLD		0x119e
#define PCI_DEVICE_ID_INTEL_BSW			0x22b7
#define PCI_DEVICE_ID_INTEL_SPTLP		0x9d30
#define PCI_DEVICE_ID_INTEL_SPTH		0xa130
#define PCI_DEVICE_ID_INTEL_BXT			0x0aaa
#define PCI_DEVICE_ID_INTEL_APL			0x5aaa

static const struct acpi_gpio_params reset_gpios = { 0, 0, false };
static const struct acpi_gpio_params cs_gpios = { 1, 0, false };

static const struct acpi_gpio_mapping acpi_dwc3_byt_gpios[] = {
	{ "reset-gpios", &reset_gpios, 1 },
	{ "cs-gpios", &cs_gpios, 1 },
	{ },
};

static int dwc3_pci_quirks(struct pci_dev *pdev)
{
	if (pdev->vendor == PCI_VENDOR_ID_AMD &&
	    pdev->device == PCI_DEVICE_ID_AMD_NL_USB) {
		struct dwc3_platform_data pdata;

		memset(&pdata, 0, sizeof(pdata));

		pdata.has_lpm_erratum = true;
		pdata.lpm_nyet_threshold = 0xf;

		pdata.u2exit_lfps_quirk = true;
		pdata.u2ss_inp3_quirk = true;
		pdata.req_p1p2p3_quirk = true;
		pdata.del_p1p2p3_quirk = true;
		pdata.del_phy_power_chg_quirk = true;
		pdata.lfps_filter_quirk = true;
		pdata.rx_detect_poll_quirk = true;

		pdata.tx_de_emphasis_quirk = true;
		pdata.tx_de_emphasis = 1;

		/*
		 * FIXME these quirks should be removed when AMD NL
		 * taps out
		 */
		pdata.disable_scramble_quirk = true;
		pdata.dis_u3_susphy_quirk = true;
		pdata.dis_u2_susphy_quirk = true;

		return platform_device_add_data(pci_get_drvdata(pdev), &pdata,
						sizeof(pdata));
	}

	if (pdev->vendor == PCI_VENDOR_ID_INTEL &&
	    pdev->device == PCI_DEVICE_ID_INTEL_BYT) {
		struct gpio_desc *gpio;

		acpi_dev_add_driver_gpios(ACPI_COMPANION(&pdev->dev),
					  acpi_dwc3_byt_gpios);

		/*
		 * These GPIOs will turn on the USB2 PHY. Note that we have to
		 * put the gpio descriptors again here because the phy driver
		 * might want to grab them, too.
		 */
		gpio = gpiod_get_optional(&pdev->dev, "cs", GPIOD_OUT_LOW);
		if (IS_ERR(gpio))
			return PTR_ERR(gpio);

		gpiod_set_value_cansleep(gpio, 1);
		gpiod_put(gpio);

		gpio = gpiod_get_optional(&pdev->dev, "reset", GPIOD_OUT_LOW);
		if (IS_ERR(gpio))
			return PTR_ERR(gpio);

		if (gpio) {
			gpiod_set_value_cansleep(gpio, 1);
			gpiod_put(gpio);
			usleep_range(10000, 11000);
		}
	}

	if (pdev->vendor == PCI_VENDOR_ID_SYNOPSYS &&
	    (pdev->device == PCI_DEVICE_ID_SYNOPSYS_HAPSUSB3 ||
	     pdev->device == PCI_DEVICE_ID_SYNOPSYS_HAPSUSB3_AXI ||
	     pdev->device == PCI_DEVICE_ID_SYNOPSYS_HAPSUSB31)) {

		struct dwc3_platform_data pdata;

		memset(&pdata, 0, sizeof(pdata));
		pdata.usb3_lpm_capable = true;
		pdata.has_lpm_erratum = true;
		pdata.dis_enblslpm_quirk = true;

		return platform_device_add_data(pci_get_drvdata(pdev), &pdata,
						sizeof(pdata));
	}

	return 0;
}

static int dwc3_pci_probe(struct pci_dev *pci,
		const struct pci_device_id *id)
{
	struct resource		res[2];
	struct platform_device	*dwc3;
	int			ret;
	struct device		*dev = &pci->dev;

	ret = pcim_enable_device(pci);
	if (ret) {
		dev_err(dev, "failed to enable pci device\n");
		return -ENODEV;
	}

	pci_set_master(pci);

	dwc3 = platform_device_alloc("dwc3", PLATFORM_DEVID_AUTO);
	if (!dwc3) {
		dev_err(dev, "couldn't allocate dwc3 device\n");
		return -ENOMEM;
	}

	memset(res, 0x00, sizeof(struct resource) * ARRAY_SIZE(res));

	res[0].start	= pci_resource_start(pci, 0);
	res[0].end	= pci_resource_end(pci, 0);
	res[0].name	= "dwc_usb3";
	res[0].flags	= IORESOURCE_MEM;

	res[1].start	= pci->irq;
	res[1].name	= "dwc_usb3";
	res[1].flags	= IORESOURCE_IRQ;

	ret = platform_device_add_resources(dwc3, res, ARRAY_SIZE(res));
	if (ret) {
		dev_err(dev, "couldn't add resources to dwc3 device\n");
		return ret;
	}

	pci_set_drvdata(pci, dwc3);
	ret = dwc3_pci_quirks(pci);
	if (ret)
		goto err;

	dwc3->dev.parent = dev;
	ACPI_COMPANION_SET(&dwc3->dev, ACPI_COMPANION(dev));

	ret = platform_device_add(dwc3);
	if (ret) {
		dev_err(dev, "failed to register dwc3 device\n");
		goto err;
	}

	return 0;
err:
	platform_device_put(dwc3);
	return ret;
}

static void dwc3_pci_remove(struct pci_dev *pci)
{
	acpi_dev_remove_driver_gpios(ACPI_COMPANION(&pci->dev));
	platform_device_unregister(pci_get_drvdata(pci));
}

static const struct pci_device_id dwc3_pci_id_table[] = {
	{
		PCI_DEVICE(PCI_VENDOR_ID_SYNOPSYS,
				PCI_DEVICE_ID_SYNOPSYS_HAPSUSB3),
	},
	{
		PCI_DEVICE(PCI_VENDOR_ID_SYNOPSYS,
				PCI_DEVICE_ID_SYNOPSYS_HAPSUSB3_AXI),
	},
	{
		PCI_DEVICE(PCI_VENDOR_ID_SYNOPSYS,
				PCI_DEVICE_ID_SYNOPSYS_HAPSUSB31),
	},
	{ PCI_DEVICE(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_BSW), },
	{ PCI_DEVICE(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_BYT), },
	{ PCI_DEVICE(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_MRFLD), },
	{ PCI_DEVICE(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_SPTLP), },
	{ PCI_DEVICE(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_SPTH), },
	{ PCI_DEVICE(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_BXT), },
	{ PCI_DEVICE(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_APL), },
	{ PCI_DEVICE(PCI_VENDOR_ID_AMD, PCI_DEVICE_ID_AMD_NL_USB), },
	{  }	/* Terminating Entry */
};
MODULE_DEVICE_TABLE(pci, dwc3_pci_id_table);

static struct pci_driver dwc3_pci_driver = {
	.name		= "dwc3-pci",
	.id_table	= dwc3_pci_id_table,
	.probe		= dwc3_pci_probe,
	.remove		= dwc3_pci_remove,
};

MODULE_AUTHOR("Felipe Balbi <balbi@ti.com>");
MODULE_LICENSE("GPL v2");
MODULE_DESCRIPTION("DesignWare USB3 PCI Glue Layer");

module_pci_driver(dwc3_pci_driver);
Commit	Line	Data
72246da4 FB	1	/**
	2	* dwc3-pci.c - PCI Specific glue layer
	3	*
	4	* Copyright (C) 2010-2011 Texas Instruments Incorporated - http://www.ti.com
72246da4 FB	5	*
	6	* Authors: Felipe Balbi <balbi@ti.com>,
	7	* Sebastian Andrzej Siewior <bigeasy@linutronix.de>
	8	*
5945f789 FB	9	* This program is free software: you can redistribute it and/or modify
	10	* it under the terms of the GNU General Public License version 2 of
	11	* the License as published by the Free Software Foundation.
72246da4	12	*
5945f789 FB	13	* This program is distributed in the hope that it will be useful,
	14	* but WITHOUT ANY WARRANTY; without even the implied warranty of
	15	* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
	16	* GNU General Public License for more details.
72246da4 FB	17	*/
	18
	19	#include <linux/kernel.h>
46a57283	20	#include <linux/module.h>
72246da4 FB	21	#include <linux/slab.h>
	22	#include <linux/pci.h>
	23	#include <linux/platform_device.h>
a89d977c HK	24	#include <linux/gpio/consumer.h>
a89d977c HK	25	#include <linux/acpi.h>
72246da4	26
8f317b47 HR	27	#include "platform_data.h"
8f317b47 HR	28
9a5a0783 JY	29	#define PCI_DEVICE_ID_SYNOPSYS_HAPSUSB3 0xabcd
	30	#define PCI_DEVICE_ID_SYNOPSYS_HAPSUSB3_AXI 0xabce
	31	#define PCI_DEVICE_ID_SYNOPSYS_HAPSUSB31 0xabcf
	32	#define PCI_DEVICE_ID_INTEL_BYT 0x0f37
	33	#define PCI_DEVICE_ID_INTEL_MRFLD 0x119e
	34	#define PCI_DEVICE_ID_INTEL_BSW 0x22b7
	35	#define PCI_DEVICE_ID_INTEL_SPTLP 0x9d30
	36	#define PCI_DEVICE_ID_INTEL_SPTH 0xa130
b4c580a4 HK	37	#define PCI_DEVICE_ID_INTEL_BXT 0x0aaa
b4c580a4 HK	38	#define PCI_DEVICE_ID_INTEL_APL 0x5aaa
72246da4	39
a89d977c HK	40	static const struct acpi_gpio_params reset_gpios = { 0, 0, false };
	41	static const struct acpi_gpio_params cs_gpios = { 1, 0, false };
	42
	43	static const struct acpi_gpio_mapping acpi_dwc3_byt_gpios[] = {
	44	{ "reset-gpios", &reset_gpios, 1 },
	45	{ "cs-gpios", &cs_gpios, 1 },
	46	{ },
	47	};
	48
2cd9ddf7 HK	49	static int dwc3_pci_quirks(struct pci_dev *pdev)
	50	{
	51	if (pdev->vendor == PCI_VENDOR_ID_AMD &&
	52	pdev->device == PCI_DEVICE_ID_AMD_NL_USB) {
	53	struct dwc3_platform_data pdata;
	54
	55	memset(&pdata, 0, sizeof(pdata));
	56
	57	pdata.has_lpm_erratum = true;
	58	pdata.lpm_nyet_threshold = 0xf;
	59
	60	pdata.u2exit_lfps_quirk = true;
	61	pdata.u2ss_inp3_quirk = true;
	62	pdata.req_p1p2p3_quirk = true;
	63	pdata.del_p1p2p3_quirk = true;
	64	pdata.del_phy_power_chg_quirk = true;
	65	pdata.lfps_filter_quirk = true;
	66	pdata.rx_detect_poll_quirk = true;
	67
	68	pdata.tx_de_emphasis_quirk = true;
	69	pdata.tx_de_emphasis = 1;
	70
	71	/*
	72	* FIXME these quirks should be removed when AMD NL
	73	* taps out
	74	*/
	75	pdata.disable_scramble_quirk = true;
	76	pdata.dis_u3_susphy_quirk = true;
	77	pdata.dis_u2_susphy_quirk = true;
	78
	79	return platform_device_add_data(pci_get_drvdata(pdev), &pdata,
	80	sizeof(pdata));
	81	}
	82
a89d977c HK	83	if (pdev->vendor == PCI_VENDOR_ID_INTEL &&
	84	pdev->device == PCI_DEVICE_ID_INTEL_BYT) {
	85	struct gpio_desc *gpio;
	86
	87	acpi_dev_add_driver_gpios(ACPI_COMPANION(&pdev->dev),
	88	acpi_dwc3_byt_gpios);
	89
2df033ca UKK	90	/*
	91	* These GPIOs will turn on the USB2 PHY. Note that we have to
	92	* put the gpio descriptors again here because the phy driver
	93	* might want to grab them, too.
	94	*/
	95	gpio = gpiod_get_optional(&pdev->dev, "cs", GPIOD_OUT_LOW);
	96	if (IS_ERR(gpio))
	97	return PTR_ERR(gpio);
	98
	99	gpiod_set_value_cansleep(gpio, 1);
	100	gpiod_put(gpio);
	101
	102	gpio = gpiod_get_optional(&pdev->dev, "reset", GPIOD_OUT_LOW);
	103	if (IS_ERR(gpio))
	104	return PTR_ERR(gpio);
a89d977c	105
2df033ca	106	if (gpio) {
a89d977c HK	107	gpiod_set_value_cansleep(gpio, 1);
	108	gpiod_put(gpio);
	109	usleep_range(10000, 11000);
	110	}
	111	}
	112
bb7f3d6d JY	113	if (pdev->vendor == PCI_VENDOR_ID_SYNOPSYS &&
	114	(pdev->device == PCI_DEVICE_ID_SYNOPSYS_HAPSUSB3 \|\|
	115	pdev->device == PCI_DEVICE_ID_SYNOPSYS_HAPSUSB3_AXI \|\|
	116	pdev->device == PCI_DEVICE_ID_SYNOPSYS_HAPSUSB31)) {
	117
	118	struct dwc3_platform_data pdata;
	119
	120	memset(&pdata, 0, sizeof(pdata));
	121	pdata.usb3_lpm_capable = true;
	122	pdata.has_lpm_erratum = true;
94218ee3	123	pdata.dis_enblslpm_quirk = true;
bb7f3d6d JY	124
	125	return platform_device_add_data(pci_get_drvdata(pdev), &pdata,
	126	sizeof(pdata));
	127	}
	128
2cd9ddf7 HK	129	return 0;
2cd9ddf7 HK	130	}
72246da4	131
41ac7b3a	132	static int dwc3_pci_probe(struct pci_dev *pci,
72246da4 FB	133	const struct pci_device_id *id)
	134	{
	135	struct resource res[2];
	136	struct platform_device *dwc3;
b09e99ee	137	int ret;
802ca850	138	struct device *dev = &pci->dev;
72246da4	139
f1c7e710	140	ret = pcim_enable_device(pci);
72246da4	141	if (ret) {
802ca850 CP	142	dev_err(dev, "failed to enable pci device\n");
802ca850 CP	143	return -ENODEV;
72246da4 FB	144	}
72246da4 FB	145
72246da4 FB	146	pci_set_master(pci);
72246da4 FB	147
124dafde	148	dwc3 = platform_device_alloc("dwc3", PLATFORM_DEVID_AUTO);
72246da4	149	if (!dwc3) {
802ca850	150	dev_err(dev, "couldn't allocate dwc3 device\n");
f1c7e710	151	return -ENOMEM;
72246da4 FB	152	}
	153
	154	memset(res, 0x00, sizeof(struct resource) * ARRAY_SIZE(res));
	155
	156	res[0].start = pci_resource_start(pci, 0);
	157	res[0].end = pci_resource_end(pci, 0);
	158	res[0].name = "dwc_usb3";
	159	res[0].flags = IORESOURCE_MEM;
	160
	161	res[1].start = pci->irq;
	162	res[1].name = "dwc_usb3";
	163	res[1].flags = IORESOURCE_IRQ;
	164
	165	ret = platform_device_add_resources(dwc3, res, ARRAY_SIZE(res));
	166	if (ret) {
802ca850	167	dev_err(dev, "couldn't add resources to dwc3 device\n");
f1c7e710	168	return ret;
72246da4 FB	169	}
72246da4 FB	170
2cd9ddf7 HK	171	pci_set_drvdata(pci, dwc3);
2cd9ddf7 HK	172	ret = dwc3_pci_quirks(pci);
8f317b47	173	if (ret)
2cd9ddf7	174	goto err;
72246da4	175
802ca850	176	dwc3->dev.parent = dev;
9caeb06e	177	ACPI_COMPANION_SET(&dwc3->dev, ACPI_COMPANION(dev));
72246da4 FB	178
	179	ret = platform_device_add(dwc3);
	180	if (ret) {
802ca850	181	dev_err(dev, "failed to register dwc3 device\n");
2cd9ddf7	182	goto err;
72246da4 FB	183	}
	184
	185	return 0;
2cd9ddf7	186	err:
72246da4	187	platform_device_put(dwc3);
72246da4 FB	188	return ret;
	189	}
	190
fb4e98ab	191	static void dwc3_pci_remove(struct pci_dev *pci)
72246da4	192	{
a89d977c	193	acpi_dev_remove_driver_gpios(ACPI_COMPANION(&pci->dev));
2cd9ddf7	194	platform_device_unregister(pci_get_drvdata(pci));
72246da4 FB	195	}
72246da4 FB	196
782df20c	197	static const struct pci_device_id dwc3_pci_id_table[] = {
72246da4 FB	198	{
	199	PCI_DEVICE(PCI_VENDOR_ID_SYNOPSYS,
	200	PCI_DEVICE_ID_SYNOPSYS_HAPSUSB3),
	201	},
41adc59c JY	202	{
	203	PCI_DEVICE(PCI_VENDOR_ID_SYNOPSYS,
	204	PCI_DEVICE_ID_SYNOPSYS_HAPSUSB3_AXI),
	205	},
e8095a25 JY	206	{
	207	PCI_DEVICE(PCI_VENDOR_ID_SYNOPSYS,
	208	PCI_DEVICE_ID_SYNOPSYS_HAPSUSB31),
	209	},
7d643664	210	{ PCI_DEVICE(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_BSW), },
b62cd96d	211	{ PCI_DEVICE(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_BYT), },
85601f8c	212	{ PCI_DEVICE(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_MRFLD), },
84a2b61b HK	213	{ PCI_DEVICE(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_SPTLP), },
84a2b61b HK	214	{ PCI_DEVICE(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_SPTH), },
b4c580a4 HK	215	{ PCI_DEVICE(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_BXT), },
b4c580a4 HK	216	{ PCI_DEVICE(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_APL), },
9755449d	217	{ PCI_DEVICE(PCI_VENDOR_ID_AMD, PCI_DEVICE_ID_AMD_NL_USB), },
72246da4 FB	218	{ } /* Terminating Entry */
	219	};
	220	MODULE_DEVICE_TABLE(pci, dwc3_pci_id_table);
	221
	222	static struct pci_driver dwc3_pci_driver = {
0949e99b	223	.name = "dwc3-pci",
72246da4 FB	224	.id_table = dwc3_pci_id_table,
72246da4 FB	225	.probe = dwc3_pci_probe,
7690417d	226	.remove = dwc3_pci_remove,
72246da4 FB	227	};
	228
	229	MODULE_AUTHOR("Felipe Balbi <balbi@ti.com>");
5945f789	230	MODULE_LICENSE("GPL v2");
72246da4 FB	231	MODULE_DESCRIPTION("DesignWare USB3 PCI Glue Layer");
72246da4 FB	232
95656336	233	module_pci_driver(dwc3_pci_driver);