[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 "platform_data.h"

#define PCI_DEVICE_ID_SYNOPSYS_HAPSUSB3	0xabcd
#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

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));
	}

	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;

	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)
{
	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_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_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>
	24
8f317b47 HR	25	#include "platform_data.h"
8f317b47 HR	26
72246da4	27	#define PCI_DEVICE_ID_SYNOPSYS_HAPSUSB3 0xabcd
b62cd96d	28	#define PCI_DEVICE_ID_INTEL_BYT 0x0f37
85601f8c	29	#define PCI_DEVICE_ID_INTEL_MRFLD 0x119e
7d643664	30	#define PCI_DEVICE_ID_INTEL_BSW 0x22B7
84a2b61b HK	31	#define PCI_DEVICE_ID_INTEL_SPTLP 0x9d30
84a2b61b HK	32	#define PCI_DEVICE_ID_INTEL_SPTH 0xa130
72246da4	33
2cd9ddf7 HK	34	static int dwc3_pci_quirks(struct pci_dev *pdev)
	35	{
	36	if (pdev->vendor == PCI_VENDOR_ID_AMD &&
	37	pdev->device == PCI_DEVICE_ID_AMD_NL_USB) {
	38	struct dwc3_platform_data pdata;
	39
	40	memset(&pdata, 0, sizeof(pdata));
	41
	42	pdata.has_lpm_erratum = true;
	43	pdata.lpm_nyet_threshold = 0xf;
	44
	45	pdata.u2exit_lfps_quirk = true;
	46	pdata.u2ss_inp3_quirk = true;
	47	pdata.req_p1p2p3_quirk = true;
	48	pdata.del_p1p2p3_quirk = true;
	49	pdata.del_phy_power_chg_quirk = true;
	50	pdata.lfps_filter_quirk = true;
	51	pdata.rx_detect_poll_quirk = true;
	52
	53	pdata.tx_de_emphasis_quirk = true;
	54	pdata.tx_de_emphasis = 1;
	55
	56	/*
	57	* FIXME these quirks should be removed when AMD NL
	58	* taps out
	59	*/
	60	pdata.disable_scramble_quirk = true;
	61	pdata.dis_u3_susphy_quirk = true;
	62	pdata.dis_u2_susphy_quirk = true;
	63
	64	return platform_device_add_data(pci_get_drvdata(pdev), &pdata,
	65	sizeof(pdata));
	66	}
	67
	68	return 0;
	69	}
72246da4	70
41ac7b3a	71	static int dwc3_pci_probe(struct pci_dev *pci,
72246da4 FB	72	const struct pci_device_id *id)
	73	{
	74	struct resource res[2];
	75	struct platform_device *dwc3;
b09e99ee	76	int ret;
802ca850	77	struct device *dev = &pci->dev;
72246da4	78
f1c7e710	79	ret = pcim_enable_device(pci);
72246da4	80	if (ret) {
802ca850 CP	81	dev_err(dev, "failed to enable pci device\n");
802ca850 CP	82	return -ENODEV;
72246da4 FB	83	}
72246da4 FB	84
72246da4 FB	85	pci_set_master(pci);
72246da4 FB	86
124dafde	87	dwc3 = platform_device_alloc("dwc3", PLATFORM_DEVID_AUTO);
72246da4	88	if (!dwc3) {
802ca850	89	dev_err(dev, "couldn't allocate dwc3 device\n");
f1c7e710	90	return -ENOMEM;
72246da4 FB	91	}
	92
	93	memset(res, 0x00, sizeof(struct resource) * ARRAY_SIZE(res));
	94
	95	res[0].start = pci_resource_start(pci, 0);
	96	res[0].end = pci_resource_end(pci, 0);
	97	res[0].name = "dwc_usb3";
	98	res[0].flags = IORESOURCE_MEM;
	99
	100	res[1].start = pci->irq;
	101	res[1].name = "dwc_usb3";
	102	res[1].flags = IORESOURCE_IRQ;
	103
	104	ret = platform_device_add_resources(dwc3, res, ARRAY_SIZE(res));
	105	if (ret) {
802ca850	106	dev_err(dev, "couldn't add resources to dwc3 device\n");
f1c7e710	107	return ret;
72246da4 FB	108	}
72246da4 FB	109
2cd9ddf7 HK	110	pci_set_drvdata(pci, dwc3);
2cd9ddf7 HK	111	ret = dwc3_pci_quirks(pci);
8f317b47	112	if (ret)
2cd9ddf7	113	goto err;
72246da4	114
802ca850	115	dwc3->dev.parent = dev;
72246da4 FB	116
	117	ret = platform_device_add(dwc3);
	118	if (ret) {
802ca850	119	dev_err(dev, "failed to register dwc3 device\n");
2cd9ddf7	120	goto err;
72246da4 FB	121	}
	122
	123	return 0;
2cd9ddf7	124	err:
72246da4	125	platform_device_put(dwc3);
72246da4 FB	126	return ret;
	127	}
	128
fb4e98ab	129	static void dwc3_pci_remove(struct pci_dev *pci)
72246da4	130	{
2cd9ddf7	131	platform_device_unregister(pci_get_drvdata(pci));
72246da4 FB	132	}
72246da4 FB	133
782df20c	134	static const struct pci_device_id dwc3_pci_id_table[] = {
72246da4 FB	135	{
	136	PCI_DEVICE(PCI_VENDOR_ID_SYNOPSYS,
	137	PCI_DEVICE_ID_SYNOPSYS_HAPSUSB3),
	138	},
7d643664	139	{ PCI_DEVICE(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_BSW), },
b62cd96d	140	{ PCI_DEVICE(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_BYT), },
85601f8c	141	{ PCI_DEVICE(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_MRFLD), },
84a2b61b HK	142	{ PCI_DEVICE(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_SPTLP), },
84a2b61b HK	143	{ PCI_DEVICE(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_SPTH), },
9755449d	144	{ PCI_DEVICE(PCI_VENDOR_ID_AMD, PCI_DEVICE_ID_AMD_NL_USB), },
72246da4 FB	145	{ } /* Terminating Entry */
	146	};
	147	MODULE_DEVICE_TABLE(pci, dwc3_pci_id_table);
	148
	149	static struct pci_driver dwc3_pci_driver = {
0949e99b	150	.name = "dwc3-pci",
72246da4 FB	151	.id_table = dwc3_pci_id_table,
72246da4 FB	152	.probe = dwc3_pci_probe,
7690417d	153	.remove = dwc3_pci_remove,
72246da4 FB	154	};
	155
	156	MODULE_AUTHOR("Felipe Balbi <balbi@ti.com>");
5945f789	157	MODULE_LICENSE("GPL v2");
72246da4 FB	158	MODULE_DESCRIPTION("DesignWare USB3 PCI Glue Layer");
72246da4 FB	159
95656336	160	module_pci_driver(dwc3_pci_driver);