[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/usb/otg.h>
#include <linux/usb/usb_phy_generic.h>

#include "platform_data.h"

/* FIXME define these in <linux/pci_ids.h> */
#define PCI_VENDOR_ID_SYNOPSYS		0x16c3
#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

struct dwc3_pci {
	struct device		*dev;
	struct platform_device	*dwc3;
	struct platform_device	*usb2_phy;
	struct platform_device	*usb3_phy;
};

static int dwc3_pci_register_phys(struct dwc3_pci *glue)
{
	struct usb_phy_generic_platform_data pdata;
	struct platform_device	*pdev;
	int			ret;

	memset(&pdata, 0x00, sizeof(pdata));

	pdev = platform_device_alloc("usb_phy_generic", 0);
	if (!pdev)
		return -ENOMEM;

	glue->usb2_phy = pdev;
	pdata.type = USB_PHY_TYPE_USB2;
	pdata.gpio_reset = -1;

	ret = platform_device_add_data(glue->usb2_phy, &pdata, sizeof(pdata));
	if (ret)
		goto err1;

	pdev = platform_device_alloc("usb_phy_generic", 1);
	if (!pdev) {
		ret = -ENOMEM;
		goto err1;
	}

	glue->usb3_phy = pdev;
	pdata.type = USB_PHY_TYPE_USB3;

	ret = platform_device_add_data(glue->usb3_phy, &pdata, sizeof(pdata));
	if (ret)
		goto err2;

	ret = platform_device_add(glue->usb2_phy);
	if (ret)
		goto err2;

	ret = platform_device_add(glue->usb3_phy);
	if (ret)
		goto err3;

	return 0;

err3:
	platform_device_del(glue->usb2_phy);

err2:
	platform_device_put(glue->usb3_phy);

err1:
	platform_device_put(glue->usb2_phy);

	return ret;
}

static int dwc3_pci_probe(struct pci_dev *pci,
		const struct pci_device_id *id)
{
	struct resource		res[2];
	struct platform_device	*dwc3;
	struct dwc3_pci		*glue;
	int			ret;
	struct device		*dev = &pci->dev;
	struct dwc3_platform_data dwc3_pdata;

	memset(&dwc3_pdata, 0x00, sizeof(dwc3_pdata));

	glue = devm_kzalloc(dev, sizeof(*glue), GFP_KERNEL);
	if (!glue)
		return -ENOMEM;

	glue->dev = dev;

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

	pci_set_master(pci);

	ret = dwc3_pci_register_phys(glue);
	if (ret) {
		dev_err(dev, "couldn't register PHYs\n");
		return ret;
	}

	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;

	if (pci->vendor == PCI_VENDOR_ID_AMD &&
			pci->device == PCI_DEVICE_ID_AMD_NL_USB) {
		dwc3_pdata.has_lpm_erratum = true;
		dwc3_pdata.lpm_nyet_threshold = 0xf;

		dwc3_pdata.u2exit_lfps_quirk = true;
		dwc3_pdata.u2ss_inp3_quirk = true;
		dwc3_pdata.req_p1p2p3_quirk = true;
		dwc3_pdata.del_p1p2p3_quirk = true;
		dwc3_pdata.del_phy_power_chg_quirk = true;
		dwc3_pdata.lfps_filter_quirk = true;
		dwc3_pdata.rx_detect_poll_quirk = true;

		dwc3_pdata.tx_de_emphasis_quirk = true;
		dwc3_pdata.tx_de_emphasis = 1;

		/*
		 * FIXME these quirks should be removed when AMD NL
		 * taps out
		 */
		dwc3_pdata.disable_scramble_quirk = true;
		dwc3_pdata.dis_u3_susphy_quirk = true;
		dwc3_pdata.dis_u2_susphy_quirk = true;
	}

	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, glue);

	ret = platform_device_add_data(dwc3, &dwc3_pdata, sizeof(dwc3_pdata));
	if (ret)
		goto err3;

	dma_set_coherent_mask(&dwc3->dev, dev->coherent_dma_mask);

	dwc3->dev.dma_mask = dev->dma_mask;
	dwc3->dev.dma_parms = dev->dma_parms;
	dwc3->dev.parent = dev;
	glue->dwc3 = dwc3;

	ret = platform_device_add(dwc3);
	if (ret) {
		dev_err(dev, "failed to register dwc3 device\n");
		goto err3;
	}

	return 0;

err3:
	platform_device_put(dwc3);
	return ret;
}

static void dwc3_pci_remove(struct pci_dev *pci)
{
	struct dwc3_pci	*glue = pci_get_drvdata(pci);

	platform_device_unregister(glue->dwc3);
	platform_device_unregister(glue->usb2_phy);
	platform_device_unregister(glue->usb3_phy);
}

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_AMD, PCI_DEVICE_ID_AMD_NL_USB), },
	{  }	/* Terminating Entry */
};
MODULE_DEVICE_TABLE(pci, dwc3_pci_id_table);

#ifdef CONFIG_PM_SLEEP
static int dwc3_pci_suspend(struct device *dev)
{
	struct pci_dev	*pci = to_pci_dev(dev);

	pci_disable_device(pci);

	return 0;
}

static int dwc3_pci_resume(struct device *dev)
{
	struct pci_dev	*pci = to_pci_dev(dev);
	int		ret;

	ret = pci_enable_device(pci);
	if (ret) {
		dev_err(dev, "can't re-enable device --> %d\n", ret);
		return ret;
	}

	pci_set_master(pci);

	return 0;
}
#endif /* CONFIG_PM_SLEEP */

static const struct dev_pm_ops dwc3_pci_dev_pm_ops = {
	SET_SYSTEM_SLEEP_PM_OPS(dwc3_pci_suspend, dwc3_pci_resume)
};

static struct pci_driver dwc3_pci_driver = {
	.name		= "dwc3-pci",
	.id_table	= dwc3_pci_id_table,
	.probe		= dwc3_pci_probe,
	.remove		= dwc3_pci_remove,
	.driver		= {
		.pm	= &dwc3_pci_dev_pm_ops,
	},
};

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
e3ec3eb7	25	#include <linux/usb/otg.h>
d7078df6	26	#include <linux/usb/usb_phy_generic.h>
e3ec3eb7	27
8f317b47 HR	28	#include "platform_data.h"
8f317b47 HR	29
72246da4 FB	30	/* FIXME define these in <linux/pci_ids.h> */
	31	#define PCI_VENDOR_ID_SYNOPSYS 0x16c3
	32	#define PCI_DEVICE_ID_SYNOPSYS_HAPSUSB3 0xabcd
b62cd96d	33	#define PCI_DEVICE_ID_INTEL_BYT 0x0f37
85601f8c	34	#define PCI_DEVICE_ID_INTEL_MRFLD 0x119e
7d643664	35	#define PCI_DEVICE_ID_INTEL_BSW 0x22B7
72246da4	36
72246da4 FB	37	struct dwc3_pci {
	38	struct device *dev;
	39	struct platform_device *dwc3;
e3ec3eb7 FB	40	struct platform_device *usb2_phy;
e3ec3eb7 FB	41	struct platform_device *usb3_phy;
72246da4 FB	42	};
72246da4 FB	43
41ac7b3a	44	static int dwc3_pci_register_phys(struct dwc3_pci *glue)
e3ec3eb7	45	{
4525beeb	46	struct usb_phy_generic_platform_data pdata;
e3ec3eb7 FB	47	struct platform_device *pdev;
	48	int ret;
	49
	50	memset(&pdata, 0x00, sizeof(pdata));
	51
4525beeb	52	pdev = platform_device_alloc("usb_phy_generic", 0);
e3ec3eb7 FB	53	if (!pdev)
	54	return -ENOMEM;
	55
	56	glue->usb2_phy = pdev;
	57	pdata.type = USB_PHY_TYPE_USB2;
13518673	58	pdata.gpio_reset = -1;
e3ec3eb7 FB	59
	60	ret = platform_device_add_data(glue->usb2_phy, &pdata, sizeof(pdata));
	61	if (ret)
	62	goto err1;
	63
4525beeb	64	pdev = platform_device_alloc("usb_phy_generic", 1);
e3ec3eb7 FB	65	if (!pdev) {
	66	ret = -ENOMEM;
	67	goto err1;
	68	}
	69
	70	glue->usb3_phy = pdev;
	71	pdata.type = USB_PHY_TYPE_USB3;
	72
	73	ret = platform_device_add_data(glue->usb3_phy, &pdata, sizeof(pdata));
	74	if (ret)
	75	goto err2;
	76
	77	ret = platform_device_add(glue->usb2_phy);
	78	if (ret)
	79	goto err2;
	80
	81	ret = platform_device_add(glue->usb3_phy);
	82	if (ret)
	83	goto err3;
	84
	85	return 0;
	86
	87	err3:
	88	platform_device_del(glue->usb2_phy);
	89
	90	err2:
	91	platform_device_put(glue->usb3_phy);
	92
	93	err1:
	94	platform_device_put(glue->usb2_phy);
	95
	96	return ret;
	97	}
	98
41ac7b3a	99	static int dwc3_pci_probe(struct pci_dev *pci,
72246da4 FB	100	const struct pci_device_id *id)
	101	{
	102	struct resource res[2];
	103	struct platform_device *dwc3;
	104	struct dwc3_pci *glue;
b09e99ee	105	int ret;
802ca850	106	struct device *dev = &pci->dev;
8f317b47 HR	107	struct dwc3_platform_data dwc3_pdata;
	108
	109	memset(&dwc3_pdata, 0x00, sizeof(dwc3_pdata));
72246da4	110
802ca850	111	glue = devm_kzalloc(dev, sizeof(*glue), GFP_KERNEL);
734d5a53	112	if (!glue)
802ca850	113	return -ENOMEM;
72246da4	114
1d046793	115	glue->dev = dev;
72246da4	116
f1c7e710	117	ret = pcim_enable_device(pci);
72246da4	118	if (ret) {
802ca850 CP	119	dev_err(dev, "failed to enable pci device\n");
802ca850 CP	120	return -ENODEV;
72246da4 FB	121	}
72246da4 FB	122
72246da4 FB	123	pci_set_master(pci);
72246da4 FB	124
e3ec3eb7 FB	125	ret = dwc3_pci_register_phys(glue);
	126	if (ret) {
	127	dev_err(dev, "couldn't register PHYs\n");
	128	return ret;
	129	}
	130
124dafde	131	dwc3 = platform_device_alloc("dwc3", PLATFORM_DEVID_AUTO);
72246da4	132	if (!dwc3) {
802ca850	133	dev_err(dev, "couldn't allocate dwc3 device\n");
f1c7e710	134	return -ENOMEM;
72246da4 FB	135	}
	136
	137	memset(res, 0x00, sizeof(struct resource) * ARRAY_SIZE(res));
	138
	139	res[0].start = pci_resource_start(pci, 0);
	140	res[0].end = pci_resource_end(pci, 0);
	141	res[0].name = "dwc_usb3";
	142	res[0].flags = IORESOURCE_MEM;
	143
	144	res[1].start = pci->irq;
	145	res[1].name = "dwc_usb3";
	146	res[1].flags = IORESOURCE_IRQ;
	147
9755449d HR	148	if (pci->vendor == PCI_VENDOR_ID_AMD &&
	149	pci->device == PCI_DEVICE_ID_AMD_NL_USB) {
	150	dwc3_pdata.has_lpm_erratum = true;
	151	dwc3_pdata.lpm_nyet_threshold = 0xf;
	152
	153	dwc3_pdata.u2exit_lfps_quirk = true;
	154	dwc3_pdata.u2ss_inp3_quirk = true;
	155	dwc3_pdata.req_p1p2p3_quirk = true;
	156	dwc3_pdata.del_p1p2p3_quirk = true;
	157	dwc3_pdata.del_phy_power_chg_quirk = true;
	158	dwc3_pdata.lfps_filter_quirk = true;
	159	dwc3_pdata.rx_detect_poll_quirk = true;
	160
	161	dwc3_pdata.tx_de_emphasis_quirk = true;
	162	dwc3_pdata.tx_de_emphasis = 1;
	163
	164	/*
	165	* FIXME these quirks should be removed when AMD NL
	166	* taps out
	167	*/
	168	dwc3_pdata.disable_scramble_quirk = true;
	169	dwc3_pdata.dis_u3_susphy_quirk = true;
	170	dwc3_pdata.dis_u2_susphy_quirk = true;
	171	}
	172
72246da4 FB	173	ret = platform_device_add_resources(dwc3, res, ARRAY_SIZE(res));
72246da4 FB	174	if (ret) {
802ca850	175	dev_err(dev, "couldn't add resources to dwc3 device\n");
f1c7e710	176	return ret;
72246da4 FB	177	}
	178
	179	pci_set_drvdata(pci, glue);
	180
8f317b47 HR	181	ret = platform_device_add_data(dwc3, &dwc3_pdata, sizeof(dwc3_pdata));
	182	if (ret)
	183	goto err3;
	184
802ca850	185	dma_set_coherent_mask(&dwc3->dev, dev->coherent_dma_mask);
72246da4	186
802ca850 CP	187	dwc3->dev.dma_mask = dev->dma_mask;
	188	dwc3->dev.dma_parms = dev->dma_parms;
	189	dwc3->dev.parent = dev;
1d046793	190	glue->dwc3 = dwc3;
72246da4 FB	191
	192	ret = platform_device_add(dwc3);
	193	if (ret) {
802ca850 CP	194	dev_err(dev, "failed to register dwc3 device\n");
802ca850 CP	195	goto err3;
72246da4 FB	196	}
	197
	198	return 0;
	199
802ca850	200	err3:
72246da4	201	platform_device_put(dwc3);
72246da4 FB	202	return ret;
	203	}
	204
fb4e98ab	205	static void dwc3_pci_remove(struct pci_dev *pci)
72246da4 FB	206	{
	207	struct dwc3_pci *glue = pci_get_drvdata(pci);
	208
f28c42c5	209	platform_device_unregister(glue->dwc3);
e3ec3eb7 FB	210	platform_device_unregister(glue->usb2_phy);
e3ec3eb7 FB	211	platform_device_unregister(glue->usb3_phy);
72246da4 FB	212	}
72246da4 FB	213
782df20c	214	static const struct pci_device_id dwc3_pci_id_table[] = {
72246da4 FB	215	{
	216	PCI_DEVICE(PCI_VENDOR_ID_SYNOPSYS,
	217	PCI_DEVICE_ID_SYNOPSYS_HAPSUSB3),
	218	},
7d643664	219	{ PCI_DEVICE(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_BSW), },
b62cd96d	220	{ PCI_DEVICE(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_BYT), },
85601f8c	221	{ PCI_DEVICE(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_MRFLD), },
9755449d	222	{ PCI_DEVICE(PCI_VENDOR_ID_AMD, PCI_DEVICE_ID_AMD_NL_USB), },
72246da4 FB	223	{ } /* Terminating Entry */
	224	};
	225	MODULE_DEVICE_TABLE(pci, dwc3_pci_id_table);
	226
fb74d282	227	#ifdef CONFIG_PM_SLEEP
68907a77 FB	228	static int dwc3_pci_suspend(struct device *dev)
	229	{
	230	struct pci_dev *pci = to_pci_dev(dev);
	231
	232	pci_disable_device(pci);
	233
	234	return 0;
	235	}
	236
	237	static int dwc3_pci_resume(struct device *dev)
	238	{
	239	struct pci_dev *pci = to_pci_dev(dev);
	240	int ret;
	241
	242	ret = pci_enable_device(pci);
	243	if (ret) {
	244	dev_err(dev, "can't re-enable device --> %d\n", ret);
	245	return ret;
	246	}
	247
	248	pci_set_master(pci);
	249
	250	return 0;
	251	}
fb74d282	252	#endif /* CONFIG_PM_SLEEP */
68907a77 FB	253
	254	static const struct dev_pm_ops dwc3_pci_dev_pm_ops = {
	255	SET_SYSTEM_SLEEP_PM_OPS(dwc3_pci_suspend, dwc3_pci_resume)
	256	};
	257
72246da4	258	static struct pci_driver dwc3_pci_driver = {
0949e99b	259	.name = "dwc3-pci",
72246da4 FB	260	.id_table = dwc3_pci_id_table,
72246da4 FB	261	.probe = dwc3_pci_probe,
7690417d	262	.remove = dwc3_pci_remove,
68907a77	263	.driver = {
fb74d282	264	.pm = &dwc3_pci_dev_pm_ops,
68907a77	265	},
72246da4 FB	266	};
	267
	268	MODULE_AUTHOR("Felipe Balbi <balbi@ti.com>");
5945f789	269	MODULE_LICENSE("GPL v2");
72246da4 FB	270	MODULE_DESCRIPTION("DesignWare USB3 PCI Glue Layer");
72246da4 FB	271
95656336	272	module_pci_driver(dwc3_pci_driver);