1/*
  2 * ci_hdrc_pci.c - MIPS USB IP core family device controller
  3 *
  4 * Copyright (C) 2008 Chipidea - MIPS Technologies, Inc. All rights reserved.
  5 *
  6 * Author: David Lopo
  7 *
  8 * This program is free software; you can redistribute it and/or modify
  9 * it under the terms of the GNU General Public License version 2 as
 10 * published by the Free Software Foundation.
 11 */
 12
 13#include <linux/platform_device.h>
 14#include <linux/module.h>
 15#include <linux/pci.h>
 16#include <linux/interrupt.h>
 17#include <linux/usb/gadget.h>
 18#include <linux/usb/chipidea.h>
 19
 20/* driver name */
 21#define UDC_DRIVER_NAME   "ci_hdrc_pci"
 22
 23/******************************************************************************
 24 * PCI block
 25 *****************************************************************************/
 26static struct ci_hdrc_platform_data pci_platdata = {
 27	.name		= UDC_DRIVER_NAME,
 28	.capoffset	= DEF_CAPOFFSET,
 29};
 30
 31static struct ci_hdrc_platform_data langwell_pci_platdata = {
 32	.name		= UDC_DRIVER_NAME,
 33	.capoffset	= 0,
 34};
 35
 36static struct ci_hdrc_platform_data penwell_pci_platdata = {
 37	.name		= UDC_DRIVER_NAME,
 38	.capoffset	= 0,
 39	.power_budget	= 200,
 40};
 41
 42/**
 43 * ci_hdrc_pci_probe: PCI probe
 44 * @pdev: USB device controller being probed
 45 * @id:   PCI hotplug ID connecting controller to UDC framework
 46 *
 47 * This function returns an error code
 48 * Allocates basic PCI resources for this USB device controller, and then
 49 * invokes the udc_probe() method to start the UDC associated with it
 50 */
 51static int ci_hdrc_pci_probe(struct pci_dev *pdev,
 52				       const struct pci_device_id *id)
 53{
 54	struct ci_hdrc_platform_data *platdata = (void *)id->driver_data;
 55	struct platform_device *plat_ci;
 56	struct resource res[3];
 57	int retval = 0, nres = 2;
 58
 59	if (!platdata) {
 60		dev_err(&pdev->dev, "device doesn't provide driver data\n");
 61		return -ENODEV;
 62	}
 63
 64	retval = pcim_enable_device(pdev);
 65	if (retval)
 66		return retval;
 67
 68	if (!pdev->irq) {
 69		dev_err(&pdev->dev, "No IRQ, check BIOS/PCI setup!");
 70		return -ENODEV;
 71	}
 72
 73	pci_set_master(pdev);
 74	pci_try_set_mwi(pdev);
 75
 76	memset(res, 0, sizeof(res));
 77	res[0].start	= pci_resource_start(pdev, 0);
 78	res[0].end	= pci_resource_end(pdev, 0);
 79	res[0].flags	= IORESOURCE_MEM;
 80	res[1].start	= pdev->irq;
 81	res[1].flags	= IORESOURCE_IRQ;
 82
 83	plat_ci = ci_hdrc_add_device(&pdev->dev, res, nres, platdata);
 84	if (IS_ERR(plat_ci)) {
 85		dev_err(&pdev->dev, "ci_hdrc_add_device failed!\n");
 86		return PTR_ERR(plat_ci);
 87	}
 88
 89	pci_set_drvdata(pdev, plat_ci);
 90
 91	return 0;
 92}
 93
 94/**
 95 * ci_hdrc_pci_remove: PCI remove
 96 * @pdev: USB Device Controller being removed
 97 *
 98 * Reverses the effect of ci_hdrc_pci_probe(),
 99 * first invoking the udc_remove() and then releases
100 * all PCI resources allocated for this USB device controller
101 */
102static void ci_hdrc_pci_remove(struct pci_dev *pdev)
103{
104	struct platform_device *plat_ci = pci_get_drvdata(pdev);
105
106	ci_hdrc_remove_device(plat_ci);
107}
108
109/**
110 * PCI device table
111 * PCI device structure
112 *
113 * Check "pci.h" for details
114 */
115static const struct pci_device_id ci_hdrc_pci_id_table[] = {
116	{
117		PCI_DEVICE(0x153F, 0x1004),
118		.driver_data = (kernel_ulong_t)&pci_platdata,
119	},
120	{
121		PCI_DEVICE(0x153F, 0x1006),
122		.driver_data = (kernel_ulong_t)&pci_platdata,
123	},
124	{
125		PCI_DEVICE(PCI_VENDOR_ID_INTEL, 0x0811),
126		.driver_data = (kernel_ulong_t)&langwell_pci_platdata,
127	},
128	{
129		PCI_DEVICE(PCI_VENDOR_ID_INTEL, 0x0829),
130		.driver_data = (kernel_ulong_t)&penwell_pci_platdata,
131	},
132	{
133		/* Intel Clovertrail */
134		PCI_DEVICE(PCI_VENDOR_ID_INTEL, 0xe006),
135		.driver_data = (kernel_ulong_t)&penwell_pci_platdata,
136	},
137	{ 0 } /* end: all zeroes */
138};
139MODULE_DEVICE_TABLE(pci, ci_hdrc_pci_id_table);
140
141static struct pci_driver ci_hdrc_pci_driver = {
142	.name         =	UDC_DRIVER_NAME,
143	.id_table     =	ci_hdrc_pci_id_table,
144	.probe        =	ci_hdrc_pci_probe,
145	.remove       =	ci_hdrc_pci_remove,
146};
147
148module_pci_driver(ci_hdrc_pci_driver);
149
150MODULE_AUTHOR("MIPS - David Lopo <dlopo@chipidea.mips.com>");
151MODULE_DESCRIPTION("MIPS CI13XXX USB Peripheral Controller");
152MODULE_LICENSE("GPL");
153MODULE_VERSION("June 2008");
154MODULE_ALIAS("platform:ci13xxx_pci");