[deliverable/linux.git] / drivers / usb / chipidea / ci_hdrc_pci.c

/*
 * ci_hdrc_pci.c - MIPS USB IP core family device controller
 *
 * Copyright (C) 2008 Chipidea - MIPS Technologies, Inc. All rights reserved.
 *
 * Author: David Lopo
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License version 2 as
 * published by the Free Software Foundation.
 */

#include <linux/platform_device.h>
#include <linux/module.h>
#include <linux/pci.h>
#include <linux/interrupt.h>
#include <linux/usb/gadget.h>
#include <linux/usb/chipidea.h>

/* driver name */
#define UDC_DRIVER_NAME   "ci_hdrc_pci"

/******************************************************************************
 * PCI block
 *****************************************************************************/
static struct ci_hdrc_platform_data pci_platdata = {
	.name		= UDC_DRIVER_NAME,
	.capoffset	= DEF_CAPOFFSET,
};

static struct ci_hdrc_platform_data langwell_pci_platdata = {
	.name		= UDC_DRIVER_NAME,
	.capoffset	= 0,
};

static struct ci_hdrc_platform_data penwell_pci_platdata = {
	.name		= UDC_DRIVER_NAME,
	.capoffset	= 0,
	.power_budget	= 200,
};

/**
 * ci_hdrc_pci_probe: PCI probe
 * @pdev: USB device controller being probed
 * @id:   PCI hotplug ID connecting controller to UDC framework
 *
 * This function returns an error code
 * Allocates basic PCI resources for this USB device controller, and then
 * invokes the udc_probe() method to start the UDC associated with it
 */
static int ci_hdrc_pci_probe(struct pci_dev *pdev,
				       const struct pci_device_id *id)
{
	struct ci_hdrc_platform_data *platdata = (void *)id->driver_data;
	struct platform_device *plat_ci;
	struct resource res[3];
	int retval = 0, nres = 2;

	if (!platdata) {
		dev_err(&pdev->dev, "device doesn't provide driver data\n");
		return -ENODEV;
	}

	retval = pcim_enable_device(pdev);
	if (retval)
		return retval;

	if (!pdev->irq) {
		dev_err(&pdev->dev, "No IRQ, check BIOS/PCI setup!");
		return -ENODEV;
	}

	pci_set_master(pdev);
	pci_try_set_mwi(pdev);

	memset(res, 0, sizeof(res));
	res[0].start	= pci_resource_start(pdev, 0);
	res[0].end	= pci_resource_end(pdev, 0);
	res[0].flags	= IORESOURCE_MEM;
	res[1].start	= pdev->irq;
	res[1].flags	= IORESOURCE_IRQ;

	plat_ci = ci_hdrc_add_device(&pdev->dev, res, nres, platdata);
	if (IS_ERR(plat_ci)) {
		dev_err(&pdev->dev, "ci_hdrc_add_device failed!\n");
		return PTR_ERR(plat_ci);
	}

	pci_set_drvdata(pdev, plat_ci);

	return 0;
}

/**
 * ci_hdrc_pci_remove: PCI remove
 * @pdev: USB Device Controller being removed
 *
 * Reverses the effect of ci_hdrc_pci_probe(),
 * first invoking the udc_remove() and then releases
 * all PCI resources allocated for this USB device controller
 */
static void ci_hdrc_pci_remove(struct pci_dev *pdev)
{
	struct platform_device *plat_ci = pci_get_drvdata(pdev);

	ci_hdrc_remove_device(plat_ci);
}

/**
 * PCI device table
 * PCI device structure
 *
 * Check "pci.h" for details
 */
static DEFINE_PCI_DEVICE_TABLE(ci_hdrc_pci_id_table) = {
	{
		PCI_DEVICE(0x153F, 0x1004),
		.driver_data = (kernel_ulong_t)&pci_platdata,
	},
	{
		PCI_DEVICE(0x153F, 0x1006),
		.driver_data = (kernel_ulong_t)&pci_platdata,
	},
	{
		PCI_DEVICE(PCI_VENDOR_ID_INTEL, 0x0811),
		.driver_data = (kernel_ulong_t)&langwell_pci_platdata,
	},
	{
		PCI_DEVICE(PCI_VENDOR_ID_INTEL, 0x0829),
		.driver_data = (kernel_ulong_t)&penwell_pci_platdata,
	},
	{
		/* Intel Clovertrail */
		PCI_DEVICE(PCI_VENDOR_ID_INTEL, 0xe006),
		.driver_data = (kernel_ulong_t)&penwell_pci_platdata,
	},
	{ 0 } /* end: all zeroes */
};
MODULE_DEVICE_TABLE(pci, ci_hdrc_pci_id_table);

static struct pci_driver ci_hdrc_pci_driver = {
	.name         =	UDC_DRIVER_NAME,
	.id_table     =	ci_hdrc_pci_id_table,
	.probe        =	ci_hdrc_pci_probe,
	.remove       =	ci_hdrc_pci_remove,
};

module_pci_driver(ci_hdrc_pci_driver);

MODULE_AUTHOR("MIPS - David Lopo <dlopo@chipidea.mips.com>");
MODULE_DESCRIPTION("MIPS CI13XXX USB Peripheral Controller");
MODULE_LICENSE("GPL");
MODULE_VERSION("June 2008");
MODULE_ALIAS("platform:ci13xxx_pci");
Commit	Line	Data
409a15da	1	/*
8e22978c	2	* ci_hdrc_pci.c - MIPS USB IP core family device controller
409a15da PK	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
62bb84ed	13	#include <linux/platform_device.h>
409a15da PK	14	#include <linux/module.h>
409a15da PK	15	#include <linux/pci.h>
62bb84ed AS	16	#include <linux/interrupt.h>
62bb84ed AS	17	#include <linux/usb/gadget.h>
e443b333	18	#include <linux/usb/chipidea.h>
409a15da PK	19
409a15da PK	20	/* driver name */
8e22978c	21	#define UDC_DRIVER_NAME "ci_hdrc_pci"
409a15da PK	22
	23	/******************************************************************************
	24	* PCI block
	25	*****************************************************************************/
8e22978c	26	static struct ci_hdrc_platform_data pci_platdata = {
62bb84ed AS	27	.name = UDC_DRIVER_NAME,
	28	.capoffset = DEF_CAPOFFSET,
	29	};
409a15da	30
8e22978c	31	static struct ci_hdrc_platform_data langwell_pci_platdata = {
f01ef574	32	.name = UDC_DRIVER_NAME,
62bb84ed	33	.capoffset = 0,
f01ef574 PK	34	};
f01ef574 PK	35
8e22978c	36	static struct ci_hdrc_platform_data penwell_pci_platdata = {
bd841986 AS	37	.name = UDC_DRIVER_NAME,
	38	.capoffset = 0,
	39	.power_budget = 200,
	40	};
	41
409a15da	42	/**
8e22978c	43	* ci_hdrc_pci_probe: PCI probe
409a15da PK	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	*/
8e22978c	51	static int ci_hdrc_pci_probe(struct pci_dev *pdev,
409a15da PK	52	const struct pci_device_id *id)
409a15da PK	53	{
8e22978c	54	struct ci_hdrc_platform_data platdata = (void )id->driver_data;
62bb84ed AS	55	struct platform_device *plat_ci;
	56	struct resource res[3];
	57	int retval = 0, nres = 2;
409a15da	58
77c4400f	59	if (!platdata) {
1989b5ce AS	60	dev_err(&pdev->dev, "device doesn't provide driver data\n");
	61	return -ENODEV;
	62	}
	63
8b2379b4	64	retval = pcim_enable_device(pdev);
409a15da	65	if (retval)
8b2379b4	66	return retval;
409a15da PK	67
	68	if (!pdev->irq) {
	69	dev_err(&pdev->dev, "No IRQ, check BIOS/PCI setup!");
8b2379b4	70	return -ENODEV;
409a15da PK	71	}
409a15da PK	72
409a15da PK	73	pci_set_master(pdev);
	74	pci_try_set_mwi(pdev);
	75
62bb84ed AS	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
8e22978c	83	plat_ci = ci_hdrc_add_device(&pdev->dev, res, nres, platdata);
cbc6dc2a	84	if (IS_ERR(plat_ci)) {
8e22978c	85	dev_err(&pdev->dev, "ci_hdrc_add_device failed!\n");
8b2379b4	86	return PTR_ERR(plat_ci);
62bb84ed AS	87	}
62bb84ed AS	88
62bb84ed AS	89	pci_set_drvdata(pdev, plat_ci);
62bb84ed AS	90
409a15da	91	return 0;
409a15da PK	92	}
	93
	94	/**
8e22978c	95	* ci_hdrc_pci_remove: PCI remove
409a15da PK	96	* @pdev: USB Device Controller being removed
409a15da PK	97	*
8e22978c	98	* Reverses the effect of ci_hdrc_pci_probe(),
409a15da PK	99	* first invoking the udc_remove() and then releases
	100	* all PCI resources allocated for this USB device controller
	101	*/
8e22978c	102	static void ci_hdrc_pci_remove(struct pci_dev *pdev)
409a15da	103	{
62bb84ed AS	104	struct platform_device *plat_ci = pci_get_drvdata(pdev);
62bb84ed AS	105
8e22978c	106	ci_hdrc_remove_device(plat_ci);
409a15da PK	107	}
	108
	109	/**
	110	* PCI device table
	111	* PCI device structure
	112	*
	113	* Check "pci.h" for details
	114	*/
8e22978c	115	static DEFINE_PCI_DEVICE_TABLE(ci_hdrc_pci_id_table) = {
62bb84ed AS	116	{
62bb84ed AS	117	PCI_DEVICE(0x153F, 0x1004),
77c4400f	118	.driver_data = (kernel_ulong_t)&pci_platdata,
62bb84ed AS	119	},
	120	{
	121	PCI_DEVICE(0x153F, 0x1006),
77c4400f	122	.driver_data = (kernel_ulong_t)&pci_platdata,
62bb84ed AS	123	},
	124	{
	125	PCI_DEVICE(PCI_VENDOR_ID_INTEL, 0x0811),
77c4400f	126	.driver_data = (kernel_ulong_t)&langwell_pci_platdata,
62bb84ed AS	127	},
	128	{
	129	PCI_DEVICE(PCI_VENDOR_ID_INTEL, 0x0829),
77c4400f	130	.driver_data = (kernel_ulong_t)&penwell_pci_platdata,
62bb84ed	131	},
a214339d DC	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 */
409a15da	138	};
8e22978c	139	MODULE_DEVICE_TABLE(pci, ci_hdrc_pci_id_table);
409a15da	140
8e22978c	141	static struct pci_driver ci_hdrc_pci_driver = {
409a15da	142	.name = UDC_DRIVER_NAME,
8e22978c AS	143	.id_table = ci_hdrc_pci_id_table,
	144	.probe = ci_hdrc_pci_probe,
	145	.remove = ci_hdrc_pci_remove,
409a15da PK	146	};
409a15da PK	147
8e22978c	148	module_pci_driver(ci_hdrc_pci_driver);
409a15da PK	149
	150	MODULE_AUTHOR("MIPS - David Lopo <dlopo@chipidea.mips.com>");
	151	MODULE_DESCRIPTION("MIPS CI13XXX USB Peripheral Controller");
	152	MODULE_LICENSE("GPL");
	153	MODULE_VERSION("June 2008");
8e22978c	154	MODULE_ALIAS("platform:ci13xxx_pci");