[deliverable/linux.git] / drivers / usb / dwc2 / pci.c

/*
 * pci.c - DesignWare HS OTG Controller PCI driver
 *
 * Copyright (C) 2004-2013 Synopsys, Inc.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions, and the following disclaimer,
 *    without modification.
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in the
 *    documentation and/or other materials provided with the distribution.
 * 3. The names of the above-listed copyright holders may not be used
 *    to endorse or promote products derived from this software without
 *    specific prior written permission.
 *
 * ALTERNATIVELY, this software may be distributed under the terms of the
 * GNU General Public License ("GPL") as published by the Free Software
 * Foundation; either version 2 of the License, or (at your option) any
 * later version.
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS
 * IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
 * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
 * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
 * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
 * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
 * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
 * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 */

/*
 * Provides the initialization and cleanup entry points for the DWC_otg PCI
 * driver
 */
#include <linux/kernel.h>
#include <linux/module.h>
#include <linux/moduleparam.h>
#include <linux/spinlock.h>
#include <linux/interrupt.h>
#include <linux/io.h>
#include <linux/slab.h>
#include <linux/pci.h>
#include <linux/usb.h>

#include <linux/usb/hcd.h>
#include <linux/usb/ch11.h>
#include <linux/platform_device.h>
#include <linux/usb/usb_phy_generic.h>

#define PCI_PRODUCT_ID_HAPS_HSOTG	0xabc0

static const char dwc2_driver_name[] = "dwc2-pci";

struct dwc2_pci_glue {
	struct platform_device *dwc2;
	struct platform_device *phy;
};

static void dwc2_pci_remove(struct pci_dev *pci)
{
	struct dwc2_pci_glue *glue = pci_get_drvdata(pci);

	platform_device_unregister(glue->dwc2);
	usb_phy_generic_unregister(glue->phy);
	kfree(glue);
	pci_set_drvdata(pci, NULL);
}

static int dwc2_pci_probe(struct pci_dev *pci,
		const struct pci_device_id *id)
{
	struct resource		res[2];
	struct platform_device	*dwc2;
	struct platform_device	*phy;
	int			ret;
	struct device		*dev = &pci->dev;
	struct dwc2_pci_glue	*glue;

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

	pci_set_master(pci);

	dwc2 = platform_device_alloc("dwc2", PLATFORM_DEVID_AUTO);
	if (!dwc2) {
		dev_err(dev, "couldn't allocate dwc2 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	= "dwc2";
	res[0].flags	= IORESOURCE_MEM;

	res[1].start	= pci->irq;
	res[1].name	= "dwc2";
	res[1].flags	= IORESOURCE_IRQ;

	ret = platform_device_add_resources(dwc2, res, ARRAY_SIZE(res));
	if (ret) {
		dev_err(dev, "couldn't add resources to dwc2 device\n");
		return ret;
	}

	dwc2->dev.parent = dev;

	phy = usb_phy_generic_register();
	if (IS_ERR(phy)) {
		dev_err(dev, "error registering generic PHY (%ld)\n",
			PTR_ERR(phy));
		return PTR_ERR(phy);
	}

	ret = platform_device_add(dwc2);
	if (ret) {
		dev_err(dev, "failed to register dwc2 device\n");
		goto err;
	}

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

	glue->phy = phy;
	glue->dwc2 = dwc2;
	pci_set_drvdata(pci, glue);

	return 0;
err:
	usb_phy_generic_unregister(phy);
	platform_device_put(dwc2);
	return ret;
}

static const struct pci_device_id dwc2_pci_ids[] = {
	{
		PCI_DEVICE(PCI_VENDOR_ID_SYNOPSYS, PCI_PRODUCT_ID_HAPS_HSOTG),
	},
	{
		PCI_DEVICE(PCI_VENDOR_ID_STMICRO,
			   PCI_DEVICE_ID_STMICRO_USB_OTG),
	},
	{ /* end: all zeroes */ }
};
MODULE_DEVICE_TABLE(pci, dwc2_pci_ids);

static struct pci_driver dwc2_pci_driver = {
	.name = dwc2_driver_name,
	.id_table = dwc2_pci_ids,
	.probe = dwc2_pci_probe,
	.remove = dwc2_pci_remove,
};

module_pci_driver(dwc2_pci_driver);

MODULE_DESCRIPTION("DESIGNWARE HS OTG PCI Bus Glue");
MODULE_AUTHOR("Synopsys, Inc.");
MODULE_LICENSE("Dual BSD/GPL");
Commit	Line	Data
99882e3f PZ	1	/*
	2	* pci.c - DesignWare HS OTG Controller PCI driver
	3	*
	4	* Copyright (C) 2004-2013 Synopsys, Inc.
	5	*
	6	* Redistribution and use in source and binary forms, with or without
	7	* modification, are permitted provided that the following conditions
	8	* are met:
	9	* 1. Redistributions of source code must retain the above copyright
	10	* notice, this list of conditions, and the following disclaimer,
	11	* without modification.
	12	* 2. Redistributions in binary form must reproduce the above copyright
	13	* notice, this list of conditions and the following disclaimer in the
	14	* documentation and/or other materials provided with the distribution.
	15	* 3. The names of the above-listed copyright holders may not be used
	16	* to endorse or promote products derived from this software without
	17	* specific prior written permission.
	18	*
	19	* ALTERNATIVELY, this software may be distributed under the terms of the
	20	* GNU General Public License ("GPL") as published by the Free Software
	21	* Foundation; either version 2 of the License, or (at your option) any
	22	* later version.
	23	*
	24	* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS
	25	* IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
	26	* THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
	27	* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
	28	* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
	29	* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
	30	* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
	31	* PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
	32	* LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
	33	* NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
	34	* SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
	35	*/
	36
	37	/*
	38	* Provides the initialization and cleanup entry points for the DWC_otg PCI
	39	* driver
	40	*/
	41	#include <linux/kernel.h>
	42	#include <linux/module.h>
	43	#include <linux/moduleparam.h>
	44	#include <linux/spinlock.h>
	45	#include <linux/interrupt.h>
	46	#include <linux/io.h>
	47	#include <linux/slab.h>
	48	#include <linux/pci.h>
	49	#include <linux/usb.h>
	50
	51	#include <linux/usb/hcd.h>
	52	#include <linux/usb/ch11.h>
9024c495 JY	53	#include <linux/platform_device.h>
9024c495 JY	54	#include <linux/usb/usb_phy_generic.h>
99882e3f	55
99882e3f PZ	56	#define PCI_PRODUCT_ID_HAPS_HSOTG 0xabc0
99882e3f PZ	57
9024c495 JY	58	static const char dwc2_driver_name[] = "dwc2-pci";
	59
	60	struct dwc2_pci_glue {
	61	struct platform_device *dwc2;
	62	struct platform_device *phy;
99882e3f PZ	63	};
99882e3f PZ	64
9024c495	65	static void dwc2_pci_remove(struct pci_dev *pci)
99882e3f	66	{
9024c495	67	struct dwc2_pci_glue *glue = pci_get_drvdata(pci);
99882e3f	68
9024c495 JY	69	platform_device_unregister(glue->dwc2);
	70	usb_phy_generic_unregister(glue->phy);
	71	kfree(glue);
	72	pci_set_drvdata(pci, NULL);
99882e3f PZ	73	}
99882e3f PZ	74
9024c495 JY	75	static int dwc2_pci_probe(struct pci_dev *pci,
9024c495 JY	76	const struct pci_device_id *id)
99882e3f	77	{
9024c495 JY	78	struct resource res[2];
	79	struct platform_device *dwc2;
	80	struct platform_device *phy;
	81	int ret;
	82	struct device *dev = &pci->dev;
	83	struct dwc2_pci_glue *glue;
	84
	85	ret = pcim_enable_device(pci);
	86	if (ret) {
	87	dev_err(dev, "failed to enable pci device\n");
	88	return -ENODEV;
	89	}
	90
	91	pci_set_master(pci);
99882e3f	92
9024c495 JY	93	dwc2 = platform_device_alloc("dwc2", PLATFORM_DEVID_AUTO);
	94	if (!dwc2) {
	95	dev_err(dev, "couldn't allocate dwc2 device\n");
99882e3f	96	return -ENOMEM;
9024c495	97	}
99882e3f	98
9024c495	99	memset(res, 0x00, sizeof(struct resource) * ARRAY_SIZE(res));
99882e3f	100
9024c495 JY	101	res[0].start = pci_resource_start(pci, 0);
	102	res[0].end = pci_resource_end(pci, 0);
	103	res[0].name = "dwc2";
	104	res[0].flags = IORESOURCE_MEM;
99882e3f	105
9024c495 JY	106	res[1].start = pci->irq;
	107	res[1].name = "dwc2";
	108	res[1].flags = IORESOURCE_IRQ;
99882e3f	109
9024c495 JY	110	ret = platform_device_add_resources(dwc2, res, ARRAY_SIZE(res));
	111	if (ret) {
	112	dev_err(dev, "couldn't add resources to dwc2 device\n");
	113	return ret;
	114	}
99882e3f	115
9024c495	116	dwc2->dev.parent = dev;
db8178c3	117
9024c495 JY	118	phy = usb_phy_generic_register();
	119	if (IS_ERR(phy)) {
	120	dev_err(dev, "error registering generic PHY (%ld)\n",
	121	PTR_ERR(phy));
	122	return PTR_ERR(phy);
99882e3f PZ	123	}
99882e3f PZ	124
9024c495 JY	125	ret = platform_device_add(dwc2);
	126	if (ret) {
	127	dev_err(dev, "failed to register dwc2 device\n");
	128	goto err;
	129	}
	130
	131	glue = kzalloc(sizeof(*glue), GFP_KERNEL);
	132	if (!glue)
	133	return -ENOMEM;
	134
	135	glue->phy = phy;
	136	glue->dwc2 = dwc2;
	137	pci_set_drvdata(pci, glue);
99882e3f	138
9024c495 JY	139	return 0;
	140	err:
	141	usb_phy_generic_unregister(phy);
	142	platform_device_put(dwc2);
	143	return ret;
99882e3f PZ	144	}
99882e3f PZ	145
41e043fc	146	static const struct pci_device_id dwc2_pci_ids[] = {
99882e3f PZ	147	{
	148	PCI_DEVICE(PCI_VENDOR_ID_SYNOPSYS, PCI_PRODUCT_ID_HAPS_HSOTG),
	149	},
25f73e62 FV	150	{
	151	PCI_DEVICE(PCI_VENDOR_ID_STMICRO,
	152	PCI_DEVICE_ID_STMICRO_USB_OTG),
	153	},
99882e3f PZ	154	{ /* end: all zeroes */ }
	155	};
	156	MODULE_DEVICE_TABLE(pci, dwc2_pci_ids);
	157
	158	static struct pci_driver dwc2_pci_driver = {
	159	.name = dwc2_driver_name,
	160	.id_table = dwc2_pci_ids,
9024c495 JY	161	.probe = dwc2_pci_probe,
9024c495 JY	162	.remove = dwc2_pci_remove,
99882e3f PZ	163	};
	164
	165	module_pci_driver(dwc2_pci_driver);
	166
	167	MODULE_DESCRIPTION("DESIGNWARE HS OTG PCI Bus Glue");
	168	MODULE_AUTHOR("Synopsys, Inc.");
	169	MODULE_LICENSE("Dual BSD/GPL");