[mirror_ubuntu-jammy-kernel.git] / drivers / usb / dwc2 / pci.c

// SPDX-License-Identifier: (GPL-2.0+ OR BSD-3-Clause)
/*
 * 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 int dwc2_pci_quirks(struct pci_dev *pdev, struct platform_device *dwc2)
{
	if (pdev->vendor == PCI_VENDOR_ID_SYNOPSYS &&
	    pdev->device == PCI_PRODUCT_ID_HAPS_HSOTG) {
		struct property_entry properties[] = {
			{ },
		};

		return platform_device_add_properties(dwc2, properties);
	}

	return 0;
}

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 = dwc2_pci_quirks(pci, dwc2);
	if (ret)
		goto err;

	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
5fd54ace	1	// SPDX-License-Identifier: (GPL-2.0+ OR BSD-3-Clause)
99882e3f PZ	2	/*
	3	* pci.c - DesignWare HS OTG Controller PCI driver
	4	*
	5	* Copyright (C) 2004-2013 Synopsys, Inc.
	6	*
	7	* Redistribution and use in source and binary forms, with or without
	8	* modification, are permitted provided that the following conditions
	9	* are met:
	10	* 1. Redistributions of source code must retain the above copyright
	11	* notice, this list of conditions, and the following disclaimer,
	12	* without modification.
	13	* 2. Redistributions in binary form must reproduce the above copyright
	14	* notice, this list of conditions and the following disclaimer in the
	15	* documentation and/or other materials provided with the distribution.
	16	* 3. The names of the above-listed copyright holders may not be used
	17	* to endorse or promote products derived from this software without
	18	* specific prior written permission.
	19	*
	20	* ALTERNATIVELY, this software may be distributed under the terms of the
	21	* GNU General Public License ("GPL") as published by the Free Software
	22	* Foundation; either version 2 of the License, or (at your option) any
	23	* later version.
	24	*
	25	* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS
	26	* IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
	27	* THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
	28	* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
	29	* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
	30	* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
	31	* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
	32	* PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
	33	* LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
	34	* NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
	35	* SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
	36	*/
	37
	38	/*
	39	* Provides the initialization and cleanup entry points for the DWC_otg PCI
	40	* driver
	41	*/
	42	#include <linux/kernel.h>
	43	#include <linux/module.h>
	44	#include <linux/moduleparam.h>
	45	#include <linux/spinlock.h>
	46	#include <linux/interrupt.h>
	47	#include <linux/io.h>
	48	#include <linux/slab.h>
	49	#include <linux/pci.h>
	50	#include <linux/usb.h>
	51
	52	#include <linux/usb/hcd.h>
	53	#include <linux/usb/ch11.h>
9024c495 JY	54	#include <linux/platform_device.h>
9024c495 JY	55	#include <linux/usb/usb_phy_generic.h>
99882e3f	56
99882e3f PZ	57	#define PCI_PRODUCT_ID_HAPS_HSOTG 0xabc0
99882e3f PZ	58
9024c495 JY	59	static const char dwc2_driver_name[] = "dwc2-pci";
	60
	61	struct dwc2_pci_glue {
	62	struct platform_device *dwc2;
	63	struct platform_device *phy;
99882e3f PZ	64	};
99882e3f PZ	65
ced8a03c VA	66	static int dwc2_pci_quirks(struct pci_dev pdev, struct platform_device dwc2)
	67	{
	68	if (pdev->vendor == PCI_VENDOR_ID_SYNOPSYS &&
	69	pdev->device == PCI_PRODUCT_ID_HAPS_HSOTG) {
	70	struct property_entry properties[] = {
ced8a03c VA	71	{ },
	72	};
	73
	74	return platform_device_add_properties(dwc2, properties);
	75	}
	76
	77	return 0;
	78	}
	79
9024c495	80	static void dwc2_pci_remove(struct pci_dev *pci)
99882e3f	81	{
9024c495	82	struct dwc2_pci_glue *glue = pci_get_drvdata(pci);
99882e3f	83
9024c495 JY	84	platform_device_unregister(glue->dwc2);
	85	usb_phy_generic_unregister(glue->phy);
	86	kfree(glue);
	87	pci_set_drvdata(pci, NULL);
99882e3f PZ	88	}
99882e3f PZ	89
9024c495	90	static int dwc2_pci_probe(struct pci_dev *pci,
9da51974	91	const struct pci_device_id *id)
99882e3f	92	{
9024c495 JY	93	struct resource res[2];
	94	struct platform_device *dwc2;
	95	struct platform_device *phy;
	96	int ret;
	97	struct device *dev = &pci->dev;
	98	struct dwc2_pci_glue *glue;
	99
	100	ret = pcim_enable_device(pci);
	101	if (ret) {
	102	dev_err(dev, "failed to enable pci device\n");
	103	return -ENODEV;
	104	}
	105
	106	pci_set_master(pci);
99882e3f	107
9024c495 JY	108	dwc2 = platform_device_alloc("dwc2", PLATFORM_DEVID_AUTO);
	109	if (!dwc2) {
	110	dev_err(dev, "couldn't allocate dwc2 device\n");
99882e3f	111	return -ENOMEM;
9024c495	112	}
99882e3f	113
9024c495	114	memset(res, 0x00, sizeof(struct resource) * ARRAY_SIZE(res));
99882e3f	115
9024c495 JY	116	res[0].start = pci_resource_start(pci, 0);
	117	res[0].end = pci_resource_end(pci, 0);
	118	res[0].name = "dwc2";
	119	res[0].flags = IORESOURCE_MEM;
99882e3f	120
9024c495 JY	121	res[1].start = pci->irq;
	122	res[1].name = "dwc2";
	123	res[1].flags = IORESOURCE_IRQ;
99882e3f	124
9024c495 JY	125	ret = platform_device_add_resources(dwc2, res, ARRAY_SIZE(res));
	126	if (ret) {
	127	dev_err(dev, "couldn't add resources to dwc2 device\n");
	128	return ret;
	129	}
99882e3f	130
9024c495	131	dwc2->dev.parent = dev;
db8178c3	132
9024c495 JY	133	phy = usb_phy_generic_register();
	134	if (IS_ERR(phy)) {
	135	dev_err(dev, "error registering generic PHY (%ld)\n",
	136	PTR_ERR(phy));
	137	return PTR_ERR(phy);
99882e3f PZ	138	}
99882e3f PZ	139
ced8a03c VA	140	ret = dwc2_pci_quirks(pci, dwc2);
	141	if (ret)
	142	goto err;
	143
9024c495 JY	144	ret = platform_device_add(dwc2);
	145	if (ret) {
	146	dev_err(dev, "failed to register dwc2 device\n");
	147	goto err;
	148	}
	149
	150	glue = kzalloc(sizeof(*glue), GFP_KERNEL);
	151	if (!glue)
	152	return -ENOMEM;
	153
	154	glue->phy = phy;
	155	glue->dwc2 = dwc2;
	156	pci_set_drvdata(pci, glue);
99882e3f	157
9024c495 JY	158	return 0;
	159	err:
	160	usb_phy_generic_unregister(phy);
	161	platform_device_put(dwc2);
	162	return ret;
99882e3f PZ	163	}
99882e3f PZ	164
41e043fc	165	static const struct pci_device_id dwc2_pci_ids[] = {
99882e3f PZ	166	{
	167	PCI_DEVICE(PCI_VENDOR_ID_SYNOPSYS, PCI_PRODUCT_ID_HAPS_HSOTG),
	168	},
25f73e62 FV	169	{
	170	PCI_DEVICE(PCI_VENDOR_ID_STMICRO,
	171	PCI_DEVICE_ID_STMICRO_USB_OTG),
	172	},
99882e3f PZ	173	{ /* end: all zeroes */ }
	174	};
	175	MODULE_DEVICE_TABLE(pci, dwc2_pci_ids);
	176
	177	static struct pci_driver dwc2_pci_driver = {
	178	.name = dwc2_driver_name,
	179	.id_table = dwc2_pci_ids,
9024c495 JY	180	.probe = dwc2_pci_probe,
9024c495 JY	181	.remove = dwc2_pci_remove,
99882e3f PZ	182	};
	183
	184	module_pci_driver(dwc2_pci_driver);
	185
	186	MODULE_DESCRIPTION("DESIGNWARE HS OTG PCI Bus Glue");
	187	MODULE_AUTHOR("Synopsys, Inc.");
	188	MODULE_LICENSE("Dual BSD/GPL");