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1// SPDX-License-Identifier: GPL-2.0
2/*
3 * ci_hdrc_pci.c - MIPS USB IP core family device controller
4 *
5 * Copyright (C) 2008 Chipidea - MIPS Technologies, Inc. All rights reserved.
6 *
7 * Author: David Lopo
8 */
9
10#include <linux/platform_device.h>
11#include <linux/module.h>
12#include <linux/pci.h>
13#include <linux/interrupt.h>
14#include <linux/usb/gadget.h>
15#include <linux/usb/chipidea.h>
16#include <linux/usb/usb_phy_generic.h>
17
18/* driver name */
19#define UDC_DRIVER_NAME "ci_hdrc_pci"
20
21struct ci_hdrc_pci {
22 struct platform_device *ci;
23 struct platform_device *phy;
24};
25
26/******************************************************************************
27 * PCI block
28 *****************************************************************************/
29static struct ci_hdrc_platform_data pci_platdata = {
30 .name = UDC_DRIVER_NAME,
31 .capoffset = DEF_CAPOFFSET,
32};
33
34static struct ci_hdrc_platform_data langwell_pci_platdata = {
35 .name = UDC_DRIVER_NAME,
36 .capoffset = 0,
37};
38
39static struct ci_hdrc_platform_data penwell_pci_platdata = {
40 .name = UDC_DRIVER_NAME,
41 .capoffset = 0,
42 .power_budget = 200,
43};
44
45/**
46 * ci_hdrc_pci_probe: PCI probe
47 * @pdev: USB device controller being probed
48 * @id: PCI hotplug ID connecting controller to UDC framework
49 *
50 * This function returns an error code
51 * Allocates basic PCI resources for this USB device controller, and then
52 * invokes the udc_probe() method to start the UDC associated with it
53 */
54static int ci_hdrc_pci_probe(struct pci_dev *pdev,
55 const struct pci_device_id *id)
56{
57 struct ci_hdrc_platform_data *platdata = (void *)id->driver_data;
58 struct ci_hdrc_pci *ci;
59 struct resource res[3];
60 int retval = 0, nres = 2;
61
62 if (!platdata) {
63 dev_err(&pdev->dev, "device doesn't provide driver data\n");
64 return -ENODEV;
65 }
66
67 ci = devm_kzalloc(&pdev->dev, sizeof(*ci), GFP_KERNEL);
68 if (!ci)
69 return -ENOMEM;
70
71 retval = pcim_enable_device(pdev);
72 if (retval)
73 return retval;
74
75 if (!pdev->irq) {
76 dev_err(&pdev->dev, "No IRQ, check BIOS/PCI setup!");
77 return -ENODEV;
78 }
79
80 pci_set_master(pdev);
81 pci_try_set_mwi(pdev);
82
83 /* register a nop PHY */
84 ci->phy = usb_phy_generic_register();
85 if (IS_ERR(ci->phy))
86 return PTR_ERR(ci->phy);
87
88 memset(res, 0, sizeof(res));
89 res[0].start = pci_resource_start(pdev, 0);
90 res[0].end = pci_resource_end(pdev, 0);
91 res[0].flags = IORESOURCE_MEM;
92 res[1].start = pdev->irq;
93 res[1].flags = IORESOURCE_IRQ;
94
95 ci->ci = ci_hdrc_add_device(&pdev->dev, res, nres, platdata);
96 if (IS_ERR(ci->ci)) {
97 dev_err(&pdev->dev, "ci_hdrc_add_device failed!\n");
98 usb_phy_generic_unregister(ci->phy);
99 return PTR_ERR(ci->ci);
100 }
101
102 pci_set_drvdata(pdev, ci);
103
104 return 0;
105}
106
107/**
108 * ci_hdrc_pci_remove: PCI remove
109 * @pdev: USB Device Controller being removed
110 *
111 * Reverses the effect of ci_hdrc_pci_probe(),
112 * first invoking the udc_remove() and then releases
113 * all PCI resources allocated for this USB device controller
114 */
115static void ci_hdrc_pci_remove(struct pci_dev *pdev)
116{
117 struct ci_hdrc_pci *ci = pci_get_drvdata(pdev);
118
119 ci_hdrc_remove_device(ci->ci);
120 usb_phy_generic_unregister(ci->phy);
121}
122
123/*
124 * PCI device table
125 * PCI device structure
126 *
127 * Check "pci.h" for details
128 *
129 * Note: ehci-pci driver may try to probe the device first. You have to add an
130 * ID to the bypass_pci_id_table in ehci-pci driver to prevent this.
131 */
132static const struct pci_device_id ci_hdrc_pci_id_table[] = {
133 {
134 PCI_DEVICE(0x153F, 0x1004),
135 .driver_data = (kernel_ulong_t)&pci_platdata,
136 },
137 {
138 PCI_DEVICE(0x153F, 0x1006),
139 .driver_data = (kernel_ulong_t)&pci_platdata,
140 },
141 {
142 PCI_VDEVICE(INTEL, 0x0811),
143 .driver_data = (kernel_ulong_t)&langwell_pci_platdata,
144 },
145 {
146 PCI_VDEVICE(INTEL, 0x0829),
147 .driver_data = (kernel_ulong_t)&penwell_pci_platdata,
148 },
149 {
150 /* Intel Clovertrail */
151 PCI_VDEVICE(INTEL, 0xe006),
152 .driver_data = (kernel_ulong_t)&penwell_pci_platdata,
153 },
154 { 0 } /* end: all zeroes */
155};
156MODULE_DEVICE_TABLE(pci, ci_hdrc_pci_id_table);
157
158static struct pci_driver ci_hdrc_pci_driver = {
159 .name = UDC_DRIVER_NAME,
160 .id_table = ci_hdrc_pci_id_table,
161 .probe = ci_hdrc_pci_probe,
162 .remove = ci_hdrc_pci_remove,
163};
164
165module_pci_driver(ci_hdrc_pci_driver);
166
167MODULE_AUTHOR("MIPS - David Lopo <dlopo@chipidea.mips.com>");
168MODULE_DESCRIPTION("MIPS CI13XXX USB Peripheral Controller");
169MODULE_LICENSE("GPL");
170MODULE_ALIAS("platform:ci13xxx_pci");
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#include <linux/usb/usb_phy_generic.h>
20
21/* driver name */
22#define UDC_DRIVER_NAME "ci_hdrc_pci"
23
24struct ci_hdrc_pci {
25 struct platform_device *ci;
26 struct platform_device *phy;
27};
28
29/******************************************************************************
30 * PCI block
31 *****************************************************************************/
32static struct ci_hdrc_platform_data pci_platdata = {
33 .name = UDC_DRIVER_NAME,
34 .capoffset = DEF_CAPOFFSET,
35};
36
37static struct ci_hdrc_platform_data langwell_pci_platdata = {
38 .name = UDC_DRIVER_NAME,
39 .capoffset = 0,
40};
41
42static struct ci_hdrc_platform_data penwell_pci_platdata = {
43 .name = UDC_DRIVER_NAME,
44 .capoffset = 0,
45 .power_budget = 200,
46};
47
48/**
49 * ci_hdrc_pci_probe: PCI probe
50 * @pdev: USB device controller being probed
51 * @id: PCI hotplug ID connecting controller to UDC framework
52 *
53 * This function returns an error code
54 * Allocates basic PCI resources for this USB device controller, and then
55 * invokes the udc_probe() method to start the UDC associated with it
56 */
57static int ci_hdrc_pci_probe(struct pci_dev *pdev,
58 const struct pci_device_id *id)
59{
60 struct ci_hdrc_platform_data *platdata = (void *)id->driver_data;
61 struct ci_hdrc_pci *ci;
62 struct resource res[3];
63 int retval = 0, nres = 2;
64
65 if (!platdata) {
66 dev_err(&pdev->dev, "device doesn't provide driver data\n");
67 return -ENODEV;
68 }
69
70 ci = devm_kzalloc(&pdev->dev, sizeof(*ci), GFP_KERNEL);
71 if (!ci)
72 return -ENOMEM;
73
74 retval = pcim_enable_device(pdev);
75 if (retval)
76 return retval;
77
78 if (!pdev->irq) {
79 dev_err(&pdev->dev, "No IRQ, check BIOS/PCI setup!");
80 return -ENODEV;
81 }
82
83 pci_set_master(pdev);
84 pci_try_set_mwi(pdev);
85
86 /* register a nop PHY */
87 ci->phy = usb_phy_generic_register();
88 if (IS_ERR(ci->phy))
89 return PTR_ERR(ci->phy);
90
91 memset(res, 0, sizeof(res));
92 res[0].start = pci_resource_start(pdev, 0);
93 res[0].end = pci_resource_end(pdev, 0);
94 res[0].flags = IORESOURCE_MEM;
95 res[1].start = pdev->irq;
96 res[1].flags = IORESOURCE_IRQ;
97
98 ci->ci = ci_hdrc_add_device(&pdev->dev, res, nres, platdata);
99 if (IS_ERR(ci->ci)) {
100 dev_err(&pdev->dev, "ci_hdrc_add_device failed!\n");
101 usb_phy_generic_unregister(ci->phy);
102 return PTR_ERR(ci->ci);
103 }
104
105 pci_set_drvdata(pdev, ci);
106
107 return 0;
108}
109
110/**
111 * ci_hdrc_pci_remove: PCI remove
112 * @pdev: USB Device Controller being removed
113 *
114 * Reverses the effect of ci_hdrc_pci_probe(),
115 * first invoking the udc_remove() and then releases
116 * all PCI resources allocated for this USB device controller
117 */
118static void ci_hdrc_pci_remove(struct pci_dev *pdev)
119{
120 struct ci_hdrc_pci *ci = pci_get_drvdata(pdev);
121
122 ci_hdrc_remove_device(ci->ci);
123 usb_phy_generic_unregister(ci->phy);
124}
125
126/**
127 * PCI device table
128 * PCI device structure
129 *
130 * Check "pci.h" for details
131 *
132 * Note: ehci-pci driver may try to probe the device first. You have to add an
133 * ID to the bypass_pci_id_table in ehci-pci driver to prevent this.
134 */
135static const struct pci_device_id ci_hdrc_pci_id_table[] = {
136 {
137 PCI_DEVICE(0x153F, 0x1004),
138 .driver_data = (kernel_ulong_t)&pci_platdata,
139 },
140 {
141 PCI_DEVICE(0x153F, 0x1006),
142 .driver_data = (kernel_ulong_t)&pci_platdata,
143 },
144 {
145 PCI_VDEVICE(INTEL, 0x0811),
146 .driver_data = (kernel_ulong_t)&langwell_pci_platdata,
147 },
148 {
149 PCI_VDEVICE(INTEL, 0x0829),
150 .driver_data = (kernel_ulong_t)&penwell_pci_platdata,
151 },
152 {
153 /* Intel Clovertrail */
154 PCI_VDEVICE(INTEL, 0xe006),
155 .driver_data = (kernel_ulong_t)&penwell_pci_platdata,
156 },
157 { 0 } /* end: all zeroes */
158};
159MODULE_DEVICE_TABLE(pci, ci_hdrc_pci_id_table);
160
161static struct pci_driver ci_hdrc_pci_driver = {
162 .name = UDC_DRIVER_NAME,
163 .id_table = ci_hdrc_pci_id_table,
164 .probe = ci_hdrc_pci_probe,
165 .remove = ci_hdrc_pci_remove,
166};
167
168module_pci_driver(ci_hdrc_pci_driver);
169
170MODULE_AUTHOR("MIPS - David Lopo <dlopo@chipidea.mips.com>");
171MODULE_DESCRIPTION("MIPS CI13XXX USB Peripheral Controller");
172MODULE_LICENSE("GPL");
173MODULE_VERSION("June 2008");
174MODULE_ALIAS("platform:ci13xxx_pci");