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409a15da PK |
1 | /* |
2 | * ci13xxx_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 | ||
62bb84ed | 13 | #include <linux/platform_device.h> |
409a15da PK |
14 | #include <linux/module.h> |
15 | #include <linux/pci.h> | |
62bb84ed AS |
16 | #include <linux/interrupt.h> |
17 | #include <linux/usb/gadget.h> | |
e443b333 | 18 | #include <linux/usb/chipidea.h> |
409a15da PK |
19 | |
20 | /* driver name */ | |
21 | #define UDC_DRIVER_NAME "ci13xxx_pci" | |
22 | ||
23 | /****************************************************************************** | |
24 | * PCI block | |
25 | *****************************************************************************/ | |
62bb84ed AS |
26 | struct ci13xxx_udc_driver pci_driver = { |
27 | .name = UDC_DRIVER_NAME, | |
28 | .capoffset = DEF_CAPOFFSET, | |
29 | }; | |
409a15da | 30 | |
62bb84ed | 31 | struct ci13xxx_udc_driver langwell_pci_driver = { |
f01ef574 | 32 | .name = UDC_DRIVER_NAME, |
62bb84ed | 33 | .capoffset = 0, |
f01ef574 PK |
34 | }; |
35 | ||
409a15da PK |
36 | /** |
37 | * ci13xxx_pci_probe: PCI probe | |
38 | * @pdev: USB device controller being probed | |
39 | * @id: PCI hotplug ID connecting controller to UDC framework | |
40 | * | |
41 | * This function returns an error code | |
42 | * Allocates basic PCI resources for this USB device controller, and then | |
43 | * invokes the udc_probe() method to start the UDC associated with it | |
44 | */ | |
45 | static int __devinit ci13xxx_pci_probe(struct pci_dev *pdev, | |
46 | const struct pci_device_id *id) | |
47 | { | |
62bb84ed AS |
48 | struct ci13xxx_udc_driver *driver = (void *)id->driver_data; |
49 | struct platform_device *plat_ci; | |
50 | struct resource res[3]; | |
51 | int retval = 0, nres = 2; | |
409a15da | 52 | |
1989b5ce AS |
53 | if (!driver) { |
54 | dev_err(&pdev->dev, "device doesn't provide driver data\n"); | |
55 | return -ENODEV; | |
56 | } | |
57 | ||
409a15da PK |
58 | retval = pci_enable_device(pdev); |
59 | if (retval) | |
60 | goto done; | |
61 | ||
62 | if (!pdev->irq) { | |
63 | dev_err(&pdev->dev, "No IRQ, check BIOS/PCI setup!"); | |
64 | retval = -ENODEV; | |
65 | goto disable_device; | |
66 | } | |
67 | ||
62bb84ed | 68 | pci_set_power_state(pdev, PCI_D0); |
409a15da PK |
69 | pci_set_master(pdev); |
70 | pci_try_set_mwi(pdev); | |
71 | ||
62bb84ed AS |
72 | plat_ci = platform_device_alloc("ci_udc", -1); |
73 | if (!plat_ci) { | |
74 | dev_err(&pdev->dev, "can't allocate ci_udc platform device\n"); | |
75 | retval = -ENOMEM; | |
76 | goto disable_device; | |
77 | } | |
f9df8395 | 78 | |
62bb84ed AS |
79 | memset(res, 0, sizeof(res)); |
80 | res[0].start = pci_resource_start(pdev, 0); | |
81 | res[0].end = pci_resource_end(pdev, 0); | |
82 | res[0].flags = IORESOURCE_MEM; | |
83 | res[1].start = pdev->irq; | |
84 | res[1].flags = IORESOURCE_IRQ; | |
85 | ||
86 | retval = platform_device_add_resources(plat_ci, res, nres); | |
87 | if (retval) { | |
88 | dev_err(&pdev->dev, "can't add resources to platform device\n"); | |
89 | goto put_platform; | |
90 | } | |
91 | ||
92 | retval = platform_device_add_data(plat_ci, driver, sizeof(*driver)); | |
409a15da | 93 | if (retval) |
62bb84ed | 94 | goto put_platform; |
409a15da | 95 | |
62bb84ed AS |
96 | dma_set_coherent_mask(&plat_ci->dev, pdev->dev.coherent_dma_mask); |
97 | plat_ci->dev.dma_mask = pdev->dev.dma_mask; | |
98 | plat_ci->dev.dma_parms = pdev->dev.dma_parms; | |
99 | plat_ci->dev.parent = &pdev->dev; | |
409a15da | 100 | |
62bb84ed AS |
101 | pci_set_drvdata(pdev, plat_ci); |
102 | ||
103 | retval = platform_device_add(plat_ci); | |
409a15da | 104 | if (retval) |
62bb84ed | 105 | goto put_platform; |
409a15da PK |
106 | |
107 | return 0; | |
108 | ||
62bb84ed AS |
109 | put_platform: |
110 | pci_set_drvdata(pdev, NULL); | |
111 | platform_device_put(plat_ci); | |
409a15da PK |
112 | disable_device: |
113 | pci_disable_device(pdev); | |
114 | done: | |
115 | return retval; | |
116 | } | |
117 | ||
118 | /** | |
119 | * ci13xxx_pci_remove: PCI remove | |
120 | * @pdev: USB Device Controller being removed | |
121 | * | |
122 | * Reverses the effect of ci13xxx_pci_probe(), | |
123 | * first invoking the udc_remove() and then releases | |
124 | * all PCI resources allocated for this USB device controller | |
125 | */ | |
126 | static void __devexit ci13xxx_pci_remove(struct pci_dev *pdev) | |
127 | { | |
62bb84ed AS |
128 | struct platform_device *plat_ci = pci_get_drvdata(pdev); |
129 | ||
130 | platform_device_unregister(plat_ci); | |
131 | pci_set_drvdata(pdev, NULL); | |
409a15da PK |
132 | pci_disable_device(pdev); |
133 | } | |
134 | ||
135 | /** | |
136 | * PCI device table | |
137 | * PCI device structure | |
138 | * | |
139 | * Check "pci.h" for details | |
140 | */ | |
141 | static DEFINE_PCI_DEVICE_TABLE(ci13xxx_pci_id_table) = { | |
62bb84ed AS |
142 | { |
143 | PCI_DEVICE(0x153F, 0x1004), | |
144 | .driver_data = (kernel_ulong_t)&pci_driver, | |
145 | }, | |
146 | { | |
147 | PCI_DEVICE(0x153F, 0x1006), | |
148 | .driver_data = (kernel_ulong_t)&pci_driver, | |
149 | }, | |
150 | { | |
151 | PCI_DEVICE(PCI_VENDOR_ID_INTEL, 0x0811), | |
152 | .driver_data = (kernel_ulong_t)&langwell_pci_driver, | |
153 | }, | |
154 | { | |
155 | PCI_DEVICE(PCI_VENDOR_ID_INTEL, 0x0829), | |
156 | .driver_data = (kernel_ulong_t)&langwell_pci_driver, | |
157 | }, | |
409a15da PK |
158 | { 0, 0, 0, 0, 0, 0, 0 /* end: all zeroes */ } |
159 | }; | |
160 | MODULE_DEVICE_TABLE(pci, ci13xxx_pci_id_table); | |
161 | ||
162 | static struct pci_driver ci13xxx_pci_driver = { | |
163 | .name = UDC_DRIVER_NAME, | |
164 | .id_table = ci13xxx_pci_id_table, | |
165 | .probe = ci13xxx_pci_probe, | |
166 | .remove = __devexit_p(ci13xxx_pci_remove), | |
167 | }; | |
168 | ||
3cdb7721 | 169 | module_pci_driver(ci13xxx_pci_driver); |
409a15da PK |
170 | |
171 | MODULE_AUTHOR("MIPS - David Lopo <dlopo@chipidea.mips.com>"); | |
172 | MODULE_DESCRIPTION("MIPS CI13XXX USB Peripheral Controller"); | |
173 | MODULE_LICENSE("GPL"); | |
174 | MODULE_VERSION("June 2008"); |