Commit | Line | Data |
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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> |
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> |
ba1aff67 | 19 | #include <linux/usb/usb_phy_generic.h> |
409a15da PK |
20 | |
21 | /* driver name */ | |
8e22978c | 22 | #define UDC_DRIVER_NAME "ci_hdrc_pci" |
409a15da | 23 | |
ba1aff67 AS |
24 | struct ci_hdrc_pci { |
25 | struct platform_device *ci; | |
26 | struct platform_device *phy; | |
27 | }; | |
28 | ||
409a15da PK |
29 | /****************************************************************************** |
30 | * PCI block | |
31 | *****************************************************************************/ | |
8e22978c | 32 | static struct ci_hdrc_platform_data pci_platdata = { |
62bb84ed AS |
33 | .name = UDC_DRIVER_NAME, |
34 | .capoffset = DEF_CAPOFFSET, | |
35 | }; | |
409a15da | 36 | |
8e22978c | 37 | static struct ci_hdrc_platform_data langwell_pci_platdata = { |
f01ef574 | 38 | .name = UDC_DRIVER_NAME, |
62bb84ed | 39 | .capoffset = 0, |
f01ef574 PK |
40 | }; |
41 | ||
8e22978c | 42 | static struct ci_hdrc_platform_data penwell_pci_platdata = { |
bd841986 AS |
43 | .name = UDC_DRIVER_NAME, |
44 | .capoffset = 0, | |
45 | .power_budget = 200, | |
46 | }; | |
47 | ||
409a15da | 48 | /** |
8e22978c | 49 | * ci_hdrc_pci_probe: PCI probe |
409a15da PK |
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 | */ | |
8e22978c | 57 | static int ci_hdrc_pci_probe(struct pci_dev *pdev, |
409a15da PK |
58 | const struct pci_device_id *id) |
59 | { | |
8e22978c | 60 | struct ci_hdrc_platform_data *platdata = (void *)id->driver_data; |
ba1aff67 | 61 | struct ci_hdrc_pci *ci; |
62bb84ed AS |
62 | struct resource res[3]; |
63 | int retval = 0, nres = 2; | |
409a15da | 64 | |
77c4400f | 65 | if (!platdata) { |
1989b5ce AS |
66 | dev_err(&pdev->dev, "device doesn't provide driver data\n"); |
67 | return -ENODEV; | |
68 | } | |
69 | ||
ba1aff67 AS |
70 | ci = devm_kzalloc(&pdev->dev, sizeof(*ci), GFP_KERNEL); |
71 | if (!ci) | |
72 | return -ENOMEM; | |
73 | ||
8b2379b4 | 74 | retval = pcim_enable_device(pdev); |
409a15da | 75 | if (retval) |
8b2379b4 | 76 | return retval; |
409a15da PK |
77 | |
78 | if (!pdev->irq) { | |
79 | dev_err(&pdev->dev, "No IRQ, check BIOS/PCI setup!"); | |
8b2379b4 | 80 | return -ENODEV; |
409a15da PK |
81 | } |
82 | ||
409a15da PK |
83 | pci_set_master(pdev); |
84 | pci_try_set_mwi(pdev); | |
85 | ||
ba1aff67 AS |
86 | /* register a nop PHY */ |
87 | ci->phy = usb_phy_generic_register(); | |
88 | if (!ci->phy) | |
89 | return -ENOMEM; | |
90 | ||
62bb84ed AS |
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 | ||
ba1aff67 AS |
98 | ci->ci = ci_hdrc_add_device(&pdev->dev, res, nres, platdata); |
99 | if (IS_ERR(ci->ci)) { | |
8e22978c | 100 | dev_err(&pdev->dev, "ci_hdrc_add_device failed!\n"); |
ba1aff67 AS |
101 | usb_phy_generic_unregister(ci->phy); |
102 | return PTR_ERR(ci->ci); | |
62bb84ed AS |
103 | } |
104 | ||
ba1aff67 | 105 | pci_set_drvdata(pdev, ci); |
62bb84ed | 106 | |
409a15da | 107 | return 0; |
409a15da PK |
108 | } |
109 | ||
110 | /** | |
8e22978c | 111 | * ci_hdrc_pci_remove: PCI remove |
409a15da PK |
112 | * @pdev: USB Device Controller being removed |
113 | * | |
8e22978c | 114 | * Reverses the effect of ci_hdrc_pci_probe(), |
409a15da PK |
115 | * first invoking the udc_remove() and then releases |
116 | * all PCI resources allocated for this USB device controller | |
117 | */ | |
8e22978c | 118 | static void ci_hdrc_pci_remove(struct pci_dev *pdev) |
409a15da | 119 | { |
ba1aff67 | 120 | struct ci_hdrc_pci *ci = pci_get_drvdata(pdev); |
62bb84ed | 121 | |
ba1aff67 AS |
122 | ci_hdrc_remove_device(ci->ci); |
123 | usb_phy_generic_unregister(ci->phy); | |
409a15da PK |
124 | } |
125 | ||
126 | /** | |
127 | * PCI device table | |
128 | * PCI device structure | |
129 | * | |
130 | * Check "pci.h" for details | |
518ca8d9 AS |
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. | |
409a15da | 134 | */ |
4e065b8b | 135 | static const struct pci_device_id ci_hdrc_pci_id_table[] = { |
62bb84ed AS |
136 | { |
137 | PCI_DEVICE(0x153F, 0x1004), | |
77c4400f | 138 | .driver_data = (kernel_ulong_t)&pci_platdata, |
62bb84ed AS |
139 | }, |
140 | { | |
141 | PCI_DEVICE(0x153F, 0x1006), | |
77c4400f | 142 | .driver_data = (kernel_ulong_t)&pci_platdata, |
62bb84ed AS |
143 | }, |
144 | { | |
145 | PCI_DEVICE(PCI_VENDOR_ID_INTEL, 0x0811), | |
77c4400f | 146 | .driver_data = (kernel_ulong_t)&langwell_pci_platdata, |
62bb84ed AS |
147 | }, |
148 | { | |
149 | PCI_DEVICE(PCI_VENDOR_ID_INTEL, 0x0829), | |
77c4400f | 150 | .driver_data = (kernel_ulong_t)&penwell_pci_platdata, |
62bb84ed | 151 | }, |
a214339d DC |
152 | { |
153 | /* Intel Clovertrail */ | |
154 | PCI_DEVICE(PCI_VENDOR_ID_INTEL, 0xe006), | |
155 | .driver_data = (kernel_ulong_t)&penwell_pci_platdata, | |
156 | }, | |
157 | { 0 } /* end: all zeroes */ | |
409a15da | 158 | }; |
8e22978c | 159 | MODULE_DEVICE_TABLE(pci, ci_hdrc_pci_id_table); |
409a15da | 160 | |
8e22978c | 161 | static struct pci_driver ci_hdrc_pci_driver = { |
409a15da | 162 | .name = UDC_DRIVER_NAME, |
8e22978c AS |
163 | .id_table = ci_hdrc_pci_id_table, |
164 | .probe = ci_hdrc_pci_probe, | |
165 | .remove = ci_hdrc_pci_remove, | |
409a15da PK |
166 | }; |
167 | ||
8e22978c | 168 | module_pci_driver(ci_hdrc_pci_driver); |
409a15da PK |
169 | |
170 | MODULE_AUTHOR("MIPS - David Lopo <dlopo@chipidea.mips.com>"); | |
171 | MODULE_DESCRIPTION("MIPS CI13XXX USB Peripheral Controller"); | |
172 | MODULE_LICENSE("GPL"); | |
173 | MODULE_VERSION("June 2008"); | |
8e22978c | 174 | MODULE_ALIAS("platform:ci13xxx_pci"); |