drivers: clean-up prom.h implicit includes
[deliverable/linux.git] / drivers / usb / host / ohci-ppc-of.c
CommitLineData
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1/*
2 * OHCI HCD (Host Controller Driver) for USB.
3 *
4 * (C) Copyright 1999 Roman Weissgaerber <weissg@vienna.at>
5 * (C) Copyright 2000-2002 David Brownell <dbrownell@users.sourceforge.net>
6 * (C) Copyright 2002 Hewlett-Packard Company
7 * (C) Copyright 2006 Sylvain Munaut <tnt@246tNt.com>
8 *
9 * Bus glue for OHCI HC on the of_platform bus
10 *
11 * Modified for of_platform bus from ohci-sa1111.c
12 *
13 * This file is licenced under the GPL.
14 */
15
16#include <linux/signal.h>
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17#include <linux/of_address.h>
18#include <linux/of_irq.h>
554cc171 19#include <linux/of_platform.h>
495a678f 20
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21#include <asm/prom.h>
22
23
41ac7b3a 24static int
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25ohci_ppc_of_start(struct usb_hcd *hcd)
26{
27 struct ohci_hcd *ohci = hcd_to_ohci(hcd);
28 int ret;
29
30 if ((ret = ohci_init(ohci)) < 0)
31 return ret;
32
33 if ((ret = ohci_run(ohci)) < 0) {
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34 dev_err(hcd->self.controller, "can't start %s\n",
35 hcd->self.bus_name);
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36 ohci_stop(hcd);
37 return ret;
38 }
39
40 return 0;
41}
42
43static const struct hc_driver ohci_ppc_of_hc_driver = {
44 .description = hcd_name,
45 .product_desc = "OF OHCI",
46 .hcd_priv_size = sizeof(struct ohci_hcd),
47
48 /*
49 * generic hardware linkage
50 */
51 .irq = ohci_irq,
52 .flags = HCD_USB11 | HCD_MEMORY,
53
54 /*
55 * basic lifecycle operations
56 */
57 .start = ohci_ppc_of_start,
58 .stop = ohci_stop,
59 .shutdown = ohci_shutdown,
60
61 /*
62 * managing i/o requests and associated device resources
63 */
64 .urb_enqueue = ohci_urb_enqueue,
65 .urb_dequeue = ohci_urb_dequeue,
66 .endpoint_disable = ohci_endpoint_disable,
67
68 /*
69 * scheduling support
70 */
71 .get_frame_number = ohci_get_frame,
72
73 /*
74 * root hub support
75 */
76 .hub_status_data = ohci_hub_status_data,
77 .hub_control = ohci_hub_control,
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78#ifdef CONFIG_PM
79 .bus_suspend = ohci_bus_suspend,
80 .bus_resume = ohci_bus_resume,
81#endif
82 .start_port_reset = ohci_start_port_reset,
83};
84
85
41ac7b3a 86static int ohci_hcd_ppc_of_probe(struct platform_device *op)
495a678f 87{
61c7a080 88 struct device_node *dn = op->dev.of_node;
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89 struct usb_hcd *hcd;
90 struct ohci_hcd *ohci;
91 struct resource res;
92 int irq;
93
94 int rv;
95 int is_bigendian;
796bcae7 96 struct device_node *np;
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97
98 if (usb_disabled())
99 return -ENODEV;
100
101 is_bigendian =
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102 of_device_is_compatible(dn, "ohci-bigendian") ||
103 of_device_is_compatible(dn, "ohci-be");
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104
105 dev_dbg(&op->dev, "initializing PPC-OF USB Controller\n");
106
107 rv = of_address_to_resource(dn, 0, &res);
108 if (rv)
109 return rv;
110
111 hcd = usb_create_hcd(&ohci_ppc_of_hc_driver, &op->dev, "PPC-OF USB");
112 if (!hcd)
113 return -ENOMEM;
114
115 hcd->rsrc_start = res.start;
28f65c11 116 hcd->rsrc_len = resource_size(&res);
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117
118 if (!request_mem_region(hcd->rsrc_start, hcd->rsrc_len, hcd_name)) {
f45ba776 119 printk(KERN_ERR "%s: request_mem_region failed\n", __FILE__);
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120 rv = -EBUSY;
121 goto err_rmr;
122 }
123
124 irq = irq_of_parse_and_map(dn, 0);
125 if (irq == NO_IRQ) {
f45ba776 126 printk(KERN_ERR "%s: irq_of_parse_and_map failed\n", __FILE__);
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127 rv = -EBUSY;
128 goto err_irq;
129 }
130
131 hcd->regs = ioremap(hcd->rsrc_start, hcd->rsrc_len);
132 if (!hcd->regs) {
f45ba776 133 printk(KERN_ERR "%s: ioremap failed\n", __FILE__);
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134 rv = -ENOMEM;
135 goto err_ioremap;
136 }
137
138 ohci = hcd_to_ohci(hcd);
4f45426c 139 if (is_bigendian) {
495a678f 140 ohci->flags |= OHCI_QUIRK_BE_MMIO | OHCI_QUIRK_BE_DESC;
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141 if (of_device_is_compatible(dn, "fsl,mpc5200-ohci"))
142 ohci->flags |= OHCI_QUIRK_FRAME_NO;
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143 if (of_device_is_compatible(dn, "mpc5200-ohci"))
144 ohci->flags |= OHCI_QUIRK_FRAME_NO;
145 }
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146
147 ohci_hcd_init(ohci);
148
b5dd18d8 149 rv = usb_add_hcd(hcd, irq, 0);
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150 if (rv == 0)
151 return 0;
152
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153 /* by now, 440epx is known to show usb_23 erratum */
154 np = of_find_compatible_node(NULL, NULL, "ibm,usb-ehci-440epx");
155
156 /* Work around - At this point ohci_run has executed, the
157 * controller is running, everything, the root ports, etc., is
158 * set up. If the ehci driver is loaded, put the ohci core in
159 * the suspended state. The ehci driver will bring it out of
160 * suspended state when / if a non-high speed USB device is
161 * attached to the USB Host port. If the ehci driver is not
162 * loaded, do nothing. request_mem_region is used to test if
163 * the ehci driver is loaded.
164 */
165 if (np != NULL) {
166 if (!of_address_to_resource(np, 0, &res)) {
167 if (!request_mem_region(res.start, 0x4, hcd_name)) {
168 writel_be((readl_be(&ohci->regs->control) |
169 OHCI_USB_SUSPEND), &ohci->regs->control);
170 (void) readl_be(&ohci->regs->control);
171 } else
172 release_mem_region(res.start, 0x4);
173 } else
f45ba776 174 pr_debug("%s: cannot get ehci offset from fdt\n", __FILE__);
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175 }
176
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177 iounmap(hcd->regs);
178err_ioremap:
179 irq_dispose_mapping(irq);
180err_irq:
181 release_mem_region(hcd->rsrc_start, hcd->rsrc_len);
182err_rmr:
183 usb_put_hcd(hcd);
184
185 return rv;
186}
187
2dc11581 188static int ohci_hcd_ppc_of_remove(struct platform_device *op)
495a678f 189{
477527ba 190 struct usb_hcd *hcd = platform_get_drvdata(op);
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191
192 dev_dbg(&op->dev, "stopping PPC-OF USB Controller\n");
193
194 usb_remove_hcd(hcd);
195
196 iounmap(hcd->regs);
197 irq_dispose_mapping(hcd->irq);
198 release_mem_region(hcd->rsrc_start, hcd->rsrc_len);
199
200 usb_put_hcd(hcd);
201
202 return 0;
203}
204
c4386ad0 205static const struct of_device_id ohci_hcd_ppc_of_match[] = {
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206#ifdef CONFIG_USB_OHCI_HCD_PPC_OF_BE
207 {
208 .name = "usb",
209 .compatible = "ohci-bigendian",
210 },
211 {
212 .name = "usb",
213 .compatible = "ohci-be",
214 },
215#endif
216#ifdef CONFIG_USB_OHCI_HCD_PPC_OF_LE
217 {
218 .name = "usb",
219 .compatible = "ohci-littledian",
220 },
221 {
222 .name = "usb",
223 .compatible = "ohci-le",
224 },
225#endif
226 {},
227};
228MODULE_DEVICE_TABLE(of, ohci_hcd_ppc_of_match);
229
230#if !defined(CONFIG_USB_OHCI_HCD_PPC_OF_BE) && \
231 !defined(CONFIG_USB_OHCI_HCD_PPC_OF_LE)
1c1301dd 232#error "No endianness selected for ppc-of-ohci"
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233#endif
234
235
d35fb641 236static struct platform_driver ohci_hcd_ppc_of_driver = {
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237 .probe = ohci_hcd_ppc_of_probe,
238 .remove = ohci_hcd_ppc_of_remove,
aaf6b52d 239 .shutdown = usb_hcd_platform_shutdown,
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240 .driver = {
241 .name = "ppc-of-ohci",
242 .owner = THIS_MODULE,
243 .of_match_table = ohci_hcd_ppc_of_match,
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244 },
245};
246
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