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495a678f SM |
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> | |
17 | ||
18 | #include <asm/of_platform.h> | |
19 | #include <asm/prom.h> | |
20 | ||
21 | ||
22 | static int __devinit | |
23 | ohci_ppc_of_start(struct usb_hcd *hcd) | |
24 | { | |
25 | struct ohci_hcd *ohci = hcd_to_ohci(hcd); | |
26 | int ret; | |
27 | ||
28 | if ((ret = ohci_init(ohci)) < 0) | |
29 | return ret; | |
30 | ||
31 | if ((ret = ohci_run(ohci)) < 0) { | |
32 | err("can't start %s", ohci_to_hcd(ohci)->self.bus_name); | |
33 | ohci_stop(hcd); | |
34 | return ret; | |
35 | } | |
36 | ||
37 | return 0; | |
38 | } | |
39 | ||
40 | static const struct hc_driver ohci_ppc_of_hc_driver = { | |
41 | .description = hcd_name, | |
42 | .product_desc = "OF OHCI", | |
43 | .hcd_priv_size = sizeof(struct ohci_hcd), | |
44 | ||
45 | /* | |
46 | * generic hardware linkage | |
47 | */ | |
48 | .irq = ohci_irq, | |
49 | .flags = HCD_USB11 | HCD_MEMORY, | |
50 | ||
51 | /* | |
52 | * basic lifecycle operations | |
53 | */ | |
54 | .start = ohci_ppc_of_start, | |
55 | .stop = ohci_stop, | |
56 | .shutdown = ohci_shutdown, | |
57 | ||
58 | /* | |
59 | * managing i/o requests and associated device resources | |
60 | */ | |
61 | .urb_enqueue = ohci_urb_enqueue, | |
62 | .urb_dequeue = ohci_urb_dequeue, | |
63 | .endpoint_disable = ohci_endpoint_disable, | |
64 | ||
65 | /* | |
66 | * scheduling support | |
67 | */ | |
68 | .get_frame_number = ohci_get_frame, | |
69 | ||
70 | /* | |
71 | * root hub support | |
72 | */ | |
73 | .hub_status_data = ohci_hub_status_data, | |
74 | .hub_control = ohci_hub_control, | |
09ca8adb | 75 | .hub_irq_enable = ohci_rhsc_enable, |
495a678f SM |
76 | #ifdef CONFIG_PM |
77 | .bus_suspend = ohci_bus_suspend, | |
78 | .bus_resume = ohci_bus_resume, | |
79 | #endif | |
80 | .start_port_reset = ohci_start_port_reset, | |
81 | }; | |
82 | ||
83 | ||
84 | static int __devinit | |
85 | ohci_hcd_ppc_of_probe(struct of_device *op, const struct of_device_id *match) | |
86 | { | |
87 | struct device_node *dn = op->node; | |
88 | struct usb_hcd *hcd; | |
89 | struct ohci_hcd *ohci; | |
90 | struct resource res; | |
91 | int irq; | |
92 | ||
93 | int rv; | |
94 | int is_bigendian; | |
95 | ||
96 | if (usb_disabled()) | |
97 | return -ENODEV; | |
98 | ||
99 | is_bigendian = | |
55b61fec SR |
100 | of_device_is_compatible(dn, "ohci-bigendian") || |
101 | of_device_is_compatible(dn, "ohci-be"); | |
495a678f SM |
102 | |
103 | dev_dbg(&op->dev, "initializing PPC-OF USB Controller\n"); | |
104 | ||
105 | rv = of_address_to_resource(dn, 0, &res); | |
106 | if (rv) | |
107 | return rv; | |
108 | ||
109 | hcd = usb_create_hcd(&ohci_ppc_of_hc_driver, &op->dev, "PPC-OF USB"); | |
110 | if (!hcd) | |
111 | return -ENOMEM; | |
112 | ||
113 | hcd->rsrc_start = res.start; | |
114 | hcd->rsrc_len = res.end - res.start + 1; | |
115 | ||
116 | if (!request_mem_region(hcd->rsrc_start, hcd->rsrc_len, hcd_name)) { | |
117 | printk(KERN_ERR __FILE__ ": request_mem_region failed\n"); | |
118 | rv = -EBUSY; | |
119 | goto err_rmr; | |
120 | } | |
121 | ||
122 | irq = irq_of_parse_and_map(dn, 0); | |
123 | if (irq == NO_IRQ) { | |
124 | printk(KERN_ERR __FILE__ ": irq_of_parse_and_map failed\n"); | |
125 | rv = -EBUSY; | |
126 | goto err_irq; | |
127 | } | |
128 | ||
129 | hcd->regs = ioremap(hcd->rsrc_start, hcd->rsrc_len); | |
130 | if (!hcd->regs) { | |
131 | printk(KERN_ERR __FILE__ ": ioremap failed\n"); | |
132 | rv = -ENOMEM; | |
133 | goto err_ioremap; | |
134 | } | |
135 | ||
136 | ohci = hcd_to_ohci(hcd); | |
4f45426c | 137 | if (is_bigendian) { |
495a678f | 138 | ohci->flags |= OHCI_QUIRK_BE_MMIO | OHCI_QUIRK_BE_DESC; |
66ffbe49 GL |
139 | if (of_device_is_compatible(dn, "fsl,mpc5200-ohci")) |
140 | ohci->flags |= OHCI_QUIRK_FRAME_NO; | |
4f45426c VB |
141 | if (of_device_is_compatible(dn, "mpc5200-ohci")) |
142 | ohci->flags |= OHCI_QUIRK_FRAME_NO; | |
143 | } | |
495a678f SM |
144 | |
145 | ohci_hcd_init(ohci); | |
146 | ||
442258e2 | 147 | rv = usb_add_hcd(hcd, irq, IRQF_DISABLED); |
495a678f SM |
148 | if (rv == 0) |
149 | return 0; | |
150 | ||
151 | iounmap(hcd->regs); | |
152 | err_ioremap: | |
153 | irq_dispose_mapping(irq); | |
154 | err_irq: | |
155 | release_mem_region(hcd->rsrc_start, hcd->rsrc_len); | |
156 | err_rmr: | |
157 | usb_put_hcd(hcd); | |
158 | ||
159 | return rv; | |
160 | } | |
161 | ||
162 | static int ohci_hcd_ppc_of_remove(struct of_device *op) | |
163 | { | |
164 | struct usb_hcd *hcd = dev_get_drvdata(&op->dev); | |
165 | dev_set_drvdata(&op->dev, NULL); | |
166 | ||
167 | dev_dbg(&op->dev, "stopping PPC-OF USB Controller\n"); | |
168 | ||
169 | usb_remove_hcd(hcd); | |
170 | ||
171 | iounmap(hcd->regs); | |
172 | irq_dispose_mapping(hcd->irq); | |
173 | release_mem_region(hcd->rsrc_start, hcd->rsrc_len); | |
174 | ||
175 | usb_put_hcd(hcd); | |
176 | ||
177 | return 0; | |
178 | } | |
179 | ||
180 | static int ohci_hcd_ppc_of_shutdown(struct of_device *op) | |
181 | { | |
182 | struct usb_hcd *hcd = dev_get_drvdata(&op->dev); | |
183 | ||
184 | if (hcd->driver->shutdown) | |
185 | hcd->driver->shutdown(hcd); | |
186 | ||
187 | return 0; | |
188 | } | |
189 | ||
190 | ||
191 | static struct of_device_id ohci_hcd_ppc_of_match[] = { | |
192 | #ifdef CONFIG_USB_OHCI_HCD_PPC_OF_BE | |
193 | { | |
194 | .name = "usb", | |
195 | .compatible = "ohci-bigendian", | |
196 | }, | |
197 | { | |
198 | .name = "usb", | |
199 | .compatible = "ohci-be", | |
200 | }, | |
201 | #endif | |
202 | #ifdef CONFIG_USB_OHCI_HCD_PPC_OF_LE | |
203 | { | |
204 | .name = "usb", | |
205 | .compatible = "ohci-littledian", | |
206 | }, | |
207 | { | |
208 | .name = "usb", | |
209 | .compatible = "ohci-le", | |
210 | }, | |
211 | #endif | |
212 | {}, | |
213 | }; | |
214 | MODULE_DEVICE_TABLE(of, ohci_hcd_ppc_of_match); | |
215 | ||
216 | #if !defined(CONFIG_USB_OHCI_HCD_PPC_OF_BE) && \ | |
217 | !defined(CONFIG_USB_OHCI_HCD_PPC_OF_LE) | |
218 | #error "No endianess selected for ppc-of-ohci" | |
219 | #endif | |
220 | ||
221 | ||
222 | static struct of_platform_driver ohci_hcd_ppc_of_driver = { | |
223 | .name = "ppc-of-ohci", | |
224 | .match_table = ohci_hcd_ppc_of_match, | |
225 | .probe = ohci_hcd_ppc_of_probe, | |
226 | .remove = ohci_hcd_ppc_of_remove, | |
227 | .shutdown = ohci_hcd_ppc_of_shutdown, | |
228 | #ifdef CONFIG_PM | |
229 | /*.suspend = ohci_hcd_ppc_soc_drv_suspend,*/ | |
230 | /*.resume = ohci_hcd_ppc_soc_drv_resume,*/ | |
231 | #endif | |
232 | .driver = { | |
233 | .name = "ppc-of-ohci", | |
234 | .owner = THIS_MODULE, | |
235 | }, | |
236 | }; | |
237 |