USB: ohci whitespace/comment fixups
[linux-2.6.git] / drivers / usb / host / ohci-ppc-soc.c
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 2003-2005 MontaVista Software Inc.
8  *
9  * Bus Glue for PPC On-Chip OHCI driver
10  * Tested on Freescale MPC5200 and IBM STB04xxx
11  *
12  * Modified by Dale Farnsworth <dale@farnsworth.org> from ohci-sa1111.c
13  *
14  * This file is licenced under the GPL.
15  */
16
17 #include <linux/platform_device.h>
18 #include <linux/signal.h>
19
20 /* configure so an HC device and id are always provided */
21 /* always called with process context; sleeping is OK */
22
23 /**
24  * usb_hcd_ppc_soc_probe - initialize On-Chip HCDs
25  * Context: !in_interrupt()
26  *
27  * Allocates basic resources for this USB host controller.
28  *
29  * Store this function in the HCD's struct pci_driver as probe().
30  */
31 static int usb_hcd_ppc_soc_probe(const struct hc_driver *driver,
32                           struct platform_device *pdev)
33 {
34         int retval;
35         struct usb_hcd *hcd;
36         struct ohci_hcd *ohci;
37         struct resource *res;
38         int irq;
39
40         pr_debug("initializing PPC-SOC USB Controller\n");
41
42         res = platform_get_resource(pdev, IORESOURCE_IRQ, 0);
43         if (!res) {
44                 pr_debug(__FILE__ ": no irq\n");
45                 return -ENODEV;
46         }
47         irq = res->start;
48
49         res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
50         if (!res) {
51                 pr_debug(__FILE__ ": no reg addr\n");
52                 return -ENODEV;
53         }
54
55         hcd = usb_create_hcd(driver, &pdev->dev, "PPC-SOC USB");
56         if (!hcd)
57                 return -ENOMEM;
58         hcd->rsrc_start = res->start;
59         hcd->rsrc_len = res->end - res->start + 1;
60
61         if (!request_mem_region(hcd->rsrc_start, hcd->rsrc_len, hcd_name)) {
62                 pr_debug(__FILE__ ": request_mem_region failed\n");
63                 retval = -EBUSY;
64                 goto err1;
65         }
66
67         hcd->regs = ioremap(hcd->rsrc_start, hcd->rsrc_len);
68         if (!hcd->regs) {
69                 pr_debug(__FILE__ ": ioremap failed\n");
70                 retval = -ENOMEM;
71                 goto err2;
72         }
73
74         ohci = hcd_to_ohci(hcd);
75         ohci->flags |= OHCI_BIG_ENDIAN;
76         ohci_hcd_init(ohci);
77
78         retval = usb_add_hcd(hcd, irq, IRQF_DISABLED);
79         if (retval == 0)
80                 return retval;
81
82         pr_debug("Removing PPC-SOC USB Controller\n");
83
84         iounmap(hcd->regs);
85  err2:
86         release_mem_region(hcd->rsrc_start, hcd->rsrc_len);
87  err1:
88         usb_put_hcd(hcd);
89         return retval;
90 }
91
92
93 /* may be called without controller electrically present */
94 /* may be called with controller, bus, and devices active */
95
96 /**
97  * usb_hcd_ppc_soc_remove - shutdown processing for On-Chip HCDs
98  * @pdev: USB Host Controller being removed
99  * Context: !in_interrupt()
100  *
101  * Reverses the effect of usb_hcd_ppc_soc_probe().
102  * It is always called from a thread
103  * context, normally "rmmod", "apmd", or something similar.
104  *
105  */
106 static void usb_hcd_ppc_soc_remove(struct usb_hcd *hcd,
107                 struct platform_device *pdev)
108 {
109         usb_remove_hcd(hcd);
110
111         pr_debug("stopping PPC-SOC USB Controller\n");
112
113         iounmap(hcd->regs);
114         release_mem_region(hcd->rsrc_start, hcd->rsrc_len);
115         usb_put_hcd(hcd);
116 }
117
118 static int __devinit
119 ohci_ppc_soc_start(struct usb_hcd *hcd)
120 {
121         struct ohci_hcd *ohci = hcd_to_ohci(hcd);
122         int             ret;
123
124         if ((ret = ohci_init(ohci)) < 0)
125                 return ret;
126
127         if ((ret = ohci_run(ohci)) < 0) {
128                 err("can't start %s", ohci_to_hcd(ohci)->self.bus_name);
129                 ohci_stop(hcd);
130                 return ret;
131         }
132
133         return 0;
134 }
135
136 static const struct hc_driver ohci_ppc_soc_hc_driver = {
137         .description =          hcd_name,
138         .hcd_priv_size =        sizeof(struct ohci_hcd),
139
140         /*
141          * generic hardware linkage
142          */
143         .irq =                  ohci_irq,
144         .flags =                HCD_USB11 | HCD_MEMORY,
145
146         /*
147          * basic lifecycle operations
148          */
149         .start =                ohci_ppc_soc_start,
150         .stop =                 ohci_stop,
151         .shutdown =             ohci_shutdown,
152
153         /*
154          * managing i/o requests and associated device resources
155          */
156         .urb_enqueue =          ohci_urb_enqueue,
157         .urb_dequeue =          ohci_urb_dequeue,
158         .endpoint_disable =     ohci_endpoint_disable,
159
160         /*
161          * scheduling support
162          */
163         .get_frame_number =     ohci_get_frame,
164
165         /*
166          * root hub support
167          */
168         .hub_status_data =      ohci_hub_status_data,
169         .hub_control =          ohci_hub_control,
170         .hub_irq_enable =       ohci_rhsc_enable,
171 #ifdef  CONFIG_PM
172         .bus_suspend =          ohci_bus_suspend,
173         .bus_resume =           ohci_bus_resume,
174 #endif
175         .start_port_reset =     ohci_start_port_reset,
176 };
177
178 static int ohci_hcd_ppc_soc_drv_probe(struct platform_device *pdev)
179 {
180         int ret;
181
182         if (usb_disabled())
183                 return -ENODEV;
184
185         ret = usb_hcd_ppc_soc_probe(&ohci_ppc_soc_hc_driver, pdev);
186         return ret;
187 }
188
189 static int ohci_hcd_ppc_soc_drv_remove(struct platform_device *pdev)
190 {
191         struct usb_hcd *hcd = platform_get_drvdata(pdev);
192
193         usb_hcd_ppc_soc_remove(hcd, pdev);
194         return 0;
195 }
196
197 static struct platform_driver ohci_hcd_ppc_soc_driver = {
198         .probe          = ohci_hcd_ppc_soc_drv_probe,
199         .remove         = ohci_hcd_ppc_soc_drv_remove,
200         .shutdown       = usb_hcd_platform_shutdown,
201 #ifdef  CONFIG_PM
202         /*.suspend      = ohci_hcd_ppc_soc_drv_suspend,*/
203         /*.resume       = ohci_hcd_ppc_soc_drv_resume,*/
204 #endif
205         .driver         = {
206                 .name   = "ppc-soc-ohci",
207                 .owner  = THIS_MODULE,
208         },
209 };
210
211 static int __init ohci_hcd_ppc_soc_init(void)
212 {
213         pr_debug(DRIVER_INFO " (PPC SOC)\n");
214         pr_debug("block sizes: ed %d td %d\n", sizeof(struct ed),
215                                                         sizeof(struct td));
216
217         return platform_driver_register(&ohci_hcd_ppc_soc_driver);
218 }
219
220 static void __exit ohci_hcd_ppc_soc_cleanup(void)
221 {
222         platform_driver_unregister(&ohci_hcd_ppc_soc_driver);
223 }
224
225 module_init(ohci_hcd_ppc_soc_init);
226 module_exit(ohci_hcd_ppc_soc_cleanup);