Commit | Line | Data |
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1da177e4 LT |
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 | ||
d052d1be | 17 | #include <linux/platform_device.h> |
de25968c | 18 | #include <linux/signal.h> |
d052d1be | 19 | |
1da177e4 LT |
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 | * | |
4fbd55f0 | 27 | * Allocates basic resources for this USB host controller. |
1da177e4 LT |
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; | |
1da177e4 LT |
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 | ||
1da177e4 LT |
74 | ohci = hcd_to_ohci(hcd); |
75 | ohci->flags |= OHCI_BIG_ENDIAN; | |
76 | ohci_hcd_init(ohci); | |
77 | ||
d54b5caa | 78 | retval = usb_add_hcd(hcd, irq, IRQF_DISABLED); |
1da177e4 LT |
79 | if (retval == 0) |
80 | return retval; | |
81 | ||
82 | pr_debug("Removing PPC-SOC USB Controller\n"); | |
4fbd55f0 | 83 | |
1da177e4 LT |
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 | * | |
4fbd55f0 DF |
101 | * Reverses the effect of usb_hcd_ppc_soc_probe(). |
102 | * It is always called from a thread | |
1da177e4 LT |
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 | { | |
1da177e4 LT |
109 | usb_remove_hcd(hcd); |
110 | ||
111 | pr_debug("stopping PPC-SOC USB Controller\n"); | |
1da177e4 LT |
112 | |
113 | iounmap(hcd->regs); | |
114 | release_mem_region(hcd->rsrc_start, hcd->rsrc_len); | |
e52b1d3a | 115 | usb_put_hcd(hcd); |
1da177e4 LT |
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, | |
64a21d02 | 151 | .shutdown = ohci_shutdown, |
1da177e4 LT |
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, | |
d413984a | 170 | .hub_irq_enable = ohci_rhsc_enable, |
8ad7fe16 | 171 | #ifdef CONFIG_PM |
0c0382e3 AS |
172 | .bus_suspend = ohci_bus_suspend, |
173 | .bus_resume = ohci_bus_resume, | |
1da177e4 LT |
174 | #endif |
175 | .start_port_reset = ohci_start_port_reset, | |
176 | }; | |
177 | ||
3ae5eaec | 178 | static int ohci_hcd_ppc_soc_drv_probe(struct platform_device *pdev) |
1da177e4 | 179 | { |
1da177e4 LT |
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 | ||
3ae5eaec | 189 | static int ohci_hcd_ppc_soc_drv_remove(struct platform_device *pdev) |
1da177e4 | 190 | { |
2463ade2 | 191 | struct usb_hcd *hcd = platform_get_drvdata(pdev); |
1da177e4 LT |
192 | |
193 | usb_hcd_ppc_soc_remove(hcd, pdev); | |
194 | return 0; | |
195 | } | |
196 | ||
3ae5eaec | 197 | static struct platform_driver ohci_hcd_ppc_soc_driver = { |
1da177e4 LT |
198 | .probe = ohci_hcd_ppc_soc_drv_probe, |
199 | .remove = ohci_hcd_ppc_soc_drv_remove, | |
64a21d02 | 200 | .shutdown = usb_hcd_platform_shutdown, |
8ad7fe16 | 201 | #ifdef CONFIG_PM |
1da177e4 LT |
202 | /*.suspend = ohci_hcd_ppc_soc_drv_suspend,*/ |
203 | /*.resume = ohci_hcd_ppc_soc_drv_resume,*/ | |
204 | #endif | |
3ae5eaec RK |
205 | .driver = { |
206 | .name = "ppc-soc-ohci", | |
207 | .owner = THIS_MODULE, | |
208 | }, | |
1da177e4 LT |
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 | ||
3ae5eaec | 217 | return platform_driver_register(&ohci_hcd_ppc_soc_driver); |
1da177e4 LT |
218 | } |
219 | ||
220 | static void __exit ohci_hcd_ppc_soc_cleanup(void) | |
221 | { | |
3ae5eaec | 222 | platform_driver_unregister(&ohci_hcd_ppc_soc_driver); |
1da177e4 LT |
223 | } |
224 | ||
225 | module_init(ohci_hcd_ppc_soc_init); | |
226 | module_exit(ohci_hcd_ppc_soc_cleanup); |