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. | |
dd9048af | 8 | * |
1da177e4 LT |
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 | 74 | ohci = hcd_to_ohci(hcd); |
11d1a4aa | 75 | ohci->flags |= OHCI_QUIRK_BE_MMIO | OHCI_QUIRK_BE_DESC; |
4f45426c VB |
76 | |
77 | #ifdef CONFIG_PPC_MPC52xx | |
78 | /* MPC52xx doesn't need frame_no shift */ | |
79 | ohci->flags |= OHCI_QUIRK_FRAME_NO; | |
80 | #endif | |
1da177e4 LT |
81 | ohci_hcd_init(ohci); |
82 | ||
d54b5caa | 83 | retval = usb_add_hcd(hcd, irq, IRQF_DISABLED); |
1da177e4 LT |
84 | if (retval == 0) |
85 | return retval; | |
86 | ||
87 | pr_debug("Removing PPC-SOC USB Controller\n"); | |
4fbd55f0 | 88 | |
1da177e4 LT |
89 | iounmap(hcd->regs); |
90 | err2: | |
91 | release_mem_region(hcd->rsrc_start, hcd->rsrc_len); | |
92 | err1: | |
dd9048af | 93 | usb_put_hcd(hcd); |
1da177e4 LT |
94 | return retval; |
95 | } | |
96 | ||
97 | ||
98 | /* may be called without controller electrically present */ | |
99 | /* may be called with controller, bus, and devices active */ | |
100 | ||
101 | /** | |
102 | * usb_hcd_ppc_soc_remove - shutdown processing for On-Chip HCDs | |
103 | * @pdev: USB Host Controller being removed | |
104 | * Context: !in_interrupt() | |
105 | * | |
4fbd55f0 DF |
106 | * Reverses the effect of usb_hcd_ppc_soc_probe(). |
107 | * It is always called from a thread | |
1da177e4 LT |
108 | * context, normally "rmmod", "apmd", or something similar. |
109 | * | |
110 | */ | |
111 | static void usb_hcd_ppc_soc_remove(struct usb_hcd *hcd, | |
112 | struct platform_device *pdev) | |
113 | { | |
1da177e4 LT |
114 | usb_remove_hcd(hcd); |
115 | ||
116 | pr_debug("stopping PPC-SOC USB Controller\n"); | |
1da177e4 LT |
117 | |
118 | iounmap(hcd->regs); | |
119 | release_mem_region(hcd->rsrc_start, hcd->rsrc_len); | |
e52b1d3a | 120 | usb_put_hcd(hcd); |
1da177e4 LT |
121 | } |
122 | ||
123 | static int __devinit | |
124 | ohci_ppc_soc_start(struct usb_hcd *hcd) | |
125 | { | |
126 | struct ohci_hcd *ohci = hcd_to_ohci(hcd); | |
127 | int ret; | |
128 | ||
129 | if ((ret = ohci_init(ohci)) < 0) | |
130 | return ret; | |
131 | ||
132 | if ((ret = ohci_run(ohci)) < 0) { | |
133 | err("can't start %s", ohci_to_hcd(ohci)->self.bus_name); | |
134 | ohci_stop(hcd); | |
135 | return ret; | |
136 | } | |
137 | ||
138 | return 0; | |
139 | } | |
140 | ||
141 | static const struct hc_driver ohci_ppc_soc_hc_driver = { | |
142 | .description = hcd_name, | |
143 | .hcd_priv_size = sizeof(struct ohci_hcd), | |
144 | ||
145 | /* | |
146 | * generic hardware linkage | |
147 | */ | |
148 | .irq = ohci_irq, | |
149 | .flags = HCD_USB11 | HCD_MEMORY, | |
150 | ||
151 | /* | |
152 | * basic lifecycle operations | |
153 | */ | |
154 | .start = ohci_ppc_soc_start, | |
155 | .stop = ohci_stop, | |
dd9048af | 156 | .shutdown = ohci_shutdown, |
1da177e4 LT |
157 | |
158 | /* | |
159 | * managing i/o requests and associated device resources | |
160 | */ | |
161 | .urb_enqueue = ohci_urb_enqueue, | |
162 | .urb_dequeue = ohci_urb_dequeue, | |
163 | .endpoint_disable = ohci_endpoint_disable, | |
164 | ||
165 | /* | |
166 | * scheduling support | |
167 | */ | |
168 | .get_frame_number = ohci_get_frame, | |
169 | ||
170 | /* | |
171 | * root hub support | |
172 | */ | |
173 | .hub_status_data = ohci_hub_status_data, | |
174 | .hub_control = ohci_hub_control, | |
09ca8adb | 175 | .hub_irq_enable = ohci_rhsc_enable, |
8ad7fe16 | 176 | #ifdef CONFIG_PM |
0c0382e3 AS |
177 | .bus_suspend = ohci_bus_suspend, |
178 | .bus_resume = ohci_bus_resume, | |
1da177e4 LT |
179 | #endif |
180 | .start_port_reset = ohci_start_port_reset, | |
181 | }; | |
182 | ||
3ae5eaec | 183 | static int ohci_hcd_ppc_soc_drv_probe(struct platform_device *pdev) |
1da177e4 | 184 | { |
1da177e4 LT |
185 | int ret; |
186 | ||
187 | if (usb_disabled()) | |
188 | return -ENODEV; | |
189 | ||
190 | ret = usb_hcd_ppc_soc_probe(&ohci_ppc_soc_hc_driver, pdev); | |
191 | return ret; | |
192 | } | |
193 | ||
3ae5eaec | 194 | static int ohci_hcd_ppc_soc_drv_remove(struct platform_device *pdev) |
1da177e4 | 195 | { |
2463ade2 | 196 | struct usb_hcd *hcd = platform_get_drvdata(pdev); |
1da177e4 LT |
197 | |
198 | usb_hcd_ppc_soc_remove(hcd, pdev); | |
199 | return 0; | |
200 | } | |
201 | ||
3ae5eaec | 202 | static struct platform_driver ohci_hcd_ppc_soc_driver = { |
1da177e4 LT |
203 | .probe = ohci_hcd_ppc_soc_drv_probe, |
204 | .remove = ohci_hcd_ppc_soc_drv_remove, | |
dd9048af | 205 | .shutdown = usb_hcd_platform_shutdown, |
8ad7fe16 | 206 | #ifdef CONFIG_PM |
1da177e4 LT |
207 | /*.suspend = ohci_hcd_ppc_soc_drv_suspend,*/ |
208 | /*.resume = ohci_hcd_ppc_soc_drv_resume,*/ | |
209 | #endif | |
3ae5eaec RK |
210 | .driver = { |
211 | .name = "ppc-soc-ohci", | |
212 | .owner = THIS_MODULE, | |
213 | }, | |
1da177e4 LT |
214 | }; |
215 | ||
f4fce61d | 216 | MODULE_ALIAS("platform:ppc-soc-ohci"); |