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 | * | |
8 | * Bus Glue for AMD Alchemy Au1xxx | |
9 | * | |
10 | * Written by Christopher Hoover <ch@hpl.hp.com> | |
ac310bb5 | 11 | * Based on fragments of previous driver by Russell King et al. |
1da177e4 LT |
12 | * |
13 | * Modified for LH7A404 from ohci-sa1111.c | |
14 | * by Durgesh Pattamatta <pattamattad@sharpsec.com> | |
15 | * Modified for AMD Alchemy Au1xxx | |
16 | * by Matt Porter <mporter@kernel.crashing.org> | |
17 | * | |
18 | * This file is licenced under the GPL. | |
19 | */ | |
20 | ||
d052d1be | 21 | #include <linux/platform_device.h> |
de25968c | 22 | #include <linux/signal.h> |
d052d1be | 23 | |
1da177e4 LT |
24 | #include <asm/mach-au1x00/au1000.h> |
25 | ||
d5fb7f1b | 26 | |
1da177e4 LT |
27 | extern int usb_disabled(void); |
28 | ||
53c81a34 | 29 | static int __devinit ohci_au1xxx_start(struct usb_hcd *hcd) |
1da177e4 | 30 | { |
53c81a34 ML |
31 | struct ohci_hcd *ohci = hcd_to_ohci(hcd); |
32 | int ret; | |
1da177e4 | 33 | |
53c81a34 | 34 | ohci_dbg(ohci, "ohci_au1xxx_start, ohci:%p", ohci); |
1da177e4 | 35 | |
53c81a34 | 36 | if ((ret = ohci_init(ohci)) < 0) |
1da177e4 LT |
37 | return ret; |
38 | ||
53c81a34 | 39 | if ((ret = ohci_run(ohci)) < 0) { |
3b1f1ad6 PG |
40 | dev_err(hcd->self.controller, "can't start %s", |
41 | hcd->self.bus_name); | |
53c81a34 | 42 | ohci_stop(hcd); |
1da177e4 LT |
43 | return ret; |
44 | } | |
45 | ||
46 | return 0; | |
47 | } | |
48 | ||
1da177e4 LT |
49 | static const struct hc_driver ohci_au1xxx_hc_driver = { |
50 | .description = hcd_name, | |
51 | .product_desc = "Au1xxx OHCI", | |
52 | .hcd_priv_size = sizeof(struct ohci_hcd), | |
53 | ||
54 | /* | |
55 | * generic hardware linkage | |
56 | */ | |
57 | .irq = ohci_irq, | |
58 | .flags = HCD_USB11 | HCD_MEMORY, | |
59 | ||
60 | /* | |
61 | * basic lifecycle operations | |
62 | */ | |
63 | .start = ohci_au1xxx_start, | |
1da177e4 | 64 | .stop = ohci_stop, |
dd9048af | 65 | .shutdown = ohci_shutdown, |
1da177e4 LT |
66 | |
67 | /* | |
68 | * managing i/o requests and associated device resources | |
69 | */ | |
70 | .urb_enqueue = ohci_urb_enqueue, | |
71 | .urb_dequeue = ohci_urb_dequeue, | |
72 | .endpoint_disable = ohci_endpoint_disable, | |
73 | ||
74 | /* | |
75 | * scheduling support | |
76 | */ | |
77 | .get_frame_number = ohci_get_frame, | |
78 | ||
79 | /* | |
80 | * root hub support | |
81 | */ | |
82 | .hub_status_data = ohci_hub_status_data, | |
83 | .hub_control = ohci_hub_control, | |
9293677a | 84 | #ifdef CONFIG_PM |
0c0382e3 AS |
85 | .bus_suspend = ohci_bus_suspend, |
86 | .bus_resume = ohci_bus_resume, | |
9293677a DB |
87 | #endif |
88 | .start_port_reset = ohci_start_port_reset, | |
1da177e4 LT |
89 | }; |
90 | ||
3ae5eaec | 91 | static int ohci_hcd_au1xxx_drv_probe(struct platform_device *pdev) |
1da177e4 | 92 | { |
809f36c6 | 93 | int ret, unit; |
53c81a34 | 94 | struct usb_hcd *hcd; |
1da177e4 LT |
95 | |
96 | if (usb_disabled()) | |
97 | return -ENODEV; | |
98 | ||
53c81a34 ML |
99 | if (pdev->resource[1].flags != IORESOURCE_IRQ) { |
100 | pr_debug("resource[1] is not IORESOURCE_IRQ\n"); | |
101 | return -ENOMEM; | |
102 | } | |
103 | ||
104 | hcd = usb_create_hcd(&ohci_au1xxx_hc_driver, &pdev->dev, "au1xxx"); | |
105 | if (!hcd) | |
106 | return -ENOMEM; | |
107 | ||
108 | hcd->rsrc_start = pdev->resource[0].start; | |
109 | hcd->rsrc_len = pdev->resource[0].end - pdev->resource[0].start + 1; | |
110 | ||
111 | if (!request_mem_region(hcd->rsrc_start, hcd->rsrc_len, hcd_name)) { | |
112 | pr_debug("request_mem_region failed\n"); | |
113 | ret = -EBUSY; | |
114 | goto err1; | |
115 | } | |
116 | ||
117 | hcd->regs = ioremap(hcd->rsrc_start, hcd->rsrc_len); | |
118 | if (!hcd->regs) { | |
119 | pr_debug("ioremap failed\n"); | |
120 | ret = -ENOMEM; | |
121 | goto err2; | |
122 | } | |
123 | ||
809f36c6 ML |
124 | unit = (hcd->rsrc_start == AU1300_USB_OHCI1_PHYS_ADDR) ? |
125 | ALCHEMY_USB_OHCI1 : ALCHEMY_USB_OHCI0; | |
126 | if (alchemy_usb_control(unit, 1)) { | |
ce6bc922 ML |
127 | printk(KERN_INFO "%s: controller init failed!\n", pdev->name); |
128 | ret = -ENODEV; | |
129 | goto err3; | |
130 | } | |
131 | ||
53c81a34 ML |
132 | ohci_hcd_init(hcd_to_ohci(hcd)); |
133 | ||
134 | ret = usb_add_hcd(hcd, pdev->resource[1].start, | |
b5dd18d8 | 135 | IRQF_SHARED); |
53c81a34 ML |
136 | if (ret == 0) { |
137 | platform_set_drvdata(pdev, hcd); | |
138 | return ret; | |
139 | } | |
140 | ||
809f36c6 | 141 | alchemy_usb_control(unit, 0); |
ce6bc922 | 142 | err3: |
53c81a34 ML |
143 | iounmap(hcd->regs); |
144 | err2: | |
145 | release_mem_region(hcd->rsrc_start, hcd->rsrc_len); | |
146 | err1: | |
147 | usb_put_hcd(hcd); | |
1da177e4 LT |
148 | return ret; |
149 | } | |
150 | ||
3ae5eaec | 151 | static int ohci_hcd_au1xxx_drv_remove(struct platform_device *pdev) |
1da177e4 | 152 | { |
3ae5eaec | 153 | struct usb_hcd *hcd = platform_get_drvdata(pdev); |
809f36c6 | 154 | int unit; |
1da177e4 | 155 | |
809f36c6 ML |
156 | unit = (hcd->rsrc_start == AU1300_USB_OHCI1_PHYS_ADDR) ? |
157 | ALCHEMY_USB_OHCI1 : ALCHEMY_USB_OHCI0; | |
53c81a34 | 158 | usb_remove_hcd(hcd); |
809f36c6 | 159 | alchemy_usb_control(unit, 0); |
53c81a34 ML |
160 | iounmap(hcd->regs); |
161 | release_mem_region(hcd->rsrc_start, hcd->rsrc_len); | |
162 | usb_put_hcd(hcd); | |
163 | platform_set_drvdata(pdev, NULL); | |
164 | ||
1da177e4 LT |
165 | return 0; |
166 | } | |
53c81a34 | 167 | |
42bfc7b4 | 168 | #ifdef CONFIG_PM |
807fcb5e | 169 | static int ohci_hcd_au1xxx_drv_suspend(struct device *dev) |
1da177e4 | 170 | { |
807fcb5e | 171 | struct usb_hcd *hcd = dev_get_drvdata(dev); |
42bfc7b4 ML |
172 | struct ohci_hcd *ohci = hcd_to_ohci(hcd); |
173 | unsigned long flags; | |
174 | int rc; | |
175 | ||
176 | rc = 0; | |
177 | ||
178 | /* Root hub was already suspended. Disable irq emission and | |
179 | * mark HW unaccessible, bail out if RH has been resumed. Use | |
180 | * the spinlock to properly synchronize with possible pending | |
181 | * RH suspend or resume activity. | |
42bfc7b4 ML |
182 | */ |
183 | spin_lock_irqsave(&ohci->lock, flags); | |
b7463c71 | 184 | if (ohci->rh_state != OHCI_RH_SUSPENDED) { |
42bfc7b4 ML |
185 | rc = -EINVAL; |
186 | goto bail; | |
187 | } | |
188 | ohci_writel(ohci, OHCI_INTR_MIE, &ohci->regs->intrdisable); | |
189 | (void)ohci_readl(ohci, &ohci->regs->intrdisable); | |
1da177e4 | 190 | |
42bfc7b4 ML |
191 | clear_bit(HCD_FLAG_HW_ACCESSIBLE, &hcd->flags); |
192 | ||
ce6bc922 | 193 | alchemy_usb_control(ALCHEMY_USB_OHCI0, 0); |
42bfc7b4 ML |
194 | bail: |
195 | spin_unlock_irqrestore(&ohci->lock, flags); | |
196 | ||
197 | return rc; | |
1da177e4 | 198 | } |
42bfc7b4 | 199 | |
807fcb5e | 200 | static int ohci_hcd_au1xxx_drv_resume(struct device *dev) |
1da177e4 | 201 | { |
807fcb5e | 202 | struct usb_hcd *hcd = dev_get_drvdata(dev); |
42bfc7b4 | 203 | |
ce6bc922 | 204 | alchemy_usb_control(ALCHEMY_USB_OHCI0, 1); |
42bfc7b4 ML |
205 | |
206 | set_bit(HCD_FLAG_HW_ACCESSIBLE, &hcd->flags); | |
207 | ohci_finish_controller_resume(hcd); | |
1da177e4 LT |
208 | |
209 | return 0; | |
210 | } | |
807fcb5e | 211 | |
47145210 | 212 | static const struct dev_pm_ops au1xxx_ohci_pmops = { |
807fcb5e ML |
213 | .suspend = ohci_hcd_au1xxx_drv_suspend, |
214 | .resume = ohci_hcd_au1xxx_drv_resume, | |
215 | }; | |
216 | ||
217 | #define AU1XXX_OHCI_PMOPS &au1xxx_ohci_pmops | |
218 | ||
42bfc7b4 | 219 | #else |
807fcb5e | 220 | #define AU1XXX_OHCI_PMOPS NULL |
42bfc7b4 | 221 | #endif |
1da177e4 | 222 | |
3ae5eaec | 223 | static struct platform_driver ohci_hcd_au1xxx_driver = { |
1da177e4 LT |
224 | .probe = ohci_hcd_au1xxx_drv_probe, |
225 | .remove = ohci_hcd_au1xxx_drv_remove, | |
dd9048af | 226 | .shutdown = usb_hcd_platform_shutdown, |
3ae5eaec RK |
227 | .driver = { |
228 | .name = "au1xxx-ohci", | |
229 | .owner = THIS_MODULE, | |
807fcb5e | 230 | .pm = AU1XXX_OHCI_PMOPS, |
3ae5eaec | 231 | }, |
1da177e4 LT |
232 | }; |
233 | ||
f4fce61d | 234 | MODULE_ALIAS("platform:au1xxx-ohci"); |