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1/*
2 * Generic platform ohci driver
3 *
4 * Copyright 2007 Michael Buesch <m@bues.ch>
5 * Copyright 2011-2012 Hauke Mehrtens <hauke@hauke-m.de>
6 * Copyright 2014 Hans de Goede <hdegoede@redhat.com>
7 *
8 * Derived from the OCHI-SSB driver
9 * Derived from the OHCI-PCI driver
10 * Copyright 1999 Roman Weissgaerber
11 * Copyright 2000-2002 David Brownell
12 * Copyright 1999 Linus Torvalds
13 * Copyright 1999 Gregory P. Smith
14 *
15 * Licensed under the GNU/GPL. See COPYING for details.
16 */
17
18#include <linux/clk.h>
19#include <linux/dma-mapping.h>
20#include <linux/hrtimer.h>
21#include <linux/io.h>
22#include <linux/kernel.h>
23#include <linux/module.h>
24#include <linux/err.h>
25#include <linux/phy/phy.h>
26#include <linux/platform_device.h>
27#include <linux/usb/ohci_pdriver.h>
28#include <linux/usb.h>
29#include <linux/usb/hcd.h>
30
31#include "ohci.h"
32
33#define DRIVER_DESC "OHCI generic platform driver"
34#define OHCI_MAX_CLKS 3
35#define hcd_to_ohci_priv(h) ((struct ohci_platform_priv *)hcd_to_ohci(h)->priv)
36
37struct ohci_platform_priv {
38 struct clk *clks[OHCI_MAX_CLKS];
39 struct phy *phy;
40};
41
42static const char hcd_name[] = "ohci-platform";
43
44static int ohci_platform_reset(struct usb_hcd *hcd)
45{
46 struct platform_device *pdev = to_platform_device(hcd->self.controller);
47 struct usb_ohci_pdata *pdata = dev_get_platdata(&pdev->dev);
48 struct ohci_hcd *ohci = hcd_to_ohci(hcd);
49
50 if (pdata->no_big_frame_no)
51 ohci->flags |= OHCI_QUIRK_FRAME_NO;
52 if (pdata->num_ports)
53 ohci->num_ports = pdata->num_ports;
54
55 return ohci_setup(hcd);
56}
57
58static int ohci_platform_power_on(struct platform_device *dev)
59{
60 struct usb_hcd *hcd = platform_get_drvdata(dev);
61 struct ohci_platform_priv *priv = hcd_to_ohci_priv(hcd);
62 int clk, ret;
63
64 for (clk = 0; clk < OHCI_MAX_CLKS && priv->clks[clk]; clk++) {
65 ret = clk_prepare_enable(priv->clks[clk]);
66 if (ret)
67 goto err_disable_clks;
68 }
69
70 if (priv->phy) {
71 ret = phy_init(priv->phy);
72 if (ret)
73 goto err_disable_clks;
74
75 ret = phy_power_on(priv->phy);
76 if (ret)
77 goto err_exit_phy;
78 }
79
80 return 0;
81
82err_exit_phy:
83 phy_exit(priv->phy);
84err_disable_clks:
85 while (--clk >= 0)
86 clk_disable_unprepare(priv->clks[clk]);
87
88 return ret;
89}
90
91static void ohci_platform_power_off(struct platform_device *dev)
92{
93 struct usb_hcd *hcd = platform_get_drvdata(dev);
94 struct ohci_platform_priv *priv = hcd_to_ohci_priv(hcd);
95 int clk;
96
97 if (priv->phy) {
98 phy_power_off(priv->phy);
99 phy_exit(priv->phy);
100 }
101
102 for (clk = OHCI_MAX_CLKS - 1; clk >= 0; clk--)
103 if (priv->clks[clk])
104 clk_disable_unprepare(priv->clks[clk]);
105}
106
107static struct hc_driver __read_mostly ohci_platform_hc_driver;
108
109static const struct ohci_driver_overrides platform_overrides __initconst = {
110 .product_desc = "Generic Platform OHCI controller",
111 .reset = ohci_platform_reset,
112 .extra_priv_size = sizeof(struct ohci_platform_priv),
113};
114
115static struct usb_ohci_pdata ohci_platform_defaults = {
116 .power_on = ohci_platform_power_on,
117 .power_suspend = ohci_platform_power_off,
118 .power_off = ohci_platform_power_off,
119};
120
121static int ohci_platform_probe(struct platform_device *dev)
122{
123 struct usb_hcd *hcd;
124 struct resource *res_mem;
125 struct usb_ohci_pdata *pdata = dev_get_platdata(&dev->dev);
126 struct ohci_platform_priv *priv;
127 struct ohci_hcd *ohci;
128 int err, irq, clk = 0;
129
130 if (usb_disabled())
131 return -ENODEV;
132
133 /*
134 * Use reasonable defaults so platforms don't have to provide these
135 * with DT probing on ARM.
136 */
137 if (!pdata)
138 pdata = &ohci_platform_defaults;
139
140 err = dma_coerce_mask_and_coherent(&dev->dev, DMA_BIT_MASK(32));
141 if (err)
142 return err;
143
144 irq = platform_get_irq(dev, 0);
145 if (irq < 0) {
146 dev_err(&dev->dev, "no irq provided");
147 return irq;
148 }
149
150 res_mem = platform_get_resource(dev, IORESOURCE_MEM, 0);
151 if (!res_mem) {
152 dev_err(&dev->dev, "no memory resource provided");
153 return -ENXIO;
154 }
155
156 hcd = usb_create_hcd(&ohci_platform_hc_driver, &dev->dev,
157 dev_name(&dev->dev));
158 if (!hcd)
159 return -ENOMEM;
160
161 platform_set_drvdata(dev, hcd);
162 dev->dev.platform_data = pdata;
163 priv = hcd_to_ohci_priv(hcd);
164 ohci = hcd_to_ohci(hcd);
165
166 if (pdata == &ohci_platform_defaults && dev->dev.of_node) {
167 if (of_property_read_bool(dev->dev.of_node, "big-endian-regs"))
168 ohci->flags |= OHCI_QUIRK_BE_MMIO;
169
170 if (of_property_read_bool(dev->dev.of_node, "big-endian-desc"))
171 ohci->flags |= OHCI_QUIRK_BE_DESC;
172
173 if (of_property_read_bool(dev->dev.of_node, "big-endian"))
174 ohci->flags |= OHCI_QUIRK_BE_MMIO | OHCI_QUIRK_BE_DESC;
175
176 priv->phy = devm_phy_get(&dev->dev, "usb");
177 if (IS_ERR(priv->phy)) {
178 err = PTR_ERR(priv->phy);
179 if (err == -EPROBE_DEFER)
180 goto err_put_hcd;
181 priv->phy = NULL;
182 }
183
184 for (clk = 0; clk < OHCI_MAX_CLKS; clk++) {
185 priv->clks[clk] = of_clk_get(dev->dev.of_node, clk);
186 if (IS_ERR(priv->clks[clk])) {
187 err = PTR_ERR(priv->clks[clk]);
188 if (err == -EPROBE_DEFER)
189 goto err_put_clks;
190 priv->clks[clk] = NULL;
191 break;
192 }
193 }
194 }
195
196 if (pdata->big_endian_desc)
197 ohci->flags |= OHCI_QUIRK_BE_DESC;
198 if (pdata->big_endian_mmio)
199 ohci->flags |= OHCI_QUIRK_BE_MMIO;
200
201#ifndef CONFIG_USB_OHCI_BIG_ENDIAN_MMIO
202 if (ohci->flags & OHCI_QUIRK_BE_MMIO) {
203 dev_err(&dev->dev,
204 "Error: CONFIG_USB_OHCI_BIG_ENDIAN_MMIO not set\n");
205 err = -EINVAL;
206 goto err_put_clks;
207 }
208#endif
209#ifndef CONFIG_USB_OHCI_BIG_ENDIAN_DESC
210 if (ohci->flags & OHCI_QUIRK_BE_DESC) {
211 dev_err(&dev->dev,
212 "Error: CONFIG_USB_OHCI_BIG_ENDIAN_DESC not set\n");
213 err = -EINVAL;
214 goto err_put_clks;
215 }
216#endif
217
218 if (pdata->power_on) {
219 err = pdata->power_on(dev);
220 if (err < 0)
221 goto err_put_clks;
222 }
223
224 hcd->rsrc_start = res_mem->start;
225 hcd->rsrc_len = resource_size(res_mem);
226
227 hcd->regs = devm_ioremap_resource(&dev->dev, res_mem);
228 if (IS_ERR(hcd->regs)) {
229 err = PTR_ERR(hcd->regs);
230 goto err_power;
231 }
232 err = usb_add_hcd(hcd, irq, IRQF_SHARED);
233 if (err)
234 goto err_power;
235
236 device_wakeup_enable(hcd->self.controller);
237
238 platform_set_drvdata(dev, hcd);
239
240 return err;
241
242err_power:
243 if (pdata->power_off)
244 pdata->power_off(dev);
245err_put_clks:
246 while (--clk >= 0)
247 clk_put(priv->clks[clk]);
248err_put_hcd:
249 if (pdata == &ohci_platform_defaults)
250 dev->dev.platform_data = NULL;
251
252 usb_put_hcd(hcd);
253
254 return err;
255}
256
257static int ohci_platform_remove(struct platform_device *dev)
258{
259 struct usb_hcd *hcd = platform_get_drvdata(dev);
260 struct usb_ohci_pdata *pdata = dev_get_platdata(&dev->dev);
261 struct ohci_platform_priv *priv = hcd_to_ohci_priv(hcd);
262 int clk;
263
264 usb_remove_hcd(hcd);
265
266 if (pdata->power_off)
267 pdata->power_off(dev);
268
269 for (clk = 0; clk < OHCI_MAX_CLKS && priv->clks[clk]; clk++)
270 clk_put(priv->clks[clk]);
271
272 usb_put_hcd(hcd);
273
274 if (pdata == &ohci_platform_defaults)
275 dev->dev.platform_data = NULL;
276
277 return 0;
278}
279
280#ifdef CONFIG_PM
281
282static int ohci_platform_suspend(struct device *dev)
283{
284 struct usb_hcd *hcd = dev_get_drvdata(dev);
285 struct usb_ohci_pdata *pdata = dev->platform_data;
286 struct platform_device *pdev =
287 container_of(dev, struct platform_device, dev);
288 bool do_wakeup = device_may_wakeup(dev);
289 int ret;
290
291 ret = ohci_suspend(hcd, do_wakeup);
292 if (ret)
293 return ret;
294
295 if (pdata->power_suspend)
296 pdata->power_suspend(pdev);
297
298 return ret;
299}
300
301static int ohci_platform_resume(struct device *dev)
302{
303 struct usb_hcd *hcd = dev_get_drvdata(dev);
304 struct usb_ohci_pdata *pdata = dev_get_platdata(dev);
305 struct platform_device *pdev =
306 container_of(dev, struct platform_device, dev);
307
308 if (pdata->power_on) {
309 int err = pdata->power_on(pdev);
310 if (err < 0)
311 return err;
312 }
313
314 ohci_resume(hcd, false);
315 return 0;
316}
317
318#else /* !CONFIG_PM */
319#define ohci_platform_suspend NULL
320#define ohci_platform_resume NULL
321#endif /* CONFIG_PM */
322
323static const struct of_device_id ohci_platform_ids[] = {
324 { .compatible = "generic-ohci", },
325 { }
326};
327MODULE_DEVICE_TABLE(of, ohci_platform_ids);
328
329static const struct platform_device_id ohci_platform_table[] = {
330 { "ohci-platform", 0 },
331 { }
332};
333MODULE_DEVICE_TABLE(platform, ohci_platform_table);
334
335static const struct dev_pm_ops ohci_platform_pm_ops = {
336 .suspend = ohci_platform_suspend,
337 .resume = ohci_platform_resume,
338};
339
340static struct platform_driver ohci_platform_driver = {
341 .id_table = ohci_platform_table,
342 .probe = ohci_platform_probe,
343 .remove = ohci_platform_remove,
344 .shutdown = usb_hcd_platform_shutdown,
345 .driver = {
346 .owner = THIS_MODULE,
347 .name = "ohci-platform",
348 .pm = &ohci_platform_pm_ops,
349 .of_match_table = ohci_platform_ids,
350 }
351};
352
353static int __init ohci_platform_init(void)
354{
355 if (usb_disabled())
356 return -ENODEV;
357
358 pr_info("%s: " DRIVER_DESC "\n", hcd_name);
359
360 ohci_init_driver(&ohci_platform_hc_driver, &platform_overrides);
361 return platform_driver_register(&ohci_platform_driver);
362}
363module_init(ohci_platform_init);
364
365static void __exit ohci_platform_cleanup(void)
366{
367 platform_driver_unregister(&ohci_platform_driver);
368}
369module_exit(ohci_platform_cleanup);
370
371MODULE_DESCRIPTION(DRIVER_DESC);
372MODULE_AUTHOR("Hauke Mehrtens");
373MODULE_AUTHOR("Alan Stern");
374MODULE_LICENSE("GPL");
1// SPDX-License-Identifier: GPL-2.0
2/*
3 * Generic platform ohci driver
4 *
5 * Copyright 2007 Michael Buesch <m@bues.ch>
6 * Copyright 2011-2012 Hauke Mehrtens <hauke@hauke-m.de>
7 * Copyright 2014 Hans de Goede <hdegoede@redhat.com>
8 *
9 * Derived from the OCHI-SSB driver
10 * Derived from the OHCI-PCI driver
11 * Copyright 1999 Roman Weissgaerber
12 * Copyright 2000-2002 David Brownell
13 * Copyright 1999 Linus Torvalds
14 * Copyright 1999 Gregory P. Smith
15 */
16
17#include <linux/clk.h>
18#include <linux/dma-mapping.h>
19#include <linux/hrtimer.h>
20#include <linux/io.h>
21#include <linux/kernel.h>
22#include <linux/module.h>
23#include <linux/err.h>
24#include <linux/of.h>
25#include <linux/platform_device.h>
26#include <linux/pm_runtime.h>
27#include <linux/reset.h>
28#include <linux/usb/ohci_pdriver.h>
29#include <linux/usb.h>
30#include <linux/usb/hcd.h>
31
32#include "ohci.h"
33
34#define DRIVER_DESC "OHCI generic platform driver"
35#define OHCI_MAX_CLKS 3
36#define hcd_to_ohci_priv(h) ((struct ohci_platform_priv *)hcd_to_ohci(h)->priv)
37
38struct ohci_platform_priv {
39 struct clk *clks[OHCI_MAX_CLKS];
40 struct reset_control *resets;
41};
42
43static const char hcd_name[] = "ohci-platform";
44
45static int ohci_platform_power_on(struct platform_device *dev)
46{
47 struct usb_hcd *hcd = platform_get_drvdata(dev);
48 struct ohci_platform_priv *priv = hcd_to_ohci_priv(hcd);
49 int clk, ret;
50
51 for (clk = 0; clk < OHCI_MAX_CLKS && priv->clks[clk]; clk++) {
52 ret = clk_prepare_enable(priv->clks[clk]);
53 if (ret)
54 goto err_disable_clks;
55 }
56
57 return 0;
58
59err_disable_clks:
60 while (--clk >= 0)
61 clk_disable_unprepare(priv->clks[clk]);
62
63 return ret;
64}
65
66static void ohci_platform_power_off(struct platform_device *dev)
67{
68 struct usb_hcd *hcd = platform_get_drvdata(dev);
69 struct ohci_platform_priv *priv = hcd_to_ohci_priv(hcd);
70 int clk;
71
72 for (clk = OHCI_MAX_CLKS - 1; clk >= 0; clk--)
73 if (priv->clks[clk])
74 clk_disable_unprepare(priv->clks[clk]);
75}
76
77static struct hc_driver __read_mostly ohci_platform_hc_driver;
78
79static const struct ohci_driver_overrides platform_overrides __initconst = {
80 .product_desc = "Generic Platform OHCI controller",
81 .extra_priv_size = sizeof(struct ohci_platform_priv),
82};
83
84static struct usb_ohci_pdata ohci_platform_defaults = {
85 .power_on = ohci_platform_power_on,
86 .power_suspend = ohci_platform_power_off,
87 .power_off = ohci_platform_power_off,
88};
89
90static int ohci_platform_probe(struct platform_device *dev)
91{
92 struct usb_hcd *hcd;
93 struct resource *res_mem;
94 struct usb_ohci_pdata *pdata = dev_get_platdata(&dev->dev);
95 struct ohci_platform_priv *priv;
96 struct ohci_hcd *ohci;
97 int err, irq, clk = 0;
98
99 if (usb_disabled())
100 return -ENODEV;
101
102 /*
103 * Use reasonable defaults so platforms don't have to provide these
104 * with DT probing on ARM.
105 */
106 if (!pdata)
107 pdata = &ohci_platform_defaults;
108
109 err = dma_coerce_mask_and_coherent(&dev->dev, DMA_BIT_MASK(32));
110 if (err)
111 return err;
112
113 irq = platform_get_irq(dev, 0);
114 if (irq < 0)
115 return irq;
116
117 hcd = usb_create_hcd(&ohci_platform_hc_driver, &dev->dev,
118 dev_name(&dev->dev));
119 if (!hcd)
120 return -ENOMEM;
121
122 platform_set_drvdata(dev, hcd);
123 dev->dev.platform_data = pdata;
124 priv = hcd_to_ohci_priv(hcd);
125 ohci = hcd_to_ohci(hcd);
126
127 if (pdata == &ohci_platform_defaults && dev->dev.of_node) {
128 if (of_property_read_bool(dev->dev.of_node, "big-endian-regs"))
129 ohci->flags |= OHCI_QUIRK_BE_MMIO;
130
131 if (of_property_read_bool(dev->dev.of_node, "big-endian-desc"))
132 ohci->flags |= OHCI_QUIRK_BE_DESC;
133
134 if (of_property_read_bool(dev->dev.of_node, "big-endian"))
135 ohci->flags |= OHCI_QUIRK_BE_MMIO | OHCI_QUIRK_BE_DESC;
136
137 if (of_property_read_bool(dev->dev.of_node, "no-big-frame-no"))
138 ohci->flags |= OHCI_QUIRK_FRAME_NO;
139
140 if (of_property_read_bool(dev->dev.of_node,
141 "remote-wakeup-connected"))
142 ohci->hc_control = OHCI_CTRL_RWC;
143
144 of_property_read_u32(dev->dev.of_node, "num-ports",
145 &ohci->num_ports);
146
147 for (clk = 0; clk < OHCI_MAX_CLKS; clk++) {
148 priv->clks[clk] = of_clk_get(dev->dev.of_node, clk);
149 if (IS_ERR(priv->clks[clk])) {
150 err = PTR_ERR(priv->clks[clk]);
151 if (err == -EPROBE_DEFER)
152 goto err_put_clks;
153 priv->clks[clk] = NULL;
154 break;
155 }
156 }
157
158 priv->resets = devm_reset_control_array_get_optional_shared(
159 &dev->dev);
160 if (IS_ERR(priv->resets)) {
161 err = PTR_ERR(priv->resets);
162 goto err_put_clks;
163 }
164
165 err = reset_control_deassert(priv->resets);
166 if (err)
167 goto err_put_clks;
168 }
169
170 if (pdata->big_endian_desc)
171 ohci->flags |= OHCI_QUIRK_BE_DESC;
172 if (pdata->big_endian_mmio)
173 ohci->flags |= OHCI_QUIRK_BE_MMIO;
174 if (pdata->no_big_frame_no)
175 ohci->flags |= OHCI_QUIRK_FRAME_NO;
176 if (pdata->num_ports)
177 ohci->num_ports = pdata->num_ports;
178
179#ifndef CONFIG_USB_OHCI_BIG_ENDIAN_MMIO
180 if (ohci->flags & OHCI_QUIRK_BE_MMIO) {
181 dev_err(&dev->dev,
182 "Error: CONFIG_USB_OHCI_BIG_ENDIAN_MMIO not set\n");
183 err = -EINVAL;
184 goto err_reset;
185 }
186#endif
187#ifndef CONFIG_USB_OHCI_BIG_ENDIAN_DESC
188 if (ohci->flags & OHCI_QUIRK_BE_DESC) {
189 dev_err(&dev->dev,
190 "Error: CONFIG_USB_OHCI_BIG_ENDIAN_DESC not set\n");
191 err = -EINVAL;
192 goto err_reset;
193 }
194#endif
195
196 pm_runtime_set_active(&dev->dev);
197 pm_runtime_enable(&dev->dev);
198 if (pdata->power_on) {
199 err = pdata->power_on(dev);
200 if (err < 0)
201 goto err_reset;
202 }
203
204 res_mem = platform_get_resource(dev, IORESOURCE_MEM, 0);
205 hcd->regs = devm_ioremap_resource(&dev->dev, res_mem);
206 if (IS_ERR(hcd->regs)) {
207 err = PTR_ERR(hcd->regs);
208 goto err_power;
209 }
210 hcd->rsrc_start = res_mem->start;
211 hcd->rsrc_len = resource_size(res_mem);
212
213 err = usb_add_hcd(hcd, irq, IRQF_SHARED);
214 if (err)
215 goto err_power;
216
217 device_wakeup_enable(hcd->self.controller);
218
219 platform_set_drvdata(dev, hcd);
220
221 return err;
222
223err_power:
224 if (pdata->power_off)
225 pdata->power_off(dev);
226err_reset:
227 pm_runtime_disable(&dev->dev);
228 reset_control_assert(priv->resets);
229err_put_clks:
230 while (--clk >= 0)
231 clk_put(priv->clks[clk]);
232
233 if (pdata == &ohci_platform_defaults)
234 dev->dev.platform_data = NULL;
235
236 usb_put_hcd(hcd);
237
238 return err;
239}
240
241static int ohci_platform_remove(struct platform_device *dev)
242{
243 struct usb_hcd *hcd = platform_get_drvdata(dev);
244 struct usb_ohci_pdata *pdata = dev_get_platdata(&dev->dev);
245 struct ohci_platform_priv *priv = hcd_to_ohci_priv(hcd);
246 int clk;
247
248 pm_runtime_get_sync(&dev->dev);
249 usb_remove_hcd(hcd);
250
251 if (pdata->power_off)
252 pdata->power_off(dev);
253
254 reset_control_assert(priv->resets);
255
256 for (clk = 0; clk < OHCI_MAX_CLKS && priv->clks[clk]; clk++)
257 clk_put(priv->clks[clk]);
258
259 usb_put_hcd(hcd);
260
261 pm_runtime_put_sync(&dev->dev);
262 pm_runtime_disable(&dev->dev);
263
264 if (pdata == &ohci_platform_defaults)
265 dev->dev.platform_data = NULL;
266
267 return 0;
268}
269
270#ifdef CONFIG_PM_SLEEP
271static int ohci_platform_suspend(struct device *dev)
272{
273 struct usb_hcd *hcd = dev_get_drvdata(dev);
274 struct usb_ohci_pdata *pdata = dev->platform_data;
275 struct platform_device *pdev = to_platform_device(dev);
276 bool do_wakeup = device_may_wakeup(dev);
277 int ret;
278
279 ret = ohci_suspend(hcd, do_wakeup);
280 if (ret)
281 return ret;
282
283 if (pdata->power_suspend)
284 pdata->power_suspend(pdev);
285
286 return ret;
287}
288
289static int ohci_platform_resume(struct device *dev)
290{
291 struct usb_hcd *hcd = dev_get_drvdata(dev);
292 struct usb_ohci_pdata *pdata = dev_get_platdata(dev);
293 struct platform_device *pdev = to_platform_device(dev);
294
295 if (pdata->power_on) {
296 int err = pdata->power_on(pdev);
297 if (err < 0)
298 return err;
299 }
300
301 ohci_resume(hcd, false);
302 return 0;
303}
304#endif /* CONFIG_PM_SLEEP */
305
306static const struct of_device_id ohci_platform_ids[] = {
307 { .compatible = "generic-ohci", },
308 { .compatible = "cavium,octeon-6335-ohci", },
309 { .compatible = "ti,ohci-omap3", },
310 { }
311};
312MODULE_DEVICE_TABLE(of, ohci_platform_ids);
313
314static const struct platform_device_id ohci_platform_table[] = {
315 { "ohci-platform", 0 },
316 { }
317};
318MODULE_DEVICE_TABLE(platform, ohci_platform_table);
319
320static SIMPLE_DEV_PM_OPS(ohci_platform_pm_ops, ohci_platform_suspend,
321 ohci_platform_resume);
322
323static struct platform_driver ohci_platform_driver = {
324 .id_table = ohci_platform_table,
325 .probe = ohci_platform_probe,
326 .remove = ohci_platform_remove,
327 .shutdown = usb_hcd_platform_shutdown,
328 .driver = {
329 .name = "ohci-platform",
330 .pm = &ohci_platform_pm_ops,
331 .of_match_table = ohci_platform_ids,
332 }
333};
334
335static int __init ohci_platform_init(void)
336{
337 if (usb_disabled())
338 return -ENODEV;
339
340 pr_info("%s: " DRIVER_DESC "\n", hcd_name);
341
342 ohci_init_driver(&ohci_platform_hc_driver, &platform_overrides);
343 return platform_driver_register(&ohci_platform_driver);
344}
345module_init(ohci_platform_init);
346
347static void __exit ohci_platform_cleanup(void)
348{
349 platform_driver_unregister(&ohci_platform_driver);
350}
351module_exit(ohci_platform_cleanup);
352
353MODULE_DESCRIPTION(DRIVER_DESC);
354MODULE_AUTHOR("Hauke Mehrtens");
355MODULE_AUTHOR("Alan Stern");
356MODULE_LICENSE("GPL");