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usb: musb: Don't set d+ high before enable for 2430 glue layer
[linux.git] / drivers / usb / musb / omap2430.c
1 /*
2  * Copyright (C) 2005-2007 by Texas Instruments
3  * Some code has been taken from tusb6010.c
4  * Copyrights for that are attributable to:
5  * Copyright (C) 2006 Nokia Corporation
6  * Tony Lindgren <tony@atomide.com>
7  *
8  * This file is part of the Inventra Controller Driver for Linux.
9  *
10  * The Inventra Controller Driver for Linux is free software; you
11  * can redistribute it and/or modify it under the terms of the GNU
12  * General Public License version 2 as published by the Free Software
13  * Foundation.
14  *
15  * The Inventra Controller Driver for Linux is distributed in
16  * the hope that it will be useful, but WITHOUT ANY WARRANTY;
17  * without even the implied warranty of MERCHANTABILITY or
18  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public
19  * License for more details.
20  *
21  * You should have received a copy of the GNU General Public License
22  * along with The Inventra Controller Driver for Linux ; if not,
23  * write to the Free Software Foundation, Inc., 59 Temple Place,
24  * Suite 330, Boston, MA  02111-1307  USA
25  *
26  */
27 #include <linux/module.h>
28 #include <linux/kernel.h>
29 #include <linux/sched.h>
30 #include <linux/init.h>
31 #include <linux/list.h>
32 #include <linux/io.h>
33 #include <linux/of.h>
34 #include <linux/platform_device.h>
35 #include <linux/dma-mapping.h>
36 #include <linux/pm_runtime.h>
37 #include <linux/err.h>
38 #include <linux/delay.h>
39 #include <linux/usb/musb.h>
40 #include <linux/phy/omap_control_phy.h>
41 #include <linux/of_platform.h>
42
43 #include "musb_core.h"
44 #include "omap2430.h"
45
46 struct omap2430_glue {
47         struct device           *dev;
48         struct platform_device  *musb;
49         enum musb_vbus_id_status status;
50         struct work_struct      omap_musb_mailbox_work;
51         struct device           *control_otghs;
52         bool                    cable_connected;
53         bool                    enabled;
54         bool                    powered;
55 };
56 #define glue_to_musb(g)         platform_get_drvdata(g->musb)
57
58 static struct omap2430_glue     *_glue;
59
60 static void omap2430_musb_set_vbus(struct musb *musb, int is_on)
61 {
62         struct usb_otg  *otg = musb->xceiv->otg;
63         u8              devctl;
64         unsigned long timeout = jiffies + msecs_to_jiffies(1000);
65         /* HDRC controls CPEN, but beware current surges during device
66          * connect.  They can trigger transient overcurrent conditions
67          * that must be ignored.
68          */
69
70         devctl = musb_readb(musb->mregs, MUSB_DEVCTL);
71
72         if (is_on) {
73                 if (musb->xceiv->otg->state == OTG_STATE_A_IDLE) {
74                         int loops = 100;
75                         /* start the session */
76                         devctl |= MUSB_DEVCTL_SESSION;
77                         musb_writeb(musb->mregs, MUSB_DEVCTL, devctl);
78                         /*
79                          * Wait for the musb to set as A device to enable the
80                          * VBUS
81                          */
82                         while (musb_readb(musb->mregs, MUSB_DEVCTL) &
83                                MUSB_DEVCTL_BDEVICE) {
84
85                                 mdelay(5);
86                                 cpu_relax();
87
88                                 if (time_after(jiffies, timeout)
89                                     || loops-- <= 0) {
90                                         dev_err(musb->controller,
91                                         "configured as A device timeout");
92                                         break;
93                                 }
94                         }
95
96                         otg_set_vbus(otg, 1);
97                 } else {
98                         musb->is_active = 1;
99                         otg->default_a = 1;
100                         musb->xceiv->otg->state = OTG_STATE_A_WAIT_VRISE;
101                         devctl |= MUSB_DEVCTL_SESSION;
102                         MUSB_HST_MODE(musb);
103                 }
104         } else {
105                 musb->is_active = 0;
106
107                 /* NOTE:  we're skipping A_WAIT_VFALL -> A_IDLE and
108                  * jumping right to B_IDLE...
109                  */
110
111                 otg->default_a = 0;
112                 musb->xceiv->otg->state = OTG_STATE_B_IDLE;
113                 devctl &= ~MUSB_DEVCTL_SESSION;
114
115                 MUSB_DEV_MODE(musb);
116         }
117         musb_writeb(musb->mregs, MUSB_DEVCTL, devctl);
118
119         dev_dbg(musb->controller, "VBUS %s, devctl %02x "
120                 /* otg %3x conf %08x prcm %08x */ "\n",
121                 usb_otg_state_string(musb->xceiv->otg->state),
122                 musb_readb(musb->mregs, MUSB_DEVCTL));
123 }
124
125 static inline void omap2430_low_level_exit(struct musb *musb)
126 {
127         u32 l;
128
129         /* in any role */
130         l = musb_readl(musb->mregs, OTG_FORCESTDBY);
131         l |= ENABLEFORCE;       /* enable MSTANDBY */
132         musb_writel(musb->mregs, OTG_FORCESTDBY, l);
133 }
134
135 static inline void omap2430_low_level_init(struct musb *musb)
136 {
137         u32 l;
138
139         l = musb_readl(musb->mregs, OTG_FORCESTDBY);
140         l &= ~ENABLEFORCE;      /* disable MSTANDBY */
141         musb_writel(musb->mregs, OTG_FORCESTDBY, l);
142 }
143
144 /*
145  * We can get multiple cable events so we need to keep track
146  * of the power state. Only keep power enabled if USB cable is
147  * connected and a gadget is started.
148  */
149 static void omap2430_set_power(struct musb *musb, bool enabled, bool cable)
150 {
151         struct device *dev = musb->controller;
152         struct omap2430_glue *glue = dev_get_drvdata(dev->parent);
153         bool power_up;
154         int res;
155
156         if (glue->enabled != enabled)
157                 glue->enabled = enabled;
158
159         if (glue->cable_connected != cable)
160                 glue->cable_connected = cable;
161
162         power_up = glue->enabled && glue->cable_connected;
163         if (power_up == glue->powered) {
164                 dev_warn(musb->controller, "power state already %i\n",
165                          power_up);
166                 return;
167         }
168
169         glue->powered = power_up;
170
171         if (power_up) {
172                 res = pm_runtime_get_sync(musb->controller);
173                 if (res < 0) {
174                         dev_err(musb->controller, "could not enable: %i", res);
175                         glue->powered = false;
176                 }
177         } else {
178                 pm_runtime_mark_last_busy(musb->controller);
179                 pm_runtime_put_autosuspend(musb->controller);
180         }
181 }
182
183 static void omap2430_musb_mailbox(enum musb_vbus_id_status status)
184 {
185         struct omap2430_glue    *glue = _glue;
186
187         if (!glue) {
188                 pr_err("%s: musb core is not yet initialized\n", __func__);
189                 return;
190         }
191         glue->status = status;
192
193         if (!glue_to_musb(glue)) {
194                 pr_err("%s: musb core is not yet ready\n", __func__);
195                 return;
196         }
197
198         schedule_work(&glue->omap_musb_mailbox_work);
199 }
200
201 static void omap_musb_set_mailbox(struct omap2430_glue *glue)
202 {
203         struct musb *musb = glue_to_musb(glue);
204         struct device *dev = musb->controller;
205         struct musb_hdrc_platform_data *pdata = dev_get_platdata(dev);
206         struct omap_musb_board_data *data = pdata->board_data;
207         struct usb_otg *otg = musb->xceiv->otg;
208         bool cable_connected;
209
210         cable_connected = ((glue->status == MUSB_ID_GROUND) ||
211                            (glue->status == MUSB_VBUS_VALID));
212
213         if (cable_connected)
214                 omap2430_set_power(musb, glue->enabled, cable_connected);
215
216         switch (glue->status) {
217         case MUSB_ID_GROUND:
218                 dev_dbg(dev, "ID GND\n");
219
220                 otg->default_a = true;
221                 musb->xceiv->otg->state = OTG_STATE_A_IDLE;
222                 musb->xceiv->last_event = USB_EVENT_ID;
223                 if (musb->gadget_driver) {
224                         omap_control_usb_set_mode(glue->control_otghs,
225                                 USB_MODE_HOST);
226                         omap2430_musb_set_vbus(musb, 1);
227                 }
228                 break;
229
230         case MUSB_VBUS_VALID:
231                 dev_dbg(dev, "VBUS Connect\n");
232
233                 otg->default_a = false;
234                 musb->xceiv->otg->state = OTG_STATE_B_IDLE;
235                 musb->xceiv->last_event = USB_EVENT_VBUS;
236                 omap_control_usb_set_mode(glue->control_otghs, USB_MODE_DEVICE);
237                 break;
238
239         case MUSB_ID_FLOAT:
240         case MUSB_VBUS_OFF:
241                 dev_dbg(dev, "VBUS Disconnect\n");
242
243                 musb->xceiv->last_event = USB_EVENT_NONE;
244                 if (musb->gadget_driver)
245                         omap2430_musb_set_vbus(musb, 0);
246
247                 if (data->interface_type == MUSB_INTERFACE_UTMI)
248                         otg_set_vbus(musb->xceiv->otg, 0);
249
250                 omap_control_usb_set_mode(glue->control_otghs,
251                         USB_MODE_DISCONNECT);
252                 break;
253         default:
254                 dev_dbg(dev, "ID float\n");
255         }
256
257         if (!cable_connected)
258                 omap2430_set_power(musb, glue->enabled, cable_connected);
259
260         atomic_notifier_call_chain(&musb->xceiv->notifier,
261                         musb->xceiv->last_event, NULL);
262 }
263
264
265 static void omap_musb_mailbox_work(struct work_struct *mailbox_work)
266 {
267         struct omap2430_glue *glue = container_of(mailbox_work,
268                                 struct omap2430_glue, omap_musb_mailbox_work);
269         struct musb *musb = glue_to_musb(glue);
270         struct device *dev = musb->controller;
271
272         pm_runtime_get_sync(dev);
273         omap_musb_set_mailbox(glue);
274         pm_runtime_mark_last_busy(dev);
275         pm_runtime_put_autosuspend(dev);
276 }
277
278 static irqreturn_t omap2430_musb_interrupt(int irq, void *__hci)
279 {
280         unsigned long   flags;
281         irqreturn_t     retval = IRQ_NONE;
282         struct musb     *musb = __hci;
283
284         spin_lock_irqsave(&musb->lock, flags);
285
286         musb->int_usb = musb_readb(musb->mregs, MUSB_INTRUSB);
287         musb->int_tx = musb_readw(musb->mregs, MUSB_INTRTX);
288         musb->int_rx = musb_readw(musb->mregs, MUSB_INTRRX);
289
290         if (musb->int_usb || musb->int_tx || musb->int_rx)
291                 retval = musb_interrupt(musb);
292
293         spin_unlock_irqrestore(&musb->lock, flags);
294
295         return retval;
296 }
297
298 static int omap2430_musb_init(struct musb *musb)
299 {
300         u32 l;
301         int status = 0;
302         struct device *dev = musb->controller;
303         struct omap2430_glue *glue = dev_get_drvdata(dev->parent);
304         struct musb_hdrc_platform_data *plat = dev_get_platdata(dev);
305         struct omap_musb_board_data *data = plat->board_data;
306
307         /* We require some kind of external transceiver, hooked
308          * up through ULPI.  TWL4030-family PMICs include one,
309          * which needs a driver, drivers aren't always needed.
310          */
311         if (dev->parent->of_node) {
312                 musb->phy = devm_phy_get(dev->parent, "usb2-phy");
313
314                 /* We can't totally remove musb->xceiv as of now because
315                  * musb core uses xceiv.state and xceiv.otg. Once we have
316                  * a separate state machine to handle otg, these can be moved
317                  * out of xceiv and then we can start using the generic PHY
318                  * framework
319                  */
320                 musb->xceiv = devm_usb_get_phy_by_phandle(dev->parent,
321                     "usb-phy", 0);
322         } else {
323                 musb->xceiv = devm_usb_get_phy_dev(dev, 0);
324                 musb->phy = devm_phy_get(dev, "usb");
325         }
326
327         if (IS_ERR(musb->xceiv)) {
328                 status = PTR_ERR(musb->xceiv);
329
330                 if (status == -ENXIO)
331                         return status;
332
333                 pr_err("HS USB OTG: no transceiver configured\n");
334                 return -EPROBE_DEFER;
335         }
336
337         if (IS_ERR(musb->phy)) {
338                 pr_err("HS USB OTG: no PHY configured\n");
339                 return PTR_ERR(musb->phy);
340         }
341         musb->isr = omap2430_musb_interrupt;
342         phy_init(musb->phy);
343
344         /*
345          * Enable runtime PM for musb parent (this driver). We can't
346          * do it earlier as struct musb is not yet allocated and we
347          * need to touch the musb registers for runtime PM.
348          */
349         pm_runtime_enable(glue->dev);
350         status = pm_runtime_get_sync(glue->dev);
351         if (status < 0)
352                 goto err1;
353
354         l = musb_readl(musb->mregs, OTG_INTERFSEL);
355
356         if (data->interface_type == MUSB_INTERFACE_UTMI) {
357                 /* OMAP4 uses Internal PHY GS70 which uses UTMI interface */
358                 l &= ~ULPI_12PIN;       /* Disable ULPI */
359                 l |= UTMI_8BIT;         /* Enable UTMI  */
360         } else {
361                 l |= ULPI_12PIN;
362         }
363
364         musb_writel(musb->mregs, OTG_INTERFSEL, l);
365
366         pr_debug("HS USB OTG: revision 0x%x, sysconfig 0x%02x, "
367                         "sysstatus 0x%x, intrfsel 0x%x, simenable  0x%x\n",
368                         musb_readl(musb->mregs, OTG_REVISION),
369                         musb_readl(musb->mregs, OTG_SYSCONFIG),
370                         musb_readl(musb->mregs, OTG_SYSSTATUS),
371                         musb_readl(musb->mregs, OTG_INTERFSEL),
372                         musb_readl(musb->mregs, OTG_SIMENABLE));
373
374         if (glue->status != MUSB_UNKNOWN)
375                 omap_musb_set_mailbox(glue);
376
377         pm_runtime_put(glue->dev);
378         return 0;
379
380 err1:
381         return status;
382 }
383
384 static void omap2430_musb_enable(struct musb *musb)
385 {
386         u8              devctl;
387         unsigned long timeout = jiffies + msecs_to_jiffies(1000);
388         struct device *dev = musb->controller;
389         struct omap2430_glue *glue = dev_get_drvdata(dev->parent);
390         struct musb_hdrc_platform_data *pdata = dev_get_platdata(dev);
391         struct omap_musb_board_data *data = pdata->board_data;
392
393         if (!WARN_ON(!musb->phy))
394                 phy_power_on(musb->phy);
395
396         omap2430_set_power(musb, true, glue->cable_connected);
397
398         switch (glue->status) {
399
400         case MUSB_ID_GROUND:
401                 omap_control_usb_set_mode(glue->control_otghs, USB_MODE_HOST);
402                 if (data->interface_type != MUSB_INTERFACE_UTMI)
403                         break;
404                 devctl = musb_readb(musb->mregs, MUSB_DEVCTL);
405                 /* start the session */
406                 devctl |= MUSB_DEVCTL_SESSION;
407                 musb_writeb(musb->mregs, MUSB_DEVCTL, devctl);
408                 while (musb_readb(musb->mregs, MUSB_DEVCTL) &
409                                 MUSB_DEVCTL_BDEVICE) {
410                         cpu_relax();
411
412                         if (time_after(jiffies, timeout)) {
413                                 dev_err(dev, "configured as A device timeout");
414                                 break;
415                         }
416                 }
417                 break;
418
419         case MUSB_VBUS_VALID:
420                 omap_control_usb_set_mode(glue->control_otghs, USB_MODE_DEVICE);
421                 break;
422
423         default:
424                 break;
425         }
426 }
427
428 static void omap2430_musb_disable(struct musb *musb)
429 {
430         struct device *dev = musb->controller;
431         struct omap2430_glue *glue = dev_get_drvdata(dev->parent);
432
433         if (!WARN_ON(!musb->phy))
434                 phy_power_off(musb->phy);
435
436         if (glue->status != MUSB_UNKNOWN)
437                 omap_control_usb_set_mode(glue->control_otghs,
438                         USB_MODE_DISCONNECT);
439
440         omap2430_set_power(musb, false, glue->cable_connected);
441 }
442
443 static int omap2430_musb_exit(struct musb *musb)
444 {
445         struct device *dev = musb->controller;
446         struct omap2430_glue *glue = dev_get_drvdata(dev->parent);
447
448         omap2430_low_level_exit(musb);
449         phy_exit(musb->phy);
450         musb->phy = NULL;
451         cancel_work_sync(&glue->omap_musb_mailbox_work);
452
453         return 0;
454 }
455
456 static const struct musb_platform_ops omap2430_ops = {
457         .quirks         = MUSB_DMA_INVENTRA,
458 #ifdef CONFIG_USB_INVENTRA_DMA
459         .dma_init       = musbhs_dma_controller_create,
460         .dma_exit       = musbhs_dma_controller_destroy,
461 #endif
462         .init           = omap2430_musb_init,
463         .exit           = omap2430_musb_exit,
464
465         .set_vbus       = omap2430_musb_set_vbus,
466
467         .enable         = omap2430_musb_enable,
468         .disable        = omap2430_musb_disable,
469
470         .phy_callback   = omap2430_musb_mailbox,
471 };
472
473 static u64 omap2430_dmamask = DMA_BIT_MASK(32);
474
475 static int omap2430_probe(struct platform_device *pdev)
476 {
477         struct resource                 musb_resources[3];
478         struct musb_hdrc_platform_data  *pdata = dev_get_platdata(&pdev->dev);
479         struct omap_musb_board_data     *data;
480         struct platform_device          *musb;
481         struct omap2430_glue            *glue;
482         struct device_node              *np = pdev->dev.of_node;
483         struct musb_hdrc_config         *config;
484         int                             ret = -ENOMEM, val;
485
486         glue = devm_kzalloc(&pdev->dev, sizeof(*glue), GFP_KERNEL);
487         if (!glue)
488                 goto err0;
489
490         musb = platform_device_alloc("musb-hdrc", PLATFORM_DEVID_AUTO);
491         if (!musb) {
492                 dev_err(&pdev->dev, "failed to allocate musb device\n");
493                 goto err0;
494         }
495
496         musb->dev.parent                = &pdev->dev;
497         musb->dev.dma_mask              = &omap2430_dmamask;
498         musb->dev.coherent_dma_mask     = omap2430_dmamask;
499
500         glue->dev                       = &pdev->dev;
501         glue->musb                      = musb;
502         glue->status                    = MUSB_UNKNOWN;
503         glue->control_otghs = ERR_PTR(-ENODEV);
504
505         if (np) {
506                 struct device_node *control_node;
507                 struct platform_device *control_pdev;
508
509                 pdata = devm_kzalloc(&pdev->dev, sizeof(*pdata), GFP_KERNEL);
510                 if (!pdata)
511                         goto err2;
512
513                 data = devm_kzalloc(&pdev->dev, sizeof(*data), GFP_KERNEL);
514                 if (!data)
515                         goto err2;
516
517                 config = devm_kzalloc(&pdev->dev, sizeof(*config), GFP_KERNEL);
518                 if (!config)
519                         goto err2;
520
521                 of_property_read_u32(np, "mode", (u32 *)&pdata->mode);
522                 of_property_read_u32(np, "interface-type",
523                                                 (u32 *)&data->interface_type);
524                 of_property_read_u32(np, "num-eps", (u32 *)&config->num_eps);
525                 of_property_read_u32(np, "ram-bits", (u32 *)&config->ram_bits);
526                 of_property_read_u32(np, "power", (u32 *)&pdata->power);
527
528                 ret = of_property_read_u32(np, "multipoint", &val);
529                 if (!ret && val)
530                         config->multipoint = true;
531
532                 pdata->board_data       = data;
533                 pdata->config           = config;
534
535                 control_node = of_parse_phandle(np, "ctrl-module", 0);
536                 if (control_node) {
537                         control_pdev = of_find_device_by_node(control_node);
538                         if (!control_pdev) {
539                                 dev_err(&pdev->dev, "Failed to get control device\n");
540                                 ret = -EINVAL;
541                                 goto err2;
542                         }
543                         glue->control_otghs = &control_pdev->dev;
544                 }
545         }
546         pdata->platform_ops             = &omap2430_ops;
547
548         platform_set_drvdata(pdev, glue);
549
550         /*
551          * REVISIT if we ever have two instances of the wrapper, we will be
552          * in big trouble
553          */
554         _glue   = glue;
555
556         INIT_WORK(&glue->omap_musb_mailbox_work, omap_musb_mailbox_work);
557
558         memset(musb_resources, 0x00, sizeof(*musb_resources) *
559                         ARRAY_SIZE(musb_resources));
560
561         musb_resources[0].name = pdev->resource[0].name;
562         musb_resources[0].start = pdev->resource[0].start;
563         musb_resources[0].end = pdev->resource[0].end;
564         musb_resources[0].flags = pdev->resource[0].flags;
565
566         musb_resources[1].name = pdev->resource[1].name;
567         musb_resources[1].start = pdev->resource[1].start;
568         musb_resources[1].end = pdev->resource[1].end;
569         musb_resources[1].flags = pdev->resource[1].flags;
570
571         musb_resources[2].name = pdev->resource[2].name;
572         musb_resources[2].start = pdev->resource[2].start;
573         musb_resources[2].end = pdev->resource[2].end;
574         musb_resources[2].flags = pdev->resource[2].flags;
575
576         ret = platform_device_add_resources(musb, musb_resources,
577                         ARRAY_SIZE(musb_resources));
578         if (ret) {
579                 dev_err(&pdev->dev, "failed to add resources\n");
580                 goto err2;
581         }
582
583         ret = platform_device_add_data(musb, pdata, sizeof(*pdata));
584         if (ret) {
585                 dev_err(&pdev->dev, "failed to add platform_data\n");
586                 goto err2;
587         }
588
589         /*
590          * Note that we cannot enable PM runtime yet for this
591          * driver as we need struct musb initialized first.
592          * See omap2430_musb_init above.
593          */
594
595         ret = platform_device_add(musb);
596         if (ret) {
597                 dev_err(&pdev->dev, "failed to register musb device\n");
598                 goto err2;
599         }
600
601         return 0;
602
603 err2:
604         platform_device_put(musb);
605
606 err0:
607         return ret;
608 }
609
610 static int omap2430_remove(struct platform_device *pdev)
611 {
612         struct omap2430_glue *glue = platform_get_drvdata(pdev);
613         struct musb *musb = glue_to_musb(glue);
614
615         pm_runtime_get_sync(glue->dev);
616         platform_device_unregister(glue->musb);
617         omap2430_set_power(musb, false, false);
618         pm_runtime_put_sync(glue->dev);
619         pm_runtime_disable(glue->dev);
620
621         return 0;
622 }
623
624 #ifdef CONFIG_PM
625
626 static int omap2430_runtime_suspend(struct device *dev)
627 {
628         struct omap2430_glue            *glue = dev_get_drvdata(dev);
629         struct musb                     *musb = glue_to_musb(glue);
630
631         if (!musb)
632                 return 0;
633
634         musb->context.otg_interfsel = musb_readl(musb->mregs,
635                                                  OTG_INTERFSEL);
636
637         omap2430_low_level_exit(musb);
638
639         return 0;
640 }
641
642 static int omap2430_runtime_resume(struct device *dev)
643 {
644         struct omap2430_glue            *glue = dev_get_drvdata(dev);
645         struct musb                     *musb = glue_to_musb(glue);
646
647         if (!musb)
648                 return 0;
649
650         omap2430_low_level_init(musb);
651         musb_writel(musb->mregs, OTG_INTERFSEL,
652                     musb->context.otg_interfsel);
653
654         return 0;
655 }
656
657 static struct dev_pm_ops omap2430_pm_ops = {
658         .runtime_suspend = omap2430_runtime_suspend,
659         .runtime_resume = omap2430_runtime_resume,
660 };
661
662 #define DEV_PM_OPS      (&omap2430_pm_ops)
663 #else
664 #define DEV_PM_OPS      NULL
665 #endif
666
667 #ifdef CONFIG_OF
668 static const struct of_device_id omap2430_id_table[] = {
669         {
670                 .compatible = "ti,omap4-musb"
671         },
672         {
673                 .compatible = "ti,omap3-musb"
674         },
675         {},
676 };
677 MODULE_DEVICE_TABLE(of, omap2430_id_table);
678 #endif
679
680 static struct platform_driver omap2430_driver = {
681         .probe          = omap2430_probe,
682         .remove         = omap2430_remove,
683         .driver         = {
684                 .name   = "musb-omap2430",
685                 .pm     = DEV_PM_OPS,
686                 .of_match_table = of_match_ptr(omap2430_id_table),
687         },
688 };
689
690 MODULE_DESCRIPTION("OMAP2PLUS MUSB Glue Layer");
691 MODULE_AUTHOR("Felipe Balbi <balbi@ti.com>");
692 MODULE_LICENSE("GPL v2");
693
694 static int __init omap2430_init(void)
695 {
696         return platform_driver_register(&omap2430_driver);
697 }
698 subsys_initcall(omap2430_init);
699
700 static void __exit omap2430_exit(void)
701 {
702         platform_driver_unregister(&omap2430_driver);
703 }
704 module_exit(omap2430_exit);