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PM / sleep: Asynchronous threads for suspend_noirq
[linux/fpc-iii.git] / drivers / usb / musb / omap2430.c
blob2a408cdaf7b2c7102098faac6d29727505f41c91
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-omap.h>
40 #include <linux/usb/omap_control_usb.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 omap_musb_vbus_id_status status;
50 struct work_struct omap_musb_mailbox_work;
51 struct device *control_otghs;
52 };
53 #define glue_to_musb(g) platform_get_drvdata(g->musb)
54
55 static struct omap2430_glue *_glue;
56
57 static struct timer_list musb_idle_timer;
58
59 static void musb_do_idle(unsigned long _musb)
60 {
61 struct musb *musb = (void *)_musb;
62 unsigned long flags;
63 u8 power;
64 u8 devctl;
65
66 spin_lock_irqsave(&musb->lock, flags);
67
68 switch (musb->xceiv->state) {
69 case OTG_STATE_A_WAIT_BCON:
70
71 devctl = musb_readb(musb->mregs, MUSB_DEVCTL);
72 if (devctl & MUSB_DEVCTL_BDEVICE) {
73 musb->xceiv->state = OTG_STATE_B_IDLE;
74 MUSB_DEV_MODE(musb);
75 } else {
76 musb->xceiv->state = OTG_STATE_A_IDLE;
77 MUSB_HST_MODE(musb);
78 }
79 break;
80 case OTG_STATE_A_SUSPEND:
81 /* finish RESUME signaling? */
82 if (musb->port1_status & MUSB_PORT_STAT_RESUME) {
83 power = musb_readb(musb->mregs, MUSB_POWER);
84 power &= ~MUSB_POWER_RESUME;
85 dev_dbg(musb->controller, "root port resume stopped, power %02x\n", power);
86 musb_writeb(musb->mregs, MUSB_POWER, power);
87 musb->is_active = 1;
88 musb->port1_status &= ~(USB_PORT_STAT_SUSPEND
89 | MUSB_PORT_STAT_RESUME);
90 musb->port1_status |= USB_PORT_STAT_C_SUSPEND << 16;
91 usb_hcd_poll_rh_status(musb->hcd);
92 /* NOTE: it might really be A_WAIT_BCON ... */
93 musb->xceiv->state = OTG_STATE_A_HOST;
94 }
95 break;
96 case OTG_STATE_A_HOST:
97 devctl = musb_readb(musb->mregs, MUSB_DEVCTL);
98 if (devctl & MUSB_DEVCTL_BDEVICE)
99 musb->xceiv->state = OTG_STATE_B_IDLE;
100 else
101 musb->xceiv->state = OTG_STATE_A_WAIT_BCON;
102 default:
103 break;
104 }
105 spin_unlock_irqrestore(&musb->lock, flags);
106 }
107
108
109 static void omap2430_musb_try_idle(struct musb *musb, unsigned long timeout)
110 {
111 unsigned long default_timeout = jiffies + msecs_to_jiffies(3);
112 static unsigned long last_timer;
113
114 if (timeout == 0)
115 timeout = default_timeout;
116
117 /* Never idle if active, or when VBUS timeout is not set as host */
118 if (musb->is_active || ((musb->a_wait_bcon == 0)
119 && (musb->xceiv->state == OTG_STATE_A_WAIT_BCON))) {
120 dev_dbg(musb->controller, "%s active, deleting timer\n",
121 usb_otg_state_string(musb->xceiv->state));
122 del_timer(&musb_idle_timer);
123 last_timer = jiffies;
124 return;
125 }
126
127 if (time_after(last_timer, timeout)) {
128 if (!timer_pending(&musb_idle_timer))
129 last_timer = timeout;
130 else {
131 dev_dbg(musb->controller, "Longer idle timer already pending, ignoring\n");
132 return;
133 }
134 }
135 last_timer = timeout;
136
137 dev_dbg(musb->controller, "%s inactive, for idle timer for %lu ms\n",
138 usb_otg_state_string(musb->xceiv->state),
139 (unsigned long)jiffies_to_msecs(timeout - jiffies));
140 mod_timer(&musb_idle_timer, timeout);
141 }
142
143 static void omap2430_musb_set_vbus(struct musb *musb, int is_on)
144 {
145 struct usb_otg *otg = musb->xceiv->otg;
146 u8 devctl;
147 unsigned long timeout = jiffies + msecs_to_jiffies(1000);
148 /* HDRC controls CPEN, but beware current surges during device
149 * connect. They can trigger transient overcurrent conditions
150 * that must be ignored.
151 */
152
153 devctl = musb_readb(musb->mregs, MUSB_DEVCTL);
154
155 if (is_on) {
156 if (musb->xceiv->state == OTG_STATE_A_IDLE) {
157 int loops = 100;
158 /* start the session */
159 devctl |= MUSB_DEVCTL_SESSION;
160 musb_writeb(musb->mregs, MUSB_DEVCTL, devctl);
161 /*
162 * Wait for the musb to set as A device to enable the
163 * VBUS
164 */
165 while (musb_readb(musb->mregs, MUSB_DEVCTL) & 0x80) {
166
167 mdelay(5);
168 cpu_relax();
169
170 if (time_after(jiffies, timeout)
171 || loops-- <= 0) {
172 dev_err(musb->controller,
173 "configured as A device timeout");
174 break;
175 }
176 }
177
178 otg_set_vbus(otg, 1);
179 } else {
180 musb->is_active = 1;
181 otg->default_a = 1;
182 musb->xceiv->state = OTG_STATE_A_WAIT_VRISE;
183 devctl |= MUSB_DEVCTL_SESSION;
184 MUSB_HST_MODE(musb);
185 }
186 } else {
187 musb->is_active = 0;
188
189 /* NOTE: we're skipping A_WAIT_VFALL -> A_IDLE and
190 * jumping right to B_IDLE...
191 */
192
193 otg->default_a = 0;
194 musb->xceiv->state = OTG_STATE_B_IDLE;
195 devctl &= ~MUSB_DEVCTL_SESSION;
196
197 MUSB_DEV_MODE(musb);
198 }
199 musb_writeb(musb->mregs, MUSB_DEVCTL, devctl);
200
201 dev_dbg(musb->controller, "VBUS %s, devctl %02x "
202 /* otg %3x conf %08x prcm %08x */ "\n",
203 usb_otg_state_string(musb->xceiv->state),
204 musb_readb(musb->mregs, MUSB_DEVCTL));
205 }
206
207 static int omap2430_musb_set_mode(struct musb *musb, u8 musb_mode)
208 {
209 u8 devctl = musb_readb(musb->mregs, MUSB_DEVCTL);
210
211 devctl |= MUSB_DEVCTL_SESSION;
212 musb_writeb(musb->mregs, MUSB_DEVCTL, devctl);
213
214 return 0;
215 }
216
217 static inline void omap2430_low_level_exit(struct musb *musb)
218 {
219 u32 l;
220
221 /* in any role */
222 l = musb_readl(musb->mregs, OTG_FORCESTDBY);
223 l |= ENABLEFORCE; /* enable MSTANDBY */
224 musb_writel(musb->mregs, OTG_FORCESTDBY, l);
225 }
226
227 static inline void omap2430_low_level_init(struct musb *musb)
228 {
229 u32 l;
230
231 l = musb_readl(musb->mregs, OTG_FORCESTDBY);
232 l &= ~ENABLEFORCE; /* disable MSTANDBY */
233 musb_writel(musb->mregs, OTG_FORCESTDBY, l);
234 }
235
236 void omap_musb_mailbox(enum omap_musb_vbus_id_status status)
237 {
238 struct omap2430_glue *glue = _glue;
239
240 if (!glue) {
241 pr_err("%s: musb core is not yet initialized\n", __func__);
242 return;
243 }
244 glue->status = status;
245
246 if (!glue_to_musb(glue)) {
247 pr_err("%s: musb core is not yet ready\n", __func__);
248 return;
249 }
250
251 schedule_work(&glue->omap_musb_mailbox_work);
252 }
253 EXPORT_SYMBOL_GPL(omap_musb_mailbox);
254
255 static void omap_musb_set_mailbox(struct omap2430_glue *glue)
256 {
257 struct musb *musb = glue_to_musb(glue);
258 struct device *dev = musb->controller;
259 struct musb_hdrc_platform_data *pdata = dev_get_platdata(dev);
260 struct omap_musb_board_data *data = pdata->board_data;
261 struct usb_otg *otg = musb->xceiv->otg;
262
263 switch (glue->status) {
264 case OMAP_MUSB_ID_GROUND:
265 dev_dbg(dev, "ID GND\n");
266
267 otg->default_a = true;
268 musb->xceiv->state = OTG_STATE_A_IDLE;
269 musb->xceiv->last_event = USB_EVENT_ID;
270 if (musb->gadget_driver) {
271 pm_runtime_get_sync(dev);
272 omap_control_usb_set_mode(glue->control_otghs,
273 USB_MODE_HOST);
274 omap2430_musb_set_vbus(musb, 1);
275 }
276 break;
277
278 case OMAP_MUSB_VBUS_VALID:
279 dev_dbg(dev, "VBUS Connect\n");
280
281 otg->default_a = false;
282 musb->xceiv->state = OTG_STATE_B_IDLE;
283 musb->xceiv->last_event = USB_EVENT_VBUS;
284 if (musb->gadget_driver)
285 pm_runtime_get_sync(dev);
286 omap_control_usb_set_mode(glue->control_otghs, USB_MODE_DEVICE);
287 break;
288
289 case OMAP_MUSB_ID_FLOAT:
290 case OMAP_MUSB_VBUS_OFF:
291 dev_dbg(dev, "VBUS Disconnect\n");
292
293 musb->xceiv->last_event = USB_EVENT_NONE;
294 if (musb->gadget_driver) {
295 omap2430_musb_set_vbus(musb, 0);
296 pm_runtime_mark_last_busy(dev);
297 pm_runtime_put_autosuspend(dev);
298 }
299
300 if (data->interface_type == MUSB_INTERFACE_UTMI)
301 otg_set_vbus(musb->xceiv->otg, 0);
302
303 omap_control_usb_set_mode(glue->control_otghs,
304 USB_MODE_DISCONNECT);
305 break;
306 default:
307 dev_dbg(dev, "ID float\n");
308 }
309
310 atomic_notifier_call_chain(&musb->xceiv->notifier,
311 musb->xceiv->last_event, NULL);
312 }
313
314
315 static void omap_musb_mailbox_work(struct work_struct *mailbox_work)
316 {
317 struct omap2430_glue *glue = container_of(mailbox_work,
318 struct omap2430_glue, omap_musb_mailbox_work);
319 omap_musb_set_mailbox(glue);
320 }
321
322 static irqreturn_t omap2430_musb_interrupt(int irq, void *__hci)
323 {
324 unsigned long flags;
325 irqreturn_t retval = IRQ_NONE;
326 struct musb *musb = __hci;
327
328 spin_lock_irqsave(&musb->lock, flags);
329
330 musb->int_usb = musb_readb(musb->mregs, MUSB_INTRUSB);
331 musb->int_tx = musb_readw(musb->mregs, MUSB_INTRTX);
332 musb->int_rx = musb_readw(musb->mregs, MUSB_INTRRX);
333
334 if (musb->int_usb || musb->int_tx || musb->int_rx)
335 retval = musb_interrupt(musb);
336
337 spin_unlock_irqrestore(&musb->lock, flags);
338
339 return retval;
340 }
341
342 static int omap2430_musb_init(struct musb *musb)
343 {
344 u32 l;
345 int status = 0;
346 struct device *dev = musb->controller;
347 struct omap2430_glue *glue = dev_get_drvdata(dev->parent);
348 struct musb_hdrc_platform_data *plat = dev_get_platdata(dev);
349 struct omap_musb_board_data *data = plat->board_data;
350
351 /* We require some kind of external transceiver, hooked
352 * up through ULPI. TWL4030-family PMICs include one,
353 * which needs a driver, drivers aren't always needed.
354 */
355 if (dev->parent->of_node) {
356 musb->phy = devm_phy_get(dev->parent, "usb2-phy");
357
358 /* We can't totally remove musb->xceiv as of now because
359 * musb core uses xceiv.state and xceiv.otg. Once we have
360 * a separate state machine to handle otg, these can be moved
361 * out of xceiv and then we can start using the generic PHY
362 * framework
363 */
364 musb->xceiv = devm_usb_get_phy_by_phandle(dev->parent,
365 "usb-phy", 0);
366 } else {
367 musb->xceiv = devm_usb_get_phy_dev(dev, 0);
368 musb->phy = devm_phy_get(dev, "usb");
369 }
370
371 if (IS_ERR(musb->xceiv)) {
372 status = PTR_ERR(musb->xceiv);
373
374 if (status == -ENXIO)
375 return status;
376
377 pr_err("HS USB OTG: no transceiver configured\n");
378 return -EPROBE_DEFER;
379 }
380
381 if (IS_ERR(musb->phy)) {
382 pr_err("HS USB OTG: no PHY configured\n");
383 return PTR_ERR(musb->phy);
384 }
385 musb->isr = omap2430_musb_interrupt;
386
387 status = pm_runtime_get_sync(dev);
388 if (status < 0) {
389 dev_err(dev, "pm_runtime_get_sync FAILED %d\n", status);
390 goto err1;
391 }
392
393 l = musb_readl(musb->mregs, OTG_INTERFSEL);
394
395 if (data->interface_type == MUSB_INTERFACE_UTMI) {
396 /* OMAP4 uses Internal PHY GS70 which uses UTMI interface */
397 l &= ~ULPI_12PIN; /* Disable ULPI */
398 l |= UTMI_8BIT; /* Enable UTMI */
399 } else {
400 l |= ULPI_12PIN;
401 }
402
403 musb_writel(musb->mregs, OTG_INTERFSEL, l);
404
405 pr_debug("HS USB OTG: revision 0x%x, sysconfig 0x%02x, "
406 "sysstatus 0x%x, intrfsel 0x%x, simenable 0x%x\n",
407 musb_readl(musb->mregs, OTG_REVISION),
408 musb_readl(musb->mregs, OTG_SYSCONFIG),
409 musb_readl(musb->mregs, OTG_SYSSTATUS),
410 musb_readl(musb->mregs, OTG_INTERFSEL),
411 musb_readl(musb->mregs, OTG_SIMENABLE));
412
413 setup_timer(&musb_idle_timer, musb_do_idle, (unsigned long) musb);
414
415 if (glue->status != OMAP_MUSB_UNKNOWN)
416 omap_musb_set_mailbox(glue);
417
418 phy_init(musb->phy);
419
420 pm_runtime_put_noidle(musb->controller);
421 return 0;
422
423 err1:
424 return status;
425 }
426
427 static void omap2430_musb_enable(struct musb *musb)
428 {
429 u8 devctl;
430 unsigned long timeout = jiffies + msecs_to_jiffies(1000);
431 struct device *dev = musb->controller;
432 struct omap2430_glue *glue = dev_get_drvdata(dev->parent);
433 struct musb_hdrc_platform_data *pdata = dev_get_platdata(dev);
434 struct omap_musb_board_data *data = pdata->board_data;
435
436 switch (glue->status) {
437
438 case OMAP_MUSB_ID_GROUND:
439 omap_control_usb_set_mode(glue->control_otghs, USB_MODE_HOST);
440 if (data->interface_type != MUSB_INTERFACE_UTMI)
441 break;
442 devctl = musb_readb(musb->mregs, MUSB_DEVCTL);
443 /* start the session */
444 devctl |= MUSB_DEVCTL_SESSION;
445 musb_writeb(musb->mregs, MUSB_DEVCTL, devctl);
446 while (musb_readb(musb->mregs, MUSB_DEVCTL) &
447 MUSB_DEVCTL_BDEVICE) {
448 cpu_relax();
449
450 if (time_after(jiffies, timeout)) {
451 dev_err(dev, "configured as A device timeout");
452 break;
453 }
454 }
455 break;
456
457 case OMAP_MUSB_VBUS_VALID:
458 omap_control_usb_set_mode(glue->control_otghs, USB_MODE_DEVICE);
459 break;
460
461 default:
462 break;
463 }
464 }
465
466 static void omap2430_musb_disable(struct musb *musb)
467 {
468 struct device *dev = musb->controller;
469 struct omap2430_glue *glue = dev_get_drvdata(dev->parent);
470
471 if (glue->status != OMAP_MUSB_UNKNOWN)
472 omap_control_usb_set_mode(glue->control_otghs,
473 USB_MODE_DISCONNECT);
474 }
475
476 static int omap2430_musb_exit(struct musb *musb)
477 {
478 del_timer_sync(&musb_idle_timer);
479
480 omap2430_low_level_exit(musb);
481 phy_exit(musb->phy);
482
483 return 0;
484 }
485
486 static const struct musb_platform_ops omap2430_ops = {
487 .init = omap2430_musb_init,
488 .exit = omap2430_musb_exit,
489
490 .set_mode = omap2430_musb_set_mode,
491 .try_idle = omap2430_musb_try_idle,
492
493 .set_vbus = omap2430_musb_set_vbus,
494
495 .enable = omap2430_musb_enable,
496 .disable = omap2430_musb_disable,
497 };
498
499 static u64 omap2430_dmamask = DMA_BIT_MASK(32);
500
501 static int omap2430_probe(struct platform_device *pdev)
502 {
503 struct resource musb_resources[3];
504 struct musb_hdrc_platform_data *pdata = dev_get_platdata(&pdev->dev);
505 struct omap_musb_board_data *data;
506 struct platform_device *musb;
507 struct omap2430_glue *glue;
508 struct device_node *np = pdev->dev.of_node;
509 struct musb_hdrc_config *config;
510 int ret = -ENOMEM;
511
512 glue = devm_kzalloc(&pdev->dev, sizeof(*glue), GFP_KERNEL);
513 if (!glue) {
514 dev_err(&pdev->dev, "failed to allocate glue context\n");
515 goto err0;
516 }
517
518 musb = platform_device_alloc("musb-hdrc", PLATFORM_DEVID_AUTO);
519 if (!musb) {
520 dev_err(&pdev->dev, "failed to allocate musb device\n");
521 goto err0;
522 }
523
524 musb->dev.parent = &pdev->dev;
525 musb->dev.dma_mask = &omap2430_dmamask;
526 musb->dev.coherent_dma_mask = omap2430_dmamask;
527
528 glue->dev = &pdev->dev;
529 glue->musb = musb;
530 glue->status = OMAP_MUSB_UNKNOWN;
531 glue->control_otghs = ERR_PTR(-ENODEV);
532
533 if (np) {
534 struct device_node *control_node;
535 struct platform_device *control_pdev;
536
537 pdata = devm_kzalloc(&pdev->dev, sizeof(*pdata), GFP_KERNEL);
538 if (!pdata) {
539 dev_err(&pdev->dev,
540 "failed to allocate musb platform data\n");
541 goto err2;
542 }
543
544 data = devm_kzalloc(&pdev->dev, sizeof(*data), GFP_KERNEL);
545 if (!data) {
546 dev_err(&pdev->dev,
547 "failed to allocate musb board data\n");
548 goto err2;
549 }
550
551 config = devm_kzalloc(&pdev->dev, sizeof(*config), GFP_KERNEL);
552 if (!config) {
553 dev_err(&pdev->dev,
554 "failed to allocate musb hdrc config\n");
555 goto err2;
556 }
557
558 of_property_read_u32(np, "mode", (u32 *)&pdata->mode);
559 of_property_read_u32(np, "interface-type",
560 (u32 *)&data->interface_type);
561 of_property_read_u32(np, "num-eps", (u32 *)&config->num_eps);
562 of_property_read_u32(np, "ram-bits", (u32 *)&config->ram_bits);
563 of_property_read_u32(np, "power", (u32 *)&pdata->power);
564 config->multipoint = of_property_read_bool(np, "multipoint");
565
566 pdata->board_data = data;
567 pdata->config = config;
568
569 control_node = of_parse_phandle(np, "ctrl-module", 0);
570 if (control_node) {
571 control_pdev = of_find_device_by_node(control_node);
572 if (!control_pdev) {
573 dev_err(&pdev->dev, "Failed to get control device\n");
574 ret = -EINVAL;
575 goto err2;
576 }
577 glue->control_otghs = &control_pdev->dev;
578 }
579 }
580 pdata->platform_ops = &omap2430_ops;
581
582 platform_set_drvdata(pdev, glue);
583
584 /*
585 * REVISIT if we ever have two instances of the wrapper, we will be
586 * in big trouble
587 */
588 _glue = glue;
589
590 INIT_WORK(&glue->omap_musb_mailbox_work, omap_musb_mailbox_work);
591
592 memset(musb_resources, 0x00, sizeof(*musb_resources) *
593 ARRAY_SIZE(musb_resources));
594
595 musb_resources[0].name = pdev->resource[0].name;
596 musb_resources[0].start = pdev->resource[0].start;
597 musb_resources[0].end = pdev->resource[0].end;
598 musb_resources[0].flags = pdev->resource[0].flags;
599
600 musb_resources[1].name = pdev->resource[1].name;
601 musb_resources[1].start = pdev->resource[1].start;
602 musb_resources[1].end = pdev->resource[1].end;
603 musb_resources[1].flags = pdev->resource[1].flags;
604
605 musb_resources[2].name = pdev->resource[2].name;
606 musb_resources[2].start = pdev->resource[2].start;
607 musb_resources[2].end = pdev->resource[2].end;
608 musb_resources[2].flags = pdev->resource[2].flags;
609
610 ret = platform_device_add_resources(musb, musb_resources,
611 ARRAY_SIZE(musb_resources));
612 if (ret) {
613 dev_err(&pdev->dev, "failed to add resources\n");
614 goto err2;
615 }
616
617 ret = platform_device_add_data(musb, pdata, sizeof(*pdata));
618 if (ret) {
619 dev_err(&pdev->dev, "failed to add platform_data\n");
620 goto err2;
621 }
622
623 pm_runtime_enable(&pdev->dev);
624
625 ret = platform_device_add(musb);
626 if (ret) {
627 dev_err(&pdev->dev, "failed to register musb device\n");
628 goto err2;
629 }
630
631 return 0;
632
633 err2:
634 platform_device_put(musb);
635
636 err0:
637 return ret;
638 }
639
640 static int omap2430_remove(struct platform_device *pdev)
641 {
642 struct omap2430_glue *glue = platform_get_drvdata(pdev);
643
644 cancel_work_sync(&glue->omap_musb_mailbox_work);
645 platform_device_unregister(glue->musb);
646
647 return 0;
648 }
649
650 #ifdef CONFIG_PM
651
652 static int omap2430_runtime_suspend(struct device *dev)
653 {
654 struct omap2430_glue *glue = dev_get_drvdata(dev);
655 struct musb *musb = glue_to_musb(glue);
656
657 if (musb) {
658 musb->context.otg_interfsel = musb_readl(musb->mregs,
659 OTG_INTERFSEL);
660
661 omap2430_low_level_exit(musb);
662 phy_power_off(musb->phy);
663 }
664
665 return 0;
666 }
667
668 static int omap2430_runtime_resume(struct device *dev)
669 {
670 struct omap2430_glue *glue = dev_get_drvdata(dev);
671 struct musb *musb = glue_to_musb(glue);
672
673 if (musb) {
674 omap2430_low_level_init(musb);
675 musb_writel(musb->mregs, OTG_INTERFSEL,
676 musb->context.otg_interfsel);
677 phy_power_on(musb->phy);
678 }
679
680 return 0;
681 }
682
683 static struct dev_pm_ops omap2430_pm_ops = {
684 .runtime_suspend = omap2430_runtime_suspend,
685 .runtime_resume = omap2430_runtime_resume,
686 };
687
688 #define DEV_PM_OPS (&omap2430_pm_ops)
689 #else
690 #define DEV_PM_OPS NULL
691 #endif
692
693 #ifdef CONFIG_OF
694 static const struct of_device_id omap2430_id_table[] = {
695 {
696 .compatible = "ti,omap4-musb"
697 },
698 {
699 .compatible = "ti,omap3-musb"
700 },
701 {},
702 };
703 MODULE_DEVICE_TABLE(of, omap2430_id_table);
704 #endif
705
706 static struct platform_driver omap2430_driver = {
707 .probe = omap2430_probe,
708 .remove = omap2430_remove,
709 .driver = {
710 .name = "musb-omap2430",
711 .pm = DEV_PM_OPS,
712 .of_match_table = of_match_ptr(omap2430_id_table),
713 },
714 };
715
716 MODULE_DESCRIPTION("OMAP2PLUS MUSB Glue Layer");
717 MODULE_AUTHOR("Felipe Balbi <balbi@ti.com>");
718 MODULE_LICENSE("GPL v2");
719
720 static int __init omap2430_init(void)
721 {
722 return platform_driver_register(&omap2430_driver);
723 }
724 subsys_initcall(omap2430_init);
725
726 static void __exit omap2430_exit(void)
727 {
728 platform_driver_unregister(&omap2430_driver);
729 }
730 module_exit(omap2430_exit);
Linux with added FPC-III support