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