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arm: vf610: fix double iomux configuration for vf610twr board
[u-boot/qq2440-u-boot.git] / drivers / usb / musb-new / musb_dsps.c
blob9a03917e87d6ffb169cdb19715123c616ca24547
1 /*
2 * Texas Instruments DSPS platforms "glue layer"
3 *
4 * Copyright (C) 2012, by Texas Instruments
5 *
6 * Based on the am35x "glue layer" code.
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 * musb_dsps.c will be a common file for all the TI DSPS platforms
27 * such as dm64x, dm36x, dm35x, da8x, am35x and ti81x.
28 * For now only ti81x is using this and in future davinci.c, am35x.c
29 * da8xx.c would be merged to this file after testing.
30 */
31
32 #define __UBOOT__
33 #ifndef __UBOOT__
34 #include <linux/init.h>
35 #include <linux/io.h>
36 #include <linux/err.h>
37 #include <linux/platform_device.h>
38 #include <linux/dma-mapping.h>
39 #include <linux/pm_runtime.h>
40 #include <linux/module.h>
41
42 #include <linux/of.h>
43 #include <linux/of_device.h>
44 #include <linux/of_address.h>
45
46 #include <plat/usb.h>
47 #else
48 #include <common.h>
49 #include <asm/omap_musb.h>
50 #include "linux-compat.h"
51 #endif
52
53 #include "musb_core.h"
54
55 /**
56 * avoid using musb_readx()/musb_writex() as glue layer should not be
57 * dependent on musb core layer symbols.
58 */
59 static inline u8 dsps_readb(const void __iomem *addr, unsigned offset)
60 { return __raw_readb(addr + offset); }
61
62 static inline u32 dsps_readl(const void __iomem *addr, unsigned offset)
63 { return __raw_readl(addr + offset); }
64
65 static inline void dsps_writeb(void __iomem *addr, unsigned offset, u8 data)
66 { __raw_writeb(data, addr + offset); }
67
68 static inline void dsps_writel(void __iomem *addr, unsigned offset, u32 data)
69 { __raw_writel(data, addr + offset); }
70
71 /**
72 * DSPS musb wrapper register offset.
73 * FIXME: This should be expanded to have all the wrapper registers from TI DSPS
74 * musb ips.
75 */
76 struct dsps_musb_wrapper {
77 u16 revision;
78 u16 control;
79 u16 status;
80 u16 eoi;
81 u16 epintr_set;
82 u16 epintr_clear;
83 u16 epintr_status;
84 u16 coreintr_set;
85 u16 coreintr_clear;
86 u16 coreintr_status;
87 u16 phy_utmi;
88 u16 mode;
89
90 /* bit positions for control */
91 unsigned reset:5;
92
93 /* bit positions for interrupt */
94 unsigned usb_shift:5;
95 u32 usb_mask;
96 u32 usb_bitmap;
97 unsigned drvvbus:5;
98
99 unsigned txep_shift:5;
100 u32 txep_mask;
101 u32 txep_bitmap;
102
103 unsigned rxep_shift:5;
104 u32 rxep_mask;
105 u32 rxep_bitmap;
106
107 /* bit positions for phy_utmi */
108 unsigned otg_disable:5;
109
110 /* bit positions for mode */
111 unsigned iddig:5;
112 /* miscellaneous stuff */
113 u32 musb_core_offset;
114 u8 poll_seconds;
115 };
116
117 static const struct dsps_musb_wrapper ti81xx_driver_data __devinitconst = {
118 .revision = 0x00,
119 .control = 0x14,
120 .status = 0x18,
121 .eoi = 0x24,
122 .epintr_set = 0x38,
123 .epintr_clear = 0x40,
124 .epintr_status = 0x30,
125 .coreintr_set = 0x3c,
126 .coreintr_clear = 0x44,
127 .coreintr_status = 0x34,
128 .phy_utmi = 0xe0,
129 .mode = 0xe8,
130 .reset = 0,
131 .otg_disable = 21,
132 .iddig = 8,
133 .usb_shift = 0,
134 .usb_mask = 0x1ff,
135 .usb_bitmap = (0x1ff << 0),
136 .drvvbus = 8,
137 .txep_shift = 0,
138 .txep_mask = 0xffff,
139 .txep_bitmap = (0xffff << 0),
140 .rxep_shift = 16,
141 .rxep_mask = 0xfffe,
142 .rxep_bitmap = (0xfffe << 16),
143 .musb_core_offset = 0x400,
144 .poll_seconds = 2,
145 };
146
147 /**
148 * DSPS glue structure.
149 */
150 struct dsps_glue {
151 struct device *dev;
152 struct platform_device *musb; /* child musb pdev */
153 const struct dsps_musb_wrapper *wrp; /* wrapper register offsets */
154 struct timer_list timer; /* otg_workaround timer */
155 };
156
157 /**
158 * dsps_musb_enable - enable interrupts
159 */
160 static void dsps_musb_enable(struct musb *musb)
161 {
162 #ifndef __UBOOT__
163 struct device *dev = musb->controller;
164 struct platform_device *pdev = to_platform_device(dev->parent);
165 struct dsps_glue *glue = platform_get_drvdata(pdev);
166 const struct dsps_musb_wrapper *wrp = glue->wrp;
167 #else
168 const struct dsps_musb_wrapper *wrp = &ti81xx_driver_data;
169 #endif
170 void __iomem *reg_base = musb->ctrl_base;
171 u32 epmask, coremask;
172
173 /* Workaround: setup IRQs through both register sets. */
174 epmask = ((musb->epmask & wrp->txep_mask) << wrp->txep_shift) |
175 ((musb->epmask & wrp->rxep_mask) << wrp->rxep_shift);
176 coremask = (wrp->usb_bitmap & ~MUSB_INTR_SOF);
177
178 dsps_writel(reg_base, wrp->epintr_set, epmask);
179 dsps_writel(reg_base, wrp->coreintr_set, coremask);
180 /* Force the DRVVBUS IRQ so we can start polling for ID change. */
181 #ifndef __UBOOT__
182 if (is_otg_enabled(musb))
183 dsps_writel(reg_base, wrp->coreintr_set,
184 (1 << wrp->drvvbus) << wrp->usb_shift);
185 #endif
186 }
187
188 /**
189 * dsps_musb_disable - disable HDRC and flush interrupts
190 */
191 static void dsps_musb_disable(struct musb *musb)
192 {
193 #ifndef __UBOOT__
194 struct device *dev = musb->controller;
195 struct platform_device *pdev = to_platform_device(dev->parent);
196 struct dsps_glue *glue = platform_get_drvdata(pdev);
197 const struct dsps_musb_wrapper *wrp = glue->wrp;
198 void __iomem *reg_base = musb->ctrl_base;
199
200 dsps_writel(reg_base, wrp->coreintr_clear, wrp->usb_bitmap);
201 dsps_writel(reg_base, wrp->epintr_clear,
202 wrp->txep_bitmap | wrp->rxep_bitmap);
203 dsps_writeb(musb->mregs, MUSB_DEVCTL, 0);
204 dsps_writel(reg_base, wrp->eoi, 0);
205 #endif
206 }
207
208 #ifndef __UBOOT__
209 static void otg_timer(unsigned long _musb)
210 {
211 struct musb *musb = (void *)_musb;
212 void __iomem *mregs = musb->mregs;
213 struct device *dev = musb->controller;
214 struct platform_device *pdev = to_platform_device(dev->parent);
215 struct dsps_glue *glue = platform_get_drvdata(pdev);
216 const struct dsps_musb_wrapper *wrp = glue->wrp;
217 u8 devctl;
218 unsigned long flags;
219
220 /*
221 * We poll because DSPS IP's won't expose several OTG-critical
222 * status change events (from the transceiver) otherwise.
223 */
224 devctl = dsps_readb(mregs, MUSB_DEVCTL);
225 dev_dbg(musb->controller, "Poll devctl %02x (%s)\n", devctl,
226 otg_state_string(musb->xceiv->state));
227
228 spin_lock_irqsave(&musb->lock, flags);
229 switch (musb->xceiv->state) {
230 case OTG_STATE_A_WAIT_BCON:
231 devctl &= ~MUSB_DEVCTL_SESSION;
232 dsps_writeb(musb->mregs, MUSB_DEVCTL, devctl);
233
234 devctl = dsps_readb(musb->mregs, MUSB_DEVCTL);
235 if (devctl & MUSB_DEVCTL_BDEVICE) {
236 musb->xceiv->state = OTG_STATE_B_IDLE;
237 MUSB_DEV_MODE(musb);
238 } else {
239 musb->xceiv->state = OTG_STATE_A_IDLE;
240 MUSB_HST_MODE(musb);
241 }
242 break;
243 case OTG_STATE_A_WAIT_VFALL:
244 musb->xceiv->state = OTG_STATE_A_WAIT_VRISE;
245 dsps_writel(musb->ctrl_base, wrp->coreintr_set,
246 MUSB_INTR_VBUSERROR << wrp->usb_shift);
247 break;
248 case OTG_STATE_B_IDLE:
249 if (!is_peripheral_enabled(musb))
250 break;
251
252 devctl = dsps_readb(mregs, MUSB_DEVCTL);
253 if (devctl & MUSB_DEVCTL_BDEVICE)
254 mod_timer(&glue->timer,
255 jiffies + wrp->poll_seconds * HZ);
256 else
257 musb->xceiv->state = OTG_STATE_A_IDLE;
258 break;
259 default:
260 break;
261 }
262 spin_unlock_irqrestore(&musb->lock, flags);
263 }
264
265 static void dsps_musb_try_idle(struct musb *musb, unsigned long timeout)
266 {
267 struct device *dev = musb->controller;
268 struct platform_device *pdev = to_platform_device(dev->parent);
269 struct dsps_glue *glue = platform_get_drvdata(pdev);
270 static unsigned long last_timer;
271
272 if (!is_otg_enabled(musb))
273 return;
274
275 if (timeout == 0)
276 timeout = jiffies + msecs_to_jiffies(3);
277
278 /* Never idle if active, or when VBUS timeout is not set as host */
279 if (musb->is_active || (musb->a_wait_bcon == 0 &&
280 musb->xceiv->state == OTG_STATE_A_WAIT_BCON)) {
281 dev_dbg(musb->controller, "%s active, deleting timer\n",
282 otg_state_string(musb->xceiv->state));
283 del_timer(&glue->timer);
284 last_timer = jiffies;
285 return;
286 }
287
288 if (time_after(last_timer, timeout) && timer_pending(&glue->timer)) {
289 dev_dbg(musb->controller,
290 "Longer idle timer already pending, ignoring...\n");
291 return;
292 }
293 last_timer = timeout;
294
295 dev_dbg(musb->controller, "%s inactive, starting idle timer for %u ms\n",
296 otg_state_string(musb->xceiv->state),
297 jiffies_to_msecs(timeout - jiffies));
298 mod_timer(&glue->timer, timeout);
299 }
300 #endif
301
302 static irqreturn_t dsps_interrupt(int irq, void *hci)
303 {
304 struct musb *musb = hci;
305 void __iomem *reg_base = musb->ctrl_base;
306 #ifndef __UBOOT__
307 struct device *dev = musb->controller;
308 struct platform_device *pdev = to_platform_device(dev->parent);
309 struct dsps_glue *glue = platform_get_drvdata(pdev);
310 const struct dsps_musb_wrapper *wrp = glue->wrp;
311 #else
312 const struct dsps_musb_wrapper *wrp = &ti81xx_driver_data;
313 #endif
314 unsigned long flags;
315 irqreturn_t ret = IRQ_NONE;
316 u32 epintr, usbintr;
317
318 spin_lock_irqsave(&musb->lock, flags);
319
320 /* Get endpoint interrupts */
321 epintr = dsps_readl(reg_base, wrp->epintr_status);
322 musb->int_rx = (epintr & wrp->rxep_bitmap) >> wrp->rxep_shift;
323 musb->int_tx = (epintr & wrp->txep_bitmap) >> wrp->txep_shift;
324
325 if (epintr)
326 dsps_writel(reg_base, wrp->epintr_status, epintr);
327
328 /* Get usb core interrupts */
329 usbintr = dsps_readl(reg_base, wrp->coreintr_status);
330 if (!usbintr && !epintr)
331 goto eoi;
332
333 musb->int_usb = (usbintr & wrp->usb_bitmap) >> wrp->usb_shift;
334 if (usbintr)
335 dsps_writel(reg_base, wrp->coreintr_status, usbintr);
336
337 dev_dbg(musb->controller, "usbintr (%x) epintr(%x)\n",
338 usbintr, epintr);
339 #ifndef __UBOOT__
340 /*
341 * DRVVBUS IRQs are the only proxy we have (a very poor one!) for
342 * DSPS IP's missing ID change IRQ. We need an ID change IRQ to
343 * switch appropriately between halves of the OTG state machine.
344 * Managing DEVCTL.SESSION per Mentor docs requires that we know its
345 * value but DEVCTL.BDEVICE is invalid without DEVCTL.SESSION set.
346 * Also, DRVVBUS pulses for SRP (but not at 5V) ...
347 */
348 if ((usbintr & MUSB_INTR_BABBLE) && is_host_enabled(musb))
349 pr_info("CAUTION: musb: Babble Interrupt Occured\n");
350
351 if (usbintr & ((1 << wrp->drvvbus) << wrp->usb_shift)) {
352 int drvvbus = dsps_readl(reg_base, wrp->status);
353 void __iomem *mregs = musb->mregs;
354 u8 devctl = dsps_readb(mregs, MUSB_DEVCTL);
355 int err;
356
357 err = is_host_enabled(musb) && (musb->int_usb &
358 MUSB_INTR_VBUSERROR);
359 if (err) {
360 /*
361 * The Mentor core doesn't debounce VBUS as needed
362 * to cope with device connect current spikes. This
363 * means it's not uncommon for bus-powered devices
364 * to get VBUS errors during enumeration.
365 *
366 * This is a workaround, but newer RTL from Mentor
367 * seems to allow a better one: "re"-starting sessions
368 * without waiting for VBUS to stop registering in
369 * devctl.
370 */
371 musb->int_usb &= ~MUSB_INTR_VBUSERROR;
372 musb->xceiv->state = OTG_STATE_A_WAIT_VFALL;
373 mod_timer(&glue->timer,
374 jiffies + wrp->poll_seconds * HZ);
375 WARNING("VBUS error workaround (delay coming)\n");
376 } else if (is_host_enabled(musb) && drvvbus) {
377 musb->is_active = 1;
378 MUSB_HST_MODE(musb);
379 musb->xceiv->otg->default_a = 1;
380 musb->xceiv->state = OTG_STATE_A_WAIT_VRISE;
381 del_timer(&glue->timer);
382 } else {
383 musb->is_active = 0;
384 MUSB_DEV_MODE(musb);
385 musb->xceiv->otg->default_a = 0;
386 musb->xceiv->state = OTG_STATE_B_IDLE;
387 }
388
389 /* NOTE: this must complete power-on within 100 ms. */
390 dev_dbg(musb->controller, "VBUS %s (%s)%s, devctl %02x\n",
391 drvvbus ? "on" : "off",
392 otg_state_string(musb->xceiv->state),
393 err ? " ERROR" : "",
394 devctl);
395 ret = IRQ_HANDLED;
396 }
397 #endif
398
399 if (musb->int_tx || musb->int_rx || musb->int_usb)
400 ret |= musb_interrupt(musb);
401
402 eoi:
403 /* EOI needs to be written for the IRQ to be re-asserted. */
404 if (ret == IRQ_HANDLED || epintr || usbintr)
405 dsps_writel(reg_base, wrp->eoi, 1);
406
407 #ifndef __UBOOT__
408 /* Poll for ID change */
409 if (is_otg_enabled(musb) && musb->xceiv->state == OTG_STATE_B_IDLE)
410 mod_timer(&glue->timer, jiffies + wrp->poll_seconds * HZ);
411 #endif
412
413 spin_unlock_irqrestore(&musb->lock, flags);
414
415 return ret;
416 }
417
418 static int dsps_musb_init(struct musb *musb)
419 {
420 #ifndef __UBOOT__
421 struct device *dev = musb->controller;
422 struct musb_hdrc_platform_data *plat = dev->platform_data;
423 struct platform_device *pdev = to_platform_device(dev->parent);
424 struct dsps_glue *glue = platform_get_drvdata(pdev);
425 const struct dsps_musb_wrapper *wrp = glue->wrp;
426 struct omap_musb_board_data *data = plat->board_data;
427 #else
428 struct omap_musb_board_data *data =
429 (struct omap_musb_board_data *)musb->controller;
430 const struct dsps_musb_wrapper *wrp = &ti81xx_driver_data;
431 #endif
432 void __iomem *reg_base = musb->ctrl_base;
433 u32 rev, val;
434 int status;
435
436 /* mentor core register starts at offset of 0x400 from musb base */
437 musb->mregs += wrp->musb_core_offset;
438
439 #ifndef __UBOOT__
440 /* NOP driver needs change if supporting dual instance */
441 usb_nop_xceiv_register();
442 musb->xceiv = usb_get_phy(USB_PHY_TYPE_USB2);
443 if (IS_ERR_OR_NULL(musb->xceiv))
444 return -ENODEV;
445 #endif
446
447 /* Returns zero if e.g. not clocked */
448 rev = dsps_readl(reg_base, wrp->revision);
449 if (!rev) {
450 status = -ENODEV;
451 goto err0;
452 }
453
454 #ifndef __UBOOT__
455 if (is_host_enabled(musb))
456 setup_timer(&glue->timer, otg_timer, (unsigned long) musb);
457 #endif
458
459 /* Reset the musb */
460 dsps_writel(reg_base, wrp->control, (1 << wrp->reset));
461
462 /* Start the on-chip PHY and its PLL. */
463 if (data->set_phy_power)
464 data->set_phy_power(1);
465
466 musb->isr = dsps_interrupt;
467
468 /* reset the otgdisable bit, needed for host mode to work */
469 val = dsps_readl(reg_base, wrp->phy_utmi);
470 val &= ~(1 << wrp->otg_disable);
471 dsps_writel(musb->ctrl_base, wrp->phy_utmi, val);
472
473 /* clear level interrupt */
474 dsps_writel(reg_base, wrp->eoi, 0);
475
476 return 0;
477 err0:
478 #ifndef __UBOOT__
479 usb_put_phy(musb->xceiv);
480 usb_nop_xceiv_unregister();
481 #endif
482 return status;
483 }
484
485 static int dsps_musb_exit(struct musb *musb)
486 {
487 #ifndef __UBOOT__
488 struct device *dev = musb->controller;
489 struct musb_hdrc_platform_data *plat = dev->platform_data;
490 struct omap_musb_board_data *data = plat->board_data;
491 struct platform_device *pdev = to_platform_device(dev->parent);
492 struct dsps_glue *glue = platform_get_drvdata(pdev);
493 #else
494 struct omap_musb_board_data *data =
495 (struct omap_musb_board_data *)musb->controller;
496 #endif
497
498 #ifndef __UBOOT__
499 if (is_host_enabled(musb))
500 del_timer_sync(&glue->timer);
501 #endif
502
503 /* Shutdown the on-chip PHY and its PLL. */
504 if (data->set_phy_power)
505 data->set_phy_power(0);
506
507 #ifndef __UBOOT__
508 /* NOP driver needs change if supporting dual instance */
509 usb_put_phy(musb->xceiv);
510 usb_nop_xceiv_unregister();
511 #endif
512
513 return 0;
514 }
515
516 #ifndef __UBOOT__
517 static struct musb_platform_ops dsps_ops = {
518 #else
519 struct musb_platform_ops musb_dsps_ops = {
520 #endif
521 .init = dsps_musb_init,
522 .exit = dsps_musb_exit,
523
524 .enable = dsps_musb_enable,
525 .disable = dsps_musb_disable,
526
527 #ifndef __UBOOT__
528 .try_idle = dsps_musb_try_idle,
529 #endif
530 };
531
532 #ifndef __UBOOT__
533 static u64 musb_dmamask = DMA_BIT_MASK(32);
534 #endif
535
536 #ifndef __UBOOT__
537 static int __devinit dsps_create_musb_pdev(struct dsps_glue *glue, u8 id)
538 {
539 struct device *dev = glue->dev;
540 struct platform_device *pdev = to_platform_device(dev);
541 struct musb_hdrc_platform_data *pdata = dev->platform_data;
542 struct platform_device *musb;
543 struct resource *res;
544 struct resource resources[2];
545 char res_name[10];
546 int ret;
547
548 /* get memory resource */
549 sprintf(res_name, "musb%d", id);
550 res = platform_get_resource_byname(pdev, IORESOURCE_MEM, res_name);
551 if (!res) {
552 dev_err(dev, "%s get mem resource failed\n", res_name);
553 ret = -ENODEV;
554 goto err0;
555 }
556 res->parent = NULL;
557 resources[0] = *res;
558
559 /* get irq resource */
560 sprintf(res_name, "musb%d-irq", id);
561 res = platform_get_resource_byname(pdev, IORESOURCE_IRQ, res_name);
562 if (!res) {
563 dev_err(dev, "%s get irq resource failed\n", res_name);
564 ret = -ENODEV;
565 goto err0;
566 }
567 res->parent = NULL;
568 resources[1] = *res;
569 resources[1].name = "mc";
570
571 /* allocate the child platform device */
572 musb = platform_device_alloc("musb-hdrc", -1);
573 if (!musb) {
574 dev_err(dev, "failed to allocate musb device\n");
575 ret = -ENOMEM;
576 goto err0;
577 }
578
579 musb->dev.parent = dev;
580 musb->dev.dma_mask = &musb_dmamask;
581 musb->dev.coherent_dma_mask = musb_dmamask;
582
583 glue->musb = musb;
584
585 pdata->platform_ops = &dsps_ops;
586
587 ret = platform_device_add_resources(musb, resources, 2);
588 if (ret) {
589 dev_err(dev, "failed to add resources\n");
590 goto err1;
591 }
592
593 ret = platform_device_add_data(musb, pdata, sizeof(*pdata));
594 if (ret) {
595 dev_err(dev, "failed to add platform_data\n");
596 goto err1;
597 }
598
599 ret = platform_device_add(musb);
600 if (ret) {
601 dev_err(dev, "failed to register musb device\n");
602 goto err1;
603 }
604
605 return 0;
606
607 err1:
608 platform_device_put(musb);
609 err0:
610 return ret;
611 }
612
613 static void __devexit dsps_delete_musb_pdev(struct dsps_glue *glue)
614 {
615 platform_device_del(glue->musb);
616 platform_device_put(glue->musb);
617 }
618
619 static int __devinit dsps_probe(struct platform_device *pdev)
620 {
621 const struct platform_device_id *id = platform_get_device_id(pdev);
622 const struct dsps_musb_wrapper *wrp =
623 (struct dsps_musb_wrapper *)id->driver_data;
624 struct dsps_glue *glue;
625 struct resource *iomem;
626 int ret;
627
628 /* allocate glue */
629 glue = kzalloc(sizeof(*glue), GFP_KERNEL);
630 if (!glue) {
631 dev_err(&pdev->dev, "unable to allocate glue memory\n");
632 ret = -ENOMEM;
633 goto err0;
634 }
635
636 /* get memory resource */
637 iomem = platform_get_resource(pdev, IORESOURCE_MEM, 0);
638 if (!iomem) {
639 dev_err(&pdev->dev, "failed to get usbss mem resourse\n");
640 ret = -ENODEV;
641 goto err1;
642 }
643
644 glue->dev = &pdev->dev;
645
646 glue->wrp = kmemdup(wrp, sizeof(*wrp), GFP_KERNEL);
647 if (!glue->wrp) {
648 dev_err(&pdev->dev, "failed to duplicate wrapper struct memory\n");
649 ret = -ENOMEM;
650 goto err1;
651 }
652 platform_set_drvdata(pdev, glue);
653
654 /* enable the usbss clocks */
655 pm_runtime_enable(&pdev->dev);
656
657 ret = pm_runtime_get_sync(&pdev->dev);
658 if (ret < 0) {
659 dev_err(&pdev->dev, "pm_runtime_get_sync FAILED");
660 goto err2;
661 }
662
663 /* create the child platform device for first instances of musb */
664 ret = dsps_create_musb_pdev(glue, 0);
665 if (ret != 0) {
666 dev_err(&pdev->dev, "failed to create child pdev\n");
667 goto err3;
668 }
669
670 return 0;
671
672 err3:
673 pm_runtime_put(&pdev->dev);
674 err2:
675 pm_runtime_disable(&pdev->dev);
676 kfree(glue->wrp);
677 err1:
678 kfree(glue);
679 err0:
680 return ret;
681 }
682 static int __devexit dsps_remove(struct platform_device *pdev)
683 {
684 struct dsps_glue *glue = platform_get_drvdata(pdev);
685
686 /* delete the child platform device */
687 dsps_delete_musb_pdev(glue);
688
689 /* disable usbss clocks */
690 pm_runtime_put(&pdev->dev);
691 pm_runtime_disable(&pdev->dev);
692 kfree(glue->wrp);
693 kfree(glue);
694 return 0;
695 }
696
697 #ifdef CONFIG_PM_SLEEP
698 static int dsps_suspend(struct device *dev)
699 {
700 struct musb_hdrc_platform_data *plat = dev->platform_data;
701 struct omap_musb_board_data *data = plat->board_data;
702
703 /* Shutdown the on-chip PHY and its PLL. */
704 if (data->set_phy_power)
705 data->set_phy_power(0);
706
707 return 0;
708 }
709
710 static int dsps_resume(struct device *dev)
711 {
712 struct musb_hdrc_platform_data *plat = dev->platform_data;
713 struct omap_musb_board_data *data = plat->board_data;
714
715 /* Start the on-chip PHY and its PLL. */
716 if (data->set_phy_power)
717 data->set_phy_power(1);
718
719 return 0;
720 }
721 #endif
722
723 static SIMPLE_DEV_PM_OPS(dsps_pm_ops, dsps_suspend, dsps_resume);
724 #endif
725
726 #ifndef __UBOOT__
727 static const struct platform_device_id musb_dsps_id_table[] __devinitconst = {
728 {
729 .name = "musb-ti81xx",
730 .driver_data = (kernel_ulong_t) &ti81xx_driver_data,
731 },
732 { }, /* Terminating Entry */
733 };
734 MODULE_DEVICE_TABLE(platform, musb_dsps_id_table);
735
736 static const struct of_device_id musb_dsps_of_match[] __devinitconst = {
737 { .compatible = "musb-ti81xx", },
738 { .compatible = "ti,ti81xx-musb", },
739 { .compatible = "ti,am335x-musb", },
740 { },
741 };
742 MODULE_DEVICE_TABLE(of, musb_dsps_of_match);
743
744 static struct platform_driver dsps_usbss_driver = {
745 .probe = dsps_probe,
746 .remove = __devexit_p(dsps_remove),
747 .driver = {
748 .name = "musb-dsps",
749 .pm = &dsps_pm_ops,
750 .of_match_table = musb_dsps_of_match,
751 },
752 .id_table = musb_dsps_id_table,
753 };
754
755 MODULE_DESCRIPTION("TI DSPS MUSB Glue Layer");
756 MODULE_AUTHOR("Ravi B <ravibabu@ti.com>");
757 MODULE_AUTHOR("Ajay Kumar Gupta <ajay.gupta@ti.com>");
758 MODULE_LICENSE("GPL v2");
759
760 static int __init dsps_init(void)
761 {
762 return platform_driver_register(&dsps_usbss_driver);
763 }
764 subsys_initcall(dsps_init);
765
766 static void __exit dsps_exit(void)
767 {
768 platform_driver_unregister(&dsps_usbss_driver);
769 }
770 module_exit(dsps_exit);
771 #endif
u-boot for qq2440