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->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         struct musb *musb = glue_to_musb(glue);
 320         struct device *dev = musb->controller;
 321
 322         pm_runtime_get_sync(dev);
 323         omap_musb_set_mailbox(glue);
 324         pm_runtime_mark_last_busy(dev);
 325         pm_runtime_put_autosuspend(dev);
 326 }
 327
 328 static irqreturn_t omap2430_musb_interrupt(int irq, void *__hci)
 329 {
 330         unsigned long   flags;
 331         irqreturn_t     retval = IRQ_NONE;
 332         struct musb     *musb = __hci;
 333
 334         spin_lock_irqsave(&musb->lock, flags);
 335
 336         musb->int_usb = musb_readb(musb->mregs, MUSB_INTRUSB);
 337         musb->int_tx = musb_readw(musb->mregs, MUSB_INTRTX);
 338         musb->int_rx = musb_readw(musb->mregs, MUSB_INTRRX);
 339
 340         if (musb->int_usb || musb->int_tx || musb->int_rx)
 341                 retval = musb_interrupt(musb);
 342
 343         spin_unlock_irqrestore(&musb->lock, flags);
 344
 345         return retval;
 346 }
 347
 348 static int omap2430_musb_init(struct musb *musb)
 349 {
 350         u32 l;
 351         int status = 0;
 352         struct device *dev = musb->controller;
 353         struct omap2430_glue *glue = dev_get_drvdata(dev->parent);
 354         struct musb_hdrc_platform_data *plat = dev_get_platdata(dev);
 355         struct omap_musb_board_data *data = plat->board_data;
 356
 357         /* We require some kind of external transceiver, hooked
 358          * up through ULPI.  TWL4030-family PMICs include one,
 359          * which needs a driver, drivers aren't always needed.
 360          */
 361         if (dev->parent->of_node) {
 362                 musb->phy = devm_phy_get(dev->parent, "usb2-phy");
 363
 364                 /* We can't totally remove musb->xceiv as of now because
 365                  * musb core uses xceiv.state and xceiv.otg. Once we have
 366                  * a separate state machine to handle otg, these can be moved
 367                  * out of xceiv and then we can start using the generic PHY
 368                  * framework
 369                  */
 370                 musb->xceiv = devm_usb_get_phy_by_phandle(dev->parent,
 371                     "usb-phy", 0);
 372         } else {
 373                 musb->xceiv = devm_usb_get_phy_dev(dev, 0);
 374                 musb->phy = devm_phy_get(dev, "usb");
 375         }
 376
 377         if (IS_ERR(musb->xceiv)) {
 378                 status = PTR_ERR(musb->xceiv);
 379
 380                 if (status == -ENXIO)
 381                         return status;
 382
 383                 pr_err("HS USB OTG: no transceiver configured\n");
 384                 return -EPROBE_DEFER;
 385         }
 386
 387         if (IS_ERR(musb->phy)) {
 388                 pr_err("HS USB OTG: no PHY configured\n");
 389                 return PTR_ERR(musb->phy);
 390         }
 391         musb->isr = omap2430_musb_interrupt;
 392
 393         status = pm_runtime_get_sync(dev);
 394         if (status < 0) {
 395                 dev_err(dev, "pm_runtime_get_sync FAILED %d\n", status);
 396                 goto err1;
 397         }
 398
 399         l = musb_readl(musb->mregs, OTG_INTERFSEL);
 400
 401         if (data->interface_type == MUSB_INTERFACE_UTMI) {
 402                 /* OMAP4 uses Internal PHY GS70 which uses UTMI interface */
 403                 l &= ~ULPI_12PIN;       /* Disable ULPI */
 404                 l |= UTMI_8BIT;         /* Enable UTMI  */
 405         } else {
 406                 l |= ULPI_12PIN;
 407         }
 408
 409         musb_writel(musb->mregs, OTG_INTERFSEL, l);
 410
 411         pr_debug("HS USB OTG: revision 0x%x, sysconfig 0x%02x, "
 412                         "sysstatus 0x%x, intrfsel 0x%x, simenable  0x%x\n",
 413                         musb_readl(musb->mregs, OTG_REVISION),
 414                         musb_readl(musb->mregs, OTG_SYSCONFIG),
 415                         musb_readl(musb->mregs, OTG_SYSSTATUS),
 416                         musb_readl(musb->mregs, OTG_INTERFSEL),
 417                         musb_readl(musb->mregs, OTG_SIMENABLE));
 418
 419         setup_timer(&musb_idle_timer, musb_do_idle, (unsigned long) musb);
 420
 421         if (glue->status != OMAP_MUSB_UNKNOWN)
 422                 omap_musb_set_mailbox(glue);
 423
 424         phy_init(musb->phy);
 425         phy_power_on(musb->phy);
 426
 427         pm_runtime_put_noidle(musb->controller);
 428         return 0;
 429
 430 err1:
 431         return status;
 432 }
 433
 434 static void omap2430_musb_enable(struct musb *musb)
 435 {
 436         u8              devctl;
 437         unsigned long timeout = jiffies + msecs_to_jiffies(1000);
 438         struct device *dev = musb->controller;
 439         struct omap2430_glue *glue = dev_get_drvdata(dev->parent);
 440         struct musb_hdrc_platform_data *pdata = dev_get_platdata(dev);
 441         struct omap_musb_board_data *data = pdata->board_data;
 442
 443         switch (glue->status) {
 444
 445         case OMAP_MUSB_ID_GROUND:
 446                 omap_control_usb_set_mode(glue->control_otghs, USB_MODE_HOST);
 447                 if (data->interface_type != MUSB_INTERFACE_UTMI)
 448                         break;
 449                 devctl = musb_readb(musb->mregs, MUSB_DEVCTL);
 450                 /* start the session */
 451                 devctl |= MUSB_DEVCTL_SESSION;
 452                 musb_writeb(musb->mregs, MUSB_DEVCTL, devctl);
 453                 while (musb_readb(musb->mregs, MUSB_DEVCTL) &
 454                                 MUSB_DEVCTL_BDEVICE) {
 455                         cpu_relax();
 456
 457                         if (time_after(jiffies, timeout)) {
 458                                 dev_err(dev, "configured as A device timeout");
 459                                 break;
 460                         }
 461                 }
 462                 break;
 463
 464         case OMAP_MUSB_VBUS_VALID:
 465                 omap_control_usb_set_mode(glue->control_otghs, USB_MODE_DEVICE);
 466                 break;
 467
 468         default:
 469                 break;
 470         }
 471 }
 472
 473 static void omap2430_musb_disable(struct musb *musb)
 474 {
 475         struct device *dev = musb->controller;
 476         struct omap2430_glue *glue = dev_get_drvdata(dev->parent);
 477
 478         if (glue->status != OMAP_MUSB_UNKNOWN)
 479                 omap_control_usb_set_mode(glue->control_otghs,
 480                         USB_MODE_DISCONNECT);
 481 }
 482
 483 static int omap2430_musb_exit(struct musb *musb)
 484 {
 485         del_timer_sync(&musb_idle_timer);
 486
 487         omap2430_low_level_exit(musb);
 488         phy_power_off(musb->phy);
 489         phy_exit(musb->phy);
 490
 491         return 0;
 492 }
 493
 494 static const struct musb_platform_ops omap2430_ops = {
 495         .init           = omap2430_musb_init,
 496         .exit           = omap2430_musb_exit,
 497
 498         .set_mode       = omap2430_musb_set_mode,
 499         .try_idle       = omap2430_musb_try_idle,
 500
 501         .set_vbus       = omap2430_musb_set_vbus,
 502
 503         .enable         = omap2430_musb_enable,
 504         .disable        = omap2430_musb_disable,
 505 };
 506
 507 static u64 omap2430_dmamask = DMA_BIT_MASK(32);
 508
 509 static int omap2430_probe(struct platform_device *pdev)
 510 {
 511         struct resource                 musb_resources[3];
 512         struct musb_hdrc_platform_data  *pdata = dev_get_platdata(&pdev->dev);
 513         struct omap_musb_board_data     *data;
 514         struct platform_device          *musb;
 515         struct omap2430_glue            *glue;
 516         struct device_node              *np = pdev->dev.of_node;
 517         struct musb_hdrc_config         *config;
 518         int                             ret = -ENOMEM;
 519
 520         glue = devm_kzalloc(&pdev->dev, sizeof(*glue), GFP_KERNEL);
 521         if (!glue) {
 522                 dev_err(&pdev->dev, "failed to allocate glue context\n");
 523                 goto err0;
 524         }
 525
 526         musb = platform_device_alloc("musb-hdrc", PLATFORM_DEVID_AUTO);
 527         if (!musb) {
 528                 dev_err(&pdev->dev, "failed to allocate musb device\n");
 529                 goto err0;
 530         }
 531
 532         musb->dev.parent                = &pdev->dev;
 533         musb->dev.dma_mask              = &omap2430_dmamask;
 534         musb->dev.coherent_dma_mask     = omap2430_dmamask;
 535
 536         glue->dev                       = &pdev->dev;
 537         glue->musb                      = musb;
 538         glue->status                    = OMAP_MUSB_UNKNOWN;
 539         glue->control_otghs = ERR_PTR(-ENODEV);
 540
 541         if (np) {
 542                 struct device_node *control_node;
 543                 struct platform_device *control_pdev;
 544
 545                 pdata = devm_kzalloc(&pdev->dev, sizeof(*pdata), GFP_KERNEL);
 546                 if (!pdata) {
 547                         dev_err(&pdev->dev,
 548                                 "failed to allocate musb platform data\n");
 549                         goto err2;
 550                 }
 551
 552                 data = devm_kzalloc(&pdev->dev, sizeof(*data), GFP_KERNEL);
 553                 if (!data) {
 554                         dev_err(&pdev->dev,
 555                                 "failed to allocate musb board data\n");
 556                         goto err2;
 557                 }
 558
 559                 config = devm_kzalloc(&pdev->dev, sizeof(*config), GFP_KERNEL);
 560                 if (!config) {
 561                         dev_err(&pdev->dev,
 562                                 "failed to allocate musb hdrc config\n");
 563                         goto err2;
 564                 }
 565
 566                 of_property_read_u32(np, "mode", (u32 *)&pdata->mode);
 567                 of_property_read_u32(np, "interface-type",
 568                                                 (u32 *)&data->interface_type);
 569                 of_property_read_u32(np, "num-eps", (u32 *)&config->num_eps);
 570                 of_property_read_u32(np, "ram-bits", (u32 *)&config->ram_bits);
 571                 of_property_read_u32(np, "power", (u32 *)&pdata->power);
 572                 config->multipoint = of_property_read_bool(np, "multipoint");
 573
 574                 pdata->board_data       = data;
 575                 pdata->config           = config;
 576
 577                 control_node = of_parse_phandle(np, "ctrl-module", 0);
 578                 if (control_node) {
 579                         control_pdev = of_find_device_by_node(control_node);
 580                         if (!control_pdev) {
 581                                 dev_err(&pdev->dev, "Failed to get control device\n");
 582                                 ret = -EINVAL;
 583                                 goto err2;
 584                         }
 585                         glue->control_otghs = &control_pdev->dev;
 586                 }
 587         }
 588         pdata->platform_ops             = &omap2430_ops;
 589
 590         platform_set_drvdata(pdev, glue);
 591
 592         /*
 593          * REVISIT if we ever have two instances of the wrapper, we will be
 594          * in big trouble
 595          */
 596         _glue   = glue;
 597
 598         INIT_WORK(&glue->omap_musb_mailbox_work, omap_musb_mailbox_work);
 599
 600         memset(musb_resources, 0x00, sizeof(*musb_resources) *
 601                         ARRAY_SIZE(musb_resources));
 602
 603         musb_resources[0].name = pdev->resource[0].name;
 604         musb_resources[0].start = pdev->resource[0].start;
 605         musb_resources[0].end = pdev->resource[0].end;
 606         musb_resources[0].flags = pdev->resource[0].flags;
 607
 608         musb_resources[1].name = pdev->resource[1].name;
 609         musb_resources[1].start = pdev->resource[1].start;
 610         musb_resources[1].end = pdev->resource[1].end;
 611         musb_resources[1].flags = pdev->resource[1].flags;
 612
 613         musb_resources[2].name = pdev->resource[2].name;
 614         musb_resources[2].start = pdev->resource[2].start;
 615         musb_resources[2].end = pdev->resource[2].end;
 616         musb_resources[2].flags = pdev->resource[2].flags;
 617
 618         ret = platform_device_add_resources(musb, musb_resources,
 619                         ARRAY_SIZE(musb_resources));
 620         if (ret) {
 621                 dev_err(&pdev->dev, "failed to add resources\n");
 622                 goto err2;
 623         }
 624
 625         ret = platform_device_add_data(musb, pdata, sizeof(*pdata));
 626         if (ret) {
 627                 dev_err(&pdev->dev, "failed to add platform_data\n");
 628                 goto err2;
 629         }
 630
 631         pm_runtime_enable(&pdev->dev);
 632
 633         ret = platform_device_add(musb);
 634         if (ret) {
 635                 dev_err(&pdev->dev, "failed to register musb device\n");
 636                 goto err2;
 637         }
 638
 639         return 0;
 640
 641 err2:
 642         platform_device_put(musb);
 643
 644 err0:
 645         return ret;
 646 }
 647
 648 static int omap2430_remove(struct platform_device *pdev)
 649 {
 650         struct omap2430_glue            *glue = platform_get_drvdata(pdev);
 651
 652         cancel_work_sync(&glue->omap_musb_mailbox_work);
 653         platform_device_unregister(glue->musb);
 654
 655         return 0;
 656 }
 657
 658 #ifdef CONFIG_PM
 659
 660 static int omap2430_runtime_suspend(struct device *dev)
 661 {
 662         struct omap2430_glue            *glue = dev_get_drvdata(dev);
 663         struct musb                     *musb = glue_to_musb(glue);
 664
 665         if (musb) {
 666                 musb->context.otg_interfsel = musb_readl(musb->mregs,
 667                                 OTG_INTERFSEL);
 668
 669                 omap2430_low_level_exit(musb);
 670         }
 671
 672         return 0;
 673 }
 674
 675 static int omap2430_runtime_resume(struct device *dev)
 676 {
 677         struct omap2430_glue            *glue = dev_get_drvdata(dev);
 678         struct musb                     *musb = glue_to_musb(glue);
 679
 680         if (musb) {
 681                 omap2430_low_level_init(musb);
 682                 musb_writel(musb->mregs, OTG_INTERFSEL,
 683                                 musb->context.otg_interfsel);
 684         }
 685
 686         return 0;
 687 }
 688
 689 static struct dev_pm_ops omap2430_pm_ops = {
 690         .runtime_suspend = omap2430_runtime_suspend,
 691         .runtime_resume = omap2430_runtime_resume,
 692 };
 693
 694 #define DEV_PM_OPS      (&omap2430_pm_ops)
 695 #else
 696 #define DEV_PM_OPS      NULL
 697 #endif
 698
 699 #ifdef CONFIG_OF
 700 static const struct of_device_id omap2430_id_table[] = {
 701         {
 702                 .compatible = "ti,omap4-musb"
 703         },
 704         {
 705                 .compatible = "ti,omap3-musb"
 706         },
 707         {},
 708 };
 709 MODULE_DEVICE_TABLE(of, omap2430_id_table);
 710 #endif
 711
 712 static struct platform_driver omap2430_driver = {
 713         .probe          = omap2430_probe,
 714         .remove         = omap2430_remove,
 715         .driver         = {
 716                 .name   = "musb-omap2430",
 717                 .pm     = DEV_PM_OPS,
 718                 .of_match_table = of_match_ptr(omap2430_id_table),
 719         },
 720 };
 721
 722 MODULE_DESCRIPTION("OMAP2PLUS MUSB Glue Layer");
 723 MODULE_AUTHOR("Felipe Balbi <balbi@ti.com>");
 724 MODULE_LICENSE("GPL v2");
 725
 726 static int __init omap2430_init(void)
 727 {
 728         return platform_driver_register(&omap2430_driver);
 729 }
 730 subsys_initcall(omap2430_init);
 731
 732 static void __exit omap2430_exit(void)
 733 {
 734         platform_driver_unregister(&omap2430_driver);
 735 }
 736 module_exit(omap2430_exit);