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/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
 311
 312 static void omap_musb_mailbox_work(struct work_struct *mailbox_work)
 313 {
 314         struct omap2430_glue *glue = container_of(mailbox_work,
 315                                 struct omap2430_glue, omap_musb_mailbox_work);
 316         omap_musb_set_mailbox(glue);
 317 }
 318
 319 static irqreturn_t omap2430_musb_interrupt(int irq, void *__hci)
 320 {
 321         unsigned long   flags;
 322         irqreturn_t     retval = IRQ_NONE;
 323         struct musb     *musb = __hci;
 324
 325         spin_lock_irqsave(&musb->lock, flags);
 326
 327         musb->int_usb = musb_readb(musb->mregs, MUSB_INTRUSB);
 328         musb->int_tx = musb_readw(musb->mregs, MUSB_INTRTX);
 329         musb->int_rx = musb_readw(musb->mregs, MUSB_INTRRX);
 330
 331         if (musb->int_usb || musb->int_tx || musb->int_rx)
 332                 retval = musb_interrupt(musb);
 333
 334         spin_unlock_irqrestore(&musb->lock, flags);
 335
 336         return retval;
 337 }
 338
 339 static int omap2430_musb_init(struct musb *musb)
 340 {
 341         u32 l;
 342         int status = 0;
 343         struct device *dev = musb->controller;
 344         struct omap2430_glue *glue = dev_get_drvdata(dev->parent);
 345         struct musb_hdrc_platform_data *plat = dev_get_platdata(dev);
 346         struct omap_musb_board_data *data = plat->board_data;
 347
 348         /* We require some kind of external transceiver, hooked
 349          * up through ULPI.  TWL4030-family PMICs include one,
 350          * which needs a driver, drivers aren't always needed.
 351          */
 352         if (dev->parent->of_node) {
 353                 musb->phy = devm_phy_get(dev->parent, "usb2-phy");
 354
 355                 /* We can't totally remove musb->xceiv as of now because
 356                  * musb core uses xceiv.state and xceiv.otg. Once we have
 357                  * a separate state machine to handle otg, these can be moved
 358                  * out of xceiv and then we can start using the generic PHY
 359                  * framework
 360                  */
 361                 musb->xceiv = devm_usb_get_phy_by_phandle(dev->parent,
 362                     "usb-phy", 0);
 363         } else {
 364                 musb->xceiv = devm_usb_get_phy_dev(dev, 0);
 365                 musb->phy = devm_phy_get(dev, "usb");
 366         }
 367
 368         if (IS_ERR(musb->xceiv)) {
 369                 status = PTR_ERR(musb->xceiv);
 370
 371                 if (status == -ENXIO)
 372                         return status;
 373
 374                 pr_err("HS USB OTG: no transceiver configured\n");
 375                 return -EPROBE_DEFER;
 376         }
 377
 378         if (IS_ERR(musb->phy)) {
 379                 pr_err("HS USB OTG: no PHY configured\n");
 380                 return PTR_ERR(musb->phy);
 381         }
 382         musb->isr = omap2430_musb_interrupt;
 383
 384         status = pm_runtime_get_sync(dev);
 385         if (status < 0) {
 386                 dev_err(dev, "pm_runtime_get_sync FAILED %d\n", status);
 387                 goto err1;
 388         }
 389
 390         l = musb_readl(musb->mregs, OTG_INTERFSEL);
 391
 392         if (data->interface_type == MUSB_INTERFACE_UTMI) {
 393                 /* OMAP4 uses Internal PHY GS70 which uses UTMI interface */
 394                 l &= ~ULPI_12PIN;       /* Disable ULPI */
 395                 l |= UTMI_8BIT;         /* Enable UTMI  */
 396         } else {
 397                 l |= ULPI_12PIN;
 398         }
 399
 400         musb_writel(musb->mregs, OTG_INTERFSEL, l);
 401
 402         pr_debug("HS USB OTG: revision 0x%x, sysconfig 0x%02x, "
 403                         "sysstatus 0x%x, intrfsel 0x%x, simenable  0x%x\n",
 404                         musb_readl(musb->mregs, OTG_REVISION),
 405                         musb_readl(musb->mregs, OTG_SYSCONFIG),
 406                         musb_readl(musb->mregs, OTG_SYSSTATUS),
 407                         musb_readl(musb->mregs, OTG_INTERFSEL),
 408                         musb_readl(musb->mregs, OTG_SIMENABLE));
 409
 410         setup_timer(&musb_idle_timer, musb_do_idle, (unsigned long) musb);
 411
 412         if (glue->status != OMAP_MUSB_UNKNOWN)
 413                 omap_musb_set_mailbox(glue);
 414
 415         phy_init(musb->phy);
 416
 417         pm_runtime_put_noidle(musb->controller);
 418         return 0;
 419
 420 err1:
 421         return status;
 422 }
 423
 424 static void omap2430_musb_enable(struct musb *musb)
 425 {
 426         u8              devctl;
 427         unsigned long timeout = jiffies + msecs_to_jiffies(1000);
 428         struct device *dev = musb->controller;
 429         struct omap2430_glue *glue = dev_get_drvdata(dev->parent);
 430         struct musb_hdrc_platform_data *pdata = dev_get_platdata(dev);
 431         struct omap_musb_board_data *data = pdata->board_data;
 432
 433         switch (glue->status) {
 434
 435         case OMAP_MUSB_ID_GROUND:
 436                 omap_control_usb_set_mode(glue->control_otghs, USB_MODE_HOST);
 437                 if (data->interface_type != MUSB_INTERFACE_UTMI)
 438                         break;
 439                 devctl = musb_readb(musb->mregs, MUSB_DEVCTL);
 440                 /* start the session */
 441                 devctl |= MUSB_DEVCTL_SESSION;
 442                 musb_writeb(musb->mregs, MUSB_DEVCTL, devctl);
 443                 while (musb_readb(musb->mregs, MUSB_DEVCTL) &
 444                                 MUSB_DEVCTL_BDEVICE) {
 445                         cpu_relax();
 446
 447                         if (time_after(jiffies, timeout)) {
 448                                 dev_err(dev, "configured as A device timeout");
 449                                 break;
 450                         }
 451                 }
 452                 break;
 453
 454         case OMAP_MUSB_VBUS_VALID:
 455                 omap_control_usb_set_mode(glue->control_otghs, USB_MODE_DEVICE);
 456                 break;
 457
 458         default:
 459                 break;
 460         }
 461 }
 462
 463 static void omap2430_musb_disable(struct musb *musb)
 464 {
 465         struct device *dev = musb->controller;
 466         struct omap2430_glue *glue = dev_get_drvdata(dev->parent);
 467
 468         if (glue->status != OMAP_MUSB_UNKNOWN)
 469                 omap_control_usb_set_mode(glue->control_otghs,
 470                         USB_MODE_DISCONNECT);
 471 }
 472
 473 static int omap2430_musb_exit(struct musb *musb)
 474 {
 475         del_timer_sync(&musb_idle_timer);
 476
 477         omap2430_low_level_exit(musb);
 478         phy_exit(musb->phy);
 479
 480         return 0;
 481 }
 482
 483 static const struct musb_platform_ops omap2430_ops = {
 484         .init           = omap2430_musb_init,
 485         .exit           = omap2430_musb_exit,
 486
 487         .set_mode       = omap2430_musb_set_mode,
 488         .try_idle       = omap2430_musb_try_idle,
 489
 490         .set_vbus       = omap2430_musb_set_vbus,
 491
 492         .enable         = omap2430_musb_enable,
 493         .disable        = omap2430_musb_disable,
 494 };
 495
 496 static u64 omap2430_dmamask = DMA_BIT_MASK(32);
 497
 498 static int omap2430_probe(struct platform_device *pdev)
 499 {
 500         struct resource                 musb_resources[3];
 501         struct musb_hdrc_platform_data  *pdata = dev_get_platdata(&pdev->dev);
 502         struct omap_musb_board_data     *data;
 503         struct platform_device          *musb;
 504         struct omap2430_glue            *glue;
 505         struct device_node              *np = pdev->dev.of_node;
 506         struct musb_hdrc_config         *config;
 507         int                             ret = -ENOMEM;
 508
 509         glue = devm_kzalloc(&pdev->dev, sizeof(*glue), GFP_KERNEL);
 510         if (!glue) {
 511                 dev_err(&pdev->dev, "failed to allocate glue context\n");
 512                 goto err0;
 513         }
 514
 515         musb = platform_device_alloc("musb-hdrc", PLATFORM_DEVID_AUTO);
 516         if (!musb) {
 517                 dev_err(&pdev->dev, "failed to allocate musb device\n");
 518                 goto err0;
 519         }
 520
 521         musb->dev.parent                = &pdev->dev;
 522         musb->dev.dma_mask              = &omap2430_dmamask;
 523         musb->dev.coherent_dma_mask     = omap2430_dmamask;
 524
 525         glue->dev                       = &pdev->dev;
 526         glue->musb                      = musb;
 527         glue->status                    = OMAP_MUSB_UNKNOWN;
 528         glue->control_otghs = ERR_PTR(-ENODEV);
 529
 530         if (np) {
 531                 struct device_node *control_node;
 532                 struct platform_device *control_pdev;
 533
 534                 pdata = devm_kzalloc(&pdev->dev, sizeof(*pdata), GFP_KERNEL);
 535                 if (!pdata) {
 536                         dev_err(&pdev->dev,
 537                                 "failed to allocate musb platform data\n");
 538                         goto err2;
 539                 }
 540
 541                 data = devm_kzalloc(&pdev->dev, sizeof(*data), GFP_KERNEL);
 542                 if (!data) {
 543                         dev_err(&pdev->dev,
 544                                 "failed to allocate musb board data\n");
 545                         goto err2;
 546                 }
 547
 548                 config = devm_kzalloc(&pdev->dev, sizeof(*config), GFP_KERNEL);
 549                 if (!config) {
 550                         dev_err(&pdev->dev,
 551                                 "failed to allocate musb hdrc config\n");
 552                         goto err2;
 553                 }
 554
 555                 of_property_read_u32(np, "mode", (u32 *)&pdata->mode);
 556                 of_property_read_u32(np, "interface-type",
 557                                                 (u32 *)&data->interface_type);
 558                 of_property_read_u32(np, "num-eps", (u32 *)&config->num_eps);
 559                 of_property_read_u32(np, "ram-bits", (u32 *)&config->ram_bits);
 560                 of_property_read_u32(np, "power", (u32 *)&pdata->power);
 561                 config->multipoint = of_property_read_bool(np, "multipoint");
 562
 563                 pdata->board_data       = data;
 564                 pdata->config           = config;
 565
 566                 control_node = of_parse_phandle(np, "ctrl-module", 0);
 567                 if (control_node) {
 568                         control_pdev = of_find_device_by_node(control_node);
 569                         if (!control_pdev) {
 570                                 dev_err(&pdev->dev, "Failed to get control device\n");
 571                                 ret = -EINVAL;
 572                                 goto err2;
 573                         }
 574                         glue->control_otghs = &control_pdev->dev;
 575                 }
 576         }
 577         pdata->platform_ops             = &omap2430_ops;
 578
 579         platform_set_drvdata(pdev, glue);
 580
 581         /*
 582          * REVISIT if we ever have two instances of the wrapper, we will be
 583          * in big trouble
 584          */
 585         _glue   = glue;
 586
 587         INIT_WORK(&glue->omap_musb_mailbox_work, omap_musb_mailbox_work);
 588
 589         memset(musb_resources, 0x00, sizeof(*musb_resources) *
 590                         ARRAY_SIZE(musb_resources));
 591
 592         musb_resources[0].name = pdev->resource[0].name;
 593         musb_resources[0].start = pdev->resource[0].start;
 594         musb_resources[0].end = pdev->resource[0].end;
 595         musb_resources[0].flags = pdev->resource[0].flags;
 596
 597         musb_resources[1].name = pdev->resource[1].name;
 598         musb_resources[1].start = pdev->resource[1].start;
 599         musb_resources[1].end = pdev->resource[1].end;
 600         musb_resources[1].flags = pdev->resource[1].flags;
 601
 602         musb_resources[2].name = pdev->resource[2].name;
 603         musb_resources[2].start = pdev->resource[2].start;
 604         musb_resources[2].end = pdev->resource[2].end;
 605         musb_resources[2].flags = pdev->resource[2].flags;
 606
 607         ret = platform_device_add_resources(musb, musb_resources,
 608                         ARRAY_SIZE(musb_resources));
 609         if (ret) {
 610                 dev_err(&pdev->dev, "failed to add resources\n");
 611                 goto err2;
 612         }
 613
 614         ret = platform_device_add_data(musb, pdata, sizeof(*pdata));
 615         if (ret) {
 616                 dev_err(&pdev->dev, "failed to add platform_data\n");
 617                 goto err2;
 618         }
 619
 620         pm_runtime_enable(&pdev->dev);
 621
 622         ret = platform_device_add(musb);
 623         if (ret) {
 624                 dev_err(&pdev->dev, "failed to register musb device\n");
 625                 goto err2;
 626         }
 627
 628         return 0;
 629
 630 err2:
 631         platform_device_put(musb);
 632
 633 err0:
 634         return ret;
 635 }
 636
 637 static int omap2430_remove(struct platform_device *pdev)
 638 {
 639         struct omap2430_glue            *glue = platform_get_drvdata(pdev);
 640
 641         cancel_work_sync(&glue->omap_musb_mailbox_work);
 642         platform_device_unregister(glue->musb);
 643
 644         return 0;
 645 }
 646
 647 #ifdef CONFIG_PM
 648
 649 static int omap2430_runtime_suspend(struct device *dev)
 650 {
 651         struct omap2430_glue            *glue = dev_get_drvdata(dev);
 652         struct musb                     *musb = glue_to_musb(glue);
 653
 654         if (musb) {
 655                 musb->context.otg_interfsel = musb_readl(musb->mregs,
 656                                 OTG_INTERFSEL);
 657
 658                 omap2430_low_level_exit(musb);
 659                 phy_power_off(musb->phy);
 660         }
 661
 662         return 0;
 663 }
 664
 665 static int omap2430_runtime_resume(struct device *dev)
 666 {
 667         struct omap2430_glue            *glue = dev_get_drvdata(dev);
 668         struct musb                     *musb = glue_to_musb(glue);
 669
 670         if (musb) {
 671                 omap2430_low_level_init(musb);
 672                 musb_writel(musb->mregs, OTG_INTERFSEL,
 673                                 musb->context.otg_interfsel);
 674                 phy_power_on(musb->phy);
 675         }
 676
 677         return 0;
 678 }
 679
 680 static struct dev_pm_ops omap2430_pm_ops = {
 681         .runtime_suspend = omap2430_runtime_suspend,
 682         .runtime_resume = omap2430_runtime_resume,
 683 };
 684
 685 #define DEV_PM_OPS      (&omap2430_pm_ops)
 686 #else
 687 #define DEV_PM_OPS      NULL
 688 #endif
 689
 690 #ifdef CONFIG_OF
 691 static const struct of_device_id omap2430_id_table[] = {
 692         {
 693                 .compatible = "ti,omap4-musb"
 694         },
 695         {
 696                 .compatible = "ti,omap3-musb"
 697         },
 698         {},
 699 };
 700 MODULE_DEVICE_TABLE(of, omap2430_id_table);
 701 #endif
 702
 703 static struct platform_driver omap2430_driver = {
 704         .probe          = omap2430_probe,
 705         .remove         = omap2430_remove,
 706         .driver         = {
 707                 .name   = "musb-omap2430",
 708                 .pm     = DEV_PM_OPS,
 709                 .of_match_table = of_match_ptr(omap2430_id_table),
 710         },
 711 };
 712
 713 MODULE_DESCRIPTION("OMAP2PLUS MUSB Glue Layer");
 714 MODULE_AUTHOR("Felipe Balbi <balbi@ti.com>");
 715 MODULE_LICENSE("GPL v2");
 716
 717 static int __init omap2430_init(void)
 718 {
 719         return platform_driver_register(&omap2430_driver);
 720 }
 721 subsys_initcall(omap2430_init);
 722
 723 static void __exit omap2430_exit(void)
 724 {
 725         platform_driver_unregister(&omap2430_driver);
 726 }
 727 module_exit(omap2430_exit);