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         .quirks         = MUSB_DMA_INVENTRA,
 497 #ifdef CONFIG_USB_INVENTRA_DMA
 498         .dma_init       = musbhs_dma_controller_create,
 499         .dma_exit       = musbhs_dma_controller_destroy,
 500 #endif
 501         .init           = omap2430_musb_init,
 502         .exit           = omap2430_musb_exit,
 503
 504         .set_mode       = omap2430_musb_set_mode,
 505         .try_idle       = omap2430_musb_try_idle,
 506
 507         .set_vbus       = omap2430_musb_set_vbus,
 508
 509         .enable         = omap2430_musb_enable,
 510         .disable        = omap2430_musb_disable,
 511 };
 512
 513 static u64 omap2430_dmamask = DMA_BIT_MASK(32);
 514
 515 static int omap2430_probe(struct platform_device *pdev)
 516 {
 517         struct resource                 musb_resources[3];
 518         struct musb_hdrc_platform_data  *pdata = dev_get_platdata(&pdev->dev);
 519         struct omap_musb_board_data     *data;
 520         struct platform_device          *musb;
 521         struct omap2430_glue            *glue;
 522         struct device_node              *np = pdev->dev.of_node;
 523         struct musb_hdrc_config         *config;
 524         int                             ret = -ENOMEM, val;
 525
 526         glue = devm_kzalloc(&pdev->dev, sizeof(*glue), GFP_KERNEL);
 527         if (!glue)
 528                 goto err0;
 529
 530         musb = platform_device_alloc("musb-hdrc", PLATFORM_DEVID_AUTO);
 531         if (!musb) {
 532                 dev_err(&pdev->dev, "failed to allocate musb device\n");
 533                 goto err0;
 534         }
 535
 536         musb->dev.parent                = &pdev->dev;
 537         musb->dev.dma_mask              = &omap2430_dmamask;
 538         musb->dev.coherent_dma_mask     = omap2430_dmamask;
 539
 540         glue->dev                       = &pdev->dev;
 541         glue->musb                      = musb;
 542         glue->status                    = OMAP_MUSB_UNKNOWN;
 543         glue->control_otghs = ERR_PTR(-ENODEV);
 544
 545         if (np) {
 546                 struct device_node *control_node;
 547                 struct platform_device *control_pdev;
 548
 549                 pdata = devm_kzalloc(&pdev->dev, sizeof(*pdata), GFP_KERNEL);
 550                 if (!pdata)
 551                         goto err2;
 552
 553                 data = devm_kzalloc(&pdev->dev, sizeof(*data), GFP_KERNEL);
 554                 if (!data)
 555                         goto err2;
 556
 557                 config = devm_kzalloc(&pdev->dev, sizeof(*config), GFP_KERNEL);
 558                 if (!config)
 559                         goto err2;
 560
 561                 of_property_read_u32(np, "mode", (u32 *)&pdata->mode);
 562                 of_property_read_u32(np, "interface-type",
 563                                                 (u32 *)&data->interface_type);
 564                 of_property_read_u32(np, "num-eps", (u32 *)&config->num_eps);
 565                 of_property_read_u32(np, "ram-bits", (u32 *)&config->ram_bits);
 566                 of_property_read_u32(np, "power", (u32 *)&pdata->power);
 567
 568                 ret = of_property_read_u32(np, "multipoint", &val);
 569                 if (!ret && val)
 570                         config->multipoint = true;
 571
 572                 pdata->board_data       = data;
 573                 pdata->config           = config;
 574
 575                 control_node = of_parse_phandle(np, "ctrl-module", 0);
 576                 if (control_node) {
 577                         control_pdev = of_find_device_by_node(control_node);
 578                         if (!control_pdev) {
 579                                 dev_err(&pdev->dev, "Failed to get control device\n");
 580                                 ret = -EINVAL;
 581                                 goto err2;
 582                         }
 583                         glue->control_otghs = &control_pdev->dev;
 584                 }
 585         }
 586         pdata->platform_ops             = &omap2430_ops;
 587
 588         platform_set_drvdata(pdev, glue);
 589
 590         /*
 591          * REVISIT if we ever have two instances of the wrapper, we will be
 592          * in big trouble
 593          */
 594         _glue   = glue;
 595
 596         INIT_WORK(&glue->omap_musb_mailbox_work, omap_musb_mailbox_work);
 597
 598         memset(musb_resources, 0x00, sizeof(*musb_resources) *
 599                         ARRAY_SIZE(musb_resources));
 600
 601         musb_resources[0].name = pdev->resource[0].name;
 602         musb_resources[0].start = pdev->resource[0].start;
 603         musb_resources[0].end = pdev->resource[0].end;
 604         musb_resources[0].flags = pdev->resource[0].flags;
 605
 606         musb_resources[1].name = pdev->resource[1].name;
 607         musb_resources[1].start = pdev->resource[1].start;
 608         musb_resources[1].end = pdev->resource[1].end;
 609         musb_resources[1].flags = pdev->resource[1].flags;
 610
 611         musb_resources[2].name = pdev->resource[2].name;
 612         musb_resources[2].start = pdev->resource[2].start;
 613         musb_resources[2].end = pdev->resource[2].end;
 614         musb_resources[2].flags = pdev->resource[2].flags;
 615
 616         ret = platform_device_add_resources(musb, musb_resources,
 617                         ARRAY_SIZE(musb_resources));
 618         if (ret) {
 619                 dev_err(&pdev->dev, "failed to add resources\n");
 620                 goto err2;
 621         }
 622
 623         ret = platform_device_add_data(musb, pdata, sizeof(*pdata));
 624         if (ret) {
 625                 dev_err(&pdev->dev, "failed to add platform_data\n");
 626                 goto err2;
 627         }
 628
 629         pm_runtime_enable(&pdev->dev);
 630
 631         ret = platform_device_add(musb);
 632         if (ret) {
 633                 dev_err(&pdev->dev, "failed to register musb device\n");
 634                 goto err2;
 635         }
 636
 637         return 0;
 638
 639 err2:
 640         platform_device_put(musb);
 641
 642 err0:
 643         return ret;
 644 }
 645
 646 static int omap2430_remove(struct platform_device *pdev)
 647 {
 648         struct omap2430_glue            *glue = platform_get_drvdata(pdev);
 649
 650         cancel_work_sync(&glue->omap_musb_mailbox_work);
 651         platform_device_unregister(glue->musb);
 652
 653         return 0;
 654 }
 655
 656 #ifdef CONFIG_PM
 657
 658 static int omap2430_runtime_suspend(struct device *dev)
 659 {
 660         struct omap2430_glue            *glue = dev_get_drvdata(dev);
 661         struct musb                     *musb = glue_to_musb(glue);
 662
 663         if (musb) {
 664                 musb->context.otg_interfsel = musb_readl(musb->mregs,
 665                                 OTG_INTERFSEL);
 666
 667                 omap2430_low_level_exit(musb);
 668         }
 669
 670         return 0;
 671 }
 672
 673 static int omap2430_runtime_resume(struct device *dev)
 674 {
 675         struct omap2430_glue            *glue = dev_get_drvdata(dev);
 676         struct musb                     *musb = glue_to_musb(glue);
 677
 678         if (musb) {
 679                 omap2430_low_level_init(musb);
 680                 musb_writel(musb->mregs, OTG_INTERFSEL,
 681                                 musb->context.otg_interfsel);
 682         }
 683
 684         return 0;
 685 }
 686
 687 static struct dev_pm_ops omap2430_pm_ops = {
 688         .runtime_suspend = omap2430_runtime_suspend,
 689         .runtime_resume = omap2430_runtime_resume,
 690 };
 691
 692 #define DEV_PM_OPS      (&omap2430_pm_ops)
 693 #else
 694 #define DEV_PM_OPS      NULL
 695 #endif
 696
 697 #ifdef CONFIG_OF
 698 static const struct of_device_id omap2430_id_table[] = {
 699         {
 700                 .compatible = "ti,omap4-musb"
 701         },
 702         {
 703                 .compatible = "ti,omap3-musb"
 704         },
 705         {},
 706 };
 707 MODULE_DEVICE_TABLE(of, omap2430_id_table);
 708 #endif
 709
 710 static struct platform_driver omap2430_driver = {
 711         .probe          = omap2430_probe,
 712         .remove         = omap2430_remove,
 713         .driver         = {
 714                 .name   = "musb-omap2430",
 715                 .pm     = DEV_PM_OPS,
 716                 .of_match_table = of_match_ptr(omap2430_id_table),
 717         },
 718 };
 719
 720 MODULE_DESCRIPTION("OMAP2PLUS MUSB Glue Layer");
 721 MODULE_AUTHOR("Felipe Balbi <balbi@ti.com>");
 722 MODULE_LICENSE("GPL v2");
 723
 724 static int __init omap2430_init(void)
 725 {
 726         return platform_driver_register(&omap2430_driver);
 727 }
 728 subsys_initcall(omap2430_init);
 729
 730 static void __exit omap2430_exit(void)
 731 {
 732         platform_driver_unregister(&omap2430_driver);
 733 }
 734 module_exit(omap2430_exit);