drivers/usb/musb/musb_dsps.c

   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 #include <linux/init.h>
  33 #include <linux/io.h>
  34 #include <linux/err.h>
  35 #include <linux/platform_device.h>
  36 #include <linux/dma-mapping.h>
  37 #include <linux/pm_runtime.h>
  38 #include <linux/module.h>
  39 #include <linux/usb/usb_phy_gen_xceiv.h>
  40 #include <linux/platform_data/usb-omap.h>
  41 #include <linux/sizes.h>
  42
  43 #include <linux/of.h>
  44 #include <linux/of_device.h>
  45 #include <linux/of_address.h>
  46 #include <linux/of_irq.h>
  47 #include <linux/usb/of.h>
  48
  49 #include "musb_core.h"
  50
  51 static const struct of_device_id musb_dsps_of_match[];
  52
  53 /**
  54  * avoid using musb_readx()/musb_writex() as glue layer should not be
  55  * dependent on musb core layer symbols.
  56  */
  57 static inline u8 dsps_readb(const void __iomem *addr, unsigned offset)
  58         { return __raw_readb(addr + offset); }
  59
  60 static inline u32 dsps_readl(const void __iomem *addr, unsigned offset)
  61         { return __raw_readl(addr + offset); }
  62
  63 static inline void dsps_writeb(void __iomem *addr, unsigned offset, u8 data)
  64         { __raw_writeb(data, addr + offset); }
  65
  66 static inline void dsps_writel(void __iomem *addr, unsigned offset, u32 data)
  67         { __raw_writel(data, addr + offset); }
  68
  69 /**
  70  * DSPS musb wrapper register offset.
  71  * FIXME: This should be expanded to have all the wrapper registers from TI DSPS
  72  * musb ips.
  73  */
  74 struct dsps_musb_wrapper {
  75         u16     revision;
  76         u16     control;
  77         u16     status;
  78         u16     epintr_set;
  79         u16     epintr_clear;
  80         u16     epintr_status;
  81         u16     coreintr_set;
  82         u16     coreintr_clear;
  83         u16     coreintr_status;
  84         u16     phy_utmi;
  85         u16     mode;
  86
  87         /* bit positions for control */
  88         unsigned        reset:5;
  89
  90         /* bit positions for interrupt */
  91         unsigned        usb_shift:5;
  92         u32             usb_mask;
  93         u32             usb_bitmap;
  94         unsigned        drvvbus:5;
  95
  96         unsigned        txep_shift:5;
  97         u32             txep_mask;
  98         u32             txep_bitmap;
  99
 100         unsigned        rxep_shift:5;
 101         u32             rxep_mask;
 102         u32             rxep_bitmap;
 103
 104         /* bit positions for phy_utmi */
 105         unsigned        otg_disable:5;
 106
 107         /* bit positions for mode */
 108         unsigned        iddig:5;
 109         /* miscellaneous stuff */
 110         u8              poll_seconds;
 111 };
 112
 113 /**
 114  * DSPS glue structure.
 115  */
 116 struct dsps_glue {
 117         struct device *dev;
 118         struct platform_device *musb;   /* child musb pdev */
 119         const struct dsps_musb_wrapper *wrp; /* wrapper register offsets */
 120         struct timer_list timer;        /* otg_workaround timer */
 121         unsigned long last_timer;    /* last timer data for each instance */
 122 };
 123
 124 static void dsps_musb_try_idle(struct musb *musb, unsigned long timeout)
 125 {
 126         struct device *dev = musb->controller;
 127         struct dsps_glue *glue = dev_get_drvdata(dev->parent);
 128
 129         if (timeout == 0)
 130                 timeout = jiffies + msecs_to_jiffies(3);
 131
 132         /* Never idle if active, or when VBUS timeout is not set as host */
 133         if (musb->is_active || (musb->a_wait_bcon == 0 &&
 134                                 musb->xceiv->state == OTG_STATE_A_WAIT_BCON)) {
 135                 dev_dbg(musb->controller, "%s active, deleting timer\n",
 136                                 usb_otg_state_string(musb->xceiv->state));
 137                 del_timer(&glue->timer);
 138                 glue->last_timer = jiffies;
 139                 return;
 140         }
 141         if (musb->port_mode != MUSB_PORT_MODE_DUAL_ROLE)
 142                 return;
 143
 144         if (!musb->g.dev.driver)
 145                 return;
 146
 147         if (time_after(glue->last_timer, timeout) &&
 148                                 timer_pending(&glue->timer)) {
 149                 dev_dbg(musb->controller,
 150                         "Longer idle timer already pending, ignoring...\n");
 151                 return;
 152         }
 153         glue->last_timer = timeout;
 154
 155         dev_dbg(musb->controller, "%s inactive, starting idle timer for %u ms\n",
 156                 usb_otg_state_string(musb->xceiv->state),
 157                         jiffies_to_msecs(timeout - jiffies));
 158         mod_timer(&glue->timer, timeout);
 159 }
 160
 161 /**
 162  * dsps_musb_enable - enable interrupts
 163  */
 164 static void dsps_musb_enable(struct musb *musb)
 165 {
 166         struct device *dev = musb->controller;
 167         struct platform_device *pdev = to_platform_device(dev->parent);
 168         struct dsps_glue *glue = platform_get_drvdata(pdev);
 169         const struct dsps_musb_wrapper *wrp = glue->wrp;
 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         dsps_writel(reg_base, wrp->coreintr_set,
 182                     (1 << wrp->drvvbus) << wrp->usb_shift);
 183         dsps_musb_try_idle(musb, 0);
 184 }
 185
 186 /**
 187  * dsps_musb_disable - disable HDRC and flush interrupts
 188  */
 189 static void dsps_musb_disable(struct musb *musb)
 190 {
 191         struct device *dev = musb->controller;
 192         struct platform_device *pdev = to_platform_device(dev->parent);
 193         struct dsps_glue *glue = platform_get_drvdata(pdev);
 194         const struct dsps_musb_wrapper *wrp = glue->wrp;
 195         void __iomem *reg_base = musb->ctrl_base;
 196
 197         dsps_writel(reg_base, wrp->coreintr_clear, wrp->usb_bitmap);
 198         dsps_writel(reg_base, wrp->epintr_clear,
 199                          wrp->txep_bitmap | wrp->rxep_bitmap);
 200         dsps_writeb(musb->mregs, MUSB_DEVCTL, 0);
 201 }
 202
 203 static void otg_timer(unsigned long _musb)
 204 {
 205         struct musb *musb = (void *)_musb;
 206         void __iomem *mregs = musb->mregs;
 207         struct device *dev = musb->controller;
 208         struct dsps_glue *glue = dev_get_drvdata(dev->parent);
 209         const struct dsps_musb_wrapper *wrp = glue->wrp;
 210         u8 devctl;
 211         unsigned long flags;
 212         int skip_session = 0;
 213
 214         /*
 215          * We poll because DSPS IP's won't expose several OTG-critical
 216          * status change events (from the transceiver) otherwise.
 217          */
 218         devctl = dsps_readb(mregs, MUSB_DEVCTL);
 219         dev_dbg(musb->controller, "Poll devctl %02x (%s)\n", devctl,
 220                                 usb_otg_state_string(musb->xceiv->state));
 221
 222         spin_lock_irqsave(&musb->lock, flags);
 223         switch (musb->xceiv->state) {
 224         case OTG_STATE_A_WAIT_BCON:
 225                 dsps_writeb(musb->mregs, MUSB_DEVCTL, 0);
 226                 skip_session = 1;
 227                 /* fall */
 228
 229         case OTG_STATE_A_IDLE:
 230         case OTG_STATE_B_IDLE:
 231                 if (devctl & MUSB_DEVCTL_BDEVICE) {
 232                         musb->xceiv->state = OTG_STATE_B_IDLE;
 233                         MUSB_DEV_MODE(musb);
 234                 } else {
 235                         musb->xceiv->state = OTG_STATE_A_IDLE;
 236                         MUSB_HST_MODE(musb);
 237                 }
 238                 if (!(devctl & MUSB_DEVCTL_SESSION) && !skip_session)
 239                         dsps_writeb(mregs, MUSB_DEVCTL, MUSB_DEVCTL_SESSION);
 240                 mod_timer(&glue->timer, jiffies + wrp->poll_seconds * HZ);
 241                 break;
 242         case OTG_STATE_A_WAIT_VFALL:
 243                 musb->xceiv->state = OTG_STATE_A_WAIT_VRISE;
 244                 dsps_writel(musb->ctrl_base, wrp->coreintr_set,
 245                             MUSB_INTR_VBUSERROR << wrp->usb_shift);
 246                 break;
 247         default:
 248                 break;
 249         }
 250         spin_unlock_irqrestore(&musb->lock, flags);
 251 }
 252
 253 static irqreturn_t dsps_interrupt(int irq, void *hci)
 254 {
 255         struct musb  *musb = hci;
 256         void __iomem *reg_base = musb->ctrl_base;
 257         struct device *dev = musb->controller;
 258         struct dsps_glue *glue = dev_get_drvdata(dev->parent);
 259         const struct dsps_musb_wrapper *wrp = glue->wrp;
 260         unsigned long flags;
 261         irqreturn_t ret = IRQ_NONE;
 262         u32 epintr, usbintr;
 263
 264         spin_lock_irqsave(&musb->lock, flags);
 265
 266         /* Get endpoint interrupts */
 267         epintr = dsps_readl(reg_base, wrp->epintr_status);
 268         musb->int_rx = (epintr & wrp->rxep_bitmap) >> wrp->rxep_shift;
 269         musb->int_tx = (epintr & wrp->txep_bitmap) >> wrp->txep_shift;
 270
 271         if (epintr)
 272                 dsps_writel(reg_base, wrp->epintr_status, epintr);
 273
 274         /* Get usb core interrupts */
 275         usbintr = dsps_readl(reg_base, wrp->coreintr_status);
 276         if (!usbintr && !epintr)
 277                 goto out;
 278
 279         musb->int_usb = (usbintr & wrp->usb_bitmap) >> wrp->usb_shift;
 280         if (usbintr)
 281                 dsps_writel(reg_base, wrp->coreintr_status, usbintr);
 282
 283         dev_dbg(musb->controller, "usbintr (%x) epintr(%x)\n",
 284                         usbintr, epintr);
 285         /*
 286          * DRVVBUS IRQs are the only proxy we have (a very poor one!) for
 287          * DSPS IP's missing ID change IRQ.  We need an ID change IRQ to
 288          * switch appropriately between halves of the OTG state machine.
 289          * Managing DEVCTL.SESSION per Mentor docs requires that we know its
 290          * value but DEVCTL.BDEVICE is invalid without DEVCTL.SESSION set.
 291          * Also, DRVVBUS pulses for SRP (but not at 5V) ...
 292          */
 293         if (is_host_active(musb) && usbintr & MUSB_INTR_BABBLE)
 294                 pr_info("CAUTION: musb: Babble Interrupt Occurred\n");
 295
 296         if (usbintr & ((1 << wrp->drvvbus) << wrp->usb_shift)) {
 297                 int drvvbus = dsps_readl(reg_base, wrp->status);
 298                 void __iomem *mregs = musb->mregs;
 299                 u8 devctl = dsps_readb(mregs, MUSB_DEVCTL);
 300                 int err;
 301
 302                 err = musb->int_usb & MUSB_INTR_VBUSERROR;
 303                 if (err) {
 304                         /*
 305                          * The Mentor core doesn't debounce VBUS as needed
 306                          * to cope with device connect current spikes. This
 307                          * means it's not uncommon for bus-powered devices
 308                          * to get VBUS errors during enumeration.
 309                          *
 310                          * This is a workaround, but newer RTL from Mentor
 311                          * seems to allow a better one: "re"-starting sessions
 312                          * without waiting for VBUS to stop registering in
 313                          * devctl.
 314                          */
 315                         musb->int_usb &= ~MUSB_INTR_VBUSERROR;
 316                         musb->xceiv->state = OTG_STATE_A_WAIT_VFALL;
 317                         mod_timer(&glue->timer,
 318                                         jiffies + wrp->poll_seconds * HZ);
 319                         WARNING("VBUS error workaround (delay coming)\n");
 320                 } else if (drvvbus) {
 321                         MUSB_HST_MODE(musb);
 322                         musb->xceiv->otg->default_a = 1;
 323                         musb->xceiv->state = OTG_STATE_A_WAIT_VRISE;
 324                         del_timer(&glue->timer);
 325                 } else {
 326                         musb->is_active = 0;
 327                         MUSB_DEV_MODE(musb);
 328                         musb->xceiv->otg->default_a = 0;
 329                         musb->xceiv->state = OTG_STATE_B_IDLE;
 330                 }
 331
 332                 /* NOTE: this must complete power-on within 100 ms. */
 333                 dev_dbg(musb->controller, "VBUS %s (%s)%s, devctl %02x\n",
 334                                 drvvbus ? "on" : "off",
 335                                 usb_otg_state_string(musb->xceiv->state),
 336                                 err ? " ERROR" : "",
 337                                 devctl);
 338                 ret = IRQ_HANDLED;
 339         }
 340
 341         if (musb->int_tx || musb->int_rx || musb->int_usb)
 342                 ret |= musb_interrupt(musb);
 343
 344         /* Poll for ID change */
 345         if (musb->xceiv->state == OTG_STATE_B_IDLE)
 346                 mod_timer(&glue->timer, jiffies + wrp->poll_seconds * HZ);
 347 out:
 348         spin_unlock_irqrestore(&musb->lock, flags);
 349
 350         return ret;
 351 }
 352
 353 static int dsps_musb_init(struct musb *musb)
 354 {
 355         struct device *dev = musb->controller;
 356         struct dsps_glue *glue = dev_get_drvdata(dev->parent);
 357         struct platform_device *parent = to_platform_device(dev->parent);
 358         const struct dsps_musb_wrapper *wrp = glue->wrp;
 359         void __iomem *reg_base;
 360         struct resource *r;
 361         u32 rev, val;
 362
 363         r = platform_get_resource_byname(parent, IORESOURCE_MEM, "control");
 364         if (!r)
 365                 return -EINVAL;
 366
 367         reg_base = devm_ioremap_resource(dev, r);
 368         if (IS_ERR(reg_base))
 369                 return PTR_ERR(reg_base);
 370         musb->ctrl_base = reg_base;
 371
 372         /* NOP driver needs change if supporting dual instance */
 373         musb->xceiv = devm_usb_get_phy_by_phandle(dev, "phys", 0);
 374         if (IS_ERR(musb->xceiv))
 375                 return PTR_ERR(musb->xceiv);
 376
 377         /* Returns zero if e.g. not clocked */
 378         rev = dsps_readl(reg_base, wrp->revision);
 379         if (!rev)
 380                 return -ENODEV;
 381
 382         usb_phy_init(musb->xceiv);
 383         setup_timer(&glue->timer, otg_timer, (unsigned long) musb);
 384
 385         /* Reset the musb */
 386         dsps_writel(reg_base, wrp->control, (1 << wrp->reset));
 387
 388         musb->isr = dsps_interrupt;
 389
 390         /* reset the otgdisable bit, needed for host mode to work */
 391         val = dsps_readl(reg_base, wrp->phy_utmi);
 392         val &= ~(1 << wrp->otg_disable);
 393         dsps_writel(musb->ctrl_base, wrp->phy_utmi, val);
 394
 395         return 0;
 396 }
 397
 398 static int dsps_musb_exit(struct musb *musb)
 399 {
 400         struct device *dev = musb->controller;
 401         struct dsps_glue *glue = dev_get_drvdata(dev->parent);
 402
 403         del_timer_sync(&glue->timer);
 404
 405         usb_phy_shutdown(musb->xceiv);
 406         return 0;
 407 }
 408
 409 static struct musb_platform_ops dsps_ops = {
 410         .init           = dsps_musb_init,
 411         .exit           = dsps_musb_exit,
 412
 413         .enable         = dsps_musb_enable,
 414         .disable        = dsps_musb_disable,
 415
 416         .try_idle       = dsps_musb_try_idle,
 417 };
 418
 419 static u64 musb_dmamask = DMA_BIT_MASK(32);
 420
 421 static int get_int_prop(struct device_node *dn, const char *s)
 422 {
 423         int ret;
 424         u32 val;
 425
 426         ret = of_property_read_u32(dn, s, &val);
 427         if (ret)
 428                 return 0;
 429         return val;
 430 }
 431
 432 static int get_musb_port_mode(struct device *dev)
 433 {
 434         enum usb_dr_mode mode;
 435
 436         mode = of_usb_get_dr_mode(dev->of_node);
 437         switch (mode) {
 438         case USB_DR_MODE_HOST:
 439                 return MUSB_PORT_MODE_HOST;
 440
 441         case USB_DR_MODE_PERIPHERAL:
 442                 return MUSB_PORT_MODE_GADGET;
 443
 444         case USB_DR_MODE_UNKNOWN:
 445         case USB_DR_MODE_OTG:
 446         default:
 447                 return MUSB_PORT_MODE_DUAL_ROLE;
 448         }
 449 }
 450
 451 static int dsps_create_musb_pdev(struct dsps_glue *glue,
 452                 struct platform_device *parent)
 453 {
 454         struct musb_hdrc_platform_data pdata;
 455         struct resource resources[2];
 456         struct resource *res;
 457         struct device *dev = &parent->dev;
 458         struct musb_hdrc_config *config;
 459         struct platform_device *musb;
 460         struct device_node *dn = parent->dev.of_node;
 461         int ret;
 462
 463         memset(resources, 0, sizeof(resources));
 464         res = platform_get_resource_byname(parent, IORESOURCE_MEM, "mc");
 465         if (!res) {
 466                 dev_err(dev, "failed to get memory.\n");
 467                 return -EINVAL;
 468         }
 469         resources[0] = *res;
 470
 471         res = platform_get_resource_byname(parent, IORESOURCE_IRQ, "mc");
 472         if (!res) {
 473                 dev_err(dev, "failed to get irq.\n");
 474                 return -EINVAL;
 475         }
 476         resources[1] = *res;
 477
 478         /* allocate the child platform device */
 479         musb = platform_device_alloc("musb-hdrc", PLATFORM_DEVID_AUTO);
 480         if (!musb) {
 481                 dev_err(dev, "failed to allocate musb device\n");
 482                 return -ENOMEM;
 483         }
 484
 485         musb->dev.parent                = dev;
 486         musb->dev.dma_mask              = &musb_dmamask;
 487         musb->dev.coherent_dma_mask     = musb_dmamask;
 488         musb->dev.of_node               = of_node_get(dn);
 489
 490         glue->musb = musb;
 491
 492         ret = platform_device_add_resources(musb, resources,
 493                         ARRAY_SIZE(resources));
 494         if (ret) {
 495                 dev_err(dev, "failed to add resources\n");
 496                 goto err;
 497         }
 498
 499         config = devm_kzalloc(&parent->dev, sizeof(*config), GFP_KERNEL);
 500         if (!config) {
 501                 dev_err(dev, "failed to allocate musb hdrc config\n");
 502                 ret = -ENOMEM;
 503                 goto err;
 504         }
 505         pdata.config = config;
 506         pdata.platform_ops = &dsps_ops;
 507
 508         config->num_eps = get_int_prop(dn, "mentor,num-eps");
 509         config->ram_bits = get_int_prop(dn, "mentor,ram-bits");
 510         pdata.mode = get_musb_port_mode(dev);
 511         /* DT keeps this entry in mA, musb expects it as per USB spec */
 512         pdata.power = get_int_prop(dn, "mentor,power") / 2;
 513         config->multipoint = of_property_read_bool(dn, "mentor,multipoint");
 514
 515         ret = platform_device_add_data(musb, &pdata, sizeof(pdata));
 516         if (ret) {
 517                 dev_err(dev, "failed to add platform_data\n");
 518                 goto err;
 519         }
 520
 521         ret = platform_device_add(musb);
 522         if (ret) {
 523                 dev_err(dev, "failed to register musb device\n");
 524                 goto err;
 525         }
 526         return 0;
 527
 528 err:
 529         platform_device_put(musb);
 530         return ret;
 531 }
 532
 533 static int dsps_probe(struct platform_device *pdev)
 534 {
 535         const struct of_device_id *match;
 536         const struct dsps_musb_wrapper *wrp;
 537         struct dsps_glue *glue;
 538         int ret;
 539
 540         if (!strcmp(pdev->name, "musb-hdrc"))
 541                 return -ENODEV;
 542
 543         match = of_match_node(musb_dsps_of_match, pdev->dev.of_node);
 544         if (!match) {
 545                 dev_err(&pdev->dev, "fail to get matching of_match struct\n");
 546                 return -EINVAL;
 547         }
 548         wrp = match->data;
 549
 550         /* allocate glue */
 551         glue = kzalloc(sizeof(*glue), GFP_KERNEL);
 552         if (!glue) {
 553                 dev_err(&pdev->dev, "unable to allocate glue memory\n");
 554                 return -ENOMEM;
 555         }
 556
 557         glue->dev = &pdev->dev;
 558         glue->wrp = wrp;
 559
 560         platform_set_drvdata(pdev, glue);
 561         pm_runtime_enable(&pdev->dev);
 562
 563         ret = pm_runtime_get_sync(&pdev->dev);
 564         if (ret < 0) {
 565                 dev_err(&pdev->dev, "pm_runtime_get_sync FAILED");
 566                 goto err2;
 567         }
 568
 569         ret = dsps_create_musb_pdev(glue, pdev);
 570         if (ret)
 571                 goto err3;
 572
 573         return 0;
 574
 575 err3:
 576         pm_runtime_put(&pdev->dev);
 577 err2:
 578         pm_runtime_disable(&pdev->dev);
 579         kfree(glue);
 580         return ret;
 581 }
 582
 583 static int dsps_remove(struct platform_device *pdev)
 584 {
 585         struct dsps_glue *glue = platform_get_drvdata(pdev);
 586
 587         platform_device_unregister(glue->musb);
 588
 589         /* disable usbss clocks */
 590         pm_runtime_put(&pdev->dev);
 591         pm_runtime_disable(&pdev->dev);
 592         kfree(glue);
 593         return 0;
 594 }
 595
 596 static const struct dsps_musb_wrapper am33xx_driver_data = {
 597         .revision               = 0x00,
 598         .control                = 0x14,
 599         .status                 = 0x18,
 600         .epintr_set             = 0x38,
 601         .epintr_clear           = 0x40,
 602         .epintr_status          = 0x30,
 603         .coreintr_set           = 0x3c,
 604         .coreintr_clear         = 0x44,
 605         .coreintr_status        = 0x34,
 606         .phy_utmi               = 0xe0,
 607         .mode                   = 0xe8,
 608         .reset                  = 0,
 609         .otg_disable            = 21,
 610         .iddig                  = 8,
 611         .usb_shift              = 0,
 612         .usb_mask               = 0x1ff,
 613         .usb_bitmap             = (0x1ff << 0),
 614         .drvvbus                = 8,
 615         .txep_shift             = 0,
 616         .txep_mask              = 0xffff,
 617         .txep_bitmap            = (0xffff << 0),
 618         .rxep_shift             = 16,
 619         .rxep_mask              = 0xfffe,
 620         .rxep_bitmap            = (0xfffe << 16),
 621         .poll_seconds           = 2,
 622 };
 623
 624 static const struct of_device_id musb_dsps_of_match[] = {
 625         { .compatible = "ti,musb-am33xx",
 626                 .data = (void *) &am33xx_driver_data, },
 627         {  },
 628 };
 629 MODULE_DEVICE_TABLE(of, musb_dsps_of_match);
 630
 631 static struct platform_driver dsps_usbss_driver = {
 632         .probe          = dsps_probe,
 633         .remove         = dsps_remove,
 634         .driver         = {
 635                 .name   = "musb-dsps",
 636                 .of_match_table = musb_dsps_of_match,
 637         },
 638 };
 639
 640 MODULE_DESCRIPTION("TI DSPS MUSB Glue Layer");
 641 MODULE_AUTHOR("Ravi B <ravibabu@ti.com>");
 642 MODULE_AUTHOR("Ajay Kumar Gupta <ajay.gupta@ti.com>");
 643 MODULE_LICENSE("GPL v2");
 644
 645 module_platform_driver(dsps_usbss_driver);