musb_dsps.c revision ded017ee6c7b90f7356bd8488f8af1c10ba90490
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 40#include <linux/of.h> 41#include <linux/of_device.h> 42#include <linux/of_address.h> 43 44#include <plat/usb.h> 45 46#include "musb_core.h" 47 48/** 49 * avoid using musb_readx()/musb_writex() as glue layer should not be 50 * dependent on musb core layer symbols. 51 */ 52static inline u8 dsps_readb(const void __iomem *addr, unsigned offset) 53 { return __raw_readb(addr + offset); } 54 55static inline u32 dsps_readl(const void __iomem *addr, unsigned offset) 56 { return __raw_readl(addr + offset); } 57 58static inline void dsps_writeb(void __iomem *addr, unsigned offset, u8 data) 59 { __raw_writeb(data, addr + offset); } 60 61static inline void dsps_writel(void __iomem *addr, unsigned offset, u32 data) 62 { __raw_writel(data, addr + offset); } 63 64/** 65 * DSPS musb wrapper register offset. 66 * FIXME: This should be expanded to have all the wrapper registers from TI DSPS 67 * musb ips. 68 */ 69struct dsps_musb_wrapper { 70 u16 revision; 71 u16 control; 72 u16 status; 73 u16 eoi; 74 u16 epintr_set; 75 u16 epintr_clear; 76 u16 epintr_status; 77 u16 coreintr_set; 78 u16 coreintr_clear; 79 u16 coreintr_status; 80 u16 phy_utmi; 81 u16 mode; 82 83 /* bit positions for control */ 84 unsigned reset:5; 85 86 /* bit positions for interrupt */ 87 unsigned usb_shift:5; 88 u32 usb_mask; 89 u32 usb_bitmap; 90 unsigned drvvbus:5; 91 92 unsigned txep_shift:5; 93 u32 txep_mask; 94 u32 txep_bitmap; 95 96 unsigned rxep_shift:5; 97 u32 rxep_mask; 98 u32 rxep_bitmap; 99 100 /* bit positions for phy_utmi */ 101 unsigned otg_disable:5; 102 103 /* bit positions for mode */ 104 unsigned iddig:5; 105 /* miscellaneous stuff */ 106 u32 musb_core_offset; 107 u8 poll_seconds; 108}; 109 110/** 111 * DSPS glue structure. 112 */ 113struct dsps_glue { 114 struct device *dev; 115 struct platform_device *musb; /* child musb pdev */ 116 const struct dsps_musb_wrapper *wrp; /* wrapper register offsets */ 117 struct timer_list timer; /* otg_workaround timer */ 118}; 119 120/** 121 * dsps_musb_enable - enable interrupts 122 */ 123static void dsps_musb_enable(struct musb *musb) 124{ 125 struct device *dev = musb->controller; 126 struct platform_device *pdev = to_platform_device(dev->parent); 127 struct dsps_glue *glue = platform_get_drvdata(pdev); 128 const struct dsps_musb_wrapper *wrp = glue->wrp; 129 void __iomem *reg_base = musb->ctrl_base; 130 u32 epmask, coremask; 131 132 /* Workaround: setup IRQs through both register sets. */ 133 epmask = ((musb->epmask & wrp->txep_mask) << wrp->txep_shift) | 134 ((musb->epmask & wrp->rxep_mask) << wrp->rxep_shift); 135 coremask = (wrp->usb_bitmap & ~MUSB_INTR_SOF); 136 137 dsps_writel(reg_base, wrp->epintr_set, epmask); 138 dsps_writel(reg_base, wrp->coreintr_set, coremask); 139 /* Force the DRVVBUS IRQ so we can start polling for ID change. */ 140 if (is_otg_enabled(musb)) 141 dsps_writel(reg_base, wrp->coreintr_set, 142 (1 << wrp->drvvbus) << wrp->usb_shift); 143} 144 145/** 146 * dsps_musb_disable - disable HDRC and flush interrupts 147 */ 148static void dsps_musb_disable(struct musb *musb) 149{ 150 struct device *dev = musb->controller; 151 struct platform_device *pdev = to_platform_device(dev->parent); 152 struct dsps_glue *glue = platform_get_drvdata(pdev); 153 const struct dsps_musb_wrapper *wrp = glue->wrp; 154 void __iomem *reg_base = musb->ctrl_base; 155 156 dsps_writel(reg_base, wrp->coreintr_clear, wrp->usb_bitmap); 157 dsps_writel(reg_base, wrp->epintr_clear, 158 wrp->txep_bitmap | wrp->rxep_bitmap); 159 dsps_writeb(musb->mregs, MUSB_DEVCTL, 0); 160 dsps_writel(reg_base, wrp->eoi, 0); 161} 162 163static void otg_timer(unsigned long _musb) 164{ 165 struct musb *musb = (void *)_musb; 166 void __iomem *mregs = musb->mregs; 167 struct device *dev = musb->controller; 168 struct platform_device *pdev = to_platform_device(dev->parent); 169 struct dsps_glue *glue = platform_get_drvdata(pdev); 170 const struct dsps_musb_wrapper *wrp = glue->wrp; 171 u8 devctl; 172 unsigned long flags; 173 174 /* 175 * We poll because DSPS IP's won't expose several OTG-critical 176 * status change events (from the transceiver) otherwise. 177 */ 178 devctl = dsps_readb(mregs, MUSB_DEVCTL); 179 dev_dbg(musb->controller, "Poll devctl %02x (%s)\n", devctl, 180 otg_state_string(musb->xceiv->state)); 181 182 spin_lock_irqsave(&musb->lock, flags); 183 switch (musb->xceiv->state) { 184 case OTG_STATE_A_WAIT_BCON: 185 devctl &= ~MUSB_DEVCTL_SESSION; 186 dsps_writeb(musb->mregs, MUSB_DEVCTL, devctl); 187 188 devctl = dsps_readb(musb->mregs, MUSB_DEVCTL); 189 if (devctl & MUSB_DEVCTL_BDEVICE) { 190 musb->xceiv->state = OTG_STATE_B_IDLE; 191 MUSB_DEV_MODE(musb); 192 } else { 193 musb->xceiv->state = OTG_STATE_A_IDLE; 194 MUSB_HST_MODE(musb); 195 } 196 break; 197 case OTG_STATE_A_WAIT_VFALL: 198 musb->xceiv->state = OTG_STATE_A_WAIT_VRISE; 199 dsps_writel(musb->ctrl_base, wrp->coreintr_set, 200 MUSB_INTR_VBUSERROR << wrp->usb_shift); 201 break; 202 case OTG_STATE_B_IDLE: 203 if (!is_peripheral_enabled(musb)) 204 break; 205 206 devctl = dsps_readb(mregs, MUSB_DEVCTL); 207 if (devctl & MUSB_DEVCTL_BDEVICE) 208 mod_timer(&glue->timer, 209 jiffies + wrp->poll_seconds * HZ); 210 else 211 musb->xceiv->state = OTG_STATE_A_IDLE; 212 break; 213 default: 214 break; 215 } 216 spin_unlock_irqrestore(&musb->lock, flags); 217} 218 219static void dsps_musb_try_idle(struct musb *musb, unsigned long timeout) 220{ 221 struct device *dev = musb->controller; 222 struct platform_device *pdev = to_platform_device(dev->parent); 223 struct dsps_glue *glue = platform_get_drvdata(pdev); 224 static unsigned long last_timer; 225 226 if (!is_otg_enabled(musb)) 227 return; 228 229 if (timeout == 0) 230 timeout = jiffies + msecs_to_jiffies(3); 231 232 /* Never idle if active, or when VBUS timeout is not set as host */ 233 if (musb->is_active || (musb->a_wait_bcon == 0 && 234 musb->xceiv->state == OTG_STATE_A_WAIT_BCON)) { 235 dev_dbg(musb->controller, "%s active, deleting timer\n", 236 otg_state_string(musb->xceiv->state)); 237 del_timer(&glue->timer); 238 last_timer = jiffies; 239 return; 240 } 241 242 if (time_after(last_timer, timeout) && timer_pending(&glue->timer)) { 243 dev_dbg(musb->controller, 244 "Longer idle timer already pending, ignoring...\n"); 245 return; 246 } 247 last_timer = timeout; 248 249 dev_dbg(musb->controller, "%s inactive, starting idle timer for %u ms\n", 250 otg_state_string(musb->xceiv->state), 251 jiffies_to_msecs(timeout - jiffies)); 252 mod_timer(&glue->timer, timeout); 253} 254 255static irqreturn_t dsps_interrupt(int irq, void *hci) 256{ 257 struct musb *musb = hci; 258 void __iomem *reg_base = musb->ctrl_base; 259 struct device *dev = musb->controller; 260 struct platform_device *pdev = to_platform_device(dev->parent); 261 struct dsps_glue *glue = platform_get_drvdata(pdev); 262 const struct dsps_musb_wrapper *wrp = glue->wrp; 263 unsigned long flags; 264 irqreturn_t ret = IRQ_NONE; 265 u32 epintr, usbintr; 266 267 spin_lock_irqsave(&musb->lock, flags); 268 269 /* Get endpoint interrupts */ 270 epintr = dsps_readl(reg_base, wrp->epintr_status); 271 musb->int_rx = (epintr & wrp->rxep_bitmap) >> wrp->rxep_shift; 272 musb->int_tx = (epintr & wrp->txep_bitmap) >> wrp->txep_shift; 273 274 if (epintr) 275 dsps_writel(reg_base, wrp->epintr_status, epintr); 276 277 /* Get usb core interrupts */ 278 usbintr = dsps_readl(reg_base, wrp->coreintr_status); 279 if (!usbintr && !epintr) 280 goto eoi; 281 282 musb->int_usb = (usbintr & wrp->usb_bitmap) >> wrp->usb_shift; 283 if (usbintr) 284 dsps_writel(reg_base, wrp->coreintr_status, usbintr); 285 286 dev_dbg(musb->controller, "usbintr (%x) epintr(%x)\n", 287 usbintr, epintr); 288 /* 289 * DRVVBUS IRQs are the only proxy we have (a very poor one!) for 290 * DSPS IP's missing ID change IRQ. We need an ID change IRQ to 291 * switch appropriately between halves of the OTG state machine. 292 * Managing DEVCTL.SESSION per Mentor docs requires that we know its 293 * value but DEVCTL.BDEVICE is invalid without DEVCTL.SESSION set. 294 * Also, DRVVBUS pulses for SRP (but not at 5V) ... 295 */ 296 if ((usbintr & MUSB_INTR_BABBLE) && is_host_enabled(musb)) 297 pr_info("CAUTION: musb: Babble Interrupt Occured\n"); 298 299 if (usbintr & ((1 << wrp->drvvbus) << wrp->usb_shift)) { 300 int drvvbus = dsps_readl(reg_base, wrp->status); 301 void __iomem *mregs = musb->mregs; 302 u8 devctl = dsps_readb(mregs, MUSB_DEVCTL); 303 int err; 304 305 err = is_host_enabled(musb) && (musb->int_usb & 306 MUSB_INTR_VBUSERROR); 307 if (err) { 308 /* 309 * The Mentor core doesn't debounce VBUS as needed 310 * to cope with device connect current spikes. This 311 * means it's not uncommon for bus-powered devices 312 * to get VBUS errors during enumeration. 313 * 314 * This is a workaround, but newer RTL from Mentor 315 * seems to allow a better one: "re"-starting sessions 316 * without waiting for VBUS to stop registering in 317 * devctl. 318 */ 319 musb->int_usb &= ~MUSB_INTR_VBUSERROR; 320 musb->xceiv->state = OTG_STATE_A_WAIT_VFALL; 321 mod_timer(&glue->timer, 322 jiffies + wrp->poll_seconds * HZ); 323 WARNING("VBUS error workaround (delay coming)\n"); 324 } else if (is_host_enabled(musb) && drvvbus) { 325 musb->is_active = 1; 326 MUSB_HST_MODE(musb); 327 musb->xceiv->otg->default_a = 1; 328 musb->xceiv->state = OTG_STATE_A_WAIT_VRISE; 329 del_timer(&glue->timer); 330 } else { 331 musb->is_active = 0; 332 MUSB_DEV_MODE(musb); 333 musb->xceiv->otg->default_a = 0; 334 musb->xceiv->state = OTG_STATE_B_IDLE; 335 } 336 337 /* NOTE: this must complete power-on within 100 ms. */ 338 dev_dbg(musb->controller, "VBUS %s (%s)%s, devctl %02x\n", 339 drvvbus ? "on" : "off", 340 otg_state_string(musb->xceiv->state), 341 err ? " ERROR" : "", 342 devctl); 343 ret = IRQ_HANDLED; 344 } 345 346 if (musb->int_tx || musb->int_rx || musb->int_usb) 347 ret |= musb_interrupt(musb); 348 349 eoi: 350 /* EOI needs to be written for the IRQ to be re-asserted. */ 351 if (ret == IRQ_HANDLED || epintr || usbintr) 352 dsps_writel(reg_base, wrp->eoi, 1); 353 354 /* Poll for ID change */ 355 if (is_otg_enabled(musb) && musb->xceiv->state == OTG_STATE_B_IDLE) 356 mod_timer(&glue->timer, jiffies + wrp->poll_seconds * HZ); 357 358 spin_unlock_irqrestore(&musb->lock, flags); 359 360 return ret; 361} 362 363static int dsps_musb_init(struct musb *musb) 364{ 365 struct device *dev = musb->controller; 366 struct musb_hdrc_platform_data *plat = dev->platform_data; 367 struct platform_device *pdev = to_platform_device(dev->parent); 368 struct dsps_glue *glue = platform_get_drvdata(pdev); 369 const struct dsps_musb_wrapper *wrp = glue->wrp; 370 struct omap_musb_board_data *data = plat->board_data; 371 void __iomem *reg_base = musb->ctrl_base; 372 u32 rev, val; 373 int status; 374 375 /* mentor core register starts at offset of 0x400 from musb base */ 376 musb->mregs += wrp->musb_core_offset; 377 378 /* NOP driver needs change if supporting dual instance */ 379 usb_nop_xceiv_register(); 380 musb->xceiv = usb_get_phy(USB_PHY_TYPE_USB2); 381 if (IS_ERR_OR_NULL(musb->xceiv)) 382 return -ENODEV; 383 384 /* Returns zero if e.g. not clocked */ 385 rev = dsps_readl(reg_base, wrp->revision); 386 if (!rev) { 387 status = -ENODEV; 388 goto err0; 389 } 390 391 if (is_host_enabled(musb)) 392 setup_timer(&glue->timer, otg_timer, (unsigned long) musb); 393 394 /* Reset the musb */ 395 dsps_writel(reg_base, wrp->control, (1 << wrp->reset)); 396 397 /* Start the on-chip PHY and its PLL. */ 398 if (data->set_phy_power) 399 data->set_phy_power(1); 400 401 musb->isr = dsps_interrupt; 402 403 /* reset the otgdisable bit, needed for host mode to work */ 404 val = dsps_readl(reg_base, wrp->phy_utmi); 405 val &= ~(1 << wrp->otg_disable); 406 dsps_writel(musb->ctrl_base, wrp->phy_utmi, val); 407 408 /* clear level interrupt */ 409 dsps_writel(reg_base, wrp->eoi, 0); 410 411 return 0; 412err0: 413 usb_put_phy(musb->xceiv); 414 usb_nop_xceiv_unregister(); 415 return status; 416} 417 418static int dsps_musb_exit(struct musb *musb) 419{ 420 struct device *dev = musb->controller; 421 struct musb_hdrc_platform_data *plat = dev->platform_data; 422 struct omap_musb_board_data *data = plat->board_data; 423 struct platform_device *pdev = to_platform_device(dev->parent); 424 struct dsps_glue *glue = platform_get_drvdata(pdev); 425 426 if (is_host_enabled(musb)) 427 del_timer_sync(&glue->timer); 428 429 /* Shutdown the on-chip PHY and its PLL. */ 430 if (data->set_phy_power) 431 data->set_phy_power(0); 432 433 /* NOP driver needs change if supporting dual instance */ 434 usb_put_phy(musb->xceiv); 435 usb_nop_xceiv_unregister(); 436 437 return 0; 438} 439 440static struct musb_platform_ops dsps_ops = { 441 .init = dsps_musb_init, 442 .exit = dsps_musb_exit, 443 444 .enable = dsps_musb_enable, 445 .disable = dsps_musb_disable, 446 447 .try_idle = dsps_musb_try_idle, 448}; 449 450static u64 musb_dmamask = DMA_BIT_MASK(32); 451 452static int __devinit dsps_create_musb_pdev(struct dsps_glue *glue, u8 id) 453{ 454 struct device *dev = glue->dev; 455 struct platform_device *pdev = to_platform_device(dev); 456 struct musb_hdrc_platform_data *pdata = dev->platform_data; 457 struct platform_device *musb; 458 struct resource *res; 459 struct resource resources[2]; 460 char res_name[10]; 461 int ret; 462 463 /* get memory resource */ 464 sprintf(res_name, "musb%d", id); 465 res = platform_get_resource_byname(pdev, IORESOURCE_MEM, res_name); 466 if (!res) { 467 dev_err(dev, "%s get mem resource failed\n", res_name); 468 ret = -ENODEV; 469 goto err0; 470 } 471 res->parent = NULL; 472 resources[0] = *res; 473 474 /* get irq resource */ 475 sprintf(res_name, "musb%d-irq", id); 476 res = platform_get_resource_byname(pdev, IORESOURCE_IRQ, res_name); 477 if (!res) { 478 dev_err(dev, "%s get irq resource failed\n", res_name); 479 ret = -ENODEV; 480 goto err0; 481 } 482 strcpy((u8 *)res->name, "mc"); 483 res->parent = NULL; 484 resources[1] = *res; 485 486 /* allocate the child platform device */ 487 musb = platform_device_alloc("musb-hdrc", -1); 488 if (!musb) { 489 dev_err(dev, "failed to allocate musb device\n"); 490 ret = -ENOMEM; 491 goto err0; 492 } 493 494 musb->dev.parent = dev; 495 musb->dev.dma_mask = &musb_dmamask; 496 musb->dev.coherent_dma_mask = musb_dmamask; 497 498 glue->musb = musb; 499 500 pdata->platform_ops = &dsps_ops; 501 502 ret = platform_device_add_resources(musb, resources, 2); 503 if (ret) { 504 dev_err(dev, "failed to add resources\n"); 505 goto err1; 506 } 507 508 ret = platform_device_add_data(musb, pdata, sizeof(*pdata)); 509 if (ret) { 510 dev_err(dev, "failed to add platform_data\n"); 511 goto err1; 512 } 513 514 ret = platform_device_add(musb); 515 if (ret) { 516 dev_err(dev, "failed to register musb device\n"); 517 goto err1; 518 } 519 520 return 0; 521 522err1: 523 platform_device_put(musb); 524err0: 525 return ret; 526} 527 528static void __devexit dsps_delete_musb_pdev(struct dsps_glue *glue) 529{ 530 platform_device_del(glue->musb); 531 platform_device_put(glue->musb); 532} 533 534static int __devinit dsps_probe(struct platform_device *pdev) 535{ 536 const struct platform_device_id *id = platform_get_device_id(pdev); 537 const struct dsps_musb_wrapper *wrp = 538 (struct dsps_musb_wrapper *)id->driver_data; 539 struct dsps_glue *glue; 540 struct resource *iomem; 541 int ret; 542 543 /* allocate glue */ 544 glue = kzalloc(sizeof(*glue), GFP_KERNEL); 545 if (!glue) { 546 dev_err(&pdev->dev, "unable to allocate glue memory\n"); 547 ret = -ENOMEM; 548 goto err0; 549 } 550 551 /* get memory resource */ 552 iomem = platform_get_resource(pdev, IORESOURCE_MEM, 0); 553 if (!iomem) { 554 dev_err(&pdev->dev, "failed to get usbss mem resourse\n"); 555 ret = -ENODEV; 556 goto err1; 557 } 558 559 glue->dev = &pdev->dev; 560 561 glue->wrp = kmemdup(wrp, sizeof(*wrp), GFP_KERNEL); 562 if (!glue->wrp) { 563 dev_err(&pdev->dev, "failed to duplicate wrapper struct memory\n"); 564 ret = -ENOMEM; 565 goto err1; 566 } 567 platform_set_drvdata(pdev, glue); 568 569 /* create the child platform device for first instances of musb */ 570 ret = dsps_create_musb_pdev(glue, 0); 571 if (ret != 0) { 572 dev_err(&pdev->dev, "failed to create child pdev\n"); 573 goto err2; 574 } 575 576 /* enable the usbss clocks */ 577 pm_runtime_enable(&pdev->dev); 578 579 ret = pm_runtime_get_sync(&pdev->dev); 580 if (ret < 0) { 581 dev_err(&pdev->dev, "pm_runtime_get_sync FAILED"); 582 goto err3; 583 } 584 585 return 0; 586 587err3: 588 pm_runtime_disable(&pdev->dev); 589err2: 590 kfree(glue->wrp); 591err1: 592 kfree(glue); 593err0: 594 return ret; 595} 596static int __devexit dsps_remove(struct platform_device *pdev) 597{ 598 struct dsps_glue *glue = platform_get_drvdata(pdev); 599 600 /* delete the child platform device */ 601 dsps_delete_musb_pdev(glue); 602 603 /* disable usbss clocks */ 604 pm_runtime_put(&pdev->dev); 605 pm_runtime_disable(&pdev->dev); 606 kfree(glue->wrp); 607 kfree(glue); 608 return 0; 609} 610 611#ifdef CONFIG_PM_SLEEP 612static int dsps_suspend(struct device *dev) 613{ 614 struct musb_hdrc_platform_data *plat = dev->platform_data; 615 struct omap_musb_board_data *data = plat->board_data; 616 617 /* Shutdown the on-chip PHY and its PLL. */ 618 if (data->set_phy_power) 619 data->set_phy_power(0); 620 621 return 0; 622} 623 624static int dsps_resume(struct device *dev) 625{ 626 struct musb_hdrc_platform_data *plat = dev->platform_data; 627 struct omap_musb_board_data *data = plat->board_data; 628 629 /* Start the on-chip PHY and its PLL. */ 630 if (data->set_phy_power) 631 data->set_phy_power(1); 632 633 return 0; 634} 635#endif 636 637static SIMPLE_DEV_PM_OPS(dsps_pm_ops, dsps_suspend, dsps_resume); 638 639static const struct dsps_musb_wrapper ti81xx_driver_data __devinitconst = { 640 .revision = 0x00, 641 .control = 0x14, 642 .status = 0x18, 643 .eoi = 0x24, 644 .epintr_set = 0x38, 645 .epintr_clear = 0x40, 646 .epintr_status = 0x30, 647 .coreintr_set = 0x3c, 648 .coreintr_clear = 0x44, 649 .coreintr_status = 0x34, 650 .phy_utmi = 0xe0, 651 .mode = 0xe8, 652 .reset = 0, 653 .otg_disable = 21, 654 .iddig = 8, 655 .usb_shift = 0, 656 .usb_mask = 0x1ff, 657 .usb_bitmap = (0x1ff << 0), 658 .drvvbus = 8, 659 .txep_shift = 0, 660 .txep_mask = 0xffff, 661 .txep_bitmap = (0xffff << 0), 662 .rxep_shift = 16, 663 .rxep_mask = 0xfffe, 664 .rxep_bitmap = (0xfffe << 16), 665 .musb_core_offset = 0x400, 666 .poll_seconds = 2, 667}; 668 669static const struct platform_device_id musb_dsps_id_table[] __devinitconst = { 670 { 671 .name = "musb-ti81xx", 672 .driver_data = (kernel_ulong_t) &ti81xx_driver_data, 673 }, 674 { }, /* Terminating Entry */ 675}; 676MODULE_DEVICE_TABLE(platform, musb_dsps_id_table); 677 678static const struct of_device_id musb_dsps_of_match[] __devinitconst = { 679 { .compatible = "musb-ti81xx", }, 680 { .compatible = "ti,ti81xx-musb", }, 681 { .compatible = "ti,am335x-musb", }, 682 { }, 683}; 684MODULE_DEVICE_TABLE(of, musb_dsps_of_match); 685 686static struct platform_driver dsps_usbss_driver = { 687 .probe = dsps_probe, 688 .remove = __devexit_p(dsps_remove), 689 .driver = { 690 .name = "musb-dsps", 691 .pm = &dsps_pm_ops, 692 .of_match_table = musb_dsps_of_match, 693 }, 694 .id_table = musb_dsps_id_table, 695}; 696 697MODULE_DESCRIPTION("TI DSPS MUSB Glue Layer"); 698MODULE_AUTHOR("Ravi B <ravibabu@ti.com>"); 699MODULE_AUTHOR("Ajay Kumar Gupta <ajay.gupta@ti.com>"); 700MODULE_LICENSE("GPL v2"); 701 702static int __init dsps_init(void) 703{ 704 return platform_driver_register(&dsps_usbss_driver); 705} 706subsys_initcall(dsps_init); 707 708static void __exit dsps_exit(void) 709{ 710 platform_driver_unregister(&dsps_usbss_driver); 711} 712module_exit(dsps_exit); 713