musb_dsps.c revision 721002ec1dd55a52425455826af49cf8853b2d4f
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/platform_device.h> 35#include <linux/dma-mapping.h> 36#include <linux/pm_runtime.h> 37#include <linux/module.h> 38 39#include <linux/of.h> 40#include <linux/of_device.h> 41#include <linux/of_address.h> 42 43#include <plat/usb.h> 44 45#include "musb_core.h" 46 47/** 48 * avoid using musb_readx()/musb_writex() as glue layer should not be 49 * dependent on musb core layer symbols. 50 */ 51static inline u8 dsps_readb(const void __iomem *addr, unsigned offset) 52 { return __raw_readb(addr + offset); } 53 54static inline u32 dsps_readl(const void __iomem *addr, unsigned offset) 55 { return __raw_readl(addr + offset); } 56 57static inline void dsps_writeb(void __iomem *addr, unsigned offset, u8 data) 58 { __raw_writeb(data, addr + offset); } 59 60static inline void dsps_writel(void __iomem *addr, unsigned offset, u32 data) 61 { __raw_writel(data, addr + offset); } 62 63/** 64 * DSPS musb wrapper register offset. 65 * FIXME: This should be expanded to have all the wrapper registers from TI DSPS 66 * musb ips. 67 */ 68struct dsps_musb_wrapper { 69 u16 revision; 70 u16 control; 71 u16 status; 72 u16 eoi; 73 u16 epintr_set; 74 u16 epintr_clear; 75 u16 epintr_status; 76 u16 coreintr_set; 77 u16 coreintr_clear; 78 u16 coreintr_status; 79 u16 phy_utmi; 80 u16 mode; 81 82 /* bit positions for control */ 83 unsigned reset:5; 84 85 /* bit positions for interrupt */ 86 unsigned usb_shift:5; 87 u32 usb_mask; 88 u32 usb_bitmap; 89 unsigned drvvbus:5; 90 91 unsigned txep_shift:5; 92 u32 txep_mask; 93 u32 txep_bitmap; 94 95 unsigned rxep_shift:5; 96 u32 rxep_mask; 97 u32 rxep_bitmap; 98 99 /* bit positions for phy_utmi */ 100 unsigned otg_disable:5; 101 102 /* bit positions for mode */ 103 unsigned iddig:5; 104 /* miscellaneous stuff */ 105 u32 musb_core_offset; 106 u8 poll_seconds; 107}; 108 109/** 110 * DSPS glue structure. 111 */ 112struct dsps_glue { 113 struct device *dev; 114 struct platform_device *musb; /* child musb pdev */ 115 const struct dsps_musb_wrapper *wrp; /* wrapper register offsets */ 116 struct timer_list timer; /* otg_workaround timer */ 117}; 118 119/** 120 * dsps_musb_enable - enable interrupts 121 */ 122static void dsps_musb_enable(struct musb *musb) 123{ 124 struct device *dev = musb->controller; 125 struct platform_device *pdev = to_platform_device(dev->parent); 126 struct dsps_glue *glue = platform_get_drvdata(pdev); 127 const struct dsps_musb_wrapper *wrp = glue->wrp; 128 void __iomem *reg_base = musb->ctrl_base; 129 u32 epmask, coremask; 130 131 /* Workaround: setup IRQs through both register sets. */ 132 epmask = ((musb->epmask & wrp->txep_mask) << wrp->txep_shift) | 133 ((musb->epmask & wrp->rxep_mask) << wrp->rxep_shift); 134 coremask = (wrp->usb_bitmap & ~MUSB_INTR_SOF); 135 136 dsps_writel(reg_base, wrp->epintr_set, epmask); 137 dsps_writel(reg_base, wrp->coreintr_set, coremask); 138 /* Force the DRVVBUS IRQ so we can start polling for ID change. */ 139 if (is_otg_enabled(musb)) 140 dsps_writel(reg_base, wrp->coreintr_set, 141 (1 << wrp->drvvbus) << wrp->usb_shift); 142} 143 144/** 145 * dsps_musb_disable - disable HDRC and flush interrupts 146 */ 147static void dsps_musb_disable(struct musb *musb) 148{ 149 struct device *dev = musb->controller; 150 struct platform_device *pdev = to_platform_device(dev->parent); 151 struct dsps_glue *glue = platform_get_drvdata(pdev); 152 const struct dsps_musb_wrapper *wrp = glue->wrp; 153 void __iomem *reg_base = musb->ctrl_base; 154 155 dsps_writel(reg_base, wrp->coreintr_clear, wrp->usb_bitmap); 156 dsps_writel(reg_base, wrp->epintr_clear, 157 wrp->txep_bitmap | wrp->rxep_bitmap); 158 dsps_writeb(musb->mregs, MUSB_DEVCTL, 0); 159 dsps_writel(reg_base, wrp->eoi, 0); 160} 161 162static void otg_timer(unsigned long _musb) 163{ 164 struct musb *musb = (void *)_musb; 165 void __iomem *mregs = musb->mregs; 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 u8 devctl; 171 unsigned long flags; 172 173 /* 174 * We poll because DSPS IP's won't expose several OTG-critical 175 * status change events (from the transceiver) otherwise. 176 */ 177 devctl = dsps_readb(mregs, MUSB_DEVCTL); 178 dev_dbg(musb->controller, "Poll devctl %02x (%s)\n", devctl, 179 otg_state_string(musb->xceiv->state)); 180 181 spin_lock_irqsave(&musb->lock, flags); 182 switch (musb->xceiv->state) { 183 case OTG_STATE_A_WAIT_BCON: 184 devctl &= ~MUSB_DEVCTL_SESSION; 185 dsps_writeb(musb->mregs, MUSB_DEVCTL, devctl); 186 187 devctl = dsps_readb(musb->mregs, MUSB_DEVCTL); 188 if (devctl & MUSB_DEVCTL_BDEVICE) { 189 musb->xceiv->state = OTG_STATE_B_IDLE; 190 MUSB_DEV_MODE(musb); 191 } else { 192 musb->xceiv->state = OTG_STATE_A_IDLE; 193 MUSB_HST_MODE(musb); 194 } 195 break; 196 case OTG_STATE_A_WAIT_VFALL: 197 musb->xceiv->state = OTG_STATE_A_WAIT_VRISE; 198 dsps_writel(musb->ctrl_base, wrp->coreintr_set, 199 MUSB_INTR_VBUSERROR << wrp->usb_shift); 200 break; 201 case OTG_STATE_B_IDLE: 202 if (!is_peripheral_enabled(musb)) 203 break; 204 205 devctl = dsps_readb(mregs, MUSB_DEVCTL); 206 if (devctl & MUSB_DEVCTL_BDEVICE) 207 mod_timer(&glue->timer, 208 jiffies + wrp->poll_seconds * HZ); 209 else 210 musb->xceiv->state = OTG_STATE_A_IDLE; 211 break; 212 default: 213 break; 214 } 215 spin_unlock_irqrestore(&musb->lock, flags); 216} 217 218static void dsps_musb_try_idle(struct musb *musb, unsigned long timeout) 219{ 220 struct device *dev = musb->controller; 221 struct platform_device *pdev = to_platform_device(dev->parent); 222 struct dsps_glue *glue = platform_get_drvdata(pdev); 223 static unsigned long last_timer; 224 225 if (!is_otg_enabled(musb)) 226 return; 227 228 if (timeout == 0) 229 timeout = jiffies + msecs_to_jiffies(3); 230 231 /* Never idle if active, or when VBUS timeout is not set as host */ 232 if (musb->is_active || (musb->a_wait_bcon == 0 && 233 musb->xceiv->state == OTG_STATE_A_WAIT_BCON)) { 234 dev_dbg(musb->controller, "%s active, deleting timer\n", 235 otg_state_string(musb->xceiv->state)); 236 del_timer(&glue->timer); 237 last_timer = jiffies; 238 return; 239 } 240 241 if (time_after(last_timer, timeout) && timer_pending(&glue->timer)) { 242 dev_dbg(musb->controller, 243 "Longer idle timer already pending, ignoring...\n"); 244 return; 245 } 246 last_timer = timeout; 247 248 dev_dbg(musb->controller, "%s inactive, starting idle timer for %u ms\n", 249 otg_state_string(musb->xceiv->state), 250 jiffies_to_msecs(timeout - jiffies)); 251 mod_timer(&glue->timer, timeout); 252} 253 254static irqreturn_t dsps_interrupt(int irq, void *hci) 255{ 256 struct musb *musb = hci; 257 void __iomem *reg_base = musb->ctrl_base; 258 struct device *dev = musb->controller; 259 struct platform_device *pdev = to_platform_device(dev->parent); 260 struct dsps_glue *glue = platform_get_drvdata(pdev); 261 const struct dsps_musb_wrapper *wrp = glue->wrp; 262 unsigned long flags; 263 irqreturn_t ret = IRQ_NONE; 264 u32 epintr, usbintr; 265 266 spin_lock_irqsave(&musb->lock, flags); 267 268 /* Get endpoint interrupts */ 269 epintr = dsps_readl(reg_base, wrp->epintr_status); 270 musb->int_rx = (epintr & wrp->rxep_bitmap) >> wrp->rxep_shift; 271 musb->int_tx = (epintr & wrp->txep_bitmap) >> wrp->txep_shift; 272 273 if (epintr) 274 dsps_writel(reg_base, wrp->epintr_status, epintr); 275 276 /* Get usb core interrupts */ 277 usbintr = dsps_readl(reg_base, wrp->coreintr_status); 278 if (!usbintr && !epintr) 279 goto eoi; 280 281 musb->int_usb = (usbintr & wrp->usb_bitmap) >> wrp->usb_shift; 282 if (usbintr) 283 dsps_writel(reg_base, wrp->coreintr_status, usbintr); 284 285 dev_dbg(musb->controller, "usbintr (%x) epintr(%x)\n", 286 usbintr, epintr); 287 /* 288 * DRVVBUS IRQs are the only proxy we have (a very poor one!) for 289 * DSPS IP's missing ID change IRQ. We need an ID change IRQ to 290 * switch appropriately between halves of the OTG state machine. 291 * Managing DEVCTL.SESSION per Mentor docs requires that we know its 292 * value but DEVCTL.BDEVICE is invalid without DEVCTL.SESSION set. 293 * Also, DRVVBUS pulses for SRP (but not at 5V) ... 294 */ 295 if ((usbintr & MUSB_INTR_BABBLE) && is_host_enabled(musb)) 296 pr_info("CAUTION: musb: Babble Interrupt Occured\n"); 297 298 if (usbintr & ((1 << wrp->drvvbus) << wrp->usb_shift)) { 299 int drvvbus = dsps_readl(reg_base, wrp->status); 300 void __iomem *mregs = musb->mregs; 301 u8 devctl = dsps_readb(mregs, MUSB_DEVCTL); 302 int err; 303 304 err = is_host_enabled(musb) && (musb->int_usb & 305 MUSB_INTR_VBUSERROR); 306 if (err) { 307 /* 308 * The Mentor core doesn't debounce VBUS as needed 309 * to cope with device connect current spikes. This 310 * means it's not uncommon for bus-powered devices 311 * to get VBUS errors during enumeration. 312 * 313 * This is a workaround, but newer RTL from Mentor 314 * seems to allow a better one: "re"-starting sessions 315 * without waiting for VBUS to stop registering in 316 * devctl. 317 */ 318 musb->int_usb &= ~MUSB_INTR_VBUSERROR; 319 musb->xceiv->state = OTG_STATE_A_WAIT_VFALL; 320 mod_timer(&glue->timer, 321 jiffies + wrp->poll_seconds * HZ); 322 WARNING("VBUS error workaround (delay coming)\n"); 323 } else if (is_host_enabled(musb) && drvvbus) { 324 musb->is_active = 1; 325 MUSB_HST_MODE(musb); 326 musb->xceiv->otg->default_a = 1; 327 musb->xceiv->state = OTG_STATE_A_WAIT_VRISE; 328 del_timer(&glue->timer); 329 } else { 330 musb->is_active = 0; 331 MUSB_DEV_MODE(musb); 332 musb->xceiv->otg->default_a = 0; 333 musb->xceiv->state = OTG_STATE_B_IDLE; 334 } 335 336 /* NOTE: this must complete power-on within 100 ms. */ 337 dev_dbg(musb->controller, "VBUS %s (%s)%s, devctl %02x\n", 338 drvvbus ? "on" : "off", 339 otg_state_string(musb->xceiv->state), 340 err ? " ERROR" : "", 341 devctl); 342 ret = IRQ_HANDLED; 343 } 344 345 if (musb->int_tx || musb->int_rx || musb->int_usb) 346 ret |= musb_interrupt(musb); 347 348 eoi: 349 /* EOI needs to be written for the IRQ to be re-asserted. */ 350 if (ret == IRQ_HANDLED || epintr || usbintr) 351 dsps_writel(reg_base, wrp->eoi, 1); 352 353 /* Poll for ID change */ 354 if (is_otg_enabled(musb) && musb->xceiv->state == OTG_STATE_B_IDLE) 355 mod_timer(&glue->timer, jiffies + wrp->poll_seconds * HZ); 356 357 spin_unlock_irqrestore(&musb->lock, flags); 358 359 return ret; 360} 361 362static int dsps_musb_init(struct musb *musb) 363{ 364 struct device *dev = musb->controller; 365 struct musb_hdrc_platform_data *plat = dev->platform_data; 366 struct platform_device *pdev = to_platform_device(dev->parent); 367 struct dsps_glue *glue = platform_get_drvdata(pdev); 368 const struct dsps_musb_wrapper *wrp = glue->wrp; 369 struct omap_musb_board_data *data = plat->board_data; 370 void __iomem *reg_base = musb->ctrl_base; 371 u32 rev, val; 372 int status; 373 374 /* mentor core register starts at offset of 0x400 from musb base */ 375 musb->mregs += wrp->musb_core_offset; 376 377 /* NOP driver needs change if supporting dual instance */ 378 usb_nop_xceiv_register(); 379 musb->xceiv = usb_get_phy(); 380 if (!musb->xceiv) 381 return -ENODEV; 382 383 /* Returns zero if e.g. not clocked */ 384 rev = dsps_readl(reg_base, wrp->revision); 385 if (!rev) { 386 status = -ENODEV; 387 goto err0; 388 } 389 390 if (is_host_enabled(musb)) 391 setup_timer(&glue->timer, otg_timer, (unsigned long) musb); 392 393 /* Reset the musb */ 394 dsps_writel(reg_base, wrp->control, (1 << wrp->reset)); 395 396 /* Start the on-chip PHY and its PLL. */ 397 if (data->set_phy_power) 398 data->set_phy_power(1); 399 400 musb->isr = dsps_interrupt; 401 402 /* reset the otgdisable bit, needed for host mode to work */ 403 val = dsps_readl(reg_base, wrp->phy_utmi); 404 val &= ~(1 << wrp->otg_disable); 405 dsps_writel(musb->ctrl_base, wrp->phy_utmi, val); 406 407 /* clear level interrupt */ 408 dsps_writel(reg_base, wrp->eoi, 0); 409 410 return 0; 411err0: 412 usb_put_phy(musb->xceiv); 413 usb_nop_xceiv_unregister(); 414 return status; 415} 416 417static int dsps_musb_exit(struct musb *musb) 418{ 419 struct device *dev = musb->controller; 420 struct musb_hdrc_platform_data *plat = dev->platform_data; 421 struct omap_musb_board_data *data = plat->board_data; 422 struct platform_device *pdev = to_platform_device(dev->parent); 423 struct dsps_glue *glue = platform_get_drvdata(pdev); 424 425 if (is_host_enabled(musb)) 426 del_timer_sync(&glue->timer); 427 428 /* Shutdown the on-chip PHY and its PLL. */ 429 if (data->set_phy_power) 430 data->set_phy_power(0); 431 432 /* NOP driver needs change if supporting dual instance */ 433 usb_put_phy(musb->xceiv); 434 usb_nop_xceiv_unregister(); 435 436 return 0; 437} 438 439static struct musb_platform_ops dsps_ops = { 440 .init = dsps_musb_init, 441 .exit = dsps_musb_exit, 442 443 .enable = dsps_musb_enable, 444 .disable = dsps_musb_disable, 445 446 .try_idle = dsps_musb_try_idle, 447}; 448 449static u64 musb_dmamask = DMA_BIT_MASK(32); 450 451static int __devinit dsps_create_musb_pdev(struct dsps_glue *glue, u8 id) 452{ 453 struct device *dev = glue->dev; 454 struct platform_device *pdev = to_platform_device(dev); 455 struct musb_hdrc_platform_data *pdata = dev->platform_data; 456 struct platform_device *musb; 457 struct resource *res; 458 struct resource resources[2]; 459 char res_name[10]; 460 int ret; 461 462 /* get memory resource */ 463 sprintf(res_name, "musb%d", id); 464 res = platform_get_resource_byname(pdev, IORESOURCE_MEM, res_name); 465 if (!res) { 466 dev_err(dev, "%s get mem resource failed\n", res_name); 467 ret = -ENODEV; 468 goto err0; 469 } 470 res->parent = NULL; 471 resources[0] = *res; 472 473 /* get irq resource */ 474 sprintf(res_name, "musb%d-irq", id); 475 res = platform_get_resource_byname(pdev, IORESOURCE_IRQ, res_name); 476 if (!res) { 477 dev_err(dev, "%s get irq resource failed\n", res_name); 478 ret = -ENODEV; 479 goto err0; 480 } 481 strcpy((u8 *)res->name, "mc"); 482 res->parent = NULL; 483 resources[1] = *res; 484 485 /* allocate the child platform device */ 486 musb = platform_device_alloc("musb-hdrc", -1); 487 if (!musb) { 488 dev_err(dev, "failed to allocate musb device\n"); 489 ret = -ENOMEM; 490 goto err0; 491 } 492 493 musb->dev.parent = dev; 494 musb->dev.dma_mask = &musb_dmamask; 495 musb->dev.coherent_dma_mask = musb_dmamask; 496 497 glue->musb = musb; 498 499 pdata->platform_ops = &dsps_ops; 500 501 ret = platform_device_add_resources(musb, resources, 2); 502 if (ret) { 503 dev_err(dev, "failed to add resources\n"); 504 goto err1; 505 } 506 507 ret = platform_device_add_data(musb, pdata, sizeof(*pdata)); 508 if (ret) { 509 dev_err(dev, "failed to add platform_data\n"); 510 goto err1; 511 } 512 513 ret = platform_device_add(musb); 514 if (ret) { 515 dev_err(dev, "failed to register musb device\n"); 516 goto err1; 517 } 518 519 return 0; 520 521err1: 522 platform_device_put(musb); 523err0: 524 return ret; 525} 526 527static void __devexit dsps_delete_musb_pdev(struct dsps_glue *glue) 528{ 529 platform_device_del(glue->musb); 530 platform_device_put(glue->musb); 531} 532 533static int __devinit dsps_probe(struct platform_device *pdev) 534{ 535 const struct platform_device_id *id = platform_get_device_id(pdev); 536 const struct dsps_musb_wrapper *wrp = 537 (struct dsps_musb_wrapper *)id->driver_data; 538 struct dsps_glue *glue; 539 struct resource *iomem; 540 int ret; 541 542 /* allocate glue */ 543 glue = kzalloc(sizeof(*glue), GFP_KERNEL); 544 if (!glue) { 545 dev_err(&pdev->dev, "unable to allocate glue memory\n"); 546 ret = -ENOMEM; 547 goto err0; 548 } 549 550 /* get memory resource */ 551 iomem = platform_get_resource(pdev, IORESOURCE_MEM, 0); 552 if (!iomem) { 553 dev_err(&pdev->dev, "failed to get usbss mem resourse\n"); 554 ret = -ENODEV; 555 goto err1; 556 } 557 558 glue->dev = &pdev->dev; 559 560 glue->wrp = kmemdup(wrp, sizeof(*wrp), GFP_KERNEL); 561 if (!glue->wrp) { 562 dev_err(&pdev->dev, "failed to duplicate wrapper struct memory\n"); 563 ret = -ENOMEM; 564 goto err1; 565 } 566 platform_set_drvdata(pdev, glue); 567 568 /* create the child platform device for first instances of musb */ 569 ret = dsps_create_musb_pdev(glue, 0); 570 if (ret != 0) { 571 dev_err(&pdev->dev, "failed to create child pdev\n"); 572 goto err2; 573 } 574 575 /* enable the usbss clocks */ 576 pm_runtime_enable(&pdev->dev); 577 578 ret = pm_runtime_get_sync(&pdev->dev); 579 if (ret < 0) { 580 dev_err(&pdev->dev, "pm_runtime_get_sync FAILED"); 581 goto err3; 582 } 583 584 return 0; 585 586err3: 587 pm_runtime_disable(&pdev->dev); 588err2: 589 kfree(glue->wrp); 590err1: 591 kfree(glue); 592err0: 593 return ret; 594} 595static int __devexit dsps_remove(struct platform_device *pdev) 596{ 597 struct dsps_glue *glue = platform_get_drvdata(pdev); 598 599 /* delete the child platform device */ 600 dsps_delete_musb_pdev(glue); 601 602 /* disable usbss clocks */ 603 pm_runtime_put(&pdev->dev); 604 pm_runtime_disable(&pdev->dev); 605 kfree(glue->wrp); 606 kfree(glue); 607 return 0; 608} 609 610#ifdef CONFIG_PM_SLEEP 611static int dsps_suspend(struct device *dev) 612{ 613 struct musb_hdrc_platform_data *plat = dev->platform_data; 614 struct omap_musb_board_data *data = plat->board_data; 615 616 /* Shutdown the on-chip PHY and its PLL. */ 617 if (data->set_phy_power) 618 data->set_phy_power(0); 619 620 return 0; 621} 622 623static int dsps_resume(struct device *dev) 624{ 625 struct musb_hdrc_platform_data *plat = dev->platform_data; 626 struct omap_musb_board_data *data = plat->board_data; 627 628 /* Start the on-chip PHY and its PLL. */ 629 if (data->set_phy_power) 630 data->set_phy_power(1); 631 632 return 0; 633} 634#endif 635 636static SIMPLE_DEV_PM_OPS(dsps_pm_ops, dsps_suspend, dsps_resume); 637 638static const struct dsps_musb_wrapper ti81xx_driver_data __devinitconst = { 639 .revision = 0x00, 640 .control = 0x14, 641 .status = 0x18, 642 .eoi = 0x24, 643 .epintr_set = 0x38, 644 .epintr_clear = 0x40, 645 .epintr_status = 0x30, 646 .coreintr_set = 0x3c, 647 .coreintr_clear = 0x44, 648 .coreintr_status = 0x34, 649 .phy_utmi = 0xe0, 650 .mode = 0xe8, 651 .reset = 0, 652 .otg_disable = 21, 653 .iddig = 8, 654 .usb_shift = 0, 655 .usb_mask = 0x1ff, 656 .usb_bitmap = (0x1ff << 0), 657 .drvvbus = 8, 658 .txep_shift = 0, 659 .txep_mask = 0xffff, 660 .txep_bitmap = (0xffff << 0), 661 .rxep_shift = 16, 662 .rxep_mask = 0xfffe, 663 .rxep_bitmap = (0xfffe << 16), 664 .musb_core_offset = 0x400, 665 .poll_seconds = 2, 666}; 667 668static const struct platform_device_id musb_dsps_id_table[] __devinitconst = { 669 { 670 .name = "musb-ti81xx", 671 .driver_data = (kernel_ulong_t) &ti81xx_driver_data, 672 }, 673 { }, /* Terminating Entry */ 674}; 675MODULE_DEVICE_TABLE(platform, musb_dsps_id_table); 676 677static const struct of_device_id musb_dsps_of_match[] __devinitconst = { 678 { .compatible = "musb-ti81xx", }, 679 { .compatible = "ti,ti81xx-musb", }, 680 { .compatible = "ti,am335x-musb", }, 681 { }, 682}; 683MODULE_DEVICE_TABLE(of, musb_dsps_of_match); 684 685static struct platform_driver dsps_usbss_driver = { 686 .probe = dsps_probe, 687 .remove = __devexit_p(dsps_remove), 688 .driver = { 689 .name = "musb-dsps", 690 .pm = &dsps_pm_ops, 691 .of_match_table = musb_dsps_of_match, 692 }, 693 .id_table = musb_dsps_id_table, 694}; 695 696MODULE_DESCRIPTION("TI DSPS MUSB Glue Layer"); 697MODULE_AUTHOR("Ravi B <ravibabu@ti.com>"); 698MODULE_AUTHOR("Ajay Kumar Gupta <ajay.gupta@ti.com>"); 699MODULE_LICENSE("GPL v2"); 700 701static int __init dsps_init(void) 702{ 703 return platform_driver_register(&dsps_usbss_driver); 704} 705subsys_initcall(dsps_init); 706 707static void __exit dsps_exit(void) 708{ 709 platform_driver_unregister(&dsps_usbss_driver); 710} 711module_exit(dsps_exit); 712