arch/arm/plat-omap/usb.c

   1 /*
   2  * arch/arm/plat-omap/usb.c -- platform level USB initialization
   3  *
   4  * Copyright (C) 2004 Texas Instruments, Inc.
   5  *
   6  * This program is free software; you can redistribute it and/or modify
   7  * it under the terms of the GNU General Public License as published by
   8  * the Free Software Foundation; either version 2 of the License, or
   9  * (at your option) any later version.
  10  *
  11  * This program is distributed in the hope that it will be useful,
  12  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14  * GNU General Public License for more details.
  15  *
  16  * You should have received a copy of the GNU General Public License
  17  * along with this program; if not, write to the Free Software
  18  * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
  19  */
  20
  21 #undef  DEBUG
  22
  23 #include <linux/module.h>
  24 #include <linux/kernel.h>
  25 #include <linux/types.h>
  26 #include <linux/errno.h>
  27 #include <linux/init.h>
  28 #include <linux/platform_device.h>
  29 #include <linux/usb/otg.h>
  30
  31 #include <asm/io.h>
  32 #include <asm/irq.h>
  33 #include <asm/system.h>
  34 #include <asm/hardware.h>
  35
  36 #include <asm/arch/mux.h>
  37 #include <asm/arch/usb.h>
  38 #include <asm/arch/board.h>
  39
  40 #ifdef CONFIG_ARCH_OMAP1
  41
  42 #define INT_USB_IRQ_GEN         IH2_BASE + 20
  43 #define INT_USB_IRQ_NISO        IH2_BASE + 30
  44 #define INT_USB_IRQ_ISO         IH2_BASE + 29
  45 #define INT_USB_IRQ_HGEN        INT_USB_HHC_1
  46 #define INT_USB_IRQ_OTG         IH2_BASE + 8
  47
  48 #else
  49
  50 #define INT_USB_IRQ_GEN         INT_24XX_USB_IRQ_GEN
  51 #define INT_USB_IRQ_NISO        INT_24XX_USB_IRQ_NISO
  52 #define INT_USB_IRQ_ISO         INT_24XX_USB_IRQ_ISO
  53 #define INT_USB_IRQ_HGEN        INT_24XX_USB_IRQ_HGEN
  54 #define INT_USB_IRQ_OTG         INT_24XX_USB_IRQ_OTG
  55
  56 #endif
  57
  58
  59 /* These routines should handle the standard chip-specific modes
  60  * for usb0/1/2 ports, covering basic mux and transceiver setup.
  61  *
  62  * Some board-*.c files will need to set up additional mux options,
  63  * like for suspend handling, vbus sensing, GPIOs, and the D+ pullup.
  64  */
  65
  66 /* TESTED ON:
  67  *  - 1611B H2 (with usb1 mini-AB) using standard Mini-B or OTG cables
  68  *  - 5912 OSK OHCI (with usb0 standard-A), standard A-to-B cables
  69  *  - 5912 OSK UDC, with *nonstandard* A-to-A cable
  70  *  - 1510 Innovator UDC with bundled usb0 cable
  71  *  - 1510 Innovator OHCI with bundled usb1/usb2 cable
  72  *  - 1510 Innovator OHCI with custom usb0 cable, feeding 5V VBUS
  73  *  - 1710 custom development board using alternate pin group
  74  *  - 1710 H3 (with usb1 mini-AB) using standard Mini-B or OTG cables
  75  */
  76
  77 /*-------------------------------------------------------------------------*/
  78
  79 #ifdef  CONFIG_ARCH_OMAP_OTG
  80
  81 static struct otg_transceiver *xceiv;
  82
  83 /**
  84  * otg_get_transceiver - find the (single) OTG transceiver driver
  85  *
  86  * Returns the transceiver driver, after getting a refcount to it; or
  87  * null if there is no such transceiver.  The caller is responsible for
  88  * releasing that count.
  89  */
  90 struct otg_transceiver *otg_get_transceiver(void)
  91 {
  92         if (xceiv)
  93                 get_device(xceiv->dev);
  94         return xceiv;
  95 }
  96 EXPORT_SYMBOL(otg_get_transceiver);
  97
  98 int otg_set_transceiver(struct otg_transceiver *x)
  99 {
 100         if (xceiv && x)
 101                 return -EBUSY;
 102         xceiv = x;
 103         return 0;
 104 }
 105 EXPORT_SYMBOL(otg_set_transceiver);
 106
 107 #endif
 108
 109 /*-------------------------------------------------------------------------*/
 110
 111 #if defined(CONFIG_ARCH_OMAP_OTG) || defined(CONFIG_ARCH_OMAP15XX)
 112
 113 static u32 __init omap_usb0_init(unsigned nwires, unsigned is_device)
 114 {
 115         u32     syscon1 = 0;
 116
 117         if (cpu_is_omap24xx())
 118                 CONTROL_DEVCONF_REG &= ~USBT0WRMODEI(USB_BIDIR_TLL);
 119
 120         if (nwires == 0) {
 121                 if (cpu_class_is_omap1() && !cpu_is_omap15xx()) {
 122                         /* pulldown D+/D- */
 123                         USB_TRANSCEIVER_CTRL_REG &= ~(3 << 1);
 124                 }
 125                 return 0;
 126         }
 127
 128         if (is_device) {
 129                 if (cpu_is_omap24xx())
 130                         omap_cfg_reg(J20_24XX_USB0_PUEN);
 131                 else
 132                         omap_cfg_reg(W4_USB_PUEN);
 133         }
 134
 135         /* internal transceiver (unavailable on 17xx, 24xx) */
 136         if (!cpu_class_is_omap2() && nwires == 2) {
 137                 // omap_cfg_reg(P9_USB_DP);
 138                 // omap_cfg_reg(R8_USB_DM);
 139
 140                 if (cpu_is_omap15xx()) {
 141                         /* This works on 1510-Innovator */
 142                         return 0;
 143                 }
 144
 145                 /* NOTES:
 146                  *  - peripheral should configure VBUS detection!
 147                  *  - only peripherals may use the internal D+/D- pulldowns
 148                  *  - OTG support on this port not yet written
 149                  */
 150
 151                 USB_TRANSCEIVER_CTRL_REG &= ~(7 << 4);
 152                 if (!is_device)
 153                         USB_TRANSCEIVER_CTRL_REG |= (3 << 1);
 154
 155                 return 3 << 16;
 156         }
 157
 158         /* alternate pin config, external transceiver */
 159         if (cpu_is_omap15xx()) {
 160                 printk(KERN_ERR "no usb0 alt pin config on 15xx\n");
 161                 return 0;
 162         }
 163
 164         if (cpu_is_omap24xx()) {
 165                 omap_cfg_reg(K18_24XX_USB0_DAT);
 166                 omap_cfg_reg(K19_24XX_USB0_TXEN);
 167                 omap_cfg_reg(J14_24XX_USB0_SE0);
 168                 if (nwires != 3)
 169                         omap_cfg_reg(J18_24XX_USB0_RCV);
 170         } else {
 171                 omap_cfg_reg(V6_USB0_TXD);
 172                 omap_cfg_reg(W9_USB0_TXEN);
 173                 omap_cfg_reg(W5_USB0_SE0);
 174                 if (nwires != 3)
 175                         omap_cfg_reg(Y5_USB0_RCV);
 176         }
 177
 178         /* NOTE:  SPEED and SUSP aren't configured here.  OTG hosts
 179          * may be able to use I2C requests to set those bits along
 180          * with VBUS switching and overcurrent detction.
 181          */
 182
 183         if (cpu_class_is_omap1() && nwires != 6)
 184                 USB_TRANSCEIVER_CTRL_REG &= ~CONF_USB2_UNI_R;
 185
 186         switch (nwires) {
 187         case 3:
 188                 syscon1 = 2;
 189                 if (cpu_is_omap24xx())
 190                         CONTROL_DEVCONF_REG |= USBT0WRMODEI(USB_BIDIR);
 191                 break;
 192         case 4:
 193                 syscon1 = 1;
 194                 if (cpu_is_omap24xx())
 195                         CONTROL_DEVCONF_REG |= USBT0WRMODEI(USB_BIDIR);
 196                 break;
 197         case 6:
 198                 syscon1 = 3;
 199                 if (cpu_is_omap24xx()) {
 200                         omap_cfg_reg(J19_24XX_USB0_VP);
 201                         omap_cfg_reg(K20_24XX_USB0_VM);
 202                         CONTROL_DEVCONF_REG |= USBT0WRMODEI(USB_UNIDIR);
 203                 } else {
 204                         omap_cfg_reg(AA9_USB0_VP);
 205                         omap_cfg_reg(R9_USB0_VM);
 206                         USB_TRANSCEIVER_CTRL_REG |= CONF_USB2_UNI_R;
 207                 }
 208                 break;
 209         default:
 210                 printk(KERN_ERR "illegal usb%d %d-wire transceiver\n",
 211                         0, nwires);
 212         }
 213         return syscon1 << 16;
 214 }
 215
 216 static u32 __init omap_usb1_init(unsigned nwires)
 217 {
 218         u32     syscon1 = 0;
 219
 220         if (cpu_class_is_omap1() && !cpu_is_omap15xx() && nwires != 6)
 221                 USB_TRANSCEIVER_CTRL_REG &= ~CONF_USB1_UNI_R;
 222         if (cpu_is_omap24xx())
 223                 CONTROL_DEVCONF_REG &= ~USBT1WRMODEI(USB_BIDIR_TLL);
 224
 225         if (nwires == 0)
 226                 return 0;
 227
 228         /* external transceiver */
 229         if (cpu_class_is_omap1()) {
 230                 omap_cfg_reg(USB1_TXD);
 231                 omap_cfg_reg(USB1_TXEN);
 232                 if (nwires != 3)
 233                         omap_cfg_reg(USB1_RCV);
 234         }
 235
 236         if (cpu_is_omap15xx()) {
 237                 omap_cfg_reg(USB1_SEO);
 238                 omap_cfg_reg(USB1_SPEED);
 239                 // SUSP
 240         } else if (cpu_is_omap1610() || cpu_is_omap5912()) {
 241                 omap_cfg_reg(W13_1610_USB1_SE0);
 242                 omap_cfg_reg(R13_1610_USB1_SPEED);
 243                 // SUSP
 244         } else if (cpu_is_omap1710()) {
 245                 omap_cfg_reg(R13_1710_USB1_SE0);
 246                 // SUSP
 247         } else if (cpu_is_omap24xx()) {
 248                 /* NOTE:  board-specific code must set up pin muxing for usb1,
 249                  * since each signal could come out on either of two balls.
 250                  */
 251         } else {
 252                 pr_debug("usb%d cpu unrecognized\n", 1);
 253                 return 0;
 254         }
 255
 256         switch (nwires) {
 257         case 2:
 258                 if (!cpu_is_omap24xx())
 259                         goto bad;
 260                 /* NOTE: board-specific code must override this setting if
 261                  * this TLL link is not using DP/DM
 262                  */
 263                 syscon1 = 1;
 264                 CONTROL_DEVCONF_REG |= USBT1WRMODEI(USB_BIDIR_TLL);
 265                 break;
 266         case 3:
 267                 syscon1 = 2;
 268                 if (cpu_is_omap24xx())
 269                         CONTROL_DEVCONF_REG |= USBT1WRMODEI(USB_BIDIR);
 270                 break;
 271         case 4:
 272                 syscon1 = 1;
 273                 if (cpu_is_omap24xx())
 274                         CONTROL_DEVCONF_REG |= USBT1WRMODEI(USB_BIDIR);
 275                 break;
 276         case 6:
 277                 if (cpu_is_omap24xx())
 278                         goto bad;
 279                 syscon1 = 3;
 280                 omap_cfg_reg(USB1_VP);
 281                 omap_cfg_reg(USB1_VM);
 282                 if (!cpu_is_omap15xx())
 283                         USB_TRANSCEIVER_CTRL_REG |= CONF_USB1_UNI_R;
 284                 break;
 285         default:
 286 bad:
 287                 printk(KERN_ERR "illegal usb%d %d-wire transceiver\n",
 288                         1, nwires);
 289         }
 290         return syscon1 << 20;
 291 }
 292
 293 static u32 __init omap_usb2_init(unsigned nwires, unsigned alt_pingroup)
 294 {
 295         u32     syscon1 = 0;
 296
 297         if (cpu_is_omap24xx()) {
 298                 CONTROL_DEVCONF_REG &= ~(USBT2WRMODEI(USB_BIDIR_TLL)
 299                                         | USBT2TLL5PI);
 300                 alt_pingroup = 0;
 301         }
 302
 303         /* NOTE omap1 erratum: must leave USB2_UNI_R set if usb0 in use */
 304         if (alt_pingroup || nwires == 0)
 305                 return 0;
 306
 307         if (cpu_class_is_omap1() && !cpu_is_omap15xx() && nwires != 6)
 308                 USB_TRANSCEIVER_CTRL_REG &= ~CONF_USB2_UNI_R;
 309
 310         /* external transceiver */
 311         if (cpu_is_omap15xx()) {
 312                 omap_cfg_reg(USB2_TXD);
 313                 omap_cfg_reg(USB2_TXEN);
 314                 omap_cfg_reg(USB2_SEO);
 315                 if (nwires != 3)
 316                         omap_cfg_reg(USB2_RCV);
 317                 /* there is no USB2_SPEED */
 318         } else if (cpu_is_omap16xx()) {
 319                 omap_cfg_reg(V6_USB2_TXD);
 320                 omap_cfg_reg(W9_USB2_TXEN);
 321                 omap_cfg_reg(W5_USB2_SE0);
 322                 if (nwires != 3)
 323                         omap_cfg_reg(Y5_USB2_RCV);
 324                 // FIXME omap_cfg_reg(USB2_SPEED);
 325         } else if (cpu_is_omap24xx()) {
 326                 omap_cfg_reg(Y11_24XX_USB2_DAT);
 327                 omap_cfg_reg(AA10_24XX_USB2_SE0);
 328                 if (nwires > 2)
 329                         omap_cfg_reg(AA12_24XX_USB2_TXEN);
 330                 if (nwires > 3)
 331                         omap_cfg_reg(AA6_24XX_USB2_RCV);
 332         } else {
 333                 pr_debug("usb%d cpu unrecognized\n", 1);
 334                 return 0;
 335         }
 336         // if (cpu_class_is_omap1()) omap_cfg_reg(USB2_SUSP);
 337
 338         switch (nwires) {
 339         case 2:
 340                 if (!cpu_is_omap24xx())
 341                         goto bad;
 342                 /* NOTE: board-specific code must override this setting if
 343                  * this TLL link is not using DP/DM
 344                  */
 345                 syscon1 = 1;
 346                 CONTROL_DEVCONF_REG |= USBT2WRMODEI(USB_BIDIR_TLL);
 347                 break;
 348         case 3:
 349                 syscon1 = 2;
 350                 if (cpu_is_omap24xx())
 351                         CONTROL_DEVCONF_REG |= USBT2WRMODEI(USB_BIDIR);
 352                 break;
 353         case 4:
 354                 syscon1 = 1;
 355                 if (cpu_is_omap24xx())
 356                         CONTROL_DEVCONF_REG |= USBT2WRMODEI(USB_BIDIR);
 357                 break;
 358         case 5:
 359                 if (!cpu_is_omap24xx())
 360                         goto bad;
 361                 omap_cfg_reg(AA4_24XX_USB2_TLLSE0);
 362                 /* NOTE: board-specific code must override this setting if
 363                  * this TLL link is not using DP/DM.  Something must also
 364                  * set up OTG_SYSCON2.HMC_TLL{ATTACH,SPEED}
 365                  */
 366                 syscon1 = 3;
 367                 CONTROL_DEVCONF_REG |= USBT2WRMODEI(USB_UNIDIR_TLL)
 368                                         | USBT2TLL5PI;
 369                 break;
 370         case 6:
 371                 if (cpu_is_omap24xx())
 372                         goto bad;
 373                 syscon1 = 3;
 374                 if (cpu_is_omap15xx()) {
 375                         omap_cfg_reg(USB2_VP);
 376                         omap_cfg_reg(USB2_VM);
 377                 } else {
 378                         omap_cfg_reg(AA9_USB2_VP);
 379                         omap_cfg_reg(R9_USB2_VM);
 380                         USB_TRANSCEIVER_CTRL_REG |= CONF_USB2_UNI_R;
 381                 }
 382                 break;
 383         default:
 384 bad:
 385                 printk(KERN_ERR "illegal usb%d %d-wire transceiver\n",
 386                         2, nwires);
 387         }
 388         return syscon1 << 24;
 389 }
 390
 391 #endif
 392
 393 /*-------------------------------------------------------------------------*/
 394
 395 #if     defined(CONFIG_USB_GADGET_OMAP) || \
 396         defined(CONFIG_USB_OHCI_HCD) || defined(CONFIG_USB_OHCI_HCD_MODULE) || \
 397         (defined(CONFIG_USB_OTG) && defined(CONFIG_ARCH_OMAP_OTG))
 398 static void usb_release(struct device *dev)
 399 {
 400         /* normally not freed */
 401 }
 402 #endif
 403
 404 #ifdef  CONFIG_USB_GADGET_OMAP
 405
 406 static struct resource udc_resources[] = {
 407         /* order is significant! */
 408         {               /* registers */
 409                 .start          = UDC_BASE,
 410                 .end            = UDC_BASE + 0xff,
 411                 .flags          = IORESOURCE_MEM,
 412         }, {            /* general IRQ */
 413                 .start          = INT_USB_IRQ_GEN,
 414                 .flags          = IORESOURCE_IRQ,
 415         }, {            /* PIO IRQ */
 416                 .start          = INT_USB_IRQ_NISO,
 417                 .flags          = IORESOURCE_IRQ,
 418         }, {            /* SOF IRQ */
 419                 .start          = INT_USB_IRQ_ISO,
 420                 .flags          = IORESOURCE_IRQ,
 421         },
 422 };
 423
 424 static u64 udc_dmamask = ~(u32)0;
 425
 426 static struct platform_device udc_device = {
 427         .name           = "omap_udc",
 428         .id             = -1,
 429         .dev = {
 430                 .release                = usb_release,
 431                 .dma_mask               = &udc_dmamask,
 432                 .coherent_dma_mask      = 0xffffffff,
 433         },
 434         .num_resources  = ARRAY_SIZE(udc_resources),
 435         .resource       = udc_resources,
 436 };
 437
 438 #endif
 439
 440 #if     defined(CONFIG_USB_OHCI_HCD) || defined(CONFIG_USB_OHCI_HCD_MODULE)
 441
 442 /* The dmamask must be set for OHCI to work */
 443 static u64 ohci_dmamask = ~(u32)0;
 444
 445 static struct resource ohci_resources[] = {
 446         {
 447                 .start  = OMAP_OHCI_BASE,
 448                 .end    = OMAP_OHCI_BASE + 0xff,
 449                 .flags  = IORESOURCE_MEM,
 450         },
 451         {
 452                 .start  = INT_USB_IRQ_HGEN,
 453                 .flags  = IORESOURCE_IRQ,
 454         },
 455 };
 456
 457 static struct platform_device ohci_device = {
 458         .name                   = "ohci",
 459         .id                     = -1,
 460         .dev = {
 461                 .release                = usb_release,
 462                 .dma_mask               = &ohci_dmamask,
 463                 .coherent_dma_mask      = 0xffffffff,
 464         },
 465         .num_resources  = ARRAY_SIZE(ohci_resources),
 466         .resource               = ohci_resources,
 467 };
 468
 469 #endif
 470
 471 #if     defined(CONFIG_USB_OTG) && defined(CONFIG_ARCH_OMAP_OTG)
 472
 473 static struct resource otg_resources[] = {
 474         /* order is significant! */
 475         {
 476                 .start          = OTG_BASE,
 477                 .end            = OTG_BASE + 0xff,
 478                 .flags          = IORESOURCE_MEM,
 479         }, {
 480                 .start          = INT_USB_IRQ_OTG,
 481                 .flags          = IORESOURCE_IRQ,
 482         },
 483 };
 484
 485 static struct platform_device otg_device = {
 486         .name           = "omap_otg",
 487         .id             = -1,
 488         .dev = {
 489                 .release                = usb_release,
 490         },
 491         .num_resources  = ARRAY_SIZE(otg_resources),
 492         .resource       = otg_resources,
 493 };
 494
 495 #endif
 496
 497 /*-------------------------------------------------------------------------*/
 498
 499 #define ULPD_CLOCK_CTRL_REG     __REG16(ULPD_CLOCK_CTRL)
 500 #define ULPD_SOFT_REQ_REG       __REG16(ULPD_SOFT_REQ)
 501
 502
 503 // FIXME correct answer depends on hmc_mode,
 504 // as does (on omap1) any nonzero value for config->otg port number
 505 #ifdef  CONFIG_USB_GADGET_OMAP
 506 #define is_usb0_device(config)  1
 507 #else
 508 #define is_usb0_device(config)  0
 509 #endif
 510
 511 /*-------------------------------------------------------------------------*/
 512
 513 #ifdef  CONFIG_ARCH_OMAP_OTG
 514
 515 void __init
 516 omap_otg_init(struct omap_usb_config *config)
 517 {
 518         u32             syscon = OTG_SYSCON_1_REG & 0xffff;
 519         int             status;
 520         int             alt_pingroup = 0;
 521
 522         /* NOTE:  no bus or clock setup (yet?) */
 523
 524         syscon = OTG_SYSCON_1_REG & 0xffff;
 525         if (!(syscon & OTG_RESET_DONE))
 526                 pr_debug("USB resets not complete?\n");
 527
 528         // OTG_IRQ_EN_REG = 0;
 529
 530         /* pin muxing and transceiver pinouts */
 531         if (config->pins[0] > 2)        /* alt pingroup 2 */
 532                 alt_pingroup = 1;
 533         syscon |= omap_usb0_init(config->pins[0], is_usb0_device(config));
 534         syscon |= omap_usb1_init(config->pins[1]);
 535         syscon |= omap_usb2_init(config->pins[2], alt_pingroup);
 536         pr_debug("OTG_SYSCON_1_REG = %08x\n", syscon);
 537         OTG_SYSCON_1_REG = syscon;
 538
 539         syscon = config->hmc_mode;
 540         syscon |= USBX_SYNCHRO | (4 << 16) /* B_ASE0_BRST */;
 541 #ifdef  CONFIG_USB_OTG
 542         if (config->otg)
 543                 syscon |= OTG_EN;
 544 #endif
 545         if (cpu_class_is_omap1())
 546                 pr_debug("USB_TRANSCEIVER_CTRL_REG = %03x\n", USB_TRANSCEIVER_CTRL_REG);
 547         pr_debug("OTG_SYSCON_2_REG = %08x\n", syscon);
 548         OTG_SYSCON_2_REG = syscon;
 549
 550         printk("USB: hmc %d", config->hmc_mode);
 551         if (!alt_pingroup)
 552                 printk(", usb2 alt %d wires", config->pins[2]);
 553         else if (config->pins[0])
 554                 printk(", usb0 %d wires%s", config->pins[0],
 555                         is_usb0_device(config) ? " (dev)" : "");
 556         if (config->pins[1])
 557                 printk(", usb1 %d wires", config->pins[1]);
 558         if (!alt_pingroup && config->pins[2])
 559                 printk(", usb2 %d wires", config->pins[2]);
 560         if (config->otg)
 561                 printk(", Mini-AB on usb%d", config->otg - 1);
 562         printk("\n");
 563
 564         if (cpu_class_is_omap1()) {
 565                 /* leave USB clocks/controllers off until needed */
 566                 ULPD_SOFT_REQ_REG &= ~SOFT_USB_CLK_REQ;
 567                 ULPD_CLOCK_CTRL_REG &= ~USB_MCLK_EN;
 568                 ULPD_CLOCK_CTRL_REG |= DIS_USB_PVCI_CLK;
 569         }
 570         syscon = OTG_SYSCON_1_REG;
 571         syscon |= HST_IDLE_EN|DEV_IDLE_EN|OTG_IDLE_EN;
 572
 573 #ifdef  CONFIG_USB_GADGET_OMAP
 574         if (config->otg || config->register_dev) {
 575                 syscon &= ~DEV_IDLE_EN;
 576                 udc_device.dev.platform_data = config;
 577                 /* FIXME patch IRQ numbers for omap730 */
 578                 status = platform_device_register(&udc_device);
 579                 if (status)
 580                         pr_debug("can't register UDC device, %d\n", status);
 581         }
 582 #endif
 583
 584 #if     defined(CONFIG_USB_OHCI_HCD) || defined(CONFIG_USB_OHCI_HCD_MODULE)
 585         if (config->otg || config->register_host) {
 586                 syscon &= ~HST_IDLE_EN;
 587                 ohci_device.dev.platform_data = config;
 588                 if (cpu_is_omap730())
 589                         ohci_resources[1].start = INT_730_USB_HHC_1;
 590                 status = platform_device_register(&ohci_device);
 591                 if (status)
 592                         pr_debug("can't register OHCI device, %d\n", status);
 593         }
 594 #endif
 595
 596 #ifdef  CONFIG_USB_OTG
 597         if (config->otg) {
 598                 syscon &= ~OTG_IDLE_EN;
 599                 otg_device.dev.platform_data = config;
 600                 if (cpu_is_omap730())
 601                         otg_resources[1].start = INT_730_USB_OTG;
 602                 status = platform_device_register(&otg_device);
 603                 if (status)
 604                         pr_debug("can't register OTG device, %d\n", status);
 605         }
 606 #endif
 607         pr_debug("OTG_SYSCON_1_REG = %08x\n", syscon);
 608         OTG_SYSCON_1_REG = syscon;
 609
 610         status = 0;
 611 }
 612
 613 #else
 614 static inline void omap_otg_init(struct omap_usb_config *config) {}
 615 #endif
 616
 617 /*-------------------------------------------------------------------------*/
 618
 619 #ifdef  CONFIG_ARCH_OMAP15XX
 620
 621 #define ULPD_DPLL_CTRL_REG      __REG16(ULPD_DPLL_CTRL)
 622 #define DPLL_IOB                (1 << 13)
 623 #define DPLL_PLL_ENABLE         (1 << 4)
 624 #define DPLL_LOCK               (1 << 0)
 625
 626 #define ULPD_APLL_CTRL_REG      __REG16(ULPD_APLL_CTRL)
 627 #define APLL_NDPLL_SWITCH       (1 << 0)
 628
 629
 630 static void __init omap_1510_usb_init(struct omap_usb_config *config)
 631 {
 632         unsigned int val;
 633
 634         omap_usb0_init(config->pins[0], is_usb0_device(config));
 635         omap_usb1_init(config->pins[1]);
 636         omap_usb2_init(config->pins[2], 0);
 637
 638         val = omap_readl(MOD_CONF_CTRL_0) & ~(0x3f << 1);
 639         val |= (config->hmc_mode << 1);
 640         omap_writel(val, MOD_CONF_CTRL_0);
 641
 642         printk("USB: hmc %d", config->hmc_mode);
 643         if (config->pins[0])
 644                 printk(", usb0 %d wires%s", config->pins[0],
 645                         is_usb0_device(config) ? " (dev)" : "");
 646         if (config->pins[1])
 647                 printk(", usb1 %d wires", config->pins[1]);
 648         if (config->pins[2])
 649                 printk(", usb2 %d wires", config->pins[2]);
 650         printk("\n");
 651
 652         /* use DPLL for 48 MHz function clock */
 653         pr_debug("APLL %04x DPLL %04x REQ %04x\n", ULPD_APLL_CTRL_REG,
 654                         ULPD_DPLL_CTRL_REG, ULPD_SOFT_REQ_REG);
 655         ULPD_APLL_CTRL_REG &= ~APLL_NDPLL_SWITCH;
 656         ULPD_DPLL_CTRL_REG |= DPLL_IOB | DPLL_PLL_ENABLE;
 657         ULPD_SOFT_REQ_REG |= SOFT_UDC_REQ | SOFT_DPLL_REQ;
 658         while (!(ULPD_DPLL_CTRL_REG & DPLL_LOCK))
 659                 cpu_relax();
 660
 661 #ifdef  CONFIG_USB_GADGET_OMAP
 662         if (config->register_dev) {
 663                 int status;
 664
 665                 udc_device.dev.platform_data = config;
 666                 status = platform_device_register(&udc_device);
 667                 if (status)
 668                         pr_debug("can't register UDC device, %d\n", status);
 669                 /* udc driver gates 48MHz by D+ pullup */
 670         }
 671 #endif
 672
 673 #if     defined(CONFIG_USB_OHCI_HCD) || defined(CONFIG_USB_OHCI_HCD_MODULE)
 674         if (config->register_host) {
 675                 int status;
 676
 677                 ohci_device.dev.platform_data = config;
 678                 status = platform_device_register(&ohci_device);
 679                 if (status)
 680                         pr_debug("can't register OHCI device, %d\n", status);
 681                 /* hcd explicitly gates 48MHz */
 682         }
 683 #endif
 684 }
 685
 686 #else
 687 static inline void omap_1510_usb_init(struct omap_usb_config *config) {}
 688 #endif
 689
 690 /*-------------------------------------------------------------------------*/
 691
 692 static struct omap_usb_config platform_data;
 693
 694 static int __init
 695 omap_usb_init(void)
 696 {
 697         const struct omap_usb_config *config;
 698
 699         config = omap_get_config(OMAP_TAG_USB, struct omap_usb_config);
 700         if (config == NULL) {
 701                 printk(KERN_ERR "USB: No board-specific "
 702                                 "platform config found\n");
 703                 return -ENODEV;
 704         }
 705         platform_data = *config;
 706
 707         if (cpu_is_omap730() || cpu_is_omap16xx() || cpu_is_omap24xx())
 708                 omap_otg_init(&platform_data);
 709         else if (cpu_is_omap15xx())
 710                 omap_1510_usb_init(&platform_data);
 711         else {
 712                 printk(KERN_ERR "USB: No init for your chip yet\n");
 713                 return -ENODEV;
 714         }
 715         return 0;
 716 }
 717
 718 subsys_initcall(omap_usb_init);