arch/arm/mach-omap1/usb.c

   1 /*
   2  * Platform level USB initialization for FS USB OTG controller on omap1
   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 #include <linux/module.h>
  22 #include <linux/kernel.h>
  23 #include <linux/init.h>
  24 #include <linux/platform_device.h>
  25 #include <linux/io.h>
  26
  27 #include <asm/irq.h>
  28
  29 #include <mach/mux.h>
  30
  31 #include <mach/usb.h>
  32
  33 #include "common.h"
  34
  35 /* These routines should handle the standard chip-specific modes
  36  * for usb0/1/2 ports, covering basic mux and transceiver setup.
  37  *
  38  * Some board-*.c files will need to set up additional mux options,
  39  * like for suspend handling, vbus sensing, GPIOs, and the D+ pullup.
  40  */
  41
  42 /* TESTED ON:
  43  *  - 1611B H2 (with usb1 mini-AB) using standard Mini-B or OTG cables
  44  *  - 5912 OSK OHCI (with usb0 standard-A), standard A-to-B cables
  45  *  - 5912 OSK UDC, with *nonstandard* A-to-A cable
  46  *  - 1510 Innovator UDC with bundled usb0 cable
  47  *  - 1510 Innovator OHCI with bundled usb1/usb2 cable
  48  *  - 1510 Innovator OHCI with custom usb0 cable, feeding 5V VBUS
  49  *  - 1710 custom development board using alternate pin group
  50  *  - 1710 H3 (with usb1 mini-AB) using standard Mini-B or OTG cables
  51  */
  52
  53 #define INT_USB_IRQ_GEN         IH2_BASE + 20
  54 #define INT_USB_IRQ_NISO        IH2_BASE + 30
  55 #define INT_USB_IRQ_ISO         IH2_BASE + 29
  56 #define INT_USB_IRQ_HGEN        INT_USB_HHC_1
  57 #define INT_USB_IRQ_OTG         IH2_BASE + 8
  58
  59 #ifdef  CONFIG_ARCH_OMAP_OTG
  60
  61 static void __init
  62 omap_otg_init(struct omap_usb_config *config)
  63 {
  64         u32             syscon;
  65         int             alt_pingroup = 0;
  66         u16             w;
  67
  68         /* NOTE:  no bus or clock setup (yet?) */
  69
  70         syscon = omap_readl(OTG_SYSCON_1) & 0xffff;
  71         if (!(syscon & OTG_RESET_DONE))
  72                 pr_debug("USB resets not complete?\n");
  73
  74         //omap_writew(0, OTG_IRQ_EN);
  75
  76         /* pin muxing and transceiver pinouts */
  77         if (config->pins[0] > 2)        /* alt pingroup 2 */
  78                 alt_pingroup = 1;
  79         syscon |= config->usb0_init(config->pins[0], is_usb0_device(config));
  80         syscon |= config->usb1_init(config->pins[1]);
  81         syscon |= config->usb2_init(config->pins[2], alt_pingroup);
  82         pr_debug("OTG_SYSCON_1 = %08x\n", omap_readl(OTG_SYSCON_1));
  83         omap_writel(syscon, OTG_SYSCON_1);
  84
  85         syscon = config->hmc_mode;
  86         syscon |= USBX_SYNCHRO | (4 << 16) /* B_ASE0_BRST */;
  87 #ifdef  CONFIG_USB_OTG
  88         if (config->otg)
  89                 syscon |= OTG_EN;
  90 #endif
  91         pr_debug("USB_TRANSCEIVER_CTRL = %03x\n",
  92                  omap_readl(USB_TRANSCEIVER_CTRL));
  93         pr_debug("OTG_SYSCON_2 = %08x\n", omap_readl(OTG_SYSCON_2));
  94         omap_writel(syscon, OTG_SYSCON_2);
  95
  96         printk("USB: hmc %d", config->hmc_mode);
  97         if (!alt_pingroup)
  98                 pr_cont(", usb2 alt %d wires", config->pins[2]);
  99         else if (config->pins[0])
 100                 pr_cont(", usb0 %d wires%s", config->pins[0],
 101                         is_usb0_device(config) ? " (dev)" : "");
 102         if (config->pins[1])
 103                 pr_cont(", usb1 %d wires", config->pins[1]);
 104         if (!alt_pingroup && config->pins[2])
 105                 pr_cont(", usb2 %d wires", config->pins[2]);
 106         if (config->otg)
 107                 pr_cont(", Mini-AB on usb%d", config->otg - 1);
 108         pr_cont("\n");
 109
 110         /* leave USB clocks/controllers off until needed */
 111         w = omap_readw(ULPD_SOFT_REQ);
 112         w &= ~SOFT_USB_CLK_REQ;
 113         omap_writew(w, ULPD_SOFT_REQ);
 114
 115         w = omap_readw(ULPD_CLOCK_CTRL);
 116         w &= ~USB_MCLK_EN;
 117         w |= DIS_USB_PVCI_CLK;
 118         omap_writew(w, ULPD_CLOCK_CTRL);
 119
 120         syscon = omap_readl(OTG_SYSCON_1);
 121         syscon |= HST_IDLE_EN|DEV_IDLE_EN|OTG_IDLE_EN;
 122
 123 #if IS_ENABLED(CONFIG_USB_OMAP)
 124         if (config->otg || config->register_dev) {
 125                 struct platform_device *udc_device = config->udc_device;
 126                 int status;
 127
 128                 syscon &= ~DEV_IDLE_EN;
 129                 udc_device->dev.platform_data = config;
 130                 status = platform_device_register(udc_device);
 131                 if (status)
 132                         pr_debug("can't register UDC device, %d\n", status);
 133         }
 134 #endif
 135
 136 #if     IS_ENABLED(CONFIG_USB_OHCI_HCD)
 137         if (config->otg || config->register_host) {
 138                 struct platform_device *ohci_device = config->ohci_device;
 139                 int status;
 140
 141                 syscon &= ~HST_IDLE_EN;
 142                 ohci_device->dev.platform_data = config;
 143                 status = platform_device_register(ohci_device);
 144                 if (status)
 145                         pr_debug("can't register OHCI device, %d\n", status);
 146         }
 147 #endif
 148
 149 #ifdef  CONFIG_USB_OTG
 150         if (config->otg) {
 151                 struct platform_device *otg_device = config->otg_device;
 152                 int status;
 153
 154                 syscon &= ~OTG_IDLE_EN;
 155                 otg_device->dev.platform_data = config;
 156                 status = platform_device_register(otg_device);
 157                 if (status)
 158                         pr_debug("can't register OTG device, %d\n", status);
 159         }
 160 #endif
 161         pr_debug("OTG_SYSCON_1 = %08x\n", omap_readl(OTG_SYSCON_1));
 162         omap_writel(syscon, OTG_SYSCON_1);
 163 }
 164
 165 #else
 166 static void omap_otg_init(struct omap_usb_config *config) {}
 167 #endif
 168
 169 #if IS_ENABLED(CONFIG_USB_OMAP)
 170
 171 static struct resource udc_resources[] = {
 172         /* order is significant! */
 173         {               /* registers */
 174                 .start          = UDC_BASE,
 175                 .end            = UDC_BASE + 0xff,
 176                 .flags          = IORESOURCE_MEM,
 177         }, {            /* general IRQ */
 178                 .start          = INT_USB_IRQ_GEN,
 179                 .flags          = IORESOURCE_IRQ,
 180         }, {            /* PIO IRQ */
 181                 .start          = INT_USB_IRQ_NISO,
 182                 .flags          = IORESOURCE_IRQ,
 183         }, {            /* SOF IRQ */
 184                 .start          = INT_USB_IRQ_ISO,
 185                 .flags          = IORESOURCE_IRQ,
 186         },
 187 };
 188
 189 static u64 udc_dmamask = ~(u32)0;
 190
 191 static struct platform_device udc_device = {
 192         .name           = "omap_udc",
 193         .id             = -1,
 194         .dev = {
 195                 .dma_mask               = &udc_dmamask,
 196                 .coherent_dma_mask      = 0xffffffff,
 197         },
 198         .num_resources  = ARRAY_SIZE(udc_resources),
 199         .resource       = udc_resources,
 200 };
 201
 202 static inline void udc_device_init(struct omap_usb_config *pdata)
 203 {
 204         /* IRQ numbers for omap7xx */
 205         if(cpu_is_omap7xx()) {
 206                 udc_resources[1].start = INT_7XX_USB_GENI;
 207                 udc_resources[2].start = INT_7XX_USB_NON_ISO;
 208                 udc_resources[3].start = INT_7XX_USB_ISO;
 209         }
 210         pdata->udc_device = &udc_device;
 211 }
 212
 213 #else
 214
 215 static inline void udc_device_init(struct omap_usb_config *pdata)
 216 {
 217 }
 218
 219 #endif
 220
 221 #if     IS_ENABLED(CONFIG_USB_OHCI_HCD)
 222
 223 /* The dmamask must be set for OHCI to work */
 224 static u64 ohci_dmamask = ~(u32)0;
 225
 226 static struct resource ohci_resources[] = {
 227         {
 228                 .start  = OMAP_OHCI_BASE,
 229                 .end    = OMAP_OHCI_BASE + 0xff,
 230                 .flags  = IORESOURCE_MEM,
 231         },
 232         {
 233                 .start  = INT_USB_IRQ_HGEN,
 234                 .flags  = IORESOURCE_IRQ,
 235         },
 236 };
 237
 238 static struct platform_device ohci_device = {
 239         .name                   = "ohci",
 240         .id                     = -1,
 241         .dev = {
 242                 .dma_mask               = &ohci_dmamask,
 243                 .coherent_dma_mask      = 0xffffffff,
 244         },
 245         .num_resources  = ARRAY_SIZE(ohci_resources),
 246         .resource               = ohci_resources,
 247 };
 248
 249 static inline void ohci_device_init(struct omap_usb_config *pdata)
 250 {
 251         if (cpu_is_omap7xx())
 252                 ohci_resources[1].start = INT_7XX_USB_HHC_1;
 253         pdata->ohci_device = &ohci_device;
 254         pdata->ocpi_enable = &ocpi_enable;
 255 }
 256
 257 #else
 258
 259 static inline void ohci_device_init(struct omap_usb_config *pdata)
 260 {
 261 }
 262
 263 #endif
 264
 265 #if     defined(CONFIG_USB_OTG) && defined(CONFIG_ARCH_OMAP_OTG)
 266
 267 static struct resource otg_resources[] = {
 268         /* order is significant! */
 269         {
 270                 .start          = OTG_BASE,
 271                 .end            = OTG_BASE + 0xff,
 272                 .flags          = IORESOURCE_MEM,
 273         }, {
 274                 .start          = INT_USB_IRQ_OTG,
 275                 .flags          = IORESOURCE_IRQ,
 276         },
 277 };
 278
 279 static struct platform_device otg_device = {
 280         .name           = "omap_otg",
 281         .id             = -1,
 282         .num_resources  = ARRAY_SIZE(otg_resources),
 283         .resource       = otg_resources,
 284 };
 285
 286 static inline void otg_device_init(struct omap_usb_config *pdata)
 287 {
 288         if (cpu_is_omap7xx())
 289                 otg_resources[1].start = INT_7XX_USB_OTG;
 290         pdata->otg_device = &otg_device;
 291 }
 292
 293 #else
 294
 295 static inline void otg_device_init(struct omap_usb_config *pdata)
 296 {
 297 }
 298
 299 #endif
 300
 301 static u32 __init omap1_usb0_init(unsigned nwires, unsigned is_device)
 302 {
 303         u32     syscon1 = 0;
 304
 305         if (nwires == 0) {
 306                 if (!cpu_is_omap15xx()) {
 307                         u32 l;
 308
 309                         /* pulldown D+/D- */
 310                         l = omap_readl(USB_TRANSCEIVER_CTRL);
 311                         l &= ~(3 << 1);
 312                         omap_writel(l, USB_TRANSCEIVER_CTRL);
 313                 }
 314                 return 0;
 315         }
 316
 317         if (is_device) {
 318                 if (cpu_is_omap7xx()) {
 319                         omap_cfg_reg(AA17_7XX_USB_DM);
 320                         omap_cfg_reg(W16_7XX_USB_PU_EN);
 321                         omap_cfg_reg(W17_7XX_USB_VBUSI);
 322                         omap_cfg_reg(W18_7XX_USB_DMCK_OUT);
 323                         omap_cfg_reg(W19_7XX_USB_DCRST);
 324                 } else
 325                         omap_cfg_reg(W4_USB_PUEN);
 326         }
 327
 328         if (nwires == 2) {
 329                 u32 l;
 330
 331                 // omap_cfg_reg(P9_USB_DP);
 332                 // omap_cfg_reg(R8_USB_DM);
 333
 334                 if (cpu_is_omap15xx()) {
 335                         /* This works on 1510-Innovator */
 336                         return 0;
 337                 }
 338
 339                 /* NOTES:
 340                  *  - peripheral should configure VBUS detection!
 341                  *  - only peripherals may use the internal D+/D- pulldowns
 342                  *  - OTG support on this port not yet written
 343                  */
 344
 345                 /* Don't do this for omap7xx -- it causes USB to not work correctly */
 346                 if (!cpu_is_omap7xx()) {
 347                         l = omap_readl(USB_TRANSCEIVER_CTRL);
 348                         l &= ~(7 << 4);
 349                         if (!is_device)
 350                                 l |= (3 << 1);
 351                         omap_writel(l, USB_TRANSCEIVER_CTRL);
 352                 }
 353
 354                 return 3 << 16;
 355         }
 356
 357         /* alternate pin config, external transceiver */
 358         if (cpu_is_omap15xx()) {
 359                 printk(KERN_ERR "no usb0 alt pin config on 15xx\n");
 360                 return 0;
 361         }
 362
 363         omap_cfg_reg(V6_USB0_TXD);
 364         omap_cfg_reg(W9_USB0_TXEN);
 365         omap_cfg_reg(W5_USB0_SE0);
 366         if (nwires != 3)
 367                 omap_cfg_reg(Y5_USB0_RCV);
 368
 369         /* NOTE:  SPEED and SUSP aren't configured here.  OTG hosts
 370          * may be able to use I2C requests to set those bits along
 371          * with VBUS switching and overcurrent detection.
 372          */
 373
 374         if (nwires != 6) {
 375                 u32 l;
 376
 377                 l = omap_readl(USB_TRANSCEIVER_CTRL);
 378                 l &= ~CONF_USB2_UNI_R;
 379                 omap_writel(l, USB_TRANSCEIVER_CTRL);
 380         }
 381
 382         switch (nwires) {
 383         case 3:
 384                 syscon1 = 2;
 385                 break;
 386         case 4:
 387                 syscon1 = 1;
 388                 break;
 389         case 6:
 390                 syscon1 = 3;
 391                 {
 392                         u32 l;
 393
 394                         omap_cfg_reg(AA9_USB0_VP);
 395                         omap_cfg_reg(R9_USB0_VM);
 396                         l = omap_readl(USB_TRANSCEIVER_CTRL);
 397                         l |= CONF_USB2_UNI_R;
 398                         omap_writel(l, USB_TRANSCEIVER_CTRL);
 399                 }
 400                 break;
 401         default:
 402                 printk(KERN_ERR "illegal usb%d %d-wire transceiver\n",
 403                         0, nwires);
 404         }
 405
 406         return syscon1 << 16;
 407 }
 408
 409 static u32 __init omap1_usb1_init(unsigned nwires)
 410 {
 411         u32     syscon1 = 0;
 412
 413         if (!cpu_is_omap15xx() && nwires != 6) {
 414                 u32 l;
 415
 416                 l = omap_readl(USB_TRANSCEIVER_CTRL);
 417                 l &= ~CONF_USB1_UNI_R;
 418                 omap_writel(l, USB_TRANSCEIVER_CTRL);
 419         }
 420         if (nwires == 0)
 421                 return 0;
 422
 423         /* external transceiver */
 424         omap_cfg_reg(USB1_TXD);
 425         omap_cfg_reg(USB1_TXEN);
 426         if (nwires != 3)
 427                 omap_cfg_reg(USB1_RCV);
 428
 429         if (cpu_is_omap15xx()) {
 430                 omap_cfg_reg(USB1_SEO);
 431                 omap_cfg_reg(USB1_SPEED);
 432                 // SUSP
 433         } else if (cpu_is_omap1610() || cpu_is_omap5912()) {
 434                 omap_cfg_reg(W13_1610_USB1_SE0);
 435                 omap_cfg_reg(R13_1610_USB1_SPEED);
 436                 // SUSP
 437         } else if (cpu_is_omap1710()) {
 438                 omap_cfg_reg(R13_1710_USB1_SE0);
 439                 // SUSP
 440         } else {
 441                 pr_debug("usb%d cpu unrecognized\n", 1);
 442                 return 0;
 443         }
 444
 445         switch (nwires) {
 446         case 2:
 447                 goto bad;
 448         case 3:
 449                 syscon1 = 2;
 450                 break;
 451         case 4:
 452                 syscon1 = 1;
 453                 break;
 454         case 6:
 455                 syscon1 = 3;
 456                 omap_cfg_reg(USB1_VP);
 457                 omap_cfg_reg(USB1_VM);
 458                 if (!cpu_is_omap15xx()) {
 459                         u32 l;
 460
 461                         l = omap_readl(USB_TRANSCEIVER_CTRL);
 462                         l |= CONF_USB1_UNI_R;
 463                         omap_writel(l, USB_TRANSCEIVER_CTRL);
 464                 }
 465                 break;
 466         default:
 467 bad:
 468                 printk(KERN_ERR "illegal usb%d %d-wire transceiver\n",
 469                         1, nwires);
 470         }
 471
 472         return syscon1 << 20;
 473 }
 474
 475 static u32 __init omap1_usb2_init(unsigned nwires, unsigned alt_pingroup)
 476 {
 477         u32     syscon1 = 0;
 478
 479         /* NOTE omap1 erratum: must leave USB2_UNI_R set if usb0 in use */
 480         if (alt_pingroup || nwires == 0)
 481                 return 0;
 482
 483         if (!cpu_is_omap15xx() && nwires != 6) {
 484                 u32 l;
 485
 486                 l = omap_readl(USB_TRANSCEIVER_CTRL);
 487                 l &= ~CONF_USB2_UNI_R;
 488                 omap_writel(l, USB_TRANSCEIVER_CTRL);
 489         }
 490
 491         /* external transceiver */
 492         if (cpu_is_omap15xx()) {
 493                 omap_cfg_reg(USB2_TXD);
 494                 omap_cfg_reg(USB2_TXEN);
 495                 omap_cfg_reg(USB2_SEO);
 496                 if (nwires != 3)
 497                         omap_cfg_reg(USB2_RCV);
 498                 /* there is no USB2_SPEED */
 499         } else if (cpu_is_omap16xx()) {
 500                 omap_cfg_reg(V6_USB2_TXD);
 501                 omap_cfg_reg(W9_USB2_TXEN);
 502                 omap_cfg_reg(W5_USB2_SE0);
 503                 if (nwires != 3)
 504                         omap_cfg_reg(Y5_USB2_RCV);
 505                 // FIXME omap_cfg_reg(USB2_SPEED);
 506         } else {
 507                 pr_debug("usb%d cpu unrecognized\n", 1);
 508                 return 0;
 509         }
 510
 511         // omap_cfg_reg(USB2_SUSP);
 512
 513         switch (nwires) {
 514         case 2:
 515                 goto bad;
 516         case 3:
 517                 syscon1 = 2;
 518                 break;
 519         case 4:
 520                 syscon1 = 1;
 521                 break;
 522         case 5:
 523                 goto bad;
 524         case 6:
 525                 syscon1 = 3;
 526                 if (cpu_is_omap15xx()) {
 527                         omap_cfg_reg(USB2_VP);
 528                         omap_cfg_reg(USB2_VM);
 529                 } else {
 530                         u32 l;
 531
 532                         omap_cfg_reg(AA9_USB2_VP);
 533                         omap_cfg_reg(R9_USB2_VM);
 534                         l = omap_readl(USB_TRANSCEIVER_CTRL);
 535                         l |= CONF_USB2_UNI_R;
 536                         omap_writel(l, USB_TRANSCEIVER_CTRL);
 537                 }
 538                 break;
 539         default:
 540 bad:
 541                 printk(KERN_ERR "illegal usb%d %d-wire transceiver\n",
 542                         2, nwires);
 543         }
 544
 545         return syscon1 << 24;
 546 }
 547
 548 #ifdef  CONFIG_ARCH_OMAP15XX
 549
 550 /* ULPD_DPLL_CTRL */
 551 #define DPLL_IOB                (1 << 13)
 552 #define DPLL_PLL_ENABLE         (1 << 4)
 553 #define DPLL_LOCK               (1 << 0)
 554
 555 /* ULPD_APLL_CTRL */
 556 #define APLL_NDPLL_SWITCH       (1 << 0)
 557
 558 static void __init omap_1510_usb_init(struct omap_usb_config *config)
 559 {
 560         unsigned int val;
 561         u16 w;
 562
 563         config->usb0_init(config->pins[0], is_usb0_device(config));
 564         config->usb1_init(config->pins[1]);
 565         config->usb2_init(config->pins[2], 0);
 566
 567         val = omap_readl(MOD_CONF_CTRL_0) & ~(0x3f << 1);
 568         val |= (config->hmc_mode << 1);
 569         omap_writel(val, MOD_CONF_CTRL_0);
 570
 571         printk("USB: hmc %d", config->hmc_mode);
 572         if (config->pins[0])
 573                 pr_cont(", usb0 %d wires%s", config->pins[0],
 574                         is_usb0_device(config) ? " (dev)" : "");
 575         if (config->pins[1])
 576                 pr_cont(", usb1 %d wires", config->pins[1]);
 577         if (config->pins[2])
 578                 pr_cont(", usb2 %d wires", config->pins[2]);
 579         pr_cont("\n");
 580
 581         /* use DPLL for 48 MHz function clock */
 582         pr_debug("APLL %04x DPLL %04x REQ %04x\n", omap_readw(ULPD_APLL_CTRL),
 583                         omap_readw(ULPD_DPLL_CTRL), omap_readw(ULPD_SOFT_REQ));
 584
 585         w = omap_readw(ULPD_APLL_CTRL);
 586         w &= ~APLL_NDPLL_SWITCH;
 587         omap_writew(w, ULPD_APLL_CTRL);
 588
 589         w = omap_readw(ULPD_DPLL_CTRL);
 590         w |= DPLL_IOB | DPLL_PLL_ENABLE;
 591         omap_writew(w, ULPD_DPLL_CTRL);
 592
 593         w = omap_readw(ULPD_SOFT_REQ);
 594         w |= SOFT_UDC_REQ | SOFT_DPLL_REQ;
 595         omap_writew(w, ULPD_SOFT_REQ);
 596
 597         while (!(omap_readw(ULPD_DPLL_CTRL) & DPLL_LOCK))
 598                 cpu_relax();
 599
 600 #if IS_ENABLED(CONFIG_USB_OMAP)
 601         if (config->register_dev) {
 602                 int status;
 603
 604                 udc_device.dev.platform_data = config;
 605                 status = platform_device_register(&udc_device);
 606                 if (status)
 607                         pr_debug("can't register UDC device, %d\n", status);
 608                 /* udc driver gates 48MHz by D+ pullup */
 609         }
 610 #endif
 611
 612 #if     IS_ENABLED(CONFIG_USB_OHCI_HCD)
 613         if (config->register_host) {
 614                 int status;
 615
 616                 ohci_device.dev.platform_data = config;
 617                 status = platform_device_register(&ohci_device);
 618                 if (status)
 619                         pr_debug("can't register OHCI device, %d\n", status);
 620                 /* hcd explicitly gates 48MHz */
 621         }
 622 #endif
 623 }
 624
 625 #else
 626 static inline void omap_1510_usb_init(struct omap_usb_config *config) {}
 627 #endif
 628
 629 void __init omap1_usb_init(struct omap_usb_config *_pdata)
 630 {
 631         struct omap_usb_config *pdata;
 632
 633         pdata = kmemdup(_pdata, sizeof(*pdata), GFP_KERNEL);
 634         if (!pdata)
 635                 return;
 636
 637         pdata->usb0_init = omap1_usb0_init;
 638         pdata->usb1_init = omap1_usb1_init;
 639         pdata->usb2_init = omap1_usb2_init;
 640         udc_device_init(pdata);
 641         ohci_device_init(pdata);
 642         otg_device_init(pdata);
 643
 644         if (cpu_is_omap7xx() || cpu_is_omap16xx())
 645                 omap_otg_init(pdata);
 646         else if (cpu_is_omap15xx())
 647                 omap_1510_usb_init(pdata);
 648         else
 649                 printk(KERN_ERR "USB: No init for your chip yet\n");
 650 }