arch/arm/mach-omap2/devices.c

   1 /*
   2  * linux/arch/arm/mach-omap2/devices.c
   3  *
   4  * OMAP2 platform device setup/initialization
   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 #include <linux/gpio.h>
  12 #include <linux/kernel.h>
  13 #include <linux/init.h>
  14 #include <linux/platform_device.h>
  15 #include <linux/io.h>
  16 #include <linux/clk.h>
  17 #include <linux/err.h>
  18 #include <linux/slab.h>
  19 #include <linux/of.h>
  20 #include <linux/platform_data/omap4-keypad.h>
  21
  22 #include <asm/mach-types.h>
  23 #include <asm/mach/map.h>
  24
  25 #include "iomap.h"
  26 #include <plat/dma.h>
  27 #include <plat/omap_hwmod.h>
  28 #include <plat/omap_device.h>
  29 #include <plat/omap4-keypad.h>
  30
  31 #include "soc.h"
  32 #include "common.h"
  33 #include "mux.h"
  34 #include "control.h"
  35 #include "devices.h"
  36
  37 #define L3_MODULES_MAX_LEN 12
  38 #define L3_MODULES 3
  39
  40 static int __init omap3_l3_init(void)
  41 {
  42         struct omap_hwmod *oh;
  43         struct platform_device *pdev;
  44         char oh_name[L3_MODULES_MAX_LEN];
  45
  46         /*
  47          * To avoid code running on other OMAPs in
  48          * multi-omap builds
  49          */
  50         if (!(cpu_is_omap34xx()))
  51                 return -ENODEV;
  52
  53         snprintf(oh_name, L3_MODULES_MAX_LEN, "l3_main");
  54
  55         oh = omap_hwmod_lookup(oh_name);
  56
  57         if (!oh)
  58                 pr_err("could not look up %s\n", oh_name);
  59
  60         pdev = omap_device_build("omap_l3_smx", 0, oh, NULL, 0,
  61                                                            NULL, 0, 0);
  62
  63         WARN(IS_ERR(pdev), "could not build omap_device for %s\n", oh_name);
  64
  65         return IS_ERR(pdev) ? PTR_ERR(pdev) : 0;
  66 }
  67 postcore_initcall(omap3_l3_init);
  68
  69 static int __init omap4_l3_init(void)
  70 {
  71         int i;
  72         struct omap_hwmod *oh[3];
  73         struct platform_device *pdev;
  74         char oh_name[L3_MODULES_MAX_LEN];
  75
  76         /* If dtb is there, the devices will be created dynamically */
  77         if (of_have_populated_dt())
  78                 return -ENODEV;
  79
  80         /*
  81          * To avoid code running on other OMAPs in
  82          * multi-omap builds
  83          */
  84         if (!cpu_is_omap44xx() && !soc_is_omap54xx())
  85                 return -ENODEV;
  86
  87         for (i = 0; i < L3_MODULES; i++) {
  88                 snprintf(oh_name, L3_MODULES_MAX_LEN, "l3_main_%d", i+1);
  89
  90                 oh[i] = omap_hwmod_lookup(oh_name);
  91                 if (!(oh[i]))
  92                         pr_err("could not look up %s\n", oh_name);
  93         }
  94
  95         pdev = omap_device_build_ss("omap_l3_noc", 0, oh, 3, NULL,
  96                                                      0, NULL, 0, 0);
  97
  98         WARN(IS_ERR(pdev), "could not build omap_device for %s\n", oh_name);
  99
 100         return IS_ERR(pdev) ? PTR_ERR(pdev) : 0;
 101 }
 102 postcore_initcall(omap4_l3_init);
 103
 104 #if defined(CONFIG_VIDEO_OMAP2) || defined(CONFIG_VIDEO_OMAP2_MODULE)
 105
 106 static struct resource omap2cam_resources[] = {
 107         {
 108                 .start          = OMAP24XX_CAMERA_BASE,
 109                 .end            = OMAP24XX_CAMERA_BASE + 0xfff,
 110                 .flags          = IORESOURCE_MEM,
 111         },
 112         {
 113                 .start          = 24 + OMAP_INTC_START,
 114                 .flags          = IORESOURCE_IRQ,
 115         }
 116 };
 117
 118 static struct platform_device omap2cam_device = {
 119         .name           = "omap24xxcam",
 120         .id             = -1,
 121         .num_resources  = ARRAY_SIZE(omap2cam_resources),
 122         .resource       = omap2cam_resources,
 123 };
 124 #endif
 125
 126 #if defined(CONFIG_IOMMU_API)
 127
 128 #include <plat/iommu.h>
 129
 130 static struct resource omap3isp_resources[] = {
 131         {
 132                 .start          = OMAP3430_ISP_BASE,
 133                 .end            = OMAP3430_ISP_END,
 134                 .flags          = IORESOURCE_MEM,
 135         },
 136         {
 137                 .start          = OMAP3430_ISP_CCP2_BASE,
 138                 .end            = OMAP3430_ISP_CCP2_END,
 139                 .flags          = IORESOURCE_MEM,
 140         },
 141         {
 142                 .start          = OMAP3430_ISP_CCDC_BASE,
 143                 .end            = OMAP3430_ISP_CCDC_END,
 144                 .flags          = IORESOURCE_MEM,
 145         },
 146         {
 147                 .start          = OMAP3430_ISP_HIST_BASE,
 148                 .end            = OMAP3430_ISP_HIST_END,
 149                 .flags          = IORESOURCE_MEM,
 150         },
 151         {
 152                 .start          = OMAP3430_ISP_H3A_BASE,
 153                 .end            = OMAP3430_ISP_H3A_END,
 154                 .flags          = IORESOURCE_MEM,
 155         },
 156         {
 157                 .start          = OMAP3430_ISP_PREV_BASE,
 158                 .end            = OMAP3430_ISP_PREV_END,
 159                 .flags          = IORESOURCE_MEM,
 160         },
 161         {
 162                 .start          = OMAP3430_ISP_RESZ_BASE,
 163                 .end            = OMAP3430_ISP_RESZ_END,
 164                 .flags          = IORESOURCE_MEM,
 165         },
 166         {
 167                 .start          = OMAP3430_ISP_SBL_BASE,
 168                 .end            = OMAP3430_ISP_SBL_END,
 169                 .flags          = IORESOURCE_MEM,
 170         },
 171         {
 172                 .start          = OMAP3430_ISP_CSI2A_REGS1_BASE,
 173                 .end            = OMAP3430_ISP_CSI2A_REGS1_END,
 174                 .flags          = IORESOURCE_MEM,
 175         },
 176         {
 177                 .start          = OMAP3430_ISP_CSIPHY2_BASE,
 178                 .end            = OMAP3430_ISP_CSIPHY2_END,
 179                 .flags          = IORESOURCE_MEM,
 180         },
 181         {
 182                 .start          = OMAP3630_ISP_CSI2A_REGS2_BASE,
 183                 .end            = OMAP3630_ISP_CSI2A_REGS2_END,
 184                 .flags          = IORESOURCE_MEM,
 185         },
 186         {
 187                 .start          = OMAP3630_ISP_CSI2C_REGS1_BASE,
 188                 .end            = OMAP3630_ISP_CSI2C_REGS1_END,
 189                 .flags          = IORESOURCE_MEM,
 190         },
 191         {
 192                 .start          = OMAP3630_ISP_CSIPHY1_BASE,
 193                 .end            = OMAP3630_ISP_CSIPHY1_END,
 194                 .flags          = IORESOURCE_MEM,
 195         },
 196         {
 197                 .start          = OMAP3630_ISP_CSI2C_REGS2_BASE,
 198                 .end            = OMAP3630_ISP_CSI2C_REGS2_END,
 199                 .flags          = IORESOURCE_MEM,
 200         },
 201         {
 202                 .start          = 24 + OMAP_INTC_START,
 203                 .flags          = IORESOURCE_IRQ,
 204         }
 205 };
 206
 207 static struct platform_device omap3isp_device = {
 208         .name           = "omap3isp",
 209         .id             = -1,
 210         .num_resources  = ARRAY_SIZE(omap3isp_resources),
 211         .resource       = omap3isp_resources,
 212 };
 213
 214 static struct omap_iommu_arch_data omap3_isp_iommu = {
 215         .name = "isp",
 216 };
 217
 218 int omap3_init_camera(struct isp_platform_data *pdata)
 219 {
 220         omap3isp_device.dev.platform_data = pdata;
 221         omap3isp_device.dev.archdata.iommu = &omap3_isp_iommu;
 222
 223         return platform_device_register(&omap3isp_device);
 224 }
 225
 226 #else /* !CONFIG_IOMMU_API */
 227
 228 int omap3_init_camera(struct isp_platform_data *pdata)
 229 {
 230         return 0;
 231 }
 232
 233 #endif
 234
 235 static inline void omap_init_camera(void)
 236 {
 237 #if defined(CONFIG_VIDEO_OMAP2) || defined(CONFIG_VIDEO_OMAP2_MODULE)
 238         if (cpu_is_omap24xx())
 239                 platform_device_register(&omap2cam_device);
 240 #endif
 241 }
 242
 243 int __init omap4_keyboard_init(struct omap4_keypad_platform_data
 244                         *sdp4430_keypad_data, struct omap_board_data *bdata)
 245 {
 246         struct platform_device *pdev;
 247         struct omap_hwmod *oh;
 248         struct omap4_keypad_platform_data *keypad_data;
 249         unsigned int id = -1;
 250         char *oh_name = "kbd";
 251         char *name = "omap4-keypad";
 252
 253         oh = omap_hwmod_lookup(oh_name);
 254         if (!oh) {
 255                 pr_err("Could not look up %s\n", oh_name);
 256                 return -ENODEV;
 257         }
 258
 259         keypad_data = sdp4430_keypad_data;
 260
 261         pdev = omap_device_build(name, id, oh, keypad_data,
 262                         sizeof(struct omap4_keypad_platform_data), NULL, 0, 0);
 263
 264         if (IS_ERR(pdev)) {
 265                 WARN(1, "Can't build omap_device for %s:%s.\n",
 266                                                 name, oh->name);
 267                 return PTR_ERR(pdev);
 268         }
 269         oh->mux = omap_hwmod_mux_init(bdata->pads, bdata->pads_cnt);
 270
 271         return 0;
 272 }
 273
 274 #if defined(CONFIG_OMAP_MBOX_FWK) || defined(CONFIG_OMAP_MBOX_FWK_MODULE)
 275 static inline void __init omap_init_mbox(void)
 276 {
 277         struct omap_hwmod *oh;
 278         struct platform_device *pdev;
 279
 280         oh = omap_hwmod_lookup("mailbox");
 281         if (!oh) {
 282                 pr_err("%s: unable to find hwmod\n", __func__);
 283                 return;
 284         }
 285
 286         pdev = omap_device_build("omap-mailbox", -1, oh, NULL, 0, NULL, 0, 0);
 287         WARN(IS_ERR(pdev), "%s: could not build device, err %ld\n",
 288                                                 __func__, PTR_ERR(pdev));
 289 }
 290 #else
 291 static inline void omap_init_mbox(void) { }
 292 #endif /* CONFIG_OMAP_MBOX_FWK */
 293
 294 static inline void omap_init_sti(void) {}
 295
 296 #if defined(CONFIG_SND_SOC) || defined(CONFIG_SND_SOC_MODULE)
 297
 298 static struct platform_device omap_pcm = {
 299         .name   = "omap-pcm-audio",
 300         .id     = -1,
 301 };
 302
 303 static void omap_init_audio(void)
 304 {
 305         platform_device_register(&omap_pcm);
 306 }
 307
 308 #else
 309 static inline void omap_init_audio(void) {}
 310 #endif
 311
 312 #if defined(CONFIG_SND_OMAP_SOC_MCPDM) || \
 313                 defined(CONFIG_SND_OMAP_SOC_MCPDM_MODULE)
 314
 315 static void __init omap_init_mcpdm(void)
 316 {
 317         struct omap_hwmod *oh;
 318         struct platform_device *pdev;
 319
 320         oh = omap_hwmod_lookup("mcpdm");
 321         if (!oh) {
 322                 printk(KERN_ERR "Could not look up mcpdm hw_mod\n");
 323                 return;
 324         }
 325
 326         pdev = omap_device_build("omap-mcpdm", -1, oh, NULL, 0, NULL, 0, 0);
 327         WARN(IS_ERR(pdev), "Can't build omap_device for omap-mcpdm.\n");
 328 }
 329 #else
 330 static inline void omap_init_mcpdm(void) {}
 331 #endif
 332
 333 #if defined(CONFIG_SND_OMAP_SOC_DMIC) || \
 334                 defined(CONFIG_SND_OMAP_SOC_DMIC_MODULE)
 335
 336 static void __init omap_init_dmic(void)
 337 {
 338         struct omap_hwmod *oh;
 339         struct platform_device *pdev;
 340
 341         oh = omap_hwmod_lookup("dmic");
 342         if (!oh) {
 343                 printk(KERN_ERR "Could not look up mcpdm hw_mod\n");
 344                 return;
 345         }
 346
 347         pdev = omap_device_build("omap-dmic", -1, oh, NULL, 0, NULL, 0, 0);
 348         WARN(IS_ERR(pdev), "Can't build omap_device for omap-dmic.\n");
 349 }
 350 #else
 351 static inline void omap_init_dmic(void) {}
 352 #endif
 353
 354 #if defined(CONFIG_SND_OMAP_SOC_OMAP_HDMI) || \
 355                 defined(CONFIG_SND_OMAP_SOC_OMAP_HDMI_MODULE)
 356
 357 static struct platform_device omap_hdmi_audio = {
 358         .name   = "omap-hdmi-audio",
 359         .id     = -1,
 360 };
 361
 362 static void __init omap_init_hdmi_audio(void)
 363 {
 364         struct omap_hwmod *oh;
 365         struct platform_device *pdev;
 366
 367         oh = omap_hwmod_lookup("dss_hdmi");
 368         if (!oh) {
 369                 printk(KERN_ERR "Could not look up dss_hdmi hw_mod\n");
 370                 return;
 371         }
 372
 373         pdev = omap_device_build("omap-hdmi-audio-dai",
 374                 -1, oh, NULL, 0, NULL, 0, 0);
 375         WARN(IS_ERR(pdev),
 376              "Can't build omap_device for omap-hdmi-audio-dai.\n");
 377
 378         platform_device_register(&omap_hdmi_audio);
 379 }
 380 #else
 381 static inline void omap_init_hdmi_audio(void) {}
 382 #endif
 383
 384 #if defined(CONFIG_SPI_OMAP24XX) || defined(CONFIG_SPI_OMAP24XX_MODULE)
 385
 386 #include <plat/mcspi.h>
 387
 388 static int __init omap_mcspi_init(struct omap_hwmod *oh, void *unused)
 389 {
 390         struct platform_device *pdev;
 391         char *name = "omap2_mcspi";
 392         struct omap2_mcspi_platform_config *pdata;
 393         static int spi_num;
 394         struct omap2_mcspi_dev_attr *mcspi_attrib = oh->dev_attr;
 395
 396         pdata = kzalloc(sizeof(*pdata), GFP_KERNEL);
 397         if (!pdata) {
 398                 pr_err("Memory allocation for McSPI device failed\n");
 399                 return -ENOMEM;
 400         }
 401
 402         pdata->num_cs = mcspi_attrib->num_chipselect;
 403         switch (oh->class->rev) {
 404         case OMAP2_MCSPI_REV:
 405         case OMAP3_MCSPI_REV:
 406                         pdata->regs_offset = 0;
 407                         break;
 408         case OMAP4_MCSPI_REV:
 409                         pdata->regs_offset = OMAP4_MCSPI_REG_OFFSET;
 410                         break;
 411         default:
 412                         pr_err("Invalid McSPI Revision value\n");
 413                         kfree(pdata);
 414                         return -EINVAL;
 415         }
 416
 417         spi_num++;
 418         pdev = omap_device_build(name, spi_num, oh, pdata,
 419                                 sizeof(*pdata), NULL, 0, 0);
 420         WARN(IS_ERR(pdev), "Can't build omap_device for %s:%s\n",
 421                                 name, oh->name);
 422         kfree(pdata);
 423         return 0;
 424 }
 425
 426 static void omap_init_mcspi(void)
 427 {
 428         omap_hwmod_for_each_by_class("mcspi", omap_mcspi_init, NULL);
 429 }
 430
 431 #else
 432 static inline void omap_init_mcspi(void) {}
 433 #endif
 434
 435 static struct resource omap2_pmu_resource = {
 436         .start  = 3 + OMAP_INTC_START,
 437         .flags  = IORESOURCE_IRQ,
 438 };
 439
 440 static struct resource omap3_pmu_resource = {
 441         .start  = 3 + OMAP_INTC_START,
 442         .flags  = IORESOURCE_IRQ,
 443 };
 444
 445 static struct platform_device omap_pmu_device = {
 446         .name           = "arm-pmu",
 447         .id             = -1,
 448         .num_resources  = 1,
 449 };
 450
 451 static void omap_init_pmu(void)
 452 {
 453         if (cpu_is_omap24xx())
 454                 omap_pmu_device.resource = &omap2_pmu_resource;
 455         else if (cpu_is_omap34xx())
 456                 omap_pmu_device.resource = &omap3_pmu_resource;
 457         else
 458                 return;
 459
 460         platform_device_register(&omap_pmu_device);
 461 }
 462
 463
 464 #if defined(CONFIG_CRYPTO_DEV_OMAP_SHAM) || defined(CONFIG_CRYPTO_DEV_OMAP_SHAM_MODULE)
 465
 466 #ifdef CONFIG_ARCH_OMAP2
 467 static struct resource omap2_sham_resources[] = {
 468         {
 469                 .start  = OMAP24XX_SEC_SHA1MD5_BASE,
 470                 .end    = OMAP24XX_SEC_SHA1MD5_BASE + 0x64,
 471                 .flags  = IORESOURCE_MEM,
 472         },
 473         {
 474                 .start  = 51 + OMAP_INTC_START,
 475                 .flags  = IORESOURCE_IRQ,
 476         }
 477 };
 478 static int omap2_sham_resources_sz = ARRAY_SIZE(omap2_sham_resources);
 479 #else
 480 #define omap2_sham_resources            NULL
 481 #define omap2_sham_resources_sz         0
 482 #endif
 483
 484 #ifdef CONFIG_ARCH_OMAP3
 485 static struct resource omap3_sham_resources[] = {
 486         {
 487                 .start  = OMAP34XX_SEC_SHA1MD5_BASE,
 488                 .end    = OMAP34XX_SEC_SHA1MD5_BASE + 0x64,
 489                 .flags  = IORESOURCE_MEM,
 490         },
 491         {
 492                 .start  = 49 + OMAP_INTC_START,
 493                 .flags  = IORESOURCE_IRQ,
 494         },
 495         {
 496                 .start  = OMAP34XX_DMA_SHA1MD5_RX,
 497                 .flags  = IORESOURCE_DMA,
 498         }
 499 };
 500 static int omap3_sham_resources_sz = ARRAY_SIZE(omap3_sham_resources);
 501 #else
 502 #define omap3_sham_resources            NULL
 503 #define omap3_sham_resources_sz         0
 504 #endif
 505
 506 static struct platform_device sham_device = {
 507         .name           = "omap-sham",
 508         .id             = -1,
 509 };
 510
 511 static void omap_init_sham(void)
 512 {
 513         if (cpu_is_omap24xx()) {
 514                 sham_device.resource = omap2_sham_resources;
 515                 sham_device.num_resources = omap2_sham_resources_sz;
 516         } else if (cpu_is_omap34xx()) {
 517                 sham_device.resource = omap3_sham_resources;
 518                 sham_device.num_resources = omap3_sham_resources_sz;
 519         } else {
 520                 pr_err("%s: platform not supported\n", __func__);
 521                 return;
 522         }
 523         platform_device_register(&sham_device);
 524 }
 525 #else
 526 static inline void omap_init_sham(void) { }
 527 #endif
 528
 529 #if defined(CONFIG_CRYPTO_DEV_OMAP_AES) || defined(CONFIG_CRYPTO_DEV_OMAP_AES_MODULE)
 530
 531 #ifdef CONFIG_ARCH_OMAP2
 532 static struct resource omap2_aes_resources[] = {
 533         {
 534                 .start  = OMAP24XX_SEC_AES_BASE,
 535                 .end    = OMAP24XX_SEC_AES_BASE + 0x4C,
 536                 .flags  = IORESOURCE_MEM,
 537         },
 538         {
 539                 .start  = OMAP24XX_DMA_AES_TX,
 540                 .flags  = IORESOURCE_DMA,
 541         },
 542         {
 543                 .start  = OMAP24XX_DMA_AES_RX,
 544                 .flags  = IORESOURCE_DMA,
 545         }
 546 };
 547 static int omap2_aes_resources_sz = ARRAY_SIZE(omap2_aes_resources);
 548 #else
 549 #define omap2_aes_resources             NULL
 550 #define omap2_aes_resources_sz          0
 551 #endif
 552
 553 #ifdef CONFIG_ARCH_OMAP3
 554 static struct resource omap3_aes_resources[] = {
 555         {
 556                 .start  = OMAP34XX_SEC_AES_BASE,
 557                 .end    = OMAP34XX_SEC_AES_BASE + 0x4C,
 558                 .flags  = IORESOURCE_MEM,
 559         },
 560         {
 561                 .start  = OMAP34XX_DMA_AES2_TX,
 562                 .flags  = IORESOURCE_DMA,
 563         },
 564         {
 565                 .start  = OMAP34XX_DMA_AES2_RX,
 566                 .flags  = IORESOURCE_DMA,
 567         }
 568 };
 569 static int omap3_aes_resources_sz = ARRAY_SIZE(omap3_aes_resources);
 570 #else
 571 #define omap3_aes_resources             NULL
 572 #define omap3_aes_resources_sz          0
 573 #endif
 574
 575 static struct platform_device aes_device = {
 576         .name           = "omap-aes",
 577         .id             = -1,
 578 };
 579
 580 static void omap_init_aes(void)
 581 {
 582         if (cpu_is_omap24xx()) {
 583                 aes_device.resource = omap2_aes_resources;
 584                 aes_device.num_resources = omap2_aes_resources_sz;
 585         } else if (cpu_is_omap34xx()) {
 586                 aes_device.resource = omap3_aes_resources;
 587                 aes_device.num_resources = omap3_aes_resources_sz;
 588         } else {
 589                 pr_err("%s: platform not supported\n", __func__);
 590                 return;
 591         }
 592         platform_device_register(&aes_device);
 593 }
 594
 595 #else
 596 static inline void omap_init_aes(void) { }
 597 #endif
 598
 599 /*-------------------------------------------------------------------------*/
 600
 601 #if defined(CONFIG_VIDEO_OMAP2_VOUT) || \
 602         defined(CONFIG_VIDEO_OMAP2_VOUT_MODULE)
 603 #if defined(CONFIG_FB_OMAP2) || defined(CONFIG_FB_OMAP2_MODULE)
 604 static struct resource omap_vout_resource[3 - CONFIG_FB_OMAP2_NUM_FBS] = {
 605 };
 606 #else
 607 static struct resource omap_vout_resource[2] = {
 608 };
 609 #endif
 610
 611 static struct platform_device omap_vout_device = {
 612         .name           = "omap_vout",
 613         .num_resources  = ARRAY_SIZE(omap_vout_resource),
 614         .resource       = &omap_vout_resource[0],
 615         .id             = -1,
 616 };
 617 static void omap_init_vout(void)
 618 {
 619         if (platform_device_register(&omap_vout_device) < 0)
 620                 printk(KERN_ERR "Unable to register OMAP-VOUT device\n");
 621 }
 622 #else
 623 static inline void omap_init_vout(void) {}
 624 #endif
 625
 626 /*-------------------------------------------------------------------------*/
 627
 628 static int __init omap2_init_devices(void)
 629 {
 630         /*
 631          * please keep these calls, and their implementations above,
 632          * in alphabetical order so they're easier to sort through.
 633          */
 634         omap_init_audio();
 635         omap_init_camera();
 636         omap_init_hdmi_audio();
 637         omap_init_mbox();
 638         /* If dtb is there, the devices will be created dynamically */
 639         if (!of_have_populated_dt()) {
 640                 omap_init_dmic();
 641                 omap_init_mcpdm();
 642                 omap_init_mcspi();
 643         }
 644         omap_init_pmu();
 645         omap_init_sti();
 646         omap_init_sham();
 647         omap_init_aes();
 648         omap_init_vout();
 649
 650         return 0;
 651 }
 652 arch_initcall(omap2_init_devices);
 653
 654 #if defined(CONFIG_OMAP_WATCHDOG) || defined(CONFIG_OMAP_WATCHDOG_MODULE)
 655 static int __init omap_init_wdt(void)
 656 {
 657         int id = -1;
 658         struct platform_device *pdev;
 659         struct omap_hwmod *oh;
 660         char *oh_name = "wd_timer2";
 661         char *dev_name = "omap_wdt";
 662
 663         if (!cpu_class_is_omap2() || of_have_populated_dt())
 664                 return 0;
 665
 666         oh = omap_hwmod_lookup(oh_name);
 667         if (!oh) {
 668                 pr_err("Could not look up wd_timer%d hwmod\n", id);
 669                 return -EINVAL;
 670         }
 671
 672         pdev = omap_device_build(dev_name, id, oh, NULL, 0, NULL, 0, 0);
 673         WARN(IS_ERR(pdev), "Can't build omap_device for %s:%s.\n",
 674                                 dev_name, oh->name);
 675         return 0;
 676 }
 677 subsys_initcall(omap_init_wdt);
 678 #endif