1 /* 2 * linux/arch/arm/mach-omap1/devices.c 3 * 4 * OMAP1 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 12 #include <linux/dma-mapping.h> 13 #include <linux/gpio.h> 14 #include <linux/module.h> 15 #include <linux/kernel.h> 16 #include <linux/init.h> 17 #include <linux/platform_device.h> 18 #include <linux/spi/spi.h> 19 20 #include <linux/platform_data/omap-wd-timer.h> 21 22 #include <asm/mach/map.h> 23 24 #include <mach/tc.h> 25 #include <mach/mux.h> 26 27 #include <mach/omap7xx.h> 28 #include <mach/camera.h> 29 #include <mach/hardware.h> 30 31 #include "common.h" 32 #include "clock.h" 33 #include "mmc.h" 34 #include "sram.h" 35 36 #if defined(CONFIG_SND_SOC) || defined(CONFIG_SND_SOC_MODULE) 37 38 static struct platform_device omap_pcm = { 39 .name = "omap-pcm-audio", 40 .id = -1, 41 }; 42 43 static void omap_init_audio(void) 44 { 45 platform_device_register(&omap_pcm); 46 } 47 48 #else 49 static inline void omap_init_audio(void) {} 50 #endif 51 52 /*-------------------------------------------------------------------------*/ 53 54 #if defined(CONFIG_RTC_DRV_OMAP) || defined(CONFIG_RTC_DRV_OMAP_MODULE) 55 56 #define OMAP_RTC_BASE 0xfffb4800 57 58 static struct resource rtc_resources[] = { 59 { 60 .start = OMAP_RTC_BASE, 61 .end = OMAP_RTC_BASE + 0x5f, 62 .flags = IORESOURCE_MEM, 63 }, 64 { 65 .start = INT_RTC_TIMER, 66 .flags = IORESOURCE_IRQ, 67 }, 68 { 69 .start = INT_RTC_ALARM, 70 .flags = IORESOURCE_IRQ, 71 }, 72 }; 73 74 static struct platform_device omap_rtc_device = { 75 .name = "omap_rtc", 76 .id = -1, 77 .num_resources = ARRAY_SIZE(rtc_resources), 78 .resource = rtc_resources, 79 }; 80 81 static void omap_init_rtc(void) 82 { 83 (void) platform_device_register(&omap_rtc_device); 84 } 85 #else 86 static inline void omap_init_rtc(void) {} 87 #endif 88 89 static inline void omap_init_mbox(void) { } 90 91 /*-------------------------------------------------------------------------*/ 92 93 #if defined(CONFIG_MMC_OMAP) || defined(CONFIG_MMC_OMAP_MODULE) 94 95 static inline void omap1_mmc_mux(struct omap_mmc_platform_data *mmc_controller, 96 int controller_nr) 97 { 98 if (controller_nr == 0) { 99 if (cpu_is_omap7xx()) { 100 omap_cfg_reg(MMC_7XX_CMD); 101 omap_cfg_reg(MMC_7XX_CLK); 102 omap_cfg_reg(MMC_7XX_DAT0); 103 } else { 104 omap_cfg_reg(MMC_CMD); 105 omap_cfg_reg(MMC_CLK); 106 omap_cfg_reg(MMC_DAT0); 107 } 108 109 if (cpu_is_omap1710()) { 110 omap_cfg_reg(M15_1710_MMC_CLKI); 111 omap_cfg_reg(P19_1710_MMC_CMDDIR); 112 omap_cfg_reg(P20_1710_MMC_DATDIR0); 113 } 114 if (mmc_controller->slots[0].wires == 4 && !cpu_is_omap7xx()) { 115 omap_cfg_reg(MMC_DAT1); 116 /* NOTE: DAT2 can be on W10 (here) or M15 */ 117 if (!mmc_controller->slots[0].nomux) 118 omap_cfg_reg(MMC_DAT2); 119 omap_cfg_reg(MMC_DAT3); 120 } 121 } 122 123 /* Block 2 is on newer chips, and has many pinout options */ 124 if (cpu_is_omap16xx() && controller_nr == 1) { 125 if (!mmc_controller->slots[1].nomux) { 126 omap_cfg_reg(Y8_1610_MMC2_CMD); 127 omap_cfg_reg(Y10_1610_MMC2_CLK); 128 omap_cfg_reg(R18_1610_MMC2_CLKIN); 129 omap_cfg_reg(W8_1610_MMC2_DAT0); 130 if (mmc_controller->slots[1].wires == 4) { 131 omap_cfg_reg(V8_1610_MMC2_DAT1); 132 omap_cfg_reg(W15_1610_MMC2_DAT2); 133 omap_cfg_reg(R10_1610_MMC2_DAT3); 134 } 135 136 /* These are needed for the level shifter */ 137 omap_cfg_reg(V9_1610_MMC2_CMDDIR); 138 omap_cfg_reg(V5_1610_MMC2_DATDIR0); 139 omap_cfg_reg(W19_1610_MMC2_DATDIR1); 140 } 141 142 /* Feedback clock must be set on OMAP-1710 MMC2 */ 143 if (cpu_is_omap1710()) 144 omap_writel(omap_readl(MOD_CONF_CTRL_1) | (1 << 24), 145 MOD_CONF_CTRL_1); 146 } 147 } 148 149 #define OMAP_MMC_NR_RES 4 150 151 /* 152 * Register MMC devices. 153 */ 154 static int __init omap_mmc_add(const char *name, int id, unsigned long base, 155 unsigned long size, unsigned int irq, 156 unsigned rx_req, unsigned tx_req, 157 struct omap_mmc_platform_data *data) 158 { 159 struct platform_device *pdev; 160 struct resource res[OMAP_MMC_NR_RES]; 161 int ret; 162 163 pdev = platform_device_alloc(name, id); 164 if (!pdev) 165 return -ENOMEM; 166 167 memset(res, 0, OMAP_MMC_NR_RES * sizeof(struct resource)); 168 res[0].start = base; 169 res[0].end = base + size - 1; 170 res[0].flags = IORESOURCE_MEM; 171 res[1].start = res[1].end = irq; 172 res[1].flags = IORESOURCE_IRQ; 173 res[2].start = rx_req; 174 res[2].name = "rx"; 175 res[2].flags = IORESOURCE_DMA; 176 res[3].start = tx_req; 177 res[3].name = "tx"; 178 res[3].flags = IORESOURCE_DMA; 179 180 if (cpu_is_omap7xx()) 181 data->slots[0].features = MMC_OMAP7XX; 182 if (cpu_is_omap15xx()) 183 data->slots[0].features = MMC_OMAP15XX; 184 if (cpu_is_omap16xx()) 185 data->slots[0].features = MMC_OMAP16XX; 186 187 ret = platform_device_add_resources(pdev, res, ARRAY_SIZE(res)); 188 if (ret == 0) 189 ret = platform_device_add_data(pdev, data, sizeof(*data)); 190 if (ret) 191 goto fail; 192 193 ret = platform_device_add(pdev); 194 if (ret) 195 goto fail; 196 197 /* return device handle to board setup code */ 198 data->dev = &pdev->dev; 199 return 0; 200 201 fail: 202 platform_device_put(pdev); 203 return ret; 204 } 205 206 void __init omap1_init_mmc(struct omap_mmc_platform_data **mmc_data, 207 int nr_controllers) 208 { 209 int i; 210 211 for (i = 0; i < nr_controllers; i++) { 212 unsigned long base, size; 213 unsigned rx_req, tx_req; 214 unsigned int irq = 0; 215 216 if (!mmc_data[i]) 217 continue; 218 219 omap1_mmc_mux(mmc_data[i], i); 220 221 switch (i) { 222 case 0: 223 base = OMAP1_MMC1_BASE; 224 irq = INT_MMC; 225 rx_req = 22; 226 tx_req = 21; 227 break; 228 case 1: 229 if (!cpu_is_omap16xx()) 230 return; 231 base = OMAP1_MMC2_BASE; 232 irq = INT_1610_MMC2; 233 rx_req = 55; 234 tx_req = 54; 235 break; 236 default: 237 continue; 238 } 239 size = OMAP1_MMC_SIZE; 240 241 omap_mmc_add("mmci-omap", i, base, size, irq, 242 rx_req, tx_req, mmc_data[i]); 243 } 244 } 245 246 #endif 247 248 /*-------------------------------------------------------------------------*/ 249 250 /* OMAP7xx SPI support */ 251 #if defined(CONFIG_SPI_OMAP_100K) || defined(CONFIG_SPI_OMAP_100K_MODULE) 252 253 struct platform_device omap_spi1 = { 254 .name = "omap1_spi100k", 255 .id = 1, 256 }; 257 258 struct platform_device omap_spi2 = { 259 .name = "omap1_spi100k", 260 .id = 2, 261 }; 262 263 static void omap_init_spi100k(void) 264 { 265 omap_spi1.dev.platform_data = ioremap(OMAP7XX_SPI1_BASE, 0x7ff); 266 if (omap_spi1.dev.platform_data) 267 platform_device_register(&omap_spi1); 268 269 omap_spi2.dev.platform_data = ioremap(OMAP7XX_SPI2_BASE, 0x7ff); 270 if (omap_spi2.dev.platform_data) 271 platform_device_register(&omap_spi2); 272 } 273 274 #else 275 static inline void omap_init_spi100k(void) 276 { 277 } 278 #endif 279 280 281 #define OMAP1_CAMERA_BASE 0xfffb6800 282 #define OMAP1_CAMERA_IOSIZE 0x1c 283 284 static struct resource omap1_camera_resources[] = { 285 [0] = { 286 .start = OMAP1_CAMERA_BASE, 287 .end = OMAP1_CAMERA_BASE + OMAP1_CAMERA_IOSIZE - 1, 288 .flags = IORESOURCE_MEM, 289 }, 290 [1] = { 291 .start = INT_CAMERA, 292 .flags = IORESOURCE_IRQ, 293 }, 294 }; 295 296 static u64 omap1_camera_dma_mask = DMA_BIT_MASK(32); 297 298 static struct platform_device omap1_camera_device = { 299 .name = "omap1-camera", 300 .id = 0, /* This is used to put cameras on this interface */ 301 .dev = { 302 .dma_mask = &omap1_camera_dma_mask, 303 .coherent_dma_mask = DMA_BIT_MASK(32), 304 }, 305 .num_resources = ARRAY_SIZE(omap1_camera_resources), 306 .resource = omap1_camera_resources, 307 }; 308 309 void __init omap1_camera_init(void *info) 310 { 311 struct platform_device *dev = &omap1_camera_device; 312 int ret; 313 314 dev->dev.platform_data = info; 315 316 ret = platform_device_register(dev); 317 if (ret) 318 dev_err(&dev->dev, "unable to register device: %d\n", ret); 319 } 320 321 322 /*-------------------------------------------------------------------------*/ 323 324 static inline void omap_init_sti(void) {} 325 326 /* Numbering for the SPI-capable controllers when used for SPI: 327 * spi = 1 328 * uwire = 2 329 * mmc1..2 = 3..4 330 * mcbsp1..3 = 5..7 331 */ 332 333 #if defined(CONFIG_SPI_OMAP_UWIRE) || defined(CONFIG_SPI_OMAP_UWIRE_MODULE) 334 335 #define OMAP_UWIRE_BASE 0xfffb3000 336 337 static struct resource uwire_resources[] = { 338 { 339 .start = OMAP_UWIRE_BASE, 340 .end = OMAP_UWIRE_BASE + 0x20, 341 .flags = IORESOURCE_MEM, 342 }, 343 }; 344 345 static struct platform_device omap_uwire_device = { 346 .name = "omap_uwire", 347 .id = -1, 348 .num_resources = ARRAY_SIZE(uwire_resources), 349 .resource = uwire_resources, 350 }; 351 352 static void omap_init_uwire(void) 353 { 354 /* FIXME define and use a boot tag; not all boards will be hooking 355 * up devices to the microwire controller, and multi-board configs 356 * mean that CONFIG_SPI_OMAP_UWIRE may be configured anyway... 357 */ 358 359 /* board-specific code must configure chipselects (only a few 360 * are normally used) and SCLK/SDI/SDO (each has two choices). 361 */ 362 (void) platform_device_register(&omap_uwire_device); 363 } 364 #else 365 static inline void omap_init_uwire(void) {} 366 #endif 367 368 369 #define OMAP1_RNG_BASE 0xfffe5000 370 371 static struct resource omap1_rng_resources[] = { 372 { 373 .start = OMAP1_RNG_BASE, 374 .end = OMAP1_RNG_BASE + 0x4f, 375 .flags = IORESOURCE_MEM, 376 }, 377 }; 378 379 static struct platform_device omap1_rng_device = { 380 .name = "omap_rng", 381 .id = -1, 382 .num_resources = ARRAY_SIZE(omap1_rng_resources), 383 .resource = omap1_rng_resources, 384 }; 385 386 static void omap1_init_rng(void) 387 { 388 if (!cpu_is_omap16xx()) 389 return; 390 391 (void) platform_device_register(&omap1_rng_device); 392 } 393 394 /*-------------------------------------------------------------------------*/ 395 396 /* 397 * This gets called after board-specific INIT_MACHINE, and initializes most 398 * on-chip peripherals accessible on this board (except for few like USB): 399 * 400 * (a) Does any "standard config" pin muxing needed. Board-specific 401 * code will have muxed GPIO pins and done "nonstandard" setup; 402 * that code could live in the boot loader. 403 * (b) Populating board-specific platform_data with the data drivers 404 * rely on to handle wiring variations. 405 * (c) Creating platform devices as meaningful on this board and 406 * with this kernel configuration. 407 * 408 * Claiming GPIOs, and setting their direction and initial values, is the 409 * responsibility of the device drivers. So is responding to probe(). 410 * 411 * Board-specific knowledge like creating devices or pin setup is to be 412 * kept out of drivers as much as possible. In particular, pin setup 413 * may be handled by the boot loader, and drivers should expect it will 414 * normally have been done by the time they're probed. 415 */ 416 static int __init omap1_init_devices(void) 417 { 418 if (!cpu_class_is_omap1()) 419 return -ENODEV; 420 421 omap_sram_init(); 422 omap1_clk_late_init(); 423 424 /* please keep these calls, and their implementations above, 425 * in alphabetical order so they're easier to sort through. 426 */ 427 428 omap_init_audio(); 429 omap_init_mbox(); 430 omap_init_rtc(); 431 omap_init_spi100k(); 432 omap_init_sti(); 433 omap_init_uwire(); 434 omap1_init_rng(); 435 436 return 0; 437 } 438 arch_initcall(omap1_init_devices); 439 440 #if defined(CONFIG_OMAP_WATCHDOG) || defined(CONFIG_OMAP_WATCHDOG_MODULE) 441 442 static struct resource wdt_resources[] = { 443 { 444 .start = 0xfffeb000, 445 .end = 0xfffeb07F, 446 .flags = IORESOURCE_MEM, 447 }, 448 }; 449 450 static struct platform_device omap_wdt_device = { 451 .name = "omap_wdt", 452 .id = -1, 453 .num_resources = ARRAY_SIZE(wdt_resources), 454 .resource = wdt_resources, 455 }; 456 457 static int __init omap_init_wdt(void) 458 { 459 struct omap_wd_timer_platform_data pdata; 460 int ret; 461 462 if (!cpu_is_omap16xx()) 463 return -ENODEV; 464 465 pdata.read_reset_sources = omap1_get_reset_sources; 466 467 ret = platform_device_register(&omap_wdt_device); 468 if (!ret) { 469 ret = platform_device_add_data(&omap_wdt_device, &pdata, 470 sizeof(pdata)); 471 if (ret) 472 platform_device_del(&omap_wdt_device); 473 } 474 475 return ret; 476 } 477 subsys_initcall(omap_init_wdt); 478 #endif 479