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 "dma.h" 34 #include "mmc.h" 35 #include "sram.h" 36 37 #if defined(CONFIG_SND_SOC) || defined(CONFIG_SND_SOC_MODULE) 38 39 static struct platform_device omap_pcm = { 40 .name = "omap-pcm-audio", 41 .id = -1, 42 }; 43 44 static void omap_init_audio(void) 45 { 46 platform_device_register(&omap_pcm); 47 } 48 49 #else 50 static inline void omap_init_audio(void) {} 51 #endif 52 53 /*-------------------------------------------------------------------------*/ 54 55 #if defined(CONFIG_RTC_DRV_OMAP) || defined(CONFIG_RTC_DRV_OMAP_MODULE) 56 57 #define OMAP_RTC_BASE 0xfffb4800 58 59 static struct resource rtc_resources[] = { 60 { 61 .start = OMAP_RTC_BASE, 62 .end = OMAP_RTC_BASE + 0x5f, 63 .flags = IORESOURCE_MEM, 64 }, 65 { 66 .start = INT_RTC_TIMER, 67 .flags = IORESOURCE_IRQ, 68 }, 69 { 70 .start = INT_RTC_ALARM, 71 .flags = IORESOURCE_IRQ, 72 }, 73 }; 74 75 static struct platform_device omap_rtc_device = { 76 .name = "omap_rtc", 77 .id = -1, 78 .num_resources = ARRAY_SIZE(rtc_resources), 79 .resource = rtc_resources, 80 }; 81 82 static void omap_init_rtc(void) 83 { 84 (void) platform_device_register(&omap_rtc_device); 85 } 86 #else 87 static inline void omap_init_rtc(void) {} 88 #endif 89 90 static inline void omap_init_mbox(void) { } 91 92 /*-------------------------------------------------------------------------*/ 93 94 #if defined(CONFIG_MMC_OMAP) || defined(CONFIG_MMC_OMAP_MODULE) 95 96 static inline void omap1_mmc_mux(struct omap_mmc_platform_data *mmc_controller, 97 int controller_nr) 98 { 99 if (controller_nr == 0) { 100 if (cpu_is_omap7xx()) { 101 omap_cfg_reg(MMC_7XX_CMD); 102 omap_cfg_reg(MMC_7XX_CLK); 103 omap_cfg_reg(MMC_7XX_DAT0); 104 } else { 105 omap_cfg_reg(MMC_CMD); 106 omap_cfg_reg(MMC_CLK); 107 omap_cfg_reg(MMC_DAT0); 108 } 109 110 if (cpu_is_omap1710()) { 111 omap_cfg_reg(M15_1710_MMC_CLKI); 112 omap_cfg_reg(P19_1710_MMC_CMDDIR); 113 omap_cfg_reg(P20_1710_MMC_DATDIR0); 114 } 115 if (mmc_controller->slots[0].wires == 4 && !cpu_is_omap7xx()) { 116 omap_cfg_reg(MMC_DAT1); 117 /* NOTE: DAT2 can be on W10 (here) or M15 */ 118 if (!mmc_controller->slots[0].nomux) 119 omap_cfg_reg(MMC_DAT2); 120 omap_cfg_reg(MMC_DAT3); 121 } 122 } 123 124 /* Block 2 is on newer chips, and has many pinout options */ 125 if (cpu_is_omap16xx() && controller_nr == 1) { 126 if (!mmc_controller->slots[1].nomux) { 127 omap_cfg_reg(Y8_1610_MMC2_CMD); 128 omap_cfg_reg(Y10_1610_MMC2_CLK); 129 omap_cfg_reg(R18_1610_MMC2_CLKIN); 130 omap_cfg_reg(W8_1610_MMC2_DAT0); 131 if (mmc_controller->slots[1].wires == 4) { 132 omap_cfg_reg(V8_1610_MMC2_DAT1); 133 omap_cfg_reg(W15_1610_MMC2_DAT2); 134 omap_cfg_reg(R10_1610_MMC2_DAT3); 135 } 136 137 /* These are needed for the level shifter */ 138 omap_cfg_reg(V9_1610_MMC2_CMDDIR); 139 omap_cfg_reg(V5_1610_MMC2_DATDIR0); 140 omap_cfg_reg(W19_1610_MMC2_DATDIR1); 141 } 142 143 /* Feedback clock must be set on OMAP-1710 MMC2 */ 144 if (cpu_is_omap1710()) 145 omap_writel(omap_readl(MOD_CONF_CTRL_1) | (1 << 24), 146 MOD_CONF_CTRL_1); 147 } 148 } 149 150 #define OMAP_MMC_NR_RES 4 151 152 /* 153 * Register MMC devices. 154 */ 155 static int __init omap_mmc_add(const char *name, int id, unsigned long base, 156 unsigned long size, unsigned int irq, 157 unsigned rx_req, unsigned tx_req, 158 struct omap_mmc_platform_data *data) 159 { 160 struct platform_device *pdev; 161 struct resource res[OMAP_MMC_NR_RES]; 162 int ret; 163 164 pdev = platform_device_alloc(name, id); 165 if (!pdev) 166 return -ENOMEM; 167 168 memset(res, 0, OMAP_MMC_NR_RES * sizeof(struct resource)); 169 res[0].start = base; 170 res[0].end = base + size - 1; 171 res[0].flags = IORESOURCE_MEM; 172 res[1].start = res[1].end = irq; 173 res[1].flags = IORESOURCE_IRQ; 174 res[2].start = rx_req; 175 res[2].name = "rx"; 176 res[2].flags = IORESOURCE_DMA; 177 res[3].start = tx_req; 178 res[3].name = "tx"; 179 res[3].flags = IORESOURCE_DMA; 180 181 if (cpu_is_omap7xx()) 182 data->slots[0].features = MMC_OMAP7XX; 183 if (cpu_is_omap15xx()) 184 data->slots[0].features = MMC_OMAP15XX; 185 if (cpu_is_omap16xx()) 186 data->slots[0].features = MMC_OMAP16XX; 187 188 ret = platform_device_add_resources(pdev, res, ARRAY_SIZE(res)); 189 if (ret == 0) 190 ret = platform_device_add_data(pdev, data, sizeof(*data)); 191 if (ret) 192 goto fail; 193 194 ret = platform_device_add(pdev); 195 if (ret) 196 goto fail; 197 198 /* return device handle to board setup code */ 199 data->dev = &pdev->dev; 200 return 0; 201 202 fail: 203 platform_device_put(pdev); 204 return ret; 205 } 206 207 void __init omap1_init_mmc(struct omap_mmc_platform_data **mmc_data, 208 int nr_controllers) 209 { 210 int i; 211 212 for (i = 0; i < nr_controllers; i++) { 213 unsigned long base, size; 214 unsigned rx_req, tx_req; 215 unsigned int irq = 0; 216 217 if (!mmc_data[i]) 218 continue; 219 220 omap1_mmc_mux(mmc_data[i], i); 221 222 switch (i) { 223 case 0: 224 base = OMAP1_MMC1_BASE; 225 irq = INT_MMC; 226 rx_req = OMAP_DMA_MMC_RX; 227 tx_req = OMAP_DMA_MMC_TX; 228 break; 229 case 1: 230 if (!cpu_is_omap16xx()) 231 return; 232 base = OMAP1_MMC2_BASE; 233 irq = INT_1610_MMC2; 234 rx_req = OMAP_DMA_MMC2_RX; 235 tx_req = OMAP_DMA_MMC2_TX; 236 break; 237 default: 238 continue; 239 } 240 size = OMAP1_MMC_SIZE; 241 242 omap_mmc_add("mmci-omap", i, base, size, irq, 243 rx_req, tx_req, mmc_data[i]); 244 } 245 } 246 247 #endif 248 249 /*-------------------------------------------------------------------------*/ 250 251 /* OMAP7xx SPI support */ 252 #if defined(CONFIG_SPI_OMAP_100K) || defined(CONFIG_SPI_OMAP_100K_MODULE) 253 254 struct platform_device omap_spi1 = { 255 .name = "omap1_spi100k", 256 .id = 1, 257 }; 258 259 struct platform_device omap_spi2 = { 260 .name = "omap1_spi100k", 261 .id = 2, 262 }; 263 264 static void omap_init_spi100k(void) 265 { 266 omap_spi1.dev.platform_data = ioremap(OMAP7XX_SPI1_BASE, 0x7ff); 267 if (omap_spi1.dev.platform_data) 268 platform_device_register(&omap_spi1); 269 270 omap_spi2.dev.platform_data = ioremap(OMAP7XX_SPI2_BASE, 0x7ff); 271 if (omap_spi2.dev.platform_data) 272 platform_device_register(&omap_spi2); 273 } 274 275 #else 276 static inline void omap_init_spi100k(void) 277 { 278 } 279 #endif 280 281 282 #define OMAP1_CAMERA_BASE 0xfffb6800 283 #define OMAP1_CAMERA_IOSIZE 0x1c 284 285 static struct resource omap1_camera_resources[] = { 286 [0] = { 287 .start = OMAP1_CAMERA_BASE, 288 .end = OMAP1_CAMERA_BASE + OMAP1_CAMERA_IOSIZE - 1, 289 .flags = IORESOURCE_MEM, 290 }, 291 [1] = { 292 .start = INT_CAMERA, 293 .flags = IORESOURCE_IRQ, 294 }, 295 }; 296 297 static u64 omap1_camera_dma_mask = DMA_BIT_MASK(32); 298 299 static struct platform_device omap1_camera_device = { 300 .name = "omap1-camera", 301 .id = 0, /* This is used to put cameras on this interface */ 302 .dev = { 303 .dma_mask = &omap1_camera_dma_mask, 304 .coherent_dma_mask = DMA_BIT_MASK(32), 305 }, 306 .num_resources = ARRAY_SIZE(omap1_camera_resources), 307 .resource = omap1_camera_resources, 308 }; 309 310 void __init omap1_camera_init(void *info) 311 { 312 struct platform_device *dev = &omap1_camera_device; 313 int ret; 314 315 dev->dev.platform_data = info; 316 317 ret = platform_device_register(dev); 318 if (ret) 319 dev_err(&dev->dev, "unable to register device: %d\n", ret); 320 } 321 322 323 /*-------------------------------------------------------------------------*/ 324 325 static inline void omap_init_sti(void) {} 326 327 /* Numbering for the SPI-capable controllers when used for SPI: 328 * spi = 1 329 * uwire = 2 330 * mmc1..2 = 3..4 331 * mcbsp1..3 = 5..7 332 */ 333 334 #if defined(CONFIG_SPI_OMAP_UWIRE) || defined(CONFIG_SPI_OMAP_UWIRE_MODULE) 335 336 #define OMAP_UWIRE_BASE 0xfffb3000 337 338 static struct resource uwire_resources[] = { 339 { 340 .start = OMAP_UWIRE_BASE, 341 .end = OMAP_UWIRE_BASE + 0x20, 342 .flags = IORESOURCE_MEM, 343 }, 344 }; 345 346 static struct platform_device omap_uwire_device = { 347 .name = "omap_uwire", 348 .id = -1, 349 .num_resources = ARRAY_SIZE(uwire_resources), 350 .resource = uwire_resources, 351 }; 352 353 static void omap_init_uwire(void) 354 { 355 /* FIXME define and use a boot tag; not all boards will be hooking 356 * up devices to the microwire controller, and multi-board configs 357 * mean that CONFIG_SPI_OMAP_UWIRE may be configured anyway... 358 */ 359 360 /* board-specific code must configure chipselects (only a few 361 * are normally used) and SCLK/SDI/SDO (each has two choices). 362 */ 363 (void) platform_device_register(&omap_uwire_device); 364 } 365 #else 366 static inline void omap_init_uwire(void) {} 367 #endif 368 369 370 #define OMAP1_RNG_BASE 0xfffe5000 371 372 static struct resource omap1_rng_resources[] = { 373 { 374 .start = OMAP1_RNG_BASE, 375 .end = OMAP1_RNG_BASE + 0x4f, 376 .flags = IORESOURCE_MEM, 377 }, 378 }; 379 380 static struct platform_device omap1_rng_device = { 381 .name = "omap_rng", 382 .id = -1, 383 .num_resources = ARRAY_SIZE(omap1_rng_resources), 384 .resource = omap1_rng_resources, 385 }; 386 387 static void omap1_init_rng(void) 388 { 389 if (!cpu_is_omap16xx()) 390 return; 391 392 (void) platform_device_register(&omap1_rng_device); 393 } 394 395 /*-------------------------------------------------------------------------*/ 396 397 /* 398 * This gets called after board-specific INIT_MACHINE, and initializes most 399 * on-chip peripherals accessible on this board (except for few like USB): 400 * 401 * (a) Does any "standard config" pin muxing needed. Board-specific 402 * code will have muxed GPIO pins and done "nonstandard" setup; 403 * that code could live in the boot loader. 404 * (b) Populating board-specific platform_data with the data drivers 405 * rely on to handle wiring variations. 406 * (c) Creating platform devices as meaningful on this board and 407 * with this kernel configuration. 408 * 409 * Claiming GPIOs, and setting their direction and initial values, is the 410 * responsibility of the device drivers. So is responding to probe(). 411 * 412 * Board-specific knowledge like creating devices or pin setup is to be 413 * kept out of drivers as much as possible. In particular, pin setup 414 * may be handled by the boot loader, and drivers should expect it will 415 * normally have been done by the time they're probed. 416 */ 417 static int __init omap1_init_devices(void) 418 { 419 if (!cpu_class_is_omap1()) 420 return -ENODEV; 421 422 omap_sram_init(); 423 omap1_clk_late_init(); 424 425 /* please keep these calls, and their implementations above, 426 * in alphabetical order so they're easier to sort through. 427 */ 428 429 omap_init_audio(); 430 omap_init_mbox(); 431 omap_init_rtc(); 432 omap_init_spi100k(); 433 omap_init_sti(); 434 omap_init_uwire(); 435 omap1_init_rng(); 436 437 return 0; 438 } 439 arch_initcall(omap1_init_devices); 440 441 #if defined(CONFIG_OMAP_WATCHDOG) || defined(CONFIG_OMAP_WATCHDOG_MODULE) 442 443 static struct resource wdt_resources[] = { 444 { 445 .start = 0xfffeb000, 446 .end = 0xfffeb07F, 447 .flags = IORESOURCE_MEM, 448 }, 449 }; 450 451 static struct platform_device omap_wdt_device = { 452 .name = "omap_wdt", 453 .id = -1, 454 .num_resources = ARRAY_SIZE(wdt_resources), 455 .resource = wdt_resources, 456 }; 457 458 static int __init omap_init_wdt(void) 459 { 460 struct omap_wd_timer_platform_data pdata; 461 int ret; 462 463 if (!cpu_is_omap16xx()) 464 return -ENODEV; 465 466 pdata.read_reset_sources = omap1_get_reset_sources; 467 468 ret = platform_device_register(&omap_wdt_device); 469 if (!ret) { 470 ret = platform_device_add_data(&omap_wdt_device, &pdata, 471 sizeof(pdata)); 472 if (ret) 473 platform_device_del(&omap_wdt_device); 474 } 475 476 return ret; 477 } 478 subsys_initcall(omap_init_wdt); 479 #endif 480