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/io.h> 19 #include <linux/spi/spi.h> 20 21 #include <mach/camera.h> 22 #include <mach/hardware.h> 23 #include <asm/mach/map.h> 24 25 #include "common.h" 26 #include <plat/tc.h> 27 #include <plat/board.h> 28 #include <plat/mux.h> 29 #include <plat/mmc.h> 30 #include <plat/omap7xx.h> 31 #include <plat/mcbsp.h> 32 33 #include "clock.h" 34 35 /*-------------------------------------------------------------------------*/ 36 37 #if defined(CONFIG_RTC_DRV_OMAP) || defined(CONFIG_RTC_DRV_OMAP_MODULE) 38 39 #define OMAP_RTC_BASE 0xfffb4800 40 41 static struct resource rtc_resources[] = { 42 { 43 .start = OMAP_RTC_BASE, 44 .end = OMAP_RTC_BASE + 0x5f, 45 .flags = IORESOURCE_MEM, 46 }, 47 { 48 .start = INT_RTC_TIMER, 49 .flags = IORESOURCE_IRQ, 50 }, 51 { 52 .start = INT_RTC_ALARM, 53 .flags = IORESOURCE_IRQ, 54 }, 55 }; 56 57 static struct platform_device omap_rtc_device = { 58 .name = "omap_rtc", 59 .id = -1, 60 .num_resources = ARRAY_SIZE(rtc_resources), 61 .resource = rtc_resources, 62 }; 63 64 static void omap_init_rtc(void) 65 { 66 (void) platform_device_register(&omap_rtc_device); 67 } 68 #else 69 static inline void omap_init_rtc(void) {} 70 #endif 71 72 static inline void omap_init_mbox(void) { } 73 74 /*-------------------------------------------------------------------------*/ 75 76 #if defined(CONFIG_MMC_OMAP) || defined(CONFIG_MMC_OMAP_MODULE) 77 78 static inline void omap1_mmc_mux(struct omap_mmc_platform_data *mmc_controller, 79 int controller_nr) 80 { 81 if (controller_nr == 0) { 82 if (cpu_is_omap7xx()) { 83 omap_cfg_reg(MMC_7XX_CMD); 84 omap_cfg_reg(MMC_7XX_CLK); 85 omap_cfg_reg(MMC_7XX_DAT0); 86 } else { 87 omap_cfg_reg(MMC_CMD); 88 omap_cfg_reg(MMC_CLK); 89 omap_cfg_reg(MMC_DAT0); 90 } 91 92 if (cpu_is_omap1710()) { 93 omap_cfg_reg(M15_1710_MMC_CLKI); 94 omap_cfg_reg(P19_1710_MMC_CMDDIR); 95 omap_cfg_reg(P20_1710_MMC_DATDIR0); 96 } 97 if (mmc_controller->slots[0].wires == 4 && !cpu_is_omap7xx()) { 98 omap_cfg_reg(MMC_DAT1); 99 /* NOTE: DAT2 can be on W10 (here) or M15 */ 100 if (!mmc_controller->slots[0].nomux) 101 omap_cfg_reg(MMC_DAT2); 102 omap_cfg_reg(MMC_DAT3); 103 } 104 } 105 106 /* Block 2 is on newer chips, and has many pinout options */ 107 if (cpu_is_omap16xx() && controller_nr == 1) { 108 if (!mmc_controller->slots[1].nomux) { 109 omap_cfg_reg(Y8_1610_MMC2_CMD); 110 omap_cfg_reg(Y10_1610_MMC2_CLK); 111 omap_cfg_reg(R18_1610_MMC2_CLKIN); 112 omap_cfg_reg(W8_1610_MMC2_DAT0); 113 if (mmc_controller->slots[1].wires == 4) { 114 omap_cfg_reg(V8_1610_MMC2_DAT1); 115 omap_cfg_reg(W15_1610_MMC2_DAT2); 116 omap_cfg_reg(R10_1610_MMC2_DAT3); 117 } 118 119 /* These are needed for the level shifter */ 120 omap_cfg_reg(V9_1610_MMC2_CMDDIR); 121 omap_cfg_reg(V5_1610_MMC2_DATDIR0); 122 omap_cfg_reg(W19_1610_MMC2_DATDIR1); 123 } 124 125 /* Feedback clock must be set on OMAP-1710 MMC2 */ 126 if (cpu_is_omap1710()) 127 omap_writel(omap_readl(MOD_CONF_CTRL_1) | (1 << 24), 128 MOD_CONF_CTRL_1); 129 } 130 } 131 132 void __init omap1_init_mmc(struct omap_mmc_platform_data **mmc_data, 133 int nr_controllers) 134 { 135 int i; 136 137 for (i = 0; i < nr_controllers; i++) { 138 unsigned long base, size; 139 unsigned int irq = 0; 140 141 if (!mmc_data[i]) 142 continue; 143 144 omap1_mmc_mux(mmc_data[i], i); 145 146 switch (i) { 147 case 0: 148 base = OMAP1_MMC1_BASE; 149 irq = INT_MMC; 150 break; 151 case 1: 152 if (!cpu_is_omap16xx()) 153 return; 154 base = OMAP1_MMC2_BASE; 155 irq = INT_1610_MMC2; 156 break; 157 default: 158 continue; 159 } 160 size = OMAP1_MMC_SIZE; 161 162 omap_mmc_add("mmci-omap", i, base, size, irq, mmc_data[i]); 163 }; 164 } 165 166 #endif 167 168 /*-------------------------------------------------------------------------*/ 169 170 /* OMAP7xx SPI support */ 171 #if defined(CONFIG_SPI_OMAP_100K) || defined(CONFIG_SPI_OMAP_100K_MODULE) 172 173 struct platform_device omap_spi1 = { 174 .name = "omap1_spi100k", 175 .id = 1, 176 }; 177 178 struct platform_device omap_spi2 = { 179 .name = "omap1_spi100k", 180 .id = 2, 181 }; 182 183 static void omap_init_spi100k(void) 184 { 185 omap_spi1.dev.platform_data = ioremap(OMAP7XX_SPI1_BASE, 0x7ff); 186 if (omap_spi1.dev.platform_data) 187 platform_device_register(&omap_spi1); 188 189 omap_spi2.dev.platform_data = ioremap(OMAP7XX_SPI2_BASE, 0x7ff); 190 if (omap_spi2.dev.platform_data) 191 platform_device_register(&omap_spi2); 192 } 193 194 #else 195 static inline void omap_init_spi100k(void) 196 { 197 } 198 #endif 199 200 201 #define OMAP1_CAMERA_BASE 0xfffb6800 202 #define OMAP1_CAMERA_IOSIZE 0x1c 203 204 static struct resource omap1_camera_resources[] = { 205 [0] = { 206 .start = OMAP1_CAMERA_BASE, 207 .end = OMAP1_CAMERA_BASE + OMAP1_CAMERA_IOSIZE - 1, 208 .flags = IORESOURCE_MEM, 209 }, 210 [1] = { 211 .start = INT_CAMERA, 212 .flags = IORESOURCE_IRQ, 213 }, 214 }; 215 216 static u64 omap1_camera_dma_mask = DMA_BIT_MASK(32); 217 218 static struct platform_device omap1_camera_device = { 219 .name = "omap1-camera", 220 .id = 0, /* This is used to put cameras on this interface */ 221 .dev = { 222 .dma_mask = &omap1_camera_dma_mask, 223 .coherent_dma_mask = DMA_BIT_MASK(32), 224 }, 225 .num_resources = ARRAY_SIZE(omap1_camera_resources), 226 .resource = omap1_camera_resources, 227 }; 228 229 void __init omap1_camera_init(void *info) 230 { 231 struct platform_device *dev = &omap1_camera_device; 232 int ret; 233 234 dev->dev.platform_data = info; 235 236 ret = platform_device_register(dev); 237 if (ret) 238 dev_err(&dev->dev, "unable to register device: %d\n", ret); 239 } 240 241 242 /*-------------------------------------------------------------------------*/ 243 244 static inline void omap_init_sti(void) {} 245 246 #if defined(CONFIG_SND_SOC) || defined(CONFIG_SND_SOC_MODULE) 247 248 static struct platform_device omap_pcm = { 249 .name = "omap-pcm-audio", 250 .id = -1, 251 }; 252 253 OMAP_MCBSP_PLATFORM_DEVICE(1); 254 OMAP_MCBSP_PLATFORM_DEVICE(2); 255 OMAP_MCBSP_PLATFORM_DEVICE(3); 256 257 static void omap_init_audio(void) 258 { 259 platform_device_register(&omap_mcbsp1); 260 platform_device_register(&omap_mcbsp2); 261 if (!cpu_is_omap7xx()) 262 platform_device_register(&omap_mcbsp3); 263 platform_device_register(&omap_pcm); 264 } 265 266 #else 267 static inline void omap_init_audio(void) {} 268 #endif 269 270 /*-------------------------------------------------------------------------*/ 271 272 /* 273 * This gets called after board-specific INIT_MACHINE, and initializes most 274 * on-chip peripherals accessible on this board (except for few like USB): 275 * 276 * (a) Does any "standard config" pin muxing needed. Board-specific 277 * code will have muxed GPIO pins and done "nonstandard" setup; 278 * that code could live in the boot loader. 279 * (b) Populating board-specific platform_data with the data drivers 280 * rely on to handle wiring variations. 281 * (c) Creating platform devices as meaningful on this board and 282 * with this kernel configuration. 283 * 284 * Claiming GPIOs, and setting their direction and initial values, is the 285 * responsibility of the device drivers. So is responding to probe(). 286 * 287 * Board-specific knowledge like creating devices or pin setup is to be 288 * kept out of drivers as much as possible. In particular, pin setup 289 * may be handled by the boot loader, and drivers should expect it will 290 * normally have been done by the time they're probed. 291 */ 292 static int __init omap1_init_devices(void) 293 { 294 if (!cpu_class_is_omap1()) 295 return -ENODEV; 296 297 omap_sram_init(); 298 omap1_clk_late_init(); 299 300 /* please keep these calls, and their implementations above, 301 * in alphabetical order so they're easier to sort through. 302 */ 303 304 omap_init_mbox(); 305 omap_init_rtc(); 306 omap_init_spi100k(); 307 omap_init_sti(); 308 omap_init_audio(); 309 310 return 0; 311 } 312 arch_initcall(omap1_init_devices); 313 314 #if defined(CONFIG_OMAP_WATCHDOG) || defined(CONFIG_OMAP_WATCHDOG_MODULE) 315 316 static struct resource wdt_resources[] = { 317 { 318 .start = 0xfffeb000, 319 .end = 0xfffeb07F, 320 .flags = IORESOURCE_MEM, 321 }, 322 }; 323 324 static struct platform_device omap_wdt_device = { 325 .name = "omap_wdt", 326 .id = -1, 327 .num_resources = ARRAY_SIZE(wdt_resources), 328 .resource = wdt_resources, 329 }; 330 331 static int __init omap_init_wdt(void) 332 { 333 if (!cpu_is_omap16xx()) 334 return -ENODEV; 335 336 return platform_device_register(&omap_wdt_device); 337 } 338 subsys_initcall(omap_init_wdt); 339 #endif 340