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