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