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/module.h> 14 #include <linux/kernel.h> 15 #include <linux/init.h> 16 #include <linux/platform_device.h> 17 #include <linux/io.h> 18 #include <linux/spi/spi.h> 19 20 #include <mach/camera.h> 21 #include <mach/hardware.h> 22 #include <asm/mach/map.h> 23 24 #include <plat/tc.h> 25 #include <plat/board.h> 26 #include <plat/mux.h> 27 #include <mach/gpio.h> 28 #include <plat/mmc.h> 29 #include <plat/omap7xx.h> 30 #include <plat/mcbsp.h> 31 32 /*-------------------------------------------------------------------------*/ 33 34 #if defined(CONFIG_RTC_DRV_OMAP) || defined(CONFIG_RTC_DRV_OMAP_MODULE) 35 36 #define OMAP_RTC_BASE 0xfffb4800 37 38 static struct resource rtc_resources[] = { 39 { 40 .start = OMAP_RTC_BASE, 41 .end = OMAP_RTC_BASE + 0x5f, 42 .flags = IORESOURCE_MEM, 43 }, 44 { 45 .start = INT_RTC_TIMER, 46 .flags = IORESOURCE_IRQ, 47 }, 48 { 49 .start = INT_RTC_ALARM, 50 .flags = IORESOURCE_IRQ, 51 }, 52 }; 53 54 static struct platform_device omap_rtc_device = { 55 .name = "omap_rtc", 56 .id = -1, 57 .num_resources = ARRAY_SIZE(rtc_resources), 58 .resource = rtc_resources, 59 }; 60 61 static void omap_init_rtc(void) 62 { 63 (void) platform_device_register(&omap_rtc_device); 64 } 65 #else 66 static inline void omap_init_rtc(void) {} 67 #endif 68 69 static inline void omap_init_mbox(void) { } 70 71 /*-------------------------------------------------------------------------*/ 72 73 #if defined(CONFIG_MMC_OMAP) || defined(CONFIG_MMC_OMAP_MODULE) 74 75 static inline void omap1_mmc_mux(struct omap_mmc_platform_data *mmc_controller, 76 int controller_nr) 77 { 78 if (controller_nr == 0) { 79 if (cpu_is_omap7xx()) { 80 omap_cfg_reg(MMC_7XX_CMD); 81 omap_cfg_reg(MMC_7XX_CLK); 82 omap_cfg_reg(MMC_7XX_DAT0); 83 } else { 84 omap_cfg_reg(MMC_CMD); 85 omap_cfg_reg(MMC_CLK); 86 omap_cfg_reg(MMC_DAT0); 87 } 88 89 if (cpu_is_omap1710()) { 90 omap_cfg_reg(M15_1710_MMC_CLKI); 91 omap_cfg_reg(P19_1710_MMC_CMDDIR); 92 omap_cfg_reg(P20_1710_MMC_DATDIR0); 93 } 94 if (mmc_controller->slots[0].wires == 4 && !cpu_is_omap7xx()) { 95 omap_cfg_reg(MMC_DAT1); 96 /* NOTE: DAT2 can be on W10 (here) or M15 */ 97 if (!mmc_controller->slots[0].nomux) 98 omap_cfg_reg(MMC_DAT2); 99 omap_cfg_reg(MMC_DAT3); 100 } 101 } 102 103 /* Block 2 is on newer chips, and has many pinout options */ 104 if (cpu_is_omap16xx() && controller_nr == 1) { 105 if (!mmc_controller->slots[1].nomux) { 106 omap_cfg_reg(Y8_1610_MMC2_CMD); 107 omap_cfg_reg(Y10_1610_MMC2_CLK); 108 omap_cfg_reg(R18_1610_MMC2_CLKIN); 109 omap_cfg_reg(W8_1610_MMC2_DAT0); 110 if (mmc_controller->slots[1].wires == 4) { 111 omap_cfg_reg(V8_1610_MMC2_DAT1); 112 omap_cfg_reg(W15_1610_MMC2_DAT2); 113 omap_cfg_reg(R10_1610_MMC2_DAT3); 114 } 115 116 /* These are needed for the level shifter */ 117 omap_cfg_reg(V9_1610_MMC2_CMDDIR); 118 omap_cfg_reg(V5_1610_MMC2_DATDIR0); 119 omap_cfg_reg(W19_1610_MMC2_DATDIR1); 120 } 121 122 /* Feedback clock must be set on OMAP-1710 MMC2 */ 123 if (cpu_is_omap1710()) 124 omap_writel(omap_readl(MOD_CONF_CTRL_1) | (1 << 24), 125 MOD_CONF_CTRL_1); 126 } 127 } 128 129 void __init omap1_init_mmc(struct omap_mmc_platform_data **mmc_data, 130 int nr_controllers) 131 { 132 int i; 133 134 for (i = 0; i < nr_controllers; i++) { 135 unsigned long base, size; 136 unsigned int irq = 0; 137 138 if (!mmc_data[i]) 139 continue; 140 141 omap1_mmc_mux(mmc_data[i], i); 142 143 switch (i) { 144 case 0: 145 base = OMAP1_MMC1_BASE; 146 irq = INT_MMC; 147 break; 148 case 1: 149 if (!cpu_is_omap16xx()) 150 return; 151 base = OMAP1_MMC2_BASE; 152 irq = INT_1610_MMC2; 153 break; 154 default: 155 continue; 156 } 157 size = OMAP1_MMC_SIZE; 158 159 omap_mmc_add("mmci-omap", i, base, size, irq, mmc_data[i]); 160 }; 161 } 162 163 #endif 164 165 /*-------------------------------------------------------------------------*/ 166 167 /* OMAP7xx SPI support */ 168 #if defined(CONFIG_SPI_OMAP_100K) || defined(CONFIG_SPI_OMAP_100K_MODULE) 169 170 struct platform_device omap_spi1 = { 171 .name = "omap1_spi100k", 172 .id = 1, 173 }; 174 175 struct platform_device omap_spi2 = { 176 .name = "omap1_spi100k", 177 .id = 2, 178 }; 179 180 static void omap_init_spi100k(void) 181 { 182 omap_spi1.dev.platform_data = ioremap(OMAP7XX_SPI1_BASE, 0x7ff); 183 if (omap_spi1.dev.platform_data) 184 platform_device_register(&omap_spi1); 185 186 omap_spi2.dev.platform_data = ioremap(OMAP7XX_SPI2_BASE, 0x7ff); 187 if (omap_spi2.dev.platform_data) 188 platform_device_register(&omap_spi2); 189 } 190 191 #else 192 static inline void omap_init_spi100k(void) 193 { 194 } 195 #endif 196 197 198 #define OMAP1_CAMERA_BASE 0xfffb6800 199 #define OMAP1_CAMERA_IOSIZE 0x1c 200 201 static struct resource omap1_camera_resources[] = { 202 [0] = { 203 .start = OMAP1_CAMERA_BASE, 204 .end = OMAP1_CAMERA_BASE + OMAP1_CAMERA_IOSIZE - 1, 205 .flags = IORESOURCE_MEM, 206 }, 207 [1] = { 208 .start = INT_CAMERA, 209 .flags = IORESOURCE_IRQ, 210 }, 211 }; 212 213 static u64 omap1_camera_dma_mask = DMA_BIT_MASK(32); 214 215 static struct platform_device omap1_camera_device = { 216 .name = "omap1-camera", 217 .id = 0, /* This is used to put cameras on this interface */ 218 .dev = { 219 .dma_mask = &omap1_camera_dma_mask, 220 .coherent_dma_mask = DMA_BIT_MASK(32), 221 }, 222 .num_resources = ARRAY_SIZE(omap1_camera_resources), 223 .resource = omap1_camera_resources, 224 }; 225 226 void __init omap1_camera_init(void *info) 227 { 228 struct platform_device *dev = &omap1_camera_device; 229 int ret; 230 231 dev->dev.platform_data = info; 232 233 ret = platform_device_register(dev); 234 if (ret) 235 dev_err(&dev->dev, "unable to register device: %d\n", ret); 236 } 237 238 239 /*-------------------------------------------------------------------------*/ 240 241 static inline void omap_init_sti(void) {} 242 243 #if defined(CONFIG_SND_SOC) || defined(CONFIG_SND_SOC_MODULE) 244 245 static struct platform_device omap_pcm = { 246 .name = "omap-pcm-audio", 247 .id = -1, 248 }; 249 250 OMAP_MCBSP_PLATFORM_DEVICE(1); 251 OMAP_MCBSP_PLATFORM_DEVICE(2); 252 OMAP_MCBSP_PLATFORM_DEVICE(3); 253 254 static void omap_init_audio(void) 255 { 256 platform_device_register(&omap_mcbsp1); 257 platform_device_register(&omap_mcbsp2); 258 if (!cpu_is_omap7xx()) 259 platform_device_register(&omap_mcbsp3); 260 platform_device_register(&omap_pcm); 261 } 262 263 #else 264 static inline void omap_init_audio(void) {} 265 #endif 266 267 /*-------------------------------------------------------------------------*/ 268 269 /* 270 * This gets called after board-specific INIT_MACHINE, and initializes most 271 * on-chip peripherals accessible on this board (except for few like USB): 272 * 273 * (a) Does any "standard config" pin muxing needed. Board-specific 274 * code will have muxed GPIO pins and done "nonstandard" setup; 275 * that code could live in the boot loader. 276 * (b) Populating board-specific platform_data with the data drivers 277 * rely on to handle wiring variations. 278 * (c) Creating platform devices as meaningful on this board and 279 * with this kernel configuration. 280 * 281 * Claiming GPIOs, and setting their direction and initial values, is the 282 * responsibility of the device drivers. So is responding to probe(). 283 * 284 * Board-specific knowlege like creating devices or pin setup is to be 285 * kept out of drivers as much as possible. In particular, pin setup 286 * may be handled by the boot loader, and drivers should expect it will 287 * normally have been done by the time they're probed. 288 */ 289 static int __init omap1_init_devices(void) 290 { 291 if (!cpu_class_is_omap1()) 292 return -ENODEV; 293 294 /* please keep these calls, and their implementations above, 295 * in alphabetical order so they're easier to sort through. 296 */ 297 298 omap_init_mbox(); 299 omap_init_rtc(); 300 omap_init_spi100k(); 301 omap_init_sti(); 302 omap_init_audio(); 303 304 return 0; 305 } 306 arch_initcall(omap1_init_devices); 307 308 #if defined(CONFIG_OMAP_WATCHDOG) || defined(CONFIG_OMAP_WATCHDOG_MODULE) 309 310 static struct resource wdt_resources[] = { 311 { 312 .start = 0xfffeb000, 313 .end = 0xfffeb07F, 314 .flags = IORESOURCE_MEM, 315 }, 316 }; 317 318 static struct platform_device omap_wdt_device = { 319 .name = "omap_wdt", 320 .id = -1, 321 .num_resources = ARRAY_SIZE(wdt_resources), 322 .resource = wdt_resources, 323 }; 324 325 static int __init omap_init_wdt(void) 326 { 327 if (!cpu_is_omap16xx()) 328 return -ENODEV; 329 330 return platform_device_register(&omap_wdt_device); 331 } 332 subsys_initcall(omap_init_wdt); 333 #endif 334