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/module.h> 13 #include <linux/kernel.h> 14 #include <linux/init.h> 15 #include <linux/platform_device.h> 16 #include <linux/io.h> 17 #include <linux/spi/spi.h> 18 19 #include <mach/hardware.h> 20 #include <asm/mach/map.h> 21 22 #include <plat/tc.h> 23 #include <plat/board.h> 24 #include <plat/mux.h> 25 #include <mach/gpio.h> 26 #include <plat/mmc.h> 27 #include <plat/omap7xx.h> 28 29 /*-------------------------------------------------------------------------*/ 30 31 #if defined(CONFIG_RTC_DRV_OMAP) || defined(CONFIG_RTC_DRV_OMAP_MODULE) 32 33 #define OMAP_RTC_BASE 0xfffb4800 34 35 static struct resource rtc_resources[] = { 36 { 37 .start = OMAP_RTC_BASE, 38 .end = OMAP_RTC_BASE + 0x5f, 39 .flags = IORESOURCE_MEM, 40 }, 41 { 42 .start = INT_RTC_TIMER, 43 .flags = IORESOURCE_IRQ, 44 }, 45 { 46 .start = INT_RTC_ALARM, 47 .flags = IORESOURCE_IRQ, 48 }, 49 }; 50 51 static struct platform_device omap_rtc_device = { 52 .name = "omap_rtc", 53 .id = -1, 54 .num_resources = ARRAY_SIZE(rtc_resources), 55 .resource = rtc_resources, 56 }; 57 58 static void omap_init_rtc(void) 59 { 60 (void) platform_device_register(&omap_rtc_device); 61 } 62 #else 63 static inline void omap_init_rtc(void) {} 64 #endif 65 66 #if defined(CONFIG_OMAP_DSP) || defined(CONFIG_OMAP_DSP_MODULE) 67 68 #if defined(CONFIG_ARCH_OMAP15XX) 69 # define OMAP1_MBOX_SIZE 0x23 70 # define INT_DSP_MAILBOX1 INT_1510_DSP_MAILBOX1 71 #elif defined(CONFIG_ARCH_OMAP16XX) 72 # define OMAP1_MBOX_SIZE 0x2f 73 # define INT_DSP_MAILBOX1 INT_1610_DSP_MAILBOX1 74 #endif 75 76 #define OMAP1_MBOX_BASE OMAP1_IO_ADDRESS(OMAP16XX_MAILBOX_BASE) 77 78 static struct resource mbox_resources[] = { 79 { 80 .start = OMAP1_MBOX_BASE, 81 .end = OMAP1_MBOX_BASE + OMAP1_MBOX_SIZE, 82 .flags = IORESOURCE_MEM, 83 }, 84 { 85 .start = INT_DSP_MAILBOX1, 86 .flags = IORESOURCE_IRQ, 87 }, 88 }; 89 90 static struct platform_device mbox_device = { 91 .name = "omap1-mailbox", 92 .id = -1, 93 .num_resources = ARRAY_SIZE(mbox_resources), 94 .resource = mbox_resources, 95 }; 96 97 static inline void omap_init_mbox(void) 98 { 99 platform_device_register(&mbox_device); 100 } 101 #else 102 static inline void omap_init_mbox(void) { } 103 #endif 104 105 /*-------------------------------------------------------------------------*/ 106 107 #if defined(CONFIG_MMC_OMAP) || defined(CONFIG_MMC_OMAP_MODULE) 108 109 static inline void omap1_mmc_mux(struct omap_mmc_platform_data *mmc_controller, 110 int controller_nr) 111 { 112 if (controller_nr == 0) { 113 if (cpu_is_omap7xx()) { 114 omap_cfg_reg(MMC_7XX_CMD); 115 omap_cfg_reg(MMC_7XX_CLK); 116 omap_cfg_reg(MMC_7XX_DAT0); 117 } else { 118 omap_cfg_reg(MMC_CMD); 119 omap_cfg_reg(MMC_CLK); 120 omap_cfg_reg(MMC_DAT0); 121 } 122 123 if (cpu_is_omap1710()) { 124 omap_cfg_reg(M15_1710_MMC_CLKI); 125 omap_cfg_reg(P19_1710_MMC_CMDDIR); 126 omap_cfg_reg(P20_1710_MMC_DATDIR0); 127 } 128 if (mmc_controller->slots[0].wires == 4 && !cpu_is_omap7xx()) { 129 omap_cfg_reg(MMC_DAT1); 130 /* NOTE: DAT2 can be on W10 (here) or M15 */ 131 if (!mmc_controller->slots[0].nomux) 132 omap_cfg_reg(MMC_DAT2); 133 omap_cfg_reg(MMC_DAT3); 134 } 135 } 136 137 /* Block 2 is on newer chips, and has many pinout options */ 138 if (cpu_is_omap16xx() && controller_nr == 1) { 139 if (!mmc_controller->slots[1].nomux) { 140 omap_cfg_reg(Y8_1610_MMC2_CMD); 141 omap_cfg_reg(Y10_1610_MMC2_CLK); 142 omap_cfg_reg(R18_1610_MMC2_CLKIN); 143 omap_cfg_reg(W8_1610_MMC2_DAT0); 144 if (mmc_controller->slots[1].wires == 4) { 145 omap_cfg_reg(V8_1610_MMC2_DAT1); 146 omap_cfg_reg(W15_1610_MMC2_DAT2); 147 omap_cfg_reg(R10_1610_MMC2_DAT3); 148 } 149 150 /* These are needed for the level shifter */ 151 omap_cfg_reg(V9_1610_MMC2_CMDDIR); 152 omap_cfg_reg(V5_1610_MMC2_DATDIR0); 153 omap_cfg_reg(W19_1610_MMC2_DATDIR1); 154 } 155 156 /* Feedback clock must be set on OMAP-1710 MMC2 */ 157 if (cpu_is_omap1710()) 158 omap_writel(omap_readl(MOD_CONF_CTRL_1) | (1 << 24), 159 MOD_CONF_CTRL_1); 160 } 161 } 162 163 void __init omap1_init_mmc(struct omap_mmc_platform_data **mmc_data, 164 int nr_controllers) 165 { 166 int i; 167 168 for (i = 0; i < nr_controllers; i++) { 169 unsigned long base, size; 170 unsigned int irq = 0; 171 172 if (!mmc_data[i]) 173 continue; 174 175 omap1_mmc_mux(mmc_data[i], i); 176 177 switch (i) { 178 case 0: 179 base = OMAP1_MMC1_BASE; 180 irq = INT_MMC; 181 break; 182 case 1: 183 if (!cpu_is_omap16xx()) 184 return; 185 base = OMAP1_MMC2_BASE; 186 irq = INT_1610_MMC2; 187 break; 188 default: 189 continue; 190 } 191 size = OMAP1_MMC_SIZE; 192 193 omap_mmc_add("mmci-omap", i, base, size, irq, mmc_data[i]); 194 }; 195 } 196 197 #endif 198 199 /*-------------------------------------------------------------------------*/ 200 201 /* OMAP7xx SPI support */ 202 #if defined(CONFIG_SPI_OMAP_100K) || defined(CONFIG_SPI_OMAP_100K_MODULE) 203 204 struct platform_device omap_spi1 = { 205 .name = "omap1_spi100k", 206 .id = 1, 207 }; 208 209 struct platform_device omap_spi2 = { 210 .name = "omap1_spi100k", 211 .id = 2, 212 }; 213 214 static void omap_init_spi100k(void) 215 { 216 omap_spi1.dev.platform_data = ioremap(OMAP7XX_SPI1_BASE, 0x7ff); 217 if (omap_spi1.dev.platform_data) 218 platform_device_register(&omap_spi1); 219 220 omap_spi2.dev.platform_data = ioremap(OMAP7XX_SPI2_BASE, 0x7ff); 221 if (omap_spi2.dev.platform_data) 222 platform_device_register(&omap_spi2); 223 } 224 225 #else 226 static inline void omap_init_spi100k(void) 227 { 228 } 229 #endif 230 231 /*-------------------------------------------------------------------------*/ 232 233 #if defined(CONFIG_OMAP_STI) 234 235 #define OMAP1_STI_BASE 0xfffea000 236 #define OMAP1_STI_CHANNEL_BASE (OMAP1_STI_BASE + 0x400) 237 238 static struct resource sti_resources[] = { 239 { 240 .start = OMAP1_STI_BASE, 241 .end = OMAP1_STI_BASE + SZ_1K - 1, 242 .flags = IORESOURCE_MEM, 243 }, 244 { 245 .start = OMAP1_STI_CHANNEL_BASE, 246 .end = OMAP1_STI_CHANNEL_BASE + SZ_1K - 1, 247 .flags = IORESOURCE_MEM, 248 }, 249 { 250 .start = INT_1610_STI, 251 .flags = IORESOURCE_IRQ, 252 } 253 }; 254 255 static struct platform_device sti_device = { 256 .name = "sti", 257 .id = -1, 258 .num_resources = ARRAY_SIZE(sti_resources), 259 .resource = sti_resources, 260 }; 261 262 static inline void omap_init_sti(void) 263 { 264 platform_device_register(&sti_device); 265 } 266 #else 267 static inline void omap_init_sti(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 knowlege 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 /* 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(); 302 303 return 0; 304 } 305 arch_initcall(omap1_init_devices); 306 307