Tony Lindgren | 1a8bfa1 | 2005-11-10 14:26:50 +0000 | [diff] [blame] | 1 | /* |
| 2 | * linux/arch/arm/plat-omap/devices.c |
| 3 | * |
| 4 | * Common platform device setup/initialization for OMAP1 and OMAP2 |
| 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/config.h> |
| 13 | #include <linux/module.h> |
| 14 | #include <linux/kernel.h> |
| 15 | #include <linux/init.h> |
| 16 | #include <linux/platform_device.h> |
| 17 | |
| 18 | #include <asm/hardware.h> |
| 19 | #include <asm/io.h> |
| 20 | #include <asm/mach-types.h> |
| 21 | #include <asm/mach/map.h> |
| 22 | |
| 23 | #include <asm/arch/tc.h> |
| 24 | #include <asm/arch/board.h> |
| 25 | #include <asm/arch/mux.h> |
| 26 | #include <asm/arch/gpio.h> |
| 27 | |
| 28 | |
| 29 | void omap_nop_release(struct device *dev) |
| 30 | { |
| 31 | /* Nothing */ |
| 32 | } |
| 33 | |
| 34 | /*-------------------------------------------------------------------------*/ |
| 35 | |
| 36 | #if defined(CONFIG_I2C_OMAP) || defined(CONFIG_I2C_OMAP_MODULE) |
| 37 | |
| 38 | #define OMAP1_I2C_BASE 0xfffb3800 |
| 39 | #define OMAP2_I2C_BASE1 0x48070000 |
| 40 | #define OMAP_I2C_SIZE 0x3f |
| 41 | #define OMAP1_I2C_INT INT_I2C |
| 42 | #define OMAP2_I2C_INT1 56 |
| 43 | |
| 44 | static struct resource i2c_resources1[] = { |
| 45 | { |
| 46 | .start = 0, |
| 47 | .end = 0, |
| 48 | .flags = IORESOURCE_MEM, |
| 49 | }, |
| 50 | { |
| 51 | .start = 0, |
| 52 | .flags = IORESOURCE_IRQ, |
| 53 | }, |
| 54 | }; |
| 55 | |
| 56 | /* DMA not used; works around erratum writing to non-empty i2c fifo */ |
| 57 | |
| 58 | static struct platform_device omap_i2c_device1 = { |
| 59 | .name = "i2c_omap", |
| 60 | .id = 1, |
| 61 | .dev = { |
| 62 | .release = omap_nop_release, |
| 63 | }, |
| 64 | .num_resources = ARRAY_SIZE(i2c_resources1), |
| 65 | .resource = i2c_resources1, |
| 66 | }; |
| 67 | |
| 68 | /* See also arch/arm/mach-omap2/devices.c for second I2C on 24xx */ |
| 69 | static void omap_init_i2c(void) |
| 70 | { |
| 71 | if (cpu_is_omap24xx()) { |
| 72 | i2c_resources1[0].start = OMAP2_I2C_BASE1; |
| 73 | i2c_resources1[0].end = OMAP2_I2C_BASE1 + OMAP_I2C_SIZE; |
| 74 | i2c_resources1[1].start = OMAP2_I2C_INT1; |
| 75 | } else { |
| 76 | i2c_resources1[0].start = OMAP1_I2C_BASE; |
| 77 | i2c_resources1[0].end = OMAP1_I2C_BASE + OMAP_I2C_SIZE; |
| 78 | i2c_resources1[1].start = OMAP1_I2C_INT; |
| 79 | } |
| 80 | |
| 81 | /* FIXME define and use a boot tag, in case of boards that |
| 82 | * either don't wire up I2C, or chips that mux it differently... |
| 83 | * it can include clocking and address info, maybe more. |
| 84 | */ |
| 85 | if (cpu_is_omap24xx()) { |
| 86 | omap_cfg_reg(M19_24XX_I2C1_SCL); |
| 87 | omap_cfg_reg(L15_24XX_I2C1_SDA); |
| 88 | } else { |
| 89 | omap_cfg_reg(I2C_SCL); |
| 90 | omap_cfg_reg(I2C_SDA); |
| 91 | } |
| 92 | |
| 93 | (void) platform_device_register(&omap_i2c_device1); |
| 94 | } |
| 95 | |
| 96 | #else |
| 97 | static inline void omap_init_i2c(void) {} |
| 98 | #endif |
| 99 | |
| 100 | /*-------------------------------------------------------------------------*/ |
| 101 | |
| 102 | #if defined(CONFIG_MMC_OMAP) || defined(CONFIG_MMC_OMAP_MODULE) |
| 103 | |
| 104 | #ifdef CONFIG_ARCH_OMAP24XX |
| 105 | #define OMAP_MMC1_BASE 0x4809c000 |
| 106 | #define OMAP_MMC1_INT 83 |
| 107 | #else |
| 108 | #define OMAP_MMC1_BASE 0xfffb7800 |
| 109 | #define OMAP_MMC1_INT INT_MMC |
| 110 | #endif |
| 111 | #define OMAP_MMC2_BASE 0xfffb7c00 /* omap16xx only */ |
| 112 | |
| 113 | static struct omap_mmc_conf mmc1_conf; |
| 114 | |
| 115 | static u64 mmc1_dmamask = 0xffffffff; |
| 116 | |
| 117 | static struct resource mmc1_resources[] = { |
| 118 | { |
| 119 | .start = IO_ADDRESS(OMAP_MMC1_BASE), |
| 120 | .end = IO_ADDRESS(OMAP_MMC1_BASE) + 0x7f, |
| 121 | .flags = IORESOURCE_MEM, |
| 122 | }, |
| 123 | { |
| 124 | .start = OMAP_MMC1_INT, |
| 125 | .flags = IORESOURCE_IRQ, |
| 126 | }, |
| 127 | }; |
| 128 | |
| 129 | static struct platform_device mmc_omap_device1 = { |
| 130 | .name = "mmci-omap", |
| 131 | .id = 1, |
| 132 | .dev = { |
| 133 | .release = omap_nop_release, |
| 134 | .dma_mask = &mmc1_dmamask, |
| 135 | .platform_data = &mmc1_conf, |
| 136 | }, |
| 137 | .num_resources = ARRAY_SIZE(mmc1_resources), |
| 138 | .resource = mmc1_resources, |
| 139 | }; |
| 140 | |
| 141 | #ifdef CONFIG_ARCH_OMAP16XX |
| 142 | |
| 143 | static struct omap_mmc_conf mmc2_conf; |
| 144 | |
| 145 | static u64 mmc2_dmamask = 0xffffffff; |
| 146 | |
| 147 | static struct resource mmc2_resources[] = { |
| 148 | { |
| 149 | .start = IO_ADDRESS(OMAP_MMC2_BASE), |
| 150 | .end = IO_ADDRESS(OMAP_MMC2_BASE) + 0x7f, |
| 151 | .flags = IORESOURCE_MEM, |
| 152 | }, |
| 153 | { |
| 154 | .start = INT_1610_MMC2, |
| 155 | .flags = IORESOURCE_IRQ, |
| 156 | }, |
| 157 | }; |
| 158 | |
| 159 | static struct platform_device mmc_omap_device2 = { |
| 160 | .name = "mmci-omap", |
| 161 | .id = 2, |
| 162 | .dev = { |
| 163 | .release = omap_nop_release, |
| 164 | .dma_mask = &mmc2_dmamask, |
| 165 | .platform_data = &mmc2_conf, |
| 166 | }, |
| 167 | .num_resources = ARRAY_SIZE(mmc2_resources), |
| 168 | .resource = mmc2_resources, |
| 169 | }; |
| 170 | #endif |
| 171 | |
| 172 | static void __init omap_init_mmc(void) |
| 173 | { |
| 174 | const struct omap_mmc_config *mmc_conf; |
| 175 | const struct omap_mmc_conf *mmc; |
| 176 | |
| 177 | /* NOTE: assumes MMC was never (wrongly) enabled */ |
| 178 | mmc_conf = omap_get_config(OMAP_TAG_MMC, struct omap_mmc_config); |
| 179 | if (!mmc_conf) |
| 180 | return; |
| 181 | |
| 182 | /* block 1 is always available and has just one pinout option */ |
| 183 | mmc = &mmc_conf->mmc[0]; |
| 184 | if (mmc->enabled) { |
| 185 | if (!cpu_is_omap24xx()) { |
| 186 | omap_cfg_reg(MMC_CMD); |
| 187 | omap_cfg_reg(MMC_CLK); |
| 188 | omap_cfg_reg(MMC_DAT0); |
| 189 | if (cpu_is_omap1710()) { |
| 190 | omap_cfg_reg(M15_1710_MMC_CLKI); |
| 191 | omap_cfg_reg(P19_1710_MMC_CMDDIR); |
| 192 | omap_cfg_reg(P20_1710_MMC_DATDIR0); |
| 193 | } |
| 194 | } |
| 195 | if (mmc->wire4) { |
| 196 | if (!cpu_is_omap24xx()) { |
| 197 | omap_cfg_reg(MMC_DAT1); |
| 198 | /* NOTE: DAT2 can be on W10 (here) or M15 */ |
| 199 | if (!mmc->nomux) |
| 200 | omap_cfg_reg(MMC_DAT2); |
| 201 | omap_cfg_reg(MMC_DAT3); |
| 202 | } |
| 203 | } |
| 204 | mmc1_conf = *mmc; |
| 205 | (void) platform_device_register(&mmc_omap_device1); |
| 206 | } |
| 207 | |
| 208 | #ifdef CONFIG_ARCH_OMAP16XX |
| 209 | /* block 2 is on newer chips, and has many pinout options */ |
| 210 | mmc = &mmc_conf->mmc[1]; |
| 211 | if (mmc->enabled) { |
| 212 | if (!mmc->nomux) { |
| 213 | omap_cfg_reg(Y8_1610_MMC2_CMD); |
| 214 | omap_cfg_reg(Y10_1610_MMC2_CLK); |
| 215 | omap_cfg_reg(R18_1610_MMC2_CLKIN); |
| 216 | omap_cfg_reg(W8_1610_MMC2_DAT0); |
| 217 | if (mmc->wire4) { |
| 218 | omap_cfg_reg(V8_1610_MMC2_DAT1); |
| 219 | omap_cfg_reg(W15_1610_MMC2_DAT2); |
| 220 | omap_cfg_reg(R10_1610_MMC2_DAT3); |
| 221 | } |
| 222 | |
| 223 | /* These are needed for the level shifter */ |
| 224 | omap_cfg_reg(V9_1610_MMC2_CMDDIR); |
| 225 | omap_cfg_reg(V5_1610_MMC2_DATDIR0); |
| 226 | omap_cfg_reg(W19_1610_MMC2_DATDIR1); |
| 227 | } |
| 228 | |
| 229 | /* Feedback clock must be set on OMAP-1710 MMC2 */ |
| 230 | if (cpu_is_omap1710()) |
| 231 | omap_writel(omap_readl(MOD_CONF_CTRL_1) | (1 << 24), |
| 232 | MOD_CONF_CTRL_1); |
| 233 | mmc2_conf = *mmc; |
| 234 | (void) platform_device_register(&mmc_omap_device2); |
| 235 | } |
| 236 | #endif |
| 237 | return; |
| 238 | } |
| 239 | #else |
| 240 | static inline void omap_init_mmc(void) {} |
| 241 | #endif |
| 242 | |
| 243 | #if defined(CONFIG_OMAP_WATCHDOG) || defined(CONFIG_OMAP_WATCHDOG_MODULE) |
| 244 | |
| 245 | #ifdef CONFIG_ARCH_OMAP24XX |
| 246 | #define OMAP_WDT_BASE 0x48022000 |
| 247 | #else |
| 248 | #define OMAP_WDT_BASE 0xfffeb000 |
| 249 | #endif |
| 250 | |
| 251 | static struct resource wdt_resources[] = { |
| 252 | { |
| 253 | .start = OMAP_WDT_BASE, |
| 254 | .end = OMAP_WDT_BASE + 0x4f, |
| 255 | .flags = IORESOURCE_MEM, |
| 256 | }, |
| 257 | }; |
| 258 | |
| 259 | static struct platform_device omap_wdt_device = { |
| 260 | .name = "omap_wdt", |
| 261 | .id = -1, |
| 262 | .dev = { |
| 263 | .release = omap_nop_release, |
| 264 | }, |
| 265 | .num_resources = ARRAY_SIZE(wdt_resources), |
| 266 | .resource = wdt_resources, |
| 267 | }; |
| 268 | |
| 269 | static void omap_init_wdt(void) |
| 270 | { |
| 271 | (void) platform_device_register(&omap_wdt_device); |
| 272 | } |
| 273 | #else |
| 274 | static inline void omap_init_wdt(void) {} |
| 275 | #endif |
| 276 | |
| 277 | /*-------------------------------------------------------------------------*/ |
| 278 | |
| 279 | #if defined(CONFIG_OMAP_RNG) || defined(CONFIG_OMAP_RNG_MODULE) |
| 280 | |
| 281 | #ifdef CONFIG_ARCH_OMAP24XX |
| 282 | #define OMAP_RNG_BASE 0x480A0000 |
| 283 | #else |
| 284 | #define OMAP_RNG_BASE 0xfffe5000 |
| 285 | #endif |
| 286 | |
| 287 | static struct resource rng_resources[] = { |
| 288 | { |
| 289 | .start = OMAP_RNG_BASE, |
| 290 | .end = OMAP_RNG_BASE + 0x4f, |
| 291 | .flags = IORESOURCE_MEM, |
| 292 | }, |
| 293 | }; |
| 294 | |
| 295 | static struct platform_device omap_rng_device = { |
| 296 | .name = "omap_rng", |
| 297 | .id = -1, |
| 298 | .dev = { |
| 299 | .release = omap_nop_release, |
| 300 | }, |
| 301 | .num_resources = ARRAY_SIZE(rng_resources), |
| 302 | .resource = rng_resources, |
| 303 | }; |
| 304 | |
| 305 | static void omap_init_rng(void) |
| 306 | { |
| 307 | (void) platform_device_register(&omap_rng_device); |
| 308 | } |
| 309 | #else |
| 310 | static inline void omap_init_rng(void) {} |
| 311 | #endif |
| 312 | |
| 313 | #if defined(CONFIG_FB_OMAP) || defined(CONFIG_FB_OMAP_MODULE) |
| 314 | |
| 315 | static struct omap_lcd_config omap_fb_conf; |
| 316 | |
| 317 | static u64 omap_fb_dma_mask = ~(u32)0; |
| 318 | |
| 319 | static struct platform_device omap_fb_device = { |
| 320 | .name = "omapfb", |
| 321 | .id = -1, |
| 322 | .dev = { |
| 323 | .release = omap_nop_release, |
| 324 | .dma_mask = &omap_fb_dma_mask, |
| 325 | .coherent_dma_mask = ~(u32)0, |
| 326 | .platform_data = &omap_fb_conf, |
| 327 | }, |
| 328 | .num_resources = 0, |
| 329 | }; |
| 330 | |
| 331 | static inline void omap_init_fb(void) |
| 332 | { |
| 333 | const struct omap_lcd_config *conf; |
| 334 | |
| 335 | conf = omap_get_config(OMAP_TAG_LCD, struct omap_lcd_config); |
| 336 | if (conf != NULL) |
| 337 | omap_fb_conf = *conf; |
| 338 | platform_device_register(&omap_fb_device); |
| 339 | } |
| 340 | |
| 341 | #else |
| 342 | |
| 343 | static inline void omap_init_fb(void) {} |
| 344 | |
| 345 | #endif |
| 346 | |
| 347 | /* |
| 348 | * This gets called after board-specific INIT_MACHINE, and initializes most |
| 349 | * on-chip peripherals accessible on this board (except for few like USB): |
| 350 | * |
| 351 | * (a) Does any "standard config" pin muxing needed. Board-specific |
| 352 | * code will have muxed GPIO pins and done "nonstandard" setup; |
| 353 | * that code could live in the boot loader. |
| 354 | * (b) Populating board-specific platform_data with the data drivers |
| 355 | * rely on to handle wiring variations. |
| 356 | * (c) Creating platform devices as meaningful on this board and |
| 357 | * with this kernel configuration. |
| 358 | * |
| 359 | * Claiming GPIOs, and setting their direction and initial values, is the |
| 360 | * responsibility of the device drivers. So is responding to probe(). |
| 361 | * |
| 362 | * Board-specific knowlege like creating devices or pin setup is to be |
| 363 | * kept out of drivers as much as possible. In particular, pin setup |
| 364 | * may be handled by the boot loader, and drivers should expect it will |
| 365 | * normally have been done by the time they're probed. |
| 366 | */ |
| 367 | static int __init omap_init_devices(void) |
| 368 | { |
| 369 | /* please keep these calls, and their implementations above, |
| 370 | * in alphabetical order so they're easier to sort through. |
| 371 | */ |
| 372 | omap_init_fb(); |
| 373 | omap_init_i2c(); |
| 374 | omap_init_mmc(); |
| 375 | omap_init_wdt(); |
| 376 | omap_init_rng(); |
| 377 | |
| 378 | return 0; |
| 379 | } |
| 380 | arch_initcall(omap_init_devices); |
| 381 | |