arch/arm/mach-at91rm9200/devices.c

   1 /*
   2  * arch/arm/mach-at91rm9200/devices.c
   3  *
   4  *  Copyright (C) 2005 Thibaut VARENE <varenet@parisc-linux.org>
   5  *  Copyright (C) 2005 David Brownell
   6  *
   7  * This program is free software; you can redistribute it and/or modify
   8  * it under the terms of the GNU General Public License as published by
   9  * the Free Software Foundation; either version 2 of the License, or
  10  * (at your option) any later version.
  11  *
  12  */
  13 #include <asm/mach/arch.h>
  14 #include <asm/mach/map.h>
  15
  16 #include <linux/config.h>
  17 #include <linux/platform_device.h>
  18
  19 #include <asm/hardware.h>
  20 #include <asm/arch/board.h>
  21 #include <asm/arch/gpio.h>
  22
  23 #include "generic.h"
  24
  25 #define SZ_512  0x00000200
  26 #define SZ_256  0x00000100
  27 #define SZ_16   0x00000010
  28
  29 /* --------------------------------------------------------------------
  30  *  USB Host
  31  * -------------------------------------------------------------------- */
  32
  33 #if defined(CONFIG_USB_OHCI_HCD) || defined(CONFIG_USB_OHCI_HCD_MODULE)
  34 static u64 ohci_dmamask = 0xffffffffUL;
  35 static struct at91_usbh_data usbh_data;
  36
  37 static struct resource at91_usbh_resources[] = {
  38         [0] = {
  39                 .start  = AT91_UHP_BASE,
  40                 .end    = AT91_UHP_BASE + SZ_1M - 1,
  41                 .flags  = IORESOURCE_MEM,
  42         },
  43         [1] = {
  44                 .start  = AT91_ID_UHP,
  45                 .end    = AT91_ID_UHP,
  46                 .flags  = IORESOURCE_IRQ,
  47         },
  48 };
  49
  50 static struct platform_device at91rm9200_usbh_device = {
  51         .name           = "at91_ohci",
  52         .id             = -1,
  53         .dev            = {
  54                                 .dma_mask               = &ohci_dmamask,
  55                                 .coherent_dma_mask      = 0xffffffff,
  56                                 .platform_data          = &usbh_data,
  57         },
  58         .resource       = at91_usbh_resources,
  59         .num_resources  = ARRAY_SIZE(at91_usbh_resources),
  60 };
  61
  62 void __init at91_add_device_usbh(struct at91_usbh_data *data)
  63 {
  64         if (!data)
  65                 return;
  66
  67         usbh_data = *data;
  68         platform_device_register(&at91rm9200_usbh_device);
  69 }
  70 #else
  71 void __init at91_add_device_usbh(struct at91_usbh_data *data) {}
  72 #endif
  73
  74
  75 /* --------------------------------------------------------------------
  76  *  USB Device (Gadget)
  77  * -------------------------------------------------------------------- */
  78
  79 #ifdef CONFIG_USB_GADGET_AT91
  80 static struct at91_udc_data udc_data;
  81
  82 static struct resource at91_udc_resources[] = {
  83         [0] = {
  84                 .start  = AT91_BASE_UDP,
  85                 .end    = AT91_BASE_UDP + SZ_16K - 1,
  86                 .flags  = IORESOURCE_MEM,
  87         },
  88         [1] = {
  89                 .start  = AT91_ID_UDP,
  90                 .end    = AT91_ID_UDP,
  91                 .flags  = IORESOURCE_IRQ,
  92         },
  93 };
  94
  95 static struct platform_device at91rm9200_udc_device = {
  96         .name           = "at91_udc",
  97         .id             = -1,
  98         .dev            = {
  99                                 .platform_data          = &udc_data,
 100         },
 101         .resource       = at91_udc_resources,
 102         .num_resources  = ARRAY_SIZE(at91_udc_resources),
 103 };
 104
 105 void __init at91_add_device_udc(struct at91_udc_data *data)
 106 {
 107         if (!data)
 108                 return;
 109
 110         if (data->vbus_pin) {
 111                 at91_set_gpio_input(data->vbus_pin, 0);
 112                 at91_set_deglitch(data->vbus_pin, 1);
 113         }
 114         if (data->pullup_pin)
 115                 at91_set_gpio_output(data->pullup_pin, 0);
 116
 117         udc_data = *data;
 118         platform_device_register(&at91rm9200_udc_device);
 119 }
 120 #else
 121 void __init at91_add_device_udc(struct at91_udc_data *data) {}
 122 #endif
 123
 124
 125 /* --------------------------------------------------------------------
 126  *  Ethernet
 127  * -------------------------------------------------------------------- */
 128
 129 #if defined(CONFIG_ARM_AT91_ETHER) || defined(CONFIG_ARM_AT91_ETHER_MODULE)
 130 static u64 eth_dmamask = 0xffffffffUL;
 131 static struct at91_eth_data eth_data;
 132
 133 static struct resource at91_eth_resources[] = {
 134         [0] = {
 135                 .start  = AT91_BASE_EMAC,
 136                 .end    = AT91_BASE_EMAC + SZ_16K - 1,
 137                 .flags  = IORESOURCE_MEM,
 138         },
 139         [1] = {
 140                 .start  = AT91_ID_EMAC,
 141                 .end    = AT91_ID_EMAC,
 142                 .flags  = IORESOURCE_IRQ,
 143         },
 144 };
 145
 146 static struct platform_device at91rm9200_eth_device = {
 147         .name           = "at91_ether",
 148         .id             = -1,
 149         .dev            = {
 150                                 .dma_mask               = &eth_dmamask,
 151                                 .coherent_dma_mask      = 0xffffffff,
 152                                 .platform_data          = &eth_data,
 153         },
 154         .resource       = at91_eth_resources,
 155         .num_resources  = ARRAY_SIZE(at91_eth_resources),
 156 };
 157
 158 void __init at91_add_device_eth(struct at91_eth_data *data)
 159 {
 160         if (!data)
 161                 return;
 162
 163         if (data->phy_irq_pin) {
 164                 at91_set_gpio_input(data->phy_irq_pin, 0);
 165                 at91_set_deglitch(data->phy_irq_pin, 1);
 166         }
 167
 168         /* Pins used for MII and RMII */
 169         at91_set_A_periph(AT91_PIN_PA16, 0);    /* EMDIO */
 170         at91_set_A_periph(AT91_PIN_PA15, 0);    /* EMDC */
 171         at91_set_A_periph(AT91_PIN_PA14, 0);    /* ERXER */
 172         at91_set_A_periph(AT91_PIN_PA13, 0);    /* ERX1 */
 173         at91_set_A_periph(AT91_PIN_PA12, 0);    /* ERX0 */
 174         at91_set_A_periph(AT91_PIN_PA11, 0);    /* ECRS_ECRSDV */
 175         at91_set_A_periph(AT91_PIN_PA10, 0);    /* ETX1 */
 176         at91_set_A_periph(AT91_PIN_PA9, 0);     /* ETX0 */
 177         at91_set_A_periph(AT91_PIN_PA8, 0);     /* ETXEN */
 178         at91_set_A_periph(AT91_PIN_PA7, 0);     /* ETXCK_EREFCK */
 179
 180         if (!data->is_rmii) {
 181                 at91_set_B_periph(AT91_PIN_PB19, 0);    /* ERXCK */
 182                 at91_set_B_periph(AT91_PIN_PB18, 0);    /* ECOL */
 183                 at91_set_B_periph(AT91_PIN_PB17, 0);    /* ERXDV */
 184                 at91_set_B_periph(AT91_PIN_PB16, 0);    /* ERX3 */
 185                 at91_set_B_periph(AT91_PIN_PB15, 0);    /* ERX2 */
 186                 at91_set_B_periph(AT91_PIN_PB14, 0);    /* ETXER */
 187                 at91_set_B_periph(AT91_PIN_PB13, 0);    /* ETX3 */
 188                 at91_set_B_periph(AT91_PIN_PB12, 0);    /* ETX2 */
 189         }
 190
 191         eth_data = *data;
 192         platform_device_register(&at91rm9200_eth_device);
 193 }
 194 #else
 195 void __init at91_add_device_eth(struct at91_eth_data *data) {}
 196 #endif
 197
 198
 199 /* --------------------------------------------------------------------
 200  *  Compact Flash / PCMCIA
 201  * -------------------------------------------------------------------- */
 202
 203 #if defined(CONFIG_AT91_CF) || defined(CONFIG_AT91_CF_MODULE)
 204 static struct at91_cf_data cf_data;
 205
 206 static struct resource at91_cf_resources[] = {
 207         [0] = {
 208                 .start  = AT91_CF_BASE,
 209                 /* ties up CS4, CS5 and CS6 */
 210                 .end    = AT91_CF_BASE + (0x30000000 - 1),
 211                 .flags  = IORESOURCE_MEM | IORESOURCE_MEM_8AND16BIT,
 212         },
 213 };
 214
 215 static struct platform_device at91rm9200_cf_device = {
 216         .name           = "at91_cf",
 217         .id             = -1,
 218         .dev            = {
 219                                 .platform_data          = &cf_data,
 220         },
 221         .resource       = at91_cf_resources,
 222         .num_resources  = ARRAY_SIZE(at91_cf_resources),
 223 };
 224
 225 void __init at91_add_device_cf(struct at91_cf_data *data)
 226 {
 227         if (!data)
 228                 return;
 229
 230         /* input/irq */
 231         if (data->irq_pin) {
 232                 at91_set_gpio_input(data->irq_pin, 1);
 233                 at91_set_deglitch(data->irq_pin, 1);
 234         }
 235         at91_set_gpio_input(data->det_pin, 1);
 236         at91_set_deglitch(data->det_pin, 1);
 237
 238         /* outputs, initially off */
 239         if (data->vcc_pin)
 240                 at91_set_gpio_output(data->vcc_pin, 0);
 241         at91_set_gpio_output(data->rst_pin, 0);
 242
 243         /* force poweron defaults for these pins ... */
 244         at91_set_A_periph(AT91_PIN_PC9, 0);     /* A25/CFRNW */
 245         at91_set_A_periph(AT91_PIN_PC10, 0);    /* NCS4/CFCS */
 246         at91_set_A_periph(AT91_PIN_PC11, 0);    /* NCS5/CFCE1 */
 247         at91_set_A_periph(AT91_PIN_PC12, 0);    /* NCS6/CFCE2 */
 248
 249         cf_data = *data;
 250         platform_device_register(&at91rm9200_cf_device);
 251 }
 252 #else
 253 void __init at91_add_device_cf(struct at91_cf_data *data) {}
 254 #endif
 255
 256
 257 /* --------------------------------------------------------------------
 258  *  MMC / SD
 259  * -------------------------------------------------------------------- */
 260
 261 #if defined(CONFIG_MMC_AT91RM9200) || defined(CONFIG_MMC_AT91RM9200_MODULE)
 262 static u64 mmc_dmamask = 0xffffffffUL;
 263 static struct at91_mmc_data mmc_data;
 264
 265 static struct resource at91_mmc_resources[] = {
 266         [0] = {
 267                 .start  = AT91_BASE_MCI,
 268                 .end    = AT91_BASE_MCI + SZ_16K - 1,
 269                 .flags  = IORESOURCE_MEM,
 270         },
 271         [1] = {
 272                 .start  = AT91_ID_MCI,
 273                 .end    = AT91_ID_MCI,
 274                 .flags  = IORESOURCE_IRQ,
 275         },
 276 };
 277
 278 static struct platform_device at91rm9200_mmc_device = {
 279         .name           = "at91_mci",
 280         .id             = -1,
 281         .dev            = {
 282                                 .dma_mask               = &mmc_dmamask,
 283                                 .coherent_dma_mask      = 0xffffffff,
 284                                 .platform_data          = &mmc_data,
 285         },
 286         .resource       = at91_mmc_resources,
 287         .num_resources  = ARRAY_SIZE(at91_mmc_resources),
 288 };
 289
 290 void __init at91_add_device_mmc(struct at91_mmc_data *data)
 291 {
 292         if (!data)
 293                 return;
 294
 295         /* input/irq */
 296         if (data->det_pin) {
 297                 at91_set_gpio_input(data->det_pin, 1);
 298                 at91_set_deglitch(data->det_pin, 1);
 299         }
 300         if (data->wp_pin)
 301                 at91_set_gpio_input(data->wp_pin, 1);
 302
 303         /* CLK */
 304         at91_set_A_periph(AT91_PIN_PA27, 0);
 305
 306         if (data->is_b) {
 307                 /* CMD */
 308                 at91_set_B_periph(AT91_PIN_PA8, 0);
 309
 310                 /* DAT0, maybe DAT1..DAT3 */
 311                 at91_set_B_periph(AT91_PIN_PA9, 0);
 312                 if (data->wire4) {
 313                         at91_set_B_periph(AT91_PIN_PA10, 0);
 314                         at91_set_B_periph(AT91_PIN_PA11, 0);
 315                         at91_set_B_periph(AT91_PIN_PA12, 0);
 316                 }
 317         } else {
 318                 /* CMD */
 319                 at91_set_A_periph(AT91_PIN_PA28, 0);
 320
 321                 /* DAT0, maybe DAT1..DAT3 */
 322                 at91_set_A_periph(AT91_PIN_PA29, 0);
 323                 if (data->wire4) {
 324                         at91_set_B_periph(AT91_PIN_PB3, 0);
 325                         at91_set_B_periph(AT91_PIN_PB4, 0);
 326                         at91_set_B_periph(AT91_PIN_PB5, 0);
 327                 }
 328         }
 329
 330         mmc_data = *data;
 331         platform_device_register(&at91rm9200_mmc_device);
 332 }
 333 #else
 334 void __init at91_add_device_mmc(struct at91_mmc_data *data) {}
 335 #endif
 336
 337
 338 /* --------------------------------------------------------------------
 339  *  NAND / SmartMedia
 340  * -------------------------------------------------------------------- */
 341
 342 #if defined(CONFIG_MTD_NAND_AT91) || defined(CONFIG_MTD_NAND_AT91_MODULE)
 343 static struct at91_nand_data nand_data;
 344
 345 static struct resource at91_nand_resources[] = {
 346         {
 347                 .start  = AT91_SMARTMEDIA_BASE,
 348                 .end    = AT91_SMARTMEDIA_BASE + SZ_8M - 1,
 349                 .flags  = IORESOURCE_MEM,
 350         }
 351 };
 352
 353 static struct platform_device at91_nand_device = {
 354         .name           = "at91_nand",
 355         .id             = -1,
 356         .dev            = {
 357                                 .platform_data  = &nand_data,
 358         },
 359         .resource       = at91_nand_resources,
 360         .num_resources  = ARRAY_SIZE(at91_nand_resources),
 361 };
 362
 363 void __init at91_add_device_nand(struct at91_nand_data *data)
 364 {
 365         if (!data)
 366                 return;
 367
 368         /* enable pin */
 369         if (data->enable_pin)
 370                 at91_set_gpio_output(data->enable_pin, 1);
 371
 372         /* ready/busy pin */
 373         if (data->rdy_pin)
 374                 at91_set_gpio_input(data->rdy_pin, 1);
 375
 376         /* card detect pin */
 377         if (data->det_pin)
 378                 at91_set_gpio_input(data->det_pin, 1);
 379
 380         at91_set_A_periph(AT91_PIN_PC1, 0);             /* SMOE */
 381         at91_set_A_periph(AT91_PIN_PC3, 0);             /* SMWE */
 382
 383         nand_data = *data;
 384         platform_device_register(&at91_nand_device);
 385 }
 386 #else
 387 void __init at91_add_device_nand(struct at91_nand_data *data) {}
 388 #endif
 389
 390
 391 /* --------------------------------------------------------------------
 392  *  TWI (i2c)
 393  * -------------------------------------------------------------------- */
 394
 395 #if defined(CONFIG_I2C_AT91) || defined(CONFIG_I2C_AT91_MODULE)
 396 static struct platform_device at91rm9200_twi_device = {
 397         .name           = "at91_i2c",
 398         .id             = -1,
 399         .num_resources  = 0,
 400 };
 401
 402 void __init at91_add_device_i2c(void)
 403 {
 404         /* pins used for TWI interface */
 405         at91_set_A_periph(AT91_PIN_PA25, 0);            /* TWD */
 406         at91_set_multi_drive(AT91_PIN_PA25, 1);
 407
 408         at91_set_A_periph(AT91_PIN_PA26, 0);            /* TWCK */
 409         at91_set_multi_drive(AT91_PIN_PA26, 1);
 410
 411         platform_device_register(&at91rm9200_twi_device);
 412 }
 413 #else
 414 void __init at91_add_device_i2c(void) {}
 415 #endif
 416
 417
 418 /* --------------------------------------------------------------------
 419  *  SPI
 420  * -------------------------------------------------------------------- */
 421
 422 #if defined(CONFIG_SPI_AT91) || defined(CONFIG_SPI_AT91_MODULE) || defined(CONFIG_AT91_SPI) || defined(CONFIG_AT91_SPI_MODULE)
 423 static u64 spi_dmamask = 0xffffffffUL;
 424
 425 static struct resource at91_spi_resources[] = {
 426         [0] = {
 427                 .start  = AT91_BASE_SPI,
 428                 .end    = AT91_BASE_SPI + SZ_16K - 1,
 429                 .flags  = IORESOURCE_MEM,
 430         },
 431         [1] = {
 432                 .start  = AT91_ID_SPI,
 433                 .end    = AT91_ID_SPI,
 434                 .flags  = IORESOURCE_IRQ,
 435         },
 436 };
 437
 438 static struct platform_device at91rm9200_spi_device = {
 439         .name           = "at91_spi",
 440         .id             = 0,
 441         .dev            = {
 442                 .dma_mask               = &spi_dmamask,
 443                 .coherent_dma_mask      = 0xffffffff,
 444         },
 445         .resource       = at91_spi_resources,
 446         .num_resources  = ARRAY_SIZE(at91_spi_resources),
 447 };
 448
 449 static const unsigned at91_spi_standard_cs[4] = { AT91_PIN_PA3, AT91_PIN_PA4, AT91_PIN_PA5, AT91_PIN_PA6 };
 450
 451 void __init at91_add_device_spi(struct spi_board_info *devices, int nr_devices)
 452 {
 453         int i;
 454         unsigned long cs_pin;
 455
 456         at91_set_A_periph(AT91_PIN_PA0, 0);     /* MISO */
 457         at91_set_A_periph(AT91_PIN_PA1, 0);     /* MOSI */
 458         at91_set_A_periph(AT91_PIN_PA2, 0);     /* SPCK */
 459
 460         /* Enable SPI chip-selects */
 461         for (i = 0; i < nr_devices; i++) {
 462                 if (devices[i].controller_data)
 463                         cs_pin = (unsigned long) devices[i].controller_data;
 464                 else
 465                         cs_pin = at91_spi_standard_cs[devices[i].chip_select];
 466
 467 #ifdef CONFIG_SPI_AT91_MANUAL_CS
 468                 at91_set_gpio_output(cs_pin, 1);
 469 #else
 470                 at91_set_A_periph(cs_pin, 0);
 471 #endif
 472
 473                 /* pass chip-select pin to driver */
 474                 devices[i].controller_data = (void *) cs_pin;
 475         }
 476
 477         spi_register_board_info(devices, nr_devices);
 478         at91_clock_associate("spi0_clk", &at91rm9200_spi_device.dev, "spi");
 479         platform_device_register(&at91rm9200_spi_device);
 480 }
 481 #else
 482 void __init at91_add_device_spi(struct spi_board_info *devices, int nr_devices) {}
 483 #endif
 484
 485
 486 /* --------------------------------------------------------------------
 487  *  RTC
 488  * -------------------------------------------------------------------- */
 489
 490 #if defined(CONFIG_RTC_DRV_AT91) || defined(CONFIG_RTC_DRV_AT91_MODULE)
 491 static struct platform_device at91rm9200_rtc_device = {
 492         .name           = "at91_rtc",
 493         .id             = -1,
 494         .num_resources  = 0,
 495 };
 496
 497 static void __init at91_add_device_rtc(void)
 498 {
 499         platform_device_register(&at91rm9200_rtc_device);
 500 }
 501 #else
 502 static void __init at91_add_device_rtc(void) {}
 503 #endif
 504
 505
 506 /* --------------------------------------------------------------------
 507  *  Watchdog
 508  * -------------------------------------------------------------------- */
 509
 510 #if defined(CONFIG_AT91_WATCHDOG) || defined(CONFIG_AT91_WATCHDOG_MODULE)
 511 static struct platform_device at91rm9200_wdt_device = {
 512         .name           = "at91_wdt",
 513         .id             = -1,
 514         .num_resources  = 0,
 515 };
 516
 517 static void __init at91_add_device_watchdog(void)
 518 {
 519         platform_device_register(&at91rm9200_wdt_device);
 520 }
 521 #else
 522 static void __init at91_add_device_watchdog(void) {}
 523 #endif
 524
 525
 526 /* --------------------------------------------------------------------
 527  *  LEDs
 528  * -------------------------------------------------------------------- */
 529
 530 #if defined(CONFIG_LEDS)
 531 u8 at91_leds_cpu;
 532 u8 at91_leds_timer;
 533
 534 void __init at91_init_leds(u8 cpu_led, u8 timer_led)
 535 {
 536         at91_leds_cpu   = cpu_led;
 537         at91_leds_timer = timer_led;
 538 }
 539 #else
 540 void __init at91_init_leds(u8 cpu_led, u8 timer_led) {}
 541 #endif
 542
 543
 544 /* --------------------------------------------------------------------
 545  *  UART
 546  * -------------------------------------------------------------------- */
 547
 548 #if defined(CONFIG_SERIAL_AT91)
 549 static struct resource dbgu_resources[] = {
 550         [0] = {
 551                 .start  = AT91_VA_BASE_SYS + AT91_DBGU,
 552                 .end    = AT91_VA_BASE_SYS + AT91_DBGU + SZ_512 - 1,
 553                 .flags  = IORESOURCE_MEM,
 554         },
 555         [1] = {
 556                 .start  = AT91_ID_SYS,
 557                 .end    = AT91_ID_SYS,
 558                 .flags  = IORESOURCE_IRQ,
 559         },
 560 };
 561
 562 static struct at91_uart_data dbgu_data = {
 563         .use_dma_tx     = 0,
 564         .use_dma_rx     = 0,            /* DBGU not capable of receive DMA */
 565 };
 566
 567 static struct platform_device at91rm9200_dbgu_device = {
 568         .name           = "at91_usart",
 569         .id             = 0,
 570         .dev            = {
 571                                 .platform_data  = &dbgu_data,
 572                                 .coherent_dma_mask = 0xffffffff,
 573         },
 574         .resource       = dbgu_resources,
 575         .num_resources  = ARRAY_SIZE(dbgu_resources),
 576 };
 577
 578 static inline void configure_dbgu_pins(void)
 579 {
 580         at91_set_A_periph(AT91_PIN_PA30, 0);            /* DRXD */
 581         at91_set_A_periph(AT91_PIN_PA31, 1);            /* DTXD */
 582 }
 583
 584 static struct resource uart0_resources[] = {
 585         [0] = {
 586                 .start  = AT91_BASE_US0,
 587                 .end    = AT91_BASE_US0 + SZ_16K - 1,
 588                 .flags  = IORESOURCE_MEM,
 589         },
 590         [1] = {
 591                 .start  = AT91_ID_US0,
 592                 .end    = AT91_ID_US0,
 593                 .flags  = IORESOURCE_IRQ,
 594         },
 595 };
 596
 597 static struct at91_uart_data uart0_data = {
 598         .use_dma_tx     = 1,
 599         .use_dma_rx     = 1,
 600 };
 601
 602 static struct platform_device at91rm9200_uart0_device = {
 603         .name           = "at91_usart",
 604         .id             = 1,
 605         .dev            = {
 606                                 .platform_data  = &uart0_data,
 607                                 .coherent_dma_mask = 0xffffffff,
 608         },
 609         .resource       = uart0_resources,
 610         .num_resources  = ARRAY_SIZE(uart0_resources),
 611 };
 612
 613 static inline void configure_usart0_pins(void)
 614 {
 615         at91_set_A_periph(AT91_PIN_PA17, 1);            /* TXD0 */
 616         at91_set_A_periph(AT91_PIN_PA18, 0);            /* RXD0 */
 617         at91_set_A_periph(AT91_PIN_PA20, 0);            /* CTS0 */
 618
 619         /*
 620          * AT91RM9200 Errata #39 - RTS0 is not internally connected to PA21.
 621          *  We need to drive the pin manually.  Default is off (RTS is active low).
 622          */
 623         at91_set_gpio_output(AT91_PIN_PA21, 1);
 624 }
 625
 626 static struct resource uart1_resources[] = {
 627         [0] = {
 628                 .start  = AT91_BASE_US1,
 629                 .end    = AT91_BASE_US1 + SZ_16K - 1,
 630                 .flags  = IORESOURCE_MEM,
 631         },
 632         [1] = {
 633                 .start  = AT91_ID_US1,
 634                 .end    = AT91_ID_US1,
 635                 .flags  = IORESOURCE_IRQ,
 636         },
 637 };
 638
 639 static struct at91_uart_data uart1_data = {
 640         .use_dma_tx     = 1,
 641         .use_dma_rx     = 1,
 642 };
 643
 644 static struct platform_device at91rm9200_uart1_device = {
 645         .name           = "at91_usart",
 646         .id             = 2,
 647         .dev            = {
 648                                 .platform_data  = &uart1_data,
 649                                 .coherent_dma_mask = 0xffffffff,
 650         },
 651         .resource       = uart1_resources,
 652         .num_resources  = ARRAY_SIZE(uart1_resources),
 653 };
 654
 655 static inline void configure_usart1_pins(void)
 656 {
 657         at91_set_A_periph(AT91_PIN_PB18, 0);            /* RI1 */
 658         at91_set_A_periph(AT91_PIN_PB19, 0);            /* DTR1 */
 659         at91_set_A_periph(AT91_PIN_PB20, 1);            /* TXD1 */
 660         at91_set_A_periph(AT91_PIN_PB21, 0);            /* RXD1 */
 661         at91_set_A_periph(AT91_PIN_PB23, 0);            /* DCD1 */
 662         at91_set_A_periph(AT91_PIN_PB24, 0);            /* CTS1 */
 663         at91_set_A_periph(AT91_PIN_PB25, 0);            /* DSR1 */
 664         at91_set_A_periph(AT91_PIN_PB26, 0);            /* RTS1 */
 665 }
 666
 667 static struct resource uart2_resources[] = {
 668         [0] = {
 669                 .start  = AT91_BASE_US2,
 670                 .end    = AT91_BASE_US2 + SZ_16K - 1,
 671                 .flags  = IORESOURCE_MEM,
 672         },
 673         [1] = {
 674                 .start  = AT91_ID_US2,
 675                 .end    = AT91_ID_US2,
 676                 .flags  = IORESOURCE_IRQ,
 677         },
 678 };
 679
 680 static struct at91_uart_data uart2_data = {
 681         .use_dma_tx     = 1,
 682         .use_dma_rx     = 1,
 683 };
 684
 685 static struct platform_device at91rm9200_uart2_device = {
 686         .name           = "at91_usart",
 687         .id             = 3,
 688         .dev            = {
 689                                 .platform_data  = &uart2_data,
 690                                 .coherent_dma_mask = 0xffffffff,
 691         },
 692         .resource       = uart2_resources,
 693         .num_resources  = ARRAY_SIZE(uart2_resources),
 694 };
 695
 696 static inline void configure_usart2_pins(void)
 697 {
 698         at91_set_A_periph(AT91_PIN_PA22, 0);            /* RXD2 */
 699         at91_set_A_periph(AT91_PIN_PA23, 1);            /* TXD2 */
 700 }
 701
 702 static struct resource uart3_resources[] = {
 703         [0] = {
 704                 .start  = AT91_BASE_US3,
 705                 .end    = AT91_BASE_US3 + SZ_16K - 1,
 706                 .flags  = IORESOURCE_MEM,
 707         },
 708         [1] = {
 709                 .start  = AT91_ID_US3,
 710                 .end    = AT91_ID_US3,
 711                 .flags  = IORESOURCE_IRQ,
 712         },
 713 };
 714
 715 static struct at91_uart_data uart3_data = {
 716         .use_dma_tx     = 1,
 717         .use_dma_rx     = 1,
 718 };
 719
 720 static struct platform_device at91rm9200_uart3_device = {
 721         .name           = "at91_usart",
 722         .id             = 4,
 723         .dev            = {
 724                                 .platform_data  = &uart3_data,
 725                                 .coherent_dma_mask = 0xffffffff,
 726         },
 727         .resource       = uart3_resources,
 728         .num_resources  = ARRAY_SIZE(uart3_resources),
 729 };
 730
 731 static inline void configure_usart3_pins(void)
 732 {
 733         at91_set_B_periph(AT91_PIN_PA5, 1);             /* TXD3 */
 734         at91_set_B_periph(AT91_PIN_PA6, 0);             /* RXD3 */
 735 }
 736
 737 struct platform_device *at91_uarts[AT91_NR_UART];       /* the UARTs to use */
 738 struct platform_device *at91_default_console_device;    /* the serial console device */
 739
 740 void __init at91_init_serial(struct at91_uart_config *config)
 741 {
 742         int i;
 743
 744         /* Fill in list of supported UARTs */
 745         for (i = 0; i < config->nr_tty; i++) {
 746                 switch (config->tty_map[i]) {
 747                         case 0:
 748                                 configure_usart0_pins();
 749                                 at91_uarts[i] = &at91rm9200_uart0_device;
 750                                 at91_clock_associate("usart0_clk", &at91rm9200_uart0_device.dev, "usart");
 751                                 break;
 752                         case 1:
 753                                 configure_usart1_pins();
 754                                 at91_uarts[i] = &at91rm9200_uart1_device;
 755                                 at91_clock_associate("usart1_clk", &at91rm9200_uart1_device.dev, "usart");
 756                                 break;
 757                         case 2:
 758                                 configure_usart2_pins();
 759                                 at91_uarts[i] = &at91rm9200_uart2_device;
 760                                 at91_clock_associate("usart2_clk", &at91rm9200_uart2_device.dev, "usart");
 761                                 break;
 762                         case 3:
 763                                 configure_usart3_pins();
 764                                 at91_uarts[i] = &at91rm9200_uart3_device;
 765                                 at91_clock_associate("usart3_clk", &at91rm9200_uart3_device.dev, "usart");
 766                                 break;
 767                         case 4:
 768                                 configure_dbgu_pins();
 769                                 at91_uarts[i] = &at91rm9200_dbgu_device;
 770                                 at91_clock_associate("mck", &at91rm9200_dbgu_device.dev, "usart");
 771                                 break;
 772                         default:
 773                                 continue;
 774                 }
 775                 at91_uarts[i]->id = i;          /* update ID number to mapped ID */
 776         }
 777
 778         /* Set serial console device */
 779         if (config->console_tty < AT91_NR_UART)
 780                 at91_default_console_device = at91_uarts[config->console_tty];
 781         if (!at91_default_console_device)
 782                 printk(KERN_INFO "AT91: No default serial console defined.\n");
 783 }
 784
 785 void __init at91_add_device_serial(void)
 786 {
 787         int i;
 788
 789         for (i = 0; i < AT91_NR_UART; i++) {
 790                 if (at91_uarts[i])
 791                         platform_device_register(at91_uarts[i]);
 792         }
 793 }
 794 #else
 795 void __init at91_init_serial(struct at91_uart_config *config) {}
 796 void __init at91_add_device_serial(void) {}
 797 #endif
 798
 799
 800 /* -------------------------------------------------------------------- */
 801
 802 /*
 803  * These devices are always present and don't need any board-specific
 804  * setup.
 805  */
 806 static int __init at91_add_standard_devices(void)
 807 {
 808         at91_add_device_rtc();
 809         at91_add_device_watchdog();
 810         return 0;
 811 }
 812
 813 arch_initcall(at91_add_standard_devices);