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/platform_device.h>
  17
  18 #include <asm/hardware.h>
  19 #include <asm/arch/board.h>
  20 #include <asm/arch/gpio.h>
  21
  22 #include "generic.h"
  23
  24 #define SZ_512  0x00000200
  25 #define SZ_256  0x00000100
  26 #define SZ_16   0x00000010
  27
  28 /* --------------------------------------------------------------------
  29  *  USB Host
  30  * -------------------------------------------------------------------- */
  31
  32 #if defined(CONFIG_USB_OHCI_HCD) || defined(CONFIG_USB_OHCI_HCD_MODULE)
  33 static u64 ohci_dmamask = 0xffffffffUL;
  34 static struct at91_usbh_data usbh_data;
  35
  36 static struct resource at91_usbh_resources[] = {
  37         [0] = {
  38                 .start  = AT91RM9200_UHP_BASE,
  39                 .end    = AT91RM9200_UHP_BASE + SZ_1M - 1,
  40                 .flags  = IORESOURCE_MEM,
  41         },
  42         [1] = {
  43                 .start  = AT91RM9200_ID_UHP,
  44                 .end    = AT91RM9200_ID_UHP,
  45                 .flags  = IORESOURCE_IRQ,
  46         },
  47 };
  48
  49 static struct platform_device at91rm9200_usbh_device = {
  50         .name           = "at91_ohci",
  51         .id             = -1,
  52         .dev            = {
  53                                 .dma_mask               = &ohci_dmamask,
  54                                 .coherent_dma_mask      = 0xffffffff,
  55                                 .platform_data          = &usbh_data,
  56         },
  57         .resource       = at91_usbh_resources,
  58         .num_resources  = ARRAY_SIZE(at91_usbh_resources),
  59 };
  60
  61 void __init at91_add_device_usbh(struct at91_usbh_data *data)
  62 {
  63         if (!data)
  64                 return;
  65
  66         usbh_data = *data;
  67         platform_device_register(&at91rm9200_usbh_device);
  68 }
  69 #else
  70 void __init at91_add_device_usbh(struct at91_usbh_data *data) {}
  71 #endif
  72
  73
  74 /* --------------------------------------------------------------------
  75  *  USB Device (Gadget)
  76  * -------------------------------------------------------------------- */
  77
  78 #ifdef CONFIG_USB_GADGET_AT91
  79 static struct at91_udc_data udc_data;
  80
  81 static struct resource at91_udc_resources[] = {
  82         [0] = {
  83                 .start  = AT91RM9200_BASE_UDP,
  84                 .end    = AT91RM9200_BASE_UDP + SZ_16K - 1,
  85                 .flags  = IORESOURCE_MEM,
  86         },
  87         [1] = {
  88                 .start  = AT91RM9200_ID_UDP,
  89                 .end    = AT91RM9200_ID_UDP,
  90                 .flags  = IORESOURCE_IRQ,
  91         },
  92 };
  93
  94 static struct platform_device at91rm9200_udc_device = {
  95         .name           = "at91_udc",
  96         .id             = -1,
  97         .dev            = {
  98                                 .platform_data          = &udc_data,
  99         },
 100         .resource       = at91_udc_resources,
 101         .num_resources  = ARRAY_SIZE(at91_udc_resources),
 102 };
 103
 104 void __init at91_add_device_udc(struct at91_udc_data *data)
 105 {
 106         if (!data)
 107                 return;
 108
 109         if (data->vbus_pin) {
 110                 at91_set_gpio_input(data->vbus_pin, 0);
 111                 at91_set_deglitch(data->vbus_pin, 1);
 112         }
 113         if (data->pullup_pin)
 114                 at91_set_gpio_output(data->pullup_pin, 0);
 115
 116         udc_data = *data;
 117         platform_device_register(&at91rm9200_udc_device);
 118 }
 119 #else
 120 void __init at91_add_device_udc(struct at91_udc_data *data) {}
 121 #endif
 122
 123
 124 /* --------------------------------------------------------------------
 125  *  Ethernet
 126  * -------------------------------------------------------------------- */
 127
 128 #if defined(CONFIG_ARM_AT91_ETHER) || defined(CONFIG_ARM_AT91_ETHER_MODULE)
 129 static u64 eth_dmamask = 0xffffffffUL;
 130 static struct at91_eth_data eth_data;
 131
 132 static struct resource at91_eth_resources[] = {
 133         [0] = {
 134                 .start  = AT91_VA_BASE_EMAC,
 135                 .end    = AT91_VA_BASE_EMAC + SZ_16K - 1,
 136                 .flags  = IORESOURCE_MEM,
 137         },
 138         [1] = {
 139                 .start  = AT91RM9200_ID_EMAC,
 140                 .end    = AT91RM9200_ID_EMAC,
 141                 .flags  = IORESOURCE_IRQ,
 142         },
 143 };
 144
 145 static struct platform_device at91rm9200_eth_device = {
 146         .name           = "at91_ether",
 147         .id             = -1,
 148         .dev            = {
 149                                 .dma_mask               = &eth_dmamask,
 150                                 .coherent_dma_mask      = 0xffffffff,
 151                                 .platform_data          = &eth_data,
 152         },
 153         .resource       = at91_eth_resources,
 154         .num_resources  = ARRAY_SIZE(at91_eth_resources),
 155 };
 156
 157 void __init at91_add_device_eth(struct at91_eth_data *data)
 158 {
 159         if (!data)
 160                 return;
 161
 162         if (data->phy_irq_pin) {
 163                 at91_set_gpio_input(data->phy_irq_pin, 0);
 164                 at91_set_deglitch(data->phy_irq_pin, 1);
 165         }
 166
 167         /* Pins used for MII and RMII */
 168         at91_set_A_periph(AT91_PIN_PA16, 0);    /* EMDIO */
 169         at91_set_A_periph(AT91_PIN_PA15, 0);    /* EMDC */
 170         at91_set_A_periph(AT91_PIN_PA14, 0);    /* ERXER */
 171         at91_set_A_periph(AT91_PIN_PA13, 0);    /* ERX1 */
 172         at91_set_A_periph(AT91_PIN_PA12, 0);    /* ERX0 */
 173         at91_set_A_periph(AT91_PIN_PA11, 0);    /* ECRS_ECRSDV */
 174         at91_set_A_periph(AT91_PIN_PA10, 0);    /* ETX1 */
 175         at91_set_A_periph(AT91_PIN_PA9, 0);     /* ETX0 */
 176         at91_set_A_periph(AT91_PIN_PA8, 0);     /* ETXEN */
 177         at91_set_A_periph(AT91_PIN_PA7, 0);     /* ETXCK_EREFCK */
 178
 179         if (!data->is_rmii) {
 180                 at91_set_B_periph(AT91_PIN_PB19, 0);    /* ERXCK */
 181                 at91_set_B_periph(AT91_PIN_PB18, 0);    /* ECOL */
 182                 at91_set_B_periph(AT91_PIN_PB17, 0);    /* ERXDV */
 183                 at91_set_B_periph(AT91_PIN_PB16, 0);    /* ERX3 */
 184                 at91_set_B_periph(AT91_PIN_PB15, 0);    /* ERX2 */
 185                 at91_set_B_periph(AT91_PIN_PB14, 0);    /* ETXER */
 186                 at91_set_B_periph(AT91_PIN_PB13, 0);    /* ETX3 */
 187                 at91_set_B_periph(AT91_PIN_PB12, 0);    /* ETX2 */
 188         }
 189
 190         eth_data = *data;
 191         platform_device_register(&at91rm9200_eth_device);
 192 }
 193 #else
 194 void __init at91_add_device_eth(struct at91_eth_data *data) {}
 195 #endif
 196
 197
 198 /* --------------------------------------------------------------------
 199  *  Compact Flash / PCMCIA
 200  * -------------------------------------------------------------------- */
 201
 202 #if defined(CONFIG_AT91_CF) || defined(CONFIG_AT91_CF_MODULE)
 203 static struct at91_cf_data cf_data;
 204
 205 static struct resource at91_cf_resources[] = {
 206         [0] = {
 207                 .start  = AT91_CF_BASE,
 208                 /* ties up CS4, CS5 and CS6 */
 209                 .end    = AT91_CF_BASE + (0x30000000 - 1),
 210                 .flags  = IORESOURCE_MEM | IORESOURCE_MEM_8AND16BIT,
 211         },
 212 };
 213
 214 static struct platform_device at91rm9200_cf_device = {
 215         .name           = "at91_cf",
 216         .id             = -1,
 217         .dev            = {
 218                                 .platform_data          = &cf_data,
 219         },
 220         .resource       = at91_cf_resources,
 221         .num_resources  = ARRAY_SIZE(at91_cf_resources),
 222 };
 223
 224 void __init at91_add_device_cf(struct at91_cf_data *data)
 225 {
 226         if (!data)
 227                 return;
 228
 229         /* input/irq */
 230         if (data->irq_pin) {
 231                 at91_set_gpio_input(data->irq_pin, 1);
 232                 at91_set_deglitch(data->irq_pin, 1);
 233         }
 234         at91_set_gpio_input(data->det_pin, 1);
 235         at91_set_deglitch(data->det_pin, 1);
 236
 237         /* outputs, initially off */
 238         if (data->vcc_pin)
 239                 at91_set_gpio_output(data->vcc_pin, 0);
 240         at91_set_gpio_output(data->rst_pin, 0);
 241
 242         /* force poweron defaults for these pins ... */
 243         at91_set_A_periph(AT91_PIN_PC9, 0);     /* A25/CFRNW */
 244         at91_set_A_periph(AT91_PIN_PC10, 0);    /* NCS4/CFCS */
 245         at91_set_A_periph(AT91_PIN_PC11, 0);    /* NCS5/CFCE1 */
 246         at91_set_A_periph(AT91_PIN_PC12, 0);    /* NCS6/CFCE2 */
 247
 248         cf_data = *data;
 249         platform_device_register(&at91rm9200_cf_device);
 250 }
 251 #else
 252 void __init at91_add_device_cf(struct at91_cf_data *data) {}
 253 #endif
 254
 255
 256 /* --------------------------------------------------------------------
 257  *  MMC / SD
 258  * -------------------------------------------------------------------- */
 259
 260 #if defined(CONFIG_MMC_AT91RM9200) || defined(CONFIG_MMC_AT91RM9200_MODULE)
 261 static u64 mmc_dmamask = 0xffffffffUL;
 262 static struct at91_mmc_data mmc_data;
 263
 264 static struct resource at91_mmc_resources[] = {
 265         [0] = {
 266                 .start  = AT91RM9200_BASE_MCI,
 267                 .end    = AT91RM9200_BASE_MCI + SZ_16K - 1,
 268                 .flags  = IORESOURCE_MEM,
 269         },
 270         [1] = {
 271                 .start  = AT91RM9200_ID_MCI,
 272                 .end    = AT91RM9200_ID_MCI,
 273                 .flags  = IORESOURCE_IRQ,
 274         },
 275 };
 276
 277 static struct platform_device at91rm9200_mmc_device = {
 278         .name           = "at91_mci",
 279         .id             = -1,
 280         .dev            = {
 281                                 .dma_mask               = &mmc_dmamask,
 282                                 .coherent_dma_mask      = 0xffffffff,
 283                                 .platform_data          = &mmc_data,
 284         },
 285         .resource       = at91_mmc_resources,
 286         .num_resources  = ARRAY_SIZE(at91_mmc_resources),
 287 };
 288
 289 void __init at91_add_device_mmc(struct at91_mmc_data *data)
 290 {
 291         if (!data)
 292                 return;
 293
 294         /* input/irq */
 295         if (data->det_pin) {
 296                 at91_set_gpio_input(data->det_pin, 1);
 297                 at91_set_deglitch(data->det_pin, 1);
 298         }
 299         if (data->wp_pin)
 300                 at91_set_gpio_input(data->wp_pin, 1);
 301
 302         /* CLK */
 303         at91_set_A_periph(AT91_PIN_PA27, 0);
 304
 305         if (data->is_b) {
 306                 /* CMD */
 307                 at91_set_B_periph(AT91_PIN_PA8, 0);
 308
 309                 /* DAT0, maybe DAT1..DAT3 */
 310                 at91_set_B_periph(AT91_PIN_PA9, 0);
 311                 if (data->wire4) {
 312                         at91_set_B_periph(AT91_PIN_PA10, 0);
 313                         at91_set_B_periph(AT91_PIN_PA11, 0);
 314                         at91_set_B_periph(AT91_PIN_PA12, 0);
 315                 }
 316         } else {
 317                 /* CMD */
 318                 at91_set_A_periph(AT91_PIN_PA28, 0);
 319
 320                 /* DAT0, maybe DAT1..DAT3 */
 321                 at91_set_A_periph(AT91_PIN_PA29, 0);
 322                 if (data->wire4) {
 323                         at91_set_B_periph(AT91_PIN_PB3, 0);
 324                         at91_set_B_periph(AT91_PIN_PB4, 0);
 325                         at91_set_B_periph(AT91_PIN_PB5, 0);
 326                 }
 327         }
 328
 329         mmc_data = *data;
 330         platform_device_register(&at91rm9200_mmc_device);
 331 }
 332 #else
 333 void __init at91_add_device_mmc(struct at91_mmc_data *data) {}
 334 #endif
 335
 336
 337 /* --------------------------------------------------------------------
 338  *  NAND / SmartMedia
 339  * -------------------------------------------------------------------- */
 340
 341 #if defined(CONFIG_MTD_NAND_AT91) || defined(CONFIG_MTD_NAND_AT91_MODULE)
 342 static struct at91_nand_data nand_data;
 343
 344 static struct resource at91_nand_resources[] = {
 345         {
 346                 .start  = AT91_SMARTMEDIA_BASE,
 347                 .end    = AT91_SMARTMEDIA_BASE + SZ_8M - 1,
 348                 .flags  = IORESOURCE_MEM,
 349         }
 350 };
 351
 352 static struct platform_device at91_nand_device = {
 353         .name           = "at91_nand",
 354         .id             = -1,
 355         .dev            = {
 356                                 .platform_data  = &nand_data,
 357         },
 358         .resource       = at91_nand_resources,
 359         .num_resources  = ARRAY_SIZE(at91_nand_resources),
 360 };
 361
 362 void __init at91_add_device_nand(struct at91_nand_data *data)
 363 {
 364         if (!data)
 365                 return;
 366
 367         /* enable pin */
 368         if (data->enable_pin)
 369                 at91_set_gpio_output(data->enable_pin, 1);
 370
 371         /* ready/busy pin */
 372         if (data->rdy_pin)
 373                 at91_set_gpio_input(data->rdy_pin, 1);
 374
 375         /* card detect pin */
 376         if (data->det_pin)
 377                 at91_set_gpio_input(data->det_pin, 1);
 378
 379         at91_set_A_periph(AT91_PIN_PC1, 0);             /* SMOE */
 380         at91_set_A_periph(AT91_PIN_PC3, 0);             /* SMWE */
 381
 382         nand_data = *data;
 383         platform_device_register(&at91_nand_device);
 384 }
 385 #else
 386 void __init at91_add_device_nand(struct at91_nand_data *data) {}
 387 #endif
 388
 389
 390 /* --------------------------------------------------------------------
 391  *  TWI (i2c)
 392  * -------------------------------------------------------------------- */
 393
 394 #if defined(CONFIG_I2C_AT91) || defined(CONFIG_I2C_AT91_MODULE)
 395 static struct platform_device at91rm9200_twi_device = {
 396         .name           = "at91_i2c",
 397         .id             = -1,
 398         .num_resources  = 0,
 399 };
 400
 401 void __init at91_add_device_i2c(void)
 402 {
 403         /* pins used for TWI interface */
 404         at91_set_A_periph(AT91_PIN_PA25, 0);            /* TWD */
 405         at91_set_multi_drive(AT91_PIN_PA25, 1);
 406
 407         at91_set_A_periph(AT91_PIN_PA26, 0);            /* TWCK */
 408         at91_set_multi_drive(AT91_PIN_PA26, 1);
 409
 410         platform_device_register(&at91rm9200_twi_device);
 411 }
 412 #else
 413 void __init at91_add_device_i2c(void) {}
 414 #endif
 415
 416
 417 /* --------------------------------------------------------------------
 418  *  SPI
 419  * -------------------------------------------------------------------- */
 420
 421 #if defined(CONFIG_SPI_AT91) || defined(CONFIG_SPI_AT91_MODULE) || defined(CONFIG_AT91_SPI) || defined(CONFIG_AT91_SPI_MODULE)
 422 static u64 spi_dmamask = 0xffffffffUL;
 423
 424 static struct resource at91_spi_resources[] = {
 425         [0] = {
 426                 .start  = AT91RM9200_BASE_SPI,
 427                 .end    = AT91RM9200_BASE_SPI + SZ_16K - 1,
 428                 .flags  = IORESOURCE_MEM,
 429         },
 430         [1] = {
 431                 .start  = AT91RM9200_ID_SPI,
 432                 .end    = AT91RM9200_ID_SPI,
 433                 .flags  = IORESOURCE_IRQ,
 434         },
 435 };
 436
 437 static struct platform_device at91rm9200_spi_device = {
 438         .name           = "at91_spi",
 439         .id             = 0,
 440         .dev            = {
 441                 .dma_mask               = &spi_dmamask,
 442                 .coherent_dma_mask      = 0xffffffff,
 443         },
 444         .resource       = at91_spi_resources,
 445         .num_resources  = ARRAY_SIZE(at91_spi_resources),
 446 };
 447
 448 static const unsigned at91_spi_standard_cs[4] = { AT91_PIN_PA3, AT91_PIN_PA4, AT91_PIN_PA5, AT91_PIN_PA6 };
 449
 450 void __init at91_add_device_spi(struct spi_board_info *devices, int nr_devices)
 451 {
 452         int i;
 453         unsigned long cs_pin;
 454
 455         at91_set_A_periph(AT91_PIN_PA0, 0);     /* MISO */
 456         at91_set_A_periph(AT91_PIN_PA1, 0);     /* MOSI */
 457         at91_set_A_periph(AT91_PIN_PA2, 0);     /* SPCK */
 458
 459         /* Enable SPI chip-selects */
 460         for (i = 0; i < nr_devices; i++) {
 461                 if (devices[i].controller_data)
 462                         cs_pin = (unsigned long) devices[i].controller_data;
 463                 else
 464                         cs_pin = at91_spi_standard_cs[devices[i].chip_select];
 465
 466 #ifdef CONFIG_SPI_AT91_MANUAL_CS
 467                 at91_set_gpio_output(cs_pin, 1);
 468 #else
 469                 at91_set_A_periph(cs_pin, 0);
 470 #endif
 471
 472                 /* pass chip-select pin to driver */
 473                 devices[i].controller_data = (void *) cs_pin;
 474         }
 475
 476         spi_register_board_info(devices, nr_devices);
 477         at91_clock_associate("spi0_clk", &at91rm9200_spi_device.dev, "spi");
 478         platform_device_register(&at91rm9200_spi_device);
 479 }
 480 #else
 481 void __init at91_add_device_spi(struct spi_board_info *devices, int nr_devices) {}
 482 #endif
 483
 484
 485 /* --------------------------------------------------------------------
 486  *  RTC
 487  * -------------------------------------------------------------------- */
 488
 489 #if defined(CONFIG_RTC_DRV_AT91) || defined(CONFIG_RTC_DRV_AT91_MODULE)
 490 static struct platform_device at91rm9200_rtc_device = {
 491         .name           = "at91_rtc",
 492         .id             = -1,
 493         .num_resources  = 0,
 494 };
 495
 496 static void __init at91_add_device_rtc(void)
 497 {
 498         platform_device_register(&at91rm9200_rtc_device);
 499 }
 500 #else
 501 static void __init at91_add_device_rtc(void) {}
 502 #endif
 503
 504
 505 /* --------------------------------------------------------------------
 506  *  Watchdog
 507  * -------------------------------------------------------------------- */
 508
 509 #if defined(CONFIG_AT91_WATCHDOG) || defined(CONFIG_AT91_WATCHDOG_MODULE)
 510 static struct platform_device at91rm9200_wdt_device = {
 511         .name           = "at91_wdt",
 512         .id             = -1,
 513         .num_resources  = 0,
 514 };
 515
 516 static void __init at91_add_device_watchdog(void)
 517 {
 518         platform_device_register(&at91rm9200_wdt_device);
 519 }
 520 #else
 521 static void __init at91_add_device_watchdog(void) {}
 522 #endif
 523
 524
 525 /* --------------------------------------------------------------------
 526  *  LEDs
 527  * -------------------------------------------------------------------- */
 528
 529 #if defined(CONFIG_LEDS)
 530 u8 at91_leds_cpu;
 531 u8 at91_leds_timer;
 532
 533 void __init at91_init_leds(u8 cpu_led, u8 timer_led)
 534 {
 535         at91_leds_cpu   = cpu_led;
 536         at91_leds_timer = timer_led;
 537 }
 538 #else
 539 void __init at91_init_leds(u8 cpu_led, u8 timer_led) {}
 540 #endif
 541
 542
 543 /* --------------------------------------------------------------------
 544  *  UART
 545  * -------------------------------------------------------------------- */
 546
 547 #if defined(CONFIG_SERIAL_ATMEL)
 548 static struct resource dbgu_resources[] = {
 549         [0] = {
 550                 .start  = AT91_VA_BASE_SYS + AT91_DBGU,
 551                 .end    = AT91_VA_BASE_SYS + AT91_DBGU + SZ_512 - 1,
 552                 .flags  = IORESOURCE_MEM,
 553         },
 554         [1] = {
 555                 .start  = AT91_ID_SYS,
 556                 .end    = AT91_ID_SYS,
 557                 .flags  = IORESOURCE_IRQ,
 558         },
 559 };
 560
 561 static struct atmel_uart_data dbgu_data = {
 562         .use_dma_tx     = 0,
 563         .use_dma_rx     = 0,            /* DBGU not capable of receive DMA */
 564         .regs           = (void __iomem *)(AT91_VA_BASE_SYS + AT91_DBGU),
 565 };
 566
 567 static struct platform_device at91rm9200_dbgu_device = {
 568         .name           = "atmel_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  = AT91RM9200_BASE_US0,
 587                 .end    = AT91RM9200_BASE_US0 + SZ_16K - 1,
 588                 .flags  = IORESOURCE_MEM,
 589         },
 590         [1] = {
 591                 .start  = AT91RM9200_ID_US0,
 592                 .end    = AT91RM9200_ID_US0,
 593                 .flags  = IORESOURCE_IRQ,
 594         },
 595 };
 596
 597 static struct atmel_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           = "atmel_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  = AT91RM9200_BASE_US1,
 629                 .end    = AT91RM9200_BASE_US1 + SZ_16K - 1,
 630                 .flags  = IORESOURCE_MEM,
 631         },
 632         [1] = {
 633                 .start  = AT91RM9200_ID_US1,
 634                 .end    = AT91RM9200_ID_US1,
 635                 .flags  = IORESOURCE_IRQ,
 636         },
 637 };
 638
 639 static struct atmel_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           = "atmel_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  = AT91RM9200_BASE_US2,
 670                 .end    = AT91RM9200_BASE_US2 + SZ_16K - 1,
 671                 .flags  = IORESOURCE_MEM,
 672         },
 673         [1] = {
 674                 .start  = AT91RM9200_ID_US2,
 675                 .end    = AT91RM9200_ID_US2,
 676                 .flags  = IORESOURCE_IRQ,
 677         },
 678 };
 679
 680 static struct atmel_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           = "atmel_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  = AT91RM9200_BASE_US3,
 705                 .end    = AT91RM9200_BASE_US3 + SZ_16K - 1,
 706                 .flags  = IORESOURCE_MEM,
 707         },
 708         [1] = {
 709                 .start  = AT91RM9200_ID_US3,
 710                 .end    = AT91RM9200_ID_US3,
 711                 .flags  = IORESOURCE_IRQ,
 712         },
 713 };
 714
 715 static struct atmel_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           = "atmel_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[ATMEL_MAX_UART];     /* the UARTs to use */
 738 struct platform_device *atmel_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 < ATMEL_MAX_UART)
 780                 atmel_default_console_device = at91_uarts[config->console_tty];
 781         if (!atmel_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 < ATMEL_MAX_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);