arch/arm/mach-at91rm9200/at91rm9200_devices.c

   1 /*
   2  * arch/arm/mach-at91rm9200/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/arch/board.h>
  19 #include <asm/arch/gpio.h>
  20 #include <asm/arch/at91rm9200.h>
  21 #include <asm/arch/at91rm9200_mc.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 usbh_resources[] = {
  38         [0] = {
  39                 .start  = AT91RM9200_UHP_BASE,
  40                 .end    = AT91RM9200_UHP_BASE + SZ_1M - 1,
  41                 .flags  = IORESOURCE_MEM,
  42         },
  43         [1] = {
  44                 .start  = AT91RM9200_ID_UHP,
  45                 .end    = AT91RM9200_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       = usbh_resources,
  59         .num_resources  = ARRAY_SIZE(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 udc_resources[] = {
  83         [0] = {
  84                 .start  = AT91RM9200_BASE_UDP,
  85                 .end    = AT91RM9200_BASE_UDP + SZ_16K - 1,
  86                 .flags  = IORESOURCE_MEM,
  87         },
  88         [1] = {
  89                 .start  = AT91RM9200_ID_UDP,
  90                 .end    = AT91RM9200_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       = udc_resources,
 102         .num_resources  = ARRAY_SIZE(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 eth_resources[] = {
 134         [0] = {
 135                 .start  = AT91_VA_BASE_EMAC,
 136                 .end    = AT91_VA_BASE_EMAC + SZ_16K - 1,
 137                 .flags  = IORESOURCE_MEM,
 138         },
 139         [1] = {
 140                 .start  = AT91RM9200_ID_EMAC,
 141                 .end    = AT91RM9200_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       = eth_resources,
 155         .num_resources  = ARRAY_SIZE(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 #define CF_BASE         AT91_CHIPSELECT_4
 207
 208 static struct resource cf_resources[] = {
 209         [0] = {
 210                 .start  = CF_BASE,
 211                 /* ties up CS4, CS5 and CS6 */
 212                 .end    = CF_BASE + (0x30000000 - 1),
 213                 .flags  = IORESOURCE_MEM | IORESOURCE_MEM_8AND16BIT,
 214         },
 215 };
 216
 217 static struct platform_device at91rm9200_cf_device = {
 218         .name           = "at91_cf",
 219         .id             = -1,
 220         .dev            = {
 221                                 .platform_data          = &cf_data,
 222         },
 223         .resource       = cf_resources,
 224         .num_resources  = ARRAY_SIZE(cf_resources),
 225 };
 226
 227 void __init at91_add_device_cf(struct at91_cf_data *data)
 228 {
 229         unsigned int csa;
 230
 231         if (!data)
 232                 return;
 233
 234         data->chipselect = 4;           /* can only use EBI ChipSelect 4 */
 235
 236         /* CF takes over CS4, CS5, CS6 */
 237         csa = at91_sys_read(AT91_EBI_CSA);
 238         at91_sys_write(AT91_EBI_CSA, csa | AT91_EBI_CS4A_SMC_COMPACTFLASH);
 239
 240         /*
 241          * Static memory controller timing adjustments.
 242          * REVISIT:  these timings are in terms of MCK cycles, so
 243          * when MCK changes (cpufreq etc) so must these values...
 244          */
 245         at91_sys_write(AT91_SMC_CSR(4),
 246                                   AT91_SMC_ACSS_STD
 247                                 | AT91_SMC_DBW_16
 248                                 | AT91_SMC_BAT
 249                                 | AT91_SMC_WSEN
 250                                 | AT91_SMC_NWS_(32)     /* wait states */
 251                                 | AT91_SMC_RWSETUP_(6)  /* setup time */
 252                                 | AT91_SMC_RWHOLD_(4)   /* hold time */
 253         );
 254
 255         /* input/irq */
 256         if (data->irq_pin) {
 257                 at91_set_gpio_input(data->irq_pin, 1);
 258                 at91_set_deglitch(data->irq_pin, 1);
 259         }
 260         at91_set_gpio_input(data->det_pin, 1);
 261         at91_set_deglitch(data->det_pin, 1);
 262
 263         /* outputs, initially off */
 264         if (data->vcc_pin)
 265                 at91_set_gpio_output(data->vcc_pin, 0);
 266         at91_set_gpio_output(data->rst_pin, 0);
 267
 268         /* force poweron defaults for these pins ... */
 269         at91_set_A_periph(AT91_PIN_PC9, 0);     /* A25/CFRNW */
 270         at91_set_A_periph(AT91_PIN_PC10, 0);    /* NCS4/CFCS */
 271         at91_set_A_periph(AT91_PIN_PC11, 0);    /* NCS5/CFCE1 */
 272         at91_set_A_periph(AT91_PIN_PC12, 0);    /* NCS6/CFCE2 */
 273
 274         /* nWAIT is _not_ a default setting */
 275         at91_set_A_periph(AT91_PIN_PC6, 1);     /* nWAIT */
 276
 277         cf_data = *data;
 278         platform_device_register(&at91rm9200_cf_device);
 279 }
 280 #else
 281 void __init at91_add_device_cf(struct at91_cf_data *data) {}
 282 #endif
 283
 284
 285 /* --------------------------------------------------------------------
 286  *  MMC / SD
 287  * -------------------------------------------------------------------- */
 288
 289 #if defined(CONFIG_MMC_AT91) || defined(CONFIG_MMC_AT91_MODULE)
 290 static u64 mmc_dmamask = 0xffffffffUL;
 291 static struct at91_mmc_data mmc_data;
 292
 293 static struct resource mmc_resources[] = {
 294         [0] = {
 295                 .start  = AT91RM9200_BASE_MCI,
 296                 .end    = AT91RM9200_BASE_MCI + SZ_16K - 1,
 297                 .flags  = IORESOURCE_MEM,
 298         },
 299         [1] = {
 300                 .start  = AT91RM9200_ID_MCI,
 301                 .end    = AT91RM9200_ID_MCI,
 302                 .flags  = IORESOURCE_IRQ,
 303         },
 304 };
 305
 306 static struct platform_device at91rm9200_mmc_device = {
 307         .name           = "at91_mci",
 308         .id             = -1,
 309         .dev            = {
 310                                 .dma_mask               = &mmc_dmamask,
 311                                 .coherent_dma_mask      = 0xffffffff,
 312                                 .platform_data          = &mmc_data,
 313         },
 314         .resource       = mmc_resources,
 315         .num_resources  = ARRAY_SIZE(mmc_resources),
 316 };
 317
 318 void __init at91_add_device_mmc(struct at91_mmc_data *data)
 319 {
 320         if (!data)
 321                 return;
 322
 323         /* input/irq */
 324         if (data->det_pin) {
 325                 at91_set_gpio_input(data->det_pin, 1);
 326                 at91_set_deglitch(data->det_pin, 1);
 327         }
 328         if (data->wp_pin)
 329                 at91_set_gpio_input(data->wp_pin, 1);
 330         if (data->vcc_pin)
 331                 at91_set_gpio_output(data->vcc_pin, 0);
 332
 333         /* CLK */
 334         at91_set_A_periph(AT91_PIN_PA27, 0);
 335
 336         if (data->slot_b) {
 337                 /* CMD */
 338                 at91_set_B_periph(AT91_PIN_PA8, 1);
 339
 340                 /* DAT0, maybe DAT1..DAT3 */
 341                 at91_set_B_periph(AT91_PIN_PA9, 1);
 342                 if (data->wire4) {
 343                         at91_set_B_periph(AT91_PIN_PA10, 1);
 344                         at91_set_B_periph(AT91_PIN_PA11, 1);
 345                         at91_set_B_periph(AT91_PIN_PA12, 1);
 346                 }
 347         } else {
 348                 /* CMD */
 349                 at91_set_A_periph(AT91_PIN_PA28, 1);
 350
 351                 /* DAT0, maybe DAT1..DAT3 */
 352                 at91_set_A_periph(AT91_PIN_PA29, 1);
 353                 if (data->wire4) {
 354                         at91_set_B_periph(AT91_PIN_PB3, 1);
 355                         at91_set_B_periph(AT91_PIN_PB4, 1);
 356                         at91_set_B_periph(AT91_PIN_PB5, 1);
 357                 }
 358         }
 359
 360         mmc_data = *data;
 361         platform_device_register(&at91rm9200_mmc_device);
 362 }
 363 #else
 364 void __init at91_add_device_mmc(struct at91_mmc_data *data) {}
 365 #endif
 366
 367
 368 /* --------------------------------------------------------------------
 369  *  NAND / SmartMedia
 370  * -------------------------------------------------------------------- */
 371
 372 #if defined(CONFIG_MTD_NAND_AT91) || defined(CONFIG_MTD_NAND_AT91_MODULE)
 373 static struct at91_nand_data nand_data;
 374
 375 #define NAND_BASE       AT91_CHIPSELECT_3
 376
 377 static struct resource nand_resources[] = {
 378         {
 379                 .start  = NAND_BASE,
 380                 .end    = NAND_BASE + SZ_8M - 1,
 381                 .flags  = IORESOURCE_MEM,
 382         }
 383 };
 384
 385 static struct platform_device at91rm9200_nand_device = {
 386         .name           = "at91_nand",
 387         .id             = -1,
 388         .dev            = {
 389                                 .platform_data  = &nand_data,
 390         },
 391         .resource       = nand_resources,
 392         .num_resources  = ARRAY_SIZE(nand_resources),
 393 };
 394
 395 void __init at91_add_device_nand(struct at91_nand_data *data)
 396 {
 397         unsigned int csa;
 398
 399         if (!data)
 400                 return;
 401
 402         /* enable the address range of CS3 */
 403         csa = at91_sys_read(AT91_EBI_CSA);
 404         at91_sys_write(AT91_EBI_CSA, csa | AT91_EBI_CS3A_SMC_SMARTMEDIA);
 405
 406         /* set the bus interface characteristics */
 407         at91_sys_write(AT91_SMC_CSR(3), AT91_SMC_ACSS_STD | AT91_SMC_DBW_8 | AT91_SMC_WSEN
 408                 | AT91_SMC_NWS_(5)
 409                 | AT91_SMC_TDF_(1)
 410                 | AT91_SMC_RWSETUP_(0)  /* tDS Data Set up Time 30 - ns */
 411                 | AT91_SMC_RWHOLD_(1)   /* tDH Data Hold Time 20 - ns */
 412         );
 413
 414         /* enable pin */
 415         if (data->enable_pin)
 416                 at91_set_gpio_output(data->enable_pin, 1);
 417
 418         /* ready/busy pin */
 419         if (data->rdy_pin)
 420                 at91_set_gpio_input(data->rdy_pin, 1);
 421
 422         /* card detect pin */
 423         if (data->det_pin)
 424                 at91_set_gpio_input(data->det_pin, 1);
 425
 426         at91_set_A_periph(AT91_PIN_PC1, 0);             /* SMOE */
 427         at91_set_A_periph(AT91_PIN_PC3, 0);             /* SMWE */
 428
 429         nand_data = *data;
 430         platform_device_register(&at91rm9200_nand_device);
 431 }
 432 #else
 433 void __init at91_add_device_nand(struct at91_nand_data *data) {}
 434 #endif
 435
 436
 437 /* --------------------------------------------------------------------
 438  *  TWI (i2c)
 439  * -------------------------------------------------------------------- */
 440
 441 #if defined(CONFIG_I2C_AT91) || defined(CONFIG_I2C_AT91_MODULE)
 442
 443 static struct resource twi_resources[] = {
 444         [0] = {
 445                 .start  = AT91RM9200_BASE_TWI,
 446                 .end    = AT91RM9200_BASE_TWI + SZ_16K - 1,
 447                 .flags  = IORESOURCE_MEM,
 448         },
 449         [1] = {
 450                 .start  = AT91RM9200_ID_TWI,
 451                 .end    = AT91RM9200_ID_TWI,
 452                 .flags  = IORESOURCE_IRQ,
 453         },
 454 };
 455
 456 static struct platform_device at91rm9200_twi_device = {
 457         .name           = "at91_i2c",
 458         .id             = -1,
 459         .resource       = twi_resources,
 460         .num_resources  = ARRAY_SIZE(twi_resources),
 461 };
 462
 463 void __init at91_add_device_i2c(void)
 464 {
 465         /* pins used for TWI interface */
 466         at91_set_A_periph(AT91_PIN_PA25, 0);            /* TWD */
 467         at91_set_multi_drive(AT91_PIN_PA25, 1);
 468
 469         at91_set_A_periph(AT91_PIN_PA26, 0);            /* TWCK */
 470         at91_set_multi_drive(AT91_PIN_PA26, 1);
 471
 472         platform_device_register(&at91rm9200_twi_device);
 473 }
 474 #else
 475 void __init at91_add_device_i2c(void) {}
 476 #endif
 477
 478
 479 /* --------------------------------------------------------------------
 480  *  SPI
 481  * -------------------------------------------------------------------- */
 482
 483 #if defined(CONFIG_SPI_AT91) || defined(CONFIG_SPI_AT91_MODULE) || defined(CONFIG_AT91_SPI) || defined(CONFIG_AT91_SPI_MODULE)
 484 static u64 spi_dmamask = 0xffffffffUL;
 485
 486 static struct resource spi_resources[] = {
 487         [0] = {
 488                 .start  = AT91RM9200_BASE_SPI,
 489                 .end    = AT91RM9200_BASE_SPI + SZ_16K - 1,
 490                 .flags  = IORESOURCE_MEM,
 491         },
 492         [1] = {
 493                 .start  = AT91RM9200_ID_SPI,
 494                 .end    = AT91RM9200_ID_SPI,
 495                 .flags  = IORESOURCE_IRQ,
 496         },
 497 };
 498
 499 static struct platform_device at91rm9200_spi_device = {
 500         .name           = "at91_spi",
 501         .id             = 0,
 502         .dev            = {
 503                                 .dma_mask               = &spi_dmamask,
 504                                 .coherent_dma_mask      = 0xffffffff,
 505         },
 506         .resource       = spi_resources,
 507         .num_resources  = ARRAY_SIZE(spi_resources),
 508 };
 509
 510 static const unsigned spi_standard_cs[4] = { AT91_PIN_PA3, AT91_PIN_PA4, AT91_PIN_PA5, AT91_PIN_PA6 };
 511
 512 void __init at91_add_device_spi(struct spi_board_info *devices, int nr_devices)
 513 {
 514         int i;
 515         unsigned long cs_pin;
 516
 517         at91_set_A_periph(AT91_PIN_PA0, 0);     /* MISO */
 518         at91_set_A_periph(AT91_PIN_PA1, 0);     /* MOSI */
 519         at91_set_A_periph(AT91_PIN_PA2, 0);     /* SPCK */
 520
 521         /* Enable SPI chip-selects */
 522         for (i = 0; i < nr_devices; i++) {
 523                 if (devices[i].controller_data)
 524                         cs_pin = (unsigned long) devices[i].controller_data;
 525                 else
 526                         cs_pin = spi_standard_cs[devices[i].chip_select];
 527
 528 #ifdef CONFIG_SPI_AT91_MANUAL_CS
 529                 at91_set_gpio_output(cs_pin, 1);
 530 #else
 531                 at91_set_A_periph(cs_pin, 0);
 532 #endif
 533
 534                 /* pass chip-select pin to driver */
 535                 devices[i].controller_data = (void *) cs_pin;
 536         }
 537
 538         spi_register_board_info(devices, nr_devices);
 539         at91_clock_associate("spi_clk", &at91rm9200_spi_device.dev, "spi");
 540         platform_device_register(&at91rm9200_spi_device);
 541 }
 542 #else
 543 void __init at91_add_device_spi(struct spi_board_info *devices, int nr_devices) {}
 544 #endif
 545
 546
 547 /* --------------------------------------------------------------------
 548  *  RTC
 549  * -------------------------------------------------------------------- */
 550
 551 #if defined(CONFIG_RTC_DRV_AT91RM9200) || defined(CONFIG_RTC_DRV_AT91RM9200_MODULE)
 552 static struct platform_device at91rm9200_rtc_device = {
 553         .name           = "at91_rtc",
 554         .id             = -1,
 555         .num_resources  = 0,
 556 };
 557
 558 static void __init at91_add_device_rtc(void)
 559 {
 560         platform_device_register(&at91rm9200_rtc_device);
 561 }
 562 #else
 563 static void __init at91_add_device_rtc(void) {}
 564 #endif
 565
 566
 567 /* --------------------------------------------------------------------
 568  *  Watchdog
 569  * -------------------------------------------------------------------- */
 570
 571 #if defined(CONFIG_AT91RM9200_WATCHDOG) || defined(CONFIG_AT91RM9200_WATCHDOG_MODULE)
 572 static struct platform_device at91rm9200_wdt_device = {
 573         .name           = "at91_wdt",
 574         .id             = -1,
 575         .num_resources  = 0,
 576 };
 577
 578 static void __init at91_add_device_watchdog(void)
 579 {
 580         platform_device_register(&at91rm9200_wdt_device);
 581 }
 582 #else
 583 static void __init at91_add_device_watchdog(void) {}
 584 #endif
 585
 586
 587 /* --------------------------------------------------------------------
 588  *  LEDs
 589  * -------------------------------------------------------------------- */
 590
 591 #if defined(CONFIG_LEDS)
 592 u8 at91_leds_cpu;
 593 u8 at91_leds_timer;
 594
 595 void __init at91_init_leds(u8 cpu_led, u8 timer_led)
 596 {
 597         at91_leds_cpu   = cpu_led;
 598         at91_leds_timer = timer_led;
 599 }
 600 #else
 601 void __init at91_init_leds(u8 cpu_led, u8 timer_led) {}
 602 #endif
 603
 604
 605 /* --------------------------------------------------------------------
 606  *  UART
 607  * -------------------------------------------------------------------- */
 608
 609 #if defined(CONFIG_SERIAL_ATMEL)
 610 static struct resource dbgu_resources[] = {
 611         [0] = {
 612                 .start  = AT91_VA_BASE_SYS + AT91_DBGU,
 613                 .end    = AT91_VA_BASE_SYS + AT91_DBGU + SZ_512 - 1,
 614                 .flags  = IORESOURCE_MEM,
 615         },
 616         [1] = {
 617                 .start  = AT91_ID_SYS,
 618                 .end    = AT91_ID_SYS,
 619                 .flags  = IORESOURCE_IRQ,
 620         },
 621 };
 622
 623 static struct atmel_uart_data dbgu_data = {
 624         .use_dma_tx     = 0,
 625         .use_dma_rx     = 0,            /* DBGU not capable of receive DMA */
 626         .regs           = (void __iomem *)(AT91_VA_BASE_SYS + AT91_DBGU),
 627 };
 628
 629 static struct platform_device at91rm9200_dbgu_device = {
 630         .name           = "atmel_usart",
 631         .id             = 0,
 632         .dev            = {
 633                                 .platform_data  = &dbgu_data,
 634                                 .coherent_dma_mask = 0xffffffff,
 635         },
 636         .resource       = dbgu_resources,
 637         .num_resources  = ARRAY_SIZE(dbgu_resources),
 638 };
 639
 640 static inline void configure_dbgu_pins(void)
 641 {
 642         at91_set_A_periph(AT91_PIN_PA30, 0);            /* DRXD */
 643         at91_set_A_periph(AT91_PIN_PA31, 1);            /* DTXD */
 644 }
 645
 646 static struct resource uart0_resources[] = {
 647         [0] = {
 648                 .start  = AT91RM9200_BASE_US0,
 649                 .end    = AT91RM9200_BASE_US0 + SZ_16K - 1,
 650                 .flags  = IORESOURCE_MEM,
 651         },
 652         [1] = {
 653                 .start  = AT91RM9200_ID_US0,
 654                 .end    = AT91RM9200_ID_US0,
 655                 .flags  = IORESOURCE_IRQ,
 656         },
 657 };
 658
 659 static struct atmel_uart_data uart0_data = {
 660         .use_dma_tx     = 1,
 661         .use_dma_rx     = 1,
 662 };
 663
 664 static struct platform_device at91rm9200_uart0_device = {
 665         .name           = "atmel_usart",
 666         .id             = 1,
 667         .dev            = {
 668                                 .platform_data  = &uart0_data,
 669                                 .coherent_dma_mask = 0xffffffff,
 670         },
 671         .resource       = uart0_resources,
 672         .num_resources  = ARRAY_SIZE(uart0_resources),
 673 };
 674
 675 static inline void configure_usart0_pins(void)
 676 {
 677         at91_set_A_periph(AT91_PIN_PA17, 1);            /* TXD0 */
 678         at91_set_A_periph(AT91_PIN_PA18, 0);            /* RXD0 */
 679         at91_set_A_periph(AT91_PIN_PA20, 0);            /* CTS0 */
 680
 681         /*
 682          * AT91RM9200 Errata #39 - RTS0 is not internally connected to PA21.
 683          *  We need to drive the pin manually.  Default is off (RTS is active low).
 684          */
 685         at91_set_gpio_output(AT91_PIN_PA21, 1);
 686 }
 687
 688 static struct resource uart1_resources[] = {
 689         [0] = {
 690                 .start  = AT91RM9200_BASE_US1,
 691                 .end    = AT91RM9200_BASE_US1 + SZ_16K - 1,
 692                 .flags  = IORESOURCE_MEM,
 693         },
 694         [1] = {
 695                 .start  = AT91RM9200_ID_US1,
 696                 .end    = AT91RM9200_ID_US1,
 697                 .flags  = IORESOURCE_IRQ,
 698         },
 699 };
 700
 701 static struct atmel_uart_data uart1_data = {
 702         .use_dma_tx     = 1,
 703         .use_dma_rx     = 1,
 704 };
 705
 706 static struct platform_device at91rm9200_uart1_device = {
 707         .name           = "atmel_usart",
 708         .id             = 2,
 709         .dev            = {
 710                                 .platform_data  = &uart1_data,
 711                                 .coherent_dma_mask = 0xffffffff,
 712         },
 713         .resource       = uart1_resources,
 714         .num_resources  = ARRAY_SIZE(uart1_resources),
 715 };
 716
 717 static inline void configure_usart1_pins(void)
 718 {
 719         at91_set_A_periph(AT91_PIN_PB18, 0);            /* RI1 */
 720         at91_set_A_periph(AT91_PIN_PB19, 0);            /* DTR1 */
 721         at91_set_A_periph(AT91_PIN_PB20, 1);            /* TXD1 */
 722         at91_set_A_periph(AT91_PIN_PB21, 0);            /* RXD1 */
 723         at91_set_A_periph(AT91_PIN_PB23, 0);            /* DCD1 */
 724         at91_set_A_periph(AT91_PIN_PB24, 0);            /* CTS1 */
 725         at91_set_A_periph(AT91_PIN_PB25, 0);            /* DSR1 */
 726         at91_set_A_periph(AT91_PIN_PB26, 0);            /* RTS1 */
 727 }
 728
 729 static struct resource uart2_resources[] = {
 730         [0] = {
 731                 .start  = AT91RM9200_BASE_US2,
 732                 .end    = AT91RM9200_BASE_US2 + SZ_16K - 1,
 733                 .flags  = IORESOURCE_MEM,
 734         },
 735         [1] = {
 736                 .start  = AT91RM9200_ID_US2,
 737                 .end    = AT91RM9200_ID_US2,
 738                 .flags  = IORESOURCE_IRQ,
 739         },
 740 };
 741
 742 static struct atmel_uart_data uart2_data = {
 743         .use_dma_tx     = 1,
 744         .use_dma_rx     = 1,
 745 };
 746
 747 static struct platform_device at91rm9200_uart2_device = {
 748         .name           = "atmel_usart",
 749         .id             = 3,
 750         .dev            = {
 751                                 .platform_data  = &uart2_data,
 752                                 .coherent_dma_mask = 0xffffffff,
 753         },
 754         .resource       = uart2_resources,
 755         .num_resources  = ARRAY_SIZE(uart2_resources),
 756 };
 757
 758 static inline void configure_usart2_pins(void)
 759 {
 760         at91_set_A_periph(AT91_PIN_PA22, 0);            /* RXD2 */
 761         at91_set_A_periph(AT91_PIN_PA23, 1);            /* TXD2 */
 762 }
 763
 764 static struct resource uart3_resources[] = {
 765         [0] = {
 766                 .start  = AT91RM9200_BASE_US3,
 767                 .end    = AT91RM9200_BASE_US3 + SZ_16K - 1,
 768                 .flags  = IORESOURCE_MEM,
 769         },
 770         [1] = {
 771                 .start  = AT91RM9200_ID_US3,
 772                 .end    = AT91RM9200_ID_US3,
 773                 .flags  = IORESOURCE_IRQ,
 774         },
 775 };
 776
 777 static struct atmel_uart_data uart3_data = {
 778         .use_dma_tx     = 1,
 779         .use_dma_rx     = 1,
 780 };
 781
 782 static struct platform_device at91rm9200_uart3_device = {
 783         .name           = "atmel_usart",
 784         .id             = 4,
 785         .dev            = {
 786                                 .platform_data  = &uart3_data,
 787                                 .coherent_dma_mask = 0xffffffff,
 788         },
 789         .resource       = uart3_resources,
 790         .num_resources  = ARRAY_SIZE(uart3_resources),
 791 };
 792
 793 static inline void configure_usart3_pins(void)
 794 {
 795         at91_set_B_periph(AT91_PIN_PA5, 1);             /* TXD3 */
 796         at91_set_B_periph(AT91_PIN_PA6, 0);             /* RXD3 */
 797 }
 798
 799 struct platform_device *at91_uarts[ATMEL_MAX_UART];     /* the UARTs to use */
 800 struct platform_device *atmel_default_console_device;   /* the serial console device */
 801
 802 void __init at91_init_serial(struct at91_uart_config *config)
 803 {
 804         int i;
 805
 806         /* Fill in list of supported UARTs */
 807         for (i = 0; i < config->nr_tty; i++) {
 808                 switch (config->tty_map[i]) {
 809                         case 0:
 810                                 configure_usart0_pins();
 811                                 at91_uarts[i] = &at91rm9200_uart0_device;
 812                                 at91_clock_associate("usart0_clk", &at91rm9200_uart0_device.dev, "usart");
 813                                 break;
 814                         case 1:
 815                                 configure_usart1_pins();
 816                                 at91_uarts[i] = &at91rm9200_uart1_device;
 817                                 at91_clock_associate("usart1_clk", &at91rm9200_uart1_device.dev, "usart");
 818                                 break;
 819                         case 2:
 820                                 configure_usart2_pins();
 821                                 at91_uarts[i] = &at91rm9200_uart2_device;
 822                                 at91_clock_associate("usart2_clk", &at91rm9200_uart2_device.dev, "usart");
 823                                 break;
 824                         case 3:
 825                                 configure_usart3_pins();
 826                                 at91_uarts[i] = &at91rm9200_uart3_device;
 827                                 at91_clock_associate("usart3_clk", &at91rm9200_uart3_device.dev, "usart");
 828                                 break;
 829                         case 4:
 830                                 configure_dbgu_pins();
 831                                 at91_uarts[i] = &at91rm9200_dbgu_device;
 832                                 at91_clock_associate("mck", &at91rm9200_dbgu_device.dev, "usart");
 833                                 break;
 834                         default:
 835                                 continue;
 836                 }
 837                 at91_uarts[i]->id = i;          /* update ID number to mapped ID */
 838         }
 839
 840         /* Set serial console device */
 841         if (config->console_tty < ATMEL_MAX_UART)
 842                 atmel_default_console_device = at91_uarts[config->console_tty];
 843         if (!atmel_default_console_device)
 844                 printk(KERN_INFO "AT91: No default serial console defined.\n");
 845 }
 846
 847 void __init at91_add_device_serial(void)
 848 {
 849         int i;
 850
 851         for (i = 0; i < ATMEL_MAX_UART; i++) {
 852                 if (at91_uarts[i])
 853                         platform_device_register(at91_uarts[i]);
 854         }
 855 }
 856 #else
 857 void __init at91_init_serial(struct at91_uart_config *config) {}
 858 void __init at91_add_device_serial(void) {}
 859 #endif
 860
 861
 862 /* -------------------------------------------------------------------- */
 863
 864 /*
 865  * These devices are always present and don't need any board-specific
 866  * setup.
 867  */
 868 static int __init at91_add_standard_devices(void)
 869 {
 870         at91_add_device_rtc();
 871         at91_add_device_watchdog();
 872         return 0;
 873 }
 874
 875 arch_initcall(at91_add_standard_devices);