arch/arm/mach-at91/at91rm9200_devices.c

   1 /*
   2  * arch/arm/mach-at91/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
  26 /* --------------------------------------------------------------------
  27  *  USB Host
  28  * -------------------------------------------------------------------- */
  29
  30 #if defined(CONFIG_USB_OHCI_HCD) || defined(CONFIG_USB_OHCI_HCD_MODULE)
  31 static u64 ohci_dmamask = 0xffffffffUL;
  32 static struct at91_usbh_data usbh_data;
  33
  34 static struct resource usbh_resources[] = {
  35         [0] = {
  36                 .start  = AT91RM9200_UHP_BASE,
  37                 .end    = AT91RM9200_UHP_BASE + SZ_1M - 1,
  38                 .flags  = IORESOURCE_MEM,
  39         },
  40         [1] = {
  41                 .start  = AT91RM9200_ID_UHP,
  42                 .end    = AT91RM9200_ID_UHP,
  43                 .flags  = IORESOURCE_IRQ,
  44         },
  45 };
  46
  47 static struct platform_device at91rm9200_usbh_device = {
  48         .name           = "at91_ohci",
  49         .id             = -1,
  50         .dev            = {
  51                                 .dma_mask               = &ohci_dmamask,
  52                                 .coherent_dma_mask      = 0xffffffff,
  53                                 .platform_data          = &usbh_data,
  54         },
  55         .resource       = usbh_resources,
  56         .num_resources  = ARRAY_SIZE(usbh_resources),
  57 };
  58
  59 void __init at91_add_device_usbh(struct at91_usbh_data *data)
  60 {
  61         if (!data)
  62                 return;
  63
  64         usbh_data = *data;
  65         platform_device_register(&at91rm9200_usbh_device);
  66 }
  67 #else
  68 void __init at91_add_device_usbh(struct at91_usbh_data *data) {}
  69 #endif
  70
  71
  72 /* --------------------------------------------------------------------
  73  *  USB Device (Gadget)
  74  * -------------------------------------------------------------------- */
  75
  76 #ifdef CONFIG_USB_GADGET_AT91
  77 static struct at91_udc_data udc_data;
  78
  79 static struct resource udc_resources[] = {
  80         [0] = {
  81                 .start  = AT91RM9200_BASE_UDP,
  82                 .end    = AT91RM9200_BASE_UDP + SZ_16K - 1,
  83                 .flags  = IORESOURCE_MEM,
  84         },
  85         [1] = {
  86                 .start  = AT91RM9200_ID_UDP,
  87                 .end    = AT91RM9200_ID_UDP,
  88                 .flags  = IORESOURCE_IRQ,
  89         },
  90 };
  91
  92 static struct platform_device at91rm9200_udc_device = {
  93         .name           = "at91_udc",
  94         .id             = -1,
  95         .dev            = {
  96                                 .platform_data          = &udc_data,
  97         },
  98         .resource       = udc_resources,
  99         .num_resources  = ARRAY_SIZE(udc_resources),
 100 };
 101
 102 void __init at91_add_device_udc(struct at91_udc_data *data)
 103 {
 104         if (!data)
 105                 return;
 106
 107         if (data->vbus_pin) {
 108                 at91_set_gpio_input(data->vbus_pin, 0);
 109                 at91_set_deglitch(data->vbus_pin, 1);
 110         }
 111         if (data->pullup_pin)
 112                 at91_set_gpio_output(data->pullup_pin, 0);
 113
 114         udc_data = *data;
 115         platform_device_register(&at91rm9200_udc_device);
 116 }
 117 #else
 118 void __init at91_add_device_udc(struct at91_udc_data *data) {}
 119 #endif
 120
 121
 122 /* --------------------------------------------------------------------
 123  *  Ethernet
 124  * -------------------------------------------------------------------- */
 125
 126 #if defined(CONFIG_ARM_AT91_ETHER) || defined(CONFIG_ARM_AT91_ETHER_MODULE)
 127 static u64 eth_dmamask = 0xffffffffUL;
 128 static struct at91_eth_data eth_data;
 129
 130 static struct resource eth_resources[] = {
 131         [0] = {
 132                 .start  = AT91_VA_BASE_EMAC,
 133                 .end    = AT91_VA_BASE_EMAC + SZ_16K - 1,
 134                 .flags  = IORESOURCE_MEM,
 135         },
 136         [1] = {
 137                 .start  = AT91RM9200_ID_EMAC,
 138                 .end    = AT91RM9200_ID_EMAC,
 139                 .flags  = IORESOURCE_IRQ,
 140         },
 141 };
 142
 143 static struct platform_device at91rm9200_eth_device = {
 144         .name           = "at91_ether",
 145         .id             = -1,
 146         .dev            = {
 147                                 .dma_mask               = &eth_dmamask,
 148                                 .coherent_dma_mask      = 0xffffffff,
 149                                 .platform_data          = &eth_data,
 150         },
 151         .resource       = eth_resources,
 152         .num_resources  = ARRAY_SIZE(eth_resources),
 153 };
 154
 155 void __init at91_add_device_eth(struct at91_eth_data *data)
 156 {
 157         if (!data)
 158                 return;
 159
 160         if (data->phy_irq_pin) {
 161                 at91_set_gpio_input(data->phy_irq_pin, 0);
 162                 at91_set_deglitch(data->phy_irq_pin, 1);
 163         }
 164
 165         /* Pins used for MII and RMII */
 166         at91_set_A_periph(AT91_PIN_PA16, 0);    /* EMDIO */
 167         at91_set_A_periph(AT91_PIN_PA15, 0);    /* EMDC */
 168         at91_set_A_periph(AT91_PIN_PA14, 0);    /* ERXER */
 169         at91_set_A_periph(AT91_PIN_PA13, 0);    /* ERX1 */
 170         at91_set_A_periph(AT91_PIN_PA12, 0);    /* ERX0 */
 171         at91_set_A_periph(AT91_PIN_PA11, 0);    /* ECRS_ECRSDV */
 172         at91_set_A_periph(AT91_PIN_PA10, 0);    /* ETX1 */
 173         at91_set_A_periph(AT91_PIN_PA9, 0);     /* ETX0 */
 174         at91_set_A_periph(AT91_PIN_PA8, 0);     /* ETXEN */
 175         at91_set_A_periph(AT91_PIN_PA7, 0);     /* ETXCK_EREFCK */
 176
 177         if (!data->is_rmii) {
 178                 at91_set_B_periph(AT91_PIN_PB19, 0);    /* ERXCK */
 179                 at91_set_B_periph(AT91_PIN_PB18, 0);    /* ECOL */
 180                 at91_set_B_periph(AT91_PIN_PB17, 0);    /* ERXDV */
 181                 at91_set_B_periph(AT91_PIN_PB16, 0);    /* ERX3 */
 182                 at91_set_B_periph(AT91_PIN_PB15, 0);    /* ERX2 */
 183                 at91_set_B_periph(AT91_PIN_PB14, 0);    /* ETXER */
 184                 at91_set_B_periph(AT91_PIN_PB13, 0);    /* ETX3 */
 185                 at91_set_B_periph(AT91_PIN_PB12, 0);    /* ETX2 */
 186         }
 187
 188         eth_data = *data;
 189         platform_device_register(&at91rm9200_eth_device);
 190 }
 191 #else
 192 void __init at91_add_device_eth(struct at91_eth_data *data) {}
 193 #endif
 194
 195
 196 /* --------------------------------------------------------------------
 197  *  Compact Flash / PCMCIA
 198  * -------------------------------------------------------------------- */
 199
 200 #if defined(CONFIG_AT91_CF) || defined(CONFIG_AT91_CF_MODULE)
 201 static struct at91_cf_data cf_data;
 202
 203 #define CF_BASE         AT91_CHIPSELECT_4
 204
 205 static struct resource cf_resources[] = {
 206         [0] = {
 207                 .start  = CF_BASE,
 208                 /* ties up CS4, CS5 and CS6 */
 209                 .end    = 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       = cf_resources,
 221         .num_resources  = ARRAY_SIZE(cf_resources),
 222 };
 223
 224 void __init at91_add_device_cf(struct at91_cf_data *data)
 225 {
 226         unsigned int csa;
 227
 228         if (!data)
 229                 return;
 230
 231         data->chipselect = 4;           /* can only use EBI ChipSelect 4 */
 232
 233         /* CF takes over CS4, CS5, CS6 */
 234         csa = at91_sys_read(AT91_EBI_CSA);
 235         at91_sys_write(AT91_EBI_CSA, csa | AT91_EBI_CS4A_SMC_COMPACTFLASH);
 236
 237         /*
 238          * Static memory controller timing adjustments.
 239          * REVISIT:  these timings are in terms of MCK cycles, so
 240          * when MCK changes (cpufreq etc) so must these values...
 241          */
 242         at91_sys_write(AT91_SMC_CSR(4),
 243                                   AT91_SMC_ACSS_STD
 244                                 | AT91_SMC_DBW_16
 245                                 | AT91_SMC_BAT
 246                                 | AT91_SMC_WSEN
 247                                 | AT91_SMC_NWS_(32)     /* wait states */
 248                                 | AT91_SMC_RWSETUP_(6)  /* setup time */
 249                                 | AT91_SMC_RWHOLD_(4)   /* hold time */
 250         );
 251
 252         /* input/irq */
 253         if (data->irq_pin) {
 254                 at91_set_gpio_input(data->irq_pin, 1);
 255                 at91_set_deglitch(data->irq_pin, 1);
 256         }
 257         at91_set_gpio_input(data->det_pin, 1);
 258         at91_set_deglitch(data->det_pin, 1);
 259
 260         /* outputs, initially off */
 261         if (data->vcc_pin)
 262                 at91_set_gpio_output(data->vcc_pin, 0);
 263         at91_set_gpio_output(data->rst_pin, 0);
 264
 265         /* force poweron defaults for these pins ... */
 266         at91_set_A_periph(AT91_PIN_PC9, 0);     /* A25/CFRNW */
 267         at91_set_A_periph(AT91_PIN_PC10, 0);    /* NCS4/CFCS */
 268         at91_set_A_periph(AT91_PIN_PC11, 0);    /* NCS5/CFCE1 */
 269         at91_set_A_periph(AT91_PIN_PC12, 0);    /* NCS6/CFCE2 */
 270
 271         /* nWAIT is _not_ a default setting */
 272         at91_set_A_periph(AT91_PIN_PC6, 1);     /* nWAIT */
 273
 274         cf_data = *data;
 275         platform_device_register(&at91rm9200_cf_device);
 276 }
 277 #else
 278 void __init at91_add_device_cf(struct at91_cf_data *data) {}
 279 #endif
 280
 281
 282 /* --------------------------------------------------------------------
 283  *  MMC / SD
 284  * -------------------------------------------------------------------- */
 285
 286 #if defined(CONFIG_MMC_AT91) || defined(CONFIG_MMC_AT91_MODULE)
 287 static u64 mmc_dmamask = 0xffffffffUL;
 288 static struct at91_mmc_data mmc_data;
 289
 290 static struct resource mmc_resources[] = {
 291         [0] = {
 292                 .start  = AT91RM9200_BASE_MCI,
 293                 .end    = AT91RM9200_BASE_MCI + SZ_16K - 1,
 294                 .flags  = IORESOURCE_MEM,
 295         },
 296         [1] = {
 297                 .start  = AT91RM9200_ID_MCI,
 298                 .end    = AT91RM9200_ID_MCI,
 299                 .flags  = IORESOURCE_IRQ,
 300         },
 301 };
 302
 303 static struct platform_device at91rm9200_mmc_device = {
 304         .name           = "at91_mci",
 305         .id             = -1,
 306         .dev            = {
 307                                 .dma_mask               = &mmc_dmamask,
 308                                 .coherent_dma_mask      = 0xffffffff,
 309                                 .platform_data          = &mmc_data,
 310         },
 311         .resource       = mmc_resources,
 312         .num_resources  = ARRAY_SIZE(mmc_resources),
 313 };
 314
 315 void __init at91_add_device_mmc(short mmc_id, struct at91_mmc_data *data)
 316 {
 317         if (!data)
 318                 return;
 319
 320         /* input/irq */
 321         if (data->det_pin) {
 322                 at91_set_gpio_input(data->det_pin, 1);
 323                 at91_set_deglitch(data->det_pin, 1);
 324         }
 325         if (data->wp_pin)
 326                 at91_set_gpio_input(data->wp_pin, 1);
 327         if (data->vcc_pin)
 328                 at91_set_gpio_output(data->vcc_pin, 0);
 329
 330         /* CLK */
 331         at91_set_A_periph(AT91_PIN_PA27, 0);
 332
 333         if (data->slot_b) {
 334                 /* CMD */
 335                 at91_set_B_periph(AT91_PIN_PA8, 1);
 336
 337                 /* DAT0, maybe DAT1..DAT3 */
 338                 at91_set_B_periph(AT91_PIN_PA9, 1);
 339                 if (data->wire4) {
 340                         at91_set_B_periph(AT91_PIN_PA10, 1);
 341                         at91_set_B_periph(AT91_PIN_PA11, 1);
 342                         at91_set_B_periph(AT91_PIN_PA12, 1);
 343                 }
 344         } else {
 345                 /* CMD */
 346                 at91_set_A_periph(AT91_PIN_PA28, 1);
 347
 348                 /* DAT0, maybe DAT1..DAT3 */
 349                 at91_set_A_periph(AT91_PIN_PA29, 1);
 350                 if (data->wire4) {
 351                         at91_set_B_periph(AT91_PIN_PB3, 1);
 352                         at91_set_B_periph(AT91_PIN_PB4, 1);
 353                         at91_set_B_periph(AT91_PIN_PB5, 1);
 354                 }
 355         }
 356
 357         mmc_data = *data;
 358         platform_device_register(&at91rm9200_mmc_device);
 359 }
 360 #else
 361 void __init at91_add_device_mmc(short mmc_id, struct at91_mmc_data *data) {}
 362 #endif
 363
 364
 365 /* --------------------------------------------------------------------
 366  *  NAND / SmartMedia
 367  * -------------------------------------------------------------------- */
 368
 369 #if defined(CONFIG_MTD_NAND_AT91) || defined(CONFIG_MTD_NAND_AT91_MODULE)
 370 static struct at91_nand_data nand_data;
 371
 372 #define NAND_BASE       AT91_CHIPSELECT_3
 373
 374 static struct resource nand_resources[] = {
 375         {
 376                 .start  = NAND_BASE,
 377                 .end    = NAND_BASE + SZ_8M - 1,
 378                 .flags  = IORESOURCE_MEM,
 379         }
 380 };
 381
 382 static struct platform_device at91rm9200_nand_device = {
 383         .name           = "at91_nand",
 384         .id             = -1,
 385         .dev            = {
 386                                 .platform_data  = &nand_data,
 387         },
 388         .resource       = nand_resources,
 389         .num_resources  = ARRAY_SIZE(nand_resources),
 390 };
 391
 392 void __init at91_add_device_nand(struct at91_nand_data *data)
 393 {
 394         unsigned int csa;
 395
 396         if (!data)
 397                 return;
 398
 399         /* enable the address range of CS3 */
 400         csa = at91_sys_read(AT91_EBI_CSA);
 401         at91_sys_write(AT91_EBI_CSA, csa | AT91_EBI_CS3A_SMC_SMARTMEDIA);
 402
 403         /* set the bus interface characteristics */
 404         at91_sys_write(AT91_SMC_CSR(3), AT91_SMC_ACSS_STD | AT91_SMC_DBW_8 | AT91_SMC_WSEN
 405                 | AT91_SMC_NWS_(5)
 406                 | AT91_SMC_TDF_(1)
 407                 | AT91_SMC_RWSETUP_(0)  /* tDS Data Set up Time 30 - ns */
 408                 | AT91_SMC_RWHOLD_(1)   /* tDH Data Hold Time 20 - ns */
 409         );
 410
 411         /* enable pin */
 412         if (data->enable_pin)
 413                 at91_set_gpio_output(data->enable_pin, 1);
 414
 415         /* ready/busy pin */
 416         if (data->rdy_pin)
 417                 at91_set_gpio_input(data->rdy_pin, 1);
 418
 419         /* card detect pin */
 420         if (data->det_pin)
 421                 at91_set_gpio_input(data->det_pin, 1);
 422
 423         at91_set_A_periph(AT91_PIN_PC1, 0);             /* SMOE */
 424         at91_set_A_periph(AT91_PIN_PC3, 0);             /* SMWE */
 425
 426         nand_data = *data;
 427         platform_device_register(&at91rm9200_nand_device);
 428 }
 429 #else
 430 void __init at91_add_device_nand(struct at91_nand_data *data) {}
 431 #endif
 432
 433
 434 /* --------------------------------------------------------------------
 435  *  TWI (i2c)
 436  * -------------------------------------------------------------------- */
 437
 438 #if defined(CONFIG_I2C_AT91) || defined(CONFIG_I2C_AT91_MODULE)
 439
 440 static struct resource twi_resources[] = {
 441         [0] = {
 442                 .start  = AT91RM9200_BASE_TWI,
 443                 .end    = AT91RM9200_BASE_TWI + SZ_16K - 1,
 444                 .flags  = IORESOURCE_MEM,
 445         },
 446         [1] = {
 447                 .start  = AT91RM9200_ID_TWI,
 448                 .end    = AT91RM9200_ID_TWI,
 449                 .flags  = IORESOURCE_IRQ,
 450         },
 451 };
 452
 453 static struct platform_device at91rm9200_twi_device = {
 454         .name           = "at91_i2c",
 455         .id             = -1,
 456         .resource       = twi_resources,
 457         .num_resources  = ARRAY_SIZE(twi_resources),
 458 };
 459
 460 void __init at91_add_device_i2c(void)
 461 {
 462         /* pins used for TWI interface */
 463         at91_set_A_periph(AT91_PIN_PA25, 0);            /* TWD */
 464         at91_set_multi_drive(AT91_PIN_PA25, 1);
 465
 466         at91_set_A_periph(AT91_PIN_PA26, 0);            /* TWCK */
 467         at91_set_multi_drive(AT91_PIN_PA26, 1);
 468
 469         platform_device_register(&at91rm9200_twi_device);
 470 }
 471 #else
 472 void __init at91_add_device_i2c(void) {}
 473 #endif
 474
 475
 476 /* --------------------------------------------------------------------
 477  *  SPI
 478  * -------------------------------------------------------------------- */
 479
 480 #if defined(CONFIG_SPI_ATMEL) || defined(CONFIG_SPI_ATMEL_MODULE)
 481 static u64 spi_dmamask = 0xffffffffUL;
 482
 483 static struct resource spi_resources[] = {
 484         [0] = {
 485                 .start  = AT91RM9200_BASE_SPI,
 486                 .end    = AT91RM9200_BASE_SPI + SZ_16K - 1,
 487                 .flags  = IORESOURCE_MEM,
 488         },
 489         [1] = {
 490                 .start  = AT91RM9200_ID_SPI,
 491                 .end    = AT91RM9200_ID_SPI,
 492                 .flags  = IORESOURCE_IRQ,
 493         },
 494 };
 495
 496 static struct platform_device at91rm9200_spi_device = {
 497         .name           = "atmel_spi",
 498         .id             = 0,
 499         .dev            = {
 500                                 .dma_mask               = &spi_dmamask,
 501                                 .coherent_dma_mask      = 0xffffffff,
 502         },
 503         .resource       = spi_resources,
 504         .num_resources  = ARRAY_SIZE(spi_resources),
 505 };
 506
 507 static const unsigned spi_standard_cs[4] = { AT91_PIN_PA3, AT91_PIN_PA4, AT91_PIN_PA5, AT91_PIN_PA6 };
 508
 509 void __init at91_add_device_spi(struct spi_board_info *devices, int nr_devices)
 510 {
 511         int i;
 512         unsigned long cs_pin;
 513
 514         at91_set_A_periph(AT91_PIN_PA0, 0);     /* MISO */
 515         at91_set_A_periph(AT91_PIN_PA1, 0);     /* MOSI */
 516         at91_set_A_periph(AT91_PIN_PA2, 0);     /* SPCK */
 517
 518         /* Enable SPI chip-selects */
 519         for (i = 0; i < nr_devices; i++) {
 520                 if (devices[i].controller_data)
 521                         cs_pin = (unsigned long) devices[i].controller_data;
 522                 else
 523                         cs_pin = spi_standard_cs[devices[i].chip_select];
 524
 525                 /* enable chip-select pin */
 526                 at91_set_gpio_output(cs_pin, 1);
 527
 528                 /* pass chip-select pin to driver */
 529                 devices[i].controller_data = (void *) cs_pin;
 530         }
 531
 532         spi_register_board_info(devices, nr_devices);
 533         platform_device_register(&at91rm9200_spi_device);
 534 }
 535 #else
 536 void __init at91_add_device_spi(struct spi_board_info *devices, int nr_devices) {}
 537 #endif
 538
 539
 540 /* --------------------------------------------------------------------
 541  *  RTC
 542  * -------------------------------------------------------------------- */
 543
 544 #if defined(CONFIG_RTC_DRV_AT91RM9200) || defined(CONFIG_RTC_DRV_AT91RM9200_MODULE)
 545 static struct platform_device at91rm9200_rtc_device = {
 546         .name           = "at91_rtc",
 547         .id             = -1,
 548         .num_resources  = 0,
 549 };
 550
 551 static void __init at91_add_device_rtc(void)
 552 {
 553         platform_device_register(&at91rm9200_rtc_device);
 554 }
 555 #else
 556 static void __init at91_add_device_rtc(void) {}
 557 #endif
 558
 559
 560 /* --------------------------------------------------------------------
 561  *  Watchdog
 562  * -------------------------------------------------------------------- */
 563
 564 #if defined(CONFIG_AT91RM9200_WATCHDOG) || defined(CONFIG_AT91RM9200_WATCHDOG_MODULE)
 565 static struct platform_device at91rm9200_wdt_device = {
 566         .name           = "at91_wdt",
 567         .id             = -1,
 568         .num_resources  = 0,
 569 };
 570
 571 static void __init at91_add_device_watchdog(void)
 572 {
 573         platform_device_register(&at91rm9200_wdt_device);
 574 }
 575 #else
 576 static void __init at91_add_device_watchdog(void) {}
 577 #endif
 578
 579
 580 /* --------------------------------------------------------------------
 581  *  LEDs
 582  * -------------------------------------------------------------------- */
 583
 584 #if defined(CONFIG_LEDS)
 585 u8 at91_leds_cpu;
 586 u8 at91_leds_timer;
 587
 588 void __init at91_init_leds(u8 cpu_led, u8 timer_led)
 589 {
 590         /* Enable GPIO to access the LEDs */
 591         at91_set_gpio_output(cpu_led, 1);
 592         at91_set_gpio_output(timer_led, 1);
 593
 594         at91_leds_cpu   = cpu_led;
 595         at91_leds_timer = timer_led;
 596 }
 597 #else
 598 void __init at91_init_leds(u8 cpu_led, u8 timer_led) {}
 599 #endif
 600
 601
 602 /* --------------------------------------------------------------------
 603  *  UART
 604  * -------------------------------------------------------------------- */
 605
 606 #if defined(CONFIG_SERIAL_ATMEL)
 607 static struct resource dbgu_resources[] = {
 608         [0] = {
 609                 .start  = AT91_VA_BASE_SYS + AT91_DBGU,
 610                 .end    = AT91_VA_BASE_SYS + AT91_DBGU + SZ_512 - 1,
 611                 .flags  = IORESOURCE_MEM,
 612         },
 613         [1] = {
 614                 .start  = AT91_ID_SYS,
 615                 .end    = AT91_ID_SYS,
 616                 .flags  = IORESOURCE_IRQ,
 617         },
 618 };
 619
 620 static struct atmel_uart_data dbgu_data = {
 621         .use_dma_tx     = 0,
 622         .use_dma_rx     = 0,            /* DBGU not capable of receive DMA */
 623         .regs           = (void __iomem *)(AT91_VA_BASE_SYS + AT91_DBGU),
 624 };
 625
 626 static struct platform_device at91rm9200_dbgu_device = {
 627         .name           = "atmel_usart",
 628         .id             = 0,
 629         .dev            = {
 630                                 .platform_data  = &dbgu_data,
 631                                 .coherent_dma_mask = 0xffffffff,
 632         },
 633         .resource       = dbgu_resources,
 634         .num_resources  = ARRAY_SIZE(dbgu_resources),
 635 };
 636
 637 static inline void configure_dbgu_pins(void)
 638 {
 639         at91_set_A_periph(AT91_PIN_PA30, 0);            /* DRXD */
 640         at91_set_A_periph(AT91_PIN_PA31, 1);            /* DTXD */
 641 }
 642
 643 static struct resource uart0_resources[] = {
 644         [0] = {
 645                 .start  = AT91RM9200_BASE_US0,
 646                 .end    = AT91RM9200_BASE_US0 + SZ_16K - 1,
 647                 .flags  = IORESOURCE_MEM,
 648         },
 649         [1] = {
 650                 .start  = AT91RM9200_ID_US0,
 651                 .end    = AT91RM9200_ID_US0,
 652                 .flags  = IORESOURCE_IRQ,
 653         },
 654 };
 655
 656 static struct atmel_uart_data uart0_data = {
 657         .use_dma_tx     = 1,
 658         .use_dma_rx     = 1,
 659 };
 660
 661 static struct platform_device at91rm9200_uart0_device = {
 662         .name           = "atmel_usart",
 663         .id             = 1,
 664         .dev            = {
 665                                 .platform_data  = &uart0_data,
 666                                 .coherent_dma_mask = 0xffffffff,
 667         },
 668         .resource       = uart0_resources,
 669         .num_resources  = ARRAY_SIZE(uart0_resources),
 670 };
 671
 672 static inline void configure_usart0_pins(void)
 673 {
 674         at91_set_A_periph(AT91_PIN_PA17, 1);            /* TXD0 */
 675         at91_set_A_periph(AT91_PIN_PA18, 0);            /* RXD0 */
 676         at91_set_A_periph(AT91_PIN_PA20, 0);            /* CTS0 */
 677
 678         /*
 679          * AT91RM9200 Errata #39 - RTS0 is not internally connected to PA21.
 680          *  We need to drive the pin manually.  Default is off (RTS is active low).
 681          */
 682         at91_set_gpio_output(AT91_PIN_PA21, 1);
 683 }
 684
 685 static struct resource uart1_resources[] = {
 686         [0] = {
 687                 .start  = AT91RM9200_BASE_US1,
 688                 .end    = AT91RM9200_BASE_US1 + SZ_16K - 1,
 689                 .flags  = IORESOURCE_MEM,
 690         },
 691         [1] = {
 692                 .start  = AT91RM9200_ID_US1,
 693                 .end    = AT91RM9200_ID_US1,
 694                 .flags  = IORESOURCE_IRQ,
 695         },
 696 };
 697
 698 static struct atmel_uart_data uart1_data = {
 699         .use_dma_tx     = 1,
 700         .use_dma_rx     = 1,
 701 };
 702
 703 static struct platform_device at91rm9200_uart1_device = {
 704         .name           = "atmel_usart",
 705         .id             = 2,
 706         .dev            = {
 707                                 .platform_data  = &uart1_data,
 708                                 .coherent_dma_mask = 0xffffffff,
 709         },
 710         .resource       = uart1_resources,
 711         .num_resources  = ARRAY_SIZE(uart1_resources),
 712 };
 713
 714 static inline void configure_usart1_pins(void)
 715 {
 716         at91_set_A_periph(AT91_PIN_PB18, 0);            /* RI1 */
 717         at91_set_A_periph(AT91_PIN_PB19, 0);            /* DTR1 */
 718         at91_set_A_periph(AT91_PIN_PB20, 1);            /* TXD1 */
 719         at91_set_A_periph(AT91_PIN_PB21, 0);            /* RXD1 */
 720         at91_set_A_periph(AT91_PIN_PB23, 0);            /* DCD1 */
 721         at91_set_A_periph(AT91_PIN_PB24, 0);            /* CTS1 */
 722         at91_set_A_periph(AT91_PIN_PB25, 0);            /* DSR1 */
 723         at91_set_A_periph(AT91_PIN_PB26, 0);            /* RTS1 */
 724 }
 725
 726 static struct resource uart2_resources[] = {
 727         [0] = {
 728                 .start  = AT91RM9200_BASE_US2,
 729                 .end    = AT91RM9200_BASE_US2 + SZ_16K - 1,
 730                 .flags  = IORESOURCE_MEM,
 731         },
 732         [1] = {
 733                 .start  = AT91RM9200_ID_US2,
 734                 .end    = AT91RM9200_ID_US2,
 735                 .flags  = IORESOURCE_IRQ,
 736         },
 737 };
 738
 739 static struct atmel_uart_data uart2_data = {
 740         .use_dma_tx     = 1,
 741         .use_dma_rx     = 1,
 742 };
 743
 744 static struct platform_device at91rm9200_uart2_device = {
 745         .name           = "atmel_usart",
 746         .id             = 3,
 747         .dev            = {
 748                                 .platform_data  = &uart2_data,
 749                                 .coherent_dma_mask = 0xffffffff,
 750         },
 751         .resource       = uart2_resources,
 752         .num_resources  = ARRAY_SIZE(uart2_resources),
 753 };
 754
 755 static inline void configure_usart2_pins(void)
 756 {
 757         at91_set_A_periph(AT91_PIN_PA22, 0);            /* RXD2 */
 758         at91_set_A_periph(AT91_PIN_PA23, 1);            /* TXD2 */
 759 }
 760
 761 static struct resource uart3_resources[] = {
 762         [0] = {
 763                 .start  = AT91RM9200_BASE_US3,
 764                 .end    = AT91RM9200_BASE_US3 + SZ_16K - 1,
 765                 .flags  = IORESOURCE_MEM,
 766         },
 767         [1] = {
 768                 .start  = AT91RM9200_ID_US3,
 769                 .end    = AT91RM9200_ID_US3,
 770                 .flags  = IORESOURCE_IRQ,
 771         },
 772 };
 773
 774 static struct atmel_uart_data uart3_data = {
 775         .use_dma_tx     = 1,
 776         .use_dma_rx     = 1,
 777 };
 778
 779 static struct platform_device at91rm9200_uart3_device = {
 780         .name           = "atmel_usart",
 781         .id             = 4,
 782         .dev            = {
 783                                 .platform_data  = &uart3_data,
 784                                 .coherent_dma_mask = 0xffffffff,
 785         },
 786         .resource       = uart3_resources,
 787         .num_resources  = ARRAY_SIZE(uart3_resources),
 788 };
 789
 790 static inline void configure_usart3_pins(void)
 791 {
 792         at91_set_B_periph(AT91_PIN_PA5, 1);             /* TXD3 */
 793         at91_set_B_periph(AT91_PIN_PA6, 0);             /* RXD3 */
 794 }
 795
 796 struct platform_device *at91_uarts[ATMEL_MAX_UART];     /* the UARTs to use */
 797 struct platform_device *atmel_default_console_device;   /* the serial console device */
 798
 799 void __init at91_init_serial(struct at91_uart_config *config)
 800 {
 801         int i;
 802
 803         /* Fill in list of supported UARTs */
 804         for (i = 0; i < config->nr_tty; i++) {
 805                 switch (config->tty_map[i]) {
 806                         case 0:
 807                                 configure_usart0_pins();
 808                                 at91_uarts[i] = &at91rm9200_uart0_device;
 809                                 at91_clock_associate("usart0_clk", &at91rm9200_uart0_device.dev, "usart");
 810                                 break;
 811                         case 1:
 812                                 configure_usart1_pins();
 813                                 at91_uarts[i] = &at91rm9200_uart1_device;
 814                                 at91_clock_associate("usart1_clk", &at91rm9200_uart1_device.dev, "usart");
 815                                 break;
 816                         case 2:
 817                                 configure_usart2_pins();
 818                                 at91_uarts[i] = &at91rm9200_uart2_device;
 819                                 at91_clock_associate("usart2_clk", &at91rm9200_uart2_device.dev, "usart");
 820                                 break;
 821                         case 3:
 822                                 configure_usart3_pins();
 823                                 at91_uarts[i] = &at91rm9200_uart3_device;
 824                                 at91_clock_associate("usart3_clk", &at91rm9200_uart3_device.dev, "usart");
 825                                 break;
 826                         case 4:
 827                                 configure_dbgu_pins();
 828                                 at91_uarts[i] = &at91rm9200_dbgu_device;
 829                                 at91_clock_associate("mck", &at91rm9200_dbgu_device.dev, "usart");
 830                                 break;
 831                         default:
 832                                 continue;
 833                 }
 834                 at91_uarts[i]->id = i;          /* update ID number to mapped ID */
 835         }
 836
 837         /* Set serial console device */
 838         if (config->console_tty < ATMEL_MAX_UART)
 839                 atmel_default_console_device = at91_uarts[config->console_tty];
 840         if (!atmel_default_console_device)
 841                 printk(KERN_INFO "AT91: No default serial console defined.\n");
 842 }
 843
 844 void __init at91_add_device_serial(void)
 845 {
 846         int i;
 847
 848         for (i = 0; i < ATMEL_MAX_UART; i++) {
 849                 if (at91_uarts[i])
 850                         platform_device_register(at91_uarts[i]);
 851         }
 852 }
 853 #else
 854 void __init at91_init_serial(struct at91_uart_config *config) {}
 855 void __init at91_add_device_serial(void) {}
 856 #endif
 857
 858
 859 /* -------------------------------------------------------------------- */
 860
 861 /*
 862  * These devices are always present and don't need any board-specific
 863  * setup.
 864  */
 865 static int __init at91_add_standard_devices(void)
 866 {
 867         at91_add_device_rtc();
 868         at91_add_device_watchdog();
 869         return 0;
 870 }
 871
 872 arch_initcall(at91_add_standard_devices);