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/dma-mapping.h>
  17 #include <linux/platform_device.h>
  18 #include <linux/i2c-gpio.h>
  19
  20 #include <asm/arch/board.h>
  21 #include <asm/arch/gpio.h>
  22 #include <asm/arch/at91rm9200.h>
  23 #include <asm/arch/at91rm9200_mc.h>
  24
  25 #include "generic.h"
  26
  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 = DMA_BIT_MASK(32);
  34 static struct at91_usbh_data usbh_data;
  35
  36 static struct resource 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      = DMA_BIT_MASK(32),
  55                                 .platform_data          = &usbh_data,
  56         },
  57         .resource       = usbh_resources,
  58         .num_resources  = ARRAY_SIZE(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 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       = udc_resources,
 101         .num_resources  = ARRAY_SIZE(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 = DMA_BIT_MASK(32);
 130 static struct at91_eth_data eth_data;
 131
 132 static struct resource 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      = DMA_BIT_MASK(32),
 151                                 .platform_data          = &eth_data,
 152         },
 153         .resource       = eth_resources,
 154         .num_resources  = ARRAY_SIZE(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 #define CF_BASE         AT91_CHIPSELECT_4
 206
 207 static struct resource cf_resources[] = {
 208         [0] = {
 209                 .start  = CF_BASE,
 210                 /* ties up CS4, CS5 and CS6 */
 211                 .end    = CF_BASE + (0x30000000 - 1),
 212                 .flags  = IORESOURCE_MEM | IORESOURCE_MEM_8AND16BIT,
 213         },
 214 };
 215
 216 static struct platform_device at91rm9200_cf_device = {
 217         .name           = "at91_cf",
 218         .id             = -1,
 219         .dev            = {
 220                                 .platform_data          = &cf_data,
 221         },
 222         .resource       = cf_resources,
 223         .num_resources  = ARRAY_SIZE(cf_resources),
 224 };
 225
 226 void __init at91_add_device_cf(struct at91_cf_data *data)
 227 {
 228         unsigned int csa;
 229
 230         if (!data)
 231                 return;
 232
 233         data->chipselect = 4;           /* can only use EBI ChipSelect 4 */
 234
 235         /* CF takes over CS4, CS5, CS6 */
 236         csa = at91_sys_read(AT91_EBI_CSA);
 237         at91_sys_write(AT91_EBI_CSA, csa | AT91_EBI_CS4A_SMC_COMPACTFLASH);
 238
 239         /*
 240          * Static memory controller timing adjustments.
 241          * REVISIT:  these timings are in terms of MCK cycles, so
 242          * when MCK changes (cpufreq etc) so must these values...
 243          */
 244         at91_sys_write(AT91_SMC_CSR(4),
 245                                   AT91_SMC_ACSS_STD
 246                                 | AT91_SMC_DBW_16
 247                                 | AT91_SMC_BAT
 248                                 | AT91_SMC_WSEN
 249                                 | AT91_SMC_NWS_(32)     /* wait states */
 250                                 | AT91_SMC_RWSETUP_(6)  /* setup time */
 251                                 | AT91_SMC_RWHOLD_(4)   /* hold time */
 252         );
 253
 254         /* input/irq */
 255         if (data->irq_pin) {
 256                 at91_set_gpio_input(data->irq_pin, 1);
 257                 at91_set_deglitch(data->irq_pin, 1);
 258         }
 259         at91_set_gpio_input(data->det_pin, 1);
 260         at91_set_deglitch(data->det_pin, 1);
 261
 262         /* outputs, initially off */
 263         if (data->vcc_pin)
 264                 at91_set_gpio_output(data->vcc_pin, 0);
 265         at91_set_gpio_output(data->rst_pin, 0);
 266
 267         /* force poweron defaults for these pins ... */
 268         at91_set_A_periph(AT91_PIN_PC9, 0);     /* A25/CFRNW */
 269         at91_set_A_periph(AT91_PIN_PC10, 0);    /* NCS4/CFCS */
 270         at91_set_A_periph(AT91_PIN_PC11, 0);    /* NCS5/CFCE1 */
 271         at91_set_A_periph(AT91_PIN_PC12, 0);    /* NCS6/CFCE2 */
 272
 273         /* nWAIT is _not_ a default setting */
 274         at91_set_A_periph(AT91_PIN_PC6, 1);     /* nWAIT */
 275
 276         cf_data = *data;
 277         platform_device_register(&at91rm9200_cf_device);
 278 }
 279 #else
 280 void __init at91_add_device_cf(struct at91_cf_data *data) {}
 281 #endif
 282
 283
 284 /* --------------------------------------------------------------------
 285  *  MMC / SD
 286  * -------------------------------------------------------------------- */
 287
 288 #if defined(CONFIG_MMC_AT91) || defined(CONFIG_MMC_AT91_MODULE)
 289 static u64 mmc_dmamask = DMA_BIT_MASK(32);
 290 static struct at91_mmc_data mmc_data;
 291
 292 static struct resource mmc_resources[] = {
 293         [0] = {
 294                 .start  = AT91RM9200_BASE_MCI,
 295                 .end    = AT91RM9200_BASE_MCI + SZ_16K - 1,
 296                 .flags  = IORESOURCE_MEM,
 297         },
 298         [1] = {
 299                 .start  = AT91RM9200_ID_MCI,
 300                 .end    = AT91RM9200_ID_MCI,
 301                 .flags  = IORESOURCE_IRQ,
 302         },
 303 };
 304
 305 static struct platform_device at91rm9200_mmc_device = {
 306         .name           = "at91_mci",
 307         .id             = -1,
 308         .dev            = {
 309                                 .dma_mask               = &mmc_dmamask,
 310                                 .coherent_dma_mask      = DMA_BIT_MASK(32),
 311                                 .platform_data          = &mmc_data,
 312         },
 313         .resource       = mmc_resources,
 314         .num_resources  = ARRAY_SIZE(mmc_resources),
 315 };
 316
 317 void __init at91_add_device_mmc(short mmc_id, struct at91_mmc_data *data)
 318 {
 319         if (!data)
 320                 return;
 321
 322         /* input/irq */
 323         if (data->det_pin) {
 324                 at91_set_gpio_input(data->det_pin, 1);
 325                 at91_set_deglitch(data->det_pin, 1);
 326         }
 327         if (data->wp_pin)
 328                 at91_set_gpio_input(data->wp_pin, 1);
 329         if (data->vcc_pin)
 330                 at91_set_gpio_output(data->vcc_pin, 0);
 331
 332         /* CLK */
 333         at91_set_A_periph(AT91_PIN_PA27, 0);
 334
 335         if (data->slot_b) {
 336                 /* CMD */
 337                 at91_set_B_periph(AT91_PIN_PA8, 1);
 338
 339                 /* DAT0, maybe DAT1..DAT3 */
 340                 at91_set_B_periph(AT91_PIN_PA9, 1);
 341                 if (data->wire4) {
 342                         at91_set_B_periph(AT91_PIN_PA10, 1);
 343                         at91_set_B_periph(AT91_PIN_PA11, 1);
 344                         at91_set_B_periph(AT91_PIN_PA12, 1);
 345                 }
 346         } else {
 347                 /* CMD */
 348                 at91_set_A_periph(AT91_PIN_PA28, 1);
 349
 350                 /* DAT0, maybe DAT1..DAT3 */
 351                 at91_set_A_periph(AT91_PIN_PA29, 1);
 352                 if (data->wire4) {
 353                         at91_set_B_periph(AT91_PIN_PB3, 1);
 354                         at91_set_B_periph(AT91_PIN_PB4, 1);
 355                         at91_set_B_periph(AT91_PIN_PB5, 1);
 356                 }
 357         }
 358
 359         mmc_data = *data;
 360         platform_device_register(&at91rm9200_mmc_device);
 361 }
 362 #else
 363 void __init at91_add_device_mmc(short mmc_id, struct at91_mmc_data *data) {}
 364 #endif
 365
 366
 367 /* --------------------------------------------------------------------
 368  *  NAND / SmartMedia
 369  * -------------------------------------------------------------------- */
 370
 371 #if defined(CONFIG_MTD_NAND_AT91) || defined(CONFIG_MTD_NAND_AT91_MODULE)
 372 static struct at91_nand_data nand_data;
 373
 374 #define NAND_BASE       AT91_CHIPSELECT_3
 375
 376 static struct resource nand_resources[] = {
 377         {
 378                 .start  = NAND_BASE,
 379                 .end    = NAND_BASE + SZ_8M - 1,
 380                 .flags  = IORESOURCE_MEM,
 381         }
 382 };
 383
 384 static struct platform_device at91rm9200_nand_device = {
 385         .name           = "at91_nand",
 386         .id             = -1,
 387         .dev            = {
 388                                 .platform_data  = &nand_data,
 389         },
 390         .resource       = nand_resources,
 391         .num_resources  = ARRAY_SIZE(nand_resources),
 392 };
 393
 394 void __init at91_add_device_nand(struct at91_nand_data *data)
 395 {
 396         unsigned int csa;
 397
 398         if (!data)
 399                 return;
 400
 401         /* enable the address range of CS3 */
 402         csa = at91_sys_read(AT91_EBI_CSA);
 403         at91_sys_write(AT91_EBI_CSA, csa | AT91_EBI_CS3A_SMC_SMARTMEDIA);
 404
 405         /* set the bus interface characteristics */
 406         at91_sys_write(AT91_SMC_CSR(3), AT91_SMC_ACSS_STD | AT91_SMC_DBW_8 | AT91_SMC_WSEN
 407                 | AT91_SMC_NWS_(5)
 408                 | AT91_SMC_TDF_(1)
 409                 | AT91_SMC_RWSETUP_(0)  /* tDS Data Set up Time 30 - ns */
 410                 | AT91_SMC_RWHOLD_(1)   /* tDH Data Hold Time 20 - ns */
 411         );
 412
 413         /* enable pin */
 414         if (data->enable_pin)
 415                 at91_set_gpio_output(data->enable_pin, 1);
 416
 417         /* ready/busy pin */
 418         if (data->rdy_pin)
 419                 at91_set_gpio_input(data->rdy_pin, 1);
 420
 421         /* card detect pin */
 422         if (data->det_pin)
 423                 at91_set_gpio_input(data->det_pin, 1);
 424
 425         at91_set_A_periph(AT91_PIN_PC1, 0);             /* SMOE */
 426         at91_set_A_periph(AT91_PIN_PC3, 0);             /* SMWE */
 427
 428         nand_data = *data;
 429         platform_device_register(&at91rm9200_nand_device);
 430 }
 431 #else
 432 void __init at91_add_device_nand(struct at91_nand_data *data) {}
 433 #endif
 434
 435
 436 /* --------------------------------------------------------------------
 437  *  TWI (i2c)
 438  * -------------------------------------------------------------------- */
 439
 440 /*
 441  * Prefer the GPIO code since the TWI controller isn't robust
 442  * (gets overruns and underruns under load) and can only issue
 443  * repeated STARTs in one scenario (the driver doesn't yet handle them).
 444  */
 445 #if defined(CONFIG_I2C_GPIO) || defined(CONFIG_I2C_GPIO_MODULE)
 446
 447 static struct i2c_gpio_platform_data pdata = {
 448         .sda_pin                = AT91_PIN_PA25,
 449         .sda_is_open_drain      = 1,
 450         .scl_pin                = AT91_PIN_PA26,
 451         .scl_is_open_drain      = 1,
 452         .udelay                 = 2,            /* ~100 kHz */
 453 };
 454
 455 static struct platform_device at91rm9200_twi_device = {
 456         .name                   = "i2c-gpio",
 457         .id                     = -1,
 458         .dev.platform_data      = &pdata,
 459 };
 460
 461 void __init at91_add_device_i2c(struct i2c_board_info *devices, int nr_devices)
 462 {
 463         at91_set_GPIO_periph(AT91_PIN_PA25, 1);         /* TWD (SDA) */
 464         at91_set_multi_drive(AT91_PIN_PA25, 1);
 465
 466         at91_set_GPIO_periph(AT91_PIN_PA26, 1);         /* TWCK (SCL) */
 467         at91_set_multi_drive(AT91_PIN_PA26, 1);
 468
 469         i2c_register_board_info(0, devices, nr_devices);
 470         platform_device_register(&at91rm9200_twi_device);
 471 }
 472
 473 #elif defined(CONFIG_I2C_AT91) || defined(CONFIG_I2C_AT91_MODULE)
 474
 475 static struct resource twi_resources[] = {
 476         [0] = {
 477                 .start  = AT91RM9200_BASE_TWI,
 478                 .end    = AT91RM9200_BASE_TWI + SZ_16K - 1,
 479                 .flags  = IORESOURCE_MEM,
 480         },
 481         [1] = {
 482                 .start  = AT91RM9200_ID_TWI,
 483                 .end    = AT91RM9200_ID_TWI,
 484                 .flags  = IORESOURCE_IRQ,
 485         },
 486 };
 487
 488 static struct platform_device at91rm9200_twi_device = {
 489         .name           = "at91_i2c",
 490         .id             = -1,
 491         .resource       = twi_resources,
 492         .num_resources  = ARRAY_SIZE(twi_resources),
 493 };
 494
 495 void __init at91_add_device_i2c(struct i2c_board_info *devices, int nr_devices)
 496 {
 497         /* pins used for TWI interface */
 498         at91_set_A_periph(AT91_PIN_PA25, 0);            /* TWD */
 499         at91_set_multi_drive(AT91_PIN_PA25, 1);
 500
 501         at91_set_A_periph(AT91_PIN_PA26, 0);            /* TWCK */
 502         at91_set_multi_drive(AT91_PIN_PA26, 1);
 503
 504         i2c_register_board_info(0, devices, nr_devices);
 505         platform_device_register(&at91rm9200_twi_device);
 506 }
 507 #else
 508 void __init at91_add_device_i2c(struct i2c_board_info *devices, int nr_devices) {}
 509 #endif
 510
 511
 512 /* --------------------------------------------------------------------
 513  *  SPI
 514  * -------------------------------------------------------------------- */
 515
 516 #if defined(CONFIG_SPI_ATMEL) || defined(CONFIG_SPI_ATMEL_MODULE)
 517 static u64 spi_dmamask = DMA_BIT_MASK(32);
 518
 519 static struct resource spi_resources[] = {
 520         [0] = {
 521                 .start  = AT91RM9200_BASE_SPI,
 522                 .end    = AT91RM9200_BASE_SPI + SZ_16K - 1,
 523                 .flags  = IORESOURCE_MEM,
 524         },
 525         [1] = {
 526                 .start  = AT91RM9200_ID_SPI,
 527                 .end    = AT91RM9200_ID_SPI,
 528                 .flags  = IORESOURCE_IRQ,
 529         },
 530 };
 531
 532 static struct platform_device at91rm9200_spi_device = {
 533         .name           = "atmel_spi",
 534         .id             = 0,
 535         .dev            = {
 536                                 .dma_mask               = &spi_dmamask,
 537                                 .coherent_dma_mask      = DMA_BIT_MASK(32),
 538         },
 539         .resource       = spi_resources,
 540         .num_resources  = ARRAY_SIZE(spi_resources),
 541 };
 542
 543 static const unsigned spi_standard_cs[4] = { AT91_PIN_PA3, AT91_PIN_PA4, AT91_PIN_PA5, AT91_PIN_PA6 };
 544
 545 void __init at91_add_device_spi(struct spi_board_info *devices, int nr_devices)
 546 {
 547         int i;
 548         unsigned long cs_pin;
 549
 550         at91_set_A_periph(AT91_PIN_PA0, 0);     /* MISO */
 551         at91_set_A_periph(AT91_PIN_PA1, 0);     /* MOSI */
 552         at91_set_A_periph(AT91_PIN_PA2, 0);     /* SPCK */
 553
 554         /* Enable SPI chip-selects */
 555         for (i = 0; i < nr_devices; i++) {
 556                 if (devices[i].controller_data)
 557                         cs_pin = (unsigned long) devices[i].controller_data;
 558                 else
 559                         cs_pin = spi_standard_cs[devices[i].chip_select];
 560
 561                 /* enable chip-select pin */
 562                 at91_set_gpio_output(cs_pin, 1);
 563
 564                 /* pass chip-select pin to driver */
 565                 devices[i].controller_data = (void *) cs_pin;
 566         }
 567
 568         spi_register_board_info(devices, nr_devices);
 569         platform_device_register(&at91rm9200_spi_device);
 570 }
 571 #else
 572 void __init at91_add_device_spi(struct spi_board_info *devices, int nr_devices) {}
 573 #endif
 574
 575
 576 /* --------------------------------------------------------------------
 577  *  RTC
 578  * -------------------------------------------------------------------- */
 579
 580 #if defined(CONFIG_RTC_DRV_AT91RM9200) || defined(CONFIG_RTC_DRV_AT91RM9200_MODULE)
 581 static struct platform_device at91rm9200_rtc_device = {
 582         .name           = "at91_rtc",
 583         .id             = -1,
 584         .num_resources  = 0,
 585 };
 586
 587 static void __init at91_add_device_rtc(void)
 588 {
 589         platform_device_register(&at91rm9200_rtc_device);
 590 }
 591 #else
 592 static void __init at91_add_device_rtc(void) {}
 593 #endif
 594
 595
 596 /* --------------------------------------------------------------------
 597  *  Watchdog
 598  * -------------------------------------------------------------------- */
 599
 600 #if defined(CONFIG_AT91RM9200_WATCHDOG) || defined(CONFIG_AT91RM9200_WATCHDOG_MODULE)
 601 static struct platform_device at91rm9200_wdt_device = {
 602         .name           = "at91_wdt",
 603         .id             = -1,
 604         .num_resources  = 0,
 605 };
 606
 607 static void __init at91_add_device_watchdog(void)
 608 {
 609         platform_device_register(&at91rm9200_wdt_device);
 610 }
 611 #else
 612 static void __init at91_add_device_watchdog(void) {}
 613 #endif
 614
 615
 616 /* --------------------------------------------------------------------
 617  *  LEDs
 618  * -------------------------------------------------------------------- */
 619
 620 #if defined(CONFIG_LEDS)
 621 u8 at91_leds_cpu;
 622 u8 at91_leds_timer;
 623
 624 void __init at91_init_leds(u8 cpu_led, u8 timer_led)
 625 {
 626         /* Enable GPIO to access the LEDs */
 627         at91_set_gpio_output(cpu_led, 1);
 628         at91_set_gpio_output(timer_led, 1);
 629
 630         at91_leds_cpu   = cpu_led;
 631         at91_leds_timer = timer_led;
 632 }
 633 #else
 634 void __init at91_init_leds(u8 cpu_led, u8 timer_led) {}
 635 #endif
 636
 637
 638 /* --------------------------------------------------------------------
 639  *  UART
 640  * -------------------------------------------------------------------- */
 641
 642 #if defined(CONFIG_SERIAL_ATMEL)
 643 static struct resource dbgu_resources[] = {
 644         [0] = {
 645                 .start  = AT91_VA_BASE_SYS + AT91_DBGU,
 646                 .end    = AT91_VA_BASE_SYS + AT91_DBGU + SZ_512 - 1,
 647                 .flags  = IORESOURCE_MEM,
 648         },
 649         [1] = {
 650                 .start  = AT91_ID_SYS,
 651                 .end    = AT91_ID_SYS,
 652                 .flags  = IORESOURCE_IRQ,
 653         },
 654 };
 655
 656 static struct atmel_uart_data dbgu_data = {
 657         .use_dma_tx     = 0,
 658         .use_dma_rx     = 0,            /* DBGU not capable of receive DMA */
 659         .regs           = (void __iomem *)(AT91_VA_BASE_SYS + AT91_DBGU),
 660 };
 661
 662 static u64 dbgu_dmamask = DMA_BIT_MASK(32);
 663
 664 static struct platform_device at91rm9200_dbgu_device = {
 665         .name           = "atmel_usart",
 666         .id             = 0,
 667         .dev            = {
 668                                 .dma_mask               = &dbgu_dmamask,
 669                                 .coherent_dma_mask      = DMA_BIT_MASK(32),
 670                                 .platform_data          = &dbgu_data,
 671         },
 672         .resource       = dbgu_resources,
 673         .num_resources  = ARRAY_SIZE(dbgu_resources),
 674 };
 675
 676 static inline void configure_dbgu_pins(void)
 677 {
 678         at91_set_A_periph(AT91_PIN_PA30, 0);            /* DRXD */
 679         at91_set_A_periph(AT91_PIN_PA31, 1);            /* DTXD */
 680 }
 681
 682 static struct resource uart0_resources[] = {
 683         [0] = {
 684                 .start  = AT91RM9200_BASE_US0,
 685                 .end    = AT91RM9200_BASE_US0 + SZ_16K - 1,
 686                 .flags  = IORESOURCE_MEM,
 687         },
 688         [1] = {
 689                 .start  = AT91RM9200_ID_US0,
 690                 .end    = AT91RM9200_ID_US0,
 691                 .flags  = IORESOURCE_IRQ,
 692         },
 693 };
 694
 695 static struct atmel_uart_data uart0_data = {
 696         .use_dma_tx     = 1,
 697         .use_dma_rx     = 1,
 698 };
 699
 700 static u64 uart0_dmamask = DMA_BIT_MASK(32);
 701
 702 static struct platform_device at91rm9200_uart0_device = {
 703         .name           = "atmel_usart",
 704         .id             = 1,
 705         .dev            = {
 706                                 .dma_mask               = &uart0_dmamask,
 707                                 .coherent_dma_mask      = DMA_BIT_MASK(32),
 708                                 .platform_data          = &uart0_data,
 709         },
 710         .resource       = uart0_resources,
 711         .num_resources  = ARRAY_SIZE(uart0_resources),
 712 };
 713
 714 static inline void configure_usart0_pins(void)
 715 {
 716         at91_set_A_periph(AT91_PIN_PA17, 1);            /* TXD0 */
 717         at91_set_A_periph(AT91_PIN_PA18, 0);            /* RXD0 */
 718         at91_set_A_periph(AT91_PIN_PA20, 0);            /* CTS0 */
 719
 720         /*
 721          * AT91RM9200 Errata #39 - RTS0 is not internally connected to PA21.
 722          *  We need to drive the pin manually.  Default is off (RTS is active low).
 723          */
 724         at91_set_gpio_output(AT91_PIN_PA21, 1);
 725 }
 726
 727 static struct resource uart1_resources[] = {
 728         [0] = {
 729                 .start  = AT91RM9200_BASE_US1,
 730                 .end    = AT91RM9200_BASE_US1 + SZ_16K - 1,
 731                 .flags  = IORESOURCE_MEM,
 732         },
 733         [1] = {
 734                 .start  = AT91RM9200_ID_US1,
 735                 .end    = AT91RM9200_ID_US1,
 736                 .flags  = IORESOURCE_IRQ,
 737         },
 738 };
 739
 740 static struct atmel_uart_data uart1_data = {
 741         .use_dma_tx     = 1,
 742         .use_dma_rx     = 1,
 743 };
 744
 745 static u64 uart1_dmamask = DMA_BIT_MASK(32);
 746
 747 static struct platform_device at91rm9200_uart1_device = {
 748         .name           = "atmel_usart",
 749         .id             = 2,
 750         .dev            = {
 751                                 .dma_mask               = &uart1_dmamask,
 752                                 .coherent_dma_mask      = DMA_BIT_MASK(32),
 753                                 .platform_data          = &uart1_data,
 754         },
 755         .resource       = uart1_resources,
 756         .num_resources  = ARRAY_SIZE(uart1_resources),
 757 };
 758
 759 static inline void configure_usart1_pins(void)
 760 {
 761         at91_set_A_periph(AT91_PIN_PB18, 0);            /* RI1 */
 762         at91_set_A_periph(AT91_PIN_PB19, 0);            /* DTR1 */
 763         at91_set_A_periph(AT91_PIN_PB20, 1);            /* TXD1 */
 764         at91_set_A_periph(AT91_PIN_PB21, 0);            /* RXD1 */
 765         at91_set_A_periph(AT91_PIN_PB23, 0);            /* DCD1 */
 766         at91_set_A_periph(AT91_PIN_PB24, 0);            /* CTS1 */
 767         at91_set_A_periph(AT91_PIN_PB25, 0);            /* DSR1 */
 768         at91_set_A_periph(AT91_PIN_PB26, 0);            /* RTS1 */
 769 }
 770
 771 static struct resource uart2_resources[] = {
 772         [0] = {
 773                 .start  = AT91RM9200_BASE_US2,
 774                 .end    = AT91RM9200_BASE_US2 + SZ_16K - 1,
 775                 .flags  = IORESOURCE_MEM,
 776         },
 777         [1] = {
 778                 .start  = AT91RM9200_ID_US2,
 779                 .end    = AT91RM9200_ID_US2,
 780                 .flags  = IORESOURCE_IRQ,
 781         },
 782 };
 783
 784 static struct atmel_uart_data uart2_data = {
 785         .use_dma_tx     = 1,
 786         .use_dma_rx     = 1,
 787 };
 788
 789 static u64 uart2_dmamask = DMA_BIT_MASK(32);
 790
 791 static struct platform_device at91rm9200_uart2_device = {
 792         .name           = "atmel_usart",
 793         .id             = 3,
 794         .dev            = {
 795                                 .dma_mask               = &uart2_dmamask,
 796                                 .coherent_dma_mask      = DMA_BIT_MASK(32),
 797                                 .platform_data          = &uart2_data,
 798         },
 799         .resource       = uart2_resources,
 800         .num_resources  = ARRAY_SIZE(uart2_resources),
 801 };
 802
 803 static inline void configure_usart2_pins(void)
 804 {
 805         at91_set_A_periph(AT91_PIN_PA22, 0);            /* RXD2 */
 806         at91_set_A_periph(AT91_PIN_PA23, 1);            /* TXD2 */
 807 }
 808
 809 static struct resource uart3_resources[] = {
 810         [0] = {
 811                 .start  = AT91RM9200_BASE_US3,
 812                 .end    = AT91RM9200_BASE_US3 + SZ_16K - 1,
 813                 .flags  = IORESOURCE_MEM,
 814         },
 815         [1] = {
 816                 .start  = AT91RM9200_ID_US3,
 817                 .end    = AT91RM9200_ID_US3,
 818                 .flags  = IORESOURCE_IRQ,
 819         },
 820 };
 821
 822 static struct atmel_uart_data uart3_data = {
 823         .use_dma_tx     = 1,
 824         .use_dma_rx     = 1,
 825 };
 826
 827 static u64 uart3_dmamask = DMA_BIT_MASK(32);
 828
 829 static struct platform_device at91rm9200_uart3_device = {
 830         .name           = "atmel_usart",
 831         .id             = 4,
 832         .dev            = {
 833                                 .dma_mask               = &uart3_dmamask,
 834                                 .coherent_dma_mask      = DMA_BIT_MASK(32),
 835                                 .platform_data          = &uart3_data,
 836         },
 837         .resource       = uart3_resources,
 838         .num_resources  = ARRAY_SIZE(uart3_resources),
 839 };
 840
 841 static inline void configure_usart3_pins(void)
 842 {
 843         at91_set_B_periph(AT91_PIN_PA5, 1);             /* TXD3 */
 844         at91_set_B_periph(AT91_PIN_PA6, 0);             /* RXD3 */
 845 }
 846
 847 static struct platform_device *at91_uarts[ATMEL_MAX_UART];      /* the UARTs to use */
 848 struct platform_device *atmel_default_console_device;   /* the serial console device */
 849
 850 void __init at91_init_serial(struct at91_uart_config *config)
 851 {
 852         int i;
 853
 854         /* Fill in list of supported UARTs */
 855         for (i = 0; i < config->nr_tty; i++) {
 856                 switch (config->tty_map[i]) {
 857                         case 0:
 858                                 configure_usart0_pins();
 859                                 at91_uarts[i] = &at91rm9200_uart0_device;
 860                                 at91_clock_associate("usart0_clk", &at91rm9200_uart0_device.dev, "usart");
 861                                 break;
 862                         case 1:
 863                                 configure_usart1_pins();
 864                                 at91_uarts[i] = &at91rm9200_uart1_device;
 865                                 at91_clock_associate("usart1_clk", &at91rm9200_uart1_device.dev, "usart");
 866                                 break;
 867                         case 2:
 868                                 configure_usart2_pins();
 869                                 at91_uarts[i] = &at91rm9200_uart2_device;
 870                                 at91_clock_associate("usart2_clk", &at91rm9200_uart2_device.dev, "usart");
 871                                 break;
 872                         case 3:
 873                                 configure_usart3_pins();
 874                                 at91_uarts[i] = &at91rm9200_uart3_device;
 875                                 at91_clock_associate("usart3_clk", &at91rm9200_uart3_device.dev, "usart");
 876                                 break;
 877                         case 4:
 878                                 configure_dbgu_pins();
 879                                 at91_uarts[i] = &at91rm9200_dbgu_device;
 880                                 at91_clock_associate("mck", &at91rm9200_dbgu_device.dev, "usart");
 881                                 break;
 882                         default:
 883                                 continue;
 884                 }
 885                 at91_uarts[i]->id = i;          /* update ID number to mapped ID */
 886         }
 887
 888         /* Set serial console device */
 889         if (config->console_tty < ATMEL_MAX_UART)
 890                 atmel_default_console_device = at91_uarts[config->console_tty];
 891         if (!atmel_default_console_device)
 892                 printk(KERN_INFO "AT91: No default serial console defined.\n");
 893 }
 894
 895 void __init at91_add_device_serial(void)
 896 {
 897         int i;
 898
 899         for (i = 0; i < ATMEL_MAX_UART; i++) {
 900                 if (at91_uarts[i])
 901                         platform_device_register(at91_uarts[i]);
 902         }
 903 }
 904 #else
 905 void __init at91_init_serial(struct at91_uart_config *config) {}
 906 void __init at91_add_device_serial(void) {}
 907 #endif
 908
 909
 910 /* -------------------------------------------------------------------- */
 911
 912 /*
 913  * These devices are always present and don't need any board-specific
 914  * setup.
 915  */
 916 static int __init at91_add_standard_devices(void)
 917 {
 918         at91_add_device_rtc();
 919         at91_add_device_watchdog();
 920         return 0;
 921 }
 922
 923 arch_initcall(at91_add_standard_devices);