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 #include <linux/i2c-gpio.h>
  18
  19 #include <asm/arch/board.h>
  20 #include <asm/arch/gpio.h>
  21 #include <asm/arch/at91rm9200.h>
  22 #include <asm/arch/at91rm9200_mc.h>
  23
  24 #include "generic.h"
  25
  26
  27 /* --------------------------------------------------------------------
  28  *  USB Host
  29  * -------------------------------------------------------------------- */
  30
  31 #if defined(CONFIG_USB_OHCI_HCD) || defined(CONFIG_USB_OHCI_HCD_MODULE)
  32 static u64 ohci_dmamask = 0xffffffffUL;
  33 static struct at91_usbh_data usbh_data;
  34
  35 static struct resource usbh_resources[] = {
  36         [0] = {
  37                 .start  = AT91RM9200_UHP_BASE,
  38                 .end    = AT91RM9200_UHP_BASE + SZ_1M - 1,
  39                 .flags  = IORESOURCE_MEM,
  40         },
  41         [1] = {
  42                 .start  = AT91RM9200_ID_UHP,
  43                 .end    = AT91RM9200_ID_UHP,
  44                 .flags  = IORESOURCE_IRQ,
  45         },
  46 };
  47
  48 static struct platform_device at91rm9200_usbh_device = {
  49         .name           = "at91_ohci",
  50         .id             = -1,
  51         .dev            = {
  52                                 .dma_mask               = &ohci_dmamask,
  53                                 .coherent_dma_mask      = 0xffffffff,
  54                                 .platform_data          = &usbh_data,
  55         },
  56         .resource       = usbh_resources,
  57         .num_resources  = ARRAY_SIZE(usbh_resources),
  58 };
  59
  60 void __init at91_add_device_usbh(struct at91_usbh_data *data)
  61 {
  62         if (!data)
  63                 return;
  64
  65         usbh_data = *data;
  66         platform_device_register(&at91rm9200_usbh_device);
  67 }
  68 #else
  69 void __init at91_add_device_usbh(struct at91_usbh_data *data) {}
  70 #endif
  71
  72
  73 /* --------------------------------------------------------------------
  74  *  USB Device (Gadget)
  75  * -------------------------------------------------------------------- */
  76
  77 #ifdef CONFIG_USB_GADGET_AT91
  78 static struct at91_udc_data udc_data;
  79
  80 static struct resource udc_resources[] = {
  81         [0] = {
  82                 .start  = AT91RM9200_BASE_UDP,
  83                 .end    = AT91RM9200_BASE_UDP + SZ_16K - 1,
  84                 .flags  = IORESOURCE_MEM,
  85         },
  86         [1] = {
  87                 .start  = AT91RM9200_ID_UDP,
  88                 .end    = AT91RM9200_ID_UDP,
  89                 .flags  = IORESOURCE_IRQ,
  90         },
  91 };
  92
  93 static struct platform_device at91rm9200_udc_device = {
  94         .name           = "at91_udc",
  95         .id             = -1,
  96         .dev            = {
  97                                 .platform_data          = &udc_data,
  98         },
  99         .resource       = udc_resources,
 100         .num_resources  = ARRAY_SIZE(udc_resources),
 101 };
 102
 103 void __init at91_add_device_udc(struct at91_udc_data *data)
 104 {
 105         if (!data)
 106                 return;
 107
 108         if (data->vbus_pin) {
 109                 at91_set_gpio_input(data->vbus_pin, 0);
 110                 at91_set_deglitch(data->vbus_pin, 1);
 111         }
 112         if (data->pullup_pin)
 113                 at91_set_gpio_output(data->pullup_pin, 0);
 114
 115         udc_data = *data;
 116         platform_device_register(&at91rm9200_udc_device);
 117 }
 118 #else
 119 void __init at91_add_device_udc(struct at91_udc_data *data) {}
 120 #endif
 121
 122
 123 /* --------------------------------------------------------------------
 124  *  Ethernet
 125  * -------------------------------------------------------------------- */
 126
 127 #if defined(CONFIG_ARM_AT91_ETHER) || defined(CONFIG_ARM_AT91_ETHER_MODULE)
 128 static u64 eth_dmamask = 0xffffffffUL;
 129 static struct at91_eth_data eth_data;
 130
 131 static struct resource eth_resources[] = {
 132         [0] = {
 133                 .start  = AT91_VA_BASE_EMAC,
 134                 .end    = AT91_VA_BASE_EMAC + SZ_16K - 1,
 135                 .flags  = IORESOURCE_MEM,
 136         },
 137         [1] = {
 138                 .start  = AT91RM9200_ID_EMAC,
 139                 .end    = AT91RM9200_ID_EMAC,
 140                 .flags  = IORESOURCE_IRQ,
 141         },
 142 };
 143
 144 static struct platform_device at91rm9200_eth_device = {
 145         .name           = "at91_ether",
 146         .id             = -1,
 147         .dev            = {
 148                                 .dma_mask               = &eth_dmamask,
 149                                 .coherent_dma_mask      = 0xffffffff,
 150                                 .platform_data          = &eth_data,
 151         },
 152         .resource       = eth_resources,
 153         .num_resources  = ARRAY_SIZE(eth_resources),
 154 };
 155
 156 void __init at91_add_device_eth(struct at91_eth_data *data)
 157 {
 158         if (!data)
 159                 return;
 160
 161         if (data->phy_irq_pin) {
 162                 at91_set_gpio_input(data->phy_irq_pin, 0);
 163                 at91_set_deglitch(data->phy_irq_pin, 1);
 164         }
 165
 166         /* Pins used for MII and RMII */
 167         at91_set_A_periph(AT91_PIN_PA16, 0);    /* EMDIO */
 168         at91_set_A_periph(AT91_PIN_PA15, 0);    /* EMDC */
 169         at91_set_A_periph(AT91_PIN_PA14, 0);    /* ERXER */
 170         at91_set_A_periph(AT91_PIN_PA13, 0);    /* ERX1 */
 171         at91_set_A_periph(AT91_PIN_PA12, 0);    /* ERX0 */
 172         at91_set_A_periph(AT91_PIN_PA11, 0);    /* ECRS_ECRSDV */
 173         at91_set_A_periph(AT91_PIN_PA10, 0);    /* ETX1 */
 174         at91_set_A_periph(AT91_PIN_PA9, 0);     /* ETX0 */
 175         at91_set_A_periph(AT91_PIN_PA8, 0);     /* ETXEN */
 176         at91_set_A_periph(AT91_PIN_PA7, 0);     /* ETXCK_EREFCK */
 177
 178         if (!data->is_rmii) {
 179                 at91_set_B_periph(AT91_PIN_PB19, 0);    /* ERXCK */
 180                 at91_set_B_periph(AT91_PIN_PB18, 0);    /* ECOL */
 181                 at91_set_B_periph(AT91_PIN_PB17, 0);    /* ERXDV */
 182                 at91_set_B_periph(AT91_PIN_PB16, 0);    /* ERX3 */
 183                 at91_set_B_periph(AT91_PIN_PB15, 0);    /* ERX2 */
 184                 at91_set_B_periph(AT91_PIN_PB14, 0);    /* ETXER */
 185                 at91_set_B_periph(AT91_PIN_PB13, 0);    /* ETX3 */
 186                 at91_set_B_periph(AT91_PIN_PB12, 0);    /* ETX2 */
 187         }
 188
 189         eth_data = *data;
 190         platform_device_register(&at91rm9200_eth_device);
 191 }
 192 #else
 193 void __init at91_add_device_eth(struct at91_eth_data *data) {}
 194 #endif
 195
 196
 197 /* --------------------------------------------------------------------
 198  *  Compact Flash / PCMCIA
 199  * -------------------------------------------------------------------- */
 200
 201 #if defined(CONFIG_AT91_CF) || defined(CONFIG_AT91_CF_MODULE)
 202 static struct at91_cf_data cf_data;
 203
 204 #define CF_BASE         AT91_CHIPSELECT_4
 205
 206 static struct resource cf_resources[] = {
 207         [0] = {
 208                 .start  = CF_BASE,
 209                 /* ties up CS4, CS5 and CS6 */
 210                 .end    = CF_BASE + (0x30000000 - 1),
 211                 .flags  = IORESOURCE_MEM | IORESOURCE_MEM_8AND16BIT,
 212         },
 213 };
 214
 215 static struct platform_device at91rm9200_cf_device = {
 216         .name           = "at91_cf",
 217         .id             = -1,
 218         .dev            = {
 219                                 .platform_data          = &cf_data,
 220         },
 221         .resource       = cf_resources,
 222         .num_resources  = ARRAY_SIZE(cf_resources),
 223 };
 224
 225 void __init at91_add_device_cf(struct at91_cf_data *data)
 226 {
 227         unsigned int csa;
 228
 229         if (!data)
 230                 return;
 231
 232         data->chipselect = 4;           /* can only use EBI ChipSelect 4 */
 233
 234         /* CF takes over CS4, CS5, CS6 */
 235         csa = at91_sys_read(AT91_EBI_CSA);
 236         at91_sys_write(AT91_EBI_CSA, csa | AT91_EBI_CS4A_SMC_COMPACTFLASH);
 237
 238         /*
 239          * Static memory controller timing adjustments.
 240          * REVISIT:  these timings are in terms of MCK cycles, so
 241          * when MCK changes (cpufreq etc) so must these values...
 242          */
 243         at91_sys_write(AT91_SMC_CSR(4),
 244                                   AT91_SMC_ACSS_STD
 245                                 | AT91_SMC_DBW_16
 246                                 | AT91_SMC_BAT
 247                                 | AT91_SMC_WSEN
 248                                 | AT91_SMC_NWS_(32)     /* wait states */
 249                                 | AT91_SMC_RWSETUP_(6)  /* setup time */
 250                                 | AT91_SMC_RWHOLD_(4)   /* hold time */
 251         );
 252
 253         /* input/irq */
 254         if (data->irq_pin) {
 255                 at91_set_gpio_input(data->irq_pin, 1);
 256                 at91_set_deglitch(data->irq_pin, 1);
 257         }
 258         at91_set_gpio_input(data->det_pin, 1);
 259         at91_set_deglitch(data->det_pin, 1);
 260
 261         /* outputs, initially off */
 262         if (data->vcc_pin)
 263                 at91_set_gpio_output(data->vcc_pin, 0);
 264         at91_set_gpio_output(data->rst_pin, 0);
 265
 266         /* force poweron defaults for these pins ... */
 267         at91_set_A_periph(AT91_PIN_PC9, 0);     /* A25/CFRNW */
 268         at91_set_A_periph(AT91_PIN_PC10, 0);    /* NCS4/CFCS */
 269         at91_set_A_periph(AT91_PIN_PC11, 0);    /* NCS5/CFCE1 */
 270         at91_set_A_periph(AT91_PIN_PC12, 0);    /* NCS6/CFCE2 */
 271
 272         /* nWAIT is _not_ a default setting */
 273         at91_set_A_periph(AT91_PIN_PC6, 1);     /* nWAIT */
 274
 275         cf_data = *data;
 276         platform_device_register(&at91rm9200_cf_device);
 277 }
 278 #else
 279 void __init at91_add_device_cf(struct at91_cf_data *data) {}
 280 #endif
 281
 282
 283 /* --------------------------------------------------------------------
 284  *  MMC / SD
 285  * -------------------------------------------------------------------- */
 286
 287 #if defined(CONFIG_MMC_AT91) || defined(CONFIG_MMC_AT91_MODULE)
 288 static u64 mmc_dmamask = 0xffffffffUL;
 289 static struct at91_mmc_data mmc_data;
 290
 291 static struct resource mmc_resources[] = {
 292         [0] = {
 293                 .start  = AT91RM9200_BASE_MCI,
 294                 .end    = AT91RM9200_BASE_MCI + SZ_16K - 1,
 295                 .flags  = IORESOURCE_MEM,
 296         },
 297         [1] = {
 298                 .start  = AT91RM9200_ID_MCI,
 299                 .end    = AT91RM9200_ID_MCI,
 300                 .flags  = IORESOURCE_IRQ,
 301         },
 302 };
 303
 304 static struct platform_device at91rm9200_mmc_device = {
 305         .name           = "at91_mci",
 306         .id             = -1,
 307         .dev            = {
 308                                 .dma_mask               = &mmc_dmamask,
 309                                 .coherent_dma_mask      = 0xffffffff,
 310                                 .platform_data          = &mmc_data,
 311         },
 312         .resource       = mmc_resources,
 313         .num_resources  = ARRAY_SIZE(mmc_resources),
 314 };
 315
 316 void __init at91_add_device_mmc(short mmc_id, struct at91_mmc_data *data)
 317 {
 318         if (!data)
 319                 return;
 320
 321         /* input/irq */
 322         if (data->det_pin) {
 323                 at91_set_gpio_input(data->det_pin, 1);
 324                 at91_set_deglitch(data->det_pin, 1);
 325         }
 326         if (data->wp_pin)
 327                 at91_set_gpio_input(data->wp_pin, 1);
 328         if (data->vcc_pin)
 329                 at91_set_gpio_output(data->vcc_pin, 0);
 330
 331         /* CLK */
 332         at91_set_A_periph(AT91_PIN_PA27, 0);
 333
 334         if (data->slot_b) {
 335                 /* CMD */
 336                 at91_set_B_periph(AT91_PIN_PA8, 1);
 337
 338                 /* DAT0, maybe DAT1..DAT3 */
 339                 at91_set_B_periph(AT91_PIN_PA9, 1);
 340                 if (data->wire4) {
 341                         at91_set_B_periph(AT91_PIN_PA10, 1);
 342                         at91_set_B_periph(AT91_PIN_PA11, 1);
 343                         at91_set_B_periph(AT91_PIN_PA12, 1);
 344                 }
 345         } else {
 346                 /* CMD */
 347                 at91_set_A_periph(AT91_PIN_PA28, 1);
 348
 349                 /* DAT0, maybe DAT1..DAT3 */
 350                 at91_set_A_periph(AT91_PIN_PA29, 1);
 351                 if (data->wire4) {
 352                         at91_set_B_periph(AT91_PIN_PB3, 1);
 353                         at91_set_B_periph(AT91_PIN_PB4, 1);
 354                         at91_set_B_periph(AT91_PIN_PB5, 1);
 355                 }
 356         }
 357
 358         mmc_data = *data;
 359         platform_device_register(&at91rm9200_mmc_device);
 360 }
 361 #else
 362 void __init at91_add_device_mmc(short mmc_id, struct at91_mmc_data *data) {}
 363 #endif
 364
 365
 366 /* --------------------------------------------------------------------
 367  *  NAND / SmartMedia
 368  * -------------------------------------------------------------------- */
 369
 370 #if defined(CONFIG_MTD_NAND_AT91) || defined(CONFIG_MTD_NAND_AT91_MODULE)
 371 static struct at91_nand_data nand_data;
 372
 373 #define NAND_BASE       AT91_CHIPSELECT_3
 374
 375 static struct resource nand_resources[] = {
 376         {
 377                 .start  = NAND_BASE,
 378                 .end    = NAND_BASE + SZ_8M - 1,
 379                 .flags  = IORESOURCE_MEM,
 380         }
 381 };
 382
 383 static struct platform_device at91rm9200_nand_device = {
 384         .name           = "at91_nand",
 385         .id             = -1,
 386         .dev            = {
 387                                 .platform_data  = &nand_data,
 388         },
 389         .resource       = nand_resources,
 390         .num_resources  = ARRAY_SIZE(nand_resources),
 391 };
 392
 393 void __init at91_add_device_nand(struct at91_nand_data *data)
 394 {
 395         unsigned int csa;
 396
 397         if (!data)
 398                 return;
 399
 400         /* enable the address range of CS3 */
 401         csa = at91_sys_read(AT91_EBI_CSA);
 402         at91_sys_write(AT91_EBI_CSA, csa | AT91_EBI_CS3A_SMC_SMARTMEDIA);
 403
 404         /* set the bus interface characteristics */
 405         at91_sys_write(AT91_SMC_CSR(3), AT91_SMC_ACSS_STD | AT91_SMC_DBW_8 | AT91_SMC_WSEN
 406                 | AT91_SMC_NWS_(5)
 407                 | AT91_SMC_TDF_(1)
 408                 | AT91_SMC_RWSETUP_(0)  /* tDS Data Set up Time 30 - ns */
 409                 | AT91_SMC_RWHOLD_(1)   /* tDH Data Hold Time 20 - ns */
 410         );
 411
 412         /* enable pin */
 413         if (data->enable_pin)
 414                 at91_set_gpio_output(data->enable_pin, 1);
 415
 416         /* ready/busy pin */
 417         if (data->rdy_pin)
 418                 at91_set_gpio_input(data->rdy_pin, 1);
 419
 420         /* card detect pin */
 421         if (data->det_pin)
 422                 at91_set_gpio_input(data->det_pin, 1);
 423
 424         at91_set_A_periph(AT91_PIN_PC1, 0);             /* SMOE */
 425         at91_set_A_periph(AT91_PIN_PC3, 0);             /* SMWE */
 426
 427         nand_data = *data;
 428         platform_device_register(&at91rm9200_nand_device);
 429 }
 430 #else
 431 void __init at91_add_device_nand(struct at91_nand_data *data) {}
 432 #endif
 433
 434
 435 /* --------------------------------------------------------------------
 436  *  TWI (i2c)
 437  * -------------------------------------------------------------------- */
 438
 439 /*
 440  * Prefer the GPIO code since the TWI controller isn't robust
 441  * (gets overruns and underruns under load) and can only issue
 442  * repeated STARTs in one scenario (the driver doesn't yet handle them).
 443  */
 444 #if defined(CONFIG_I2C_GPIO) || defined(CONFIG_I2C_GPIO_MODULE)
 445
 446 static struct i2c_gpio_platform_data pdata = {
 447         .sda_pin                = AT91_PIN_PA25,
 448         .sda_is_open_drain      = 1,
 449         .scl_pin                = AT91_PIN_PA26,
 450         .scl_is_open_drain      = 1,
 451         .udelay                 = 2,            /* ~100 kHz */
 452 };
 453
 454 static struct platform_device at91rm9200_twi_device = {
 455         .name                   = "i2c-gpio",
 456         .id                     = -1,
 457         .dev.platform_data      = &pdata,
 458 };
 459
 460 void __init at91_add_device_i2c(struct i2c_board_info *devices, int nr_devices)
 461 {
 462         at91_set_GPIO_periph(AT91_PIN_PA25, 1);         /* TWD (SDA) */
 463         at91_set_multi_drive(AT91_PIN_PA25, 1);
 464
 465         at91_set_GPIO_periph(AT91_PIN_PA26, 1);         /* TWCK (SCL) */
 466         at91_set_multi_drive(AT91_PIN_PA26, 1);
 467
 468         i2c_register_board_info(0, devices, nr_devices);
 469         platform_device_register(&at91rm9200_twi_device);
 470 }
 471
 472 #elif defined(CONFIG_I2C_AT91) || defined(CONFIG_I2C_AT91_MODULE)
 473
 474 static struct resource twi_resources[] = {
 475         [0] = {
 476                 .start  = AT91RM9200_BASE_TWI,
 477                 .end    = AT91RM9200_BASE_TWI + SZ_16K - 1,
 478                 .flags  = IORESOURCE_MEM,
 479         },
 480         [1] = {
 481                 .start  = AT91RM9200_ID_TWI,
 482                 .end    = AT91RM9200_ID_TWI,
 483                 .flags  = IORESOURCE_IRQ,
 484         },
 485 };
 486
 487 static struct platform_device at91rm9200_twi_device = {
 488         .name           = "at91_i2c",
 489         .id             = -1,
 490         .resource       = twi_resources,
 491         .num_resources  = ARRAY_SIZE(twi_resources),
 492 };
 493
 494 void __init at91_add_device_i2c(struct i2c_board_info *devices, int nr_devices)
 495 {
 496         /* pins used for TWI interface */
 497         at91_set_A_periph(AT91_PIN_PA25, 0);            /* TWD */
 498         at91_set_multi_drive(AT91_PIN_PA25, 1);
 499
 500         at91_set_A_periph(AT91_PIN_PA26, 0);            /* TWCK */
 501         at91_set_multi_drive(AT91_PIN_PA26, 1);
 502
 503         i2c_register_board_info(0, devices, nr_devices);
 504         platform_device_register(&at91rm9200_twi_device);
 505 }
 506 #else
 507 void __init at91_add_device_i2c(struct i2c_board_info *devices, int nr_devices) {}
 508 #endif
 509
 510
 511 /* --------------------------------------------------------------------
 512  *  SPI
 513  * -------------------------------------------------------------------- */
 514
 515 #if defined(CONFIG_SPI_ATMEL) || defined(CONFIG_SPI_ATMEL_MODULE)
 516 static u64 spi_dmamask = 0xffffffffUL;
 517
 518 static struct resource spi_resources[] = {
 519         [0] = {
 520                 .start  = AT91RM9200_BASE_SPI,
 521                 .end    = AT91RM9200_BASE_SPI + SZ_16K - 1,
 522                 .flags  = IORESOURCE_MEM,
 523         },
 524         [1] = {
 525                 .start  = AT91RM9200_ID_SPI,
 526                 .end    = AT91RM9200_ID_SPI,
 527                 .flags  = IORESOURCE_IRQ,
 528         },
 529 };
 530
 531 static struct platform_device at91rm9200_spi_device = {
 532         .name           = "atmel_spi",
 533         .id             = 0,
 534         .dev            = {
 535                                 .dma_mask               = &spi_dmamask,
 536                                 .coherent_dma_mask      = 0xffffffff,
 537         },
 538         .resource       = spi_resources,
 539         .num_resources  = ARRAY_SIZE(spi_resources),
 540 };
 541
 542 static const unsigned spi_standard_cs[4] = { AT91_PIN_PA3, AT91_PIN_PA4, AT91_PIN_PA5, AT91_PIN_PA6 };
 543
 544 void __init at91_add_device_spi(struct spi_board_info *devices, int nr_devices)
 545 {
 546         int i;
 547         unsigned long cs_pin;
 548
 549         at91_set_A_periph(AT91_PIN_PA0, 0);     /* MISO */
 550         at91_set_A_periph(AT91_PIN_PA1, 0);     /* MOSI */
 551         at91_set_A_periph(AT91_PIN_PA2, 0);     /* SPCK */
 552
 553         /* Enable SPI chip-selects */
 554         for (i = 0; i < nr_devices; i++) {
 555                 if (devices[i].controller_data)
 556                         cs_pin = (unsigned long) devices[i].controller_data;
 557                 else
 558                         cs_pin = spi_standard_cs[devices[i].chip_select];
 559
 560                 /* enable chip-select pin */
 561                 at91_set_gpio_output(cs_pin, 1);
 562
 563                 /* pass chip-select pin to driver */
 564                 devices[i].controller_data = (void *) cs_pin;
 565         }
 566
 567         spi_register_board_info(devices, nr_devices);
 568         platform_device_register(&at91rm9200_spi_device);
 569 }
 570 #else
 571 void __init at91_add_device_spi(struct spi_board_info *devices, int nr_devices) {}
 572 #endif
 573
 574
 575 /* --------------------------------------------------------------------
 576  *  RTC
 577  * -------------------------------------------------------------------- */
 578
 579 #if defined(CONFIG_RTC_DRV_AT91RM9200) || defined(CONFIG_RTC_DRV_AT91RM9200_MODULE)
 580 static struct platform_device at91rm9200_rtc_device = {
 581         .name           = "at91_rtc",
 582         .id             = -1,
 583         .num_resources  = 0,
 584 };
 585
 586 static void __init at91_add_device_rtc(void)
 587 {
 588         platform_device_register(&at91rm9200_rtc_device);
 589 }
 590 #else
 591 static void __init at91_add_device_rtc(void) {}
 592 #endif
 593
 594
 595 /* --------------------------------------------------------------------
 596  *  Watchdog
 597  * -------------------------------------------------------------------- */
 598
 599 #if defined(CONFIG_AT91RM9200_WATCHDOG) || defined(CONFIG_AT91RM9200_WATCHDOG_MODULE)
 600 static struct platform_device at91rm9200_wdt_device = {
 601         .name           = "at91_wdt",
 602         .id             = -1,
 603         .num_resources  = 0,
 604 };
 605
 606 static void __init at91_add_device_watchdog(void)
 607 {
 608         platform_device_register(&at91rm9200_wdt_device);
 609 }
 610 #else
 611 static void __init at91_add_device_watchdog(void) {}
 612 #endif
 613
 614
 615 /* --------------------------------------------------------------------
 616  *  LEDs
 617  * -------------------------------------------------------------------- */
 618
 619 #if defined(CONFIG_LEDS)
 620 u8 at91_leds_cpu;
 621 u8 at91_leds_timer;
 622
 623 void __init at91_init_leds(u8 cpu_led, u8 timer_led)
 624 {
 625         /* Enable GPIO to access the LEDs */
 626         at91_set_gpio_output(cpu_led, 1);
 627         at91_set_gpio_output(timer_led, 1);
 628
 629         at91_leds_cpu   = cpu_led;
 630         at91_leds_timer = timer_led;
 631 }
 632 #else
 633 void __init at91_init_leds(u8 cpu_led, u8 timer_led) {}
 634 #endif
 635
 636
 637 /* --------------------------------------------------------------------
 638  *  UART
 639  * -------------------------------------------------------------------- */
 640
 641 #if defined(CONFIG_SERIAL_ATMEL)
 642 static struct resource dbgu_resources[] = {
 643         [0] = {
 644                 .start  = AT91_VA_BASE_SYS + AT91_DBGU,
 645                 .end    = AT91_VA_BASE_SYS + AT91_DBGU + SZ_512 - 1,
 646                 .flags  = IORESOURCE_MEM,
 647         },
 648         [1] = {
 649                 .start  = AT91_ID_SYS,
 650                 .end    = AT91_ID_SYS,
 651                 .flags  = IORESOURCE_IRQ,
 652         },
 653 };
 654
 655 static struct atmel_uart_data dbgu_data = {
 656         .use_dma_tx     = 0,
 657         .use_dma_rx     = 0,            /* DBGU not capable of receive DMA */
 658         .regs           = (void __iomem *)(AT91_VA_BASE_SYS + AT91_DBGU),
 659 };
 660
 661 static struct platform_device at91rm9200_dbgu_device = {
 662         .name           = "atmel_usart",
 663         .id             = 0,
 664         .dev            = {
 665                                 .platform_data  = &dbgu_data,
 666                                 .coherent_dma_mask = 0xffffffff,
 667         },
 668         .resource       = dbgu_resources,
 669         .num_resources  = ARRAY_SIZE(dbgu_resources),
 670 };
 671
 672 static inline void configure_dbgu_pins(void)
 673 {
 674         at91_set_A_periph(AT91_PIN_PA30, 0);            /* DRXD */
 675         at91_set_A_periph(AT91_PIN_PA31, 1);            /* DTXD */
 676 }
 677
 678 static struct resource uart0_resources[] = {
 679         [0] = {
 680                 .start  = AT91RM9200_BASE_US0,
 681                 .end    = AT91RM9200_BASE_US0 + SZ_16K - 1,
 682                 .flags  = IORESOURCE_MEM,
 683         },
 684         [1] = {
 685                 .start  = AT91RM9200_ID_US0,
 686                 .end    = AT91RM9200_ID_US0,
 687                 .flags  = IORESOURCE_IRQ,
 688         },
 689 };
 690
 691 static struct atmel_uart_data uart0_data = {
 692         .use_dma_tx     = 1,
 693         .use_dma_rx     = 1,
 694 };
 695
 696 static struct platform_device at91rm9200_uart0_device = {
 697         .name           = "atmel_usart",
 698         .id             = 1,
 699         .dev            = {
 700                                 .platform_data  = &uart0_data,
 701                                 .coherent_dma_mask = 0xffffffff,
 702         },
 703         .resource       = uart0_resources,
 704         .num_resources  = ARRAY_SIZE(uart0_resources),
 705 };
 706
 707 static inline void configure_usart0_pins(void)
 708 {
 709         at91_set_A_periph(AT91_PIN_PA17, 1);            /* TXD0 */
 710         at91_set_A_periph(AT91_PIN_PA18, 0);            /* RXD0 */
 711         at91_set_A_periph(AT91_PIN_PA20, 0);            /* CTS0 */
 712
 713         /*
 714          * AT91RM9200 Errata #39 - RTS0 is not internally connected to PA21.
 715          *  We need to drive the pin manually.  Default is off (RTS is active low).
 716          */
 717         at91_set_gpio_output(AT91_PIN_PA21, 1);
 718 }
 719
 720 static struct resource uart1_resources[] = {
 721         [0] = {
 722                 .start  = AT91RM9200_BASE_US1,
 723                 .end    = AT91RM9200_BASE_US1 + SZ_16K - 1,
 724                 .flags  = IORESOURCE_MEM,
 725         },
 726         [1] = {
 727                 .start  = AT91RM9200_ID_US1,
 728                 .end    = AT91RM9200_ID_US1,
 729                 .flags  = IORESOURCE_IRQ,
 730         },
 731 };
 732
 733 static struct atmel_uart_data uart1_data = {
 734         .use_dma_tx     = 1,
 735         .use_dma_rx     = 1,
 736 };
 737
 738 static struct platform_device at91rm9200_uart1_device = {
 739         .name           = "atmel_usart",
 740         .id             = 2,
 741         .dev            = {
 742                                 .platform_data  = &uart1_data,
 743                                 .coherent_dma_mask = 0xffffffff,
 744         },
 745         .resource       = uart1_resources,
 746         .num_resources  = ARRAY_SIZE(uart1_resources),
 747 };
 748
 749 static inline void configure_usart1_pins(void)
 750 {
 751         at91_set_A_periph(AT91_PIN_PB18, 0);            /* RI1 */
 752         at91_set_A_periph(AT91_PIN_PB19, 0);            /* DTR1 */
 753         at91_set_A_periph(AT91_PIN_PB20, 1);            /* TXD1 */
 754         at91_set_A_periph(AT91_PIN_PB21, 0);            /* RXD1 */
 755         at91_set_A_periph(AT91_PIN_PB23, 0);            /* DCD1 */
 756         at91_set_A_periph(AT91_PIN_PB24, 0);            /* CTS1 */
 757         at91_set_A_periph(AT91_PIN_PB25, 0);            /* DSR1 */
 758         at91_set_A_periph(AT91_PIN_PB26, 0);            /* RTS1 */
 759 }
 760
 761 static struct resource uart2_resources[] = {
 762         [0] = {
 763                 .start  = AT91RM9200_BASE_US2,
 764                 .end    = AT91RM9200_BASE_US2 + SZ_16K - 1,
 765                 .flags  = IORESOURCE_MEM,
 766         },
 767         [1] = {
 768                 .start  = AT91RM9200_ID_US2,
 769                 .end    = AT91RM9200_ID_US2,
 770                 .flags  = IORESOURCE_IRQ,
 771         },
 772 };
 773
 774 static struct atmel_uart_data uart2_data = {
 775         .use_dma_tx     = 1,
 776         .use_dma_rx     = 1,
 777 };
 778
 779 static struct platform_device at91rm9200_uart2_device = {
 780         .name           = "atmel_usart",
 781         .id             = 3,
 782         .dev            = {
 783                                 .platform_data  = &uart2_data,
 784                                 .coherent_dma_mask = 0xffffffff,
 785         },
 786         .resource       = uart2_resources,
 787         .num_resources  = ARRAY_SIZE(uart2_resources),
 788 };
 789
 790 static inline void configure_usart2_pins(void)
 791 {
 792         at91_set_A_periph(AT91_PIN_PA22, 0);            /* RXD2 */
 793         at91_set_A_periph(AT91_PIN_PA23, 1);            /* TXD2 */
 794 }
 795
 796 static struct resource uart3_resources[] = {
 797         [0] = {
 798                 .start  = AT91RM9200_BASE_US3,
 799                 .end    = AT91RM9200_BASE_US3 + SZ_16K - 1,
 800                 .flags  = IORESOURCE_MEM,
 801         },
 802         [1] = {
 803                 .start  = AT91RM9200_ID_US3,
 804                 .end    = AT91RM9200_ID_US3,
 805                 .flags  = IORESOURCE_IRQ,
 806         },
 807 };
 808
 809 static struct atmel_uart_data uart3_data = {
 810         .use_dma_tx     = 1,
 811         .use_dma_rx     = 1,
 812 };
 813
 814 static struct platform_device at91rm9200_uart3_device = {
 815         .name           = "atmel_usart",
 816         .id             = 4,
 817         .dev            = {
 818                                 .platform_data  = &uart3_data,
 819                                 .coherent_dma_mask = 0xffffffff,
 820         },
 821         .resource       = uart3_resources,
 822         .num_resources  = ARRAY_SIZE(uart3_resources),
 823 };
 824
 825 static inline void configure_usart3_pins(void)
 826 {
 827         at91_set_B_periph(AT91_PIN_PA5, 1);             /* TXD3 */
 828         at91_set_B_periph(AT91_PIN_PA6, 0);             /* RXD3 */
 829 }
 830
 831 struct platform_device *at91_uarts[ATMEL_MAX_UART];     /* the UARTs to use */
 832 struct platform_device *atmel_default_console_device;   /* the serial console device */
 833
 834 void __init at91_init_serial(struct at91_uart_config *config)
 835 {
 836         int i;
 837
 838         /* Fill in list of supported UARTs */
 839         for (i = 0; i < config->nr_tty; i++) {
 840                 switch (config->tty_map[i]) {
 841                         case 0:
 842                                 configure_usart0_pins();
 843                                 at91_uarts[i] = &at91rm9200_uart0_device;
 844                                 at91_clock_associate("usart0_clk", &at91rm9200_uart0_device.dev, "usart");
 845                                 break;
 846                         case 1:
 847                                 configure_usart1_pins();
 848                                 at91_uarts[i] = &at91rm9200_uart1_device;
 849                                 at91_clock_associate("usart1_clk", &at91rm9200_uart1_device.dev, "usart");
 850                                 break;
 851                         case 2:
 852                                 configure_usart2_pins();
 853                                 at91_uarts[i] = &at91rm9200_uart2_device;
 854                                 at91_clock_associate("usart2_clk", &at91rm9200_uart2_device.dev, "usart");
 855                                 break;
 856                         case 3:
 857                                 configure_usart3_pins();
 858                                 at91_uarts[i] = &at91rm9200_uart3_device;
 859                                 at91_clock_associate("usart3_clk", &at91rm9200_uart3_device.dev, "usart");
 860                                 break;
 861                         case 4:
 862                                 configure_dbgu_pins();
 863                                 at91_uarts[i] = &at91rm9200_dbgu_device;
 864                                 at91_clock_associate("mck", &at91rm9200_dbgu_device.dev, "usart");
 865                                 break;
 866                         default:
 867                                 continue;
 868                 }
 869                 at91_uarts[i]->id = i;          /* update ID number to mapped ID */
 870         }
 871
 872         /* Set serial console device */
 873         if (config->console_tty < ATMEL_MAX_UART)
 874                 atmel_default_console_device = at91_uarts[config->console_tty];
 875         if (!atmel_default_console_device)
 876                 printk(KERN_INFO "AT91: No default serial console defined.\n");
 877 }
 878
 879 void __init at91_add_device_serial(void)
 880 {
 881         int i;
 882
 883         for (i = 0; i < ATMEL_MAX_UART; i++) {
 884                 if (at91_uarts[i])
 885                         platform_device_register(at91_uarts[i]);
 886         }
 887 }
 888 #else
 889 void __init at91_init_serial(struct at91_uart_config *config) {}
 890 void __init at91_add_device_serial(void) {}
 891 #endif
 892
 893
 894 /* -------------------------------------------------------------------- */
 895
 896 /*
 897  * These devices are always present and don't need any board-specific
 898  * setup.
 899  */
 900 static int __init at91_add_standard_devices(void)
 901 {
 902         at91_add_device_rtc();
 903         at91_add_device_watchdog();
 904         return 0;
 905 }
 906
 907 arch_initcall(at91_add_standard_devices);