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_256M - 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  *  SSC -- Synchronous Serial Controller
 618  * -------------------------------------------------------------------- */
 619
 620 #if defined(CONFIG_ATMEL_SSC) || defined(CONFIG_ATMEL_SSC_MODULE)
 621 static u64 ssc0_dmamask = DMA_BIT_MASK(32);
 622
 623 static struct resource ssc0_resources[] = {
 624         [0] = {
 625                 .start  = AT91RM9200_BASE_SSC0,
 626                 .end    = AT91RM9200_BASE_SSC0 + SZ_16K - 1,
 627                 .flags  = IORESOURCE_MEM,
 628         },
 629         [1] = {
 630                 .start  = AT91RM9200_ID_SSC0,
 631                 .end    = AT91RM9200_ID_SSC0,
 632                 .flags  = IORESOURCE_IRQ,
 633         },
 634 };
 635
 636 static struct platform_device at91rm9200_ssc0_device = {
 637         .name   = "ssc",
 638         .id     = 0,
 639         .dev    = {
 640                 .dma_mask               = &ssc0_dmamask,
 641                 .coherent_dma_mask      = DMA_BIT_MASK(32),
 642         },
 643         .resource       = ssc0_resources,
 644         .num_resources  = ARRAY_SIZE(ssc0_resources),
 645 };
 646
 647 static inline void configure_ssc0_pins(unsigned pins)
 648 {
 649         if (pins & ATMEL_SSC_TF)
 650                 at91_set_A_periph(AT91_PIN_PB0, 1);
 651         if (pins & ATMEL_SSC_TK)
 652                 at91_set_A_periph(AT91_PIN_PB1, 1);
 653         if (pins & ATMEL_SSC_TD)
 654                 at91_set_A_periph(AT91_PIN_PB2, 1);
 655         if (pins & ATMEL_SSC_RD)
 656                 at91_set_A_periph(AT91_PIN_PB3, 1);
 657         if (pins & ATMEL_SSC_RK)
 658                 at91_set_A_periph(AT91_PIN_PB4, 1);
 659         if (pins & ATMEL_SSC_RF)
 660                 at91_set_A_periph(AT91_PIN_PB5, 1);
 661 }
 662
 663 static u64 ssc1_dmamask = DMA_BIT_MASK(32);
 664
 665 static struct resource ssc1_resources[] = {
 666         [0] = {
 667                 .start  = AT91RM9200_BASE_SSC1,
 668                 .end    = AT91RM9200_BASE_SSC1 + SZ_16K - 1,
 669                 .flags  = IORESOURCE_MEM,
 670         },
 671         [1] = {
 672                 .start  = AT91RM9200_ID_SSC1,
 673                 .end    = AT91RM9200_ID_SSC1,
 674                 .flags  = IORESOURCE_IRQ,
 675         },
 676 };
 677
 678 static struct platform_device at91rm9200_ssc1_device = {
 679         .name   = "ssc",
 680         .id     = 1,
 681         .dev    = {
 682                 .dma_mask               = &ssc1_dmamask,
 683                 .coherent_dma_mask      = DMA_BIT_MASK(32),
 684         },
 685         .resource       = ssc1_resources,
 686         .num_resources  = ARRAY_SIZE(ssc1_resources),
 687 };
 688
 689 static inline void configure_ssc1_pins(unsigned pins)
 690 {
 691         if (pins & ATMEL_SSC_TF)
 692                 at91_set_A_periph(AT91_PIN_PB6, 1);
 693         if (pins & ATMEL_SSC_TK)
 694                 at91_set_A_periph(AT91_PIN_PB7, 1);
 695         if (pins & ATMEL_SSC_TD)
 696                 at91_set_A_periph(AT91_PIN_PB8, 1);
 697         if (pins & ATMEL_SSC_RD)
 698                 at91_set_A_periph(AT91_PIN_PB9, 1);
 699         if (pins & ATMEL_SSC_RK)
 700                 at91_set_A_periph(AT91_PIN_PB10, 1);
 701         if (pins & ATMEL_SSC_RF)
 702                 at91_set_A_periph(AT91_PIN_PB11, 1);
 703 }
 704
 705 static u64 ssc2_dmamask = DMA_BIT_MASK(32);
 706
 707 static struct resource ssc2_resources[] = {
 708         [0] = {
 709                 .start  = AT91RM9200_BASE_SSC2,
 710                 .end    = AT91RM9200_BASE_SSC2 + SZ_16K - 1,
 711                 .flags  = IORESOURCE_MEM,
 712         },
 713         [1] = {
 714                 .start  = AT91RM9200_ID_SSC2,
 715                 .end    = AT91RM9200_ID_SSC2,
 716                 .flags  = IORESOURCE_IRQ,
 717         },
 718 };
 719
 720 static struct platform_device at91rm9200_ssc2_device = {
 721         .name   = "ssc",
 722         .id     = 2,
 723         .dev    = {
 724                 .dma_mask               = &ssc2_dmamask,
 725                 .coherent_dma_mask      = DMA_BIT_MASK(32),
 726         },
 727         .resource       = ssc2_resources,
 728         .num_resources  = ARRAY_SIZE(ssc2_resources),
 729 };
 730
 731 static inline void configure_ssc2_pins(unsigned pins)
 732 {
 733         if (pins & ATMEL_SSC_TF)
 734                 at91_set_A_periph(AT91_PIN_PB12, 1);
 735         if (pins & ATMEL_SSC_TK)
 736                 at91_set_A_periph(AT91_PIN_PB13, 1);
 737         if (pins & ATMEL_SSC_TD)
 738                 at91_set_A_periph(AT91_PIN_PB14, 1);
 739         if (pins & ATMEL_SSC_RD)
 740                 at91_set_A_periph(AT91_PIN_PB15, 1);
 741         if (pins & ATMEL_SSC_RK)
 742                 at91_set_A_periph(AT91_PIN_PB16, 1);
 743         if (pins & ATMEL_SSC_RF)
 744                 at91_set_A_periph(AT91_PIN_PB17, 1);
 745 }
 746
 747 /*
 748  * SSC controllers are accessed through library code, instead of any
 749  * kind of all-singing/all-dancing driver.  For example one could be
 750  * used by a particular I2S audio codec's driver, while another one
 751  * on the same system might be used by a custom data capture driver.
 752  */
 753 void __init at91_add_device_ssc(unsigned id, unsigned pins)
 754 {
 755         struct platform_device *pdev;
 756
 757         /*
 758          * NOTE: caller is responsible for passing information matching
 759          * "pins" to whatever will be using each particular controller.
 760          */
 761         switch (id) {
 762         case AT91RM9200_ID_SSC0:
 763                 pdev = &at91rm9200_ssc0_device;
 764                 configure_ssc0_pins(pins);
 765                 at91_clock_associate("ssc0_clk", &pdev->dev, "ssc");
 766                 break;
 767         case AT91RM9200_ID_SSC1:
 768                 pdev = &at91rm9200_ssc1_device;
 769                 configure_ssc1_pins(pins);
 770                 at91_clock_associate("ssc1_clk", &pdev->dev, "ssc");
 771                 break;
 772         case AT91RM9200_ID_SSC2:
 773                 pdev = &at91rm9200_ssc2_device;
 774                 configure_ssc2_pins(pins);
 775                 at91_clock_associate("ssc2_clk", &pdev->dev, "ssc");
 776                 break;
 777         default:
 778                 return;
 779         }
 780
 781         platform_device_register(pdev);
 782 }
 783
 784 #else
 785 void __init at91_add_device_ssc(unsigned id, unsigned pins) {}
 786 #endif
 787
 788
 789 /* --------------------------------------------------------------------
 790  *  UART
 791  * -------------------------------------------------------------------- */
 792
 793 #if defined(CONFIG_SERIAL_ATMEL)
 794 static struct resource dbgu_resources[] = {
 795         [0] = {
 796                 .start  = AT91_VA_BASE_SYS + AT91_DBGU,
 797                 .end    = AT91_VA_BASE_SYS + AT91_DBGU + SZ_512 - 1,
 798                 .flags  = IORESOURCE_MEM,
 799         },
 800         [1] = {
 801                 .start  = AT91_ID_SYS,
 802                 .end    = AT91_ID_SYS,
 803                 .flags  = IORESOURCE_IRQ,
 804         },
 805 };
 806
 807 static struct atmel_uart_data dbgu_data = {
 808         .use_dma_tx     = 0,
 809         .use_dma_rx     = 0,            /* DBGU not capable of receive DMA */
 810         .regs           = (void __iomem *)(AT91_VA_BASE_SYS + AT91_DBGU),
 811 };
 812
 813 static u64 dbgu_dmamask = DMA_BIT_MASK(32);
 814
 815 static struct platform_device at91rm9200_dbgu_device = {
 816         .name           = "atmel_usart",
 817         .id             = 0,
 818         .dev            = {
 819                                 .dma_mask               = &dbgu_dmamask,
 820                                 .coherent_dma_mask      = DMA_BIT_MASK(32),
 821                                 .platform_data          = &dbgu_data,
 822         },
 823         .resource       = dbgu_resources,
 824         .num_resources  = ARRAY_SIZE(dbgu_resources),
 825 };
 826
 827 static inline void configure_dbgu_pins(void)
 828 {
 829         at91_set_A_periph(AT91_PIN_PA30, 0);            /* DRXD */
 830         at91_set_A_periph(AT91_PIN_PA31, 1);            /* DTXD */
 831 }
 832
 833 static struct resource uart0_resources[] = {
 834         [0] = {
 835                 .start  = AT91RM9200_BASE_US0,
 836                 .end    = AT91RM9200_BASE_US0 + SZ_16K - 1,
 837                 .flags  = IORESOURCE_MEM,
 838         },
 839         [1] = {
 840                 .start  = AT91RM9200_ID_US0,
 841                 .end    = AT91RM9200_ID_US0,
 842                 .flags  = IORESOURCE_IRQ,
 843         },
 844 };
 845
 846 static struct atmel_uart_data uart0_data = {
 847         .use_dma_tx     = 1,
 848         .use_dma_rx     = 1,
 849 };
 850
 851 static u64 uart0_dmamask = DMA_BIT_MASK(32);
 852
 853 static struct platform_device at91rm9200_uart0_device = {
 854         .name           = "atmel_usart",
 855         .id             = 1,
 856         .dev            = {
 857                                 .dma_mask               = &uart0_dmamask,
 858                                 .coherent_dma_mask      = DMA_BIT_MASK(32),
 859                                 .platform_data          = &uart0_data,
 860         },
 861         .resource       = uart0_resources,
 862         .num_resources  = ARRAY_SIZE(uart0_resources),
 863 };
 864
 865 static inline void configure_usart0_pins(unsigned pins)
 866 {
 867         at91_set_A_periph(AT91_PIN_PA17, 1);            /* TXD0 */
 868         at91_set_A_periph(AT91_PIN_PA18, 0);            /* RXD0 */
 869
 870         if (pins & ATMEL_UART_CTS)
 871                 at91_set_A_periph(AT91_PIN_PA20, 0);    /* CTS0 */
 872
 873         if (pins & ATMEL_UART_RTS) {
 874                 /*
 875                  * AT91RM9200 Errata #39 - RTS0 is not internally connected to PA21.
 876                  *  We need to drive the pin manually.  Default is off (RTS is active low).
 877                  */
 878                 at91_set_gpio_output(AT91_PIN_PA21, 1);
 879         }
 880 }
 881
 882 static struct resource uart1_resources[] = {
 883         [0] = {
 884                 .start  = AT91RM9200_BASE_US1,
 885                 .end    = AT91RM9200_BASE_US1 + SZ_16K - 1,
 886                 .flags  = IORESOURCE_MEM,
 887         },
 888         [1] = {
 889                 .start  = AT91RM9200_ID_US1,
 890                 .end    = AT91RM9200_ID_US1,
 891                 .flags  = IORESOURCE_IRQ,
 892         },
 893 };
 894
 895 static struct atmel_uart_data uart1_data = {
 896         .use_dma_tx     = 1,
 897         .use_dma_rx     = 1,
 898 };
 899
 900 static u64 uart1_dmamask = DMA_BIT_MASK(32);
 901
 902 static struct platform_device at91rm9200_uart1_device = {
 903         .name           = "atmel_usart",
 904         .id             = 2,
 905         .dev            = {
 906                                 .dma_mask               = &uart1_dmamask,
 907                                 .coherent_dma_mask      = DMA_BIT_MASK(32),
 908                                 .platform_data          = &uart1_data,
 909         },
 910         .resource       = uart1_resources,
 911         .num_resources  = ARRAY_SIZE(uart1_resources),
 912 };
 913
 914 static inline void configure_usart1_pins(unsigned pins)
 915 {
 916         at91_set_A_periph(AT91_PIN_PB20, 1);            /* TXD1 */
 917         at91_set_A_periph(AT91_PIN_PB21, 0);            /* RXD1 */
 918
 919         if (pins & ATMEL_UART_RI)
 920                 at91_set_A_periph(AT91_PIN_PB18, 0);    /* RI1 */
 921         if (pins & ATMEL_UART_DTR)
 922                 at91_set_A_periph(AT91_PIN_PB19, 0);    /* DTR1 */
 923         if (pins & ATMEL_UART_DCD)
 924                 at91_set_A_periph(AT91_PIN_PB23, 0);    /* DCD1 */
 925         if (pins & ATMEL_UART_CTS)
 926                 at91_set_A_periph(AT91_PIN_PB24, 0);    /* CTS1 */
 927         if (pins & ATMEL_UART_DSR)
 928                 at91_set_A_periph(AT91_PIN_PB25, 0);    /* DSR1 */
 929         if (pins & ATMEL_UART_RTS)
 930                 at91_set_A_periph(AT91_PIN_PB26, 0);    /* RTS1 */
 931 }
 932
 933 static struct resource uart2_resources[] = {
 934         [0] = {
 935                 .start  = AT91RM9200_BASE_US2,
 936                 .end    = AT91RM9200_BASE_US2 + SZ_16K - 1,
 937                 .flags  = IORESOURCE_MEM,
 938         },
 939         [1] = {
 940                 .start  = AT91RM9200_ID_US2,
 941                 .end    = AT91RM9200_ID_US2,
 942                 .flags  = IORESOURCE_IRQ,
 943         },
 944 };
 945
 946 static struct atmel_uart_data uart2_data = {
 947         .use_dma_tx     = 1,
 948         .use_dma_rx     = 1,
 949 };
 950
 951 static u64 uart2_dmamask = DMA_BIT_MASK(32);
 952
 953 static struct platform_device at91rm9200_uart2_device = {
 954         .name           = "atmel_usart",
 955         .id             = 3,
 956         .dev            = {
 957                                 .dma_mask               = &uart2_dmamask,
 958                                 .coherent_dma_mask      = DMA_BIT_MASK(32),
 959                                 .platform_data          = &uart2_data,
 960         },
 961         .resource       = uart2_resources,
 962         .num_resources  = ARRAY_SIZE(uart2_resources),
 963 };
 964
 965 static inline void configure_usart2_pins(unsigned pins)
 966 {
 967         at91_set_A_periph(AT91_PIN_PA22, 0);            /* RXD2 */
 968         at91_set_A_periph(AT91_PIN_PA23, 1);            /* TXD2 */
 969
 970         if (pins & ATMEL_UART_CTS)
 971                 at91_set_B_periph(AT91_PIN_PA30, 0);    /* CTS2 */
 972         if (pins & ATMEL_UART_RTS)
 973                 at91_set_B_periph(AT91_PIN_PA31, 0);    /* RTS2 */
 974 }
 975
 976 static struct resource uart3_resources[] = {
 977         [0] = {
 978                 .start  = AT91RM9200_BASE_US3,
 979                 .end    = AT91RM9200_BASE_US3 + SZ_16K - 1,
 980                 .flags  = IORESOURCE_MEM,
 981         },
 982         [1] = {
 983                 .start  = AT91RM9200_ID_US3,
 984                 .end    = AT91RM9200_ID_US3,
 985                 .flags  = IORESOURCE_IRQ,
 986         },
 987 };
 988
 989 static struct atmel_uart_data uart3_data = {
 990         .use_dma_tx     = 1,
 991         .use_dma_rx     = 1,
 992 };
 993
 994 static u64 uart3_dmamask = DMA_BIT_MASK(32);
 995
 996 static struct platform_device at91rm9200_uart3_device = {
 997         .name           = "atmel_usart",
 998         .id             = 4,
 999         .dev            = {
1000                                 .dma_mask               = &uart3_dmamask,
1001                                 .coherent_dma_mask      = DMA_BIT_MASK(32),
1002                                 .platform_data          = &uart3_data,
1003         },
1004         .resource       = uart3_resources,
1005         .num_resources  = ARRAY_SIZE(uart3_resources),
1006 };
1007
1008 static inline void configure_usart3_pins(unsigned pins)
1009 {
1010         at91_set_B_periph(AT91_PIN_PA5, 1);             /* TXD3 */
1011         at91_set_B_periph(AT91_PIN_PA6, 0);             /* RXD3 */
1012
1013         if (pins & ATMEL_UART_CTS)
1014                 at91_set_B_periph(AT91_PIN_PB1, 0);     /* CTS3 */
1015         if (pins & ATMEL_UART_RTS)
1016                 at91_set_B_periph(AT91_PIN_PB0, 0);     /* RTS3 */
1017 }
1018
1019 static struct platform_device *at91_uarts[ATMEL_MAX_UART];      /* the UARTs to use */
1020 struct platform_device *atmel_default_console_device;   /* the serial console device */
1021
1022 void __init __deprecated at91_init_serial(struct at91_uart_config *config)
1023 {
1024         int i;
1025
1026         /* Fill in list of supported UARTs */
1027         for (i = 0; i < config->nr_tty; i++) {
1028                 switch (config->tty_map[i]) {
1029                         case 0:
1030                                 configure_usart0_pins(ATMEL_UART_CTS | ATMEL_UART_RTS);
1031                                 at91_uarts[i] = &at91rm9200_uart0_device;
1032                                 at91_clock_associate("usart0_clk", &at91rm9200_uart0_device.dev, "usart");
1033                                 break;
1034                         case 1:
1035                                 configure_usart1_pins(ATMEL_UART_CTS | ATMEL_UART_RTS | ATMEL_UART_DSR | ATMEL_UART_DTR | ATMEL_UART_DCD | ATMEL_UART_RI);
1036                                 at91_uarts[i] = &at91rm9200_uart1_device;
1037                                 at91_clock_associate("usart1_clk", &at91rm9200_uart1_device.dev, "usart");
1038                                 break;
1039                         case 2:
1040                                 configure_usart2_pins(0);
1041                                 at91_uarts[i] = &at91rm9200_uart2_device;
1042                                 at91_clock_associate("usart2_clk", &at91rm9200_uart2_device.dev, "usart");
1043                                 break;
1044                         case 3:
1045                                 configure_usart3_pins(0);
1046                                 at91_uarts[i] = &at91rm9200_uart3_device;
1047                                 at91_clock_associate("usart3_clk", &at91rm9200_uart3_device.dev, "usart");
1048                                 break;
1049                         case 4:
1050                                 configure_dbgu_pins();
1051                                 at91_uarts[i] = &at91rm9200_dbgu_device;
1052                                 at91_clock_associate("mck", &at91rm9200_dbgu_device.dev, "usart");
1053                                 break;
1054                         default:
1055                                 continue;
1056                 }
1057                 at91_uarts[i]->id = i;          /* update ID number to mapped ID */
1058         }
1059
1060         /* Set serial console device */
1061         if (config->console_tty < ATMEL_MAX_UART)
1062                 atmel_default_console_device = at91_uarts[config->console_tty];
1063         if (!atmel_default_console_device)
1064                 printk(KERN_INFO "AT91: No default serial console defined.\n");
1065 }
1066
1067 void __init at91_register_uart(unsigned id, unsigned portnr, unsigned pins)
1068 {
1069         struct platform_device *pdev;
1070
1071         switch (id) {
1072                 case 0:         /* DBGU */
1073                         pdev = &at91rm9200_dbgu_device;
1074                         configure_dbgu_pins();
1075                         at91_clock_associate("mck", &pdev->dev, "usart");
1076                         break;
1077                 case AT91RM9200_ID_US0:
1078                         pdev = &at91rm9200_uart0_device;
1079                         configure_usart0_pins(pins);
1080                         at91_clock_associate("usart0_clk", &pdev->dev, "usart");
1081                         break;
1082                 case AT91RM9200_ID_US1:
1083                         pdev = &at91rm9200_uart1_device;
1084                         configure_usart1_pins(pins);
1085                         at91_clock_associate("usart1_clk", &pdev->dev, "usart");
1086                         break;
1087                 case AT91RM9200_ID_US2:
1088                         pdev = &at91rm9200_uart2_device;
1089                         configure_usart2_pins(pins);
1090                         at91_clock_associate("usart2_clk", &pdev->dev, "usart");
1091                         break;
1092                 case AT91RM9200_ID_US3:
1093                         pdev = &at91rm9200_uart3_device;
1094                         configure_usart3_pins(pins);
1095                         at91_clock_associate("usart3_clk", &pdev->dev, "usart");
1096                         break;
1097                 default:
1098                         return;
1099         }
1100         pdev->id = portnr;              /* update to mapped ID */
1101
1102         if (portnr < ATMEL_MAX_UART)
1103                 at91_uarts[portnr] = pdev;
1104 }
1105
1106 void __init at91_set_serial_console(unsigned portnr)
1107 {
1108         if (portnr < ATMEL_MAX_UART)
1109                 atmel_default_console_device = at91_uarts[portnr];
1110         if (!atmel_default_console_device)
1111                 printk(KERN_INFO "AT91: No default serial console defined.\n");
1112 }
1113
1114 void __init at91_add_device_serial(void)
1115 {
1116         int i;
1117
1118         for (i = 0; i < ATMEL_MAX_UART; i++) {
1119                 if (at91_uarts[i])
1120                         platform_device_register(at91_uarts[i]);
1121         }
1122 }
1123 #else
1124 void __init __deprecated at91_init_serial(struct at91_uart_config *config) {}
1125 void __init at91_register_uart(unsigned id, unsigned portnr, unsigned pins) {}
1126 void __init at91_set_serial_console(unsigned portnr) {}
1127 void __init at91_add_device_serial(void) {}
1128 #endif
1129
1130
1131 /* -------------------------------------------------------------------- */
1132
1133 /*
1134  * These devices are always present and don't need any board-specific
1135  * setup.
1136  */
1137 static int __init at91_add_standard_devices(void)
1138 {
1139         at91_add_device_rtc();
1140         at91_add_device_watchdog();
1141         return 0;
1142 }
1143
1144 arch_initcall(at91_add_standard_devices);