git.oblomov.eu Git - linux-2.6/blob - arch/arm/mach-at91/at91sam9rl_devices.c

   1 /*
   2  *  Copyright (C) 2007 Atmel Corporation
   3  *
   4  * This file is subject to the terms and conditions of the GNU General Public
   5  * License.  See the file COPYING in the main directory of this archive for
   6  * more details.
   7  */
   8
   9 #include <asm/mach/arch.h>
  10 #include <asm/mach/map.h>
  11
  12 #include <linux/platform_device.h>
  13 #include <linux/i2c-gpio.h>
  14
  15 #include <linux/fb.h>
  16 #include <video/atmel_lcdc.h>
  17
  18 #include <asm/arch/board.h>
  19 #include <asm/arch/gpio.h>
  20 #include <asm/arch/at91sam9rl.h>
  21 #include <asm/arch/at91sam9rl_matrix.h>
  22 #include <asm/arch/at91sam926x_mc.h>
  23
  24 #include "generic.h"
  25
  26
  27 /* --------------------------------------------------------------------
  28  *  MMC / SD
  29  * -------------------------------------------------------------------- */
  30
  31 #if defined(CONFIG_MMC_AT91) || defined(CONFIG_MMC_AT91_MODULE)
  32 static u64 mmc_dmamask = 0xffffffffUL;
  33 static struct at91_mmc_data mmc_data;
  34
  35 static struct resource mmc_resources[] = {
  36         [0] = {
  37                 .start  = AT91SAM9RL_BASE_MCI,
  38                 .end    = AT91SAM9RL_BASE_MCI + SZ_16K - 1,
  39                 .flags  = IORESOURCE_MEM,
  40         },
  41         [1] = {
  42                 .start  = AT91SAM9RL_ID_MCI,
  43                 .end    = AT91SAM9RL_ID_MCI,
  44                 .flags  = IORESOURCE_IRQ,
  45         },
  46 };
  47
  48 static struct platform_device at91sam9rl_mmc_device = {
  49         .name           = "at91_mci",
  50         .id             = -1,
  51         .dev            = {
  52                                 .dma_mask               = &mmc_dmamask,
  53                                 .coherent_dma_mask      = 0xffffffff,
  54                                 .platform_data          = &mmc_data,
  55         },
  56         .resource       = mmc_resources,
  57         .num_resources  = ARRAY_SIZE(mmc_resources),
  58 };
  59
  60 void __init at91_add_device_mmc(short mmc_id, struct at91_mmc_data *data)
  61 {
  62         if (!data)
  63                 return;
  64
  65         /* input/irq */
  66         if (data->det_pin) {
  67                 at91_set_gpio_input(data->det_pin, 1);
  68                 at91_set_deglitch(data->det_pin, 1);
  69         }
  70         if (data->wp_pin)
  71                 at91_set_gpio_input(data->wp_pin, 1);
  72         if (data->vcc_pin)
  73                 at91_set_gpio_output(data->vcc_pin, 0);
  74
  75         /* CLK */
  76         at91_set_A_periph(AT91_PIN_PA2, 0);
  77
  78         /* CMD */
  79         at91_set_A_periph(AT91_PIN_PA1, 1);
  80
  81         /* DAT0, maybe DAT1..DAT3 */
  82         at91_set_A_periph(AT91_PIN_PA0, 1);
  83         if (data->wire4) {
  84                 at91_set_A_periph(AT91_PIN_PA3, 1);
  85                 at91_set_A_periph(AT91_PIN_PA4, 1);
  86                 at91_set_A_periph(AT91_PIN_PA5, 1);
  87         }
  88
  89         mmc_data = *data;
  90         platform_device_register(&at91sam9rl_mmc_device);
  91 }
  92 #else
  93 void __init at91_add_device_mmc(short mmc_id, struct at91_mmc_data *data) {}
  94 #endif
  95
  96
  97 /* --------------------------------------------------------------------
  98  *  NAND / SmartMedia
  99  * -------------------------------------------------------------------- */
 100
 101 #if defined(CONFIG_MTD_NAND_AT91) || defined(CONFIG_MTD_NAND_AT91_MODULE)
 102 static struct at91_nand_data nand_data;
 103
 104 #define NAND_BASE       AT91_CHIPSELECT_3
 105
 106 static struct resource nand_resources[] = {
 107         {
 108                 .start  = NAND_BASE,
 109                 .end    = NAND_BASE + SZ_256M - 1,
 110                 .flags  = IORESOURCE_MEM,
 111         }
 112 };
 113
 114 static struct platform_device at91_nand_device = {
 115         .name           = "at91_nand",
 116         .id             = -1,
 117         .dev            = {
 118                                 .platform_data  = &nand_data,
 119         },
 120         .resource       = nand_resources,
 121         .num_resources  = ARRAY_SIZE(nand_resources),
 122 };
 123
 124 void __init at91_add_device_nand(struct at91_nand_data *data)
 125 {
 126         unsigned long csa;
 127
 128         if (!data)
 129                 return;
 130
 131         csa = at91_sys_read(AT91_MATRIX_EBICSA);
 132         at91_sys_write(AT91_MATRIX_EBICSA, csa | AT91_MATRIX_CS3A_SMC_SMARTMEDIA);
 133
 134         /* set the bus interface characteristics */
 135         at91_sys_write(AT91_SMC_SETUP(3), AT91_SMC_NWESETUP_(0) | AT91_SMC_NCS_WRSETUP_(0)
 136                         | AT91_SMC_NRDSETUP_(0) | AT91_SMC_NCS_RDSETUP_(0));
 137
 138         at91_sys_write(AT91_SMC_PULSE(3), AT91_SMC_NWEPULSE_(2) | AT91_SMC_NCS_WRPULSE_(5)
 139                         | AT91_SMC_NRDPULSE_(2) | AT91_SMC_NCS_RDPULSE_(5));
 140
 141         at91_sys_write(AT91_SMC_CYCLE(3), AT91_SMC_NWECYCLE_(7) | AT91_SMC_NRDCYCLE_(7));
 142
 143         at91_sys_write(AT91_SMC_MODE(3), AT91_SMC_DBW_8 | AT91_SMC_READMODE | AT91_SMC_WRITEMODE | AT91_SMC_EXNWMODE_DISABLE | AT91_SMC_TDF_(1));
 144
 145         /* enable pin */
 146         if (data->enable_pin)
 147                 at91_set_gpio_output(data->enable_pin, 1);
 148
 149         /* ready/busy pin */
 150         if (data->rdy_pin)
 151                 at91_set_gpio_input(data->rdy_pin, 1);
 152
 153         /* card detect pin */
 154         if (data->det_pin)
 155                 at91_set_gpio_input(data->det_pin, 1);
 156
 157         at91_set_A_periph(AT91_PIN_PB4, 0);             /* NANDOE */
 158         at91_set_A_periph(AT91_PIN_PB5, 0);             /* NANDWE */
 159
 160         nand_data = *data;
 161         platform_device_register(&at91_nand_device);
 162 }
 163
 164 #else
 165 void __init at91_add_device_nand(struct at91_nand_data *data) {}
 166 #endif
 167
 168
 169 /* --------------------------------------------------------------------
 170  *  TWI (i2c)
 171  * -------------------------------------------------------------------- */
 172
 173 /*
 174  * Prefer the GPIO code since the TWI controller isn't robust
 175  * (gets overruns and underruns under load) and can only issue
 176  * repeated STARTs in one scenario (the driver doesn't yet handle them).
 177  */
 178 #if defined(CONFIG_I2C_GPIO) || defined(CONFIG_I2C_GPIO_MODULE)
 179
 180 static struct i2c_gpio_platform_data pdata = {
 181         .sda_pin                = AT91_PIN_PA23,
 182         .sda_is_open_drain      = 1,
 183         .scl_pin                = AT91_PIN_PA24,
 184         .scl_is_open_drain      = 1,
 185         .udelay                 = 2,            /* ~100 kHz */
 186 };
 187
 188 static struct platform_device at91sam9rl_twi_device = {
 189         .name                   = "i2c-gpio",
 190         .id                     = -1,
 191         .dev.platform_data      = &pdata,
 192 };
 193
 194 void __init at91_add_device_i2c(struct i2c_board_info *devices, int nr_devices)
 195 {
 196         at91_set_GPIO_periph(AT91_PIN_PA23, 1);         /* TWD (SDA) */
 197         at91_set_multi_drive(AT91_PIN_PA23, 1);
 198
 199         at91_set_GPIO_periph(AT91_PIN_PA24, 1);         /* TWCK (SCL) */
 200         at91_set_multi_drive(AT91_PIN_PA24, 1);
 201
 202         i2c_register_board_info(0, devices, nr_devices);
 203         platform_device_register(&at91sam9rl_twi_device);
 204 }
 205
 206 #elif defined(CONFIG_I2C_AT91) || defined(CONFIG_I2C_AT91_MODULE)
 207
 208 static struct resource twi_resources[] = {
 209         [0] = {
 210                 .start  = AT91SAM9RL_BASE_TWI0,
 211                 .end    = AT91SAM9RL_BASE_TWI0 + SZ_16K - 1,
 212                 .flags  = IORESOURCE_MEM,
 213         },
 214         [1] = {
 215                 .start  = AT91SAM9RL_ID_TWI0,
 216                 .end    = AT91SAM9RL_ID_TWI0,
 217                 .flags  = IORESOURCE_IRQ,
 218         },
 219 };
 220
 221 static struct platform_device at91sam9rl_twi_device = {
 222         .name           = "at91_i2c",
 223         .id             = -1,
 224         .resource       = twi_resources,
 225         .num_resources  = ARRAY_SIZE(twi_resources),
 226 };
 227
 228 void __init at91_add_device_i2c(struct i2c_board_info *devices, int nr_devices)
 229 {
 230         /* pins used for TWI interface */
 231         at91_set_A_periph(AT91_PIN_PA23, 0);            /* TWD */
 232         at91_set_multi_drive(AT91_PIN_PA23, 1);
 233
 234         at91_set_A_periph(AT91_PIN_PA24, 0);            /* TWCK */
 235         at91_set_multi_drive(AT91_PIN_PA24, 1);
 236
 237         i2c_register_board_info(0, devices, nr_devices);
 238         platform_device_register(&at91sam9rl_twi_device);
 239 }
 240 #else
 241 void __init at91_add_device_i2c(struct i2c_board_info *devices, int nr_devices) {}
 242 #endif
 243
 244
 245 /* --------------------------------------------------------------------
 246  *  SPI
 247  * -------------------------------------------------------------------- */
 248
 249 #if defined(CONFIG_SPI_ATMEL) || defined(CONFIG_SPI_ATMEL_MODULE)
 250 static u64 spi_dmamask = 0xffffffffUL;
 251
 252 static struct resource spi_resources[] = {
 253         [0] = {
 254                 .start  = AT91SAM9RL_BASE_SPI,
 255                 .end    = AT91SAM9RL_BASE_SPI + SZ_16K - 1,
 256                 .flags  = IORESOURCE_MEM,
 257         },
 258         [1] = {
 259                 .start  = AT91SAM9RL_ID_SPI,
 260                 .end    = AT91SAM9RL_ID_SPI,
 261                 .flags  = IORESOURCE_IRQ,
 262         },
 263 };
 264
 265 static struct platform_device at91sam9rl_spi_device = {
 266         .name           = "atmel_spi",
 267         .id             = 0,
 268         .dev            = {
 269                                 .dma_mask               = &spi_dmamask,
 270                                 .coherent_dma_mask      = 0xffffffff,
 271         },
 272         .resource       = spi_resources,
 273         .num_resources  = ARRAY_SIZE(spi_resources),
 274 };
 275
 276 static const unsigned spi_standard_cs[4] = { AT91_PIN_PA28, AT91_PIN_PB7, AT91_PIN_PD8, AT91_PIN_PD9 };
 277
 278
 279 void __init at91_add_device_spi(struct spi_board_info *devices, int nr_devices)
 280 {
 281         int i;
 282         unsigned long cs_pin;
 283
 284         at91_set_A_periph(AT91_PIN_PA25, 0);    /* MISO */
 285         at91_set_A_periph(AT91_PIN_PA26, 0);    /* MOSI */
 286         at91_set_A_periph(AT91_PIN_PA27, 0);    /* SPCK */
 287
 288         /* Enable SPI chip-selects */
 289         for (i = 0; i < nr_devices; i++) {
 290                 if (devices[i].controller_data)
 291                         cs_pin = (unsigned long) devices[i].controller_data;
 292                 else
 293                         cs_pin = spi_standard_cs[devices[i].chip_select];
 294
 295                 /* enable chip-select pin */
 296                 at91_set_gpio_output(cs_pin, 1);
 297
 298                 /* pass chip-select pin to driver */
 299                 devices[i].controller_data = (void *) cs_pin;
 300         }
 301
 302         spi_register_board_info(devices, nr_devices);
 303         platform_device_register(&at91sam9rl_spi_device);
 304 }
 305 #else
 306 void __init at91_add_device_spi(struct spi_board_info *devices, int nr_devices) {}
 307 #endif
 308
 309
 310 /* --------------------------------------------------------------------
 311  *  LCD Controller
 312  * -------------------------------------------------------------------- */
 313
 314 #if defined(CONFIG_FB_ATMEL) || defined(CONFIG_FB_ATMEL_MODULE)
 315 static u64 lcdc_dmamask = 0xffffffffUL;
 316 static struct atmel_lcdfb_info lcdc_data;
 317
 318 static struct resource lcdc_resources[] = {
 319         [0] = {
 320                 .start  = AT91SAM9RL_LCDC_BASE,
 321                 .end    = AT91SAM9RL_LCDC_BASE + SZ_4K - 1,
 322                 .flags  = IORESOURCE_MEM,
 323         },
 324         [1] = {
 325                 .start  = AT91SAM9RL_ID_LCDC,
 326                 .end    = AT91SAM9RL_ID_LCDC,
 327                 .flags  = IORESOURCE_IRQ,
 328         },
 329 #if defined(CONFIG_FB_INTSRAM)
 330         [2] = {
 331                 .start  = AT91SAM9RL_SRAM_BASE,
 332                 .end    = AT91SAM9RL_SRAM_BASE + AT91SAM9RL_SRAM_SIZE - 1,
 333                 .flags  = IORESOURCE_MEM,
 334         },
 335 #endif
 336 };
 337
 338 static struct platform_device at91_lcdc_device = {
 339         .name           = "atmel_lcdfb",
 340         .id             = 0,
 341         .dev            = {
 342                                 .dma_mask               = &lcdc_dmamask,
 343                                 .coherent_dma_mask      = 0xffffffff,
 344                                 .platform_data          = &lcdc_data,
 345         },
 346         .resource       = lcdc_resources,
 347         .num_resources  = ARRAY_SIZE(lcdc_resources),
 348 };
 349
 350 void __init at91_add_device_lcdc(struct atmel_lcdfb_info *data)
 351 {
 352         if (!data) {
 353                 return;
 354         }
 355
 356         at91_set_B_periph(AT91_PIN_PC1, 0);     /* LCDPWR */
 357         at91_set_A_periph(AT91_PIN_PC5, 0);     /* LCDHSYNC */
 358         at91_set_A_periph(AT91_PIN_PC6, 0);     /* LCDDOTCK */
 359         at91_set_A_periph(AT91_PIN_PC7, 0);     /* LCDDEN */
 360         at91_set_A_periph(AT91_PIN_PC3, 0);     /* LCDCC */
 361         at91_set_B_periph(AT91_PIN_PC9, 0);     /* LCDD3 */
 362         at91_set_B_periph(AT91_PIN_PC10, 0);    /* LCDD4 */
 363         at91_set_B_periph(AT91_PIN_PC11, 0);    /* LCDD5 */
 364         at91_set_B_periph(AT91_PIN_PC12, 0);    /* LCDD6 */
 365         at91_set_B_periph(AT91_PIN_PC13, 0);    /* LCDD7 */
 366         at91_set_B_periph(AT91_PIN_PC15, 0);    /* LCDD11 */
 367         at91_set_B_periph(AT91_PIN_PC16, 0);    /* LCDD12 */
 368         at91_set_B_periph(AT91_PIN_PC17, 0);    /* LCDD13 */
 369         at91_set_B_periph(AT91_PIN_PC18, 0);    /* LCDD14 */
 370         at91_set_B_periph(AT91_PIN_PC19, 0);    /* LCDD15 */
 371         at91_set_B_periph(AT91_PIN_PC20, 0);    /* LCDD18 */
 372         at91_set_B_periph(AT91_PIN_PC21, 0);    /* LCDD19 */
 373         at91_set_B_periph(AT91_PIN_PC22, 0);    /* LCDD20 */
 374         at91_set_B_periph(AT91_PIN_PC23, 0);    /* LCDD21 */
 375         at91_set_B_periph(AT91_PIN_PC24, 0);    /* LCDD22 */
 376         at91_set_B_periph(AT91_PIN_PC25, 0);    /* LCDD23 */
 377
 378         lcdc_data = *data;
 379         platform_device_register(&at91_lcdc_device);
 380 }
 381 #else
 382 void __init at91_add_device_lcdc(struct atmel_lcdfb_info *data) {}
 383 #endif
 384
 385
 386 /* --------------------------------------------------------------------
 387  *  LEDs
 388  * -------------------------------------------------------------------- */
 389
 390 #if defined(CONFIG_LEDS)
 391 u8 at91_leds_cpu;
 392 u8 at91_leds_timer;
 393
 394 void __init at91_init_leds(u8 cpu_led, u8 timer_led)
 395 {
 396         /* Enable GPIO to access the LEDs */
 397         at91_set_gpio_output(cpu_led, 1);
 398         at91_set_gpio_output(timer_led, 1);
 399
 400         at91_leds_cpu   = cpu_led;
 401         at91_leds_timer = timer_led;
 402 }
 403 #else
 404 void __init at91_init_leds(u8 cpu_led, u8 timer_led) {}
 405 #endif
 406
 407
 408 /* --------------------------------------------------------------------
 409  *  UART
 410  * -------------------------------------------------------------------- */
 411
 412 #if defined(CONFIG_SERIAL_ATMEL)
 413 static struct resource dbgu_resources[] = {
 414         [0] = {
 415                 .start  = AT91_VA_BASE_SYS + AT91_DBGU,
 416                 .end    = AT91_VA_BASE_SYS + AT91_DBGU + SZ_512 - 1,
 417                 .flags  = IORESOURCE_MEM,
 418         },
 419         [1] = {
 420                 .start  = AT91_ID_SYS,
 421                 .end    = AT91_ID_SYS,
 422                 .flags  = IORESOURCE_IRQ,
 423         },
 424 };
 425
 426 static struct atmel_uart_data dbgu_data = {
 427         .use_dma_tx     = 0,
 428         .use_dma_rx     = 0,            /* DBGU not capable of receive DMA */
 429         .regs           = (void __iomem *)(AT91_VA_BASE_SYS + AT91_DBGU),
 430 };
 431
 432 static struct platform_device at91sam9rl_dbgu_device = {
 433         .name           = "atmel_usart",
 434         .id             = 0,
 435         .dev            = {
 436                                 .platform_data  = &dbgu_data,
 437                                 .coherent_dma_mask = 0xffffffff,
 438         },
 439         .resource       = dbgu_resources,
 440         .num_resources  = ARRAY_SIZE(dbgu_resources),
 441 };
 442
 443 static inline void configure_dbgu_pins(void)
 444 {
 445         at91_set_A_periph(AT91_PIN_PA21, 0);            /* DRXD */
 446         at91_set_A_periph(AT91_PIN_PA22, 1);            /* DTXD */
 447 }
 448
 449 static struct resource uart0_resources[] = {
 450         [0] = {
 451                 .start  = AT91SAM9RL_BASE_US0,
 452                 .end    = AT91SAM9RL_BASE_US0 + SZ_16K - 1,
 453                 .flags  = IORESOURCE_MEM,
 454         },
 455         [1] = {
 456                 .start  = AT91SAM9RL_ID_US0,
 457                 .end    = AT91SAM9RL_ID_US0,
 458                 .flags  = IORESOURCE_IRQ,
 459         },
 460 };
 461
 462 static struct atmel_uart_data uart0_data = {
 463         .use_dma_tx     = 1,
 464         .use_dma_rx     = 1,
 465 };
 466
 467 static struct platform_device at91sam9rl_uart0_device = {
 468         .name           = "atmel_usart",
 469         .id             = 1,
 470         .dev            = {
 471                                 .platform_data  = &uart0_data,
 472                                 .coherent_dma_mask = 0xffffffff,
 473         },
 474         .resource       = uart0_resources,
 475         .num_resources  = ARRAY_SIZE(uart0_resources),
 476 };
 477
 478 static inline void configure_usart0_pins(void)
 479 {
 480         at91_set_A_periph(AT91_PIN_PA6, 1);             /* TXD0 */
 481         at91_set_A_periph(AT91_PIN_PA7, 0);             /* RXD0 */
 482         at91_set_A_periph(AT91_PIN_PA9, 0);             /* RTS0 */
 483         at91_set_A_periph(AT91_PIN_PA10, 0);            /* CTS0 */
 484 }
 485
 486 static struct resource uart1_resources[] = {
 487         [0] = {
 488                 .start  = AT91SAM9RL_BASE_US1,
 489                 .end    = AT91SAM9RL_BASE_US1 + SZ_16K - 1,
 490                 .flags  = IORESOURCE_MEM,
 491         },
 492         [1] = {
 493                 .start  = AT91SAM9RL_ID_US1,
 494                 .end    = AT91SAM9RL_ID_US1,
 495                 .flags  = IORESOURCE_IRQ,
 496         },
 497 };
 498
 499 static struct atmel_uart_data uart1_data = {
 500         .use_dma_tx     = 1,
 501         .use_dma_rx     = 1,
 502 };
 503
 504 static struct platform_device at91sam9rl_uart1_device = {
 505         .name           = "atmel_usart",
 506         .id             = 2,
 507         .dev            = {
 508                                 .platform_data  = &uart1_data,
 509                                 .coherent_dma_mask = 0xffffffff,
 510         },
 511         .resource       = uart1_resources,
 512         .num_resources  = ARRAY_SIZE(uart1_resources),
 513 };
 514
 515 static inline void configure_usart1_pins(void)
 516 {
 517         at91_set_A_periph(AT91_PIN_PA11, 1);            /* TXD1 */
 518         at91_set_A_periph(AT91_PIN_PA12, 0);            /* RXD1 */
 519 }
 520
 521 static struct resource uart2_resources[] = {
 522         [0] = {
 523                 .start  = AT91SAM9RL_BASE_US2,
 524                 .end    = AT91SAM9RL_BASE_US2 + SZ_16K - 1,
 525                 .flags  = IORESOURCE_MEM,
 526         },
 527         [1] = {
 528                 .start  = AT91SAM9RL_ID_US2,
 529                 .end    = AT91SAM9RL_ID_US2,
 530                 .flags  = IORESOURCE_IRQ,
 531         },
 532 };
 533
 534 static struct atmel_uart_data uart2_data = {
 535         .use_dma_tx     = 1,
 536         .use_dma_rx     = 1,
 537 };
 538
 539 static struct platform_device at91sam9rl_uart2_device = {
 540         .name           = "atmel_usart",
 541         .id             = 3,
 542         .dev            = {
 543                                 .platform_data  = &uart2_data,
 544                                 .coherent_dma_mask = 0xffffffff,
 545         },
 546         .resource       = uart2_resources,
 547         .num_resources  = ARRAY_SIZE(uart2_resources),
 548 };
 549
 550 static inline void configure_usart2_pins(void)
 551 {
 552         at91_set_A_periph(AT91_PIN_PA13, 1);            /* TXD2 */
 553         at91_set_A_periph(AT91_PIN_PA14, 0);            /* RXD2 */
 554 }
 555
 556 static struct resource uart3_resources[] = {
 557         [0] = {
 558                 .start  = AT91SAM9RL_BASE_US3,
 559                 .end    = AT91SAM9RL_BASE_US3 + SZ_16K - 1,
 560                 .flags  = IORESOURCE_MEM,
 561         },
 562         [1] = {
 563                 .start  = AT91SAM9RL_ID_US3,
 564                 .end    = AT91SAM9RL_ID_US3,
 565                 .flags  = IORESOURCE_IRQ,
 566         },
 567 };
 568
 569 static struct atmel_uart_data uart3_data = {
 570         .use_dma_tx     = 1,
 571         .use_dma_rx     = 1,
 572 };
 573
 574 static struct platform_device at91sam9rl_uart3_device = {
 575         .name           = "atmel_usart",
 576         .id             = 4,
 577         .dev            = {
 578                                 .platform_data  = &uart3_data,
 579                                 .coherent_dma_mask = 0xffffffff,
 580         },
 581         .resource       = uart3_resources,
 582         .num_resources  = ARRAY_SIZE(uart3_resources),
 583 };
 584
 585 static inline void configure_usart3_pins(void)
 586 {
 587         at91_set_A_periph(AT91_PIN_PB0, 1);             /* TXD3 */
 588         at91_set_A_periph(AT91_PIN_PB1, 0);             /* RXD3 */
 589 }
 590
 591 struct platform_device *at91_uarts[ATMEL_MAX_UART];     /* the UARTs to use */
 592 struct platform_device *atmel_default_console_device;   /* the serial console device */
 593
 594 void __init at91_init_serial(struct at91_uart_config *config)
 595 {
 596         int i;
 597
 598         /* Fill in list of supported UARTs */
 599         for (i = 0; i < config->nr_tty; i++) {
 600                 switch (config->tty_map[i]) {
 601                         case 0:
 602                                 configure_usart0_pins();
 603                                 at91_uarts[i] = &at91sam9rl_uart0_device;
 604                                 at91_clock_associate("usart0_clk", &at91sam9rl_uart0_device.dev, "usart");
 605                                 break;
 606                         case 1:
 607                                 configure_usart1_pins();
 608                                 at91_uarts[i] = &at91sam9rl_uart1_device;
 609                                 at91_clock_associate("usart1_clk", &at91sam9rl_uart1_device.dev, "usart");
 610                                 break;
 611                         case 2:
 612                                 configure_usart2_pins();
 613                                 at91_uarts[i] = &at91sam9rl_uart2_device;
 614                                 at91_clock_associate("usart2_clk", &at91sam9rl_uart2_device.dev, "usart");
 615                                 break;
 616                         case 3:
 617                                 configure_usart3_pins();
 618                                 at91_uarts[i] = &at91sam9rl_uart3_device;
 619                                 at91_clock_associate("usart3_clk", &at91sam9rl_uart3_device.dev, "usart");
 620                                 break;
 621                         case 4:
 622                                 configure_dbgu_pins();
 623                                 at91_uarts[i] = &at91sam9rl_dbgu_device;
 624                                 at91_clock_associate("mck", &at91sam9rl_dbgu_device.dev, "usart");
 625                                 break;
 626                         default:
 627                                 continue;
 628                 }
 629                 at91_uarts[i]->id = i;          /* update ID number to mapped ID */
 630         }
 631
 632         /* Set serial console device */
 633         if (config->console_tty < ATMEL_MAX_UART)
 634                 atmel_default_console_device = at91_uarts[config->console_tty];
 635         if (!atmel_default_console_device)
 636                 printk(KERN_INFO "AT91: No default serial console defined.\n");
 637 }
 638
 639 void __init at91_add_device_serial(void)
 640 {
 641         int i;
 642
 643         for (i = 0; i < ATMEL_MAX_UART; i++) {
 644                 if (at91_uarts[i])
 645                         platform_device_register(at91_uarts[i]);
 646         }
 647 }
 648 #else
 649 void __init at91_init_serial(struct at91_uart_config *config) {}
 650 void __init at91_add_device_serial(void) {}
 651 #endif
 652
 653
 654 /* -------------------------------------------------------------------- */
 655
 656 /*
 657  * These devices are always present and don't need any board-specific
 658  * setup.
 659  */
 660 static int __init at91_add_standard_devices(void)
 661 {
 662         return 0;
 663 }
 664
 665 arch_initcall(at91_add_standard_devices);