arch/arm/mach-at91/at91sam9261_devices.c

   1 /*
   2  * arch/arm/mach-at91/at91sam9261_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 <linux/fb.h>
  21 #include <video/atmel_lcdc.h>
  22
  23 #include <asm/arch/board.h>
  24 #include <asm/arch/gpio.h>
  25 #include <asm/arch/at91sam9261.h>
  26 #include <asm/arch/at91sam9261_matrix.h>
  27 #include <asm/arch/at91sam926x_mc.h>
  28
  29 #include "generic.h"
  30
  31
  32 /* --------------------------------------------------------------------
  33  *  USB Host
  34  * -------------------------------------------------------------------- */
  35
  36 #if defined(CONFIG_USB_OHCI_HCD) || defined(CONFIG_USB_OHCI_HCD_MODULE)
  37 static u64 ohci_dmamask = DMA_BIT_MASK(32);
  38 static struct at91_usbh_data usbh_data;
  39
  40 static struct resource usbh_resources[] = {
  41         [0] = {
  42                 .start  = AT91SAM9261_UHP_BASE,
  43                 .end    = AT91SAM9261_UHP_BASE + SZ_1M - 1,
  44                 .flags  = IORESOURCE_MEM,
  45         },
  46         [1] = {
  47                 .start  = AT91SAM9261_ID_UHP,
  48                 .end    = AT91SAM9261_ID_UHP,
  49                 .flags  = IORESOURCE_IRQ,
  50         },
  51 };
  52
  53 static struct platform_device at91sam9261_usbh_device = {
  54         .name           = "at91_ohci",
  55         .id             = -1,
  56         .dev            = {
  57                                 .dma_mask               = &ohci_dmamask,
  58                                 .coherent_dma_mask      = DMA_BIT_MASK(32),
  59                                 .platform_data          = &usbh_data,
  60         },
  61         .resource       = usbh_resources,
  62         .num_resources  = ARRAY_SIZE(usbh_resources),
  63 };
  64
  65 void __init at91_add_device_usbh(struct at91_usbh_data *data)
  66 {
  67         if (!data)
  68                 return;
  69
  70         usbh_data = *data;
  71         platform_device_register(&at91sam9261_usbh_device);
  72 }
  73 #else
  74 void __init at91_add_device_usbh(struct at91_usbh_data *data) {}
  75 #endif
  76
  77
  78 /* --------------------------------------------------------------------
  79  *  USB Device (Gadget)
  80  * -------------------------------------------------------------------- */
  81
  82 #ifdef CONFIG_USB_GADGET_AT91
  83 static struct at91_udc_data udc_data;
  84
  85 static struct resource udc_resources[] = {
  86         [0] = {
  87                 .start  = AT91SAM9261_BASE_UDP,
  88                 .end    = AT91SAM9261_BASE_UDP + SZ_16K - 1,
  89                 .flags  = IORESOURCE_MEM,
  90         },
  91         [1] = {
  92                 .start  = AT91SAM9261_ID_UDP,
  93                 .end    = AT91SAM9261_ID_UDP,
  94                 .flags  = IORESOURCE_IRQ,
  95         },
  96 };
  97
  98 static struct platform_device at91sam9261_udc_device = {
  99         .name           = "at91_udc",
 100         .id             = -1,
 101         .dev            = {
 102                                 .platform_data          = &udc_data,
 103         },
 104         .resource       = udc_resources,
 105         .num_resources  = ARRAY_SIZE(udc_resources),
 106 };
 107
 108 void __init at91_add_device_udc(struct at91_udc_data *data)
 109 {
 110         unsigned long x;
 111
 112         if (!data)
 113                 return;
 114
 115         if (data->vbus_pin) {
 116                 at91_set_gpio_input(data->vbus_pin, 0);
 117                 at91_set_deglitch(data->vbus_pin, 1);
 118         }
 119
 120         /* Pullup pin is handled internally */
 121         x = at91_sys_read(AT91_MATRIX_USBPUCR);
 122         at91_sys_write(AT91_MATRIX_USBPUCR, x | AT91_MATRIX_USBPUCR_PUON);
 123
 124         udc_data = *data;
 125         platform_device_register(&at91sam9261_udc_device);
 126 }
 127 #else
 128 void __init at91_add_device_udc(struct at91_udc_data *data) {}
 129 #endif
 130
 131 /* --------------------------------------------------------------------
 132  *  MMC / SD
 133  * -------------------------------------------------------------------- */
 134
 135 #if defined(CONFIG_MMC_AT91) || defined(CONFIG_MMC_AT91_MODULE)
 136 static u64 mmc_dmamask = DMA_BIT_MASK(32);
 137 static struct at91_mmc_data mmc_data;
 138
 139 static struct resource mmc_resources[] = {
 140         [0] = {
 141                 .start  = AT91SAM9261_BASE_MCI,
 142                 .end    = AT91SAM9261_BASE_MCI + SZ_16K - 1,
 143                 .flags  = IORESOURCE_MEM,
 144         },
 145         [1] = {
 146                 .start  = AT91SAM9261_ID_MCI,
 147                 .end    = AT91SAM9261_ID_MCI,
 148                 .flags  = IORESOURCE_IRQ,
 149         },
 150 };
 151
 152 static struct platform_device at91sam9261_mmc_device = {
 153         .name           = "at91_mci",
 154         .id             = -1,
 155         .dev            = {
 156                                 .dma_mask               = &mmc_dmamask,
 157                                 .coherent_dma_mask      = DMA_BIT_MASK(32),
 158                                 .platform_data          = &mmc_data,
 159         },
 160         .resource       = mmc_resources,
 161         .num_resources  = ARRAY_SIZE(mmc_resources),
 162 };
 163
 164 void __init at91_add_device_mmc(short mmc_id, struct at91_mmc_data *data)
 165 {
 166         if (!data)
 167                 return;
 168
 169         /* input/irq */
 170         if (data->det_pin) {
 171                 at91_set_gpio_input(data->det_pin, 1);
 172                 at91_set_deglitch(data->det_pin, 1);
 173         }
 174         if (data->wp_pin)
 175                 at91_set_gpio_input(data->wp_pin, 1);
 176         if (data->vcc_pin)
 177                 at91_set_gpio_output(data->vcc_pin, 0);
 178
 179         /* CLK */
 180         at91_set_B_periph(AT91_PIN_PA2, 0);
 181
 182         /* CMD */
 183         at91_set_B_periph(AT91_PIN_PA1, 1);
 184
 185         /* DAT0, maybe DAT1..DAT3 */
 186         at91_set_B_periph(AT91_PIN_PA0, 1);
 187         if (data->wire4) {
 188                 at91_set_B_periph(AT91_PIN_PA4, 1);
 189                 at91_set_B_periph(AT91_PIN_PA5, 1);
 190                 at91_set_B_periph(AT91_PIN_PA6, 1);
 191         }
 192
 193         mmc_data = *data;
 194         platform_device_register(&at91sam9261_mmc_device);
 195 }
 196 #else
 197 void __init at91_add_device_mmc(short mmc_id, struct at91_mmc_data *data) {}
 198 #endif
 199
 200
 201 /* --------------------------------------------------------------------
 202  *  NAND / SmartMedia
 203  * -------------------------------------------------------------------- */
 204
 205 #if defined(CONFIG_MTD_NAND_AT91) || defined(CONFIG_MTD_NAND_AT91_MODULE)
 206 static struct at91_nand_data nand_data;
 207
 208 #define NAND_BASE       AT91_CHIPSELECT_3
 209
 210 static struct resource nand_resources[] = {
 211         {
 212                 .start  = NAND_BASE,
 213                 .end    = NAND_BASE + SZ_256M - 1,
 214                 .flags  = IORESOURCE_MEM,
 215         }
 216 };
 217
 218 static struct platform_device at91_nand_device = {
 219         .name           = "at91_nand",
 220         .id             = -1,
 221         .dev            = {
 222                                 .platform_data  = &nand_data,
 223         },
 224         .resource       = nand_resources,
 225         .num_resources  = ARRAY_SIZE(nand_resources),
 226 };
 227
 228 void __init at91_add_device_nand(struct at91_nand_data *data)
 229 {
 230         unsigned long csa, mode;
 231
 232         if (!data)
 233                 return;
 234
 235         csa = at91_sys_read(AT91_MATRIX_EBICSA);
 236         at91_sys_write(AT91_MATRIX_EBICSA, csa | AT91_MATRIX_CS3A_SMC);
 237
 238         /* set the bus interface characteristics */
 239         at91_sys_write(AT91_SMC_SETUP(3), AT91_SMC_NWESETUP_(0) | AT91_SMC_NCS_WRSETUP_(0)
 240                         | AT91_SMC_NRDSETUP_(0) | AT91_SMC_NCS_RDSETUP_(0));
 241
 242         at91_sys_write(AT91_SMC_PULSE(3), AT91_SMC_NWEPULSE_(2) | AT91_SMC_NCS_WRPULSE_(5)
 243                         | AT91_SMC_NRDPULSE_(2) | AT91_SMC_NCS_RDPULSE_(5));
 244
 245         at91_sys_write(AT91_SMC_CYCLE(3), AT91_SMC_NWECYCLE_(7) | AT91_SMC_NRDCYCLE_(7));
 246
 247         if (data->bus_width_16)
 248                 mode = AT91_SMC_DBW_16;
 249         else
 250                 mode = AT91_SMC_DBW_8;
 251         at91_sys_write(AT91_SMC_MODE(3), mode | AT91_SMC_READMODE | AT91_SMC_WRITEMODE | AT91_SMC_EXNWMODE_DISABLE | AT91_SMC_TDF_(1));
 252
 253         /* enable pin */
 254         if (data->enable_pin)
 255                 at91_set_gpio_output(data->enable_pin, 1);
 256
 257         /* ready/busy pin */
 258         if (data->rdy_pin)
 259                 at91_set_gpio_input(data->rdy_pin, 1);
 260
 261         /* card detect pin */
 262         if (data->det_pin)
 263                 at91_set_gpio_input(data->det_pin, 1);
 264
 265         at91_set_A_periph(AT91_PIN_PC0, 0);             /* NANDOE */
 266         at91_set_A_periph(AT91_PIN_PC1, 0);             /* NANDWE */
 267
 268         nand_data = *data;
 269         platform_device_register(&at91_nand_device);
 270 }
 271
 272 #else
 273 void __init at91_add_device_nand(struct at91_nand_data *data) {}
 274 #endif
 275
 276
 277 /* --------------------------------------------------------------------
 278  *  TWI (i2c)
 279  * -------------------------------------------------------------------- */
 280
 281 /*
 282  * Prefer the GPIO code since the TWI controller isn't robust
 283  * (gets overruns and underruns under load) and can only issue
 284  * repeated STARTs in one scenario (the driver doesn't yet handle them).
 285  */
 286 #if defined(CONFIG_I2C_GPIO) || defined(CONFIG_I2C_GPIO_MODULE)
 287
 288 static struct i2c_gpio_platform_data pdata = {
 289         .sda_pin                = AT91_PIN_PA7,
 290         .sda_is_open_drain      = 1,
 291         .scl_pin                = AT91_PIN_PA8,
 292         .scl_is_open_drain      = 1,
 293         .udelay                 = 2,            /* ~100 kHz */
 294 };
 295
 296 static struct platform_device at91sam9261_twi_device = {
 297         .name                   = "i2c-gpio",
 298         .id                     = -1,
 299         .dev.platform_data      = &pdata,
 300 };
 301
 302 void __init at91_add_device_i2c(struct i2c_board_info *devices, int nr_devices)
 303 {
 304         at91_set_GPIO_periph(AT91_PIN_PA7, 1);          /* TWD (SDA) */
 305         at91_set_multi_drive(AT91_PIN_PA7, 1);
 306
 307         at91_set_GPIO_periph(AT91_PIN_PA8, 1);          /* TWCK (SCL) */
 308         at91_set_multi_drive(AT91_PIN_PA8, 1);
 309
 310         i2c_register_board_info(0, devices, nr_devices);
 311         platform_device_register(&at91sam9261_twi_device);
 312 }
 313
 314 #elif defined(CONFIG_I2C_AT91) || defined(CONFIG_I2C_AT91_MODULE)
 315
 316 static struct resource twi_resources[] = {
 317         [0] = {
 318                 .start  = AT91SAM9261_BASE_TWI,
 319                 .end    = AT91SAM9261_BASE_TWI + SZ_16K - 1,
 320                 .flags  = IORESOURCE_MEM,
 321         },
 322         [1] = {
 323                 .start  = AT91SAM9261_ID_TWI,
 324                 .end    = AT91SAM9261_ID_TWI,
 325                 .flags  = IORESOURCE_IRQ,
 326         },
 327 };
 328
 329 static struct platform_device at91sam9261_twi_device = {
 330         .name           = "at91_i2c",
 331         .id             = -1,
 332         .resource       = twi_resources,
 333         .num_resources  = ARRAY_SIZE(twi_resources),
 334 };
 335
 336 void __init at91_add_device_i2c(struct i2c_board_info *devices, int nr_devices)
 337 {
 338         /* pins used for TWI interface */
 339         at91_set_A_periph(AT91_PIN_PA7, 0);             /* TWD */
 340         at91_set_multi_drive(AT91_PIN_PA7, 1);
 341
 342         at91_set_A_periph(AT91_PIN_PA8, 0);             /* TWCK */
 343         at91_set_multi_drive(AT91_PIN_PA8, 1);
 344
 345         i2c_register_board_info(0, devices, nr_devices);
 346         platform_device_register(&at91sam9261_twi_device);
 347 }
 348 #else
 349 void __init at91_add_device_i2c(struct i2c_board_info *devices, int nr_devices) {}
 350 #endif
 351
 352
 353 /* --------------------------------------------------------------------
 354  *  SPI
 355  * -------------------------------------------------------------------- */
 356
 357 #if defined(CONFIG_SPI_ATMEL) || defined(CONFIG_SPI_ATMEL_MODULE)
 358 static u64 spi_dmamask = DMA_BIT_MASK(32);
 359
 360 static struct resource spi0_resources[] = {
 361         [0] = {
 362                 .start  = AT91SAM9261_BASE_SPI0,
 363                 .end    = AT91SAM9261_BASE_SPI0 + SZ_16K - 1,
 364                 .flags  = IORESOURCE_MEM,
 365         },
 366         [1] = {
 367                 .start  = AT91SAM9261_ID_SPI0,
 368                 .end    = AT91SAM9261_ID_SPI0,
 369                 .flags  = IORESOURCE_IRQ,
 370         },
 371 };
 372
 373 static struct platform_device at91sam9261_spi0_device = {
 374         .name           = "atmel_spi",
 375         .id             = 0,
 376         .dev            = {
 377                                 .dma_mask               = &spi_dmamask,
 378                                 .coherent_dma_mask      = DMA_BIT_MASK(32),
 379         },
 380         .resource       = spi0_resources,
 381         .num_resources  = ARRAY_SIZE(spi0_resources),
 382 };
 383
 384 static const unsigned spi0_standard_cs[4] = { AT91_PIN_PA3, AT91_PIN_PA4, AT91_PIN_PA5, AT91_PIN_PA6 };
 385
 386 static struct resource spi1_resources[] = {
 387         [0] = {
 388                 .start  = AT91SAM9261_BASE_SPI1,
 389                 .end    = AT91SAM9261_BASE_SPI1 + SZ_16K - 1,
 390                 .flags  = IORESOURCE_MEM,
 391         },
 392         [1] = {
 393                 .start  = AT91SAM9261_ID_SPI1,
 394                 .end    = AT91SAM9261_ID_SPI1,
 395                 .flags  = IORESOURCE_IRQ,
 396         },
 397 };
 398
 399 static struct platform_device at91sam9261_spi1_device = {
 400         .name           = "atmel_spi",
 401         .id             = 1,
 402         .dev            = {
 403                                 .dma_mask               = &spi_dmamask,
 404                                 .coherent_dma_mask      = DMA_BIT_MASK(32),
 405         },
 406         .resource       = spi1_resources,
 407         .num_resources  = ARRAY_SIZE(spi1_resources),
 408 };
 409
 410 static const unsigned spi1_standard_cs[4] = { AT91_PIN_PB28, AT91_PIN_PA24, AT91_PIN_PA25, AT91_PIN_PA26 };
 411
 412 void __init at91_add_device_spi(struct spi_board_info *devices, int nr_devices)
 413 {
 414         int i;
 415         unsigned long cs_pin;
 416         short enable_spi0 = 0;
 417         short enable_spi1 = 0;
 418
 419         /* Choose SPI chip-selects */
 420         for (i = 0; i < nr_devices; i++) {
 421                 if (devices[i].controller_data)
 422                         cs_pin = (unsigned long) devices[i].controller_data;
 423                 else if (devices[i].bus_num == 0)
 424                         cs_pin = spi0_standard_cs[devices[i].chip_select];
 425                 else
 426                         cs_pin = spi1_standard_cs[devices[i].chip_select];
 427
 428                 if (devices[i].bus_num == 0)
 429                         enable_spi0 = 1;
 430                 else
 431                         enable_spi1 = 1;
 432
 433                 /* enable chip-select pin */
 434                 at91_set_gpio_output(cs_pin, 1);
 435
 436                 /* pass chip-select pin to driver */
 437                 devices[i].controller_data = (void *) cs_pin;
 438         }
 439
 440         spi_register_board_info(devices, nr_devices);
 441
 442         /* Configure SPI bus(es) */
 443         if (enable_spi0) {
 444                 at91_set_A_periph(AT91_PIN_PA0, 0);     /* SPI0_MISO */
 445                 at91_set_A_periph(AT91_PIN_PA1, 0);     /* SPI0_MOSI */
 446                 at91_set_A_periph(AT91_PIN_PA2, 0);     /* SPI0_SPCK */
 447
 448                 at91_clock_associate("spi0_clk", &at91sam9261_spi0_device.dev, "spi_clk");
 449                 platform_device_register(&at91sam9261_spi0_device);
 450         }
 451         if (enable_spi1) {
 452                 at91_set_A_periph(AT91_PIN_PB30, 0);    /* SPI1_MISO */
 453                 at91_set_A_periph(AT91_PIN_PB31, 0);    /* SPI1_MOSI */
 454                 at91_set_A_periph(AT91_PIN_PB29, 0);    /* SPI1_SPCK */
 455
 456                 at91_clock_associate("spi1_clk", &at91sam9261_spi1_device.dev, "spi_clk");
 457                 platform_device_register(&at91sam9261_spi1_device);
 458         }
 459 }
 460 #else
 461 void __init at91_add_device_spi(struct spi_board_info *devices, int nr_devices) {}
 462 #endif
 463
 464
 465 /* --------------------------------------------------------------------
 466  *  LCD Controller
 467  * -------------------------------------------------------------------- */
 468
 469 #if defined(CONFIG_FB_ATMEL) || defined(CONFIG_FB_ATMEL_MODULE)
 470 static u64 lcdc_dmamask = DMA_BIT_MASK(32);
 471 static struct atmel_lcdfb_info lcdc_data;
 472
 473 static struct resource lcdc_resources[] = {
 474         [0] = {
 475                 .start  = AT91SAM9261_LCDC_BASE,
 476                 .end    = AT91SAM9261_LCDC_BASE + SZ_4K - 1,
 477                 .flags  = IORESOURCE_MEM,
 478         },
 479         [1] = {
 480                 .start  = AT91SAM9261_ID_LCDC,
 481                 .end    = AT91SAM9261_ID_LCDC,
 482                 .flags  = IORESOURCE_IRQ,
 483         },
 484 #if defined(CONFIG_FB_INTSRAM)
 485         [2] = {
 486                 .start  = AT91SAM9261_SRAM_BASE,
 487                 .end    = AT91SAM9261_SRAM_BASE + AT91SAM9261_SRAM_SIZE - 1,
 488                 .flags  = IORESOURCE_MEM,
 489         },
 490 #endif
 491 };
 492
 493 static struct platform_device at91_lcdc_device = {
 494         .name           = "atmel_lcdfb",
 495         .id             = 0,
 496         .dev            = {
 497                                 .dma_mask               = &lcdc_dmamask,
 498                                 .coherent_dma_mask      = DMA_BIT_MASK(32),
 499                                 .platform_data          = &lcdc_data,
 500         },
 501         .resource       = lcdc_resources,
 502         .num_resources  = ARRAY_SIZE(lcdc_resources),
 503 };
 504
 505 void __init at91_add_device_lcdc(struct atmel_lcdfb_info *data)
 506 {
 507         if (!data) {
 508                 return;
 509         }
 510
 511 #if defined(CONFIG_FB_ATMEL_STN)
 512         at91_set_A_periph(AT91_PIN_PB0, 0);     /* LCDVSYNC */
 513         at91_set_A_periph(AT91_PIN_PB1, 0);     /* LCDHSYNC */
 514         at91_set_A_periph(AT91_PIN_PB2, 0);     /* LCDDOTCK */
 515         at91_set_A_periph(AT91_PIN_PB3, 0);     /* LCDDEN */
 516         at91_set_A_periph(AT91_PIN_PB4, 0);     /* LCDCC */
 517         at91_set_A_periph(AT91_PIN_PB5, 0);     /* LCDD0 */
 518         at91_set_A_periph(AT91_PIN_PB6, 0);     /* LCDD1 */
 519         at91_set_A_periph(AT91_PIN_PB7, 0);     /* LCDD2 */
 520         at91_set_A_periph(AT91_PIN_PB8, 0);     /* LCDD3 */
 521 #else
 522         at91_set_A_periph(AT91_PIN_PB1, 0);     /* LCDHSYNC */
 523         at91_set_A_periph(AT91_PIN_PB2, 0);     /* LCDDOTCK */
 524         at91_set_A_periph(AT91_PIN_PB3, 0);     /* LCDDEN */
 525         at91_set_A_periph(AT91_PIN_PB4, 0);     /* LCDCC */
 526         at91_set_A_periph(AT91_PIN_PB7, 0);     /* LCDD2 */
 527         at91_set_A_periph(AT91_PIN_PB8, 0);     /* LCDD3 */
 528         at91_set_A_periph(AT91_PIN_PB9, 0);     /* LCDD4 */
 529         at91_set_A_periph(AT91_PIN_PB10, 0);    /* LCDD5 */
 530         at91_set_A_periph(AT91_PIN_PB11, 0);    /* LCDD6 */
 531         at91_set_A_periph(AT91_PIN_PB12, 0);    /* LCDD7 */
 532         at91_set_A_periph(AT91_PIN_PB15, 0);    /* LCDD10 */
 533         at91_set_A_periph(AT91_PIN_PB16, 0);    /* LCDD11 */
 534         at91_set_A_periph(AT91_PIN_PB17, 0);    /* LCDD12 */
 535         at91_set_A_periph(AT91_PIN_PB18, 0);    /* LCDD13 */
 536         at91_set_A_periph(AT91_PIN_PB19, 0);    /* LCDD14 */
 537         at91_set_A_periph(AT91_PIN_PB20, 0);    /* LCDD15 */
 538         at91_set_B_periph(AT91_PIN_PB23, 0);    /* LCDD18 */
 539         at91_set_B_periph(AT91_PIN_PB24, 0);    /* LCDD19 */
 540         at91_set_B_periph(AT91_PIN_PB25, 0);    /* LCDD20 */
 541         at91_set_B_periph(AT91_PIN_PB26, 0);    /* LCDD21 */
 542         at91_set_B_periph(AT91_PIN_PB27, 0);    /* LCDD22 */
 543         at91_set_B_periph(AT91_PIN_PB28, 0);    /* LCDD23 */
 544 #endif
 545
 546         lcdc_data = *data;
 547         platform_device_register(&at91_lcdc_device);
 548 }
 549 #else
 550 void __init at91_add_device_lcdc(struct atmel_lcdfb_info *data) {}
 551 #endif
 552
 553
 554 /* --------------------------------------------------------------------
 555  *  RTT
 556  * -------------------------------------------------------------------- */
 557
 558 static struct resource rtt_resources[] = {
 559         {
 560                 .start  = AT91_BASE_SYS + AT91_RTT,
 561                 .end    = AT91_BASE_SYS + AT91_RTT + SZ_16 - 1,
 562                 .flags  = IORESOURCE_MEM,
 563         }
 564 };
 565
 566 static struct platform_device at91sam9261_rtt_device = {
 567         .name           = "at91_rtt",
 568         .id             = -1,
 569         .resource       = rtt_resources,
 570         .num_resources  = ARRAY_SIZE(rtt_resources),
 571 };
 572
 573 static void __init at91_add_device_rtt(void)
 574 {
 575         platform_device_register(&at91sam9261_rtt_device);
 576 }
 577
 578
 579 /* --------------------------------------------------------------------
 580  *  Watchdog
 581  * -------------------------------------------------------------------- */
 582
 583 #if defined(CONFIG_AT91SAM9_WATCHDOG) || defined(CONFIG_AT91SAM9_WATCHDOG_MODULE)
 584 static struct platform_device at91sam9261_wdt_device = {
 585         .name           = "at91_wdt",
 586         .id             = -1,
 587         .num_resources  = 0,
 588 };
 589
 590 static void __init at91_add_device_watchdog(void)
 591 {
 592         platform_device_register(&at91sam9261_wdt_device);
 593 }
 594 #else
 595 static void __init at91_add_device_watchdog(void) {}
 596 #endif
 597
 598
 599 /* --------------------------------------------------------------------
 600  *  LEDs
 601  * -------------------------------------------------------------------- */
 602
 603 #if defined(CONFIG_LEDS)
 604 u8 at91_leds_cpu;
 605 u8 at91_leds_timer;
 606
 607 void __init at91_init_leds(u8 cpu_led, u8 timer_led)
 608 {
 609         /* Enable GPIO to access the LEDs */
 610         at91_set_gpio_output(cpu_led, 1);
 611         at91_set_gpio_output(timer_led, 1);
 612
 613         at91_leds_cpu   = cpu_led;
 614         at91_leds_timer = timer_led;
 615 }
 616 #else
 617 void __init at91_init_leds(u8 cpu_led, u8 timer_led) {}
 618 #endif
 619
 620
 621 /* --------------------------------------------------------------------
 622  *  UART
 623  * -------------------------------------------------------------------- */
 624
 625 #if defined(CONFIG_SERIAL_ATMEL)
 626 static struct resource dbgu_resources[] = {
 627         [0] = {
 628                 .start  = AT91_VA_BASE_SYS + AT91_DBGU,
 629                 .end    = AT91_VA_BASE_SYS + AT91_DBGU + SZ_512 - 1,
 630                 .flags  = IORESOURCE_MEM,
 631         },
 632         [1] = {
 633                 .start  = AT91_ID_SYS,
 634                 .end    = AT91_ID_SYS,
 635                 .flags  = IORESOURCE_IRQ,
 636         },
 637 };
 638
 639 static struct atmel_uart_data dbgu_data = {
 640         .use_dma_tx     = 0,
 641         .use_dma_rx     = 0,            /* DBGU not capable of receive DMA */
 642         .regs           = (void __iomem *)(AT91_VA_BASE_SYS + AT91_DBGU),
 643 };
 644
 645 static u64 dbgu_dmamask = DMA_BIT_MASK(32);
 646
 647 static struct platform_device at91sam9261_dbgu_device = {
 648         .name           = "atmel_usart",
 649         .id             = 0,
 650         .dev            = {
 651                                 .dma_mask               = &dbgu_dmamask,
 652                                 .coherent_dma_mask      = DMA_BIT_MASK(32),
 653                                 .platform_data          = &dbgu_data,
 654         },
 655         .resource       = dbgu_resources,
 656         .num_resources  = ARRAY_SIZE(dbgu_resources),
 657 };
 658
 659 static inline void configure_dbgu_pins(void)
 660 {
 661         at91_set_A_periph(AT91_PIN_PA9, 0);             /* DRXD */
 662         at91_set_A_periph(AT91_PIN_PA10, 1);            /* DTXD */
 663 }
 664
 665 static struct resource uart0_resources[] = {
 666         [0] = {
 667                 .start  = AT91SAM9261_BASE_US0,
 668                 .end    = AT91SAM9261_BASE_US0 + SZ_16K - 1,
 669                 .flags  = IORESOURCE_MEM,
 670         },
 671         [1] = {
 672                 .start  = AT91SAM9261_ID_US0,
 673                 .end    = AT91SAM9261_ID_US0,
 674                 .flags  = IORESOURCE_IRQ,
 675         },
 676 };
 677
 678 static struct atmel_uart_data uart0_data = {
 679         .use_dma_tx     = 1,
 680         .use_dma_rx     = 1,
 681 };
 682
 683 static u64 uart0_dmamask = DMA_BIT_MASK(32);
 684
 685 static struct platform_device at91sam9261_uart0_device = {
 686         .name           = "atmel_usart",
 687         .id             = 1,
 688         .dev            = {
 689                                 .dma_mask               = &uart0_dmamask,
 690                                 .coherent_dma_mask      = DMA_BIT_MASK(32),
 691                                 .platform_data          = &uart0_data,
 692         },
 693         .resource       = uart0_resources,
 694         .num_resources  = ARRAY_SIZE(uart0_resources),
 695 };
 696
 697 static inline void configure_usart0_pins(void)
 698 {
 699         at91_set_A_periph(AT91_PIN_PC8, 1);             /* TXD0 */
 700         at91_set_A_periph(AT91_PIN_PC9, 0);             /* RXD0 */
 701         at91_set_A_periph(AT91_PIN_PC10, 0);            /* RTS0 */
 702         at91_set_A_periph(AT91_PIN_PC11, 0);            /* CTS0 */
 703 }
 704
 705 static struct resource uart1_resources[] = {
 706         [0] = {
 707                 .start  = AT91SAM9261_BASE_US1,
 708                 .end    = AT91SAM9261_BASE_US1 + SZ_16K - 1,
 709                 .flags  = IORESOURCE_MEM,
 710         },
 711         [1] = {
 712                 .start  = AT91SAM9261_ID_US1,
 713                 .end    = AT91SAM9261_ID_US1,
 714                 .flags  = IORESOURCE_IRQ,
 715         },
 716 };
 717
 718 static struct atmel_uart_data uart1_data = {
 719         .use_dma_tx     = 1,
 720         .use_dma_rx     = 1,
 721 };
 722
 723 static u64 uart1_dmamask = DMA_BIT_MASK(32);
 724
 725 static struct platform_device at91sam9261_uart1_device = {
 726         .name           = "atmel_usart",
 727         .id             = 2,
 728         .dev            = {
 729                                 .dma_mask               = &uart1_dmamask,
 730                                 .coherent_dma_mask      = DMA_BIT_MASK(32),
 731                                 .platform_data          = &uart1_data,
 732         },
 733         .resource       = uart1_resources,
 734         .num_resources  = ARRAY_SIZE(uart1_resources),
 735 };
 736
 737 static inline void configure_usart1_pins(void)
 738 {
 739         at91_set_A_periph(AT91_PIN_PC12, 1);            /* TXD1 */
 740         at91_set_A_periph(AT91_PIN_PC13, 0);            /* RXD1 */
 741 }
 742
 743 static struct resource uart2_resources[] = {
 744         [0] = {
 745                 .start  = AT91SAM9261_BASE_US2,
 746                 .end    = AT91SAM9261_BASE_US2 + SZ_16K - 1,
 747                 .flags  = IORESOURCE_MEM,
 748         },
 749         [1] = {
 750                 .start  = AT91SAM9261_ID_US2,
 751                 .end    = AT91SAM9261_ID_US2,
 752                 .flags  = IORESOURCE_IRQ,
 753         },
 754 };
 755
 756 static struct atmel_uart_data uart2_data = {
 757         .use_dma_tx     = 1,
 758         .use_dma_rx     = 1,
 759 };
 760
 761 static u64 uart2_dmamask = DMA_BIT_MASK(32);
 762
 763 static struct platform_device at91sam9261_uart2_device = {
 764         .name           = "atmel_usart",
 765         .id             = 3,
 766         .dev            = {
 767                                 .dma_mask               = &uart2_dmamask,
 768                                 .coherent_dma_mask      = DMA_BIT_MASK(32),
 769                                 .platform_data          = &uart2_data,
 770         },
 771         .resource       = uart2_resources,
 772         .num_resources  = ARRAY_SIZE(uart2_resources),
 773 };
 774
 775 static inline void configure_usart2_pins(void)
 776 {
 777         at91_set_A_periph(AT91_PIN_PC15, 0);            /* RXD2 */
 778         at91_set_A_periph(AT91_PIN_PC14, 1);            /* TXD2 */
 779 }
 780
 781 static struct platform_device *at91_uarts[ATMEL_MAX_UART];      /* the UARTs to use */
 782 struct platform_device *atmel_default_console_device;   /* the serial console device */
 783
 784 void __init at91_init_serial(struct at91_uart_config *config)
 785 {
 786         int i;
 787
 788         /* Fill in list of supported UARTs */
 789         for (i = 0; i < config->nr_tty; i++) {
 790                 switch (config->tty_map[i]) {
 791                         case 0:
 792                                 configure_usart0_pins();
 793                                 at91_uarts[i] = &at91sam9261_uart0_device;
 794                                 at91_clock_associate("usart0_clk", &at91sam9261_uart0_device.dev, "usart");
 795                                 break;
 796                         case 1:
 797                                 configure_usart1_pins();
 798                                 at91_uarts[i] = &at91sam9261_uart1_device;
 799                                 at91_clock_associate("usart1_clk", &at91sam9261_uart1_device.dev, "usart");
 800                                 break;
 801                         case 2:
 802                                 configure_usart2_pins();
 803                                 at91_uarts[i] = &at91sam9261_uart2_device;
 804                                 at91_clock_associate("usart2_clk", &at91sam9261_uart2_device.dev, "usart");
 805                                 break;
 806                         case 3:
 807                                 configure_dbgu_pins();
 808                                 at91_uarts[i] = &at91sam9261_dbgu_device;
 809                                 at91_clock_associate("mck", &at91sam9261_dbgu_device.dev, "usart");
 810                                 break;
 811                         default:
 812                                 continue;
 813                 }
 814                 at91_uarts[i]->id = i;          /* update ID number to mapped ID */
 815         }
 816
 817         /* Set serial console device */
 818         if (config->console_tty < ATMEL_MAX_UART)
 819                 atmel_default_console_device = at91_uarts[config->console_tty];
 820         if (!atmel_default_console_device)
 821                 printk(KERN_INFO "AT91: No default serial console defined.\n");
 822 }
 823
 824 void __init at91_add_device_serial(void)
 825 {
 826         int i;
 827
 828         for (i = 0; i < ATMEL_MAX_UART; i++) {
 829                 if (at91_uarts[i])
 830                         platform_device_register(at91_uarts[i]);
 831         }
 832 }
 833 #else
 834 void __init at91_init_serial(struct at91_uart_config *config) {}
 835 void __init at91_add_device_serial(void) {}
 836 #endif
 837
 838
 839 /* -------------------------------------------------------------------- */
 840
 841 /*
 842  * These devices are always present and don't need any board-specific
 843  * setup.
 844  */
 845 static int __init at91_add_standard_devices(void)
 846 {
 847         at91_add_device_rtt();
 848         at91_add_device_watchdog();
 849         return 0;
 850 }
 851
 852 arch_initcall(at91_add_standard_devices);