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_SMARTMEDIA);
 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  *  SSC -- Synchronous Serial Controller
 601  * -------------------------------------------------------------------- */
 602
 603 #if defined(CONFIG_ATMEL_SSC) || defined(CONFIG_ATMEL_SSC_MODULE)
 604 static u64 ssc0_dmamask = DMA_BIT_MASK(32);
 605
 606 static struct resource ssc0_resources[] = {
 607         [0] = {
 608                 .start  = AT91SAM9261_BASE_SSC0,
 609                 .end    = AT91SAM9261_BASE_SSC0 + SZ_16K - 1,
 610                 .flags  = IORESOURCE_MEM,
 611         },
 612         [1] = {
 613                 .start  = AT91SAM9261_ID_SSC0,
 614                 .end    = AT91SAM9261_ID_SSC0,
 615                 .flags  = IORESOURCE_IRQ,
 616         },
 617 };
 618
 619 static struct platform_device at91sam9261_ssc0_device = {
 620         .name   = "ssc",
 621         .id     = 0,
 622         .dev    = {
 623                 .dma_mask               = &ssc0_dmamask,
 624                 .coherent_dma_mask      = DMA_BIT_MASK(32),
 625         },
 626         .resource       = ssc0_resources,
 627         .num_resources  = ARRAY_SIZE(ssc0_resources),
 628 };
 629
 630 static inline void configure_ssc0_pins(unsigned pins)
 631 {
 632         if (pins & ATMEL_SSC_TF)
 633                 at91_set_A_periph(AT91_PIN_PB21, 1);
 634         if (pins & ATMEL_SSC_TK)
 635                 at91_set_A_periph(AT91_PIN_PB22, 1);
 636         if (pins & ATMEL_SSC_TD)
 637                 at91_set_A_periph(AT91_PIN_PB23, 1);
 638         if (pins & ATMEL_SSC_RD)
 639                 at91_set_A_periph(AT91_PIN_PB24, 1);
 640         if (pins & ATMEL_SSC_RK)
 641                 at91_set_A_periph(AT91_PIN_PB25, 1);
 642         if (pins & ATMEL_SSC_RF)
 643                 at91_set_A_periph(AT91_PIN_PB26, 1);
 644 }
 645
 646 static u64 ssc1_dmamask = DMA_BIT_MASK(32);
 647
 648 static struct resource ssc1_resources[] = {
 649         [0] = {
 650                 .start  = AT91SAM9261_BASE_SSC1,
 651                 .end    = AT91SAM9261_BASE_SSC1 + SZ_16K - 1,
 652                 .flags  = IORESOURCE_MEM,
 653         },
 654         [1] = {
 655                 .start  = AT91SAM9261_ID_SSC1,
 656                 .end    = AT91SAM9261_ID_SSC1,
 657                 .flags  = IORESOURCE_IRQ,
 658         },
 659 };
 660
 661 static struct platform_device at91sam9261_ssc1_device = {
 662         .name   = "ssc",
 663         .id     = 1,
 664         .dev    = {
 665                 .dma_mask               = &ssc1_dmamask,
 666                 .coherent_dma_mask      = DMA_BIT_MASK(32),
 667         },
 668         .resource       = ssc1_resources,
 669         .num_resources  = ARRAY_SIZE(ssc1_resources),
 670 };
 671
 672 static inline void configure_ssc1_pins(unsigned pins)
 673 {
 674         if (pins & ATMEL_SSC_TF)
 675                 at91_set_B_periph(AT91_PIN_PA17, 1);
 676         if (pins & ATMEL_SSC_TK)
 677                 at91_set_B_periph(AT91_PIN_PA18, 1);
 678         if (pins & ATMEL_SSC_TD)
 679                 at91_set_B_periph(AT91_PIN_PA19, 1);
 680         if (pins & ATMEL_SSC_RD)
 681                 at91_set_B_periph(AT91_PIN_PA20, 1);
 682         if (pins & ATMEL_SSC_RK)
 683                 at91_set_B_periph(AT91_PIN_PA21, 1);
 684         if (pins & ATMEL_SSC_RF)
 685                 at91_set_B_periph(AT91_PIN_PA22, 1);
 686 }
 687
 688 static u64 ssc2_dmamask = DMA_BIT_MASK(32);
 689
 690 static struct resource ssc2_resources[] = {
 691         [0] = {
 692                 .start  = AT91SAM9261_BASE_SSC2,
 693                 .end    = AT91SAM9261_BASE_SSC2 + SZ_16K - 1,
 694                 .flags  = IORESOURCE_MEM,
 695         },
 696         [1] = {
 697                 .start  = AT91SAM9261_ID_SSC2,
 698                 .end    = AT91SAM9261_ID_SSC2,
 699                 .flags  = IORESOURCE_IRQ,
 700         },
 701 };
 702
 703 static struct platform_device at91sam9261_ssc2_device = {
 704         .name   = "ssc",
 705         .id     = 2,
 706         .dev    = {
 707                 .dma_mask               = &ssc2_dmamask,
 708                 .coherent_dma_mask      = DMA_BIT_MASK(32),
 709         },
 710         .resource       = ssc2_resources,
 711         .num_resources  = ARRAY_SIZE(ssc2_resources),
 712 };
 713
 714 static inline void configure_ssc2_pins(unsigned pins)
 715 {
 716         if (pins & ATMEL_SSC_TF)
 717                 at91_set_B_periph(AT91_PIN_PC25, 1);
 718         if (pins & ATMEL_SSC_TK)
 719                 at91_set_B_periph(AT91_PIN_PC26, 1);
 720         if (pins & ATMEL_SSC_TD)
 721                 at91_set_B_periph(AT91_PIN_PC27, 1);
 722         if (pins & ATMEL_SSC_RD)
 723                 at91_set_B_periph(AT91_PIN_PC28, 1);
 724         if (pins & ATMEL_SSC_RK)
 725                 at91_set_B_periph(AT91_PIN_PC29, 1);
 726         if (pins & ATMEL_SSC_RF)
 727                 at91_set_B_periph(AT91_PIN_PC30, 1);
 728 }
 729
 730 /*
 731  * SSC controllers are accessed through library code, instead of any
 732  * kind of all-singing/all-dancing driver.  For example one could be
 733  * used by a particular I2S audio codec's driver, while another one
 734  * on the same system might be used by a custom data capture driver.
 735  */
 736 void __init at91_add_device_ssc(unsigned id, unsigned pins)
 737 {
 738         struct platform_device *pdev;
 739
 740         /*
 741          * NOTE: caller is responsible for passing information matching
 742          * "pins" to whatever will be using each particular controller.
 743          */
 744         switch (id) {
 745         case AT91SAM9261_ID_SSC0:
 746                 pdev = &at91sam9261_ssc0_device;
 747                 configure_ssc0_pins(pins);
 748                 at91_clock_associate("ssc0_clk", &pdev->dev, "pclk");
 749                 break;
 750         case AT91SAM9261_ID_SSC1:
 751                 pdev = &at91sam9261_ssc1_device;
 752                 configure_ssc1_pins(pins);
 753                 at91_clock_associate("ssc1_clk", &pdev->dev, "pclk");
 754                 break;
 755         case AT91SAM9261_ID_SSC2:
 756                 pdev = &at91sam9261_ssc2_device;
 757                 configure_ssc2_pins(pins);
 758                 at91_clock_associate("ssc2_clk", &pdev->dev, "pclk");
 759                 break;
 760         default:
 761                 return;
 762         }
 763
 764         platform_device_register(pdev);
 765 }
 766
 767 #else
 768 void __init at91_add_device_ssc(unsigned id, unsigned pins) {}
 769 #endif
 770
 771
 772 /* --------------------------------------------------------------------
 773  *  UART
 774  * -------------------------------------------------------------------- */
 775
 776 #if defined(CONFIG_SERIAL_ATMEL)
 777 static struct resource dbgu_resources[] = {
 778         [0] = {
 779                 .start  = AT91_VA_BASE_SYS + AT91_DBGU,
 780                 .end    = AT91_VA_BASE_SYS + AT91_DBGU + SZ_512 - 1,
 781                 .flags  = IORESOURCE_MEM,
 782         },
 783         [1] = {
 784                 .start  = AT91_ID_SYS,
 785                 .end    = AT91_ID_SYS,
 786                 .flags  = IORESOURCE_IRQ,
 787         },
 788 };
 789
 790 static struct atmel_uart_data dbgu_data = {
 791         .use_dma_tx     = 0,
 792         .use_dma_rx     = 0,            /* DBGU not capable of receive DMA */
 793         .regs           = (void __iomem *)(AT91_VA_BASE_SYS + AT91_DBGU),
 794 };
 795
 796 static u64 dbgu_dmamask = DMA_BIT_MASK(32);
 797
 798 static struct platform_device at91sam9261_dbgu_device = {
 799         .name           = "atmel_usart",
 800         .id             = 0,
 801         .dev            = {
 802                                 .dma_mask               = &dbgu_dmamask,
 803                                 .coherent_dma_mask      = DMA_BIT_MASK(32),
 804                                 .platform_data          = &dbgu_data,
 805         },
 806         .resource       = dbgu_resources,
 807         .num_resources  = ARRAY_SIZE(dbgu_resources),
 808 };
 809
 810 static inline void configure_dbgu_pins(void)
 811 {
 812         at91_set_A_periph(AT91_PIN_PA9, 0);             /* DRXD */
 813         at91_set_A_periph(AT91_PIN_PA10, 1);            /* DTXD */
 814 }
 815
 816 static struct resource uart0_resources[] = {
 817         [0] = {
 818                 .start  = AT91SAM9261_BASE_US0,
 819                 .end    = AT91SAM9261_BASE_US0 + SZ_16K - 1,
 820                 .flags  = IORESOURCE_MEM,
 821         },
 822         [1] = {
 823                 .start  = AT91SAM9261_ID_US0,
 824                 .end    = AT91SAM9261_ID_US0,
 825                 .flags  = IORESOURCE_IRQ,
 826         },
 827 };
 828
 829 static struct atmel_uart_data uart0_data = {
 830         .use_dma_tx     = 1,
 831         .use_dma_rx     = 1,
 832 };
 833
 834 static u64 uart0_dmamask = DMA_BIT_MASK(32);
 835
 836 static struct platform_device at91sam9261_uart0_device = {
 837         .name           = "atmel_usart",
 838         .id             = 1,
 839         .dev            = {
 840                                 .dma_mask               = &uart0_dmamask,
 841                                 .coherent_dma_mask      = DMA_BIT_MASK(32),
 842                                 .platform_data          = &uart0_data,
 843         },
 844         .resource       = uart0_resources,
 845         .num_resources  = ARRAY_SIZE(uart0_resources),
 846 };
 847
 848 static inline void configure_usart0_pins(unsigned pins)
 849 {
 850         at91_set_A_periph(AT91_PIN_PC8, 1);             /* TXD0 */
 851         at91_set_A_periph(AT91_PIN_PC9, 0);             /* RXD0 */
 852
 853         if (pins & ATMEL_UART_RTS)
 854                 at91_set_A_periph(AT91_PIN_PC10, 0);    /* RTS0 */
 855         if (pins & ATMEL_UART_CTS)
 856                 at91_set_A_periph(AT91_PIN_PC11, 0);    /* CTS0 */
 857 }
 858
 859 static struct resource uart1_resources[] = {
 860         [0] = {
 861                 .start  = AT91SAM9261_BASE_US1,
 862                 .end    = AT91SAM9261_BASE_US1 + SZ_16K - 1,
 863                 .flags  = IORESOURCE_MEM,
 864         },
 865         [1] = {
 866                 .start  = AT91SAM9261_ID_US1,
 867                 .end    = AT91SAM9261_ID_US1,
 868                 .flags  = IORESOURCE_IRQ,
 869         },
 870 };
 871
 872 static struct atmel_uart_data uart1_data = {
 873         .use_dma_tx     = 1,
 874         .use_dma_rx     = 1,
 875 };
 876
 877 static u64 uart1_dmamask = DMA_BIT_MASK(32);
 878
 879 static struct platform_device at91sam9261_uart1_device = {
 880         .name           = "atmel_usart",
 881         .id             = 2,
 882         .dev            = {
 883                                 .dma_mask               = &uart1_dmamask,
 884                                 .coherent_dma_mask      = DMA_BIT_MASK(32),
 885                                 .platform_data          = &uart1_data,
 886         },
 887         .resource       = uart1_resources,
 888         .num_resources  = ARRAY_SIZE(uart1_resources),
 889 };
 890
 891 static inline void configure_usart1_pins(unsigned pins)
 892 {
 893         at91_set_A_periph(AT91_PIN_PC12, 1);            /* TXD1 */
 894         at91_set_A_periph(AT91_PIN_PC13, 0);            /* RXD1 */
 895
 896         if (pins & ATMEL_UART_RTS)
 897                 at91_set_B_periph(AT91_PIN_PA12, 0);    /* RTS1 */
 898         if (pins & ATMEL_UART_CTS)
 899                 at91_set_B_periph(AT91_PIN_PA13, 0);    /* CTS1 */
 900 }
 901
 902 static struct resource uart2_resources[] = {
 903         [0] = {
 904                 .start  = AT91SAM9261_BASE_US2,
 905                 .end    = AT91SAM9261_BASE_US2 + SZ_16K - 1,
 906                 .flags  = IORESOURCE_MEM,
 907         },
 908         [1] = {
 909                 .start  = AT91SAM9261_ID_US2,
 910                 .end    = AT91SAM9261_ID_US2,
 911                 .flags  = IORESOURCE_IRQ,
 912         },
 913 };
 914
 915 static struct atmel_uart_data uart2_data = {
 916         .use_dma_tx     = 1,
 917         .use_dma_rx     = 1,
 918 };
 919
 920 static u64 uart2_dmamask = DMA_BIT_MASK(32);
 921
 922 static struct platform_device at91sam9261_uart2_device = {
 923         .name           = "atmel_usart",
 924         .id             = 3,
 925         .dev            = {
 926                                 .dma_mask               = &uart2_dmamask,
 927                                 .coherent_dma_mask      = DMA_BIT_MASK(32),
 928                                 .platform_data          = &uart2_data,
 929         },
 930         .resource       = uart2_resources,
 931         .num_resources  = ARRAY_SIZE(uart2_resources),
 932 };
 933
 934 static inline void configure_usart2_pins(unsigned pins)
 935 {
 936         at91_set_A_periph(AT91_PIN_PC15, 0);            /* RXD2 */
 937         at91_set_A_periph(AT91_PIN_PC14, 1);            /* TXD2 */
 938
 939         if (pins & ATMEL_UART_RTS)
 940                 at91_set_B_periph(AT91_PIN_PA15, 0);    /* RTS2*/
 941         if (pins & ATMEL_UART_CTS)
 942                 at91_set_B_periph(AT91_PIN_PA16, 0);    /* CTS2 */
 943 }
 944
 945 static struct platform_device *at91_uarts[ATMEL_MAX_UART];      /* the UARTs to use */
 946 struct platform_device *atmel_default_console_device;   /* the serial console device */
 947
 948 void __init __deprecated at91_init_serial(struct at91_uart_config *config)
 949 {
 950         int i;
 951
 952         /* Fill in list of supported UARTs */
 953         for (i = 0; i < config->nr_tty; i++) {
 954                 switch (config->tty_map[i]) {
 955                         case 0:
 956                                 configure_usart0_pins(ATMEL_UART_CTS | ATMEL_UART_RTS);
 957                                 at91_uarts[i] = &at91sam9261_uart0_device;
 958                                 at91_clock_associate("usart0_clk", &at91sam9261_uart0_device.dev, "usart");
 959                                 break;
 960                         case 1:
 961                                 configure_usart1_pins(0);
 962                                 at91_uarts[i] = &at91sam9261_uart1_device;
 963                                 at91_clock_associate("usart1_clk", &at91sam9261_uart1_device.dev, "usart");
 964                                 break;
 965                         case 2:
 966                                 configure_usart2_pins(0);
 967                                 at91_uarts[i] = &at91sam9261_uart2_device;
 968                                 at91_clock_associate("usart2_clk", &at91sam9261_uart2_device.dev, "usart");
 969                                 break;
 970                         case 3:
 971                                 configure_dbgu_pins();
 972                                 at91_uarts[i] = &at91sam9261_dbgu_device;
 973                                 at91_clock_associate("mck", &at91sam9261_dbgu_device.dev, "usart");
 974                                 break;
 975                         default:
 976                                 continue;
 977                 }
 978                 at91_uarts[i]->id = i;          /* update ID number to mapped ID */
 979         }
 980
 981         /* Set serial console device */
 982         if (config->console_tty < ATMEL_MAX_UART)
 983                 atmel_default_console_device = at91_uarts[config->console_tty];
 984         if (!atmel_default_console_device)
 985                 printk(KERN_INFO "AT91: No default serial console defined.\n");
 986 }
 987
 988 void __init at91_register_uart(unsigned id, unsigned portnr, unsigned pins)
 989 {
 990         struct platform_device *pdev;
 991
 992         switch (id) {
 993                 case 0:         /* DBGU */
 994                         pdev = &at91sam9261_dbgu_device;
 995                         configure_dbgu_pins();
 996                         at91_clock_associate("mck", &pdev->dev, "usart");
 997                         break;
 998                 case AT91SAM9261_ID_US0:
 999                         pdev = &at91sam9261_uart0_device;
1000                         configure_usart0_pins(pins);
1001                         at91_clock_associate("usart0_clk", &pdev->dev, "usart");
1002                         break;
1003                 case AT91SAM9261_ID_US1:
1004                         pdev = &at91sam9261_uart1_device;
1005                         configure_usart1_pins(pins);
1006                         at91_clock_associate("usart1_clk", &pdev->dev, "usart");
1007                         break;
1008                 case AT91SAM9261_ID_US2:
1009                         pdev = &at91sam9261_uart2_device;
1010                         configure_usart2_pins(pins);
1011                         at91_clock_associate("usart2_clk", &pdev->dev, "usart");
1012                         break;
1013                 default:
1014                         return;
1015         }
1016         pdev->id = portnr;              /* update to mapped ID */
1017
1018         if (portnr < ATMEL_MAX_UART)
1019                 at91_uarts[portnr] = pdev;
1020 }
1021
1022 void __init at91_set_serial_console(unsigned portnr)
1023 {
1024         if (portnr < ATMEL_MAX_UART)
1025                 atmel_default_console_device = at91_uarts[portnr];
1026         if (!atmel_default_console_device)
1027                 printk(KERN_INFO "AT91: No default serial console defined.\n");
1028 }
1029
1030 void __init at91_add_device_serial(void)
1031 {
1032         int i;
1033
1034         for (i = 0; i < ATMEL_MAX_UART; i++) {
1035                 if (at91_uarts[i])
1036                         platform_device_register(at91_uarts[i]);
1037         }
1038 }
1039 #else
1040 void __init __deprecated at91_init_serial(struct at91_uart_config *config) {}
1041 void __init at91_register_uart(unsigned id, unsigned portnr, unsigned pins) {}
1042 void __init at91_set_serial_console(unsigned portnr) {}
1043 void __init at91_add_device_serial(void) {}
1044 #endif
1045
1046
1047 /* -------------------------------------------------------------------- */
1048
1049 /*
1050  * These devices are always present and don't need any board-specific
1051  * setup.
1052  */
1053 static int __init at91_add_standard_devices(void)
1054 {
1055         at91_add_device_rtt();
1056         at91_add_device_watchdog();
1057         return 0;
1058 }
1059
1060 arch_initcall(at91_add_standard_devices);