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/gpio.h>
  18 #include <linux/platform_device.h>
  19 #include <linux/i2c-gpio.h>
  20
  21 #include <linux/fb.h>
  22 #include <video/atmel_lcdc.h>
  23
  24 #include <mach/board.h>
  25 #include <mach/at91sam9261.h>
  26 #include <mach/at91sam9261_matrix.h>
  27 #include <mach/at91sam9_smc.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         int i;
  68
  69         if (!data)
  70                 return;
  71
  72         /* Enable overcurrent notification */
  73         for (i = 0; i < data->ports; i++) {
  74                 if (data->overcurrent_pin[i])
  75                         at91_set_gpio_input(data->overcurrent_pin[i], 1);
  76         }
  77
  78         usbh_data = *data;
  79         platform_device_register(&at91sam9261_usbh_device);
  80 }
  81 #else
  82 void __init at91_add_device_usbh(struct at91_usbh_data *data) {}
  83 #endif
  84
  85
  86 /* --------------------------------------------------------------------
  87  *  USB Device (Gadget)
  88  * -------------------------------------------------------------------- */
  89
  90 #ifdef CONFIG_USB_GADGET_AT91
  91 static struct at91_udc_data udc_data;
  92
  93 static struct resource udc_resources[] = {
  94         [0] = {
  95                 .start  = AT91SAM9261_BASE_UDP,
  96                 .end    = AT91SAM9261_BASE_UDP + SZ_16K - 1,
  97                 .flags  = IORESOURCE_MEM,
  98         },
  99         [1] = {
 100                 .start  = AT91SAM9261_ID_UDP,
 101                 .end    = AT91SAM9261_ID_UDP,
 102                 .flags  = IORESOURCE_IRQ,
 103         },
 104 };
 105
 106 static struct platform_device at91sam9261_udc_device = {
 107         .name           = "at91_udc",
 108         .id             = -1,
 109         .dev            = {
 110                                 .platform_data          = &udc_data,
 111         },
 112         .resource       = udc_resources,
 113         .num_resources  = ARRAY_SIZE(udc_resources),
 114 };
 115
 116 void __init at91_add_device_udc(struct at91_udc_data *data)
 117 {
 118         if (!data)
 119                 return;
 120
 121         if (data->vbus_pin) {
 122                 at91_set_gpio_input(data->vbus_pin, 0);
 123                 at91_set_deglitch(data->vbus_pin, 1);
 124         }
 125
 126         /* Pullup pin is handled internally by USB device peripheral */
 127
 128         udc_data = *data;
 129         platform_device_register(&at91sam9261_udc_device);
 130 }
 131 #else
 132 void __init at91_add_device_udc(struct at91_udc_data *data) {}
 133 #endif
 134
 135 /* --------------------------------------------------------------------
 136  *  MMC / SD
 137  * -------------------------------------------------------------------- */
 138
 139 #if defined(CONFIG_MMC_AT91) || defined(CONFIG_MMC_AT91_MODULE)
 140 static u64 mmc_dmamask = DMA_BIT_MASK(32);
 141 static struct at91_mmc_data mmc_data;
 142
 143 static struct resource mmc_resources[] = {
 144         [0] = {
 145                 .start  = AT91SAM9261_BASE_MCI,
 146                 .end    = AT91SAM9261_BASE_MCI + SZ_16K - 1,
 147                 .flags  = IORESOURCE_MEM,
 148         },
 149         [1] = {
 150                 .start  = AT91SAM9261_ID_MCI,
 151                 .end    = AT91SAM9261_ID_MCI,
 152                 .flags  = IORESOURCE_IRQ,
 153         },
 154 };
 155
 156 static struct platform_device at91sam9261_mmc_device = {
 157         .name           = "at91_mci",
 158         .id             = -1,
 159         .dev            = {
 160                                 .dma_mask               = &mmc_dmamask,
 161                                 .coherent_dma_mask      = DMA_BIT_MASK(32),
 162                                 .platform_data          = &mmc_data,
 163         },
 164         .resource       = mmc_resources,
 165         .num_resources  = ARRAY_SIZE(mmc_resources),
 166 };
 167
 168 void __init at91_add_device_mmc(short mmc_id, struct at91_mmc_data *data)
 169 {
 170         if (!data)
 171                 return;
 172
 173         /* input/irq */
 174         if (data->det_pin) {
 175                 at91_set_gpio_input(data->det_pin, 1);
 176                 at91_set_deglitch(data->det_pin, 1);
 177         }
 178         if (data->wp_pin)
 179                 at91_set_gpio_input(data->wp_pin, 1);
 180         if (data->vcc_pin)
 181                 at91_set_gpio_output(data->vcc_pin, 0);
 182
 183         /* CLK */
 184         at91_set_B_periph(AT91_PIN_PA2, 0);
 185
 186         /* CMD */
 187         at91_set_B_periph(AT91_PIN_PA1, 1);
 188
 189         /* DAT0, maybe DAT1..DAT3 */
 190         at91_set_B_periph(AT91_PIN_PA0, 1);
 191         if (data->wire4) {
 192                 at91_set_B_periph(AT91_PIN_PA4, 1);
 193                 at91_set_B_periph(AT91_PIN_PA5, 1);
 194                 at91_set_B_periph(AT91_PIN_PA6, 1);
 195         }
 196
 197         mmc_data = *data;
 198         platform_device_register(&at91sam9261_mmc_device);
 199 }
 200 #else
 201 void __init at91_add_device_mmc(short mmc_id, struct at91_mmc_data *data) {}
 202 #endif
 203
 204
 205 /* --------------------------------------------------------------------
 206  *  NAND / SmartMedia
 207  * -------------------------------------------------------------------- */
 208
 209 #if defined(CONFIG_MTD_NAND_ATMEL) || defined(CONFIG_MTD_NAND_ATMEL_MODULE)
 210 static struct atmel_nand_data nand_data;
 211
 212 #define NAND_BASE       AT91_CHIPSELECT_3
 213
 214 static struct resource nand_resources[] = {
 215         {
 216                 .start  = NAND_BASE,
 217                 .end    = NAND_BASE + SZ_256M - 1,
 218                 .flags  = IORESOURCE_MEM,
 219         }
 220 };
 221
 222 static struct platform_device atmel_nand_device = {
 223         .name           = "atmel_nand",
 224         .id             = -1,
 225         .dev            = {
 226                                 .platform_data  = &nand_data,
 227         },
 228         .resource       = nand_resources,
 229         .num_resources  = ARRAY_SIZE(nand_resources),
 230 };
 231
 232 void __init at91_add_device_nand(struct atmel_nand_data *data)
 233 {
 234         unsigned long csa;
 235
 236         if (!data)
 237                 return;
 238
 239         csa = at91_sys_read(AT91_MATRIX_EBICSA);
 240         at91_sys_write(AT91_MATRIX_EBICSA, csa | AT91_MATRIX_CS3A_SMC_SMARTMEDIA);
 241
 242         /* enable pin */
 243         if (data->enable_pin)
 244                 at91_set_gpio_output(data->enable_pin, 1);
 245
 246         /* ready/busy pin */
 247         if (data->rdy_pin)
 248                 at91_set_gpio_input(data->rdy_pin, 1);
 249
 250         /* card detect pin */
 251         if (data->det_pin)
 252                 at91_set_gpio_input(data->det_pin, 1);
 253
 254         at91_set_A_periph(AT91_PIN_PC0, 0);             /* NANDOE */
 255         at91_set_A_periph(AT91_PIN_PC1, 0);             /* NANDWE */
 256
 257         nand_data = *data;
 258         platform_device_register(&atmel_nand_device);
 259 }
 260
 261 #else
 262 void __init at91_add_device_nand(struct atmel_nand_data *data) {}
 263 #endif
 264
 265
 266 /* --------------------------------------------------------------------
 267  *  TWI (i2c)
 268  * -------------------------------------------------------------------- */
 269
 270 /*
 271  * Prefer the GPIO code since the TWI controller isn't robust
 272  * (gets overruns and underruns under load) and can only issue
 273  * repeated STARTs in one scenario (the driver doesn't yet handle them).
 274  */
 275 #if defined(CONFIG_I2C_GPIO) || defined(CONFIG_I2C_GPIO_MODULE)
 276
 277 static struct i2c_gpio_platform_data pdata = {
 278         .sda_pin                = AT91_PIN_PA7,
 279         .sda_is_open_drain      = 1,
 280         .scl_pin                = AT91_PIN_PA8,
 281         .scl_is_open_drain      = 1,
 282         .udelay                 = 2,            /* ~100 kHz */
 283 };
 284
 285 static struct platform_device at91sam9261_twi_device = {
 286         .name                   = "i2c-gpio",
 287         .id                     = -1,
 288         .dev.platform_data      = &pdata,
 289 };
 290
 291 void __init at91_add_device_i2c(struct i2c_board_info *devices, int nr_devices)
 292 {
 293         at91_set_GPIO_periph(AT91_PIN_PA7, 1);          /* TWD (SDA) */
 294         at91_set_multi_drive(AT91_PIN_PA7, 1);
 295
 296         at91_set_GPIO_periph(AT91_PIN_PA8, 1);          /* TWCK (SCL) */
 297         at91_set_multi_drive(AT91_PIN_PA8, 1);
 298
 299         i2c_register_board_info(0, devices, nr_devices);
 300         platform_device_register(&at91sam9261_twi_device);
 301 }
 302
 303 #elif defined(CONFIG_I2C_AT91) || defined(CONFIG_I2C_AT91_MODULE)
 304
 305 static struct resource twi_resources[] = {
 306         [0] = {
 307                 .start  = AT91SAM9261_BASE_TWI,
 308                 .end    = AT91SAM9261_BASE_TWI + SZ_16K - 1,
 309                 .flags  = IORESOURCE_MEM,
 310         },
 311         [1] = {
 312                 .start  = AT91SAM9261_ID_TWI,
 313                 .end    = AT91SAM9261_ID_TWI,
 314                 .flags  = IORESOURCE_IRQ,
 315         },
 316 };
 317
 318 static struct platform_device at91sam9261_twi_device = {
 319         .name           = "at91_i2c",
 320         .id             = -1,
 321         .resource       = twi_resources,
 322         .num_resources  = ARRAY_SIZE(twi_resources),
 323 };
 324
 325 void __init at91_add_device_i2c(struct i2c_board_info *devices, int nr_devices)
 326 {
 327         /* pins used for TWI interface */
 328         at91_set_A_periph(AT91_PIN_PA7, 0);             /* TWD */
 329         at91_set_multi_drive(AT91_PIN_PA7, 1);
 330
 331         at91_set_A_periph(AT91_PIN_PA8, 0);             /* TWCK */
 332         at91_set_multi_drive(AT91_PIN_PA8, 1);
 333
 334         i2c_register_board_info(0, devices, nr_devices);
 335         platform_device_register(&at91sam9261_twi_device);
 336 }
 337 #else
 338 void __init at91_add_device_i2c(struct i2c_board_info *devices, int nr_devices) {}
 339 #endif
 340
 341
 342 /* --------------------------------------------------------------------
 343  *  SPI
 344  * -------------------------------------------------------------------- */
 345
 346 #if defined(CONFIG_SPI_ATMEL) || defined(CONFIG_SPI_ATMEL_MODULE)
 347 static u64 spi_dmamask = DMA_BIT_MASK(32);
 348
 349 static struct resource spi0_resources[] = {
 350         [0] = {
 351                 .start  = AT91SAM9261_BASE_SPI0,
 352                 .end    = AT91SAM9261_BASE_SPI0 + SZ_16K - 1,
 353                 .flags  = IORESOURCE_MEM,
 354         },
 355         [1] = {
 356                 .start  = AT91SAM9261_ID_SPI0,
 357                 .end    = AT91SAM9261_ID_SPI0,
 358                 .flags  = IORESOURCE_IRQ,
 359         },
 360 };
 361
 362 static struct platform_device at91sam9261_spi0_device = {
 363         .name           = "atmel_spi",
 364         .id             = 0,
 365         .dev            = {
 366                                 .dma_mask               = &spi_dmamask,
 367                                 .coherent_dma_mask      = DMA_BIT_MASK(32),
 368         },
 369         .resource       = spi0_resources,
 370         .num_resources  = ARRAY_SIZE(spi0_resources),
 371 };
 372
 373 static const unsigned spi0_standard_cs[4] = { AT91_PIN_PA3, AT91_PIN_PA4, AT91_PIN_PA5, AT91_PIN_PA6 };
 374
 375 static struct resource spi1_resources[] = {
 376         [0] = {
 377                 .start  = AT91SAM9261_BASE_SPI1,
 378                 .end    = AT91SAM9261_BASE_SPI1 + SZ_16K - 1,
 379                 .flags  = IORESOURCE_MEM,
 380         },
 381         [1] = {
 382                 .start  = AT91SAM9261_ID_SPI1,
 383                 .end    = AT91SAM9261_ID_SPI1,
 384                 .flags  = IORESOURCE_IRQ,
 385         },
 386 };
 387
 388 static struct platform_device at91sam9261_spi1_device = {
 389         .name           = "atmel_spi",
 390         .id             = 1,
 391         .dev            = {
 392                                 .dma_mask               = &spi_dmamask,
 393                                 .coherent_dma_mask      = DMA_BIT_MASK(32),
 394         },
 395         .resource       = spi1_resources,
 396         .num_resources  = ARRAY_SIZE(spi1_resources),
 397 };
 398
 399 static const unsigned spi1_standard_cs[4] = { AT91_PIN_PB28, AT91_PIN_PA24, AT91_PIN_PA25, AT91_PIN_PA26 };
 400
 401 void __init at91_add_device_spi(struct spi_board_info *devices, int nr_devices)
 402 {
 403         int i;
 404         unsigned long cs_pin;
 405         short enable_spi0 = 0;
 406         short enable_spi1 = 0;
 407
 408         /* Choose SPI chip-selects */
 409         for (i = 0; i < nr_devices; i++) {
 410                 if (devices[i].controller_data)
 411                         cs_pin = (unsigned long) devices[i].controller_data;
 412                 else if (devices[i].bus_num == 0)
 413                         cs_pin = spi0_standard_cs[devices[i].chip_select];
 414                 else
 415                         cs_pin = spi1_standard_cs[devices[i].chip_select];
 416
 417                 if (devices[i].bus_num == 0)
 418                         enable_spi0 = 1;
 419                 else
 420                         enable_spi1 = 1;
 421
 422                 /* enable chip-select pin */
 423                 at91_set_gpio_output(cs_pin, 1);
 424
 425                 /* pass chip-select pin to driver */
 426                 devices[i].controller_data = (void *) cs_pin;
 427         }
 428
 429         spi_register_board_info(devices, nr_devices);
 430
 431         /* Configure SPI bus(es) */
 432         if (enable_spi0) {
 433                 at91_set_A_periph(AT91_PIN_PA0, 0);     /* SPI0_MISO */
 434                 at91_set_A_periph(AT91_PIN_PA1, 0);     /* SPI0_MOSI */
 435                 at91_set_A_periph(AT91_PIN_PA2, 0);     /* SPI0_SPCK */
 436
 437                 platform_device_register(&at91sam9261_spi0_device);
 438         }
 439         if (enable_spi1) {
 440                 at91_set_A_periph(AT91_PIN_PB30, 0);    /* SPI1_MISO */
 441                 at91_set_A_periph(AT91_PIN_PB31, 0);    /* SPI1_MOSI */
 442                 at91_set_A_periph(AT91_PIN_PB29, 0);    /* SPI1_SPCK */
 443
 444                 platform_device_register(&at91sam9261_spi1_device);
 445         }
 446 }
 447 #else
 448 void __init at91_add_device_spi(struct spi_board_info *devices, int nr_devices) {}
 449 #endif
 450
 451
 452 /* --------------------------------------------------------------------
 453  *  LCD Controller
 454  * -------------------------------------------------------------------- */
 455
 456 #if defined(CONFIG_FB_ATMEL) || defined(CONFIG_FB_ATMEL_MODULE)
 457 static u64 lcdc_dmamask = DMA_BIT_MASK(32);
 458 static struct atmel_lcdfb_info lcdc_data;
 459
 460 static struct resource lcdc_resources[] = {
 461         [0] = {
 462                 .start  = AT91SAM9261_LCDC_BASE,
 463                 .end    = AT91SAM9261_LCDC_BASE + SZ_4K - 1,
 464                 .flags  = IORESOURCE_MEM,
 465         },
 466         [1] = {
 467                 .start  = AT91SAM9261_ID_LCDC,
 468                 .end    = AT91SAM9261_ID_LCDC,
 469                 .flags  = IORESOURCE_IRQ,
 470         },
 471 #if defined(CONFIG_FB_INTSRAM)
 472         [2] = {
 473                 .start  = AT91SAM9261_SRAM_BASE,
 474                 .end    = AT91SAM9261_SRAM_BASE + AT91SAM9261_SRAM_SIZE - 1,
 475                 .flags  = IORESOURCE_MEM,
 476         },
 477 #endif
 478 };
 479
 480 static struct platform_device at91_lcdc_device = {
 481         .name           = "atmel_lcdfb",
 482         .id             = 0,
 483         .dev            = {
 484                                 .dma_mask               = &lcdc_dmamask,
 485                                 .coherent_dma_mask      = DMA_BIT_MASK(32),
 486                                 .platform_data          = &lcdc_data,
 487         },
 488         .resource       = lcdc_resources,
 489         .num_resources  = ARRAY_SIZE(lcdc_resources),
 490 };
 491
 492 void __init at91_add_device_lcdc(struct atmel_lcdfb_info *data)
 493 {
 494         if (!data) {
 495                 return;
 496         }
 497
 498 #if defined(CONFIG_FB_ATMEL_STN)
 499         at91_set_A_periph(AT91_PIN_PB0, 0);     /* LCDVSYNC */
 500         at91_set_A_periph(AT91_PIN_PB1, 0);     /* LCDHSYNC */
 501         at91_set_A_periph(AT91_PIN_PB2, 0);     /* LCDDOTCK */
 502         at91_set_A_periph(AT91_PIN_PB3, 0);     /* LCDDEN */
 503         at91_set_A_periph(AT91_PIN_PB4, 0);     /* LCDCC */
 504         at91_set_A_periph(AT91_PIN_PB5, 0);     /* LCDD0 */
 505         at91_set_A_periph(AT91_PIN_PB6, 0);     /* LCDD1 */
 506         at91_set_A_periph(AT91_PIN_PB7, 0);     /* LCDD2 */
 507         at91_set_A_periph(AT91_PIN_PB8, 0);     /* LCDD3 */
 508 #else
 509         at91_set_A_periph(AT91_PIN_PB1, 0);     /* LCDHSYNC */
 510         at91_set_A_periph(AT91_PIN_PB2, 0);     /* LCDDOTCK */
 511         at91_set_A_periph(AT91_PIN_PB3, 0);     /* LCDDEN */
 512         at91_set_A_periph(AT91_PIN_PB4, 0);     /* LCDCC */
 513         at91_set_A_periph(AT91_PIN_PB7, 0);     /* LCDD2 */
 514         at91_set_A_periph(AT91_PIN_PB8, 0);     /* LCDD3 */
 515         at91_set_A_periph(AT91_PIN_PB9, 0);     /* LCDD4 */
 516         at91_set_A_periph(AT91_PIN_PB10, 0);    /* LCDD5 */
 517         at91_set_A_periph(AT91_PIN_PB11, 0);    /* LCDD6 */
 518         at91_set_A_periph(AT91_PIN_PB12, 0);    /* LCDD7 */
 519         at91_set_A_periph(AT91_PIN_PB15, 0);    /* LCDD10 */
 520         at91_set_A_periph(AT91_PIN_PB16, 0);    /* LCDD11 */
 521         at91_set_A_periph(AT91_PIN_PB17, 0);    /* LCDD12 */
 522         at91_set_A_periph(AT91_PIN_PB18, 0);    /* LCDD13 */
 523         at91_set_A_periph(AT91_PIN_PB19, 0);    /* LCDD14 */
 524         at91_set_A_periph(AT91_PIN_PB20, 0);    /* LCDD15 */
 525         at91_set_B_periph(AT91_PIN_PB23, 0);    /* LCDD18 */
 526         at91_set_B_periph(AT91_PIN_PB24, 0);    /* LCDD19 */
 527         at91_set_B_periph(AT91_PIN_PB25, 0);    /* LCDD20 */
 528         at91_set_B_periph(AT91_PIN_PB26, 0);    /* LCDD21 */
 529         at91_set_B_periph(AT91_PIN_PB27, 0);    /* LCDD22 */
 530         at91_set_B_periph(AT91_PIN_PB28, 0);    /* LCDD23 */
 531 #endif
 532
 533         if (ARRAY_SIZE(lcdc_resources) > 2) {
 534                 void __iomem *fb;
 535                 struct resource *fb_res = &lcdc_resources[2];
 536                 size_t fb_len = resource_size(fb_res);
 537
 538                 fb = ioremap(fb_res->start, fb_len);
 539                 if (fb) {
 540                         memset(fb, 0, fb_len);
 541                         iounmap(fb);
 542                 }
 543         }
 544         lcdc_data = *data;
 545         platform_device_register(&at91_lcdc_device);
 546 }
 547 #else
 548 void __init at91_add_device_lcdc(struct atmel_lcdfb_info *data) {}
 549 #endif
 550
 551
 552 /* --------------------------------------------------------------------
 553  *  Timer/Counter block
 554  * -------------------------------------------------------------------- */
 555
 556 #ifdef CONFIG_ATMEL_TCLIB
 557
 558 static struct resource tcb_resources[] = {
 559         [0] = {
 560                 .start  = AT91SAM9261_BASE_TCB0,
 561                 .end    = AT91SAM9261_BASE_TCB0 + SZ_16K - 1,
 562                 .flags  = IORESOURCE_MEM,
 563         },
 564         [1] = {
 565                 .start  = AT91SAM9261_ID_TC0,
 566                 .end    = AT91SAM9261_ID_TC0,
 567                 .flags  = IORESOURCE_IRQ,
 568         },
 569         [2] = {
 570                 .start  = AT91SAM9261_ID_TC1,
 571                 .end    = AT91SAM9261_ID_TC1,
 572                 .flags  = IORESOURCE_IRQ,
 573         },
 574         [3] = {
 575                 .start  = AT91SAM9261_ID_TC2,
 576                 .end    = AT91SAM9261_ID_TC2,
 577                 .flags  = IORESOURCE_IRQ,
 578         },
 579 };
 580
 581 static struct platform_device at91sam9261_tcb_device = {
 582         .name           = "atmel_tcb",
 583         .id             = 0,
 584         .resource       = tcb_resources,
 585         .num_resources  = ARRAY_SIZE(tcb_resources),
 586 };
 587
 588 static void __init at91_add_device_tc(void)
 589 {
 590         platform_device_register(&at91sam9261_tcb_device);
 591 }
 592 #else
 593 static void __init at91_add_device_tc(void) { }
 594 #endif
 595
 596
 597 /* --------------------------------------------------------------------
 598  *  RTT
 599  * -------------------------------------------------------------------- */
 600
 601 static struct resource rtt_resources[] = {
 602         {
 603                 .start  = AT91_BASE_SYS + AT91_RTT,
 604                 .end    = AT91_BASE_SYS + AT91_RTT + SZ_16 - 1,
 605                 .flags  = IORESOURCE_MEM,
 606         }
 607 };
 608
 609 static struct platform_device at91sam9261_rtt_device = {
 610         .name           = "at91_rtt",
 611         .id             = 0,
 612         .resource       = rtt_resources,
 613         .num_resources  = ARRAY_SIZE(rtt_resources),
 614 };
 615
 616 static void __init at91_add_device_rtt(void)
 617 {
 618         platform_device_register(&at91sam9261_rtt_device);
 619 }
 620
 621
 622 /* --------------------------------------------------------------------
 623  *  Watchdog
 624  * -------------------------------------------------------------------- */
 625
 626 #if defined(CONFIG_AT91SAM9X_WATCHDOG) || defined(CONFIG_AT91SAM9X_WATCHDOG_MODULE)
 627 static struct platform_device at91sam9261_wdt_device = {
 628         .name           = "at91_wdt",
 629         .id             = -1,
 630         .num_resources  = 0,
 631 };
 632
 633 static void __init at91_add_device_watchdog(void)
 634 {
 635         platform_device_register(&at91sam9261_wdt_device);
 636 }
 637 #else
 638 static void __init at91_add_device_watchdog(void) {}
 639 #endif
 640
 641
 642 /* --------------------------------------------------------------------
 643  *  SSC -- Synchronous Serial Controller
 644  * -------------------------------------------------------------------- */
 645
 646 #if defined(CONFIG_ATMEL_SSC) || defined(CONFIG_ATMEL_SSC_MODULE)
 647 static u64 ssc0_dmamask = DMA_BIT_MASK(32);
 648
 649 static struct resource ssc0_resources[] = {
 650         [0] = {
 651                 .start  = AT91SAM9261_BASE_SSC0,
 652                 .end    = AT91SAM9261_BASE_SSC0 + SZ_16K - 1,
 653                 .flags  = IORESOURCE_MEM,
 654         },
 655         [1] = {
 656                 .start  = AT91SAM9261_ID_SSC0,
 657                 .end    = AT91SAM9261_ID_SSC0,
 658                 .flags  = IORESOURCE_IRQ,
 659         },
 660 };
 661
 662 static struct platform_device at91sam9261_ssc0_device = {
 663         .name   = "ssc",
 664         .id     = 0,
 665         .dev    = {
 666                 .dma_mask               = &ssc0_dmamask,
 667                 .coherent_dma_mask      = DMA_BIT_MASK(32),
 668         },
 669         .resource       = ssc0_resources,
 670         .num_resources  = ARRAY_SIZE(ssc0_resources),
 671 };
 672
 673 static inline void configure_ssc0_pins(unsigned pins)
 674 {
 675         if (pins & ATMEL_SSC_TF)
 676                 at91_set_A_periph(AT91_PIN_PB21, 1);
 677         if (pins & ATMEL_SSC_TK)
 678                 at91_set_A_periph(AT91_PIN_PB22, 1);
 679         if (pins & ATMEL_SSC_TD)
 680                 at91_set_A_periph(AT91_PIN_PB23, 1);
 681         if (pins & ATMEL_SSC_RD)
 682                 at91_set_A_periph(AT91_PIN_PB24, 1);
 683         if (pins & ATMEL_SSC_RK)
 684                 at91_set_A_periph(AT91_PIN_PB25, 1);
 685         if (pins & ATMEL_SSC_RF)
 686                 at91_set_A_periph(AT91_PIN_PB26, 1);
 687 }
 688
 689 static u64 ssc1_dmamask = DMA_BIT_MASK(32);
 690
 691 static struct resource ssc1_resources[] = {
 692         [0] = {
 693                 .start  = AT91SAM9261_BASE_SSC1,
 694                 .end    = AT91SAM9261_BASE_SSC1 + SZ_16K - 1,
 695                 .flags  = IORESOURCE_MEM,
 696         },
 697         [1] = {
 698                 .start  = AT91SAM9261_ID_SSC1,
 699                 .end    = AT91SAM9261_ID_SSC1,
 700                 .flags  = IORESOURCE_IRQ,
 701         },
 702 };
 703
 704 static struct platform_device at91sam9261_ssc1_device = {
 705         .name   = "ssc",
 706         .id     = 1,
 707         .dev    = {
 708                 .dma_mask               = &ssc1_dmamask,
 709                 .coherent_dma_mask      = DMA_BIT_MASK(32),
 710         },
 711         .resource       = ssc1_resources,
 712         .num_resources  = ARRAY_SIZE(ssc1_resources),
 713 };
 714
 715 static inline void configure_ssc1_pins(unsigned pins)
 716 {
 717         if (pins & ATMEL_SSC_TF)
 718                 at91_set_B_periph(AT91_PIN_PA17, 1);
 719         if (pins & ATMEL_SSC_TK)
 720                 at91_set_B_periph(AT91_PIN_PA18, 1);
 721         if (pins & ATMEL_SSC_TD)
 722                 at91_set_B_periph(AT91_PIN_PA19, 1);
 723         if (pins & ATMEL_SSC_RD)
 724                 at91_set_B_periph(AT91_PIN_PA20, 1);
 725         if (pins & ATMEL_SSC_RK)
 726                 at91_set_B_periph(AT91_PIN_PA21, 1);
 727         if (pins & ATMEL_SSC_RF)
 728                 at91_set_B_periph(AT91_PIN_PA22, 1);
 729 }
 730
 731 static u64 ssc2_dmamask = DMA_BIT_MASK(32);
 732
 733 static struct resource ssc2_resources[] = {
 734         [0] = {
 735                 .start  = AT91SAM9261_BASE_SSC2,
 736                 .end    = AT91SAM9261_BASE_SSC2 + SZ_16K - 1,
 737                 .flags  = IORESOURCE_MEM,
 738         },
 739         [1] = {
 740                 .start  = AT91SAM9261_ID_SSC2,
 741                 .end    = AT91SAM9261_ID_SSC2,
 742                 .flags  = IORESOURCE_IRQ,
 743         },
 744 };
 745
 746 static struct platform_device at91sam9261_ssc2_device = {
 747         .name   = "ssc",
 748         .id     = 2,
 749         .dev    = {
 750                 .dma_mask               = &ssc2_dmamask,
 751                 .coherent_dma_mask      = DMA_BIT_MASK(32),
 752         },
 753         .resource       = ssc2_resources,
 754         .num_resources  = ARRAY_SIZE(ssc2_resources),
 755 };
 756
 757 static inline void configure_ssc2_pins(unsigned pins)
 758 {
 759         if (pins & ATMEL_SSC_TF)
 760                 at91_set_B_periph(AT91_PIN_PC25, 1);
 761         if (pins & ATMEL_SSC_TK)
 762                 at91_set_B_periph(AT91_PIN_PC26, 1);
 763         if (pins & ATMEL_SSC_TD)
 764                 at91_set_B_periph(AT91_PIN_PC27, 1);
 765         if (pins & ATMEL_SSC_RD)
 766                 at91_set_B_periph(AT91_PIN_PC28, 1);
 767         if (pins & ATMEL_SSC_RK)
 768                 at91_set_B_periph(AT91_PIN_PC29, 1);
 769         if (pins & ATMEL_SSC_RF)
 770                 at91_set_B_periph(AT91_PIN_PC30, 1);
 771 }
 772
 773 /*
 774  * SSC controllers are accessed through library code, instead of any
 775  * kind of all-singing/all-dancing driver.  For example one could be
 776  * used by a particular I2S audio codec's driver, while another one
 777  * on the same system might be used by a custom data capture driver.
 778  */
 779 void __init at91_add_device_ssc(unsigned id, unsigned pins)
 780 {
 781         struct platform_device *pdev;
 782
 783         /*
 784          * NOTE: caller is responsible for passing information matching
 785          * "pins" to whatever will be using each particular controller.
 786          */
 787         switch (id) {
 788         case AT91SAM9261_ID_SSC0:
 789                 pdev = &at91sam9261_ssc0_device;
 790                 configure_ssc0_pins(pins);
 791                 break;
 792         case AT91SAM9261_ID_SSC1:
 793                 pdev = &at91sam9261_ssc1_device;
 794                 configure_ssc1_pins(pins);
 795                 break;
 796         case AT91SAM9261_ID_SSC2:
 797                 pdev = &at91sam9261_ssc2_device;
 798                 configure_ssc2_pins(pins);
 799                 break;
 800         default:
 801                 return;
 802         }
 803
 804         platform_device_register(pdev);
 805 }
 806
 807 #else
 808 void __init at91_add_device_ssc(unsigned id, unsigned pins) {}
 809 #endif
 810
 811
 812 /* --------------------------------------------------------------------
 813  *  UART
 814  * -------------------------------------------------------------------- */
 815
 816 #if defined(CONFIG_SERIAL_ATMEL)
 817 static struct resource dbgu_resources[] = {
 818         [0] = {
 819                 .start  = AT91_BASE_SYS + AT91_DBGU,
 820                 .end    = AT91_BASE_SYS + AT91_DBGU + SZ_512 - 1,
 821                 .flags  = IORESOURCE_MEM,
 822         },
 823         [1] = {
 824                 .start  = AT91_ID_SYS,
 825                 .end    = AT91_ID_SYS,
 826                 .flags  = IORESOURCE_IRQ,
 827         },
 828 };
 829
 830 static struct atmel_uart_data dbgu_data = {
 831         .use_dma_tx     = 0,
 832         .use_dma_rx     = 0,            /* DBGU not capable of receive DMA */
 833 };
 834
 835 static u64 dbgu_dmamask = DMA_BIT_MASK(32);
 836
 837 static struct platform_device at91sam9261_dbgu_device = {
 838         .name           = "atmel_usart",
 839         .id             = 0,
 840         .dev            = {
 841                                 .dma_mask               = &dbgu_dmamask,
 842                                 .coherent_dma_mask      = DMA_BIT_MASK(32),
 843                                 .platform_data          = &dbgu_data,
 844         },
 845         .resource       = dbgu_resources,
 846         .num_resources  = ARRAY_SIZE(dbgu_resources),
 847 };
 848
 849 static inline void configure_dbgu_pins(void)
 850 {
 851         at91_set_A_periph(AT91_PIN_PA9, 0);             /* DRXD */
 852         at91_set_A_periph(AT91_PIN_PA10, 1);            /* DTXD */
 853 }
 854
 855 static struct resource uart0_resources[] = {
 856         [0] = {
 857                 .start  = AT91SAM9261_BASE_US0,
 858                 .end    = AT91SAM9261_BASE_US0 + SZ_16K - 1,
 859                 .flags  = IORESOURCE_MEM,
 860         },
 861         [1] = {
 862                 .start  = AT91SAM9261_ID_US0,
 863                 .end    = AT91SAM9261_ID_US0,
 864                 .flags  = IORESOURCE_IRQ,
 865         },
 866 };
 867
 868 static struct atmel_uart_data uart0_data = {
 869         .use_dma_tx     = 1,
 870         .use_dma_rx     = 1,
 871 };
 872
 873 static u64 uart0_dmamask = DMA_BIT_MASK(32);
 874
 875 static struct platform_device at91sam9261_uart0_device = {
 876         .name           = "atmel_usart",
 877         .id             = 1,
 878         .dev            = {
 879                                 .dma_mask               = &uart0_dmamask,
 880                                 .coherent_dma_mask      = DMA_BIT_MASK(32),
 881                                 .platform_data          = &uart0_data,
 882         },
 883         .resource       = uart0_resources,
 884         .num_resources  = ARRAY_SIZE(uart0_resources),
 885 };
 886
 887 static inline void configure_usart0_pins(unsigned pins)
 888 {
 889         at91_set_A_periph(AT91_PIN_PC8, 1);             /* TXD0 */
 890         at91_set_A_periph(AT91_PIN_PC9, 0);             /* RXD0 */
 891
 892         if (pins & ATMEL_UART_RTS)
 893                 at91_set_A_periph(AT91_PIN_PC10, 0);    /* RTS0 */
 894         if (pins & ATMEL_UART_CTS)
 895                 at91_set_A_periph(AT91_PIN_PC11, 0);    /* CTS0 */
 896 }
 897
 898 static struct resource uart1_resources[] = {
 899         [0] = {
 900                 .start  = AT91SAM9261_BASE_US1,
 901                 .end    = AT91SAM9261_BASE_US1 + SZ_16K - 1,
 902                 .flags  = IORESOURCE_MEM,
 903         },
 904         [1] = {
 905                 .start  = AT91SAM9261_ID_US1,
 906                 .end    = AT91SAM9261_ID_US1,
 907                 .flags  = IORESOURCE_IRQ,
 908         },
 909 };
 910
 911 static struct atmel_uart_data uart1_data = {
 912         .use_dma_tx     = 1,
 913         .use_dma_rx     = 1,
 914 };
 915
 916 static u64 uart1_dmamask = DMA_BIT_MASK(32);
 917
 918 static struct platform_device at91sam9261_uart1_device = {
 919         .name           = "atmel_usart",
 920         .id             = 2,
 921         .dev            = {
 922                                 .dma_mask               = &uart1_dmamask,
 923                                 .coherent_dma_mask      = DMA_BIT_MASK(32),
 924                                 .platform_data          = &uart1_data,
 925         },
 926         .resource       = uart1_resources,
 927         .num_resources  = ARRAY_SIZE(uart1_resources),
 928 };
 929
 930 static inline void configure_usart1_pins(unsigned pins)
 931 {
 932         at91_set_A_periph(AT91_PIN_PC12, 1);            /* TXD1 */
 933         at91_set_A_periph(AT91_PIN_PC13, 0);            /* RXD1 */
 934
 935         if (pins & ATMEL_UART_RTS)
 936                 at91_set_B_periph(AT91_PIN_PA12, 0);    /* RTS1 */
 937         if (pins & ATMEL_UART_CTS)
 938                 at91_set_B_periph(AT91_PIN_PA13, 0);    /* CTS1 */
 939 }
 940
 941 static struct resource uart2_resources[] = {
 942         [0] = {
 943                 .start  = AT91SAM9261_BASE_US2,
 944                 .end    = AT91SAM9261_BASE_US2 + SZ_16K - 1,
 945                 .flags  = IORESOURCE_MEM,
 946         },
 947         [1] = {
 948                 .start  = AT91SAM9261_ID_US2,
 949                 .end    = AT91SAM9261_ID_US2,
 950                 .flags  = IORESOURCE_IRQ,
 951         },
 952 };
 953
 954 static struct atmel_uart_data uart2_data = {
 955         .use_dma_tx     = 1,
 956         .use_dma_rx     = 1,
 957 };
 958
 959 static u64 uart2_dmamask = DMA_BIT_MASK(32);
 960
 961 static struct platform_device at91sam9261_uart2_device = {
 962         .name           = "atmel_usart",
 963         .id             = 3,
 964         .dev            = {
 965                                 .dma_mask               = &uart2_dmamask,
 966                                 .coherent_dma_mask      = DMA_BIT_MASK(32),
 967                                 .platform_data          = &uart2_data,
 968         },
 969         .resource       = uart2_resources,
 970         .num_resources  = ARRAY_SIZE(uart2_resources),
 971 };
 972
 973 static inline void configure_usart2_pins(unsigned pins)
 974 {
 975         at91_set_A_periph(AT91_PIN_PC15, 0);            /* RXD2 */
 976         at91_set_A_periph(AT91_PIN_PC14, 1);            /* TXD2 */
 977
 978         if (pins & ATMEL_UART_RTS)
 979                 at91_set_B_periph(AT91_PIN_PA15, 0);    /* RTS2*/
 980         if (pins & ATMEL_UART_CTS)
 981                 at91_set_B_periph(AT91_PIN_PA16, 0);    /* CTS2 */
 982 }
 983
 984 static struct platform_device *__initdata at91_uarts[ATMEL_MAX_UART];   /* the UARTs to use */
 985 struct platform_device *atmel_default_console_device;   /* the serial console device */
 986
 987 void __init at91_register_uart(unsigned id, unsigned portnr, unsigned pins)
 988 {
 989         struct platform_device *pdev;
 990         struct atmel_uart_data *pdata;
 991
 992         switch (id) {
 993                 case 0:         /* DBGU */
 994                         pdev = &at91sam9261_dbgu_device;
 995                         configure_dbgu_pins();
 996                         break;
 997                 case AT91SAM9261_ID_US0:
 998                         pdev = &at91sam9261_uart0_device;
 999                         configure_usart0_pins(pins);
1000                         break;
1001                 case AT91SAM9261_ID_US1:
1002                         pdev = &at91sam9261_uart1_device;
1003                         configure_usart1_pins(pins);
1004                         break;
1005                 case AT91SAM9261_ID_US2:
1006                         pdev = &at91sam9261_uart2_device;
1007                         configure_usart2_pins(pins);
1008                         break;
1009                 default:
1010                         return;
1011         }
1012         pdata = pdev->dev.platform_data;
1013         pdata->num = portnr;            /* update to mapped ID */
1014
1015         if (portnr < ATMEL_MAX_UART)
1016                 at91_uarts[portnr] = pdev;
1017 }
1018
1019 void __init at91_set_serial_console(unsigned portnr)
1020 {
1021         if (portnr < ATMEL_MAX_UART) {
1022                 atmel_default_console_device = at91_uarts[portnr];
1023                 at91sam9261_set_console_clock(at91_uarts[portnr]->id);
1024         }
1025 }
1026
1027 void __init at91_add_device_serial(void)
1028 {
1029         int i;
1030
1031         for (i = 0; i < ATMEL_MAX_UART; i++) {
1032                 if (at91_uarts[i])
1033                         platform_device_register(at91_uarts[i]);
1034         }
1035
1036         if (!atmel_default_console_device)
1037                 printk(KERN_INFO "AT91: No default serial console defined.\n");
1038 }
1039 #else
1040 void __init at91_register_uart(unsigned id, unsigned portnr, unsigned pins) {}
1041 void __init at91_set_serial_console(unsigned portnr) {}
1042 void __init at91_add_device_serial(void) {}
1043 #endif
1044
1045
1046 /* -------------------------------------------------------------------- */
1047
1048 /*
1049  * These devices are always present and don't need any board-specific
1050  * setup.
1051  */
1052 static int __init at91_add_standard_devices(void)
1053 {
1054         at91_add_device_rtt();
1055         at91_add_device_watchdog();
1056         at91_add_device_tc();
1057         return 0;
1058 }
1059
1060 arch_initcall(at91_add_standard_devices);