arch/blackfin/mach-bf533/boards/blackstamp.c

   1 /*
   2  * Board Info File for the BlackStamp
   3  *
   4  * Copyright 2004-2008 Analog Devices Inc.
   5  *                2008 Benjamin Matthews <bmat@lle.rochester.edu>
   6  *                2005 National ICT Australia (NICTA)
   7  *                      Aidan Williams <aidan@nicta.com.au>
   8  *
   9  * More info about the BlackStamp at:
  10  *      http://blackfin.uclinux.org/gf/project/blackstamp/
  11  *
  12  * Licensed under the GPL-2 or later.
  13  */
  14
  15 #include <linux/device.h>
  16 #include <linux/platform_device.h>
  17 #include <linux/mtd/mtd.h>
  18 #include <linux/mtd/partitions.h>
  19 #include <linux/mtd/physmap.h>
  20 #include <linux/spi/spi.h>
  21 #include <linux/spi/flash.h>
  22 #include <linux/irq.h>
  23 #include <linux/gpio.h>
  24 #include <linux/i2c.h>
  25 #include <linux/gpio/machine.h>
  26 #include <asm/dma.h>
  27 #include <asm/bfin5xx_spi.h>
  28 #include <asm/portmux.h>
  29 #include <asm/dpmc.h>
  30
  31 /*
  32  * Name the Board for the /proc/cpuinfo
  33  */
  34 const char bfin_board_name[] = "BlackStamp";
  35
  36 #if IS_ENABLED(CONFIG_RTC_DRV_BFIN)
  37 static struct platform_device rtc_device = {
  38         .name = "rtc-bfin",
  39         .id   = -1,
  40 };
  41 #endif
  42
  43 /*
  44  *  Driver needs to know address, irq and flag pin.
  45  */
  46 #if IS_ENABLED(CONFIG_SMC91X)
  47 #include <linux/smc91x.h>
  48
  49 static struct smc91x_platdata smc91x_info = {
  50         .flags = SMC91X_USE_16BIT | SMC91X_NOWAIT,
  51         .leda = RPC_LED_100_10,
  52         .ledb = RPC_LED_TX_RX,
  53 };
  54
  55 static struct resource smc91x_resources[] = {
  56         {
  57                 .name = "smc91x-regs",
  58                 .start = 0x20300300,
  59                 .end = 0x20300300 + 16,
  60                 .flags = IORESOURCE_MEM,
  61         }, {
  62                 .start = IRQ_PF3,
  63                 .end = IRQ_PF3,
  64                 .flags = IORESOURCE_IRQ | IORESOURCE_IRQ_HIGHLEVEL,
  65         },
  66 };
  67
  68 static struct platform_device smc91x_device = {
  69         .name = "smc91x",
  70         .id = 0,
  71         .num_resources = ARRAY_SIZE(smc91x_resources),
  72         .resource = smc91x_resources,
  73         .dev    = {
  74                 .platform_data  = &smc91x_info,
  75         },
  76 };
  77 #endif
  78
  79 #if IS_ENABLED(CONFIG_MTD_M25P80)
  80 static struct mtd_partition bfin_spi_flash_partitions[] = {
  81         {
  82                 .name = "bootloader(spi)",
  83                 .size = 0x00040000,
  84                 .offset = 0,
  85                 .mask_flags = MTD_CAP_ROM
  86         }, {
  87                 .name = "linux kernel(spi)",
  88                 .size = 0x180000,
  89                 .offset = MTDPART_OFS_APPEND,
  90         }, {
  91                 .name = "file system(spi)",
  92                 .size = MTDPART_SIZ_FULL,
  93                 .offset = MTDPART_OFS_APPEND,
  94         }
  95 };
  96
  97 static struct flash_platform_data bfin_spi_flash_data = {
  98         .name = "m25p80",
  99         .parts = bfin_spi_flash_partitions,
 100         .nr_parts = ARRAY_SIZE(bfin_spi_flash_partitions),
 101         .type = "m25p64",
 102 };
 103
 104 /* SPI flash chip (m25p64) */
 105 static struct bfin5xx_spi_chip spi_flash_chip_info = {
 106         .enable_dma = 0,         /* use dma transfer with this chip*/
 107 };
 108 #endif
 109
 110 #if IS_ENABLED(CONFIG_MMC_SPI)
 111 static struct bfin5xx_spi_chip mmc_spi_chip_info = {
 112         .enable_dma = 0,
 113 };
 114 #endif
 115
 116 static struct spi_board_info bfin_spi_board_info[] __initdata = {
 117 #if IS_ENABLED(CONFIG_MTD_M25P80)
 118         {
 119                 /* the modalias must be the same as spi device driver name */
 120                 .modalias = "m25p80", /* Name of spi_driver for this device */
 121                 .max_speed_hz = 20000000,     /* max spi clock (SCK) speed in HZ */
 122                 .bus_num = 0, /* Framework bus number */
 123                 .chip_select = 2, /* Framework chip select. */
 124                 .platform_data = &bfin_spi_flash_data,
 125                 .controller_data = &spi_flash_chip_info,
 126                 .mode = SPI_MODE_3,
 127         },
 128 #endif
 129
 130 #if IS_ENABLED(CONFIG_MMC_SPI)
 131         {
 132                 .modalias = "mmc_spi",
 133                 .max_speed_hz = 20000000,     /* max spi clock (SCK) speed in HZ */
 134                 .bus_num = 0,
 135                 .chip_select = 5,
 136                 .controller_data = &mmc_spi_chip_info,
 137                 .mode = SPI_MODE_3,
 138         },
 139 #endif
 140
 141 #if IS_ENABLED(CONFIG_SPI_SPIDEV)
 142         {
 143                 .modalias = "spidev",
 144                 .max_speed_hz = 3125000,     /* max spi clock (SCK) speed in HZ */
 145                 .bus_num = 0,
 146                 .chip_select = 7,
 147         },
 148 #endif
 149 };
 150
 151 #if IS_ENABLED(CONFIG_SPI_BFIN5XX)
 152 /* SPI (0) */
 153 static struct resource bfin_spi0_resource[] = {
 154         [0] = {
 155                 .start = SPI0_REGBASE,
 156                 .end   = SPI0_REGBASE + 0xFF,
 157                 .flags = IORESOURCE_MEM,
 158         },
 159         [1] = {
 160                 .start = CH_SPI,
 161                 .end   = CH_SPI,
 162                 .flags = IORESOURCE_DMA,
 163         },
 164         [2] = {
 165                 .start = IRQ_SPI,
 166                 .end   = IRQ_SPI,
 167                 .flags = IORESOURCE_IRQ,
 168         }
 169 };
 170
 171 /* SPI controller data */
 172 static struct bfin5xx_spi_master bfin_spi0_info = {
 173         .num_chipselect = 8,
 174         .enable_dma = 1,  /* master has the ability to do dma transfer */
 175         .pin_req = {P_SPI0_SCK, P_SPI0_MISO, P_SPI0_MOSI, 0},
 176 };
 177
 178 static struct platform_device bfin_spi0_device = {
 179         .name = "bfin-spi",
 180         .id = 0, /* Bus number */
 181         .num_resources = ARRAY_SIZE(bfin_spi0_resource),
 182         .resource = bfin_spi0_resource,
 183         .dev = {
 184                 .platform_data = &bfin_spi0_info, /* Passed to driver */
 185         },
 186 };
 187 #endif  /* spi master and devices */
 188
 189 #if IS_ENABLED(CONFIG_SERIAL_BFIN)
 190 #ifdef CONFIG_SERIAL_BFIN_UART0
 191 static struct resource bfin_uart0_resources[] = {
 192         {
 193                 .start = BFIN_UART_THR,
 194                 .end = BFIN_UART_GCTL+2,
 195                 .flags = IORESOURCE_MEM,
 196         },
 197         {
 198                 .start = IRQ_UART0_TX,
 199                 .end = IRQ_UART0_TX,
 200                 .flags = IORESOURCE_IRQ,
 201         },
 202         {
 203                 .start = IRQ_UART0_RX,
 204                 .end = IRQ_UART0_RX,
 205                 .flags = IORESOURCE_IRQ,
 206         },
 207         {
 208                 .start = IRQ_UART0_ERROR,
 209                 .end = IRQ_UART0_ERROR,
 210                 .flags = IORESOURCE_IRQ,
 211         },
 212         {
 213                 .start = CH_UART0_TX,
 214                 .end = CH_UART0_TX,
 215                 .flags = IORESOURCE_DMA,
 216         },
 217         {
 218                 .start = CH_UART0_RX,
 219                 .end = CH_UART0_RX,
 220                 .flags = IORESOURCE_DMA,
 221         },
 222 };
 223
 224 static unsigned short bfin_uart0_peripherals[] = {
 225         P_UART0_TX, P_UART0_RX, 0
 226 };
 227
 228 static struct platform_device bfin_uart0_device = {
 229         .name = "bfin-uart",
 230         .id = 0,
 231         .num_resources = ARRAY_SIZE(bfin_uart0_resources),
 232         .resource = bfin_uart0_resources,
 233         .dev = {
 234                 .platform_data = &bfin_uart0_peripherals, /* Passed to driver */
 235         },
 236 };
 237 #endif
 238 #endif
 239
 240 #if IS_ENABLED(CONFIG_BFIN_SIR)
 241 #ifdef CONFIG_BFIN_SIR0
 242 static struct resource bfin_sir0_resources[] = {
 243         {
 244                 .start = 0xFFC00400,
 245                 .end = 0xFFC004FF,
 246                 .flags = IORESOURCE_MEM,
 247         },
 248         {
 249                 .start = IRQ_UART0_RX,
 250                 .end = IRQ_UART0_RX+1,
 251                 .flags = IORESOURCE_IRQ,
 252         },
 253         {
 254                 .start = CH_UART0_RX,
 255                 .end = CH_UART0_RX+1,
 256                 .flags = IORESOURCE_DMA,
 257         },
 258 };
 259
 260 static struct platform_device bfin_sir0_device = {
 261         .name = "bfin_sir",
 262         .id = 0,
 263         .num_resources = ARRAY_SIZE(bfin_sir0_resources),
 264         .resource = bfin_sir0_resources,
 265 };
 266 #endif
 267 #endif
 268
 269 #if IS_ENABLED(CONFIG_SERIAL_BFIN_SPORT)
 270 #ifdef CONFIG_SERIAL_BFIN_SPORT0_UART
 271 static struct resource bfin_sport0_uart_resources[] = {
 272         {
 273                 .start = SPORT0_TCR1,
 274                 .end = SPORT0_MRCS3+4,
 275                 .flags = IORESOURCE_MEM,
 276         },
 277         {
 278                 .start = IRQ_SPORT0_RX,
 279                 .end = IRQ_SPORT0_RX+1,
 280                 .flags = IORESOURCE_IRQ,
 281         },
 282         {
 283                 .start = IRQ_SPORT0_ERROR,
 284                 .end = IRQ_SPORT0_ERROR,
 285                 .flags = IORESOURCE_IRQ,
 286         },
 287 };
 288
 289 static unsigned short bfin_sport0_peripherals[] = {
 290         P_SPORT0_TFS, P_SPORT0_DTPRI, P_SPORT0_TSCLK, P_SPORT0_RFS,
 291         P_SPORT0_DRPRI, P_SPORT0_RSCLK, 0
 292 };
 293
 294 static struct platform_device bfin_sport0_uart_device = {
 295         .name = "bfin-sport-uart",
 296         .id = 0,
 297         .num_resources = ARRAY_SIZE(bfin_sport0_uart_resources),
 298         .resource = bfin_sport0_uart_resources,
 299         .dev = {
 300                 .platform_data = &bfin_sport0_peripherals, /* Passed to driver */
 301         },
 302 };
 303 #endif
 304 #ifdef CONFIG_SERIAL_BFIN_SPORT1_UART
 305 static struct resource bfin_sport1_uart_resources[] = {
 306         {
 307                 .start = SPORT1_TCR1,
 308                 .end = SPORT1_MRCS3+4,
 309                 .flags = IORESOURCE_MEM,
 310         },
 311         {
 312                 .start = IRQ_SPORT1_RX,
 313                 .end = IRQ_SPORT1_RX+1,
 314                 .flags = IORESOURCE_IRQ,
 315         },
 316         {
 317                 .start = IRQ_SPORT1_ERROR,
 318                 .end = IRQ_SPORT1_ERROR,
 319                 .flags = IORESOURCE_IRQ,
 320         },
 321 };
 322
 323 static unsigned short bfin_sport1_peripherals[] = {
 324         P_SPORT1_TFS, P_SPORT1_DTPRI, P_SPORT1_TSCLK, P_SPORT1_RFS,
 325         P_SPORT1_DRPRI, P_SPORT1_RSCLK, 0
 326 };
 327
 328 static struct platform_device bfin_sport1_uart_device = {
 329         .name = "bfin-sport-uart",
 330         .id = 1,
 331         .num_resources = ARRAY_SIZE(bfin_sport1_uart_resources),
 332         .resource = bfin_sport1_uart_resources,
 333         .dev = {
 334                 .platform_data = &bfin_sport1_peripherals, /* Passed to driver */
 335         },
 336 };
 337 #endif
 338 #endif
 339
 340 #if IS_ENABLED(CONFIG_KEYBOARD_GPIO)
 341 #include <linux/input.h>
 342 #include <linux/gpio_keys.h>
 343
 344 static struct gpio_keys_button bfin_gpio_keys_table[] = {
 345         {BTN_0, GPIO_PF4, 0, "gpio-keys: BTN0"},
 346         {BTN_1, GPIO_PF5, 0, "gpio-keys: BTN1"},
 347         {BTN_2, GPIO_PF6, 0, "gpio-keys: BTN2"},
 348 }; /* Mapped to the first three PF Test Points */
 349
 350 static struct gpio_keys_platform_data bfin_gpio_keys_data = {
 351         .buttons        = bfin_gpio_keys_table,
 352         .nbuttons       = ARRAY_SIZE(bfin_gpio_keys_table),
 353 };
 354
 355 static struct platform_device bfin_device_gpiokeys = {
 356         .name      = "gpio-keys",
 357         .dev = {
 358                 .platform_data = &bfin_gpio_keys_data,
 359         },
 360 };
 361 #endif
 362
 363 #if IS_ENABLED(CONFIG_I2C_GPIO)
 364 #include <linux/i2c-gpio.h>
 365
 366 static struct gpiod_lookup_table bfin_i2c_gpiod_table = {
 367         .dev_id = "i2c-gpio",
 368         .table = {
 369                 GPIO_LOOKUP_IDX("BFIN-GPIO", GPIO_PF8, NULL, 0,
 370                                 GPIO_ACTIVE_HIGH | GPIO_OPEN_DRAIN),
 371                 GPIO_LOOKUP_IDX("BFIN-GPIO", GPIO_PF9, NULL, 1,
 372                                 GPIO_ACTIVE_HIGH | GPIO_OPEN_DRAIN),
 373         },
 374 };
 375
 376 static struct i2c_gpio_platform_data i2c_gpio_data = {
 377         .udelay                 = 40,
 378 }; /* This hasn't actually been used these pins
 379     * are (currently) free pins on the expansion connector */
 380
 381 static struct platform_device i2c_gpio_device = {
 382         .name           = "i2c-gpio",
 383         .id             = 0,
 384         .dev            = {
 385                 .platform_data  = &i2c_gpio_data,
 386         },
 387 };
 388 #endif
 389
 390 static struct i2c_board_info __initdata bfin_i2c_board_info[] = {
 391 };
 392
 393 static const unsigned int cclk_vlev_datasheet[] =
 394 {
 395         VRPAIR(VLEV_085, 250000000),
 396         VRPAIR(VLEV_090, 376000000),
 397         VRPAIR(VLEV_095, 426000000),
 398         VRPAIR(VLEV_100, 426000000),
 399         VRPAIR(VLEV_105, 476000000),
 400         VRPAIR(VLEV_110, 476000000),
 401         VRPAIR(VLEV_115, 476000000),
 402         VRPAIR(VLEV_120, 600000000),
 403         VRPAIR(VLEV_125, 600000000),
 404         VRPAIR(VLEV_130, 600000000),
 405 };
 406
 407 static struct bfin_dpmc_platform_data bfin_dmpc_vreg_data = {
 408         .tuple_tab = cclk_vlev_datasheet,
 409         .tabsize = ARRAY_SIZE(cclk_vlev_datasheet),
 410         .vr_settling_time = 25 /* us */,
 411 };
 412
 413 static struct platform_device bfin_dpmc = {
 414         .name = "bfin dpmc",
 415         .dev = {
 416                 .platform_data = &bfin_dmpc_vreg_data,
 417         },
 418 };
 419
 420 static struct platform_device *stamp_devices[] __initdata = {
 421
 422         &bfin_dpmc,
 423
 424 #if IS_ENABLED(CONFIG_RTC_DRV_BFIN)
 425         &rtc_device,
 426 #endif
 427
 428 #if IS_ENABLED(CONFIG_SMC91X)
 429         &smc91x_device,
 430 #endif
 431
 432
 433 #if IS_ENABLED(CONFIG_SPI_BFIN5XX)
 434         &bfin_spi0_device,
 435 #endif
 436
 437 #if IS_ENABLED(CONFIG_SERIAL_BFIN)
 438 #ifdef CONFIG_SERIAL_BFIN_UART0
 439         &bfin_uart0_device,
 440 #endif
 441 #endif
 442
 443 #if IS_ENABLED(CONFIG_BFIN_SIR)
 444 #ifdef CONFIG_BFIN_SIR0
 445         &bfin_sir0_device,
 446 #endif
 447 #endif
 448
 449 #if IS_ENABLED(CONFIG_SERIAL_BFIN_SPORT)
 450 #ifdef CONFIG_SERIAL_BFIN_SPORT0_UART
 451         &bfin_sport0_uart_device,
 452 #endif
 453 #ifdef CONFIG_SERIAL_BFIN_SPORT1_UART
 454         &bfin_sport1_uart_device,
 455 #endif
 456 #endif
 457
 458 #if IS_ENABLED(CONFIG_KEYBOARD_GPIO)
 459         &bfin_device_gpiokeys,
 460 #endif
 461
 462 #if IS_ENABLED(CONFIG_I2C_GPIO)
 463         &i2c_gpio_device,
 464 #endif
 465 };
 466
 467 static int __init blackstamp_init(void)
 468 {
 469         int ret;
 470
 471         printk(KERN_INFO "%s(): registering device resources\n", __func__);
 472 #if IS_ENABLED(CONFIG_I2C_GPIO)
 473         gpiod_add_lookup_table(&bfin_i2c_gpiod_table);
 474 #endif
 475         i2c_register_board_info(0, bfin_i2c_board_info,
 476                                 ARRAY_SIZE(bfin_i2c_board_info));
 477
 478         ret = platform_add_devices(stamp_devices, ARRAY_SIZE(stamp_devices));
 479         if (ret < 0)
 480                 return ret;
 481
 482 #if IS_ENABLED(CONFIG_SMC91X)
 483         /*
 484          * setup BF533_STAMP CPLD to route AMS3 to Ethernet MAC.
 485          * the bfin-async-map driver takes care of flipping between
 486          * flash and ethernet when necessary.
 487          */
 488         ret = gpio_request(GPIO_PF0, "enet_cpld");
 489         if (!ret) {
 490                 gpio_direction_output(GPIO_PF0, 1);
 491                 gpio_free(GPIO_PF0);
 492         }
 493 #endif
 494
 495         spi_register_board_info(bfin_spi_board_info, ARRAY_SIZE(bfin_spi_board_info));
 496         return 0;
 497 }
 498
 499 arch_initcall(blackstamp_init);
 500
 501 static struct platform_device *stamp_early_devices[] __initdata = {
 502 #if defined(CONFIG_SERIAL_BFIN_CONSOLE) || defined(CONFIG_EARLY_PRINTK)
 503 #ifdef CONFIG_SERIAL_BFIN_UART0
 504         &bfin_uart0_device,
 505 #endif
 506 #endif
 507
 508 #if defined(CONFIG_SERIAL_BFIN_SPORT_CONSOLE)
 509 #ifdef CONFIG_SERIAL_BFIN_SPORT0_UART
 510         &bfin_sport0_uart_device,
 511 #endif
 512 #ifdef CONFIG_SERIAL_BFIN_SPORT1_UART
 513         &bfin_sport1_uart_device,
 514 #endif
 515 #endif
 516 };
 517
 518 void __init native_machine_early_platform_add_devices(void)
 519 {
 520         printk(KERN_INFO "register early platform devices\n");
 521         early_platform_add_devices(stamp_early_devices,
 522                 ARRAY_SIZE(stamp_early_devices));
 523 }