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