arch/arm/mach-pxa/imote2.c

   1 /*
   2  * linux/arch/arm/mach-pxa/imote2.c
   3  *
   4  * Author:      Ed C. Epp
   5  * Created:     Nov 05, 2002
   6  * Copyright:   Intel Corp.
   7  *
   8  * Modified 2008:  Jonathan Cameron
   9  *
  10  * The Imote2 is a wireless sensor node platform sold
  11  * by Crossbow (www.xbow.com).
  12  */
  13
  14 #include <linux/init.h>
  15 #include <linux/device.h>
  16 #include <linux/mtd/mtd.h>
  17 #include <linux/mtd/partitions.h>
  18 #include <linux/platform_device.h>
  19 #include <linux/regulator/machine.h>
  20 #include <linux/gpio.h>
  21 #include <linux/leds.h>
  22 #include <linux/spi/spi.h>
  23 #include <linux/i2c.h>
  24 #include <linux/mfd/da903x.h>
  25 #include <linux/sht15.h>
  26
  27 #include <asm/mach-types.h>
  28 #include <asm/mach/arch.h>
  29 #include <asm/mach/map.h>
  30 #include <asm/mach/flash.h>
  31
  32 #include <mach/pxa27x.h>
  33 #include <plat/i2c.h>
  34 #include <mach/udc.h>
  35 #include <mach/mmc.h>
  36 #include <mach/pxa2xx_spi.h>
  37 #include <mach/pxa27x-udc.h>
  38
  39 #include "devices.h"
  40 #include "generic.h"
  41
  42 static unsigned long imote2_pin_config[] __initdata = {
  43
  44         /* Device Identification for wakeup*/
  45         GPIO102_GPIO,
  46
  47         /* Button */
  48         GPIO91_GPIO,
  49
  50         /* DA9030 */
  51         GPIO1_GPIO,
  52
  53         /* MMC */
  54         GPIO32_MMC_CLK,
  55         GPIO112_MMC_CMD,
  56         GPIO92_MMC_DAT_0,
  57         GPIO109_MMC_DAT_1,
  58         GPIO110_MMC_DAT_2,
  59         GPIO111_MMC_DAT_3,
  60
  61         /* 802.15.4 radio - driver out of mainline */
  62         GPIO22_GPIO,                    /* CC_RSTN */
  63         GPIO114_GPIO,                   /* CC_FIFO */
  64         GPIO116_GPIO,                   /* CC_CCA */
  65         GPIO0_GPIO,                     /* CC_FIFOP */
  66         GPIO16_GPIO,                    /* CCSFD */
  67         GPIO39_GPIO,                    /* CSn */
  68         GPIO115_GPIO,                   /* Power enable */
  69
  70         /* I2C */
  71         GPIO117_I2C_SCL,
  72         GPIO118_I2C_SDA,
  73
  74         /* SSP 3 - 802.15.4 radio */
  75         GPIO39_GPIO,                    /* Chip Select */
  76         GPIO34_SSP3_SCLK,
  77         GPIO35_SSP3_TXD,
  78         GPIO41_SSP3_RXD,
  79
  80         /* SSP 2 - to daughter boards */
  81         GPIO37_GPIO,                    /* Chip Select */
  82         GPIO36_SSP2_SCLK,
  83         GPIO38_SSP2_TXD,
  84         GPIO11_SSP2_RXD,
  85
  86         /* SSP 1 - to daughter boards */
  87         GPIO24_GPIO,                    /* Chip Select */
  88         GPIO23_SSP1_SCLK,
  89         GPIO25_SSP1_TXD,
  90         GPIO26_SSP1_RXD,
  91
  92         /* BTUART Basic Connector*/
  93         GPIO42_BTUART_RXD,
  94         GPIO43_BTUART_TXD,
  95         GPIO44_BTUART_CTS,
  96         GPIO45_BTUART_RTS,
  97
  98         /* STUART Serial console via debug board*/
  99         GPIO46_STUART_RXD,
 100         GPIO47_STUART_TXD,
 101
 102         /* Basic sensor board */
 103         GPIO96_GPIO,    /* accelerometer interrupt */
 104         GPIO99_GPIO,    /* ADC interrupt */
 105
 106         /* SHT15 */
 107         GPIO100_GPIO,
 108         GPIO98_GPIO,
 109
 110         /* Connector pins specified as gpios */
 111         GPIO94_GPIO, /* large basic connector pin 14 */
 112         GPIO10_GPIO, /* large basic connector pin 23 */
 113
 114         /* LEDS */
 115         GPIO103_GPIO, /* red led */
 116         GPIO104_GPIO, /* green led */
 117         GPIO105_GPIO, /* blue led */
 118 };
 119
 120 static struct sht15_platform_data platform_data_sht15 = {
 121         .gpio_data =  100,
 122         .gpio_sck  =  98,
 123 };
 124
 125 static struct platform_device sht15 = {
 126         .name = "sht15",
 127         .id = -1,
 128         .dev = {
 129                 .platform_data = &platform_data_sht15,
 130         },
 131 };
 132
 133 static struct regulator_consumer_supply imote2_sensor_3_con[] = {
 134         {
 135                 .dev = &sht15.dev,
 136                 .supply = "vcc",
 137         },
 138 };
 139
 140 static struct gpio_led imote2_led_pins[] = {
 141         {
 142                 .name       =  "imote2:red",
 143                 .gpio       = 103,
 144                 .active_low = 1,
 145         }, {
 146                 .name       = "imote2:green",
 147                 .gpio       = 104,
 148                 .active_low = 1,
 149         }, {
 150                 .name       = "imote2:blue",
 151                 .gpio       = 105,
 152                 .active_low = 1,
 153         },
 154 };
 155
 156 static struct gpio_led_platform_data imote2_led_data = {
 157         .num_leds = ARRAY_SIZE(imote2_led_pins),
 158         .leds     = imote2_led_pins,
 159 };
 160
 161 static struct platform_device imote2_leds = {
 162         .name = "leds-gpio",
 163         .id   = -1,
 164         .dev = {
 165                 .platform_data = &imote2_led_data,
 166         },
 167 };
 168
 169 /* Reverse engineered partly from Platformx drivers */
 170 enum imote2_ldos{
 171         vcc_vref,
 172         vcc_cc2420,
 173         vcc_mica,
 174         vcc_bt,
 175         /* The two voltages available to sensor boards */
 176         vcc_sensor_1_8,
 177         vcc_sensor_3,
 178
 179         vcc_sram_ext, /* directly connected to the pxa271 */
 180         vcc_pxa_pll,
 181         vcc_pxa_usim, /* Reference voltage for certain gpios */
 182         vcc_pxa_mem,
 183         vcc_pxa_flash,
 184         vcc_pxa_core, /*Dc-Dc buck not yet supported */
 185         vcc_lcd,
 186         vcc_bb,
 187         vcc_bbio,
 188         vcc_io, /* cc2420 802.15.4 radio and pxa vcc_io ?*/
 189 };
 190
 191 /* The values of the various regulator constraints are obviously dependent
 192  * on exactly what is wired to each ldo.  Unfortunately this information is
 193  * not generally available.  More information has been requested from Xbow
 194  * but as of yet they haven't been forthcoming.
 195  *
 196  * Some of these are clearly Stargate 2 related (no way of plugging
 197  * in an lcd on the IM2 for example!).
 198  */
 199 static struct regulator_init_data imote2_ldo_init_data[] = {
 200         [vcc_bbio] = {
 201                 .constraints = { /* board default 1.8V */
 202                         .name = "vcc_bbio",
 203                         .min_uV = 1800000,
 204                         .max_uV = 1800000,
 205                 },
 206         },
 207         [vcc_bb] = {
 208                 .constraints = { /* board default 2.8V */
 209                         .name = "vcc_bb",
 210                         .min_uV = 2700000,
 211                         .max_uV = 3000000,
 212                 },
 213         },
 214         [vcc_pxa_flash] = {
 215                 .constraints = {/* default is 1.8V */
 216                         .name = "vcc_pxa_flash",
 217                         .min_uV = 1800000,
 218                         .max_uV = 1800000,
 219                 },
 220         },
 221         [vcc_cc2420] = { /* also vcc_io */
 222                 .constraints = {
 223                         /* board default is 2.8V */
 224                         .name = "vcc_cc2420",
 225                         .min_uV = 2700000,
 226                         .max_uV = 3300000,
 227                 },
 228         },
 229         [vcc_vref] = { /* Reference for what? */
 230                 .constraints = { /* default 1.8V */
 231                         .name = "vcc_vref",
 232                         .min_uV = 1800000,
 233                         .max_uV = 1800000,
 234                 },
 235         },
 236         [vcc_sram_ext] = {
 237                 .constraints = { /* default 2.8V */
 238                         .name = "vcc_sram_ext",
 239                         .min_uV = 2800000,
 240                         .max_uV = 2800000,
 241                 },
 242         },
 243         [vcc_mica] = {
 244                 .constraints = { /* default 2.8V */
 245                         .name = "vcc_mica",
 246                         .min_uV = 2800000,
 247                         .max_uV = 2800000,
 248                 },
 249         },
 250         [vcc_bt] = {
 251                 .constraints = { /* default 2.8V */
 252                         .name = "vcc_bt",
 253                         .min_uV = 2800000,
 254                         .max_uV = 2800000,
 255                 },
 256         },
 257         [vcc_lcd] = {
 258                 .constraints = { /* default 2.8V */
 259                         .name = "vcc_lcd",
 260                         .min_uV = 2700000,
 261                         .max_uV = 3300000,
 262                 },
 263         },
 264         [vcc_io] = { /* Same or higher than everything
 265                           * bar vccbat and vccusb */
 266                 .constraints = { /* default 2.8V */
 267                         .name = "vcc_io",
 268                         .min_uV = 2692000,
 269                         .max_uV = 3300000,
 270                 },
 271         },
 272         [vcc_sensor_1_8] = {
 273                 .constraints = { /* default 1.8V */
 274                         .name = "vcc_sensor_1_8",
 275                         .min_uV = 1800000,
 276                         .max_uV = 1800000,
 277                 },
 278         },
 279         [vcc_sensor_3] = { /* curiously default 2.8V */
 280                 .constraints = {
 281                         .name = "vcc_sensor_3",
 282                         .min_uV = 2800000,
 283                         .max_uV = 3000000,
 284                 },
 285                 .num_consumer_supplies = ARRAY_SIZE(imote2_sensor_3_con),
 286                 .consumer_supplies = imote2_sensor_3_con,
 287         },
 288         [vcc_pxa_pll] = { /* 1.17V - 1.43V, default 1.3V*/
 289                 .constraints = {
 290                         .name = "vcc_pxa_pll",
 291                         .min_uV = 1170000,
 292                         .max_uV = 1430000,
 293                 },
 294         },
 295         [vcc_pxa_usim] = {
 296                 .constraints = { /* default 1.8V */
 297                         .name = "vcc_pxa_usim",
 298                         .min_uV = 1710000,
 299                         .max_uV = 2160000,
 300                 },
 301         },
 302         [vcc_pxa_mem] = {
 303                 .constraints = { /* default 1.8V */
 304                         .name = "vcc_pxa_mem",
 305                         .min_uV = 1800000,
 306                         .max_uV = 1800000,
 307                 },
 308         },
 309 };
 310
 311 static struct da903x_subdev_info imote2_da9030_subdevs[] = {
 312         {
 313                 .name = "da903x-regulator",
 314                 .id = DA9030_ID_LDO2,
 315                 .platform_data = &imote2_ldo_init_data[vcc_bbio],
 316         }, {
 317                 .name = "da903x-regulator",
 318                 .id = DA9030_ID_LDO3,
 319                 .platform_data = &imote2_ldo_init_data[vcc_bb],
 320         }, {
 321                 .name = "da903x-regulator",
 322                 .id = DA9030_ID_LDO4,
 323                 .platform_data = &imote2_ldo_init_data[vcc_pxa_flash],
 324         }, {
 325                 .name = "da903x-regulator",
 326                 .id = DA9030_ID_LDO5,
 327                 .platform_data = &imote2_ldo_init_data[vcc_cc2420],
 328         }, {
 329                 .name = "da903x-regulator",
 330                 .id = DA9030_ID_LDO6,
 331                 .platform_data = &imote2_ldo_init_data[vcc_vref],
 332         }, {
 333                 .name = "da903x-regulator",
 334                 .id = DA9030_ID_LDO7,
 335                 .platform_data = &imote2_ldo_init_data[vcc_sram_ext],
 336         }, {
 337                 .name = "da903x-regulator",
 338                 .id = DA9030_ID_LDO8,
 339                 .platform_data = &imote2_ldo_init_data[vcc_mica],
 340         }, {
 341                 .name = "da903x-regulator",
 342                 .id = DA9030_ID_LDO9,
 343                 .platform_data = &imote2_ldo_init_data[vcc_bt],
 344         }, {
 345                 .name = "da903x-regulator",
 346                 .id = DA9030_ID_LDO10,
 347                 .platform_data = &imote2_ldo_init_data[vcc_sensor_1_8],
 348         }, {
 349                 .name = "da903x-regulator",
 350                 .id = DA9030_ID_LDO11,
 351                 .platform_data = &imote2_ldo_init_data[vcc_sensor_3],
 352         }, {
 353                 .name = "da903x-regulator",
 354                 .id = DA9030_ID_LDO12,
 355                 .platform_data = &imote2_ldo_init_data[vcc_lcd],
 356         }, {
 357                 .name = "da903x-regulator",
 358                 .id = DA9030_ID_LDO15,
 359                 .platform_data = &imote2_ldo_init_data[vcc_pxa_pll],
 360         }, {
 361                 .name = "da903x-regulator",
 362                 .id = DA9030_ID_LDO17,
 363                 .platform_data = &imote2_ldo_init_data[vcc_pxa_usim],
 364         }, {
 365                 .name = "da903x-regulator",
 366                 .id = DA9030_ID_LDO18,
 367                 .platform_data = &imote2_ldo_init_data[vcc_io],
 368         }, {
 369                 .name = "da903x-regulator",
 370                 .id = DA9030_ID_LDO19,
 371                 .platform_data = &imote2_ldo_init_data[vcc_pxa_mem],
 372         },
 373 };
 374
 375 static struct da903x_platform_data imote2_da9030_pdata = {
 376         .num_subdevs = ARRAY_SIZE(imote2_da9030_subdevs),
 377         .subdevs = imote2_da9030_subdevs,
 378 };
 379
 380 /* As the the imote2 doesn't currently have a conventional SD slot
 381  * there is no option to hotplug cards, making all this rather simple
 382  */
 383 static int imote2_mci_get_ro(struct device *dev)
 384 {
 385         return 0;
 386 }
 387
 388 /* Rather simple case as hotplugging not possible */
 389 static struct pxamci_platform_data imote2_mci_platform_data = {
 390         .ocr_mask = MMC_VDD_32_33 | MMC_VDD_33_34, /* default anyway */
 391         .get_ro = imote2_mci_get_ro,
 392 };
 393
 394 static struct mtd_partition imote2flash_partitions[] = {
 395         {
 396                 .name = "Bootloader",
 397                 .size = 0x00040000,
 398                 .offset = 0,
 399                 .mask_flags = MTD_WRITEABLE,
 400         }, {
 401                 .name = "Kernel",
 402                 .size = 0x00200000,
 403                 .offset = 0x00040000,
 404                 .mask_flags = 0,
 405         }, {
 406                 .name = "Filesystem",
 407                 .size = 0x01DC0000,
 408                 .offset = 0x00240000,
 409                 .mask_flags = 0,
 410         },
 411 };
 412
 413 static struct resource flash_resources = {
 414         .start = PXA_CS0_PHYS,
 415         .end = PXA_CS0_PHYS + SZ_32M - 1,
 416         .flags = IORESOURCE_MEM,
 417 };
 418
 419 static struct flash_platform_data imote2_flash_data = {
 420         .map_name = "cfi_probe",
 421         .parts = imote2flash_partitions,
 422         .nr_parts = ARRAY_SIZE(imote2flash_partitions),
 423         .name = "PXA27xOnChipROM",
 424         .width = 2,
 425 };
 426
 427 static struct platform_device imote2_flash_device = {
 428         .name = "pxa2xx-flash",
 429         .id = 0,
 430         .dev = {
 431                 .platform_data = &imote2_flash_data,
 432         },
 433         .resource = &flash_resources,
 434         .num_resources = 1,
 435 };
 436
 437 /* Some of the drivers here are out of kernel at the moment (parts of IIO)
 438  * and it may be a while before they are in the mainline.
 439  */
 440 static struct i2c_board_info __initdata imote2_i2c_board_info[] = {
 441         { /* UCAM sensor board */
 442                 .type = "max1238",
 443                 .addr = 0x35,
 444         }, { /* ITS400 Sensor board only */
 445                 .type = "max1363",
 446                 .addr = 0x34,
 447                 /* Through a nand gate - Also beware, on V2 sensor board the
 448                  * pull up resistors are missing.
 449                  */
 450                 .irq = IRQ_GPIO(99),
 451         }, { /* ITS400 Sensor board only */
 452                 .type = "tsl2561",
 453                 .addr = 0x49,
 454                 /* Through a nand gate - Also beware, on V2 sensor board the
 455                  * pull up resistors are missing.
 456                  */
 457                 .irq = IRQ_GPIO(99),
 458         }, { /* ITS400 Sensor board only */
 459                 .type = "tmp175",
 460                 .addr = 0x4A,
 461                 .irq = IRQ_GPIO(96),
 462         },
 463 };
 464
 465 static struct i2c_board_info __initdata imote2_pwr_i2c_board_info[] = {
 466         {
 467                 .type = "da9030",
 468                 .addr = 0x49,
 469                 .platform_data = &imote2_da9030_pdata,
 470                 .irq = gpio_to_irq(1),
 471         },
 472 };
 473
 474 static struct pxa2xx_spi_master pxa_ssp_master_0_info = {
 475         .num_chipselect = 1,
 476 };
 477
 478 static struct pxa2xx_spi_master pxa_ssp_master_1_info = {
 479         .num_chipselect = 1,
 480 };
 481
 482 static struct pxa2xx_spi_master pxa_ssp_master_2_info = {
 483         .num_chipselect = 1,
 484 };
 485
 486 static struct pxa2xx_spi_chip staccel_chip_info = {
 487         .tx_threshold = 8,
 488         .rx_threshold = 8,
 489         .dma_burst_size = 8,
 490         .timeout = 235,
 491         .gpio_cs = 24,
 492 };
 493
 494 static struct pxa2xx_spi_chip cc2420_info = {
 495         .tx_threshold = 8,
 496         .rx_threshold = 8,
 497         .dma_burst_size = 8,
 498         .timeout = 235,
 499         .gpio_cs = 39,
 500 };
 501
 502 static struct spi_board_info spi_board_info[] __initdata = {
 503         { /* Driver in IIO */
 504                 .modalias = "lis3l02dq",
 505                 .max_speed_hz = 8000000,/* 8MHz max spi frequency at 3V */
 506                 .bus_num = 1,
 507                 .chip_select = 0,
 508                 .controller_data = &staccel_chip_info,
 509                 .irq = IRQ_GPIO(96),
 510         }, { /* Driver out of kernel as it needs considerable rewriting */
 511                 .modalias = "cc2420",
 512                 .max_speed_hz = 6500000,
 513                 .bus_num = 3,
 514                 .chip_select = 0,
 515                 .controller_data = &cc2420_info,
 516         },
 517 };
 518
 519 static void im2_udc_command(int cmd)
 520 {
 521         switch (cmd) {
 522         case PXA2XX_UDC_CMD_CONNECT:
 523                 UP2OCR |=  UP2OCR_HXOE | UP2OCR_DPPUE | UP2OCR_DPPUBE;
 524                 break;
 525         case PXA2XX_UDC_CMD_DISCONNECT:
 526                 UP2OCR &= ~(UP2OCR_HXOE | UP2OCR_DPPUE | UP2OCR_DPPUBE);
 527                 break;
 528         }
 529 }
 530
 531 static struct pxa2xx_udc_mach_info imote2_udc_info __initdata = {
 532         .udc_command            = im2_udc_command,
 533 };
 534
 535 static struct platform_device *imote2_devices[] = {
 536         &imote2_flash_device,
 537         &imote2_leds,
 538         &sht15,
 539 };
 540
 541 static struct i2c_pxa_platform_data i2c_pwr_pdata = {
 542         .fast_mode = 1,
 543 };
 544
 545 static struct i2c_pxa_platform_data i2c_pdata = {
 546         .fast_mode = 1,
 547 };
 548
 549 static void __init imote2_init(void)
 550 {
 551
 552         pxa2xx_mfp_config(ARRAY_AND_SIZE(imote2_pin_config));
 553         /* SPI chip select directions - all other directions should
 554          * be handled by drivers.*/
 555         gpio_direction_output(37, 0);
 556
 557         platform_add_devices(imote2_devices, ARRAY_SIZE(imote2_devices));
 558
 559         pxa2xx_set_spi_info(1, &pxa_ssp_master_0_info);
 560         pxa2xx_set_spi_info(2, &pxa_ssp_master_1_info);
 561         pxa2xx_set_spi_info(3, &pxa_ssp_master_2_info);
 562
 563         spi_register_board_info(spi_board_info, ARRAY_SIZE(spi_board_info));
 564
 565         i2c_register_board_info(0, imote2_i2c_board_info,
 566                                 ARRAY_SIZE(imote2_i2c_board_info));
 567         i2c_register_board_info(1, imote2_pwr_i2c_board_info,
 568                                 ARRAY_SIZE(imote2_pwr_i2c_board_info));
 569
 570         pxa27x_set_i2c_power_info(&i2c_pwr_pdata);
 571         pxa_set_i2c_info(&i2c_pdata);
 572
 573         pxa_set_mci_info(&imote2_mci_platform_data);
 574         pxa_set_udc_info(&imote2_udc_info);
 575 }
 576
 577 MACHINE_START(INTELMOTE2, "IMOTE 2")
 578         .phys_io        = 0x40000000,
 579         .io_pg_offst    = (io_p2v(0x40000000) >> 18) & 0xfffc,
 580         .map_io         = pxa_map_io,
 581         .init_irq       = pxa27x_init_irq,
 582         .timer          = &pxa_timer,
 583         .init_machine   = imote2_init,
 584         .boot_params    = 0xA0000100,
 585 MACHINE_END