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         GPIO115_GPIO,                   /* Power enable */
  68
  69         /* I2C */
  70         GPIO117_I2C_SCL,
  71         GPIO118_I2C_SDA,
  72
  73         /* SSP 3 - 802.15.4 radio */
  74         GPIO39_GPIO,                    /* Chip Select */
  75         GPIO34_SSP3_SCLK,
  76         GPIO35_SSP3_TXD,
  77         GPIO41_SSP3_RXD,
  78
  79         /* SSP 2 - to daughter boards */
  80         GPIO37_GPIO,                    /* Chip Select */
  81         GPIO36_SSP2_SCLK,
  82         GPIO38_SSP2_TXD,
  83         GPIO11_SSP2_RXD,
  84
  85         /* SSP 1 - to daughter boards */
  86         GPIO24_GPIO,                    /* Chip Select */
  87         GPIO23_SSP1_SCLK,
  88         GPIO25_SSP1_TXD,
  89         GPIO26_SSP1_RXD,
  90
  91         /* BTUART Basic Connector*/
  92         GPIO42_BTUART_RXD,
  93         GPIO43_BTUART_TXD,
  94         GPIO44_BTUART_CTS,
  95         GPIO45_BTUART_RTS,
  96
  97         /* STUART Serial console via debug board*/
  98         GPIO46_STUART_RXD,
  99         GPIO47_STUART_TXD,
 100
 101         /* Basic sensor board */
 102         GPIO96_GPIO,    /* accelerometer interrupt */
 103         GPIO99_GPIO,    /* ADC interrupt */
 104
 105         /* SHT15 */
 106         GPIO100_GPIO,
 107         GPIO98_GPIO,
 108
 109         /* Connector pins specified as gpios */
 110         GPIO94_GPIO, /* large basic connector pin 14 */
 111         GPIO10_GPIO, /* large basic connector pin 23 */
 112
 113         /* LEDS */
 114         GPIO103_GPIO, /* red led */
 115         GPIO104_GPIO, /* green led */
 116         GPIO105_GPIO, /* blue led */
 117 };
 118
 119 static struct sht15_platform_data platform_data_sht15 = {
 120         .gpio_data =  100,
 121         .gpio_sck  =  98,
 122 };
 123
 124 static struct platform_device sht15 = {
 125         .name = "sht15",
 126         .id = -1,
 127         .dev = {
 128                 .platform_data = &platform_data_sht15,
 129         },
 130 };
 131
 132 static struct regulator_consumer_supply imote2_sensor_3_con[] = {
 133         {
 134                 .dev = &sht15.dev,
 135                 .supply = "vcc",
 136         },
 137 };
 138
 139 static struct gpio_led imote2_led_pins[] = {
 140         {
 141                 .name       =  "imote2:red",
 142                 .gpio       = 103,
 143                 .active_low = 1,
 144         }, {
 145                 .name       = "imote2:green",
 146                 .gpio       = 104,
 147                 .active_low = 1,
 148         }, {
 149                 .name       = "imote2:blue",
 150                 .gpio       = 105,
 151                 .active_low = 1,
 152         },
 153 };
 154
 155 static struct gpio_led_platform_data imote2_led_data = {
 156         .num_leds = ARRAY_SIZE(imote2_led_pins),
 157         .leds     = imote2_led_pins,
 158 };
 159
 160 static struct platform_device imote2_leds = {
 161         .name = "leds-gpio",
 162         .id   = -1,
 163         .dev = {
 164                 .platform_data = &imote2_led_data,
 165         },
 166 };
 167
 168 /* Reverse engineered partly from Platformx drivers */
 169 enum imote2_ldos{
 170         vcc_vref,
 171         vcc_cc2420,
 172         vcc_mica,
 173         vcc_bt,
 174         /* The two voltages available to sensor boards */
 175         vcc_sensor_1_8,
 176         vcc_sensor_3,
 177
 178         vcc_sram_ext, /* directly connected to the pxa271 */
 179         vcc_pxa_pll,
 180         vcc_pxa_usim, /* Reference voltage for certain gpios */
 181         vcc_pxa_mem,
 182         vcc_pxa_flash,
 183         vcc_pxa_core, /*Dc-Dc buck not yet supported */
 184         vcc_lcd,
 185         vcc_bb,
 186         vcc_bbio,
 187         vcc_io, /* cc2420 802.15.4 radio and pxa vcc_io ?*/
 188 };
 189
 190 /* The values of the various regulator constraints are obviously dependent
 191  * on exactly what is wired to each ldo.  Unfortunately this information is
 192  * not generally available.  More information has been requested from Xbow
 193  * but as of yet they haven't been forthcoming.
 194  *
 195  * Some of these are clearly Stargate 2 related (no way of plugging
 196  * in an lcd on the IM2 for example!).
 197  */
 198 static struct regulator_init_data imote2_ldo_init_data[] = {
 199         [vcc_bbio] = {
 200                 .constraints = { /* board default 1.8V */
 201                         .name = "vcc_bbio",
 202                         .min_uV = 1800000,
 203                         .max_uV = 1800000,
 204                 },
 205         },
 206         [vcc_bb] = {
 207                 .constraints = { /* board default 2.8V */
 208                         .name = "vcc_bb",
 209                         .min_uV = 2700000,
 210                         .max_uV = 3000000,
 211                 },
 212         },
 213         [vcc_pxa_flash] = {
 214                 .constraints = {/* default is 1.8V */
 215                         .name = "vcc_pxa_flash",
 216                         .min_uV = 1800000,
 217                         .max_uV = 1800000,
 218                 },
 219         },
 220         [vcc_cc2420] = { /* also vcc_io */
 221                 .constraints = {
 222                         /* board default is 2.8V */
 223                         .name = "vcc_cc2420",
 224                         .min_uV = 2700000,
 225                         .max_uV = 3300000,
 226                 },
 227         },
 228         [vcc_vref] = { /* Reference for what? */
 229                 .constraints = { /* default 1.8V */
 230                         .name = "vcc_vref",
 231                         .min_uV = 1800000,
 232                         .max_uV = 1800000,
 233                 },
 234         },
 235         [vcc_sram_ext] = {
 236                 .constraints = { /* default 2.8V */
 237                         .name = "vcc_sram_ext",
 238                         .min_uV = 2800000,
 239                         .max_uV = 2800000,
 240                 },
 241         },
 242         [vcc_mica] = {
 243                 .constraints = { /* default 2.8V */
 244                         .name = "vcc_mica",
 245                         .min_uV = 2800000,
 246                         .max_uV = 2800000,
 247                 },
 248         },
 249         [vcc_bt] = {
 250                 .constraints = { /* default 2.8V */
 251                         .name = "vcc_bt",
 252                         .min_uV = 2800000,
 253                         .max_uV = 2800000,
 254                 },
 255         },
 256         [vcc_lcd] = {
 257                 .constraints = { /* default 2.8V */
 258                         .name = "vcc_lcd",
 259                         .min_uV = 2700000,
 260                         .max_uV = 3300000,
 261                 },
 262         },
 263         [vcc_io] = { /* Same or higher than everything
 264                           * bar vccbat and vccusb */
 265                 .constraints = { /* default 2.8V */
 266                         .name = "vcc_io",
 267                         .min_uV = 2692000,
 268                         .max_uV = 3300000,
 269                 },
 270         },
 271         [vcc_sensor_1_8] = {
 272                 .constraints = { /* default 1.8V */
 273                         .name = "vcc_sensor_1_8",
 274                         .min_uV = 1800000,
 275                         .max_uV = 1800000,
 276                 },
 277         },
 278         [vcc_sensor_3] = { /* curiously default 2.8V */
 279                 .constraints = {
 280                         .name = "vcc_sensor_3",
 281                         .min_uV = 2800000,
 282                         .max_uV = 3000000,
 283                 },
 284                 .num_consumer_supplies = ARRAY_SIZE(imote2_sensor_3_con),
 285                 .consumer_supplies = imote2_sensor_3_con,
 286         },
 287         [vcc_pxa_pll] = { /* 1.17V - 1.43V, default 1.3V*/
 288                 .constraints = {
 289                         .name = "vcc_pxa_pll",
 290                         .min_uV = 1170000,
 291                         .max_uV = 1430000,
 292                 },
 293         },
 294         [vcc_pxa_usim] = {
 295                 .constraints = { /* default 1.8V */
 296                         .name = "vcc_pxa_usim",
 297                         .min_uV = 1710000,
 298                         .max_uV = 2160000,
 299                 },
 300         },
 301         [vcc_pxa_mem] = {
 302                 .constraints = { /* default 1.8V */
 303                         .name = "vcc_pxa_mem",
 304                         .min_uV = 1800000,
 305                         .max_uV = 1800000,
 306                 },
 307         },
 308 };
 309
 310 static struct da903x_subdev_info imote2_da9030_subdevs[] = {
 311         {
 312                 .name = "da903x-regulator",
 313                 .id = DA9030_ID_LDO2,
 314                 .platform_data = &imote2_ldo_init_data[vcc_bbio],
 315         }, {
 316                 .name = "da903x-regulator",
 317                 .id = DA9030_ID_LDO3,
 318                 .platform_data = &imote2_ldo_init_data[vcc_bb],
 319         }, {
 320                 .name = "da903x-regulator",
 321                 .id = DA9030_ID_LDO4,
 322                 .platform_data = &imote2_ldo_init_data[vcc_pxa_flash],
 323         }, {
 324                 .name = "da903x-regulator",
 325                 .id = DA9030_ID_LDO5,
 326                 .platform_data = &imote2_ldo_init_data[vcc_cc2420],
 327         }, {
 328                 .name = "da903x-regulator",
 329                 .id = DA9030_ID_LDO6,
 330                 .platform_data = &imote2_ldo_init_data[vcc_vref],
 331         }, {
 332                 .name = "da903x-regulator",
 333                 .id = DA9030_ID_LDO7,
 334                 .platform_data = &imote2_ldo_init_data[vcc_sram_ext],
 335         }, {
 336                 .name = "da903x-regulator",
 337                 .id = DA9030_ID_LDO8,
 338                 .platform_data = &imote2_ldo_init_data[vcc_mica],
 339         }, {
 340                 .name = "da903x-regulator",
 341                 .id = DA9030_ID_LDO9,
 342                 .platform_data = &imote2_ldo_init_data[vcc_bt],
 343         }, {
 344                 .name = "da903x-regulator",
 345                 .id = DA9030_ID_LDO10,
 346                 .platform_data = &imote2_ldo_init_data[vcc_sensor_1_8],
 347         }, {
 348                 .name = "da903x-regulator",
 349                 .id = DA9030_ID_LDO11,
 350                 .platform_data = &imote2_ldo_init_data[vcc_sensor_3],
 351         }, {
 352                 .name = "da903x-regulator",
 353                 .id = DA9030_ID_LDO12,
 354                 .platform_data = &imote2_ldo_init_data[vcc_lcd],
 355         }, {
 356                 .name = "da903x-regulator",
 357                 .id = DA9030_ID_LDO15,
 358                 .platform_data = &imote2_ldo_init_data[vcc_pxa_pll],
 359         }, {
 360                 .name = "da903x-regulator",
 361                 .id = DA9030_ID_LDO17,
 362                 .platform_data = &imote2_ldo_init_data[vcc_pxa_usim],
 363         }, {
 364                 .name = "da903x-regulator",
 365                 .id = DA9030_ID_LDO18,
 366                 .platform_data = &imote2_ldo_init_data[vcc_io],
 367         }, {
 368                 .name = "da903x-regulator",
 369                 .id = DA9030_ID_LDO19,
 370                 .platform_data = &imote2_ldo_init_data[vcc_pxa_mem],
 371         },
 372 };
 373
 374 static struct da903x_platform_data imote2_da9030_pdata = {
 375         .num_subdevs = ARRAY_SIZE(imote2_da9030_subdevs),
 376         .subdevs = imote2_da9030_subdevs,
 377 };
 378
 379 /* As the the imote2 doesn't currently have a conventional SD slot
 380  * there is no option to hotplug cards, making all this rather simple
 381  */
 382 static int imote2_mci_get_ro(struct device *dev)
 383 {
 384         return 0;
 385 }
 386
 387 /* Rather simple case as hotplugging not possible */
 388 static struct pxamci_platform_data imote2_mci_platform_data = {
 389         .ocr_mask = MMC_VDD_32_33 | MMC_VDD_33_34, /* default anyway */
 390         .get_ro = imote2_mci_get_ro,
 391         .gpio_card_detect = -1,
 392         .gpio_card_ro   = -1,
 393         .gpio_power = -1,
 394 };
 395
 396 static struct mtd_partition imote2flash_partitions[] = {
 397         {
 398                 .name = "Bootloader",
 399                 .size = 0x00040000,
 400                 .offset = 0,
 401                 .mask_flags = MTD_WRITEABLE,
 402         }, {
 403                 .name = "Kernel",
 404                 .size = 0x00200000,
 405                 .offset = 0x00040000,
 406                 .mask_flags = 0,
 407         }, {
 408                 .name = "Filesystem",
 409                 .size = 0x01DC0000,
 410                 .offset = 0x00240000,
 411                 .mask_flags = 0,
 412         },
 413 };
 414
 415 static struct resource flash_resources = {
 416         .start = PXA_CS0_PHYS,
 417         .end = PXA_CS0_PHYS + SZ_32M - 1,
 418         .flags = IORESOURCE_MEM,
 419 };
 420
 421 static struct flash_platform_data imote2_flash_data = {
 422         .map_name = "cfi_probe",
 423         .parts = imote2flash_partitions,
 424         .nr_parts = ARRAY_SIZE(imote2flash_partitions),
 425         .name = "PXA27xOnChipROM",
 426         .width = 2,
 427 };
 428
 429 static struct platform_device imote2_flash_device = {
 430         .name = "pxa2xx-flash",
 431         .id = 0,
 432         .dev = {
 433                 .platform_data = &imote2_flash_data,
 434         },
 435         .resource = &flash_resources,
 436         .num_resources = 1,
 437 };
 438
 439 /* Some of the drivers here are out of kernel at the moment (parts of IIO)
 440  * and it may be a while before they are in the mainline.
 441  */
 442 static struct i2c_board_info __initdata imote2_i2c_board_info[] = {
 443         { /* UCAM sensor board */
 444                 .type = "max1239",
 445                 .addr = 0x35,
 446         }, { /* ITS400 Sensor board only */
 447                 .type = "max1363",
 448                 .addr = 0x34,
 449                 /* Through a nand gate - Also beware, on V2 sensor board the
 450                  * pull up resistors are missing.
 451                  */
 452                 .irq = IRQ_GPIO(99),
 453         }, { /* ITS400 Sensor board only */
 454                 .type = "tsl2561",
 455                 .addr = 0x49,
 456                 /* Through a nand gate - Also beware, on V2 sensor board the
 457                  * pull up resistors are missing.
 458                  */
 459                 .irq = IRQ_GPIO(99),
 460         }, { /* ITS400 Sensor board only */
 461                 .type = "tmp175",
 462                 .addr = 0x4A,
 463                 .irq = IRQ_GPIO(96),
 464         }, { /* IMB400 Multimedia board */
 465                 .type = "wm8940",
 466                 .addr = 0x1A,
 467         },
 468 };
 469
 470 static struct i2c_board_info __initdata imote2_pwr_i2c_board_info[] = {
 471         {
 472                 .type = "da9030",
 473                 .addr = 0x49,
 474                 .platform_data = &imote2_da9030_pdata,
 475                 .irq = gpio_to_irq(1),
 476         },
 477 };
 478
 479 static struct pxa2xx_spi_master pxa_ssp_master_0_info = {
 480         .num_chipselect = 1,
 481 };
 482
 483 static struct pxa2xx_spi_master pxa_ssp_master_1_info = {
 484         .num_chipselect = 1,
 485 };
 486
 487 static struct pxa2xx_spi_master pxa_ssp_master_2_info = {
 488         .num_chipselect = 1,
 489 };
 490
 491 static struct pxa2xx_spi_chip staccel_chip_info = {
 492         .tx_threshold = 8,
 493         .rx_threshold = 8,
 494         .dma_burst_size = 8,
 495         .timeout = 235,
 496         .gpio_cs = 24,
 497 };
 498
 499 static struct pxa2xx_spi_chip cc2420_info = {
 500         .tx_threshold = 8,
 501         .rx_threshold = 8,
 502         .dma_burst_size = 8,
 503         .timeout = 235,
 504         .gpio_cs = 39,
 505 };
 506
 507 static struct spi_board_info spi_board_info[] __initdata = {
 508         { /* Driver in IIO */
 509                 .modalias = "lis3l02dq",
 510                 .max_speed_hz = 8000000,/* 8MHz max spi frequency at 3V */
 511                 .bus_num = 1,
 512                 .chip_select = 0,
 513                 .controller_data = &staccel_chip_info,
 514                 .irq = IRQ_GPIO(96),
 515         }, { /* Driver out of kernel as it needs considerable rewriting */
 516                 .modalias = "cc2420",
 517                 .max_speed_hz = 6500000,
 518                 .bus_num = 3,
 519                 .chip_select = 0,
 520                 .controller_data = &cc2420_info,
 521         },
 522 };
 523
 524 static void im2_udc_command(int cmd)
 525 {
 526         switch (cmd) {
 527         case PXA2XX_UDC_CMD_CONNECT:
 528                 UP2OCR |=  UP2OCR_HXOE | UP2OCR_DPPUE | UP2OCR_DPPUBE;
 529                 break;
 530         case PXA2XX_UDC_CMD_DISCONNECT:
 531                 UP2OCR &= ~(UP2OCR_HXOE | UP2OCR_DPPUE | UP2OCR_DPPUBE);
 532                 break;
 533         }
 534 }
 535
 536 static struct pxa2xx_udc_mach_info imote2_udc_info __initdata = {
 537         .udc_command            = im2_udc_command,
 538 };
 539
 540 static struct platform_device *imote2_devices[] = {
 541         &imote2_flash_device,
 542         &imote2_leds,
 543         &sht15,
 544 };
 545
 546 static struct i2c_pxa_platform_data i2c_pwr_pdata = {
 547         .fast_mode = 1,
 548 };
 549
 550 static struct i2c_pxa_platform_data i2c_pdata = {
 551         .fast_mode = 1,
 552 };
 553
 554 static void __init imote2_init(void)
 555 {
 556         pxa2xx_mfp_config(ARRAY_AND_SIZE(imote2_pin_config));
 557
 558         pxa_set_ffuart_info(NULL);
 559         pxa_set_btuart_info(NULL);
 560         pxa_set_stuart_info(NULL);
 561
 562         /* SPI chip select directions - all other directions should
 563          * be handled by drivers.*/
 564         gpio_direction_output(37, 0);
 565
 566         platform_add_devices(imote2_devices, ARRAY_SIZE(imote2_devices));
 567
 568         pxa2xx_set_spi_info(1, &pxa_ssp_master_0_info);
 569         pxa2xx_set_spi_info(2, &pxa_ssp_master_1_info);
 570         pxa2xx_set_spi_info(3, &pxa_ssp_master_2_info);
 571
 572         spi_register_board_info(spi_board_info, ARRAY_SIZE(spi_board_info));
 573
 574         i2c_register_board_info(0, imote2_i2c_board_info,
 575                                 ARRAY_SIZE(imote2_i2c_board_info));
 576         i2c_register_board_info(1, imote2_pwr_i2c_board_info,
 577                                 ARRAY_SIZE(imote2_pwr_i2c_board_info));
 578
 579         pxa27x_set_i2c_power_info(&i2c_pwr_pdata);
 580         pxa_set_i2c_info(&i2c_pdata);
 581
 582         pxa_set_mci_info(&imote2_mci_platform_data);
 583         pxa_set_udc_info(&imote2_udc_info);
 584 }
 585
 586 MACHINE_START(INTELMOTE2, "IMOTE 2")
 587         .phys_io        = 0x40000000,
 588         .io_pg_offst    = (io_p2v(0x40000000) >> 18) & 0xfffc,
 589         .map_io         = pxa_map_io,
 590         .init_irq       = pxa27x_init_irq,
 591         .timer          = &pxa_timer,
 592         .init_machine   = imote2_init,
 593         .boot_params    = 0xA0000100,
 594 MACHINE_END