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
  26 #include <asm/mach-types.h>
  27 #include <asm/mach/arch.h>
  28 #include <asm/mach/map.h>
  29 #include <asm/mach/flash.h>
  30
  31 #include <mach/pxa27x.h>
  32 #include <mach/i2c.h>
  33 #include <mach/udc.h>
  34 #include <mach/mmc.h>
  35 #include <mach/pxa2xx_spi.h>
  36 #include <mach/pxa27x-udc.h>
  37
  38 #include "devices.h"
  39 #include "generic.h"
  40
  41 static unsigned long imote2_pin_config[] __initdata = {
  42
  43         /* Device Identification for wakeup*/
  44         GPIO102_GPIO,
  45
  46         /* Button */
  47         GPIO91_GPIO,
  48
  49         /* DA9030 */
  50         GPIO1_GPIO,
  51
  52         /* MMC */
  53         GPIO32_MMC_CLK,
  54         GPIO112_MMC_CMD,
  55         GPIO92_MMC_DAT_0,
  56         GPIO109_MMC_DAT_1,
  57         GPIO110_MMC_DAT_2,
  58         GPIO111_MMC_DAT_3,
  59
  60         /* 802.15.4 radio - driver out of mainline */
  61         GPIO22_GPIO,                    /* CC_RSTN */
  62         GPIO114_GPIO,                   /* CC_FIFO */
  63         GPIO116_GPIO,                   /* CC_CCA */
  64         GPIO0_GPIO,                     /* CC_FIFOP */
  65         GPIO16_GPIO,                    /* CCSFD */
  66         GPIO39_GPIO,                    /* CSn */
  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         /* Connector pins specified as gpios */
 106         GPIO94_GPIO, /* large basic connector pin 14 */
 107         GPIO10_GPIO, /* large basic connector pin 23 */
 108
 109         /* LEDS */
 110         GPIO103_GPIO, /* red led */
 111         GPIO104_GPIO, /* green led */
 112         GPIO105_GPIO, /* blue led */
 113 };
 114
 115 static struct gpio_led imote2_led_pins[] = {
 116         {
 117                 .name       =  "imote2:red",
 118                 .gpio       = 103,
 119                 .active_low = 1,
 120         }, {
 121                 .name       = "imote2:green",
 122                 .gpio       = 104,
 123                 .active_low = 1,
 124         }, {
 125                 .name       = "imote2:blue",
 126                 .gpio       = 105,
 127                 .active_low = 1,
 128         },
 129 };
 130
 131 static struct gpio_led_platform_data imote2_led_data = {
 132         .num_leds = ARRAY_SIZE(imote2_led_pins),
 133         .leds     = imote2_led_pins,
 134 };
 135
 136 static struct platform_device imote2_leds = {
 137         .name = "leds-gpio",
 138         .id   = -1,
 139         .dev = {
 140                 .platform_data = &imote2_led_data,
 141         },
 142 };
 143
 144 /* Reverse engineered partly from Platformx drivers */
 145 enum imote2_ldos{
 146         vcc_vref,
 147         vcc_cc2420,
 148         vcc_mica,
 149         vcc_bt,
 150         /* The two voltages available to sensor boards */
 151         vcc_sensor_1_8,
 152         vcc_sensor_3,
 153
 154         vcc_sram_ext, /* directly connected to the pxa271 */
 155         vcc_pxa_pll,
 156         vcc_pxa_usim, /* Reference voltage for certain gpios */
 157         vcc_pxa_mem,
 158         vcc_pxa_flash,
 159         vcc_pxa_core, /*Dc-Dc buck not yet supported */
 160         vcc_lcd,
 161         vcc_bb,
 162         vcc_bbio,
 163         vcc_io, /* cc2420 802.15.4 radio and pxa vcc_io ?*/
 164 };
 165
 166 /* The values of the various regulator constraints are obviously dependent
 167  * on exactly what is wired to each ldo.  Unfortunately this information is
 168  * not generally available.  More information has been requested from Xbow
 169  * but as of yet they haven't been forthcoming.
 170  *
 171  * Some of these are clearly Stargate 2 related (no way of plugging
 172  * in an lcd on the IM2 for example!).
 173  */
 174 static struct regulator_init_data imote2_ldo_init_data[] = {
 175         [vcc_bbio] = {
 176                 .constraints = { /* board default 1.8V */
 177                         .name = "vcc_bbio",
 178                         .min_uV = 1800000,
 179                         .max_uV = 1800000,
 180                 },
 181         },
 182         [vcc_bb] = {
 183                 .constraints = { /* board default 2.8V */
 184                         .name = "vcc_bb",
 185                         .min_uV = 2700000,
 186                         .max_uV = 3000000,
 187                 },
 188         },
 189         [vcc_pxa_flash] = {
 190                 .constraints = {/* default is 1.8V */
 191                         .name = "vcc_pxa_flash",
 192                         .min_uV = 1800000,
 193                         .max_uV = 1800000,
 194                 },
 195         },
 196         [vcc_cc2420] = { /* also vcc_io */
 197                 .constraints = {
 198                         /* board default is 2.8V */
 199                         .name = "vcc_cc2420",
 200                         .min_uV = 2700000,
 201                         .max_uV = 3300000,
 202                 },
 203         },
 204         [vcc_vref] = { /* Reference for what? */
 205                 .constraints = { /* default 1.8V */
 206                         .name = "vcc_vref",
 207                         .min_uV = 1800000,
 208                         .max_uV = 1800000,
 209                 },
 210         },
 211         [vcc_sram_ext] = {
 212                 .constraints = { /* default 2.8V */
 213                         .name = "vcc_sram_ext",
 214                         .min_uV = 2800000,
 215                         .max_uV = 2800000,
 216                 },
 217         },
 218         [vcc_mica] = {
 219                 .constraints = { /* default 2.8V */
 220                         .name = "vcc_mica",
 221                         .min_uV = 2800000,
 222                         .max_uV = 2800000,
 223                 },
 224         },
 225         [vcc_bt] = {
 226                 .constraints = { /* default 2.8V */
 227                         .name = "vcc_bt",
 228                         .min_uV = 2800000,
 229                         .max_uV = 2800000,
 230                 },
 231         },
 232         [vcc_lcd] = {
 233                 .constraints = { /* default 2.8V */
 234                         .name = "vcc_lcd",
 235                         .min_uV = 2700000,
 236                         .max_uV = 3300000,
 237                 },
 238         },
 239         [vcc_io] = { /* Same or higher than everything
 240                           * bar vccbat and vccusb */
 241                 .constraints = { /* default 2.8V */
 242                         .name = "vcc_io",
 243                         .min_uV = 2692000,
 244                         .max_uV = 3300000,
 245                 },
 246         },
 247         [vcc_sensor_1_8] = {
 248                 .constraints = { /* default 1.8V */
 249                         .name = "vcc_sensor_1_8",
 250                         .min_uV = 1800000,
 251                         .max_uV = 1800000,
 252                 },
 253         },
 254         [vcc_sensor_3] = { /* curiously default 2.8V */
 255                 .constraints = {
 256                         .name = "vcc_sensor_3",
 257                         .min_uV = 2800000,
 258                         .max_uV = 3000000,
 259                 },
 260         },
 261         [vcc_pxa_pll] = { /* 1.17V - 1.43V, default 1.3V*/
 262                 .constraints = {
 263                         .name = "vcc_pxa_pll",
 264                         .min_uV = 1170000,
 265                         .max_uV = 1430000,
 266                 },
 267         },
 268         [vcc_pxa_usim] = {
 269                 .constraints = { /* default 1.8V */
 270                         .name = "vcc_pxa_usim",
 271                         .min_uV = 1710000,
 272                         .max_uV = 2160000,
 273                 },
 274         },
 275         [vcc_pxa_mem] = {
 276                 .constraints = { /* default 1.8V */
 277                         .name = "vcc_pxa_mem",
 278                         .min_uV = 1800000,
 279                         .max_uV = 1800000,
 280                 },
 281         },
 282 };
 283
 284 static struct da903x_subdev_info imote2_da9030_subdevs[] = {
 285         {
 286                 .name = "da903x-regulator",
 287                 .id = DA9030_ID_LDO2,
 288                 .platform_data = &imote2_ldo_init_data[vcc_bbio],
 289         }, {
 290                 .name = "da903x-regulator",
 291                 .id = DA9030_ID_LDO3,
 292                 .platform_data = &imote2_ldo_init_data[vcc_bb],
 293         }, {
 294                 .name = "da903x-regulator",
 295                 .id = DA9030_ID_LDO4,
 296                 .platform_data = &imote2_ldo_init_data[vcc_pxa_flash],
 297         }, {
 298                 .name = "da903x-regulator",
 299                 .id = DA9030_ID_LDO5,
 300                 .platform_data = &imote2_ldo_init_data[vcc_cc2420],
 301         }, {
 302                 .name = "da903x-regulator",
 303                 .id = DA9030_ID_LDO6,
 304                 .platform_data = &imote2_ldo_init_data[vcc_vref],
 305         }, {
 306                 .name = "da903x-regulator",
 307                 .id = DA9030_ID_LDO7,
 308                 .platform_data = &imote2_ldo_init_data[vcc_sram_ext],
 309         }, {
 310                 .name = "da903x-regulator",
 311                 .id = DA9030_ID_LDO8,
 312                 .platform_data = &imote2_ldo_init_data[vcc_mica],
 313         }, {
 314                 .name = "da903x-regulator",
 315                 .id = DA9030_ID_LDO9,
 316                 .platform_data = &imote2_ldo_init_data[vcc_bt],
 317         }, {
 318                 .name = "da903x-regulator",
 319                 .id = DA9030_ID_LDO10,
 320                 .platform_data = &imote2_ldo_init_data[vcc_sensor_1_8],
 321         }, {
 322                 .name = "da903x-regulator",
 323                 .id = DA9030_ID_LDO11,
 324                 .platform_data = &imote2_ldo_init_data[vcc_sensor_3],
 325         }, {
 326                 .name = "da903x-regulator",
 327                 .id = DA9030_ID_LDO12,
 328                 .platform_data = &imote2_ldo_init_data[vcc_lcd],
 329         }, {
 330                 .name = "da903x-regulator",
 331                 .id = DA9030_ID_LDO15,
 332                 .platform_data = &imote2_ldo_init_data[vcc_pxa_pll],
 333         }, {
 334                 .name = "da903x-regulator",
 335                 .id = DA9030_ID_LDO17,
 336                 .platform_data = &imote2_ldo_init_data[vcc_pxa_usim],
 337         }, {
 338                 .name = "da903x-regulator",
 339                 .id = DA9030_ID_LDO18,
 340                 .platform_data = &imote2_ldo_init_data[vcc_io],
 341         }, {
 342                 .name = "da903x-regulator",
 343                 .id = DA9030_ID_LDO19,
 344                 .platform_data = &imote2_ldo_init_data[vcc_pxa_mem],
 345         },
 346 };
 347
 348 static struct da903x_platform_data imote2_da9030_pdata = {
 349         .num_subdevs = ARRAY_SIZE(imote2_da9030_subdevs),
 350         .subdevs = imote2_da9030_subdevs,
 351 };
 352
 353 /* As the the imote2 doesn't currently have a conventional SD slot
 354  * there is no option to hotplug cards, making all this rather simple
 355  */
 356 static int imote2_mci_get_ro(struct device *dev)
 357 {
 358         return 0;
 359 }
 360
 361 /* Rather simple case as hotplugging not possible */
 362 static struct pxamci_platform_data imote2_mci_platform_data = {
 363         .ocr_mask = MMC_VDD_32_33 | MMC_VDD_33_34, /* default anyway */
 364         .get_ro = imote2_mci_get_ro,
 365 };
 366
 367 static struct mtd_partition imote2flash_partitions[] = {
 368         {
 369                 .name = "Bootloader",
 370                 .size = 0x00040000,
 371                 .offset = 0,
 372                 .mask_flags = MTD_WRITEABLE,
 373         }, {
 374                 .name = "Kernel",
 375                 .size = 0x00200000,
 376                 .offset = 0x00040000,
 377                 .mask_flags = 0,
 378         }, {
 379                 .name = "Filesystem",
 380                 .size = 0x01DC0000,
 381                 .offset = 0x00240000,
 382                 .mask_flags = 0,
 383         },
 384 };
 385
 386 static struct resource flash_resources = {
 387         .start = PXA_CS0_PHYS,
 388         .end = PXA_CS0_PHYS + SZ_32M - 1,
 389         .flags = IORESOURCE_MEM,
 390 };
 391
 392 static struct flash_platform_data imote2_flash_data = {
 393         .map_name = "cfi_probe",
 394         .parts = imote2flash_partitions,
 395         .nr_parts = ARRAY_SIZE(imote2flash_partitions),
 396         .name = "PXA27xOnChipROM",
 397         .width = 2,
 398 };
 399
 400 static struct platform_device imote2_flash_device = {
 401         .name = "pxa2xx-flash",
 402         .id = 0,
 403         .dev = {
 404                 .platform_data = &imote2_flash_data,
 405         },
 406         .resource = &flash_resources,
 407         .num_resources = 1,
 408 };
 409
 410 /* Some of the drivers here are out of kernel at the moment (parts of IIO)
 411  * and it may be a while before they are in the mainline.
 412  */
 413 static struct i2c_board_info __initdata imote2_i2c_board_info[] = {
 414         { /* UCAM sensor board */
 415                 .type = "max1238",
 416                 .addr = 0x35,
 417         }, { /* ITS400 Sensor board only */
 418                 .type = "max1363",
 419                 .addr = 0x34,
 420                 /* Through a nand gate - Also beware, on V2 sensor board the
 421                  * pull up resistors are missing.
 422                  */
 423                 .irq = IRQ_GPIO(99),
 424         }, { /* ITS400 Sensor board only */
 425                 .type = "tsl2561",
 426                 .addr = 0x49,
 427                 /* Through a nand gate - Also beware, on V2 sensor board the
 428                  * pull up resistors are missing.
 429                  */
 430                 .irq = IRQ_GPIO(99),
 431         }, { /* ITS400 Sensor board only */
 432                 .type = "tmp175",
 433                 .addr = 0x4A,
 434                 .irq = IRQ_GPIO(96),
 435         },
 436 };
 437
 438 static struct i2c_board_info __initdata imote2_pwr_i2c_board_info[] = {
 439         {
 440                 .type = "da9030",
 441                 .addr = 0x49,
 442                 .platform_data = &imote2_da9030_pdata,
 443                 .irq = gpio_to_irq(1),
 444         },
 445 };
 446
 447 static struct pxa2xx_spi_master pxa_ssp_master_0_info = {
 448         .num_chipselect = 1,
 449 };
 450
 451 static struct pxa2xx_spi_master pxa_ssp_master_1_info = {
 452         .num_chipselect = 1,
 453 };
 454
 455 static struct pxa2xx_spi_master pxa_ssp_master_2_info = {
 456         .num_chipselect = 1,
 457 };
 458
 459 /* Patch posted by Eric Miao <eric.miao@marvell.com> will remove
 460  * the need for these functions.
 461  */
 462 static void spi1control(u32 command)
 463 {
 464         gpio_set_value(24, command & PXA2XX_CS_ASSERT ? 0 : 1);
 465 };
 466
 467 static void spi3control(u32 command)
 468 {
 469         gpio_set_value(39, command & PXA2XX_CS_ASSERT ? 0 : 1);
 470 };
 471
 472 static struct pxa2xx_spi_chip staccel_chip_info = {
 473         .tx_threshold = 8,
 474         .rx_threshold = 8,
 475         .dma_burst_size = 8,
 476         .timeout = 235,
 477         .cs_control = spi1control,
 478 };
 479
 480 static struct pxa2xx_spi_chip cc2420_info = {
 481         .tx_threshold = 8,
 482         .rx_threshold = 8,
 483         .dma_burst_size = 8,
 484         .timeout = 235,
 485         .cs_control = spi3control,
 486 };
 487
 488 static struct spi_board_info spi_board_info[] __initdata = {
 489         { /* Driver in IIO */
 490                 .modalias = "lis3l02dq",
 491                 .max_speed_hz = 8000000,/* 8MHz max spi frequency at 3V */
 492                 .bus_num = 1,
 493                 .chip_select = 0,
 494                 .controller_data = &staccel_chip_info,
 495                 .irq = IRQ_GPIO(96),
 496         }, { /* Driver out of kernel as it needs considerable rewriting */
 497                 .modalias = "cc2420",
 498                 .max_speed_hz = 6500000,
 499                 .bus_num = 3,
 500                 .chip_select = 0,
 501                 .controller_data = &cc2420_info,
 502         },
 503 };
 504
 505 static void im2_udc_command(int cmd)
 506 {
 507         switch (cmd) {
 508         case PXA2XX_UDC_CMD_CONNECT:
 509                 UP2OCR |=  UP2OCR_HXOE | UP2OCR_DPPUE | UP2OCR_DPPUBE;
 510                 break;
 511         case PXA2XX_UDC_CMD_DISCONNECT:
 512                 UP2OCR &= ~(UP2OCR_HXOE | UP2OCR_DPPUE | UP2OCR_DPPUBE);
 513                 break;
 514         }
 515 }
 516
 517 static struct pxa2xx_udc_mach_info imote2_udc_info __initdata = {
 518         .udc_command            = im2_udc_command,
 519 };
 520
 521 static struct platform_device *imote2_devices[] = {
 522         &imote2_flash_device,
 523         &imote2_leds,
 524 };
 525
 526 static struct i2c_pxa_platform_data i2c_pwr_pdata = {
 527         .fast_mode = 1,
 528 };
 529
 530 static struct i2c_pxa_platform_data i2c_pdata = {
 531         .fast_mode = 1,
 532 };
 533
 534 static void __init imote2_init(void)
 535 {
 536
 537         pxa2xx_mfp_config(ARRAY_AND_SIZE(imote2_pin_config));
 538         /* SPI chip select directions - all other directions should
 539          * be handled by drivers.*/
 540         gpio_direction_output(37, 0);
 541         gpio_direction_output(24, 0);
 542         gpio_direction_output(39, 0);
 543
 544         platform_add_devices(imote2_devices, ARRAY_SIZE(imote2_devices));
 545
 546         pxa2xx_set_spi_info(1, &pxa_ssp_master_0_info);
 547         pxa2xx_set_spi_info(2, &pxa_ssp_master_1_info);
 548         pxa2xx_set_spi_info(3, &pxa_ssp_master_2_info);
 549
 550         spi_register_board_info(spi_board_info, ARRAY_SIZE(spi_board_info));
 551
 552         i2c_register_board_info(0, imote2_i2c_board_info,
 553                                 ARRAY_SIZE(imote2_i2c_board_info));
 554         i2c_register_board_info(1, imote2_pwr_i2c_board_info,
 555                                 ARRAY_SIZE(imote2_pwr_i2c_board_info));
 556
 557         pxa27x_set_i2c_power_info(&i2c_pwr_pdata);
 558         pxa_set_i2c_info(&i2c_pdata);
 559
 560         pxa_set_mci_info(&imote2_mci_platform_data);
 561         pxa_set_udc_info(&imote2_udc_info);
 562 }
 563
 564 MACHINE_START(INTELMOTE2, "IMOTE 2")
 565         .phys_io        = 0x40000000,
 566         .io_pg_offst    = (io_p2v(0x40000000) >> 18) & 0xfffc,
 567         .map_io         = pxa_map_io,
 568         .init_irq       = pxa27x_init_irq,
 569         .timer          = &pxa_timer,
 570         .init_machine   = imote2_init,
 571         .boot_params    = 0xA0000100,
 572 MACHINE_END