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/i2c.h>
  32 #include <mach/pxa-regs.h>
  33 #include <mach/pxa2xx-regs.h>
  34 #include <mach/mfp-pxa27x.h>
  35 #include <mach/regs-ssp.h>
  36 #include <mach/udc.h>
  37 #include <mach/mmc.h>
  38 #include <mach/pxa2xx_spi.h>
  39 #include <mach/pxa27x-udc.h>
  40
  41 #include "devices.h"
  42 #include "generic.h"
  43
  44 static unsigned long imote2_pin_config[] __initdata = {
  45
  46         /* Device Identification for wakeup*/
  47         GPIO102_GPIO,
  48
  49         /* Button */
  50         GPIO91_GPIO,
  51
  52         /* DA9030 */
  53         GPIO1_GPIO,
  54
  55         /* MMC */
  56         GPIO32_MMC_CLK,
  57         GPIO112_MMC_CMD,
  58         GPIO92_MMC_DAT_0,
  59         GPIO109_MMC_DAT_1,
  60         GPIO110_MMC_DAT_2,
  61         GPIO111_MMC_DAT_3,
  62
  63         /* 802.15.4 radio - driver out of mainline */
  64         GPIO22_GPIO,                    /* CC_RSTN */
  65         GPIO114_GPIO,                   /* CC_FIFO */
  66         GPIO116_GPIO,                   /* CC_CCA */
  67         GPIO0_GPIO,                     /* CC_FIFOP */
  68         GPIO16_GPIO,                    /* CCSFD */
  69         GPIO39_GPIO,                    /* CSn */
  70         GPIO115_GPIO,                   /* Power enable */
  71
  72         /* I2C */
  73         GPIO117_I2C_SCL,
  74         GPIO118_I2C_SDA,
  75
  76         /* SSP 3 - 802.15.4 radio */
  77         GPIO39_GPIO,                    /* Chip Select */
  78         GPIO34_SSP3_SCLK,
  79         GPIO35_SSP3_TXD,
  80         GPIO41_SSP3_RXD,
  81
  82         /* SSP 2 - to daughter boards */
  83         GPIO37_GPIO,                    /* Chip Select */
  84         GPIO36_SSP2_SCLK,
  85         GPIO38_SSP2_TXD,
  86         GPIO11_SSP2_RXD,
  87
  88         /* SSP 1 - to daughter boards */
  89         GPIO24_GPIO,                    /* Chip Select */
  90         GPIO23_SSP1_SCLK,
  91         GPIO25_SSP1_TXD,
  92         GPIO26_SSP1_RXD,
  93
  94         /* BTUART Basic Connector*/
  95         GPIO42_BTUART_RXD,
  96         GPIO43_BTUART_TXD,
  97         GPIO44_BTUART_CTS,
  98         GPIO45_BTUART_RTS,
  99
 100         /* STUART Serial console via debug board*/
 101         GPIO46_STUART_RXD,
 102         GPIO47_STUART_TXD,
 103
 104         /* Basic sensor board */
 105         GPIO96_GPIO,    /* accelerometer interrupt */
 106         GPIO99_GPIO,    /* ADC interrupt */
 107
 108         /* Connector pins specified as gpios */
 109         GPIO94_GPIO, /* large basic connector pin 14 */
 110         GPIO10_GPIO, /* large basic connector pin 23 */
 111
 112         /* LEDS */
 113         GPIO103_GPIO, /* red led */
 114         GPIO104_GPIO, /* green led */
 115         GPIO105_GPIO, /* blue led */
 116 };
 117
 118 static struct gpio_led imote2_led_pins[] = {
 119         {
 120                 .name       =  "imote2:red",
 121                 .gpio       = 103,
 122                 .active_low = 1,
 123         }, {
 124                 .name       = "imote2:green",
 125                 .gpio       = 104,
 126                 .active_low = 1,
 127         }, {
 128                 .name       = "imote2:blue",
 129                 .gpio       = 105,
 130                 .active_low = 1,
 131         },
 132 };
 133
 134 static struct gpio_led_platform_data imote2_led_data = {
 135         .num_leds = ARRAY_SIZE(imote2_led_pins),
 136         .leds     = imote2_led_pins,
 137 };
 138
 139 static struct platform_device imote2_leds = {
 140         .name = "leds-gpio",
 141         .id   = -1,
 142         .dev = {
 143                 .platform_data = &imote2_led_data,
 144         },
 145 };
 146
 147 /* Reverse engineered partly from Platformx drivers */
 148 enum imote2_ldos{
 149         vcc_vref,
 150         vcc_cc2420,
 151         vcc_mica,
 152         vcc_bt,
 153         /* The two voltages available to sensor boards */
 154         vcc_sensor_1_8,
 155         vcc_sensor_3,
 156
 157         vcc_sram_ext, /* directly connected to the pxa271 */
 158         vcc_pxa_pll,
 159         vcc_pxa_usim, /* Reference voltage for certain gpios */
 160         vcc_pxa_mem,
 161         vcc_pxa_flash,
 162         vcc_pxa_core, /*Dc-Dc buck not yet supported */
 163         vcc_lcd,
 164         vcc_bb,
 165         vcc_bbio,
 166         vcc_io, /* cc2420 802.15.4 radio and pxa vcc_io ?*/
 167 };
 168
 169 /* The values of the various regulator constraints are obviously dependent
 170  * on exactly what is wired to each ldo.  Unfortunately this information is
 171  * not generally available.  More information has been requested from Xbow
 172  * but as of yet they haven't been forthcoming.
 173  *
 174  * Some of these are clearly Stargate 2 related (no way of plugging
 175  * in an lcd on the IM2 for example!).
 176  */
 177 static struct regulator_init_data imote2_ldo_init_data[] = {
 178         [vcc_bbio] = {
 179                 .constraints = { /* board default 1.8V */
 180                         .name = "vcc_bbio",
 181                         .min_uV = 1800000,
 182                         .max_uV = 1800000,
 183                 },
 184         },
 185         [vcc_bb] = {
 186                 .constraints = { /* board default 2.8V */
 187                         .name = "vcc_bb",
 188                         .min_uV = 2700000,
 189                         .max_uV = 3000000,
 190                 },
 191         },
 192         [vcc_pxa_flash] = {
 193                 .constraints = {/* default is 1.8V */
 194                         .name = "vcc_pxa_flash",
 195                         .min_uV = 1800000,
 196                         .max_uV = 1800000,
 197                 },
 198         },
 199         [vcc_cc2420] = { /* also vcc_io */
 200                 .constraints = {
 201                         /* board default is 2.8V */
 202                         .name = "vcc_cc2420",
 203                         .min_uV = 2700000,
 204                         .max_uV = 3300000,
 205                 },
 206         },
 207         [vcc_vref] = { /* Reference for what? */
 208                 .constraints = { /* default 1.8V */
 209                         .name = "vcc_vref",
 210                         .min_uV = 1800000,
 211                         .max_uV = 1800000,
 212                 },
 213         },
 214         [vcc_sram_ext] = {
 215                 .constraints = { /* default 2.8V */
 216                         .name = "vcc_sram_ext",
 217                         .min_uV = 2800000,
 218                         .max_uV = 2800000,
 219                 },
 220         },
 221         [vcc_mica] = {
 222                 .constraints = { /* default 2.8V */
 223                         .name = "vcc_mica",
 224                         .min_uV = 2800000,
 225                         .max_uV = 2800000,
 226                 },
 227         },
 228         [vcc_bt] = {
 229                 .constraints = { /* default 2.8V */
 230                         .name = "vcc_bt",
 231                         .min_uV = 2800000,
 232                         .max_uV = 2800000,
 233                 },
 234         },
 235         [vcc_lcd] = {
 236                 .constraints = { /* default 2.8V */
 237                         .name = "vcc_lcd",
 238                         .min_uV = 2700000,
 239                         .max_uV = 3300000,
 240                 },
 241         },
 242         [vcc_io] = { /* Same or higher than everything
 243                           * bar vccbat and vccusb */
 244                 .constraints = { /* default 2.8V */
 245                         .name = "vcc_io",
 246                         .min_uV = 2692000,
 247                         .max_uV = 3300000,
 248                 },
 249         },
 250         [vcc_sensor_1_8] = {
 251                 .constraints = { /* default 1.8V */
 252                         .name = "vcc_sensor_1_8",
 253                         .min_uV = 1800000,
 254                         .max_uV = 1800000,
 255                 },
 256         },
 257         [vcc_sensor_3] = { /* curiously default 2.8V */
 258                 .constraints = {
 259                         .name = "vcc_sensor_3",
 260                         .min_uV = 2800000,
 261                         .max_uV = 3000000,
 262                 },
 263         },
 264         [vcc_pxa_pll] = { /* 1.17V - 1.43V, default 1.3V*/
 265                 .constraints = {
 266                         .name = "vcc_pxa_pll",
 267                         .min_uV = 1170000,
 268                         .max_uV = 1430000,
 269                 },
 270         },
 271         [vcc_pxa_usim] = {
 272                 .constraints = { /* default 1.8V */
 273                         .name = "vcc_pxa_usim",
 274                         .min_uV = 1710000,
 275                         .max_uV = 2160000,
 276                 },
 277         },
 278         [vcc_pxa_mem] = {
 279                 .constraints = { /* default 1.8V */
 280                         .name = "vcc_pxa_mem",
 281                         .min_uV = 1800000,
 282                         .max_uV = 1800000,
 283                 },
 284         },
 285 };
 286
 287 static struct da903x_subdev_info imote2_da9030_subdevs[] = {
 288         {
 289                 .name = "da903x-regulator",
 290                 .id = DA9030_ID_LDO2,
 291                 .platform_data = &imote2_ldo_init_data[vcc_bbio],
 292         }, {
 293                 .name = "da903x-regulator",
 294                 .id = DA9030_ID_LDO3,
 295                 .platform_data = &imote2_ldo_init_data[vcc_bb],
 296         }, {
 297                 .name = "da903x-regulator",
 298                 .id = DA9030_ID_LDO4,
 299                 .platform_data = &imote2_ldo_init_data[vcc_pxa_flash],
 300         }, {
 301                 .name = "da903x-regulator",
 302                 .id = DA9030_ID_LDO5,
 303                 .platform_data = &imote2_ldo_init_data[vcc_cc2420],
 304         }, {
 305                 .name = "da903x-regulator",
 306                 .id = DA9030_ID_LDO6,
 307                 .platform_data = &imote2_ldo_init_data[vcc_vref],
 308         }, {
 309                 .name = "da903x-regulator",
 310                 .id = DA9030_ID_LDO7,
 311                 .platform_data = &imote2_ldo_init_data[vcc_sram_ext],
 312         }, {
 313                 .name = "da903x-regulator",
 314                 .id = DA9030_ID_LDO8,
 315                 .platform_data = &imote2_ldo_init_data[vcc_mica],
 316         }, {
 317                 .name = "da903x-regulator",
 318                 .id = DA9030_ID_LDO9,
 319                 .platform_data = &imote2_ldo_init_data[vcc_bt],
 320         }, {
 321                 .name = "da903x-regulator",
 322                 .id = DA9030_ID_LDO10,
 323                 .platform_data = &imote2_ldo_init_data[vcc_sensor_1_8],
 324         }, {
 325                 .name = "da903x-regulator",
 326                 .id = DA9030_ID_LDO11,
 327                 .platform_data = &imote2_ldo_init_data[vcc_sensor_3],
 328         }, {
 329                 .name = "da903x-regulator",
 330                 .id = DA9030_ID_LDO12,
 331                 .platform_data = &imote2_ldo_init_data[vcc_lcd],
 332         }, {
 333                 .name = "da903x-regulator",
 334                 .id = DA9030_ID_LDO15,
 335                 .platform_data = &imote2_ldo_init_data[vcc_pxa_pll],
 336         }, {
 337                 .name = "da903x-regulator",
 338                 .id = DA9030_ID_LDO17,
 339                 .platform_data = &imote2_ldo_init_data[vcc_pxa_usim],
 340         }, {
 341                 .name = "da903x-regulator",
 342                 .id = DA9030_ID_LDO18,
 343                 .platform_data = &imote2_ldo_init_data[vcc_io],
 344         }, {
 345                 .name = "da903x-regulator",
 346                 .id = DA9030_ID_LDO19,
 347                 .platform_data = &imote2_ldo_init_data[vcc_pxa_mem],
 348         },
 349 };
 350
 351 static struct da903x_platform_data imote2_da9030_pdata = {
 352         .num_subdevs = ARRAY_SIZE(imote2_da9030_subdevs),
 353         .subdevs = imote2_da9030_subdevs,
 354 };
 355
 356 /* As the the imote2 doesn't currently have a conventional SD slot
 357  * there is no option to hotplug cards, making all this rather simple
 358  */
 359 static int imote2_mci_get_ro(struct device *dev)
 360 {
 361         return 0;
 362 }
 363
 364 /* Rather simple case as hotplugging not possible */
 365 static struct pxamci_platform_data imote2_mci_platform_data = {
 366         .ocr_mask = MMC_VDD_32_33 | MMC_VDD_33_34, /* default anyway */
 367         .get_ro = imote2_mci_get_ro,
 368 };
 369
 370 static struct mtd_partition imote2flash_partitions[] = {
 371         {
 372                 .name = "Bootloader",
 373                 .size = 0x00040000,
 374                 .offset = 0,
 375                 .mask_flags = MTD_WRITEABLE,
 376         }, {
 377                 .name = "Kernel",
 378                 .size = 0x00200000,
 379                 .offset = 0x00040000,
 380                 .mask_flags = 0,
 381         }, {
 382                 .name = "Filesystem",
 383                 .size = 0x01DC0000,
 384                 .offset = 0x00240000,
 385                 .mask_flags = 0,
 386         },
 387 };
 388
 389 static struct resource flash_resources = {
 390         .start = PXA_CS0_PHYS,
 391         .end = PXA_CS0_PHYS + SZ_32M - 1,
 392         .flags = IORESOURCE_MEM,
 393 };
 394
 395 static struct flash_platform_data imote2_flash_data = {
 396         .map_name = "cfi_probe",
 397         .parts = imote2flash_partitions,
 398         .nr_parts = ARRAY_SIZE(imote2flash_partitions),
 399         .name = "PXA27xOnChipROM",
 400         .width = 2,
 401 };
 402
 403 static struct platform_device imote2_flash_device = {
 404         .name = "pxa2xx-flash",
 405         .id = 0,
 406         .dev = {
 407                 .platform_data = &imote2_flash_data,
 408         },
 409         .resource = &flash_resources,
 410         .num_resources = 1,
 411 };
 412
 413 /* Some of the drivers here are out of kernel at the moment (parts of IIO)
 414  * and it may be a while before they are in the mainline.
 415  */
 416 static struct i2c_board_info __initdata imote2_i2c_board_info[] = {
 417         { /* UCAM sensor board */
 418                 .type = "max1238",
 419                 .addr = 0x35,
 420         }, { /* ITS400 Sensor board only */
 421                 .type = "max1363",
 422                 .addr = 0x34,
 423                 /* Through a nand gate - Also beware, on V2 sensor board the
 424                  * pull up resistors are missing.
 425                  */
 426                 .irq = IRQ_GPIO(99),
 427         }, { /* ITS400 Sensor board only */
 428                 .type = "tsl2561",
 429                 .addr = 0x49,
 430                 /* Through a nand gate - Also beware, on V2 sensor board the
 431                  * pull up resistors are missing.
 432                  */
 433                 .irq = IRQ_GPIO(99),
 434         }, { /* ITS400 Sensor board only */
 435                 .type = "tmp175",
 436                 .addr = 0x4A,
 437                 .irq = IRQ_GPIO(96),
 438         },
 439 };
 440
 441 static struct i2c_board_info __initdata imote2_pwr_i2c_board_info[] = {
 442         {
 443                 .type = "da9030",
 444                 .addr = 0x49,
 445                 .platform_data = &imote2_da9030_pdata,
 446                 .irq = gpio_to_irq(1),
 447         },
 448 };
 449
 450 static struct pxa2xx_spi_master pxa_ssp_master_0_info = {
 451         .num_chipselect = 1,
 452 };
 453
 454 static struct pxa2xx_spi_master pxa_ssp_master_1_info = {
 455         .num_chipselect = 1,
 456 };
 457
 458 static struct pxa2xx_spi_master pxa_ssp_master_2_info = {
 459         .num_chipselect = 1,
 460 };
 461
 462 /* Patch posted by Eric Miao <eric.miao@marvell.com> will remove
 463  * the need for these functions.
 464  */
 465 static void spi1control(u32 command)
 466 {
 467         gpio_set_value(24, command & PXA2XX_CS_ASSERT ? 0 : 1);
 468 };
 469
 470 static void spi3control(u32 command)
 471 {
 472         gpio_set_value(39, command & PXA2XX_CS_ASSERT ? 0 : 1);
 473 };
 474
 475 static struct pxa2xx_spi_chip staccel_chip_info = {
 476         .tx_threshold = 8,
 477         .rx_threshold = 8,
 478         .dma_burst_size = 8,
 479         .timeout = 235,
 480         .cs_control = spi1control,
 481 };
 482
 483 static struct pxa2xx_spi_chip cc2420_info = {
 484         .tx_threshold = 8,
 485         .rx_threshold = 8,
 486         .dma_burst_size = 8,
 487         .timeout = 235,
 488         .cs_control = spi3control,
 489 };
 490
 491 static struct spi_board_info spi_board_info[] __initdata = {
 492         { /* Driver in IIO */
 493                 .modalias = "lis3l02dq",
 494                 .max_speed_hz = 8000000,/* 8MHz max spi frequency at 3V */
 495                 .bus_num = 1,
 496                 .chip_select = 0,
 497                 .controller_data = &staccel_chip_info,
 498                 .irq = IRQ_GPIO(96),
 499         }, { /* Driver out of kernel as it needs considerable rewriting */
 500                 .modalias = "cc2420",
 501                 .max_speed_hz = 6500000,
 502                 .bus_num = 3,
 503                 .chip_select = 0,
 504                 .controller_data = &cc2420_info,
 505         },
 506 };
 507
 508 static void im2_udc_command(int cmd)
 509 {
 510         switch (cmd) {
 511         case PXA2XX_UDC_CMD_CONNECT:
 512                 UP2OCR |=  UP2OCR_HXOE | UP2OCR_DPPUE | UP2OCR_DPPUBE;
 513                 break;
 514         case PXA2XX_UDC_CMD_DISCONNECT:
 515                 UP2OCR &= ~(UP2OCR_HXOE | UP2OCR_DPPUE | UP2OCR_DPPUBE);
 516                 break;
 517         }
 518 }
 519
 520 static struct pxa2xx_udc_mach_info imote2_udc_info __initdata = {
 521         .udc_command            = im2_udc_command,
 522 };
 523
 524 static struct platform_device *imote2_devices[] = {
 525         &imote2_flash_device,
 526         &imote2_leds,
 527 };
 528
 529 static struct i2c_pxa_platform_data i2c_pwr_pdata = {
 530         .fast_mode = 1,
 531 };
 532
 533 static struct i2c_pxa_platform_data i2c_pdata = {
 534         .fast_mode = 1,
 535 };
 536
 537 static void __init imote2_init(void)
 538 {
 539
 540         pxa2xx_mfp_config(ARRAY_AND_SIZE(imote2_pin_config));
 541         /* SPI chip select directions - all other directions should
 542          * be handled by drivers.*/
 543         gpio_direction_output(37, 0);
 544         gpio_direction_output(24, 0);
 545         gpio_direction_output(39, 0);
 546
 547         platform_add_devices(imote2_devices, ARRAY_SIZE(imote2_devices));
 548
 549         pxa2xx_set_spi_info(1, &pxa_ssp_master_0_info);
 550         pxa2xx_set_spi_info(2, &pxa_ssp_master_1_info);
 551         pxa2xx_set_spi_info(3, &pxa_ssp_master_2_info);
 552
 553         spi_register_board_info(spi_board_info, ARRAY_SIZE(spi_board_info));
 554
 555         i2c_register_board_info(0, imote2_i2c_board_info,
 556                                 ARRAY_SIZE(imote2_i2c_board_info));
 557         i2c_register_board_info(1, imote2_pwr_i2c_board_info,
 558                                 ARRAY_SIZE(imote2_pwr_i2c_board_info));
 559
 560         pxa27x_set_i2c_power_info(&i2c_pwr_pdata);
 561         pxa_set_i2c_info(&i2c_pdata);
 562
 563         pxa_set_mci_info(&imote2_mci_platform_data);
 564         pxa_set_udc_info(&imote2_udc_info);
 565 }
 566
 567 MACHINE_START(INTELMOTE2, "IMOTE 2")
 568         .phys_io        = 0x40000000,
 569         .io_pg_offst    = (io_p2v(0x40000000) >> 18) & 0xfffc,
 570         .map_io         = pxa_map_io,
 571         .init_irq       = pxa27x_init_irq,
 572         .timer          = &pxa_timer,
 573         .init_machine   = imote2_init,
 574         .boot_params    = 0xA0000100,
 575 MACHINE_END