arch/arm/mach-omap2/board-omap3pandora.c

   1 /*
   2  * board-omap3pandora.c (Pandora Handheld Console)
   3  *
   4  * This program is free software; you can redistribute it and/or
   5  * modify it under the terms of the GNU General Public License
   6  * version 2 as published by the Free Software Foundation.
   7  *
   8  * This program is distributed in the hope that it will be useful, but
   9  * WITHOUT ANY WARRANTY; without even the implied warranty of
  10  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  11  * General Public License for more details.
  12  *
  13  * You should have received a copy of the GNU General Public License
  14  * along with this program; if not, write to the Free Software
  15  * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
  16  * 02110-1301 USA
  17  *
  18  */
  19
  20 #include <linux/init.h>
  21 #include <linux/kernel.h>
  22 #include <linux/platform_device.h>
  23
  24 #include <linux/spi/spi.h>
  25 #include <linux/regulator/machine.h>
  26 #include <linux/i2c/twl.h>
  27 #include <linux/wl12xx.h>
  28 #include <linux/mtd/partitions.h>
  29 #include <linux/mtd/nand.h>
  30 #include <linux/leds.h>
  31 #include <linux/leds_pwm.h>
  32 #include <linux/input.h>
  33 #include <linux/input/matrix_keypad.h>
  34 #include <linux/gpio.h>
  35 #include <linux/gpio_keys.h>
  36 #include <linux/mmc/host.h>
  37 #include <linux/mmc/card.h>
  38 #include <linux/regulator/fixed.h>
  39 #include <linux/i2c/vsense.h>
  40 #include <linux/dma-mapping.h>
  41 #include <linux/dma-contiguous.h>
  42
  43 #include <asm/mach-types.h>
  44 #include <asm/mach/arch.h>
  45 #include <asm/mach/map.h>
  46
  47 #include <plat/board.h>
  48 #include <plat/common.h>
  49 #include <mach/hardware.h>
  50 #include <plat/mcspi.h>
  51 #include <plat/usb.h>
  52 #include <video/omapdss.h>
  53 #include <plat/nand.h>
  54
  55 #include "mux.h"
  56 #include "sdram-micron-mt46h32m32lf-6.h"
  57 #include "sdram-micron-mt29c4g96mazapcjg-5.h"
  58 #include "hsmmc.h"
  59 #include "common-board-devices.h"
  60
  61 #define PANDORA_WIFI_IRQ_GPIO           21
  62 #define PANDORA_WIFI_NRESET_GPIO        23
  63 #define OMAP3_PANDORA_TS_GPIO           94
  64 #define PANDORA_EN_USB_5V_GPIO          164
  65
  66 static struct mtd_partition omap3pandora_nand_partitions[] = {
  67         {
  68                 .name           = "xloader",
  69                 .offset         = 0,
  70                 .size           = 4 * NAND_BLOCK_SIZE,
  71                 .mask_flags     = MTD_WRITEABLE
  72         }, {
  73                 .name           = "uboot",
  74                 .offset         = MTDPART_OFS_APPEND,
  75                 .size           = 15 * NAND_BLOCK_SIZE,
  76         }, {
  77                 .name           = "uboot-env",
  78                 .offset         = MTDPART_OFS_APPEND,
  79                 .size           = 1 * NAND_BLOCK_SIZE,
  80         }, {
  81                 .name           = "boot",
  82                 .offset         = MTDPART_OFS_APPEND,
  83                 .size           = 80 * NAND_BLOCK_SIZE,
  84         }, {
  85                 .name           = "rootfs",
  86                 .offset         = MTDPART_OFS_APPEND,
  87                 .size           = MTDPART_SIZ_FULL,
  88         },
  89 };
  90
  91 static struct omap_nand_platform_data pandora_nand_data = {
  92         .cs             = 0,
  93         .devsize        = NAND_BUSWIDTH_16,
  94         .xfer_type      = NAND_OMAP_PREFETCH_DMA,
  95         .parts          = omap3pandora_nand_partitions,
  96         .nr_parts       = ARRAY_SIZE(omap3pandora_nand_partitions),
  97         .dev_ready      = true,
  98 };
  99
 100 static struct gpio_led pandora_gpio_leds[] = {
 101         {
 102                 .name                   = "pandora::sd1",
 103                 .default_trigger        = "mmc0",
 104                 .gpio                   = 128,
 105         }, {
 106                 .name                   = "pandora::sd2",
 107                 .default_trigger        = "mmc1",
 108                 .gpio                   = 129,
 109         }, {
 110                 .name                   = "pandora::bluetooth",
 111                 .gpio                   = 158,
 112         }, {
 113                 .name                   = "pandora::wifi",
 114                 .gpio                   = 159,
 115         },
 116 };
 117
 118 static struct gpio_led_platform_data pandora_gpio_led_data = {
 119         .leds           = pandora_gpio_leds,
 120         .num_leds       = ARRAY_SIZE(pandora_gpio_leds),
 121 };
 122
 123 static struct platform_device pandora_leds_gpio = {
 124         .name   = "leds-gpio",
 125         .id     = -1,
 126         .dev    = {
 127                 .platform_data  = &pandora_gpio_led_data,
 128         },
 129 };
 130
 131 static struct led_pwm pandora_pwm_leds[] = {
 132         {
 133                 .name                   = "pandora::keypad_bl",
 134                 .pwm_id                 = 0, /* LEDA */
 135         }, {
 136                 .name                   = "pandora::power",
 137                 .default_trigger        = "default-on",
 138                 .pwm_id                 = 1, /* LEDB */
 139         }, {
 140                 .name                   = "pandora::charger",
 141                 .default_trigger        = "twl4030_bci-charging",
 142                 .pwm_id                 = 3, /* PWM1 */
 143         }
 144 };
 145
 146 static struct led_pwm_platform_data pandora_pwm_led_data = {
 147         .leds           = pandora_pwm_leds,
 148         .num_leds       = ARRAY_SIZE(pandora_pwm_leds),
 149 };
 150
 151 static struct platform_device pandora_leds_pwm = {
 152         .name   = "leds-twl4030-pwm",
 153         .id     = -1,
 154         .dev    = {
 155                 .platform_data  = &pandora_pwm_led_data,
 156         },
 157 };
 158
 159 static struct platform_device pandora_bl = {
 160         .name   = "pandora-backlight",
 161         .id     = -1,
 162 };
 163
 164 #define GPIO_BUTTON(gpio_num, ev_type, ev_code, act_low, descr) \
 165 {                                                               \
 166         .gpio           = gpio_num,                             \
 167         .type           = ev_type,                              \
 168         .code           = ev_code,                              \
 169         .active_low     = act_low,                              \
 170         .debounce_interval = 4,                                 \
 171         .desc           = "btn " descr,                         \
 172 }
 173
 174 #define GPIO_BUTTON_LOW(gpio_num, event_code, description)      \
 175         GPIO_BUTTON(gpio_num, EV_KEY, event_code, 1, description)
 176
 177 static struct gpio_keys_button pandora_gpio_keys[] = {
 178         GPIO_BUTTON_LOW(110,    KEY_UP,         "up"),
 179         GPIO_BUTTON_LOW(103,    KEY_DOWN,       "down"),
 180         GPIO_BUTTON_LOW(96,     KEY_LEFT,       "left"),
 181         GPIO_BUTTON_LOW(98,     KEY_RIGHT,      "right"),
 182         GPIO_BUTTON_LOW(109,    KEY_PAGEUP,     "game 1"),
 183         GPIO_BUTTON_LOW(111,    KEY_END,        "game 2"),
 184         GPIO_BUTTON_LOW(106,    KEY_PAGEDOWN,   "game 3"),
 185         GPIO_BUTTON_LOW(101,    KEY_HOME,       "game 4"),
 186         GPIO_BUTTON_LOW(102,    KEY_RIGHTSHIFT, "l"),
 187         GPIO_BUTTON_LOW(97,     KEY_KPPLUS,     "l2"),
 188         GPIO_BUTTON_LOW(105,    KEY_RIGHTCTRL,  "r"),
 189         GPIO_BUTTON_LOW(107,    KEY_KPMINUS,    "r2"),
 190         GPIO_BUTTON_LOW(104,    KEY_LEFTCTRL,   "ctrl"),
 191         GPIO_BUTTON_LOW(99,     KEY_MENU,       "menu"),
 192         GPIO_BUTTON_LOW(176,    KEY_COFFEE,     "hold"),
 193         GPIO_BUTTON(100, EV_KEY, KEY_LEFTALT, 0, "alt"),
 194         GPIO_BUTTON(108, EV_SW, SW_LID, 1, "lid"),
 195 };
 196
 197 static struct gpio_keys_platform_data pandora_gpio_key_info = {
 198         .buttons        = pandora_gpio_keys,
 199         .nbuttons       = ARRAY_SIZE(pandora_gpio_keys),
 200 };
 201
 202 static struct platform_device pandora_keys_gpio = {
 203         .name   = "gpio-keys",
 204         .id     = -1,
 205         .dev    = {
 206                 .platform_data  = &pandora_gpio_key_info,
 207         },
 208 };
 209
 210 /* HACK: this requires patched twl4030_keypad driver */
 211 #define FNKEY(row, col, code) KEY((row + 8), col, code)
 212
 213 static const uint32_t board_keymap[] = {
 214         /* row, col, code */
 215         KEY(0, 0, KEY_9),
 216         KEY(0, 1, KEY_8),
 217         KEY(0, 2, KEY_I),
 218         KEY(0, 3, KEY_J),
 219         KEY(0, 4, KEY_N),
 220         KEY(0, 5, KEY_M),
 221         KEY(1, 0, KEY_0),
 222         KEY(1, 1, KEY_7),
 223         KEY(1, 2, KEY_U),
 224         KEY(1, 3, KEY_H),
 225         KEY(1, 4, KEY_B),
 226         KEY(1, 5, KEY_SPACE),
 227         KEY(2, 0, KEY_BACKSPACE),
 228         KEY(2, 1, KEY_6),
 229         KEY(2, 2, KEY_Y),
 230         KEY(2, 3, KEY_G),
 231         KEY(2, 4, KEY_V),
 232         KEY(2, 5, KEY_FN),
 233         KEY(3, 0, KEY_O),
 234         KEY(3, 1, KEY_5),
 235         KEY(3, 2, KEY_T),
 236         KEY(3, 3, KEY_F),
 237         KEY(3, 4, KEY_C),
 238         KEY(4, 0, KEY_P),
 239         KEY(4, 1, KEY_4),
 240         KEY(4, 2, KEY_R),
 241         KEY(4, 3, KEY_D),
 242         KEY(4, 4, KEY_X),
 243         KEY(5, 0, KEY_K),
 244         KEY(5, 1, KEY_3),
 245         KEY(5, 2, KEY_E),
 246         KEY(5, 3, KEY_S),
 247         KEY(5, 4, KEY_Z),
 248         KEY(6, 0, KEY_L),
 249         KEY(6, 1, KEY_2),
 250         KEY(6, 2, KEY_W),
 251         KEY(6, 3, KEY_A),
 252         KEY(6, 4, KEY_DOT),
 253         KEY(7, 0, KEY_ENTER),
 254         KEY(7, 1, KEY_1),
 255         KEY(7, 2, KEY_Q),
 256         KEY(7, 3, KEY_LEFTSHIFT),
 257         KEY(7, 4, KEY_COMMA),
 258         /* Fn keys */
 259         FNKEY(0, 0, KEY_F9),
 260         FNKEY(0, 1, KEY_F8),
 261         FNKEY(0, 2, KEY_BRIGHTNESSUP),
 262         FNKEY(0, 3, KEY_F13),           /* apostrophe, differs from Fn-A? */
 263         FNKEY(0, 4, KEY_F22),
 264         FNKEY(0, 5, KEY_F23),
 265         FNKEY(1, 0, KEY_F10),
 266         FNKEY(1, 1, KEY_F7),
 267         FNKEY(1, 2, KEY_BRIGHTNESSDOWN),
 268         FNKEY(1, 3, KEY_GRAVE),
 269         FNKEY(1, 4, KEY_F14),           /* pipe/bar */
 270         FNKEY(1, 5, KEY_TAB),
 271         FNKEY(2, 0, KEY_INSERT),
 272         FNKEY(2, 1, KEY_F6),
 273         FNKEY(2, 2, KEY_F15),           /* dash */
 274         FNKEY(2, 3, KEY_EQUAL),
 275         FNKEY(2, 4, KEY_F16),           /* # (pound/hash) */
 276         FNKEY(2, 5, KEY_FN),
 277         FNKEY(3, 0, KEY_F11),
 278         FNKEY(3, 1, KEY_F5),
 279         FNKEY(3, 2, KEY_F17),           /* ! */
 280         FNKEY(3, 3, KEY_KPPLUS),
 281         FNKEY(3, 4, KEY_BACKSLASH),
 282         FNKEY(4, 0, KEY_F12),
 283         FNKEY(4, 1, KEY_F4),
 284         FNKEY(4, 2, KEY_RIGHTBRACE),
 285         FNKEY(4, 3, KEY_KPMINUS),
 286         FNKEY(4, 4, KEY_QUESTION),
 287         FNKEY(5, 0, KEY_F18),           /* £ (pound) */
 288         FNKEY(5, 1, KEY_F3),
 289         FNKEY(5, 2, KEY_LEFTBRACE),
 290         FNKEY(5, 3, KEY_F19),           /* " */
 291         FNKEY(5, 4, KEY_SLASH),
 292         FNKEY(6, 0, KEY_YEN),
 293         FNKEY(6, 1, KEY_F2),
 294         FNKEY(6, 2, KEY_F20),           /* @ */
 295         FNKEY(6, 3, KEY_APOSTROPHE),
 296         FNKEY(6, 4, KEY_F21),           /* : */
 297         FNKEY(7, 0, KEY_ENTER),
 298         FNKEY(7, 1, KEY_F1),
 299         FNKEY(7, 2, KEY_ESC),
 300         FNKEY(7, 3, KEY_CAPSLOCK),
 301         FNKEY(7, 4, KEY_SEMICOLON),
 302 };
 303
 304 static struct matrix_keymap_data board_map_data = {
 305         .keymap                 = board_keymap,
 306         .keymap_size            = ARRAY_SIZE(board_keymap),
 307 };
 308
 309 static struct twl4030_keypad_data pandora_kp_data = {
 310         .keymap_data    = &board_map_data,
 311         .rows           = 8,
 312         .cols           = 6,
 313         .rep            = 1,
 314 };
 315
 316 static struct omap_dss_device pandora_lcd_device = {
 317         .name                   = "lcd",
 318         .driver_name            = "tpo_td043mtea1_panel",
 319         .type                   = OMAP_DISPLAY_TYPE_DPI,
 320         .phy.dpi.data_lines     = 24,
 321         .reset_gpio             = 157,
 322 };
 323
 324 static struct omap_dss_device pandora_tv_device = {
 325         .name                   = "tv",
 326         .driver_name            = "venc",
 327         .type                   = OMAP_DISPLAY_TYPE_VENC,
 328         .phy.venc.type          = OMAP_DSS_VENC_TYPE_SVIDEO,
 329 };
 330
 331 static struct omap_dss_device *pandora_dss_devices[] = {
 332         &pandora_lcd_device,
 333         &pandora_tv_device,
 334 };
 335
 336 static struct omap_dss_board_info pandora_dss_data = {
 337         .num_devices    = ARRAY_SIZE(pandora_dss_devices),
 338         .devices        = pandora_dss_devices,
 339         .default_device = &pandora_lcd_device,
 340 };
 341
 342 static void pandora_wl1251_init_card(struct mmc_card *card)
 343 {
 344         /*
 345          * We have TI wl1251 attached to MMC3. Pass this information to
 346          * SDIO core because it can't be probed by normal methods.
 347          */
 348         card->quirks |= MMC_QUIRK_NONSTD_SDIO;
 349         card->cccr.wide_bus = 1;
 350         card->cis.vendor = 0x104c;
 351         card->cis.device = 0x9066;
 352         card->cis.blksize = 512;
 353         card->cis.max_dtr = 24000000;
 354 }
 355
 356 static struct omap2_hsmmc_info omap3pandora_mmc[] = {
 357         {
 358                 .mmc            = 1,
 359                 .caps           = MMC_CAP_4_BIT_DATA,
 360                 .gpio_cd        = -EINVAL,
 361                 //.gpio_wp      = 126,
 362                 .gpio_wp        = -EINVAL,
 363                 .ext_clock      = 0,
 364         },
 365         {
 366                 .mmc            = 2,
 367                 .caps           = MMC_CAP_4_BIT_DATA,
 368                 .gpio_cd        = -EINVAL,
 369                 //.gpio_wp      = 127,
 370                 .gpio_wp        = -EINVAL,
 371                 .ext_clock      = 1,
 372                 .transceiver    = true,
 373         },
 374         {
 375                 .mmc            = 3,
 376                 .caps           = MMC_CAP_4_BIT_DATA | MMC_CAP_POWER_OFF_CARD,
 377                 .gpio_cd        = -EINVAL,
 378                 .gpio_wp        = -EINVAL,
 379                 .init_card      = pandora_wl1251_init_card,
 380         },
 381         {}      /* Terminator */
 382 };
 383
 384 static int omap3pandora_twl_gpio_setup(struct device *dev,
 385                 unsigned gpio, unsigned ngpio)
 386 {
 387         int ret, gpio_32khz;
 388
 389         /* gpio + {0,1} is "mmc{0,1}_cd" (input/IRQ) */
 390         omap3pandora_mmc[0].gpio_cd = gpio + 0;
 391         omap3pandora_mmc[1].gpio_cd = gpio + 1;
 392         omap2_hsmmc_init(omap3pandora_mmc);
 393
 394         /* gpio + 13 drives 32kHz buffer for wifi module */
 395         gpio_32khz = gpio + 13;
 396         ret = gpio_request_one(gpio_32khz, GPIOF_OUT_INIT_HIGH, "wifi 32kHz");
 397         if (ret < 0) {
 398                 pr_err("Cannot get GPIO line %d, ret=%d\n", gpio_32khz, ret);
 399                 return -ENODEV;
 400         }
 401
 402         return 0;
 403 }
 404
 405 static struct twl4030_gpio_platform_data omap3pandora_gpio_data = {
 406         .gpio_base      = OMAP_MAX_GPIO_LINES,
 407         .irq_base       = TWL4030_GPIO_IRQ_BASE,
 408         .irq_end        = TWL4030_GPIO_IRQ_END,
 409         .setup          = omap3pandora_twl_gpio_setup,
 410         /* note: never set PU/PD for gpio2, it's connected to vaux2 */
 411         .pulldowns      = BIT(8) | BIT(15) | BIT(16) | BIT(17),
 412         .debounce       = BIT(0) | BIT(1),
 413 };
 414
 415 static struct regulator_consumer_supply pandora_vmmc1_supply[] = {
 416         REGULATOR_SUPPLY("vmmc", "omap_hsmmc.0"),
 417 };
 418
 419 static struct regulator_consumer_supply pandora_vmmc2_supply[] = {
 420         REGULATOR_SUPPLY("vmmc", "omap_hsmmc.1")
 421 };
 422
 423 static struct regulator_consumer_supply pandora_vmmc3_supply[] = {
 424         REGULATOR_SUPPLY("vmmc", "omap_hsmmc.2"),
 425 };
 426
 427 static struct regulator_consumer_supply pandora_vdds_supplies[] = {
 428         REGULATOR_SUPPLY("vdds_sdi", "omapdss"),
 429         REGULATOR_SUPPLY("vdds_dsi", "omapdss"),
 430         REGULATOR_SUPPLY("vdds_dsi", "omapdss_dsi.0"),
 431 };
 432
 433 static struct regulator_consumer_supply pandora_vcc_lcd_supply[] = {
 434         REGULATOR_SUPPLY("vcc", "display0"),
 435         /* on non-CC units only, must be last */
 436         REGULATOR_SUPPLY("vdd", "display0"),
 437 };
 438
 439 static struct regulator_consumer_supply pandora_usb_phy_supply[] = {
 440         REGULATOR_SUPPLY("hsusb1", "ehci-omap.0"),
 441 };
 442
 443 static struct regulator_consumer_supply pandora_exp_supply[] = {
 444         REGULATOR_SUPPLY("exp", NULL),
 445 };
 446
 447 /* ads7846 on SPI and 2 nub controllers on I2C */
 448 static struct regulator_consumer_supply pandora_vaux4_supplies[] = {
 449         REGULATOR_SUPPLY("vcc", "spi1.0"),
 450         REGULATOR_SUPPLY("vcc", "3-0066"),
 451         REGULATOR_SUPPLY("vcc", "3-0067"),
 452 };
 453
 454 static struct regulator_consumer_supply pandora_adac_supply[] = {
 455         REGULATOR_SUPPLY("vcc", "soc-audio"),
 456         REGULATOR_SUPPLY("lidsw", NULL),
 457 };
 458
 459 static struct regulator_consumer_supply pandora_5v_supplies[] = {
 460         REGULATOR_SUPPLY("v5v_force", NULL),
 461         REGULATOR_SUPPLY("vdd_amp", "soc-audio"),
 462         REGULATOR_SUPPLY("hsusb1_vbus", "ehci-omap.0"),
 463         REGULATOR_SUPPLY("vdd", "display0"), /* on CC units, must be last */
 464 };
 465
 466 /* VMMC1 for MMC1 pins CMD, CLK, DAT0..DAT3 (20 mA, plus card == max 220 mA) */
 467 static struct regulator_init_data pandora_vmmc1 = {
 468         .constraints = {
 469                 .min_uV                 = 1850000,
 470                 .max_uV                 = 3150000,
 471                 .valid_modes_mask       = REGULATOR_MODE_NORMAL
 472                                         | REGULATOR_MODE_STANDBY,
 473                 .valid_ops_mask         = REGULATOR_CHANGE_VOLTAGE
 474                                         | REGULATOR_CHANGE_MODE
 475                                         | REGULATOR_CHANGE_STATUS,
 476         },
 477         .num_consumer_supplies  = ARRAY_SIZE(pandora_vmmc1_supply),
 478         .consumer_supplies      = pandora_vmmc1_supply,
 479 };
 480
 481 /* VMMC2 for MMC2 pins CMD, CLK, DAT0..DAT3 (max 100 mA) */
 482 static struct regulator_init_data pandora_vmmc2 = {
 483         .constraints = {
 484                 .min_uV                 = 1850000,
 485                 .max_uV                 = 3150000,
 486                 .valid_modes_mask       = REGULATOR_MODE_NORMAL
 487                                         | REGULATOR_MODE_STANDBY,
 488                 .valid_ops_mask         = REGULATOR_CHANGE_VOLTAGE
 489                                         | REGULATOR_CHANGE_MODE
 490                                         | REGULATOR_CHANGE_STATUS,
 491         },
 492         .num_consumer_supplies  = ARRAY_SIZE(pandora_vmmc2_supply),
 493         .consumer_supplies      = pandora_vmmc2_supply,
 494 };
 495
 496 /* VAUX1 for LCD */
 497 static struct regulator_init_data pandora_vaux1 = {
 498         .constraints = {
 499                 .min_uV                 = 3000000,
 500                 .max_uV                 = 3000000,
 501                 .apply_uV               = true,
 502                 .valid_modes_mask       = REGULATOR_MODE_NORMAL
 503                                         | REGULATOR_MODE_STANDBY,
 504                 .valid_ops_mask         = REGULATOR_CHANGE_MODE
 505                                         | REGULATOR_CHANGE_STATUS,
 506         },
 507         .num_consumer_supplies  = ARRAY_SIZE(pandora_vcc_lcd_supply),
 508         .consumer_supplies      = pandora_vcc_lcd_supply,
 509 };
 510
 511 /* VAUX2 for USB host PHY */
 512 static struct regulator_init_data pandora_vaux2 = {
 513         .constraints = {
 514                 .min_uV                 = 1800000,
 515                 .max_uV                 = 1800000,
 516                 .apply_uV               = true,
 517                 .valid_modes_mask       = REGULATOR_MODE_NORMAL
 518                                         | REGULATOR_MODE_STANDBY,
 519                 .valid_ops_mask         = REGULATOR_CHANGE_MODE
 520                                         | REGULATOR_CHANGE_STATUS,
 521                 /* turning it off wastes power for unknown reason */
 522                 .always_on              = true,
 523         },
 524         .num_consumer_supplies  = ARRAY_SIZE(pandora_usb_phy_supply),
 525         .consumer_supplies      = pandora_usb_phy_supply,
 526 };
 527
 528 /* VAUX3 goes to the expansion port */
 529 static struct regulator_init_data pandora_vaux3 = {
 530         .constraints = {
 531                 .min_uV                 = 1500000,
 532                 .max_uV                 = 3000000,
 533                 .valid_modes_mask       = REGULATOR_MODE_NORMAL
 534                                         | REGULATOR_MODE_STANDBY,
 535                 .valid_ops_mask         = REGULATOR_CHANGE_VOLTAGE
 536                                         | REGULATOR_CHANGE_MODE
 537                                         | REGULATOR_CHANGE_STATUS,
 538         },
 539         .num_consumer_supplies  = ARRAY_SIZE(pandora_exp_supply),
 540         .consumer_supplies      = pandora_exp_supply,
 541 };
 542
 543 /* VAUX4 for ads7846 and nubs */
 544 static struct regulator_init_data pandora_vaux4 = {
 545         .constraints = {
 546                 .min_uV                 = 3000000,
 547                 .max_uV                 = 3000000,
 548                 .apply_uV               = true,
 549                 .valid_modes_mask       = REGULATOR_MODE_NORMAL
 550                                         | REGULATOR_MODE_STANDBY,
 551                 .valid_ops_mask         = REGULATOR_CHANGE_MODE
 552                                         | REGULATOR_CHANGE_STATUS,
 553                 /* turning it off wastes power for unknown reason */
 554                 .always_on              = true,
 555         },
 556         .num_consumer_supplies  = ARRAY_SIZE(pandora_vaux4_supplies),
 557         .consumer_supplies      = pandora_vaux4_supplies,
 558 };
 559
 560 /* VSIM for audio DAC */
 561 static struct regulator_init_data pandora_vsim = {
 562         .constraints = {
 563                 .min_uV                 = 2800000,
 564                 .max_uV                 = 2800000,
 565                 .apply_uV               = true,
 566                 .valid_modes_mask       = REGULATOR_MODE_NORMAL
 567                                         | REGULATOR_MODE_STANDBY,
 568                 .valid_ops_mask         = REGULATOR_CHANGE_MODE
 569                                         | REGULATOR_CHANGE_STATUS,
 570         },
 571         .num_consumer_supplies  = ARRAY_SIZE(pandora_adac_supply),
 572         .consumer_supplies      = pandora_adac_supply,
 573 };
 574
 575 /* REGEN enables the 5V supply */
 576 static struct regulator_init_data pandora_regen = {
 577         .constraints = {
 578                 .valid_modes_mask       = REGULATOR_MODE_NORMAL
 579                                         | REGULATOR_MODE_STANDBY,
 580                 .valid_ops_mask         = REGULATOR_CHANGE_MODE
 581                                         | REGULATOR_CHANGE_STATUS,
 582         },
 583 };
 584
 585 /* 5V supply that feeds EHCI VBUS, audio amp, and (on CC only) the LCD */
 586 static struct regulator_init_data pandora_v5v_data = {
 587         .supply_regulator       = "REGEN",
 588         .num_consumer_supplies  = ARRAY_SIZE(pandora_5v_supplies),
 589         .consumer_supplies      = pandora_5v_supplies,
 590 };
 591
 592 static struct fixed_voltage_config pandora_v5v = {
 593         .supply_name            = "v5v",
 594         .microvolts             = 5000000,
 595         .gpio                   = -EINVAL,
 596         .startup_delay          = 5000, /* just a guess */
 597         .enabled_at_boot        = 1,
 598         .init_data              = &pandora_v5v_data,
 599 };
 600
 601 static struct platform_device pandora_v5v_device = {
 602         .name           = "reg-fixed-voltage",
 603         .id             = 0,
 604         .dev = {
 605                 .platform_data = &pandora_v5v,
 606         },
 607 };
 608
 609 /* Fixed regulator internal to Wifi module */
 610 static struct regulator_init_data pandora_vmmc3 = {
 611         .constraints = {
 612                 .valid_ops_mask         = REGULATOR_CHANGE_STATUS,
 613         },
 614         .num_consumer_supplies  = ARRAY_SIZE(pandora_vmmc3_supply),
 615         .consumer_supplies      = pandora_vmmc3_supply,
 616 };
 617
 618 static struct fixed_voltage_config pandora_vwlan = {
 619         .supply_name            = "vwlan",
 620         .microvolts             = 1800000, /* 1.8V */
 621         .gpio                   = PANDORA_WIFI_NRESET_GPIO,
 622         .startup_delay          = 50000, /* 50ms */
 623         .enable_high            = 1,
 624         .enabled_at_boot        = 0,
 625         .init_data              = &pandora_vmmc3,
 626 };
 627
 628 static struct platform_device pandora_vwlan_device = {
 629         .name           = "reg-fixed-voltage",
 630         .id             = 1,
 631         .dev = {
 632                 .platform_data = &pandora_vwlan,
 633         },
 634 };
 635
 636 static char *pandora_power_supplied_to[] = {
 637         "bq27500-0",
 638 };
 639
 640 static struct twl4030_bci_platform_data pandora_bci_data = {
 641         .supplied_to            = pandora_power_supplied_to,
 642         .num_supplicants        = ARRAY_SIZE(pandora_power_supplied_to),
 643 };
 644
 645 static struct twl4030_ins sleep_on_seq[] = {
 646         { MSG_BROADCAST(DEV_GRP_NULL, RES_GRP_ALL, 1, 0, RES_STATE_SLEEP), 2 },
 647 };
 648
 649 static struct twl4030_script sleep_on_script = {
 650         .script = sleep_on_seq,
 651         .size   = ARRAY_SIZE(sleep_on_seq),
 652         .flags  = TWL4030_SLEEP_SCRIPT,
 653 };
 654
 655 static struct twl4030_ins wakeup_p3_seq[] = {
 656         { MSG_BROADCAST(DEV_GRP_NULL, RES_GRP_ALL, 1, 0, RES_STATE_ACTIVE), 2 },
 657 };
 658
 659 static struct twl4030_script wakeup_p3_script = {
 660         .script = wakeup_p3_seq,
 661         .size   = ARRAY_SIZE(wakeup_p3_seq),
 662         .flags  = TWL4030_WAKEUP3_SCRIPT,
 663 };
 664
 665 static struct twl4030_script *twl4030_scripts[] = {
 666         /* wakeup script should be loaded before sleep script, otherwise a
 667            board might hit retention before loading of wakeup script is
 668            completed. This can cause boot failures depending on timing issues.
 669         */
 670         &wakeup_p3_script,
 671         &sleep_on_script,
 672 };
 673
 674 static struct twl4030_resconfig twl4030_rconfig[] = {
 675         {
 676                 .resource = RES_HFCLKOUT, .devgroup = DEV_GRP_P3,
 677                 .type = 1, .type2 = -1, .remap_off = -1, .remap_sleep = -1
 678         },
 679         { 0, 0},
 680 };
 681
 682 static struct twl4030_power_data pandora_power_data = {
 683         .scripts        = twl4030_scripts,
 684         .num            = ARRAY_SIZE(twl4030_scripts),
 685         .resource_config = twl4030_rconfig,
 686
 687         .use_poweroff   = 1,
 688 };
 689
 690 static struct twl4030_platform_data omap3pandora_twldata = {
 691         .gpio           = &omap3pandora_gpio_data,
 692         .vmmc1          = &pandora_vmmc1,
 693         .vmmc2          = &pandora_vmmc2,
 694         .vaux1          = &pandora_vaux1,
 695         .vaux2          = &pandora_vaux2,
 696         .vaux3          = &pandora_vaux3,
 697         .vaux4          = &pandora_vaux4,
 698         .vsim           = &pandora_vsim,
 699         .regen          = &pandora_regen,
 700         .keypad         = &pandora_kp_data,
 701         .bci            = &pandora_bci_data,
 702         .power          = &pandora_power_data,
 703
 704         .dep_device     = &pandora_v5v_device,
 705 };
 706
 707 static struct vsense_platform_data omap3pandora_nub1_data = {
 708         .gpio_irq       = 161,
 709         .gpio_reset     = 156,
 710 };
 711
 712 static struct vsense_platform_data omap3pandora_nub2_data = {
 713         .gpio_irq       = 162,
 714         .gpio_reset     = 156,
 715 };
 716
 717 static struct i2c_board_info __initdata omap3pandora_i2c3_boardinfo[] = {
 718         {
 719                 I2C_BOARD_INFO("vsense", 0x66),
 720                 .flags = I2C_CLIENT_WAKE,
 721                 .platform_data = &omap3pandora_nub1_data,
 722         }, {
 723                 I2C_BOARD_INFO("vsense", 0x67),
 724                 .flags = I2C_CLIENT_WAKE,
 725                 .platform_data = &omap3pandora_nub2_data,
 726         }, {
 727                 I2C_BOARD_INFO("bq27500", 0x55),
 728                 .flags = I2C_CLIENT_WAKE,
 729         },
 730 };
 731
 732 static int __init omap3pandora_i2c_init(void)
 733 {
 734         omap3_pmic_get_config(&omap3pandora_twldata,
 735                         TWL_COMMON_PDATA_USB | TWL_COMMON_PDATA_AUDIO,
 736                         TWL_COMMON_REGULATOR_VDAC | TWL_COMMON_REGULATOR_VPLL2);
 737
 738         omap3pandora_twldata.vdac->constraints.apply_uV = true;
 739
 740         omap3pandora_twldata.vpll2->constraints.apply_uV = true;
 741         omap3pandora_twldata.vpll2->num_consumer_supplies =
 742                                         ARRAY_SIZE(pandora_vdds_supplies);
 743         omap3pandora_twldata.vpll2->consumer_supplies = pandora_vdds_supplies;
 744
 745         /* LCD vdd is connected differently on CC */
 746         if (cpu_is_omap3630() || omap_rev() >= OMAP3430_REV_ES3_0)
 747                 pandora_v5v_data.num_consumer_supplies--;
 748         else
 749                 pandora_vaux1.num_consumer_supplies--;
 750
 751         omap3_pmic_init("tps65950", &omap3pandora_twldata);
 752         /* i2c2 pins are not connected */
 753         omap_register_i2c_bus(3, 100, omap3pandora_i2c3_boardinfo,
 754                         ARRAY_SIZE(omap3pandora_i2c3_boardinfo));
 755         return 0;
 756 }
 757
 758 static struct spi_board_info omap3pandora_spi_board_info[] __initdata = {
 759         {
 760                 .modalias               = "tpo_td043mtea1_panel_spi",
 761                 .bus_num                = 1,
 762                 .chip_select            = 1,
 763                 .max_speed_hz           = 375000,
 764                 .platform_data          = &pandora_lcd_device,
 765         }
 766 };
 767
 768 static void __init pandora_wl1251_init(void)
 769 {
 770         struct wl12xx_platform_data pandora_wl1251_pdata;
 771         int ret;
 772
 773         memset(&pandora_wl1251_pdata, 0, sizeof(pandora_wl1251_pdata));
 774
 775         ret = gpio_request_one(PANDORA_WIFI_IRQ_GPIO, GPIOF_IN, "wl1251 irq");
 776         if (ret < 0)
 777                 goto fail;
 778
 779         pandora_wl1251_pdata.irq = gpio_to_irq(PANDORA_WIFI_IRQ_GPIO);
 780         if (pandora_wl1251_pdata.irq < 0)
 781                 goto fail_irq;
 782
 783         pandora_wl1251_pdata.use_eeprom = true;
 784         ret = wl12xx_set_platform_data(&pandora_wl1251_pdata);
 785         if (ret < 0)
 786                 goto fail_irq;
 787
 788         return;
 789
 790 fail_irq:
 791         gpio_free(PANDORA_WIFI_IRQ_GPIO);
 792 fail:
 793         printk(KERN_ERR "wl1251 board initialisation failed\n");
 794 }
 795
 796 static void __init pandora_usb_host_init(void)
 797 {
 798         int ret;
 799
 800         ret = gpio_request_one(PANDORA_EN_USB_5V_GPIO, GPIOF_OUT_INIT_HIGH,
 801                 "ehci vbus");
 802         if (ret < 0)
 803                 pr_err("Cannot set vbus GPIO, ret=%d\n", ret);
 804 }
 805
 806 #include <linux/spi/ads7846.h>
 807 #include <asm/system.h>
 808
 809 static DECLARE_COMPLETION(ts_completion);
 810 static struct timespec ts_last_framedone;
 811 static int pendown_state;
 812
 813 static void vsync_irq_wait_handler(void *data, u32 mask)
 814 {
 815         getnstimeofday(&ts_last_framedone);
 816
 817         /* reliable to read here */
 818         pendown_state = !gpio_get_value(OMAP3_PANDORA_TS_GPIO);
 819
 820         complete(&ts_completion);
 821 }
 822
 823 static void ads7846_wait_for_sync(void)
 824 {
 825         struct timespec now, diff;
 826         u32 diff_us;
 827
 828         getnstimeofday(&now);
 829         diff = timespec_sub(now, ts_last_framedone);
 830         diff_us = diff.tv_nsec / NSEC_PER_USEC + diff.tv_sec * USEC_PER_SEC;
 831         if (diff_us < 1023 || diff_us > 40000)
 832                 /* still blanking or display inactive */
 833                 return;
 834
 835         /* wait for blanking period */
 836         disable_hlt();
 837         wait_for_completion_timeout(&ts_completion, HZ / 30);
 838         enable_hlt();
 839 }
 840
 841 static int pandora_pendown_state(void)
 842 {
 843         static int val_old;
 844         struct timespec now, diff;
 845         u32 diff_us;
 846         int val;
 847         int ret;
 848
 849         /* This line is a noisy mess. It doesn't trigger spuriously, i.e.
 850          * there is no signal when pen is up, but when it's down we have
 851          * white noise of sorts. */
 852         val = !gpio_get_value(OMAP3_PANDORA_TS_GPIO);
 853         pendown_state |= val;
 854
 855         if (in_irq() || in_atomic())
 856                 /* no time to fight noise.. */
 857                 return val | pendown_state;
 858
 859         if (val == 0) {
 860                 getnstimeofday(&now);
 861                 diff = timespec_sub(now, ts_last_framedone);
 862                 diff_us = diff.tv_nsec / NSEC_PER_USEC + diff.tv_sec * USEC_PER_SEC;
 863
 864                 if (diff_us < 40000)
 865                         /* assume pendown_state is up-to-date */
 866                         val = pendown_state;
 867                 else
 868                         pendown_state = 0;
 869         }
 870
 871         if (val != val_old) {
 872                 init_completion(&ts_completion);
 873                 dispc_runtime_get();
 874                 if (val)
 875                         ret = omap_dispc_register_isr(vsync_irq_wait_handler,
 876                                 NULL, DISPC_IRQ_VSYNC);
 877                 else
 878                         ret = omap_dispc_unregister_isr(vsync_irq_wait_handler,
 879                                 NULL, DISPC_IRQ_VSYNC);
 880                 dispc_runtime_put();
 881                 if (ret != 0)
 882                         pr_err("%s: can't (un)register isr: %d %d\n",
 883                                 __func__, val, ret);
 884                 val_old = val;
 885         }
 886
 887         return val;
 888 }
 889
 890 static struct ads7846_platform_data pandora_ads7846_cfg = {
 891         .x_max                  = 0x0fff,
 892         .y_max                  = 0x0fff,
 893         .x_plate_ohms           = 180,
 894         .pressure_max           = 255,
 895         .debounce_max           = 10,
 896         .debounce_tol           = 3,
 897         .debounce_rep           = 1,
 898         .gpio_pendown           = OMAP3_PANDORA_TS_GPIO,
 899         .keep_vref_on           = 1,
 900         .wait_for_sync          = ads7846_wait_for_sync,
 901         .get_pendown_state      = pandora_pendown_state,
 902 };
 903
 904 static struct platform_device pandora_ram_console = {
 905         .name   = "ram_console",
 906         .id     = -1,
 907 };
 908
 909 static struct platform_device pandora_c64_tools = {
 910         .name   = "c64_tools",
 911         .dev    = {
 912                 .coherent_dma_mask = DMA_BIT_MASK(32),
 913         },
 914 };
 915
 916 static struct platform_device *omap3pandora_devices[] __initdata = {
 917         &pandora_leds_gpio,
 918         &pandora_leds_pwm,
 919         &pandora_bl,
 920         &pandora_keys_gpio,
 921         &pandora_vwlan_device,
 922         &pandora_ram_console,
 923         &pandora_c64_tools,
 924 };
 925
 926 static const struct usbhs_omap_board_data usbhs_bdata __initconst = {
 927
 928         .port_mode[0] = OMAP_USBHS_PORT_MODE_UNUSED,
 929         .port_mode[1] = OMAP_EHCI_PORT_MODE_PHY,
 930         .port_mode[2] = OMAP_USBHS_PORT_MODE_UNUSED,
 931
 932         .phy_reset  = true,
 933         .reset_gpio_port[0]  = -EINVAL,
 934         .reset_gpio_port[1]  = 16,
 935         .reset_gpio_port[2]  = -EINVAL
 936 };
 937
 938 #ifdef CONFIG_OMAP_MUX
 939 static struct omap_board_mux board_mux[] __initdata = {
 940         /* enable wakeup for pandora button (GPIO99) */
 941         OMAP3_MUX(CAM_D0, OMAP_INPUT_EN | OMAP_WAKEUP_EN | OMAP_MUX_MODE4),
 942         /* noisy unused signal from LCD cable */
 943         OMAP3_MUX(CAM_VS, OMAP_INPUT_EN | OMAP_PULL_ENA | OMAP_PULL_UP | OMAP_MUX_MODE7),
 944         { .reg_offset = OMAP_MUX_TERMINATOR },
 945 };
 946 #endif
 947
 948 static struct regulator *lid_switch_power;
 949 static struct regulator *v5v_power;
 950 static struct regulator *exp_power;
 951 static bool v5v_power_disable_needed;
 952 static bool exp_power_disable_needed;
 953 static struct delayed_work disable_regulators_work;
 954
 955 #ifdef CONFIG_PM_SLEEP
 956 static int pandora_pm_suspend(struct device *dev)
 957 {
 958         if (!IS_ERR_OR_NULL(lid_switch_power))
 959                 regulator_disable(lid_switch_power);
 960
 961         return 0;
 962 }
 963
 964 static int pandora_pm_resume(struct device *dev)
 965 {
 966         if (!IS_ERR_OR_NULL(lid_switch_power))
 967                 regulator_enable(lid_switch_power);
 968
 969         return 0;
 970 }
 971 #endif
 972
 973 static SIMPLE_DEV_PM_OPS(pandora_pm, pandora_pm_suspend, pandora_pm_resume);
 974
 975 static void pandora_disable_regulators(struct work_struct *work)
 976 {
 977         if (v5v_power_disable_needed)
 978                 regulator_disable(v5v_power);
 979
 980         if (exp_power_disable_needed)
 981                 regulator_disable(exp_power);
 982 }
 983
 984 static int __devinit pandora_pm_probe(struct platform_device *pdev)
 985 {
 986         lid_switch_power = regulator_get(NULL, "lidsw");
 987         if (!IS_ERR(lid_switch_power))
 988                 regulator_enable(lid_switch_power);
 989         else
 990                 dev_err(&pdev->dev, "regulator_get lidsw: %ld\n",
 991                         PTR_ERR(lid_switch_power));
 992
 993         /* if regulators are enabled by the bootloaders, take a reference and
 994          * disable them later, after the boot scripts have a chance to
 995          * reconfigure things if they want to, otherwise leave them off */
 996         v5v_power = regulator_get(NULL, "v5v_force");
 997         if (!IS_ERR(v5v_power)) {
 998                 if (regulator_is_enabled(v5v_power) > 0) {
 999                         v5v_power_disable_needed = true;
1000                         regulator_enable(v5v_power);
1001                 }
1002         }
1003         else {
1004                 dev_err(&pdev->dev, "regulator_get v5v_force: %ld\n",
1005                         PTR_ERR(v5v_power));
1006         }
1007
1008         exp_power = regulator_get(NULL, "exp");
1009         if (!IS_ERR(exp_power)) {
1010                 if (regulator_is_enabled(exp_power) > 0) {
1011                         exp_power_disable_needed = true;
1012                         regulator_enable(exp_power);
1013                 }
1014         }
1015         else {
1016                 dev_err(&pdev->dev, "regulator_get exp: %ld\n",
1017                         PTR_ERR(exp_power));
1018         }
1019
1020         INIT_DELAYED_WORK(&disable_regulators_work,
1021                 pandora_disable_regulators);
1022         schedule_delayed_work(&disable_regulators_work, 30 * HZ);
1023
1024         return 0;
1025 }
1026
1027 static struct platform_driver pandora_pm_driver = {
1028         .probe          = pandora_pm_probe,
1029         .driver         = {
1030                 .name   = "pandora-pm",
1031                 .pm     = &pandora_pm,
1032         },
1033 };
1034
1035 static struct platform_device pandora_pm_dev = {
1036         .name   = "pandora-pm",
1037         .id     = -1,
1038 };
1039
1040 static int __init pandora_pm_drv_reg(void)
1041 {
1042         platform_device_register(&pandora_pm_dev);
1043         return platform_driver_register(&pandora_pm_driver);
1044 }
1045 late_initcall(pandora_pm_drv_reg);
1046
1047 static void __init omap3pandora_init(void)
1048 {
1049         struct omap_sdrc_params *sdrc_params;
1050
1051         omap3_mux_init(board_mux, OMAP_PACKAGE_CBB);
1052         pandora_usb_host_init();
1053         omap3pandora_i2c_init();
1054         pandora_wl1251_init();
1055         platform_add_devices(omap3pandora_devices,
1056                         ARRAY_SIZE(omap3pandora_devices));
1057         omap_display_init(&pandora_dss_data);
1058         omap_serial_init();
1059
1060         sdrc_params = mt46h32m32lf6_sdrc_params;
1061         if (cpu_is_omap3630() || omap_rev() >= OMAP3430_REV_ES3_0)
1062                 sdrc_params = mt29c4g96mazapcjg5_sdrc_params;
1063         omap_sdrc_init(sdrc_params, sdrc_params);
1064
1065         spi_register_board_info(omap3pandora_spi_board_info,
1066                         ARRAY_SIZE(omap3pandora_spi_board_info));
1067         omap_ads7846_init(1, OMAP3_PANDORA_TS_GPIO, 31, &pandora_ads7846_cfg);
1068         usbhs_init(&usbhs_bdata);
1069         usb_musb_init(NULL);
1070         gpmc_nand_init(&pandora_nand_data);
1071
1072         /* Ensure SDRC pins are mux'd for self-refresh */
1073         omap_mux_init_signal("sdrc_cke0", OMAP_PIN_OUTPUT);
1074         omap_mux_init_signal("sdrc_cke1", OMAP_PIN_OUTPUT);
1075 }
1076
1077 #ifdef CONFIG_PROC_FS
1078 #include <linux/proc_fs.h>
1079 #include <linux/uaccess.h>
1080
1081 static bool v5v_power_proc_enabled;
1082 static bool exp_power_proc_enabled;
1083
1084 static int v5v_enable_read(char *page, char **start, off_t off,
1085                 int count, int *eof, void *data)
1086 {
1087         if (IS_ERR_OR_NULL(v5v_power))
1088                 return -ENODEV;
1089
1090         *eof = 1;
1091         return sprintf(page, "%d\n", v5v_power_proc_enabled);
1092 }
1093
1094 static int v5v_enable_write(struct file *file, const char __user *buffer,
1095                 unsigned long count, void *data)
1096 {
1097         char buff[32];
1098         long val;
1099         int ret;
1100
1101         if (IS_ERR_OR_NULL(v5v_power))
1102                 return -ENODEV;
1103
1104         count = strncpy_from_user(buff, buffer,
1105                         count < sizeof(buff) ? count : sizeof(buff) - 1);
1106         buff[count] = 0;
1107
1108         ret = strict_strtol(buff, 0, &val);
1109         if (ret < 0)
1110                 return ret;
1111
1112         val = !!val;
1113         if (val == v5v_power_proc_enabled)
1114                 return count;
1115         if (val)
1116                 ret = regulator_enable(v5v_power);
1117         else
1118                 ret = regulator_disable(v5v_power);
1119         if (ret < 0)
1120                 return ret;
1121
1122         v5v_power_proc_enabled = val;
1123         return count;
1124 }
1125
1126 static int exp_power_read(char *page, char **start, off_t off,
1127                 int count, int *eof, void *data)
1128 {
1129         int ret = 0;
1130
1131         if (IS_ERR_OR_NULL(exp_power))
1132                 return -ENODEV;
1133
1134         if (regulator_is_enabled(exp_power) > 0) {
1135                 ret = regulator_get_voltage(exp_power);
1136                 if (ret < 0)
1137                         return ret;
1138                 ret /= 1000;
1139         }
1140
1141         *eof = 1;
1142         return sprintf(page, "%d\n", ret);
1143 }
1144
1145 static int exp_power_write(struct file *file, const char __user *buffer,
1146                 unsigned long count, void *data)
1147 {
1148         char buff[32];
1149         bool enable;
1150         long val;
1151         int ret;
1152
1153         if (IS_ERR_OR_NULL(exp_power))
1154                 return -ENODEV;
1155
1156         count = strncpy_from_user(buff, buffer,
1157                         count < sizeof(buff) ? count : sizeof(buff) - 1);
1158         buff[count] = 0;
1159
1160         ret = strict_strtol(buff, 0, &val);
1161         if (ret < 0)
1162                 return ret;
1163
1164         if (val != 0) {
1165                 val *= 1000;
1166                 ret = regulator_set_voltage(exp_power, val, val);
1167                 if (ret < 0)
1168                         return ret;
1169         }
1170         enable = !!val;
1171         if (enable == exp_power_proc_enabled)
1172                 return count;
1173         if (enable)
1174                 ret = regulator_enable(exp_power);
1175         else
1176                 ret = regulator_disable(exp_power);
1177         if (ret < 0)
1178                 return ret;
1179
1180         exp_power_proc_enabled = enable;
1181         return count;
1182 }
1183
1184 static int __init proc_pandora_init(void)
1185 {
1186         struct proc_dir_entry *root, *ret;
1187
1188         /* HACK: create it here, so that others don't need to bother */
1189         root = proc_mkdir("pandora", NULL);
1190         if (root == NULL)
1191                 return -ENOMEM;
1192
1193         ret = create_proc_entry("always_enable_5v", S_IWUSR | S_IRUGO, root);
1194         if (ret != NULL) {
1195                 ret->read_proc = v5v_enable_read;
1196                 ret->write_proc = v5v_enable_write;
1197         }
1198
1199         ret = create_proc_entry("exp_power_mv", S_IWUSR | S_IRUGO, root);
1200         if (ret != NULL) {
1201                 ret->read_proc = exp_power_read;
1202                 ret->write_proc = exp_power_write;
1203         }
1204
1205         return 0;
1206 }
1207 fs_initcall(proc_pandora_init);
1208 #endif
1209
1210 /* for debug.. */
1211 #include <../drivers/staging/android/persistent_ram.h>
1212
1213 struct persistent_ram_descriptor ram_console_desc = {
1214         .name           = "ram_console",
1215         .size           = 0x20000,
1216 };
1217
1218 struct persistent_ram ram_console_ram = {
1219         .start          = 0x80fe0000,
1220         .size           = 0x20000,
1221         .num_descs      = 1,
1222         .descs          = &ram_console_desc,
1223 };
1224
1225 void __init pandora_reserve(void)
1226 {
1227         omap_reserve();
1228         dma_declare_contiguous(&pandora_c64_tools.dev, 4 * SZ_1M, 0x86000000, 0);
1229 #ifdef CONFIG_ANDROID_PERSISTENT_RAM
1230         persistent_ram_early_init(&ram_console_ram);
1231 #endif
1232 }
1233
1234 MACHINE_START(OMAP3_PANDORA, "Pandora Handheld Console")
1235         .atag_offset    = 0x100,
1236         .reserve        = pandora_reserve,
1237         .map_io         = omap3_map_io,
1238         .init_early     = omap35xx_init_early,
1239         .init_irq       = omap3_init_irq,
1240         .init_machine   = omap3pandora_init,
1241         .timer          = &omap3_timer,
1242 MACHINE_END