arch/arm/mach-pxa/mioa701.c

   1 /*
   2  * Handles the Mitac Mio A701 Board
   3  *
   4  * Copyright (C) 2008 Robert Jarzmik
   5  *
   6  * This program is free software; you can redistribute it and/or modify
   7  * it under the terms of the GNU General Public License as published by
   8  * the Free Software Foundation; either version 2 of the License, or
   9  * (at your option) any later version.
  10  *
  11  * This program is distributed in the hope that it will be useful,
  12  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14  * GNU General Public License for more details.
  15  *
  16  * You should have received a copy of the GNU General Public License
  17  * along with this program; if not, write to the Free Software
  18  * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
  19  *
  20  */
  21
  22 #include <linux/kernel.h>
  23 #include <linux/init.h>
  24 #include <linux/platform_device.h>
  25 #include <linux/sysdev.h>
  26 #include <linux/input.h>
  27 #include <linux/delay.h>
  28 #include <linux/gpio_keys.h>
  29 #include <linux/pwm_backlight.h>
  30 #include <linux/rtc.h>
  31 #include <linux/leds.h>
  32 #include <linux/gpio.h>
  33 #include <linux/interrupt.h>
  34 #include <linux/irq.h>
  35 #include <linux/pda_power.h>
  36 #include <linux/power_supply.h>
  37 #include <linux/wm97xx_batt.h>
  38 #include <linux/mtd/physmap.h>
  39 #include <linux/usb/gpio_vbus.h>
  40 #include <linux/regulator/max1586.h>
  41
  42 #include <asm/mach-types.h>
  43 #include <asm/mach/arch.h>
  44
  45 #include <mach/pxa27x.h>
  46 #include <mach/regs-rtc.h>
  47 #include <mach/pxa27x_keypad.h>
  48 #include <mach/pxafb.h>
  49 #include <mach/mmc.h>
  50 #include <mach/udc.h>
  51 #include <mach/pxa27x-udc.h>
  52 #include <plat/i2c.h>
  53 #include <mach/camera.h>
  54 #include <mach/audio.h>
  55 #include <media/soc_camera.h>
  56
  57 #include <mach/mioa701.h>
  58
  59 #include "generic.h"
  60 #include "devices.h"
  61
  62 static unsigned long mioa701_pin_config[] = {
  63         /* Mio global */
  64         MIO_CFG_OUT(GPIO9_CHARGE_EN, AF0, DRIVE_LOW),
  65         MIO_CFG_OUT(GPIO18_POWEROFF, AF0, DRIVE_LOW),
  66         MFP_CFG_OUT(GPIO3, AF0, DRIVE_HIGH),
  67         MFP_CFG_OUT(GPIO4, AF0, DRIVE_HIGH),
  68         MIO_CFG_IN(GPIO80_MAYBE_CHARGE_VDROP, AF0),
  69
  70         /* Backlight PWM 0 */
  71         GPIO16_PWM0_OUT,
  72
  73         /* MMC */
  74         GPIO32_MMC_CLK,
  75         GPIO92_MMC_DAT_0,
  76         GPIO109_MMC_DAT_1,
  77         GPIO110_MMC_DAT_2,
  78         GPIO111_MMC_DAT_3,
  79         GPIO112_MMC_CMD,
  80         MIO_CFG_IN(GPIO78_SDIO_RO, AF0),
  81         MIO_CFG_IN(GPIO15_SDIO_INSERT, AF0),
  82         MIO_CFG_OUT(GPIO91_SDIO_EN, AF0, DRIVE_LOW),
  83
  84         /* USB */
  85         MIO_CFG_IN(GPIO13_nUSB_DETECT, AF0),
  86         MIO_CFG_OUT(GPIO22_USB_ENABLE, AF0, DRIVE_LOW),
  87
  88         /* LCD */
  89         GPIO58_LCD_LDD_0,
  90         GPIO59_LCD_LDD_1,
  91         GPIO60_LCD_LDD_2,
  92         GPIO61_LCD_LDD_3,
  93         GPIO62_LCD_LDD_4,
  94         GPIO63_LCD_LDD_5,
  95         GPIO64_LCD_LDD_6,
  96         GPIO65_LCD_LDD_7,
  97         GPIO66_LCD_LDD_8,
  98         GPIO67_LCD_LDD_9,
  99         GPIO68_LCD_LDD_10,
 100         GPIO69_LCD_LDD_11,
 101         GPIO70_LCD_LDD_12,
 102         GPIO71_LCD_LDD_13,
 103         GPIO72_LCD_LDD_14,
 104         GPIO73_LCD_LDD_15,
 105         GPIO74_LCD_FCLK,
 106         GPIO75_LCD_LCLK,
 107         GPIO76_LCD_PCLK,
 108
 109         /* QCI */
 110         GPIO12_CIF_DD_7,
 111         GPIO17_CIF_DD_6,
 112         GPIO50_CIF_DD_3,
 113         GPIO51_CIF_DD_2,
 114         GPIO52_CIF_DD_4,
 115         GPIO53_CIF_MCLK,
 116         GPIO54_CIF_PCLK,
 117         GPIO55_CIF_DD_1,
 118         GPIO81_CIF_DD_0,
 119         GPIO82_CIF_DD_5,
 120         GPIO84_CIF_FV,
 121         GPIO85_CIF_LV,
 122
 123         /* Bluetooth */
 124         MIO_CFG_IN(GPIO14_BT_nACTIVITY, AF0),
 125         GPIO44_BTUART_CTS,
 126         GPIO42_BTUART_RXD,
 127         GPIO45_BTUART_RTS,
 128         GPIO43_BTUART_TXD,
 129         MIO_CFG_OUT(GPIO83_BT_ON, AF0, DRIVE_LOW),
 130         MIO_CFG_OUT(GPIO77_BT_UNKNOWN1, AF0, DRIVE_HIGH),
 131         MIO_CFG_OUT(GPIO86_BT_MAYBE_nRESET, AF0, DRIVE_HIGH),
 132
 133         /* GPS */
 134         MIO_CFG_OUT(GPIO23_GPS_UNKNOWN1, AF0, DRIVE_LOW),
 135         MIO_CFG_OUT(GPIO26_GPS_ON, AF0, DRIVE_LOW),
 136         MIO_CFG_OUT(GPIO27_GPS_RESET, AF0, DRIVE_LOW),
 137         MIO_CFG_OUT(GPIO106_GPS_UNKNOWN2, AF0, DRIVE_LOW),
 138         MIO_CFG_OUT(GPIO107_GPS_UNKNOWN3, AF0, DRIVE_LOW),
 139         GPIO46_STUART_RXD,
 140         GPIO47_STUART_TXD,
 141
 142         /* GSM */
 143         MIO_CFG_OUT(GPIO24_GSM_MOD_RESET_CMD, AF0, DRIVE_LOW),
 144         MIO_CFG_OUT(GPIO88_GSM_nMOD_ON_CMD, AF0, DRIVE_HIGH),
 145         MIO_CFG_OUT(GPIO90_GSM_nMOD_OFF_CMD, AF0, DRIVE_HIGH),
 146         MIO_CFG_OUT(GPIO114_GSM_nMOD_DTE_UART_STATE, AF0, DRIVE_HIGH),
 147         MIO_CFG_IN(GPIO25_GSM_MOD_ON_STATE, AF0),
 148         MIO_CFG_IN(GPIO113_GSM_EVENT, AF0) | WAKEUP_ON_EDGE_BOTH,
 149         GPIO34_FFUART_RXD,
 150         GPIO35_FFUART_CTS,
 151         GPIO36_FFUART_DCD,
 152         GPIO37_FFUART_DSR,
 153         GPIO39_FFUART_TXD,
 154         GPIO40_FFUART_DTR,
 155         GPIO41_FFUART_RTS,
 156
 157         /* Sound */
 158         GPIO89_AC97_SYSCLK,
 159         MIO_CFG_IN(GPIO12_HPJACK_INSERT, AF0),
 160
 161         /* Leds */
 162         MIO_CFG_OUT(GPIO10_LED_nCharging, AF0, DRIVE_HIGH),
 163         MIO_CFG_OUT(GPIO97_LED_nBlue, AF0, DRIVE_HIGH),
 164         MIO_CFG_OUT(GPIO98_LED_nOrange, AF0, DRIVE_HIGH),
 165         MIO_CFG_OUT(GPIO82_LED_nVibra, AF0, DRIVE_HIGH),
 166         MIO_CFG_OUT(GPIO115_LED_nKeyboard, AF0, DRIVE_HIGH),
 167
 168         /* Keyboard */
 169         MIO_CFG_IN(GPIO0_KEY_POWER, AF0) | WAKEUP_ON_EDGE_BOTH,
 170         MIO_CFG_IN(GPIO93_KEY_VOLUME_UP, AF0),
 171         MIO_CFG_IN(GPIO94_KEY_VOLUME_DOWN, AF0),
 172         GPIO100_KP_MKIN_0,
 173         GPIO101_KP_MKIN_1,
 174         GPIO102_KP_MKIN_2,
 175         GPIO103_KP_MKOUT_0,
 176         GPIO104_KP_MKOUT_1,
 177         GPIO105_KP_MKOUT_2,
 178
 179         /* I2C */
 180         GPIO117_I2C_SCL,
 181         GPIO118_I2C_SDA,
 182
 183         /* Unknown */
 184         MFP_CFG_IN(GPIO20, AF0),
 185         MFP_CFG_IN(GPIO21, AF0),
 186         MFP_CFG_IN(GPIO33, AF0),
 187         MFP_CFG_OUT(GPIO49, AF0, DRIVE_HIGH),
 188         MFP_CFG_OUT(GPIO57, AF0, DRIVE_HIGH),
 189         MFP_CFG_IN(GPIO96, AF0),
 190         MFP_CFG_OUT(GPIO116, AF0, DRIVE_HIGH),
 191 };
 192
 193 #define MIO_GPIO_IN(num, _desc) \
 194         { .gpio = (num), .dir = 0, .desc = (_desc) }
 195 #define MIO_GPIO_OUT(num, _init, _desc) \
 196         { .gpio = (num), .dir = 1, .init = (_init), .desc = (_desc) }
 197 struct gpio_ress {
 198         unsigned gpio : 8;
 199         unsigned dir : 1;
 200         unsigned init : 1;
 201         char *desc;
 202 };
 203
 204 static int mio_gpio_request(struct gpio_ress *gpios, int size)
 205 {
 206         int i, rc = 0;
 207         int gpio;
 208         int dir;
 209
 210         for (i = 0; (!rc) && (i < size); i++) {
 211                 gpio = gpios[i].gpio;
 212                 dir = gpios[i].dir;
 213                 rc = gpio_request(gpio, gpios[i].desc);
 214                 if (rc) {
 215                         printk(KERN_ERR "Error requesting GPIO %d(%s) : %d\n",
 216                                gpio, gpios[i].desc, rc);
 217                         continue;
 218                 }
 219                 if (dir)
 220                         gpio_direction_output(gpio, gpios[i].init);
 221                 else
 222                         gpio_direction_input(gpio);
 223         }
 224         while ((rc) && (--i >= 0))
 225                 gpio_free(gpios[i].gpio);
 226         return rc;
 227 }
 228
 229 static void mio_gpio_free(struct gpio_ress *gpios, int size)
 230 {
 231         int i;
 232
 233         for (i = 0; i < size; i++)
 234                 gpio_free(gpios[i].gpio);
 235 }
 236
 237 /* LCD Screen and Backlight */
 238 static struct platform_pwm_backlight_data mioa701_backlight_data = {
 239         .pwm_id         = 0,
 240         .max_brightness = 100,
 241         .dft_brightness = 50,
 242         .pwm_period_ns  = 4000 * 1024,  /* Fl = 250kHz */
 243 };
 244
 245 /*
 246  * LTM0305A776C LCD panel timings
 247  *
 248  * see:
 249  *  - the LTM0305A776C datasheet,
 250  *  - and the PXA27x Programmers' manual
 251  */
 252 static struct pxafb_mode_info mioa701_ltm0305a776c = {
 253         .pixclock               = 220000,       /* CLK=4.545 MHz */
 254         .xres                   = 240,
 255         .yres                   = 320,
 256         .bpp                    = 16,
 257         .hsync_len              = 4,
 258         .vsync_len              = 2,
 259         .left_margin            = 6,
 260         .right_margin           = 4,
 261         .upper_margin           = 5,
 262         .lower_margin           = 3,
 263 };
 264
 265 static void mioa701_lcd_power(int on, struct fb_var_screeninfo *si)
 266 {
 267         gpio_set_value(GPIO87_LCD_POWER, on);
 268 }
 269
 270 static struct pxafb_mach_info mioa701_pxafb_info = {
 271         .modes                  = &mioa701_ltm0305a776c,
 272         .num_modes              = 1,
 273         .lcd_conn               = LCD_COLOR_TFT_16BPP | LCD_PCLK_EDGE_FALL,
 274         .pxafb_lcd_power        = mioa701_lcd_power,
 275 };
 276
 277 /*
 278  * Keyboard configuration
 279  */
 280 static unsigned int mioa701_matrix_keys[] = {
 281         KEY(0, 0, KEY_UP),
 282         KEY(0, 1, KEY_RIGHT),
 283         KEY(0, 2, KEY_MEDIA),
 284         KEY(1, 0, KEY_DOWN),
 285         KEY(1, 1, KEY_ENTER),
 286         KEY(1, 2, KEY_CONNECT), /* GPS key */
 287         KEY(2, 0, KEY_LEFT),
 288         KEY(2, 1, KEY_PHONE),   /* Phone Green key */
 289         KEY(2, 2, KEY_CAMERA)   /* Camera key */
 290 };
 291 static struct pxa27x_keypad_platform_data mioa701_keypad_info = {
 292         .matrix_key_rows = 3,
 293         .matrix_key_cols = 3,
 294         .matrix_key_map = mioa701_matrix_keys,
 295         .matrix_key_map_size = ARRAY_SIZE(mioa701_matrix_keys),
 296 };
 297
 298 /*
 299  * GPIO Key Configuration
 300  */
 301 #define MIO_KEY(key, _gpio, _desc, _wakeup) \
 302         { .code = (key), .gpio = (_gpio), .active_low = 0, \
 303         .desc = (_desc), .type = EV_KEY, .wakeup = (_wakeup) }
 304 static struct gpio_keys_button mioa701_button_table[] = {
 305         MIO_KEY(KEY_EXIT, GPIO0_KEY_POWER, "Power button", 1),
 306         MIO_KEY(KEY_VOLUMEUP, GPIO93_KEY_VOLUME_UP, "Volume up", 0),
 307         MIO_KEY(KEY_VOLUMEDOWN, GPIO94_KEY_VOLUME_DOWN, "Volume down", 0),
 308         MIO_KEY(KEY_HP, GPIO12_HPJACK_INSERT, "HP jack detect", 0)
 309 };
 310
 311 static struct gpio_keys_platform_data mioa701_gpio_keys_data = {
 312         .buttons  = mioa701_button_table,
 313         .nbuttons = ARRAY_SIZE(mioa701_button_table),
 314 };
 315
 316 /*
 317  * Leds and vibrator
 318  */
 319 #define ONE_LED(_gpio, _name) \
 320 { .gpio = (_gpio), .name = (_name), .active_low = true }
 321 static struct gpio_led gpio_leds[] = {
 322         ONE_LED(GPIO10_LED_nCharging, "mioa701:charging"),
 323         ONE_LED(GPIO97_LED_nBlue, "mioa701:blue"),
 324         ONE_LED(GPIO98_LED_nOrange, "mioa701:orange"),
 325         ONE_LED(GPIO82_LED_nVibra, "mioa701:vibra"),
 326         ONE_LED(GPIO115_LED_nKeyboard, "mioa701:keyboard")
 327 };
 328
 329 static struct gpio_led_platform_data gpio_led_info = {
 330         .leds = gpio_leds,
 331         .num_leds = ARRAY_SIZE(gpio_leds),
 332 };
 333
 334 /*
 335  * GSM Sagem XS200 chip
 336  *
 337  * GSM handling was purged from kernel. For history, this is the way to go :
 338  *   - init : GPIO24_GSM_MOD_RESET_CMD = 0, GPIO114_GSM_nMOD_DTE_UART_STATE = 1
 339  *            GPIO88_GSM_nMOD_ON_CMD = 1, GPIO90_GSM_nMOD_OFF_CMD = 1
 340  *   - reset : GPIO24_GSM_MOD_RESET_CMD = 1, msleep(100),
 341  *             GPIO24_GSM_MOD_RESET_CMD = 0
 342  *   - turn on  : GPIO88_GSM_nMOD_ON_CMD = 0, msleep(1000),
 343  *                GPIO88_GSM_nMOD_ON_CMD = 1
 344  *   - turn off : GPIO90_GSM_nMOD_OFF_CMD = 0, msleep(1000),
 345  *                GPIO90_GSM_nMOD_OFF_CMD = 1
 346  */
 347 static int is_gsm_on(void)
 348 {
 349         int is_on;
 350
 351         is_on = !!gpio_get_value(GPIO25_GSM_MOD_ON_STATE);
 352         return is_on;
 353 }
 354
 355 irqreturn_t gsm_on_irq(int irq, void *p)
 356 {
 357         printk(KERN_DEBUG "Mioa701: GSM status changed to %s\n",
 358                is_gsm_on() ? "on" : "off");
 359         return IRQ_HANDLED;
 360 }
 361
 362 struct gpio_ress gsm_gpios[] = {
 363         MIO_GPIO_IN(GPIO25_GSM_MOD_ON_STATE, "GSM state"),
 364         MIO_GPIO_IN(GPIO113_GSM_EVENT, "GSM event"),
 365 };
 366
 367 static int __init gsm_init(void)
 368 {
 369         int rc;
 370
 371         rc = mio_gpio_request(ARRAY_AND_SIZE(gsm_gpios));
 372         if (rc)
 373                 goto err_gpio;
 374         rc = request_irq(gpio_to_irq(GPIO25_GSM_MOD_ON_STATE), gsm_on_irq,
 375                          IRQF_TRIGGER_RISING | IRQF_TRIGGER_FALLING,
 376                          "GSM XS200 Power Irq", NULL);
 377         if (rc)
 378                 goto err_irq;
 379
 380         gpio_set_wake(GPIO113_GSM_EVENT, 1);
 381         return 0;
 382
 383 err_irq:
 384         printk(KERN_ERR "Mioa701: Can't request GSM_ON irq\n");
 385         mio_gpio_free(ARRAY_AND_SIZE(gsm_gpios));
 386 err_gpio:
 387         printk(KERN_ERR "Mioa701: gsm not available\n");
 388         return rc;
 389 }
 390
 391 static void gsm_exit(void)
 392 {
 393         free_irq(gpio_to_irq(GPIO25_GSM_MOD_ON_STATE), NULL);
 394         mio_gpio_free(ARRAY_AND_SIZE(gsm_gpios));
 395 }
 396
 397 /*
 398  * Bluetooth BRF6150 chip
 399  *
 400  * BT handling was purged from kernel. For history, this is the way to go :
 401  * - turn on  : GPIO83_BT_ON = 1
 402  * - turn off : GPIO83_BT_ON = 0
 403  */
 404
 405 /*
 406  * GPS Sirf Star III chip
 407  *
 408  * GPS handling was purged from kernel. For history, this is the way to go :
 409  * - init : GPIO23_GPS_UNKNOWN1 = 1, GPIO26_GPS_ON = 0, GPIO27_GPS_RESET = 0
 410  *          GPIO106_GPS_UNKNOWN2 = 0, GPIO107_GPS_UNKNOWN3 = 0
 411  * - turn on  : GPIO27_GPS_RESET = 1, GPIO26_GPS_ON = 1
 412  * - turn off : GPIO26_GPS_ON = 0, GPIO27_GPS_RESET = 0
 413  */
 414
 415 /*
 416  * USB UDC
 417  */
 418 static int is_usb_connected(void)
 419 {
 420         return !gpio_get_value(GPIO13_nUSB_DETECT);
 421 }
 422
 423 static struct pxa2xx_udc_mach_info mioa701_udc_info = {
 424         .udc_is_connected = is_usb_connected,
 425         .gpio_pullup      = GPIO22_USB_ENABLE,
 426 };
 427
 428 struct gpio_vbus_mach_info gpio_vbus_data = {
 429         .gpio_vbus = GPIO13_nUSB_DETECT,
 430         .gpio_vbus_inverted = 1,
 431         .gpio_pullup = -1,
 432 };
 433
 434 /*
 435  * SDIO/MMC Card controller
 436  */
 437 static void mci_setpower(struct device *dev, unsigned int vdd)
 438 {
 439         struct pxamci_platform_data *p_d = dev->platform_data;
 440
 441         if ((1 << vdd) & p_d->ocr_mask)
 442                 gpio_set_value(GPIO91_SDIO_EN, 1);      /* enable SDIO power */
 443         else
 444                 gpio_set_value(GPIO91_SDIO_EN, 0);      /* disable SDIO power */
 445 }
 446
 447 static int mci_get_ro(struct device *dev)
 448 {
 449         return gpio_get_value(GPIO78_SDIO_RO);
 450 }
 451
 452 struct gpio_ress mci_gpios[] = {
 453         MIO_GPIO_IN(GPIO78_SDIO_RO,     "SDIO readonly detect"),
 454         MIO_GPIO_IN(GPIO15_SDIO_INSERT, "SDIO insertion detect"),
 455         MIO_GPIO_OUT(GPIO91_SDIO_EN, 0, "SDIO power enable")
 456 };
 457
 458 static void mci_exit(struct device *dev, void *data)
 459 {
 460         mio_gpio_free(ARRAY_AND_SIZE(mci_gpios));
 461         free_irq(gpio_to_irq(GPIO15_SDIO_INSERT), data);
 462 }
 463
 464 static struct pxamci_platform_data mioa701_mci_info;
 465
 466 /**
 467  * The card detect interrupt isn't debounced so we delay it by 250ms
 468  * to give the card a chance to fully insert/eject.
 469  */
 470 static int mci_init(struct device *dev, irq_handler_t detect_int, void *data)
 471 {
 472         int rc;
 473         int irq = gpio_to_irq(GPIO15_SDIO_INSERT);
 474
 475         rc = mio_gpio_request(ARRAY_AND_SIZE(mci_gpios));
 476         if (rc)
 477                 goto err_gpio;
 478         /* enable RE/FE interrupt on card insertion and removal */
 479         rc = request_irq(irq, detect_int,
 480                          IRQF_DISABLED | IRQF_TRIGGER_RISING |
 481                          IRQF_TRIGGER_FALLING,
 482                          "MMC card detect", data);
 483         if (rc)
 484                 goto err_irq;
 485
 486         mioa701_mci_info.detect_delay = msecs_to_jiffies(250);
 487         return 0;
 488
 489 err_irq:
 490         dev_err(dev, "mioa701_mci_init: MMC/SD:"
 491                 " can't request MMC card detect IRQ\n");
 492         mio_gpio_free(ARRAY_AND_SIZE(mci_gpios));
 493 err_gpio:
 494         return rc;
 495 }
 496
 497 static struct pxamci_platform_data mioa701_mci_info = {
 498         .ocr_mask = MMC_VDD_32_33 | MMC_VDD_33_34,
 499         .init     = mci_init,
 500         .get_ro   = mci_get_ro,
 501         .setpower = mci_setpower,
 502         .exit     = mci_exit,
 503 };
 504
 505 /* FlashRAM */
 506 static struct resource strataflash_resource = {
 507         .start = PXA_CS0_PHYS,
 508         .end   = PXA_CS0_PHYS + SZ_64M - 1,
 509         .flags = IORESOURCE_MEM,
 510 };
 511
 512 static struct physmap_flash_data strataflash_data = {
 513         .width = 2,
 514         /* .set_vpp = mioa701_set_vpp, */
 515 };
 516
 517 static struct platform_device strataflash = {
 518         .name          = "physmap-flash",
 519         .id            = -1,
 520         .resource      = &strataflash_resource,
 521         .num_resources = 1,
 522         .dev = {
 523                 .platform_data = &strataflash_data,
 524         },
 525 };
 526
 527 /*
 528  * Suspend/Resume bootstrap management
 529  *
 530  * MIO A701 reboot sequence is highly ROM dependant. From the one dissassembled,
 531  * this sequence is as follows :
 532  *   - disables interrupts
 533  *   - initialize SDRAM (self refresh RAM into active RAM)
 534  *   - initialize GPIOs (depends on value at 0xa020b020)
 535  *   - initialize coprossessors
 536  *   - if edge detect on PWR_SCL(GPIO3), then proceed to cold start
 537  *   - or if value at 0xa020b000 not equal to 0x0f0f0f0f, proceed to cold start
 538  *   - else do a resume, ie. jump to addr 0xa0100000
 539  */
 540 #define RESUME_ENABLE_ADDR      0xa020b000
 541 #define RESUME_ENABLE_VAL       0x0f0f0f0f
 542 #define RESUME_BT_ADDR          0xa020b020
 543 #define RESUME_UNKNOWN_ADDR     0xa020b024
 544 #define RESUME_VECTOR_ADDR      0xa0100000
 545 #define BOOTSTRAP_WORDS         mioa701_bootstrap_lg/4
 546
 547 static u32 *save_buffer;
 548
 549 static void install_bootstrap(void)
 550 {
 551         int i;
 552         u32 *rom_bootstrap  = phys_to_virt(RESUME_VECTOR_ADDR);
 553         u32 *src = &mioa701_bootstrap;
 554
 555         for (i = 0; i < BOOTSTRAP_WORDS; i++)
 556                 rom_bootstrap[i] = src[i];
 557 }
 558
 559
 560 static int mioa701_sys_suspend(struct sys_device *sysdev, pm_message_t state)
 561 {
 562         int i = 0, is_bt_on;
 563         u32 *mem_resume_vector  = phys_to_virt(RESUME_VECTOR_ADDR);
 564         u32 *mem_resume_enabler = phys_to_virt(RESUME_ENABLE_ADDR);
 565         u32 *mem_resume_bt      = phys_to_virt(RESUME_BT_ADDR);
 566         u32 *mem_resume_unknown = phys_to_virt(RESUME_UNKNOWN_ADDR);
 567
 568         /* Devices prepare suspend */
 569         is_bt_on = !!gpio_get_value(GPIO83_BT_ON);
 570         pxa2xx_mfp_set_lpm(GPIO83_BT_ON,
 571                            is_bt_on ? MFP_LPM_DRIVE_HIGH : MFP_LPM_DRIVE_LOW);
 572
 573         for (i = 0; i < BOOTSTRAP_WORDS; i++)
 574                 save_buffer[i] = mem_resume_vector[i];
 575         save_buffer[i++] = *mem_resume_enabler;
 576         save_buffer[i++] = *mem_resume_bt;
 577         save_buffer[i++] = *mem_resume_unknown;
 578
 579         *mem_resume_enabler = RESUME_ENABLE_VAL;
 580         *mem_resume_bt      = is_bt_on;
 581
 582         install_bootstrap();
 583         return 0;
 584 }
 585
 586 static int mioa701_sys_resume(struct sys_device *sysdev)
 587 {
 588         int i = 0;
 589         u32 *mem_resume_vector  = phys_to_virt(RESUME_VECTOR_ADDR);
 590         u32 *mem_resume_enabler = phys_to_virt(RESUME_ENABLE_ADDR);
 591         u32 *mem_resume_bt      = phys_to_virt(RESUME_BT_ADDR);
 592         u32 *mem_resume_unknown = phys_to_virt(RESUME_UNKNOWN_ADDR);
 593
 594         for (i = 0; i < BOOTSTRAP_WORDS; i++)
 595                 mem_resume_vector[i] = save_buffer[i];
 596         *mem_resume_enabler = save_buffer[i++];
 597         *mem_resume_bt      = save_buffer[i++];
 598         *mem_resume_unknown = save_buffer[i++];
 599
 600         return 0;
 601 }
 602
 603 static struct sysdev_class mioa701_sysclass = {
 604         .name = "mioa701",
 605 };
 606
 607 static struct sys_device sysdev_bootstrap = {
 608         .cls            = &mioa701_sysclass,
 609 };
 610
 611 static struct sysdev_driver driver_bootstrap = {
 612         .suspend        = &mioa701_sys_suspend,
 613         .resume         = &mioa701_sys_resume,
 614 };
 615
 616 static int __init bootstrap_init(void)
 617 {
 618         int rc;
 619         int save_size = mioa701_bootstrap_lg + (sizeof(u32) * 3);
 620
 621         rc = sysdev_class_register(&mioa701_sysclass);
 622         if (rc) {
 623                 printk(KERN_ERR "Failed registering mioa701 sys class\n");
 624                 return -ENODEV;
 625         }
 626         rc = sysdev_register(&sysdev_bootstrap);
 627         if (rc) {
 628                 printk(KERN_ERR "Failed registering mioa701 sys device\n");
 629                 return -ENODEV;
 630         }
 631         rc = sysdev_driver_register(&mioa701_sysclass, &driver_bootstrap);
 632         if (rc) {
 633                 printk(KERN_ERR "Failed registering PMU sys driver\n");
 634                 return -ENODEV;
 635         }
 636
 637         save_buffer = kmalloc(save_size, GFP_KERNEL);
 638         if (!save_buffer)
 639                 return -ENOMEM;
 640         printk(KERN_INFO "MioA701: allocated %d bytes for bootstrap\n",
 641                save_size);
 642         return 0;
 643 }
 644
 645 static void bootstrap_exit(void)
 646 {
 647         kfree(save_buffer);
 648         sysdev_driver_unregister(&mioa701_sysclass, &driver_bootstrap);
 649         sysdev_unregister(&sysdev_bootstrap);
 650         sysdev_class_unregister(&mioa701_sysclass);
 651
 652         printk(KERN_CRIT "Unregistering mioa701 suspend will hang next"
 653                "resume !!!\n");
 654 }
 655
 656 /*
 657  * Power Supply
 658  */
 659 static char *supplicants[] = {
 660         "mioa701_battery"
 661 };
 662
 663 static int is_ac_connected(void)
 664 {
 665         return gpio_get_value(GPIO96_AC_DETECT);
 666 }
 667
 668 static void mioa701_set_charge(int flags)
 669 {
 670         gpio_set_value(GPIO9_CHARGE_EN, (flags == PDA_POWER_CHARGE_USB));
 671 }
 672
 673 static struct pda_power_pdata power_pdata = {
 674         .is_ac_online   = is_ac_connected,
 675         .is_usb_online  = is_usb_connected,
 676         .set_charge = mioa701_set_charge,
 677         .supplied_to = supplicants,
 678         .num_supplicants = ARRAY_SIZE(supplicants),
 679 };
 680
 681 static struct resource power_resources[] = {
 682         [0] = {
 683                 .name   = "ac",
 684                 .start  = gpio_to_irq(GPIO96_AC_DETECT),
 685                 .end    = gpio_to_irq(GPIO96_AC_DETECT),
 686                 .flags  = IORESOURCE_IRQ | IORESOURCE_IRQ_HIGHEDGE |
 687                 IORESOURCE_IRQ_LOWEDGE,
 688         },
 689         [1] = {
 690                 .name   = "usb",
 691                 .start  = gpio_to_irq(GPIO13_nUSB_DETECT),
 692                 .end    = gpio_to_irq(GPIO13_nUSB_DETECT),
 693                 .flags  = IORESOURCE_IRQ | IORESOURCE_IRQ_HIGHEDGE |
 694                 IORESOURCE_IRQ_LOWEDGE,
 695         },
 696 };
 697
 698 static struct platform_device power_dev = {
 699         .name           = "pda-power",
 700         .id             = -1,
 701         .resource       = power_resources,
 702         .num_resources  = ARRAY_SIZE(power_resources),
 703         .dev = {
 704                 .platform_data  = &power_pdata,
 705         },
 706 };
 707
 708 static struct wm97xx_batt_info mioa701_battery_data = {
 709         .batt_aux       = WM97XX_AUX_ID1,
 710         .temp_aux       = -1,
 711         .charge_gpio    = -1,
 712         .min_voltage    = 0xc00,
 713         .max_voltage    = 0xfc0,
 714         .batt_tech      = POWER_SUPPLY_TECHNOLOGY_LION,
 715         .batt_div       = 1,
 716         .batt_mult      = 1,
 717         .batt_name      = "mioa701_battery",
 718 };
 719
 720 /*
 721  * Voltage regulation
 722  */
 723 static struct regulator_consumer_supply max1586_consumers[] = {
 724         {
 725                 .supply = "vcc_core",
 726         }
 727 };
 728
 729 static struct regulator_init_data max1586_v3_info = {
 730         .constraints = {
 731                 .name = "vcc_core range",
 732                 .min_uV = 1000000,
 733                 .max_uV = 1705000,
 734                 .always_on = 1,
 735                 .valid_ops_mask = REGULATOR_CHANGE_VOLTAGE,
 736         },
 737         .num_consumer_supplies = ARRAY_SIZE(max1586_consumers),
 738         .consumer_supplies = max1586_consumers,
 739 };
 740
 741 static struct max1586_subdev_data max1586_subdevs[] = {
 742         { .name = "vcc_core", .id = MAX1586_V3,
 743           .platform_data = &max1586_v3_info },
 744 };
 745
 746 static struct max1586_platform_data max1586_info = {
 747         .subdevs = max1586_subdevs,
 748         .num_subdevs = ARRAY_SIZE(max1586_subdevs),
 749         .v3_gain = MAX1586_GAIN_NO_R24, /* 700..1475 mV */
 750 };
 751
 752 /*
 753  * Camera interface
 754  */
 755 struct pxacamera_platform_data mioa701_pxacamera_platform_data = {
 756         .flags  = PXA_CAMERA_MASTER | PXA_CAMERA_DATAWIDTH_8 |
 757                 PXA_CAMERA_PCLK_EN | PXA_CAMERA_MCLK_EN,
 758         .mclk_10khz = 5000,
 759 };
 760
 761 static struct i2c_board_info __initdata mioa701_pi2c_devices[] = {
 762         {
 763                 I2C_BOARD_INFO("max1586", 0x14),
 764                 .platform_data = &max1586_info,
 765         },
 766 };
 767
 768 static struct soc_camera_link iclink = {
 769         .bus_id = 0, /* Must match id in pxa27x_device_camera in device.c */
 770 };
 771
 772 /* Board I2C devices. */
 773 static struct i2c_board_info __initdata mioa701_i2c_devices[] = {
 774         {
 775                 /* Must initialize before the camera(s) */
 776                 I2C_BOARD_INFO("mt9m111", 0x5d),
 777                 .platform_data = &iclink,
 778         },
 779 };
 780
 781 struct i2c_pxa_platform_data i2c_pdata = {
 782         .fast_mode = 1,
 783 };
 784
 785 static pxa2xx_audio_ops_t mioa701_ac97_info = {
 786         .reset_gpio = 95,
 787 };
 788
 789 /*
 790  * Mio global
 791  */
 792
 793 /* Devices */
 794 #define MIO_PARENT_DEV(var, strname, tparent, pdata)    \
 795 static struct platform_device var = {                   \
 796         .name           = strname,                      \
 797         .id             = -1,                           \
 798         .dev            = {                             \
 799                 .platform_data = pdata,                 \
 800                 .parent = tparent,                      \
 801         },                                              \
 802 };
 803 #define MIO_SIMPLE_DEV(var, strname, pdata)     \
 804         MIO_PARENT_DEV(var, strname, NULL, pdata)
 805
 806 MIO_SIMPLE_DEV(mioa701_gpio_keys, "gpio-keys",      &mioa701_gpio_keys_data)
 807 MIO_PARENT_DEV(mioa701_backlight, "pwm-backlight",  &pxa27x_device_pwm0.dev,
 808                 &mioa701_backlight_data);
 809 MIO_SIMPLE_DEV(mioa701_led,       "leds-gpio",      &gpio_led_info)
 810 MIO_SIMPLE_DEV(pxa2xx_pcm,        "pxa2xx-pcm",     NULL)
 811 MIO_SIMPLE_DEV(mioa701_sound,     "mioa701-wm9713", NULL)
 812 MIO_SIMPLE_DEV(mioa701_board,     "mioa701-board",  NULL)
 813 MIO_SIMPLE_DEV(gpio_vbus,         "gpio-vbus",      &gpio_vbus_data);
 814
 815 static struct platform_device *devices[] __initdata = {
 816         &mioa701_gpio_keys,
 817         &mioa701_backlight,
 818         &mioa701_led,
 819         &pxa2xx_pcm,
 820         &mioa701_sound,
 821         &power_dev,
 822         &strataflash,
 823         &gpio_vbus,
 824         &mioa701_board,
 825 };
 826
 827 static void mioa701_machine_exit(void);
 828
 829 static void mioa701_poweroff(void)
 830 {
 831         mioa701_machine_exit();
 832         arm_machine_restart('s', NULL);
 833 }
 834
 835 static void mioa701_restart(char c, const char *cmd)
 836 {
 837         mioa701_machine_exit();
 838         arm_machine_restart('s', cmd);
 839 }
 840
 841 static struct gpio_ress global_gpios[] = {
 842         MIO_GPIO_OUT(GPIO9_CHARGE_EN, 1, "Charger enable"),
 843         MIO_GPIO_OUT(GPIO18_POWEROFF, 0, "Power Off"),
 844         MIO_GPIO_OUT(GPIO87_LCD_POWER, 0, "LCD Power")
 845 };
 846
 847 static void __init mioa701_machine_init(void)
 848 {
 849         PSLR  = 0xff100000; /* SYSDEL=125ms, PWRDEL=125ms, PSLR_SL_ROD=1 */
 850         PCFR = PCFR_DC_EN | PCFR_GPR_EN | PCFR_OPDE;
 851         RTTR = 32768 - 1; /* Reset crazy WinCE value */
 852         UP2OCR = UP2OCR_HXOE;
 853
 854         pxa2xx_mfp_config(ARRAY_AND_SIZE(mioa701_pin_config));
 855         mio_gpio_request(ARRAY_AND_SIZE(global_gpios));
 856         bootstrap_init();
 857         set_pxa_fb_info(&mioa701_pxafb_info);
 858         pxa_set_mci_info(&mioa701_mci_info);
 859         pxa_set_keypad_info(&mioa701_keypad_info);
 860         wm97xx_bat_set_pdata(&mioa701_battery_data);
 861         pxa_set_udc_info(&mioa701_udc_info);
 862         pxa_set_ac97_info(&mioa701_ac97_info);
 863         pm_power_off = mioa701_poweroff;
 864         arm_pm_restart = mioa701_restart;
 865         platform_add_devices(devices, ARRAY_SIZE(devices));
 866         gsm_init();
 867
 868         i2c_register_board_info(1, ARRAY_AND_SIZE(mioa701_pi2c_devices));
 869         pxa_set_i2c_info(&i2c_pdata);
 870         pxa27x_set_i2c_power_info(NULL);
 871         pxa_set_camera_info(&mioa701_pxacamera_platform_data);
 872         i2c_register_board_info(0, ARRAY_AND_SIZE(mioa701_i2c_devices));
 873 }
 874
 875 static void mioa701_machine_exit(void)
 876 {
 877         bootstrap_exit();
 878         gsm_exit();
 879 }
 880
 881 MACHINE_START(MIOA701, "MIO A701")
 882         .phys_io        = 0x40000000,
 883         .io_pg_offst    = (io_p2v(0x40000000) >> 18) & 0xfffc,
 884         .boot_params    = 0xa0000100,
 885         .map_io         = &pxa_map_io,
 886         .init_irq       = &pxa27x_init_irq,
 887         .init_machine   = mioa701_machine_init,
 888         .timer          = &pxa_timer,
 889 MACHINE_END