kernel/arch/arm/mach-s3c24xx/mach-h1940.c

   1 /*
   2  * Copyright (c) 2003-2005 Simtec Electronics
   3  *   Ben Dooks <ben@simtec.co.uk>
   4  *
   5  * http://www.handhelds.org/projects/h1940.html
   6  *
   7  * This program is free software; you can redistribute it and/or modify
   8  * it under the terms of the GNU General Public License version 2 as
   9  * published by the Free Software Foundation.
  10  *
  11 */
  12
  13 #include <linux/kernel.h>
  14 #include <linux/types.h>
  15 #include <linux/interrupt.h>
  16 #include <linux/list.h>
  17 #include <linux/memblock.h>
  18 #include <linux/timer.h>
  19 #include <linux/init.h>
  20 #include <linux/device.h>
  21 #include <linux/serial_core.h>
  22 #include <linux/serial_s3c.h>
  23 #include <linux/platform_device.h>
  24 #include <linux/io.h>
  25 #include <linux/gpio.h>
  26 #include <linux/input.h>
  27 #include <linux/gpio_keys.h>
  28 #include <linux/pwm_backlight.h>
  29 #include <linux/i2c.h>
  30 #include <linux/leds.h>
  31 #include <linux/pda_power.h>
  32 #include <linux/s3c_adc_battery.h>
  33 #include <linux/delay.h>
  34
  35 #include <video/platform_lcd.h>
  36
  37 #include <linux/mmc/host.h>
  38 #include <linux/export.h>
  39
  40 #include <asm/irq.h>
  41 #include <asm/mach-types.h>
  42 #include <asm/mach/arch.h>
  43 #include <asm/mach/map.h>
  44 #include <asm/mach/irq.h>
  45
  46 #include <linux/platform_data/i2c-s3c2410.h>
  47 #include <linux/platform_data/mmc-s3cmci.h>
  48 #include <linux/platform_data/touchscreen-s3c2410.h>
  49 #include <linux/platform_data/usb-s3c2410_udc.h>
  50
  51 #include <sound/uda1380.h>
  52
  53 #include <mach/fb.h>
  54 #include <mach/hardware.h>
  55 #include <mach/regs-clock.h>
  56 #include <mach/regs-gpio.h>
  57 #include <mach/regs-lcd.h>
  58 #include <mach/gpio-samsung.h>
  59
  60 #include <plat/cpu.h>
  61 #include <plat/devs.h>
  62 #include <plat/gpio-cfg.h>
  63 #include <plat/pm.h>
  64 #include <plat/samsung-time.h>
  65
  66 #include "common.h"
  67 #include "h1940.h"
  68
  69 #define H1940_LATCH             ((void __force __iomem *)0xF8000000)
  70
  71 #define H1940_PA_LATCH          S3C2410_CS2
  72
  73 #define H1940_LATCH_BIT(x)      (1 << ((x) + 16 - S3C_GPIO_END))
  74
  75 #define S3C24XX_PLL_MDIV_SHIFT         (12)
  76 #define S3C24XX_PLL_PDIV_SHIFT         (4)
  77 #define S3C24XX_PLL_SDIV_SHIFT         (0)
  78
  79 static struct map_desc h1940_iodesc[] __initdata = {
  80         [0] = {
  81                 .virtual        = (unsigned long)H1940_LATCH,
  82                 .pfn            = __phys_to_pfn(H1940_PA_LATCH),
  83                 .length         = SZ_16K,
  84                 .type           = MT_DEVICE
  85         },
  86 };
  87
  88 #define UCON S3C2410_UCON_DEFAULT | S3C2410_UCON_UCLK
  89 #define ULCON S3C2410_LCON_CS8 | S3C2410_LCON_PNONE | S3C2410_LCON_STOPB
  90 #define UFCON S3C2410_UFCON_RXTRIG8 | S3C2410_UFCON_FIFOMODE
  91
  92 static struct s3c2410_uartcfg h1940_uartcfgs[] __initdata = {
  93         [0] = {
  94                 .hwport      = 0,
  95                 .flags       = 0,
  96                 .ucon        = 0x3c5,
  97                 .ulcon       = 0x03,
  98                 .ufcon       = 0x51,
  99         },
 100         [1] = {
 101                 .hwport      = 1,
 102                 .flags       = 0,
 103                 .ucon        = 0x245,
 104                 .ulcon       = 0x03,
 105                 .ufcon       = 0x00,
 106         },
 107         /* IR port */
 108         [2] = {
 109                 .hwport      = 2,
 110                 .flags       = 0,
 111                 .uart_flags  = UPF_CONS_FLOW,
 112                 .ucon        = 0x3c5,
 113                 .ulcon       = 0x43,
 114                 .ufcon       = 0x51,
 115         }
 116 };
 117
 118 /* Board control latch control */
 119
 120 static unsigned int latch_state;
 121
 122 static void h1940_latch_control(unsigned int clear, unsigned int set)
 123 {
 124         unsigned long flags;
 125
 126         local_irq_save(flags);
 127
 128         latch_state &= ~clear;
 129         latch_state |= set;
 130
 131         __raw_writel(latch_state, H1940_LATCH);
 132
 133         local_irq_restore(flags);
 134 }
 135
 136 static inline int h1940_gpiolib_to_latch(int offset)
 137 {
 138         return 1 << (offset + 16);
 139 }
 140
 141 static void h1940_gpiolib_latch_set(struct gpio_chip *chip,
 142                                         unsigned offset, int value)
 143 {
 144         int latch_bit = h1940_gpiolib_to_latch(offset);
 145
 146         h1940_latch_control(value ? 0 : latch_bit,
 147                 value ? latch_bit : 0);
 148 }
 149
 150 static int h1940_gpiolib_latch_output(struct gpio_chip *chip,
 151                                         unsigned offset, int value)
 152 {
 153         h1940_gpiolib_latch_set(chip, offset, value);
 154         return 0;
 155 }
 156
 157 static int h1940_gpiolib_latch_get(struct gpio_chip *chip,
 158                                         unsigned offset)
 159 {
 160         return (latch_state >> (offset + 16)) & 1;
 161 }
 162
 163 static struct gpio_chip h1940_latch_gpiochip = {
 164         .base                   = H1940_LATCH_GPIO(0),
 165         .owner                  = THIS_MODULE,
 166         .label                  = "H1940_LATCH",
 167         .ngpio                  = 16,
 168         .direction_output       = h1940_gpiolib_latch_output,
 169         .set                    = h1940_gpiolib_latch_set,
 170         .get                    = h1940_gpiolib_latch_get,
 171 };
 172
 173 static struct s3c2410_udc_mach_info h1940_udc_cfg __initdata = {
 174         .vbus_pin               = S3C2410_GPG(5),
 175         .vbus_pin_inverted      = 1,
 176         .pullup_pin             = H1940_LATCH_USB_DP,
 177 };
 178
 179 static struct s3c2410_ts_mach_info h1940_ts_cfg __initdata = {
 180                 .delay = 10000,
 181                 .presc = 49,
 182                 .oversampling_shift = 2,
 183                 .cfg_gpio = s3c24xx_ts_cfg_gpio,
 184 };
 185
 186 /**
 187  * Set lcd on or off
 188  **/
 189 static struct s3c2410fb_display h1940_lcd __initdata = {
 190         .lcdcon5=       S3C2410_LCDCON5_FRM565 | \
 191                         S3C2410_LCDCON5_INVVLINE | \
 192                         S3C2410_LCDCON5_HWSWP,
 193
 194         .type =         S3C2410_LCDCON1_TFT,
 195         .width =        240,
 196         .height =       320,
 197         .pixclock =     260000,
 198         .xres =         240,
 199         .yres =         320,
 200         .bpp =          16,
 201         .left_margin =  8,
 202         .right_margin = 20,
 203         .hsync_len =    4,
 204         .upper_margin = 8,
 205         .lower_margin = 7,
 206         .vsync_len =    1,
 207 };
 208
 209 static struct s3c2410fb_mach_info h1940_fb_info __initdata = {
 210         .displays = &h1940_lcd,
 211         .num_displays = 1,
 212         .default_display = 0,
 213
 214         .lpcsel =       0x02,
 215         .gpccon =       0xaa940659,
 216         .gpccon_mask =  0xffffc0f0,
 217         .gpcup =        0x0000ffff,
 218         .gpcup_mask =   0xffffffff,
 219         .gpdcon =       0xaa84aaa0,
 220         .gpdcon_mask =  0xffffffff,
 221         .gpdup =        0x0000faff,
 222         .gpdup_mask =   0xffffffff,
 223 };
 224
 225 static int power_supply_init(struct device *dev)
 226 {
 227         return gpio_request(S3C2410_GPF(2), "cable plugged");
 228 }
 229
 230 static int h1940_is_ac_online(void)
 231 {
 232         return !gpio_get_value(S3C2410_GPF(2));
 233 }
 234
 235 static void power_supply_exit(struct device *dev)
 236 {
 237         gpio_free(S3C2410_GPF(2));
 238 }
 239
 240 static char *h1940_supplicants[] = {
 241         "main-battery",
 242         "backup-battery",
 243 };
 244
 245 static struct pda_power_pdata power_supply_info = {
 246         .init                   = power_supply_init,
 247         .is_ac_online           = h1940_is_ac_online,
 248         .exit                   = power_supply_exit,
 249         .supplied_to            = h1940_supplicants,
 250         .num_supplicants        = ARRAY_SIZE(h1940_supplicants),
 251 };
 252
 253 static struct resource power_supply_resources[] = {
 254         [0] = DEFINE_RES_NAMED(IRQ_EINT2, 1, "ac", IORESOURCE_IRQ \
 255                         | IORESOURCE_IRQ_LOWEDGE | IORESOURCE_IRQ_HIGHEDGE),
 256 };
 257
 258 static struct platform_device power_supply = {
 259         .name           = "pda-power",
 260         .id             = -1,
 261         .dev            = {
 262                                 .platform_data =
 263                                         &power_supply_info,
 264         },
 265         .resource       = power_supply_resources,
 266         .num_resources  = ARRAY_SIZE(power_supply_resources),
 267 };
 268
 269 static const struct s3c_adc_bat_thresh bat_lut_noac[] = {
 270         { .volt = 4070, .cur = 162, .level = 100},
 271         { .volt = 4040, .cur = 165, .level = 95},
 272         { .volt = 4016, .cur = 164, .level = 90},
 273         { .volt = 3996, .cur = 166, .level = 85},
 274         { .volt = 3971, .cur = 168, .level = 80},
 275         { .volt = 3951, .cur = 168, .level = 75},
 276         { .volt = 3931, .cur = 170, .level = 70},
 277         { .volt = 3903, .cur = 172, .level = 65},
 278         { .volt = 3886, .cur = 172, .level = 60},
 279         { .volt = 3858, .cur = 176, .level = 55},
 280         { .volt = 3842, .cur = 176, .level = 50},
 281         { .volt = 3818, .cur = 176, .level = 45},
 282         { .volt = 3789, .cur = 180, .level = 40},
 283         { .volt = 3769, .cur = 180, .level = 35},
 284         { .volt = 3749, .cur = 184, .level = 30},
 285         { .volt = 3732, .cur = 184, .level = 25},
 286         { .volt = 3716, .cur = 184, .level = 20},
 287         { .volt = 3708, .cur = 184, .level = 15},
 288         { .volt = 3716, .cur = 96, .level = 10},
 289         { .volt = 3700, .cur = 96, .level = 5},
 290         { .volt = 3684, .cur = 96, .level = 0},
 291 };
 292
 293 static const struct s3c_adc_bat_thresh bat_lut_acin[] = {
 294         { .volt = 4130, .cur = 0, .level = 100},
 295         { .volt = 3982, .cur = 0, .level = 50},
 296         { .volt = 3854, .cur = 0, .level = 10},
 297         { .volt = 3841, .cur = 0, .level = 0},
 298 };
 299
 300 static int h1940_bat_init(void)
 301 {
 302         int ret;
 303
 304         ret = gpio_request(H1940_LATCH_SM803_ENABLE, "h1940-charger-enable");
 305         if (ret)
 306                 return ret;
 307         gpio_direction_output(H1940_LATCH_SM803_ENABLE, 0);
 308
 309         return 0;
 310
 311 }
 312
 313 static void h1940_bat_exit(void)
 314 {
 315         gpio_free(H1940_LATCH_SM803_ENABLE);
 316 }
 317
 318 static void h1940_enable_charger(void)
 319 {
 320         gpio_set_value(H1940_LATCH_SM803_ENABLE, 1);
 321 }
 322
 323 static void h1940_disable_charger(void)
 324 {
 325         gpio_set_value(H1940_LATCH_SM803_ENABLE, 0);
 326 }
 327
 328 static struct s3c_adc_bat_pdata h1940_bat_cfg = {
 329         .init = h1940_bat_init,
 330         .exit = h1940_bat_exit,
 331         .enable_charger = h1940_enable_charger,
 332         .disable_charger = h1940_disable_charger,
 333         .gpio_charge_finished = S3C2410_GPF(3),
 334         .gpio_inverted = 1,
 335         .lut_noac = bat_lut_noac,
 336         .lut_noac_cnt = ARRAY_SIZE(bat_lut_noac),
 337         .lut_acin = bat_lut_acin,
 338         .lut_acin_cnt = ARRAY_SIZE(bat_lut_acin),
 339         .volt_channel = 0,
 340         .current_channel = 1,
 341         .volt_mult = 4056,
 342         .current_mult = 1893,
 343         .internal_impedance = 200,
 344         .backup_volt_channel = 3,
 345         /* TODO Check backup volt multiplier */
 346         .backup_volt_mult = 4056,
 347         .backup_volt_min = 0,
 348         .backup_volt_max = 4149288
 349 };
 350
 351 static struct platform_device h1940_battery = {
 352         .name             = "s3c-adc-battery",
 353         .id               = -1,
 354         .dev = {
 355                 .parent = &s3c_device_adc.dev,
 356                 .platform_data = &h1940_bat_cfg,
 357         },
 358 };
 359
 360 static DEFINE_SPINLOCK(h1940_blink_spin);
 361
 362 int h1940_led_blink_set(struct gpio_desc *desc, int state,
 363         unsigned long *delay_on, unsigned long *delay_off)
 364 {
 365         int blink_gpio, check_gpio1, check_gpio2;
 366         int gpio = desc ? desc_to_gpio(desc) : -EINVAL;
 367
 368         switch (gpio) {
 369         case H1940_LATCH_LED_GREEN:
 370                 blink_gpio = S3C2410_GPA(7);
 371                 check_gpio1 = S3C2410_GPA(1);
 372                 check_gpio2 = S3C2410_GPA(3);
 373                 break;
 374         case H1940_LATCH_LED_RED:
 375                 blink_gpio = S3C2410_GPA(1);
 376                 check_gpio1 = S3C2410_GPA(7);
 377                 check_gpio2 = S3C2410_GPA(3);
 378                 break;
 379         default:
 380                 blink_gpio = S3C2410_GPA(3);
 381                 check_gpio1 = S3C2410_GPA(1);
 382                 check_gpio2 = S3C2410_GPA(7);
 383                 break;
 384         }
 385
 386         if (delay_on && delay_off && !*delay_on && !*delay_off)
 387                 *delay_on = *delay_off = 500;
 388
 389         spin_lock(&h1940_blink_spin);
 390
 391         switch (state) {
 392         case GPIO_LED_NO_BLINK_LOW:
 393         case GPIO_LED_NO_BLINK_HIGH:
 394                 if (!gpio_get_value(check_gpio1) &&
 395                     !gpio_get_value(check_gpio2))
 396                         gpio_set_value(H1940_LATCH_LED_FLASH, 0);
 397                 gpio_set_value(blink_gpio, 0);
 398                 if (gpio_is_valid(gpio))
 399                         gpio_set_value(gpio, state);
 400                 break;
 401         case GPIO_LED_BLINK:
 402                 if (gpio_is_valid(gpio))
 403                         gpio_set_value(gpio, 0);
 404                 gpio_set_value(H1940_LATCH_LED_FLASH, 1);
 405                 gpio_set_value(blink_gpio, 1);
 406                 break;
 407         }
 408
 409         spin_unlock(&h1940_blink_spin);
 410
 411         return 0;
 412 }
 413 EXPORT_SYMBOL(h1940_led_blink_set);
 414
 415 static struct gpio_led h1940_leds_desc[] = {
 416         {
 417                 .name                   = "Green",
 418                 .default_trigger        = "main-battery-full",
 419                 .gpio                   = H1940_LATCH_LED_GREEN,
 420                 .retain_state_suspended = 1,
 421         },
 422         {
 423                 .name                   = "Red",
 424                 .default_trigger
 425                         = "main-battery-charging-blink-full-solid",
 426                 .gpio                   = H1940_LATCH_LED_RED,
 427                 .retain_state_suspended = 1,
 428         },
 429 };
 430
 431 static struct gpio_led_platform_data h1940_leds_pdata = {
 432         .num_leds       = ARRAY_SIZE(h1940_leds_desc),
 433         .leds           = h1940_leds_desc,
 434         .gpio_blink_set = h1940_led_blink_set,
 435 };
 436
 437 static struct platform_device h1940_device_leds = {
 438         .name   = "leds-gpio",
 439         .id     = -1,
 440         .dev    = {
 441                         .platform_data = &h1940_leds_pdata,
 442         },
 443 };
 444
 445 static struct platform_device h1940_device_bluetooth = {
 446         .name             = "h1940-bt",
 447         .id               = -1,
 448 };
 449
 450 static void h1940_set_mmc_power(unsigned char power_mode, unsigned short vdd)
 451 {
 452         switch (power_mode) {
 453         case MMC_POWER_OFF:
 454                 gpio_set_value(H1940_LATCH_SD_POWER, 0);
 455                 break;
 456         case MMC_POWER_UP:
 457         case MMC_POWER_ON:
 458                 gpio_set_value(H1940_LATCH_SD_POWER, 1);
 459                 break;
 460         default:
 461                 break;
 462         }
 463 }
 464
 465 static struct s3c24xx_mci_pdata h1940_mmc_cfg __initdata = {
 466         .gpio_detect   = S3C2410_GPF(5),
 467         .gpio_wprotect = S3C2410_GPH(8),
 468         .set_power     = h1940_set_mmc_power,
 469         .ocr_avail     = MMC_VDD_32_33,
 470 };
 471
 472 static int h1940_backlight_init(struct device *dev)
 473 {
 474         gpio_request(S3C2410_GPB(0), "Backlight");
 475
 476         gpio_direction_output(S3C2410_GPB(0), 0);
 477         s3c_gpio_setpull(S3C2410_GPB(0), S3C_GPIO_PULL_NONE);
 478         s3c_gpio_cfgpin(S3C2410_GPB(0), S3C2410_GPB0_TOUT0);
 479         gpio_set_value(H1940_LATCH_MAX1698_nSHUTDOWN, 1);
 480
 481         return 0;
 482 }
 483
 484 static int h1940_backlight_notify(struct device *dev, int brightness)
 485 {
 486         if (!brightness) {
 487                 gpio_direction_output(S3C2410_GPB(0), 1);
 488                 gpio_set_value(H1940_LATCH_MAX1698_nSHUTDOWN, 0);
 489         } else {
 490                 gpio_direction_output(S3C2410_GPB(0), 0);
 491                 s3c_gpio_setpull(S3C2410_GPB(0), S3C_GPIO_PULL_NONE);
 492                 s3c_gpio_cfgpin(S3C2410_GPB(0), S3C2410_GPB0_TOUT0);
 493                 gpio_set_value(H1940_LATCH_MAX1698_nSHUTDOWN, 1);
 494         }
 495         return brightness;
 496 }
 497
 498 static void h1940_backlight_exit(struct device *dev)
 499 {
 500         gpio_direction_output(S3C2410_GPB(0), 1);
 501         gpio_set_value(H1940_LATCH_MAX1698_nSHUTDOWN, 0);
 502 }
 503
 504
 505 static struct platform_pwm_backlight_data backlight_data = {
 506         .pwm_id         = 0,
 507         .max_brightness = 100,
 508         .dft_brightness = 50,
 509         /* tcnt = 0x31 */
 510         .pwm_period_ns  = 36296,
 511         .enable_gpio    = -1,
 512         .init           = h1940_backlight_init,
 513         .notify         = h1940_backlight_notify,
 514         .exit           = h1940_backlight_exit,
 515 };
 516
 517 static struct platform_device h1940_backlight = {
 518         .name = "pwm-backlight",
 519         .dev  = {
 520                 .parent = &samsung_device_pwm.dev,
 521                 .platform_data = &backlight_data,
 522         },
 523         .id   = -1,
 524 };
 525
 526 static void h1940_lcd_power_set(struct plat_lcd_data *pd,
 527                                         unsigned int power)
 528 {
 529         int value, retries = 100;
 530
 531         if (!power) {
 532                 gpio_set_value(S3C2410_GPC(0), 0);
 533                 /* wait for 3ac */
 534                 do {
 535                         value = gpio_get_value(S3C2410_GPC(6));
 536                 } while (value && retries--);
 537
 538                 gpio_set_value(H1940_LATCH_LCD_P2, 0);
 539                 gpio_set_value(H1940_LATCH_LCD_P3, 0);
 540                 gpio_set_value(H1940_LATCH_LCD_P4, 0);
 541
 542                 gpio_direction_output(S3C2410_GPC(1), 0);
 543                 gpio_direction_output(S3C2410_GPC(4), 0);
 544
 545                 gpio_set_value(H1940_LATCH_LCD_P1, 0);
 546                 gpio_set_value(H1940_LATCH_LCD_P0, 0);
 547
 548                 gpio_set_value(S3C2410_GPC(5), 0);
 549
 550         } else {
 551                 gpio_set_value(H1940_LATCH_LCD_P0, 1);
 552                 gpio_set_value(H1940_LATCH_LCD_P1, 1);
 553
 554                 gpio_direction_input(S3C2410_GPC(1));
 555                 gpio_direction_input(S3C2410_GPC(4));
 556                 mdelay(10);
 557                 s3c_gpio_cfgpin(S3C2410_GPC(1), S3C_GPIO_SFN(2));
 558                 s3c_gpio_cfgpin(S3C2410_GPC(4), S3C_GPIO_SFN(2));
 559
 560                 gpio_set_value(S3C2410_GPC(5), 1);
 561                 gpio_set_value(S3C2410_GPC(0), 1);
 562
 563                 gpio_set_value(H1940_LATCH_LCD_P3, 1);
 564                 gpio_set_value(H1940_LATCH_LCD_P2, 1);
 565                 gpio_set_value(H1940_LATCH_LCD_P4, 1);
 566         }
 567 }
 568
 569 static struct plat_lcd_data h1940_lcd_power_data = {
 570         .set_power      = h1940_lcd_power_set,
 571 };
 572
 573 static struct platform_device h1940_lcd_powerdev = {
 574         .name                   = "platform-lcd",
 575         .dev.parent             = &s3c_device_lcd.dev,
 576         .dev.platform_data      = &h1940_lcd_power_data,
 577 };
 578
 579 static struct uda1380_platform_data uda1380_info = {
 580         .gpio_power     = H1940_LATCH_UDA_POWER,
 581         .gpio_reset     = S3C2410_GPA(12),
 582         .dac_clk        = UDA1380_DAC_CLK_SYSCLK,
 583 };
 584
 585 static struct i2c_board_info h1940_i2c_devices[] = {
 586         {
 587                 I2C_BOARD_INFO("uda1380", 0x1a),
 588                 .platform_data = &uda1380_info,
 589         },
 590 };
 591
 592 #define DECLARE_BUTTON(p, k, n, w)      \
 593         {                               \
 594                 .gpio           = p,    \
 595                 .code           = k,    \
 596                 .desc           = n,    \
 597                 .wakeup         = w,    \
 598                 .active_low     = 1,    \
 599         }
 600
 601 static struct gpio_keys_button h1940_buttons[] = {
 602         DECLARE_BUTTON(S3C2410_GPF(0),       KEY_POWER,          "Power", 1),
 603         DECLARE_BUTTON(S3C2410_GPF(6),       KEY_ENTER,         "Select", 1),
 604         DECLARE_BUTTON(S3C2410_GPF(7),      KEY_RECORD,         "Record", 0),
 605         DECLARE_BUTTON(S3C2410_GPG(0),         KEY_F11,       "Calendar", 0),
 606         DECLARE_BUTTON(S3C2410_GPG(2),         KEY_F12,       "Contacts", 0),
 607         DECLARE_BUTTON(S3C2410_GPG(3),        KEY_MAIL,           "Mail", 0),
 608         DECLARE_BUTTON(S3C2410_GPG(6),        KEY_LEFT,     "Left_arrow", 0),
 609         DECLARE_BUTTON(S3C2410_GPG(7),    KEY_HOMEPAGE,           "Home", 0),
 610         DECLARE_BUTTON(S3C2410_GPG(8),       KEY_RIGHT,    "Right_arrow", 0),
 611         DECLARE_BUTTON(S3C2410_GPG(9),          KEY_UP,       "Up_arrow", 0),
 612         DECLARE_BUTTON(S3C2410_GPG(10),       KEY_DOWN,     "Down_arrow", 0),
 613 };
 614
 615 static struct gpio_keys_platform_data h1940_buttons_data = {
 616         .buttons        = h1940_buttons,
 617         .nbuttons       = ARRAY_SIZE(h1940_buttons),
 618 };
 619
 620 static struct platform_device h1940_dev_buttons = {
 621         .name           = "gpio-keys",
 622         .id             = -1,
 623         .dev            = {
 624                 .platform_data  = &h1940_buttons_data,
 625         }
 626 };
 627
 628 static struct platform_device *h1940_devices[] __initdata = {
 629         &h1940_dev_buttons,
 630         &s3c_device_ohci,
 631         &s3c_device_lcd,
 632         &s3c_device_wdt,
 633         &s3c_device_i2c0,
 634         &s3c_device_iis,
 635         &s3c_device_usbgadget,
 636         &h1940_device_leds,
 637         &h1940_device_bluetooth,
 638         &s3c_device_sdi,
 639         &s3c_device_rtc,
 640         &samsung_device_pwm,
 641         &h1940_backlight,
 642         &h1940_lcd_powerdev,
 643         &s3c_device_adc,
 644         &s3c_device_ts,
 645         &power_supply,
 646         &h1940_battery,
 647 };
 648
 649 static void __init h1940_map_io(void)
 650 {
 651         s3c24xx_init_io(h1940_iodesc, ARRAY_SIZE(h1940_iodesc));
 652         s3c24xx_init_uarts(h1940_uartcfgs, ARRAY_SIZE(h1940_uartcfgs));
 653         samsung_set_timer_source(SAMSUNG_PWM3, SAMSUNG_PWM4);
 654
 655         /* setup PM */
 656
 657 #ifdef CONFIG_PM_H1940
 658         memcpy(phys_to_virt(H1940_SUSPEND_RESUMEAT), h1940_pm_return, 1024);
 659 #endif
 660         s3c_pm_init();
 661
 662         /* Add latch gpio chip, set latch initial value */
 663         h1940_latch_control(0, 0);
 664         WARN_ON(gpiochip_add(&h1940_latch_gpiochip));
 665 }
 666
 667 static void __init h1940_init_time(void)
 668 {
 669         s3c2410_init_clocks(12000000);
 670         samsung_timer_init();
 671 }
 672
 673 /* H1940 and RX3715 need to reserve this for suspend */
 674 static void __init h1940_reserve(void)
 675 {
 676         memblock_reserve(0x30003000, 0x1000);
 677         memblock_reserve(0x30081000, 0x1000);
 678 }
 679
 680 static void __init h1940_init(void)
 681 {
 682         u32 tmp;
 683
 684         s3c24xx_fb_set_platdata(&h1940_fb_info);
 685         s3c24xx_mci_set_platdata(&h1940_mmc_cfg);
 686         s3c24xx_udc_set_platdata(&h1940_udc_cfg);
 687         s3c24xx_ts_set_platdata(&h1940_ts_cfg);
 688         s3c_i2c0_set_platdata(NULL);
 689
 690         /* Turn off suspend on both USB ports, and switch the
 691          * selectable USB port to USB device mode. */
 692
 693         s3c2410_modify_misccr(S3C2410_MISCCR_USBHOST |
 694                               S3C2410_MISCCR_USBSUSPND0 |
 695                               S3C2410_MISCCR_USBSUSPND1, 0x0);
 696
 697         tmp =   (0x78 << S3C24XX_PLL_MDIV_SHIFT)
 698               | (0x02 << S3C24XX_PLL_PDIV_SHIFT)
 699               | (0x03 << S3C24XX_PLL_SDIV_SHIFT);
 700         writel(tmp, S3C2410_UPLLCON);
 701
 702         gpio_request(S3C2410_GPC(0), "LCD power");
 703         gpio_request(S3C2410_GPC(1), "LCD power");
 704         gpio_request(S3C2410_GPC(4), "LCD power");
 705         gpio_request(S3C2410_GPC(5), "LCD power");
 706         gpio_request(S3C2410_GPC(6), "LCD power");
 707         gpio_request(H1940_LATCH_LCD_P0, "LCD power");
 708         gpio_request(H1940_LATCH_LCD_P1, "LCD power");
 709         gpio_request(H1940_LATCH_LCD_P2, "LCD power");
 710         gpio_request(H1940_LATCH_LCD_P3, "LCD power");
 711         gpio_request(H1940_LATCH_LCD_P4, "LCD power");
 712         gpio_request(H1940_LATCH_MAX1698_nSHUTDOWN, "LCD power");
 713         gpio_direction_output(S3C2410_GPC(0), 0);
 714         gpio_direction_output(S3C2410_GPC(1), 0);
 715         gpio_direction_output(S3C2410_GPC(4), 0);
 716         gpio_direction_output(S3C2410_GPC(5), 0);
 717         gpio_direction_input(S3C2410_GPC(6));
 718         gpio_direction_output(H1940_LATCH_LCD_P0, 0);
 719         gpio_direction_output(H1940_LATCH_LCD_P1, 0);
 720         gpio_direction_output(H1940_LATCH_LCD_P2, 0);
 721         gpio_direction_output(H1940_LATCH_LCD_P3, 0);
 722         gpio_direction_output(H1940_LATCH_LCD_P4, 0);
 723         gpio_direction_output(H1940_LATCH_MAX1698_nSHUTDOWN, 0);
 724
 725         gpio_request(H1940_LATCH_SD_POWER, "SD power");
 726         gpio_direction_output(H1940_LATCH_SD_POWER, 0);
 727
 728         platform_add_devices(h1940_devices, ARRAY_SIZE(h1940_devices));
 729
 730         gpio_request(S3C2410_GPA(1), "Red LED blink");
 731         gpio_request(S3C2410_GPA(3), "Blue LED blink");
 732         gpio_request(S3C2410_GPA(7), "Green LED blink");
 733         gpio_request(H1940_LATCH_LED_FLASH, "LED blink");
 734         gpio_direction_output(S3C2410_GPA(1), 0);
 735         gpio_direction_output(S3C2410_GPA(3), 0);
 736         gpio_direction_output(S3C2410_GPA(7), 0);
 737         gpio_direction_output(H1940_LATCH_LED_FLASH, 0);
 738
 739         i2c_register_board_info(0, h1940_i2c_devices,
 740                 ARRAY_SIZE(h1940_i2c_devices));
 741 }
 742
 743 MACHINE_START(H1940, "IPAQ-H1940")
 744         /* Maintainer: Ben Dooks <ben-linux@fluff.org> */
 745         .atag_offset    = 0x100,
 746         .map_io         = h1940_map_io,
 747         .reserve        = h1940_reserve,
 748         .init_irq       = s3c2410_init_irq,
 749         .init_machine   = h1940_init,
 750         .init_time      = h1940_init_time,
 751 MACHINE_END