arch/arm/mach-s3c2410/mach-h1940.c

   1 /* linux/arch/arm/mach-s3c2410/mach-h1940.c
   2  *
   3  * Copyright (c) 2003-2005 Simtec Electronics
   4  *   Ben Dooks <ben@simtec.co.uk>
   5  *
   6  * http://www.handhelds.org/projects/h1940.html
   7  *
   8  * This program is free software; you can redistribute it and/or modify
   9  * it under the terms of the GNU General Public License version 2 as
  10  * published by the Free Software Foundation.
  11  *
  12 */
  13
  14 #include <linux/kernel.h>
  15 #include <linux/types.h>
  16 #include <linux/interrupt.h>
  17 #include <linux/list.h>
  18 #include <linux/memblock.h>
  19 #include <linux/timer.h>
  20 #include <linux/init.h>
  21 #include <linux/device.h>
  22 #include <linux/serial_core.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/mach/arch.h>
  41 #include <asm/mach/map.h>
  42 #include <asm/mach/irq.h>
  43
  44 #include <mach/hardware.h>
  45 #include <asm/irq.h>
  46 #include <asm/mach-types.h>
  47
  48 #include <plat/regs-serial.h>
  49 #include <mach/regs-lcd.h>
  50 #include <mach/regs-clock.h>
  51
  52 #include <mach/regs-gpio.h>
  53 #include <mach/gpio-fns.h>
  54 #include <mach/gpio-nrs.h>
  55
  56 #include <mach/h1940.h>
  57 #include <mach/h1940-latch.h>
  58 #include <mach/fb.h>
  59 #include <plat/udc.h>
  60 #include <plat/iic.h>
  61
  62 #include <plat/gpio-cfg.h>
  63 #include <plat/clock.h>
  64 #include <plat/devs.h>
  65 #include <plat/cpu.h>
  66 #include <plat/pll.h>
  67 #include <plat/pm.h>
  68 #include <plat/mci.h>
  69 #include <plat/ts.h>
  70
  71 #include <sound/uda1380.h>
  72
  73 #include "common.h"
  74
  75 #define H1940_LATCH             ((void __force __iomem *)0xF8000000)
  76
  77 #define H1940_PA_LATCH          S3C2410_CS2
  78
  79 #define H1940_LATCH_BIT(x)      (1 << ((x) + 16 - S3C_GPIO_END))
  80
  81 static struct map_desc h1940_iodesc[] __initdata = {
  82         [0] = {
  83                 .virtual        = (unsigned long)H1940_LATCH,
  84                 .pfn            = __phys_to_pfn(H1940_PA_LATCH),
  85                 .length         = SZ_16K,
  86                 .type           = MT_DEVICE
  87         },
  88 };
  89
  90 #define UCON S3C2410_UCON_DEFAULT | S3C2410_UCON_UCLK
  91 #define ULCON S3C2410_LCON_CS8 | S3C2410_LCON_PNONE | S3C2410_LCON_STOPB
  92 #define UFCON S3C2410_UFCON_RXTRIG8 | S3C2410_UFCON_FIFOMODE
  93
  94 static struct s3c2410_uartcfg h1940_uartcfgs[] __initdata = {
  95         [0] = {
  96                 .hwport      = 0,
  97                 .flags       = 0,
  98                 .ucon        = 0x3c5,
  99                 .ulcon       = 0x03,
 100                 .ufcon       = 0x51,
 101         },
 102         [1] = {
 103                 .hwport      = 1,
 104                 .flags       = 0,
 105                 .ucon        = 0x245,
 106                 .ulcon       = 0x03,
 107                 .ufcon       = 0x00,
 108         },
 109         /* IR port */
 110         [2] = {
 111                 .hwport      = 2,
 112                 .flags       = 0,
 113                 .uart_flags  = UPF_CONS_FLOW,
 114                 .ucon        = 0x3c5,
 115                 .ulcon       = 0x43,
 116                 .ufcon       = 0x51,
 117         }
 118 };
 119
 120 /* Board control latch control */
 121
 122 static unsigned int latch_state;
 123
 124 static void h1940_latch_control(unsigned int clear, unsigned int set)
 125 {
 126         unsigned long flags;
 127
 128         local_irq_save(flags);
 129
 130         latch_state &= ~clear;
 131         latch_state |= set;
 132
 133         __raw_writel(latch_state, H1940_LATCH);
 134
 135         local_irq_restore(flags);
 136 }
 137
 138 static inline int h1940_gpiolib_to_latch(int offset)
 139 {
 140         return 1 << (offset + 16);
 141 }
 142
 143 static void h1940_gpiolib_latch_set(struct gpio_chip *chip,
 144                                         unsigned offset, int value)
 145 {
 146         int latch_bit = h1940_gpiolib_to_latch(offset);
 147
 148         h1940_latch_control(value ? 0 : latch_bit,
 149                 value ? latch_bit : 0);
 150 }
 151
 152 static int h1940_gpiolib_latch_output(struct gpio_chip *chip,
 153                                         unsigned offset, int value)
 154 {
 155         h1940_gpiolib_latch_set(chip, offset, value);
 156         return 0;
 157 }
 158
 159 static int h1940_gpiolib_latch_get(struct gpio_chip *chip,
 160                                         unsigned offset)
 161 {
 162         return (latch_state >> (offset + 16)) & 1;
 163 }
 164
 165 struct gpio_chip h1940_latch_gpiochip = {
 166         .base                   = H1940_LATCH_GPIO(0),
 167         .owner                  = THIS_MODULE,
 168         .label                  = "H1940_LATCH",
 169         .ngpio                  = 16,
 170         .direction_output       = h1940_gpiolib_latch_output,
 171         .set                    = h1940_gpiolib_latch_set,
 172         .get                    = h1940_gpiolib_latch_get,
 173 };
 174
 175 static struct s3c2410_udc_mach_info h1940_udc_cfg __initdata = {
 176         .vbus_pin               = S3C2410_GPG(5),
 177         .vbus_pin_inverted      = 1,
 178         .pullup_pin             = H1940_LATCH_USB_DP,
 179 };
 180
 181 static struct s3c2410_ts_mach_info h1940_ts_cfg __initdata = {
 182                 .delay = 10000,
 183                 .presc = 49,
 184                 .oversampling_shift = 2,
 185                 .cfg_gpio = s3c24xx_ts_cfg_gpio,
 186 };
 187
 188 /**
 189  * Set lcd on or off
 190  **/
 191 static struct s3c2410fb_display h1940_lcd __initdata = {
 192         .lcdcon5=       S3C2410_LCDCON5_FRM565 | \
 193                         S3C2410_LCDCON5_INVVLINE | \
 194                         S3C2410_LCDCON5_HWSWP,
 195
 196         .type =         S3C2410_LCDCON1_TFT,
 197         .width =        240,
 198         .height =       320,
 199         .pixclock =     260000,
 200         .xres =         240,
 201         .yres =         320,
 202         .bpp =          16,
 203         .left_margin =  8,
 204         .right_margin = 20,
 205         .hsync_len =    4,
 206         .upper_margin = 8,
 207         .lower_margin = 7,
 208         .vsync_len =    1,
 209 };
 210
 211 static struct s3c2410fb_mach_info h1940_fb_info __initdata = {
 212         .displays = &h1940_lcd,
 213         .num_displays = 1,
 214         .default_display = 0,
 215
 216         .lpcsel =       0x02,
 217         .gpccon =       0xaa940659,
 218         .gpccon_mask =  0xffffc0f0,
 219         .gpcup =        0x0000ffff,
 220         .gpcup_mask =   0xffffffff,
 221         .gpdcon =       0xaa84aaa0,
 222         .gpdcon_mask =  0xffffffff,
 223         .gpdup =        0x0000faff,
 224         .gpdup_mask =   0xffffffff,
 225 };
 226
 227 static int power_supply_init(struct device *dev)
 228 {
 229         return gpio_request(S3C2410_GPF(2), "cable plugged");
 230 }
 231
 232 static int h1940_is_ac_online(void)
 233 {
 234         return !gpio_get_value(S3C2410_GPF(2));
 235 }
 236
 237 static void power_supply_exit(struct device *dev)
 238 {
 239         gpio_free(S3C2410_GPF(2));
 240 }
 241
 242 static char *h1940_supplicants[] = {
 243         "main-battery",
 244         "backup-battery",
 245 };
 246
 247 static struct pda_power_pdata power_supply_info = {
 248         .init                   = power_supply_init,
 249         .is_ac_online           = h1940_is_ac_online,
 250         .exit                   = power_supply_exit,
 251         .supplied_to            = h1940_supplicants,
 252         .num_supplicants        = ARRAY_SIZE(h1940_supplicants),
 253 };
 254
 255 static struct resource power_supply_resources[] = {
 256         [0] = {
 257                         .name   = "ac",
 258                         .flags  = IORESOURCE_IRQ | IORESOURCE_IRQ_LOWEDGE |
 259                                           IORESOURCE_IRQ_HIGHEDGE,
 260                         .start  = IRQ_EINT2,
 261                         .end    = IRQ_EINT2,
 262         },
 263 };
 264
 265 static struct platform_device power_supply = {
 266         .name           = "pda-power",
 267         .id             = -1,
 268         .dev            = {
 269                                 .platform_data =
 270                                         &power_supply_info,
 271         },
 272         .resource       = power_supply_resources,
 273         .num_resources  = ARRAY_SIZE(power_supply_resources),
 274 };
 275
 276 static const struct s3c_adc_bat_thresh bat_lut_noac[] = {
 277         { .volt = 4070, .cur = 162, .level = 100},
 278         { .volt = 4040, .cur = 165, .level = 95},
 279         { .volt = 4016, .cur = 164, .level = 90},
 280         { .volt = 3996, .cur = 166, .level = 85},
 281         { .volt = 3971, .cur = 168, .level = 80},
 282         { .volt = 3951, .cur = 168, .level = 75},
 283         { .volt = 3931, .cur = 170, .level = 70},
 284         { .volt = 3903, .cur = 172, .level = 65},
 285         { .volt = 3886, .cur = 172, .level = 60},
 286         { .volt = 3858, .cur = 176, .level = 55},
 287         { .volt = 3842, .cur = 176, .level = 50},
 288         { .volt = 3818, .cur = 176, .level = 45},
 289         { .volt = 3789, .cur = 180, .level = 40},
 290         { .volt = 3769, .cur = 180, .level = 35},
 291         { .volt = 3749, .cur = 184, .level = 30},
 292         { .volt = 3732, .cur = 184, .level = 25},
 293         { .volt = 3716, .cur = 184, .level = 20},
 294         { .volt = 3708, .cur = 184, .level = 15},
 295         { .volt = 3716, .cur = 96, .level = 10},
 296         { .volt = 3700, .cur = 96, .level = 5},
 297         { .volt = 3684, .cur = 96, .level = 0},
 298 };
 299
 300 static const struct s3c_adc_bat_thresh bat_lut_acin[] = {
 301         { .volt = 4130, .cur = 0, .level = 100},
 302         { .volt = 3982, .cur = 0, .level = 50},
 303         { .volt = 3854, .cur = 0, .level = 10},
 304         { .volt = 3841, .cur = 0, .level = 0},
 305 };
 306
 307 int h1940_bat_init(void)
 308 {
 309         int ret;
 310
 311         ret = gpio_request(H1940_LATCH_SM803_ENABLE, "h1940-charger-enable");
 312         if (ret)
 313                 return ret;
 314         gpio_direction_output(H1940_LATCH_SM803_ENABLE, 0);
 315
 316         return 0;
 317
 318 }
 319
 320 void h1940_bat_exit(void)
 321 {
 322         gpio_free(H1940_LATCH_SM803_ENABLE);
 323 }
 324
 325 void h1940_enable_charger(void)
 326 {
 327         gpio_set_value(H1940_LATCH_SM803_ENABLE, 1);
 328 }
 329
 330 void h1940_disable_charger(void)
 331 {
 332         gpio_set_value(H1940_LATCH_SM803_ENABLE, 0);
 333 }
 334
 335 static struct s3c_adc_bat_pdata h1940_bat_cfg = {
 336         .init = h1940_bat_init,
 337         .exit = h1940_bat_exit,
 338         .enable_charger = h1940_enable_charger,
 339         .disable_charger = h1940_disable_charger,
 340         .gpio_charge_finished = S3C2410_GPF(3),
 341         .gpio_inverted = 1,
 342         .lut_noac = bat_lut_noac,
 343         .lut_noac_cnt = ARRAY_SIZE(bat_lut_noac),
 344         .lut_acin = bat_lut_acin,
 345         .lut_acin_cnt = ARRAY_SIZE(bat_lut_acin),
 346         .volt_channel = 0,
 347         .current_channel = 1,
 348         .volt_mult = 4056,
 349         .current_mult = 1893,
 350         .internal_impedance = 200,
 351         .backup_volt_channel = 3,
 352         /* TODO Check backup volt multiplier */
 353         .backup_volt_mult = 4056,
 354         .backup_volt_min = 0,
 355         .backup_volt_max = 4149288
 356 };
 357
 358 static struct platform_device h1940_battery = {
 359         .name             = "s3c-adc-battery",
 360         .id               = -1,
 361         .dev = {
 362                 .parent = &s3c_device_adc.dev,
 363                 .platform_data = &h1940_bat_cfg,
 364         },
 365 };
 366
 367 DEFINE_SPINLOCK(h1940_blink_spin);
 368
 369 int h1940_led_blink_set(unsigned gpio, int state,
 370         unsigned long *delay_on, unsigned long *delay_off)
 371 {
 372         int blink_gpio, check_gpio1, check_gpio2;
 373
 374         switch (gpio) {
 375         case H1940_LATCH_LED_GREEN:
 376                 blink_gpio = S3C2410_GPA(7);
 377                 check_gpio1 = S3C2410_GPA(1);
 378                 check_gpio2 = S3C2410_GPA(3);
 379                 break;
 380         case H1940_LATCH_LED_RED:
 381                 blink_gpio = S3C2410_GPA(1);
 382                 check_gpio1 = S3C2410_GPA(7);
 383                 check_gpio2 = S3C2410_GPA(3);
 384                 break;
 385         default:
 386                 blink_gpio = S3C2410_GPA(3);
 387                 check_gpio1 = S3C2410_GPA(1);
 388                 check_gpio1 = S3C2410_GPA(7);
 389                 break;
 390         }
 391
 392         if (delay_on && delay_off && !*delay_on && !*delay_off)
 393                 *delay_on = *delay_off = 500;
 394
 395         spin_lock(&h1940_blink_spin);
 396
 397         switch (state) {
 398         case GPIO_LED_NO_BLINK_LOW:
 399         case GPIO_LED_NO_BLINK_HIGH:
 400                 if (!gpio_get_value(check_gpio1) &&
 401                     !gpio_get_value(check_gpio2))
 402                         gpio_set_value(H1940_LATCH_LED_FLASH, 0);
 403                 gpio_set_value(blink_gpio, 0);
 404                 if (gpio_is_valid(gpio))
 405                         gpio_set_value(gpio, state);
 406                 break;
 407         case GPIO_LED_BLINK:
 408                 if (gpio_is_valid(gpio))
 409                         gpio_set_value(gpio, 0);
 410                 gpio_set_value(H1940_LATCH_LED_FLASH, 1);
 411                 gpio_set_value(blink_gpio, 1);
 412                 break;
 413         }
 414
 415         spin_unlock(&h1940_blink_spin);
 416
 417         return 0;
 418 }
 419 EXPORT_SYMBOL(h1940_led_blink_set);
 420
 421 static struct gpio_led h1940_leds_desc[] = {
 422         {
 423                 .name                   = "Green",
 424                 .default_trigger        = "main-battery-full",
 425                 .gpio                   = H1940_LATCH_LED_GREEN,
 426                 .retain_state_suspended = 1,
 427         },
 428         {
 429                 .name                   = "Red",
 430                 .default_trigger
 431                         = "main-battery-charging-blink-full-solid",
 432                 .gpio                   = H1940_LATCH_LED_RED,
 433                 .retain_state_suspended = 1,
 434         },
 435 };
 436
 437 static struct gpio_led_platform_data h1940_leds_pdata = {
 438         .num_leds       = ARRAY_SIZE(h1940_leds_desc),
 439         .leds           = h1940_leds_desc,
 440         .gpio_blink_set = h1940_led_blink_set,
 441 };
 442
 443 static struct platform_device h1940_device_leds = {
 444         .name   = "leds-gpio",
 445         .id     = -1,
 446         .dev    = {
 447                         .platform_data = &h1940_leds_pdata,
 448         },
 449 };
 450
 451 static struct platform_device h1940_device_bluetooth = {
 452         .name             = "h1940-bt",
 453         .id               = -1,
 454 };
 455
 456 static void h1940_set_mmc_power(unsigned char power_mode, unsigned short vdd)
 457 {
 458         switch (power_mode) {
 459         case MMC_POWER_OFF:
 460                 gpio_set_value(H1940_LATCH_SD_POWER, 0);
 461                 break;
 462         case MMC_POWER_UP:
 463         case MMC_POWER_ON:
 464                 gpio_set_value(H1940_LATCH_SD_POWER, 1);
 465                 break;
 466         default:
 467                 break;
 468         };
 469 }
 470
 471 static struct s3c24xx_mci_pdata h1940_mmc_cfg __initdata = {
 472         .gpio_detect   = S3C2410_GPF(5),
 473         .gpio_wprotect = S3C2410_GPH(8),
 474         .set_power     = h1940_set_mmc_power,
 475         .ocr_avail     = MMC_VDD_32_33,
 476 };
 477
 478 static int h1940_backlight_init(struct device *dev)
 479 {
 480         gpio_request(S3C2410_GPB(0), "Backlight");
 481
 482         gpio_direction_output(S3C2410_GPB(0), 0);
 483         s3c_gpio_setpull(S3C2410_GPB(0), S3C_GPIO_PULL_NONE);
 484         s3c_gpio_cfgpin(S3C2410_GPB(0), S3C2410_GPB0_TOUT0);
 485         gpio_set_value(H1940_LATCH_MAX1698_nSHUTDOWN, 1);
 486
 487         return 0;
 488 }
 489
 490 static int h1940_backlight_notify(struct device *dev, int brightness)
 491 {
 492         if (!brightness) {
 493                 gpio_direction_output(S3C2410_GPB(0), 1);
 494                 gpio_set_value(H1940_LATCH_MAX1698_nSHUTDOWN, 0);
 495         } else {
 496                 gpio_direction_output(S3C2410_GPB(0), 0);
 497                 s3c_gpio_setpull(S3C2410_GPB(0), S3C_GPIO_PULL_NONE);
 498                 s3c_gpio_cfgpin(S3C2410_GPB(0), S3C2410_GPB0_TOUT0);
 499                 gpio_set_value(H1940_LATCH_MAX1698_nSHUTDOWN, 1);
 500         }
 501         return brightness;
 502 }
 503
 504 static void h1940_backlight_exit(struct device *dev)
 505 {
 506         gpio_direction_output(S3C2410_GPB(0), 1);
 507         gpio_set_value(H1940_LATCH_MAX1698_nSHUTDOWN, 0);
 508 }
 509
 510
 511 static struct platform_pwm_backlight_data backlight_data = {
 512         .pwm_id         = 0,
 513         .max_brightness = 100,
 514         .dft_brightness = 50,
 515         /* tcnt = 0x31 */
 516         .pwm_period_ns  = 36296,
 517         .init           = h1940_backlight_init,
 518         .notify         = h1940_backlight_notify,
 519         .exit           = h1940_backlight_exit,
 520 };
 521
 522 static struct platform_device h1940_backlight = {
 523         .name = "pwm-backlight",
 524         .dev  = {
 525                 .parent = &s3c_device_timer[0].dev,
 526                 .platform_data = &backlight_data,
 527         },
 528         .id   = -1,
 529 };
 530
 531 static void h1940_lcd_power_set(struct plat_lcd_data *pd,
 532                                         unsigned int power)
 533 {
 534         int value, retries = 100;
 535
 536         if (!power) {
 537                 gpio_set_value(S3C2410_GPC(0), 0);
 538                 /* wait for 3ac */
 539                 do {
 540                         value = gpio_get_value(S3C2410_GPC(6));
 541                 } while (value && retries--);
 542
 543                 gpio_set_value(H1940_LATCH_LCD_P2, 0);
 544                 gpio_set_value(H1940_LATCH_LCD_P3, 0);
 545                 gpio_set_value(H1940_LATCH_LCD_P4, 0);
 546
 547                 gpio_direction_output(S3C2410_GPC(1), 0);
 548                 gpio_direction_output(S3C2410_GPC(4), 0);
 549
 550                 gpio_set_value(H1940_LATCH_LCD_P1, 0);
 551                 gpio_set_value(H1940_LATCH_LCD_P0, 0);
 552
 553                 gpio_set_value(S3C2410_GPC(5), 0);
 554
 555         } else {
 556                 gpio_set_value(H1940_LATCH_LCD_P0, 1);
 557                 gpio_set_value(H1940_LATCH_LCD_P1, 1);
 558
 559                 gpio_direction_input(S3C2410_GPC(1));
 560                 gpio_direction_input(S3C2410_GPC(4));
 561                 mdelay(10);
 562                 s3c_gpio_cfgpin(S3C2410_GPC(1), S3C_GPIO_SFN(2));
 563                 s3c_gpio_cfgpin(S3C2410_GPC(4), S3C_GPIO_SFN(2));
 564
 565                 gpio_set_value(S3C2410_GPC(5), 1);
 566                 gpio_set_value(S3C2410_GPC(0), 1);
 567
 568                 gpio_set_value(H1940_LATCH_LCD_P3, 1);
 569                 gpio_set_value(H1940_LATCH_LCD_P2, 1);
 570                 gpio_set_value(H1940_LATCH_LCD_P4, 1);
 571         }
 572 }
 573
 574 static struct plat_lcd_data h1940_lcd_power_data = {
 575         .set_power      = h1940_lcd_power_set,
 576 };
 577
 578 static struct platform_device h1940_lcd_powerdev = {
 579         .name                   = "platform-lcd",
 580         .dev.parent             = &s3c_device_lcd.dev,
 581         .dev.platform_data      = &h1940_lcd_power_data,
 582 };
 583
 584 static struct uda1380_platform_data uda1380_info = {
 585         .gpio_power     = H1940_LATCH_UDA_POWER,
 586         .gpio_reset     = S3C2410_GPA(12),
 587         .dac_clk        = UDA1380_DAC_CLK_SYSCLK,
 588 };
 589
 590 static struct i2c_board_info h1940_i2c_devices[] = {
 591         {
 592                 I2C_BOARD_INFO("uda1380", 0x1a),
 593                 .platform_data = &uda1380_info,
 594         },
 595 };
 596
 597 #define DECLARE_BUTTON(p, k, n, w)      \
 598         {                               \
 599                 .gpio           = p,    \
 600                 .code           = k,    \
 601                 .desc           = n,    \
 602                 .wakeup         = w,    \
 603                 .active_low     = 1,    \
 604         }
 605
 606 static struct gpio_keys_button h1940_buttons[] = {
 607         DECLARE_BUTTON(S3C2410_GPF(0),       KEY_POWER,          "Power", 1),
 608         DECLARE_BUTTON(S3C2410_GPF(6),       KEY_ENTER,         "Select", 1),
 609         DECLARE_BUTTON(S3C2410_GPF(7),      KEY_RECORD,         "Record", 0),
 610         DECLARE_BUTTON(S3C2410_GPG(0),         KEY_F11,       "Calendar", 0),
 611         DECLARE_BUTTON(S3C2410_GPG(2),         KEY_F12,       "Contacts", 0),
 612         DECLARE_BUTTON(S3C2410_GPG(3),        KEY_MAIL,           "Mail", 0),
 613         DECLARE_BUTTON(S3C2410_GPG(6),        KEY_LEFT,     "Left_arrow", 0),
 614         DECLARE_BUTTON(S3C2410_GPG(7),    KEY_HOMEPAGE,           "Home", 0),
 615         DECLARE_BUTTON(S3C2410_GPG(8),       KEY_RIGHT,    "Right_arrow", 0),
 616         DECLARE_BUTTON(S3C2410_GPG(9),          KEY_UP,       "Up_arrow", 0),
 617         DECLARE_BUTTON(S3C2410_GPG(10),       KEY_DOWN,     "Down_arrow", 0),
 618 };
 619
 620 static struct gpio_keys_platform_data h1940_buttons_data = {
 621         .buttons        = h1940_buttons,
 622         .nbuttons       = ARRAY_SIZE(h1940_buttons),
 623 };
 624
 625 static struct platform_device h1940_dev_buttons = {
 626         .name           = "gpio-keys",
 627         .id             = -1,
 628         .dev            = {
 629                 .platform_data  = &h1940_buttons_data,
 630         }
 631 };
 632
 633 static struct platform_device *h1940_devices[] __initdata = {
 634         &h1940_dev_buttons,
 635         &s3c_device_ohci,
 636         &s3c_device_lcd,
 637         &s3c_device_wdt,
 638         &s3c_device_i2c0,
 639         &s3c_device_iis,
 640         &samsung_asoc_dma,
 641         &s3c_device_usbgadget,
 642         &h1940_device_leds,
 643         &h1940_device_bluetooth,
 644         &s3c_device_sdi,
 645         &s3c_device_rtc,
 646         &s3c_device_timer[0],
 647         &h1940_backlight,
 648         &h1940_lcd_powerdev,
 649         &s3c_device_adc,
 650         &s3c_device_ts,
 651         &power_supply,
 652         &h1940_battery,
 653 };
 654
 655 static void __init h1940_map_io(void)
 656 {
 657         s3c24xx_init_io(h1940_iodesc, ARRAY_SIZE(h1940_iodesc));
 658         s3c24xx_init_clocks(0);
 659         s3c24xx_init_uarts(h1940_uartcfgs, ARRAY_SIZE(h1940_uartcfgs));
 660
 661         /* setup PM */
 662
 663 #ifdef CONFIG_PM_H1940
 664         memcpy(phys_to_virt(H1940_SUSPEND_RESUMEAT), h1940_pm_return, 1024);
 665 #endif
 666         s3c_pm_init();
 667
 668         /* Add latch gpio chip, set latch initial value */
 669         h1940_latch_control(0, 0);
 670         WARN_ON(gpiochip_add(&h1940_latch_gpiochip));
 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_irq(void)
 681 {
 682         s3c24xx_init_irq();
 683 }
 684
 685 static void __init h1940_init(void)
 686 {
 687         u32 tmp;
 688
 689         s3c24xx_fb_set_platdata(&h1940_fb_info);
 690         s3c24xx_mci_set_platdata(&h1940_mmc_cfg);
 691         s3c24xx_udc_set_platdata(&h1940_udc_cfg);
 692         s3c24xx_ts_set_platdata(&h1940_ts_cfg);
 693         s3c_i2c0_set_platdata(NULL);
 694
 695         /* Turn off suspend on both USB ports, and switch the
 696          * selectable USB port to USB device mode. */
 697
 698         s3c2410_modify_misccr(S3C2410_MISCCR_USBHOST |
 699                               S3C2410_MISCCR_USBSUSPND0 |
 700                               S3C2410_MISCCR_USBSUSPND1, 0x0);
 701
 702         tmp =   (0x78 << S3C24XX_PLL_MDIV_SHIFT)
 703               | (0x02 << S3C24XX_PLL_PDIV_SHIFT)
 704               | (0x03 << S3C24XX_PLL_SDIV_SHIFT);
 705         writel(tmp, S3C2410_UPLLCON);
 706
 707         gpio_request(S3C2410_GPC(0), "LCD power");
 708         gpio_request(S3C2410_GPC(1), "LCD power");
 709         gpio_request(S3C2410_GPC(4), "LCD power");
 710         gpio_request(S3C2410_GPC(5), "LCD power");
 711         gpio_request(S3C2410_GPC(6), "LCD power");
 712         gpio_request(H1940_LATCH_LCD_P0, "LCD power");
 713         gpio_request(H1940_LATCH_LCD_P1, "LCD power");
 714         gpio_request(H1940_LATCH_LCD_P2, "LCD power");
 715         gpio_request(H1940_LATCH_LCD_P3, "LCD power");
 716         gpio_request(H1940_LATCH_LCD_P4, "LCD power");
 717         gpio_request(H1940_LATCH_MAX1698_nSHUTDOWN, "LCD power");
 718         gpio_direction_output(S3C2410_GPC(0), 0);
 719         gpio_direction_output(S3C2410_GPC(1), 0);
 720         gpio_direction_output(S3C2410_GPC(4), 0);
 721         gpio_direction_output(S3C2410_GPC(5), 0);
 722         gpio_direction_input(S3C2410_GPC(6));
 723         gpio_direction_output(H1940_LATCH_LCD_P0, 0);
 724         gpio_direction_output(H1940_LATCH_LCD_P1, 0);
 725         gpio_direction_output(H1940_LATCH_LCD_P2, 0);
 726         gpio_direction_output(H1940_LATCH_LCD_P3, 0);
 727         gpio_direction_output(H1940_LATCH_LCD_P4, 0);
 728         gpio_direction_output(H1940_LATCH_MAX1698_nSHUTDOWN, 0);
 729
 730         gpio_request(H1940_LATCH_SD_POWER, "SD power");
 731         gpio_direction_output(H1940_LATCH_SD_POWER, 0);
 732
 733         platform_add_devices(h1940_devices, ARRAY_SIZE(h1940_devices));
 734
 735         gpio_request(S3C2410_GPA(1), "Red LED blink");
 736         gpio_request(S3C2410_GPA(3), "Blue LED blink");
 737         gpio_request(S3C2410_GPA(7), "Green LED blink");
 738         gpio_request(H1940_LATCH_LED_FLASH, "LED blink");
 739         gpio_direction_output(S3C2410_GPA(1), 0);
 740         gpio_direction_output(S3C2410_GPA(3), 0);
 741         gpio_direction_output(S3C2410_GPA(7), 0);
 742         gpio_direction_output(H1940_LATCH_LED_FLASH, 0);
 743
 744         i2c_register_board_info(0, h1940_i2c_devices,
 745                 ARRAY_SIZE(h1940_i2c_devices));
 746 }
 747
 748 MACHINE_START(H1940, "IPAQ-H1940")
 749         /* Maintainer: Ben Dooks <ben-linux@fluff.org> */
 750         .atag_offset    = 0x100,
 751         .map_io         = h1940_map_io,
 752         .reserve        = h1940_reserve,
 753         .init_irq       = h1940_init_irq,
 754         .init_machine   = h1940_init,
 755         .timer          = &s3c24xx_timer,
 756         .restart        = s3c2410_restart,
 757 MACHINE_END