arch/arm/mach-s3c/mach-h1940.c

   1 // SPDX-License-Identifier: GPL-2.0
   2 //
   3 // Copyright (c) 2003-2005 Simtec Electronics
   4 //   Ben Dooks <ben@simtec.co.uk>
   5 //
   6 // https://www.handhelds.org/projects/h1940.html
   7
   8 #include <linux/kernel.h>
   9 #include <linux/types.h>
  10 #include <linux/interrupt.h>
  11 #include <linux/list.h>
  12 #include <linux/memblock.h>
  13 #include <linux/timer.h>
  14 #include <linux/init.h>
  15 #include <linux/device.h>
  16 #include <linux/serial_core.h>
  17 #include <linux/serial_s3c.h>
  18 #include <linux/platform_device.h>
  19 #include <linux/io.h>
  20 #include <linux/gpio.h>
  21 #include <linux/gpio/machine.h>
  22 #include <linux/input.h>
  23 #include <linux/gpio_keys.h>
  24 #include <linux/pwm.h>
  25 #include <linux/pwm_backlight.h>
  26 #include <linux/i2c.h>
  27 #include <linux/leds.h>
  28 #include <linux/pda_power.h>
  29 #include <linux/s3c_adc_battery.h>
  30 #include <linux/delay.h>
  31
  32 #include <video/platform_lcd.h>
  33
  34 #include <linux/mmc/host.h>
  35 #include <linux/export.h>
  36
  37 #include <asm/irq.h>
  38 #include <asm/mach-types.h>
  39 #include <asm/mach/arch.h>
  40 #include <asm/mach/map.h>
  41 #include <asm/mach/irq.h>
  42
  43 #include <linux/platform_data/i2c-s3c2410.h>
  44 #include <linux/platform_data/mmc-s3cmci.h>
  45 #include <linux/platform_data/touchscreen-s3c2410.h>
  46 #include <linux/platform_data/usb-s3c2410_udc.h>
  47
  48 #include <sound/uda1380.h>
  49
  50 #include <linux/platform_data/fb-s3c2410.h>
  51 #include "map.h"
  52 #include "hardware-s3c24xx.h"
  53 #include "regs-clock.h"
  54 #include "regs-gpio.h"
  55 #include "gpio-samsung.h"
  56
  57 #include "cpu.h"
  58 #include "devs.h"
  59 #include "gpio-cfg.h"
  60 #include "pm.h"
  61
  62 #include "s3c24xx.h"
  63 #include "h1940.h"
  64
  65 #define H1940_LATCH             ((void __force __iomem *)0xF8000000)
  66
  67 #define H1940_PA_LATCH          S3C2410_CS2
  68
  69 #define H1940_LATCH_BIT(x)      (1 << ((x) + 16 - S3C_GPIO_END))
  70
  71 #define S3C24XX_PLL_MDIV_SHIFT         (12)
  72 #define S3C24XX_PLL_PDIV_SHIFT         (4)
  73 #define S3C24XX_PLL_SDIV_SHIFT         (0)
  74
  75 static struct map_desc h1940_iodesc[] __initdata = {
  76         [0] = {
  77                 .virtual        = (unsigned long)H1940_LATCH,
  78                 .pfn            = __phys_to_pfn(H1940_PA_LATCH),
  79                 .length         = SZ_16K,
  80                 .type           = MT_DEVICE
  81         },
  82 };
  83
  84 #define UCON S3C2410_UCON_DEFAULT | S3C2410_UCON_UCLK
  85 #define ULCON S3C2410_LCON_CS8 | S3C2410_LCON_PNONE | S3C2410_LCON_STOPB
  86 #define UFCON S3C2410_UFCON_RXTRIG8 | S3C2410_UFCON_FIFOMODE
  87
  88 static struct s3c2410_uartcfg h1940_uartcfgs[] __initdata = {
  89         [0] = {
  90                 .hwport      = 0,
  91                 .flags       = 0,
  92                 .ucon        = 0x3c5,
  93                 .ulcon       = 0x03,
  94                 .ufcon       = 0x51,
  95         },
  96         [1] = {
  97                 .hwport      = 1,
  98                 .flags       = 0,
  99                 .ucon        = 0x245,
 100                 .ulcon       = 0x03,
 101                 .ufcon       = 0x00,
 102         },
 103         /* IR port */
 104         [2] = {
 105                 .hwport      = 2,
 106                 .flags       = 0,
 107                 .uart_flags  = UPF_CONS_FLOW,
 108                 .ucon        = 0x3c5,
 109                 .ulcon       = 0x43,
 110                 .ufcon       = 0x51,
 111         }
 112 };
 113
 114 /* Board control latch control */
 115
 116 static unsigned int latch_state;
 117
 118 static void h1940_latch_control(unsigned int clear, unsigned int set)
 119 {
 120         unsigned long flags;
 121
 122         local_irq_save(flags);
 123
 124         latch_state &= ~clear;
 125         latch_state |= set;
 126
 127         __raw_writel(latch_state, H1940_LATCH);
 128
 129         local_irq_restore(flags);
 130 }
 131
 132 static inline int h1940_gpiolib_to_latch(int offset)
 133 {
 134         return 1 << (offset + 16);
 135 }
 136
 137 static void h1940_gpiolib_latch_set(struct gpio_chip *chip,
 138                                         unsigned offset, int value)
 139 {
 140         int latch_bit = h1940_gpiolib_to_latch(offset);
 141
 142         h1940_latch_control(value ? 0 : latch_bit,
 143                 value ? latch_bit : 0);
 144 }
 145
 146 static int h1940_gpiolib_latch_output(struct gpio_chip *chip,
 147                                         unsigned offset, int value)
 148 {
 149         h1940_gpiolib_latch_set(chip, offset, value);
 150         return 0;
 151 }
 152
 153 static int h1940_gpiolib_latch_get(struct gpio_chip *chip,
 154                                         unsigned offset)
 155 {
 156         return (latch_state >> (offset + 16)) & 1;
 157 }
 158
 159 static struct gpio_chip h1940_latch_gpiochip = {
 160         .base                   = H1940_LATCH_GPIO(0),
 161         .owner                  = THIS_MODULE,
 162         .label                  = "H1940_LATCH",
 163         .ngpio                  = 16,
 164         .direction_output       = h1940_gpiolib_latch_output,
 165         .set                    = h1940_gpiolib_latch_set,
 166         .get                    = h1940_gpiolib_latch_get,
 167 };
 168
 169 static struct s3c2410_udc_mach_info h1940_udc_cfg __initdata = {
 170         .vbus_pin               = S3C2410_GPG(5),
 171         .vbus_pin_inverted      = 1,
 172         .pullup_pin             = H1940_LATCH_USB_DP,
 173 };
 174
 175 static struct s3c2410_ts_mach_info h1940_ts_cfg __initdata = {
 176                 .delay = 10000,
 177                 .presc = 49,
 178                 .oversampling_shift = 2,
 179                 .cfg_gpio = s3c24xx_ts_cfg_gpio,
 180 };
 181
 182 /*
 183  * Set lcd on or off
 184  */
 185 static struct s3c2410fb_display h1940_lcd __initdata = {
 186         .lcdcon5=       S3C2410_LCDCON5_FRM565 | \
 187                         S3C2410_LCDCON5_INVVLINE | \
 188                         S3C2410_LCDCON5_HWSWP,
 189
 190         .type =         S3C2410_LCDCON1_TFT,
 191         .width =        240,
 192         .height =       320,
 193         .pixclock =     260000,
 194         .xres =         240,
 195         .yres =         320,
 196         .bpp =          16,
 197         .left_margin =  8,
 198         .right_margin = 20,
 199         .hsync_len =    4,
 200         .upper_margin = 8,
 201         .lower_margin = 7,
 202         .vsync_len =    1,
 203 };
 204
 205 static struct s3c2410fb_mach_info h1940_fb_info __initdata = {
 206         .displays = &h1940_lcd,
 207         .num_displays = 1,
 208         .default_display = 0,
 209
 210         .lpcsel =       0x02,
 211         .gpccon =       0xaa940659,
 212         .gpccon_mask =  0xffffc0f0,
 213         .gpccon_reg =   S3C2410_GPCCON,
 214         .gpcup =        0x0000ffff,
 215         .gpcup_mask =   0xffffffff,
 216         .gpcup_reg =    S3C2410_GPCUP,
 217         .gpdcon =       0xaa84aaa0,
 218         .gpdcon_mask =  0xffffffff,
 219         .gpdcon_reg =   S3C2410_GPDCON,
 220         .gpdup =        0x0000faff,
 221         .gpdup_mask =   0xffffffff,
 222         .gpdup_reg =    S3C2410_GPDUP,
 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 struct gpiod_lookup_table h1940_bat_gpio_table = {
 301         .dev_id = "s3c-adc-battery",
 302         .table = {
 303                 /* Charge status S3C2410_GPF(3) */
 304                 GPIO_LOOKUP("GPIOF", 3, "charge-status", GPIO_ACTIVE_LOW),
 305                 { },
 306         },
 307 };
 308
 309 static int h1940_bat_init(void)
 310 {
 311         int ret;
 312
 313         ret = gpio_request(H1940_LATCH_SM803_ENABLE, "h1940-charger-enable");
 314         if (ret)
 315                 return ret;
 316         gpio_direction_output(H1940_LATCH_SM803_ENABLE, 0);
 317
 318         return 0;
 319
 320 }
 321
 322 static void h1940_bat_exit(void)
 323 {
 324         gpio_free(H1940_LATCH_SM803_ENABLE);
 325 }
 326
 327 static void h1940_enable_charger(void)
 328 {
 329         gpio_set_value(H1940_LATCH_SM803_ENABLE, 1);
 330 }
 331
 332 static void h1940_disable_charger(void)
 333 {
 334         gpio_set_value(H1940_LATCH_SM803_ENABLE, 0);
 335 }
 336
 337 static struct s3c_adc_bat_pdata h1940_bat_cfg = {
 338         .init = h1940_bat_init,
 339         .exit = h1940_bat_exit,
 340         .enable_charger = h1940_enable_charger,
 341         .disable_charger = h1940_disable_charger,
 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 static DEFINE_SPINLOCK(h1940_blink_spin);
 368
 369 int h1940_led_blink_set(struct gpio_desc *desc, int state,
 370         unsigned long *delay_on, unsigned long *delay_off)
 371 {
 372         int blink_gpio, check_gpio1, check_gpio2;
 373         int gpio = desc ? desc_to_gpio(desc) : -EINVAL;
 374
 375         switch (gpio) {
 376         case H1940_LATCH_LED_GREEN:
 377                 blink_gpio = S3C2410_GPA(7);
 378                 check_gpio1 = S3C2410_GPA(1);
 379                 check_gpio2 = S3C2410_GPA(3);
 380                 break;
 381         case H1940_LATCH_LED_RED:
 382                 blink_gpio = S3C2410_GPA(1);
 383                 check_gpio1 = S3C2410_GPA(7);
 384                 check_gpio2 = S3C2410_GPA(3);
 385                 break;
 386         default:
 387                 blink_gpio = S3C2410_GPA(3);
 388                 check_gpio1 = S3C2410_GPA(1);
 389                 check_gpio2 = S3C2410_GPA(7);
 390                 break;
 391         }
 392
 393         if (delay_on && delay_off && !*delay_on && !*delay_off)
 394                 *delay_on = *delay_off = 500;
 395
 396         spin_lock(&h1940_blink_spin);
 397
 398         switch (state) {
 399         case GPIO_LED_NO_BLINK_LOW:
 400         case GPIO_LED_NO_BLINK_HIGH:
 401                 if (!gpio_get_value(check_gpio1) &&
 402                     !gpio_get_value(check_gpio2))
 403                         gpio_set_value(H1940_LATCH_LED_FLASH, 0);
 404                 gpio_set_value(blink_gpio, 0);
 405                 if (gpio_is_valid(gpio))
 406                         gpio_set_value(gpio, state);
 407                 break;
 408         case GPIO_LED_BLINK:
 409                 if (gpio_is_valid(gpio))
 410                         gpio_set_value(gpio, 0);
 411                 gpio_set_value(H1940_LATCH_LED_FLASH, 1);
 412                 gpio_set_value(blink_gpio, 1);
 413                 break;
 414         }
 415
 416         spin_unlock(&h1940_blink_spin);
 417
 418         return 0;
 419 }
 420 EXPORT_SYMBOL(h1940_led_blink_set);
 421
 422 static struct gpio_led h1940_leds_desc[] = {
 423         {
 424                 .name                   = "Green",
 425                 .default_trigger        = "main-battery-full",
 426                 .gpio                   = H1940_LATCH_LED_GREEN,
 427                 .retain_state_suspended = 1,
 428         },
 429         {
 430                 .name                   = "Red",
 431                 .default_trigger
 432                         = "main-battery-charging-blink-full-solid",
 433                 .gpio                   = H1940_LATCH_LED_RED,
 434                 .retain_state_suspended = 1,
 435         },
 436 };
 437
 438 static struct gpio_led_platform_data h1940_leds_pdata = {
 439         .num_leds       = ARRAY_SIZE(h1940_leds_desc),
 440         .leds           = h1940_leds_desc,
 441         .gpio_blink_set = h1940_led_blink_set,
 442 };
 443
 444 static struct platform_device h1940_device_leds = {
 445         .name   = "leds-gpio",
 446         .id     = -1,
 447         .dev    = {
 448                         .platform_data = &h1940_leds_pdata,
 449         },
 450 };
 451
 452 static struct platform_device h1940_device_bluetooth = {
 453         .name             = "h1940-bt",
 454         .id               = -1,
 455 };
 456
 457 static void h1940_set_mmc_power(unsigned char power_mode, unsigned short vdd)
 458 {
 459         s3c24xx_mci_def_set_power(power_mode, vdd);
 460
 461         switch (power_mode) {
 462         case MMC_POWER_OFF:
 463                 gpio_set_value(H1940_LATCH_SD_POWER, 0);
 464                 break;
 465         case MMC_POWER_UP:
 466         case MMC_POWER_ON:
 467                 gpio_set_value(H1940_LATCH_SD_POWER, 1);
 468                 break;
 469         default:
 470                 break;
 471         }
 472 }
 473
 474 static struct s3c24xx_mci_pdata h1940_mmc_cfg __initdata = {
 475         .set_power     = h1940_set_mmc_power,
 476         .ocr_avail     = MMC_VDD_32_33,
 477 };
 478
 479 static struct gpiod_lookup_table h1940_mmc_gpio_table = {
 480         .dev_id = "s3c2410-sdi",
 481         .table = {
 482                 /* Card detect S3C2410_GPF(5) */
 483                 GPIO_LOOKUP("GPIOF", 5, "cd", GPIO_ACTIVE_LOW),
 484                 /* Write protect S3C2410_GPH(8) */
 485                 GPIO_LOOKUP("GPIOH", 8, "wp", GPIO_ACTIVE_LOW),
 486                 /* bus pins */
 487                 GPIO_LOOKUP_IDX("GPIOE",  5, "bus", 0, GPIO_ACTIVE_HIGH),
 488                 GPIO_LOOKUP_IDX("GPIOE",  6, "bus", 1, GPIO_ACTIVE_HIGH),
 489                 GPIO_LOOKUP_IDX("GPIOE",  7, "bus", 2, GPIO_ACTIVE_HIGH),
 490                 GPIO_LOOKUP_IDX("GPIOE",  8, "bus", 3, GPIO_ACTIVE_HIGH),
 491                 GPIO_LOOKUP_IDX("GPIOE",  9, "bus", 4, GPIO_ACTIVE_HIGH),
 492                 GPIO_LOOKUP_IDX("GPIOE", 10, "bus", 5, GPIO_ACTIVE_HIGH),
 493                 { },
 494         },
 495 };
 496
 497 static struct gpiod_lookup_table h1940_audio_gpio_table = {
 498         .dev_id = "h1940-audio",
 499         .table = {
 500                 GPIO_LOOKUP("H1940_LATCH",
 501                             H1940_LATCH_AUDIO_POWER - H1940_LATCH_GPIO(0),
 502                             "speaker-power", GPIO_ACTIVE_HIGH),
 503                 GPIO_LOOKUP("GPIOG", 4, "hp", GPIO_ACTIVE_HIGH),
 504                 { },
 505         },
 506 };
 507
 508 static struct platform_device h1940_audio = {
 509         .name = "h1940-audio",
 510         .id   = -1,
 511 };
 512
 513 static struct pwm_lookup h1940_pwm_lookup[] = {
 514         PWM_LOOKUP("samsung-pwm", 0, "pwm-backlight", NULL, 36296,
 515                    PWM_POLARITY_NORMAL),
 516 };
 517
 518 static int h1940_backlight_init(struct device *dev)
 519 {
 520         gpio_request(S3C2410_GPB(0), "Backlight");
 521
 522         gpio_direction_output(S3C2410_GPB(0), 0);
 523         s3c_gpio_setpull(S3C2410_GPB(0), S3C_GPIO_PULL_NONE);
 524         s3c_gpio_cfgpin(S3C2410_GPB(0), S3C2410_GPB0_TOUT0);
 525         gpio_set_value(H1940_LATCH_MAX1698_nSHUTDOWN, 1);
 526
 527         return 0;
 528 }
 529
 530 static int h1940_backlight_notify(struct device *dev, int brightness)
 531 {
 532         if (!brightness) {
 533                 gpio_direction_output(S3C2410_GPB(0), 1);
 534                 gpio_set_value(H1940_LATCH_MAX1698_nSHUTDOWN, 0);
 535         } else {
 536                 gpio_direction_output(S3C2410_GPB(0), 0);
 537                 s3c_gpio_setpull(S3C2410_GPB(0), S3C_GPIO_PULL_NONE);
 538                 s3c_gpio_cfgpin(S3C2410_GPB(0), S3C2410_GPB0_TOUT0);
 539                 gpio_set_value(H1940_LATCH_MAX1698_nSHUTDOWN, 1);
 540         }
 541         return brightness;
 542 }
 543
 544 static void h1940_backlight_exit(struct device *dev)
 545 {
 546         gpio_direction_output(S3C2410_GPB(0), 1);
 547         gpio_set_value(H1940_LATCH_MAX1698_nSHUTDOWN, 0);
 548 }
 549
 550
 551 static struct platform_pwm_backlight_data backlight_data = {
 552         .max_brightness = 100,
 553         .dft_brightness = 50,
 554         .init           = h1940_backlight_init,
 555         .notify         = h1940_backlight_notify,
 556         .exit           = h1940_backlight_exit,
 557 };
 558
 559 static struct platform_device h1940_backlight = {
 560         .name = "pwm-backlight",
 561         .dev  = {
 562                 .parent = &samsung_device_pwm.dev,
 563                 .platform_data = &backlight_data,
 564         },
 565         .id   = -1,
 566 };
 567
 568 static void h1940_lcd_power_set(struct plat_lcd_data *pd,
 569                                         unsigned int power)
 570 {
 571         int value, retries = 100;
 572
 573         if (!power) {
 574                 gpio_set_value(S3C2410_GPC(0), 0);
 575                 /* wait for 3ac */
 576                 do {
 577                         value = gpio_get_value(S3C2410_GPC(6));
 578                 } while (value && retries--);
 579
 580                 gpio_set_value(H1940_LATCH_LCD_P2, 0);
 581                 gpio_set_value(H1940_LATCH_LCD_P3, 0);
 582                 gpio_set_value(H1940_LATCH_LCD_P4, 0);
 583
 584                 gpio_direction_output(S3C2410_GPC(1), 0);
 585                 gpio_direction_output(S3C2410_GPC(4), 0);
 586
 587                 gpio_set_value(H1940_LATCH_LCD_P1, 0);
 588                 gpio_set_value(H1940_LATCH_LCD_P0, 0);
 589
 590                 gpio_set_value(S3C2410_GPC(5), 0);
 591
 592         } else {
 593                 gpio_set_value(H1940_LATCH_LCD_P0, 1);
 594                 gpio_set_value(H1940_LATCH_LCD_P1, 1);
 595
 596                 gpio_direction_input(S3C2410_GPC(1));
 597                 gpio_direction_input(S3C2410_GPC(4));
 598                 mdelay(10);
 599                 s3c_gpio_cfgpin(S3C2410_GPC(1), S3C_GPIO_SFN(2));
 600                 s3c_gpio_cfgpin(S3C2410_GPC(4), S3C_GPIO_SFN(2));
 601
 602                 gpio_set_value(S3C2410_GPC(5), 1);
 603                 gpio_set_value(S3C2410_GPC(0), 1);
 604
 605                 gpio_set_value(H1940_LATCH_LCD_P3, 1);
 606                 gpio_set_value(H1940_LATCH_LCD_P2, 1);
 607                 gpio_set_value(H1940_LATCH_LCD_P4, 1);
 608         }
 609 }
 610
 611 static struct plat_lcd_data h1940_lcd_power_data = {
 612         .set_power      = h1940_lcd_power_set,
 613 };
 614
 615 static struct platform_device h1940_lcd_powerdev = {
 616         .name                   = "platform-lcd",
 617         .dev.parent             = &s3c_device_lcd.dev,
 618         .dev.platform_data      = &h1940_lcd_power_data,
 619 };
 620
 621 static struct uda1380_platform_data uda1380_info = {
 622         .gpio_power     = H1940_LATCH_UDA_POWER,
 623         .gpio_reset     = S3C2410_GPA(12),
 624         .dac_clk        = UDA1380_DAC_CLK_SYSCLK,
 625 };
 626
 627 static struct i2c_board_info h1940_i2c_devices[] = {
 628         {
 629                 I2C_BOARD_INFO("uda1380", 0x1a),
 630                 .platform_data = &uda1380_info,
 631         },
 632 };
 633
 634 #define DECLARE_BUTTON(p, k, n, w)      \
 635         {                               \
 636                 .gpio           = p,    \
 637                 .code           = k,    \
 638                 .desc           = n,    \
 639                 .wakeup         = w,    \
 640                 .active_low     = 1,    \
 641         }
 642
 643 static struct gpio_keys_button h1940_buttons[] = {
 644         DECLARE_BUTTON(S3C2410_GPF(0),       KEY_POWER,          "Power", 1),
 645         DECLARE_BUTTON(S3C2410_GPF(6),       KEY_ENTER,         "Select", 1),
 646         DECLARE_BUTTON(S3C2410_GPF(7),      KEY_RECORD,         "Record", 0),
 647         DECLARE_BUTTON(S3C2410_GPG(0),         KEY_F11,       "Calendar", 0),
 648         DECLARE_BUTTON(S3C2410_GPG(2),         KEY_F12,       "Contacts", 0),
 649         DECLARE_BUTTON(S3C2410_GPG(3),        KEY_MAIL,           "Mail", 0),
 650         DECLARE_BUTTON(S3C2410_GPG(6),        KEY_LEFT,     "Left_arrow", 0),
 651         DECLARE_BUTTON(S3C2410_GPG(7),    KEY_HOMEPAGE,           "Home", 0),
 652         DECLARE_BUTTON(S3C2410_GPG(8),       KEY_RIGHT,    "Right_arrow", 0),
 653         DECLARE_BUTTON(S3C2410_GPG(9),          KEY_UP,       "Up_arrow", 0),
 654         DECLARE_BUTTON(S3C2410_GPG(10),       KEY_DOWN,     "Down_arrow", 0),
 655 };
 656
 657 static struct gpio_keys_platform_data h1940_buttons_data = {
 658         .buttons        = h1940_buttons,
 659         .nbuttons       = ARRAY_SIZE(h1940_buttons),
 660 };
 661
 662 static struct platform_device h1940_dev_buttons = {
 663         .name           = "gpio-keys",
 664         .id             = -1,
 665         .dev            = {
 666                 .platform_data  = &h1940_buttons_data,
 667         }
 668 };
 669
 670 static struct platform_device *h1940_devices[] __initdata = {
 671         &h1940_dev_buttons,
 672         &s3c_device_ohci,
 673         &s3c_device_lcd,
 674         &s3c_device_wdt,
 675         &s3c_device_i2c0,
 676         &s3c_device_iis,
 677         &s3c_device_usbgadget,
 678         &h1940_device_leds,
 679         &h1940_device_bluetooth,
 680         &s3c_device_sdi,
 681         &s3c_device_rtc,
 682         &samsung_device_pwm,
 683         &h1940_backlight,
 684         &h1940_lcd_powerdev,
 685         &s3c_device_adc,
 686         &s3c_device_ts,
 687         &power_supply,
 688         &h1940_battery,
 689         &h1940_audio,
 690 };
 691
 692 static void __init h1940_map_io(void)
 693 {
 694         s3c24xx_init_io(h1940_iodesc, ARRAY_SIZE(h1940_iodesc));
 695         s3c24xx_init_uarts(h1940_uartcfgs, ARRAY_SIZE(h1940_uartcfgs));
 696         s3c24xx_set_timer_source(S3C24XX_PWM3, S3C24XX_PWM4);
 697
 698         /* setup PM */
 699
 700 #ifdef CONFIG_PM_H1940
 701         memcpy(phys_to_virt(H1940_SUSPEND_RESUMEAT), h1940_pm_return, 1024);
 702 #endif
 703         s3c_pm_init();
 704
 705         /* Add latch gpio chip, set latch initial value */
 706         h1940_latch_control(0, 0);
 707         WARN_ON(gpiochip_add_data(&h1940_latch_gpiochip, NULL));
 708 }
 709
 710 static void __init h1940_init_time(void)
 711 {
 712         s3c2410_init_clocks(12000000);
 713         s3c24xx_timer_init();
 714 }
 715
 716 /* H1940 and RX3715 need to reserve this for suspend */
 717 static void __init h1940_reserve(void)
 718 {
 719         memblock_reserve(0x30003000, 0x1000);
 720         memblock_reserve(0x30081000, 0x1000);
 721 }
 722
 723 static void __init h1940_init(void)
 724 {
 725         u32 tmp;
 726
 727         s3c24xx_fb_set_platdata(&h1940_fb_info);
 728         gpiod_add_lookup_table(&h1940_mmc_gpio_table);
 729         gpiod_add_lookup_table(&h1940_audio_gpio_table);
 730         gpiod_add_lookup_table(&h1940_bat_gpio_table);
 731         /* Configure the I2S pins (GPE0...GPE4) in correct mode */
 732         s3c_gpio_cfgall_range(S3C2410_GPE(0), 5, S3C_GPIO_SFN(2),
 733                               S3C_GPIO_PULL_NONE);
 734         s3c24xx_mci_set_platdata(&h1940_mmc_cfg);
 735         s3c24xx_udc_set_platdata(&h1940_udc_cfg);
 736         s3c24xx_ts_set_platdata(&h1940_ts_cfg);
 737         s3c_i2c0_set_platdata(NULL);
 738
 739         /* Turn off suspend on both USB ports, and switch the
 740          * selectable USB port to USB device mode. */
 741
 742         s3c2410_modify_misccr(S3C2410_MISCCR_USBHOST |
 743                               S3C2410_MISCCR_USBSUSPND0 |
 744                               S3C2410_MISCCR_USBSUSPND1, 0x0);
 745
 746         tmp =   (0x78 << S3C24XX_PLL_MDIV_SHIFT)
 747               | (0x02 << S3C24XX_PLL_PDIV_SHIFT)
 748               | (0x03 << S3C24XX_PLL_SDIV_SHIFT);
 749         writel(tmp, S3C2410_UPLLCON);
 750
 751         gpio_request(S3C2410_GPC(0), "LCD power");
 752         gpio_request(S3C2410_GPC(1), "LCD power");
 753         gpio_request(S3C2410_GPC(4), "LCD power");
 754         gpio_request(S3C2410_GPC(5), "LCD power");
 755         gpio_request(S3C2410_GPC(6), "LCD power");
 756         gpio_request(H1940_LATCH_LCD_P0, "LCD power");
 757         gpio_request(H1940_LATCH_LCD_P1, "LCD power");
 758         gpio_request(H1940_LATCH_LCD_P2, "LCD power");
 759         gpio_request(H1940_LATCH_LCD_P3, "LCD power");
 760         gpio_request(H1940_LATCH_LCD_P4, "LCD power");
 761         gpio_request(H1940_LATCH_MAX1698_nSHUTDOWN, "LCD power");
 762         gpio_direction_output(S3C2410_GPC(0), 0);
 763         gpio_direction_output(S3C2410_GPC(1), 0);
 764         gpio_direction_output(S3C2410_GPC(4), 0);
 765         gpio_direction_output(S3C2410_GPC(5), 0);
 766         gpio_direction_input(S3C2410_GPC(6));
 767         gpio_direction_output(H1940_LATCH_LCD_P0, 0);
 768         gpio_direction_output(H1940_LATCH_LCD_P1, 0);
 769         gpio_direction_output(H1940_LATCH_LCD_P2, 0);
 770         gpio_direction_output(H1940_LATCH_LCD_P3, 0);
 771         gpio_direction_output(H1940_LATCH_LCD_P4, 0);
 772         gpio_direction_output(H1940_LATCH_MAX1698_nSHUTDOWN, 0);
 773
 774         gpio_request(H1940_LATCH_SD_POWER, "SD power");
 775         gpio_direction_output(H1940_LATCH_SD_POWER, 0);
 776
 777         pwm_add_table(h1940_pwm_lookup, ARRAY_SIZE(h1940_pwm_lookup));
 778         platform_add_devices(h1940_devices, ARRAY_SIZE(h1940_devices));
 779
 780         gpio_request(S3C2410_GPA(1), "Red LED blink");
 781         gpio_request(S3C2410_GPA(3), "Blue LED blink");
 782         gpio_request(S3C2410_GPA(7), "Green LED blink");
 783         gpio_request(H1940_LATCH_LED_FLASH, "LED blink");
 784         gpio_direction_output(S3C2410_GPA(1), 0);
 785         gpio_direction_output(S3C2410_GPA(3), 0);
 786         gpio_direction_output(S3C2410_GPA(7), 0);
 787         gpio_direction_output(H1940_LATCH_LED_FLASH, 0);
 788
 789         i2c_register_board_info(0, h1940_i2c_devices,
 790                 ARRAY_SIZE(h1940_i2c_devices));
 791 }
 792
 793 MACHINE_START(H1940, "IPAQ-H1940")
 794         /* Maintainer: Ben Dooks <ben-linux@fluff.org> */
 795         .atag_offset    = 0x100,
 796         .map_io         = h1940_map_io,
 797         .reserve        = h1940_reserve,
 798         .init_irq       = s3c2410_init_irq,
 799         .init_machine   = h1940_init,
 800         .init_time      = h1940_init_time,
 801 MACHINE_END