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/sysdev.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 <video/platform_lcd.h>
  31
  32 #include <linux/mmc/host.h>
  33
  34 #include <asm/mach/arch.h>
  35 #include <asm/mach/map.h>
  36 #include <asm/mach/irq.h>
  37
  38 #include <mach/hardware.h>
  39 #include <asm/irq.h>
  40 #include <asm/mach-types.h>
  41
  42 #include <plat/regs-serial.h>
  43 #include <mach/regs-lcd.h>
  44 #include <mach/regs-clock.h>
  45
  46 #include <mach/regs-gpio.h>
  47 #include <mach/gpio-fns.h>
  48 #include <mach/gpio-nrs.h>
  49
  50 #include <mach/h1940.h>
  51 #include <mach/h1940-latch.h>
  52 #include <mach/fb.h>
  53 #include <plat/udc.h>
  54 #include <plat/iic.h>
  55
  56 #include <plat/gpio-cfg.h>
  57 #include <plat/clock.h>
  58 #include <plat/devs.h>
  59 #include <plat/cpu.h>
  60 #include <plat/pll.h>
  61 #include <plat/pm.h>
  62 #include <plat/mci.h>
  63 #include <plat/ts.h>
  64
  65 #include <sound/uda1380.h>
  66
  67 #define H1940_LATCH             ((void __force __iomem *)0xF8000000)
  68
  69 #define H1940_PA_LATCH          S3C2410_CS2
  70
  71 #define H1940_LATCH_BIT(x)      (1 << ((x) + 16 - S3C_GPIO_END))
  72
  73 static struct map_desc h1940_iodesc[] __initdata = {
  74         [0] = {
  75                 .virtual        = (unsigned long)H1940_LATCH,
  76                 .pfn            = __phys_to_pfn(H1940_PA_LATCH),
  77                 .length         = SZ_16K,
  78                 .type           = MT_DEVICE
  79         },
  80 };
  81
  82 #define UCON S3C2410_UCON_DEFAULT | S3C2410_UCON_UCLK
  83 #define ULCON S3C2410_LCON_CS8 | S3C2410_LCON_PNONE | S3C2410_LCON_STOPB
  84 #define UFCON S3C2410_UFCON_RXTRIG8 | S3C2410_UFCON_FIFOMODE
  85
  86 static struct s3c2410_uartcfg h1940_uartcfgs[] __initdata = {
  87         [0] = {
  88                 .hwport      = 0,
  89                 .flags       = 0,
  90                 .ucon        = 0x3c5,
  91                 .ulcon       = 0x03,
  92                 .ufcon       = 0x51,
  93         },
  94         [1] = {
  95                 .hwport      = 1,
  96                 .flags       = 0,
  97                 .ucon        = 0x245,
  98                 .ulcon       = 0x03,
  99                 .ufcon       = 0x00,
 100         },
 101         /* IR port */
 102         [2] = {
 103                 .hwport      = 2,
 104                 .flags       = 0,
 105                 .uart_flags  = UPF_CONS_FLOW,
 106                 .ucon        = 0x3c5,
 107                 .ulcon       = 0x43,
 108                 .ufcon       = 0x51,
 109         }
 110 };
 111
 112 /* Board control latch control */
 113
 114 static unsigned int latch_state;
 115
 116 static void h1940_latch_control(unsigned int clear, unsigned int set)
 117 {
 118         unsigned long flags;
 119
 120         local_irq_save(flags);
 121
 122         latch_state &= ~clear;
 123         latch_state |= set;
 124
 125         __raw_writel(latch_state, H1940_LATCH);
 126
 127         local_irq_restore(flags);
 128 }
 129
 130 static inline int h1940_gpiolib_to_latch(int offset)
 131 {
 132         return 1 << (offset + 16);
 133 }
 134
 135 static void h1940_gpiolib_latch_set(struct gpio_chip *chip,
 136                                         unsigned offset, int value)
 137 {
 138         int latch_bit = h1940_gpiolib_to_latch(offset);
 139
 140         h1940_latch_control(value ? 0 : latch_bit,
 141                 value ? latch_bit : 0);
 142 }
 143
 144 static int h1940_gpiolib_latch_output(struct gpio_chip *chip,
 145                                         unsigned offset, int value)
 146 {
 147         h1940_gpiolib_latch_set(chip, offset, value);
 148         return 0;
 149 }
 150
 151 static int h1940_gpiolib_latch_get(struct gpio_chip *chip,
 152                                         unsigned offset)
 153 {
 154         return (latch_state >> (offset + 16)) & 1;
 155 }
 156
 157 struct gpio_chip h1940_latch_gpiochip = {
 158         .base                   = H1940_LATCH_GPIO(0),
 159         .owner                  = THIS_MODULE,
 160         .label                  = "H1940_LATCH",
 161         .ngpio                  = 16,
 162         .direction_output       = h1940_gpiolib_latch_output,
 163         .set                    = h1940_gpiolib_latch_set,
 164         .get                    = h1940_gpiolib_latch_get,
 165 };
 166
 167 static struct s3c2410_udc_mach_info h1940_udc_cfg __initdata = {
 168         .vbus_pin               = S3C2410_GPG(5),
 169         .vbus_pin_inverted      = 1,
 170         .pullup_pin             = H1940_LATCH_USB_DP,
 171 };
 172
 173 static struct s3c2410_ts_mach_info h1940_ts_cfg __initdata = {
 174                 .delay = 10000,
 175                 .presc = 49,
 176                 .oversampling_shift = 2,
 177                 .cfg_gpio = s3c24xx_ts_cfg_gpio,
 178 };
 179
 180 /**
 181  * Set lcd on or off
 182  **/
 183 static struct s3c2410fb_display h1940_lcd __initdata = {
 184         .lcdcon5=       S3C2410_LCDCON5_FRM565 | \
 185                         S3C2410_LCDCON5_INVVLINE | \
 186                         S3C2410_LCDCON5_HWSWP,
 187
 188         .type =         S3C2410_LCDCON1_TFT,
 189         .width =        240,
 190         .height =       320,
 191         .pixclock =     260000,
 192         .xres =         240,
 193         .yres =         320,
 194         .bpp =          16,
 195         .left_margin =  8,
 196         .right_margin = 20,
 197         .hsync_len =    4,
 198         .upper_margin = 8,
 199         .lower_margin = 7,
 200         .vsync_len =    1,
 201 };
 202
 203 static struct s3c2410fb_mach_info h1940_fb_info __initdata = {
 204         .displays = &h1940_lcd,
 205         .num_displays = 1,
 206         .default_display = 0,
 207
 208         .lpcsel=        0x02,
 209         .gpccon=        0xaa940659,
 210         .gpccon_mask=   0xffffffff,
 211         .gpcup=         0x0000ffff,
 212         .gpcup_mask=    0xffffffff,
 213         .gpdcon=        0xaa84aaa0,
 214         .gpdcon_mask=   0xffffffff,
 215         .gpdup=         0x0000faff,
 216         .gpdup_mask=    0xffffffff,
 217 };
 218
 219 static struct platform_device h1940_device_leds = {
 220         .name             = "h1940-leds",
 221         .id               = -1,
 222 };
 223
 224 static struct platform_device h1940_device_bluetooth = {
 225         .name             = "h1940-bt",
 226         .id               = -1,
 227 };
 228
 229 static void h1940_set_mmc_power(unsigned char power_mode, unsigned short vdd)
 230 {
 231         switch (power_mode) {
 232         case MMC_POWER_OFF:
 233                 gpio_set_value(H1940_LATCH_SD_POWER, 0);
 234                 break;
 235         case MMC_POWER_UP:
 236         case MMC_POWER_ON:
 237                 gpio_set_value(H1940_LATCH_SD_POWER, 1);
 238                 break;
 239         default:
 240                 break;
 241         };
 242 }
 243
 244 static struct s3c24xx_mci_pdata h1940_mmc_cfg __initdata = {
 245         .gpio_detect   = S3C2410_GPF(5),
 246         .gpio_wprotect = S3C2410_GPH(8),
 247         .set_power     = h1940_set_mmc_power,
 248         .ocr_avail     = MMC_VDD_32_33,
 249 };
 250
 251 static int h1940_backlight_init(struct device *dev)
 252 {
 253         gpio_request(S3C2410_GPB(0), "Backlight");
 254
 255         gpio_direction_output(S3C2410_GPB(0), 0);
 256         s3c_gpio_setpull(S3C2410_GPB(0), S3C_GPIO_PULL_NONE);
 257         s3c_gpio_cfgpin(S3C2410_GPB(0), S3C2410_GPB0_TOUT0);
 258         gpio_set_value(H1940_LATCH_MAX1698_nSHUTDOWN, 1);
 259
 260         return 0;
 261 }
 262
 263 static int h1940_backlight_notify(struct device *dev, int brightness)
 264 {
 265         if (!brightness) {
 266                 gpio_direction_output(S3C2410_GPB(0), 1);
 267                 gpio_set_value(H1940_LATCH_MAX1698_nSHUTDOWN, 0);
 268         } else {
 269                 gpio_direction_output(S3C2410_GPB(0), 0);
 270                 s3c_gpio_setpull(S3C2410_GPB(0), S3C_GPIO_PULL_NONE);
 271                 s3c_gpio_cfgpin(S3C2410_GPB(0), S3C2410_GPB0_TOUT0);
 272                 gpio_set_value(H1940_LATCH_MAX1698_nSHUTDOWN, 1);
 273         }
 274         return brightness;
 275 }
 276
 277 static void h1940_backlight_exit(struct device *dev)
 278 {
 279         gpio_direction_output(S3C2410_GPB(0), 1);
 280         gpio_set_value(H1940_LATCH_MAX1698_nSHUTDOWN, 0);
 281 }
 282
 283
 284 static struct platform_pwm_backlight_data backlight_data = {
 285         .pwm_id         = 0,
 286         .max_brightness = 100,
 287         .dft_brightness = 50,
 288         /* tcnt = 0x31 */
 289         .pwm_period_ns  = 36296,
 290         .init           = h1940_backlight_init,
 291         .notify         = h1940_backlight_notify,
 292         .exit           = h1940_backlight_exit,
 293 };
 294
 295 static struct platform_device h1940_backlight = {
 296         .name = "pwm-backlight",
 297         .dev  = {
 298                 .parent = &s3c_device_timer[0].dev,
 299                 .platform_data = &backlight_data,
 300         },
 301         .id   = -1,
 302 };
 303
 304 static void h1940_lcd_power_set(struct plat_lcd_data *pd,
 305                                         unsigned int power)
 306 {
 307         int value;
 308
 309         if (!power) {
 310                 gpio_set_value(S3C2410_GPC(0), 0);
 311                 /* wait for 3ac */
 312                 do {
 313                         value = gpio_get_value(S3C2410_GPC(6));
 314                 } while (value);
 315
 316                 gpio_set_value(H1940_LATCH_LCD_P2, 0);
 317                 gpio_set_value(H1940_LATCH_LCD_P3, 0);
 318                 gpio_set_value(H1940_LATCH_LCD_P4, 0);
 319
 320                 gpio_direction_output(S3C2410_GPC(1), 0);
 321                 gpio_direction_output(S3C2410_GPC(4), 0);
 322
 323                 gpio_set_value(H1940_LATCH_LCD_P1, 0);
 324                 gpio_set_value(H1940_LATCH_LCD_P0, 0);
 325
 326                 gpio_set_value(S3C2410_GPC(5), 0);
 327
 328         } else {
 329                 gpio_set_value(H1940_LATCH_LCD_P0, 1);
 330                 gpio_set_value(H1940_LATCH_LCD_P1, 1);
 331
 332                 s3c_gpio_cfgpin(S3C2410_GPC(1), S3C_GPIO_SFN(2));
 333                 s3c_gpio_cfgpin(S3C2410_GPC(4), S3C_GPIO_SFN(2));
 334
 335                 gpio_set_value(S3C2410_GPC(5), 1);
 336                 gpio_set_value(S3C2410_GPC(0), 1);
 337
 338                 gpio_set_value(H1940_LATCH_LCD_P3, 1);
 339                 gpio_set_value(H1940_LATCH_LCD_P2, 1);
 340                 gpio_set_value(H1940_LATCH_LCD_P4, 1);
 341         }
 342 }
 343
 344 static struct plat_lcd_data h1940_lcd_power_data = {
 345         .set_power      = h1940_lcd_power_set,
 346 };
 347
 348 static struct platform_device h1940_lcd_powerdev = {
 349         .name                   = "platform-lcd",
 350         .dev.parent             = &s3c_device_lcd.dev,
 351         .dev.platform_data      = &h1940_lcd_power_data,
 352 };
 353
 354 static struct uda1380_platform_data uda1380_info = {
 355         .gpio_power     = H1940_LATCH_UDA_POWER,
 356         .gpio_reset     = S3C2410_GPA(12),
 357         .dac_clk        = UDA1380_DAC_CLK_SYSCLK,
 358 };
 359
 360 static struct i2c_board_info h1940_i2c_devices[] = {
 361         {
 362                 I2C_BOARD_INFO("uda1380", 0x1a),
 363                 .platform_data = &uda1380_info,
 364         },
 365 };
 366
 367 #define DECLARE_BUTTON(p, k, n, w)      \
 368         {                               \
 369                 .gpio           = p,    \
 370                 .code           = k,    \
 371                 .desc           = n,    \
 372                 .wakeup         = w,    \
 373                 .active_low     = 1,    \
 374         }
 375
 376 static struct gpio_keys_button h1940_buttons[] = {
 377         DECLARE_BUTTON(S3C2410_GPF(0),       KEY_POWER,          "Power", 1),
 378         DECLARE_BUTTON(S3C2410_GPF(6),       KEY_ENTER,         "Select", 1),
 379         DECLARE_BUTTON(S3C2410_GPF(7),      KEY_RECORD,         "Record", 0),
 380         DECLARE_BUTTON(S3C2410_GPG(0),         KEY_F11,       "Calendar", 0),
 381         DECLARE_BUTTON(S3C2410_GPG(2),         KEY_F12,       "Contacts", 0),
 382         DECLARE_BUTTON(S3C2410_GPG(3),        KEY_MAIL,           "Mail", 0),
 383         DECLARE_BUTTON(S3C2410_GPG(6),        KEY_LEFT,     "Left_arrow", 0),
 384         DECLARE_BUTTON(S3C2410_GPG(7),    KEY_HOMEPAGE,           "Home", 0),
 385         DECLARE_BUTTON(S3C2410_GPG(8),       KEY_RIGHT,    "Right_arrow", 0),
 386         DECLARE_BUTTON(S3C2410_GPG(9),          KEY_UP,       "Up_arrow", 0),
 387         DECLARE_BUTTON(S3C2410_GPG(10),       KEY_DOWN,     "Down_arrow", 0),
 388 };
 389
 390 static struct gpio_keys_platform_data h1940_buttons_data = {
 391         .buttons        = h1940_buttons,
 392         .nbuttons       = ARRAY_SIZE(h1940_buttons),
 393 };
 394
 395 static struct platform_device h1940_dev_buttons = {
 396         .name           = "gpio-keys",
 397         .id             = -1,
 398         .dev            = {
 399                 .platform_data  = &h1940_buttons_data,
 400         }
 401 };
 402
 403 static struct platform_device *h1940_devices[] __initdata = {
 404         &h1940_dev_buttons,
 405         &s3c_device_ohci,
 406         &s3c_device_lcd,
 407         &s3c_device_wdt,
 408         &s3c_device_i2c0,
 409         &s3c_device_iis,
 410         &samsung_asoc_dma,
 411         &s3c_device_usbgadget,
 412         &h1940_device_leds,
 413         &h1940_device_bluetooth,
 414         &s3c_device_sdi,
 415         &s3c_device_rtc,
 416         &s3c_device_timer[0],
 417         &h1940_backlight,
 418         &h1940_lcd_powerdev,
 419         &s3c_device_adc,
 420         &s3c_device_ts,
 421 };
 422
 423 static void __init h1940_map_io(void)
 424 {
 425         s3c24xx_init_io(h1940_iodesc, ARRAY_SIZE(h1940_iodesc));
 426         s3c24xx_init_clocks(0);
 427         s3c24xx_init_uarts(h1940_uartcfgs, ARRAY_SIZE(h1940_uartcfgs));
 428
 429         /* setup PM */
 430
 431 #ifdef CONFIG_PM_H1940
 432         memcpy(phys_to_virt(H1940_SUSPEND_RESUMEAT), h1940_pm_return, 1024);
 433 #endif
 434         s3c_pm_init();
 435
 436         /* Add latch gpio chip, set latch initial value */
 437         h1940_latch_control(0, 0);
 438         WARN_ON(gpiochip_add(&h1940_latch_gpiochip));
 439 }
 440
 441 /* H1940 and RX3715 need to reserve this for suspend */
 442 static void __init h1940_reserve(void)
 443 {
 444         memblock_reserve(0x30003000, 0x1000);
 445         memblock_reserve(0x30081000, 0x1000);
 446 }
 447
 448 static void __init h1940_init_irq(void)
 449 {
 450         s3c24xx_init_irq();
 451 }
 452
 453 static void __init h1940_init(void)
 454 {
 455         u32 tmp;
 456
 457         s3c24xx_fb_set_platdata(&h1940_fb_info);
 458         s3c24xx_mci_set_platdata(&h1940_mmc_cfg);
 459         s3c24xx_udc_set_platdata(&h1940_udc_cfg);
 460         s3c24xx_ts_set_platdata(&h1940_ts_cfg);
 461         s3c_i2c0_set_platdata(NULL);
 462
 463         /* Turn off suspend on both USB ports, and switch the
 464          * selectable USB port to USB device mode. */
 465
 466         s3c2410_modify_misccr(S3C2410_MISCCR_USBHOST |
 467                               S3C2410_MISCCR_USBSUSPND0 |
 468                               S3C2410_MISCCR_USBSUSPND1, 0x0);
 469
 470         tmp =   (0x78 << S3C24XX_PLLCON_MDIVSHIFT)
 471               | (0x02 << S3C24XX_PLLCON_PDIVSHIFT)
 472               | (0x03 << S3C24XX_PLLCON_SDIVSHIFT);
 473         writel(tmp, S3C2410_UPLLCON);
 474
 475         gpio_request(S3C2410_GPC(0), "LCD power");
 476         gpio_request(S3C2410_GPC(1), "LCD power");
 477         gpio_request(S3C2410_GPC(4), "LCD power");
 478         gpio_request(S3C2410_GPC(5), "LCD power");
 479         gpio_request(S3C2410_GPC(6), "LCD power");
 480         gpio_request(H1940_LATCH_LCD_P0, "LCD power");
 481         gpio_request(H1940_LATCH_LCD_P1, "LCD power");
 482         gpio_request(H1940_LATCH_LCD_P2, "LCD power");
 483         gpio_request(H1940_LATCH_LCD_P3, "LCD power");
 484         gpio_request(H1940_LATCH_LCD_P4, "LCD power");
 485         gpio_request(H1940_LATCH_MAX1698_nSHUTDOWN, "LCD power");
 486         gpio_direction_output(S3C2410_GPC(0), 0);
 487         gpio_direction_output(S3C2410_GPC(1), 0);
 488         gpio_direction_output(S3C2410_GPC(4), 0);
 489         gpio_direction_output(S3C2410_GPC(5), 0);
 490         gpio_direction_input(S3C2410_GPC(6));
 491         gpio_direction_output(H1940_LATCH_LCD_P0, 0);
 492         gpio_direction_output(H1940_LATCH_LCD_P1, 0);
 493         gpio_direction_output(H1940_LATCH_LCD_P2, 0);
 494         gpio_direction_output(H1940_LATCH_LCD_P3, 0);
 495         gpio_direction_output(H1940_LATCH_LCD_P4, 0);
 496         gpio_direction_output(H1940_LATCH_MAX1698_nSHUTDOWN, 0);
 497
 498         gpio_request(H1940_LATCH_SD_POWER, "SD power");
 499         gpio_direction_output(H1940_LATCH_SD_POWER, 0);
 500
 501         platform_add_devices(h1940_devices, ARRAY_SIZE(h1940_devices));
 502
 503         i2c_register_board_info(0, h1940_i2c_devices,
 504                 ARRAY_SIZE(h1940_i2c_devices));
 505 }
 506
 507 MACHINE_START(H1940, "IPAQ-H1940")
 508         /* Maintainer: Ben Dooks <ben-linux@fluff.org> */
 509         .boot_params    = S3C2410_SDRAM_PA + 0x100,
 510         .map_io         = h1940_map_io,
 511         .reserve        = h1940_reserve,
 512         .init_irq       = h1940_init_irq,
 513         .init_machine   = h1940_init,
 514         .timer          = &s3c24xx_timer,
 515 MACHINE_END