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/pwm_backlight.h>
  27 #include <video/platform_lcd.h>
  28
  29 #include <linux/mmc/host.h>
  30
  31 #include <asm/mach/arch.h>
  32 #include <asm/mach/map.h>
  33 #include <asm/mach/irq.h>
  34
  35 #include <mach/hardware.h>
  36 #include <asm/irq.h>
  37 #include <asm/mach-types.h>
  38
  39 #include <plat/regs-serial.h>
  40 #include <mach/regs-lcd.h>
  41 #include <mach/regs-clock.h>
  42
  43 #include <mach/regs-gpio.h>
  44 #include <mach/gpio-fns.h>
  45 #include <mach/gpio-nrs.h>
  46
  47 #include <mach/h1940.h>
  48 #include <mach/h1940-latch.h>
  49 #include <mach/fb.h>
  50 #include <plat/udc.h>
  51 #include <plat/iic.h>
  52
  53 #include <plat/gpio-cfg.h>
  54 #include <plat/clock.h>
  55 #include <plat/devs.h>
  56 #include <plat/cpu.h>
  57 #include <plat/pll.h>
  58 #include <plat/pm.h>
  59 #include <plat/mci.h>
  60 #include <plat/ts.h>
  61
  62 #define H1940_LATCH             ((void __force __iomem *)0xF8000000)
  63
  64 #define H1940_PA_LATCH          S3C2410_CS2
  65
  66 #define H1940_LATCH_BIT(x)      (1 << ((x) + 16 - S3C_GPIO_END))
  67
  68 static struct map_desc h1940_iodesc[] __initdata = {
  69         [0] = {
  70                 .virtual        = (unsigned long)H1940_LATCH,
  71                 .pfn            = __phys_to_pfn(H1940_PA_LATCH),
  72                 .length         = SZ_16K,
  73                 .type           = MT_DEVICE
  74         },
  75 };
  76
  77 #define UCON S3C2410_UCON_DEFAULT | S3C2410_UCON_UCLK
  78 #define ULCON S3C2410_LCON_CS8 | S3C2410_LCON_PNONE | S3C2410_LCON_STOPB
  79 #define UFCON S3C2410_UFCON_RXTRIG8 | S3C2410_UFCON_FIFOMODE
  80
  81 static struct s3c2410_uartcfg h1940_uartcfgs[] __initdata = {
  82         [0] = {
  83                 .hwport      = 0,
  84                 .flags       = 0,
  85                 .ucon        = 0x3c5,
  86                 .ulcon       = 0x03,
  87                 .ufcon       = 0x51,
  88         },
  89         [1] = {
  90                 .hwport      = 1,
  91                 .flags       = 0,
  92                 .ucon        = 0x245,
  93                 .ulcon       = 0x03,
  94                 .ufcon       = 0x00,
  95         },
  96         /* IR port */
  97         [2] = {
  98                 .hwport      = 2,
  99                 .flags       = 0,
 100                 .uart_flags  = UPF_CONS_FLOW,
 101                 .ucon        = 0x3c5,
 102                 .ulcon       = 0x43,
 103                 .ufcon       = 0x51,
 104         }
 105 };
 106
 107 /* Board control latch control */
 108
 109 static unsigned int latch_state;
 110
 111 static void h1940_latch_control(unsigned int clear, unsigned int set)
 112 {
 113         unsigned long flags;
 114
 115         local_irq_save(flags);
 116
 117         latch_state &= ~clear;
 118         latch_state |= set;
 119
 120         __raw_writel(latch_state, H1940_LATCH);
 121
 122         local_irq_restore(flags);
 123 }
 124
 125 static inline int h1940_gpiolib_to_latch(int offset)
 126 {
 127         return 1 << (offset + 16);
 128 }
 129
 130 static void h1940_gpiolib_latch_set(struct gpio_chip *chip,
 131                                         unsigned offset, int value)
 132 {
 133         int latch_bit = h1940_gpiolib_to_latch(offset);
 134
 135         h1940_latch_control(value ? 0 : latch_bit,
 136                 value ? latch_bit : 0);
 137 }
 138
 139 static int h1940_gpiolib_latch_output(struct gpio_chip *chip,
 140                                         unsigned offset, int value)
 141 {
 142         h1940_gpiolib_latch_set(chip, offset, value);
 143         return 0;
 144 }
 145
 146 static int h1940_gpiolib_latch_get(struct gpio_chip *chip,
 147                                         unsigned offset)
 148 {
 149         return (latch_state >> (offset + 16)) & 1;
 150 }
 151
 152 struct gpio_chip h1940_latch_gpiochip = {
 153         .base                   = H1940_LATCH_GPIO(0),
 154         .owner                  = THIS_MODULE,
 155         .label                  = "H1940_LATCH",
 156         .ngpio                  = 16,
 157         .direction_output       = h1940_gpiolib_latch_output,
 158         .set                    = h1940_gpiolib_latch_set,
 159         .get                    = h1940_gpiolib_latch_get,
 160 };
 161
 162 static void h1940_udc_pullup(enum s3c2410_udc_cmd_e cmd)
 163 {
 164         printk(KERN_DEBUG "udc: pullup(%d)\n",cmd);
 165
 166         switch (cmd)
 167         {
 168                 case S3C2410_UDC_P_ENABLE :
 169                         gpio_set_value(H1940_LATCH_USB_DP, 1);
 170                         break;
 171                 case S3C2410_UDC_P_DISABLE :
 172                         gpio_set_value(H1940_LATCH_USB_DP, 0);
 173                         break;
 174                 case S3C2410_UDC_P_RESET :
 175                         break;
 176                 default:
 177                         break;
 178         }
 179 }
 180
 181 static struct s3c2410_udc_mach_info h1940_udc_cfg __initdata = {
 182         .udc_command            = h1940_udc_pullup,
 183         .vbus_pin               = S3C2410_GPG(5),
 184         .vbus_pin_inverted      = 1,
 185 };
 186
 187 static struct s3c2410_ts_mach_info h1940_ts_cfg __initdata = {
 188                 .delay = 10000,
 189                 .presc = 49,
 190                 .oversampling_shift = 2,
 191                 .cfg_gpio = s3c24xx_ts_cfg_gpio,
 192 };
 193
 194 /**
 195  * Set lcd on or off
 196  **/
 197 static struct s3c2410fb_display h1940_lcd __initdata = {
 198         .lcdcon5=       S3C2410_LCDCON5_FRM565 | \
 199                         S3C2410_LCDCON5_INVVLINE | \
 200                         S3C2410_LCDCON5_HWSWP,
 201
 202         .type =         S3C2410_LCDCON1_TFT,
 203         .width =        240,
 204         .height =       320,
 205         .pixclock =     260000,
 206         .xres =         240,
 207         .yres =         320,
 208         .bpp =          16,
 209         .left_margin =  8,
 210         .right_margin = 20,
 211         .hsync_len =    4,
 212         .upper_margin = 8,
 213         .lower_margin = 7,
 214         .vsync_len =    1,
 215 };
 216
 217 static struct s3c2410fb_mach_info h1940_fb_info __initdata = {
 218         .displays = &h1940_lcd,
 219         .num_displays = 1,
 220         .default_display = 0,
 221
 222         .lpcsel=        0x02,
 223         .gpccon=        0xaa940659,
 224         .gpccon_mask=   0xffffffff,
 225         .gpcup=         0x0000ffff,
 226         .gpcup_mask=    0xffffffff,
 227         .gpdcon=        0xaa84aaa0,
 228         .gpdcon_mask=   0xffffffff,
 229         .gpdup=         0x0000faff,
 230         .gpdup_mask=    0xffffffff,
 231 };
 232
 233 static struct platform_device h1940_device_leds = {
 234         .name             = "h1940-leds",
 235         .id               = -1,
 236 };
 237
 238 static struct platform_device h1940_device_bluetooth = {
 239         .name             = "h1940-bt",
 240         .id               = -1,
 241 };
 242
 243 static void h1940_set_mmc_power(unsigned char power_mode, unsigned short vdd)
 244 {
 245         switch (power_mode) {
 246         case MMC_POWER_OFF:
 247                 gpio_set_value(H1940_LATCH_SD_POWER, 0);
 248                 break;
 249         case MMC_POWER_UP:
 250         case MMC_POWER_ON:
 251                 gpio_set_value(H1940_LATCH_SD_POWER, 1);
 252                 break;
 253         default:
 254                 break;
 255         };
 256 }
 257
 258 static struct s3c24xx_mci_pdata h1940_mmc_cfg __initdata = {
 259         .gpio_detect   = S3C2410_GPF(5),
 260         .gpio_wprotect = S3C2410_GPH(8),
 261         .set_power     = h1940_set_mmc_power,
 262         .ocr_avail     = MMC_VDD_32_33,
 263 };
 264
 265 static int h1940_backlight_init(struct device *dev)
 266 {
 267         gpio_request(S3C2410_GPB(0), "Backlight");
 268
 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 0;
 275 }
 276
 277 static int h1940_backlight_notify(struct device *dev, int brightness)
 278 {
 279         if (!brightness) {
 280                 gpio_direction_output(S3C2410_GPB(0), 1);
 281                 gpio_set_value(H1940_LATCH_MAX1698_nSHUTDOWN, 0);
 282         } else {
 283                 gpio_direction_output(S3C2410_GPB(0), 0);
 284                 s3c_gpio_setpull(S3C2410_GPB(0), S3C_GPIO_PULL_NONE);
 285                 s3c_gpio_cfgpin(S3C2410_GPB(0), S3C2410_GPB0_TOUT0);
 286                 gpio_set_value(H1940_LATCH_MAX1698_nSHUTDOWN, 1);
 287         }
 288         return brightness;
 289 }
 290
 291 static void h1940_backlight_exit(struct device *dev)
 292 {
 293         gpio_direction_output(S3C2410_GPB(0), 1);
 294         gpio_set_value(H1940_LATCH_MAX1698_nSHUTDOWN, 0);
 295 }
 296
 297
 298 static struct platform_pwm_backlight_data backlight_data = {
 299         .pwm_id         = 0,
 300         .max_brightness = 100,
 301         .dft_brightness = 50,
 302         /* tcnt = 0x31 */
 303         .pwm_period_ns  = 36296,
 304         .init           = h1940_backlight_init,
 305         .notify         = h1940_backlight_notify,
 306         .exit           = h1940_backlight_exit,
 307 };
 308
 309 static struct platform_device h1940_backlight = {
 310         .name = "pwm-backlight",
 311         .dev  = {
 312                 .parent = &s3c_device_timer[0].dev,
 313                 .platform_data = &backlight_data,
 314         },
 315         .id   = -1,
 316 };
 317
 318 static void h1940_lcd_power_set(struct plat_lcd_data *pd,
 319                                         unsigned int power)
 320 {
 321         int value;
 322
 323         if (!power) {
 324                 gpio_set_value(S3C2410_GPC(0), 0);
 325                 /* wait for 3ac */
 326                 do {
 327                         value = gpio_get_value(S3C2410_GPC(6));
 328                 } while (value);
 329
 330                 gpio_set_value(H1940_LATCH_LCD_P2, 0);
 331                 gpio_set_value(H1940_LATCH_LCD_P3, 0);
 332                 gpio_set_value(H1940_LATCH_LCD_P4, 0);
 333
 334                 gpio_direction_output(S3C2410_GPC(1), 0);
 335                 gpio_direction_output(S3C2410_GPC(4), 0);
 336
 337                 gpio_set_value(H1940_LATCH_LCD_P1, 0);
 338                 gpio_set_value(H1940_LATCH_LCD_P0, 0);
 339
 340                 gpio_set_value(S3C2410_GPC(5), 0);
 341
 342         } else {
 343                 gpio_set_value(H1940_LATCH_LCD_P0, 1);
 344                 gpio_set_value(H1940_LATCH_LCD_P1, 1);
 345
 346                 s3c_gpio_cfgpin(S3C2410_GPC(1), S3C_GPIO_SFN(2));
 347                 s3c_gpio_cfgpin(S3C2410_GPC(4), S3C_GPIO_SFN(2));
 348
 349                 gpio_set_value(S3C2410_GPC(5), 1);
 350                 gpio_set_value(S3C2410_GPC(0), 1);
 351
 352                 gpio_set_value(H1940_LATCH_LCD_P3, 1);
 353                 gpio_set_value(H1940_LATCH_LCD_P2, 1);
 354                 gpio_set_value(H1940_LATCH_LCD_P4, 1);
 355         }
 356 }
 357
 358 static struct plat_lcd_data h1940_lcd_power_data = {
 359         .set_power      = h1940_lcd_power_set,
 360 };
 361
 362 static struct platform_device h1940_lcd_powerdev = {
 363         .name                   = "platform-lcd",
 364         .dev.parent             = &s3c_device_lcd.dev,
 365         .dev.platform_data      = &h1940_lcd_power_data,
 366 };
 367
 368 static struct platform_device *h1940_devices[] __initdata = {
 369         &s3c_device_ohci,
 370         &s3c_device_lcd,
 371         &s3c_device_wdt,
 372         &s3c_device_i2c0,
 373         &s3c_device_iis,
 374         &s3c_device_usbgadget,
 375         &h1940_device_leds,
 376         &h1940_device_bluetooth,
 377         &s3c_device_sdi,
 378         &s3c_device_rtc,
 379         &s3c_device_timer[0],
 380         &h1940_backlight,
 381         &h1940_lcd_powerdev,
 382         &s3c_device_adc,
 383         &s3c_device_ts,
 384 };
 385
 386 static void __init h1940_map_io(void)
 387 {
 388         s3c24xx_init_io(h1940_iodesc, ARRAY_SIZE(h1940_iodesc));
 389         s3c24xx_init_clocks(0);
 390         s3c24xx_init_uarts(h1940_uartcfgs, ARRAY_SIZE(h1940_uartcfgs));
 391
 392         /* setup PM */
 393
 394 #ifdef CONFIG_PM_H1940
 395         memcpy(phys_to_virt(H1940_SUSPEND_RESUMEAT), h1940_pm_return, 1024);
 396 #endif
 397         s3c_pm_init();
 398
 399         /* Add latch gpio chip, set latch initial value */
 400         h1940_latch_control(0, 0);
 401         WARN_ON(gpiochip_add(&h1940_latch_gpiochip));
 402 }
 403
 404 /* H1940 and RX3715 need to reserve this for suspend */
 405 static void __init h1940_reserve(void)
 406 {
 407         memblock_reserve(0x30003000, 0x1000);
 408         memblock_reserve(0x30081000, 0x1000);
 409 }
 410
 411 static void __init h1940_init_irq(void)
 412 {
 413         s3c24xx_init_irq();
 414 }
 415
 416 static void __init h1940_init(void)
 417 {
 418         u32 tmp;
 419
 420         s3c24xx_fb_set_platdata(&h1940_fb_info);
 421         s3c24xx_mci_set_platdata(&h1940_mmc_cfg);
 422         s3c24xx_udc_set_platdata(&h1940_udc_cfg);
 423         s3c24xx_ts_set_platdata(&h1940_ts_cfg);
 424         s3c_i2c0_set_platdata(NULL);
 425
 426         /* Turn off suspend on both USB ports, and switch the
 427          * selectable USB port to USB device mode. */
 428
 429         s3c2410_modify_misccr(S3C2410_MISCCR_USBHOST |
 430                               S3C2410_MISCCR_USBSUSPND0 |
 431                               S3C2410_MISCCR_USBSUSPND1, 0x0);
 432
 433         tmp =   (0x78 << S3C24XX_PLLCON_MDIVSHIFT)
 434               | (0x02 << S3C24XX_PLLCON_PDIVSHIFT)
 435               | (0x03 << S3C24XX_PLLCON_SDIVSHIFT);
 436         writel(tmp, S3C2410_UPLLCON);
 437
 438         gpio_request(S3C2410_GPC(0), "LCD power");
 439         gpio_request(S3C2410_GPC(1), "LCD power");
 440         gpio_request(S3C2410_GPC(4), "LCD power");
 441         gpio_request(S3C2410_GPC(5), "LCD power");
 442         gpio_request(S3C2410_GPC(6), "LCD power");
 443         gpio_request(H1940_LATCH_LCD_P0, "LCD power");
 444         gpio_request(H1940_LATCH_LCD_P1, "LCD power");
 445         gpio_request(H1940_LATCH_LCD_P2, "LCD power");
 446         gpio_request(H1940_LATCH_LCD_P3, "LCD power");
 447         gpio_request(H1940_LATCH_LCD_P4, "LCD power");
 448         gpio_request(H1940_LATCH_MAX1698_nSHUTDOWN, "LCD power");
 449         gpio_direction_output(S3C2410_GPC(0), 0);
 450         gpio_direction_output(S3C2410_GPC(1), 0);
 451         gpio_direction_output(S3C2410_GPC(4), 0);
 452         gpio_direction_output(S3C2410_GPC(5), 0);
 453         gpio_direction_input(S3C2410_GPC(6));
 454         gpio_direction_output(H1940_LATCH_LCD_P0, 0);
 455         gpio_direction_output(H1940_LATCH_LCD_P1, 0);
 456         gpio_direction_output(H1940_LATCH_LCD_P2, 0);
 457         gpio_direction_output(H1940_LATCH_LCD_P3, 0);
 458         gpio_direction_output(H1940_LATCH_LCD_P4, 0);
 459         gpio_direction_output(H1940_LATCH_MAX1698_nSHUTDOWN, 0);
 460
 461         gpio_request(H1940_LATCH_USB_DP, "USB pullup");
 462         gpio_direction_output(H1940_LATCH_USB_DP, 0);
 463
 464         gpio_request(H1940_LATCH_SD_POWER, "SD power");
 465         gpio_direction_output(H1940_LATCH_SD_POWER, 0);
 466
 467         platform_add_devices(h1940_devices, ARRAY_SIZE(h1940_devices));
 468 }
 469
 470 MACHINE_START(H1940, "IPAQ-H1940")
 471         /* Maintainer: Ben Dooks <ben-linux@fluff.org> */
 472         .phys_io        = S3C2410_PA_UART,
 473         .io_pg_offst    = (((u32)S3C24XX_VA_UART) >> 18) & 0xfffc,
 474         .boot_params    = S3C2410_SDRAM_PA + 0x100,
 475         .map_io         = h1940_map_io,
 476         .reserve        = h1940_reserve,
 477         .init_irq       = h1940_init_irq,
 478         .init_machine   = h1940_init,
 479         .timer          = &s3c24xx_timer,
 480 MACHINE_END