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 <linux/i2c.h>
  28 #include <video/platform_lcd.h>
  29
  30 #include <linux/mmc/host.h>
  31
  32 #include <asm/mach/arch.h>
  33 #include <asm/mach/map.h>
  34 #include <asm/mach/irq.h>
  35
  36 #include <mach/hardware.h>
  37 #include <asm/irq.h>
  38 #include <asm/mach-types.h>
  39
  40 #include <plat/regs-serial.h>
  41 #include <mach/regs-lcd.h>
  42 #include <mach/regs-clock.h>
  43
  44 #include <mach/regs-gpio.h>
  45 #include <mach/gpio-fns.h>
  46 #include <mach/gpio-nrs.h>
  47
  48 #include <mach/h1940.h>
  49 #include <mach/h1940-latch.h>
  50 #include <mach/fb.h>
  51 #include <plat/udc.h>
  52 #include <plat/iic.h>
  53
  54 #include <plat/gpio-cfg.h>
  55 #include <plat/clock.h>
  56 #include <plat/devs.h>
  57 #include <plat/cpu.h>
  58 #include <plat/pll.h>
  59 #include <plat/pm.h>
  60 #include <plat/mci.h>
  61 #include <plat/ts.h>
  62
  63 #include <sound/uda1380.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 static struct map_desc h1940_iodesc[] __initdata = {
  72         [0] = {
  73                 .virtual        = (unsigned long)H1940_LATCH,
  74                 .pfn            = __phys_to_pfn(H1940_PA_LATCH),
  75                 .length         = SZ_16K,
  76                 .type           = MT_DEVICE
  77         },
  78 };
  79
  80 #define UCON S3C2410_UCON_DEFAULT | S3C2410_UCON_UCLK
  81 #define ULCON S3C2410_LCON_CS8 | S3C2410_LCON_PNONE | S3C2410_LCON_STOPB
  82 #define UFCON S3C2410_UFCON_RXTRIG8 | S3C2410_UFCON_FIFOMODE
  83
  84 static struct s3c2410_uartcfg h1940_uartcfgs[] __initdata = {
  85         [0] = {
  86                 .hwport      = 0,
  87                 .flags       = 0,
  88                 .ucon        = 0x3c5,
  89                 .ulcon       = 0x03,
  90                 .ufcon       = 0x51,
  91         },
  92         [1] = {
  93                 .hwport      = 1,
  94                 .flags       = 0,
  95                 .ucon        = 0x245,
  96                 .ulcon       = 0x03,
  97                 .ufcon       = 0x00,
  98         },
  99         /* IR port */
 100         [2] = {
 101                 .hwport      = 2,
 102                 .flags       = 0,
 103                 .uart_flags  = UPF_CONS_FLOW,
 104                 .ucon        = 0x3c5,
 105                 .ulcon       = 0x43,
 106                 .ufcon       = 0x51,
 107         }
 108 };
 109
 110 /* Board control latch control */
 111
 112 static unsigned int latch_state;
 113
 114 static void h1940_latch_control(unsigned int clear, unsigned int set)
 115 {
 116         unsigned long flags;
 117
 118         local_irq_save(flags);
 119
 120         latch_state &= ~clear;
 121         latch_state |= set;
 122
 123         __raw_writel(latch_state, H1940_LATCH);
 124
 125         local_irq_restore(flags);
 126 }
 127
 128 static inline int h1940_gpiolib_to_latch(int offset)
 129 {
 130         return 1 << (offset + 16);
 131 }
 132
 133 static void h1940_gpiolib_latch_set(struct gpio_chip *chip,
 134                                         unsigned offset, int value)
 135 {
 136         int latch_bit = h1940_gpiolib_to_latch(offset);
 137
 138         h1940_latch_control(value ? 0 : latch_bit,
 139                 value ? latch_bit : 0);
 140 }
 141
 142 static int h1940_gpiolib_latch_output(struct gpio_chip *chip,
 143                                         unsigned offset, int value)
 144 {
 145         h1940_gpiolib_latch_set(chip, offset, value);
 146         return 0;
 147 }
 148
 149 static int h1940_gpiolib_latch_get(struct gpio_chip *chip,
 150                                         unsigned offset)
 151 {
 152         return (latch_state >> (offset + 16)) & 1;
 153 }
 154
 155 struct gpio_chip h1940_latch_gpiochip = {
 156         .base                   = H1940_LATCH_GPIO(0),
 157         .owner                  = THIS_MODULE,
 158         .label                  = "H1940_LATCH",
 159         .ngpio                  = 16,
 160         .direction_output       = h1940_gpiolib_latch_output,
 161         .set                    = h1940_gpiolib_latch_set,
 162         .get                    = h1940_gpiolib_latch_get,
 163 };
 164
 165 static void h1940_udc_pullup(enum s3c2410_udc_cmd_e cmd)
 166 {
 167         printk(KERN_DEBUG "udc: pullup(%d)\n",cmd);
 168
 169         switch (cmd)
 170         {
 171                 case S3C2410_UDC_P_ENABLE :
 172                         gpio_set_value(H1940_LATCH_USB_DP, 1);
 173                         break;
 174                 case S3C2410_UDC_P_DISABLE :
 175                         gpio_set_value(H1940_LATCH_USB_DP, 0);
 176                         break;
 177                 case S3C2410_UDC_P_RESET :
 178                         break;
 179                 default:
 180                         break;
 181         }
 182 }
 183
 184 static struct s3c2410_udc_mach_info h1940_udc_cfg __initdata = {
 185         .udc_command            = h1940_udc_pullup,
 186         .vbus_pin               = S3C2410_GPG(5),
 187         .vbus_pin_inverted      = 1,
 188 };
 189
 190 static struct s3c2410_ts_mach_info h1940_ts_cfg __initdata = {
 191                 .delay = 10000,
 192                 .presc = 49,
 193                 .oversampling_shift = 2,
 194                 .cfg_gpio = s3c24xx_ts_cfg_gpio,
 195 };
 196
 197 /**
 198  * Set lcd on or off
 199  **/
 200 static struct s3c2410fb_display h1940_lcd __initdata = {
 201         .lcdcon5=       S3C2410_LCDCON5_FRM565 | \
 202                         S3C2410_LCDCON5_INVVLINE | \
 203                         S3C2410_LCDCON5_HWSWP,
 204
 205         .type =         S3C2410_LCDCON1_TFT,
 206         .width =        240,
 207         .height =       320,
 208         .pixclock =     260000,
 209         .xres =         240,
 210         .yres =         320,
 211         .bpp =          16,
 212         .left_margin =  8,
 213         .right_margin = 20,
 214         .hsync_len =    4,
 215         .upper_margin = 8,
 216         .lower_margin = 7,
 217         .vsync_len =    1,
 218 };
 219
 220 static struct s3c2410fb_mach_info h1940_fb_info __initdata = {
 221         .displays = &h1940_lcd,
 222         .num_displays = 1,
 223         .default_display = 0,
 224
 225         .lpcsel=        0x02,
 226         .gpccon=        0xaa940659,
 227         .gpccon_mask=   0xffffffff,
 228         .gpcup=         0x0000ffff,
 229         .gpcup_mask=    0xffffffff,
 230         .gpdcon=        0xaa84aaa0,
 231         .gpdcon_mask=   0xffffffff,
 232         .gpdup=         0x0000faff,
 233         .gpdup_mask=    0xffffffff,
 234 };
 235
 236 static struct platform_device h1940_device_leds = {
 237         .name             = "h1940-leds",
 238         .id               = -1,
 239 };
 240
 241 static struct platform_device h1940_device_bluetooth = {
 242         .name             = "h1940-bt",
 243         .id               = -1,
 244 };
 245
 246 static void h1940_set_mmc_power(unsigned char power_mode, unsigned short vdd)
 247 {
 248         switch (power_mode) {
 249         case MMC_POWER_OFF:
 250                 gpio_set_value(H1940_LATCH_SD_POWER, 0);
 251                 break;
 252         case MMC_POWER_UP:
 253         case MMC_POWER_ON:
 254                 gpio_set_value(H1940_LATCH_SD_POWER, 1);
 255                 break;
 256         default:
 257                 break;
 258         };
 259 }
 260
 261 static struct s3c24xx_mci_pdata h1940_mmc_cfg __initdata = {
 262         .gpio_detect   = S3C2410_GPF(5),
 263         .gpio_wprotect = S3C2410_GPH(8),
 264         .set_power     = h1940_set_mmc_power,
 265         .ocr_avail     = MMC_VDD_32_33,
 266 };
 267
 268 static int h1940_backlight_init(struct device *dev)
 269 {
 270         gpio_request(S3C2410_GPB(0), "Backlight");
 271
 272         gpio_direction_output(S3C2410_GPB(0), 0);
 273         s3c_gpio_setpull(S3C2410_GPB(0), S3C_GPIO_PULL_NONE);
 274         s3c_gpio_cfgpin(S3C2410_GPB(0), S3C2410_GPB0_TOUT0);
 275         gpio_set_value(H1940_LATCH_MAX1698_nSHUTDOWN, 1);
 276
 277         return 0;
 278 }
 279
 280 static int h1940_backlight_notify(struct device *dev, int brightness)
 281 {
 282         if (!brightness) {
 283                 gpio_direction_output(S3C2410_GPB(0), 1);
 284                 gpio_set_value(H1940_LATCH_MAX1698_nSHUTDOWN, 0);
 285         } else {
 286                 gpio_direction_output(S3C2410_GPB(0), 0);
 287                 s3c_gpio_setpull(S3C2410_GPB(0), S3C_GPIO_PULL_NONE);
 288                 s3c_gpio_cfgpin(S3C2410_GPB(0), S3C2410_GPB0_TOUT0);
 289                 gpio_set_value(H1940_LATCH_MAX1698_nSHUTDOWN, 1);
 290         }
 291         return brightness;
 292 }
 293
 294 static void h1940_backlight_exit(struct device *dev)
 295 {
 296         gpio_direction_output(S3C2410_GPB(0), 1);
 297         gpio_set_value(H1940_LATCH_MAX1698_nSHUTDOWN, 0);
 298 }
 299
 300
 301 static struct platform_pwm_backlight_data backlight_data = {
 302         .pwm_id         = 0,
 303         .max_brightness = 100,
 304         .dft_brightness = 50,
 305         /* tcnt = 0x31 */
 306         .pwm_period_ns  = 36296,
 307         .init           = h1940_backlight_init,
 308         .notify         = h1940_backlight_notify,
 309         .exit           = h1940_backlight_exit,
 310 };
 311
 312 static struct platform_device h1940_backlight = {
 313         .name = "pwm-backlight",
 314         .dev  = {
 315                 .parent = &s3c_device_timer[0].dev,
 316                 .platform_data = &backlight_data,
 317         },
 318         .id   = -1,
 319 };
 320
 321 static void h1940_lcd_power_set(struct plat_lcd_data *pd,
 322                                         unsigned int power)
 323 {
 324         int value;
 325
 326         if (!power) {
 327                 gpio_set_value(S3C2410_GPC(0), 0);
 328                 /* wait for 3ac */
 329                 do {
 330                         value = gpio_get_value(S3C2410_GPC(6));
 331                 } while (value);
 332
 333                 gpio_set_value(H1940_LATCH_LCD_P2, 0);
 334                 gpio_set_value(H1940_LATCH_LCD_P3, 0);
 335                 gpio_set_value(H1940_LATCH_LCD_P4, 0);
 336
 337                 gpio_direction_output(S3C2410_GPC(1), 0);
 338                 gpio_direction_output(S3C2410_GPC(4), 0);
 339
 340                 gpio_set_value(H1940_LATCH_LCD_P1, 0);
 341                 gpio_set_value(H1940_LATCH_LCD_P0, 0);
 342
 343                 gpio_set_value(S3C2410_GPC(5), 0);
 344
 345         } else {
 346                 gpio_set_value(H1940_LATCH_LCD_P0, 1);
 347                 gpio_set_value(H1940_LATCH_LCD_P1, 1);
 348
 349                 s3c_gpio_cfgpin(S3C2410_GPC(1), S3C_GPIO_SFN(2));
 350                 s3c_gpio_cfgpin(S3C2410_GPC(4), S3C_GPIO_SFN(2));
 351
 352                 gpio_set_value(S3C2410_GPC(5), 1);
 353                 gpio_set_value(S3C2410_GPC(0), 1);
 354
 355                 gpio_set_value(H1940_LATCH_LCD_P3, 1);
 356                 gpio_set_value(H1940_LATCH_LCD_P2, 1);
 357                 gpio_set_value(H1940_LATCH_LCD_P4, 1);
 358         }
 359 }
 360
 361 static struct plat_lcd_data h1940_lcd_power_data = {
 362         .set_power      = h1940_lcd_power_set,
 363 };
 364
 365 static struct platform_device h1940_lcd_powerdev = {
 366         .name                   = "platform-lcd",
 367         .dev.parent             = &s3c_device_lcd.dev,
 368         .dev.platform_data      = &h1940_lcd_power_data,
 369 };
 370
 371 static struct uda1380_platform_data uda1380_info = {
 372         .gpio_power     = H1940_LATCH_UDA_POWER,
 373         .gpio_reset     = S3C2410_GPA(12),
 374         .dac_clk        = UDA1380_DAC_CLK_SYSCLK,
 375 };
 376
 377 static struct i2c_board_info h1940_i2c_devices[] = {
 378         {
 379                 I2C_BOARD_INFO("uda1380", 0x1a),
 380                 .platform_data = &uda1380_info,
 381         },
 382 };
 383
 384 static struct platform_device *h1940_devices[] __initdata = {
 385         &s3c_device_ohci,
 386         &s3c_device_lcd,
 387         &s3c_device_wdt,
 388         &s3c_device_i2c0,
 389         &s3c_device_iis,
 390         &s3c_device_pcm,
 391         &s3c_device_usbgadget,
 392         &h1940_device_leds,
 393         &h1940_device_bluetooth,
 394         &s3c_device_sdi,
 395         &s3c_device_rtc,
 396         &s3c_device_timer[0],
 397         &h1940_backlight,
 398         &h1940_lcd_powerdev,
 399         &s3c_device_adc,
 400         &s3c_device_ts,
 401 };
 402
 403 static void __init h1940_map_io(void)
 404 {
 405         s3c24xx_init_io(h1940_iodesc, ARRAY_SIZE(h1940_iodesc));
 406         s3c24xx_init_clocks(0);
 407         s3c24xx_init_uarts(h1940_uartcfgs, ARRAY_SIZE(h1940_uartcfgs));
 408
 409         /* setup PM */
 410
 411 #ifdef CONFIG_PM_H1940
 412         memcpy(phys_to_virt(H1940_SUSPEND_RESUMEAT), h1940_pm_return, 1024);
 413 #endif
 414         s3c_pm_init();
 415
 416         /* Add latch gpio chip, set latch initial value */
 417         h1940_latch_control(0, 0);
 418         WARN_ON(gpiochip_add(&h1940_latch_gpiochip));
 419 }
 420
 421 /* H1940 and RX3715 need to reserve this for suspend */
 422 static void __init h1940_reserve(void)
 423 {
 424         memblock_reserve(0x30003000, 0x1000);
 425         memblock_reserve(0x30081000, 0x1000);
 426 }
 427
 428 static void __init h1940_init_irq(void)
 429 {
 430         s3c24xx_init_irq();
 431 }
 432
 433 static void __init h1940_init(void)
 434 {
 435         u32 tmp;
 436
 437         s3c24xx_fb_set_platdata(&h1940_fb_info);
 438         s3c24xx_mci_set_platdata(&h1940_mmc_cfg);
 439         s3c24xx_udc_set_platdata(&h1940_udc_cfg);
 440         s3c24xx_ts_set_platdata(&h1940_ts_cfg);
 441         s3c_i2c0_set_platdata(NULL);
 442
 443         /* Turn off suspend on both USB ports, and switch the
 444          * selectable USB port to USB device mode. */
 445
 446         s3c2410_modify_misccr(S3C2410_MISCCR_USBHOST |
 447                               S3C2410_MISCCR_USBSUSPND0 |
 448                               S3C2410_MISCCR_USBSUSPND1, 0x0);
 449
 450         tmp =   (0x78 << S3C24XX_PLLCON_MDIVSHIFT)
 451               | (0x02 << S3C24XX_PLLCON_PDIVSHIFT)
 452               | (0x03 << S3C24XX_PLLCON_SDIVSHIFT);
 453         writel(tmp, S3C2410_UPLLCON);
 454
 455         gpio_request(S3C2410_GPC(0), "LCD power");
 456         gpio_request(S3C2410_GPC(1), "LCD power");
 457         gpio_request(S3C2410_GPC(4), "LCD power");
 458         gpio_request(S3C2410_GPC(5), "LCD power");
 459         gpio_request(S3C2410_GPC(6), "LCD power");
 460         gpio_request(H1940_LATCH_LCD_P0, "LCD power");
 461         gpio_request(H1940_LATCH_LCD_P1, "LCD power");
 462         gpio_request(H1940_LATCH_LCD_P2, "LCD power");
 463         gpio_request(H1940_LATCH_LCD_P3, "LCD power");
 464         gpio_request(H1940_LATCH_LCD_P4, "LCD power");
 465         gpio_request(H1940_LATCH_MAX1698_nSHUTDOWN, "LCD power");
 466         gpio_direction_output(S3C2410_GPC(0), 0);
 467         gpio_direction_output(S3C2410_GPC(1), 0);
 468         gpio_direction_output(S3C2410_GPC(4), 0);
 469         gpio_direction_output(S3C2410_GPC(5), 0);
 470         gpio_direction_input(S3C2410_GPC(6));
 471         gpio_direction_output(H1940_LATCH_LCD_P0, 0);
 472         gpio_direction_output(H1940_LATCH_LCD_P1, 0);
 473         gpio_direction_output(H1940_LATCH_LCD_P2, 0);
 474         gpio_direction_output(H1940_LATCH_LCD_P3, 0);
 475         gpio_direction_output(H1940_LATCH_LCD_P4, 0);
 476         gpio_direction_output(H1940_LATCH_MAX1698_nSHUTDOWN, 0);
 477
 478         gpio_request(H1940_LATCH_USB_DP, "USB pullup");
 479         gpio_direction_output(H1940_LATCH_USB_DP, 0);
 480
 481         gpio_request(H1940_LATCH_SD_POWER, "SD power");
 482         gpio_direction_output(H1940_LATCH_SD_POWER, 0);
 483
 484         platform_add_devices(h1940_devices, ARRAY_SIZE(h1940_devices));
 485
 486         i2c_register_board_info(0, h1940_i2c_devices,
 487                 ARRAY_SIZE(h1940_i2c_devices));
 488 }
 489
 490 MACHINE_START(H1940, "IPAQ-H1940")
 491         /* Maintainer: Ben Dooks <ben-linux@fluff.org> */
 492         .boot_params    = S3C2410_SDRAM_PA + 0x100,
 493         .map_io         = h1940_map_io,
 494         .reserve        = h1940_reserve,
 495         .init_irq       = h1940_init_irq,
 496         .init_machine   = h1940_init,
 497         .timer          = &s3c24xx_timer,
 498 MACHINE_END