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 = H1940_LATCH_BIT(H1940_LATCH_LCD_P4) |
 110         H1940_LATCH_BIT(H1940_LATCH_SM803_ENABLE)       |
 111         H1940_LATCH_BIT(H1940_LATCH_SDQ1)                       |
 112         H1940_LATCH_BIT(H1940_LATCH_LCD_P1)                     |
 113         H1940_LATCH_BIT(H1940_LATCH_LCD_P2)                     |
 114         H1940_LATCH_BIT(H1940_LATCH_LCD_P3)                     |
 115         H1940_LATCH_BIT(H1940_LATCH_MAX1698_nSHUTDOWN);
 116
 117 static void h1940_latch_control(unsigned int clear, unsigned int set)
 118 {
 119         unsigned long flags;
 120
 121         local_irq_save(flags);
 122
 123         latch_state &= ~clear;
 124         latch_state |= set;
 125
 126         __raw_writel(latch_state, H1940_LATCH);
 127
 128         local_irq_restore(flags);
 129 }
 130
 131 static inline int h1940_gpiolib_to_latch(int offset)
 132 {
 133         return 1 << (offset + 16);
 134 }
 135
 136 static void h1940_gpiolib_latch_set(struct gpio_chip *chip,
 137                                         unsigned offset, int value)
 138 {
 139         int latch_bit = h1940_gpiolib_to_latch(offset);
 140
 141         h1940_latch_control(value ? 0 : latch_bit,
 142                 value ? latch_bit : 0);
 143 }
 144
 145 static int h1940_gpiolib_latch_output(struct gpio_chip *chip,
 146                                         unsigned offset, int value)
 147 {
 148         h1940_gpiolib_latch_set(chip, offset, value);
 149         return 0;
 150 }
 151
 152 static int h1940_gpiolib_latch_get(struct gpio_chip *chip,
 153                                         unsigned offset)
 154 {
 155         return (latch_state >> (offset + 16)) & 1;
 156 }
 157
 158 struct gpio_chip h1940_latch_gpiochip = {
 159         .base                   = H1940_LATCH_GPIO(0),
 160         .owner                  = THIS_MODULE,
 161         .label                  = "H1940_LATCH",
 162         .ngpio                  = 16,
 163         .direction_output       = h1940_gpiolib_latch_output,
 164         .set                    = h1940_gpiolib_latch_set,
 165         .get                    = h1940_gpiolib_latch_get,
 166 };
 167
 168 static void h1940_udc_pullup(enum s3c2410_udc_cmd_e cmd)
 169 {
 170         printk(KERN_DEBUG "udc: pullup(%d)\n",cmd);
 171
 172         switch (cmd)
 173         {
 174                 case S3C2410_UDC_P_ENABLE :
 175                         gpio_set_value(H1940_LATCH_USB_DP, 1);
 176                         break;
 177                 case S3C2410_UDC_P_DISABLE :
 178                         gpio_set_value(H1940_LATCH_USB_DP, 0);
 179                         break;
 180                 case S3C2410_UDC_P_RESET :
 181                         break;
 182                 default:
 183                         break;
 184         }
 185 }
 186
 187 static struct s3c2410_udc_mach_info h1940_udc_cfg __initdata = {
 188         .udc_command            = h1940_udc_pullup,
 189         .vbus_pin               = S3C2410_GPG(5),
 190         .vbus_pin_inverted      = 1,
 191 };
 192
 193 static struct s3c2410_ts_mach_info h1940_ts_cfg __initdata = {
 194                 .delay = 10000,
 195                 .presc = 49,
 196                 .oversampling_shift = 2,
 197                 .cfg_gpio = s3c24xx_ts_cfg_gpio,
 198 };
 199
 200 /**
 201  * Set lcd on or off
 202  **/
 203 static struct s3c2410fb_display h1940_lcd __initdata = {
 204         .lcdcon5=       S3C2410_LCDCON5_FRM565 | \
 205                         S3C2410_LCDCON5_INVVLINE | \
 206                         S3C2410_LCDCON5_HWSWP,
 207
 208         .type =         S3C2410_LCDCON1_TFT,
 209         .width =        240,
 210         .height =       320,
 211         .pixclock =     260000,
 212         .xres =         240,
 213         .yres =         320,
 214         .bpp =          16,
 215         .left_margin =  8,
 216         .right_margin = 20,
 217         .hsync_len =    4,
 218         .upper_margin = 8,
 219         .lower_margin = 7,
 220         .vsync_len =    1,
 221 };
 222
 223 static struct s3c2410fb_mach_info h1940_fb_info __initdata = {
 224         .displays = &h1940_lcd,
 225         .num_displays = 1,
 226         .default_display = 0,
 227
 228         .lpcsel=        0x02,
 229         .gpccon=        0xaa940659,
 230         .gpccon_mask=   0xffffffff,
 231         .gpcup=         0x0000ffff,
 232         .gpcup_mask=    0xffffffff,
 233         .gpdcon=        0xaa84aaa0,
 234         .gpdcon_mask=   0xffffffff,
 235         .gpdup=         0x0000faff,
 236         .gpdup_mask=    0xffffffff,
 237 };
 238
 239 static struct platform_device h1940_device_leds = {
 240         .name             = "h1940-leds",
 241         .id               = -1,
 242 };
 243
 244 static struct platform_device h1940_device_bluetooth = {
 245         .name             = "h1940-bt",
 246         .id               = -1,
 247 };
 248
 249 static void h1940_set_mmc_power(unsigned char power_mode, unsigned short vdd)
 250 {
 251         switch (power_mode) {
 252         case MMC_POWER_OFF:
 253                 gpio_set_value(H1940_LATCH_SD_POWER, 0);
 254                 break;
 255         case MMC_POWER_UP:
 256         case MMC_POWER_ON:
 257                 gpio_set_value(H1940_LATCH_SD_POWER, 1);
 258                 break;
 259         default:
 260                 break;
 261         };
 262 }
 263
 264 static struct s3c24xx_mci_pdata h1940_mmc_cfg __initdata = {
 265         .gpio_detect   = S3C2410_GPF(5),
 266         .gpio_wprotect = S3C2410_GPH(8),
 267         .set_power     = h1940_set_mmc_power,
 268         .ocr_avail     = MMC_VDD_32_33,
 269 };
 270
 271 static int h1940_backlight_init(struct device *dev)
 272 {
 273         gpio_request(S3C2410_GPB(0), "Backlight");
 274
 275         gpio_direction_output(S3C2410_GPB(0), 0);
 276         s3c_gpio_setpull(S3C2410_GPB(0), S3C_GPIO_PULL_NONE);
 277         s3c_gpio_cfgpin(S3C2410_GPB(0), S3C2410_GPB0_TOUT0);
 278
 279         return 0;
 280 }
 281
 282 static void h1940_backlight_exit(struct device *dev)
 283 {
 284         gpio_direction_output(S3C2410_GPB(0), 1);
 285 }
 286
 287 static struct platform_pwm_backlight_data backlight_data = {
 288         .pwm_id         = 0,
 289         .max_brightness = 100,
 290         .dft_brightness = 50,
 291         /* tcnt = 0x31 */
 292         .pwm_period_ns  = 36296,
 293         .init           = h1940_backlight_init,
 294         .exit           = h1940_backlight_exit,
 295 };
 296
 297 static struct platform_device h1940_backlight = {
 298         .name = "pwm-backlight",
 299         .dev  = {
 300                 .parent = &s3c_device_timer[0].dev,
 301                 .platform_data = &backlight_data,
 302         },
 303         .id   = -1,
 304 };
 305
 306 static void h1940_lcd_power_set(struct plat_lcd_data *pd,
 307                                         unsigned int power)
 308 {
 309         int value;
 310
 311         if (!power) {
 312                 /* set to 3ec */
 313                 gpio_direction_output(S3C2410_GPC(0), 0);
 314                 /* wait for 3ac */
 315                 do {
 316                         value = gpio_get_value(S3C2410_GPC(6));
 317                 } while (value);
 318                 /* set to 38c */
 319                 gpio_direction_output(S3C2410_GPC(5), 0);
 320         } else {
 321                 /* Set to 3ac */
 322                 gpio_direction_output(S3C2410_GPC(5), 1);
 323                 /* Set to 3ad */
 324                 gpio_direction_output(S3C2410_GPC(0), 1);
 325         }
 326 }
 327
 328 static struct plat_lcd_data h1940_lcd_power_data = {
 329         .set_power      = h1940_lcd_power_set,
 330 };
 331
 332 static struct platform_device h1940_lcd_powerdev = {
 333         .name                   = "platform-lcd",
 334         .dev.parent             = &s3c_device_lcd.dev,
 335         .dev.platform_data      = &h1940_lcd_power_data,
 336 };
 337
 338 static struct platform_device *h1940_devices[] __initdata = {
 339         &s3c_device_ohci,
 340         &s3c_device_lcd,
 341         &s3c_device_wdt,
 342         &s3c_device_i2c0,
 343         &s3c_device_iis,
 344         &s3c_device_usbgadget,
 345         &h1940_device_leds,
 346         &h1940_device_bluetooth,
 347         &s3c_device_sdi,
 348         &s3c_device_rtc,
 349         &s3c_device_timer[0],
 350         &h1940_backlight,
 351         &h1940_lcd_powerdev,
 352         &s3c_device_adc,
 353         &s3c_device_ts,
 354 };
 355
 356 static void __init h1940_map_io(void)
 357 {
 358         s3c24xx_init_io(h1940_iodesc, ARRAY_SIZE(h1940_iodesc));
 359         s3c24xx_init_clocks(0);
 360         s3c24xx_init_uarts(h1940_uartcfgs, ARRAY_SIZE(h1940_uartcfgs));
 361
 362         /* setup PM */
 363
 364 #ifdef CONFIG_PM_H1940
 365         memcpy(phys_to_virt(H1940_SUSPEND_RESUMEAT), h1940_pm_return, 1024);
 366 #endif
 367         s3c_pm_init();
 368
 369         WARN_ON(gpiochip_add(&h1940_latch_gpiochip));
 370 }
 371
 372 /* H1940 and RX3715 need to reserve this for suspend */
 373 static void __init h1940_reserve(void)
 374 {
 375         memblock_reserve(0x30003000, 0x1000);
 376         memblock_reserve(0x30081000, 0x1000);
 377 }
 378
 379 static void __init h1940_init_irq(void)
 380 {
 381         s3c24xx_init_irq();
 382 }
 383
 384 static void __init h1940_init(void)
 385 {
 386         u32 tmp;
 387
 388         s3c24xx_fb_set_platdata(&h1940_fb_info);
 389         s3c24xx_mci_set_platdata(&h1940_mmc_cfg);
 390         s3c24xx_udc_set_platdata(&h1940_udc_cfg);
 391         s3c24xx_ts_set_platdata(&h1940_ts_cfg);
 392         s3c_i2c0_set_platdata(NULL);
 393
 394         /* Turn off suspend on both USB ports, and switch the
 395          * selectable USB port to USB device mode. */
 396
 397         s3c2410_modify_misccr(S3C2410_MISCCR_USBHOST |
 398                               S3C2410_MISCCR_USBSUSPND0 |
 399                               S3C2410_MISCCR_USBSUSPND1, 0x0);
 400
 401         tmp =   (0x78 << S3C24XX_PLLCON_MDIVSHIFT)
 402               | (0x02 << S3C24XX_PLLCON_PDIVSHIFT)
 403               | (0x03 << S3C24XX_PLLCON_SDIVSHIFT);
 404         writel(tmp, S3C2410_UPLLCON);
 405
 406         gpio_request(S3C2410_GPC(0), "LCD power");
 407         gpio_request(S3C2410_GPC(5), "LCD power");
 408         gpio_request(S3C2410_GPC(6), "LCD power");
 409         gpio_direction_input(S3C2410_GPC(6));
 410
 411         gpio_request(H1940_LATCH_USB_DP, "USB pullup");
 412         gpio_direction_output(H1940_LATCH_USB_DP, 0);
 413
 414         gpio_request(H1940_LATCH_SD_POWER, "SD power");
 415         gpio_direction_output(H1940_LATCH_SD_POWER, 0);
 416
 417         platform_add_devices(h1940_devices, ARRAY_SIZE(h1940_devices));
 418 }
 419
 420 MACHINE_START(H1940, "IPAQ-H1940")
 421         /* Maintainer: Ben Dooks <ben-linux@fluff.org> */
 422         .phys_io        = S3C2410_PA_UART,
 423         .io_pg_offst    = (((u32)S3C24XX_VA_UART) >> 18) & 0xfffc,
 424         .boot_params    = S3C2410_SDRAM_PA + 0x100,
 425         .map_io         = h1940_map_io,
 426         .reserve        = h1940_reserve,
 427         .init_irq       = h1940_init_irq,
 428         .init_machine   = h1940_init,
 429         .timer          = &s3c24xx_timer,
 430 MACHINE_END