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/timer.h>
  19 #include <linux/init.h>
  20 #include <linux/sysdev.h>
  21 #include <linux/serial_core.h>
  22 #include <linux/platform_device.h>
  23 #include <linux/io.h>
  24 #include <linux/gpio.h>
  25 #include <linux/pwm_backlight.h>
  26 #include <video/platform_lcd.h>
  27
  28 #include <linux/mmc/host.h>
  29
  30 #include <asm/mach/arch.h>
  31 #include <asm/mach/map.h>
  32 #include <asm/mach/irq.h>
  33
  34 #include <mach/hardware.h>
  35 #include <asm/irq.h>
  36 #include <asm/mach-types.h>
  37
  38 #include <plat/regs-serial.h>
  39 #include <mach/regs-lcd.h>
  40 #include <mach/regs-clock.h>
  41
  42 #include <mach/regs-gpio.h>
  43 #include <mach/gpio-fns.h>
  44 #include <mach/gpio-nrs.h>
  45
  46 #include <mach/h1940.h>
  47 #include <mach/h1940-latch.h>
  48 #include <mach/fb.h>
  49 #include <mach/ts.h>
  50 #include <plat/udc.h>
  51 #include <plat/iic.h>
  52
  53 #include <plat/clock.h>
  54 #include <plat/devs.h>
  55 #include <plat/cpu.h>
  56 #include <plat/pll.h>
  57 #include <plat/pm.h>
  58 #include <plat/mci.h>
  59
  60 static struct map_desc h1940_iodesc[] __initdata = {
  61         [0] = {
  62                 .virtual        = (unsigned long)H1940_LATCH,
  63                 .pfn            = __phys_to_pfn(H1940_PA_LATCH),
  64                 .length         = SZ_16K,
  65                 .type           = MT_DEVICE
  66         },
  67 };
  68
  69 #define UCON S3C2410_UCON_DEFAULT | S3C2410_UCON_UCLK
  70 #define ULCON S3C2410_LCON_CS8 | S3C2410_LCON_PNONE | S3C2410_LCON_STOPB
  71 #define UFCON S3C2410_UFCON_RXTRIG8 | S3C2410_UFCON_FIFOMODE
  72
  73 static struct s3c2410_uartcfg h1940_uartcfgs[] __initdata = {
  74         [0] = {
  75                 .hwport      = 0,
  76                 .flags       = 0,
  77                 .ucon        = 0x3c5,
  78                 .ulcon       = 0x03,
  79                 .ufcon       = 0x51,
  80         },
  81         [1] = {
  82                 .hwport      = 1,
  83                 .flags       = 0,
  84                 .ucon        = 0x245,
  85                 .ulcon       = 0x03,
  86                 .ufcon       = 0x00,
  87         },
  88         /* IR port */
  89         [2] = {
  90                 .hwport      = 2,
  91                 .flags       = 0,
  92                 .uart_flags  = UPF_CONS_FLOW,
  93                 .ucon        = 0x3c5,
  94                 .ulcon       = 0x43,
  95                 .ufcon       = 0x51,
  96         }
  97 };
  98
  99 /* Board control latch control */
 100
 101 static unsigned int latch_state = H1940_LATCH_DEFAULT;
 102
 103 void h1940_latch_control(unsigned int clear, unsigned int set)
 104 {
 105         unsigned long flags;
 106
 107         local_irq_save(flags);
 108
 109         latch_state &= ~clear;
 110         latch_state |= set;
 111
 112         __raw_writel(latch_state, H1940_LATCH);
 113
 114         local_irq_restore(flags);
 115 }
 116
 117 EXPORT_SYMBOL_GPL(h1940_latch_control);
 118
 119 static void h1940_udc_pullup(enum s3c2410_udc_cmd_e cmd)
 120 {
 121         printk(KERN_DEBUG "udc: pullup(%d)\n",cmd);
 122
 123         switch (cmd)
 124         {
 125                 case S3C2410_UDC_P_ENABLE :
 126                         h1940_latch_control(0, H1940_LATCH_USB_DP);
 127                         break;
 128                 case S3C2410_UDC_P_DISABLE :
 129                         h1940_latch_control(H1940_LATCH_USB_DP, 0);
 130                         break;
 131                 case S3C2410_UDC_P_RESET :
 132                         break;
 133                 default:
 134                         break;
 135         }
 136 }
 137
 138 static struct s3c2410_udc_mach_info h1940_udc_cfg __initdata = {
 139         .udc_command            = h1940_udc_pullup,
 140         .vbus_pin               = S3C2410_GPG(5),
 141         .vbus_pin_inverted      = 1,
 142 };
 143
 144 static struct s3c2410_ts_mach_info h1940_ts_cfg __initdata = {
 145                 .delay = 10000,
 146                 .presc = 49,
 147                 .oversampling_shift = 2,
 148 };
 149
 150 /**
 151  * Set lcd on or off
 152  **/
 153 static struct s3c2410fb_display h1940_lcd __initdata = {
 154         .lcdcon5=       S3C2410_LCDCON5_FRM565 | \
 155                         S3C2410_LCDCON5_INVVLINE | \
 156                         S3C2410_LCDCON5_HWSWP,
 157
 158         .type =         S3C2410_LCDCON1_TFT,
 159         .width =        240,
 160         .height =       320,
 161         .pixclock =     260000,
 162         .xres =         240,
 163         .yres =         320,
 164         .bpp =          16,
 165         .left_margin =  20,
 166         .right_margin = 8,
 167         .hsync_len =    4,
 168         .upper_margin = 8,
 169         .lower_margin = 7,
 170         .vsync_len =    1,
 171 };
 172
 173 static struct s3c2410fb_mach_info h1940_fb_info __initdata = {
 174         .displays = &h1940_lcd,
 175         .num_displays = 1,
 176         .default_display = 0,
 177
 178         .lpcsel=        0x02,
 179         .gpccon=        0xaa940659,
 180         .gpccon_mask=   0xffffffff,
 181         .gpcup=         0x0000ffff,
 182         .gpcup_mask=    0xffffffff,
 183         .gpdcon=        0xaa84aaa0,
 184         .gpdcon_mask=   0xffffffff,
 185         .gpdup=         0x0000faff,
 186         .gpdup_mask=    0xffffffff,
 187 };
 188
 189 static struct platform_device h1940_device_leds = {
 190         .name             = "h1940-leds",
 191         .id               = -1,
 192 };
 193
 194 static struct platform_device h1940_device_bluetooth = {
 195         .name             = "h1940-bt",
 196         .id               = -1,
 197 };
 198
 199 static struct s3c24xx_mci_pdata h1940_mmc_cfg = {
 200         .gpio_detect   = S3C2410_GPF(5),
 201         .gpio_wprotect = S3C2410_GPH(8),
 202         .set_power     = NULL,
 203         .ocr_avail     = MMC_VDD_32_33,
 204 };
 205
 206 static int h1940_backlight_init(struct device *dev)
 207 {
 208         gpio_request(S3C2410_GPB(0), "Backlight");
 209
 210         s3c2410_gpio_setpin(S3C2410_GPB(0), 0);
 211         s3c2410_gpio_pullup(S3C2410_GPB(0), 0);
 212         s3c2410_gpio_cfgpin(S3C2410_GPB(0), S3C2410_GPB0_TOUT0);
 213
 214         return 0;
 215 }
 216
 217 static void h1940_backlight_exit(struct device *dev)
 218 {
 219         s3c2410_gpio_cfgpin(S3C2410_GPB(0), 1/*S3C2410_GPB0_OUTP*/);
 220 }
 221
 222 static struct platform_pwm_backlight_data backlight_data = {
 223         .pwm_id         = 0,
 224         .max_brightness = 100,
 225         .dft_brightness = 50,
 226         /* tcnt = 0x31 */
 227         .pwm_period_ns  = 36296,
 228         .init           = h1940_backlight_init,
 229         .exit           = h1940_backlight_exit,
 230 };
 231
 232 static struct platform_device h1940_backlight = {
 233         .name = "pwm-backlight",
 234         .dev  = {
 235                 .parent = &s3c_device_timer[0].dev,
 236                 .platform_data = &backlight_data,
 237         },
 238         .id   = -1,
 239 };
 240
 241 static void h1940_lcd_power_set(struct plat_lcd_data *pd,
 242                                         unsigned int power)
 243 {
 244         int value;
 245
 246         if (!power) {
 247                 /* set to 3ec */
 248                 s3c2410_gpio_setpin(S3C2410_GPC(0), 0);
 249                 /* wait for 3ac */
 250                 do {
 251                         value = s3c2410_gpio_getpin(S3C2410_GPC(6));
 252                 } while (value);
 253                 /* set to 38c */
 254                 s3c2410_gpio_setpin(S3C2410_GPC(5), 0);
 255         } else {
 256                 /* Set to 3ac */
 257                 s3c2410_gpio_setpin(S3C2410_GPC(5), 1);
 258                 /* Set to 3ad */
 259                 s3c2410_gpio_setpin(S3C2410_GPC(0), 1);
 260         }
 261 }
 262
 263 static struct plat_lcd_data h1940_lcd_power_data = {
 264         .set_power      = h1940_lcd_power_set,
 265 };
 266
 267 static struct platform_device h1940_lcd_powerdev = {
 268         .name                   = "platform-lcd",
 269         .dev.parent             = &s3c_device_lcd.dev,
 270         .dev.platform_data      = &h1940_lcd_power_data,
 271 };
 272
 273 static struct platform_device *h1940_devices[] __initdata = {
 274         &s3c_device_ts,
 275         &s3c_device_usb,
 276         &s3c_device_lcd,
 277         &s3c_device_wdt,
 278         &s3c_device_i2c0,
 279         &s3c_device_iis,
 280         &s3c_device_usbgadget,
 281         &h1940_device_leds,
 282         &h1940_device_bluetooth,
 283         &s3c_device_sdi,
 284         &s3c_device_rtc,
 285         &s3c_device_timer[0],
 286         &h1940_backlight,
 287         &h1940_lcd_powerdev,
 288 };
 289
 290 static void __init h1940_map_io(void)
 291 {
 292         s3c24xx_init_io(h1940_iodesc, ARRAY_SIZE(h1940_iodesc));
 293         s3c24xx_init_clocks(0);
 294         s3c24xx_init_uarts(h1940_uartcfgs, ARRAY_SIZE(h1940_uartcfgs));
 295
 296         /* setup PM */
 297
 298 #ifdef CONFIG_PM_H1940
 299         memcpy(phys_to_virt(H1940_SUSPEND_RESUMEAT), h1940_pm_return, 1024);
 300 #endif
 301         s3c_pm_init();
 302 }
 303
 304 static void __init h1940_init_irq(void)
 305 {
 306         s3c24xx_init_irq();
 307 }
 308
 309 static void __init h1940_init(void)
 310 {
 311         u32 tmp;
 312
 313         s3c24xx_fb_set_platdata(&h1940_fb_info);
 314         s3c24xx_udc_set_platdata(&h1940_udc_cfg);
 315         s3c24xx_ts_set_platdata(&h1940_ts_cfg);
 316         s3c_i2c0_set_platdata(NULL);
 317
 318         s3c_device_sdi.dev.platform_data = &h1940_mmc_cfg;
 319
 320         /* Turn off suspend on both USB ports, and switch the
 321          * selectable USB port to USB device mode. */
 322
 323         s3c2410_modify_misccr(S3C2410_MISCCR_USBHOST |
 324                               S3C2410_MISCCR_USBSUSPND0 |
 325                               S3C2410_MISCCR_USBSUSPND1, 0x0);
 326
 327         tmp =   (0x78 << S3C24XX_PLLCON_MDIVSHIFT)
 328               | (0x02 << S3C24XX_PLLCON_PDIVSHIFT)
 329               | (0x03 << S3C24XX_PLLCON_SDIVSHIFT);
 330         writel(tmp, S3C2410_UPLLCON);
 331
 332         gpio_request(S3C2410_GPC(0), "LCD power");
 333         gpio_request(S3C2410_GPC(5), "LCD power");
 334         gpio_request(S3C2410_GPC(6), "LCD power");
 335
 336
 337         platform_add_devices(h1940_devices, ARRAY_SIZE(h1940_devices));
 338 }
 339
 340 MACHINE_START(H1940, "IPAQ-H1940")
 341         /* Maintainer: Ben Dooks <ben@fluff.org> */
 342         .phys_io        = S3C2410_PA_UART,
 343         .io_pg_offst    = (((u32)S3C24XX_VA_UART) >> 18) & 0xfffc,
 344         .boot_params    = S3C2410_SDRAM_PA + 0x100,
 345         .map_io         = h1940_map_io,
 346         .init_irq       = h1940_init_irq,
 347         .init_machine   = h1940_init,
 348         .timer          = &s3c24xx_timer,
 349 MACHINE_END