release/src-rt-6.x.4708/linux/linux-2.6.36/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 static struct map_desc h1940_iodesc[] __initdata = {
  63         [0] = {
  64                 .virtual        = (unsigned long)H1940_LATCH,
  65                 .pfn            = __phys_to_pfn(H1940_PA_LATCH),
  66                 .length         = SZ_16K,
  67                 .type           = MT_DEVICE
  68         },
  69 };
  70
  71 #define UCON S3C2410_UCON_DEFAULT | S3C2410_UCON_UCLK
  72 #define ULCON S3C2410_LCON_CS8 | S3C2410_LCON_PNONE | S3C2410_LCON_STOPB
  73 #define UFCON S3C2410_UFCON_RXTRIG8 | S3C2410_UFCON_FIFOMODE
  74
  75 static struct s3c2410_uartcfg h1940_uartcfgs[] __initdata = {
  76         [0] = {
  77                 .hwport      = 0,
  78                 .flags       = 0,
  79                 .ucon        = 0x3c5,
  80                 .ulcon       = 0x03,
  81                 .ufcon       = 0x51,
  82         },
  83         [1] = {
  84                 .hwport      = 1,
  85                 .flags       = 0,
  86                 .ucon        = 0x245,
  87                 .ulcon       = 0x03,
  88                 .ufcon       = 0x00,
  89         },
  90         /* IR port */
  91         [2] = {
  92                 .hwport      = 2,
  93                 .flags       = 0,
  94                 .uart_flags  = UPF_CONS_FLOW,
  95                 .ucon        = 0x3c5,
  96                 .ulcon       = 0x43,
  97                 .ufcon       = 0x51,
  98         }
  99 };
 100
 101 /* Board control latch control */
 102
 103 static unsigned int latch_state = H1940_LATCH_DEFAULT;
 104
 105 void h1940_latch_control(unsigned int clear, unsigned int set)
 106 {
 107         unsigned long flags;
 108
 109         local_irq_save(flags);
 110
 111         latch_state &= ~clear;
 112         latch_state |= set;
 113
 114         __raw_writel(latch_state, H1940_LATCH);
 115
 116         local_irq_restore(flags);
 117 }
 118
 119 EXPORT_SYMBOL_GPL(h1940_latch_control);
 120
 121 static void h1940_udc_pullup(enum s3c2410_udc_cmd_e cmd)
 122 {
 123         printk(KERN_DEBUG "udc: pullup(%d)\n",cmd);
 124
 125         switch (cmd)
 126         {
 127                 case S3C2410_UDC_P_ENABLE :
 128                         h1940_latch_control(0, H1940_LATCH_USB_DP);
 129                         break;
 130                 case S3C2410_UDC_P_DISABLE :
 131                         h1940_latch_control(H1940_LATCH_USB_DP, 0);
 132                         break;
 133                 case S3C2410_UDC_P_RESET :
 134                         break;
 135                 default:
 136                         break;
 137         }
 138 }
 139
 140 static struct s3c2410_udc_mach_info h1940_udc_cfg __initdata = {
 141         .udc_command            = h1940_udc_pullup,
 142         .vbus_pin               = S3C2410_GPG(5),
 143         .vbus_pin_inverted      = 1,
 144 };
 145
 146 static struct s3c2410_ts_mach_info h1940_ts_cfg __initdata = {
 147                 .delay = 10000,
 148                 .presc = 49,
 149                 .oversampling_shift = 2,
 150                 .cfg_gpio = s3c24xx_ts_cfg_gpio,
 151 };
 152
 153 /**
 154  * Set lcd on or off
 155  **/
 156 static struct s3c2410fb_display h1940_lcd __initdata = {
 157         .lcdcon5=       S3C2410_LCDCON5_FRM565 | \
 158                         S3C2410_LCDCON5_INVVLINE | \
 159                         S3C2410_LCDCON5_HWSWP,
 160
 161         .type =         S3C2410_LCDCON1_TFT,
 162         .width =        240,
 163         .height =       320,
 164         .pixclock =     260000,
 165         .xres =         240,
 166         .yres =         320,
 167         .bpp =          16,
 168         .left_margin =  8,
 169         .right_margin = 20,
 170         .hsync_len =    4,
 171         .upper_margin = 8,
 172         .lower_margin = 7,
 173         .vsync_len =    1,
 174 };
 175
 176 static struct s3c2410fb_mach_info h1940_fb_info __initdata = {
 177         .displays = &h1940_lcd,
 178         .num_displays = 1,
 179         .default_display = 0,
 180
 181         .lpcsel=        0x02,
 182         .gpccon=        0xaa940659,
 183         .gpccon_mask=   0xffffffff,
 184         .gpcup=         0x0000ffff,
 185         .gpcup_mask=    0xffffffff,
 186         .gpdcon=        0xaa84aaa0,
 187         .gpdcon_mask=   0xffffffff,
 188         .gpdup=         0x0000faff,
 189         .gpdup_mask=    0xffffffff,
 190 };
 191
 192 static struct platform_device h1940_device_leds = {
 193         .name             = "h1940-leds",
 194         .id               = -1,
 195 };
 196
 197 static struct platform_device h1940_device_bluetooth = {
 198         .name             = "h1940-bt",
 199         .id               = -1,
 200 };
 201
 202 static struct s3c24xx_mci_pdata h1940_mmc_cfg __initdata = {
 203         .gpio_detect   = S3C2410_GPF(5),
 204         .gpio_wprotect = S3C2410_GPH(8),
 205         .set_power     = NULL,
 206         .ocr_avail     = MMC_VDD_32_33,
 207 };
 208
 209 static int h1940_backlight_init(struct device *dev)
 210 {
 211         gpio_request(S3C2410_GPB(0), "Backlight");
 212
 213         gpio_direction_output(S3C2410_GPB(0), 0);
 214         s3c_gpio_setpull(S3C2410_GPB(0), S3C_GPIO_PULL_NONE);
 215         s3c_gpio_cfgpin(S3C2410_GPB(0), S3C2410_GPB0_TOUT0);
 216
 217         return 0;
 218 }
 219
 220 static void h1940_backlight_exit(struct device *dev)
 221 {
 222         gpio_direction_output(S3C2410_GPB(0), 1);
 223 }
 224
 225 static struct platform_pwm_backlight_data backlight_data = {
 226         .pwm_id         = 0,
 227         .max_brightness = 100,
 228         .dft_brightness = 50,
 229         /* tcnt = 0x31 */
 230         .pwm_period_ns  = 36296,
 231         .init           = h1940_backlight_init,
 232         .exit           = h1940_backlight_exit,
 233 };
 234
 235 static struct platform_device h1940_backlight = {
 236         .name = "pwm-backlight",
 237         .dev  = {
 238                 .parent = &s3c_device_timer[0].dev,
 239                 .platform_data = &backlight_data,
 240         },
 241         .id   = -1,
 242 };
 243
 244 static void h1940_lcd_power_set(struct plat_lcd_data *pd,
 245                                         unsigned int power)
 246 {
 247         int value;
 248
 249         if (!power) {
 250                 /* set to 3ec */
 251                 gpio_direction_output(S3C2410_GPC(0), 0);
 252                 /* wait for 3ac */
 253                 do {
 254                         value = gpio_get_value(S3C2410_GPC(6));
 255                 } while (value);
 256                 /* set to 38c */
 257                 gpio_direction_output(S3C2410_GPC(5), 0);
 258         } else {
 259                 /* Set to 3ac */
 260                 gpio_direction_output(S3C2410_GPC(5), 1);
 261                 /* Set to 3ad */
 262                 gpio_direction_output(S3C2410_GPC(0), 1);
 263         }
 264 }
 265
 266 static struct plat_lcd_data h1940_lcd_power_data = {
 267         .set_power      = h1940_lcd_power_set,
 268 };
 269
 270 static struct platform_device h1940_lcd_powerdev = {
 271         .name                   = "platform-lcd",
 272         .dev.parent             = &s3c_device_lcd.dev,
 273         .dev.platform_data      = &h1940_lcd_power_data,
 274 };
 275
 276 static struct platform_device *h1940_devices[] __initdata = {
 277         &s3c_device_ohci,
 278         &s3c_device_lcd,
 279         &s3c_device_wdt,
 280         &s3c_device_i2c0,
 281         &s3c_device_iis,
 282         &s3c_device_usbgadget,
 283         &h1940_device_leds,
 284         &h1940_device_bluetooth,
 285         &s3c_device_sdi,
 286         &s3c_device_rtc,
 287         &s3c_device_timer[0],
 288         &h1940_backlight,
 289         &h1940_lcd_powerdev,
 290         &s3c_device_adc,
 291         &s3c_device_ts,
 292 };
 293
 294 static void __init h1940_map_io(void)
 295 {
 296         s3c24xx_init_io(h1940_iodesc, ARRAY_SIZE(h1940_iodesc));
 297         s3c24xx_init_clocks(0);
 298         s3c24xx_init_uarts(h1940_uartcfgs, ARRAY_SIZE(h1940_uartcfgs));
 299
 300         /* setup PM */
 301
 302 #ifdef CONFIG_PM_H1940
 303         memcpy(phys_to_virt(H1940_SUSPEND_RESUMEAT), h1940_pm_return, 1024);
 304 #endif
 305         s3c_pm_init();
 306 }
 307
 308 /* H1940 and RX3715 need to reserve this for suspend */
 309 static void __init h1940_reserve(void)
 310 {
 311         memblock_reserve(0x30003000, 0x1000);
 312         memblock_reserve(0x30081000, 0x1000);
 313 }
 314
 315 static void __init h1940_init_irq(void)
 316 {
 317         s3c24xx_init_irq();
 318 }
 319
 320 static void __init h1940_init(void)
 321 {
 322         u32 tmp;
 323
 324         s3c24xx_fb_set_platdata(&h1940_fb_info);
 325         s3c24xx_mci_set_platdata(&h1940_mmc_cfg);
 326         s3c24xx_udc_set_platdata(&h1940_udc_cfg);
 327         s3c24xx_ts_set_platdata(&h1940_ts_cfg);
 328         s3c_i2c0_set_platdata(NULL);
 329
 330         /* Turn off suspend on both USB ports, and switch the
 331          * selectable USB port to USB device mode. */
 332
 333         s3c2410_modify_misccr(S3C2410_MISCCR_USBHOST |
 334                               S3C2410_MISCCR_USBSUSPND0 |
 335                               S3C2410_MISCCR_USBSUSPND1, 0x0);
 336
 337         tmp =   (0x78 << S3C24XX_PLLCON_MDIVSHIFT)
 338               | (0x02 << S3C24XX_PLLCON_PDIVSHIFT)
 339               | (0x03 << S3C24XX_PLLCON_SDIVSHIFT);
 340         writel(tmp, S3C2410_UPLLCON);
 341
 342         gpio_request(S3C2410_GPC(0), "LCD power");
 343         gpio_request(S3C2410_GPC(5), "LCD power");
 344         gpio_request(S3C2410_GPC(6), "LCD power");
 345
 346         gpio_direction_input(S3C2410_GPC(6));
 347
 348         platform_add_devices(h1940_devices, ARRAY_SIZE(h1940_devices));
 349 }
 350
 351 MACHINE_START(H1940, "IPAQ-H1940")
 352         /* Maintainer: Ben Dooks <ben-linux@fluff.org> */
 353         .phys_io        = S3C2410_PA_UART,
 354         .io_pg_offst    = (((u32)S3C24XX_VA_UART) >> 18) & 0xfffc,
 355         .boot_params    = S3C2410_SDRAM_PA + 0x100,
 356         .map_io         = h1940_map_io,
 357         .reserve        = h1940_reserve,
 358         .init_irq       = h1940_init_irq,
 359         .init_machine   = h1940_init,
 360         .timer          = &s3c24xx_timer,
 361 MACHINE_END