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 <plat/udc.h>
  50 #include <plat/iic.h>
  51
  52 #include <plat/gpio-cfg.h>
  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 #include <plat/ts.h>
  60
  61 static struct map_desc h1940_iodesc[] __initdata = {
  62         [0] = {
  63                 .virtual        = (unsigned long)H1940_LATCH,
  64                 .pfn            = __phys_to_pfn(H1940_PA_LATCH),
  65                 .length         = SZ_16K,
  66                 .type           = MT_DEVICE
  67         },
  68 };
  69
  70 #define UCON S3C2410_UCON_DEFAULT | S3C2410_UCON_UCLK
  71 #define ULCON S3C2410_LCON_CS8 | S3C2410_LCON_PNONE | S3C2410_LCON_STOPB
  72 #define UFCON S3C2410_UFCON_RXTRIG8 | S3C2410_UFCON_FIFOMODE
  73
  74 static struct s3c2410_uartcfg h1940_uartcfgs[] __initdata = {
  75         [0] = {
  76                 .hwport      = 0,
  77                 .flags       = 0,
  78                 .ucon        = 0x3c5,
  79                 .ulcon       = 0x03,
  80                 .ufcon       = 0x51,
  81         },
  82         [1] = {
  83                 .hwport      = 1,
  84                 .flags       = 0,
  85                 .ucon        = 0x245,
  86                 .ulcon       = 0x03,
  87                 .ufcon       = 0x00,
  88         },
  89         /* IR port */
  90         [2] = {
  91                 .hwport      = 2,
  92                 .flags       = 0,
  93                 .uart_flags  = UPF_CONS_FLOW,
  94                 .ucon        = 0x3c5,
  95                 .ulcon       = 0x43,
  96                 .ufcon       = 0x51,
  97         }
  98 };
  99
 100 /* Board control latch control */
 101
 102 static unsigned int latch_state = H1940_LATCH_DEFAULT;
 103
 104 void h1940_latch_control(unsigned int clear, unsigned int set)
 105 {
 106         unsigned long flags;
 107
 108         local_irq_save(flags);
 109
 110         latch_state &= ~clear;
 111         latch_state |= set;
 112
 113         __raw_writel(latch_state, H1940_LATCH);
 114
 115         local_irq_restore(flags);
 116 }
 117
 118 EXPORT_SYMBOL_GPL(h1940_latch_control);
 119
 120 static void h1940_udc_pullup(enum s3c2410_udc_cmd_e cmd)
 121 {
 122         printk(KERN_DEBUG "udc: pullup(%d)\n",cmd);
 123
 124         switch (cmd)
 125         {
 126                 case S3C2410_UDC_P_ENABLE :
 127                         h1940_latch_control(0, H1940_LATCH_USB_DP);
 128                         break;
 129                 case S3C2410_UDC_P_DISABLE :
 130                         h1940_latch_control(H1940_LATCH_USB_DP, 0);
 131                         break;
 132                 case S3C2410_UDC_P_RESET :
 133                         break;
 134                 default:
 135                         break;
 136         }
 137 }
 138
 139 static struct s3c2410_udc_mach_info h1940_udc_cfg __initdata = {
 140         .udc_command            = h1940_udc_pullup,
 141         .vbus_pin               = S3C2410_GPG(5),
 142         .vbus_pin_inverted      = 1,
 143 };
 144
 145 static struct s3c2410_ts_mach_info h1940_ts_cfg __initdata = {
 146                 .delay = 10000,
 147                 .presc = 49,
 148                 .oversampling_shift = 2,
 149                 .cfg_gpio = s3c24xx_ts_cfg_gpio,
 150 };
 151
 152 /**
 153  * Set lcd on or off
 154  **/
 155 static struct s3c2410fb_display h1940_lcd __initdata = {
 156         .lcdcon5=       S3C2410_LCDCON5_FRM565 | \
 157                         S3C2410_LCDCON5_INVVLINE | \
 158                         S3C2410_LCDCON5_HWSWP,
 159
 160         .type =         S3C2410_LCDCON1_TFT,
 161         .width =        240,
 162         .height =       320,
 163         .pixclock =     260000,
 164         .xres =         240,
 165         .yres =         320,
 166         .bpp =          16,
 167         .left_margin =  8,
 168         .right_margin = 20,
 169         .hsync_len =    4,
 170         .upper_margin = 8,
 171         .lower_margin = 7,
 172         .vsync_len =    1,
 173 };
 174
 175 static struct s3c2410fb_mach_info h1940_fb_info __initdata = {
 176         .displays = &h1940_lcd,
 177         .num_displays = 1,
 178         .default_display = 0,
 179
 180         .lpcsel=        0x02,
 181         .gpccon=        0xaa940659,
 182         .gpccon_mask=   0xffffffff,
 183         .gpcup=         0x0000ffff,
 184         .gpcup_mask=    0xffffffff,
 185         .gpdcon=        0xaa84aaa0,
 186         .gpdcon_mask=   0xffffffff,
 187         .gpdup=         0x0000faff,
 188         .gpdup_mask=    0xffffffff,
 189 };
 190
 191 static struct platform_device h1940_device_leds = {
 192         .name             = "h1940-leds",
 193         .id               = -1,
 194 };
 195
 196 static struct platform_device h1940_device_bluetooth = {
 197         .name             = "h1940-bt",
 198         .id               = -1,
 199 };
 200
 201 static struct s3c24xx_mci_pdata h1940_mmc_cfg __initdata = {
 202         .gpio_detect   = S3C2410_GPF(5),
 203         .gpio_wprotect = S3C2410_GPH(8),
 204         .set_power     = NULL,
 205         .ocr_avail     = MMC_VDD_32_33,
 206 };
 207
 208 static int h1940_backlight_init(struct device *dev)
 209 {
 210         gpio_request(S3C2410_GPB(0), "Backlight");
 211
 212         gpio_direction_output(S3C2410_GPB(0), 0);
 213         s3c_gpio_setpull(S3C2410_GPB(0), S3C_GPIO_PULL_NONE);
 214         s3c_gpio_cfgpin(S3C2410_GPB(0), S3C2410_GPB0_TOUT0);
 215
 216         return 0;
 217 }
 218
 219 static void h1940_backlight_exit(struct device *dev)
 220 {
 221         gpio_direction_output(S3C2410_GPB(0), 1);
 222 }
 223
 224 static struct platform_pwm_backlight_data backlight_data = {
 225         .pwm_id         = 0,
 226         .max_brightness = 100,
 227         .dft_brightness = 50,
 228         /* tcnt = 0x31 */
 229         .pwm_period_ns  = 36296,
 230         .init           = h1940_backlight_init,
 231         .exit           = h1940_backlight_exit,
 232 };
 233
 234 static struct platform_device h1940_backlight = {
 235         .name = "pwm-backlight",
 236         .dev  = {
 237                 .parent = &s3c_device_timer[0].dev,
 238                 .platform_data = &backlight_data,
 239         },
 240         .id   = -1,
 241 };
 242
 243 static void h1940_lcd_power_set(struct plat_lcd_data *pd,
 244                                         unsigned int power)
 245 {
 246         int value;
 247
 248         if (!power) {
 249                 /* set to 3ec */
 250                 gpio_direction_output(S3C2410_GPC(0), 0);
 251                 /* wait for 3ac */
 252                 do {
 253                         value = gpio_get_value(S3C2410_GPC(6));
 254                 } while (value);
 255                 /* set to 38c */
 256                 gpio_direction_output(S3C2410_GPC(5), 0);
 257         } else {
 258                 /* Set to 3ac */
 259                 gpio_direction_output(S3C2410_GPC(5), 1);
 260                 /* Set to 3ad */
 261                 gpio_direction_output(S3C2410_GPC(0), 1);
 262         }
 263 }
 264
 265 static struct plat_lcd_data h1940_lcd_power_data = {
 266         .set_power      = h1940_lcd_power_set,
 267 };
 268
 269 static struct platform_device h1940_lcd_powerdev = {
 270         .name                   = "platform-lcd",
 271         .dev.parent             = &s3c_device_lcd.dev,
 272         .dev.platform_data      = &h1940_lcd_power_data,
 273 };
 274
 275 static struct platform_device *h1940_devices[] __initdata = {
 276         &s3c_device_ohci,
 277         &s3c_device_lcd,
 278         &s3c_device_wdt,
 279         &s3c_device_i2c0,
 280         &s3c_device_iis,
 281         &s3c_device_usbgadget,
 282         &h1940_device_leds,
 283         &h1940_device_bluetooth,
 284         &s3c_device_sdi,
 285         &s3c_device_rtc,
 286         &s3c_device_timer[0],
 287         &h1940_backlight,
 288         &h1940_lcd_powerdev,
 289         &s3c_device_adc,
 290         &s3c_device_ts,
 291 };
 292
 293 static void __init h1940_map_io(void)
 294 {
 295         s3c24xx_init_io(h1940_iodesc, ARRAY_SIZE(h1940_iodesc));
 296         s3c24xx_init_clocks(0);
 297         s3c24xx_init_uarts(h1940_uartcfgs, ARRAY_SIZE(h1940_uartcfgs));
 298
 299         /* setup PM */
 300
 301 #ifdef CONFIG_PM_H1940
 302         memcpy(phys_to_virt(H1940_SUSPEND_RESUMEAT), h1940_pm_return, 1024);
 303 #endif
 304         s3c_pm_init();
 305 }
 306
 307 static void __init h1940_init_irq(void)
 308 {
 309         s3c24xx_init_irq();
 310 }
 311
 312 static void __init h1940_init(void)
 313 {
 314         u32 tmp;
 315
 316         s3c24xx_fb_set_platdata(&h1940_fb_info);
 317         s3c24xx_mci_set_platdata(&h1940_mmc_cfg);
 318         s3c24xx_udc_set_platdata(&h1940_udc_cfg);
 319         s3c24xx_ts_set_platdata(&h1940_ts_cfg);
 320         s3c_i2c0_set_platdata(NULL);
 321
 322         /* Turn off suspend on both USB ports, and switch the
 323          * selectable USB port to USB device mode. */
 324
 325         s3c2410_modify_misccr(S3C2410_MISCCR_USBHOST |
 326                               S3C2410_MISCCR_USBSUSPND0 |
 327                               S3C2410_MISCCR_USBSUSPND1, 0x0);
 328
 329         tmp =   (0x78 << S3C24XX_PLLCON_MDIVSHIFT)
 330               | (0x02 << S3C24XX_PLLCON_PDIVSHIFT)
 331               | (0x03 << S3C24XX_PLLCON_SDIVSHIFT);
 332         writel(tmp, S3C2410_UPLLCON);
 333
 334         gpio_request(S3C2410_GPC(0), "LCD power");
 335         gpio_request(S3C2410_GPC(5), "LCD power");
 336         gpio_request(S3C2410_GPC(6), "LCD power");
 337
 338         gpio_direction_input(S3C2410_GPC(6));
 339
 340         platform_add_devices(h1940_devices, ARRAY_SIZE(h1940_devices));
 341 }
 342
 343 MACHINE_START(H1940, "IPAQ-H1940")
 344         /* Maintainer: Ben Dooks <ben-linux@fluff.org> */
 345         .phys_io        = S3C2410_PA_UART,
 346         .io_pg_offst    = (((u32)S3C24XX_VA_UART) >> 18) & 0xfffc,
 347         .boot_params    = S3C2410_SDRAM_PA + 0x100,
 348         .map_io         = h1940_map_io,
 349         .init_irq       = h1940_init_irq,
 350         .init_machine   = h1940_init,
 351         .timer          = &s3c24xx_timer,
 352 MACHINE_END