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