arch/arm/mach-s3c24xx/mach-n30.c

   1 /* Machine specific code for the Acer n30, Acer N35, Navman PiN 570,
   2  * Yakumo AlphaX and Airis NC05 PDAs.
   3  *
   4  * Copyright (c) 2003-2005 Simtec Electronics
   5  *      Ben Dooks <ben@simtec.co.uk>
   6  *
   7  * Copyright (c) 2005-2008 Christer Weinigel <christer@weinigel.se>
   8  *
   9  * There is a wiki with more information about the n30 port at
  10  * http://handhelds.org/moin/moin.cgi/AcerN30Documentation .
  11  *
  12  * This program is free software; you can redistribute it and/or modify
  13  * it under the terms of the GNU General Public License version 2 as
  14  * published by the Free Software Foundation.
  15  */
  16
  17 #include <linux/kernel.h>
  18 #include <linux/types.h>
  19
  20 #include <linux/gpio_keys.h>
  21 #include <linux/init.h>
  22 #include <linux/gpio.h>
  23 #include <linux/input.h>
  24 #include <linux/interrupt.h>
  25 #include <linux/platform_device.h>
  26 #include <linux/serial_core.h>
  27 #include <linux/timer.h>
  28 #include <linux/io.h>
  29 #include <linux/mmc/host.h>
  30
  31 #include <mach/hardware.h>
  32 #include <asm/irq.h>
  33 #include <asm/mach-types.h>
  34
  35 #include <mach/fb.h>
  36 #include <linux/platform_data/leds-s3c24xx.h>
  37 #include <mach/regs-gpio.h>
  38 #include <mach/regs-lcd.h>
  39
  40 #include <asm/mach/arch.h>
  41 #include <asm/mach/irq.h>
  42 #include <asm/mach/map.h>
  43
  44 #include <linux/platform_data/i2c-s3c2410.h>
  45 #include <plat/regs-serial.h>
  46
  47 #include <plat/clock.h>
  48 #include <plat/cpu.h>
  49 #include <plat/devs.h>
  50 #include <linux/platform_data/mmc-s3cmci.h>
  51 #include <linux/platform_data/usb-s3c2410_udc.h>
  52
  53 #include "common.h"
  54
  55 static struct map_desc n30_iodesc[] __initdata = {
  56         /* nothing here yet */
  57 };
  58
  59 static struct s3c2410_uartcfg n30_uartcfgs[] = {
  60         /* Normal serial port */
  61         [0] = {
  62                 .hwport      = 0,
  63                 .flags       = 0,
  64                 .ucon        = 0x2c5,
  65                 .ulcon       = 0x03,
  66                 .ufcon       = 0x51,
  67         },
  68         /* IR port */
  69         [1] = {
  70                 .hwport      = 1,
  71                 .flags       = 0,
  72                 .uart_flags  = UPF_CONS_FLOW,
  73                 .ucon        = 0x2c5,
  74                 .ulcon       = 0x43,
  75                 .ufcon       = 0x51,
  76         },
  77         /* On the N30 the bluetooth controller is connected here.
  78          * On the N35 and variants the GPS receiver is connected here. */
  79         [2] = {
  80                 .hwport      = 2,
  81                 .flags       = 0,
  82                 .ucon        = 0x2c5,
  83                 .ulcon       = 0x03,
  84                 .ufcon       = 0x51,
  85         },
  86 };
  87
  88 static struct s3c2410_udc_mach_info n30_udc_cfg __initdata = {
  89         .vbus_pin               = S3C2410_GPG(1),
  90         .vbus_pin_inverted      = 0,
  91         .pullup_pin             = S3C2410_GPB(3),
  92 };
  93
  94 static struct gpio_keys_button n30_buttons[] = {
  95         {
  96                 .gpio           = S3C2410_GPF(0),
  97                 .code           = KEY_POWER,
  98                 .desc           = "Power",
  99                 .active_low     = 0,
 100         },
 101         {
 102                 .gpio           = S3C2410_GPG(9),
 103                 .code           = KEY_UP,
 104                 .desc           = "Thumbwheel Up",
 105                 .active_low     = 0,
 106         },
 107         {
 108                 .gpio           = S3C2410_GPG(8),
 109                 .code           = KEY_DOWN,
 110                 .desc           = "Thumbwheel Down",
 111                 .active_low     = 0,
 112         },
 113         {
 114                 .gpio           = S3C2410_GPG(7),
 115                 .code           = KEY_ENTER,
 116                 .desc           = "Thumbwheel Press",
 117                 .active_low     = 0,
 118         },
 119         {
 120                 .gpio           = S3C2410_GPF(7),
 121                 .code           = KEY_HOMEPAGE,
 122                 .desc           = "Home",
 123                 .active_low     = 0,
 124         },
 125         {
 126                 .gpio           = S3C2410_GPF(6),
 127                 .code           = KEY_CALENDAR,
 128                 .desc           = "Calendar",
 129                 .active_low     = 0,
 130         },
 131         {
 132                 .gpio           = S3C2410_GPF(5),
 133                 .code           = KEY_ADDRESSBOOK,
 134                 .desc           = "Contacts",
 135                 .active_low     = 0,
 136         },
 137         {
 138                 .gpio           = S3C2410_GPF(4),
 139                 .code           = KEY_MAIL,
 140                 .desc           = "Mail",
 141                 .active_low     = 0,
 142         },
 143 };
 144
 145 static struct gpio_keys_platform_data n30_button_data = {
 146         .buttons        = n30_buttons,
 147         .nbuttons       = ARRAY_SIZE(n30_buttons),
 148 };
 149
 150 static struct platform_device n30_button_device = {
 151         .name           = "gpio-keys",
 152         .id             = -1,
 153         .dev            = {
 154                 .platform_data  = &n30_button_data,
 155         }
 156 };
 157
 158 static struct gpio_keys_button n35_buttons[] = {
 159         {
 160                 .gpio           = S3C2410_GPF(0),
 161                 .code           = KEY_POWER,
 162                 .type           = EV_PWR,
 163                 .desc           = "Power",
 164                 .active_low     = 0,
 165                 .wakeup         = 1,
 166         },
 167         {
 168                 .gpio           = S3C2410_GPG(9),
 169                 .code           = KEY_UP,
 170                 .desc           = "Joystick Up",
 171                 .active_low     = 0,
 172         },
 173         {
 174                 .gpio           = S3C2410_GPG(8),
 175                 .code           = KEY_DOWN,
 176                 .desc           = "Joystick Down",
 177                 .active_low     = 0,
 178         },
 179         {
 180                 .gpio           = S3C2410_GPG(6),
 181                 .code           = KEY_DOWN,
 182                 .desc           = "Joystick Left",
 183                 .active_low     = 0,
 184         },
 185         {
 186                 .gpio           = S3C2410_GPG(5),
 187                 .code           = KEY_DOWN,
 188                 .desc           = "Joystick Right",
 189                 .active_low     = 0,
 190         },
 191         {
 192                 .gpio           = S3C2410_GPG(7),
 193                 .code           = KEY_ENTER,
 194                 .desc           = "Joystick Press",
 195                 .active_low     = 0,
 196         },
 197         {
 198                 .gpio           = S3C2410_GPF(7),
 199                 .code           = KEY_HOMEPAGE,
 200                 .desc           = "Home",
 201                 .active_low     = 0,
 202         },
 203         {
 204                 .gpio           = S3C2410_GPF(6),
 205                 .code           = KEY_CALENDAR,
 206                 .desc           = "Calendar",
 207                 .active_low     = 0,
 208         },
 209         {
 210                 .gpio           = S3C2410_GPF(5),
 211                 .code           = KEY_ADDRESSBOOK,
 212                 .desc           = "Contacts",
 213                 .active_low     = 0,
 214         },
 215         {
 216                 .gpio           = S3C2410_GPF(4),
 217                 .code           = KEY_MAIL,
 218                 .desc           = "Mail",
 219                 .active_low     = 0,
 220         },
 221         {
 222                 .gpio           = S3C2410_GPF(3),
 223                 .code           = SW_RADIO,
 224                 .desc           = "GPS Antenna",
 225                 .active_low     = 0,
 226         },
 227         {
 228                 .gpio           = S3C2410_GPG(2),
 229                 .code           = SW_HEADPHONE_INSERT,
 230                 .desc           = "Headphone",
 231                 .active_low     = 0,
 232         },
 233 };
 234
 235 static struct gpio_keys_platform_data n35_button_data = {
 236         .buttons        = n35_buttons,
 237         .nbuttons       = ARRAY_SIZE(n35_buttons),
 238 };
 239
 240 static struct platform_device n35_button_device = {
 241         .name           = "gpio-keys",
 242         .id             = -1,
 243         .num_resources  = 0,
 244         .dev            = {
 245                 .platform_data  = &n35_button_data,
 246         }
 247 };
 248
 249 /* This is the bluetooth LED on the device. */
 250 static struct s3c24xx_led_platdata n30_blue_led_pdata = {
 251         .name           = "blue_led",
 252         .gpio           = S3C2410_GPG(6),
 253         .def_trigger    = "",
 254 };
 255
 256 /* This is the blue LED on the device. Originally used to indicate GPS activity
 257  * by flashing. */
 258 static struct s3c24xx_led_platdata n35_blue_led_pdata = {
 259         .name           = "blue_led",
 260         .gpio           = S3C2410_GPD(8),
 261         .def_trigger    = "",
 262 };
 263
 264 /* This LED is driven by the battery microcontroller, and is blinking
 265  * red, blinking green or solid green when the battery is low,
 266  * charging or full respectively.  By driving GPD9 low, it's possible
 267  * to force the LED to blink red, so call that warning LED.  */
 268 static struct s3c24xx_led_platdata n30_warning_led_pdata = {
 269         .name           = "warning_led",
 270         .flags          = S3C24XX_LEDF_ACTLOW,
 271         .gpio           = S3C2410_GPD(9),
 272         .def_trigger    = "",
 273 };
 274
 275 static struct s3c24xx_led_platdata n35_warning_led_pdata = {
 276         .name           = "warning_led",
 277         .flags          = S3C24XX_LEDF_ACTLOW | S3C24XX_LEDF_TRISTATE,
 278         .gpio           = S3C2410_GPD(9),
 279         .def_trigger    = "",
 280 };
 281
 282 static struct platform_device n30_blue_led = {
 283         .name           = "s3c24xx_led",
 284         .id             = 1,
 285         .dev            = {
 286                 .platform_data  = &n30_blue_led_pdata,
 287         },
 288 };
 289
 290 static struct platform_device n35_blue_led = {
 291         .name           = "s3c24xx_led",
 292         .id             = 1,
 293         .dev            = {
 294                 .platform_data  = &n35_blue_led_pdata,
 295         },
 296 };
 297
 298 static struct platform_device n30_warning_led = {
 299         .name           = "s3c24xx_led",
 300         .id             = 2,
 301         .dev            = {
 302                 .platform_data  = &n30_warning_led_pdata,
 303         },
 304 };
 305
 306 static struct platform_device n35_warning_led = {
 307         .name           = "s3c24xx_led",
 308         .id             = 2,
 309         .dev            = {
 310                 .platform_data  = &n35_warning_led_pdata,
 311         },
 312 };
 313
 314 static struct s3c2410fb_display n30_display __initdata = {
 315         .type           = S3C2410_LCDCON1_TFT,
 316         .width          = 240,
 317         .height         = 320,
 318         .pixclock       = 170000,
 319
 320         .xres           = 240,
 321         .yres           = 320,
 322         .bpp            = 16,
 323         .left_margin    = 3,
 324         .right_margin   = 40,
 325         .hsync_len      = 40,
 326         .upper_margin   = 2,
 327         .lower_margin   = 3,
 328         .vsync_len      = 2,
 329
 330         .lcdcon5 = S3C2410_LCDCON5_INVVLINE | S3C2410_LCDCON5_INVVFRAME,
 331 };
 332
 333 static struct s3c2410fb_mach_info n30_fb_info __initdata = {
 334         .displays       = &n30_display,
 335         .num_displays   = 1,
 336         .default_display = 0,
 337         .lpcsel         = 0x06,
 338 };
 339
 340 static void n30_sdi_set_power(unsigned char power_mode, unsigned short vdd)
 341 {
 342         switch (power_mode) {
 343         case MMC_POWER_ON:
 344         case MMC_POWER_UP:
 345                 gpio_set_value(S3C2410_GPG(4), 1);
 346                 break;
 347         case MMC_POWER_OFF:
 348         default:
 349                 gpio_set_value(S3C2410_GPG(4), 0);
 350                 break;
 351         }
 352 }
 353
 354 static struct s3c24xx_mci_pdata n30_mci_cfg __initdata = {
 355         .gpio_detect    = S3C2410_GPF(1),
 356         .gpio_wprotect  = S3C2410_GPG(10),
 357         .ocr_avail      = MMC_VDD_32_33,
 358         .set_power      = n30_sdi_set_power,
 359 };
 360
 361 static struct platform_device *n30_devices[] __initdata = {
 362         &s3c_device_lcd,
 363         &s3c_device_wdt,
 364         &s3c_device_i2c0,
 365         &s3c_device_iis,
 366         &s3c_device_ohci,
 367         &s3c_device_rtc,
 368         &s3c_device_usbgadget,
 369         &s3c_device_sdi,
 370         &n30_button_device,
 371         &n30_blue_led,
 372         &n30_warning_led,
 373 };
 374
 375 static struct platform_device *n35_devices[] __initdata = {
 376         &s3c_device_lcd,
 377         &s3c_device_wdt,
 378         &s3c_device_i2c0,
 379         &s3c_device_iis,
 380         &s3c_device_rtc,
 381         &s3c_device_usbgadget,
 382         &s3c_device_sdi,
 383         &n35_button_device,
 384         &n35_blue_led,
 385         &n35_warning_led,
 386 };
 387
 388 static struct s3c2410_platform_i2c __initdata n30_i2ccfg = {
 389         .flags          = 0,
 390         .slave_addr     = 0x10,
 391         .frequency      = 10*1000,
 392 };
 393
 394 /* Lots of hardcoded stuff, but it sets up the hardware in a useful
 395  * state so that we can boot Linux directly from flash. */
 396 static void __init n30_hwinit(void)
 397 {
 398         /* GPA0-11 special functions -- unknown what they do
 399          * GPA12 N30 special function -- unknown what it does
 400          *       N35/PiN output -- unknown what it does
 401          *
 402          * A12 is nGCS1 on the N30 and an output on the N35/PiN.  I
 403          * don't think it does anything useful on the N30, so I ought
 404          * to make it an output there too since it always driven to 0
 405          * as far as I can tell. */
 406         if (machine_is_n30())
 407                 __raw_writel(0x007fffff, S3C2410_GPACON);
 408         if (machine_is_n35())
 409                 __raw_writel(0x007fefff, S3C2410_GPACON);
 410         __raw_writel(0x00000000, S3C2410_GPADAT);
 411
 412         /* GPB0 TOUT0 backlight level
 413          * GPB1 output 1=backlight on
 414          * GPB2 output IrDA enable 0=transceiver enabled, 1=disabled
 415          * GPB3 output USB D+ pull up 0=disabled, 1=enabled
 416          * GPB4 N30 output -- unknown function
 417          *      N30/PiN GPS control 0=GPS enabled, 1=GPS disabled
 418          * GPB5 output -- unknown function
 419          * GPB6 input -- unknown function
 420          * GPB7 output -- unknown function
 421          * GPB8 output -- probably LCD driver enable
 422          * GPB9 output -- probably LCD VSYNC driver enable
 423          * GPB10 output -- probably LCD HSYNC driver enable
 424          */
 425         __raw_writel(0x00154556, S3C2410_GPBCON);
 426         __raw_writel(0x00000750, S3C2410_GPBDAT);
 427         __raw_writel(0x00000073, S3C2410_GPBUP);
 428
 429         /* GPC0 input RS232 DCD/DSR/RI
 430          * GPC1 LCD
 431          * GPC2 output RS232 DTR?
 432          * GPC3 input RS232 DCD/DSR/RI
 433          * GPC4 LCD
 434          * GPC5 output 0=NAND write enabled, 1=NAND write protect
 435          * GPC6 input -- unknown function
 436          * GPC7 input charger status 0=charger connected
 437          *      this input can be triggered by power on the USB device
 438          *      port too, but will go back to disconnected soon after.
 439          * GPC8 N30/N35 output -- unknown function, always driven to 1
 440          *      PiN input -- unknown function, always read as 1
 441          *      Make it an input with a pull up for all models.
 442          * GPC9-15 LCD
 443          */
 444         __raw_writel(0xaaa80618, S3C2410_GPCCON);
 445         __raw_writel(0x0000014c, S3C2410_GPCDAT);
 446         __raw_writel(0x0000fef2, S3C2410_GPCUP);
 447
 448         /* GPD0 input -- unknown function
 449          * GPD1-D7 LCD
 450          * GPD8 N30 output -- unknown function
 451          *      N35/PiN output 1=GPS LED on
 452          * GPD9 output 0=power led blinks red, 1=normal power led function
 453          * GPD10 output -- unknown function
 454          * GPD11-15 LCD drivers
 455          */
 456         __raw_writel(0xaa95aaa4, S3C2410_GPDCON);
 457         __raw_writel(0x00000601, S3C2410_GPDDAT);
 458         __raw_writel(0x0000fbfe, S3C2410_GPDUP);
 459
 460         /* GPE0-4 I2S audio bus
 461          * GPE5-10 SD/MMC bus
 462          * E11-13 outputs -- unknown function, probably power management
 463          * E14-15 I2C bus connected to the battery controller
 464          */
 465         __raw_writel(0xa56aaaaa, S3C2410_GPECON);
 466         __raw_writel(0x0000efc5, S3C2410_GPEDAT);
 467         __raw_writel(0x0000f81f, S3C2410_GPEUP);
 468
 469         /* GPF0  input 0=power button pressed
 470          * GPF1  input SD/MMC switch 0=card present
 471          * GPF2  N30 1=reset button pressed (inverted compared to the rest)
 472          *       N35/PiN 0=reset button pressed
 473          * GPF3  N30/PiN input -- unknown function
 474          *       N35 input GPS antenna position, 0=antenna closed, 1=open
 475          * GPF4  input 0=button 4 pressed
 476          * GPF5  input 0=button 3 pressed
 477          * GPF6  input 0=button 2 pressed
 478          * GPF7  input 0=button 1 pressed
 479          */
 480         __raw_writel(0x0000aaaa, S3C2410_GPFCON);
 481         __raw_writel(0x00000000, S3C2410_GPFDAT);
 482         __raw_writel(0x000000ff, S3C2410_GPFUP);
 483
 484         /* GPG0  input RS232 DCD/DSR/RI
 485          * GPG1  input 1=USB gadget port has power from a host
 486          * GPG2  N30 input -- unknown function
 487          *       N35/PiN input 0=headphones plugged in, 1=not plugged in
 488          * GPG3  N30 output -- unknown function
 489          *       N35/PiN input with unknown function
 490          * GPG4  N30 output 0=MMC enabled, 1=MMC disabled
 491          * GPG5  N30 output 0=BlueTooth chip disabled, 1=enabled
 492          *       N35/PiN input joystick right
 493          * GPG6  N30 output 0=blue led on, 1=off
 494          *       N35/PiN input joystick left
 495          * GPG7  input 0=thumbwheel pressed
 496          * GPG8  input 0=thumbwheel down
 497          * GPG9  input 0=thumbwheel up
 498          * GPG10 input SD/MMC write protect switch
 499          * GPG11 N30 input -- unknown function
 500          *       N35 output 0=GPS antenna powered, 1=not powered
 501          *       PiN output -- unknown function
 502          * GPG12-15 touch screen functions
 503          *
 504          * The pullups differ between the models, so enable all
 505          * pullups that are enabled on any of the models.
 506          */
 507         if (machine_is_n30())
 508                 __raw_writel(0xff0a956a, S3C2410_GPGCON);
 509         if (machine_is_n35())
 510                 __raw_writel(0xff4aa92a, S3C2410_GPGCON);
 511         __raw_writel(0x0000e800, S3C2410_GPGDAT);
 512         __raw_writel(0x0000f86f, S3C2410_GPGUP);
 513
 514         /* GPH0/1/2/3 RS232 serial port
 515          * GPH4/5 IrDA serial port
 516          * GPH6/7  N30 BlueTooth serial port
 517          *         N35/PiN GPS receiver
 518          * GPH8 input -- unknown function
 519          * GPH9 CLKOUT0 HCLK -- unknown use
 520          * GPH10 CLKOUT1 FCLK -- unknown use
 521          *
 522          * The pull ups for H6/H7 are enabled on N30 but not on the
 523          * N35/PiN.  I suppose is useful for a budget model of the N30
 524          * with no bluetooh.  It doesn't hurt to have the pull ups
 525          * enabled on the N35, so leave them enabled for all models.
 526          */
 527         __raw_writel(0x0028aaaa, S3C2410_GPHCON);
 528         __raw_writel(0x000005ef, S3C2410_GPHDAT);
 529         __raw_writel(0x0000063f, S3C2410_GPHUP);
 530 }
 531
 532 static void __init n30_map_io(void)
 533 {
 534         s3c24xx_init_io(n30_iodesc, ARRAY_SIZE(n30_iodesc));
 535         n30_hwinit();
 536         s3c24xx_init_clocks(0);
 537         s3c24xx_init_uarts(n30_uartcfgs, ARRAY_SIZE(n30_uartcfgs));
 538 }
 539
 540 /* GPB3 is the line that controls the pull-up for the USB D+ line */
 541
 542 static void __init n30_init(void)
 543 {
 544         WARN_ON(gpio_request(S3C2410_GPG(4), "mmc power"));
 545
 546         s3c24xx_fb_set_platdata(&n30_fb_info);
 547         s3c24xx_udc_set_platdata(&n30_udc_cfg);
 548         s3c24xx_mci_set_platdata(&n30_mci_cfg);
 549         s3c_i2c0_set_platdata(&n30_i2ccfg);
 550
 551         /* Turn off suspend on both USB ports, and switch the
 552          * selectable USB port to USB device mode. */
 553
 554         s3c2410_modify_misccr(S3C2410_MISCCR_USBHOST |
 555                               S3C2410_MISCCR_USBSUSPND0 |
 556                               S3C2410_MISCCR_USBSUSPND1, 0x0);
 557
 558         if (machine_is_n30()) {
 559                 /* Turn off suspend on both USB ports, and switch the
 560                  * selectable USB port to USB device mode. */
 561                 s3c2410_modify_misccr(S3C2410_MISCCR_USBHOST |
 562                                       S3C2410_MISCCR_USBSUSPND0 |
 563                                       S3C2410_MISCCR_USBSUSPND1, 0x0);
 564
 565                 platform_add_devices(n30_devices, ARRAY_SIZE(n30_devices));
 566         }
 567
 568         if (machine_is_n35()) {
 569                 /* Turn off suspend and switch the selectable USB port
 570                  * to USB device mode.  Turn on suspend for the host
 571                  * port since it is not connected on the N35.
 572                  *
 573                  * Actually, the host port is available at some pads
 574                  * on the back of the device, so it would actually be
 575                  * possible to add a USB device inside the N35 if you
 576                  * are willing to do some hardware modifications. */
 577                 s3c2410_modify_misccr(S3C2410_MISCCR_USBHOST |
 578                                       S3C2410_MISCCR_USBSUSPND0 |
 579                                       S3C2410_MISCCR_USBSUSPND1,
 580                                       S3C2410_MISCCR_USBSUSPND0);
 581
 582                 platform_add_devices(n35_devices, ARRAY_SIZE(n35_devices));
 583         }
 584 }
 585
 586 MACHINE_START(N30, "Acer-N30")
 587         /* Maintainer: Christer Weinigel <christer@weinigel.se>,
 588                                 Ben Dooks <ben-linux@fluff.org>
 589         */
 590         .atag_offset    = 0x100,
 591         .init_time      = s3c24xx_timer_init,
 592         .init_machine   = n30_init,
 593         .init_irq       = s3c24xx_init_irq,
 594         .map_io         = n30_map_io,
 595         .restart        = s3c2410_restart,
 596 MACHINE_END
 597
 598 MACHINE_START(N35, "Acer-N35")
 599         /* Maintainer: Christer Weinigel <christer@weinigel.se>
 600         */
 601         .atag_offset    = 0x100,
 602         .init_time      = s3c24xx_timer_init,
 603         .init_machine   = n30_init,
 604         .init_irq       = s3c24xx_init_irq,
 605         .map_io         = n30_map_io,
 606         .restart        = s3c2410_restart,
 607 MACHINE_END