arch/arm/mach-s3c2410/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
  30 #include <mach/hardware.h>
  31 #include <asm/irq.h>
  32 #include <asm/mach-types.h>
  33
  34 #include <mach/fb.h>
  35 #include <mach/leds-gpio.h>
  36 #include <mach/regs-gpio.h>
  37 #include <mach/regs-lcd.h>
  38
  39 #include <asm/mach/arch.h>
  40 #include <asm/mach/irq.h>
  41 #include <asm/mach/map.h>
  42
  43 #include <plat/iic.h>
  44 #include <plat/regs-serial.h>
  45
  46 #include <plat/clock.h>
  47 #include <plat/cpu.h>
  48 #include <plat/devs.h>
  49 #include <plat/s3c2410.h>
  50 #include <plat/udc.h>
  51
  52 static struct map_desc n30_iodesc[] __initdata = {
  53         /* nothing here yet */
  54 };
  55
  56 static struct s3c2410_uartcfg n30_uartcfgs[] = {
  57         /* Normal serial port */
  58         [0] = {
  59                 .hwport      = 0,
  60                 .flags       = 0,
  61                 .ucon        = 0x2c5,
  62                 .ulcon       = 0x03,
  63                 .ufcon       = 0x51,
  64         },
  65         /* IR port */
  66         [1] = {
  67                 .hwport      = 1,
  68                 .flags       = 0,
  69                 .uart_flags  = UPF_CONS_FLOW,
  70                 .ucon        = 0x2c5,
  71                 .ulcon       = 0x43,
  72                 .ufcon       = 0x51,
  73         },
  74         /* On the N30 the bluetooth controller is connected here.
  75          * On the N35 and variants the GPS receiver is connected here. */
  76         [2] = {
  77                 .hwport      = 2,
  78                 .flags       = 0,
  79                 .ucon        = 0x2c5,
  80                 .ulcon       = 0x03,
  81                 .ufcon       = 0x51,
  82         },
  83 };
  84
  85 static void n30_udc_pullup(enum s3c2410_udc_cmd_e cmd)
  86 {
  87         switch (cmd) {
  88         case S3C2410_UDC_P_ENABLE :
  89                 s3c2410_gpio_setpin(S3C2410_GPB(3), 1);
  90                 break;
  91         case S3C2410_UDC_P_DISABLE :
  92                 s3c2410_gpio_setpin(S3C2410_GPB(3), 0);
  93                 break;
  94         case S3C2410_UDC_P_RESET :
  95                 break;
  96         default:
  97                 break;
  98         }
  99 }
 100
 101 static struct s3c2410_udc_mach_info n30_udc_cfg __initdata = {
 102         .udc_command            = n30_udc_pullup,
 103         .vbus_pin               = S3C2410_GPG(1),
 104         .vbus_pin_inverted      = 0,
 105 };
 106
 107 static struct gpio_keys_button n30_buttons[] = {
 108         {
 109                 .gpio           = S3C2410_GPF(0),
 110                 .code           = KEY_POWER,
 111                 .desc           = "Power",
 112                 .active_low     = 0,
 113         },
 114         {
 115                 .gpio           = S3C2410_GPG(9),
 116                 .code           = KEY_UP,
 117                 .desc           = "Thumbwheel Up",
 118                 .active_low     = 0,
 119         },
 120         {
 121                 .gpio           = S3C2410_GPG(8),
 122                 .code           = KEY_DOWN,
 123                 .desc           = "Thumbwheel Down",
 124                 .active_low     = 0,
 125         },
 126         {
 127                 .gpio           = S3C2410_GPG(7),
 128                 .code           = KEY_ENTER,
 129                 .desc           = "Thumbwheel Press",
 130                 .active_low     = 0,
 131         },
 132         {
 133                 .gpio           = S3C2410_GPF(7),
 134                 .code           = KEY_HOMEPAGE,
 135                 .desc           = "Home",
 136                 .active_low     = 0,
 137         },
 138         {
 139                 .gpio           = S3C2410_GPF(6),
 140                 .code           = KEY_CALENDAR,
 141                 .desc           = "Calendar",
 142                 .active_low     = 0,
 143         },
 144         {
 145                 .gpio           = S3C2410_GPF(5),
 146                 .code           = KEY_ADDRESSBOOK,
 147                 .desc           = "Contacts",
 148                 .active_low     = 0,
 149         },
 150         {
 151                 .gpio           = S3C2410_GPF(4),
 152                 .code           = KEY_MAIL,
 153                 .desc           = "Mail",
 154                 .active_low     = 0,
 155         },
 156 };
 157
 158 static struct gpio_keys_platform_data n30_button_data = {
 159         .buttons        = n30_buttons,
 160         .nbuttons       = ARRAY_SIZE(n30_buttons),
 161 };
 162
 163 static struct platform_device n30_button_device = {
 164         .name           = "gpio-keys",
 165         .id             = -1,
 166         .dev            = {
 167                 .platform_data  = &n30_button_data,
 168         }
 169 };
 170
 171 static struct gpio_keys_button n35_buttons[] = {
 172         {
 173                 .gpio           = S3C2410_GPF(0),
 174                 .code           = KEY_POWER,
 175                 .type           = EV_PWR,
 176                 .desc           = "Power",
 177                 .active_low     = 0,
 178                 .wakeup         = 1,
 179         },
 180         {
 181                 .gpio           = S3C2410_GPG(9),
 182                 .code           = KEY_UP,
 183                 .desc           = "Joystick Up",
 184                 .active_low     = 0,
 185         },
 186         {
 187                 .gpio           = S3C2410_GPG(8),
 188                 .code           = KEY_DOWN,
 189                 .desc           = "Joystick Down",
 190                 .active_low     = 0,
 191         },
 192         {
 193                 .gpio           = S3C2410_GPG(6),
 194                 .code           = KEY_DOWN,
 195                 .desc           = "Joystick Left",
 196                 .active_low     = 0,
 197         },
 198         {
 199                 .gpio           = S3C2410_GPG(5),
 200                 .code           = KEY_DOWN,
 201                 .desc           = "Joystick Right",
 202                 .active_low     = 0,
 203         },
 204         {
 205                 .gpio           = S3C2410_GPG(7),
 206                 .code           = KEY_ENTER,
 207                 .desc           = "Joystick Press",
 208                 .active_low     = 0,
 209         },
 210         {
 211                 .gpio           = S3C2410_GPF(7),
 212                 .code           = KEY_HOMEPAGE,
 213                 .desc           = "Home",
 214                 .active_low     = 0,
 215         },
 216         {
 217                 .gpio           = S3C2410_GPF(6),
 218                 .code           = KEY_CALENDAR,
 219                 .desc           = "Calendar",
 220                 .active_low     = 0,
 221         },
 222         {
 223                 .gpio           = S3C2410_GPF(5),
 224                 .code           = KEY_ADDRESSBOOK,
 225                 .desc           = "Contacts",
 226                 .active_low     = 0,
 227         },
 228         {
 229                 .gpio           = S3C2410_GPF(4),
 230                 .code           = KEY_MAIL,
 231                 .desc           = "Mail",
 232                 .active_low     = 0,
 233         },
 234         {
 235                 .gpio           = S3C2410_GPF(3),
 236                 .code           = SW_RADIO,
 237                 .desc           = "GPS Antenna",
 238                 .active_low     = 0,
 239         },
 240         {
 241                 .gpio           = S3C2410_GPG(2),
 242                 .code           = SW_HEADPHONE_INSERT,
 243                 .desc           = "Headphone",
 244                 .active_low     = 0,
 245         },
 246 };
 247
 248 static struct gpio_keys_platform_data n35_button_data = {
 249         .buttons        = n35_buttons,
 250         .nbuttons       = ARRAY_SIZE(n35_buttons),
 251 };
 252
 253 static struct platform_device n35_button_device = {
 254         .name           = "gpio-keys",
 255         .id             = -1,
 256         .num_resources  = 0,
 257         .dev            = {
 258                 .platform_data  = &n35_button_data,
 259         }
 260 };
 261
 262 /* This is the bluetooth LED on the device. */
 263 static struct s3c24xx_led_platdata n30_blue_led_pdata = {
 264         .name           = "blue_led",
 265         .gpio           = S3C2410_GPG(6),
 266         .def_trigger    = "",
 267 };
 268
 269 /* This is the blue LED on the device. Originaly used to indicate GPS activity
 270  * by flashing. */
 271 static struct s3c24xx_led_platdata n35_blue_led_pdata = {
 272         .name           = "blue_led",
 273         .gpio           = S3C2410_GPD(8),
 274         .def_trigger    = "",
 275 };
 276
 277 /* This LED is driven by the battery microcontroller, and is blinking
 278  * red, blinking green or solid green when the battery is low,
 279  * charging or full respectively.  By driving GPD9 low, it's possible
 280  * to force the LED to blink red, so call that warning LED.  */
 281 static struct s3c24xx_led_platdata n30_warning_led_pdata = {
 282         .name           = "warning_led",
 283         .flags          = S3C24XX_LEDF_ACTLOW,
 284         .gpio           = S3C2410_GPD(9),
 285         .def_trigger    = "",
 286 };
 287
 288 static struct s3c24xx_led_platdata n35_warning_led_pdata = {
 289         .name           = "warning_led",
 290         .flags          = S3C24XX_LEDF_ACTLOW | S3C24XX_LEDF_TRISTATE,
 291         .gpio           = S3C2410_GPD(9),
 292         .def_trigger    = "",
 293 };
 294
 295 static struct platform_device n30_blue_led = {
 296         .name           = "s3c24xx_led",
 297         .id             = 1,
 298         .dev            = {
 299                 .platform_data  = &n30_blue_led_pdata,
 300         },
 301 };
 302
 303 static struct platform_device n35_blue_led = {
 304         .name           = "s3c24xx_led",
 305         .id             = 1,
 306         .dev            = {
 307                 .platform_data  = &n35_blue_led_pdata,
 308         },
 309 };
 310
 311 static struct platform_device n30_warning_led = {
 312         .name           = "s3c24xx_led",
 313         .id             = 2,
 314         .dev            = {
 315                 .platform_data  = &n30_warning_led_pdata,
 316         },
 317 };
 318
 319 static struct platform_device n35_warning_led = {
 320         .name           = "s3c24xx_led",
 321         .id             = 2,
 322         .dev            = {
 323                 .platform_data  = &n35_warning_led_pdata,
 324         },
 325 };
 326
 327 static struct s3c2410fb_display n30_display __initdata = {
 328         .type           = S3C2410_LCDCON1_TFT,
 329         .width          = 240,
 330         .height         = 320,
 331         .pixclock       = 170000,
 332
 333         .xres           = 240,
 334         .yres           = 320,
 335         .bpp            = 16,
 336         .left_margin    = 3,
 337         .right_margin   = 40,
 338         .hsync_len      = 40,
 339         .upper_margin   = 2,
 340         .lower_margin   = 3,
 341         .vsync_len      = 2,
 342
 343         .lcdcon5 = S3C2410_LCDCON5_INVVLINE | S3C2410_LCDCON5_INVVFRAME,
 344 };
 345
 346 static struct s3c2410fb_mach_info n30_fb_info __initdata = {
 347         .displays       = &n30_display,
 348         .num_displays   = 1,
 349         .default_display = 0,
 350         .lpcsel         = 0x06,
 351 };
 352
 353 static struct platform_device *n30_devices[] __initdata = {
 354         &s3c_device_lcd,
 355         &s3c_device_wdt,
 356         &s3c_device_i2c0,
 357         &s3c_device_iis,
 358         &s3c_device_ohci,
 359         &s3c_device_rtc,
 360         &s3c_device_usbgadget,
 361         &n30_button_device,
 362         &n30_blue_led,
 363         &n30_warning_led,
 364 };
 365
 366 static struct platform_device *n35_devices[] __initdata = {
 367         &s3c_device_lcd,
 368         &s3c_device_wdt,
 369         &s3c_device_i2c0,
 370         &s3c_device_iis,
 371         &s3c_device_rtc,
 372         &s3c_device_usbgadget,
 373         &n35_button_device,
 374         &n35_blue_led,
 375         &n35_warning_led,
 376 };
 377
 378 static struct s3c2410_platform_i2c __initdata n30_i2ccfg = {
 379         .flags          = 0,
 380         .slave_addr     = 0x10,
 381         .frequency      = 10*1000,
 382 };
 383
 384 /* Lots of hardcoded stuff, but it sets up the hardware in a useful
 385  * state so that we can boot Linux directly from flash. */
 386 static void __init n30_hwinit(void)
 387 {
 388         /* GPA0-11 special functions -- unknown what they do
 389          * GPA12 N30 special function -- unknown what it does
 390          *       N35/PiN output -- unknown what it does
 391          *
 392          * A12 is nGCS1 on the N30 and an output on the N35/PiN.  I
 393          * don't think it does anything useful on the N30, so I ought
 394          * to make it an output there too since it always driven to 0
 395          * as far as I can tell. */
 396         if (machine_is_n30())
 397                 __raw_writel(0x007fffff, S3C2410_GPACON);
 398         if (machine_is_n35())
 399                 __raw_writel(0x007fefff, S3C2410_GPACON);
 400         __raw_writel(0x00000000, S3C2410_GPADAT);
 401
 402         /* GPB0 TOUT0 backlight level
 403          * GPB1 output 1=backlight on
 404          * GPB2 output IrDA enable 0=transceiver enabled, 1=disabled
 405          * GPB3 output USB D+ pull up 0=disabled, 1=enabled
 406          * GPB4 N30 output -- unknown function
 407          *      N30/PiN GPS control 0=GPS enabled, 1=GPS disabled
 408          * GPB5 output -- unknown function
 409          * GPB6 input -- unknown function
 410          * GPB7 output -- unknown function
 411          * GPB8 output -- probably LCD driver enable
 412          * GPB9 output -- probably LCD VSYNC driver enable
 413          * GPB10 output -- probably LCD HSYNC driver enable
 414          */
 415         __raw_writel(0x00154556, S3C2410_GPBCON);
 416         __raw_writel(0x00000750, S3C2410_GPBDAT);
 417         __raw_writel(0x00000073, S3C2410_GPBUP);
 418
 419         /* GPC0 input RS232 DCD/DSR/RI
 420          * GPC1 LCD
 421          * GPC2 output RS232 DTR?
 422          * GPC3 input RS232 DCD/DSR/RI
 423          * GPC4 LCD
 424          * GPC5 output 0=NAND write enabled, 1=NAND write protect
 425          * GPC6 input -- unknown function
 426          * GPC7 input charger status 0=charger connected
 427          *      this input can be triggered by power on the USB device
 428          *      port too, but will go back to disconnected soon after.
 429          * GPC8 N30/N35 output -- unknown function, always driven to 1
 430          *      PiN input -- unknown function, always read as 1
 431          *      Make it an input with a pull up for all models.
 432          * GPC9-15 LCD
 433          */
 434         __raw_writel(0xaaa80618, S3C2410_GPCCON);
 435         __raw_writel(0x0000014c, S3C2410_GPCDAT);
 436         __raw_writel(0x0000fef2, S3C2410_GPCUP);
 437
 438         /* GPD0 input -- unknown function
 439          * GPD1-D7 LCD
 440          * GPD8 N30 output -- unknown function
 441          *      N35/PiN output 1=GPS LED on
 442          * GPD9 output 0=power led blinks red, 1=normal power led function
 443          * GPD10 output -- unknown function
 444          * GPD11-15 LCD drivers
 445          */
 446         __raw_writel(0xaa95aaa4, S3C2410_GPDCON);
 447         __raw_writel(0x00000601, S3C2410_GPDDAT);
 448         __raw_writel(0x0000fbfe, S3C2410_GPDUP);
 449
 450         /* GPE0-4 I2S audio bus
 451          * GPE5-10 SD/MMC bus
 452          * E11-13 outputs -- unknown function, probably power management
 453          * E14-15 I2C bus connected to the battery controller
 454          */
 455         __raw_writel(0xa56aaaaa, S3C2410_GPECON);
 456         __raw_writel(0x0000efc5, S3C2410_GPEDAT);
 457         __raw_writel(0x0000f81f, S3C2410_GPEUP);
 458
 459         /* GPF0  input 0=power button pressed
 460          * GPF1  input SD/MMC switch 0=card present
 461          * GPF2  N30 1=reset button pressed (inverted compared to the rest)
 462          *       N35/PiN 0=reset button pressed
 463          * GPF3  N30/PiN input -- unknown function
 464          *       N35 input GPS antenna position, 0=antenna closed, 1=open
 465          * GPF4  input 0=button 4 pressed
 466          * GPF5  input 0=button 3 pressed
 467          * GPF6  input 0=button 2 pressed
 468          * GPF7  input 0=button 1 pressed
 469          */
 470         __raw_writel(0x0000aaaa, S3C2410_GPFCON);
 471         __raw_writel(0x00000000, S3C2410_GPFDAT);
 472         __raw_writel(0x000000ff, S3C2410_GPFUP);
 473
 474         /* GPG0  input RS232 DCD/DSR/RI
 475          * GPG1  input 1=USB gadget port has power from a host
 476          * GPG2  N30 input -- unknown function
 477          *       N35/PiN input 0=headphones plugged in, 1=not plugged in
 478          * GPG3  N30 output -- unknown function
 479          *       N35/PiN input with unknown function
 480          * GPG4  N30 output 0=MMC enabled, 1=MMC disabled
 481          * GPG5  N30 output 0=BlueTooth chip disabled, 1=enabled
 482          *       N35/PiN input joystick right
 483          * GPG6  N30 output 0=blue led on, 1=off
 484          *       N35/PiN input joystick left
 485          * GPG7  input 0=thumbwheel pressed
 486          * GPG8  input 0=thumbwheel down
 487          * GPG9  input 0=thumbwheel up
 488          * GPG10 input SD/MMC write protect switch
 489          * GPG11 N30 input -- unknown function
 490          *       N35 output 0=GPS antenna powered, 1=not powered
 491          *       PiN output -- unknown function
 492          * GPG12-15 touch screen functions
 493          *
 494          * The pullups differ between the models, so enable all
 495          * pullups that are enabled on any of the models.
 496          */
 497         if (machine_is_n30())
 498                 __raw_writel(0xff0a956a, S3C2410_GPGCON);
 499         if (machine_is_n35())
 500                 __raw_writel(0xff4aa92a, S3C2410_GPGCON);
 501         __raw_writel(0x0000e800, S3C2410_GPGDAT);
 502         __raw_writel(0x0000f86f, S3C2410_GPGUP);
 503
 504         /* GPH0/1/2/3 RS232 serial port
 505          * GPH4/5 IrDA serial port
 506          * GPH6/7  N30 BlueTooth serial port
 507          *         N35/PiN GPS receiver
 508          * GPH8 input -- unknown function
 509          * GPH9 CLKOUT0 HCLK -- unknown use
 510          * GPH10 CLKOUT1 FCLK -- unknown use
 511          *
 512          * The pull ups for H6/H7 are enabled on N30 but not on the
 513          * N35/PiN.  I suppose is useful for a budget model of the N30
 514          * with no bluetooh.  It doesn't hurt to have the pull ups
 515          * enabled on the N35, so leave them enabled for all models.
 516          */
 517         __raw_writel(0x0028aaaa, S3C2410_GPHCON);
 518         __raw_writel(0x000005ef, S3C2410_GPHDAT);
 519         __raw_writel(0x0000063f, S3C2410_GPHUP);
 520 }
 521
 522 static void __init n30_map_io(void)
 523 {
 524         s3c24xx_init_io(n30_iodesc, ARRAY_SIZE(n30_iodesc));
 525         n30_hwinit();
 526         s3c24xx_init_clocks(0);
 527         s3c24xx_init_uarts(n30_uartcfgs, ARRAY_SIZE(n30_uartcfgs));
 528 }
 529
 530 static void __init n30_init_irq(void)
 531 {
 532         s3c24xx_init_irq();
 533 }
 534
 535 /* GPB3 is the line that controls the pull-up for the USB D+ line */
 536
 537 static void __init n30_init(void)
 538 {
 539         s3c24xx_fb_set_platdata(&n30_fb_info);
 540         s3c24xx_udc_set_platdata(&n30_udc_cfg);
 541         s3c_i2c0_set_platdata(&n30_i2ccfg);
 542
 543         /* Turn off suspend on both USB ports, and switch the
 544          * selectable USB port to USB device mode. */
 545
 546         s3c2410_modify_misccr(S3C2410_MISCCR_USBHOST |
 547                               S3C2410_MISCCR_USBSUSPND0 |
 548                               S3C2410_MISCCR_USBSUSPND1, 0x0);
 549
 550         if (machine_is_n30()) {
 551                 /* Turn off suspend on both USB ports, and switch the
 552                  * selectable USB port to USB device mode. */
 553                 s3c2410_modify_misccr(S3C2410_MISCCR_USBHOST |
 554                                       S3C2410_MISCCR_USBSUSPND0 |
 555                                       S3C2410_MISCCR_USBSUSPND1, 0x0);
 556
 557                 platform_add_devices(n30_devices, ARRAY_SIZE(n30_devices));
 558         }
 559
 560         if (machine_is_n35()) {
 561                 /* Turn off suspend and switch the selectable USB port
 562                  * to USB device mode.  Turn on suspend for the host
 563                  * port since it is not connected on the N35.
 564                  *
 565                  * Actually, the host port is available at some pads
 566                  * on the back of the device, so it would actually be
 567                  * possible to add a USB device inside the N35 if you
 568                  * are willing to do some hardware modifications. */
 569                 s3c2410_modify_misccr(S3C2410_MISCCR_USBHOST |
 570                                       S3C2410_MISCCR_USBSUSPND0 |
 571                                       S3C2410_MISCCR_USBSUSPND1,
 572                                       S3C2410_MISCCR_USBSUSPND0);
 573
 574                 platform_add_devices(n35_devices, ARRAY_SIZE(n35_devices));
 575         }
 576 }
 577
 578 MACHINE_START(N30, "Acer-N30")
 579         /* Maintainer: Christer Weinigel <christer@weinigel.se>,
 580                                 Ben Dooks <ben-linux@fluff.org>
 581         */
 582         .phys_io        = S3C2410_PA_UART,
 583         .io_pg_offst    = (((u32)S3C24XX_VA_UART) >> 18) & 0xfffc,
 584         .boot_params    = S3C2410_SDRAM_PA + 0x100,
 585         .timer          = &s3c24xx_timer,
 586         .init_machine   = n30_init,
 587         .init_irq       = n30_init_irq,
 588         .map_io         = n30_map_io,
 589 MACHINE_END
 590
 591 MACHINE_START(N35, "Acer-N35")
 592         /* Maintainer: Christer Weinigel <christer@weinigel.se>
 593         */
 594         .phys_io        = S3C2410_PA_UART,
 595         .io_pg_offst    = (((u32)S3C24XX_VA_UART) >> 18) & 0xfffc,
 596         .boot_params    = S3C2410_SDRAM_PA + 0x100,
 597         .timer          = &s3c24xx_timer,
 598         .init_machine   = n30_init,
 599         .init_irq       = n30_init_irq,
 600         .map_io         = n30_map_io,
 601 MACHINE_END