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/serial_s3c.h>
  28 #include <linux/timer.h>
  29 #include <linux/io.h>
  30 #include <linux/mmc/host.h>
  31
  32 #include <mach/hardware.h>
  33 #include <asm/irq.h>
  34 #include <asm/mach-types.h>
  35
  36 #include <mach/fb.h>
  37 #include <linux/platform_data/leds-s3c24xx.h>
  38 #include <mach/regs-gpio.h>
  39 #include <mach/regs-lcd.h>
  40 #include <mach/gpio-samsung.h>
  41
  42 #include <asm/mach/arch.h>
  43 #include <asm/mach/irq.h>
  44 #include <asm/mach/map.h>
  45
  46 #include <linux/platform_data/i2c-s3c2410.h>
  47
  48 #include <plat/clock.h>
  49 #include <plat/cpu.h>
  50 #include <plat/devs.h>
  51 #include <linux/platform_data/mmc-s3cmci.h>
  52 #include <linux/platform_data/usb-s3c2410_udc.h>
  53 #include <plat/samsung-time.h>
  54
  55 #include "common.h"
  56
  57 static struct map_desc n30_iodesc[] __initdata = {
  58         /* nothing here yet */
  59 };
  60
  61 static struct s3c2410_uartcfg n30_uartcfgs[] = {
  62         /* Normal serial port */
  63         [0] = {
  64                 .hwport      = 0,
  65                 .flags       = 0,
  66                 .ucon        = 0x2c5,
  67                 .ulcon       = 0x03,
  68                 .ufcon       = 0x51,
  69         },
  70         /* IR port */
  71         [1] = {
  72                 .hwport      = 1,
  73                 .flags       = 0,
  74                 .uart_flags  = UPF_CONS_FLOW,
  75                 .ucon        = 0x2c5,
  76                 .ulcon       = 0x43,
  77                 .ufcon       = 0x51,
  78         },
  79         /* On the N30 the bluetooth controller is connected here.
  80          * On the N35 and variants the GPS receiver is connected here. */
  81         [2] = {
  82                 .hwport      = 2,
  83                 .flags       = 0,
  84                 .ucon        = 0x2c5,
  85                 .ulcon       = 0x03,
  86                 .ufcon       = 0x51,
  87         },
  88 };
  89
  90 static struct s3c2410_udc_mach_info n30_udc_cfg __initdata = {
  91         .vbus_pin               = S3C2410_GPG(1),
  92         .vbus_pin_inverted      = 0,
  93         .pullup_pin             = S3C2410_GPB(3),
  94 };
  95
  96 static struct gpio_keys_button n30_buttons[] = {
  97         {
  98                 .gpio           = S3C2410_GPF(0),
  99                 .code           = KEY_POWER,
 100                 .desc           = "Power",
 101                 .active_low     = 0,
 102         },
 103         {
 104                 .gpio           = S3C2410_GPG(9),
 105                 .code           = KEY_UP,
 106                 .desc           = "Thumbwheel Up",
 107                 .active_low     = 0,
 108         },
 109         {
 110                 .gpio           = S3C2410_GPG(8),
 111                 .code           = KEY_DOWN,
 112                 .desc           = "Thumbwheel Down",
 113                 .active_low     = 0,
 114         },
 115         {
 116                 .gpio           = S3C2410_GPG(7),
 117                 .code           = KEY_ENTER,
 118                 .desc           = "Thumbwheel Press",
 119                 .active_low     = 0,
 120         },
 121         {
 122                 .gpio           = S3C2410_GPF(7),
 123                 .code           = KEY_HOMEPAGE,
 124                 .desc           = "Home",
 125                 .active_low     = 0,
 126         },
 127         {
 128                 .gpio           = S3C2410_GPF(6),
 129                 .code           = KEY_CALENDAR,
 130                 .desc           = "Calendar",
 131                 .active_low     = 0,
 132         },
 133         {
 134                 .gpio           = S3C2410_GPF(5),
 135                 .code           = KEY_ADDRESSBOOK,
 136                 .desc           = "Contacts",
 137                 .active_low     = 0,
 138         },
 139         {
 140                 .gpio           = S3C2410_GPF(4),
 141                 .code           = KEY_MAIL,
 142                 .desc           = "Mail",
 143                 .active_low     = 0,
 144         },
 145 };
 146
 147 static struct gpio_keys_platform_data n30_button_data = {
 148         .buttons        = n30_buttons,
 149         .nbuttons       = ARRAY_SIZE(n30_buttons),
 150 };
 151
 152 static struct platform_device n30_button_device = {
 153         .name           = "gpio-keys",
 154         .id             = -1,
 155         .dev            = {
 156                 .platform_data  = &n30_button_data,
 157         }
 158 };
 159
 160 static struct gpio_keys_button n35_buttons[] = {
 161         {
 162                 .gpio           = S3C2410_GPF(0),
 163                 .code           = KEY_POWER,
 164                 .type           = EV_PWR,
 165                 .desc           = "Power",
 166                 .active_low     = 0,
 167                 .wakeup         = 1,
 168         },
 169         {
 170                 .gpio           = S3C2410_GPG(9),
 171                 .code           = KEY_UP,
 172                 .desc           = "Joystick Up",
 173                 .active_low     = 0,
 174         },
 175         {
 176                 .gpio           = S3C2410_GPG(8),
 177                 .code           = KEY_DOWN,
 178                 .desc           = "Joystick Down",
 179                 .active_low     = 0,
 180         },
 181         {
 182                 .gpio           = S3C2410_GPG(6),
 183                 .code           = KEY_DOWN,
 184                 .desc           = "Joystick Left",
 185                 .active_low     = 0,
 186         },
 187         {
 188                 .gpio           = S3C2410_GPG(5),
 189                 .code           = KEY_DOWN,
 190                 .desc           = "Joystick Right",
 191                 .active_low     = 0,
 192         },
 193         {
 194                 .gpio           = S3C2410_GPG(7),
 195                 .code           = KEY_ENTER,
 196                 .desc           = "Joystick Press",
 197                 .active_low     = 0,
 198         },
 199         {
 200                 .gpio           = S3C2410_GPF(7),
 201                 .code           = KEY_HOMEPAGE,
 202                 .desc           = "Home",
 203                 .active_low     = 0,
 204         },
 205         {
 206                 .gpio           = S3C2410_GPF(6),
 207                 .code           = KEY_CALENDAR,
 208                 .desc           = "Calendar",
 209                 .active_low     = 0,
 210         },
 211         {
 212                 .gpio           = S3C2410_GPF(5),
 213                 .code           = KEY_ADDRESSBOOK,
 214                 .desc           = "Contacts",
 215                 .active_low     = 0,
 216         },
 217         {
 218                 .gpio           = S3C2410_GPF(4),
 219                 .code           = KEY_MAIL,
 220                 .desc           = "Mail",
 221                 .active_low     = 0,
 222         },
 223         {
 224                 .gpio           = S3C2410_GPF(3),
 225                 .code           = SW_RADIO,
 226                 .desc           = "GPS Antenna",
 227                 .active_low     = 0,
 228         },
 229         {
 230                 .gpio           = S3C2410_GPG(2),
 231                 .code           = SW_HEADPHONE_INSERT,
 232                 .desc           = "Headphone",
 233                 .active_low     = 0,
 234         },
 235 };
 236
 237 static struct gpio_keys_platform_data n35_button_data = {
 238         .buttons        = n35_buttons,
 239         .nbuttons       = ARRAY_SIZE(n35_buttons),
 240 };
 241
 242 static struct platform_device n35_button_device = {
 243         .name           = "gpio-keys",
 244         .id             = -1,
 245         .num_resources  = 0,
 246         .dev            = {
 247                 .platform_data  = &n35_button_data,
 248         }
 249 };
 250
 251 /* This is the bluetooth LED on the device. */
 252 static struct s3c24xx_led_platdata n30_blue_led_pdata = {
 253         .name           = "blue_led",
 254         .gpio           = S3C2410_GPG(6),
 255         .def_trigger    = "",
 256 };
 257
 258 /* This is the blue LED on the device. Originally used to indicate GPS activity
 259  * by flashing. */
 260 static struct s3c24xx_led_platdata n35_blue_led_pdata = {
 261         .name           = "blue_led",
 262         .gpio           = S3C2410_GPD(8),
 263         .def_trigger    = "",
 264 };
 265
 266 /* This LED is driven by the battery microcontroller, and is blinking
 267  * red, blinking green or solid green when the battery is low,
 268  * charging or full respectively.  By driving GPD9 low, it's possible
 269  * to force the LED to blink red, so call that warning LED.  */
 270 static struct s3c24xx_led_platdata n30_warning_led_pdata = {
 271         .name           = "warning_led",
 272         .flags          = S3C24XX_LEDF_ACTLOW,
 273         .gpio           = S3C2410_GPD(9),
 274         .def_trigger    = "",
 275 };
 276
 277 static struct s3c24xx_led_platdata n35_warning_led_pdata = {
 278         .name           = "warning_led",
 279         .flags          = S3C24XX_LEDF_ACTLOW | S3C24XX_LEDF_TRISTATE,
 280         .gpio           = S3C2410_GPD(9),
 281         .def_trigger    = "",
 282 };
 283
 284 static struct platform_device n30_blue_led = {
 285         .name           = "s3c24xx_led",
 286         .id             = 1,
 287         .dev            = {
 288                 .platform_data  = &n30_blue_led_pdata,
 289         },
 290 };
 291
 292 static struct platform_device n35_blue_led = {
 293         .name           = "s3c24xx_led",
 294         .id             = 1,
 295         .dev            = {
 296                 .platform_data  = &n35_blue_led_pdata,
 297         },
 298 };
 299
 300 static struct platform_device n30_warning_led = {
 301         .name           = "s3c24xx_led",
 302         .id             = 2,
 303         .dev            = {
 304                 .platform_data  = &n30_warning_led_pdata,
 305         },
 306 };
 307
 308 static struct platform_device n35_warning_led = {
 309         .name           = "s3c24xx_led",
 310         .id             = 2,
 311         .dev            = {
 312                 .platform_data  = &n35_warning_led_pdata,
 313         },
 314 };
 315
 316 static struct s3c2410fb_display n30_display __initdata = {
 317         .type           = S3C2410_LCDCON1_TFT,
 318         .width          = 240,
 319         .height         = 320,
 320         .pixclock       = 170000,
 321
 322         .xres           = 240,
 323         .yres           = 320,
 324         .bpp            = 16,
 325         .left_margin    = 3,
 326         .right_margin   = 40,
 327         .hsync_len      = 40,
 328         .upper_margin   = 2,
 329         .lower_margin   = 3,
 330         .vsync_len      = 2,
 331
 332         .lcdcon5 = S3C2410_LCDCON5_INVVLINE | S3C2410_LCDCON5_INVVFRAME,
 333 };
 334
 335 static struct s3c2410fb_mach_info n30_fb_info __initdata = {
 336         .displays       = &n30_display,
 337         .num_displays   = 1,
 338         .default_display = 0,
 339         .lpcsel         = 0x06,
 340 };
 341
 342 static void n30_sdi_set_power(unsigned char power_mode, unsigned short vdd)
 343 {
 344         switch (power_mode) {
 345         case MMC_POWER_ON:
 346         case MMC_POWER_UP:
 347                 gpio_set_value(S3C2410_GPG(4), 1);
 348                 break;
 349         case MMC_POWER_OFF:
 350         default:
 351                 gpio_set_value(S3C2410_GPG(4), 0);
 352                 break;
 353         }
 354 }
 355
 356 static struct s3c24xx_mci_pdata n30_mci_cfg __initdata = {
 357         .gpio_detect    = S3C2410_GPF(1),
 358         .gpio_wprotect  = S3C2410_GPG(10),
 359         .ocr_avail      = MMC_VDD_32_33,
 360         .set_power      = n30_sdi_set_power,
 361 };
 362
 363 static struct platform_device *n30_devices[] __initdata = {
 364         &s3c_device_lcd,
 365         &s3c_device_wdt,
 366         &s3c_device_i2c0,
 367         &s3c_device_iis,
 368         &s3c_device_ohci,
 369         &s3c_device_rtc,
 370         &s3c_device_usbgadget,
 371         &s3c_device_sdi,
 372         &n30_button_device,
 373         &n30_blue_led,
 374         &n30_warning_led,
 375 };
 376
 377 static struct platform_device *n35_devices[] __initdata = {
 378         &s3c_device_lcd,
 379         &s3c_device_wdt,
 380         &s3c_device_i2c0,
 381         &s3c_device_iis,
 382         &s3c_device_rtc,
 383         &s3c_device_usbgadget,
 384         &s3c_device_sdi,
 385         &n35_button_device,
 386         &n35_blue_led,
 387         &n35_warning_led,
 388 };
 389
 390 static struct s3c2410_platform_i2c __initdata n30_i2ccfg = {
 391         .flags          = 0,
 392         .slave_addr     = 0x10,
 393         .frequency      = 10*1000,
 394 };
 395
 396 /* Lots of hardcoded stuff, but it sets up the hardware in a useful
 397  * state so that we can boot Linux directly from flash. */
 398 static void __init n30_hwinit(void)
 399 {
 400         /* GPA0-11 special functions -- unknown what they do
 401          * GPA12 N30 special function -- unknown what it does
 402          *       N35/PiN output -- unknown what it does
 403          *
 404          * A12 is nGCS1 on the N30 and an output on the N35/PiN.  I
 405          * don't think it does anything useful on the N30, so I ought
 406          * to make it an output there too since it always driven to 0
 407          * as far as I can tell. */
 408         if (machine_is_n30())
 409                 __raw_writel(0x007fffff, S3C2410_GPACON);
 410         if (machine_is_n35())
 411                 __raw_writel(0x007fefff, S3C2410_GPACON);
 412         __raw_writel(0x00000000, S3C2410_GPADAT);
 413
 414         /* GPB0 TOUT0 backlight level
 415          * GPB1 output 1=backlight on
 416          * GPB2 output IrDA enable 0=transceiver enabled, 1=disabled
 417          * GPB3 output USB D+ pull up 0=disabled, 1=enabled
 418          * GPB4 N30 output -- unknown function
 419          *      N30/PiN GPS control 0=GPS enabled, 1=GPS disabled
 420          * GPB5 output -- unknown function
 421          * GPB6 input -- unknown function
 422          * GPB7 output -- unknown function
 423          * GPB8 output -- probably LCD driver enable
 424          * GPB9 output -- probably LCD VSYNC driver enable
 425          * GPB10 output -- probably LCD HSYNC driver enable
 426          */
 427         __raw_writel(0x00154556, S3C2410_GPBCON);
 428         __raw_writel(0x00000750, S3C2410_GPBDAT);
 429         __raw_writel(0x00000073, S3C2410_GPBUP);
 430
 431         /* GPC0 input RS232 DCD/DSR/RI
 432          * GPC1 LCD
 433          * GPC2 output RS232 DTR?
 434          * GPC3 input RS232 DCD/DSR/RI
 435          * GPC4 LCD
 436          * GPC5 output 0=NAND write enabled, 1=NAND write protect
 437          * GPC6 input -- unknown function
 438          * GPC7 input charger status 0=charger connected
 439          *      this input can be triggered by power on the USB device
 440          *      port too, but will go back to disconnected soon after.
 441          * GPC8 N30/N35 output -- unknown function, always driven to 1
 442          *      PiN input -- unknown function, always read as 1
 443          *      Make it an input with a pull up for all models.
 444          * GPC9-15 LCD
 445          */
 446         __raw_writel(0xaaa80618, S3C2410_GPCCON);
 447         __raw_writel(0x0000014c, S3C2410_GPCDAT);
 448         __raw_writel(0x0000fef2, S3C2410_GPCUP);
 449
 450         /* GPD0 input -- unknown function
 451          * GPD1-D7 LCD
 452          * GPD8 N30 output -- unknown function
 453          *      N35/PiN output 1=GPS LED on
 454          * GPD9 output 0=power led blinks red, 1=normal power led function
 455          * GPD10 output -- unknown function
 456          * GPD11-15 LCD drivers
 457          */
 458         __raw_writel(0xaa95aaa4, S3C2410_GPDCON);
 459         __raw_writel(0x00000601, S3C2410_GPDDAT);
 460         __raw_writel(0x0000fbfe, S3C2410_GPDUP);
 461
 462         /* GPE0-4 I2S audio bus
 463          * GPE5-10 SD/MMC bus
 464          * E11-13 outputs -- unknown function, probably power management
 465          * E14-15 I2C bus connected to the battery controller
 466          */
 467         __raw_writel(0xa56aaaaa, S3C2410_GPECON);
 468         __raw_writel(0x0000efc5, S3C2410_GPEDAT);
 469         __raw_writel(0x0000f81f, S3C2410_GPEUP);
 470
 471         /* GPF0  input 0=power button pressed
 472          * GPF1  input SD/MMC switch 0=card present
 473          * GPF2  N30 1=reset button pressed (inverted compared to the rest)
 474          *       N35/PiN 0=reset button pressed
 475          * GPF3  N30/PiN input -- unknown function
 476          *       N35 input GPS antenna position, 0=antenna closed, 1=open
 477          * GPF4  input 0=button 4 pressed
 478          * GPF5  input 0=button 3 pressed
 479          * GPF6  input 0=button 2 pressed
 480          * GPF7  input 0=button 1 pressed
 481          */
 482         __raw_writel(0x0000aaaa, S3C2410_GPFCON);
 483         __raw_writel(0x00000000, S3C2410_GPFDAT);
 484         __raw_writel(0x000000ff, S3C2410_GPFUP);
 485
 486         /* GPG0  input RS232 DCD/DSR/RI
 487          * GPG1  input 1=USB gadget port has power from a host
 488          * GPG2  N30 input -- unknown function
 489          *       N35/PiN input 0=headphones plugged in, 1=not plugged in
 490          * GPG3  N30 output -- unknown function
 491          *       N35/PiN input with unknown function
 492          * GPG4  N30 output 0=MMC enabled, 1=MMC disabled
 493          * GPG5  N30 output 0=BlueTooth chip disabled, 1=enabled
 494          *       N35/PiN input joystick right
 495          * GPG6  N30 output 0=blue led on, 1=off
 496          *       N35/PiN input joystick left
 497          * GPG7  input 0=thumbwheel pressed
 498          * GPG8  input 0=thumbwheel down
 499          * GPG9  input 0=thumbwheel up
 500          * GPG10 input SD/MMC write protect switch
 501          * GPG11 N30 input -- unknown function
 502          *       N35 output 0=GPS antenna powered, 1=not powered
 503          *       PiN output -- unknown function
 504          * GPG12-15 touch screen functions
 505          *
 506          * The pullups differ between the models, so enable all
 507          * pullups that are enabled on any of the models.
 508          */
 509         if (machine_is_n30())
 510                 __raw_writel(0xff0a956a, S3C2410_GPGCON);
 511         if (machine_is_n35())
 512                 __raw_writel(0xff4aa92a, S3C2410_GPGCON);
 513         __raw_writel(0x0000e800, S3C2410_GPGDAT);
 514         __raw_writel(0x0000f86f, S3C2410_GPGUP);
 515
 516         /* GPH0/1/2/3 RS232 serial port
 517          * GPH4/5 IrDA serial port
 518          * GPH6/7  N30 BlueTooth serial port
 519          *         N35/PiN GPS receiver
 520          * GPH8 input -- unknown function
 521          * GPH9 CLKOUT0 HCLK -- unknown use
 522          * GPH10 CLKOUT1 FCLK -- unknown use
 523          *
 524          * The pull ups for H6/H7 are enabled on N30 but not on the
 525          * N35/PiN.  I suppose is useful for a budget model of the N30
 526          * with no bluetooh.  It doesn't hurt to have the pull ups
 527          * enabled on the N35, so leave them enabled for all models.
 528          */
 529         __raw_writel(0x0028aaaa, S3C2410_GPHCON);
 530         __raw_writel(0x000005ef, S3C2410_GPHDAT);
 531         __raw_writel(0x0000063f, S3C2410_GPHUP);
 532 }
 533
 534 static void __init n30_map_io(void)
 535 {
 536         s3c24xx_init_io(n30_iodesc, ARRAY_SIZE(n30_iodesc));
 537         n30_hwinit();
 538         s3c24xx_init_clocks(0);
 539         s3c24xx_init_uarts(n30_uartcfgs, ARRAY_SIZE(n30_uartcfgs));
 540         samsung_set_timer_source(SAMSUNG_PWM3, SAMSUNG_PWM4);
 541 }
 542
 543 /* GPB3 is the line that controls the pull-up for the USB D+ line */
 544
 545 static void __init n30_init(void)
 546 {
 547         WARN_ON(gpio_request(S3C2410_GPG(4), "mmc power"));
 548
 549         s3c24xx_fb_set_platdata(&n30_fb_info);
 550         s3c24xx_udc_set_platdata(&n30_udc_cfg);
 551         s3c24xx_mci_set_platdata(&n30_mci_cfg);
 552         s3c_i2c0_set_platdata(&n30_i2ccfg);
 553
 554         /* Turn off suspend on both USB ports, and switch the
 555          * selectable USB port to USB device mode. */
 556
 557         s3c2410_modify_misccr(S3C2410_MISCCR_USBHOST |
 558                               S3C2410_MISCCR_USBSUSPND0 |
 559                               S3C2410_MISCCR_USBSUSPND1, 0x0);
 560
 561         if (machine_is_n30()) {
 562                 /* Turn off suspend on both USB ports, and switch the
 563                  * selectable USB port to USB device mode. */
 564                 s3c2410_modify_misccr(S3C2410_MISCCR_USBHOST |
 565                                       S3C2410_MISCCR_USBSUSPND0 |
 566                                       S3C2410_MISCCR_USBSUSPND1, 0x0);
 567
 568                 platform_add_devices(n30_devices, ARRAY_SIZE(n30_devices));
 569         }
 570
 571         if (machine_is_n35()) {
 572                 /* Turn off suspend and switch the selectable USB port
 573                  * to USB device mode.  Turn on suspend for the host
 574                  * port since it is not connected on the N35.
 575                  *
 576                  * Actually, the host port is available at some pads
 577                  * on the back of the device, so it would actually be
 578                  * possible to add a USB device inside the N35 if you
 579                  * are willing to do some hardware modifications. */
 580                 s3c2410_modify_misccr(S3C2410_MISCCR_USBHOST |
 581                                       S3C2410_MISCCR_USBSUSPND0 |
 582                                       S3C2410_MISCCR_USBSUSPND1,
 583                                       S3C2410_MISCCR_USBSUSPND0);
 584
 585                 platform_add_devices(n35_devices, ARRAY_SIZE(n35_devices));
 586         }
 587 }
 588
 589 MACHINE_START(N30, "Acer-N30")
 590         /* Maintainer: Christer Weinigel <christer@weinigel.se>,
 591                                 Ben Dooks <ben-linux@fluff.org>
 592         */
 593         .atag_offset    = 0x100,
 594         .init_time      = samsung_timer_init,
 595         .init_machine   = n30_init,
 596         .init_irq       = s3c2410_init_irq,
 597         .map_io         = n30_map_io,
 598         .restart        = s3c2410_restart,
 599 MACHINE_END
 600
 601 MACHINE_START(N35, "Acer-N35")
 602         /* Maintainer: Christer Weinigel <christer@weinigel.se>
 603         */
 604         .atag_offset    = 0x100,
 605         .init_time      = samsung_timer_init,
 606         .init_machine   = n30_init,
 607         .init_irq       = s3c2410_init_irq,
 608         .map_io         = n30_map_io,
 609         .restart        = s3c2410_restart,
 610 MACHINE_END