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/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 #include <plat/samsung-time.h>
  53
  54 #include "common.h"
  55
  56 static struct map_desc n30_iodesc[] __initdata = {
  57         /* nothing here yet */
  58 };
  59
  60 static struct s3c2410_uartcfg n30_uartcfgs[] = {
  61         /* Normal serial port */
  62         [0] = {
  63                 .hwport      = 0,
  64                 .flags       = 0,
  65                 .ucon        = 0x2c5,
  66                 .ulcon       = 0x03,
  67                 .ufcon       = 0x51,
  68         },
  69         /* IR port */
  70         [1] = {
  71                 .hwport      = 1,
  72                 .flags       = 0,
  73                 .uart_flags  = UPF_CONS_FLOW,
  74                 .ucon        = 0x2c5,
  75                 .ulcon       = 0x43,
  76                 .ufcon       = 0x51,
  77         },
  78         /* On the N30 the bluetooth controller is connected here.
  79          * On the N35 and variants the GPS receiver is connected here. */
  80         [2] = {
  81                 .hwport      = 2,
  82                 .flags       = 0,
  83                 .ucon        = 0x2c5,
  84                 .ulcon       = 0x03,
  85                 .ufcon       = 0x51,
  86         },
  87 };
  88
  89 static struct s3c2410_udc_mach_info n30_udc_cfg __initdata = {
  90         .vbus_pin               = S3C2410_GPG(1),
  91         .vbus_pin_inverted      = 0,
  92         .pullup_pin             = S3C2410_GPB(3),
  93 };
  94
  95 static struct gpio_keys_button n30_buttons[] = {
  96         {
  97                 .gpio           = S3C2410_GPF(0),
  98                 .code           = KEY_POWER,
  99                 .desc           = "Power",
 100                 .active_low     = 0,
 101         },
 102         {
 103                 .gpio           = S3C2410_GPG(9),
 104                 .code           = KEY_UP,
 105                 .desc           = "Thumbwheel Up",
 106                 .active_low     = 0,
 107         },
 108         {
 109                 .gpio           = S3C2410_GPG(8),
 110                 .code           = KEY_DOWN,
 111                 .desc           = "Thumbwheel Down",
 112                 .active_low     = 0,
 113         },
 114         {
 115                 .gpio           = S3C2410_GPG(7),
 116                 .code           = KEY_ENTER,
 117                 .desc           = "Thumbwheel Press",
 118                 .active_low     = 0,
 119         },
 120         {
 121                 .gpio           = S3C2410_GPF(7),
 122                 .code           = KEY_HOMEPAGE,
 123                 .desc           = "Home",
 124                 .active_low     = 0,
 125         },
 126         {
 127                 .gpio           = S3C2410_GPF(6),
 128                 .code           = KEY_CALENDAR,
 129                 .desc           = "Calendar",
 130                 .active_low     = 0,
 131         },
 132         {
 133                 .gpio           = S3C2410_GPF(5),
 134                 .code           = KEY_ADDRESSBOOK,
 135                 .desc           = "Contacts",
 136                 .active_low     = 0,
 137         },
 138         {
 139                 .gpio           = S3C2410_GPF(4),
 140                 .code           = KEY_MAIL,
 141                 .desc           = "Mail",
 142                 .active_low     = 0,
 143         },
 144 };
 145
 146 static struct gpio_keys_platform_data n30_button_data = {
 147         .buttons        = n30_buttons,
 148         .nbuttons       = ARRAY_SIZE(n30_buttons),
 149 };
 150
 151 static struct platform_device n30_button_device = {
 152         .name           = "gpio-keys",
 153         .id             = -1,
 154         .dev            = {
 155                 .platform_data  = &n30_button_data,
 156         }
 157 };
 158
 159 static struct gpio_keys_button n35_buttons[] = {
 160         {
 161                 .gpio           = S3C2410_GPF(0),
 162                 .code           = KEY_POWER,
 163                 .type           = EV_PWR,
 164                 .desc           = "Power",
 165                 .active_low     = 0,
 166                 .wakeup         = 1,
 167         },
 168         {
 169                 .gpio           = S3C2410_GPG(9),
 170                 .code           = KEY_UP,
 171                 .desc           = "Joystick Up",
 172                 .active_low     = 0,
 173         },
 174         {
 175                 .gpio           = S3C2410_GPG(8),
 176                 .code           = KEY_DOWN,
 177                 .desc           = "Joystick Down",
 178                 .active_low     = 0,
 179         },
 180         {
 181                 .gpio           = S3C2410_GPG(6),
 182                 .code           = KEY_DOWN,
 183                 .desc           = "Joystick Left",
 184                 .active_low     = 0,
 185         },
 186         {
 187                 .gpio           = S3C2410_GPG(5),
 188                 .code           = KEY_DOWN,
 189                 .desc           = "Joystick Right",
 190                 .active_low     = 0,
 191         },
 192         {
 193                 .gpio           = S3C2410_GPG(7),
 194                 .code           = KEY_ENTER,
 195                 .desc           = "Joystick Press",
 196                 .active_low     = 0,
 197         },
 198         {
 199                 .gpio           = S3C2410_GPF(7),
 200                 .code           = KEY_HOMEPAGE,
 201                 .desc           = "Home",
 202                 .active_low     = 0,
 203         },
 204         {
 205                 .gpio           = S3C2410_GPF(6),
 206                 .code           = KEY_CALENDAR,
 207                 .desc           = "Calendar",
 208                 .active_low     = 0,
 209         },
 210         {
 211                 .gpio           = S3C2410_GPF(5),
 212                 .code           = KEY_ADDRESSBOOK,
 213                 .desc           = "Contacts",
 214                 .active_low     = 0,
 215         },
 216         {
 217                 .gpio           = S3C2410_GPF(4),
 218                 .code           = KEY_MAIL,
 219                 .desc           = "Mail",
 220                 .active_low     = 0,
 221         },
 222         {
 223                 .gpio           = S3C2410_GPF(3),
 224                 .code           = SW_RADIO,
 225                 .desc           = "GPS Antenna",
 226                 .active_low     = 0,
 227         },
 228         {
 229                 .gpio           = S3C2410_GPG(2),
 230                 .code           = SW_HEADPHONE_INSERT,
 231                 .desc           = "Headphone",
 232                 .active_low     = 0,
 233         },
 234 };
 235
 236 static struct gpio_keys_platform_data n35_button_data = {
 237         .buttons        = n35_buttons,
 238         .nbuttons       = ARRAY_SIZE(n35_buttons),
 239 };
 240
 241 static struct platform_device n35_button_device = {
 242         .name           = "gpio-keys",
 243         .id             = -1,
 244         .num_resources  = 0,
 245         .dev            = {
 246                 .platform_data  = &n35_button_data,
 247         }
 248 };
 249
 250 /* This is the bluetooth LED on the device. */
 251 static struct s3c24xx_led_platdata n30_blue_led_pdata = {
 252         .name           = "blue_led",
 253         .gpio           = S3C2410_GPG(6),
 254         .def_trigger    = "",
 255 };
 256
 257 /* This is the blue LED on the device. Originally used to indicate GPS activity
 258  * by flashing. */
 259 static struct s3c24xx_led_platdata n35_blue_led_pdata = {
 260         .name           = "blue_led",
 261         .gpio           = S3C2410_GPD(8),
 262         .def_trigger    = "",
 263 };
 264
 265 /* This LED is driven by the battery microcontroller, and is blinking
 266  * red, blinking green or solid green when the battery is low,
 267  * charging or full respectively.  By driving GPD9 low, it's possible
 268  * to force the LED to blink red, so call that warning LED.  */
 269 static struct s3c24xx_led_platdata n30_warning_led_pdata = {
 270         .name           = "warning_led",
 271         .flags          = S3C24XX_LEDF_ACTLOW,
 272         .gpio           = S3C2410_GPD(9),
 273         .def_trigger    = "",
 274 };
 275
 276 static struct s3c24xx_led_platdata n35_warning_led_pdata = {
 277         .name           = "warning_led",
 278         .flags          = S3C24XX_LEDF_ACTLOW | S3C24XX_LEDF_TRISTATE,
 279         .gpio           = S3C2410_GPD(9),
 280         .def_trigger    = "",
 281 };
 282
 283 static struct platform_device n30_blue_led = {
 284         .name           = "s3c24xx_led",
 285         .id             = 1,
 286         .dev            = {
 287                 .platform_data  = &n30_blue_led_pdata,
 288         },
 289 };
 290
 291 static struct platform_device n35_blue_led = {
 292         .name           = "s3c24xx_led",
 293         .id             = 1,
 294         .dev            = {
 295                 .platform_data  = &n35_blue_led_pdata,
 296         },
 297 };
 298
 299 static struct platform_device n30_warning_led = {
 300         .name           = "s3c24xx_led",
 301         .id             = 2,
 302         .dev            = {
 303                 .platform_data  = &n30_warning_led_pdata,
 304         },
 305 };
 306
 307 static struct platform_device n35_warning_led = {
 308         .name           = "s3c24xx_led",
 309         .id             = 2,
 310         .dev            = {
 311                 .platform_data  = &n35_warning_led_pdata,
 312         },
 313 };
 314
 315 static struct s3c2410fb_display n30_display __initdata = {
 316         .type           = S3C2410_LCDCON1_TFT,
 317         .width          = 240,
 318         .height         = 320,
 319         .pixclock       = 170000,
 320
 321         .xres           = 240,
 322         .yres           = 320,
 323         .bpp            = 16,
 324         .left_margin    = 3,
 325         .right_margin   = 40,
 326         .hsync_len      = 40,
 327         .upper_margin   = 2,
 328         .lower_margin   = 3,
 329         .vsync_len      = 2,
 330
 331         .lcdcon5 = S3C2410_LCDCON5_INVVLINE | S3C2410_LCDCON5_INVVFRAME,
 332 };
 333
 334 static struct s3c2410fb_mach_info n30_fb_info __initdata = {
 335         .displays       = &n30_display,
 336         .num_displays   = 1,
 337         .default_display = 0,
 338         .lpcsel         = 0x06,
 339 };
 340
 341 static void n30_sdi_set_power(unsigned char power_mode, unsigned short vdd)
 342 {
 343         switch (power_mode) {
 344         case MMC_POWER_ON:
 345         case MMC_POWER_UP:
 346                 gpio_set_value(S3C2410_GPG(4), 1);
 347                 break;
 348         case MMC_POWER_OFF:
 349         default:
 350                 gpio_set_value(S3C2410_GPG(4), 0);
 351                 break;
 352         }
 353 }
 354
 355 static struct s3c24xx_mci_pdata n30_mci_cfg __initdata = {
 356         .gpio_detect    = S3C2410_GPF(1),
 357         .gpio_wprotect  = S3C2410_GPG(10),
 358         .ocr_avail      = MMC_VDD_32_33,
 359         .set_power      = n30_sdi_set_power,
 360 };
 361
 362 static struct platform_device *n30_devices[] __initdata = {
 363         &s3c_device_lcd,
 364         &s3c_device_wdt,
 365         &s3c_device_i2c0,
 366         &s3c_device_iis,
 367         &s3c_device_ohci,
 368         &s3c_device_rtc,
 369         &s3c_device_usbgadget,
 370         &s3c_device_sdi,
 371         &n30_button_device,
 372         &n30_blue_led,
 373         &n30_warning_led,
 374 };
 375
 376 static struct platform_device *n35_devices[] __initdata = {
 377         &s3c_device_lcd,
 378         &s3c_device_wdt,
 379         &s3c_device_i2c0,
 380         &s3c_device_iis,
 381         &s3c_device_rtc,
 382         &s3c_device_usbgadget,
 383         &s3c_device_sdi,
 384         &n35_button_device,
 385         &n35_blue_led,
 386         &n35_warning_led,
 387 };
 388
 389 static struct s3c2410_platform_i2c __initdata n30_i2ccfg = {
 390         .flags          = 0,
 391         .slave_addr     = 0x10,
 392         .frequency      = 10*1000,
 393 };
 394
 395 /* Lots of hardcoded stuff, but it sets up the hardware in a useful
 396  * state so that we can boot Linux directly from flash. */
 397 static void __init n30_hwinit(void)
 398 {
 399         /* GPA0-11 special functions -- unknown what they do
 400          * GPA12 N30 special function -- unknown what it does
 401          *       N35/PiN output -- unknown what it does
 402          *
 403          * A12 is nGCS1 on the N30 and an output on the N35/PiN.  I
 404          * don't think it does anything useful on the N30, so I ought
 405          * to make it an output there too since it always driven to 0
 406          * as far as I can tell. */
 407         if (machine_is_n30())
 408                 __raw_writel(0x007fffff, S3C2410_GPACON);
 409         if (machine_is_n35())
 410                 __raw_writel(0x007fefff, S3C2410_GPACON);
 411         __raw_writel(0x00000000, S3C2410_GPADAT);
 412
 413         /* GPB0 TOUT0 backlight level
 414          * GPB1 output 1=backlight on
 415          * GPB2 output IrDA enable 0=transceiver enabled, 1=disabled
 416          * GPB3 output USB D+ pull up 0=disabled, 1=enabled
 417          * GPB4 N30 output -- unknown function
 418          *      N30/PiN GPS control 0=GPS enabled, 1=GPS disabled
 419          * GPB5 output -- unknown function
 420          * GPB6 input -- unknown function
 421          * GPB7 output -- unknown function
 422          * GPB8 output -- probably LCD driver enable
 423          * GPB9 output -- probably LCD VSYNC driver enable
 424          * GPB10 output -- probably LCD HSYNC driver enable
 425          */
 426         __raw_writel(0x00154556, S3C2410_GPBCON);
 427         __raw_writel(0x00000750, S3C2410_GPBDAT);
 428         __raw_writel(0x00000073, S3C2410_GPBUP);
 429
 430         /* GPC0 input RS232 DCD/DSR/RI
 431          * GPC1 LCD
 432          * GPC2 output RS232 DTR?
 433          * GPC3 input RS232 DCD/DSR/RI
 434          * GPC4 LCD
 435          * GPC5 output 0=NAND write enabled, 1=NAND write protect
 436          * GPC6 input -- unknown function
 437          * GPC7 input charger status 0=charger connected
 438          *      this input can be triggered by power on the USB device
 439          *      port too, but will go back to disconnected soon after.
 440          * GPC8 N30/N35 output -- unknown function, always driven to 1
 441          *      PiN input -- unknown function, always read as 1
 442          *      Make it an input with a pull up for all models.
 443          * GPC9-15 LCD
 444          */
 445         __raw_writel(0xaaa80618, S3C2410_GPCCON);
 446         __raw_writel(0x0000014c, S3C2410_GPCDAT);
 447         __raw_writel(0x0000fef2, S3C2410_GPCUP);
 448
 449         /* GPD0 input -- unknown function
 450          * GPD1-D7 LCD
 451          * GPD8 N30 output -- unknown function
 452          *      N35/PiN output 1=GPS LED on
 453          * GPD9 output 0=power led blinks red, 1=normal power led function
 454          * GPD10 output -- unknown function
 455          * GPD11-15 LCD drivers
 456          */
 457         __raw_writel(0xaa95aaa4, S3C2410_GPDCON);
 458         __raw_writel(0x00000601, S3C2410_GPDDAT);
 459         __raw_writel(0x0000fbfe, S3C2410_GPDUP);
 460
 461         /* GPE0-4 I2S audio bus
 462          * GPE5-10 SD/MMC bus
 463          * E11-13 outputs -- unknown function, probably power management
 464          * E14-15 I2C bus connected to the battery controller
 465          */
 466         __raw_writel(0xa56aaaaa, S3C2410_GPECON);
 467         __raw_writel(0x0000efc5, S3C2410_GPEDAT);
 468         __raw_writel(0x0000f81f, S3C2410_GPEUP);
 469
 470         /* GPF0  input 0=power button pressed
 471          * GPF1  input SD/MMC switch 0=card present
 472          * GPF2  N30 1=reset button pressed (inverted compared to the rest)
 473          *       N35/PiN 0=reset button pressed
 474          * GPF3  N30/PiN input -- unknown function
 475          *       N35 input GPS antenna position, 0=antenna closed, 1=open
 476          * GPF4  input 0=button 4 pressed
 477          * GPF5  input 0=button 3 pressed
 478          * GPF6  input 0=button 2 pressed
 479          * GPF7  input 0=button 1 pressed
 480          */
 481         __raw_writel(0x0000aaaa, S3C2410_GPFCON);
 482         __raw_writel(0x00000000, S3C2410_GPFDAT);
 483         __raw_writel(0x000000ff, S3C2410_GPFUP);
 484
 485         /* GPG0  input RS232 DCD/DSR/RI
 486          * GPG1  input 1=USB gadget port has power from a host
 487          * GPG2  N30 input -- unknown function
 488          *       N35/PiN input 0=headphones plugged in, 1=not plugged in
 489          * GPG3  N30 output -- unknown function
 490          *       N35/PiN input with unknown function
 491          * GPG4  N30 output 0=MMC enabled, 1=MMC disabled
 492          * GPG5  N30 output 0=BlueTooth chip disabled, 1=enabled
 493          *       N35/PiN input joystick right
 494          * GPG6  N30 output 0=blue led on, 1=off
 495          *       N35/PiN input joystick left
 496          * GPG7  input 0=thumbwheel pressed
 497          * GPG8  input 0=thumbwheel down
 498          * GPG9  input 0=thumbwheel up
 499          * GPG10 input SD/MMC write protect switch
 500          * GPG11 N30 input -- unknown function
 501          *       N35 output 0=GPS antenna powered, 1=not powered
 502          *       PiN output -- unknown function
 503          * GPG12-15 touch screen functions
 504          *
 505          * The pullups differ between the models, so enable all
 506          * pullups that are enabled on any of the models.
 507          */
 508         if (machine_is_n30())
 509                 __raw_writel(0xff0a956a, S3C2410_GPGCON);
 510         if (machine_is_n35())
 511                 __raw_writel(0xff4aa92a, S3C2410_GPGCON);
 512         __raw_writel(0x0000e800, S3C2410_GPGDAT);
 513         __raw_writel(0x0000f86f, S3C2410_GPGUP);
 514
 515         /* GPH0/1/2/3 RS232 serial port
 516          * GPH4/5 IrDA serial port
 517          * GPH6/7  N30 BlueTooth serial port
 518          *         N35/PiN GPS receiver
 519          * GPH8 input -- unknown function
 520          * GPH9 CLKOUT0 HCLK -- unknown use
 521          * GPH10 CLKOUT1 FCLK -- unknown use
 522          *
 523          * The pull ups for H6/H7 are enabled on N30 but not on the
 524          * N35/PiN.  I suppose is useful for a budget model of the N30
 525          * with no bluetooth.  It doesn't hurt to have the pull ups
 526          * enabled on the N35, so leave them enabled for all models.
 527          */
 528         __raw_writel(0x0028aaaa, S3C2410_GPHCON);
 529         __raw_writel(0x000005ef, S3C2410_GPHDAT);
 530         __raw_writel(0x0000063f, S3C2410_GPHUP);
 531 }
 532
 533 static void __init n30_map_io(void)
 534 {
 535         s3c24xx_init_io(n30_iodesc, ARRAY_SIZE(n30_iodesc));
 536         n30_hwinit();
 537         s3c24xx_init_uarts(n30_uartcfgs, ARRAY_SIZE(n30_uartcfgs));
 538         samsung_set_timer_source(SAMSUNG_PWM3, SAMSUNG_PWM4);
 539 }
 540
 541 static void __init n30_init_time(void)
 542 {
 543         s3c2410_init_clocks(12000000);
 544         samsung_timer_init();
 545 }
 546
 547 /* GPB3 is the line that controls the pull-up for the USB D+ line */
 548
 549 static void __init n30_init(void)
 550 {
 551         WARN_ON(gpio_request(S3C2410_GPG(4), "mmc power"));
 552
 553         s3c24xx_fb_set_platdata(&n30_fb_info);
 554         s3c24xx_udc_set_platdata(&n30_udc_cfg);
 555         s3c24xx_mci_set_platdata(&n30_mci_cfg);
 556         s3c_i2c0_set_platdata(&n30_i2ccfg);
 557
 558         /* Turn off suspend on both USB ports, and switch the
 559          * selectable USB port to USB device mode. */
 560
 561         s3c2410_modify_misccr(S3C2410_MISCCR_USBHOST |
 562                               S3C2410_MISCCR_USBSUSPND0 |
 563                               S3C2410_MISCCR_USBSUSPND1, 0x0);
 564
 565         if (machine_is_n30()) {
 566                 /* Turn off suspend on both USB ports, and switch the
 567                  * selectable USB port to USB device mode. */
 568                 s3c2410_modify_misccr(S3C2410_MISCCR_USBHOST |
 569                                       S3C2410_MISCCR_USBSUSPND0 |
 570                                       S3C2410_MISCCR_USBSUSPND1, 0x0);
 571
 572                 platform_add_devices(n30_devices, ARRAY_SIZE(n30_devices));
 573         }
 574
 575         if (machine_is_n35()) {
 576                 /* Turn off suspend and switch the selectable USB port
 577                  * to USB device mode.  Turn on suspend for the host
 578                  * port since it is not connected on the N35.
 579                  *
 580                  * Actually, the host port is available at some pads
 581                  * on the back of the device, so it would actually be
 582                  * possible to add a USB device inside the N35 if you
 583                  * are willing to do some hardware modifications. */
 584                 s3c2410_modify_misccr(S3C2410_MISCCR_USBHOST |
 585                                       S3C2410_MISCCR_USBSUSPND0 |
 586                                       S3C2410_MISCCR_USBSUSPND1,
 587                                       S3C2410_MISCCR_USBSUSPND0);
 588
 589                 platform_add_devices(n35_devices, ARRAY_SIZE(n35_devices));
 590         }
 591 }
 592
 593 MACHINE_START(N30, "Acer-N30")
 594         /* Maintainer: Christer Weinigel <christer@weinigel.se>,
 595                                 Ben Dooks <ben-linux@fluff.org>
 596         */
 597         .atag_offset    = 0x100,
 598         .init_time      = n30_init_time,
 599         .init_machine   = n30_init,
 600         .init_irq       = s3c2410_init_irq,
 601         .map_io         = n30_map_io,
 602 MACHINE_END
 603
 604 MACHINE_START(N35, "Acer-N35")
 605         /* Maintainer: Christer Weinigel <christer@weinigel.se>
 606         */
 607         .atag_offset    = 0x100,
 608         .init_time      = n30_init_time,
 609         .init_machine   = n30_init,
 610         .init_irq       = s3c2410_init_irq,
 611         .map_io         = n30_map_io,
 612 MACHINE_END