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/input.h>
  23 #include <linux/interrupt.h>
  24 #include <linux/platform_device.h>
  25 #include <linux/serial_core.h>
  26 #include <linux/timer.h>
  27 #include <linux/io.h>
  28
  29 #include <mach/hardware.h>
  30 #include <asm/irq.h>
  31 #include <asm/mach-types.h>
  32
  33 #include <mach/fb.h>
  34 #include <mach/leds-gpio.h>
  35 #include <mach/regs-gpio.h>
  36 #include <mach/regs-lcd.h>
  37
  38 #include <asm/mach/arch.h>
  39 #include <asm/mach/irq.h>
  40 #include <asm/mach/map.h>
  41
  42 #include <plat/iic.h>
  43 #include <plat/regs-serial.h>
  44
  45 #include <plat/clock.h>
  46 #include <plat/cpu.h>
  47 #include <plat/devs.h>
  48 #include <plat/s3c2410.h>
  49 #include <plat/udc.h>
  50
  51 static struct map_desc n30_iodesc[] __initdata = {
  52         /* nothing here yet */
  53 };
  54
  55 static struct s3c2410_uartcfg n30_uartcfgs[] = {
  56         /* Normal serial port */
  57         [0] = {
  58                 .hwport      = 0,
  59                 .flags       = 0,
  60                 .ucon        = 0x2c5,
  61                 .ulcon       = 0x03,
  62                 .ufcon       = 0x51,
  63         },
  64         /* IR port */
  65         [1] = {
  66                 .hwport      = 1,
  67                 .flags       = 0,
  68                 .uart_flags  = UPF_CONS_FLOW,
  69                 .ucon        = 0x2c5,
  70                 .ulcon       = 0x43,
  71                 .ufcon       = 0x51,
  72         },
  73         /* On the N30 the bluetooth controller is connected here.
  74          * On the N35 and variants the GPS receiver is connected here. */
  75         [2] = {
  76                 .hwport      = 2,
  77                 .flags       = 0,
  78                 .ucon        = 0x2c5,
  79                 .ulcon       = 0x03,
  80                 .ufcon       = 0x51,
  81         },
  82 };
  83
  84 static void n30_udc_pullup(enum s3c2410_udc_cmd_e cmd)
  85 {
  86         switch (cmd) {
  87         case S3C2410_UDC_P_ENABLE :
  88                 s3c2410_gpio_setpin(S3C2410_GPB3, 1);
  89                 break;
  90         case S3C2410_UDC_P_DISABLE :
  91                 s3c2410_gpio_setpin(S3C2410_GPB3, 0);
  92                 break;
  93         case S3C2410_UDC_P_RESET :
  94                 break;
  95         default:
  96                 break;
  97         }
  98 }
  99
 100 static struct s3c2410_udc_mach_info n30_udc_cfg __initdata = {
 101         .udc_command            = n30_udc_pullup,
 102         .vbus_pin               = S3C2410_GPG1,
 103         .vbus_pin_inverted      = 0,
 104 };
 105
 106 static struct gpio_keys_button n30_buttons[] = {
 107         {
 108                 .gpio           = S3C2410_GPF0,
 109                 .code           = KEY_POWER,
 110                 .desc           = "Power",
 111                 .active_low     = 0,
 112         },
 113         {
 114                 .gpio           = S3C2410_GPG9,
 115                 .code           = KEY_UP,
 116                 .desc           = "Thumbwheel Up",
 117                 .active_low     = 0,
 118         },
 119         {
 120                 .gpio           = S3C2410_GPG8,
 121                 .code           = KEY_DOWN,
 122                 .desc           = "Thumbwheel Down",
 123                 .active_low     = 0,
 124         },
 125         {
 126                 .gpio           = S3C2410_GPG7,
 127                 .code           = KEY_ENTER,
 128                 .desc           = "Thumbwheel Press",
 129                 .active_low     = 0,
 130         },
 131         {
 132                 .gpio           = S3C2410_GPF7,
 133                 .code           = KEY_HOMEPAGE,
 134                 .desc           = "Home",
 135                 .active_low     = 0,
 136         },
 137         {
 138                 .gpio           = S3C2410_GPF6,
 139                 .code           = KEY_CALENDAR,
 140                 .desc           = "Calendar",
 141                 .active_low     = 0,
 142         },
 143         {
 144                 .gpio           = S3C2410_GPF5,
 145                 .code           = KEY_ADDRESSBOOK,
 146                 .desc           = "Contacts",
 147                 .active_low     = 0,
 148         },
 149         {
 150                 .gpio           = S3C2410_GPF4,
 151                 .code           = KEY_MAIL,
 152                 .desc           = "Mail",
 153                 .active_low     = 0,
 154         },
 155 };
 156
 157 static struct gpio_keys_platform_data n30_button_data = {
 158         .buttons        = n30_buttons,
 159         .nbuttons       = ARRAY_SIZE(n30_buttons),
 160 };
 161
 162 static struct platform_device n30_button_device = {
 163         .name           = "gpio-keys",
 164         .id             = -1,
 165         .dev            = {
 166                 .platform_data  = &n30_button_data,
 167         }
 168 };
 169
 170 static struct gpio_keys_button n35_buttons[] = {
 171         {
 172                 .gpio           = S3C2410_GPF0,
 173                 .code           = KEY_POWER,
 174                 .desc           = "Power",
 175                 .active_low     = 0,
 176         },
 177         {
 178                 .gpio           = S3C2410_GPG9,
 179                 .code           = KEY_UP,
 180                 .desc           = "Joystick Up",
 181                 .active_low     = 0,
 182         },
 183         {
 184                 .gpio           = S3C2410_GPG8,
 185                 .code           = KEY_DOWN,
 186                 .desc           = "Joystick Down",
 187                 .active_low     = 0,
 188         },
 189         {
 190                 .gpio           = S3C2410_GPG6,
 191                 .code           = KEY_DOWN,
 192                 .desc           = "Joystick Left",
 193                 .active_low     = 0,
 194         },
 195         {
 196                 .gpio           = S3C2410_GPG5,
 197                 .code           = KEY_DOWN,
 198                 .desc           = "Joystick Right",
 199                 .active_low     = 0,
 200         },
 201         {
 202                 .gpio           = S3C2410_GPG7,
 203                 .code           = KEY_ENTER,
 204                 .desc           = "Joystick Press",
 205                 .active_low     = 0,
 206         },
 207         {
 208                 .gpio           = S3C2410_GPF7,
 209                 .code           = KEY_HOMEPAGE,
 210                 .desc           = "Home",
 211                 .active_low     = 0,
 212         },
 213         {
 214                 .gpio           = S3C2410_GPF6,
 215                 .code           = KEY_CALENDAR,
 216                 .desc           = "Calendar",
 217                 .active_low     = 0,
 218         },
 219         {
 220                 .gpio           = S3C2410_GPF5,
 221                 .code           = KEY_ADDRESSBOOK,
 222                 .desc           = "Contacts",
 223                 .active_low     = 0,
 224         },
 225         {
 226                 .gpio           = S3C2410_GPF4,
 227                 .code           = KEY_MAIL,
 228                 .desc           = "Mail",
 229                 .active_low     = 0,
 230         },
 231         {
 232                 .gpio           = S3C2410_GPF3,
 233                 .code           = SW_RADIO,
 234                 .desc           = "GPS Antenna",
 235                 .active_low     = 0,
 236         },
 237         {
 238                 .gpio           = S3C2410_GPG2,
 239                 .code           = SW_HEADPHONE_INSERT,
 240                 .desc           = "Headphone",
 241                 .active_low     = 0,
 242         },
 243 };
 244
 245 static struct gpio_keys_platform_data n35_button_data = {
 246         .buttons        = n35_buttons,
 247         .nbuttons       = ARRAY_SIZE(n35_buttons),
 248 };
 249
 250 static struct platform_device n35_button_device = {
 251         .name           = "gpio-keys",
 252         .id             = -1,
 253         .num_resources  = 0,
 254         .dev            = {
 255                 .platform_data  = &n35_button_data,
 256         }
 257 };
 258
 259 /* This is the bluetooth LED on the device. */
 260 static struct s3c24xx_led_platdata n30_blue_led_pdata = {
 261         .name           = "blue_led",
 262         .gpio           = S3C2410_GPG6,
 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_GPD9,
 274         .def_trigger    = "",
 275 };
 276
 277 static struct platform_device n30_blue_led = {
 278         .name           = "s3c24xx_led",
 279         .id             = 1,
 280         .dev            = {
 281                 .platform_data  = &n30_blue_led_pdata,
 282         },
 283 };
 284
 285 static struct platform_device n30_warning_led = {
 286         .name           = "s3c24xx_led",
 287         .id             = 2,
 288         .dev            = {
 289                 .platform_data  = &n30_warning_led_pdata,
 290         },
 291 };
 292
 293 static struct s3c2410fb_display n30_display __initdata = {
 294         .type           = S3C2410_LCDCON1_TFT,
 295         .width          = 240,
 296         .height         = 320,
 297         .pixclock       = 170000,
 298
 299         .xres           = 240,
 300         .yres           = 320,
 301         .bpp            = 16,
 302         .left_margin    = 3,
 303         .right_margin   = 40,
 304         .hsync_len      = 40,
 305         .upper_margin   = 2,
 306         .lower_margin   = 3,
 307         .vsync_len      = 2,
 308
 309         .lcdcon5 = S3C2410_LCDCON5_INVVLINE | S3C2410_LCDCON5_INVVFRAME,
 310 };
 311
 312 static struct s3c2410fb_mach_info n30_fb_info __initdata = {
 313         .displays       = &n30_display,
 314         .num_displays   = 1,
 315         .default_display = 0,
 316         .lpcsel         = 0x06,
 317 };
 318
 319 static struct platform_device *n30_devices[] __initdata = {
 320         &s3c_device_lcd,
 321         &s3c_device_wdt,
 322         &s3c_device_i2c0,
 323         &s3c_device_iis,
 324         &s3c_device_usb,
 325         &s3c_device_usbgadget,
 326         &n30_button_device,
 327         &n30_blue_led,
 328         &n30_warning_led,
 329 };
 330
 331 static struct platform_device *n35_devices[] __initdata = {
 332         &s3c_device_lcd,
 333         &s3c_device_wdt,
 334         &s3c_device_i2c0,
 335         &s3c_device_iis,
 336         &s3c_device_usbgadget,
 337         &n35_button_device,
 338 };
 339
 340 static struct s3c2410_platform_i2c n30_i2ccfg = {
 341         .flags          = 0,
 342         .slave_addr     = 0x10,
 343         .bus_freq       = 10*1000,
 344         .max_freq       = 10*1000,
 345 };
 346
 347 /* Lots of hardcoded stuff, but it sets up the hardware in a useful
 348  * state so that we can boot Linux directly from flash. */
 349 static void __init n30_hwinit(void)
 350 {
 351         /* GPA0-11 special functions -- unknown what they do
 352          * GPA12 N30 special function -- unknown what it does
 353          *       N35/PiN output -- unknown what it does
 354          *
 355          * A12 is nGCS1 on the N30 and an output on the N35/PiN.  I
 356          * don't think it does anything useful on the N30, so I ought
 357          * to make it an output there too since it always driven to 0
 358          * as far as I can tell. */
 359         if (machine_is_n30())
 360                 __raw_writel(0x007fffff, S3C2410_GPACON);
 361         if (machine_is_n35())
 362                 __raw_writel(0x007fefff, S3C2410_GPACON);
 363         __raw_writel(0x00000000, S3C2410_GPADAT);
 364
 365         /* GPB0 TOUT0 backlight level
 366          * GPB1 output 1=backlight on
 367          * GPB2 output IrDA enable 0=transceiver enabled, 1=disabled
 368          * GPB3 output USB D+ pull up 0=disabled, 1=enabled
 369          * GPB4 N30 output -- unknown function
 370          *      N30/PiN GPS control 0=GPS enabled, 1=GPS disabled
 371          * GPB5 output -- unknown function
 372          * GPB6 input -- unknown function
 373          * GPB7 output -- unknown function
 374          * GPB8 output -- probably LCD driver enable
 375          * GPB9 output -- probably LCD VSYNC driver enable
 376          * GPB10 output -- probably LCD HSYNC driver enable
 377          */
 378         __raw_writel(0x00154556, S3C2410_GPBCON);
 379         __raw_writel(0x00000750, S3C2410_GPBDAT);
 380         __raw_writel(0x00000073, S3C2410_GPBUP);
 381
 382         /* GPC0 input RS232 DCD/DSR/RI
 383          * GPC1 LCD
 384          * GPC2 output RS232 DTR?
 385          * GPC3 input RS232 DCD/DSR/RI
 386          * GPC4 LCD
 387          * GPC5 output 0=NAND write enabled, 1=NAND write protect
 388          * GPC6 input -- unknown function
 389          * GPC7 input charger status 0=charger connected
 390          *      this input can be triggered by power on the USB device
 391          *      port too, but will go back to disconnected soon after.
 392          * GPC8 N30/N35 output -- unknown function, always driven to 1
 393          *      PiN input -- unknown function, always read as 1
 394          *      Make it an input with a pull up for all models.
 395          * GPC9-15 LCD
 396          */
 397         __raw_writel(0xaaa80618, S3C2410_GPCCON);
 398         __raw_writel(0x0000014c, S3C2410_GPCDAT);
 399         __raw_writel(0x0000fef2, S3C2410_GPCUP);
 400
 401         /* GPD0 input -- unknown function
 402          * GPD1-D7 LCD
 403          * GPD8 N30 output -- unknown function
 404          *      N35/PiN output 1=GPS LED on
 405          * GPD9 output 0=power led blinks red, 1=normal power led function
 406          * GPD10 output -- unknown function
 407          * GPD11-15 LCD drivers
 408          */
 409         __raw_writel(0xaa95aaa4, S3C2410_GPDCON);
 410         __raw_writel(0x00000601, S3C2410_GPDDAT);
 411         __raw_writel(0x0000fbfe, S3C2410_GPDUP);
 412
 413         /* GPE0-4 I2S audio bus
 414          * GPE5-10 SD/MMC bus
 415          * E11-13 outputs -- unknown function, probably power management
 416          * E14-15 I2C bus connected to the battery controller
 417          */
 418         __raw_writel(0xa56aaaaa, S3C2410_GPECON);
 419         __raw_writel(0x0000efc5, S3C2410_GPEDAT);
 420         __raw_writel(0x0000f81f, S3C2410_GPEUP);
 421
 422         /* GPF0  input 0=power button pressed
 423          * GPF1  input SD/MMC switch 0=card present
 424          * GPF2  N30 1=reset button pressed (inverted compared to the rest)
 425          *       N35/PiN 0=reset button pressed
 426          * GPF3  N30/PiN input -- unknown function
 427          *       N35 input GPS antenna position, 0=antenna closed, 1=open
 428          * GPF4  input 0=button 4 pressed
 429          * GPF5  input 0=button 3 pressed
 430          * GPF6  input 0=button 2 pressed
 431          * GPF7  input 0=button 1 pressed
 432          */
 433         __raw_writel(0x0000aaaa, S3C2410_GPFCON);
 434         __raw_writel(0x00000000, S3C2410_GPFDAT);
 435         __raw_writel(0x000000ff, S3C2410_GPFUP);
 436
 437         /* GPG0  input RS232 DCD/DSR/RI
 438          * GPG1  input 1=USB gadget port has power from a host
 439          * GPG2  N30 input -- unknown function
 440          *       N35/PiN input 0=headphones plugged in, 1=not plugged in
 441          * GPG3  N30 output -- unknown function
 442          *       N35/PiN input with unknown function
 443          * GPG4  N30 output 0=MMC enabled, 1=MMC disabled
 444          * GPG5  N30 output 0=BlueTooth chip disabled, 1=enabled
 445          *       N35/PiN input joystick right
 446          * GPG6  N30 output 0=blue led on, 1=off
 447          *       N35/PiN input joystick left
 448          * GPG7  input 0=thumbwheel pressed
 449          * GPG8  input 0=thumbwheel down
 450          * GPG9  input 0=thumbwheel up
 451          * GPG10 input SD/MMC write protect switch
 452          * GPG11 N30 input -- unknown function
 453          *       N35 output 0=GPS antenna powered, 1=not powered
 454          *       PiN output -- unknown function
 455          * GPG12-15 touch screen functions
 456          *
 457          * The pullups differ between the models, so enable all
 458          * pullups that are enabled on any of the models.
 459          */
 460         if (machine_is_n30())
 461                 __raw_writel(0xff0a956a, S3C2410_GPGCON);
 462         if (machine_is_n35())
 463                 __raw_writel(0xff4aa92a, S3C2410_GPGCON);
 464         __raw_writel(0x0000e800, S3C2410_GPGDAT);
 465         __raw_writel(0x0000f86f, S3C2410_GPGUP);
 466
 467         /* GPH0/1/2/3 RS232 serial port
 468          * GPH4/5 IrDA serial port
 469          * GPH6/7  N30 BlueTooth serial port
 470          *         N35/PiN GPS receiver
 471          * GPH8 input -- unknown function
 472          * GPH9 CLKOUT0 HCLK -- unknown use
 473          * GPH10 CLKOUT1 FCLK -- unknown use
 474          *
 475          * The pull ups for H6/H7 are enabled on N30 but not on the
 476          * N35/PiN.  I suppose is useful for a budget model of the N30
 477          * with no bluetooh.  It doesn't hurt to have the pull ups
 478          * enabled on the N35, so leave them enabled for all models.
 479          */
 480         __raw_writel(0x0028aaaa, S3C2410_GPHCON);
 481         __raw_writel(0x000005ef, S3C2410_GPHDAT);
 482         __raw_writel(0x0000063f, S3C2410_GPHUP);
 483 }
 484
 485 static void __init n30_map_io(void)
 486 {
 487         s3c24xx_init_io(n30_iodesc, ARRAY_SIZE(n30_iodesc));
 488         n30_hwinit();
 489         s3c24xx_init_clocks(0);
 490         s3c24xx_init_uarts(n30_uartcfgs, ARRAY_SIZE(n30_uartcfgs));
 491 }
 492
 493 static void __init n30_init_irq(void)
 494 {
 495         s3c24xx_init_irq();
 496 }
 497
 498 /* GPB3 is the line that controls the pull-up for the USB D+ line */
 499
 500 static void __init n30_init(void)
 501 {
 502         s3c24xx_fb_set_platdata(&n30_fb_info);
 503         s3c_device_i2c0.dev.platform_data = &n30_i2ccfg;
 504         s3c24xx_udc_set_platdata(&n30_udc_cfg);
 505
 506         /* Turn off suspend on both USB ports, and switch the
 507          * selectable USB port to USB device mode. */
 508
 509         s3c2410_modify_misccr(S3C2410_MISCCR_USBHOST |
 510                               S3C2410_MISCCR_USBSUSPND0 |
 511                               S3C2410_MISCCR_USBSUSPND1, 0x0);
 512
 513         if (machine_is_n30()) {
 514                 /* Turn off suspend on both USB ports, and switch the
 515                  * selectable USB port to USB device mode. */
 516                 s3c2410_modify_misccr(S3C2410_MISCCR_USBHOST |
 517                                       S3C2410_MISCCR_USBSUSPND0 |
 518                                       S3C2410_MISCCR_USBSUSPND1, 0x0);
 519
 520                 platform_add_devices(n30_devices, ARRAY_SIZE(n30_devices));
 521         }
 522
 523         if (machine_is_n35()) {
 524                 /* Turn off suspend and switch the selectable USB port
 525                  * to USB device mode.  Turn on suspend for the host
 526                  * port since it is not connected on the N35.
 527                  *
 528                  * Actually, the host port is available at some pads
 529                  * on the back of the device, so it would actually be
 530                  * possible to add a USB device inside the N35 if you
 531                  * are willing to do some hardware modifications. */
 532                 s3c2410_modify_misccr(S3C2410_MISCCR_USBHOST |
 533                                       S3C2410_MISCCR_USBSUSPND0 |
 534                                       S3C2410_MISCCR_USBSUSPND1,
 535                                       S3C2410_MISCCR_USBSUSPND1);
 536
 537                 platform_add_devices(n35_devices, ARRAY_SIZE(n35_devices));
 538         }
 539 }
 540
 541 MACHINE_START(N30, "Acer-N30")
 542         /* Maintainer: Christer Weinigel <christer@weinigel.se>,
 543                                 Ben Dooks <ben-linux@fluff.org>
 544         */
 545         .phys_io        = S3C2410_PA_UART,
 546         .io_pg_offst    = (((u32)S3C24XX_VA_UART) >> 18) & 0xfffc,
 547         .boot_params    = S3C2410_SDRAM_PA + 0x100,
 548         .timer          = &s3c24xx_timer,
 549         .init_machine   = n30_init,
 550         .init_irq       = n30_init_irq,
 551         .map_io         = n30_map_io,
 552 MACHINE_END
 553
 554 MACHINE_START(N35, "Acer-N35")
 555         /* Maintainer: Christer Weinigel <christer@weinigel.se>
 556         */
 557         .phys_io        = S3C2410_PA_UART,
 558         .io_pg_offst    = (((u32)S3C24XX_VA_UART) >> 18) & 0xfffc,
 559         .boot_params    = S3C2410_SDRAM_PA + 0x100,
 560         .timer          = &s3c24xx_timer,
 561         .init_machine   = n30_init,
 562         .init_irq       = n30_init_irq,
 563         .map_io         = n30_map_io,
 564 MACHINE_END