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

   1 // SPDX-License-Identifier: GPL-2.0
   2 //
   3 // Machine specific code for the Acer n30, Acer N35, Navman PiN 570,
   4 // Yakumo AlphaX and Airis NC05 PDAs.
   5 //
   6 // Copyright (c) 2003-2005 Simtec Electronics
   7 //      Ben Dooks <ben@simtec.co.uk>
   8 //
   9 // Copyright (c) 2005-2008 Christer Weinigel <christer@weinigel.se>
  10 //
  11 // There is a wiki with more information about the n30 port at
  12 // http://handhelds.org/moin/moin.cgi/AcerN30Documentation .
  13
  14 #include <linux/kernel.h>
  15 #include <linux/types.h>
  16
  17 #include <linux/gpio_keys.h>
  18 #include <linux/init.h>
  19 #include <linux/gpio.h>
  20 #include <linux/input.h>
  21 #include <linux/interrupt.h>
  22 #include <linux/platform_device.h>
  23 #include <linux/serial_core.h>
  24 #include <linux/serial_s3c.h>
  25 #include <linux/timer.h>
  26 #include <linux/io.h>
  27 #include <linux/mmc/host.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 <linux/platform_data/leds-s3c24xx.h>
  35 #include <mach/regs-gpio.h>
  36 #include <mach/regs-lcd.h>
  37 #include <mach/gpio-samsung.h>
  38
  39 #include <asm/mach/arch.h>
  40 #include <asm/mach/irq.h>
  41 #include <asm/mach/map.h>
  42
  43 #include <linux/platform_data/i2c-s3c2410.h>
  44
  45 #include <plat/cpu.h>
  46 #include <plat/devs.h>
  47 #include <linux/platform_data/mmc-s3cmci.h>
  48 #include <linux/platform_data/usb-s3c2410_udc.h>
  49 #include <plat/samsung-time.h>
  50
  51 #include "common.h"
  52
  53 static struct map_desc n30_iodesc[] __initdata = {
  54         /* nothing here yet */
  55 };
  56
  57 static struct s3c2410_uartcfg n30_uartcfgs[] = {
  58         /* Normal serial port */
  59         [0] = {
  60                 .hwport      = 0,
  61                 .flags       = 0,
  62                 .ucon        = 0x2c5,
  63                 .ulcon       = 0x03,
  64                 .ufcon       = 0x51,
  65         },
  66         /* IR port */
  67         [1] = {
  68                 .hwport      = 1,
  69                 .flags       = 0,
  70                 .uart_flags  = UPF_CONS_FLOW,
  71                 .ucon        = 0x2c5,
  72                 .ulcon       = 0x43,
  73                 .ufcon       = 0x51,
  74         },
  75         /* On the N30 the bluetooth controller is connected here.
  76          * On the N35 and variants the GPS receiver is connected here. */
  77         [2] = {
  78                 .hwport      = 2,
  79                 .flags       = 0,
  80                 .ucon        = 0x2c5,
  81                 .ulcon       = 0x03,
  82                 .ufcon       = 0x51,
  83         },
  84 };
  85
  86 static struct s3c2410_udc_mach_info n30_udc_cfg __initdata = {
  87         .vbus_pin               = S3C2410_GPG(1),
  88         .vbus_pin_inverted      = 0,
  89         .pullup_pin             = S3C2410_GPB(3),
  90 };
  91
  92 static struct gpio_keys_button n30_buttons[] = {
  93         {
  94                 .gpio           = S3C2410_GPF(0),
  95                 .code           = KEY_POWER,
  96                 .desc           = "Power",
  97                 .active_low     = 0,
  98         },
  99         {
 100                 .gpio           = S3C2410_GPG(9),
 101                 .code           = KEY_UP,
 102                 .desc           = "Thumbwheel Up",
 103                 .active_low     = 0,
 104         },
 105         {
 106                 .gpio           = S3C2410_GPG(8),
 107                 .code           = KEY_DOWN,
 108                 .desc           = "Thumbwheel Down",
 109                 .active_low     = 0,
 110         },
 111         {
 112                 .gpio           = S3C2410_GPG(7),
 113                 .code           = KEY_ENTER,
 114                 .desc           = "Thumbwheel Press",
 115                 .active_low     = 0,
 116         },
 117         {
 118                 .gpio           = S3C2410_GPF(7),
 119                 .code           = KEY_HOMEPAGE,
 120                 .desc           = "Home",
 121                 .active_low     = 0,
 122         },
 123         {
 124                 .gpio           = S3C2410_GPF(6),
 125                 .code           = KEY_CALENDAR,
 126                 .desc           = "Calendar",
 127                 .active_low     = 0,
 128         },
 129         {
 130                 .gpio           = S3C2410_GPF(5),
 131                 .code           = KEY_ADDRESSBOOK,
 132                 .desc           = "Contacts",
 133                 .active_low     = 0,
 134         },
 135         {
 136                 .gpio           = S3C2410_GPF(4),
 137                 .code           = KEY_MAIL,
 138                 .desc           = "Mail",
 139                 .active_low     = 0,
 140         },
 141 };
 142
 143 static struct gpio_keys_platform_data n30_button_data = {
 144         .buttons        = n30_buttons,
 145         .nbuttons       = ARRAY_SIZE(n30_buttons),
 146 };
 147
 148 static struct platform_device n30_button_device = {
 149         .name           = "gpio-keys",
 150         .id             = -1,
 151         .dev            = {
 152                 .platform_data  = &n30_button_data,
 153         }
 154 };
 155
 156 static struct gpio_keys_button n35_buttons[] = {
 157         {
 158                 .gpio           = S3C2410_GPF(0),
 159                 .code           = KEY_POWER,
 160                 .type           = EV_PWR,
 161                 .desc           = "Power",
 162                 .active_low     = 0,
 163                 .wakeup         = 1,
 164         },
 165         {
 166                 .gpio           = S3C2410_GPG(9),
 167                 .code           = KEY_UP,
 168                 .desc           = "Joystick Up",
 169                 .active_low     = 0,
 170         },
 171         {
 172                 .gpio           = S3C2410_GPG(8),
 173                 .code           = KEY_DOWN,
 174                 .desc           = "Joystick Down",
 175                 .active_low     = 0,
 176         },
 177         {
 178                 .gpio           = S3C2410_GPG(6),
 179                 .code           = KEY_DOWN,
 180                 .desc           = "Joystick Left",
 181                 .active_low     = 0,
 182         },
 183         {
 184                 .gpio           = S3C2410_GPG(5),
 185                 .code           = KEY_DOWN,
 186                 .desc           = "Joystick Right",
 187                 .active_low     = 0,
 188         },
 189         {
 190                 .gpio           = S3C2410_GPG(7),
 191                 .code           = KEY_ENTER,
 192                 .desc           = "Joystick Press",
 193                 .active_low     = 0,
 194         },
 195         {
 196                 .gpio           = S3C2410_GPF(7),
 197                 .code           = KEY_HOMEPAGE,
 198                 .desc           = "Home",
 199                 .active_low     = 0,
 200         },
 201         {
 202                 .gpio           = S3C2410_GPF(6),
 203                 .code           = KEY_CALENDAR,
 204                 .desc           = "Calendar",
 205                 .active_low     = 0,
 206         },
 207         {
 208                 .gpio           = S3C2410_GPF(5),
 209                 .code           = KEY_ADDRESSBOOK,
 210                 .desc           = "Contacts",
 211                 .active_low     = 0,
 212         },
 213         {
 214                 .gpio           = S3C2410_GPF(4),
 215                 .code           = KEY_MAIL,
 216                 .desc           = "Mail",
 217                 .active_low     = 0,
 218         },
 219         {
 220                 .gpio           = S3C2410_GPF(3),
 221                 .code           = SW_RADIO,
 222                 .desc           = "GPS Antenna",
 223                 .active_low     = 0,
 224         },
 225         {
 226                 .gpio           = S3C2410_GPG(2),
 227                 .code           = SW_HEADPHONE_INSERT,
 228                 .desc           = "Headphone",
 229                 .active_low     = 0,
 230         },
 231 };
 232
 233 static struct gpio_keys_platform_data n35_button_data = {
 234         .buttons        = n35_buttons,
 235         .nbuttons       = ARRAY_SIZE(n35_buttons),
 236 };
 237
 238 static struct platform_device n35_button_device = {
 239         .name           = "gpio-keys",
 240         .id             = -1,
 241         .num_resources  = 0,
 242         .dev            = {
 243                 .platform_data  = &n35_button_data,
 244         }
 245 };
 246
 247 /* This is the bluetooth LED on the device. */
 248 static struct s3c24xx_led_platdata n30_blue_led_pdata = {
 249         .name           = "blue_led",
 250         .gpio           = S3C2410_GPG(6),
 251         .def_trigger    = "",
 252 };
 253
 254 /* This is the blue LED on the device. Originally used to indicate GPS activity
 255  * by flashing. */
 256 static struct s3c24xx_led_platdata n35_blue_led_pdata = {
 257         .name           = "blue_led",
 258         .gpio           = S3C2410_GPD(8),
 259         .def_trigger    = "",
 260 };
 261
 262 /* This LED is driven by the battery microcontroller, and is blinking
 263  * red, blinking green or solid green when the battery is low,
 264  * charging or full respectively.  By driving GPD9 low, it's possible
 265  * to force the LED to blink red, so call that warning LED.  */
 266 static struct s3c24xx_led_platdata n30_warning_led_pdata = {
 267         .name           = "warning_led",
 268         .flags          = S3C24XX_LEDF_ACTLOW,
 269         .gpio           = S3C2410_GPD(9),
 270         .def_trigger    = "",
 271 };
 272
 273 static struct s3c24xx_led_platdata n35_warning_led_pdata = {
 274         .name           = "warning_led",
 275         .flags          = S3C24XX_LEDF_ACTLOW | S3C24XX_LEDF_TRISTATE,
 276         .gpio           = S3C2410_GPD(9),
 277         .def_trigger    = "",
 278 };
 279
 280 static struct platform_device n30_blue_led = {
 281         .name           = "s3c24xx_led",
 282         .id             = 1,
 283         .dev            = {
 284                 .platform_data  = &n30_blue_led_pdata,
 285         },
 286 };
 287
 288 static struct platform_device n35_blue_led = {
 289         .name           = "s3c24xx_led",
 290         .id             = 1,
 291         .dev            = {
 292                 .platform_data  = &n35_blue_led_pdata,
 293         },
 294 };
 295
 296 static struct platform_device n30_warning_led = {
 297         .name           = "s3c24xx_led",
 298         .id             = 2,
 299         .dev            = {
 300                 .platform_data  = &n30_warning_led_pdata,
 301         },
 302 };
 303
 304 static struct platform_device n35_warning_led = {
 305         .name           = "s3c24xx_led",
 306         .id             = 2,
 307         .dev            = {
 308                 .platform_data  = &n35_warning_led_pdata,
 309         },
 310 };
 311
 312 static struct s3c2410fb_display n30_display __initdata = {
 313         .type           = S3C2410_LCDCON1_TFT,
 314         .width          = 240,
 315         .height         = 320,
 316         .pixclock       = 170000,
 317
 318         .xres           = 240,
 319         .yres           = 320,
 320         .bpp            = 16,
 321         .left_margin    = 3,
 322         .right_margin   = 40,
 323         .hsync_len      = 40,
 324         .upper_margin   = 2,
 325         .lower_margin   = 3,
 326         .vsync_len      = 2,
 327
 328         .lcdcon5 = S3C2410_LCDCON5_INVVLINE | S3C2410_LCDCON5_INVVFRAME,
 329 };
 330
 331 static struct s3c2410fb_mach_info n30_fb_info __initdata = {
 332         .displays       = &n30_display,
 333         .num_displays   = 1,
 334         .default_display = 0,
 335         .lpcsel         = 0x06,
 336 };
 337
 338 static void n30_sdi_set_power(unsigned char power_mode, unsigned short vdd)
 339 {
 340         switch (power_mode) {
 341         case MMC_POWER_ON:
 342         case MMC_POWER_UP:
 343                 gpio_set_value(S3C2410_GPG(4), 1);
 344                 break;
 345         case MMC_POWER_OFF:
 346         default:
 347                 gpio_set_value(S3C2410_GPG(4), 0);
 348                 break;
 349         }
 350 }
 351
 352 static struct s3c24xx_mci_pdata n30_mci_cfg __initdata = {
 353         .gpio_detect    = S3C2410_GPF(1),
 354         .gpio_wprotect  = S3C2410_GPG(10),
 355         .ocr_avail      = MMC_VDD_32_33,
 356         .set_power      = n30_sdi_set_power,
 357 };
 358
 359 static struct platform_device *n30_devices[] __initdata = {
 360         &s3c_device_lcd,
 361         &s3c_device_wdt,
 362         &s3c_device_i2c0,
 363         &s3c_device_iis,
 364         &s3c_device_ohci,
 365         &s3c_device_rtc,
 366         &s3c_device_usbgadget,
 367         &s3c_device_sdi,
 368         &n30_button_device,
 369         &n30_blue_led,
 370         &n30_warning_led,
 371 };
 372
 373 static struct platform_device *n35_devices[] __initdata = {
 374         &s3c_device_lcd,
 375         &s3c_device_wdt,
 376         &s3c_device_i2c0,
 377         &s3c_device_iis,
 378         &s3c_device_rtc,
 379         &s3c_device_usbgadget,
 380         &s3c_device_sdi,
 381         &n35_button_device,
 382         &n35_blue_led,
 383         &n35_warning_led,
 384 };
 385
 386 static struct s3c2410_platform_i2c __initdata n30_i2ccfg = {
 387         .flags          = 0,
 388         .slave_addr     = 0x10,
 389         .frequency      = 10*1000,
 390 };
 391
 392 /* Lots of hardcoded stuff, but it sets up the hardware in a useful
 393  * state so that we can boot Linux directly from flash. */
 394 static void __init n30_hwinit(void)
 395 {
 396         /* GPA0-11 special functions -- unknown what they do
 397          * GPA12 N30 special function -- unknown what it does
 398          *       N35/PiN output -- unknown what it does
 399          *
 400          * A12 is nGCS1 on the N30 and an output on the N35/PiN.  I
 401          * don't think it does anything useful on the N30, so I ought
 402          * to make it an output there too since it always driven to 0
 403          * as far as I can tell. */
 404         if (machine_is_n30())
 405                 __raw_writel(0x007fffff, S3C2410_GPACON);
 406         if (machine_is_n35())
 407                 __raw_writel(0x007fefff, S3C2410_GPACON);
 408         __raw_writel(0x00000000, S3C2410_GPADAT);
 409
 410         /* GPB0 TOUT0 backlight level
 411          * GPB1 output 1=backlight on
 412          * GPB2 output IrDA enable 0=transceiver enabled, 1=disabled
 413          * GPB3 output USB D+ pull up 0=disabled, 1=enabled
 414          * GPB4 N30 output -- unknown function
 415          *      N30/PiN GPS control 0=GPS enabled, 1=GPS disabled
 416          * GPB5 output -- unknown function
 417          * GPB6 input -- unknown function
 418          * GPB7 output -- unknown function
 419          * GPB8 output -- probably LCD driver enable
 420          * GPB9 output -- probably LCD VSYNC driver enable
 421          * GPB10 output -- probably LCD HSYNC driver enable
 422          */
 423         __raw_writel(0x00154556, S3C2410_GPBCON);
 424         __raw_writel(0x00000750, S3C2410_GPBDAT);
 425         __raw_writel(0x00000073, S3C2410_GPBUP);
 426
 427         /* GPC0 input RS232 DCD/DSR/RI
 428          * GPC1 LCD
 429          * GPC2 output RS232 DTR?
 430          * GPC3 input RS232 DCD/DSR/RI
 431          * GPC4 LCD
 432          * GPC5 output 0=NAND write enabled, 1=NAND write protect
 433          * GPC6 input -- unknown function
 434          * GPC7 input charger status 0=charger connected
 435          *      this input can be triggered by power on the USB device
 436          *      port too, but will go back to disconnected soon after.
 437          * GPC8 N30/N35 output -- unknown function, always driven to 1
 438          *      PiN input -- unknown function, always read as 1
 439          *      Make it an input with a pull up for all models.
 440          * GPC9-15 LCD
 441          */
 442         __raw_writel(0xaaa80618, S3C2410_GPCCON);
 443         __raw_writel(0x0000014c, S3C2410_GPCDAT);
 444         __raw_writel(0x0000fef2, S3C2410_GPCUP);
 445
 446         /* GPD0 input -- unknown function
 447          * GPD1-D7 LCD
 448          * GPD8 N30 output -- unknown function
 449          *      N35/PiN output 1=GPS LED on
 450          * GPD9 output 0=power led blinks red, 1=normal power led function
 451          * GPD10 output -- unknown function
 452          * GPD11-15 LCD drivers
 453          */
 454         __raw_writel(0xaa95aaa4, S3C2410_GPDCON);
 455         __raw_writel(0x00000601, S3C2410_GPDDAT);
 456         __raw_writel(0x0000fbfe, S3C2410_GPDUP);
 457
 458         /* GPE0-4 I2S audio bus
 459          * GPE5-10 SD/MMC bus
 460          * E11-13 outputs -- unknown function, probably power management
 461          * E14-15 I2C bus connected to the battery controller
 462          */
 463         __raw_writel(0xa56aaaaa, S3C2410_GPECON);
 464         __raw_writel(0x0000efc5, S3C2410_GPEDAT);
 465         __raw_writel(0x0000f81f, S3C2410_GPEUP);
 466
 467         /* GPF0  input 0=power button pressed
 468          * GPF1  input SD/MMC switch 0=card present
 469          * GPF2  N30 1=reset button pressed (inverted compared to the rest)
 470          *       N35/PiN 0=reset button pressed
 471          * GPF3  N30/PiN input -- unknown function
 472          *       N35 input GPS antenna position, 0=antenna closed, 1=open
 473          * GPF4  input 0=button 4 pressed
 474          * GPF5  input 0=button 3 pressed
 475          * GPF6  input 0=button 2 pressed
 476          * GPF7  input 0=button 1 pressed
 477          */
 478         __raw_writel(0x0000aaaa, S3C2410_GPFCON);
 479         __raw_writel(0x00000000, S3C2410_GPFDAT);
 480         __raw_writel(0x000000ff, S3C2410_GPFUP);
 481
 482         /* GPG0  input RS232 DCD/DSR/RI
 483          * GPG1  input 1=USB gadget port has power from a host
 484          * GPG2  N30 input -- unknown function
 485          *       N35/PiN input 0=headphones plugged in, 1=not plugged in
 486          * GPG3  N30 output -- unknown function
 487          *       N35/PiN input with unknown function
 488          * GPG4  N30 output 0=MMC enabled, 1=MMC disabled
 489          * GPG5  N30 output 0=BlueTooth chip disabled, 1=enabled
 490          *       N35/PiN input joystick right
 491          * GPG6  N30 output 0=blue led on, 1=off
 492          *       N35/PiN input joystick left
 493          * GPG7  input 0=thumbwheel pressed
 494          * GPG8  input 0=thumbwheel down
 495          * GPG9  input 0=thumbwheel up
 496          * GPG10 input SD/MMC write protect switch
 497          * GPG11 N30 input -- unknown function
 498          *       N35 output 0=GPS antenna powered, 1=not powered
 499          *       PiN output -- unknown function
 500          * GPG12-15 touch screen functions
 501          *
 502          * The pullups differ between the models, so enable all
 503          * pullups that are enabled on any of the models.
 504          */
 505         if (machine_is_n30())
 506                 __raw_writel(0xff0a956a, S3C2410_GPGCON);
 507         if (machine_is_n35())
 508                 __raw_writel(0xff4aa92a, S3C2410_GPGCON);
 509         __raw_writel(0x0000e800, S3C2410_GPGDAT);
 510         __raw_writel(0x0000f86f, S3C2410_GPGUP);
 511
 512         /* GPH0/1/2/3 RS232 serial port
 513          * GPH4/5 IrDA serial port
 514          * GPH6/7  N30 BlueTooth serial port
 515          *         N35/PiN GPS receiver
 516          * GPH8 input -- unknown function
 517          * GPH9 CLKOUT0 HCLK -- unknown use
 518          * GPH10 CLKOUT1 FCLK -- unknown use
 519          *
 520          * The pull ups for H6/H7 are enabled on N30 but not on the
 521          * N35/PiN.  I suppose is useful for a budget model of the N30
 522          * with no bluetooth.  It doesn't hurt to have the pull ups
 523          * enabled on the N35, so leave them enabled for all models.
 524          */
 525         __raw_writel(0x0028aaaa, S3C2410_GPHCON);
 526         __raw_writel(0x000005ef, S3C2410_GPHDAT);
 527         __raw_writel(0x0000063f, S3C2410_GPHUP);
 528 }
 529
 530 static void __init n30_map_io(void)
 531 {
 532         s3c24xx_init_io(n30_iodesc, ARRAY_SIZE(n30_iodesc));
 533         n30_hwinit();
 534         s3c24xx_init_uarts(n30_uartcfgs, ARRAY_SIZE(n30_uartcfgs));
 535         samsung_set_timer_source(SAMSUNG_PWM3, SAMSUNG_PWM4);
 536 }
 537
 538 static void __init n30_init_time(void)
 539 {
 540         s3c2410_init_clocks(12000000);
 541         samsung_timer_init();
 542 }
 543
 544 /* GPB3 is the line that controls the pull-up for the USB D+ line */
 545
 546 static void __init n30_init(void)
 547 {
 548         WARN_ON(gpio_request(S3C2410_GPG(4), "mmc power"));
 549
 550         s3c24xx_fb_set_platdata(&n30_fb_info);
 551         s3c24xx_udc_set_platdata(&n30_udc_cfg);
 552         s3c24xx_mci_set_platdata(&n30_mci_cfg);
 553         s3c_i2c0_set_platdata(&n30_i2ccfg);
 554
 555         /* Turn off suspend on both USB ports, and switch the
 556          * selectable USB port to USB device mode. */
 557
 558         s3c2410_modify_misccr(S3C2410_MISCCR_USBHOST |
 559                               S3C2410_MISCCR_USBSUSPND0 |
 560                               S3C2410_MISCCR_USBSUSPND1, 0x0);
 561
 562         if (machine_is_n30()) {
 563                 /* Turn off suspend on both USB ports, and switch the
 564                  * selectable USB port to USB device mode. */
 565                 s3c2410_modify_misccr(S3C2410_MISCCR_USBHOST |
 566                                       S3C2410_MISCCR_USBSUSPND0 |
 567                                       S3C2410_MISCCR_USBSUSPND1, 0x0);
 568
 569                 platform_add_devices(n30_devices, ARRAY_SIZE(n30_devices));
 570         }
 571
 572         if (machine_is_n35()) {
 573                 /* Turn off suspend and switch the selectable USB port
 574                  * to USB device mode.  Turn on suspend for the host
 575                  * port since it is not connected on the N35.
 576                  *
 577                  * Actually, the host port is available at some pads
 578                  * on the back of the device, so it would actually be
 579                  * possible to add a USB device inside the N35 if you
 580                  * are willing to do some hardware modifications. */
 581                 s3c2410_modify_misccr(S3C2410_MISCCR_USBHOST |
 582                                       S3C2410_MISCCR_USBSUSPND0 |
 583                                       S3C2410_MISCCR_USBSUSPND1,
 584                                       S3C2410_MISCCR_USBSUSPND0);
 585
 586                 platform_add_devices(n35_devices, ARRAY_SIZE(n35_devices));
 587         }
 588 }
 589
 590 MACHINE_START(N30, "Acer-N30")
 591         /* Maintainer: Christer Weinigel <christer@weinigel.se>,
 592                                 Ben Dooks <ben-linux@fluff.org>
 593         */
 594         .atag_offset    = 0x100,
 595         .init_time      = n30_init_time,
 596         .init_machine   = n30_init,
 597         .init_irq       = s3c2410_init_irq,
 598         .map_io         = n30_map_io,
 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      = n30_init_time,
 606         .init_machine   = n30_init,
 607         .init_irq       = s3c2410_init_irq,
 608         .map_io         = n30_map_io,
 609 MACHINE_END