1 /* Machine specific code for the Acer n30, Acer N35, Navman PiN 570,
2 * Yakumo AlphaX and Airis NC05 PDAs.
4 * Copyright (c) 2003-2005 Simtec Electronics
5 * Ben Dooks <ben@simtec.co.uk>
7 * Copyright (c) 2005-2008 Christer Weinigel <christer@weinigel.se>
9 * There is a wiki with more information about the n30 port at
10 * http://handhelds.org/moin/moin.cgi/AcerN30Documentation .
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.
17 #include <linux/kernel.h>
18 #include <linux/types.h>
20 #include <linux/gpio_keys.h>
21 #include <linux/init.h>
22 #include <linux/gpio.h>
23 #include <linux/input.h>
24 #include <linux/interrupt.h>
25 #include <linux/platform_device.h>
26 #include <linux/serial_core.h>
27 #include <linux/timer.h>
29 #include <linux/mmc/host.h>
31 #include <mach/hardware.h>
33 #include <asm/mach-types.h>
36 #include <linux/platform_data/leds-s3c24xx.h>
37 #include <mach/regs-gpio.h>
38 #include <mach/regs-lcd.h>
40 #include <asm/mach/arch.h>
41 #include <asm/mach/irq.h>
42 #include <asm/mach/map.h>
44 #include <linux/platform_data/i2c-s3c2410.h>
45 #include <plat/regs-serial.h>
47 #include <plat/clock.h>
49 #include <plat/devs.h>
50 #include <linux/platform_data/mmc-s3cmci.h>
51 #include <linux/platform_data/usb-s3c2410_udc.h>
55 static struct map_desc n30_iodesc[] __initdata = {
56 /* nothing here yet */
59 static struct s3c2410_uartcfg n30_uartcfgs[] = {
60 /* Normal serial port */
72 .uart_flags = UPF_CONS_FLOW,
77 /* On the N30 the bluetooth controller is connected here.
78 * On the N35 and variants the GPS receiver is connected here. */
88 static struct s3c2410_udc_mach_info n30_udc_cfg __initdata = {
89 .vbus_pin = S3C2410_GPG(1),
90 .vbus_pin_inverted = 0,
91 .pullup_pin = S3C2410_GPB(3),
94 static struct gpio_keys_button n30_buttons[] = {
96 .gpio = S3C2410_GPF(0),
102 .gpio = S3C2410_GPG(9),
104 .desc = "Thumbwheel Up",
108 .gpio = S3C2410_GPG(8),
110 .desc = "Thumbwheel Down",
114 .gpio = S3C2410_GPG(7),
116 .desc = "Thumbwheel Press",
120 .gpio = S3C2410_GPF(7),
121 .code = KEY_HOMEPAGE,
126 .gpio = S3C2410_GPF(6),
127 .code = KEY_CALENDAR,
132 .gpio = S3C2410_GPF(5),
133 .code = KEY_ADDRESSBOOK,
138 .gpio = S3C2410_GPF(4),
145 static struct gpio_keys_platform_data n30_button_data = {
146 .buttons = n30_buttons,
147 .nbuttons = ARRAY_SIZE(n30_buttons),
150 static struct platform_device n30_button_device = {
154 .platform_data = &n30_button_data,
158 static struct gpio_keys_button n35_buttons[] = {
160 .gpio = S3C2410_GPF(0),
168 .gpio = S3C2410_GPG(9),
170 .desc = "Joystick Up",
174 .gpio = S3C2410_GPG(8),
176 .desc = "Joystick Down",
180 .gpio = S3C2410_GPG(6),
182 .desc = "Joystick Left",
186 .gpio = S3C2410_GPG(5),
188 .desc = "Joystick Right",
192 .gpio = S3C2410_GPG(7),
194 .desc = "Joystick Press",
198 .gpio = S3C2410_GPF(7),
199 .code = KEY_HOMEPAGE,
204 .gpio = S3C2410_GPF(6),
205 .code = KEY_CALENDAR,
210 .gpio = S3C2410_GPF(5),
211 .code = KEY_ADDRESSBOOK,
216 .gpio = S3C2410_GPF(4),
222 .gpio = S3C2410_GPF(3),
224 .desc = "GPS Antenna",
228 .gpio = S3C2410_GPG(2),
229 .code = SW_HEADPHONE_INSERT,
235 static struct gpio_keys_platform_data n35_button_data = {
236 .buttons = n35_buttons,
237 .nbuttons = ARRAY_SIZE(n35_buttons),
240 static struct platform_device n35_button_device = {
245 .platform_data = &n35_button_data,
249 /* This is the bluetooth LED on the device. */
250 static struct s3c24xx_led_platdata n30_blue_led_pdata = {
252 .gpio = S3C2410_GPG(6),
256 /* This is the blue LED on the device. Originally used to indicate GPS activity
258 static struct s3c24xx_led_platdata n35_blue_led_pdata = {
260 .gpio = S3C2410_GPD(8),
264 /* This LED is driven by the battery microcontroller, and is blinking
265 * red, blinking green or solid green when the battery is low,
266 * charging or full respectively. By driving GPD9 low, it's possible
267 * to force the LED to blink red, so call that warning LED. */
268 static struct s3c24xx_led_platdata n30_warning_led_pdata = {
269 .name = "warning_led",
270 .flags = S3C24XX_LEDF_ACTLOW,
271 .gpio = S3C2410_GPD(9),
275 static struct s3c24xx_led_platdata n35_warning_led_pdata = {
276 .name = "warning_led",
277 .flags = S3C24XX_LEDF_ACTLOW | S3C24XX_LEDF_TRISTATE,
278 .gpio = S3C2410_GPD(9),
282 static struct platform_device n30_blue_led = {
283 .name = "s3c24xx_led",
286 .platform_data = &n30_blue_led_pdata,
290 static struct platform_device n35_blue_led = {
291 .name = "s3c24xx_led",
294 .platform_data = &n35_blue_led_pdata,
298 static struct platform_device n30_warning_led = {
299 .name = "s3c24xx_led",
302 .platform_data = &n30_warning_led_pdata,
306 static struct platform_device n35_warning_led = {
307 .name = "s3c24xx_led",
310 .platform_data = &n35_warning_led_pdata,
314 static struct s3c2410fb_display n30_display __initdata = {
315 .type = S3C2410_LCDCON1_TFT,
330 .lcdcon5 = S3C2410_LCDCON5_INVVLINE | S3C2410_LCDCON5_INVVFRAME,
333 static struct s3c2410fb_mach_info n30_fb_info __initdata = {
334 .displays = &n30_display,
336 .default_display = 0,
340 static void n30_sdi_set_power(unsigned char power_mode, unsigned short vdd)
342 switch (power_mode) {
345 gpio_set_value(S3C2410_GPG(4), 1);
349 gpio_set_value(S3C2410_GPG(4), 0);
354 static struct s3c24xx_mci_pdata n30_mci_cfg __initdata = {
355 .gpio_detect = S3C2410_GPF(1),
356 .gpio_wprotect = S3C2410_GPG(10),
357 .ocr_avail = MMC_VDD_32_33,
358 .set_power = n30_sdi_set_power,
361 static struct platform_device *n30_devices[] __initdata = {
368 &s3c_device_usbgadget,
375 static struct platform_device *n35_devices[] __initdata = {
381 &s3c_device_usbgadget,
388 static struct s3c2410_platform_i2c __initdata n30_i2ccfg = {
391 .frequency = 10*1000,
394 /* Lots of hardcoded stuff, but it sets up the hardware in a useful
395 * state so that we can boot Linux directly from flash. */
396 static void __init n30_hwinit(void)
398 /* GPA0-11 special functions -- unknown what they do
399 * GPA12 N30 special function -- unknown what it does
400 * N35/PiN output -- unknown what it does
402 * A12 is nGCS1 on the N30 and an output on the N35/PiN. I
403 * don't think it does anything useful on the N30, so I ought
404 * to make it an output there too since it always driven to 0
405 * as far as I can tell. */
406 if (machine_is_n30())
407 __raw_writel(0x007fffff, S3C2410_GPACON);
408 if (machine_is_n35())
409 __raw_writel(0x007fefff, S3C2410_GPACON);
410 __raw_writel(0x00000000, S3C2410_GPADAT);
412 /* GPB0 TOUT0 backlight level
413 * GPB1 output 1=backlight on
414 * GPB2 output IrDA enable 0=transceiver enabled, 1=disabled
415 * GPB3 output USB D+ pull up 0=disabled, 1=enabled
416 * GPB4 N30 output -- unknown function
417 * N30/PiN GPS control 0=GPS enabled, 1=GPS disabled
418 * GPB5 output -- unknown function
419 * GPB6 input -- unknown function
420 * GPB7 output -- unknown function
421 * GPB8 output -- probably LCD driver enable
422 * GPB9 output -- probably LCD VSYNC driver enable
423 * GPB10 output -- probably LCD HSYNC driver enable
425 __raw_writel(0x00154556, S3C2410_GPBCON);
426 __raw_writel(0x00000750, S3C2410_GPBDAT);
427 __raw_writel(0x00000073, S3C2410_GPBUP);
429 /* GPC0 input RS232 DCD/DSR/RI
431 * GPC2 output RS232 DTR?
432 * GPC3 input RS232 DCD/DSR/RI
434 * GPC5 output 0=NAND write enabled, 1=NAND write protect
435 * GPC6 input -- unknown function
436 * GPC7 input charger status 0=charger connected
437 * this input can be triggered by power on the USB device
438 * port too, but will go back to disconnected soon after.
439 * GPC8 N30/N35 output -- unknown function, always driven to 1
440 * PiN input -- unknown function, always read as 1
441 * Make it an input with a pull up for all models.
444 __raw_writel(0xaaa80618, S3C2410_GPCCON);
445 __raw_writel(0x0000014c, S3C2410_GPCDAT);
446 __raw_writel(0x0000fef2, S3C2410_GPCUP);
448 /* GPD0 input -- unknown function
450 * GPD8 N30 output -- unknown function
451 * N35/PiN output 1=GPS LED on
452 * GPD9 output 0=power led blinks red, 1=normal power led function
453 * GPD10 output -- unknown function
454 * GPD11-15 LCD drivers
456 __raw_writel(0xaa95aaa4, S3C2410_GPDCON);
457 __raw_writel(0x00000601, S3C2410_GPDDAT);
458 __raw_writel(0x0000fbfe, S3C2410_GPDUP);
460 /* GPE0-4 I2S audio bus
462 * E11-13 outputs -- unknown function, probably power management
463 * E14-15 I2C bus connected to the battery controller
465 __raw_writel(0xa56aaaaa, S3C2410_GPECON);
466 __raw_writel(0x0000efc5, S3C2410_GPEDAT);
467 __raw_writel(0x0000f81f, S3C2410_GPEUP);
469 /* GPF0 input 0=power button pressed
470 * GPF1 input SD/MMC switch 0=card present
471 * GPF2 N30 1=reset button pressed (inverted compared to the rest)
472 * N35/PiN 0=reset button pressed
473 * GPF3 N30/PiN input -- unknown function
474 * N35 input GPS antenna position, 0=antenna closed, 1=open
475 * GPF4 input 0=button 4 pressed
476 * GPF5 input 0=button 3 pressed
477 * GPF6 input 0=button 2 pressed
478 * GPF7 input 0=button 1 pressed
480 __raw_writel(0x0000aaaa, S3C2410_GPFCON);
481 __raw_writel(0x00000000, S3C2410_GPFDAT);
482 __raw_writel(0x000000ff, S3C2410_GPFUP);
484 /* GPG0 input RS232 DCD/DSR/RI
485 * GPG1 input 1=USB gadget port has power from a host
486 * GPG2 N30 input -- unknown function
487 * N35/PiN input 0=headphones plugged in, 1=not plugged in
488 * GPG3 N30 output -- unknown function
489 * N35/PiN input with unknown function
490 * GPG4 N30 output 0=MMC enabled, 1=MMC disabled
491 * GPG5 N30 output 0=BlueTooth chip disabled, 1=enabled
492 * N35/PiN input joystick right
493 * GPG6 N30 output 0=blue led on, 1=off
494 * N35/PiN input joystick left
495 * GPG7 input 0=thumbwheel pressed
496 * GPG8 input 0=thumbwheel down
497 * GPG9 input 0=thumbwheel up
498 * GPG10 input SD/MMC write protect switch
499 * GPG11 N30 input -- unknown function
500 * N35 output 0=GPS antenna powered, 1=not powered
501 * PiN output -- unknown function
502 * GPG12-15 touch screen functions
504 * The pullups differ between the models, so enable all
505 * pullups that are enabled on any of the models.
507 if (machine_is_n30())
508 __raw_writel(0xff0a956a, S3C2410_GPGCON);
509 if (machine_is_n35())
510 __raw_writel(0xff4aa92a, S3C2410_GPGCON);
511 __raw_writel(0x0000e800, S3C2410_GPGDAT);
512 __raw_writel(0x0000f86f, S3C2410_GPGUP);
514 /* GPH0/1/2/3 RS232 serial port
515 * GPH4/5 IrDA serial port
516 * GPH6/7 N30 BlueTooth serial port
517 * N35/PiN GPS receiver
518 * GPH8 input -- unknown function
519 * GPH9 CLKOUT0 HCLK -- unknown use
520 * GPH10 CLKOUT1 FCLK -- unknown use
522 * The pull ups for H6/H7 are enabled on N30 but not on the
523 * N35/PiN. I suppose is useful for a budget model of the N30
524 * with no bluetooh. It doesn't hurt to have the pull ups
525 * enabled on the N35, so leave them enabled for all models.
527 __raw_writel(0x0028aaaa, S3C2410_GPHCON);
528 __raw_writel(0x000005ef, S3C2410_GPHDAT);
529 __raw_writel(0x0000063f, S3C2410_GPHUP);
532 static void __init n30_map_io(void)
534 s3c24xx_init_io(n30_iodesc, ARRAY_SIZE(n30_iodesc));
536 s3c24xx_init_clocks(0);
537 s3c24xx_init_uarts(n30_uartcfgs, ARRAY_SIZE(n30_uartcfgs));
540 /* GPB3 is the line that controls the pull-up for the USB D+ line */
542 static void __init n30_init(void)
544 WARN_ON(gpio_request(S3C2410_GPG(4), "mmc power"));
546 s3c24xx_fb_set_platdata(&n30_fb_info);
547 s3c24xx_udc_set_platdata(&n30_udc_cfg);
548 s3c24xx_mci_set_platdata(&n30_mci_cfg);
549 s3c_i2c0_set_platdata(&n30_i2ccfg);
551 /* Turn off suspend on both USB ports, and switch the
552 * selectable USB port to USB device mode. */
554 s3c2410_modify_misccr(S3C2410_MISCCR_USBHOST |
555 S3C2410_MISCCR_USBSUSPND0 |
556 S3C2410_MISCCR_USBSUSPND1, 0x0);
558 if (machine_is_n30()) {
559 /* Turn off suspend on both USB ports, and switch the
560 * selectable USB port to USB device mode. */
561 s3c2410_modify_misccr(S3C2410_MISCCR_USBHOST |
562 S3C2410_MISCCR_USBSUSPND0 |
563 S3C2410_MISCCR_USBSUSPND1, 0x0);
565 platform_add_devices(n30_devices, ARRAY_SIZE(n30_devices));
568 if (machine_is_n35()) {
569 /* Turn off suspend and switch the selectable USB port
570 * to USB device mode. Turn on suspend for the host
571 * port since it is not connected on the N35.
573 * Actually, the host port is available at some pads
574 * on the back of the device, so it would actually be
575 * possible to add a USB device inside the N35 if you
576 * are willing to do some hardware modifications. */
577 s3c2410_modify_misccr(S3C2410_MISCCR_USBHOST |
578 S3C2410_MISCCR_USBSUSPND0 |
579 S3C2410_MISCCR_USBSUSPND1,
580 S3C2410_MISCCR_USBSUSPND0);
582 platform_add_devices(n35_devices, ARRAY_SIZE(n35_devices));
586 MACHINE_START(N30, "Acer-N30")
587 /* Maintainer: Christer Weinigel <christer@weinigel.se>,
588 Ben Dooks <ben-linux@fluff.org>
590 .atag_offset = 0x100,
591 .init_time = s3c24xx_timer_init,
592 .init_machine = n30_init,
593 .init_irq = s3c24xx_init_irq,
594 .map_io = n30_map_io,
595 .restart = s3c2410_restart,
598 MACHINE_START(N35, "Acer-N35")
599 /* Maintainer: Christer Weinigel <christer@weinigel.se>
601 .atag_offset = 0x100,
602 .init_time = s3c24xx_timer_init,
603 .init_machine = n30_init,
604 .init_irq = s3c24xx_init_irq,
605 .map_io = n30_map_io,
606 .restart = s3c2410_restart,