624 lines
16 KiB
C
624 lines
16 KiB
C
/* Machine specific code for the Acer n30, Acer N35, Navman PiN 570,
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* Yakumo AlphaX and Airis NC05 PDAs.
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*
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* Copyright (c) 2003-2005 Simtec Electronics
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* Ben Dooks <ben@simtec.co.uk>
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*
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* Copyright (c) 2005-2008 Christer Weinigel <christer@weinigel.se>
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*
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* There is a wiki with more information about the n30 port at
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* http://handhelds.org/moin/moin.cgi/AcerN30Documentation .
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License version 2 as
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* published by the Free Software Foundation.
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*/
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#include <linux/kernel.h>
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#include <linux/types.h>
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#include <linux/gpio_keys.h>
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#include <linux/init.h>
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#include <linux/gpio.h>
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#include <linux/input.h>
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#include <linux/interrupt.h>
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#include <linux/platform_device.h>
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#include <linux/serial_core.h>
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#include <linux/timer.h>
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#include <linux/io.h>
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#include <linux/mmc/host.h>
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#include <mach/hardware.h>
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#include <asm/irq.h>
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#include <asm/mach-types.h>
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#include <mach/fb.h>
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#include <mach/leds-gpio.h>
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#include <mach/regs-gpio.h>
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#include <mach/regs-lcd.h>
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#include <asm/mach/arch.h>
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#include <asm/mach/irq.h>
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#include <asm/mach/map.h>
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#include <plat/iic.h>
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#include <plat/regs-serial.h>
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#include <plat/clock.h>
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#include <plat/cpu.h>
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#include <plat/devs.h>
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#include <plat/mci.h>
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#include <plat/s3c2410.h>
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#include <plat/udc.h>
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static struct map_desc n30_iodesc[] __initdata = {
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/* nothing here yet */
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};
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static struct s3c2410_uartcfg n30_uartcfgs[] = {
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/* Normal serial port */
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[0] = {
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.hwport = 0,
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.flags = 0,
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.ucon = 0x2c5,
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.ulcon = 0x03,
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.ufcon = 0x51,
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},
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/* IR port */
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[1] = {
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.hwport = 1,
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.flags = 0,
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.uart_flags = UPF_CONS_FLOW,
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.ucon = 0x2c5,
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.ulcon = 0x43,
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.ufcon = 0x51,
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},
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/* On the N30 the bluetooth controller is connected here.
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* On the N35 and variants the GPS receiver is connected here. */
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[2] = {
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.hwport = 2,
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.flags = 0,
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.ucon = 0x2c5,
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.ulcon = 0x03,
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.ufcon = 0x51,
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},
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};
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static void n30_udc_pullup(enum s3c2410_udc_cmd_e cmd)
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{
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switch (cmd) {
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case S3C2410_UDC_P_ENABLE :
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gpio_set_value(S3C2410_GPB(3), 1);
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break;
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case S3C2410_UDC_P_DISABLE :
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gpio_set_value(S3C2410_GPB(3), 0);
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break;
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case S3C2410_UDC_P_RESET :
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break;
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default:
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break;
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}
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}
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static struct s3c2410_udc_mach_info n30_udc_cfg __initdata = {
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.udc_command = n30_udc_pullup,
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.vbus_pin = S3C2410_GPG(1),
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.vbus_pin_inverted = 0,
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};
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static struct gpio_keys_button n30_buttons[] = {
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{
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.gpio = S3C2410_GPF(0),
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.code = KEY_POWER,
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.desc = "Power",
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.active_low = 0,
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},
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{
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.gpio = S3C2410_GPG(9),
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.code = KEY_UP,
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.desc = "Thumbwheel Up",
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.active_low = 0,
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},
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{
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.gpio = S3C2410_GPG(8),
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.code = KEY_DOWN,
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.desc = "Thumbwheel Down",
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.active_low = 0,
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},
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{
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.gpio = S3C2410_GPG(7),
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.code = KEY_ENTER,
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.desc = "Thumbwheel Press",
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.active_low = 0,
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},
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{
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.gpio = S3C2410_GPF(7),
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.code = KEY_HOMEPAGE,
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.desc = "Home",
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.active_low = 0,
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},
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{
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.gpio = S3C2410_GPF(6),
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.code = KEY_CALENDAR,
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.desc = "Calendar",
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.active_low = 0,
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},
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{
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.gpio = S3C2410_GPF(5),
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.code = KEY_ADDRESSBOOK,
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.desc = "Contacts",
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.active_low = 0,
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},
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{
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.gpio = S3C2410_GPF(4),
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.code = KEY_MAIL,
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.desc = "Mail",
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.active_low = 0,
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},
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};
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static struct gpio_keys_platform_data n30_button_data = {
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.buttons = n30_buttons,
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.nbuttons = ARRAY_SIZE(n30_buttons),
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};
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static struct platform_device n30_button_device = {
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.name = "gpio-keys",
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.id = -1,
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.dev = {
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.platform_data = &n30_button_data,
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}
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};
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static struct gpio_keys_button n35_buttons[] = {
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{
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.gpio = S3C2410_GPF(0),
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.code = KEY_POWER,
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.type = EV_PWR,
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.desc = "Power",
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.active_low = 0,
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.wakeup = 1,
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},
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{
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.gpio = S3C2410_GPG(9),
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.code = KEY_UP,
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.desc = "Joystick Up",
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.active_low = 0,
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},
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{
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.gpio = S3C2410_GPG(8),
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.code = KEY_DOWN,
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.desc = "Joystick Down",
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.active_low = 0,
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},
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{
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.gpio = S3C2410_GPG(6),
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.code = KEY_DOWN,
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.desc = "Joystick Left",
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.active_low = 0,
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},
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{
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.gpio = S3C2410_GPG(5),
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.code = KEY_DOWN,
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.desc = "Joystick Right",
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.active_low = 0,
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},
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{
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.gpio = S3C2410_GPG(7),
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.code = KEY_ENTER,
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.desc = "Joystick Press",
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.active_low = 0,
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},
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{
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.gpio = S3C2410_GPF(7),
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.code = KEY_HOMEPAGE,
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.desc = "Home",
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.active_low = 0,
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},
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{
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.gpio = S3C2410_GPF(6),
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.code = KEY_CALENDAR,
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.desc = "Calendar",
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.active_low = 0,
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},
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{
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.gpio = S3C2410_GPF(5),
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.code = KEY_ADDRESSBOOK,
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.desc = "Contacts",
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.active_low = 0,
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},
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{
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.gpio = S3C2410_GPF(4),
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.code = KEY_MAIL,
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.desc = "Mail",
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.active_low = 0,
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},
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{
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.gpio = S3C2410_GPF(3),
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.code = SW_RADIO,
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.desc = "GPS Antenna",
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.active_low = 0,
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},
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{
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.gpio = S3C2410_GPG(2),
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.code = SW_HEADPHONE_INSERT,
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.desc = "Headphone",
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.active_low = 0,
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},
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};
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static struct gpio_keys_platform_data n35_button_data = {
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.buttons = n35_buttons,
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.nbuttons = ARRAY_SIZE(n35_buttons),
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};
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static struct platform_device n35_button_device = {
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.name = "gpio-keys",
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.id = -1,
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.num_resources = 0,
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.dev = {
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.platform_data = &n35_button_data,
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}
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};
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/* This is the bluetooth LED on the device. */
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static struct s3c24xx_led_platdata n30_blue_led_pdata = {
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.name = "blue_led",
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.gpio = S3C2410_GPG(6),
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.def_trigger = "",
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};
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/* This is the blue LED on the device. Originaly used to indicate GPS activity
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* by flashing. */
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static struct s3c24xx_led_platdata n35_blue_led_pdata = {
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.name = "blue_led",
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.gpio = S3C2410_GPD(8),
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.def_trigger = "",
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};
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/* This LED is driven by the battery microcontroller, and is blinking
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* red, blinking green or solid green when the battery is low,
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* charging or full respectively. By driving GPD9 low, it's possible
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* to force the LED to blink red, so call that warning LED. */
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static struct s3c24xx_led_platdata n30_warning_led_pdata = {
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.name = "warning_led",
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.flags = S3C24XX_LEDF_ACTLOW,
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.gpio = S3C2410_GPD(9),
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.def_trigger = "",
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};
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static struct s3c24xx_led_platdata n35_warning_led_pdata = {
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.name = "warning_led",
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.flags = S3C24XX_LEDF_ACTLOW | S3C24XX_LEDF_TRISTATE,
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.gpio = S3C2410_GPD(9),
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.def_trigger = "",
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};
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static struct platform_device n30_blue_led = {
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.name = "s3c24xx_led",
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.id = 1,
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.dev = {
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.platform_data = &n30_blue_led_pdata,
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},
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};
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static struct platform_device n35_blue_led = {
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.name = "s3c24xx_led",
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.id = 1,
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.dev = {
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.platform_data = &n35_blue_led_pdata,
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},
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};
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static struct platform_device n30_warning_led = {
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.name = "s3c24xx_led",
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.id = 2,
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.dev = {
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.platform_data = &n30_warning_led_pdata,
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},
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};
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static struct platform_device n35_warning_led = {
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.name = "s3c24xx_led",
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.id = 2,
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.dev = {
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.platform_data = &n35_warning_led_pdata,
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},
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};
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static struct s3c2410fb_display n30_display __initdata = {
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.type = S3C2410_LCDCON1_TFT,
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.width = 240,
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.height = 320,
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.pixclock = 170000,
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.xres = 240,
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.yres = 320,
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.bpp = 16,
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.left_margin = 3,
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.right_margin = 40,
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.hsync_len = 40,
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.upper_margin = 2,
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.lower_margin = 3,
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.vsync_len = 2,
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.lcdcon5 = S3C2410_LCDCON5_INVVLINE | S3C2410_LCDCON5_INVVFRAME,
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};
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static struct s3c2410fb_mach_info n30_fb_info __initdata = {
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.displays = &n30_display,
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.num_displays = 1,
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.default_display = 0,
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.lpcsel = 0x06,
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};
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static void n30_sdi_set_power(unsigned char power_mode, unsigned short vdd)
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{
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switch (power_mode) {
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case MMC_POWER_ON:
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case MMC_POWER_UP:
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gpio_set_value(S3C2410_GPG(4), 1);
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break;
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case MMC_POWER_OFF:
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default:
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gpio_set_value(S3C2410_GPG(4), 0);
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break;
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}
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}
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static struct s3c24xx_mci_pdata n30_mci_cfg __initdata = {
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.gpio_detect = S3C2410_GPF(1),
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.gpio_wprotect = S3C2410_GPG(10),
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.ocr_avail = MMC_VDD_32_33,
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.set_power = n30_sdi_set_power,
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};
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static struct platform_device *n30_devices[] __initdata = {
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&s3c_device_lcd,
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&s3c_device_wdt,
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&s3c_device_i2c0,
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&s3c_device_iis,
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&s3c_device_ohci,
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&s3c_device_rtc,
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&s3c_device_usbgadget,
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&s3c_device_sdi,
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&n30_button_device,
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&n30_blue_led,
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&n30_warning_led,
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};
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static struct platform_device *n35_devices[] __initdata = {
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&s3c_device_lcd,
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&s3c_device_wdt,
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&s3c_device_i2c0,
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&s3c_device_iis,
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&s3c_device_rtc,
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&s3c_device_usbgadget,
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&s3c_device_sdi,
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&n35_button_device,
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&n35_blue_led,
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&n35_warning_led,
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};
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static struct s3c2410_platform_i2c __initdata n30_i2ccfg = {
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.flags = 0,
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.slave_addr = 0x10,
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.frequency = 10*1000,
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};
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/* Lots of hardcoded stuff, but it sets up the hardware in a useful
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* state so that we can boot Linux directly from flash. */
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static void __init n30_hwinit(void)
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{
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/* GPA0-11 special functions -- unknown what they do
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* GPA12 N30 special function -- unknown what it does
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* N35/PiN output -- unknown what it does
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*
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* A12 is nGCS1 on the N30 and an output on the N35/PiN. I
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* don't think it does anything useful on the N30, so I ought
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* to make it an output there too since it always driven to 0
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* as far as I can tell. */
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if (machine_is_n30())
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__raw_writel(0x007fffff, S3C2410_GPACON);
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if (machine_is_n35())
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__raw_writel(0x007fefff, S3C2410_GPACON);
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__raw_writel(0x00000000, S3C2410_GPADAT);
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/* GPB0 TOUT0 backlight level
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* GPB1 output 1=backlight on
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* GPB2 output IrDA enable 0=transceiver enabled, 1=disabled
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* GPB3 output USB D+ pull up 0=disabled, 1=enabled
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* GPB4 N30 output -- unknown function
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* N30/PiN GPS control 0=GPS enabled, 1=GPS disabled
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* GPB5 output -- unknown function
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* GPB6 input -- unknown function
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* GPB7 output -- unknown function
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* GPB8 output -- probably LCD driver enable
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* GPB9 output -- probably LCD VSYNC driver enable
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* GPB10 output -- probably LCD HSYNC driver enable
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*/
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__raw_writel(0x00154556, S3C2410_GPBCON);
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__raw_writel(0x00000750, S3C2410_GPBDAT);
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__raw_writel(0x00000073, S3C2410_GPBUP);
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/* GPC0 input RS232 DCD/DSR/RI
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* GPC1 LCD
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* GPC2 output RS232 DTR?
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* GPC3 input RS232 DCD/DSR/RI
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* GPC4 LCD
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* GPC5 output 0=NAND write enabled, 1=NAND write protect
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* GPC6 input -- unknown function
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* GPC7 input charger status 0=charger connected
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* this input can be triggered by power on the USB device
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* port too, but will go back to disconnected soon after.
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* GPC8 N30/N35 output -- unknown function, always driven to 1
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* PiN input -- unknown function, always read as 1
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* Make it an input with a pull up for all models.
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* GPC9-15 LCD
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*/
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__raw_writel(0xaaa80618, S3C2410_GPCCON);
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__raw_writel(0x0000014c, S3C2410_GPCDAT);
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__raw_writel(0x0000fef2, S3C2410_GPCUP);
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/* GPD0 input -- unknown function
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* GPD1-D7 LCD
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* GPD8 N30 output -- unknown function
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* N35/PiN output 1=GPS LED on
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* GPD9 output 0=power led blinks red, 1=normal power led function
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* GPD10 output -- unknown function
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* GPD11-15 LCD drivers
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*/
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__raw_writel(0xaa95aaa4, S3C2410_GPDCON);
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__raw_writel(0x00000601, S3C2410_GPDDAT);
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__raw_writel(0x0000fbfe, S3C2410_GPDUP);
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/* GPE0-4 I2S audio bus
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* GPE5-10 SD/MMC bus
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* E11-13 outputs -- unknown function, probably power management
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* E14-15 I2C bus connected to the battery controller
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*/
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__raw_writel(0xa56aaaaa, S3C2410_GPECON);
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__raw_writel(0x0000efc5, S3C2410_GPEDAT);
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__raw_writel(0x0000f81f, S3C2410_GPEUP);
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/* GPF0 input 0=power button pressed
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* GPF1 input SD/MMC switch 0=card present
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* GPF2 N30 1=reset button pressed (inverted compared to the rest)
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* N35/PiN 0=reset button pressed
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* GPF3 N30/PiN input -- unknown function
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* N35 input GPS antenna position, 0=antenna closed, 1=open
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* GPF4 input 0=button 4 pressed
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* GPF5 input 0=button 3 pressed
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* GPF6 input 0=button 2 pressed
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* GPF7 input 0=button 1 pressed
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*/
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__raw_writel(0x0000aaaa, S3C2410_GPFCON);
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__raw_writel(0x00000000, S3C2410_GPFDAT);
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__raw_writel(0x000000ff, S3C2410_GPFUP);
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/* GPG0 input RS232 DCD/DSR/RI
|
|
* GPG1 input 1=USB gadget port has power from a host
|
|
* GPG2 N30 input -- unknown function
|
|
* N35/PiN input 0=headphones plugged in, 1=not plugged in
|
|
* GPG3 N30 output -- unknown function
|
|
* N35/PiN input with unknown function
|
|
* GPG4 N30 output 0=MMC enabled, 1=MMC disabled
|
|
* GPG5 N30 output 0=BlueTooth chip disabled, 1=enabled
|
|
* N35/PiN input joystick right
|
|
* GPG6 N30 output 0=blue led on, 1=off
|
|
* N35/PiN input joystick left
|
|
* GPG7 input 0=thumbwheel pressed
|
|
* GPG8 input 0=thumbwheel down
|
|
* GPG9 input 0=thumbwheel up
|
|
* GPG10 input SD/MMC write protect switch
|
|
* GPG11 N30 input -- unknown function
|
|
* N35 output 0=GPS antenna powered, 1=not powered
|
|
* PiN output -- unknown function
|
|
* GPG12-15 touch screen functions
|
|
*
|
|
* The pullups differ between the models, so enable all
|
|
* pullups that are enabled on any of the models.
|
|
*/
|
|
if (machine_is_n30())
|
|
__raw_writel(0xff0a956a, S3C2410_GPGCON);
|
|
if (machine_is_n35())
|
|
__raw_writel(0xff4aa92a, S3C2410_GPGCON);
|
|
__raw_writel(0x0000e800, S3C2410_GPGDAT);
|
|
__raw_writel(0x0000f86f, S3C2410_GPGUP);
|
|
|
|
/* GPH0/1/2/3 RS232 serial port
|
|
* GPH4/5 IrDA serial port
|
|
* GPH6/7 N30 BlueTooth serial port
|
|
* N35/PiN GPS receiver
|
|
* GPH8 input -- unknown function
|
|
* GPH9 CLKOUT0 HCLK -- unknown use
|
|
* GPH10 CLKOUT1 FCLK -- unknown use
|
|
*
|
|
* The pull ups for H6/H7 are enabled on N30 but not on the
|
|
* N35/PiN. I suppose is useful for a budget model of the N30
|
|
* with no bluetooh. It doesn't hurt to have the pull ups
|
|
* enabled on the N35, so leave them enabled for all models.
|
|
*/
|
|
__raw_writel(0x0028aaaa, S3C2410_GPHCON);
|
|
__raw_writel(0x000005ef, S3C2410_GPHDAT);
|
|
__raw_writel(0x0000063f, S3C2410_GPHUP);
|
|
}
|
|
|
|
static void __init n30_map_io(void)
|
|
{
|
|
s3c24xx_init_io(n30_iodesc, ARRAY_SIZE(n30_iodesc));
|
|
n30_hwinit();
|
|
s3c24xx_init_clocks(0);
|
|
s3c24xx_init_uarts(n30_uartcfgs, ARRAY_SIZE(n30_uartcfgs));
|
|
}
|
|
|
|
/* GPB3 is the line that controls the pull-up for the USB D+ line */
|
|
|
|
static void __init n30_init(void)
|
|
{
|
|
WARN_ON(gpio_request(S3C2410_GPG(4), "mmc power"));
|
|
|
|
s3c24xx_fb_set_platdata(&n30_fb_info);
|
|
s3c24xx_udc_set_platdata(&n30_udc_cfg);
|
|
s3c24xx_mci_set_platdata(&n30_mci_cfg);
|
|
s3c_i2c0_set_platdata(&n30_i2ccfg);
|
|
|
|
/* Turn off suspend on both USB ports, and switch the
|
|
* selectable USB port to USB device mode. */
|
|
|
|
s3c2410_modify_misccr(S3C2410_MISCCR_USBHOST |
|
|
S3C2410_MISCCR_USBSUSPND0 |
|
|
S3C2410_MISCCR_USBSUSPND1, 0x0);
|
|
|
|
if (machine_is_n30()) {
|
|
/* Turn off suspend on both USB ports, and switch the
|
|
* selectable USB port to USB device mode. */
|
|
s3c2410_modify_misccr(S3C2410_MISCCR_USBHOST |
|
|
S3C2410_MISCCR_USBSUSPND0 |
|
|
S3C2410_MISCCR_USBSUSPND1, 0x0);
|
|
|
|
platform_add_devices(n30_devices, ARRAY_SIZE(n30_devices));
|
|
}
|
|
|
|
if (machine_is_n35()) {
|
|
/* Turn off suspend and switch the selectable USB port
|
|
* to USB device mode. Turn on suspend for the host
|
|
* port since it is not connected on the N35.
|
|
*
|
|
* Actually, the host port is available at some pads
|
|
* on the back of the device, so it would actually be
|
|
* possible to add a USB device inside the N35 if you
|
|
* are willing to do some hardware modifications. */
|
|
s3c2410_modify_misccr(S3C2410_MISCCR_USBHOST |
|
|
S3C2410_MISCCR_USBSUSPND0 |
|
|
S3C2410_MISCCR_USBSUSPND1,
|
|
S3C2410_MISCCR_USBSUSPND0);
|
|
|
|
platform_add_devices(n35_devices, ARRAY_SIZE(n35_devices));
|
|
}
|
|
|
|
WARN_ON(gpio_request(S3C2410_GPB(3), "udc pup"));
|
|
gpio_direction_output(S3C2410_GPB(3), 0);
|
|
}
|
|
|
|
MACHINE_START(N30, "Acer-N30")
|
|
/* Maintainer: Christer Weinigel <christer@weinigel.se>,
|
|
Ben Dooks <ben-linux@fluff.org>
|
|
*/
|
|
.boot_params = S3C2410_SDRAM_PA + 0x100,
|
|
.timer = &s3c24xx_timer,
|
|
.init_machine = n30_init,
|
|
.init_irq = s3c24xx_init_irq,
|
|
.map_io = n30_map_io,
|
|
MACHINE_END
|
|
|
|
MACHINE_START(N35, "Acer-N35")
|
|
/* Maintainer: Christer Weinigel <christer@weinigel.se>
|
|
*/
|
|
.boot_params = S3C2410_SDRAM_PA + 0x100,
|
|
.timer = &s3c24xx_timer,
|
|
.init_machine = n30_init,
|
|
.init_irq = s3c24xx_init_irq,
|
|
.map_io = n30_map_io,
|
|
MACHINE_END
|