提交 ec614d80 编写于 作者: W Wu Zhangjin 提交者: Ralf Baechle

MIPS: Yeeloong 2F: Add basic EC operations

YeeLoong2F has a KB3310b embedded controller. Add basic operations for
future related drivers and board support.
Signed-off-by: NWu Zhangjin <wuzhangjin@gmail.com>
Cc: linux-mips@linux-mips.org
Patchwork: http://patchwork.linux-mips.org/patch/684/Signed-off-by: NRalf Baechle <ralf@linux-mips.org>
上级 599a8945
......@@ -2,7 +2,7 @@
# Makefile for lemote loongson2f family machines
#
obj-y += irq.o reset.o
obj-y += irq.o reset.o ec_kb3310b.o
#
# Suspend Support
......
/*
* Basic KB3310B Embedded Controller support for the YeeLoong 2F netbook
*
* Copyright (C) 2008 Lemote Inc.
* Author: liujl <liujl@lemote.com>, 2008-04-20
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*/
#include <linux/module.h>
#include <linux/spinlock.h>
#include <linux/delay.h>
#include "ec_kb3310b.h"
static DEFINE_SPINLOCK(index_access_lock);
static DEFINE_SPINLOCK(port_access_lock);
unsigned char ec_read(unsigned short addr)
{
unsigned char value;
unsigned long flags;
spin_lock_irqsave(&index_access_lock, flags);
outb((addr & 0xff00) >> 8, EC_IO_PORT_HIGH);
outb((addr & 0x00ff), EC_IO_PORT_LOW);
value = inb(EC_IO_PORT_DATA);
spin_unlock_irqrestore(&index_access_lock, flags);
return value;
}
EXPORT_SYMBOL_GPL(ec_read);
void ec_write(unsigned short addr, unsigned char val)
{
unsigned long flags;
spin_lock_irqsave(&index_access_lock, flags);
outb((addr & 0xff00) >> 8, EC_IO_PORT_HIGH);
outb((addr & 0x00ff), EC_IO_PORT_LOW);
outb(val, EC_IO_PORT_DATA);
/* flush the write action */
inb(EC_IO_PORT_DATA);
spin_unlock_irqrestore(&index_access_lock, flags);
return;
}
EXPORT_SYMBOL_GPL(ec_write);
/*
* This function is used for EC command writes and corresponding status queries.
*/
int ec_query_seq(unsigned char cmd)
{
int timeout;
unsigned char status;
unsigned long flags;
int ret = 0;
spin_lock_irqsave(&port_access_lock, flags);
/* make chip goto reset mode */
udelay(EC_REG_DELAY);
outb(cmd, EC_CMD_PORT);
udelay(EC_REG_DELAY);
/* check if the command is received by ec */
timeout = EC_CMD_TIMEOUT;
status = inb(EC_STS_PORT);
while (timeout-- && (status & (1 << 1))) {
status = inb(EC_STS_PORT);
udelay(EC_REG_DELAY);
}
if (timeout <= 0) {
printk(KERN_ERR "%s: deadable error : timeout...\n", __func__);
ret = -EINVAL;
} else
printk(KERN_INFO
"(%x/%d)ec issued command %d status : 0x%x\n",
timeout, EC_CMD_TIMEOUT - timeout, cmd, status);
spin_unlock_irqrestore(&port_access_lock, flags);
return ret;
}
EXPORT_SYMBOL_GPL(ec_query_seq);
/*
* Send query command to EC to get the proper event number
*/
int ec_query_event_num(void)
{
return ec_query_seq(CMD_GET_EVENT_NUM);
}
EXPORT_SYMBOL(ec_query_event_num);
/*
* Get event number from EC
*
* NOTE: This routine must follow the query_event_num function in the
* interrupt.
*/
int ec_get_event_num(void)
{
int timeout = 100;
unsigned char value;
unsigned char status;
udelay(EC_REG_DELAY);
status = inb(EC_STS_PORT);
udelay(EC_REG_DELAY);
while (timeout-- && !(status & (1 << 0))) {
status = inb(EC_STS_PORT);
udelay(EC_REG_DELAY);
}
if (timeout <= 0) {
pr_info("%s: get event number timeout.\n", __func__);
return -EINVAL;
}
value = inb(EC_DAT_PORT);
udelay(EC_REG_DELAY);
return value;
}
EXPORT_SYMBOL(ec_get_event_num);
/*
* KB3310B Embedded Controller
*
* Copyright (C) 2008 Lemote Inc.
* Author: liujl <liujl@lemote.com>, 2008-03-14
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*/
#ifndef _EC_KB3310B_H
#define _EC_KB3310B_H
extern unsigned char ec_read(unsigned short addr);
extern void ec_write(unsigned short addr, unsigned char val);
extern int ec_query_seq(unsigned char cmd);
extern int ec_query_event_num(void);
extern int ec_get_event_num(void);
typedef int (*sci_handler) (int status);
extern sci_handler yeeloong_report_lid_status;
#define SCI_IRQ_NUM 0x0A
/*
* The following registers are determined by the EC index configuration.
* 1, fill the PORT_HIGH as EC register high part.
* 2, fill the PORT_LOW as EC register low part.
* 3, fill the PORT_DATA as EC register write data or get the data from it.
*/
#define EC_IO_PORT_HIGH 0x0381
#define EC_IO_PORT_LOW 0x0382
#define EC_IO_PORT_DATA 0x0383
/*
* EC delay time is 500us for register and status access
*/
#define EC_REG_DELAY 500 /* unit : us */
#define EC_CMD_TIMEOUT 0x1000
/*
* EC access port for SCI communication
*/
#define EC_CMD_PORT 0x66
#define EC_STS_PORT 0x66
#define EC_DAT_PORT 0x62
#define CMD_INIT_IDLE_MODE 0xdd
#define CMD_EXIT_IDLE_MODE 0xdf
#define CMD_INIT_RESET_MODE 0xd8
#define CMD_REBOOT_SYSTEM 0x8c
#define CMD_GET_EVENT_NUM 0x84
#define CMD_PROGRAM_PIECE 0xda
/* temperature & fan registers */
#define REG_TEMPERATURE_VALUE 0xF458
#define REG_FAN_AUTO_MAN_SWITCH 0xF459
#define BIT_FAN_AUTO 0
#define BIT_FAN_MANUAL 1
#define REG_FAN_CONTROL 0xF4D2
#define BIT_FAN_CONTROL_ON (1 << 0)
#define BIT_FAN_CONTROL_OFF (0 << 0)
#define REG_FAN_STATUS 0xF4DA
#define BIT_FAN_STATUS_ON (1 << 0)
#define BIT_FAN_STATUS_OFF (0 << 0)
#define REG_FAN_SPEED_HIGH 0xFE22
#define REG_FAN_SPEED_LOW 0xFE23
#define REG_FAN_SPEED_LEVEL 0xF4CC
/* fan speed divider */
#define FAN_SPEED_DIVIDER 480000 /* (60*1000*1000/62.5/2)*/
/* battery registers */
#define REG_BAT_DESIGN_CAP_HIGH 0xF77D
#define REG_BAT_DESIGN_CAP_LOW 0xF77E
#define REG_BAT_FULLCHG_CAP_HIGH 0xF780
#define REG_BAT_FULLCHG_CAP_LOW 0xF781
#define REG_BAT_DESIGN_VOL_HIGH 0xF782
#define REG_BAT_DESIGN_VOL_LOW 0xF783
#define REG_BAT_CURRENT_HIGH 0xF784
#define REG_BAT_CURRENT_LOW 0xF785
#define REG_BAT_VOLTAGE_HIGH 0xF786
#define REG_BAT_VOLTAGE_LOW 0xF787
#define REG_BAT_TEMPERATURE_HIGH 0xF788
#define REG_BAT_TEMPERATURE_LOW 0xF789
#define REG_BAT_RELATIVE_CAP_HIGH 0xF492
#define REG_BAT_RELATIVE_CAP_LOW 0xF493
#define REG_BAT_VENDOR 0xF4C4
#define FLAG_BAT_VENDOR_SANYO 0x01
#define FLAG_BAT_VENDOR_SIMPLO 0x02
#define REG_BAT_CELL_COUNT 0xF4C6
#define FLAG_BAT_CELL_3S1P 0x03
#define FLAG_BAT_CELL_3S2P 0x06
#define REG_BAT_CHARGE 0xF4A2
#define FLAG_BAT_CHARGE_DISCHARGE 0x01
#define FLAG_BAT_CHARGE_CHARGE 0x02
#define FLAG_BAT_CHARGE_ACPOWER 0x00
#define REG_BAT_STATUS 0xF4B0
#define BIT_BAT_STATUS_LOW (1 << 5)
#define BIT_BAT_STATUS_DESTROY (1 << 2)
#define BIT_BAT_STATUS_FULL (1 << 1)
#define BIT_BAT_STATUS_IN (1 << 0)
#define REG_BAT_CHARGE_STATUS 0xF4B1
#define BIT_BAT_CHARGE_STATUS_OVERTEMP (1 << 2)
#define BIT_BAT_CHARGE_STATUS_PRECHG (1 << 1)
#define REG_BAT_STATE 0xF482
#define BIT_BAT_STATE_CHARGING (1 << 1)
#define BIT_BAT_STATE_DISCHARGING (1 << 0)
#define REG_BAT_POWER 0xF440
#define BIT_BAT_POWER_S3 (1 << 2)
#define BIT_BAT_POWER_ON (1 << 1)
#define BIT_BAT_POWER_ACIN (1 << 0)
/* other registers */
/* Audio: rd/wr */
#define REG_AUDIO_VOLUME 0xF46C
#define REG_AUDIO_MUTE 0xF4E7
#define REG_AUDIO_BEEP 0xF4D0
/* USB port power or not: rd/wr */
#define REG_USB0_FLAG 0xF461
#define REG_USB1_FLAG 0xF462
#define REG_USB2_FLAG 0xF463
#define BIT_USB_FLAG_ON 1
#define BIT_USB_FLAG_OFF 0
/* LID */
#define REG_LID_DETECT 0xF4BD
#define BIT_LID_DETECT_ON 1
#define BIT_LID_DETECT_OFF 0
/* CRT */
#define REG_CRT_DETECT 0xF4AD
#define BIT_CRT_DETECT_PLUG 1
#define BIT_CRT_DETECT_UNPLUG 0
/* LCD backlight brightness adjust: 9 levels */
#define REG_DISPLAY_BRIGHTNESS 0xF4F5
/* Black screen Status */
#define BIT_DISPLAY_LCD_ON 1
#define BIT_DISPLAY_LCD_OFF 0
/* LCD backlight control: off/restore */
#define REG_BACKLIGHT_CTRL 0xF7BD
#define BIT_BACKLIGHT_ON 1
#define BIT_BACKLIGHT_OFF 0
/* Reset the machine auto-clear: rd/wr */
#define REG_RESET 0xF4EC
#define BIT_RESET_ON 1
/* Light the led: rd/wr */
#define REG_LED 0xF4C8
#define BIT_LED_RED_POWER (1 << 0)
#define BIT_LED_ORANGE_POWER (1 << 1)
#define BIT_LED_GREEN_CHARGE (1 << 2)
#define BIT_LED_RED_CHARGE (1 << 3)
#define BIT_LED_NUMLOCK (1 << 4)
/* Test led mode, all led on/off */
#define REG_LED_TEST 0xF4C2
#define BIT_LED_TEST_IN 1
#define BIT_LED_TEST_OUT 0
/* Camera on/off */
#define REG_CAMERA_STATUS 0xF46A
#define BIT_CAMERA_STATUS_ON 1
#define BIT_CAMERA_STATUS_OFF 0
#define REG_CAMERA_CONTROL 0xF7B7
#define BIT_CAMERA_CONTROL_OFF 0
#define BIT_CAMERA_CONTROL_ON 1
/* Wlan Status */
#define REG_WLAN 0xF4FA
#define BIT_WLAN_ON 1
#define BIT_WLAN_OFF 0
#define REG_DISPLAY_LCD 0xF79F
/* SCI Event Number from EC */
enum {
EVENT_LID = 0x23, /* LID open/close */
EVENT_DISPLAY_TOGGLE, /* Fn+F3 for display switch */
EVENT_SLEEP, /* Fn+F1 for entering sleep mode */
EVENT_OVERTEMP, /* Over-temperature happened */
EVENT_CRT_DETECT, /* CRT is connected */
EVENT_CAMERA, /* Camera on/off */
EVENT_USB_OC2, /* USB2 Over Current occurred */
EVENT_USB_OC0, /* USB0 Over Current occurred */
EVENT_BLACK_SCREEN, /* Turn on/off backlight */
EVENT_AUDIO_MUTE, /* Mute on/off */
EVENT_DISPLAY_BRIGHTNESS,/* LCD backlight brightness adjust */
EVENT_AC_BAT, /* AC & Battery relative issue */
EVENT_AUDIO_VOLUME, /* Volume adjust */
EVENT_WLAN, /* Wlan on/off */
EVENT_END
};
#endif /* !_EC_KB3310B_H */
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