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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: Wu Zhangjin <wuzhangjin@gmail.com> Cc: linux-mips@linux-mips.org Patchwork: http://patchwork.linux-mips.org/patch/684/ Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
This commit is contained in:
Wu Zhangjin
Ralf Baechle
parent
599a89459f
commit
ec614d80b5
@ -2,7 +2,7 @@
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# Makefile for lemote loongson2f family machines
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#
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obj-y += irq.o reset.o
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obj-y += irq.o reset.o ec_kb3310b.o
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#
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# Suspend Support
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130
arch/mips/loongson/lemote-2f/ec_kb3310b.c
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130
arch/mips/loongson/lemote-2f/ec_kb3310b.c
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/*
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* Basic KB3310B Embedded Controller support for the YeeLoong 2F netbook
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*
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* Copyright (C) 2008 Lemote Inc.
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* Author: liujl <liujl@lemote.com>, 2008-04-20
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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 as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*/
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#include <linux/module.h>
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#include <linux/spinlock.h>
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#include <linux/delay.h>
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#include "ec_kb3310b.h"
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static DEFINE_SPINLOCK(index_access_lock);
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static DEFINE_SPINLOCK(port_access_lock);
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unsigned char ec_read(unsigned short addr)
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{
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unsigned char value;
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unsigned long flags;
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spin_lock_irqsave(&index_access_lock, flags);
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outb((addr & 0xff00) >> 8, EC_IO_PORT_HIGH);
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outb((addr & 0x00ff), EC_IO_PORT_LOW);
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value = inb(EC_IO_PORT_DATA);
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spin_unlock_irqrestore(&index_access_lock, flags);
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return value;
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}
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EXPORT_SYMBOL_GPL(ec_read);
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void ec_write(unsigned short addr, unsigned char val)
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{
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unsigned long flags;
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spin_lock_irqsave(&index_access_lock, flags);
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outb((addr & 0xff00) >> 8, EC_IO_PORT_HIGH);
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outb((addr & 0x00ff), EC_IO_PORT_LOW);
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outb(val, EC_IO_PORT_DATA);
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/* flush the write action */
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inb(EC_IO_PORT_DATA);
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spin_unlock_irqrestore(&index_access_lock, flags);
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return;
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}
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EXPORT_SYMBOL_GPL(ec_write);
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/*
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* This function is used for EC command writes and corresponding status queries.
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*/
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int ec_query_seq(unsigned char cmd)
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{
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int timeout;
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unsigned char status;
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unsigned long flags;
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int ret = 0;
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spin_lock_irqsave(&port_access_lock, flags);
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/* make chip goto reset mode */
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udelay(EC_REG_DELAY);
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outb(cmd, EC_CMD_PORT);
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udelay(EC_REG_DELAY);
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/* check if the command is received by ec */
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timeout = EC_CMD_TIMEOUT;
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status = inb(EC_STS_PORT);
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while (timeout-- && (status & (1 << 1))) {
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status = inb(EC_STS_PORT);
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udelay(EC_REG_DELAY);
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}
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if (timeout <= 0) {
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printk(KERN_ERR "%s: deadable error : timeout...\n", __func__);
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ret = -EINVAL;
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} else
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printk(KERN_INFO
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"(%x/%d)ec issued command %d status : 0x%x\n",
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timeout, EC_CMD_TIMEOUT - timeout, cmd, status);
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spin_unlock_irqrestore(&port_access_lock, flags);
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return ret;
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}
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EXPORT_SYMBOL_GPL(ec_query_seq);
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/*
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* Send query command to EC to get the proper event number
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*/
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int ec_query_event_num(void)
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{
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return ec_query_seq(CMD_GET_EVENT_NUM);
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}
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EXPORT_SYMBOL(ec_query_event_num);
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/*
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* Get event number from EC
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*
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* NOTE: This routine must follow the query_event_num function in the
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* interrupt.
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*/
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int ec_get_event_num(void)
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{
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int timeout = 100;
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unsigned char value;
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unsigned char status;
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udelay(EC_REG_DELAY);
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status = inb(EC_STS_PORT);
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udelay(EC_REG_DELAY);
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while (timeout-- && !(status & (1 << 0))) {
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status = inb(EC_STS_PORT);
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udelay(EC_REG_DELAY);
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}
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if (timeout <= 0) {
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pr_info("%s: get event number timeout.\n", __func__);
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return -EINVAL;
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}
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value = inb(EC_DAT_PORT);
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udelay(EC_REG_DELAY);
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return value;
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}
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EXPORT_SYMBOL(ec_get_event_num);
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188
arch/mips/loongson/lemote-2f/ec_kb3310b.h
Normal file
188
arch/mips/loongson/lemote-2f/ec_kb3310b.h
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/*
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* KB3310B Embedded Controller
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*
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* Copyright (C) 2008 Lemote Inc.
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* Author: liujl <liujl@lemote.com>, 2008-03-14
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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 as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*/
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#ifndef _EC_KB3310B_H
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#define _EC_KB3310B_H
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extern unsigned char ec_read(unsigned short addr);
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extern void ec_write(unsigned short addr, unsigned char val);
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extern int ec_query_seq(unsigned char cmd);
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extern int ec_query_event_num(void);
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extern int ec_get_event_num(void);
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typedef int (*sci_handler) (int status);
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extern sci_handler yeeloong_report_lid_status;
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#define SCI_IRQ_NUM 0x0A
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/*
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* The following registers are determined by the EC index configuration.
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* 1, fill the PORT_HIGH as EC register high part.
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* 2, fill the PORT_LOW as EC register low part.
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* 3, fill the PORT_DATA as EC register write data or get the data from it.
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*/
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#define EC_IO_PORT_HIGH 0x0381
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#define EC_IO_PORT_LOW 0x0382
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#define EC_IO_PORT_DATA 0x0383
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/*
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* EC delay time is 500us for register and status access
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*/
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#define EC_REG_DELAY 500 /* unit : us */
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#define EC_CMD_TIMEOUT 0x1000
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/*
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* EC access port for SCI communication
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*/
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#define EC_CMD_PORT 0x66
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#define EC_STS_PORT 0x66
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#define EC_DAT_PORT 0x62
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#define CMD_INIT_IDLE_MODE 0xdd
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#define CMD_EXIT_IDLE_MODE 0xdf
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#define CMD_INIT_RESET_MODE 0xd8
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#define CMD_REBOOT_SYSTEM 0x8c
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#define CMD_GET_EVENT_NUM 0x84
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#define CMD_PROGRAM_PIECE 0xda
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/* temperature & fan registers */
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#define REG_TEMPERATURE_VALUE 0xF458
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#define REG_FAN_AUTO_MAN_SWITCH 0xF459
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#define BIT_FAN_AUTO 0
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#define BIT_FAN_MANUAL 1
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#define REG_FAN_CONTROL 0xF4D2
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#define BIT_FAN_CONTROL_ON (1 << 0)
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#define BIT_FAN_CONTROL_OFF (0 << 0)
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#define REG_FAN_STATUS 0xF4DA
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#define BIT_FAN_STATUS_ON (1 << 0)
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#define BIT_FAN_STATUS_OFF (0 << 0)
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#define REG_FAN_SPEED_HIGH 0xFE22
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#define REG_FAN_SPEED_LOW 0xFE23
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#define REG_FAN_SPEED_LEVEL 0xF4CC
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/* fan speed divider */
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#define FAN_SPEED_DIVIDER 480000 /* (60*1000*1000/62.5/2)*/
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/* battery registers */
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#define REG_BAT_DESIGN_CAP_HIGH 0xF77D
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#define REG_BAT_DESIGN_CAP_LOW 0xF77E
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#define REG_BAT_FULLCHG_CAP_HIGH 0xF780
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#define REG_BAT_FULLCHG_CAP_LOW 0xF781
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#define REG_BAT_DESIGN_VOL_HIGH 0xF782
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#define REG_BAT_DESIGN_VOL_LOW 0xF783
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#define REG_BAT_CURRENT_HIGH 0xF784
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#define REG_BAT_CURRENT_LOW 0xF785
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#define REG_BAT_VOLTAGE_HIGH 0xF786
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#define REG_BAT_VOLTAGE_LOW 0xF787
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#define REG_BAT_TEMPERATURE_HIGH 0xF788
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#define REG_BAT_TEMPERATURE_LOW 0xF789
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#define REG_BAT_RELATIVE_CAP_HIGH 0xF492
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#define REG_BAT_RELATIVE_CAP_LOW 0xF493
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#define REG_BAT_VENDOR 0xF4C4
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#define FLAG_BAT_VENDOR_SANYO 0x01
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#define FLAG_BAT_VENDOR_SIMPLO 0x02
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#define REG_BAT_CELL_COUNT 0xF4C6
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#define FLAG_BAT_CELL_3S1P 0x03
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#define FLAG_BAT_CELL_3S2P 0x06
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#define REG_BAT_CHARGE 0xF4A2
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#define FLAG_BAT_CHARGE_DISCHARGE 0x01
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#define FLAG_BAT_CHARGE_CHARGE 0x02
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#define FLAG_BAT_CHARGE_ACPOWER 0x00
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#define REG_BAT_STATUS 0xF4B0
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#define BIT_BAT_STATUS_LOW (1 << 5)
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#define BIT_BAT_STATUS_DESTROY (1 << 2)
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#define BIT_BAT_STATUS_FULL (1 << 1)
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#define BIT_BAT_STATUS_IN (1 << 0)
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#define REG_BAT_CHARGE_STATUS 0xF4B1
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#define BIT_BAT_CHARGE_STATUS_OVERTEMP (1 << 2)
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#define BIT_BAT_CHARGE_STATUS_PRECHG (1 << 1)
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#define REG_BAT_STATE 0xF482
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#define BIT_BAT_STATE_CHARGING (1 << 1)
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#define BIT_BAT_STATE_DISCHARGING (1 << 0)
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#define REG_BAT_POWER 0xF440
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#define BIT_BAT_POWER_S3 (1 << 2)
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#define BIT_BAT_POWER_ON (1 << 1)
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#define BIT_BAT_POWER_ACIN (1 << 0)
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/* other registers */
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/* Audio: rd/wr */
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#define REG_AUDIO_VOLUME 0xF46C
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#define REG_AUDIO_MUTE 0xF4E7
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#define REG_AUDIO_BEEP 0xF4D0
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/* USB port power or not: rd/wr */
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#define REG_USB0_FLAG 0xF461
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#define REG_USB1_FLAG 0xF462
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#define REG_USB2_FLAG 0xF463
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#define BIT_USB_FLAG_ON 1
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#define BIT_USB_FLAG_OFF 0
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/* LID */
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#define REG_LID_DETECT 0xF4BD
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#define BIT_LID_DETECT_ON 1
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#define BIT_LID_DETECT_OFF 0
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/* CRT */
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#define REG_CRT_DETECT 0xF4AD
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#define BIT_CRT_DETECT_PLUG 1
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#define BIT_CRT_DETECT_UNPLUG 0
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/* LCD backlight brightness adjust: 9 levels */
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#define REG_DISPLAY_BRIGHTNESS 0xF4F5
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/* Black screen Status */
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#define BIT_DISPLAY_LCD_ON 1
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#define BIT_DISPLAY_LCD_OFF 0
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/* LCD backlight control: off/restore */
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#define REG_BACKLIGHT_CTRL 0xF7BD
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#define BIT_BACKLIGHT_ON 1
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#define BIT_BACKLIGHT_OFF 0
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/* Reset the machine auto-clear: rd/wr */
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#define REG_RESET 0xF4EC
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#define BIT_RESET_ON 1
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/* Light the led: rd/wr */
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#define REG_LED 0xF4C8
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#define BIT_LED_RED_POWER (1 << 0)
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#define BIT_LED_ORANGE_POWER (1 << 1)
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#define BIT_LED_GREEN_CHARGE (1 << 2)
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#define BIT_LED_RED_CHARGE (1 << 3)
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#define BIT_LED_NUMLOCK (1 << 4)
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/* Test led mode, all led on/off */
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#define REG_LED_TEST 0xF4C2
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#define BIT_LED_TEST_IN 1
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#define BIT_LED_TEST_OUT 0
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/* Camera on/off */
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#define REG_CAMERA_STATUS 0xF46A
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#define BIT_CAMERA_STATUS_ON 1
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#define BIT_CAMERA_STATUS_OFF 0
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#define REG_CAMERA_CONTROL 0xF7B7
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#define BIT_CAMERA_CONTROL_OFF 0
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#define BIT_CAMERA_CONTROL_ON 1
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/* Wlan Status */
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#define REG_WLAN 0xF4FA
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#define BIT_WLAN_ON 1
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#define BIT_WLAN_OFF 0
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#define REG_DISPLAY_LCD 0xF79F
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/* SCI Event Number from EC */
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enum {
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EVENT_LID = 0x23, /* LID open/close */
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EVENT_DISPLAY_TOGGLE, /* Fn+F3 for display switch */
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EVENT_SLEEP, /* Fn+F1 for entering sleep mode */
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EVENT_OVERTEMP, /* Over-temperature happened */
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EVENT_CRT_DETECT, /* CRT is connected */
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EVENT_CAMERA, /* Camera on/off */
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EVENT_USB_OC2, /* USB2 Over Current occurred */
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EVENT_USB_OC0, /* USB0 Over Current occurred */
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EVENT_BLACK_SCREEN, /* Turn on/off backlight */
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EVENT_AUDIO_MUTE, /* Mute on/off */
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EVENT_DISPLAY_BRIGHTNESS,/* LCD backlight brightness adjust */
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EVENT_AC_BAT, /* AC & Battery relative issue */
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EVENT_AUDIO_VOLUME, /* Volume adjust */
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EVENT_WLAN, /* Wlan on/off */
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EVENT_END
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};
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#endif /* !_EC_KB3310B_H */
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