985 lines
19 KiB
C
Executable File
985 lines
19 KiB
C
Executable File
/*
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* (C) Copyright 2007-2013
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* Allwinner Technology Co., Ltd. <www.allwinnertech.com>
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* Jerry Wang <wangflord@allwinnertech.com>
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*
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* See file CREDITS for list of people who contributed to this
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* project.
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License as
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* published by the Free Software Foundation; either version 2 of
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* the License, or (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston,
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* MA 02111-1307 USA
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*/
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#include <common.h>
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#include <power/sunxi/axp81X_reg.h>
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#include <power/sunxi/axp.h>
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#include <power/sunxi/pmu.h>
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extern int axp81_set_supply_status(int vol_name, int vol_value, int onoff);
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extern int axp81_set_supply_status_byname(char *vol_name, int vol_value, int onoff);
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extern int axp81_probe_supply_status(int vol_name, int vol_value, int onoff);
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extern int axp81_probe_supply_status_byname(char *vol_name);
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/*
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************************************************************************************************************
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*
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* function
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*
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* 函数名称:
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*
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* 参数列表:
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*
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* 返回值 :
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*
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* 说明 :
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*
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*
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************************************************************************************************************
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*/
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int axp81_probe(void)
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{
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u8 pmu_type;
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axp_i2c_config(SUNXI_AXP_81X, AXP81X_ADDR);
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if(axp_i2c_read(AXP81X_ADDR, BOOT_POWER81X_VERSION, &pmu_type))
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{
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printf("axp read error\n");
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return -1;
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}
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pmu_type &= 0xCF;
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if(pmu_type == 0x41)
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{
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/* pmu type AXP81X */
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tick_printf("PMU: AXP81X\n");
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return 0;
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}
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return -1;
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}
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/*
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************************************************************************************************************
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*
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* function
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*
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* 函数名称:
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*
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* 参数列表:
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*
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* 返回值 :
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||
*
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* 说明 :
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*
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*
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************************************************************************************************************
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*/
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int axp81_set_coulombmeter_onoff(int onoff)
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{
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u8 reg_value;
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if(axp_i2c_read(AXP81X_ADDR,BOOT_POWER81X_FUEL_GAUGE_CTL, ®_value))
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{
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return -1;
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}
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if(!onoff)
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reg_value &= ~(0x01 << 7);
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else
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reg_value |= (0x01 << 7);
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if(axp_i2c_write(AXP81X_ADDR,BOOT_POWER81X_FUEL_GAUGE_CTL,reg_value))
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{
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return -1;
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}
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return 0;
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}
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/*
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************************************************************************************************************
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*
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* function
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*
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* 函数名称:
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||
*
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* 参数列表:
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||
*
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* 返回值 :
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||
*
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* 说明 :
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*
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*
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************************************************************************************************************
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*/
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int axp81_set_charge_control(void)
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{
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u8 reg_value;
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//disable ts adc, enable all other adc
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if(axp_i2c_read(AXP81X_ADDR, BOOT_POWER81X_ADC_EN, ®_value))
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{
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return -1;
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}
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reg_value |= 0xC0;
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if(axp_i2c_write(AXP81X_ADDR, BOOT_POWER81X_ADC_EN, reg_value))
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{
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return -1;
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}
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//enable charge
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if(axp_i2c_read(AXP81X_ADDR, BOOT_POWER81X_CHARGE1, ®_value))
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{
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return -1;
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}
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reg_value |= 0x80;
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if(axp_i2c_write(AXP81X_ADDR, BOOT_POWER81X_CHARGE1, reg_value))
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{
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return -1;
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}
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return 0;
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}
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/*
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************************************************************************************************************
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*
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* function
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*
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* 函数名称:
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||
*
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* 参数列表:
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||
*
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* 返回值 :
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||
*
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* 说明 :
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*
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*
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************************************************************************************************************
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*/
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int axp81_probe_battery_ratio(void)
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{
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u8 reg_value;
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if(axp_i2c_read(AXP81X_ADDR, BOOT_POWER81X_BAT_PERCEN_CAL, ®_value))
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{
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return -1;
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}
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return reg_value & 0x7f;
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}
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/*
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************************************************************************************************************
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*
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* function
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*
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* 函数名称:
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||
*
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||
* 参数列表:
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||
*
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* 返回值 :
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||
*
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* 说明 :
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*
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*
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************************************************************************************************************
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*/
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int axp81_probe_power_status(void)
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{
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u8 reg_value;
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if(axp_i2c_read(AXP81X_ADDR, BOOT_POWER81X_STATUS, ®_value))
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{
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return -1;
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}
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if(reg_value & 0x10) //vbus exist
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{
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return AXP_VBUS_EXIST;
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}
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if(reg_value & 0x40) //dc in exist
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{
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return AXP_DCIN_EXIST;
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}
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return 0;
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}
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/*
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************************************************************************************************************
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*
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* function
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*
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||
* 函数名称:
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||
*
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||
* 参数列表:
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||
*
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||
* 返回值 :
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||
*
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||
* 说明 :
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||
*
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*
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************************************************************************************************************
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*/
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int axp81_probe_battery_exist(void)
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{
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u8 reg_value;
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ulong begin_time, over_time;
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if (axp_i2c_read(AXP81X_ADDR, BOOT_POWER81X_MODE_CHGSTATUS,
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®_value))
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return -1;
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/* indicate whether valid battery detected or not yet,
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1--valide 0--invalid
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*/
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if ((reg_value & 0x10))
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return reg_value&0x20;
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begin_time = get_timer(0);
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over_time = 3000;
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pr_msg("***battery detect invalid, try again***\n");
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while (1) {
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axp_i2c_read(AXP81X_ADDR, BOOT_POWER81X_MODE_CHGSTATUS,
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®_value);
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if ((reg_value & 0x10)) {
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pr_msg("***battery detect used %d ms***\n",
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get_timer(begin_time));
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return reg_value&0x20;
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}
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if (get_timer(begin_time) > over_time) {
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pr_msg("***battery detect overtime***\n");
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return 0;
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}
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mdelay(10);
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}
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return 0;
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}
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/*
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************************************************************************************************************
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*
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||
* function
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||
*
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||
* 函数名称:
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||
*
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||
* 参数列表:
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||
*
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||
* 返回值 :
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||
*
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||
* 说明 :
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||
*
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||
*
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||
************************************************************************************************************
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*/
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int axp81_probe_battery_vol(void)
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{
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u8 reg_value_h, reg_value_l;
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int bat_vol, tmp_value;
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if(axp_i2c_read(AXP81X_ADDR, BOOT_POWER81X_BAT_AVERVOL_H8, ®_value_h))
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{
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return -1;
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}
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if(axp_i2c_read(AXP81X_ADDR, BOOT_POWER81X_BAT_AVERVOL_L4, ®_value_l))
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{
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return -1;
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}
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tmp_value = (reg_value_h << 4) | reg_value_l;
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bat_vol = tmp_value * 11;
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bat_vol /= 10;
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return bat_vol;
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}
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/*
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************************************************************************************************************
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||
*
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||
* function
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||
*
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||
* 函数名称:
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||
*
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||
* 参数列表:
|
||
*
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||
* 返回值 :
|
||
*
|
||
* 说明 :
|
||
*
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||
*
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||
************************************************************************************************************
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||
*/
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int axp81_probe_key(void)
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{
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u8 reg_value;
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if(axp_i2c_read(AXP81X_ADDR, BOOT_POWER81X_INTSTS5, ®_value))
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{
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return -1;
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}
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reg_value &= (0x03<<3);
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if(reg_value)
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{
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if(axp_i2c_write(AXP81X_ADDR, BOOT_POWER81X_INTSTS5, reg_value))
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{
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return -1;
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}
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}
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return (reg_value>>3)&3;
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}
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/*
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||
************************************************************************************************************
|
||
*
|
||
* function
|
||
*
|
||
* 函数名称:
|
||
*
|
||
* 参数列表:
|
||
*
|
||
* 返回值 :
|
||
*
|
||
* 说明 :
|
||
*
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||
*
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||
************************************************************************************************************
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||
*/
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int axp81_probe_pre_sys_mode(void)
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{
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u8 reg_value;
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if(axp_i2c_read(AXP81X_ADDR, BOOT_POWER81X_DATA_BUFFER11, ®_value))
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{
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||
return -1;
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||
}
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||
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||
return reg_value;
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||
}
|
||
/*
|
||
************************************************************************************************************
|
||
*
|
||
* function
|
||
*
|
||
* 函数名称:
|
||
*
|
||
* 参数列表:
|
||
*
|
||
* 返回值 :
|
||
*
|
||
* 说明 :
|
||
*
|
||
*
|
||
************************************************************************************************************
|
||
*/
|
||
int axp81_set_next_sys_mode(int data)
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{
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||
if(axp_i2c_write(AXP81X_ADDR, BOOT_POWER81X_DATA_BUFFER11, (u8)data))
|
||
{
|
||
return -1;
|
||
}
|
||
|
||
return 0;
|
||
}
|
||
/*
|
||
************************************************************************************************************
|
||
*
|
||
* function
|
||
*
|
||
* 函数名称:
|
||
*
|
||
* 参数列表:
|
||
*
|
||
* 返回值 :
|
||
*
|
||
* 说明 :
|
||
*
|
||
*
|
||
************************************************************************************************************
|
||
*/
|
||
int axp81_probe_this_poweron_cause(void)
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||
{
|
||
uchar reg_value;
|
||
|
||
if(axp_i2c_read(AXP81X_ADDR, BOOT_POWER81X_STATUS, ®_value))
|
||
{
|
||
return -1;
|
||
}
|
||
|
||
return reg_value & 0x01;
|
||
}
|
||
/*
|
||
************************************************************************************************************
|
||
*
|
||
* function
|
||
*
|
||
* 函数名称:
|
||
*
|
||
* 参数列表:
|
||
*
|
||
* 返回值 :
|
||
*
|
||
* 说明 :
|
||
*
|
||
*
|
||
************************************************************************************************************
|
||
*/
|
||
int axp81_set_power_off(void)
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||
{
|
||
u8 reg_value;
|
||
|
||
if(axp_i2c_read(AXP81X_ADDR, BOOT_POWER81X_OFF_CTL, ®_value))
|
||
{
|
||
return -1;
|
||
}
|
||
reg_value |= 1 << 7;
|
||
if(axp_i2c_write(AXP81X_ADDR, BOOT_POWER81X_OFF_CTL, reg_value))
|
||
{
|
||
return -1;
|
||
}
|
||
|
||
return 0;
|
||
}
|
||
/*
|
||
************************************************************************************************************
|
||
*
|
||
* function
|
||
*
|
||
* 函数名称:
|
||
*
|
||
* 参数列表:
|
||
*
|
||
* 返回值 :
|
||
*
|
||
* 说明 :
|
||
*
|
||
*
|
||
************************************************************************************************************
|
||
*/
|
||
int axp81_set_power_onoff_vol(int set_vol, int stage)
|
||
{
|
||
u8 reg_value;
|
||
|
||
if(!set_vol)
|
||
{
|
||
if(!stage)
|
||
{
|
||
set_vol = 3300;
|
||
}
|
||
else
|
||
{
|
||
set_vol = 2900;
|
||
}
|
||
}
|
||
if(axp_i2c_read(AXP81X_ADDR, BOOT_POWER81X_VOFF_SET, ®_value))
|
||
{
|
||
return -1;
|
||
}
|
||
reg_value &= 0xf8;
|
||
if(set_vol >= 2600 && set_vol <= 3300)
|
||
{
|
||
reg_value |= (set_vol - 2600)/100;
|
||
}
|
||
else if(set_vol <= 2600)
|
||
{
|
||
reg_value |= 0x00;
|
||
}
|
||
else
|
||
{
|
||
reg_value |= 0x07;
|
||
}
|
||
if(axp_i2c_write(AXP81X_ADDR, BOOT_POWER81X_VOFF_SET, reg_value))
|
||
{
|
||
return -1;
|
||
}
|
||
|
||
return 0;
|
||
}
|
||
/*
|
||
************************************************************************************************************
|
||
*
|
||
* function
|
||
*
|
||
* 函数名称:
|
||
*
|
||
* 参数列表:
|
||
*
|
||
* 返回值 :
|
||
*
|
||
* 说明 :
|
||
*
|
||
*
|
||
************************************************************************************************************
|
||
*/
|
||
int axp81_set_charge_current(int current)
|
||
{
|
||
u8 reg_value;
|
||
int step;
|
||
|
||
if( !current )
|
||
{
|
||
return 0;
|
||
}
|
||
if(axp_i2c_read(AXP81X_ADDR, BOOT_POWER81X_CHARGE1, ®_value))
|
||
{
|
||
return -1;
|
||
}
|
||
reg_value &= ~0x0f;
|
||
if(current > 2800)
|
||
{
|
||
current = 2800;
|
||
}
|
||
else if(current < 200)
|
||
{
|
||
current = 200;
|
||
}
|
||
step = (current/200) - 1; //0-13 ---->200to 2800
|
||
reg_value |= (step & 0x0f);
|
||
|
||
if(axp_i2c_write(AXP81X_ADDR, BOOT_POWER81X_CHARGE1, reg_value))
|
||
{
|
||
return -1;
|
||
}
|
||
|
||
return 0;
|
||
}
|
||
/*
|
||
************************************************************************************************************
|
||
*
|
||
* function
|
||
*
|
||
* 函数名称:
|
||
*
|
||
* 参数列表:
|
||
*
|
||
* 返回值 :
|
||
*
|
||
* 说明 :
|
||
*
|
||
*
|
||
************************************************************************************************************
|
||
*/
|
||
int axp81_probe_charge_current(void)
|
||
{
|
||
uchar reg_value;
|
||
int current;
|
||
|
||
if(axp_i2c_read(AXP81X_ADDR, BOOT_POWER81X_CHARGE1, ®_value))
|
||
{
|
||
return -1;
|
||
}
|
||
reg_value &= 0x0f;
|
||
current = (reg_value + 1) * 200;
|
||
|
||
return current;
|
||
}
|
||
/*
|
||
************************************************************************************************************
|
||
*
|
||
* function
|
||
*
|
||
* 函数名称:
|
||
*
|
||
* 参数列表:
|
||
*
|
||
* 返回值 :
|
||
*
|
||
* 说明 :
|
||
*
|
||
*
|
||
************************************************************************************************************
|
||
*/
|
||
int axp81_set_vbus_cur_limit(int current)
|
||
{
|
||
uchar reg_value;
|
||
|
||
if( !current )
|
||
{
|
||
return 0;
|
||
}
|
||
|
||
//set bus current limit off
|
||
if(axp_i2c_read(AXP81X_ADDR, BOOT_POWER81X_CHARGE3, ®_value))
|
||
{
|
||
return -1;
|
||
}
|
||
reg_value &= 0x0f;
|
||
//bit7-bit4: 0-100mA 1-500mA 2-900mA 3-1500mA
|
||
// 4-2000mA 5-2500mA 6-3000mA 7-3500mA 8-4000mA
|
||
|
||
if(current >= 4000) //limit to 4000
|
||
{
|
||
reg_value |= 0x80;
|
||
}
|
||
else if(current >= 3500) //limit to 3500
|
||
{
|
||
reg_value |= 0x70;
|
||
}
|
||
else if(current >= 3000) //limit to 3000
|
||
{
|
||
reg_value |= 0x60;
|
||
}
|
||
else if(current >=2500 )//limit to 2500
|
||
{
|
||
reg_value |= 0x50;
|
||
}
|
||
else if(current >=2000 )//limit to 2000
|
||
{
|
||
reg_value |= 0x40;
|
||
}
|
||
else if(current >=1500 )//limit to 1500
|
||
{
|
||
reg_value |= 0x30;
|
||
}
|
||
else if(current >=900 )
|
||
{
|
||
reg_value |= 0x20;
|
||
}
|
||
else if(current >=500 )
|
||
{
|
||
reg_value |= 0x10;
|
||
}
|
||
else if(current >=100 )
|
||
{
|
||
reg_value |= 0x00;
|
||
}
|
||
else
|
||
{
|
||
reg_value |= 0x10;
|
||
}
|
||
|
||
if(axp_i2c_write(AXP81X_ADDR, BOOT_POWER81X_CHARGE3, reg_value))
|
||
{
|
||
return -1;
|
||
}
|
||
|
||
return 0;
|
||
}
|
||
|
||
int axp81_probe_vbus_cur_limit(void)
|
||
{
|
||
uchar reg_value;
|
||
int current = 0;
|
||
|
||
if(axp_i2c_read(AXP81X_ADDR,BOOT_POWER81X_CHARGE3,®_value))
|
||
{
|
||
return -1;
|
||
}
|
||
reg_value &= 0xf0;
|
||
|
||
//bit7-bit4: 0-100mA 1-500mA 2-900mA 3-1500mA
|
||
// 4-2000mA 5-2500mA 6-3000mA 7-3500mA 8-4000mA
|
||
|
||
if(reg_value == 0x80) //limit to 4000
|
||
{
|
||
current = 4000;
|
||
}
|
||
else if(reg_value == 0x70) //limit to 3500
|
||
{
|
||
current = 3500;
|
||
}
|
||
else if(reg_value == 0x60) //limit to 3000
|
||
{
|
||
current = 3000;
|
||
}
|
||
else if(reg_value == 0x50 )//limit to 2500
|
||
{
|
||
current = 2500;
|
||
}
|
||
else if(reg_value == 0x40 )//limit to 2000
|
||
{
|
||
current =2000;
|
||
}
|
||
else if(reg_value == 0x30 )//limit to 1500
|
||
{
|
||
current =1500;
|
||
}
|
||
else if(reg_value == 0x20 )
|
||
{
|
||
current =900;
|
||
}
|
||
else if(reg_value == 0x10 )
|
||
{
|
||
current =500;
|
||
}
|
||
else if(reg_value == 0x00 )
|
||
{
|
||
current =100;
|
||
}
|
||
else
|
||
{
|
||
reg_value |= 0x10;
|
||
}
|
||
printf("limit to %dmA \n",current);
|
||
return current;
|
||
}
|
||
/*
|
||
************************************************************************************************************
|
||
*
|
||
* function
|
||
*
|
||
* 函数名称:
|
||
*
|
||
* 参数列表:
|
||
*
|
||
* 返回值 :
|
||
*
|
||
* 说明 :
|
||
*
|
||
*
|
||
************************************************************************************************************
|
||
*/
|
||
int axp81_set_vbus_vol_limit(int vol)
|
||
{
|
||
uchar reg_value;
|
||
|
||
if( !vol )
|
||
{
|
||
return 0;
|
||
}
|
||
|
||
//set bus vol limit off
|
||
if(axp_i2c_read(AXP81X_ADDR, BOOT_POWER81X_VBUS_SET, ®_value))
|
||
{
|
||
return -1;
|
||
}
|
||
reg_value &= ~(7 << 3);
|
||
|
||
if(vol < 4000)
|
||
{
|
||
vol = 4000;
|
||
}
|
||
else if(vol > 4700)
|
||
{
|
||
vol = 4700;
|
||
}
|
||
reg_value |= ((vol-4000)/100) << 3;
|
||
|
||
if(axp_i2c_write(AXP81X_ADDR, BOOT_POWER81X_VBUS_SET, reg_value))
|
||
{
|
||
return -1;
|
||
}
|
||
|
||
return 0;
|
||
}
|
||
/*
|
||
************************************************************************************************************
|
||
*
|
||
* function
|
||
*
|
||
* 函数名称:
|
||
*
|
||
* 参数列表:
|
||
*
|
||
* 返回值 :
|
||
*
|
||
* 说明 :
|
||
*
|
||
*
|
||
************************************************************************************************************
|
||
*/
|
||
int axp81_probe_int_pending(uchar *addr)
|
||
{
|
||
int i;
|
||
|
||
for(i=0;i<5;i++)
|
||
{
|
||
if(axp_i2c_read(AXP81X_ADDR, BOOT_POWER81X_INTSTS1 + i, addr + i))
|
||
{
|
||
return -1;
|
||
}
|
||
}
|
||
|
||
for(i=0;i<5;i++)
|
||
{
|
||
if(axp_i2c_write(AXP81X_ADDR, BOOT_POWER81X_INTSTS1 + i, 0xff))
|
||
{
|
||
return -1;
|
||
}
|
||
}
|
||
|
||
return 0;
|
||
}
|
||
/*
|
||
************************************************************************************************************
|
||
*
|
||
* function
|
||
*
|
||
* 函数名称:
|
||
*
|
||
* 参数列表:
|
||
*
|
||
* 返回值 :
|
||
*
|
||
* 说明 :
|
||
*
|
||
*
|
||
************************************************************************************************************
|
||
*/
|
||
int axp81_probe_int_enable(uchar *addr)
|
||
{
|
||
int i;
|
||
uchar int_reg = BOOT_POWER81X_INTEN1;
|
||
|
||
for(i=0;i<5;i++)
|
||
{
|
||
if(axp_i2c_read(AXP81X_ADDR, int_reg, addr + i))
|
||
{
|
||
return -1;
|
||
}
|
||
int_reg ++;
|
||
}
|
||
|
||
return 0;
|
||
}
|
||
/*
|
||
************************************************************************************************************
|
||
*
|
||
* function
|
||
*
|
||
* 函数名称:
|
||
*
|
||
* 参数列表:
|
||
*
|
||
* 返回值 :
|
||
*
|
||
* 说明 :
|
||
*
|
||
*
|
||
************************************************************************************************************
|
||
*/
|
||
int axp81_set_int_enable(uchar *addr)
|
||
{
|
||
int i;
|
||
uchar int_reg = BOOT_POWER81X_INTEN1;
|
||
|
||
for(i=0;i<5;i++)
|
||
{
|
||
if(axp_i2c_write(AXP81X_ADDR, int_reg, addr[i]))
|
||
{
|
||
return -1;
|
||
}
|
||
int_reg ++;
|
||
}
|
||
|
||
return 0;
|
||
}
|
||
|
||
int axp81_set_power_reset(void)
|
||
{
|
||
u8 reg_value;
|
||
if(axp_i2c_read(AXP81X_ADDR, BOOT_POWER81X_VOFF_SET, ®_value))
|
||
{
|
||
printf("axp81_set_power_reset: axp_i2c_read error!\n");
|
||
return -1;
|
||
}
|
||
reg_value |= (1<<6);
|
||
printf("axp will reset the system....\n");
|
||
if(axp_i2c_write(AXP81X_ADDR, BOOT_POWER81X_VOFF_SET, reg_value))
|
||
{
|
||
printf("axp81_set_power_reset: axp_i2c_write error!\n");
|
||
return -1;
|
||
}
|
||
return 0;
|
||
}
|
||
|
||
void sunxi_pmu_reset(void)
|
||
{
|
||
if (uboot_spare_head.boot_data.work_mode == WORK_MODE_BOOT) {
|
||
printf("restart system by pmu\n");
|
||
mdelay(2000);
|
||
axp81_set_power_reset();
|
||
while(1);
|
||
}
|
||
}
|
||
|
||
int axp_probe_vbus_type(void)
|
||
{
|
||
u8 reg_value;
|
||
int pmu_bc_en = 0;
|
||
int vbus_type = 0;
|
||
|
||
extern int script_parser_fetch(char *main_name, char *sub_name, int value[], int count);
|
||
extern int get_boot_work_mode(void);
|
||
|
||
/* if enable this function, the vbus current limit will work(set cur limit to 450mA if
|
||
VBUS PC exist). this situation will affect the working status of USB.
|
||
So we cat't enable this function at usb product mode.
|
||
*/
|
||
if(get_boot_work_mode() != WORK_MODE_BOOT)
|
||
{
|
||
return 0;
|
||
}
|
||
if (AXP_VBUS_EXIST != axp81_probe_power_status())
|
||
return SUNXI_VBUS_NULL;
|
||
|
||
script_parser_fetch(PMU_SCRIPT_NAME, "pmu_init_bc_en", &pmu_bc_en, 1);
|
||
|
||
if(!pmu_bc_en)
|
||
{
|
||
return SUNXI_VBUS_PC;
|
||
}
|
||
|
||
/* REG2C: BC module global reg */
|
||
if(axp_i2c_read(AXP81X_ADDR, 0x2C, ®_value))
|
||
{
|
||
return -1;
|
||
}
|
||
reg_value |= (1<<0);
|
||
if(axp_i2c_write(AXP81X_ADDR, 0x2C, reg_value))
|
||
{
|
||
return -1;
|
||
}
|
||
mdelay(1);
|
||
reg_value = 0;
|
||
/* REG2C Bit2: BC detection status*/
|
||
if(axp_i2c_read(AXP81X_ADDR, 0x2C, ®_value))
|
||
{
|
||
return -1;
|
||
}
|
||
/* wait dection finish */
|
||
while(reg_value&0x02)
|
||
{
|
||
udelay(1);
|
||
axp_i2c_read(AXP81X_ADDR, 0x2C, ®_value);
|
||
}
|
||
|
||
/* REG2F: BC detect stauts reg */
|
||
if(axp_i2c_read(AXP81X_ADDR, 0x2F, ®_value))
|
||
{
|
||
return -1;
|
||
}
|
||
|
||
/*
|
||
reg2f: 7-4bits
|
||
001x: SDP - desktop computer
|
||
010x: CDP - laptop
|
||
011x: DCP - adapter
|
||
*/
|
||
reg_value >>=5;
|
||
switch(reg_value)
|
||
{
|
||
case 0x1:
|
||
case 0x2:
|
||
vbus_type = SUNXI_VBUS_PC;
|
||
pr_msg("vbus pc exist\n");
|
||
break;
|
||
case 0x3:
|
||
vbus_type = SUNXI_VBUS_DC;
|
||
pr_msg("vbus dc exist\n");
|
||
default:
|
||
vbus_type = SUNXI_VBUS_PC;
|
||
pr_msg("can't detect vbus type,default is PC\n");
|
||
break;
|
||
}
|
||
return vbus_type;
|
||
}
|
||
|
||
|
||
sunxi_axp_module_init("axp81x", SUNXI_AXP_81X);
|
||
|
||
|