SmartAudio/lichee/brandy/u-boot-2011.09/drivers/power/axp259.c

/*
 * (C) Copyright 2007-2013
 * Allwinner Technology Co., Ltd. <www.allwinnertech.com>
 * Jerry Wang <wangflord@allwinnertech.com>
 *
 * See file CREDITS for list of people who contributed to this
 * project.
 *
 * 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.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.	 See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
 * MA 02111-1307 USA
 */


#include <common.h>
#include <power/axp259_reg.h>
#include "axp.h"
#include <pmu.h>

extern int axp259_set_supply_status(int vol_name, int vol_value, int onoff);
extern int axp259_set_supply_status_byname(char *vol_name, int vol_value, int onoff);
extern int axp259_probe_supply_status(int vol_name, int vol_value, int onoff);
extern int axp259_probe_supply_status_byname(char *vol_name);


int axp259_probe(void)
{
	u8    pmu_type;
	axp_i2c_config(SUNXI_AXP_259, AXP259_ADDR);
	if(axp_i2c_write(AXP259_ADDR,BOOT_POWER259_ADDR_EXTENSION, 0x40))
	{
		printf("axp259 write 0xff error\n");
		return -1;
	}
	if(axp_i2c_read(AXP259_ADDR,BOOT_POWER259_IC_TYPE_NUM, &pmu_type))
	{
		printf("axp259 read error\n");
		return -1;
	}
	printf("pmu_type = %x\n",pmu_type);
	pmu_type &= 0xCF;
	if(pmu_type == 0x04)
	{
		/* pmu type AXP152 */
		tick_printf("PMU: AXP259\n");
		return 0;
	}
	return -1;
}

int axp259_set_coulombmeter_onoff(int onoff)
{
	return 0;
}

int axp259_set_charge_control(void)
{
	return 0;
}

int axp259_probe_battery_exist(void)
{
	u8 reg_value;

	if(axp_i2c_read(AXP259_ADDR, BOOT_POWER259_POWER_SOURCE_STATUS, &reg_value))
	{
		return -1;
	}
	//bit2 -- 0:does't have detected 1: have detected
	if((reg_value & (1<<2)))
	{
		//bit4 -- 0:battery not connected 1: battery connected
		return (reg_value & (1<<4));
	}
	else
	{
		return 0;
	}
}

int axp259_probe_battery_ratio(void)
{
	u8 reg_value;

	if(axp_i2c_read(AXP259_ADDR, BOOT_POWER259_BAT_PERCENTAGE, &reg_value))
	{
		return -1;
	}

	return reg_value & 0x7f;
}

int axp259_probe_power_status(void)
{
	u8 reg_value;

	if(axp_i2c_read(AXP259_ADDR, BOOT_POWER259_POWER_SOURCE_STATUS, &reg_value))
	{
		return -1;
	}

	if(reg_value & 0x1)		//AC in exist
	{
		return AXP_DCIN_EXIST;
	}
	return -1;

}

int axp259_probe_battery_vol(void)
{
	u8 reg_value_h, reg_value_l;
    int bat_vol, temp_value;
    if(axp_i2c_read(AXP259_ADDR, BOOT_POWER259_BAT_VOL_H8, &reg_value_h))
    {
        return -1;
    }
    if(axp_i2c_read(AXP259_ADDR, BOOT_POWER259_BAT_VOL_L4, &reg_value_l))
    {
        return -1;
    }
    //check spec: 6.7 ADC
    temp_value = (reg_value_h << 4) | reg_value_l;
    bat_vol = temp_value * 12;
    bat_vol /= 10;
    
    return bat_vol;
}

int axp259_probe_key(void)
{
    return 0;
}

int axp259_probe_pre_sys_mode(void)
{
	u8  reg_value;
	if(axp_i2c_read(AXP259_ADDR, BOOT_POWER259_DATA_BUFFER10, &reg_value))
	{
		return -1;
	}

	return reg_value;
}

int axp259_set_next_sys_mode(int data)
{
	if(axp_i2c_write(AXP259_ADDR, BOOT_POWER259_DATA_BUFFER10, (u8)data))
	{
		return -1;
	}
	return 0;
}

int axp259_probe_this_poweron_cause(void)
{
	uchar   reg_value;
	if(axp_i2c_read(AXP259_ADDR, BOOT_POWER259_STARTUP_SOURCE, &reg_value))
	{
		return -1;
	}
	if(reg_value&(1<<3)) //startup by PWRON press
	{
		return 0;
	}
	else if(reg_value&(1<<4)) //startup by VACIN
	{
		return 1;
	}
	return reg_value & 0x01;
}

int axp259_set_power_off(void)
{
	u8 reg_addr;
	u8  reg_value;
	printf("axp259_set_power_off\n");
	reg_addr = BOOT_POWER259_RESTART_POWOFF;
	if(axp_i2c_read(AXP259_ADDR, reg_addr, &reg_value))
	{
		printf("axp259_set_power_off read error\n");
		return -1;
	}
	reg_value |= 1 << 6;
	if(axp_i2c_write(AXP259_ADDR, reg_addr, reg_value))
	{
		return -1;
	}
	printf("axp259_set_power_off failed\n");
	return 0;
}

int axp259_set_power_onoff_vol(int set_vol, int stage)
{
	return 0;
}
int axp259_set_charge_current(int current)
{
	return 0;
}
int axp259_probe_charge_current(void)
{
	return 0;
}
int axp259_set_vbus_cur_limit(int current)
{
	return 0;
}

int axp259_probe_vbus_cur_limit(void)
{
 
	return  0;
}
int axp259_set_vbus_vol_limit(int vol)
{
	return 0;
}
int axp259_probe_int_pending(uchar *addr)
{

	return 0;
}

int axp259_probe_int_enable(uchar *addr)
{

	return 0;

}

int axp259_set_int_enable(uchar *addr)
{

	return 0;
}

sunxi_axp_module_init("axp259", SUNXI_AXP_259);