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nuttx/drivers/power/axp202.c
daviepeng 3b5914f57b add support for power management ic axp202
2021-09-07 13:42:54 +08:00

720 lines
18 KiB
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/****************************************************************************
* drivers/power/axp202.c
*
* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements. See the NOTICE file distributed with
* this work for additional information regarding copyright ownership. The
* ASF licenses this file to you under the Apache License, Version 2.0 (the
* "License"); you may not use this file except in compliance with the
* License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
* WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
* License for the specific language governing permissions and limitations
* under the License.
*
****************************************************************************/
/****************************************************************************
* Included Files
****************************************************************************/
#include <nuttx/config.h>
#include <sys/types.h>
#include <stdint.h>
#include <stdbool.h>
#include <errno.h>
#include <debug.h>
#include <assert.h>
#include <nuttx/kmalloc.h>
#include <nuttx/i2c/i2c_master.h>
#include <nuttx/power/battery_charger.h>
#include <nuttx/power/axp202.h>
#if defined(CONFIG_I2C) && defined(CONFIG_I2C_AXP202)
/****************************************************************************
* Private type
****************************************************************************/
struct axp202_dev_s
{
/* The common part of the battery driver visible to the upper-half driver */
FAR const struct battery_charger_operations_s *ops; /* Battery operations */
sem_t batsem; /* Enforce mutually exclusive access */
/* Data fields specific to the lower half axp202 driver follow */
FAR struct i2c_master_s *i2c; /* I2C interface */
uint8_t addr; /* I2C address */
uint32_t frequency; /* I2C frequency */
};
/****************************************************************************
* Private Function Prototypes
****************************************************************************/
/* I2C support */
static int axp202_getreg8(FAR struct axp202_dev_s *priv, uint8_t regaddr,
FAR uint8_t *regval);
static int axp202_putreg8(FAR struct axp202_dev_s *priv, uint8_t regaddr,
uint8_t regval);
/* Battery driver lower half methods */
static int axp202_state(FAR struct battery_charger_dev_s *dev,
FAR int * status);
static int axp202_health(FAR struct battery_charger_dev_s *dev,
FAR int * health);
static int axp202_online(FAR struct battery_charger_dev_s *dev,
FAR bool * status);
static int axp202_voltage(FAR struct battery_charger_dev_s *dev, int value);
static int axp202_current(FAR struct battery_charger_dev_s *dev, int value);
static int axp202_input_current(FAR struct battery_charger_dev_s *dev,
int value);
static int axp202_operate(FAR struct battery_charger_dev_s *dev,
uintptr_t param);
static int axp202_set_ldo2_valtage(FAR struct axp202_dev_s *dev,
int voltage);
static int axp202_set_ldo3_valtage(FAR struct axp202_dev_s *dev,
int voltage);
static int axp202_set_ldo4_valtage(FAR struct axp202_dev_s *dev,
int voltage);
static int axp202_set_dc2_valtage(FAR struct axp202_dev_s *dev,
int voltage);
static int axp202_set_dc2_valtage(FAR struct axp202_dev_s *dev,
int voltage);
/****************************************************************************
* Private Data
****************************************************************************/
static const struct battery_charger_operations_s g_axp202ops =
{
axp202_state,
axp202_health,
axp202_online,
axp202_voltage,
axp202_current,
axp202_input_current,
axp202_operate
};
/****************************************************************************
* Private Functions
****************************************************************************/
static int axp202_getreg8(FAR struct axp202_dev_s *priv, uint8_t regaddr,
FAR uint8_t *regval)
{
struct i2c_config_s config;
int ret;
/* Sanity check */
DEBUGASSERT(priv != NULL);
DEBUGASSERT(regval != NULL);
/* Set up the I2C configuration */
config.frequency = priv->frequency;
config.address = priv->addr;
config.addrlen = 7;
/* Write the register address */
ret = i2c_write(priv->i2c, &config, &regaddr, sizeof(regaddr));
if (ret < 0)
{
snerr("ERROR: i2c_write failed: %d\n", ret);
return ret;
}
/* Restart and read 8 bits from the register */
ret = i2c_read(priv->i2c, &config, regval, sizeof(*regval));
if (ret < 0)
{
snerr("ERROR: i2c_read failed: %d\n", ret);
return ret;
}
sninfo("addr: %02x value: %02x\n", regaddr, *regval);
return OK;
}
static int axp202_putreg8(FAR struct axp202_dev_s *priv, uint8_t regaddr,
uint8_t regval)
{
struct i2c_config_s config;
uint8_t buffer[2];
int ret;
/* Sanity check */
DEBUGASSERT(priv != NULL);
/* Set up a 2-byte message to send */
buffer[0] = regaddr;
buffer[1] = regval;
/* Set up the I2C configuration */
config.frequency = priv->frequency;
config.address = priv->addr;
config.addrlen = 7;
/* Write the register address followed by the data (no RESTART) */
ret = i2c_write(priv->i2c, &config, buffer, sizeof(buffer));
if (ret < 0)
{
snerr("ERROR: i2c_write failed: %d\n", ret);
return ret;
}
sninfo("addr: %02x value: %02x\n", regaddr, regval);
return OK;
}
static int axp202_state(struct battery_charger_dev_s *dev, int *status)
{
FAR struct axp202_dev_s *priv = (FAR struct axp202_dev_s *)dev;
uint8_t val = 0;
int ret = 0;
/* Only a few of the possible battery states are supported by this driver:
*
* BATTERY_UNKNOWN - Returned on error conditions
* BATTERY_IDLE - This is what will usually be reported
* BATTERY_FULL - This will be reported if the SoC is greater than 95%
* BATTERY_CHARGING and BATTERY_DISCHARGING - I don't think this hardware
* knows anything about current (charging or dischargin).
*
*/
ret = axp202_getreg8(priv, AXP202_MODE_CHGSTATUS, &val);
if (ret != OK)
{
*status = BATTERY_UNKNOWN;
return ret;
}
if (val & (1 << 6))
{
*status = BATTERY_CHARGING;
}
else
{
*status = BATTERY_DISCHARGING;
}
return OK;
}
/****************************************************************************
* Name: axp202_health
*
* Description:
* Return the current battery health state
*
* Note: if more than one fault happened the user needs to call this ioctl
* again to read a new fault, repeat until receive a BATTERY_HEALTH_GOOD.
*
****************************************************************************/
static int axp202_health(FAR struct battery_charger_dev_s *dev,
FAR int * health)
{
FAR struct axp202_dev_s *priv = (FAR struct axp202_dev_s *)dev;
uint8_t val = 0;
int ret = 0;
/* Only a few of the possible states are supported by this driver:
* BATTERY_HEALTH_UNKNOWN - health state is not known
* BATTERY_HEALTH_GOOD - is in good condiction
* BATTERY_HEALTH_DEAD - is dead, nothing we can do
* BATTERY_HEALTH_OVERHEAT - is over recommended temperature
* BATTERY_HEALTH_OVERVOLTAGE - voltage is over recommended level
* BATTERY_HEALTH_UNSPEC_FAIL - charger reported an unspected failure
* BATTERY_HEALTH_COLD - is under recommended temperature
* BATTERY_HEALTH_WD_TMR_EXP - WatchDog Timer Expired
* BATTERY_HEALTH_SAFE_TMR_EXP - Safety Timer Expired
* BATTERY_HEALTH_DISCONNECTED - is not connected
*/
ret = axp202_getreg8(priv, AXP202_MODE_CHGSTATUS, &val);
if (ret < 0)
{
*health = BATTERY_HEALTH_UNKNOWN;
return ret;
}
if (val & (1 << 7))
{
*health = BATTERY_HEALTH_OVERHEAT;
}
else if (!(val & (1 << 5)))
{
*health = BATTERY_HEALTH_DISCONNECTED;
}
else
{
*health = BATTERY_HEALTH_GOOD;
}
return OK;
}
/****************************************************************************
* Name: axp202_online
*
* Description:
* Return true if the batter is online
*
****************************************************************************/
static int axp202_online(struct battery_charger_dev_s *dev, bool *status)
{
FAR struct axp202_dev_s *priv = (FAR struct axp202_dev_s *)dev;
uint8_t val = 0;
int ret = 0;
ret = axp202_getreg8(priv, AXP202_MODE_CHGSTATUS, &val);
if (ret != OK)
{
return ret;
}
if (val & (1 << 5))
{
*status = true;
}
else
{
*status = false;
}
return OK;
}
/****************************************************************************
* Name: axp202_voltage
*
* Description:
* Set battery charger voltage
*
****************************************************************************/
static int axp202_voltage(FAR struct battery_charger_dev_s *dev, int value)
{
FAR struct axp202_dev_s *priv = (FAR struct axp202_dev_s *)dev;
int ret;
uint8_t reg = 0;
/* Set voltage to battery charger */
ret = axp202_getreg8(priv, AXP202_CHARGE1, &reg);
if (ret != OK)
{
return ret;
}
reg &= ~(3 << 5);
switch (value)
{
case 4100:
reg |= (0 << 5);
break;
case 4150:
reg |= (1 << 5);
break;
case 4200:
reg |= (2 << 5);
break;
case 4360:
reg |= (3 << 5);
break;
default:
return -EINVAL;
}
ret = axp202_putreg8(priv, AXP202_CHARGE1, reg);
if (ret != OK)
{
return ret;
}
return OK;
}
/****************************************************************************
* Name: axp202_current
*
* Description:
* Set the battery charger current rate for charging
*
****************************************************************************/
static int axp202_current(FAR struct battery_charger_dev_s *dev, int value)
{
FAR struct axp202_dev_s *priv = (FAR struct axp202_dev_s *)dev;
int ret;
uint8_t reg = 0;
/* Set current to battery charger */
ret = axp202_getreg8(priv, AXP202_CHARGE1, &reg);
if (ret != OK)
{
return ret;
}
/**
* Charge current setting
* Icharge= [300+(Bit3-0)*100] mA
*/
value = (value - 300) / 100;
value &= 0x0f;
reg &= 0xf0;
reg |= value;
ret = axp202_putreg8(priv, AXP202_CHARGE1, reg);
if (ret != OK)
{
return ret;
}
return OK;
}
/****************************************************************************
* Name: axp202_input_current
*
* Description:
* Set the power-supply input current limit
*
****************************************************************************/
static int axp202_input_current(FAR struct battery_charger_dev_s *dev,
int value)
{
FAR struct axp202_dev_s *priv = (FAR struct axp202_dev_s *)dev;
int ret;
uint8_t reg = 0;
ret = axp202_getreg8(priv, AXP202_IPS_SET, &reg);
if (ret != OK)
{
return ret;
}
reg &= ~(3 << 0);
switch (value)
{
case BATTERY_INPUT_CURRENT_EXT_LIM:
reg |= (3 << 0);
break;
case 900:
reg |= (0 << 0);
break;
case 500:
reg |= (1 << 0);
break;
case 100:
reg |= (2 << 0);
break;
default:
return -EINVAL;
}
ret = axp202_putreg8(priv, AXP202_IPS_SET, reg);
if (ret != OK)
{
return ret;
}
return OK;
}
/****************************************************************************
* Name: axp202_operate
*
* Description:
* Do miscellaneous battery ioctl()
*
****************************************************************************/
static int axp202_operate(FAR struct battery_charger_dev_s *dev,
uintptr_t param)
{
return -ENOSYS;
}
static int axp202_set_ldo2_valtage(FAR struct axp202_dev_s *priv,
int voltage)
{
uint8_t reg = 0;
axp202_getreg8(priv, AXP202_LDO234_DC23_CTL, &reg);
if (voltage == 0)
{
reg &= ~(1 << 2);
}
else
{
reg |= (1 << 2);
}
axp202_putreg8(priv, AXP202_LDO234_DC23_CTL, reg);
if (voltage != 0)
{
axp202_getreg8(priv, AXP202_LDO24OUT_VOL, &reg);
reg &= ~(0xf << 4);
reg |= ((((voltage - 1800) / 100) & 0x0f) << 4);
axp202_putreg8(priv, AXP202_LDO24OUT_VOL, reg);
}
return OK;
}
static int axp202_set_ldo3_valtage(FAR struct axp202_dev_s *priv,
int voltage)
{
uint8_t reg = 0;
axp202_getreg8(priv, AXP202_LDO234_DC23_CTL, &reg);
if (voltage == 0)
{
reg &= ~(1 << 6);
}
else
{
reg |= (1 << 6);
}
axp202_putreg8(priv, AXP202_LDO234_DC23_CTL, reg);
if (voltage != 0)
{
axp202_getreg8(priv, AXP202_LDO3OUT_VOL, &reg);
reg &= ~(0xf << 4);
reg |= ((((voltage - 700) / 25) & 0x7f) << 0);
axp202_putreg8(priv, AXP202_LDO3OUT_VOL, reg);
}
return OK;
}
static int axp202_set_ldo4_valtage(FAR struct axp202_dev_s *priv,
int voltage)
{
uint8_t reg = 0;
axp202_getreg8(priv, AXP202_LDO234_DC23_CTL, &reg);
if (voltage == 0)
{
reg &= ~(1 << 3);
}
else
{
reg |= (1 << 3);
}
axp202_putreg8(priv, AXP202_LDO234_DC23_CTL, reg);
if (voltage != 0)
{
axp202_getreg8(priv, AXP202_LDO24OUT_VOL, &reg);
reg &= ~(0xf << 0);
switch (voltage)
{
case 1250:
reg |= 0; break;
case 1300:
reg |= 1; break;
case 1400:
reg |= 2; break;
case 1500:
reg |= 3; break;
case 1600:
reg |= 4; break;
case 1700:
reg |= 5; break;
case 1800:
reg |= 6; break;
case 1900:
reg |= 7; break;
case 2000:
reg |= 8; break;
case 2500:
reg |= 9; break;
case 2700:
reg |= 10; break;
case 2800:
reg |= 11; break;
case 3000:
reg |= 12; break;
case 3100:
reg |= 13; break;
case 3200:
reg |= 14; break;
case 3300:
reg |= 15; break;
default:
break;
}
axp202_putreg8(priv, AXP202_LDO24OUT_VOL, reg);
}
return OK;
}
static int axp202_set_dc2_valtage(FAR struct axp202_dev_s *priv,
int voltage)
{
uint8_t reg = 0;
axp202_getreg8(priv, AXP202_LDO234_DC23_CTL, &reg);
if (voltage == 0)
{
reg &= ~(1 << 4);
}
else
{
reg |= (1 << 4);
}
axp202_putreg8(priv, AXP202_LDO234_DC23_CTL, reg);
if (voltage != 0)
{
axp202_getreg8(priv, AXP202_DC2OUT_VOL, &reg);
reg &= ~(0xf << 4);
reg |= ((((voltage - 700) / 25) & 0x3f) << 0);
axp202_putreg8(priv, AXP202_DC2OUT_VOL, reg);
}
return OK;
}
static int axp202_set_dc3_valtage(FAR struct axp202_dev_s *priv,
int voltage)
{
uint8_t reg = 0;
axp202_getreg8(priv, AXP202_LDO234_DC23_CTL, &reg);
if (voltage == 0)
{
reg &= ~(1 << 1);
}
else
{
reg |= (1 << 1);
}
axp202_putreg8(priv, AXP202_LDO234_DC23_CTL, reg);
if (voltage != 0)
{
axp202_getreg8(priv, AXP202_DC3OUT_VOL, &reg);
reg &= ~(0xf << 4);
reg |= ((((voltage - 700) / 25) & 0x7f) << 0);
axp202_putreg8(priv, AXP202_DC3OUT_VOL, reg);
}
return OK;
}
/****************************************************************************
* Public Functions
****************************************************************************/
FAR struct battery_charger_dev_s *
axp202_initialize(FAR struct i2c_master_s *i2c, uint8_t addr,
uint32_t frequency)
{
FAR struct axp202_dev_s *priv;
uint8_t chipid = 0;
/* Initialize the axp202 device structure */
priv = (FAR struct axp202_dev_s *)kmm_zalloc(sizeof(struct axp202_dev_s));
if (priv)
{
/* Initialize the axp202 device structure */
priv->ops = &g_axp202ops;
priv->i2c = i2c;
priv->addr = addr;
priv->frequency = frequency;
}
axp202_getreg8(priv, AXP202_IC_TYPE, &chipid);
if (AXP202_CHIP_ID != chipid)
{
kmm_free(priv);
return NULL;
}
/* Initialize ldo2 output voltage */
axp202_set_ldo2_valtage(priv, CONFIG_AXP202_LDO2_VOLTAGE);
/* Initialize ldo3 output voltage */
axp202_set_ldo3_valtage(priv, CONFIG_AXP202_LDO3_VOLTAGE);
/* Initialize ldo4 output voltage */
axp202_set_ldo4_valtage(priv, CONFIG_AXP202_LDO4_VOLTAGE);
/* Initialize dc2 output voltage */
axp202_set_dc2_valtage(priv, CONFIG_AXP202_DC2_VOLTAGE);
/* Initialize dc3 output voltage */
axp202_set_dc3_valtage(priv, CONFIG_AXP202_DC3_VOLTAGE);
return (FAR struct battery_charger_dev_s *)priv;
}
#endif /* CONFIG_I2C && CONFIG_I2C_AXP202 */
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