272 lines
6.7 KiB
C
272 lines
6.7 KiB
C
/*
|
|
* (C) Copyright 2010
|
|
* Texas Instruments, <www.ti.com>
|
|
*
|
|
* SPDX-License-Identifier: GPL-2.0+
|
|
*/
|
|
#include <config.h>
|
|
|
|
#include <twl6030.h>
|
|
|
|
static struct twl6030_data *twl;
|
|
|
|
static struct twl6030_data twl6030_info = {
|
|
.chip_type = chip_TWL6030,
|
|
.adc_rbase = GPCH0_LSB,
|
|
.adc_ctrl = CTRL_P2,
|
|
.adc_enable = CTRL_P2_SP2,
|
|
.vbat_mult = TWL6030_VBAT_MULT,
|
|
.vbat_shift = TWL6030_VBAT_SHIFT,
|
|
};
|
|
|
|
static struct twl6030_data twl6032_info = {
|
|
.chip_type = chip_TWL6032,
|
|
.adc_rbase = TWL6032_GPCH0_LSB,
|
|
.adc_ctrl = TWL6032_CTRL_P1,
|
|
.adc_enable = CTRL_P1_SP1,
|
|
.vbat_mult = TWL6032_VBAT_MULT,
|
|
.vbat_shift = TWL6032_VBAT_SHIFT,
|
|
};
|
|
|
|
|
|
static int twl6030_gpadc_read_channel(u8 channel_no)
|
|
{
|
|
u8 lsb = 0;
|
|
u8 msb = 0;
|
|
int ret = 0;
|
|
|
|
ret = twl6030_i2c_read_u8(TWL6030_CHIP_ADC,
|
|
twl->adc_rbase + channel_no * 2, &lsb);
|
|
if (ret)
|
|
return ret;
|
|
|
|
ret = twl6030_i2c_read_u8(TWL6030_CHIP_ADC,
|
|
twl->adc_rbase + 1 + channel_no * 2, &msb);
|
|
if (ret)
|
|
return ret;
|
|
|
|
return (msb << 8) | lsb;
|
|
}
|
|
|
|
static int twl6030_gpadc_sw2_trigger(void)
|
|
{
|
|
u8 val;
|
|
int ret = 0;
|
|
|
|
ret = twl6030_i2c_write_u8(TWL6030_CHIP_ADC,
|
|
twl->adc_ctrl, twl->adc_enable);
|
|
if (ret)
|
|
return ret;
|
|
|
|
/* Waiting until the SW1 conversion ends*/
|
|
val = CTRL_P2_BUSY;
|
|
|
|
while (!((val & CTRL_P2_EOCP2) && (!(val & CTRL_P2_BUSY)))) {
|
|
ret = twl6030_i2c_read_u8(TWL6030_CHIP_ADC,
|
|
twl->adc_ctrl, &val);
|
|
if (ret)
|
|
return ret;
|
|
udelay(1000);
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
void twl6030_power_off(void)
|
|
{
|
|
twl6030_i2c_write_u8(TWL6030_CHIP_PM, TWL6030_PHOENIX_DEV_ON,
|
|
TWL6030_PHOENIX_APP_DEVOFF | TWL6030_PHOENIX_CON_DEVOFF |
|
|
TWL6030_PHOENIX_MOD_DEVOFF);
|
|
}
|
|
|
|
void twl6030_stop_usb_charging(void)
|
|
{
|
|
twl6030_i2c_write_u8(TWL6030_CHIP_CHARGER, CONTROLLER_CTRL1, 0);
|
|
|
|
return;
|
|
}
|
|
|
|
void twl6030_start_usb_charging(void)
|
|
{
|
|
twl6030_i2c_write_u8(TWL6030_CHIP_CHARGER,
|
|
CHARGERUSB_VICHRG, CHARGERUSB_VICHRG_1500);
|
|
twl6030_i2c_write_u8(TWL6030_CHIP_CHARGER,
|
|
CHARGERUSB_CINLIMIT, CHARGERUSB_CIN_LIMIT_NONE);
|
|
twl6030_i2c_write_u8(TWL6030_CHIP_CHARGER,
|
|
CONTROLLER_INT_MASK, MBAT_TEMP);
|
|
twl6030_i2c_write_u8(TWL6030_CHIP_CHARGER,
|
|
CHARGERUSB_INT_MASK, MASK_MCHARGERUSB_THMREG);
|
|
twl6030_i2c_write_u8(TWL6030_CHIP_CHARGER,
|
|
CHARGERUSB_VOREG, CHARGERUSB_VOREG_4P0);
|
|
twl6030_i2c_write_u8(TWL6030_CHIP_CHARGER,
|
|
CHARGERUSB_CTRL2, CHARGERUSB_CTRL2_VITERM_400);
|
|
twl6030_i2c_write_u8(TWL6030_CHIP_CHARGER, CHARGERUSB_CTRL1, TERM);
|
|
/* Enable USB charging */
|
|
twl6030_i2c_write_u8(TWL6030_CHIP_CHARGER,
|
|
CONTROLLER_CTRL1, CONTROLLER_CTRL1_EN_CHARGER);
|
|
return;
|
|
}
|
|
|
|
int twl6030_get_battery_current(void)
|
|
{
|
|
int battery_current = 0;
|
|
u8 msb = 0;
|
|
u8 lsb = 0;
|
|
|
|
twl6030_i2c_read_u8(TWL6030_CHIP_CHARGER, FG_REG_11, &msb);
|
|
twl6030_i2c_read_u8(TWL6030_CHIP_CHARGER, FG_REG_10, &lsb);
|
|
battery_current = ((msb << 8) | lsb);
|
|
|
|
/* convert 10 bit signed number to 16 bit signed number */
|
|
if (battery_current >= 0x2000)
|
|
battery_current = (battery_current - 0x4000);
|
|
|
|
battery_current = battery_current * 3000 / 4096;
|
|
printf("Battery Current: %d mA\n", battery_current);
|
|
|
|
return battery_current;
|
|
}
|
|
|
|
int twl6030_get_battery_voltage(void)
|
|
{
|
|
int battery_volt = 0;
|
|
int ret = 0;
|
|
u8 vbatch;
|
|
|
|
if (twl->chip_type == chip_TWL6030) {
|
|
vbatch = TWL6030_GPADC_VBAT_CHNL;
|
|
} else {
|
|
ret = twl6030_i2c_write_u8(TWL6030_CHIP_ADC,
|
|
TWL6032_GPSELECT_ISB,
|
|
TWL6032_GPADC_VBAT_CHNL);
|
|
if (ret)
|
|
return ret;
|
|
vbatch = 0;
|
|
}
|
|
|
|
/* Start GPADC SW conversion */
|
|
ret = twl6030_gpadc_sw2_trigger();
|
|
if (ret) {
|
|
printf("Failed to convert battery voltage\n");
|
|
return ret;
|
|
}
|
|
|
|
/* measure Vbat voltage */
|
|
battery_volt = twl6030_gpadc_read_channel(vbatch);
|
|
if (battery_volt < 0) {
|
|
printf("Failed to read battery voltage\n");
|
|
return ret;
|
|
}
|
|
battery_volt = (battery_volt * twl->vbat_mult) >> twl->vbat_shift;
|
|
printf("Battery Voltage: %d mV\n", battery_volt);
|
|
|
|
return battery_volt;
|
|
}
|
|
|
|
void twl6030_init_battery_charging(void)
|
|
{
|
|
u8 val = 0;
|
|
int battery_volt = 0;
|
|
int ret = 0;
|
|
|
|
ret = twl6030_i2c_read_u8(TWL6030_CHIP_USB, USB_PRODUCT_ID_LSB, &val);
|
|
if (ret) {
|
|
puts("twl6030_init_battery_charging(): could not determine chip!\n");
|
|
return;
|
|
}
|
|
if (val == 0x30) {
|
|
twl = &twl6030_info;
|
|
} else if (val == 0x32) {
|
|
twl = &twl6032_info;
|
|
} else {
|
|
puts("twl6030_init_battery_charging(): unsupported chip type\n");
|
|
return;
|
|
}
|
|
|
|
/* Enable VBAT measurement */
|
|
if (twl->chip_type == chip_TWL6030) {
|
|
twl6030_i2c_write_u8(TWL6030_CHIP_PM, MISC1, VBAT_MEAS);
|
|
twl6030_i2c_write_u8(TWL6030_CHIP_ADC,
|
|
TWL6030_GPADC_CTRL,
|
|
GPADC_CTRL_SCALER_DIV4);
|
|
} else {
|
|
twl6030_i2c_write_u8(TWL6030_CHIP_ADC,
|
|
TWL6032_GPADC_CTRL2,
|
|
GPADC_CTRL2_CH18_SCALER_EN);
|
|
}
|
|
|
|
/* Enable GPADC module */
|
|
ret = twl6030_i2c_write_u8(TWL6030_CHIP_CHARGER, TOGGLE1, FGS | GPADCS);
|
|
if (ret) {
|
|
printf("Failed to enable GPADC\n");
|
|
return;
|
|
}
|
|
|
|
battery_volt = twl6030_get_battery_voltage();
|
|
if (battery_volt < 0)
|
|
return;
|
|
|
|
if (battery_volt < 3000)
|
|
printf("Main battery voltage too low!\n");
|
|
|
|
/* Check for the presence of USB charger */
|
|
twl6030_i2c_read_u8(TWL6030_CHIP_CHARGER, CONTROLLER_STAT1, &val);
|
|
|
|
/* check for battery presence indirectly via Fuel gauge */
|
|
if ((val & VBUS_DET) && (battery_volt < 3300))
|
|
twl6030_start_usb_charging();
|
|
|
|
return;
|
|
}
|
|
|
|
void twl6030_power_mmc_init(int dev_index)
|
|
{
|
|
u8 value = 0;
|
|
|
|
if (dev_index == 0) {
|
|
/* 3.0V voltage output for VMMC */
|
|
twl6030_i2c_write_u8(TWL6030_CHIP_PM, TWL6030_VMMC_CFG_VOLTAGE,
|
|
TWL6030_CFG_VOLTAGE_30);
|
|
|
|
/* Enable P1 output for VMMC */
|
|
twl6030_i2c_write_u8(TWL6030_CHIP_PM, TWL6030_VMMC_CFG_STATE,
|
|
TWL6030_CFG_STATE_P1 | TWL6030_CFG_STATE_ON);
|
|
} else if (dev_index == 1) {
|
|
twl6030_i2c_read_u8(TWL6030_CHIP_PM, TWL6030_PH_STS_BOOT,
|
|
&value);
|
|
/* BOOT2 indicates 1.8V/2.8V VAUX1 for eMMC */
|
|
if (value & TWL6030_PH_STS_BOOT2) {
|
|
/* 1.8V voltage output for VAUX1 */
|
|
twl6030_i2c_write_u8(TWL6030_CHIP_PM, TWL6030_VAUX1_CFG_VOLTAGE,
|
|
TWL6030_CFG_VOLTAGE_18);
|
|
} else {
|
|
/* 2.8V voltage output for VAUX1 */
|
|
twl6030_i2c_write_u8(TWL6030_CHIP_PM, TWL6030_VAUX1_CFG_VOLTAGE,
|
|
TWL6030_CFG_VOLTAGE_28);
|
|
}
|
|
|
|
/* Enable P1 output for VAUX */
|
|
twl6030_i2c_write_u8(TWL6030_CHIP_PM, TWL6030_VAUX1_CFG_STATE,
|
|
TWL6030_CFG_STATE_P1 | TWL6030_CFG_STATE_ON);
|
|
}
|
|
}
|
|
|
|
void twl6030_usb_device_settings()
|
|
{
|
|
u8 value = 0;
|
|
|
|
/* 3.3V voltage output for VUSB */
|
|
twl6030_i2c_write_u8(TWL6030_CHIP_PM, TWL6030_VUSB_CFG_VOLTAGE,
|
|
TWL6030_CFG_VOLTAGE_33);
|
|
|
|
/* Enable P1 output for VUSB */
|
|
twl6030_i2c_write_u8(TWL6030_CHIP_PM, TWL6030_VUSB_CFG_STATE,
|
|
TWL6030_CFG_STATE_P1 | TWL6030_CFG_STATE_ON);
|
|
|
|
/* Select the input supply for VUSB regulator */
|
|
twl6030_i2c_read_u8(TWL6030_CHIP_PM, TWL6030_MISC2, &value);
|
|
value |= TWL6030_MISC2_VUSB_IN_VSYS;
|
|
value &= ~TWL6030_MISC2_VUSB_IN_PMID;
|
|
twl6030_i2c_write_u8(TWL6030_CHIP_PM, TWL6030_MISC2, value);
|
|
}
|