sravan/system76-embedded-controller
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Disable watchdog when charging

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This commit is contained in:
Jeremy Soller 2019-11-27 12:16:55 -07:00
parent 465e865793
commit fceb98342b
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GPG Key ID: E988B49EE78A7FB1
1 changed files with 29 additions and 0 deletions
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29
src/board/system76/galp3-c/battery.c
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@ -9,9 +9,29 @@ int smbus_write(uint8_t address, uint8_t command, uint16_t data) {
return i2c_set(address, command, (uint8_t *)&data, 2);
}
// ChargeOption0 flags
// Low Power Mode Enable
#define SBC_EN_LWPWR ((uint16_t)(1 << 15))
// Watchdog Timer Adjust
#define SBC_WDTMR_ADJ_175S ((uint16_t)(0b11 << 13))
// Switching Frequency
#define SBC_PWM_FREQ_800KHZ ((uint16_t)(0b01 << 8))
// IDCHG Amplifier Gain
#define SBC_IDCHC_GAIN ((uint16_t)(1 << 3))
int battery_charger_disable(void) {
int res = 0;
// Set charge option 0 with 175s watchdog
res = smbus_write(
0x09,
0x12,
SBC_EN_LWPWR |
SBC_WDTMR_ADJ_175S |
SBC_PWM_FREQ_800KHZ |
SBC_IDCHC_GAIN
);
// Disable charge current
res = smbus_write(0x09, 0x14, 0);
if (res < 0) return res;
@ -37,6 +57,15 @@ int battery_charger_enable(void) {
res = smbus_write(0x09, 0x15, 0x3300);
if (res < 0) return res;
// Set charge option 0 with watchdog disabled
res = smbus_write(
0x09,
0x12,
SBC_EN_LWPWR |
SBC_PWM_FREQ_800KHZ |
SBC_IDCHC_GAIN
);
return 0;
}