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charger/oz26786: support different PSYS current gains

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This commit is contained in:
Jeremy Soller
2023-05-03 10:41:36 -06:00
parent 93c2784eb3
commit e6b8eb4c42
1 changed files with 17 additions and 2 deletions
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19
src/board/system76/common/charger/oz26786.c
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@ -56,6 +56,21 @@
#error Invalid adapter RSENSE value
#endif
// PSYS gain in nA/W
#ifndef CHARGER_PSYS_GAIN
#define CHARGER_PSYS_GAIN 1000
#endif
#if CHARGER_PSYS_GAIN == 1000
#define CHARGE_OPTION_2_PSYS_GAIN (0 << 8)
#elif CHARGER_PSYS_GAIN == 500
#define CHARGE_OPTION_2_PSYS_GAIN (1 << 8)
#elif CHARGER_PSYS_GAIN == 250
#define CHARGE_OPTION_2_PSYS_GAIN (2 << 8)
#elif CHARGER_PSYS_GAIN == 2000
#define CHARGE_OPTION_2_PSYS_GAIN (3 << 8)
#else
#error Invalid CHARGER_PSYS_GAIN value
#endif
// clang-format on
// Sense resistor values in milliohms.
@ -86,7 +101,7 @@ int16_t battery_charger_disable(void) {
// Set charge option 2 to PSYS enable
//TODO: needed when charging disabled?
res = smbus_write(CHARGER_ADDRESS, REG_CHARGE_OPTION_2, CHARGE_OPTION_2_PSYS_EN);
res = smbus_write(CHARGER_ADDRESS, REG_CHARGE_OPTION_2, CHARGE_OPTION_2_PSYS_EN | CHARGE_OPTION_2_PSYS_GAIN);
if (res < 0)
return res;
@ -130,7 +145,7 @@ int16_t battery_charger_enable(void) {
return res;
// Set charge option 2 to PSYS enable
res = smbus_write(CHARGER_ADDRESS, REG_CHARGE_OPTION_2, CHARGE_OPTION_2_PSYS_EN);
res = smbus_write(CHARGER_ADDRESS, REG_CHARGE_OPTION_2, CHARGE_OPTION_2_PSYS_EN | CHARGE_OPTION_2_PSYS_GAIN);
if (res < 0)
return res;