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exo2: implement the first half of SmcCpuSuspend

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This commit is contained in:
Michael Scire 2020-06-07 19:16:48 -07:00 • committed by SciresM
parent e1835d9ba2
commit 0202a95832
11 changed files with 175 additions and 5 deletions
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27
libraries/libexosphere/source/pmic/pmic_api.cpp
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@ -25,13 +25,17 @@ namespace ams::pmic {
constexpr inline int I2cAddressMarikoMax77812_A = 0x31;
constexpr inline int I2cAddressMarikoMax77812_B = 0x33;
constexpr inline int I2cAddressMax77620Pmic = 0x3C;
/* https://github.com/Atmosphere-NX/Atmosphere/blob/master/emummc/source/power/max77620.h */
/* https://github.com/Atmosphere-NX/Atmosphere/blob/master/emummc/source/power/max7762x.h */
/* TODO: Find datasheet, link to it instead. */
/* NOTE: Tentatively, Max77620 "mostly" matches https://datasheets.maximintegrated.com/en/ds/MAX77863.pdf. */
/* This does not contain Max77621 documentation, though. */
constexpr inline int Max77620RegisterGpio0 = 0x36;
constexpr inline int Max77620RegisterAmeGpio = 0x40;
constexpr inline int Max77620RegisterOnOffStat = 0x15;
constexpr inline int Max77620RegisterGpio0 = 0x36;
constexpr inline int Max77620RegisterAmeGpio = 0x40;
constexpr inline int Max77620RegisterOnOffCnfg1 = 0x41;
constexpr inline int Max77621RegisterVOut = 0x00;
constexpr inline int Max77621RegisterVOutDvc = 0x01;
@ -108,6 +112,10 @@ namespace ams::pmic {
}
}
u8 GetPmicOnOffStat() {
return i2c::QueryByte(i2c::Port_5, I2cAddressMax77620Pmic, Max77620RegisterOnOffStat);
}
}
void EnableVddCpu(Regulator regulator) {
@ -132,4 +140,19 @@ namespace ams::pmic {
}
}
void EnableSleep() {
/* Get the current onoff cfg. */
u8 cnfg = i2c::QueryByte(i2c::Port_5, I2cAddressMax77620Pmic, Max77620RegisterOnOffCnfg1);
/* Set SlpEn. */
cnfg |= (1 << 2);
/* Write the new cfg. */
i2c::SendByte(i2c::Port_5, I2cAddressMax77620Pmic, Max77620RegisterOnOffCnfg1, cnfg);
}
bool IsAcOk() {
return (GetPmicOnOffStat() & (1 << 1)) != 0;
}
}