Atmosphere/stratosphere/boot/source/boot_pmic_driver.cpp
2021-10-10 00:14:06 -07:00

123 lines
4.5 KiB
C++

/*
* Copyright (c) Atmosphère-NX
*
* This program is free software; you can redistribute it and/or modify it
* under the terms and conditions of the GNU General Public License,
* version 2, as published by the Free Software Foundation.
*
* This program is distributed in the hope it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
* more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
#include <stratosphere.hpp>
#include "boot_i2c_utils.hpp"
#include "boot_pmic_driver.hpp"
namespace ams::boot {
void PmicDriver::ShutdownSystem() {
this->ShutdownSystem(false);
}
void PmicDriver::RebootSystem() {
this->ShutdownSystem(true);
}
Result PmicDriver::GetAcOk(bool *out) {
u8 power_status;
R_TRY(this->GetPowerStatus(std::addressof(power_status)));
*out = (power_status & 0x02) != 0;
return ResultSuccess();
}
Result PmicDriver::GetOnOffIrq(u8 *out) {
const u8 addr = 0x0B;
return ReadI2cRegister(m_i2c_session, out, sizeof(*out), std::addressof(addr), sizeof(addr));
}
Result PmicDriver::GetPowerStatus(u8 *out) {
const u8 addr = 0x15;
return ReadI2cRegister(m_i2c_session, out, sizeof(*out), std::addressof(addr), sizeof(addr));
}
Result PmicDriver::GetNvErc(u8 *out) {
const u8 addr = 0x0C;
return ReadI2cRegister(m_i2c_session, out, sizeof(*out), std::addressof(addr), sizeof(addr));
}
Result PmicDriver::GetPowerButtonPressed(bool *out) {
u8 on_off_irq;
R_TRY(this->GetOnOffIrq(std::addressof(on_off_irq)));
*out = (on_off_irq & 0x08) != 0;
return ResultSuccess();
}
void PmicDriver::ShutdownSystem(bool reboot) {
const u8 on_off_1_addr = 0x41;
const u8 on_off_2_addr = 0x42;
/* Get value, set or clear software reset mask. */
u8 on_off_2_val = 0;
R_ABORT_UNLESS(ReadI2cRegister(m_i2c_session, std::addressof(on_off_2_val), sizeof(on_off_2_val), std::addressof(on_off_2_addr), sizeof(on_off_2_addr)));
if (reboot) {
on_off_2_val |= 0x80;
} else {
on_off_2_val &= ~0x80;
}
R_ABORT_UNLESS(WriteI2cRegister(m_i2c_session, std::addressof(on_off_2_val), sizeof(on_off_2_val), std::addressof(on_off_2_addr), sizeof(on_off_2_addr)));
/* Get value, set software reset mask. */
u8 on_off_1_val = 0;
R_ABORT_UNLESS(ReadI2cRegister(m_i2c_session, std::addressof(on_off_1_val), sizeof(on_off_1_val), std::addressof(on_off_1_addr), sizeof(on_off_1_addr)));
on_off_1_val |= 0x80;
/* Finalize the battery on non-Calcio. */
if (spl::GetHardwareType() != spl::HardwareType::Calcio) {
BatteryDriver battery_driver;
this->FinalizeBattery(battery_driver);
}
/* Actually write the value to trigger shutdown/reset. */
R_ABORT_UNLESS(WriteI2cRegister(m_i2c_session, std::addressof(on_off_1_val), sizeof(on_off_1_val), std::addressof(on_off_1_addr), sizeof(on_off_1_addr)));
/* Allow up to 5 seconds for shutdown/reboot to take place. */
os::SleepThread(TimeSpan::FromSeconds(5));
AMS_ABORT("Shutdown failed");
}
void PmicDriver::FinalizeBattery(BatteryDriver &battery_driver) {
/* Get whether shutdown is enabled. */
bool shutdown_enabled;
if (R_FAILED(battery_driver.IsI2cShutdownEnabled(std::addressof(shutdown_enabled)))) {
return;
}
/* On Hoag, we don't want to use the desired shutdown value when battery charged. */
bool use_desired_shutdown = true;
if (spl::GetHardwareType() == spl::HardwareType::Hoag) {
float battery_charge_raw;
if (R_FAILED(battery_driver.GetSocRep(std::addressof(battery_charge_raw))) || battery_charge_raw >= 80.0) {
use_desired_shutdown = false;
}
}
bool ac_ok;
bool desired_shutdown_enabled;
if (R_FAILED(this->GetAcOk(&ac_ok)) || ac_ok) {
desired_shutdown_enabled = false;
} else {
desired_shutdown_enabled = true;
}
desired_shutdown_enabled &= use_desired_shutdown;
if (shutdown_enabled != desired_shutdown_enabled) {
battery_driver.SetI2cShutdownEnabled(desired_shutdown_enabled);
}
}
}