Atmosphere/stratosphere/boot/source/boot_pmic_driver.cpp

115 lines
3.8 KiB
C++

/*
* Copyright (c) 2018-2019 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 "boot_i2c_utils.hpp"
#include "boot_pmic_driver.hpp"
namespace ams::boot {
void PmicDriver::ShutdownSystem() {
R_ASSERT(this->ShutdownSystem(false));
}
void PmicDriver::RebootSystem() {
R_ASSERT(this->ShutdownSystem(true));
}
Result PmicDriver::GetAcOk(bool *out) {
u8 power_status;
R_TRY(this->GetPowerStatus(&power_status));
*out = (power_status & 0x02) != 0;
return ResultSuccess();
}
Result PmicDriver::GetPowerIntr(u8 *out) {
const u8 addr = 0x0B;
return ReadI2cRegister(this->i2c_session, out, sizeof(*out), &addr, sizeof(addr));
}
Result PmicDriver::GetPowerStatus(u8 *out) {
const u8 addr = 0x15;
return ReadI2cRegister(this->i2c_session, out, sizeof(*out), &addr, sizeof(addr));
}
Result PmicDriver::GetNvErc(u8 *out) {
const u8 addr = 0x0C;
return ReadI2cRegister(this->i2c_session, out, sizeof(*out), &addr, sizeof(addr));
}
Result PmicDriver::GetPowerButtonPressed(bool *out) {
u8 power_intr;
R_TRY(this->GetPowerIntr(&power_intr));
*out = (power_intr & 0x08) != 0;
return ResultSuccess();
}
Result 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_ASSERT(ReadI2cRegister(this->i2c_session, &on_off_2_val, sizeof(on_off_2_val), &on_off_2_addr, sizeof(on_off_2_addr)));
if (reboot) {
on_off_2_val |= 0x80;
} else {
on_off_2_val &= ~0x80;
}
R_ASSERT(WriteI2cRegister(this->i2c_session, &on_off_2_val, sizeof(on_off_2_val), &on_off_2_addr, sizeof(on_off_2_addr)));
/* Get value, set software reset mask. */
u8 on_off_1_val = 0;
R_ASSERT(ReadI2cRegister(this->i2c_session, &on_off_1_val, sizeof(on_off_1_val), &on_off_1_addr, sizeof(on_off_1_addr)));
on_off_1_val |= 0x80;
/* Finalize the battery. */
{
BatteryDriver battery_driver;
this->FinalizeBattery(&battery_driver);
}
/* Actually write the value to trigger shutdown/reset. */
R_ASSERT(WriteI2cRegister(this->i2c_session, &on_off_1_val, sizeof(on_off_1_val), &on_off_1_addr, sizeof(on_off_1_addr)));
/* Allow up to 5 seconds for shutdown/reboot to take place. */
svcSleepThread(5'000'000'000ul);
AMS_ASSERT(false);
}
void PmicDriver::FinalizeBattery(BatteryDriver *battery_driver) {
/* Set shutdown timer. */
battery_driver->SetShutdownTimer();
/* Get whether shutdown is enabled. */
bool shutdown_enabled;
if (R_FAILED(battery_driver->GetShutdownEnabled(&shutdown_enabled))) {
return;
}
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;
}
if (shutdown_enabled != desired_shutdown_enabled) {
battery_driver->SetShutdownEnabled(desired_shutdown_enabled);
}
}
}