mirror of
https://github.com/Atmosphere-NX/Atmosphere.git
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298 lines
10 KiB
C++
298 lines
10 KiB
C++
/*
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* Copyright (c) 2018-2020 Atmosphère-NX
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*
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* This program is free software; you can redistribute it and/or modify it
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* under the terms and conditions of the GNU General Public License,
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* version 2, as published by the Free Software Foundation.
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*
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* This program is distributed in the hope it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
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* more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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#include "boot_battery_driver.hpp"
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#include "boot_calibration.hpp"
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#include "boot_i2c_utils.hpp"
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namespace ams::boot {
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/* Include configuration into anonymous namespace. */
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namespace {
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#include "boot_battery_parameters.inc"
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const Max17050Parameters *GetBatteryParameters() {
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const u32 battery_version = GetBatteryVersion();
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const u32 battery_vendor = GetBatteryVendor();
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if (battery_version == 2) {
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if (battery_vendor == 'M') {
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return &Max17050Params2M;
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} else {
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return &Max17050Params2;
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}
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} else if (battery_version == 1) {
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return &Max17050Params1;
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} else {
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switch (battery_vendor) {
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case 'M':
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return &Max17050ParamsM;
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case 'R':
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return &Max17050ParamsR;
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case 'A':
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default:
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return &Max17050ParamsA;
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}
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}
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}
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}
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Result BatteryDriver::Read(u8 addr, u16 *out) {
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return ReadI2cRegister(this->i2c_session, reinterpret_cast<u8 *>(out), sizeof(*out), &addr, sizeof(addr));
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}
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Result BatteryDriver::Write(u8 addr, u16 val) {
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return WriteI2cRegister(this->i2c_session, reinterpret_cast<u8 *>(&val), sizeof(val), &addr, sizeof(addr));
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}
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Result BatteryDriver::ReadWrite(u8 addr, u16 mask, u16 val) {
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u16 cur_val;
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R_TRY(this->Read(addr, &cur_val));
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const u16 new_val = (cur_val & ~mask) | val;
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R_TRY(this->Write(addr, new_val));
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return ResultSuccess();
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}
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bool BatteryDriver::WriteValidate(u8 addr, u16 val) {
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/* Nintendo doesn't seem to check errors when doing this? */
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/* It's probably okay, since the value does get validated. */
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/* That said, we will validate the read to avoid uninit data problems. */
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this->Write(addr, val);
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svcSleepThread(3'000'000ul);
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u16 new_val;
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return R_SUCCEEDED(this->Read(addr, &new_val)) && new_val == val;
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}
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bool BatteryDriver::IsPowerOnReset() {
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/* N doesn't check result... */
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u16 val = 0;
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this->Read(Max17050Status, &val);
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return (val & 0x0002) == 0x0002;
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}
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Result BatteryDriver::LockVfSoc() {
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return this->Write(Max17050SocVfAccess, 0x0000);
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}
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Result BatteryDriver::UnlockVfSoc() {
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return this->Write(Max17050SocVfAccess, 0x0080);
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}
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Result BatteryDriver::LockModelTable() {
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R_TRY(this->Write(Max17050ModelAccess0, 0x0000));
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R_TRY(this->Write(Max17050ModelAccess1, 0x0000));
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return ResultSuccess();
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}
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Result BatteryDriver::UnlockModelTable() {
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R_TRY(this->Write(Max17050ModelAccess0, 0x0059));
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R_TRY(this->Write(Max17050ModelAccess1, 0x00C4));
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return ResultSuccess();
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}
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Result BatteryDriver::SetModelTable(const u16 *model_table) {
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for (size_t i = 0; i < Max17050ModelChrTblSize; i++) {
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R_TRY(this->Write(Max17050ModelChrTblStart + i, model_table[i]));
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}
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return ResultSuccess();
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}
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bool BatteryDriver::IsModelTableLocked() {
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bool locked = true;
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u16 cur_val = 0;
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for (size_t i = 0; i < Max17050ModelChrTblSize; i++) {
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this->Read(Max17050ModelChrTblStart + i, &cur_val);
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locked &= (cur_val == 0);
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}
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return locked;
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}
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bool BatteryDriver::IsModelTableSet(const u16 *model_table) {
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bool set = true;
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u16 cur_val = 0;
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for (size_t i = 0; i < Max17050ModelChrTblSize; i++) {
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this->Read(Max17050ModelChrTblStart + i, &cur_val);
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set &= (cur_val == model_table[i]);
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}
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return set;
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}
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Result BatteryDriver::InitializeBatteryParameters() {
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const Max17050Parameters *params = GetBatteryParameters();
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if (IsPowerOnReset()) {
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/* Do initial config. */
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R_TRY(this->ReadWrite(Max17050MiscCfg, 0x8000, 0x8000));
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svcSleepThread(500'000'000ul);
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R_TRY(this->Write(Max17050Config, 0x7210));
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R_TRY(this->Write(Max17050FilterCfg, 0x8784));
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R_TRY(this->Write(Max17050RelaxCfg, params->relaxcfg));
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R_TRY(this->Write(Max17050LearnCfg, 0x2603));
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R_TRY(this->Write(Max17050FullSocThr, params->fullsocthr));
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R_TRY(this->Write(Max17050IAvgEmpty, params->iavgempty));
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/* Unlock model table, write model table. */
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do {
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R_TRY(this->UnlockModelTable());
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R_TRY(this->SetModelTable(params->modeltbl));
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} while (!this->IsModelTableSet(params->modeltbl));
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/* Lock model table. */
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size_t lock_i = 0;
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while (true) {
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lock_i++;
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R_TRY(this->LockModelTable());
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if (this->IsModelTableLocked()) {
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break;
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}
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if (lock_i >= 8) {
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/* This is regarded as guaranteed success. */
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return ResultSuccess();
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}
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}
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/* Write custom parameters. */
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while (!this->WriteValidate(Max17050RComp0, params->rcomp0)) { /* ... */ }
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while (!this->WriteValidate(Max17050TempCo, params->tempco)) { /* ... */ }
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R_TRY(this->Write(Max17050IChgTerm, params->ichgterm));
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R_TRY(this->Write(Max17050TGain, params->tgain));
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R_TRY(this->Write(Max17050TOff, params->toff));
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while (!this->WriteValidate(Max17050VEmpty, params->vempty)) { /* ... */ }
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while (!this->WriteValidate(Max17050QResidual00, params->qresidual00)) { /* ... */ }
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while (!this->WriteValidate(Max17050QResidual10, params->qresidual10)) { /* ... */ }
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while (!this->WriteValidate(Max17050QResidual20, params->qresidual20)) { /* ... */ }
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while (!this->WriteValidate(Max17050QResidual30, params->qresidual30)) { /* ... */ }
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/* Write full capacity parameters. */
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while (!this->WriteValidate(Max17050FullCap, params->fullcap)) { /* ... */ }
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R_TRY(this->Write(Max17050DesignCap, params->vffullcap));
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while (!this->WriteValidate(Max17050FullCapNom, params->vffullcap)) { /* ... */ }
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svcSleepThread(350'000'000ul);
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/* Write VFSOC to VFSOC 0. */
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u16 vfsoc, qh;
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{
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R_TRY(this->Read(Max17050SocVf, &vfsoc));
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R_TRY(this->UnlockVfSoc());
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R_TRY(this->Write(Max17050SocVf0, vfsoc));
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R_TRY(this->Read(Max17050Qh, &qh));
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R_TRY(this->Write(Max17050Qh0, qh));
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R_TRY(this->LockVfSoc());
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}
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/* Write cycles. */
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while (!this->WriteValidate(Max17050Cycles, 0x0060)) { /* ... */ }
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/* Load new capacity parameters. */
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const u16 remcap = static_cast<u16>((vfsoc * params->vffullcap) / 0x6400);
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const u16 repcap = static_cast<u16>(remcap * (params->fullcap / params->vffullcap));
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const u16 dqacc = params->vffullcap / 0x10;
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while (!this->WriteValidate(Max17050RemCapMix, remcap)) { /* ... */ }
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while (!this->WriteValidate(Max17050RemCapRep, repcap)) { /* ... */ }
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while (!this->WriteValidate(Max17050DPAcc, 0x0C80)) { /* ... */ }
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while (!this->WriteValidate(Max17050DQAcc, dqacc)) { /* ... */ }
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while (!this->WriteValidate(Max17050FullCap, params->fullcap)) { /* ... */ }
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R_TRY(this->Write(Max17050DesignCap, params->vffullcap));
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while (!this->WriteValidate(Max17050FullCapNom, params->vffullcap)) { /* ... */ }
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R_TRY(this->Write(Max17050SocRep, vfsoc));
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/* Finish initialization. */
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{
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u16 status;
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R_TRY(this->Read(Max17050Status, &status));
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while (!this->WriteValidate(Max17050Status, status & 0xFFFD)) { /* ... */ }
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}
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R_TRY(this->Write(Max17050CGain, 0x7FFF));
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}
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return ResultSuccess();
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}
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Result BatteryDriver::IsBatteryRemoved(bool *out) {
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/* N doesn't check result, but we will. */
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u16 val = 0;
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R_TRY(this->Read(Max17050Status, &val));
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*out = (val & 0x0008) == 0x0008;
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return ResultSuccess();
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}
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Result BatteryDriver::GetTemperature(double *out) {
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u16 val = 0;
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R_TRY(this->Read(Max17050Temperature, &val));
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*out = static_cast<double>(val) * double(0.00390625);
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return ResultSuccess();
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}
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Result BatteryDriver::GetAverageVCell(u32 *out) {
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u16 val = 0;
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R_TRY(this->Read(Max17050AverageVCell, &val));
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*out = (625 * u32(val >> 3)) / 1000;
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return ResultSuccess();
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}
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Result BatteryDriver::GetSocRep(double *out) {
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u16 val = 0;
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R_TRY(this->Read(Max17050SocRep, &val));
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*out = static_cast<double>(val) * double(0.00390625);
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return ResultSuccess();
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}
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Result BatteryDriver::GetBatteryPercentage(size_t *out) {
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double raw_charge;
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R_TRY(this->GetSocRep(&raw_charge));
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int converted_percentage = (((raw_charge - 3.93359375) * 98.0) / 94.2304688) + 2.0;
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if (converted_percentage < 1) {
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*out = 1;
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} else if (converted_percentage > 100) {
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*out = 100;
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} else {
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*out = static_cast<size_t>(converted_percentage);
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}
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return ResultSuccess();
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}
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Result BatteryDriver::SetShutdownTimer() {
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return this->Write(Max17050ShdnTimer, 0xE000);
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}
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Result BatteryDriver::GetShutdownEnabled(bool *out) {
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u16 val = 0;
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R_TRY(this->Read(Max17050Config, &val));
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*out = (val & 0x0040) != 0;
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return ResultSuccess();
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}
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Result BatteryDriver::SetShutdownEnabled(bool enabled) {
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return this->ReadWrite(Max17050Config, 0x0040, enabled ? 0x0040 : 0x0000);
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}
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}
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