Atmosphere/stratosphere/fatal/source/fatal_task_clock.cpp
2019-06-17 16:41:03 -07:00

55 lines
1.8 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 <switch.h>
#include "fatal_task_clock.hpp"
Result AdjustClockTask::AdjustClockForModule(PcvModule module, u32 hz) {
if (GetRuntimeFirmwareVersion() >= FirmwareVersion_800) {
/* On 8.0.0+, convert to module id + use clkrst API. */
PcvModuleId module_id;
R_TRY(pcvGetModuleId(&module_id, module));
ClkrstSession session;
R_TRY(clkrstOpenSession(&session, module_id, 3));
ON_SCOPE_EXIT { clkrstCloseSession(&session); };
R_TRY(clkrstSetClockRate(&session, hz));
} else {
/* On 1.0.0-7.0.1, use pcv API. */
R_TRY(pcvSetClockRate(module, hz));
}
return ResultSuccess;
}
Result AdjustClockTask::AdjustClock() {
/* Fatal sets the CPU to 1020MHz, the GPU to 307 MHz, and the EMC to 1331MHz. */
constexpr u32 CPU_CLOCK_1020MHZ = 0x3CCBF700L;
constexpr u32 GPU_CLOCK_307MHZ = 0x124F8000L;
constexpr u32 EMC_CLOCK_1331MHZ = 0x4F588000L;
R_TRY(AdjustClockForModule(PcvModule_CpuBus, CPU_CLOCK_1020MHZ));
R_TRY(AdjustClockForModule(PcvModule_GPU, GPU_CLOCK_307MHZ));
R_TRY(AdjustClockForModule(PcvModule_EMC, EMC_CLOCK_1331MHZ));
return ResultSuccess;
}
Result AdjustClockTask::Run() {
return AdjustClock();
}