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Atmosphere/stratosphere/fatal/source/fatal_task_sound.cpp
2022-03-26 00:14:36 -07:00

96 lines
3.4 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 "fatal_task_sound.hpp"
namespace ams::fatal::srv {
namespace {
/* Task definition. */
class StopSoundTask : public ITaskWithDefaultStack {
private:
void StopSound();
public:
virtual Result Run() override;
virtual const char *GetName() const override {
return "SoundTask";
}
};
/* Task global. */
StopSoundTask g_stop_sound_task;
/* Task implementation. */
void StopSoundTask::StopSound() {
/* Talk to the ALC5639 over I2C, and disable audio output. */
{
I2cSession audio;
if (R_SUCCEEDED(i2cOpenSession(std::addressof(audio), I2cDevice_Alc5639))) {
ON_SCOPE_EXIT { i2csessionClose(std::addressof(audio)); };
struct {
u8 reg;
u16 val;
} __attribute__((packed)) cmd;
static_assert(sizeof(cmd) == 3, "I2C command definition!");
cmd.reg = 0x01;
cmd.val = 0xC8C8;
i2csessionSendAuto(std::addressof(audio), std::addressof(cmd), sizeof(cmd), I2cTransactionOption_All);
cmd.reg = 0x02;
cmd.val = 0xC8C8;
i2csessionSendAuto(std::addressof(audio), std::addressof(cmd), sizeof(cmd), I2cTransactionOption_All);
for (u8 reg = 97; reg <= 102; reg++) {
cmd.reg = reg;
cmd.val = 0;
i2csessionSendAuto(std::addressof(audio), std::addressof(cmd), sizeof(cmd), I2cTransactionOption_All);
}
}
}
/* Talk to the ALC5639 over GPIO, and disable audio output */
{
gpio::GpioPadSession audio;
if (R_SUCCEEDED(gpio::OpenSession(std::addressof(audio), gpio::DeviceCode_CodecLdoEnTemp))) {
ON_SCOPE_EXIT { gpio::CloseSession(std::addressof(audio)); };
/* Set direction output, sleep 200 ms so it can take effect. */
gpio::SetDirection(std::addressof(audio), gpio::Direction_Output);
os::SleepThread(TimeSpan::FromMilliSeconds(200));
/* Pull audio codec low. */
gpio::SetValue(std::addressof(audio), gpio::GpioValue_Low);
}
}
}
Result StopSoundTask::Run() {
StopSound();
R_SUCCEED();
}
}
ITask *GetStopSoundTask(const ThrowContext *ctx) {
g_stop_sound_task.Initialize(ctx);
return std::addressof(g_stop_sound_task);
}
}