1
0
Fork 0
mirror of https://github.com/Atmosphere-NX/Atmosphere.git synced 2024-12-25 19:56:03 +00:00
Atmosphere/exosphere/mariko_fatal/source/fatal_sound.cpp

62 lines
2 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 <exosphere.hpp>
#include "fatal_sound.hpp"
namespace ams::secmon::fatal {
namespace {
constexpr inline int I2cAddressMaxAlc5639 = 0x1C;
constexpr inline uintptr_t GPIO = secmon::MemoryRegionVirtualDeviceGpio.GetAddress();
constexpr size_t GPIO_PORT7_CNF_1 = 0x604;
constexpr size_t GPIO_PORT7_OE_1 = 0x614;
constexpr size_t GPIO_PORT7_OUT_1 = 0x624;
void WriteAlc5639Register(int r, u16 val) {
i2c::Send(i2c::Port_1, I2cAddressMaxAlc5639, r, std::addressof(val), sizeof(val));
}
}
void StopSound() {
/* Mute output to the speaker, setting left/right volume to 0 DB. */
WriteAlc5639Register(0x01, 0xC8C8);
/* Mute output to headphones, setting left/right volume to 0 DB. */
WriteAlc5639Register(0x02, 0xC8C8);
/* Clear all Power Management Control registers by writing 0x0000 to them. */
for (int r = 0x61; r <= 0x66; ++r) {
WriteAlc5639Register(r, 0x0000);
}
/* Configure CodecLdoEn as GPIO. */
reg::SetBits(GPIO + GPIO_PORT7_CNF_1, (1u << 4));
/* Configure CodecLdoEn as Output. */
reg::SetBits(GPIO + GPIO_PORT7_OE_1, (1u << 4));
/* Wait 200 milliseconds for config to take effect. */
util::WaitMicroSeconds(200'000ul);
/* Pull CodecLdoEn low. */
reg::ClearBits(GPIO + GPIO_PORT7_OUT_1, (1u << 4));
}
}