mirror of
https://github.com/Atmosphere-NX/Atmosphere.git
synced 2024-12-23 18:56:03 +00:00
62 lines
2 KiB
C++
62 lines
2 KiB
C++
/*
|
|
* Copyright (c) 2018-2020 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));
|
|
}
|
|
|
|
}
|