mirror of
https://github.com/Atmosphere-NX/Atmosphere.git
synced 2024-12-27 04:36:04 +00:00
78 lines
2.5 KiB
C++
78 lines
2.5 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/>.
|
|
*/
|
|
|
|
#pragma once
|
|
#include <switch.h>
|
|
#include <stratosphere.hpp>
|
|
|
|
#include "i2c_types.hpp"
|
|
#include "i2c_bus_accessor.hpp"
|
|
#include "i2c_driver_session.hpp"
|
|
|
|
class I2cResourceManager {
|
|
public:
|
|
static constexpr size_t MaxDriverSessions = 40;
|
|
static constexpr size_t MaxBuses = 6;
|
|
static constexpr size_t PowerBusId = static_cast<size_t>(I2cBus_I2c5);
|
|
static constexpr size_t InvalidSessionId = static_cast<size_t>(-1);
|
|
private:
|
|
HosMutex initialize_mutex;
|
|
HosMutex session_open_mutex;
|
|
size_t ref_cnt = 0;
|
|
bool suspended = false;
|
|
bool power_bus_suspended = false;
|
|
I2cDriverSession sessions[MaxDriverSessions];
|
|
I2cBusAccessor bus_accessors[MaxBuses];
|
|
HosMutex transaction_mutexes[MaxBuses];
|
|
public:
|
|
I2cResourceManager() {
|
|
/* ... */
|
|
}
|
|
private:
|
|
size_t GetFreeSessionId() const;
|
|
public:
|
|
/* N uses a singleton here, we'll oblige. */
|
|
static I2cResourceManager &GetInstance() {
|
|
static I2cResourceManager s_instance;
|
|
return s_instance;
|
|
}
|
|
|
|
bool IsInitialized() const {
|
|
return this->ref_cnt > 0;
|
|
}
|
|
|
|
I2cDriverSession& GetSession(size_t id) {
|
|
return this->sessions[id];
|
|
}
|
|
|
|
HosMutex& GetTransactionMutex(I2cBus bus) {
|
|
if (bus >= MaxBuses) {
|
|
std::abort();
|
|
}
|
|
return this->transaction_mutexes[bus];
|
|
}
|
|
|
|
void Initialize();
|
|
void Finalize();
|
|
|
|
void OpenSession(I2cSessionImpl *out_session, I2cBus bus, u32 slave_address, AddressingMode addressing_mode, SpeedMode speed_mode, u32 max_retries, u64 retry_wait_time);
|
|
void CloseSession(const I2cSessionImpl &session);
|
|
void SuspendBuses();
|
|
void ResumeBuses();
|
|
void SuspendPowerBus();
|
|
void ResumePowerBus();
|
|
};
|
|
|