Atmosphere/stratosphere/boot/source/i2c/i2c_command_list.hpp

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/*
* 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/>.
*/
#pragma once
#include "i2c_types.hpp"
namespace ams::i2c {
enum class Command {
Send = 0,
Receive = 1,
SubCommand = 2,
Count,
};
enum class SubCommand {
Sleep = 0,
Count,
};
class CommandListFormatter {
public:
static constexpr size_t MaxCommandListSize = 0x100;
private:
u8 *cmd_list = nullptr;
size_t cmd_list_size = 0;
size_t cur_index = 0;
public:
CommandListFormatter(void *cmd_list, size_t cmd_list_size) : cmd_list(static_cast<u8 *>(cmd_list)), cmd_list_size(cmd_list_size) {
AMS_ASSERT(cmd_list_size <= MaxCommandListSize);
}
~CommandListFormatter() {
this->cmd_list = nullptr;
}
private:
Result CanEnqueue(size_t size) const;
public:
size_t GetCurrentSize() const {
return this->cur_index;
}
Result EnqueueSendCommand(I2cTransactionOption option, const void *src, size_t size);
Result EnqueueReceiveCommand(I2cTransactionOption option, size_t size);
Result EnqueueSleepCommand(size_t us);
};
}