mirror of
https://github.com/Atmosphere-NX/Atmosphere.git
synced 2024-11-23 12:22:08 +00:00
75 lines
2.9 KiB
C++
75 lines
2.9 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/>.
|
|
*/
|
|
|
|
#include "boot_i2c_utils.hpp"
|
|
|
|
namespace sts::boot {
|
|
|
|
namespace {
|
|
|
|
template<typename F>
|
|
constexpr Result RetryUntilSuccess(F f) {
|
|
constexpr u64 timeout = 10'000'000'000ul;
|
|
constexpr u64 retry_interval = 20'000'000ul;
|
|
|
|
u64 cur_time = 0;
|
|
while (true) {
|
|
R_TRY_CLEANUP(f(), {
|
|
cur_time += retry_interval;
|
|
if (cur_time < timeout) {
|
|
svcSleepThread(retry_interval);
|
|
continue;
|
|
}
|
|
});
|
|
return ResultSuccess;
|
|
}
|
|
}
|
|
|
|
}
|
|
|
|
Result ReadI2cRegister(i2c::driver::Session &session, u8 *dst, size_t dst_size, const u8 *cmd, size_t cmd_size) {
|
|
if (dst == nullptr || dst_size == 0 || cmd == nullptr || cmd_size == 0) {
|
|
std::abort();
|
|
}
|
|
|
|
u8 cmd_list[i2c::CommandListFormatter::MaxCommandListSize];
|
|
|
|
i2c::CommandListFormatter formatter(cmd_list, sizeof(cmd_list));
|
|
R_ASSERT(formatter.EnqueueSendCommand(I2cTransactionOption_Start, cmd, cmd_size));
|
|
R_ASSERT(formatter.EnqueueReceiveCommand(static_cast<I2cTransactionOption>(I2cTransactionOption_Start | I2cTransactionOption_Stop), dst_size));
|
|
|
|
return RetryUntilSuccess([&]() { return i2c::driver::ExecuteCommandList(session, dst, dst_size, cmd_list, formatter.GetCurrentSize()); });
|
|
}
|
|
|
|
Result WriteI2cRegister(i2c::driver::Session &session, const u8 *src, size_t src_size, const u8 *cmd, size_t cmd_size) {
|
|
if (src == nullptr || src_size == 0 || cmd == nullptr || cmd_size == 0) {
|
|
std::abort();
|
|
}
|
|
|
|
u8 cmd_list[0x20];
|
|
|
|
/* N doesn't use a CommandListFormatter here... */
|
|
std::memcpy(&cmd_list[0], cmd, cmd_size);
|
|
std::memcpy(&cmd_list[cmd_size], src, src_size);
|
|
|
|
return RetryUntilSuccess([&]() { return i2c::driver::Send(session, cmd_list, src_size + cmd_size, static_cast<I2cTransactionOption>(I2cTransactionOption_Start | I2cTransactionOption_Stop)); });
|
|
}
|
|
|
|
Result WriteI2cRegister(i2c::driver::Session &session, const u8 address, const u8 value) {
|
|
return WriteI2cRegister(session, &value, sizeof(value), &address, sizeof(address));
|
|
}
|
|
|
|
}
|