mirror of
https://github.com/Atmosphere-NX/Atmosphere
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92 lines
3.1 KiB
C++
92 lines
3.1 KiB
C++
/*
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* Copyright (c) 2018-2020 Atmosphère-NX
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*
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* This program is free software; you can redistribute it and/or modify it
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* under the terms and conditions of the GNU General Public License,
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* version 2, as published by the Free Software Foundation.
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*
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* This program is distributed in the hope it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
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* more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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#include <stratosphere.hpp>
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#include "impl/i2c_driver_core.hpp"
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namespace ams::i2c::driver {
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namespace {
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constexpr inline int DefaultRetryCount = 3;
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constexpr inline TimeSpan DefaultRetryInterval = TimeSpan::FromMilliSeconds(5);
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Result OpenSessionImpl(I2cSession *out, I2cDeviceProperty *device) {
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/* Construct the session. */
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auto *session = new (std::addressof(impl::GetI2cSessionImpl(*out))) impl::I2cSessionImpl(DefaultRetryCount, DefaultRetryInterval);
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auto session_guard = SCOPE_GUARD { session->~I2cSessionImpl(); };
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/* Open the session. */
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R_TRY(session->Open(device, ddsf::AccessMode_ReadWrite));
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/* We succeeded. */
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session_guard.Cancel();
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return ResultSuccess();
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}
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}
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Result OpenSession(I2cSession *out, DeviceCode device_code) {
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AMS_ASSERT(out != nullptr);
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/* Find the device. */
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I2cDeviceProperty *device = nullptr;
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R_TRY(impl::FindDevice(std::addressof(device), device_code));
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AMS_ASSERT(device != nullptr);
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/* Open the session. */
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R_TRY(OpenSessionImpl(out, device));
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return ResultSuccess();
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}
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void CloseSession(I2cSession &session) {
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impl::GetOpenI2cSessionImpl(session).~I2cSessionImpl();
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}
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Result Send(I2cSession &session, const void *src, size_t src_size, TransactionOption option) {
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AMS_ASSERT(src != nullptr);
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AMS_ABORT_UNLESS(src_size > 0);
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return impl::GetOpenI2cSessionImpl(session).Send(src, src_size, option);
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}
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Result Receive(void *dst, size_t dst_size, I2cSession &session, TransactionOption option) {
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AMS_ASSERT(dst != nullptr);
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AMS_ABORT_UNLESS(dst_size > 0);
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return impl::GetOpenI2cSessionImpl(session).Receive(dst, dst_size, option);
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}
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Result ExecuteCommandList(void *dst, size_t dst_size, I2cSession &session, const void *src, size_t src_size) {
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AMS_ASSERT(src != nullptr);
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AMS_ASSERT(dst != nullptr);
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AMS_ABORT_UNLESS(src_size > 0);
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AMS_ABORT_UNLESS(dst_size > 0);
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return impl::GetOpenI2cSessionImpl(session).ExecuteCommandList(dst, dst_size, src, src_size);
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}
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Result SetRetryPolicy(I2cSession &session, int max_retry_count, int retry_interval_us) {
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AMS_ASSERT(max_retry_count > 0);
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AMS_ASSERT(retry_interval_us > 0);
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return impl::GetOpenI2cSessionImpl(session).SetRetryPolicy(max_retry_count, retry_interval_us);
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}
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}
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