| // Copyright 2018 The Fuchsia Authors. All rights reserved. |
| // Use of this source code is governed by a BSD-style license that can be |
| // found in the LICENSE file. |
| |
| #pragma once |
| |
| #include <fbl/type_support.h> |
| |
| namespace ddk { |
| namespace internal { |
| |
| DECLARE_HAS_MEMBER_FN_WITH_SIGNATURE(has_get_bus_count, I2cImplGetBusCount, |
| uint32_t (C::*)()); |
| DECLARE_HAS_MEMBER_FN_WITH_SIGNATURE(has_i2c_impl_get_max_transfer_size, I2cImplGetMaxTransferSize, |
| zx_status_t (C::*)(uint32_t, size_t*)); |
| DECLARE_HAS_MEMBER_FN_WITH_SIGNATURE(has_i2c_impl_set_bitrate, I2cImplSetBitRate, |
| zx_status_t (C::*)(uint32_t, uint32_t)); |
| DECLARE_HAS_MEMBER_FN_WITH_SIGNATURE(has_i2c_impl_transact, I2cImplTransact, |
| zx_status_t (C::*)(uint32_t, size_t*)); |
| |
| template <typename D> |
| constexpr void CheckI2cImplProtocolSubclass() { |
| static_assert(internal::has_i2c_impl_transact<D>::value, |
| "I2cImplProtocol subclasses must implement " |
| "I2cImplGetBusCount()"); |
| static_assert(internal::has_i2c_impl_get_max_transfer_size<D>::value, |
| "I2cImplProtocol subclasses must implement " |
| "I2cImplGetMaxTransferSize(uint32_t bus_id, size_t* out_size)"); |
| static_assert(internal::has_i2c_impl_set_bitrate<D>::value, |
| "I2cImplProtocol subclasses must implement " |
| "I2cImplSetBitRate(uint32_t bus_id, uint32_t bitrate)"); |
| static_assert(internal::has_i2c_impl_transact<D>::value, |
| "I2cImplProtocol subclasses must implement " |
| "I2cImplTransact(uint32_t bus_id, uint16_t address, const void* write_buf, " |
| "size_t write_length, void* read_buf, size_t read_length)"); |
| } |
| |
| } // namespace internal |
| } // namespace ddk |
