| // Copyright 2019 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. |
| |
| #include <lib/mmio/mmio.h> |
| |
| #include <ddktl/device.h> |
| #include <ddktl/protocol/gpio.h> |
| #include <ddktl/protocol/spiimpl.h> |
| #include <fbl/vector.h> |
| #include <soc/aml-common/aml-spi.h> |
| |
| namespace spi { |
| |
| class AmlSpi; |
| using DeviceType = ddk::Device<AmlSpi, ddk::Unbindable>; |
| |
| class AmlSpi : public DeviceType, public ddk::SpiImplProtocol<AmlSpi, ddk::base_protocol> { |
| public: |
| // Spawns device node. |
| static zx_status_t Create(void* ctx, zx_device_t* device); |
| |
| // Device protocol implementation. |
| void DdkUnbind(ddk::UnbindTxn txn); |
| void DdkRelease(); |
| |
| uint32_t SpiImplGetChipSelectCount() { return static_cast<uint32_t>(gpio_.size()); } |
| zx_status_t SpiImplExchange(uint32_t cs, const uint8_t* txdata, size_t txdata_size, |
| uint8_t* out_rxdata, size_t rxdata_size, size_t* out_rxdata_actual); |
| |
| private: |
| explicit AmlSpi(zx_device_t* device, ddk::MmioBuffer mmio) |
| : DeviceType(device), mmio_(std::move(mmio)) {} |
| |
| zx_status_t GpioInit(amlspi_cs_map_t* map, ddk::CompositeProtocolClient& composite); |
| void DumpState(); |
| |
| fbl::Vector<ddk::GpioProtocolClient> gpio_; |
| ddk::MmioBuffer mmio_; |
| }; |
| |
| } // namespace spi |