blob: fb9915e6754aef2ac97b85df784bf76dc830cbc9 [file] [log] [blame]
// Copyright 2019 The Chromium OS 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 <iio.h>
#include <string>
#include <vector>
#include <base/optional.h>
#include "libmems/export.h"
#include "libmems/iio_device.h"
namespace libmems {
class IioChannel;
class IioContext;
class IioContextImpl;
class LIBMEMS_EXPORT IioDeviceTriggerImpl : public IioDevice {
// Return -1 for iio_sysfs_trigger
static base::Optional<int> GetIdFromString(const char* id_str);
// Return iio_sysfs_trigger for -1
static std::string GetStringFromId(int id);
// iio_device objects are kept alive by the IioContextImpl.
IioDeviceTriggerImpl(IioContextImpl* ctx, iio_device* dev);
IioDeviceTriggerImpl(const IioDeviceTriggerImpl&) = delete;
IioDeviceTriggerImpl& operator=(const IioDeviceTriggerImpl&) = delete;
~IioDeviceTriggerImpl() override = default;
IioContext* GetContext() const override;
const char* GetName() const override;
// Return -1 for iio_sysfs_trigger
int GetId() const override;
base::FilePath GetPath() const override;
base::Optional<std::string> ReadStringAttribute(
const std::string& name) const override;
base::Optional<int64_t> ReadNumberAttribute(
const std::string& name) const override;
base::Optional<double> ReadDoubleAttribute(
const std::string& name) const override;
bool WriteStringAttribute(const std::string& name,
const std::string& value) override {
return false;
bool WriteNumberAttribute(const std::string& name, int64_t value) override;
bool WriteDoubleAttribute(const std::string& name, double value) override;
bool HasFifo() const override { return false; }
iio_device* GetUnderlyingIioDevice() const override { return nullptr; }
bool SetTrigger(IioDevice* trigger_device) override { return false; }
IioDevice* GetTrigger() override { return nullptr; }
IioDevice* GetHrtimer() override { return nullptr; }
base::Optional<size_t> GetSampleSize() const override {
return base::nullopt;
bool EnableBuffer(size_t num) override { return false; }
bool DisableBuffer() override { return false; }
bool IsBufferEnabled(size_t* num = nullptr) const override { return false; }
bool CreateBuffer() override { return false; }
base::Optional<int32_t> GetBufferFd() override { return base::nullopt; }
base::Optional<IioSample> ReadSample() override { return base::nullopt; }
void FreeBuffer() override {}
IioContextImpl* context_; // non-owned
iio_device* const trigger_; // non-owned
std::string log_prefix_;
} // namespace libmems