src/devices/thermal/drivers/aml-thermistor/thermistor-channel.h

// Copyright 2020 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.

#ifndef SRC_DEVICES_THERMAL_DRIVERS_AML_THERMISTOR_THERMISTOR_CHANNEL_H_
#define SRC_DEVICES_THERMAL_DRIVERS_AML_THERMISTOR_THERMISTOR_CHANNEL_H_

#include <fidl/fuchsia.hardware.adc/cpp/wire.h>
#include <fidl/fuchsia.hardware.temperature/cpp/wire.h>
#include <lib/ddk/device.h>
#include <lib/mmio/mmio.h>
#include <lib/thermal/ntc.h>
#include <lib/zx/interrupt.h>

#include <ddktl/device.h>
#include <ddktl/protocol/empty-protocol.h>
#include <fbl/mutex.h>
#include <fbl/ref_ptr.h>
#include <soc/aml-common/aml-g12-saradc.h>

namespace thermal {

class ThermistorDeviceTest;

namespace FidlTemperature = fuchsia_hardware_temperature;
class ThermistorChannel;
using DeviceType2 =
    ddk::Device<ThermistorChannel, ddk::Messageable<FidlTemperature::Device>::Mixin>;

class ThermistorChannel : public DeviceType2, public ddk::EmptyProtocol<ZX_PROTOCOL_TEMPERATURE> {
 public:
  ThermistorChannel(zx_device_t* device, fbl::RefPtr<AmlSaradcDevice> adc, uint32_t ch,
                    NtcInfo ntc_info, uint32_t pullup_ohms)
      : DeviceType2(device), adc_(adc), adc_channel_(ch), ntc_(ntc_info, pullup_ohms) {}

  void GetTemperatureCelsius(GetTemperatureCelsiusRequestView request,
                             GetTemperatureCelsiusCompleter::Sync& completer) override;
  void DdkRelease() { delete this; }

 private:
  friend ThermistorDeviceTest;

  const fbl::RefPtr<AmlSaradcDevice> adc_;
  const uint32_t adc_channel_;
  const Ntc ntc_;
};

namespace FidlAdc = fuchsia_hardware_adc;
class RawChannel;
using DeviceType3 = ddk::Device<RawChannel, ddk::Messageable<FidlAdc::Device>::Mixin>;

class RawChannel : public DeviceType3, public ddk::EmptyProtocol<ZX_PROTOCOL_ADC> {
 public:
  RawChannel(zx_device_t* device, fbl::RefPtr<AmlSaradcDevice> adc, uint32_t ch)
      : DeviceType3(device), adc_(adc), adc_channel_(ch) {}

  void GetSample(GetSampleRequestView request, GetSampleCompleter::Sync& completer) override;
  void GetNormalizedSample(GetNormalizedSampleRequestView request,
                           GetNormalizedSampleCompleter::Sync& completer) override;
  void GetResolution(GetResolutionRequestView request,
                     GetResolutionCompleter::Sync& completer) override;
  void DdkRelease() { delete this; }

 private:
  const fbl::RefPtr<AmlSaradcDevice> adc_;
  const uint32_t adc_channel_;
};

}  // namespace thermal

#endif  // SRC_DEVICES_THERMAL_DRIVERS_AML_THERMISTOR_THERMISTOR_CHANNEL_H_