zircon/system/ulib/intel-hda/include/intel-hda/utils/codec-state.h

// Copyright 2017 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 INTEL_HDA_UTILS_CODEC_STATE_H_
#define INTEL_HDA_UTILS_CODEC_STATE_H_

namespace audio {
namespace intel_hda {

#include <stdint.h>

// Section 7.3.3.12.  Present only in pin complexes
struct PinWidgetCtrlState {
  PinWidgetCtrlState() {}
  explicit PinWidgetCtrlState(uint8_t raw_data) : raw_data_(raw_data) {}

  bool hp_amp_enb() const { return (raw_data_ & (1u << 7)) != 0; }
  bool output_enb() const { return (raw_data_ & (1u << 6)) != 0; }
  bool input_enb() const { return (raw_data_ & (1u << 5)) != 0; }
  VRefEn vref_enb() const { return static_cast<VRefEn>(raw_data_ & 0xf); }
  EPT ept() const { return static_cast<EPT>(raw_data_ & 0x3); }

  uint8_t raw_data_;
};

// Section 7.3.3.15 and Table 92
struct PinSenseState {
  PinSenseState() {}
  explicit PinSenseState(uint32_t raw_data) : raw_data_(raw_data) {}

  bool presence_detect() const { return (raw_data_ & 0x80000000u) != 0; }
  bool eld_valid() const { return (raw_data_ & 0x40000000u) != 0; }
  uint32_t impedance() const { return (raw_data_ & 0x7fffffffu); }

  uint32_t raw_data_ = 0;
};

// Section 7.3.3.16
struct EAPDState {
  EAPDState() {}
  explicit EAPDState(uint32_t raw_data) : raw_data_(raw_data) {}

  bool btl() const { return (raw_data_ & 0x1u) != 0; }
  bool eapd() const { return (raw_data_ & 0x2u) != 0; }
  bool lr_swap() const { return (raw_data_ & 0x4u) != 0; }

  uint32_t raw_data_;
};

}  // namespace intel_hda
}  // namespace audio

#endif  // INTEL_HDA_UTILS_CODEC_STATE_H_