| // 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. |
| |
| #pragma once |
| |
| #include <memory> |
| |
| #include <ddk/debug.h> |
| #include <ddk/protocol/i2c.h> |
| #include <ddktl/i2c-channel.h> |
| |
| namespace audio { |
| namespace mt8167 { |
| |
| class Tlv320adc { |
| public: |
| static std::unique_ptr<Tlv320adc> Create(const ddk::I2cChannel& i2c, uint32_t i2c_index); |
| |
| explicit Tlv320adc(const ddk::I2cChannel& i2c) |
| : i2c_(i2c) {} |
| |
| bool ValidGain(float gain); |
| zx_status_t SetGain(float gain); |
| zx_status_t Init(); |
| zx_status_t Reset(); |
| zx_status_t Standby(); |
| zx_status_t ExitStandby(); |
| float GetGain() const { return current_gain_; } |
| float GetMinGain() { return kMinGain; } |
| float GetMaxGain() { return kMaxGain; } |
| float GetGainStep() const { return kGainStep; } |
| |
| private: |
| static constexpr float kMaxGain = 20.0; |
| static constexpr float kMinGain = -12.0; |
| static constexpr float kGainStep = 0.5; |
| |
| zx_status_t WriteReg(uint8_t page, uint8_t reg, uint8_t value); |
| |
| ddk::I2cChannel i2c_; |
| |
| float current_gain_ = 0; |
| }; |
| } // namespace mt8167 |
| } // namespace audio |