1// Copyright 2018 The Fuchsia Authors. All rights reserved. 2// Use of this source code is governed by a BSD-style license that can be 3// found in the LICENSE file. 4 5#pragma once 6 7#include <ddk/debug.h> 8#include <ddktl/pdev.h> 9#include <fbl/unique_ptr.h> 10 11 12 13namespace audio { 14namespace astro { 15 16static constexpr uint8_t SW_RESET = 0x01; //sw reset 17static constexpr uint8_t PWR_CTL = 0x02; //power control 18static constexpr uint8_t PB_CFG2 = 0x05; //pcm gain register 19static constexpr uint8_t TDM_CFG0 = 0x0a; 20static constexpr uint8_t TDM_CFG1 = 0x0b; 21static constexpr uint8_t TDM_CFG2 = 0x0c; 22static constexpr uint8_t TDM_CFG3 = 0x0d; 23static constexpr uint8_t TDM_CFG4 = 0x0e; 24static constexpr uint8_t TDM_CFG5 = 0x0f; 25static constexpr uint8_t TDM_CFG6 = 0x10; 26static constexpr uint8_t TDM_CFG7 = 0x11; 27static constexpr uint8_t TDM_CFG8 = 0x12; 28static constexpr uint8_t TDM_CFG9 = 0x13; 29static constexpr uint8_t TDM_CFG10 = 0x14; 30static constexpr uint8_t CLOCK_CFG = 0x3c; //Clock Config 31 32class Tas27xx : public fbl::unique_ptr<Tas27xx> { 33public: 34 static fbl::unique_ptr<Tas27xx> Create(ddk::I2cChannel&& i2c); 35 bool ValidGain(float gain); 36 zx_status_t SetGain(float gain); 37 float GetGain() const { return current_gain_; } 38 float GetMinGain() const { return kMinGain; } 39 float GetMaxGain() const { return kMaxGain; } 40 float GetGainStep() const { return kGainStep; } 41 42 zx_status_t Init(); 43 zx_status_t Reset(); 44 zx_status_t Standby(); 45 zx_status_t ExitStandby(); 46 47private: 48 friend class fbl::unique_ptr<Tas27xx>; 49 static constexpr float kMaxGain = 0; 50 static constexpr float kMinGain = -100.0; 51 static constexpr float kGainStep = 0.5; 52 53 Tas27xx() = default; 54 ~Tas27xx() = default; 55 56 zx_status_t WriteReg(uint8_t reg, uint8_t value); 57 uint8_t ReadReg(uint8_t reg); 58 59 zx_status_t SetStandby(bool stdby); 60 61 ddk::I2cChannel i2c_; 62 63 float current_gain_ = 0; 64}; 65} // namespace astro 66} // namespace audio