blob: b13cf34b37476d932aa37a2b3b9028f8b7b7c4a1 (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
|
/*
* Copyright 2023 jacqueline <me@jacqueline.id.au>
*
* SPDX-License-Identifier: GPL-3.0-only
*/
#pragma once
#include <stdint.h>
#include <cstdint>
#include <optional>
namespace drivers {
namespace wm8523 {
extern const uint16_t kAbsoluteMaxVolume;
extern const uint16_t kAbsoluteMinVolume;
extern const uint16_t kMaxVolumeBeforeClipping;
extern const uint16_t kLineLevelReferenceVolume;
extern const uint16_t kDefaultVolume;
extern const uint16_t kDefaultMaxVolume;
constexpr auto VolumeToDb(uint16_t vol) -> int_fast8_t {
return (vol - kLineLevelReferenceVolume) / 4;
}
constexpr auto DbToVolume(int_fast8_t db) -> uint16_t {
return (db * 4) + kLineLevelReferenceVolume;
}
enum class Register : uint8_t {
kReset = 0,
kRevision = 1,
kPsCtrl = 2,
kAifCtrl1 = 3,
kAifCtrl2 = 4,
kDacCtrl = 5,
kDacGainLeft = 6,
kDacGainRight = 7,
kZeroDetect = 8,
};
auto ReadRegister(Register reg) -> std::optional<uint16_t>;
auto WriteRegister(Register reg, uint16_t data) -> bool;
auto WriteRegister(Register reg, uint8_t msb, uint8_t lsb) -> bool;
} // namespace wm8523
} // namespace drivers
|
