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09184118 JS |
1 | /* |
2 | * hdmi-codec.h - HDMI Codec driver API | |
3 | * | |
4 | * Copyright (C) 2014 Texas Instruments Incorporated - http://www.ti.com | |
5 | * | |
6 | * Author: Jyri Sarha <jsarha@ti.com> | |
7 | * | |
8 | * This program is free software; you can redistribute it and/or | |
9 | * modify it under the terms of the GNU General Public License | |
10 | * version 2 as published by the Free Software Foundation. | |
11 | * | |
12 | * This program is distributed in the hope that it will be useful, but | |
13 | * WITHOUT ANY WARRANTY; without even the implied warranty of | |
14 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
15 | * General Public License for more details. | |
16 | */ | |
17 | ||
18 | #ifndef __HDMI_CODEC_H__ | |
19 | #define __HDMI_CODEC_H__ | |
20 | ||
21 | #include <linux/hdmi.h> | |
22 | #include <drm/drm_edid.h> | |
23 | #include <sound/asoundef.h> | |
24 | #include <uapi/sound/asound.h> | |
25 | ||
26 | /* | |
27 | * Protocol between ASoC cpu-dai and HDMI-encoder | |
28 | */ | |
29 | struct hdmi_codec_daifmt { | |
30 | enum { | |
31 | HDMI_I2S, | |
32 | HDMI_RIGHT_J, | |
33 | HDMI_LEFT_J, | |
34 | HDMI_DSP_A, | |
35 | HDMI_DSP_B, | |
36 | HDMI_AC97, | |
37 | HDMI_SPDIF, | |
38 | } fmt; | |
9e4d59ad TS |
39 | unsigned int bit_clk_inv:1; |
40 | unsigned int frame_clk_inv:1; | |
41 | unsigned int bit_clk_master:1; | |
42 | unsigned int frame_clk_master:1; | |
09184118 JS |
43 | }; |
44 | ||
45 | /* | |
46 | * HDMI audio parameters | |
47 | */ | |
48 | struct hdmi_codec_params { | |
49 | struct hdmi_audio_infoframe cea; | |
50 | struct snd_aes_iec958 iec; | |
51 | int sample_rate; | |
52 | int sample_width; | |
53 | int channels; | |
54 | }; | |
55 | ||
efc9194b | 56 | struct hdmi_codec_pdata; |
09184118 JS |
57 | struct hdmi_codec_ops { |
58 | /* | |
59 | * Called when ASoC starts an audio stream setup. | |
60 | * Optional | |
61 | */ | |
efc9194b | 62 | int (*audio_startup)(struct device *dev, void *data); |
09184118 JS |
63 | |
64 | /* | |
65 | * Configures HDMI-encoder for audio stream. | |
66 | * Mandatory | |
67 | */ | |
efc9194b | 68 | int (*hw_params)(struct device *dev, void *data, |
09184118 JS |
69 | struct hdmi_codec_daifmt *fmt, |
70 | struct hdmi_codec_params *hparms); | |
71 | ||
72 | /* | |
73 | * Shuts down the audio stream. | |
74 | * Mandatory | |
75 | */ | |
efc9194b | 76 | void (*audio_shutdown)(struct device *dev, void *data); |
09184118 JS |
77 | |
78 | /* | |
79 | * Mute/unmute HDMI audio stream. | |
80 | * Optional | |
81 | */ | |
efc9194b | 82 | int (*digital_mute)(struct device *dev, void *data, bool enable); |
09184118 JS |
83 | |
84 | /* | |
85 | * Provides EDID-Like-Data from connected HDMI device. | |
86 | * Optional | |
87 | */ | |
efc9194b KM |
88 | int (*get_eld)(struct device *dev, void *data, |
89 | uint8_t *buf, size_t len); | |
09184118 JS |
90 | }; |
91 | ||
92 | /* HDMI codec initalization data */ | |
93 | struct hdmi_codec_pdata { | |
94 | const struct hdmi_codec_ops *ops; | |
95 | uint i2s:1; | |
96 | uint spdif:1; | |
97 | int max_i2s_channels; | |
efc9194b | 98 | void *data; |
09184118 JS |
99 | }; |
100 | ||
101 | #define HDMI_CODEC_DRV_NAME "hdmi-audio-codec" | |
102 | ||
103 | #endif /* __HDMI_CODEC_H__ */ |