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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 | ||
96203fb4 | 21 | #include <linux/of_graph.h> |
09184118 JS |
22 | #include <linux/hdmi.h> |
23 | #include <drm/drm_edid.h> | |
24 | #include <sound/asoundef.h> | |
96203fb4 | 25 | #include <sound/soc.h> |
09184118 JS |
26 | #include <uapi/sound/asound.h> |
27 | ||
28 | /* | |
29 | * Protocol between ASoC cpu-dai and HDMI-encoder | |
30 | */ | |
31 | struct hdmi_codec_daifmt { | |
32 | enum { | |
33 | HDMI_I2S, | |
34 | HDMI_RIGHT_J, | |
35 | HDMI_LEFT_J, | |
36 | HDMI_DSP_A, | |
37 | HDMI_DSP_B, | |
38 | HDMI_AC97, | |
39 | HDMI_SPDIF, | |
40 | } fmt; | |
9e4d59ad TS |
41 | unsigned int bit_clk_inv:1; |
42 | unsigned int frame_clk_inv:1; | |
43 | unsigned int bit_clk_master:1; | |
44 | unsigned int frame_clk_master:1; | |
09184118 JS |
45 | }; |
46 | ||
47 | /* | |
48 | * HDMI audio parameters | |
49 | */ | |
50 | struct hdmi_codec_params { | |
51 | struct hdmi_audio_infoframe cea; | |
52 | struct snd_aes_iec958 iec; | |
53 | int sample_rate; | |
54 | int sample_width; | |
55 | int channels; | |
56 | }; | |
57 | ||
efc9194b | 58 | struct hdmi_codec_pdata; |
09184118 JS |
59 | struct hdmi_codec_ops { |
60 | /* | |
61 | * Called when ASoC starts an audio stream setup. | |
62 | * Optional | |
63 | */ | |
efc9194b | 64 | int (*audio_startup)(struct device *dev, void *data); |
09184118 JS |
65 | |
66 | /* | |
67 | * Configures HDMI-encoder for audio stream. | |
68 | * Mandatory | |
69 | */ | |
efc9194b | 70 | int (*hw_params)(struct device *dev, void *data, |
09184118 JS |
71 | struct hdmi_codec_daifmt *fmt, |
72 | struct hdmi_codec_params *hparms); | |
73 | ||
74 | /* | |
75 | * Shuts down the audio stream. | |
76 | * Mandatory | |
77 | */ | |
efc9194b | 78 | void (*audio_shutdown)(struct device *dev, void *data); |
09184118 JS |
79 | |
80 | /* | |
81 | * Mute/unmute HDMI audio stream. | |
82 | * Optional | |
83 | */ | |
efc9194b | 84 | int (*digital_mute)(struct device *dev, void *data, bool enable); |
09184118 JS |
85 | |
86 | /* | |
87 | * Provides EDID-Like-Data from connected HDMI device. | |
88 | * Optional | |
89 | */ | |
efc9194b KM |
90 | int (*get_eld)(struct device *dev, void *data, |
91 | uint8_t *buf, size_t len); | |
96203fb4 KM |
92 | |
93 | /* | |
94 | * Getting DAI ID | |
95 | * Optional | |
96 | */ | |
97 | int (*get_dai_id)(struct snd_soc_component *comment, | |
98 | struct device_node *endpoint); | |
09184118 JS |
99 | }; |
100 | ||
101 | /* HDMI codec initalization data */ | |
102 | struct hdmi_codec_pdata { | |
103 | const struct hdmi_codec_ops *ops; | |
104 | uint i2s:1; | |
105 | uint spdif:1; | |
106 | int max_i2s_channels; | |
efc9194b | 107 | void *data; |
09184118 JS |
108 | }; |
109 | ||
110 | #define HDMI_CODEC_DRV_NAME "hdmi-audio-codec" | |
111 | ||
112 | #endif /* __HDMI_CODEC_H__ */ |