Commit | Line | Data |
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1802d0be | 1 | /* SPDX-License-Identifier: GPL-2.0-only */ |
09184118 JS |
2 | /* |
3 | * hdmi-codec.h - HDMI Codec driver API | |
4 | * | |
7ed33ea6 | 5 | * Copyright (C) 2014 Texas Instruments Incorporated - https://www.ti.com |
09184118 JS |
6 | * |
7 | * Author: Jyri Sarha <jsarha@ti.com> | |
09184118 JS |
8 | */ |
9 | ||
10 | #ifndef __HDMI_CODEC_H__ | |
11 | #define __HDMI_CODEC_H__ | |
12 | ||
96203fb4 | 13 | #include <linux/of_graph.h> |
09184118 | 14 | #include <linux/hdmi.h> |
09184118 | 15 | #include <sound/asoundef.h> |
96203fb4 | 16 | #include <sound/soc.h> |
09184118 JS |
17 | #include <uapi/sound/asound.h> |
18 | ||
19 | /* | |
20 | * Protocol between ASoC cpu-dai and HDMI-encoder | |
21 | */ | |
22 | struct hdmi_codec_daifmt { | |
23 | enum { | |
24 | HDMI_I2S, | |
25 | HDMI_RIGHT_J, | |
26 | HDMI_LEFT_J, | |
27 | HDMI_DSP_A, | |
28 | HDMI_DSP_B, | |
29 | HDMI_AC97, | |
30 | HDMI_SPDIF, | |
31 | } fmt; | |
9e4d59ad TS |
32 | unsigned int bit_clk_inv:1; |
33 | unsigned int frame_clk_inv:1; | |
9f1c8677 MB |
34 | unsigned int bit_clk_provider:1; |
35 | unsigned int frame_clk_provider:1; | |
28785f54 SJH |
36 | /* bit_fmt could be standard PCM format or |
37 | * IEC958 encoded format. ALSA IEC958 plugin will pass | |
38 | * IEC958_SUBFRAME format to the underneath driver. | |
39 | */ | |
40 | snd_pcm_format_t bit_fmt; | |
09184118 JS |
41 | }; |
42 | ||
43 | /* | |
44 | * HDMI audio parameters | |
45 | */ | |
46 | struct hdmi_codec_params { | |
47 | struct hdmi_audio_infoframe cea; | |
48 | struct snd_aes_iec958 iec; | |
49 | int sample_rate; | |
50 | int sample_width; | |
51 | int channels; | |
52 | }; | |
53 | ||
6fa5963c CYC |
54 | typedef void (*hdmi_codec_plugged_cb)(struct device *dev, |
55 | bool plugged); | |
56 | ||
efc9194b | 57 | struct hdmi_codec_pdata; |
09184118 JS |
58 | struct hdmi_codec_ops { |
59 | /* | |
60 | * Called when ASoC starts an audio stream setup. | |
61 | * Optional | |
62 | */ | |
efc9194b | 63 | int (*audio_startup)(struct device *dev, void *data); |
09184118 JS |
64 | |
65 | /* | |
66 | * Configures HDMI-encoder for audio stream. | |
2fef64ee | 67 | * Having either prepare or hw_params is mandatory. |
09184118 | 68 | */ |
efc9194b | 69 | int (*hw_params)(struct device *dev, void *data, |
09184118 JS |
70 | struct hdmi_codec_daifmt *fmt, |
71 | struct hdmi_codec_params *hparms); | |
72 | ||
2fef64ee MR |
73 | /* |
74 | * Configures HDMI-encoder for audio stream. Can be called | |
75 | * multiple times for each setup. | |
76 | * | |
77 | * Having either prepare or hw_params is mandatory. | |
78 | */ | |
79 | int (*prepare)(struct device *dev, void *data, | |
80 | struct hdmi_codec_daifmt *fmt, | |
81 | struct hdmi_codec_params *hparms); | |
82 | ||
09184118 JS |
83 | /* |
84 | * Shuts down the audio stream. | |
85 | * Mandatory | |
86 | */ | |
efc9194b | 87 | void (*audio_shutdown)(struct device *dev, void *data); |
09184118 JS |
88 | |
89 | /* | |
90 | * Mute/unmute HDMI audio stream. | |
91 | * Optional | |
92 | */ | |
d789710f KM |
93 | int (*mute_stream)(struct device *dev, void *data, |
94 | bool enable, int direction); | |
09184118 JS |
95 | |
96 | /* | |
97 | * Provides EDID-Like-Data from connected HDMI device. | |
98 | * Optional | |
99 | */ | |
efc9194b KM |
100 | int (*get_eld)(struct device *dev, void *data, |
101 | uint8_t *buf, size_t len); | |
96203fb4 KM |
102 | |
103 | /* | |
104 | * Getting DAI ID | |
105 | * Optional | |
106 | */ | |
107 | int (*get_dai_id)(struct snd_soc_component *comment, | |
108 | struct device_node *endpoint); | |
6fa5963c CYC |
109 | |
110 | /* | |
111 | * Hook callback function to handle connector plug event. | |
112 | * Optional | |
113 | */ | |
114 | int (*hook_plugged_cb)(struct device *dev, void *data, | |
115 | hdmi_codec_plugged_cb fn, | |
116 | struct device *codec_dev); | |
d789710f KM |
117 | |
118 | /* bit field */ | |
119 | unsigned int no_capture_mute:1; | |
09184118 JS |
120 | }; |
121 | ||
122 | /* HDMI codec initalization data */ | |
123 | struct hdmi_codec_pdata { | |
124 | const struct hdmi_codec_ops *ops; | |
125 | uint i2s:1; | |
f77a066f MB |
126 | uint no_i2s_playback:1; |
127 | uint no_i2s_capture:1; | |
09184118 | 128 | uint spdif:1; |
f77a066f MB |
129 | uint no_spdif_playback:1; |
130 | uint no_spdif_capture:1; | |
09184118 | 131 | int max_i2s_channels; |
efc9194b | 132 | void *data; |
09184118 JS |
133 | }; |
134 | ||
6fa5963c CYC |
135 | struct snd_soc_component; |
136 | struct snd_soc_jack; | |
137 | ||
09184118 JS |
138 | #define HDMI_CODEC_DRV_NAME "hdmi-audio-codec" |
139 | ||
140 | #endif /* __HDMI_CODEC_H__ */ |