1 /* SPDX-License-Identifier: GPL-2.0-only */ <<
2 /* 1 /*
3 * hdmi-codec.h - HDMI Codec driver API 2 * hdmi-codec.h - HDMI Codec driver API
4 * 3 *
5 * Copyright (C) 2014 Texas Instruments Incorp !! 4 * Copyright (C) 2014 Texas Instruments Incorporated - http://www.ti.com
6 * 5 *
7 * Author: Jyri Sarha <jsarha@ti.com> 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.
8 */ 16 */
9 17
10 #ifndef __HDMI_CODEC_H__ 18 #ifndef __HDMI_CODEC_H__
11 #define __HDMI_CODEC_H__ 19 #define __HDMI_CODEC_H__
12 20
13 #include <linux/of_graph.h> 21 #include <linux/of_graph.h>
14 #include <linux/hdmi.h> 22 #include <linux/hdmi.h>
>> 23 #include <drm/drm_edid.h>
15 #include <sound/asoundef.h> 24 #include <sound/asoundef.h>
16 #include <sound/soc.h> 25 #include <sound/soc.h>
17 #include <uapi/sound/asound.h> 26 #include <uapi/sound/asound.h>
18 27
19 /* 28 /*
20 * Protocol between ASoC cpu-dai and HDMI-enco 29 * Protocol between ASoC cpu-dai and HDMI-encoder
21 */ 30 */
22 struct hdmi_codec_daifmt { 31 struct hdmi_codec_daifmt {
23 enum { 32 enum {
24 HDMI_I2S, 33 HDMI_I2S,
25 HDMI_RIGHT_J, 34 HDMI_RIGHT_J,
26 HDMI_LEFT_J, 35 HDMI_LEFT_J,
27 HDMI_DSP_A, 36 HDMI_DSP_A,
28 HDMI_DSP_B, 37 HDMI_DSP_B,
29 HDMI_AC97, 38 HDMI_AC97,
30 HDMI_SPDIF, 39 HDMI_SPDIF,
31 } fmt; 40 } fmt;
32 unsigned int bit_clk_inv:1; 41 unsigned int bit_clk_inv:1;
33 unsigned int frame_clk_inv:1; 42 unsigned int frame_clk_inv:1;
34 unsigned int bit_clk_provider:1; !! 43 unsigned int bit_clk_master:1;
35 unsigned int frame_clk_provider:1; !! 44 unsigned int frame_clk_master:1;
36 /* bit_fmt could be standard PCM forma <<
37 * IEC958 encoded format. ALSA IEC958 <<
38 * IEC958_SUBFRAME format to the under <<
39 */ <<
40 snd_pcm_format_t bit_fmt; <<
41 }; 45 };
42 46
43 /* 47 /*
44 * HDMI audio parameters 48 * HDMI audio parameters
45 */ 49 */
46 struct hdmi_codec_params { 50 struct hdmi_codec_params {
47 struct hdmi_audio_infoframe cea; 51 struct hdmi_audio_infoframe cea;
48 struct snd_aes_iec958 iec; 52 struct snd_aes_iec958 iec;
49 int sample_rate; 53 int sample_rate;
50 int sample_width; 54 int sample_width;
51 int channels; 55 int channels;
52 }; 56 };
53 57
54 typedef void (*hdmi_codec_plugged_cb)(struct d <<
55 bool plu <<
56 <<
57 struct hdmi_codec_pdata; 58 struct hdmi_codec_pdata;
58 struct hdmi_codec_ops { 59 struct hdmi_codec_ops {
59 /* 60 /*
60 * Called when ASoC starts an audio st 61 * Called when ASoC starts an audio stream setup.
61 * Optional 62 * Optional
62 */ 63 */
63 int (*audio_startup)(struct device *de 64 int (*audio_startup)(struct device *dev, void *data);
64 65
65 /* 66 /*
66 * Configures HDMI-encoder for audio s 67 * Configures HDMI-encoder for audio stream.
67 * Having either prepare or hw_params !! 68 * Mandatory
68 */ 69 */
69 int (*hw_params)(struct device *dev, v 70 int (*hw_params)(struct device *dev, void *data,
70 struct hdmi_codec_dai 71 struct hdmi_codec_daifmt *fmt,
71 struct hdmi_codec_par 72 struct hdmi_codec_params *hparms);
72 73
73 /* 74 /*
74 * Configures HDMI-encoder for audio s <<
75 * multiple times for each setup. <<
76 * <<
77 * Having either prepare or hw_params <<
78 */ <<
79 int (*prepare)(struct device *dev, voi <<
80 struct hdmi_codec_daifm <<
81 struct hdmi_codec_param <<
82 <<
83 /* <<
84 * Shuts down the audio stream. 75 * Shuts down the audio stream.
85 * Mandatory 76 * Mandatory
86 */ 77 */
87 void (*audio_shutdown)(struct device * 78 void (*audio_shutdown)(struct device *dev, void *data);
88 79
89 /* 80 /*
90 * Mute/unmute HDMI audio stream. 81 * Mute/unmute HDMI audio stream.
91 * Optional 82 * Optional
92 */ 83 */
93 int (*mute_stream)(struct device *dev, !! 84 int (*digital_mute)(struct device *dev, void *data, bool enable);
94 bool enable, int di <<
95 85
96 /* 86 /*
97 * Provides EDID-Like-Data from connec 87 * Provides EDID-Like-Data from connected HDMI device.
98 * Optional 88 * Optional
99 */ 89 */
100 int (*get_eld)(struct device *dev, voi 90 int (*get_eld)(struct device *dev, void *data,
101 uint8_t *buf, size_t le 91 uint8_t *buf, size_t len);
102 92
103 /* 93 /*
104 * Getting DAI ID 94 * Getting DAI ID
105 * Optional 95 * Optional
106 */ 96 */
107 int (*get_dai_id)(struct snd_soc_compo 97 int (*get_dai_id)(struct snd_soc_component *comment,
108 struct device_node * 98 struct device_node *endpoint);
109 <<
110 /* <<
111 * Hook callback function to handle co <<
112 * Optional <<
113 */ <<
114 int (*hook_plugged_cb)(struct device * <<
115 hdmi_codec_plug <<
116 struct device * <<
117 <<
118 /* bit field */ <<
119 unsigned int no_capture_mute:1; <<
120 }; 99 };
121 100
122 /* HDMI codec initalization data */ 101 /* HDMI codec initalization data */
123 struct hdmi_codec_pdata { 102 struct hdmi_codec_pdata {
124 const struct hdmi_codec_ops *ops; 103 const struct hdmi_codec_ops *ops;
125 uint i2s:1; 104 uint i2s:1;
126 uint no_i2s_playback:1; <<
127 uint no_i2s_capture:1; <<
128 uint spdif:1; 105 uint spdif:1;
129 uint no_spdif_playback:1; <<
130 uint no_spdif_capture:1; <<
131 int max_i2s_channels; 106 int max_i2s_channels;
132 void *data; 107 void *data;
133 }; 108 };
134 <<
135 struct snd_soc_component; <<
136 struct snd_soc_jack; <<
137 109
138 #define HDMI_CODEC_DRV_NAME "hdmi-audio-codec" 110 #define HDMI_CODEC_DRV_NAME "hdmi-audio-codec"
139 111
140 #endif /* __HDMI_CODEC_H__ */ 112 #endif /* __HDMI_CODEC_H__ */
141 113
Linux® is a registered trademark of Linus Torvalds in the United States and other countries.
TOMOYO® is a registered trademark of NTT DATA CORPORATION.