1 /* SPDX-License-Identifier: GPL-2.0-only */ 1 /* SPDX-License-Identifier: GPL-2.0-only */
2 /* 2 /*
3 * hdmi-codec.h - HDMI Codec driver API 3 * hdmi-codec.h - HDMI Codec driver API
4 * 4 *
5 * Copyright (C) 2014 Texas Instruments Incorp 5 * Copyright (C) 2014 Texas Instruments Incorporated - https://www.ti.com
6 * 6 *
7 * Author: Jyri Sarha <jsarha@ti.com> 7 * Author: Jyri Sarha <jsarha@ti.com>
8 */ 8 */
9 9
10 #ifndef __HDMI_CODEC_H__ 10 #ifndef __HDMI_CODEC_H__
11 #define __HDMI_CODEC_H__ 11 #define __HDMI_CODEC_H__
12 12
13 #include <linux/of_graph.h> 13 #include <linux/of_graph.h>
14 #include <linux/hdmi.h> 14 #include <linux/hdmi.h>
>> 15 #include <drm/drm_edid.h>
15 #include <sound/asoundef.h> 16 #include <sound/asoundef.h>
16 #include <sound/soc.h> 17 #include <sound/soc.h>
17 #include <uapi/sound/asound.h> 18 #include <uapi/sound/asound.h>
18 19
19 /* 20 /*
20 * Protocol between ASoC cpu-dai and HDMI-enco 21 * Protocol between ASoC cpu-dai and HDMI-encoder
21 */ 22 */
22 struct hdmi_codec_daifmt { 23 struct hdmi_codec_daifmt {
23 enum { 24 enum {
24 HDMI_I2S, 25 HDMI_I2S,
25 HDMI_RIGHT_J, 26 HDMI_RIGHT_J,
26 HDMI_LEFT_J, 27 HDMI_LEFT_J,
27 HDMI_DSP_A, 28 HDMI_DSP_A,
28 HDMI_DSP_B, 29 HDMI_DSP_B,
29 HDMI_AC97, 30 HDMI_AC97,
30 HDMI_SPDIF, 31 HDMI_SPDIF,
31 } fmt; 32 } fmt;
32 unsigned int bit_clk_inv:1; 33 unsigned int bit_clk_inv:1;
33 unsigned int frame_clk_inv:1; 34 unsigned int frame_clk_inv:1;
34 unsigned int bit_clk_provider:1; 35 unsigned int bit_clk_provider:1;
35 unsigned int frame_clk_provider:1; 36 unsigned int frame_clk_provider:1;
36 /* bit_fmt could be standard PCM forma 37 /* bit_fmt could be standard PCM format or
37 * IEC958 encoded format. ALSA IEC958 38 * IEC958 encoded format. ALSA IEC958 plugin will pass
38 * IEC958_SUBFRAME format to the under 39 * IEC958_SUBFRAME format to the underneath driver.
39 */ 40 */
40 snd_pcm_format_t bit_fmt; 41 snd_pcm_format_t bit_fmt;
41 }; 42 };
42 43
43 /* 44 /*
44 * HDMI audio parameters 45 * HDMI audio parameters
45 */ 46 */
46 struct hdmi_codec_params { 47 struct hdmi_codec_params {
47 struct hdmi_audio_infoframe cea; 48 struct hdmi_audio_infoframe cea;
48 struct snd_aes_iec958 iec; 49 struct snd_aes_iec958 iec;
49 int sample_rate; 50 int sample_rate;
50 int sample_width; 51 int sample_width;
51 int channels; 52 int channels;
52 }; 53 };
53 54
54 typedef void (*hdmi_codec_plugged_cb)(struct d 55 typedef void (*hdmi_codec_plugged_cb)(struct device *dev,
55 bool plu 56 bool plugged);
56 57
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 * Having either prepare or hw_params is 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 * Configures HDMI-encoder for audio stream. Can be called
75 * multiple times for each setup. 76 * multiple times for each setup.
76 * 77 *
77 * Having either prepare or hw_params 78 * Having either prepare or hw_params is mandatory.
78 */ 79 */
79 int (*prepare)(struct device *dev, voi 80 int (*prepare)(struct device *dev, void *data,
80 struct hdmi_codec_daifm 81 struct hdmi_codec_daifmt *fmt,
81 struct hdmi_codec_param 82 struct hdmi_codec_params *hparms);
82 83
83 /* 84 /*
84 * Shuts down the audio stream. 85 * Shuts down the audio stream.
85 * Mandatory 86 * Mandatory
86 */ 87 */
87 void (*audio_shutdown)(struct device * 88 void (*audio_shutdown)(struct device *dev, void *data);
88 89
89 /* 90 /*
90 * Mute/unmute HDMI audio stream. 91 * Mute/unmute HDMI audio stream.
91 * Optional 92 * Optional
92 */ 93 */
93 int (*mute_stream)(struct device *dev, 94 int (*mute_stream)(struct device *dev, void *data,
94 bool enable, int di 95 bool enable, int direction);
95 96
96 /* 97 /*
97 * Provides EDID-Like-Data from connec 98 * Provides EDID-Like-Data from connected HDMI device.
98 * Optional 99 * Optional
99 */ 100 */
100 int (*get_eld)(struct device *dev, voi 101 int (*get_eld)(struct device *dev, void *data,
101 uint8_t *buf, size_t le 102 uint8_t *buf, size_t len);
102 103
103 /* 104 /*
104 * Getting DAI ID 105 * Getting DAI ID
105 * Optional 106 * Optional
106 */ 107 */
107 int (*get_dai_id)(struct snd_soc_compo 108 int (*get_dai_id)(struct snd_soc_component *comment,
108 struct device_node * 109 struct device_node *endpoint);
109 110
110 /* 111 /*
111 * Hook callback function to handle co 112 * Hook callback function to handle connector plug event.
112 * Optional 113 * Optional
113 */ 114 */
114 int (*hook_plugged_cb)(struct device * 115 int (*hook_plugged_cb)(struct device *dev, void *data,
115 hdmi_codec_plug 116 hdmi_codec_plugged_cb fn,
116 struct device * 117 struct device *codec_dev);
117 118
118 /* bit field */ 119 /* bit field */
119 unsigned int no_capture_mute:1; 120 unsigned int no_capture_mute:1;
120 }; 121 };
121 122
122 /* HDMI codec initalization data */ 123 /* HDMI codec initalization data */
123 struct hdmi_codec_pdata { 124 struct hdmi_codec_pdata {
124 const struct hdmi_codec_ops *ops; 125 const struct hdmi_codec_ops *ops;
125 uint i2s:1; 126 uint i2s:1;
126 uint no_i2s_playback:1; 127 uint no_i2s_playback:1;
127 uint no_i2s_capture:1; 128 uint no_i2s_capture:1;
128 uint spdif:1; 129 uint spdif:1;
129 uint no_spdif_playback:1; 130 uint no_spdif_playback:1;
130 uint no_spdif_capture:1; 131 uint no_spdif_capture:1;
131 int max_i2s_channels; 132 int max_i2s_channels;
132 void *data; 133 void *data;
133 }; 134 };
134 135
135 struct snd_soc_component; 136 struct snd_soc_component;
136 struct snd_soc_jack; 137 struct snd_soc_jack;
137 138
138 #define HDMI_CODEC_DRV_NAME "hdmi-audio-codec" 139 #define HDMI_CODEC_DRV_NAME "hdmi-audio-codec"
139 140
140 #endif /* __HDMI_CODEC_H__ */ 141 #endif /* __HDMI_CODEC_H__ */
141 142
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