Merge tag 'for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mst/vhost
[cris-mirror.git] / include / sound / hdmi-codec.h
blob9483c55f871b992b78e8059f70017848c3d2ad09
1 /*
2 * hdmi-codec.h - HDMI Codec driver API
4 * Copyright (C) 2014 Texas Instruments Incorporated - http://www.ti.com
6 * Author: Jyri Sarha <jsarha@ti.com>
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.
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.
18 #ifndef __HDMI_CODEC_H__
19 #define __HDMI_CODEC_H__
21 #include <linux/of_graph.h>
22 #include <linux/hdmi.h>
23 #include <drm/drm_edid.h>
24 #include <sound/asoundef.h>
25 #include <sound/soc.h>
26 #include <uapi/sound/asound.h>
29 * Protocol between ASoC cpu-dai and HDMI-encoder
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;
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;
48 * HDMI audio parameters
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;
58 struct hdmi_codec_pdata;
59 struct hdmi_codec_ops {
61 * Called when ASoC starts an audio stream setup.
62 * Optional
64 int (*audio_startup)(struct device *dev, void *data);
67 * Configures HDMI-encoder for audio stream.
68 * Mandatory
70 int (*hw_params)(struct device *dev, void *data,
71 struct hdmi_codec_daifmt *fmt,
72 struct hdmi_codec_params *hparms);
75 * Shuts down the audio stream.
76 * Mandatory
78 void (*audio_shutdown)(struct device *dev, void *data);
81 * Mute/unmute HDMI audio stream.
82 * Optional
84 int (*digital_mute)(struct device *dev, void *data, bool enable);
87 * Provides EDID-Like-Data from connected HDMI device.
88 * Optional
90 int (*get_eld)(struct device *dev, void *data,
91 uint8_t *buf, size_t len);
94 * Getting DAI ID
95 * Optional
97 int (*get_dai_id)(struct snd_soc_component *comment,
98 struct device_node *endpoint);
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;
107 void *data;
110 #define HDMI_CODEC_DRV_NAME "hdmi-audio-codec"
112 #endif /* __HDMI_CODEC_H__ */