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/hdmi.h>
22 #include <drm/drm_edid.h>
23 #include <sound/asoundef.h>
24 #include <uapi/sound/asound.h>
27 * Protocol between ASoC cpu-dai and HDMI-encoder
29 struct hdmi_codec_daifmt {
42 int frame_clk_master:1;
46 * HDMI audio parameters
48 struct hdmi_codec_params {
49 struct hdmi_audio_infoframe cea;
50 struct snd_aes_iec958 iec;
56 struct hdmi_codec_ops {
58 * Called when ASoC starts an audio stream setup.
61 int (*audio_startup)(struct device *dev);
64 * Configures HDMI-encoder for audio stream.
67 int (*hw_params)(struct device *dev,
68 struct hdmi_codec_daifmt *fmt,
69 struct hdmi_codec_params *hparms);
72 * Shuts down the audio stream.
75 void (*audio_shutdown)(struct device *dev);
78 * Mute/unmute HDMI audio stream.
81 int (*digital_mute)(struct device *dev, bool enable);
84 * Provides EDID-Like-Data from connected HDMI device.
87 int (*get_eld)(struct device *dev, uint8_t *buf, size_t len);
90 /* HDMI codec initalization data */
91 struct hdmi_codec_pdata {
92 const struct hdmi_codec_ops *ops;
98 #define HDMI_CODEC_DRV_NAME "hdmi-audio-codec"
100 #endif /* __HDMI_CODEC_H__ */