1 /* SPDX-License-Identifier: GPL-2.0-only */
3 * hdmi-codec.h - HDMI Codec driver API
5 * Copyright (C) 2014 Texas Instruments Incorporated - http://www.ti.com
7 * Author: Jyri Sarha <jsarha@ti.com>
10 #ifndef __HDMI_CODEC_H__
11 #define __HDMI_CODEC_H__
13 #include <linux/of_graph.h>
14 #include <linux/hdmi.h>
15 #include <drm/drm_edid.h>
16 #include <sound/asoundef.h>
17 #include <sound/soc.h>
18 #include <uapi/sound/asound.h>
21 * Protocol between ASoC cpu-dai and HDMI-encoder
23 struct hdmi_codec_daifmt {
33 unsigned int bit_clk_inv:1;
34 unsigned int frame_clk_inv:1;
35 unsigned int bit_clk_master:1;
36 unsigned int frame_clk_master:1;
40 * HDMI audio parameters
42 struct hdmi_codec_params {
43 struct hdmi_audio_infoframe cea;
44 struct snd_aes_iec958 iec;
50 struct hdmi_codec_pdata;
51 struct hdmi_codec_ops {
53 * Called when ASoC starts an audio stream setup.
56 int (*audio_startup)(struct device *dev, void *data);
59 * Configures HDMI-encoder for audio stream.
62 int (*hw_params)(struct device *dev, void *data,
63 struct hdmi_codec_daifmt *fmt,
64 struct hdmi_codec_params *hparms);
67 * Shuts down the audio stream.
70 void (*audio_shutdown)(struct device *dev, void *data);
73 * Mute/unmute HDMI audio stream.
76 int (*digital_mute)(struct device *dev, void *data, bool enable);
79 * Provides EDID-Like-Data from connected HDMI device.
82 int (*get_eld)(struct device *dev, void *data,
83 uint8_t *buf, size_t len);
89 int (*get_dai_id)(struct snd_soc_component *comment,
90 struct device_node *endpoint);
93 /* HDMI codec initalization data */
94 struct hdmi_codec_pdata {
95 const struct hdmi_codec_ops *ops;
102 #define HDMI_CODEC_DRV_NAME "hdmi-audio-codec"
104 #endif /* __HDMI_CODEC_H__ */