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git.ipfire.org Git - thirdparty/kernel/stable.git/blob - include/sound/hdmi-codec.h
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__ */