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usr
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linux-headers-6.8.0-36-generic
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sound
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hdmi-codec.h
/* SPDX-License-Identifier: GPL-2.0-only */ /* * hdmi-codec.h - HDMI Codec driver API * * Copyright (C) 2014 Texas Instruments Incorporated - https://www.ti.com * * Author: Jyri Sarha <jsarha@ti.com> */ #ifndef __HDMI_CODEC_H__ #define __HDMI_CODEC_H__ #include <linux/of_graph.h> #include <linux/hdmi.h> #include <drm/drm_edid.h> #include <sound/asoundef.h> #include <sound/soc.h> #include <uapi/sound/asound.h> /* * Protocol between ASoC cpu-dai and HDMI-encoder */ struct hdmi_codec_daifmt { enum { HDMI_I2S, HDMI_RIGHT_J, HDMI_LEFT_J, HDMI_DSP_A, HDMI_DSP_B, HDMI_AC97, HDMI_SPDIF, } fmt; unsigned int bit_clk_inv:1; unsigned int frame_clk_inv:1; unsigned int bit_clk_provider:1; unsigned int frame_clk_provider:1; /* bit_fmt could be standard PCM format or * IEC958 encoded format. ALSA IEC958 plugin will pass * IEC958_SUBFRAME format to the underneath driver. */ snd_pcm_format_t bit_fmt; }; /* * HDMI audio parameters */ struct hdmi_codec_params { struct hdmi_audio_infoframe cea; struct snd_aes_iec958 iec; int sample_rate; int sample_width; int channels; }; typedef void (*hdmi_codec_plugged_cb)(struct device *dev, bool plugged); struct hdmi_codec_pdata; struct hdmi_codec_ops { /* * Called when ASoC starts an audio stream setup. * Optional */ int (*audio_startup)(struct device *dev, void *data); /* * Configures HDMI-encoder for audio stream. * Having either prepare or hw_params is mandatory. */ int (*hw_params)(struct device *dev, void *data, struct hdmi_codec_daifmt *fmt, struct hdmi_codec_params *hparms); /* * Configures HDMI-encoder for audio stream. Can be called * multiple times for each setup. * * Having either prepare or hw_params is mandatory. */ int (*prepare)(struct device *dev, void *data, struct hdmi_codec_daifmt *fmt, struct hdmi_codec_params *hparms); /* * Shuts down the audio stream. * Mandatory */ void (*audio_shutdown)(struct device *dev, void *data); /* * Mute/unmute HDMI audio stream. * Optional */ int (*mute_stream)(struct device *dev, void *data, bool enable, int direction); /* * Provides EDID-Like-Data from connected HDMI device. * Optional */ int (*get_eld)(struct device *dev, void *data, uint8_t *buf, size_t len); /* * Getting DAI ID * Optional */ int (*get_dai_id)(struct snd_soc_component *comment, struct device_node *endpoint); /* * Hook callback function to handle connector plug event. * Optional */ int (*hook_plugged_cb)(struct device *dev, void *data, hdmi_codec_plugged_cb fn, struct device *codec_dev); /* bit field */ unsigned int no_capture_mute:1; }; /* HDMI codec initalization data */ struct hdmi_codec_pdata { const struct hdmi_codec_ops *ops; uint i2s:1; uint no_i2s_playback:1; uint no_i2s_capture:1; uint spdif:1; uint no_spdif_playback:1; uint no_spdif_capture:1; int max_i2s_channels; void *data; }; struct snd_soc_component; struct snd_soc_jack; #define HDMI_CODEC_DRV_NAME "hdmi-audio-codec" #endif /* __HDMI_CODEC_H__ */
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