/* SPDX-License-Identifier: GPL-2.0-only */ /* * hdmi-codec.h - HDMI Codec driver API * * Copyright (C) 2014 Texas Instruments Incorporated - http://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_master:1; unsigned int frame_clk_master:1; }; /* * 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. * Mandatory */ int (*hw_params)(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 (*digital_mute)(struct device *dev, void *data, bool enable); /* * 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); }; /* HDMI codec initalization data */ struct hdmi_codec_pdata { const struct hdmi_codec_ops *ops; uint i2s:1; uint spdif:1; int max_i2s_channels; void *data; }; struct snd_soc_component; struct snd_soc_jack; int hdmi_codec_set_jack_detect(struct snd_soc_component *component, struct snd_soc_jack *jack); #define HDMI_CODEC_DRV_NAME "hdmi-audio-codec" #endif /* __HDMI_CODEC_H__ */