/* 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 <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,			  void *data); 	/*	 * 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;	u64 i2s_formats;	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;	uint no_capture_mute: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__ */