cachepc-linux

Fork of AMDESE/linux with modifications for CachePC side-channel attack
git clone https://git.sinitax.com/sinitax/cachepc-linux
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hdmi-codec.h (3011B)

      1/* SPDX-License-Identifier: GPL-2.0-only */
      2/*
      3 * hdmi-codec.h - HDMI Codec driver API
      4 *
      5 * Copyright (C) 2014 Texas Instruments Incorporated - https://www.ti.com
      6 *
      7 * Author: Jyri Sarha <jsarha@ti.com>
      8 */
      9
     10#ifndef __HDMI_CODEC_H__
     11#define __HDMI_CODEC_H__
     12
     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>
     19
     20/*
     21 * Protocol between ASoC cpu-dai and HDMI-encoder
     22 */
     23struct hdmi_codec_daifmt {
     24	enum {
     25		HDMI_I2S,
     26		HDMI_RIGHT_J,
     27		HDMI_LEFT_J,
     28		HDMI_DSP_A,
     29		HDMI_DSP_B,
     30		HDMI_AC97,
     31		HDMI_SPDIF,
     32	} fmt;
     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;
     37	/* bit_fmt could be standard PCM format or
     38	 * IEC958 encoded format. ALSA IEC958 plugin will pass
     39	 * IEC958_SUBFRAME format to the underneath driver.
     40	 */
     41	snd_pcm_format_t bit_fmt;
     42};
     43
     44/*
     45 * HDMI audio parameters
     46 */
     47struct hdmi_codec_params {
     48	struct hdmi_audio_infoframe cea;
     49	struct snd_aes_iec958 iec;
     50	int sample_rate;
     51	int sample_width;
     52	int channels;
     53};
     54
     55typedef void (*hdmi_codec_plugged_cb)(struct device *dev,
     56				      bool plugged);
     57
     58struct hdmi_codec_pdata;
     59struct hdmi_codec_ops {
     60	/*
     61	 * Called when ASoC starts an audio stream setup.
     62	 * Optional
     63	 */
     64	int (*audio_startup)(struct device *dev, void *data);
     65
     66	/*
     67	 * Configures HDMI-encoder for audio stream.
     68	 * Having either prepare or hw_params is mandatory.
     69	 */
     70	int (*hw_params)(struct device *dev, void *data,
     71			 struct hdmi_codec_daifmt *fmt,
     72			 struct hdmi_codec_params *hparms);
     73
     74	/*
     75	 * Configures HDMI-encoder for audio stream. Can be called
     76	 * multiple times for each setup.
     77	 *
     78	 * Having either prepare or hw_params is mandatory.
     79	 */
     80	int (*prepare)(struct device *dev, void *data,
     81		       struct hdmi_codec_daifmt *fmt,
     82		       struct hdmi_codec_params *hparms);
     83
     84	/*
     85	 * Shuts down the audio stream.
     86	 * Mandatory
     87	 */
     88	void (*audio_shutdown)(struct device *dev, void *data);
     89
     90	/*
     91	 * Mute/unmute HDMI audio stream.
     92	 * Optional
     93	 */
     94	int (*mute_stream)(struct device *dev, void *data,
     95			   bool enable, int direction);
     96
     97	/*
     98	 * Provides EDID-Like-Data from connected HDMI device.
     99	 * Optional
    100	 */
    101	int (*get_eld)(struct device *dev, void *data,
    102		       uint8_t *buf, size_t len);
    103
    104	/*
    105	 * Getting DAI ID
    106	 * Optional
    107	 */
    108	int (*get_dai_id)(struct snd_soc_component *comment,
    109			  struct device_node *endpoint);
    110
    111	/*
    112	 * Hook callback function to handle connector plug event.
    113	 * Optional
    114	 */
    115	int (*hook_plugged_cb)(struct device *dev, void *data,
    116			       hdmi_codec_plugged_cb fn,
    117			       struct device *codec_dev);
    118
    119	/* bit field */
    120	unsigned int no_capture_mute:1;
    121};
    122
    123/* HDMI codec initalization data */
    124struct hdmi_codec_pdata {
    125	const struct hdmi_codec_ops *ops;
    126	uint i2s:1;
    127	uint spdif:1;
    128	int max_i2s_channels;
    129	void *data;
    130};
    131
    132struct snd_soc_component;
    133struct snd_soc_jack;
    134
    135#define HDMI_CODEC_DRV_NAME "hdmi-audio-codec"
    136
    137#endif /* __HDMI_CODEC_H__ */