123456789101112131415161718192021222324252627282930313233343536373839404142434445464748495051525354555657585960616263646566676869707172737475767778798081828384858687888990919293949596979899100101102103104105106107108109110111112113114115116117118119120121122123124125126127128129130131132133134135136137 |
- /* 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 <[email protected]>
- */
- #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 spdif: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__ */
|