2fef64eec2
The IEC958 status bit is usually set by the userspace after hw_params has been called, so in order to use whatever is set by the userspace, we need to implement the prepare hook. Let's add it to the hdmi_codec_ops, and mandate that either prepare or hw_params is implemented. Signed-off-by: Maxime Ripard <maxime@cerno.tech> Acked-by: Mark Brown <broonie@kernel.org> Link: https://lore.kernel.org/r/20210525132354.297468-6-maxime@cerno.tech
138 lines
2.9 KiB
C
138 lines
2.9 KiB
C
/* 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_master:1;
|
|
unsigned int frame_clk_master: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__ */
|