| /* |
| * hdmi-codec.h - HDMI Codec driver API |
| * |
| * Copyright (C) 2014 Texas Instruments Incorporated - http://www.ti.com |
| * |
| * Author: Jyri Sarha <jsarha@ti.com> |
| * |
| * This program is free software; you can redistribute it and/or |
| * modify it under the terms of the GNU General Public License |
| * version 2 as published by the Free Software Foundation. |
| * |
| * This program is distributed in the hope that it will be useful, but |
| * WITHOUT ANY WARRANTY; without even the implied warranty of |
| * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
| * General Public License for more details. |
| */ |
| |
| #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; |
| }; |
| |
| 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); |
| }; |
| |
| /* 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; |
| }; |
| |
| #define HDMI_CODEC_DRV_NAME "hdmi-audio-codec" |
| |
| #endif /* __HDMI_CODEC_H__ */ |