projects / mirror_ubuntu-zesty-kernel.git / blame
| Commit | Line | Data |
|---|---|---|
| 09184118 JS |
1 | /* |
| 2 | * hdmi-codec.h - HDMI Codec driver API | |
| 3 | * | |
| 4 | * Copyright (C) 2014 Texas Instruments Incorporated - http://www.ti.com | |
| 5 | * | |
| 6 | * Author: Jyri Sarha <jsarha@ti.com> | |
| 7 | * | |
| 8 | * This program is free software; you can redistribute it and/or | |
| 9 | * modify it under the terms of the GNU General Public License | |
| 10 | * version 2 as published by the Free Software Foundation. | |
| 11 | * | |
| 12 | * This program is distributed in the hope that it will be useful, but | |
| 13 | * WITHOUT ANY WARRANTY; without even the implied warranty of | |
| 14 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
| 15 | * General Public License for more details. | |
| 16 | */ | |
| 17 | ||
| 18 | #ifndef __HDMI_CODEC_H__ | |
| 19 | #define __HDMI_CODEC_H__ | |
| 20 | ||
| 21 | #include <linux/hdmi.h> | |
| 22 | #include <drm/drm_edid.h> | |
| 23 | #include <sound/asoundef.h> | |
| 24 | #include <uapi/sound/asound.h> | |
| 25 | ||
| 26 | /* | |
| 27 | * Protocol between ASoC cpu-dai and HDMI-encoder | |
| 28 | */ | |
| 29 | struct hdmi_codec_daifmt { | |
| 30 | enum { | |
| 31 | HDMI_I2S, | |
| 32 | HDMI_RIGHT_J, | |
| 33 | HDMI_LEFT_J, | |
| 34 | HDMI_DSP_A, | |
| 35 | HDMI_DSP_B, | |
| 36 | HDMI_AC97, | |
| 37 | HDMI_SPDIF, | |
| 38 | } fmt; | |
| 39 | int bit_clk_inv:1; | |
| 40 | int frame_clk_inv:1; | |
| 41 | int bit_clk_master:1; | |
| 42 | int frame_clk_master:1; | |
| 43 | }; | |
| 44 | ||
| 45 | /* | |
| 46 | * HDMI audio parameters | |
| 47 | */ | |
| 48 | struct hdmi_codec_params { | |
| 49 | struct hdmi_audio_infoframe cea; | |
| 50 | struct snd_aes_iec958 iec; | |
| 51 | int sample_rate; | |
| 52 | int sample_width; | |
| 53 | int channels; | |
| 54 | }; | |
| 55 | ||
| 56 | struct hdmi_codec_ops { | |
| 57 | /* | |
| 58 | * Called when ASoC starts an audio stream setup. | |
| 59 | * Optional | |
| 60 | */ | |
| 61 | int (*audio_startup)(struct device *dev); | |
| 62 | ||
| 63 | /* | |
| 64 | * Configures HDMI-encoder for audio stream. | |
| 65 | * Mandatory | |
| 66 | */ | |
| 67 | int (*hw_params)(struct device *dev, | |
| 68 | struct hdmi_codec_daifmt *fmt, | |
| 69 | struct hdmi_codec_params *hparms); | |
| 70 | ||
| 71 | /* | |
| 72 | * Shuts down the audio stream. | |
| 73 | * Mandatory | |
| 74 | */ | |
| 75 | void (*audio_shutdown)(struct device *dev); | |
| 76 | ||
| 77 | /* | |
| 78 | * Mute/unmute HDMI audio stream. | |
| 79 | * Optional | |
| 80 | */ | |
| 81 | int (*digital_mute)(struct device *dev, bool enable); | |
| 82 | ||
| 83 | /* | |
| 84 | * Provides EDID-Like-Data from connected HDMI device. | |
| 85 | * Optional | |
| 86 | */ | |
| 87 | int (*get_eld)(struct device *dev, uint8_t *buf, size_t len); | |
| 88 | }; | |
| 89 | ||
| 90 | /* HDMI codec initalization data */ | |
| 91 | struct hdmi_codec_pdata { | |
| 92 | const struct hdmi_codec_ops *ops; | |
| 93 | uint i2s:1; | |
| 94 | uint spdif:1; | |
| 95 | int max_i2s_channels; | |
| 96 | }; | |
| 97 | ||
| 98 | #define HDMI_CODEC_DRV_NAME "hdmi-audio-codec" | |
| 99 | ||
| 100 | #endif /* __HDMI_CODEC_H__ */ |