/* SPDX-License-Identifier: GPL-2.0 */
/* Copyright 2011 Broadcom Corporation.  All rights reserved. */

#ifndef _VC_AUDIO_DEFS_H_
#define _VC_AUDIO_DEFS_H_

#define VC_AUDIOSERV_MIN_VER 1
#define VC_AUDIOSERV_VER 2

/* FourCC codes used for VCHI communication */
#define VC_AUDIO_WRITE_COOKIE1 VCHIQ_MAKE_FOURCC('B', 'C', 'M', 'A')
#define VC_AUDIO_WRITE_COOKIE2 VCHIQ_MAKE_FOURCC('D', 'A', 'T', 'A')

/*
 *  List of screens that are currently supported
 *  All message types supported for HOST->VC direction
 */

enum vc_audio_msg_type {
        VC_AUDIO_MSG_TYPE_RESULT, // Generic result
        VC_AUDIO_MSG_TYPE_COMPLETE, // Generic result
        VC_AUDIO_MSG_TYPE_CONFIG, // Configure audio
        VC_AUDIO_MSG_TYPE_CONTROL, // Configure audio
        VC_AUDIO_MSG_TYPE_OPEN, // Configure audio
        VC_AUDIO_MSG_TYPE_CLOSE, // Configure audio
        VC_AUDIO_MSG_TYPE_START, // Configure audio
        VC_AUDIO_MSG_TYPE_STOP, // Configure audio
        VC_AUDIO_MSG_TYPE_WRITE, // Configure audio
        VC_AUDIO_MSG_TYPE_MAX
};

/* configure the audio */

struct vc_audio_config {
        u32 channels;
        u32 samplerate;
        u32 bps;
};

struct vc_audio_control {
        u32 volume;
        u32 dest;
};

struct vc_audio_open {
        u32 dummy;
};

struct vc_audio_close {
        u32 dummy;
};

struct vc_audio_start {
        u32 dummy;
};

struct vc_audio_stop {
        u32 draining;
};

/* configure the write audio samples */
struct vc_audio_write {
        u32 count; // in bytes
        u32 cookie1;
        u32 cookie2;
        s16 silence;
        s16 max_packet;
};

/* Generic result for a request (VC->HOST) */
struct vc_audio_result {
        s32 success; // Success value
};

/* Generic result for a request (VC->HOST) */
struct vc_audio_complete {
        s32 count; // Success value
        u32 cookie1;
        u32 cookie2;
};

/* Message header for all messages in HOST->VC direction */
struct vc_audio_msg {
        s32 type; /* Message type (VC_AUDIO_MSG_TYPE) */
        union {
                struct vc_audio_config config;
                struct vc_audio_control control;
                struct vc_audio_open open;
                struct vc_audio_close close;
                struct vc_audio_start start;
                struct vc_audio_stop stop;
                struct vc_audio_write write;
                struct vc_audio_result result;
                struct vc_audio_complete complete;
        };
};

#endif /* _VC_AUDIO_DEFS_H_ */