![Hendrik v. Raven](/assets/img/avatar_default.png)
The VC_AUDIO_MAX_MSG_LEN macro is not used by anything in the bcm2835-audio driver. Signed-off-by: Hendrik v. Raven <hendrik@consetetur.de> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
109 lines
2.6 KiB
C
109 lines
2.6 KiB
C
/*****************************************************************************
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* Copyright 2011 Broadcom Corporation. All rights reserved.
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*
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* Unless you and Broadcom execute a separate written software license
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* agreement governing use of this software, this software is licensed to you
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* under the terms of the GNU General Public License version 2, available at
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* http://www.broadcom.com/licenses/GPLv2.php (the "GPL").
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*
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* Notwithstanding the above, under no circumstances may you combine this
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* software in any way with any other Broadcom software provided under a
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* license other than the GPL, without Broadcom's express prior written
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* consent.
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*****************************************************************************/
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#ifndef _VC_AUDIO_DEFS_H_
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#define _VC_AUDIO_DEFS_H_
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#define VC_AUDIOSERV_MIN_VER 1
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#define VC_AUDIOSERV_VER 2
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/* FourCC code used for VCHI connection */
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#define VC_AUDIO_SERVER_NAME MAKE_FOURCC("AUDS")
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/*
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* List of screens that are currently supported
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* All message types supported for HOST->VC direction
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*/
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enum vc_audio_msg_type {
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VC_AUDIO_MSG_TYPE_RESULT, // Generic result
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VC_AUDIO_MSG_TYPE_COMPLETE, // Generic result
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VC_AUDIO_MSG_TYPE_CONFIG, // Configure audio
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VC_AUDIO_MSG_TYPE_CONTROL, // Configure audio
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VC_AUDIO_MSG_TYPE_OPEN, // Configure audio
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VC_AUDIO_MSG_TYPE_CLOSE, // Configure audio
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VC_AUDIO_MSG_TYPE_START, // Configure audio
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VC_AUDIO_MSG_TYPE_STOP, // Configure audio
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VC_AUDIO_MSG_TYPE_WRITE, // Configure audio
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VC_AUDIO_MSG_TYPE_MAX
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};
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/* configure the audio */
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struct vc_audio_config {
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u32 channels;
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u32 samplerate;
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u32 bps;
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};
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struct vc_audio_control {
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u32 volume;
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u32 dest;
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};
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struct vc_audio_open {
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u32 dummy;
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};
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struct vc_audio_close {
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u32 dummy;
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};
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struct vc_audio_start {
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u32 dummy;
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};
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struct vc_audio_stop {
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u32 draining;
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};
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/* configure the write audio samples */
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struct vc_audio_write {
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u32 count; // in bytes
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u32 cookie1;
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u32 cookie2;
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s16 silence;
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s16 max_packet;
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};
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/* Generic result for a request (VC->HOST) */
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struct vc_audio_result {
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s32 success; // Success value
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};
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/* Generic result for a request (VC->HOST) */
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struct vc_audio_complete {
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s32 count; // Success value
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u32 cookie1;
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u32 cookie2;
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};
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/* Message header for all messages in HOST->VC direction */
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struct vc_audio_msg {
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s32 type; /* Message type (VC_AUDIO_MSG_TYPE) */
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union {
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struct vc_audio_config config;
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struct vc_audio_control control;
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struct vc_audio_open open;
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struct vc_audio_close close;
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struct vc_audio_start start;
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struct vc_audio_stop stop;
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struct vc_audio_write write;
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struct vc_audio_result result;
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struct vc_audio_complete complete;
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} u;
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};
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#endif /* _VC_AUDIO_DEFS_H_ */
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