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awilliam
GitHub Repository: awilliam/linux-vfio
 Path: blob/master/sound/pci/ctxfi/ctmixer.h
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/**

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 * Copyright (C) 2008, Creative Technology Ltd. All Rights Reserved.

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 *

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 * This source file is released under GPL v2 license (no other versions).

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 * See the COPYING file included in the main directory of this source

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 * distribution for the license terms and conditions.

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 *

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 * @File	ctmixer.h

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 *

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 * @Brief

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 * This file contains the definition of the mixer device functions.

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 *

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 * @Author	Liu Chun

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 * @Date 	Mar 28 2008

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 *

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 */

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#ifndef CTMIXER_H

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#define CTMIXER_H

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#include "ctatc.h"

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#include "ctresource.h"

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#define INIT_VOL	0x1c00

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enum MIXER_PORT_T {

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	MIX_WAVE_FRONT,

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	MIX_WAVE_REAR,

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	MIX_WAVE_CENTLFE,

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	MIX_WAVE_SURROUND,

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	MIX_SPDIF_OUT,

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	MIX_PCMO_FRONT,

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	MIX_MIC_IN,

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	MIX_LINE_IN,

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	MIX_SPDIF_IN,

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	MIX_PCMI_FRONT,

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	MIX_PCMI_REAR,

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	MIX_PCMI_CENTLFE,

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	MIX_PCMI_SURROUND,

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	NUM_MIX_PORTS

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};

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/* alsa mixer descriptor */

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struct ct_mixer {

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	struct ct_atc *atc;

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	void **amixers;		/* amixer resources for volume control */

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	void **sums;		/* sum resources for signal collection */

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	unsigned int switch_state; /* A bit-map to indicate state of switches */

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	int (*get_output_ports)(struct ct_mixer *mixer, enum MIXER_PORT_T type,

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				  struct rsc **rleft, struct rsc **rright);

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	int (*set_input_left)(struct ct_mixer *mixer,

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			      enum MIXER_PORT_T type, struct rsc *rsc);

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	int (*set_input_right)(struct ct_mixer *mixer,

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			       enum MIXER_PORT_T type, struct rsc *rsc);

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#ifdef CONFIG_PM

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	int (*resume)(struct ct_mixer *mixer);

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#endif

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};

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int ct_alsa_mix_create(struct ct_atc *atc,

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		       enum CTALSADEVS device,

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		       const char *device_name);

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int ct_mixer_create(struct ct_atc *atc, struct ct_mixer **rmixer);

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int ct_mixer_destroy(struct ct_mixer *mixer);

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#endif /* CTMIXER_H */

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