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sound/pci/ctxfi/ctmixer.h 1.65 KB
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  /**
   * Copyright (C) 2008, Creative Technology Ltd. All Rights Reserved.
   *
   * This source file is released under GPL v2 license (no other versions).
   * See the COPYING file included in the main directory of this source
   * distribution for the license terms and conditions.
   *
   * @File	ctmixer.h
   *
   * @Brief
   * This file contains the definition of the mixer device functions.
   *
   * @Author	Liu Chun
   * @Date 	Mar 28 2008
   *
   */
  
  #ifndef CTMIXER_H
  #define CTMIXER_H
  
  #include "ctatc.h"
  #include "ctresource.h"
  
  #define INIT_VOL	0x1c00
  
  enum MIXER_PORT_T {
  	MIX_WAVE_FRONT,
  	MIX_WAVE_REAR,
  	MIX_WAVE_CENTLFE,
  	MIX_WAVE_SURROUND,
  	MIX_SPDIF_OUT,
  	MIX_PCMO_FRONT,
  	MIX_MIC_IN,
  	MIX_LINE_IN,
  	MIX_SPDIF_IN,
  	MIX_PCMI_FRONT,
  	MIX_PCMI_REAR,
  	MIX_PCMI_CENTLFE,
  	MIX_PCMI_SURROUND,
  
  	NUM_MIX_PORTS
  };
  
  /* alsa mixer descriptor */
  struct ct_mixer {
  	struct ct_atc *atc;
  
  	void **amixers;		/* amixer resources for volume control */
  	void **sums;		/* sum resources for signal collection */
  	unsigned int switch_state; /* A bit-map to indicate state of switches */
  
  	int (*get_output_ports)(struct ct_mixer *mixer, enum MIXER_PORT_T type,
  				  struct rsc **rleft, struct rsc **rright);
  
  	int (*set_input_left)(struct ct_mixer *mixer,
  			      enum MIXER_PORT_T type, struct rsc *rsc);
  	int (*set_input_right)(struct ct_mixer *mixer,
  			       enum MIXER_PORT_T type, struct rsc *rsc);
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  #ifdef CONFIG_PM
  	int (*resume)(struct ct_mixer *mixer);
  #endif
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  };
  
  int ct_alsa_mix_create(struct ct_atc *atc,
  		       enum CTALSADEVS device,
  		       const char *device_name);
  int ct_mixer_create(struct ct_atc *atc, struct ct_mixer **rmixer);
  int ct_mixer_destroy(struct ct_mixer *mixer);
  
  #endif /* CTMIXER_H */