sound/pci/ctxfi/ctmixer.h

   1 /**
   2  * Copyright (C) 2008, Creative Technology Ltd. All Rights Reserved.
   3  *
   4  * This source file is released under GPL v2 license (no other versions).
   5  * See the COPYING file included in the main directory of this source
   6  * distribution for the license terms and conditions.
   7  *
   8  * @File        ctmixer.h
   9  *
  10  * @Brief
  11  * This file contains the definition of the mixer device functions.
  12  *
  13  * @Author      Liu Chun
  14  * @Date        Mar 28 2008
  15  *
  16  */
  17
  18 #ifndef CTMIXER_H
  19 #define CTMIXER_H
  20
  21 #include "ctatc.h"
  22 #include "ctresource.h"
  23
  24 #define INIT_VOL        0x1c00
  25
  26 enum MIXER_PORT_T {
  27         MIX_WAVE_FRONT,
  28         MIX_WAVE_REAR,
  29         MIX_WAVE_CENTLFE,
  30         MIX_WAVE_SURROUND,
  31         MIX_SPDIF_OUT,
  32         MIX_PCMO_FRONT,
  33         MIX_MIC_IN,
  34         MIX_LINE_IN,
  35         MIX_SPDIF_IN,
  36         MIX_PCMI_FRONT,
  37         MIX_PCMI_REAR,
  38         MIX_PCMI_CENTLFE,
  39         MIX_PCMI_SURROUND,
  40
  41         NUM_MIX_PORTS
  42 };
  43
  44 /* alsa mixer descriptor */
  45 struct ct_mixer {
  46         struct ct_atc *atc;
  47
  48         void **amixers;         /* amixer resources for volume control */
  49         void **sums;            /* sum resources for signal collection */
  50         unsigned int switch_state; /* A bit-map to indicate state of switches */
  51
  52         int (*get_output_ports)(struct ct_mixer *mixer, enum MIXER_PORT_T type,
  53                                   struct rsc **rleft, struct rsc **rright);
  54
  55         int (*set_input_left)(struct ct_mixer *mixer,
  56                               enum MIXER_PORT_T type, struct rsc *rsc);
  57         int (*set_input_right)(struct ct_mixer *mixer,
  58                                enum MIXER_PORT_T type, struct rsc *rsc);
  59 #ifdef CONFIG_PM
  60         int (*resume)(struct ct_mixer *mixer);
  61 #endif
  62 };
  63
  64 int ct_alsa_mix_create(struct ct_atc *atc,
  65                        enum CTALSADEVS device,
  66                        const char *device_name);
  67 int ct_mixer_create(struct ct_atc *atc, struct ct_mixer **rmixer);
  68 int ct_mixer_destroy(struct ct_mixer *mixer);
  69
  70 #endif /* CTMIXER_H */