LXR linux/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
  26enum 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 */
  45struct 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
  64int ct_alsa_mix_create(struct ct_atc *atc,
  65                       enum CTALSADEVS device,
  66                       const char *device_name);
  67int ct_mixer_create(struct ct_atc *atc, struct ct_mixer **rmixer);
  68int ct_mixer_destroy(struct ct_mixer *mixer);
  69
  70#endif /* CTMIXER_H */
  71