LXR linux/sound/pci/ctxfi/ctamixer.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        ctamixer.h
   9 *
  10 * @Brief
  11 * This file contains the definition of the Audio Mixer
  12 * resource management object.
  13 *
  14 * @Author      Liu Chun
  15 * @Date        May 21 2008
  16 *
  17 */
  18
  19#ifndef CTAMIXER_H
  20#define CTAMIXER_H
  21
  22#include "ctresource.h"
  23#include <linux/spinlock.h>
  24#include <sound/core.h>
  25
  26/* Define the descriptor of a summation node resource */
  27struct sum {
  28        struct rsc rsc;         /* Basic resource info */
  29        unsigned char idx[8];
  30};
  31
  32/* Define sum resource request description info */
  33struct sum_desc {
  34        unsigned int msr;
  35};
  36
  37struct sum_mgr {
  38        struct rsc_mgr mgr;     /* Basic resource manager info */
  39        struct snd_card *card;  /* pointer to this card */
  40        spinlock_t mgr_lock;
  41
  42         /* request one sum resource */
  43        int (*get_sum)(struct sum_mgr *mgr,
  44                        const struct sum_desc *desc, struct sum **rsum);
  45        /* return one sum resource */
  46        int (*put_sum)(struct sum_mgr *mgr, struct sum *sum);
  47};
  48
  49/* Constructor and destructor of daio resource manager */
  50int sum_mgr_create(struct hw *hw, struct sum_mgr **rsum_mgr);
  51int sum_mgr_destroy(struct sum_mgr *sum_mgr);
  52
  53/* Define the descriptor of a amixer resource */
  54struct amixer_rsc_ops;
  55
  56struct amixer {
  57        struct rsc rsc;         /* Basic resource info */
  58        unsigned char idx[8];
  59        struct rsc *input;      /* pointer to a resource acting as source */
  60        struct sum *sum;        /* Put amixer output to this summation node */
  61        const struct amixer_rsc_ops *ops;       /* AMixer specific operations */
  62};
  63
  64struct amixer_rsc_ops {
  65        int (*set_input)(struct amixer *amixer, struct rsc *rsc);
  66        int (*set_scale)(struct amixer *amixer, unsigned int scale);
  67        int (*set_invalid_squash)(struct amixer *amixer, unsigned int iv);
  68        int (*set_sum)(struct amixer *amixer, struct sum *sum);
  69        int (*commit_write)(struct amixer *amixer);
  70        /* Only for interleaved recording */
  71        int (*commit_raw_write)(struct amixer *amixer);
  72        int (*setup)(struct amixer *amixer, struct rsc *input,
  73                        unsigned int scale, struct sum *sum);
  74        int (*get_scale)(struct amixer *amixer);
  75};
  76
  77/* Define amixer resource request description info */
  78struct amixer_desc {
  79        unsigned int msr;
  80};
  81
  82struct amixer_mgr {
  83        struct rsc_mgr mgr;     /* Basic resource manager info */
  84        struct snd_card *card;  /* pointer to this card */
  85        spinlock_t mgr_lock;
  86
  87         /* request one amixer resource */
  88        int (*get_amixer)(struct amixer_mgr *mgr,
  89                          const struct amixer_desc *desc,
  90                          struct amixer **ramixer);
  91        /* return one amixer resource */
  92        int (*put_amixer)(struct amixer_mgr *mgr, struct amixer *amixer);
  93};
  94
  95/* Constructor and destructor of amixer resource manager */
  96int amixer_mgr_create(struct hw *hw, struct amixer_mgr **ramixer_mgr);
  97int amixer_mgr_destroy(struct amixer_mgr *amixer_mgr);
  98
  99#endif /* CTAMIXER_H */
 100