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 */
  27 struct sum {
  28         struct rsc rsc;         /* Basic resource info */
  29         unsigned char idx[8];
  30 };
  31
  32 /* Define sum resource request description info */
  33 struct sum_desc {
  34         unsigned int msr;
  35 };
  36
  37 struct 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 */
  50 int sum_mgr_create(struct hw *hw, struct sum_mgr **rsum_mgr);
  51 int sum_mgr_destroy(struct sum_mgr *sum_mgr);
  52
  53 /* Define the descriptor of a amixer resource */
  54 struct amixer_rsc_ops;
  55
  56 struct 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
  64 struct 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 */
  78 struct amixer_desc {
  79         unsigned int msr;
  80 };
  81
  82 struct 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 */
  96 int amixer_mgr_create(struct hw *hw, struct amixer_mgr **ramixer_mgr);
  97 int amixer_mgr_destroy(struct amixer_mgr *amixer_mgr);
  98
  99 #endif /* CTAMIXER_H */