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
  25 /* Define the descriptor of a summation node resource */
  26 struct sum {
  27         struct rsc rsc;         /* Basic resource info */
  28         unsigned char idx[8];
  29 };
  30
  31 /* Define sum resource request description info */
  32 struct sum_desc {
  33         unsigned int msr;
  34 };
  35
  36 struct sum_mgr {
  37         struct rsc_mgr mgr;     /* Basic resource manager info */
  38         spinlock_t mgr_lock;
  39
  40          /* request one sum resource */
  41         int (*get_sum)(struct sum_mgr *mgr,
  42                         const struct sum_desc *desc, struct sum **rsum);
  43         /* return one sum resource */
  44         int (*put_sum)(struct sum_mgr *mgr, struct sum *sum);
  45 };
  46
  47 /* Constructor and destructor of daio resource manager */
  48 int sum_mgr_create(void *hw, struct sum_mgr **rsum_mgr);
  49 int sum_mgr_destroy(struct sum_mgr *sum_mgr);
  50
  51 /* Define the descriptor of a amixer resource */
  52 struct amixer_rsc_ops;
  53
  54 struct amixer {
  55         struct rsc rsc;         /* Basic resource info */
  56         unsigned char idx[8];
  57         struct rsc *input;      /* pointer to a resource acting as source */
  58         struct sum *sum;        /* Put amixer output to this summation node */
  59         struct amixer_rsc_ops *ops;     /* AMixer specific operations */
  60 };
  61
  62 struct amixer_rsc_ops {
  63         int (*set_input)(struct amixer *amixer, struct rsc *rsc);
  64         int (*set_scale)(struct amixer *amixer, unsigned int scale);
  65         int (*set_invalid_squash)(struct amixer *amixer, unsigned int iv);
  66         int (*set_sum)(struct amixer *amixer, struct sum *sum);
  67         int (*commit_write)(struct amixer *amixer);
  68         /* Only for interleaved recording */
  69         int (*commit_raw_write)(struct amixer *amixer);
  70         int (*setup)(struct amixer *amixer, struct rsc *input,
  71                         unsigned int scale, struct sum *sum);
  72         int (*get_scale)(struct amixer *amixer);
  73 };
  74
  75 /* Define amixer resource request description info */
  76 struct amixer_desc {
  77         unsigned int msr;
  78 };
  79
  80 struct amixer_mgr {
  81         struct rsc_mgr mgr;     /* Basic resource manager info */
  82         spinlock_t mgr_lock;
  83
  84          /* request one amixer resource */
  85         int (*get_amixer)(struct amixer_mgr *mgr,
  86                           const struct amixer_desc *desc,
  87                           struct amixer **ramixer);
  88         /* return one amixer resource */
  89         int (*put_amixer)(struct amixer_mgr *mgr, struct amixer *amixer);
  90 };
  91
  92 /* Constructor and destructor of amixer resource manager */
  93 int amixer_mgr_create(void *hw, struct amixer_mgr **ramixer_mgr);
  94 int amixer_mgr_destroy(struct amixer_mgr *amixer_mgr);
  95
  96 #endif /* CTAMIXER_H */