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
  25/* Define the descriptor of a summation node resource */
  26struct sum {
  27        struct rsc rsc;         /* Basic resource info */
  28        unsigned char idx[8];
  29};
  30
  31/* Define sum resource request description info */
  32struct sum_desc {
  33        unsigned int msr;
  34};
  35
  36struct 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 */
  48int sum_mgr_create(void *hw, struct sum_mgr **rsum_mgr);
  49int sum_mgr_destroy(struct sum_mgr *sum_mgr);
  50
  51/* Define the descriptor of a amixer resource */
  52struct amixer_rsc_ops;
  53
  54struct 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
  62struct 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 */
  76struct amixer_desc {
  77        unsigned int msr;
  78};
  79
  80struct 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 */
  93int amixer_mgr_create(void *hw, struct amixer_mgr **ramixer_mgr);
  94int amixer_mgr_destroy(struct amixer_mgr *amixer_mgr);
  95
  96#endif /* CTAMIXER_H */
  97