root/sound/pci/ctxfi/ctamixer.h

INCLUDED FROM

   1 /* SPDX-License-Identifier: GPL-2.0-only */
   2 /**
   3  * Copyright (C) 2008, Creative Technology Ltd. All Rights Reserved.
   4  *
   5  * @File        ctamixer.h
   6  *
   7  * @Brief
   8  * This file contains the definition of the Audio Mixer
   9  * resource management object.
  10  *
  11  * @Author      Liu Chun
  12  * @Date        May 21 2008
  13  */
  14 
  15 #ifndef CTAMIXER_H
  16 #define CTAMIXER_H
  17 
  18 #include "ctresource.h"
  19 #include <linux/spinlock.h>
  20 #include <sound/core.h>
  21 
  22 /* Define the descriptor of a summation node resource */
  23 struct sum {
  24         struct rsc rsc;         /* Basic resource info */
  25         unsigned char idx[8];
  26 };
  27 
  28 /* Define sum resource request description info */
  29 struct sum_desc {
  30         unsigned int msr;
  31 };
  32 
  33 struct sum_mgr {
  34         struct rsc_mgr mgr;     /* Basic resource manager info */
  35         struct snd_card *card;  /* pointer to this card */
  36         spinlock_t mgr_lock;
  37 
  38          /* request one sum resource */
  39         int (*get_sum)(struct sum_mgr *mgr,
  40                         const struct sum_desc *desc, struct sum **rsum);
  41         /* return one sum resource */
  42         int (*put_sum)(struct sum_mgr *mgr, struct sum *sum);
  43 };
  44 
  45 /* Constructor and destructor of daio resource manager */
  46 int sum_mgr_create(struct hw *hw, struct sum_mgr **rsum_mgr);
  47 int sum_mgr_destroy(struct sum_mgr *sum_mgr);
  48 
  49 /* Define the descriptor of a amixer resource */
  50 struct amixer_rsc_ops;
  51 
  52 struct amixer {
  53         struct rsc rsc;         /* Basic resource info */
  54         unsigned char idx[8];
  55         struct rsc *input;      /* pointer to a resource acting as source */
  56         struct sum *sum;        /* Put amixer output to this summation node */
  57         const struct amixer_rsc_ops *ops;       /* AMixer specific operations */
  58 };
  59 
  60 struct amixer_rsc_ops {
  61         int (*set_input)(struct amixer *amixer, struct rsc *rsc);
  62         int (*set_scale)(struct amixer *amixer, unsigned int scale);
  63         int (*set_invalid_squash)(struct amixer *amixer, unsigned int iv);
  64         int (*set_sum)(struct amixer *amixer, struct sum *sum);
  65         int (*commit_write)(struct amixer *amixer);
  66         /* Only for interleaved recording */
  67         int (*commit_raw_write)(struct amixer *amixer);
  68         int (*setup)(struct amixer *amixer, struct rsc *input,
  69                         unsigned int scale, struct sum *sum);
  70         int (*get_scale)(struct amixer *amixer);
  71 };
  72 
  73 /* Define amixer resource request description info */
  74 struct amixer_desc {
  75         unsigned int msr;
  76 };
  77 
  78 struct amixer_mgr {
  79         struct rsc_mgr mgr;     /* Basic resource manager info */
  80         struct snd_card *card;  /* pointer to this card */
  81         spinlock_t mgr_lock;
  82 
  83          /* request one amixer resource */
  84         int (*get_amixer)(struct amixer_mgr *mgr,
  85                           const struct amixer_desc *desc,
  86                           struct amixer **ramixer);
  87         /* return one amixer resource */
  88         int (*put_amixer)(struct amixer_mgr *mgr, struct amixer *amixer);
  89 };
  90 
  91 /* Constructor and destructor of amixer resource manager */
  92 int amixer_mgr_create(struct hw *hw, struct amixer_mgr **ramixer_mgr);
  93 int amixer_mgr_destroy(struct amixer_mgr *amixer_mgr);
  94 
  95 #endif /* CTAMIXER_H */