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 */
97
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