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 ctsrc.h
9 *
10 * @Brief
11 * This file contains the definition of the Sample Rate Convertor
12 * resource management object.
13 *
14 * @Author Liu Chun
15 * @Date May 13 2008
16 *
17 */
18
19 #ifndef CTSRC_H
20 #define CTSRC_H
21
22 #include "ctresource.h"
23 #include "ctimap.h"
24 #include <linux/spinlock.h>
25 #include <linux/list.h>
26
27 #define SRC_STATE_OFF 0x0
28 #define SRC_STATE_INIT 0x4
29 #define SRC_STATE_RUN 0x5
30
31 #define SRC_SF_U8 0x0
32 #define SRC_SF_S16 0x1
33 #define SRC_SF_S24 0x2
34 #define SRC_SF_S32 0x3
35 #define SRC_SF_F32 0x4
36
37 /* Define the descriptor of a src resource */
38 enum SRCMODE {
39 MEMRD, /* Read data from host memory */
40 MEMWR, /* Write data to host memory */
41 ARCRW, /* Read from and write to audio ring channel */
42 NUM_SRCMODES
43 };
44
45 struct src_rsc_ops;
46
47 struct src {
48 struct rsc rsc; /* Basic resource info */
49 struct src *intlv; /* Pointer to next interleaved SRC in a series */
50 struct src_rsc_ops *ops; /* SRC specific operations */
51 /* Number of contiguous srcs for interleaved usage */
52 unsigned char multi;
53 unsigned char mode; /* Working mode of this SRC resource */
54 };
55
56 struct src_rsc_ops {
57 int (*set_state)(struct src *src, unsigned int state);
58 int (*set_bm)(struct src *src, unsigned int bm);
59 int (*set_sf)(struct src *src, unsigned int sf);
60 int (*set_pm)(struct src *src, unsigned int pm);
61 int (*set_rom)(struct src *src, unsigned int rom);
62 int (*set_vo)(struct src *src, unsigned int vo);
63 int (*set_st)(struct src *src, unsigned int st);
64 int (*set_bp)(struct src *src, unsigned int bp);
65 int (*set_cisz)(struct src *src, unsigned int cisz);
66 int (*set_ca)(struct src *src, unsigned int ca);
67 int (*set_sa)(struct src *src, unsigned int sa);
68 int (*set_la)(struct src *src, unsigned int la);
69 int (*set_pitch)(struct src *src, unsigned int pitch);
70 int (*set_clr_zbufs)(struct src *src);
71 int (*commit_write)(struct src *src);
72 int (*get_ca)(struct src *src);
73 int (*init)(struct src *src);
74 struct src* (*next_interleave)(struct src *src);
75 };
76
77 /* Define src resource request description info */
78 struct src_desc {
79 /* Number of contiguous master srcs for interleaved usage */
80 unsigned char multi;
81 unsigned char msr;
82 unsigned char mode; /* Working mode of the requested srcs */
83 };
84
85 /* Define src manager object */
86 struct src_mgr {
87 struct rsc_mgr mgr; /* Basic resource manager info */
88 spinlock_t mgr_lock;
89
90 /* request src resource */
91 int (*get_src)(struct src_mgr *mgr,
92 const struct src_desc *desc, struct src **rsrc);
93 /* return src resource */
94 int (*put_src)(struct src_mgr *mgr, struct src *src);
95 int (*src_enable_s)(struct src_mgr *mgr, struct src *src);
96 int (*src_enable)(struct src_mgr *mgr, struct src *src);
97 int (*src_disable)(struct src_mgr *mgr, struct src *src);
98 int (*commit_write)(struct src_mgr *mgr);
99 };
100
101 /* Define the descriptor of a SRC Input Mapper resource */
102 struct srcimp_mgr;
103 struct srcimp_rsc_ops;
104
105 struct srcimp {
106 struct rsc rsc;
107 unsigned char idx[8];
108 struct imapper *imappers;
109 unsigned int mapped; /* A bit-map indicating which conj rsc is mapped */
110 struct srcimp_mgr *mgr;
111 struct srcimp_rsc_ops *ops;
112 };
113
114 struct srcimp_rsc_ops {
115 int (*map)(struct srcimp *srcimp, struct src *user, struct rsc *input);
116 int (*unmap)(struct srcimp *srcimp);
117 };
118
119 /* Define SRCIMP resource request description info */
120 struct srcimp_desc {
121 unsigned int msr;
122 };
123
124 struct srcimp_mgr {
125 struct rsc_mgr mgr; /* Basic resource manager info */
126 spinlock_t mgr_lock;
127 spinlock_t imap_lock;
128 struct list_head imappers;
129 struct imapper *init_imap;
130 unsigned int init_imap_added;
131
132 /* request srcimp resource */
133 int (*get_srcimp)(struct srcimp_mgr *mgr,
134 const struct srcimp_desc *desc,
135 struct srcimp **rsrcimp);
136 /* return srcimp resource */
137 int (*put_srcimp)(struct srcimp_mgr *mgr, struct srcimp *srcimp);
138 int (*imap_add)(struct srcimp_mgr *mgr, struct imapper *entry);
139 int (*imap_delete)(struct srcimp_mgr *mgr, struct imapper *entry);
140 };
141
142 /* Constructor and destructor of SRC resource manager */
143 int src_mgr_create(void *hw, struct src_mgr **rsrc_mgr);
144 int src_mgr_destroy(struct src_mgr *src_mgr);
145 /* Constructor and destructor of SRCIMP resource manager */
146 int srcimp_mgr_create(void *hw, struct srcimp_mgr **rsrc_mgr);
147 int srcimp_mgr_destroy(struct srcimp_mgr *srcimp_mgr);
148
149 #endif /* CTSRC_H */
150
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