2 * Copyright (C) 2008, Creative Technology Ltd. All Rights Reserved.
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.
11 * This file contains the definition of the Sample Rate Convertor
12 * resource management object.
22 #include "ctresource.h"
24 #include <linux/spinlock.h>
25 #include <linux/list.h>
26 #include <sound/core.h>
28 #define SRC_STATE_OFF 0x0
29 #define SRC_STATE_INIT 0x4
30 #define SRC_STATE_RUN 0x5
33 #define SRC_SF_S16 0x1
34 #define SRC_SF_S24 0x2
35 #define SRC_SF_S32 0x3
36 #define SRC_SF_F32 0x4
38 /* Define the descriptor of a src resource */
40 MEMRD
, /* Read data from host memory */
41 MEMWR
, /* Write data to host memory */
42 ARCRW
, /* Read from and write to audio ring channel */
49 struct rsc rsc
; /* Basic resource info */
50 struct src
*intlv
; /* Pointer to next interleaved SRC in a series */
51 struct src_rsc_ops
*ops
; /* SRC specific operations */
52 /* Number of contiguous srcs for interleaved usage */
54 unsigned char mode
; /* Working mode of this SRC resource */
58 int (*set_state
)(struct src
*src
, unsigned int state
);
59 int (*set_bm
)(struct src
*src
, unsigned int bm
);
60 int (*set_sf
)(struct src
*src
, unsigned int sf
);
61 int (*set_pm
)(struct src
*src
, unsigned int pm
);
62 int (*set_rom
)(struct src
*src
, unsigned int rom
);
63 int (*set_vo
)(struct src
*src
, unsigned int vo
);
64 int (*set_st
)(struct src
*src
, unsigned int st
);
65 int (*set_bp
)(struct src
*src
, unsigned int bp
);
66 int (*set_cisz
)(struct src
*src
, unsigned int cisz
);
67 int (*set_ca
)(struct src
*src
, unsigned int ca
);
68 int (*set_sa
)(struct src
*src
, unsigned int sa
);
69 int (*set_la
)(struct src
*src
, unsigned int la
);
70 int (*set_pitch
)(struct src
*src
, unsigned int pitch
);
71 int (*set_clr_zbufs
)(struct src
*src
);
72 int (*commit_write
)(struct src
*src
);
73 int (*get_ca
)(struct src
*src
);
74 int (*init
)(struct src
*src
);
75 struct src
* (*next_interleave
)(struct src
*src
);
78 /* Define src resource request description info */
80 /* Number of contiguous master srcs for interleaved usage */
83 unsigned char mode
; /* Working mode of the requested srcs */
86 /* Define src manager object */
88 struct rsc_mgr mgr
; /* Basic resource manager info */
89 struct snd_card
*card
; /* pointer to this card */
92 /* request src resource */
93 int (*get_src
)(struct src_mgr
*mgr
,
94 const struct src_desc
*desc
, struct src
**rsrc
);
95 /* return src resource */
96 int (*put_src
)(struct src_mgr
*mgr
, struct src
*src
);
97 int (*src_enable_s
)(struct src_mgr
*mgr
, struct src
*src
);
98 int (*src_enable
)(struct src_mgr
*mgr
, struct src
*src
);
99 int (*src_disable
)(struct src_mgr
*mgr
, struct src
*src
);
100 int (*commit_write
)(struct src_mgr
*mgr
);
103 /* Define the descriptor of a SRC Input Mapper resource */
105 struct srcimp_rsc_ops
;
109 unsigned char idx
[8];
110 struct imapper
*imappers
;
111 unsigned int mapped
; /* A bit-map indicating which conj rsc is mapped */
112 struct srcimp_mgr
*mgr
;
113 struct srcimp_rsc_ops
*ops
;
116 struct srcimp_rsc_ops
{
117 int (*map
)(struct srcimp
*srcimp
, struct src
*user
, struct rsc
*input
);
118 int (*unmap
)(struct srcimp
*srcimp
);
121 /* Define SRCIMP resource request description info */
127 struct rsc_mgr mgr
; /* Basic resource manager info */
128 struct snd_card
*card
; /* pointer to this card */
130 spinlock_t imap_lock
;
131 struct list_head imappers
;
132 struct imapper
*init_imap
;
133 unsigned int init_imap_added
;
135 /* request srcimp resource */
136 int (*get_srcimp
)(struct srcimp_mgr
*mgr
,
137 const struct srcimp_desc
*desc
,
138 struct srcimp
**rsrcimp
);
139 /* return srcimp resource */
140 int (*put_srcimp
)(struct srcimp_mgr
*mgr
, struct srcimp
*srcimp
);
141 int (*imap_add
)(struct srcimp_mgr
*mgr
, struct imapper
*entry
);
142 int (*imap_delete
)(struct srcimp_mgr
*mgr
, struct imapper
*entry
);
145 /* Constructor and destructor of SRC resource manager */
146 int src_mgr_create(struct hw
*hw
, struct src_mgr
**rsrc_mgr
);
147 int src_mgr_destroy(struct src_mgr
*src_mgr
);
148 /* Constructor and destructor of SRCIMP resource manager */
149 int srcimp_mgr_create(struct hw
*hw
, struct srcimp_mgr
**rsrc_mgr
);
150 int srcimp_mgr_destroy(struct srcimp_mgr
*srcimp_mgr
);