release/src-rt-6.x.4708/linux/linux-2.6.36/sound/pci/ctxfi/ctsrc.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        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 */