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 #include <sound/core.h> 27 28 #define SRC_STATE_OFF 0x0 29 #define SRC_STATE_INIT 0x4 30 #define SRC_STATE_RUN 0x5 31 32 #define SRC_SF_U8 0x0 33 #define SRC_SF_S16 0x1 34 #define SRC_SF_S24 0x2 35 #define SRC_SF_S32 0x3 36 #define SRC_SF_F32 0x4 37 38 /* Define the descriptor of a src resource */ 39 enum SRCMODE { 40 MEMRD, /* Read data from host memory */ 41 MEMWR, /* Write data to host memory */ 42 ARCRW, /* Read from and write to audio ring channel */ 43 NUM_SRCMODES 44 }; 45 46 struct src_rsc_ops; 47 48 struct src { 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 */ 53 unsigned char multi; 54 unsigned char mode; /* Working mode of this SRC resource */ 55 }; 56 57 struct src_rsc_ops { 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); 76 }; 77 78 /* Define src resource request description info */ 79 struct src_desc { 80 /* Number of contiguous master srcs for interleaved usage */ 81 unsigned char multi; 82 unsigned char msr; 83 unsigned char mode; /* Working mode of the requested srcs */ 84 }; 85 86 /* Define src manager object */ 87 struct src_mgr { 88 struct rsc_mgr mgr; /* Basic resource manager info */ 89 struct snd_card *card; /* pointer to this card */ 90 spinlock_t mgr_lock; 91 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); 101 }; 102 103 /* Define the descriptor of a SRC Input Mapper resource */ 104 struct srcimp_mgr; 105 struct srcimp_rsc_ops; 106 107 struct srcimp { 108 struct rsc rsc; 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; 114 }; 115 116 struct srcimp_rsc_ops { 117 int (*map)(struct srcimp *srcimp, struct src *user, struct rsc *input); 118 int (*unmap)(struct srcimp *srcimp); 119 }; 120 121 /* Define SRCIMP resource request description info */ 122 struct srcimp_desc { 123 unsigned int msr; 124 }; 125 126 struct srcimp_mgr { 127 struct rsc_mgr mgr; /* Basic resource manager info */ 128 struct snd_card *card; /* pointer to this card */ 129 spinlock_t mgr_lock; 130 spinlock_t imap_lock; 131 struct list_head imappers; 132 struct imapper *init_imap; 133 unsigned int init_imap_added; 134 135 /* 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); 143 }; 144 145 /* 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); 151 152 #endif /* CTSRC_H */ 153