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