1/* 2 * Auvia BeOS Driver for Via VT82xx Southbridge audio 3 * 4 * Copyright (c) 2003, Jerome Duval (jerome.duval@free.fr) 5 * 6 * Original code : BeOS Driver for Intel ICH AC'97 Link interface 7 * Copyright (c) 2002, Marcus Overhagen <marcus@overhagen.de> 8 * 9 * All rights reserved. 10 * Redistribution and use in source and binary forms, with or without modification, 11 * are permitted provided that the following conditions are met: 12 * 13 * - Redistributions of source code must retain the above copyright notice, 14 * this list of conditions and the following disclaimer. 15 * - Redistributions in binary form must reproduce the above copyright notice, 16 * this list of conditions and the following disclaimer in the documentation 17 * and/or other materials provided with the distribution. 18 * 19 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND 20 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED 21 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE 22 * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR 23 * ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES 24 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS 25 * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 26 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING 27 * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, 28 * EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 29 * 30 */ 31#include <KernelExport.h> 32#include <OS.h> 33#include "io.h" 34#include "auviareg.h" 35#include "debug.h" 36#include <PCI.h> 37 38extern pci_module_info *pci; 39 40uint8 41auvia_reg_read_8(device_config *config, int regno) 42{ 43 return pci->read_io_8(config->nabmbar + regno); 44} 45 46uint16 47auvia_reg_read_16(device_config *config, int regno) 48{ 49 return pci->read_io_16(config->nabmbar + regno); 50} 51 52uint32 53auvia_reg_read_32(device_config *config, int regno) 54{ 55 return pci->read_io_32(config->nabmbar + regno); 56} 57 58void 59auvia_reg_write_8(device_config *config, int regno, uint8 value) 60{ 61 pci->write_io_8(config->nabmbar + regno, value); 62} 63 64void 65auvia_reg_write_16(device_config *config, int regno, uint16 value) 66{ 67 pci->write_io_16(config->nabmbar + regno, value); 68} 69 70void 71auvia_reg_write_32(device_config *config, int regno, uint32 value) 72{ 73 pci->write_io_32(config->nabmbar + regno, value); 74} 75 76/* codec */ 77 78#define AUVIA_TIMEOUT 200 79 80static int 81auvia_codec_waitready(device_config *config) 82{ 83 int i; 84 85 /* poll until codec not busy */ 86 for(i = 0; (i < AUVIA_TIMEOUT) && (pci->read_io_32(config->nabmbar 87 + AUVIA_CODEC_CTL) & AUVIA_CODEC_BUSY) ; i++) 88 spin(1); 89 if(i>=AUVIA_TIMEOUT) { 90 //PRINT(("codec busy\n")); 91 return B_ERROR; 92 } 93 return B_OK; 94} 95 96static int 97auvia_codec_waitvalid(device_config *config) 98{ 99 int i; 100 101 /* poll until codec valid */ 102 for(i = 0; (i < AUVIA_TIMEOUT) && !(pci->read_io_32(config->nabmbar 103 + AUVIA_CODEC_CTL) & AUVIA_CODEC_PRIVALID) ; i++) 104 spin(1); 105 if(i>=AUVIA_TIMEOUT) { 106 //PRINT(("codec invalid\n")); 107 return B_ERROR; 108 } 109 return B_OK; 110} 111 112uint16 113auvia_codec_read(device_config *config, int regno) 114{ 115 if(auvia_codec_waitready(config)!=B_OK) { 116 PRINT(("codec busy (1)\n")); 117 return -1; 118 } 119 pci->write_io_32(config->nabmbar + AUVIA_CODEC_CTL, 120 AUVIA_CODEC_PRIVALID | AUVIA_CODEC_READ | AUVIA_CODEC_INDEX(regno)); 121 122 if(auvia_codec_waitready(config)!=B_OK) { 123 PRINT(("codec busy (2)\n")); 124 return -1; 125 } 126 if(auvia_codec_waitvalid(config)!=B_OK) { 127 PRINT(("codec invalid (3)\n")); 128 return -1; 129 } 130 131 return pci->read_io_16(config->nabmbar + AUVIA_CODEC_CTL); 132} 133 134void 135auvia_codec_write(device_config *config, int regno, uint16 value) 136{ 137 if(auvia_codec_waitready(config)!=B_OK) { 138 PRINT(("codec busy (4)\n")); 139 return; 140 } 141 pci->write_io_32(config->nabmbar + AUVIA_CODEC_CTL, 142 AUVIA_CODEC_PRIVALID | AUVIA_CODEC_INDEX(regno) | value); 143} 144