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