source: GPL/trunk/alsa-kernel/pci/cs5530.c

Last change on this file was 772, checked in by David Azarewicz, 5 months ago

Merge in changes from 6.6-LTS branch.
Fixed additional 25+ problems.
File size: 5.8 KB
RevLine 
[679]1// SPDX-License-Identifier: GPL-2.0-or-later
2/*
3 * cs5530.c - Initialisation code for Cyrix/NatSemi VSA1 softaudio
4 *
5 * (C) Copyright 2007 Ash Willis <ashwillis@programmer.net>
6 * (C) Copyright 2003 Red Hat Inc <alan@lxorguk.ukuu.org.uk>
7 *
8 * This driver was ported (shamelessly ripped ;) from oss/kahlua.c but I did
9 * mess with it a bit. The chip seems to have to have trouble with full duplex
10 * mode. If we're recording in 8bit 8000kHz, say, and we then attempt to
11 * simultaneously play back audio at 16bit 44100kHz, the device actually plays
12 * back in the same format in which it is capturing. By forcing the chip to
13 * always play/capture in 16/44100, we can let alsa-lib convert the samples and
14 * that way we can hack up some full duplex audio.
15 *
16 * XpressAudio(tm) is used on the Cyrix MediaGX (now NatSemi Geode) systems.
17 * The older version (VSA1) provides fairly good soundblaster emulation
18 * although there are a couple of bugs: large DMA buffers break record,
19 * and the MPU event handling seems suspect. VSA2 allows the native driver
20 * to control the AC97 audio engine directly and requires a different driver.
21 *
22 * Thanks to National Semiconductor for providing the needed information
23 * on the XpressAudio(tm) internals.
24 *
25 * TO DO:
26 * Investigate whether we can portably support Cognac (5520) in the
27 * same manner.
28 */
29
30#ifdef TARGET_OS2
31#define KBUILD_MODNAME "cs5530"
32#endif
33
34#include <linux/delay.h>
35#include <linux/module.h>
36#include <linux/pci.h>
37#include <linux/slab.h>
38#include <sound/core.h>
39#include <sound/sb.h>
40#include <sound/initval.h>
41
42MODULE_AUTHOR("Ash Willis");
43MODULE_DESCRIPTION("CS5530 Audio");
44MODULE_LICENSE("GPL");
45
46static int index[SNDRV_CARDS] = SNDRV_DEFAULT_IDX;
47static char *id[SNDRV_CARDS] = SNDRV_DEFAULT_STR;
48static bool enable[SNDRV_CARDS] = SNDRV_DEFAULT_ENABLE_PNP;
49
50module_param_array(index, int, NULL, 0444);
51MODULE_PARM_DESC(index, "Index value for CS5530 Audio driver.");
52module_param_array(id, charp, NULL, 0444);
53MODULE_PARM_DESC(id, "ID string for CS5530 Audio driver.");
54module_param_array(enable, bool, NULL, 0444);
55MODULE_PARM_DESC(enable, "Enable CS5530 Audio driver.");
56
57struct snd_cs5530 {
58 struct snd_card *card;
59 struct pci_dev *pci;
60 struct snd_sb *sb;
61 unsigned long pci_base;
62};
63
64static const struct pci_device_id snd_cs5530_ids[] = {
65 {PCI_VENDOR_ID_CYRIX, PCI_DEVICE_ID_CYRIX_5530_AUDIO, PCI_ANY_ID,
66 PCI_ANY_ID, 0, 0},
67 {0,}
68};
69
70MODULE_DEVICE_TABLE(pci, snd_cs5530_ids);
71
72static u8 snd_cs5530_mixer_read(unsigned long io, u8 reg)
73{
74 outb(reg, io + 4);
75 udelay(20);
76 reg = inb(io + 5);
77 udelay(20);
78 return reg;
79}
80
81static int snd_cs5530_create(struct snd_card *card,
[717]82 struct pci_dev *pci)
[679]83{
[717]84 struct snd_cs5530 *chip = card->private_data;
[679]85 unsigned long sb_base;
86 u8 irq, dma8, dma16 = 0;
87 u16 map;
88 void __iomem *mem;
89 int err;
90
[717]91 err = pcim_enable_device(pci);
[679]92 if (err < 0)
93 return err;
94
95 chip->card = card;
96 chip->pci = pci;
97
[717]98 err = pcim_iomap_regions(pci, 1 << 0, "CS5530");
99 if (err < 0)
[679]100 return err;
101 chip->pci_base = pci_resource_start(pci, 0);
[717]102 mem = pcim_iomap_table(pci)[0];
[679]103 map = readw(mem + 0x18);
104
105 /* Map bits
106 0:1 * 0x20 + 0x200 = sb base
107 2 sb enable
108 3 adlib enable
109 5 MPU enable 0x330
110 6 MPU enable 0x300
111
112 The other bits may be used internally so must be masked */
113
114 sb_base = 0x220 + 0x20 * (map & 3);
115
116 if (map & (1<<2))
117 dev_info(card->dev, "XpressAudio at 0x%lx\n", sb_base);
118 else {
119 dev_err(card->dev, "Could not find XpressAudio!\n");
120 return -ENODEV;
121 }
122
123 if (map & (1<<5))
124 dev_info(card->dev, "MPU at 0x300\n");
125 else if (map & (1<<6))
126 dev_info(card->dev, "MPU at 0x330\n");
127
128 irq = snd_cs5530_mixer_read(sb_base, 0x80) & 0x0F;
129 dma8 = snd_cs5530_mixer_read(sb_base, 0x81);
130
131 if (dma8 & 0x20)
132 dma16 = 5;
133 else if (dma8 & 0x40)
134 dma16 = 6;
135 else if (dma8 & 0x80)
136 dma16 = 7;
137 else {
138 dev_err(card->dev, "No 16bit DMA enabled\n");
139 return -ENODEV;
140 }
141
142 if (dma8 & 0x01)
143 dma8 = 0;
144 else if (dma8 & 02)
145 dma8 = 1;
146 else if (dma8 & 0x08)
147 dma8 = 3;
148 else {
149 dev_err(card->dev, "No 8bit DMA enabled\n");
150 return -ENODEV;
151 }
152
153 if (irq & 1)
154 irq = 9;
155 else if (irq & 2)
156 irq = 5;
157 else if (irq & 4)
158 irq = 7;
159 else if (irq & 8)
160 irq = 10;
161 else {
162 dev_err(card->dev, "SoundBlaster IRQ not set\n");
163 return -ENODEV;
164 }
165
166 dev_info(card->dev, "IRQ: %d DMA8: %d DMA16: %d\n", irq, dma8, dma16);
167
168 err = snd_sbdsp_create(card, sb_base, irq, snd_sb16dsp_interrupt, dma8,
169 dma16, SB_HW_CS5530, &chip->sb);
170 if (err < 0) {
171 dev_err(card->dev, "Could not create SoundBlaster\n");
172 return err;
173 }
174
175 err = snd_sb16dsp_pcm(chip->sb, 0);
176 if (err < 0) {
177 dev_err(card->dev, "Could not create PCM\n");
178 return err;
179 }
180
181 err = snd_sbmixer_new(chip->sb);
182 if (err < 0) {
183 dev_err(card->dev, "Could not create Mixer\n");
184 return err;
185 }
186
187 return 0;
188}
189
190static int snd_cs5530_probe(struct pci_dev *pci,
191 const struct pci_device_id *pci_id)
192{
193 static int dev;
194 struct snd_card *card;
[717]195 struct snd_cs5530 *chip;
[679]196 int err;
197
198 if (dev >= SNDRV_CARDS)
199 return -ENODEV;
200 if (!enable[dev]) {
201 dev++;
202 return -ENOENT;
203 }
204
[717]205 err = snd_devm_card_new(&pci->dev, index[dev], id[dev], THIS_MODULE,
206 sizeof(*chip), &card);
[679]207 if (err < 0)
208 return err;
[717]209 chip = card->private_data;
[679]210
[717]211 err = snd_cs5530_create(card, pci);
212 if (err < 0)
[679]213 return err;
214
215 strcpy(card->driver, "CS5530");
216 strcpy(card->shortname, "CS5530 Audio");
217 sprintf(card->longname, "%s at 0x%lx", card->shortname, chip->pci_base);
218
219 err = snd_card_register(card);
[717]220 if (err < 0)
[679]221 return err;
222 pci_set_drvdata(pci, card);
223 dev++;
224 return 0;
225}
226
227static struct pci_driver cs5530_driver = {
228 .name = KBUILD_MODNAME,
229 .id_table = snd_cs5530_ids,
230 .probe = snd_cs5530_probe,
231};
232
233module_pci_driver(cs5530_driver);
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