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Takashi Iwai621887a2007-05-24 18:46:54 +02001/*
2 * cs5530.c - Initialisation code for Cyrix/NatSemi VSA1 softaudio
3 *
4 * (C) Copyright 2007 Ash Willis <ashwillis@programmer.net>
Alan Cox2f1e5932008-10-27 15:21:19 +00005 * (C) Copyright 2003 Red Hat Inc <alan@lxorguk.ukuu.org.uk>
Takashi Iwai621887a2007-05-24 18:46:54 +02006 *
7 * This driver was ported (shamelessly ripped ;) from oss/kahlua.c but I did
8 * mess with it a bit. The chip seems to have to have trouble with full duplex
9 * mode. If we're recording in 8bit 8000kHz, say, and we then attempt to
10 * simultaneously play back audio at 16bit 44100kHz, the device actually plays
11 * back in the same format in which it is capturing. By forcing the chip to
12 * always play/capture in 16/44100, we can let alsa-lib convert the samples and
13 * that way we can hack up some full duplex audio.
14 *
15 * XpressAudio(tm) is used on the Cyrix MediaGX (now NatSemi Geode) systems.
16 * The older version (VSA1) provides fairly good soundblaster emulation
17 * although there are a couple of bugs: large DMA buffers break record,
18 * and the MPU event handling seems suspect. VSA2 allows the native driver
19 * to control the AC97 audio engine directly and requires a different driver.
20 *
21 * Thanks to National Semiconductor for providing the needed information
22 * on the XpressAudio(tm) internals.
23 *
24 * This program is free software; you can redistribute it and/or modify it
25 * under the terms of the GNU General Public License as published by the
26 * Free Software Foundation; either version 2, or (at your option) any
27 * later version.
28 *
29 * This program is distributed in the hope that it will be useful, but
30 * WITHOUT ANY WARRANTY; without even the implied warranty of
31 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
32 * General Public License for more details.
33 *
34 * TO DO:
35 * Investigate whether we can portably support Cognac (5520) in the
36 * same manner.
37 */
38
Takashi Iwai621887a2007-05-24 18:46:54 +020039#include <linux/delay.h>
Paul Gortmaker65a77212011-07-15 13:13:37 -040040#include <linux/module.h>
Takashi Iwai621887a2007-05-24 18:46:54 +020041#include <linux/pci.h>
Tejun Heo5a0e3ad2010-03-24 17:04:11 +090042#include <linux/slab.h>
Takashi Iwai621887a2007-05-24 18:46:54 +020043#include <sound/core.h>
44#include <sound/sb.h>
45#include <sound/initval.h>
46
47MODULE_AUTHOR("Ash Willis");
48MODULE_DESCRIPTION("CS5530 Audio");
49MODULE_LICENSE("GPL");
50
51static int index[SNDRV_CARDS] = SNDRV_DEFAULT_IDX;
52static char *id[SNDRV_CARDS] = SNDRV_DEFAULT_STR;
Takashi Iwaicde94482011-12-19 10:32:48 +010053static bool enable[SNDRV_CARDS] = SNDRV_DEFAULT_ENABLE_PNP;
54
55module_param_array(index, int, NULL, 0444);
56MODULE_PARM_DESC(index, "Index value for CS5530 Audio driver.");
57module_param_array(id, charp, NULL, 0444);
58MODULE_PARM_DESC(id, "ID string for CS5530 Audio driver.");
59module_param_array(enable, bool, NULL, 0444);
60MODULE_PARM_DESC(enable, "Enable CS5530 Audio driver.");
Takashi Iwai621887a2007-05-24 18:46:54 +020061
62struct snd_cs5530 {
63 struct snd_card *card;
64 struct pci_dev *pci;
65 struct snd_sb *sb;
66 unsigned long pci_base;
67};
68
Alexey Dobriyancebe41d2010-02-06 00:21:03 +020069static DEFINE_PCI_DEVICE_TABLE(snd_cs5530_ids) = {
Takashi Iwai621887a2007-05-24 18:46:54 +020070 {PCI_VENDOR_ID_CYRIX, PCI_DEVICE_ID_CYRIX_5530_AUDIO, PCI_ANY_ID,
71 PCI_ANY_ID, 0, 0},
72 {0,}
73};
74
75MODULE_DEVICE_TABLE(pci, snd_cs5530_ids);
76
77static int snd_cs5530_free(struct snd_cs5530 *chip)
78{
79 pci_release_regions(chip->pci);
80 pci_disable_device(chip->pci);
81 kfree(chip);
82 return 0;
83}
84
85static int snd_cs5530_dev_free(struct snd_device *device)
86{
87 struct snd_cs5530 *chip = device->device_data;
88 return snd_cs5530_free(chip);
89}
90
Bill Pembertone23e7a12012-12-06 12:35:10 -050091static void snd_cs5530_remove(struct pci_dev *pci)
Takashi Iwai621887a2007-05-24 18:46:54 +020092{
93 snd_card_free(pci_get_drvdata(pci));
94 pci_set_drvdata(pci, NULL);
95}
96
Bill Pembertone23e7a12012-12-06 12:35:10 -050097static u8 snd_cs5530_mixer_read(unsigned long io, u8 reg)
Takashi Iwai621887a2007-05-24 18:46:54 +020098{
99 outb(reg, io + 4);
100 udelay(20);
101 reg = inb(io + 5);
102 udelay(20);
103 return reg;
104}
105
Bill Pembertone23e7a12012-12-06 12:35:10 -0500106static int snd_cs5530_create(struct snd_card *card,
107 struct pci_dev *pci,
108 struct snd_cs5530 **rchip)
Takashi Iwai621887a2007-05-24 18:46:54 +0200109{
110 struct snd_cs5530 *chip;
111 unsigned long sb_base;
112 u8 irq, dma8, dma16 = 0;
113 u16 map;
114 void __iomem *mem;
115 int err;
116
117 static struct snd_device_ops ops = {
118 .dev_free = snd_cs5530_dev_free,
119 };
120 *rchip = NULL;
121
122 err = pci_enable_device(pci);
123 if (err < 0)
124 return err;
125
126 chip = kzalloc(sizeof(*chip), GFP_KERNEL);
127 if (chip == NULL) {
128 pci_disable_device(pci);
129 return -ENOMEM;
130 }
131
132 chip->card = card;
133 chip->pci = pci;
134
135 err = pci_request_regions(pci, "CS5530");
136 if (err < 0) {
137 kfree(chip);
138 pci_disable_device(pci);
139 return err;
140 }
141 chip->pci_base = pci_resource_start(pci, 0);
142
Arjan van de Ven2f5ad542008-09-28 16:20:09 -0700143 mem = pci_ioremap_bar(pci, 0);
Takashi Iwai621887a2007-05-24 18:46:54 +0200144 if (mem == NULL) {
Takashi Iwai5a798392012-08-30 13:21:00 -0700145 snd_cs5530_free(chip);
Takashi Iwai621887a2007-05-24 18:46:54 +0200146 return -EBUSY;
147 }
148
149 map = readw(mem + 0x18);
150 iounmap(mem);
151
152 /* Map bits
153 0:1 * 0x20 + 0x200 = sb base
154 2 sb enable
155 3 adlib enable
156 5 MPU enable 0x330
157 6 MPU enable 0x300
158
159 The other bits may be used internally so must be masked */
160
161 sb_base = 0x220 + 0x20 * (map & 3);
162
163 if (map & (1<<2))
164 printk(KERN_INFO "CS5530: XpressAudio at 0x%lx\n", sb_base);
165 else {
166 printk(KERN_ERR "Could not find XpressAudio!\n");
167 snd_cs5530_free(chip);
168 return -ENODEV;
169 }
170
171 if (map & (1<<5))
172 printk(KERN_INFO "CS5530: MPU at 0x300\n");
173 else if (map & (1<<6))
174 printk(KERN_INFO "CS5530: MPU at 0x330\n");
175
176 irq = snd_cs5530_mixer_read(sb_base, 0x80) & 0x0F;
177 dma8 = snd_cs5530_mixer_read(sb_base, 0x81);
178
179 if (dma8 & 0x20)
180 dma16 = 5;
181 else if (dma8 & 0x40)
182 dma16 = 6;
183 else if (dma8 & 0x80)
184 dma16 = 7;
185 else {
186 printk(KERN_ERR "CS5530: No 16bit DMA enabled\n");
187 snd_cs5530_free(chip);
188 return -ENODEV;
189 }
190
191 if (dma8 & 0x01)
192 dma8 = 0;
193 else if (dma8 & 02)
194 dma8 = 1;
195 else if (dma8 & 0x08)
196 dma8 = 3;
197 else {
198 printk(KERN_ERR "CS5530: No 8bit DMA enabled\n");
199 snd_cs5530_free(chip);
200 return -ENODEV;
201 }
202
203 if (irq & 1)
204 irq = 9;
205 else if (irq & 2)
206 irq = 5;
207 else if (irq & 4)
208 irq = 7;
209 else if (irq & 8)
210 irq = 10;
211 else {
212 printk(KERN_ERR "CS5530: SoundBlaster IRQ not set\n");
213 snd_cs5530_free(chip);
214 return -ENODEV;
215 }
216
217 printk(KERN_INFO "CS5530: IRQ: %d DMA8: %d DMA16: %d\n", irq, dma8,
218 dma16);
219
220 err = snd_sbdsp_create(card, sb_base, irq, snd_sb16dsp_interrupt, dma8,
221 dma16, SB_HW_CS5530, &chip->sb);
222 if (err < 0) {
223 printk(KERN_ERR "CS5530: Could not create SoundBlaster\n");
224 snd_cs5530_free(chip);
225 return err;
226 }
227
228 err = snd_sb16dsp_pcm(chip->sb, 0, &chip->sb->pcm);
229 if (err < 0) {
230 printk(KERN_ERR "CS5530: Could not create PCM\n");
231 snd_cs5530_free(chip);
232 return err;
233 }
234
235 err = snd_sbmixer_new(chip->sb);
236 if (err < 0) {
237 printk(KERN_ERR "CS5530: Could not create Mixer\n");
238 snd_cs5530_free(chip);
239 return err;
240 }
241
242 err = snd_device_new(card, SNDRV_DEV_LOWLEVEL, chip, &ops);
243 if (err < 0) {
244 snd_cs5530_free(chip);
245 return err;
246 }
247
248 snd_card_set_dev(card, &pci->dev);
249 *rchip = chip;
250 return 0;
251}
252
Bill Pembertone23e7a12012-12-06 12:35:10 -0500253static int snd_cs5530_probe(struct pci_dev *pci,
254 const struct pci_device_id *pci_id)
Takashi Iwai621887a2007-05-24 18:46:54 +0200255{
256 static int dev;
257 struct snd_card *card;
258 struct snd_cs5530 *chip = NULL;
259 int err;
260
261 if (dev >= SNDRV_CARDS)
262 return -ENODEV;
263 if (!enable[dev]) {
264 dev++;
265 return -ENOENT;
266 }
267
Takashi Iwaie58de7b2008-12-28 16:44:30 +0100268 err = snd_card_create(index[dev], id[dev], THIS_MODULE, 0, &card);
Takashi Iwai621887a2007-05-24 18:46:54 +0200269
Takashi Iwaie58de7b2008-12-28 16:44:30 +0100270 if (err < 0)
271 return err;
Takashi Iwai621887a2007-05-24 18:46:54 +0200272
273 err = snd_cs5530_create(card, pci, &chip);
274 if (err < 0) {
275 snd_card_free(card);
276 return err;
277 }
278
279 strcpy(card->driver, "CS5530");
280 strcpy(card->shortname, "CS5530 Audio");
281 sprintf(card->longname, "%s at 0x%lx", card->shortname, chip->pci_base);
282
283 err = snd_card_register(card);
284 if (err < 0) {
285 snd_card_free(card);
286 return err;
287 }
288 pci_set_drvdata(pci, card);
289 dev++;
290 return 0;
291}
292
Takashi Iwaie9f66d92012-04-24 12:25:00 +0200293static struct pci_driver cs5530_driver = {
Takashi Iwai3733e422011-06-10 16:20:20 +0200294 .name = KBUILD_MODNAME,
Takashi Iwai621887a2007-05-24 18:46:54 +0200295 .id_table = snd_cs5530_ids,
296 .probe = snd_cs5530_probe,
Bill Pembertone23e7a12012-12-06 12:35:10 -0500297 .remove = snd_cs5530_remove,
Takashi Iwai621887a2007-05-24 18:46:54 +0200298};
299
Takashi Iwaie9f66d92012-04-24 12:25:00 +0200300module_pci_driver(cs5530_driver);