PM / yenta: Split resume into early and late parts (rev. 4)
[linux/fpc-iii.git] / sound / pci / cs5530.c
blobdc464321d0f3ebda294e8e45de1db429122f4bc7
1 /*
2 * cs5530.c - Initialisation code for Cyrix/NatSemi VSA1 softaudio
4 * (C) Copyright 2007 Ash Willis <ashwillis@programmer.net>
5 * (C) Copyright 2003 Red Hat Inc <alan@lxorguk.ukuu.org.uk>
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.
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.
21 * Thanks to National Semiconductor for providing the needed information
22 * on the XpressAudio(tm) internals.
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.
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.
34 * TO DO:
35 * Investigate whether we can portably support Cognac (5520) in the
36 * same manner.
39 #include <linux/delay.h>
40 #include <linux/moduleparam.h>
41 #include <linux/pci.h>
42 #include <sound/core.h>
43 #include <sound/sb.h>
44 #include <sound/initval.h>
46 MODULE_AUTHOR("Ash Willis");
47 MODULE_DESCRIPTION("CS5530 Audio");
48 MODULE_LICENSE("GPL");
50 static int index[SNDRV_CARDS] = SNDRV_DEFAULT_IDX;
51 static char *id[SNDRV_CARDS] = SNDRV_DEFAULT_STR;
52 static int enable[SNDRV_CARDS] = SNDRV_DEFAULT_ENABLE_PNP;
54 struct snd_cs5530 {
55 struct snd_card *card;
56 struct pci_dev *pci;
57 struct snd_sb *sb;
58 unsigned long pci_base;
61 static struct pci_device_id snd_cs5530_ids[] = {
62 {PCI_VENDOR_ID_CYRIX, PCI_DEVICE_ID_CYRIX_5530_AUDIO, PCI_ANY_ID,
63 PCI_ANY_ID, 0, 0},
64 {0,}
67 MODULE_DEVICE_TABLE(pci, snd_cs5530_ids);
69 static int snd_cs5530_free(struct snd_cs5530 *chip)
71 pci_release_regions(chip->pci);
72 pci_disable_device(chip->pci);
73 kfree(chip);
74 return 0;
77 static int snd_cs5530_dev_free(struct snd_device *device)
79 struct snd_cs5530 *chip = device->device_data;
80 return snd_cs5530_free(chip);
83 static void __devexit snd_cs5530_remove(struct pci_dev *pci)
85 snd_card_free(pci_get_drvdata(pci));
86 pci_set_drvdata(pci, NULL);
89 static u8 __devinit snd_cs5530_mixer_read(unsigned long io, u8 reg)
91 outb(reg, io + 4);
92 udelay(20);
93 reg = inb(io + 5);
94 udelay(20);
95 return reg;
98 static int __devinit snd_cs5530_create(struct snd_card *card,
99 struct pci_dev *pci,
100 struct snd_cs5530 **rchip)
102 struct snd_cs5530 *chip;
103 unsigned long sb_base;
104 u8 irq, dma8, dma16 = 0;
105 u16 map;
106 void __iomem *mem;
107 int err;
109 static struct snd_device_ops ops = {
110 .dev_free = snd_cs5530_dev_free,
112 *rchip = NULL;
114 err = pci_enable_device(pci);
115 if (err < 0)
116 return err;
118 chip = kzalloc(sizeof(*chip), GFP_KERNEL);
119 if (chip == NULL) {
120 pci_disable_device(pci);
121 return -ENOMEM;
124 chip->card = card;
125 chip->pci = pci;
127 err = pci_request_regions(pci, "CS5530");
128 if (err < 0) {
129 kfree(chip);
130 pci_disable_device(pci);
131 return err;
133 chip->pci_base = pci_resource_start(pci, 0);
135 mem = pci_ioremap_bar(pci, 0);
136 if (mem == NULL) {
137 kfree(chip);
138 pci_disable_device(pci);
139 return -EBUSY;
142 map = readw(mem + 0x18);
143 iounmap(mem);
145 /* Map bits
146 0:1 * 0x20 + 0x200 = sb base
147 2 sb enable
148 3 adlib enable
149 5 MPU enable 0x330
150 6 MPU enable 0x300
152 The other bits may be used internally so must be masked */
154 sb_base = 0x220 + 0x20 * (map & 3);
156 if (map & (1<<2))
157 printk(KERN_INFO "CS5530: XpressAudio at 0x%lx\n", sb_base);
158 else {
159 printk(KERN_ERR "Could not find XpressAudio!\n");
160 snd_cs5530_free(chip);
161 return -ENODEV;
164 if (map & (1<<5))
165 printk(KERN_INFO "CS5530: MPU at 0x300\n");
166 else if (map & (1<<6))
167 printk(KERN_INFO "CS5530: MPU at 0x330\n");
169 irq = snd_cs5530_mixer_read(sb_base, 0x80) & 0x0F;
170 dma8 = snd_cs5530_mixer_read(sb_base, 0x81);
172 if (dma8 & 0x20)
173 dma16 = 5;
174 else if (dma8 & 0x40)
175 dma16 = 6;
176 else if (dma8 & 0x80)
177 dma16 = 7;
178 else {
179 printk(KERN_ERR "CS5530: No 16bit DMA enabled\n");
180 snd_cs5530_free(chip);
181 return -ENODEV;
184 if (dma8 & 0x01)
185 dma8 = 0;
186 else if (dma8 & 02)
187 dma8 = 1;
188 else if (dma8 & 0x08)
189 dma8 = 3;
190 else {
191 printk(KERN_ERR "CS5530: No 8bit DMA enabled\n");
192 snd_cs5530_free(chip);
193 return -ENODEV;
196 if (irq & 1)
197 irq = 9;
198 else if (irq & 2)
199 irq = 5;
200 else if (irq & 4)
201 irq = 7;
202 else if (irq & 8)
203 irq = 10;
204 else {
205 printk(KERN_ERR "CS5530: SoundBlaster IRQ not set\n");
206 snd_cs5530_free(chip);
207 return -ENODEV;
210 printk(KERN_INFO "CS5530: IRQ: %d DMA8: %d DMA16: %d\n", irq, dma8,
211 dma16);
213 err = snd_sbdsp_create(card, sb_base, irq, snd_sb16dsp_interrupt, dma8,
214 dma16, SB_HW_CS5530, &chip->sb);
215 if (err < 0) {
216 printk(KERN_ERR "CS5530: Could not create SoundBlaster\n");
217 snd_cs5530_free(chip);
218 return err;
221 err = snd_sb16dsp_pcm(chip->sb, 0, &chip->sb->pcm);
222 if (err < 0) {
223 printk(KERN_ERR "CS5530: Could not create PCM\n");
224 snd_cs5530_free(chip);
225 return err;
228 err = snd_sbmixer_new(chip->sb);
229 if (err < 0) {
230 printk(KERN_ERR "CS5530: Could not create Mixer\n");
231 snd_cs5530_free(chip);
232 return err;
235 err = snd_device_new(card, SNDRV_DEV_LOWLEVEL, chip, &ops);
236 if (err < 0) {
237 snd_cs5530_free(chip);
238 return err;
241 snd_card_set_dev(card, &pci->dev);
242 *rchip = chip;
243 return 0;
246 static int __devinit snd_cs5530_probe(struct pci_dev *pci,
247 const struct pci_device_id *pci_id)
249 static int dev;
250 struct snd_card *card;
251 struct snd_cs5530 *chip = NULL;
252 int err;
254 if (dev >= SNDRV_CARDS)
255 return -ENODEV;
256 if (!enable[dev]) {
257 dev++;
258 return -ENOENT;
261 err = snd_card_create(index[dev], id[dev], THIS_MODULE, 0, &card);
263 if (err < 0)
264 return err;
266 err = snd_cs5530_create(card, pci, &chip);
267 if (err < 0) {
268 snd_card_free(card);
269 return err;
272 strcpy(card->driver, "CS5530");
273 strcpy(card->shortname, "CS5530 Audio");
274 sprintf(card->longname, "%s at 0x%lx", card->shortname, chip->pci_base);
276 err = snd_card_register(card);
277 if (err < 0) {
278 snd_card_free(card);
279 return err;
281 pci_set_drvdata(pci, card);
282 dev++;
283 return 0;
286 static struct pci_driver driver = {
287 .name = "CS5530_Audio",
288 .id_table = snd_cs5530_ids,
289 .probe = snd_cs5530_probe,
290 .remove = __devexit_p(snd_cs5530_remove),
293 static int __init alsa_card_cs5530_init(void)
295 return pci_register_driver(&driver);
298 static void __exit alsa_card_cs5530_exit(void)
300 pci_unregister_driver(&driver);
303 module_init(alsa_card_cs5530_init)
304 module_exit(alsa_card_cs5530_exit)