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621887ae TI |
1 | /* |
2 | * cs5530.c - Initialisation code for Cyrix/NatSemi VSA1 softaudio | |
3 | * | |
4 | * (C) Copyright 2007 Ash Willis <ashwillis@programmer.net> | |
2f1e593d | 5 | * (C) Copyright 2003 Red Hat Inc <alan@lxorguk.ukuu.org.uk> |
621887ae TI |
6 | * |
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 | ||
621887ae | 39 | #include <linux/delay.h> |
65a77217 | 40 | #include <linux/module.h> |
621887ae | 41 | #include <linux/pci.h> |
5a0e3ad6 | 42 | #include <linux/slab.h> |
621887ae TI |
43 | #include <sound/core.h> |
44 | #include <sound/sb.h> | |
45 | #include <sound/initval.h> | |
46 | ||
47 | MODULE_AUTHOR("Ash Willis"); | |
48 | MODULE_DESCRIPTION("CS5530 Audio"); | |
49 | MODULE_LICENSE("GPL"); | |
50 | ||
51 | static int index[SNDRV_CARDS] = SNDRV_DEFAULT_IDX; | |
52 | static char *id[SNDRV_CARDS] = SNDRV_DEFAULT_STR; | |
cde94480 TI |
53 | static bool enable[SNDRV_CARDS] = SNDRV_DEFAULT_ENABLE_PNP; |
54 | ||
55 | module_param_array(index, int, NULL, 0444); | |
56 | MODULE_PARM_DESC(index, "Index value for CS5530 Audio driver."); | |
57 | module_param_array(id, charp, NULL, 0444); | |
58 | MODULE_PARM_DESC(id, "ID string for CS5530 Audio driver."); | |
59 | module_param_array(enable, bool, NULL, 0444); | |
60 | MODULE_PARM_DESC(enable, "Enable CS5530 Audio driver."); | |
621887ae TI |
61 | |
62 | struct snd_cs5530 { | |
63 | struct snd_card *card; | |
64 | struct pci_dev *pci; | |
65 | struct snd_sb *sb; | |
66 | unsigned long pci_base; | |
67 | }; | |
68 | ||
cebe41d4 | 69 | static DEFINE_PCI_DEVICE_TABLE(snd_cs5530_ids) = { |
621887ae TI |
70 | {PCI_VENDOR_ID_CYRIX, PCI_DEVICE_ID_CYRIX_5530_AUDIO, PCI_ANY_ID, |
71 | PCI_ANY_ID, 0, 0}, | |
72 | {0,} | |
73 | }; | |
74 | ||
75 | MODULE_DEVICE_TABLE(pci, snd_cs5530_ids); | |
76 | ||
77 | static 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 | ||
85 | static 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 | ||
e23e7a14 | 91 | static void snd_cs5530_remove(struct pci_dev *pci) |
621887ae TI |
92 | { |
93 | snd_card_free(pci_get_drvdata(pci)); | |
621887ae TI |
94 | } |
95 | ||
e23e7a14 | 96 | static u8 snd_cs5530_mixer_read(unsigned long io, u8 reg) |
621887ae TI |
97 | { |
98 | outb(reg, io + 4); | |
99 | udelay(20); | |
100 | reg = inb(io + 5); | |
101 | udelay(20); | |
102 | return reg; | |
103 | } | |
104 | ||
e23e7a14 BP |
105 | static int snd_cs5530_create(struct snd_card *card, |
106 | struct pci_dev *pci, | |
107 | struct snd_cs5530 **rchip) | |
621887ae TI |
108 | { |
109 | struct snd_cs5530 *chip; | |
110 | unsigned long sb_base; | |
111 | u8 irq, dma8, dma16 = 0; | |
112 | u16 map; | |
113 | void __iomem *mem; | |
114 | int err; | |
115 | ||
116 | static struct snd_device_ops ops = { | |
117 | .dev_free = snd_cs5530_dev_free, | |
118 | }; | |
119 | *rchip = NULL; | |
120 | ||
121 | err = pci_enable_device(pci); | |
122 | if (err < 0) | |
123 | return err; | |
124 | ||
125 | chip = kzalloc(sizeof(*chip), GFP_KERNEL); | |
126 | if (chip == NULL) { | |
127 | pci_disable_device(pci); | |
128 | return -ENOMEM; | |
129 | } | |
130 | ||
131 | chip->card = card; | |
132 | chip->pci = pci; | |
133 | ||
134 | err = pci_request_regions(pci, "CS5530"); | |
135 | if (err < 0) { | |
136 | kfree(chip); | |
137 | pci_disable_device(pci); | |
138 | return err; | |
139 | } | |
140 | chip->pci_base = pci_resource_start(pci, 0); | |
141 | ||
2f5ad54e | 142 | mem = pci_ioremap_bar(pci, 0); |
621887ae | 143 | if (mem == NULL) { |
5a798394 | 144 | snd_cs5530_free(chip); |
621887ae TI |
145 | return -EBUSY; |
146 | } | |
147 | ||
148 | map = readw(mem + 0x18); | |
149 | iounmap(mem); | |
150 | ||
151 | /* Map bits | |
152 | 0:1 * 0x20 + 0x200 = sb base | |
153 | 2 sb enable | |
154 | 3 adlib enable | |
155 | 5 MPU enable 0x330 | |
156 | 6 MPU enable 0x300 | |
157 | ||
158 | The other bits may be used internally so must be masked */ | |
159 | ||
160 | sb_base = 0x220 + 0x20 * (map & 3); | |
161 | ||
162 | if (map & (1<<2)) | |
163 | printk(KERN_INFO "CS5530: XpressAudio at 0x%lx\n", sb_base); | |
164 | else { | |
165 | printk(KERN_ERR "Could not find XpressAudio!\n"); | |
166 | snd_cs5530_free(chip); | |
167 | return -ENODEV; | |
168 | } | |
169 | ||
170 | if (map & (1<<5)) | |
171 | printk(KERN_INFO "CS5530: MPU at 0x300\n"); | |
172 | else if (map & (1<<6)) | |
173 | printk(KERN_INFO "CS5530: MPU at 0x330\n"); | |
174 | ||
175 | irq = snd_cs5530_mixer_read(sb_base, 0x80) & 0x0F; | |
176 | dma8 = snd_cs5530_mixer_read(sb_base, 0x81); | |
177 | ||
178 | if (dma8 & 0x20) | |
179 | dma16 = 5; | |
180 | else if (dma8 & 0x40) | |
181 | dma16 = 6; | |
182 | else if (dma8 & 0x80) | |
183 | dma16 = 7; | |
184 | else { | |
185 | printk(KERN_ERR "CS5530: No 16bit DMA enabled\n"); | |
186 | snd_cs5530_free(chip); | |
187 | return -ENODEV; | |
188 | } | |
189 | ||
190 | if (dma8 & 0x01) | |
191 | dma8 = 0; | |
192 | else if (dma8 & 02) | |
193 | dma8 = 1; | |
194 | else if (dma8 & 0x08) | |
195 | dma8 = 3; | |
196 | else { | |
197 | printk(KERN_ERR "CS5530: No 8bit DMA enabled\n"); | |
198 | snd_cs5530_free(chip); | |
199 | return -ENODEV; | |
200 | } | |
201 | ||
202 | if (irq & 1) | |
203 | irq = 9; | |
204 | else if (irq & 2) | |
205 | irq = 5; | |
206 | else if (irq & 4) | |
207 | irq = 7; | |
208 | else if (irq & 8) | |
209 | irq = 10; | |
210 | else { | |
211 | printk(KERN_ERR "CS5530: SoundBlaster IRQ not set\n"); | |
212 | snd_cs5530_free(chip); | |
213 | return -ENODEV; | |
214 | } | |
215 | ||
216 | printk(KERN_INFO "CS5530: IRQ: %d DMA8: %d DMA16: %d\n", irq, dma8, | |
217 | dma16); | |
218 | ||
219 | err = snd_sbdsp_create(card, sb_base, irq, snd_sb16dsp_interrupt, dma8, | |
220 | dma16, SB_HW_CS5530, &chip->sb); | |
221 | if (err < 0) { | |
222 | printk(KERN_ERR "CS5530: Could not create SoundBlaster\n"); | |
223 | snd_cs5530_free(chip); | |
224 | return err; | |
225 | } | |
226 | ||
227 | err = snd_sb16dsp_pcm(chip->sb, 0, &chip->sb->pcm); | |
228 | if (err < 0) { | |
229 | printk(KERN_ERR "CS5530: Could not create PCM\n"); | |
230 | snd_cs5530_free(chip); | |
231 | return err; | |
232 | } | |
233 | ||
234 | err = snd_sbmixer_new(chip->sb); | |
235 | if (err < 0) { | |
236 | printk(KERN_ERR "CS5530: Could not create Mixer\n"); | |
237 | snd_cs5530_free(chip); | |
238 | return err; | |
239 | } | |
240 | ||
241 | err = snd_device_new(card, SNDRV_DEV_LOWLEVEL, chip, &ops); | |
242 | if (err < 0) { | |
243 | snd_cs5530_free(chip); | |
244 | return err; | |
245 | } | |
246 | ||
247 | snd_card_set_dev(card, &pci->dev); | |
248 | *rchip = chip; | |
249 | return 0; | |
250 | } | |
251 | ||
e23e7a14 BP |
252 | static int snd_cs5530_probe(struct pci_dev *pci, |
253 | const struct pci_device_id *pci_id) | |
621887ae TI |
254 | { |
255 | static int dev; | |
256 | struct snd_card *card; | |
257 | struct snd_cs5530 *chip = NULL; | |
258 | int err; | |
259 | ||
260 | if (dev >= SNDRV_CARDS) | |
261 | return -ENODEV; | |
262 | if (!enable[dev]) { | |
263 | dev++; | |
264 | return -ENOENT; | |
265 | } | |
266 | ||
e58de7ba | 267 | err = snd_card_create(index[dev], id[dev], THIS_MODULE, 0, &card); |
621887ae | 268 | |
e58de7ba TI |
269 | if (err < 0) |
270 | return err; | |
621887ae TI |
271 | |
272 | err = snd_cs5530_create(card, pci, &chip); | |
273 | if (err < 0) { | |
274 | snd_card_free(card); | |
275 | return err; | |
276 | } | |
277 | ||
278 | strcpy(card->driver, "CS5530"); | |
279 | strcpy(card->shortname, "CS5530 Audio"); | |
280 | sprintf(card->longname, "%s at 0x%lx", card->shortname, chip->pci_base); | |
281 | ||
282 | err = snd_card_register(card); | |
283 | if (err < 0) { | |
284 | snd_card_free(card); | |
285 | return err; | |
286 | } | |
287 | pci_set_drvdata(pci, card); | |
288 | dev++; | |
289 | return 0; | |
290 | } | |
291 | ||
e9f66d9b | 292 | static struct pci_driver cs5530_driver = { |
3733e424 | 293 | .name = KBUILD_MODNAME, |
621887ae TI |
294 | .id_table = snd_cs5530_ids, |
295 | .probe = snd_cs5530_probe, | |
e23e7a14 | 296 | .remove = snd_cs5530_remove, |
621887ae TI |
297 | }; |
298 | ||
e9f66d9b | 299 | module_pci_driver(cs5530_driver); |