1 /*
2 * Driver for Aztech Sound Galaxy cards
3 * Copyright (c) by Christopher Butler <chrisb@sandy.force9.co.uk.
4 *
5 * I don't have documentation for this card, I based this driver on the
6 * driver for OSS/Free included in the kernel source (drivers/sound/sgalaxy.c)
7 *
8 * This program is free software; you can redistribute it and/or modify
9 * it under the terms of the GNU General Public License as published by
10 * the Free Software Foundation; either version 2 of the License, or
11 * (at your option) any later version.
12 *
13 * This program is distributed in the hope that it will be useful,
14 * but WITHOUT ANY WARRANTY; without even the implied warranty of
15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16 * GNU General Public License for more details.
17 *
18 * You should have received a copy of the GNU General Public License
19 * along with this program; if not, write to the Free Software
20 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
21 *
22 */
23
24 #include <linux/init.h>
25 #include <linux/err.h>
26 #include <linux/isa.h>
27 #include <linux/delay.h>
28 #include <linux/time.h>
29 #include <linux/interrupt.h>
30 #include <linux/moduleparam.h>
31 #include <asm/dma.h>
32 #include <sound/core.h>
33 #include <sound/sb.h>
34 #include <sound/wss.h>
35 #include <sound/control.h>
36 #define SNDRV_LEGACY_FIND_FREE_IRQ
37 #define SNDRV_LEGACY_FIND_FREE_DMA
38 #include <sound/initval.h>
39
40 MODULE_AUTHOR("Christopher Butler <chrisb@sandy.force9.co.uk>");
41 MODULE_DESCRIPTION("Aztech Sound Galaxy");
42 MODULE_LICENSE("GPL");
43 MODULE_SUPPORTED_DEVICE("{{Aztech Systems,Sound Galaxy}}");
44
45 static int index[SNDRV_CARDS] = SNDRV_DEFAULT_IDX; /* Index 0-MAX */
46 static char *id[SNDRV_CARDS] = SNDRV_DEFAULT_STR; /* ID for this card */
47 static int enable[SNDRV_CARDS] = SNDRV_DEFAULT_ENABLE; /* Enable this card */
48 static long sbport[SNDRV_CARDS] = SNDRV_DEFAULT_PORT; /* 0x220,0x240 */
49 static long wssport[SNDRV_CARDS] = SNDRV_DEFAULT_PORT; /* 0x530,0xe80,0xf40,0x604 */
50 static int irq[SNDRV_CARDS] = SNDRV_DEFAULT_IRQ; /* 7,9,10,11 */
51 static int dma1[SNDRV_CARDS] = SNDRV_DEFAULT_DMA; /* 0,1,3 */
52
53 module_param_array(index, int, NULL, 0444);
54 MODULE_PARM_DESC(index, "Index value for Sound Galaxy soundcard.");
55 module_param_array(id, charp, NULL, 0444);
56 MODULE_PARM_DESC(id, "ID string for Sound Galaxy soundcard.");
57 module_param_array(sbport, long, NULL, 0444);
58 MODULE_PARM_DESC(sbport, "Port # for Sound Galaxy SB driver.");
59 module_param_array(wssport, long, NULL, 0444);
60 MODULE_PARM_DESC(wssport, "Port # for Sound Galaxy WSS driver.");
61 module_param_array(irq, int, NULL, 0444);
62 MODULE_PARM_DESC(irq, "IRQ # for Sound Galaxy driver.");
63 module_param_array(dma1, int, NULL, 0444);
64 MODULE_PARM_DESC(dma1, "DMA1 # for Sound Galaxy driver.");
65
66 #define SGALAXY_AUXC_LEFT 18
67 #define SGALAXY_AUXC_RIGHT 19
68
69 #define PFX "sgalaxy: "
70
71 /*
72
73 */
74
75 #define AD1848P1( port, x ) ( port + c_d_c_AD1848##x )
76
77 /* from lowlevel/sb/sb.c - to avoid having to allocate a struct snd_sb for the */
78 /* short time we actually need it.. */
79
snd_sgalaxy_sbdsp_reset(unsigned long port)80 static int snd_sgalaxy_sbdsp_reset(unsigned long port)
81 {
82 int i;
83
84 outb(1, SBP1(port, RESET));
85 udelay(10);
86 outb(0, SBP1(port, RESET));
87 udelay(30);
88 for (i = 0; i < 1000 && !(inb(SBP1(port, DATA_AVAIL)) & 0x80); i++);
89 if (inb(SBP1(port, READ)) != 0xaa) {
90 snd_printd("sb_reset: failed at 0x%lx!!!\n", port);
91 return -ENODEV;
92 }
93 return 0;
94 }
95
snd_sgalaxy_sbdsp_command(unsigned long port,unsigned char val)96 static int __devinit snd_sgalaxy_sbdsp_command(unsigned long port,
97 unsigned char val)
98 {
99 int i;
100
101 for (i = 10000; i; i--)
102 if ((inb(SBP1(port, STATUS)) & 0x80) == 0) {
103 outb(val, SBP1(port, COMMAND));
104 return 1;
105 }
106
107 return 0;
108 }
109
snd_sgalaxy_dummy_interrupt(int irq,void * dev_id)110 static irqreturn_t snd_sgalaxy_dummy_interrupt(int irq, void *dev_id)
111 {
112 return IRQ_NONE;
113 }
114
snd_sgalaxy_setup_wss(unsigned long port,int irq,int dma)115 static int __devinit snd_sgalaxy_setup_wss(unsigned long port, int irq, int dma)
116 {
117 static int interrupt_bits[] = {-1, -1, -1, -1, -1, -1, -1, 0x08, -1,
118 0x10, 0x18, 0x20, -1, -1, -1, -1};
119 static int dma_bits[] = {1, 2, 0, 3};
120 int tmp, tmp1;
121
122 if ((tmp = inb(port + 3)) == 0xff)
123 {
124 snd_printdd("I/O address dead (0x%lx)\n", port);
125 return 0;
126 }
127 #if 0
128 snd_printdd("WSS signature = 0x%x\n", tmp);
129 #endif
130
131 if ((tmp & 0x3f) != 0x04 &&
132 (tmp & 0x3f) != 0x0f &&
133 (tmp & 0x3f) != 0x00) {
134 snd_printdd("No WSS signature detected on port 0x%lx\n",
135 port + 3);
136 return 0;
137 }
138
139 #if 0
140 snd_printdd(PFX "setting up IRQ/DMA for WSS\n");
141 #endif
142
143 /* initialize IRQ for WSS codec */
144 tmp = interrupt_bits[irq % 16];
145 if (tmp < 0)
146 return -EINVAL;
147
148 if (request_irq(irq, snd_sgalaxy_dummy_interrupt, IRQF_DISABLED, "sgalaxy", NULL)) {
149 snd_printk(KERN_ERR "sgalaxy: can't grab irq %d\n", irq);
150 return -EIO;
151 }
152
153 outb(tmp | 0x40, port);
154 tmp1 = dma_bits[dma % 4];
155 outb(tmp | tmp1, port);
156
157 free_irq(irq, NULL);
158
159 return 0;
160 }
161
snd_sgalaxy_detect(int dev,int irq,int dma)162 static int __devinit snd_sgalaxy_detect(int dev, int irq, int dma)
163 {
164 #if 0
165 snd_printdd(PFX "switching to WSS mode\n");
166 #endif
167
168 /* switch to WSS mode */
169 snd_sgalaxy_sbdsp_reset(sbport[dev]);
170
171 snd_sgalaxy_sbdsp_command(sbport[dev], 9);
172 snd_sgalaxy_sbdsp_command(sbport[dev], 0);
173
174 udelay(400);
175 return snd_sgalaxy_setup_wss(wssport[dev], irq, dma);
176 }
177
178 static struct snd_kcontrol_new snd_sgalaxy_controls[] = {
179 WSS_DOUBLE("Aux Playback Switch", 0,
180 SGALAXY_AUXC_LEFT, SGALAXY_AUXC_RIGHT, 7, 7, 1, 1),
181 WSS_DOUBLE("Aux Playback Volume", 0,
182 SGALAXY_AUXC_LEFT, SGALAXY_AUXC_RIGHT, 0, 0, 31, 0)
183 };
184
snd_sgalaxy_mixer(struct snd_wss * chip)185 static int __devinit snd_sgalaxy_mixer(struct snd_wss *chip)
186 {
187 struct snd_card *card = chip->card;
188 struct snd_ctl_elem_id id1, id2;
189 unsigned int idx;
190 int err;
191
192 memset(&id1, 0, sizeof(id1));
193 memset(&id2, 0, sizeof(id2));
194 id1.iface = id2.iface = SNDRV_CTL_ELEM_IFACE_MIXER;
195 /* reassign AUX0 to LINE */
196 strcpy(id1.name, "Aux Playback Switch");
197 strcpy(id2.name, "Line Playback Switch");
198 if ((err = snd_ctl_rename_id(card, &id1, &id2)) < 0)
199 return err;
200 strcpy(id1.name, "Aux Playback Volume");
201 strcpy(id2.name, "Line Playback Volume");
202 if ((err = snd_ctl_rename_id(card, &id1, &id2)) < 0)
203 return err;
204 /* reassign AUX1 to FM */
205 strcpy(id1.name, "Aux Playback Switch"); id1.index = 1;
206 strcpy(id2.name, "FM Playback Switch");
207 if ((err = snd_ctl_rename_id(card, &id1, &id2)) < 0)
208 return err;
209 strcpy(id1.name, "Aux Playback Volume");
210 strcpy(id2.name, "FM Playback Volume");
211 if ((err = snd_ctl_rename_id(card, &id1, &id2)) < 0)
212 return err;
213 /* build AUX2 input */
214 for (idx = 0; idx < ARRAY_SIZE(snd_sgalaxy_controls); idx++) {
215 err = snd_ctl_add(card,
216 snd_ctl_new1(&snd_sgalaxy_controls[idx], chip));
217 if (err < 0)
218 return err;
219 }
220 return 0;
221 }
222
snd_sgalaxy_match(struct device * devptr,unsigned int dev)223 static int __devinit snd_sgalaxy_match(struct device *devptr, unsigned int dev)
224 {
225 if (!enable[dev])
226 return 0;
227 if (sbport[dev] == SNDRV_AUTO_PORT) {
228 snd_printk(KERN_ERR PFX "specify SB port\n");
229 return 0;
230 }
231 if (wssport[dev] == SNDRV_AUTO_PORT) {
232 snd_printk(KERN_ERR PFX "specify WSS port\n");
233 return 0;
234 }
235 return 1;
236 }
237
snd_sgalaxy_probe(struct device * devptr,unsigned int dev)238 static int __devinit snd_sgalaxy_probe(struct device *devptr, unsigned int dev)
239 {
240 static int possible_irqs[] = {7, 9, 10, 11, -1};
241 static int possible_dmas[] = {1, 3, 0, -1};
242 int err, xirq, xdma1;
243 struct snd_card *card;
244 struct snd_wss *chip;
245
246 card = snd_card_new(index[dev], id[dev], THIS_MODULE, 0);
247 if (card == NULL)
248 return -ENOMEM;
249
250 xirq = irq[dev];
251 if (xirq == SNDRV_AUTO_IRQ) {
252 if ((xirq = snd_legacy_find_free_irq(possible_irqs)) < 0) {
253 snd_printk(KERN_ERR PFX "unable to find a free IRQ\n");
254 err = -EBUSY;
255 goto _err;
256 }
257 }
258 xdma1 = dma1[dev];
259 if (xdma1 == SNDRV_AUTO_DMA) {
260 if ((xdma1 = snd_legacy_find_free_dma(possible_dmas)) < 0) {
261 snd_printk(KERN_ERR PFX "unable to find a free DMA\n");
262 err = -EBUSY;
263 goto _err;
264 }
265 }
266
267 if ((err = snd_sgalaxy_detect(dev, xirq, xdma1)) < 0)
268 goto _err;
269
270 err = snd_wss_create(card, wssport[dev] + 4, -1,
271 xirq, xdma1, -1,
272 WSS_HW_DETECT, 0, &chip);
273 if (err < 0)
274 goto _err;
275 card->private_data = chip;
276
277 err = snd_wss_pcm(chip, 0, NULL);
278 if (err < 0) {
279 snd_printdd(PFX "error creating new WSS PCM device\n");
280 goto _err;
281 }
282 err = snd_wss_mixer(chip);
283 if (err < 0) {
284 snd_printdd(PFX "error creating new WSS mixer\n");
285 goto _err;
286 }
287 if ((err = snd_sgalaxy_mixer(chip)) < 0) {
288 snd_printdd(PFX "the mixer rewrite failed\n");
289 goto _err;
290 }
291
292 strcpy(card->driver, "Sound Galaxy");
293 strcpy(card->shortname, "Sound Galaxy");
294 sprintf(card->longname, "Sound Galaxy at 0x%lx, irq %d, dma %d",
295 wssport[dev], xirq, xdma1);
296
297 snd_card_set_dev(card, devptr);
298
299 if ((err = snd_card_register(card)) < 0)
300 goto _err;
301
302 dev_set_drvdata(devptr, card);
303 return 0;
304
305 _err:
306 snd_card_free(card);
307 return err;
308 }
309
snd_sgalaxy_remove(struct device * devptr,unsigned int dev)310 static int __devexit snd_sgalaxy_remove(struct device *devptr, unsigned int dev)
311 {
312 snd_card_free(dev_get_drvdata(devptr));
313 dev_set_drvdata(devptr, NULL);
314 return 0;
315 }
316
317 #ifdef CONFIG_PM
snd_sgalaxy_suspend(struct device * pdev,unsigned int n,pm_message_t state)318 static int snd_sgalaxy_suspend(struct device *pdev, unsigned int n,
319 pm_message_t state)
320 {
321 struct snd_card *card = dev_get_drvdata(pdev);
322 struct snd_wss *chip = card->private_data;
323
324 snd_power_change_state(card, SNDRV_CTL_POWER_D3hot);
325 chip->suspend(chip);
326 return 0;
327 }
328
snd_sgalaxy_resume(struct device * pdev,unsigned int n)329 static int snd_sgalaxy_resume(struct device *pdev, unsigned int n)
330 {
331 struct snd_card *card = dev_get_drvdata(pdev);
332 struct snd_wss *chip = card->private_data;
333
334 chip->resume(chip);
335 snd_wss_out(chip, SGALAXY_AUXC_LEFT, chip->image[SGALAXY_AUXC_LEFT]);
336 snd_wss_out(chip, SGALAXY_AUXC_RIGHT, chip->image[SGALAXY_AUXC_RIGHT]);
337
338 snd_power_change_state(card, SNDRV_CTL_POWER_D0);
339 return 0;
340 }
341 #endif
342
343 #define DEV_NAME "sgalaxy"
344
345 static struct isa_driver snd_sgalaxy_driver = {
346 .match = snd_sgalaxy_match,
347 .probe = snd_sgalaxy_probe,
348 .remove = __devexit_p(snd_sgalaxy_remove),
349 #ifdef CONFIG_PM
350 .suspend = snd_sgalaxy_suspend,
351 .resume = snd_sgalaxy_resume,
352 #endif
353 .driver = {
354 .name = DEV_NAME
355 },
356 };
357
alsa_card_sgalaxy_init(void)358 static int __init alsa_card_sgalaxy_init(void)
359 {
360 return isa_register_driver(&snd_sgalaxy_driver, SNDRV_CARDS);
361 }
362
alsa_card_sgalaxy_exit(void)363 static void __exit alsa_card_sgalaxy_exit(void)
364 {
365 isa_unregister_driver(&snd_sgalaxy_driver);
366 }
367
368 module_init(alsa_card_sgalaxy_init)
369 module_exit(alsa_card_sgalaxy_exit)
370