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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/ad1848.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
40MODULE_AUTHOR("Christopher Butler <chrisb@sandy.force9.co.uk>");
41MODULE_DESCRIPTION("Aztech Sound Galaxy");
42MODULE_LICENSE("GPL");
43MODULE_SUPPORTED_DEVICE("{{Aztech Systems,Sound Galaxy}}");
44
45static int index[SNDRV_CARDS] = SNDRV_DEFAULT_IDX;
46static char *id[SNDRV_CARDS] = SNDRV_DEFAULT_STR;
47static int enable[SNDRV_CARDS] = SNDRV_DEFAULT_ENABLE;
48static long sbport[SNDRV_CARDS] = SNDRV_DEFAULT_PORT;
49static long wssport[SNDRV_CARDS] = SNDRV_DEFAULT_PORT;
50static int irq[SNDRV_CARDS] = SNDRV_DEFAULT_IRQ;
51static int dma1[SNDRV_CARDS] = SNDRV_DEFAULT_DMA;
52
53module_param_array(index, int, NULL, 0444);
54MODULE_PARM_DESC(index, "Index value for Sound Galaxy soundcard.");
55module_param_array(id, charp, NULL, 0444);
56MODULE_PARM_DESC(id, "ID string for Sound Galaxy soundcard.");
57module_param_array(sbport, long, NULL, 0444);
58MODULE_PARM_DESC(sbport, "Port # for Sound Galaxy SB driver.");
59module_param_array(wssport, long, NULL, 0444);
60MODULE_PARM_DESC(wssport, "Port # for Sound Galaxy WSS driver.");
61module_param_array(irq, int, NULL, 0444);
62MODULE_PARM_DESC(irq, "IRQ # for Sound Galaxy driver.");
63module_param_array(dma1, int, NULL, 0444);
64MODULE_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
78
79
80static 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
96static 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
110static irqreturn_t snd_sgalaxy_dummy_interrupt(int irq, void *dev_id)
111{
112 return IRQ_NONE;
113}
114
115static 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
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
162static 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
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
178static struct ad1848_mix_elem snd_sgalaxy_controls[] = {
179AD1848_DOUBLE("Aux Playback Switch", 0, SGALAXY_AUXC_LEFT, SGALAXY_AUXC_RIGHT, 7, 7, 1, 1),
180AD1848_DOUBLE("Aux Playback Volume", 0, SGALAXY_AUXC_LEFT, SGALAXY_AUXC_RIGHT, 0, 0, 31, 0)
181};
182
183static int __devinit snd_sgalaxy_mixer(struct snd_ad1848 *chip)
184{
185 struct snd_card *card = chip->card;
186 struct snd_ctl_elem_id id1, id2;
187 unsigned int idx;
188 int err;
189
190 memset(&id1, 0, sizeof(id1));
191 memset(&id2, 0, sizeof(id2));
192 id1.iface = id2.iface = SNDRV_CTL_ELEM_IFACE_MIXER;
193
194 strcpy(id1.name, "Aux Playback Switch");
195 strcpy(id2.name, "Line Playback Switch");
196 if ((err = snd_ctl_rename_id(card, &id1, &id2)) < 0)
197 return err;
198 strcpy(id1.name, "Aux Playback Volume");
199 strcpy(id2.name, "Line Playback Volume");
200 if ((err = snd_ctl_rename_id(card, &id1, &id2)) < 0)
201 return err;
202
203 strcpy(id1.name, "Aux Playback Switch"); id1.index = 1;
204 strcpy(id2.name, "FM Playback Switch");
205 if ((err = snd_ctl_rename_id(card, &id1, &id2)) < 0)
206 return err;
207 strcpy(id1.name, "Aux Playback Volume");
208 strcpy(id2.name, "FM Playback Volume");
209 if ((err = snd_ctl_rename_id(card, &id1, &id2)) < 0)
210 return err;
211
212 for (idx = 0; idx < ARRAY_SIZE(snd_sgalaxy_controls); idx++) {
213 if ((err = snd_ad1848_add_ctl_elem(chip, &snd_sgalaxy_controls[idx])) < 0)
214 return err;
215 }
216 return 0;
217}
218
219static int __devinit snd_sgalaxy_match(struct device *devptr, unsigned int dev)
220{
221 if (!enable[dev])
222 return 0;
223 if (sbport[dev] == SNDRV_AUTO_PORT) {
224 snd_printk(KERN_ERR PFX "specify SB port\n");
225 return 0;
226 }
227 if (wssport[dev] == SNDRV_AUTO_PORT) {
228 snd_printk(KERN_ERR PFX "specify WSS port\n");
229 return 0;
230 }
231 return 1;
232}
233
234static int __devinit snd_sgalaxy_probe(struct device *devptr, unsigned int dev)
235{
236 static int possible_irqs[] = {7, 9, 10, 11, -1};
237 static int possible_dmas[] = {1, 3, 0, -1};
238 int err, xirq, xdma1;
239 struct snd_card *card;
240 struct snd_ad1848 *chip;
241
242 card = snd_card_new(index[dev], id[dev], THIS_MODULE, 0);
243 if (card == NULL)
244 return -ENOMEM;
245
246 xirq = irq[dev];
247 if (xirq == SNDRV_AUTO_IRQ) {
248 if ((xirq = snd_legacy_find_free_irq(possible_irqs)) < 0) {
249 snd_printk(KERN_ERR PFX "unable to find a free IRQ\n");
250 err = -EBUSY;
251 goto _err;
252 }
253 }
254 xdma1 = dma1[dev];
255 if (xdma1 == SNDRV_AUTO_DMA) {
256 if ((xdma1 = snd_legacy_find_free_dma(possible_dmas)) < 0) {
257 snd_printk(KERN_ERR PFX "unable to find a free DMA\n");
258 err = -EBUSY;
259 goto _err;
260 }
261 }
262
263 if ((err = snd_sgalaxy_detect(dev, xirq, xdma1)) < 0)
264 goto _err;
265
266 if ((err = snd_ad1848_create(card, wssport[dev] + 4,
267 xirq, xdma1,
268 AD1848_HW_DETECT, &chip)) < 0)
269 goto _err;
270 card->private_data = chip;
271
272 if ((err = snd_ad1848_pcm(chip, 0, NULL)) < 0) {
273 snd_printdd(PFX "error creating new ad1848 PCM device\n");
274 goto _err;
275 }
276 if ((err = snd_ad1848_mixer(chip)) < 0) {
277 snd_printdd(PFX "error creating new ad1848 mixer\n");
278 goto _err;
279 }
280 if ((err = snd_sgalaxy_mixer(chip)) < 0) {
281 snd_printdd(PFX "the mixer rewrite failed\n");
282 goto _err;
283 }
284
285 strcpy(card->driver, "Sound Galaxy");
286 strcpy(card->shortname, "Sound Galaxy");
287 sprintf(card->longname, "Sound Galaxy at 0x%lx, irq %d, dma %d",
288 wssport[dev], xirq, xdma1);
289
290 snd_card_set_dev(card, devptr);
291
292 if ((err = snd_card_register(card)) < 0)
293 goto _err;
294
295 dev_set_drvdata(devptr, card);
296 return 0;
297
298 _err:
299 snd_card_free(card);
300 return err;
301}
302
303static int __devexit snd_sgalaxy_remove(struct device *devptr, unsigned int dev)
304{
305 snd_card_free(dev_get_drvdata(devptr));
306 dev_set_drvdata(devptr, NULL);
307 return 0;
308}
309
310#ifdef CONFIG_PM
311static int snd_sgalaxy_suspend(struct device *pdev, unsigned int n,
312 pm_message_t state)
313{
314 struct snd_card *card = dev_get_drvdata(pdev);
315 struct snd_ad1848 *chip = card->private_data;
316
317 snd_power_change_state(card, SNDRV_CTL_POWER_D3hot);
318 chip->suspend(chip);
319 return 0;
320}
321
322static int snd_sgalaxy_resume(struct device *pdev, unsigned int n)
323{
324 struct snd_card *card = dev_get_drvdata(pdev);
325 struct snd_ad1848 *chip = card->private_data;
326
327 chip->resume(chip);
328 snd_ad1848_out(chip, SGALAXY_AUXC_LEFT, chip->image[SGALAXY_AUXC_LEFT]);
329 snd_ad1848_out(chip, SGALAXY_AUXC_RIGHT, chip->image[SGALAXY_AUXC_RIGHT]);
330
331 snd_power_change_state(card, SNDRV_CTL_POWER_D0);
332 return 0;
333}
334#endif
335
336#define DEV_NAME "sgalaxy"
337
338static struct isa_driver snd_sgalaxy_driver = {
339 .match = snd_sgalaxy_match,
340 .probe = snd_sgalaxy_probe,
341 .remove = __devexit_p(snd_sgalaxy_remove),
342#ifdef CONFIG_PM
343 .suspend = snd_sgalaxy_suspend,
344 .resume = snd_sgalaxy_resume,
345#endif
346 .driver = {
347 .name = DEV_NAME
348 },
349};
350
351static int __init alsa_card_sgalaxy_init(void)
352{
353 return isa_register_driver(&snd_sgalaxy_driver, SNDRV_CARDS);
354}
355
356static void __exit alsa_card_sgalaxy_exit(void)
357{
358 isa_unregister_driver(&snd_sgalaxy_driver);
359}
360
361module_init(alsa_card_sgalaxy_init)
362module_exit(alsa_card_sgalaxy_exit)
363
