summaryrefslogtreecommitdiffstats
path: root/sound/isa/sgalaxy.c
blob: 19e0b0edb8c46028a65242a548a172f2cdb5c876 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
/*
 *  Driver for Aztech Sound Galaxy cards
 *  Copyright (c) by Christopher Butler <chrisb@sandy.force9.co.uk.
 *
 *  I don't have documentation for this card, I based this driver on the
 *  driver for OSS/Free included in the kernel source (drivers/sound/sgalaxy.c)
 *
 *   This program is free software; you can redistribute it and/or modify
 *   it under the terms of the GNU General Public License as published by
 *   the Free Software Foundation; either version 2 of the License, or
 *   (at your option) any later version.
 *
 *   This program is distributed in the hope that it will be useful,
 *   but WITHOUT ANY WARRANTY; without even the implied warranty of
 *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 *   GNU General Public License for more details.
 *
 *   You should have received a copy of the GNU General Public License
 *   along with this program; if not, write to the Free Software
 *   Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307 USA
 *
 */

#include <sound/driver.h>
#include <linux/init.h>
#include <linux/err.h>
#include <linux/isa.h>
#include <linux/delay.h>
#include <linux/time.h>
#include <linux/interrupt.h>
#include <linux/moduleparam.h>
#include <asm/dma.h>
#include <sound/core.h>
#include <sound/sb.h>
#include <sound/ad1848.h>
#include <sound/control.h>
#define SNDRV_LEGACY_FIND_FREE_IRQ
#define SNDRV_LEGACY_FIND_FREE_DMA
#include <sound/initval.h>

MODULE_AUTHOR("Christopher Butler <chrisb@sandy.force9.co.uk>");
MODULE_DESCRIPTION("Aztech Sound Galaxy");
MODULE_LICENSE("GPL");
MODULE_SUPPORTED_DEVICE("{{Aztech Systems,Sound Galaxy}}");

static int index[SNDRV_CARDS] = SNDRV_DEFAULT_IDX;	/* Index 0-MAX */
static char *id[SNDRV_CARDS] = SNDRV_DEFAULT_STR;	/* ID for this card */
static int enable[SNDRV_CARDS] = SNDRV_DEFAULT_ENABLE;	/* Enable this card */
static long sbport[SNDRV_CARDS] = SNDRV_DEFAULT_PORT;	/* 0x220,0x240 */
static long wssport[SNDRV_CARDS] = SNDRV_DEFAULT_PORT;	/* 0x530,0xe80,0xf40,0x604 */
static int irq[SNDRV_CARDS] = SNDRV_DEFAULT_IRQ;	/* 7,9,10,11 */
static int dma1[SNDRV_CARDS] = SNDRV_DEFAULT_DMA;	/* 0,1,3 */

module_param_array(index, int, NULL, 0444);
MODULE_PARM_DESC(index, "Index value for Sound Galaxy soundcard.");
module_param_array(id, charp, NULL, 0444);
MODULE_PARM_DESC(id, "ID string for Sound Galaxy soundcard.");
module_param_array(sbport, long, NULL, 0444);
MODULE_PARM_DESC(sbport, "Port # for Sound Galaxy SB driver.");
module_param_array(wssport, long, NULL, 0444);
MODULE_PARM_DESC(wssport, "Port # for Sound Galaxy WSS driver.");
module_param_array(irq, int, NULL, 0444);
MODULE_PARM_DESC(irq, "IRQ # for Sound Galaxy driver.");
module_param_array(dma1, int, NULL, 0444);
MODULE_PARM_DESC(dma1, "DMA1 # for Sound Galaxy driver.");

#define SGALAXY_AUXC_LEFT 18
#define SGALAXY_AUXC_RIGHT 19

#define PFX	"sgalaxy: "

/*

 */

#define AD1848P1( port, x ) ( port + c_d_c_AD1848##x )

/* from lowlevel/sb/sb.c - to avoid having to allocate a struct snd_sb for the */
/* short time we actually need it.. */

static int snd_sgalaxy_sbdsp_reset(unsigned long port)
{
	int i;

	outb(1, SBP1(port, RESET));
	udelay(10);
	outb(0, SBP1(port, RESET));
	udelay(30);
	for (i = 0; i < 1000 && !(inb(SBP1(port, DATA_AVAIL)) & 0x80); i++);
	if (inb(SBP1(port, READ)) != 0xaa) {
		snd_printd("sb_reset: failed at 0x%lx!!!\n", port);
		return -ENODEV;
	}
	return 0;
}

static int __devinit snd_sgalaxy_sbdsp_command(unsigned long port,
					       unsigned char val)
{
	int i;
       	
	for (i = 10000; i; i--)
		if ((inb(SBP1(port, STATUS)) & 0x80) == 0) {
			outb(val, SBP1(port, COMMAND));
			return 1;
		}

	return 0;
}

static irqreturn_t snd_sgalaxy_dummy_interrupt(int irq, void *dev_id)
{
	return IRQ_NONE;
}

static int __devinit snd_sgalaxy_setup_wss(unsigned long port, int irq, int dma)
{
	static int interrupt_bits[] = {-1, -1, -1, -1, -1, -1, -1, 0x08, -1, 
				       0x10, 0x18, 0x20, -1, -1, -1, -1};
	static int dma_bits[] = {1, 2, 0, 3};
	int tmp, tmp1;

	if ((tmp = inb(port + 3)) == 0xff)
	{
		snd_printdd("I/O address dead (0x%lx)\n", port);
		return 0;
	}
#if 0
	snd_printdd("WSS signature = 0x%x\n", tmp);
#endif

        if ((tmp & 0x3f) != 0x04 &&
            (tmp & 0x3f) != 0x0f &&
            (tmp & 0x3f) != 0x00) {
		snd_printdd("No WSS signature detected on port 0x%lx\n",
			    port + 3);
		return 0;
	}

#if 0
	snd_printdd(PFX "setting up IRQ/DMA for WSS\n");
#endif

        /* initialize IRQ for WSS codec */
        tmp = interrupt_bits[irq % 16];
        if (tmp < 0)
                return -EINVAL;

	if (request_irq(irq, snd_sgalaxy_dummy_interrupt, IRQF_DISABLED, "sgalaxy", NULL)) {
		snd_printk(KERN_ERR "sgalaxy: can't grab irq %d\n", irq);
		return -EIO;
	}

        outb(tmp | 0x40, port);
        tmp1 = dma_bits[dma % 4];
        outb(tmp | tmp1, port);

	free_irq(irq, NULL);

	return 0;
}

static int __devinit snd_sgalaxy_detect(int dev, int irq, int dma)
{
#if 0
	snd_printdd(PFX "switching to WSS mode\n");
#endif

	/* switch to WSS mode */
	snd_sgalaxy_sbdsp_reset(sbport[dev]);

	snd_sgalaxy_sbdsp_command(sbport[dev], 9);
	snd_sgalaxy_sbdsp_command(sbport[dev], 0);

	udelay(400);
	return snd_sgalaxy_setup_wss(wssport[dev], irq, dma);
}

static struct ad1848_mix_elem snd_sgalaxy_controls[] = {
AD1848_DOUBLE("Aux Playback Switch", 0, SGALAXY_AUXC_LEFT, SGALAXY_AUXC_RIGHT, 7, 7, 1, 1),
AD1848_DOUBLE("Aux Playback Volume", 0, SGALAXY_AUXC_LEFT, SGALAXY_AUXC_RIGHT, 0, 0, 31, 0)
};

static int __devinit snd_sgalaxy_mixer(struct snd_ad1848 *chip)
{
	struct snd_card *card = chip->card;
	struct snd_ctl_elem_id id1, id2;
	unsigned int idx;
	int err;

	memset(&id1, 0, sizeof(id1));
	memset(&id2, 0, sizeof(id2));
	id1.iface = id2.iface = SNDRV_CTL_ELEM_IFACE_MIXER;
	/* reassign AUX0 to LINE */
	strcpy(id1.name, "Aux Playback Switch");
	strcpy(id2.name, "Line Playback Switch");
	if ((err = snd_ctl_rename_id(card, &id1, &id2)) < 0)
		return err;
	strcpy(id1.name, "Aux Playback Volume");
	strcpy(id2.name, "Line Playback Volume");
	if ((err = snd_ctl_rename_id(card, &id1, &id2)) < 0)
		return err;
	/* reassign AUX1 to FM */
	strcpy(id1.name, "Aux Playback Switch"); id1.index = 1;
	strcpy(id2.name, "FM Playback Switch");
	if ((err = snd_ctl_rename_id(card, &id1, &id2)) < 0)
		return err;
	strcpy(id1.name, "Aux Playback Volume");
	strcpy(id2.name, "FM Playback Volume");
	if ((err = snd_ctl_rename_id(card, &id1, &id2)) < 0)
		return err;
	/* build AUX2 input */
	for (idx = 0; idx < ARRAY_SIZE(snd_sgalaxy_controls); idx++) {
		if ((err = snd_ad1848_add_ctl_elem(chip, &snd_sgalaxy_controls[idx])) < 0)
			return err;
	}
	return 0;
}

static int __devinit snd_sgalaxy_match(struct device *devptr, unsigned int dev)
{
	if (!enable[dev])
		return 0;
	if (sbport[dev] == SNDRV_AUTO_PORT) {
		snd_printk(KERN_ERR PFX "specify SB port\n");
		return 0;
	}
	if (wssport[dev] == SNDRV_AUTO_PORT) {
		snd_printk(KERN_ERR PFX "specify WSS port\n");
		return 0;
	}
	return 1;
}

static int __devinit snd_sgalaxy_probe(struct device *devptr, unsigned int dev)
{
	static int possible_irqs[] = {7, 9, 10, 11, -1};
	static int possible_dmas[] = {1, 3, 0, -1};
	int err, xirq, xdma1;
	struct snd_card *card;
	struct snd_ad1848 *chip;

	card = snd_card_new(index[dev], id[dev], THIS_MODULE, 0);
	if (card == NULL)
		return -ENOMEM;

	xirq = irq[dev];
	if (xirq == SNDRV_AUTO_IRQ) {
		if ((xirq = snd_legacy_find_free_irq(possible_irqs)) < 0) {
			snd_printk(KERN_ERR PFX "unable to find a free IRQ\n");
			err = -EBUSY;
			goto _err;
		}
	}
	xdma1 = dma1[dev];
        if (xdma1 == SNDRV_AUTO_DMA) {
		if ((xdma1 = snd_legacy_find_free_dma(possible_dmas)) < 0) {
			snd_printk(KERN_ERR PFX "unable to find a free DMA\n");
			err = -EBUSY;
			goto _err;
		}
	}

	if ((err = snd_sgalaxy_detect(dev, xirq, xdma1)) < 0)
		goto _err;

	if ((err = snd_ad1848_create(card, wssport[dev] + 4,
				     xirq, xdma1,
				     AD1848_HW_DETECT, &chip)) < 0)
		goto _err;
	card->private_data = chip;

	if ((err = snd_ad1848_pcm(chip, 0, NULL)) < 0) {
		snd_printdd(PFX "error creating new ad1848 PCM device\n");
		goto _err;
	}
	if ((err = snd_ad1848_mixer(chip)) < 0) {
		snd_printdd(PFX "error creating new ad1848 mixer\n");
		goto _err;
	}
	if ((err = snd_sgalaxy_mixer(chip)) < 0) {
		snd_printdd(PFX "the mixer rewrite failed\n");
		goto _err;
	}

	strcpy(card->driver, "Sound Galaxy");
	strcpy(card->shortname, "Sound Galaxy");
	sprintf(card->longname, "Sound Galaxy at 0x%lx, irq %d, dma %d",
		wssport[dev], xirq, xdma1);

	snd_card_set_dev(card, devptr);

	if ((err = snd_card_register(card)) < 0)
		goto _err;

	dev_set_drvdata(devptr, card);
	return 0;

 _err:
	snd_card_free(card);
	return err;
}

static int __devexit snd_sgalaxy_remove(struct device *devptr, unsigned int dev)
{
	snd_card_free(dev_get_drvdata(devptr));
	dev_set_drvdata(devptr, NULL);
	return 0;
}

#ifdef CONFIG_PM
static int snd_sgalaxy_suspend(struct device *pdev, unsigned int n,
			       pm_message_t state)
{
	struct snd_card *card = dev_get_drvdata(pdev);
	struct snd_ad1848 *chip = card->private_data;

	snd_power_change_state(card, SNDRV_CTL_POWER_D3hot);
	chip->suspend(chip);
	return 0;
}

static int snd_sgalaxy_resume(struct device *pdev, unsigned int n)
{
	struct snd_card *card = dev_get_drvdata(pdev);
	struct snd_ad1848 *chip = card->private_data;

	chip->resume(chip);
	snd_ad1848_out(chip, SGALAXY_AUXC_LEFT, chip->image[SGALAXY_AUXC_LEFT]);
	snd_ad1848_out(chip, SGALAXY_AUXC_RIGHT, chip->image[SGALAXY_AUXC_RIGHT]);

	snd_power_change_state(card, SNDRV_CTL_POWER_D0);
	return 0;
}
#endif

#define SND_SGALAXY_DRIVER	"snd_sgalaxy"

static struct isa_driver snd_sgalaxy_driver = {
	.match		= snd_sgalaxy_match,
	.probe		= snd_sgalaxy_probe,
	.remove		= __devexit_p(snd_sgalaxy_remove),
#ifdef CONFIG_PM
	.suspend	= snd_sgalaxy_suspend,
	.resume		= snd_sgalaxy_resume,
#endif
	.driver		= {
		.name	= SND_SGALAXY_DRIVER
	},
};

static int __init alsa_card_sgalaxy_init(void)
{
	return isa_register_driver(&snd_sgalaxy_driver, SNDRV_CARDS);
}

static void __exit alsa_card_sgalaxy_exit(void)
{
	isa_unregister_driver(&snd_sgalaxy_driver);
}

module_init(alsa_card_sgalaxy_init)
module_exit(alsa_card_sgalaxy_exit)