aboutsummaryrefslogtreecommitdiff
path: root/sound/isa/sb/sb8.c
blob: c41ac25e85ca6edcb924bbb8b43f1d4179ccec04 (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
/*
 *  Driver for SoundBlaster 1.0/2.0/Pro soundcards and compatible
 *  Copyright (c) by Jaroslav Kysela <perex@suse.cz>
 *
 *
 *   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/slab.h>
#include <linux/ioport.h>
#include <linux/moduleparam.h>
#include <sound/core.h>
#include <sound/sb.h>
#include <sound/opl3.h>
#define SNDRV_LEGACY_AUTO_PROBE
#include <sound/initval.h>

MODULE_AUTHOR("Jaroslav Kysela <perex@suse.cz>");
MODULE_DESCRIPTION("Sound Blaster 1.0/2.0/Pro");
MODULE_LICENSE("GPL");
MODULE_SUPPORTED_DEVICE("{{Creative Labs,SB 1.0/SB 2.0/SB Pro}}");

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 port[SNDRV_CARDS] = SNDRV_DEFAULT_PORT;	/* 0x220,0x240,0x260 */
static int irq[SNDRV_CARDS] = SNDRV_DEFAULT_IRQ;	/* 5,7,9,10 */
static int dma8[SNDRV_CARDS] = SNDRV_DEFAULT_DMA;	/* 1,3 */

module_param_array(index, int, NULL, 0444);
MODULE_PARM_DESC(index, "Index value for Sound Blaster soundcard.");
module_param_array(id, charp, NULL, 0444);
MODULE_PARM_DESC(id, "ID string for Sound Blaster soundcard.");
module_param_array(enable, bool, NULL, 0444);
MODULE_PARM_DESC(enable, "Enable Sound Blaster soundcard.");
module_param_array(port, long, NULL, 0444);
MODULE_PARM_DESC(port, "Port # for SB8 driver.");
module_param_array(irq, int, NULL, 0444);
MODULE_PARM_DESC(irq, "IRQ # for SB8 driver.");
module_param_array(dma8, int, NULL, 0444);
MODULE_PARM_DESC(dma8, "8-bit DMA # for SB8 driver.");

struct snd_sb8 {
	struct resource *fm_res;	/* used to block FM i/o region for legacy cards */
};

static snd_card_t *snd_sb8_cards[SNDRV_CARDS] = SNDRV_DEFAULT_PTR;

static irqreturn_t snd_sb8_interrupt(int irq, void *dev_id, struct pt_regs *regs)
{
	sb_t *chip = dev_id;

	if (chip->open & SB_OPEN_PCM) {
		return snd_sb8dsp_interrupt(chip);
	} else {
		return snd_sb8dsp_midi_interrupt(chip);
	}
}

static void snd_sb8_free(snd_card_t *card)
{
	struct snd_sb8 *acard = (struct snd_sb8 *)card->private_data;

	if (acard == NULL)
		return;
	if (acard->fm_res) {
		release_resource(acard->fm_res);
		kfree_nocheck(acard->fm_res);
	}
}

static int __init snd_sb8_probe(int dev)
{
	sb_t *chip;
	snd_card_t *card;
	struct snd_sb8 *acard;
	opl3_t *opl3;
	int err;

	card = snd_card_new(index[dev], id[dev], THIS_MODULE,
			    sizeof(struct snd_sb8));
	if (card == NULL)
		return -ENOMEM;
	acard = (struct snd_sb8 *)card->private_data;
	card->private_free = snd_sb8_free;

	/* block the 0x388 port to avoid PnP conflicts */
	acard->fm_res = request_region(0x388, 4, "SoundBlaster FM");

	if ((err = snd_sbdsp_create(card, port[dev], irq[dev],
				    snd_sb8_interrupt,
				    dma8[dev],
				    -1,
				    SB_HW_AUTO,
				    &chip)) < 0)
		goto _err;

	if (chip->hardware >= SB_HW_16) {
		if (chip->hardware == SB_HW_ALS100)
			snd_printk(KERN_WARNING "ALS100 chip detected at 0x%lx, try snd-als100 module\n",
				    port[dev]);
		else
			snd_printk(KERN_WARNING "SB 16 chip detected at 0x%lx, try snd-sb16 module\n",
				   port[dev]);
		err = -ENODEV;
		goto _err;
	}

	if ((err = snd_sb8dsp_pcm(chip, 0, NULL)) < 0)
		goto _err;

	if ((err = snd_sbmixer_new(chip)) < 0)
		goto _err;

	if (chip->hardware == SB_HW_10 || chip->hardware == SB_HW_20) {
		if ((err = snd_opl3_create(card, chip->port + 8, 0,
					   OPL3_HW_AUTO, 1,
					   &opl3)) < 0) {
			snd_printk(KERN_WARNING "sb8: no OPL device at 0x%lx\n", chip->port + 8);
		}
	} else {
		if ((err = snd_opl3_create(card, chip->port, chip->port + 2,
					   OPL3_HW_AUTO, 1,
					   &opl3)) < 0) {
			snd_printk(KERN_WARNING "sb8: no OPL device at 0x%lx-0x%lx\n",
				   chip->port, chip->port + 2);
		}
	}
	if (err >= 0) {
		if ((err = snd_opl3_hwdep_new(opl3, 0, 1, NULL)) < 0)
			goto _err;
	}

	if ((err = snd_sb8dsp_midi(chip, 0, NULL)) < 0)
		goto _err;

	strcpy(card->driver, chip->hardware == SB_HW_PRO ? "SB Pro" : "SB8");
	strcpy(card->shortname, chip->name);
	sprintf(card->longname, "%s at 0x%lx, irq %d, dma %d",
		chip->name,
		chip->port,
		irq[dev], dma8[dev]);

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

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

	snd_sb8_cards[dev] = card;
	return 0;

 _err:
	snd_card_free(card);
	return err;
}

static int __init snd_card_sb8_legacy_auto_probe(unsigned long xport)
{
        static int dev;
        int res;

        for ( ; dev < SNDRV_CARDS; dev++) {
                if (!enable[dev] || port[dev] != SNDRV_AUTO_PORT)
                        continue;
                port[dev] = xport;
                res = snd_sb8_probe(dev);
                if (res < 0)
                        port[dev] = SNDRV_AUTO_PORT;
                return res;
        }
        return -ENODEV;
}

static int __init alsa_card_sb8_init(void)
{
	static unsigned long possible_ports[] = {0x220, 0x240, 0x260, -1};
	int dev, cards, i;

	for (dev = cards = 0; dev < SNDRV_CARDS && enable[dev]; dev++) {
		if (port[dev] == SNDRV_AUTO_PORT)
			continue;
		if (snd_sb8_probe(dev) >= 0)
			cards++;
	}
	i = snd_legacy_auto_probe(possible_ports, snd_card_sb8_legacy_auto_probe);
	if (i > 0)
		cards += i;

	if (!cards) {
#ifdef MODULE
		snd_printk(KERN_ERR "Sound Blaster soundcard not found or device busy\n");
#endif
		return -ENODEV;
	}
	return 0;
}

static void __exit alsa_card_sb8_exit(void)
{
	int idx;

	for (idx = 0; idx < SNDRV_CARDS; idx++)
		snd_card_free(snd_sb8_cards[idx]);
}

module_init(alsa_card_sb8_init)
module_exit(alsa_card_sb8_exit)