2 * Driver for Aztech Sound Galaxy cards
3 * Copyright (c) by Christopher Butler <chrisb@sandy.force9.co.uk.
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)
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.
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.
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
24 #include <sound/driver.h>
26 #include <linux/init.h>
27 #include <linux/delay.h>
28 #include <linux/time.h>
29 #include <linux/interrupt.h>
30 #include <linux/moduleparam.h>
31 #include <sound/core.h>
33 #include <sound/ad1848.h>
34 #include <sound/control.h>
35 #define SNDRV_LEGACY_FIND_FREE_IRQ
36 #define SNDRV_LEGACY_FIND_FREE_DMA
37 #include <sound/initval.h>
39 MODULE_AUTHOR("Christopher Butler <chrisb@sandy.force9.co.uk>");
40 MODULE_DESCRIPTION("Aztech Sound Galaxy");
41 MODULE_LICENSE("GPL");
42 MODULE_SUPPORTED_DEVICE("{{Aztech Systems,Sound Galaxy}}");
44 static int index
[SNDRV_CARDS
] = SNDRV_DEFAULT_IDX
; /* Index 0-MAX */
45 static char *id
[SNDRV_CARDS
] = SNDRV_DEFAULT_STR
; /* ID for this card */
46 static int enable
[SNDRV_CARDS
] = SNDRV_DEFAULT_ENABLE
; /* Enable this card */
47 static long sbport
[SNDRV_CARDS
] = SNDRV_DEFAULT_PORT
; /* 0x220,0x240 */
48 static long wssport
[SNDRV_CARDS
] = SNDRV_DEFAULT_PORT
; /* 0x530,0xe80,0xf40,0x604 */
49 static int irq
[SNDRV_CARDS
] = SNDRV_DEFAULT_IRQ
; /* 7,9,10,11 */
50 static int dma1
[SNDRV_CARDS
] = SNDRV_DEFAULT_DMA
; /* 0,1,3 */
52 module_param_array(index
, int, NULL
, 0444);
53 MODULE_PARM_DESC(index
, "Index value for Sound Galaxy soundcard.");
54 module_param_array(id
, charp
, NULL
, 0444);
55 MODULE_PARM_DESC(id
, "ID string for Sound Galaxy soundcard.");
56 module_param_array(sbport
, long, NULL
, 0444);
57 MODULE_PARM_DESC(sbport
, "Port # for Sound Galaxy SB driver.");
58 module_param_array(wssport
, long, NULL
, 0444);
59 MODULE_PARM_DESC(wssport
, "Port # for Sound Galaxy WSS driver.");
60 module_param_array(irq
, int, NULL
, 0444);
61 MODULE_PARM_DESC(irq
, "IRQ # for Sound Galaxy driver.");
62 module_param_array(dma1
, int, NULL
, 0444);
63 MODULE_PARM_DESC(dma1
, "DMA1 # for Sound Galaxy driver.");
65 #define SGALAXY_AUXC_LEFT 18
66 #define SGALAXY_AUXC_RIGHT 19
68 static snd_card_t
*snd_sgalaxy_cards
[SNDRV_CARDS
] = SNDRV_DEFAULT_PTR
;
70 #define PFX "sgalaxy: "
76 #define AD1848P1( port, x ) ( port + c_d_c_AD1848##x )
78 /* from lowlevel/sb/sb.c - to avoid having to allocate a sb_t for the */
79 /* short time we actually need it.. */
81 static int snd_sgalaxy_sbdsp_reset(unsigned long port
)
85 outb(1, SBP1(port
, RESET
));
87 outb(0, SBP1(port
, RESET
));
89 for (i
= 0; i
< 1000 && !(inb(SBP1(port
, DATA_AVAIL
)) & 0x80); i
++);
90 if (inb(SBP1(port
, READ
)) != 0xaa) {
91 snd_printd("sb_reset: failed at 0x%lx!!!\n", port
);
97 static int __init
snd_sgalaxy_sbdsp_command(unsigned long port
, unsigned char val
)
101 for (i
= 10000; i
; i
--)
102 if ((inb(SBP1(port
, STATUS
)) & 0x80) == 0) {
103 outb(val
, SBP1(port
, COMMAND
));
110 static irqreturn_t
snd_sgalaxy_dummy_interrupt(int irq
, void *dev_id
, struct pt_regs
*regs
)
115 static int __init
snd_sgalaxy_setup_wss(unsigned long port
, int irq
, int dma
)
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};
122 if ((tmp
= inb(port
+ 3)) == 0xff)
124 snd_printdd("I/O address dead (0x%lx)\n", port
);
128 snd_printdd("WSS signature = 0x%x\n", tmp
);
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",
140 snd_printdd(PFX
"setting up IRQ/DMA for WSS\n");
143 /* initialize IRQ for WSS codec */
144 tmp
= interrupt_bits
[irq
% 16];
148 if (request_irq(irq
, snd_sgalaxy_dummy_interrupt
, SA_INTERRUPT
, "sgalaxy", NULL
)) {
149 snd_printk(KERN_ERR
"sgalaxy: can't grab irq %d\n", irq
);
153 outb(tmp
| 0x40, port
);
154 tmp1
= dma_bits
[dma
% 4];
155 outb(tmp
| tmp1
, port
);
162 static int __init
snd_sgalaxy_detect(int dev
, int irq
, int dma
)
165 snd_printdd(PFX
"switching to WSS mode\n");
168 /* switch to WSS mode */
169 snd_sgalaxy_sbdsp_reset(sbport
[dev
]);
171 snd_sgalaxy_sbdsp_command(sbport
[dev
], 9);
172 snd_sgalaxy_sbdsp_command(sbport
[dev
], 0);
175 return snd_sgalaxy_setup_wss(wssport
[dev
], irq
, dma
);
178 static struct ad1848_mix_elem snd_sgalaxy_controls
[] = {
179 AD1848_DOUBLE("Aux Playback Switch", 0, SGALAXY_AUXC_LEFT
, SGALAXY_AUXC_RIGHT
, 7, 7, 1, 1),
180 AD1848_DOUBLE("Aux Playback Volume", 0, SGALAXY_AUXC_LEFT
, SGALAXY_AUXC_RIGHT
, 0, 0, 31, 0)
183 static int __init
snd_sgalaxy_mixer(ad1848_t
*chip
)
185 snd_card_t
*card
= chip
->card
;
186 snd_ctl_elem_id_t id1
, id2
;
190 memset(&id1
, 0, sizeof(id1
));
191 memset(&id2
, 0, sizeof(id2
));
192 id1
.iface
= id2
.iface
= SNDRV_CTL_ELEM_IFACE_MIXER
;
193 /* reassign AUX0 to LINE */
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)
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)
202 /* reassign AUX1 to FM */
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)
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)
211 /* build AUX2 input */
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)
219 static int __init
snd_sgalaxy_probe(int dev
)
221 static int possible_irqs
[] = {7, 9, 10, 11, -1};
222 static int possible_dmas
[] = {1, 3, 0, -1};
223 int err
, xirq
, xdma1
;
227 if (sbport
[dev
] == SNDRV_AUTO_PORT
) {
228 snd_printk(KERN_ERR PFX
"specify SB port\n");
231 if (wssport
[dev
] == SNDRV_AUTO_PORT
) {
232 snd_printk(KERN_ERR PFX
"specify WSS port\n");
235 card
= snd_card_new(index
[dev
], id
[dev
], THIS_MODULE
, 0);
240 if (xirq
== SNDRV_AUTO_IRQ
) {
241 if ((xirq
= snd_legacy_find_free_irq(possible_irqs
)) < 0) {
242 snd_printk(KERN_ERR PFX
"unable to find a free IRQ\n");
248 if (xdma1
== SNDRV_AUTO_DMA
) {
249 if ((xdma1
= snd_legacy_find_free_dma(possible_dmas
)) < 0) {
250 snd_printk(KERN_ERR PFX
"unable to find a free DMA\n");
256 if ((err
= snd_sgalaxy_detect(dev
, xirq
, xdma1
)) < 0)
259 if ((err
= snd_ad1848_create(card
, wssport
[dev
] + 4,
261 AD1848_HW_DETECT
, &chip
)) < 0)
264 if ((err
= snd_ad1848_pcm(chip
, 0, NULL
)) < 0) {
265 snd_printdd(PFX
"error creating new ad1848 PCM device\n");
268 if ((err
= snd_ad1848_mixer(chip
)) < 0) {
269 snd_printdd(PFX
"error creating new ad1848 mixer\n");
272 if ((err
= snd_sgalaxy_mixer(chip
)) < 0) {
273 snd_printdd(PFX
"the mixer rewrite failed\n");
277 strcpy(card
->driver
, "Sound Galaxy");
278 strcpy(card
->shortname
, "Sound Galaxy");
279 sprintf(card
->longname
, "Sound Galaxy at 0x%lx, irq %d, dma %d",
280 wssport
[dev
], xirq
, xdma1
);
282 if ((err
= snd_card_set_generic_dev(card
)) < 0)
285 if ((err
= snd_card_register(card
)) < 0)
288 snd_sgalaxy_cards
[dev
] = card
;
296 static int __init
alsa_card_sgalaxy_init(void)
300 for (dev
= cards
= 0; dev
< SNDRV_CARDS
&& enable
[dev
]; dev
++) {
301 if (snd_sgalaxy_probe(dev
) >= 0)
306 snd_printk(KERN_ERR
"Sound Galaxy soundcard not found or device busy\n");
314 static void __exit
alsa_card_sgalaxy_exit(void)
318 for (idx
= 0; idx
< SNDRV_CARDS
; idx
++)
319 snd_card_free(snd_sgalaxy_cards
[idx
]);
322 module_init(alsa_card_sgalaxy_init
)
323 module_exit(alsa_card_sgalaxy_exit
)