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
|
/*
* Driver for generic MPU-401 boards (UART mode only)
* Copyright (c) by Jaroslav Kysela <perex@suse.cz>
* Copyright (c) 2004 by Castet Matthieu <castet.matthieu@free.fr>
*
*
* 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/pnp.h>
#include <linux/moduleparam.h>
#include <sound/core.h>
#include <sound/mpu401.h>
#include <sound/initval.h>
MODULE_AUTHOR("Jaroslav Kysela <perex@suse.cz>");
MODULE_DESCRIPTION("MPU-401 UART");
MODULE_LICENSE("GPL");
static int index[SNDRV_CARDS] = {[0 ... (SNDRV_CARDS - 1)] = -2}; /* exclude the first card */
static char *id[SNDRV_CARDS] = SNDRV_DEFAULT_STR; /* ID for this card */
static int enable[SNDRV_CARDS] = SNDRV_DEFAULT_ENABLE; /* Enable this card */
#ifdef CONFIG_PNP
static int pnp[SNDRV_CARDS] = {[0 ... (SNDRV_CARDS - 1)] = 1};
#endif
static long port[SNDRV_CARDS] = SNDRV_DEFAULT_PORT; /* MPU-401 port number */
static int irq[SNDRV_CARDS] = SNDRV_DEFAULT_IRQ; /* MPU-401 IRQ */
module_param_array(index, int, NULL, 0444);
MODULE_PARM_DESC(index, "Index value for MPU-401 device.");
module_param_array(id, charp, NULL, 0444);
MODULE_PARM_DESC(id, "ID string for MPU-401 device.");
module_param_array(enable, bool, NULL, 0444);
MODULE_PARM_DESC(enable, "Enable MPU-401 device.");
#ifdef CONFIG_PNP
module_param_array(pnp, bool, NULL, 0444);
MODULE_PARM_DESC(pnp, "PnP detection for MPU-401 device.");
#endif
module_param_array(port, long, NULL, 0444);
MODULE_PARM_DESC(port, "Port # for MPU-401 device.");
module_param_array(irq, int, NULL, 0444);
MODULE_PARM_DESC(irq, "IRQ # for MPU-401 device.");
static snd_card_t *snd_mpu401_legacy_cards[SNDRV_CARDS] = SNDRV_DEFAULT_PTR;
static int pnp_registered = 0;
static int snd_mpu401_create(int dev, snd_card_t **rcard)
{
snd_card_t *card;
int err;
*rcard = NULL;
card = snd_card_new(index[dev], id[dev], THIS_MODULE, 0);
if (card == NULL)
return -ENOMEM;
strcpy(card->driver, "MPU-401 UART");
strcpy(card->shortname, card->driver);
sprintf(card->longname, "%s at %#lx, ", card->shortname, port[dev]);
if (irq[dev] >= 0) {
sprintf(card->longname + strlen(card->longname), "irq %d", irq[dev]);
} else {
strcat(card->longname, "polled");
}
if ((err = snd_mpu401_uart_new(card, 0,
MPU401_HW_MPU401,
port[dev], 0,
irq[dev], irq[dev] >= 0 ? SA_INTERRUPT : 0, NULL)) < 0) {
printk(KERN_ERR "MPU401 not detected at 0x%lx\n", port[dev]);
goto _err;
}
if ((err = snd_card_set_generic_dev(card)) < 0)
goto _err;
if ((err = snd_card_register(card)) < 0)
goto _err;
*rcard = card;
return 0;
_err:
snd_card_free(card);
return err;
}
static int __devinit snd_mpu401_probe(int dev)
{
if (port[dev] == SNDRV_AUTO_PORT) {
snd_printk(KERN_ERR "specify port\n");
return -EINVAL;
}
if (irq[dev] == SNDRV_AUTO_IRQ) {
snd_printk(KERN_ERR "specify or disable IRQ\n");
return -EINVAL;
}
return snd_mpu401_create(dev, &snd_mpu401_legacy_cards[dev]);
}
#ifdef CONFIG_PNP
#define IO_EXTENT 2
static struct pnp_device_id snd_mpu401_pnpids[] = {
{ .id = "PNPb006" },
{ .id = "" }
};
MODULE_DEVICE_TABLE(pnp, snd_mpu401_pnpids);
static int __init snd_mpu401_pnp(int dev, struct pnp_dev *device,
const struct pnp_device_id *id)
{
if (!pnp_port_valid(device, 0) ||
pnp_port_flags(device, 0) & IORESOURCE_DISABLED) {
snd_printk(KERN_ERR "no PnP port\n");
return -ENODEV;
}
if (pnp_port_len(device, 0) < IO_EXTENT) {
snd_printk(KERN_ERR "PnP port length is %ld, expected %d\n",
pnp_port_len(device, 0), IO_EXTENT);
return -ENODEV;
}
port[dev] = pnp_port_start(device, 0);
if (!pnp_irq_valid(device, 0) ||
pnp_irq_flags(device, 0) & IORESOURCE_DISABLED) {
snd_printk(KERN_WARNING "no PnP irq, using polling\n");
irq[dev] = -1;
} else {
irq[dev] = pnp_irq(device, 0);
}
return 0;
}
static int __devinit snd_mpu401_pnp_probe(struct pnp_dev *pnp_dev,
const struct pnp_device_id *id)
{
static int dev;
snd_card_t *card;
int err;
for ( ; dev < SNDRV_CARDS; ++dev) {
if (!enable[dev] || !pnp[dev])
continue;
err = snd_mpu401_pnp(dev, pnp_dev, id);
if (err < 0)
return err;
err = snd_mpu401_create(dev, &card);
if (err < 0)
return err;
snd_card_set_dev(card, &pnp_dev->dev);
pnp_set_drvdata(pnp_dev, card);
++dev;
return 0;
}
return -ENODEV;
}
static void __devexit snd_mpu401_pnp_remove(struct pnp_dev *dev)
{
snd_card_t *card = (snd_card_t *) pnp_get_drvdata(dev);
snd_card_disconnect(card);
snd_card_free_in_thread(card);
}
static struct pnp_driver snd_mpu401_pnp_driver = {
.name = "mpu401",
.id_table = snd_mpu401_pnpids,
.probe = snd_mpu401_pnp_probe,
.remove = __devexit_p(snd_mpu401_pnp_remove),
};
#else
static struct pnp_driver snd_mpu401_pnp_driver;
#endif
static int __init alsa_card_mpu401_init(void)
{
int dev, devices = 0;
int err;
for (dev = 0; dev < SNDRV_CARDS; dev++) {
if (!enable[dev])
continue;
#ifdef CONFIG_PNP
if (pnp[dev])
continue;
#endif
if (snd_mpu401_probe(dev) >= 0)
devices++;
}
if ((err = pnp_register_driver(&snd_mpu401_pnp_driver)) >= 0) {
pnp_registered = 1;
devices += err;
}
if (!devices) {
#ifdef MODULE
printk(KERN_ERR "MPU-401 device not found or device busy\n");
#endif
if (pnp_registered)
pnp_unregister_driver(&snd_mpu401_pnp_driver);
return -ENODEV;
}
return 0;
}
static void __exit alsa_card_mpu401_exit(void)
{
int idx;
if (pnp_registered)
pnp_unregister_driver(&snd_mpu401_pnp_driver);
for (idx = 0; idx < SNDRV_CARDS; idx++)
snd_card_free(snd_mpu401_legacy_cards[idx]);
}
module_init(alsa_card_mpu401_init)
module_exit(alsa_card_mpu401_exit)
|
