2 * Driver for generic MPU-401 boards (UART mode only)
3 * Copyright (c) by Jaroslav Kysela <perex@suse.cz>
4 * Copyright (c) 2004 by Castet Matthieu <castet.matthieu@free.fr>
7 * This program is free software; you can redistribute it and/or modify
8 * it under the terms of the GNU General Public License as published by
9 * the Free Software Foundation; either version 2 of the License, or
10 * (at your option) any later version.
12 * This program is distributed in the hope that it will be useful,
13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 * GNU General Public License for more details.
17 * You should have received a copy of the GNU General Public License
18 * along with this program; if not, write to the Free Software
19 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
23 #include <sound/driver.h>
24 #include <linux/init.h>
25 #include <linux/pnp.h>
26 #include <linux/err.h>
27 #include <linux/platform_device.h>
28 #include <linux/moduleparam.h>
29 #include <sound/core.h>
30 #include <sound/mpu401.h>
31 #include <sound/initval.h>
33 MODULE_AUTHOR("Jaroslav Kysela <perex@suse.cz>");
34 MODULE_DESCRIPTION("MPU-401 UART");
35 MODULE_LICENSE("GPL");
37 static int index[SNDRV_CARDS] = {[0 ... (SNDRV_CARDS - 1)] = -2}; /* exclude the first card */
38 static char *id[SNDRV_CARDS] = SNDRV_DEFAULT_STR; /* ID for this card */
39 static int enable[SNDRV_CARDS] = SNDRV_DEFAULT_ENABLE; /* Enable this card */
41 static int pnp[SNDRV_CARDS] = {[0 ... (SNDRV_CARDS - 1)] = 1};
43 static long port[SNDRV_CARDS] = SNDRV_DEFAULT_PORT; /* MPU-401 port number */
44 static int irq[SNDRV_CARDS] = SNDRV_DEFAULT_IRQ; /* MPU-401 IRQ */
46 module_param_array(index, int, NULL, 0444);
47 MODULE_PARM_DESC(index, "Index value for MPU-401 device.");
48 module_param_array(id, charp, NULL, 0444);
49 MODULE_PARM_DESC(id, "ID string for MPU-401 device.");
50 module_param_array(enable, bool, NULL, 0444);
51 MODULE_PARM_DESC(enable, "Enable MPU-401 device.");
53 module_param_array(pnp, bool, NULL, 0444);
54 MODULE_PARM_DESC(pnp, "PnP detection for MPU-401 device.");
56 module_param_array(port, long, NULL, 0444);
57 MODULE_PARM_DESC(port, "Port # for MPU-401 device.");
58 module_param_array(irq, int, NULL, 0444);
59 MODULE_PARM_DESC(irq, "IRQ # for MPU-401 device.");
61 static int pnp_registered = 0;
63 static int snd_mpu401_create(int dev, struct snd_card **rcard)
65 struct snd_card *card;
69 card = snd_card_new(index[dev], id[dev], THIS_MODULE, 0);
72 strcpy(card->driver, "MPU-401 UART");
73 strcpy(card->shortname, card->driver);
74 sprintf(card->longname, "%s at %#lx, ", card->shortname, port[dev]);
76 sprintf(card->longname + strlen(card->longname), "irq %d", irq[dev]);
78 strcat(card->longname, "polled");
81 if ((err = snd_mpu401_uart_new(card, 0,
84 irq[dev], irq[dev] >= 0 ? SA_INTERRUPT : 0, NULL)) < 0) {
85 printk(KERN_ERR "MPU401 not detected at 0x%lx\n", port[dev]);
97 static int __devinit snd_mpu401_probe(struct platform_device *devptr)
101 struct snd_card *card;
103 if (port[dev] == SNDRV_AUTO_PORT) {
104 snd_printk(KERN_ERR "specify port\n");
107 if (irq[dev] == SNDRV_AUTO_IRQ) {
108 snd_printk(KERN_ERR "specify or disable IRQ\n");
111 err = snd_mpu401_create(dev, &card);
114 snd_card_set_dev(card, &devptr->dev);
115 if ((err = snd_card_register(card)) < 0) {
119 platform_set_drvdata(devptr, card);
123 static int __devexit snd_mpu401_remove(struct platform_device *devptr)
125 snd_card_free(platform_get_drvdata(devptr));
126 platform_set_drvdata(devptr, NULL);
130 #define SND_MPU401_DRIVER "snd_mpu401"
132 static struct platform_driver snd_mpu401_driver = {
133 .probe = snd_mpu401_probe,
134 .remove = __devexit_p(snd_mpu401_remove),
136 .name = SND_MPU401_DRIVER
145 static struct pnp_device_id snd_mpu401_pnpids[] = {
150 MODULE_DEVICE_TABLE(pnp, snd_mpu401_pnpids);
152 static int __init snd_mpu401_pnp(int dev, struct pnp_dev *device,
153 const struct pnp_device_id *id)
155 if (!pnp_port_valid(device, 0) ||
156 pnp_port_flags(device, 0) & IORESOURCE_DISABLED) {
157 snd_printk(KERN_ERR "no PnP port\n");
160 if (pnp_port_len(device, 0) < IO_EXTENT) {
161 snd_printk(KERN_ERR "PnP port length is %ld, expected %d\n",
162 pnp_port_len(device, 0), IO_EXTENT);
165 port[dev] = pnp_port_start(device, 0);
167 if (!pnp_irq_valid(device, 0) ||
168 pnp_irq_flags(device, 0) & IORESOURCE_DISABLED) {
169 snd_printk(KERN_WARNING "no PnP irq, using polling\n");
172 irq[dev] = pnp_irq(device, 0);
177 static int __devinit snd_mpu401_pnp_probe(struct pnp_dev *pnp_dev,
178 const struct pnp_device_id *id)
181 struct snd_card *card;
184 for ( ; dev < SNDRV_CARDS; ++dev) {
185 if (!enable[dev] || !pnp[dev])
187 err = snd_mpu401_pnp(dev, pnp_dev, id);
190 err = snd_mpu401_create(dev, &card);
193 if ((err = snd_card_register(card)) < 0) {
197 snd_card_set_dev(card, &pnp_dev->dev);
198 pnp_set_drvdata(pnp_dev, card);
205 static void __devexit snd_mpu401_pnp_remove(struct pnp_dev *dev)
207 struct snd_card *card = (struct snd_card *) pnp_get_drvdata(dev);
209 snd_card_disconnect(card);
210 snd_card_free_in_thread(card);
213 static struct pnp_driver snd_mpu401_pnp_driver = {
215 .id_table = snd_mpu401_pnpids,
216 .probe = snd_mpu401_pnp_probe,
217 .remove = __devexit_p(snd_mpu401_pnp_remove),
220 static struct pnp_driver snd_mpu401_pnp_driver;
223 static int __init alsa_card_mpu401_init(void)
227 if ((err = platform_driver_register(&snd_mpu401_driver)) < 0)
231 for (i = 0; i < SNDRV_CARDS && enable[i]; i++) {
232 struct platform_device *device;
237 device = platform_device_register_simple(SND_MPU401_DRIVER,
239 if (IS_ERR(device)) {
240 err = PTR_ERR(device);
245 if ((err = pnp_register_driver(&snd_mpu401_pnp_driver)) >= 0) {
252 printk(KERN_ERR "MPU-401 device not found or device busy\n");
261 pnp_unregister_driver(&snd_mpu401_pnp_driver);
262 platform_driver_unregister(&snd_mpu401_driver);
266 static void __exit alsa_card_mpu401_exit(void)
269 pnp_unregister_driver(&snd_mpu401_pnp_driver);
270 platform_driver_unregister(&snd_mpu401_driver);
273 module_init(alsa_card_mpu401_init)
274 module_exit(alsa_card_mpu401_exit)