[PATCH] mpu401 section fix
[linux-2.6.git] / sound / drivers / mpu401 / mpu401.c
1 /*
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>
5  *
6  *
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.
11  *
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.
16  *
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
20  *
21  */
22
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>
32
33 MODULE_AUTHOR("Jaroslav Kysela <perex@suse.cz>");
34 MODULE_DESCRIPTION("MPU-401 UART");
35 MODULE_LICENSE("GPL");
36
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 */
40 #ifdef CONFIG_PNP
41 static int pnp[SNDRV_CARDS] = {[0 ... (SNDRV_CARDS - 1)] = 1};
42 #endif
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 */
45
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.");
52 #ifdef CONFIG_PNP
53 module_param_array(pnp, bool, NULL, 0444);
54 MODULE_PARM_DESC(pnp, "PnP detection for MPU-401 device.");
55 #endif
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.");
60
61 static struct platform_device *platform_devices[SNDRV_CARDS];
62 static int pnp_registered;
63 static unsigned int snd_mpu401_devices;
64
65 static int snd_mpu401_create(int dev, struct snd_card **rcard)
66 {
67         struct snd_card *card;
68         int err;
69
70         *rcard = NULL;
71         card = snd_card_new(index[dev], id[dev], THIS_MODULE, 0);
72         if (card == NULL)
73                 return -ENOMEM;
74         strcpy(card->driver, "MPU-401 UART");
75         strcpy(card->shortname, card->driver);
76         sprintf(card->longname, "%s at %#lx, ", card->shortname, port[dev]);
77         if (irq[dev] >= 0) {
78                 sprintf(card->longname + strlen(card->longname), "irq %d", irq[dev]);
79         } else {
80                 strcat(card->longname, "polled");
81         }
82
83         if ((err = snd_mpu401_uart_new(card, 0,
84                                        MPU401_HW_MPU401,
85                                        port[dev], 0,
86                                        irq[dev], irq[dev] >= 0 ? SA_INTERRUPT : 0, NULL)) < 0) {
87                 printk(KERN_ERR "MPU401 not detected at 0x%lx\n", port[dev]);
88                 goto _err;
89         }
90
91         *rcard = card;
92         return 0;
93
94  _err:
95         snd_card_free(card);
96         return err;
97 }
98
99 static int __devinit snd_mpu401_probe(struct platform_device *devptr)
100 {
101         int dev = devptr->id;
102         int err;
103         struct snd_card *card;
104
105         if (port[dev] == SNDRV_AUTO_PORT) {
106                 snd_printk(KERN_ERR "specify port\n");
107                 return -EINVAL;
108         }
109         if (irq[dev] == SNDRV_AUTO_IRQ) {
110                 snd_printk(KERN_ERR "specify or disable IRQ\n");
111                 return -EINVAL;
112         }
113         err = snd_mpu401_create(dev, &card);
114         if (err < 0)
115                 return err;
116         snd_card_set_dev(card, &devptr->dev);
117         if ((err = snd_card_register(card)) < 0) {
118                 snd_card_free(card);
119                 return err;
120         }
121         platform_set_drvdata(devptr, card);
122         return 0;
123 }
124
125 static int __devexit snd_mpu401_remove(struct platform_device *devptr)
126 {
127         snd_card_free(platform_get_drvdata(devptr));
128         platform_set_drvdata(devptr, NULL);
129         return 0;
130 }
131
132 #define SND_MPU401_DRIVER       "snd_mpu401"
133
134 static struct platform_driver snd_mpu401_driver = {
135         .probe          = snd_mpu401_probe,
136         .remove         = __devexit_p(snd_mpu401_remove),
137         .driver         = {
138                 .name   = SND_MPU401_DRIVER
139         },
140 };
141
142
143 #ifdef CONFIG_PNP
144
145 #define IO_EXTENT 2
146
147 static struct pnp_device_id snd_mpu401_pnpids[] = {
148         { .id = "PNPb006" },
149         { .id = "" }
150 };
151
152 MODULE_DEVICE_TABLE(pnp, snd_mpu401_pnpids);
153
154 static int __devinit snd_mpu401_pnp(int dev, struct pnp_dev *device,
155                                  const struct pnp_device_id *id)
156 {
157         if (!pnp_port_valid(device, 0) ||
158             pnp_port_flags(device, 0) & IORESOURCE_DISABLED) {
159                 snd_printk(KERN_ERR "no PnP port\n");
160                 return -ENODEV;
161         }
162         if (pnp_port_len(device, 0) < IO_EXTENT) {
163                 snd_printk(KERN_ERR "PnP port length is %ld, expected %d\n",
164                            pnp_port_len(device, 0), IO_EXTENT);
165                 return -ENODEV;
166         }
167         port[dev] = pnp_port_start(device, 0);
168
169         if (!pnp_irq_valid(device, 0) ||
170             pnp_irq_flags(device, 0) & IORESOURCE_DISABLED) {
171                 snd_printk(KERN_WARNING "no PnP irq, using polling\n");
172                 irq[dev] = -1;
173         } else {
174                 irq[dev] = pnp_irq(device, 0);
175         }
176         return 0;
177 }
178
179 static int __devinit snd_mpu401_pnp_probe(struct pnp_dev *pnp_dev,
180                                           const struct pnp_device_id *id)
181 {
182         static int dev;
183         struct snd_card *card;
184         int err;
185
186         for ( ; dev < SNDRV_CARDS; ++dev) {
187                 if (!enable[dev] || !pnp[dev])
188                         continue;
189                 err = snd_mpu401_pnp(dev, pnp_dev, id);
190                 if (err < 0)
191                         return err;
192                 err = snd_mpu401_create(dev, &card);
193                 if (err < 0)
194                         return err;
195                 if ((err = snd_card_register(card)) < 0) {
196                         snd_card_free(card);
197                         return err;
198                 }
199                 snd_card_set_dev(card, &pnp_dev->dev);
200                 pnp_set_drvdata(pnp_dev, card);
201                 snd_mpu401_devices++;
202                 ++dev;
203                 return 0;
204         }
205         return -ENODEV;
206 }
207
208 static void __devexit snd_mpu401_pnp_remove(struct pnp_dev *dev)
209 {
210         struct snd_card *card = (struct snd_card *) pnp_get_drvdata(dev);
211
212         snd_card_disconnect(card);
213         snd_card_free_in_thread(card);
214 }
215
216 static struct pnp_driver snd_mpu401_pnp_driver = {
217         .name = "mpu401",
218         .id_table = snd_mpu401_pnpids,
219         .probe = snd_mpu401_pnp_probe,
220         .remove = __devexit_p(snd_mpu401_pnp_remove),
221 };
222 #else
223 static struct pnp_driver snd_mpu401_pnp_driver;
224 #endif
225
226 static void __init_or_module snd_mpu401_unregister_all(void)
227 {
228         int i;
229
230         if (pnp_registered)
231                 pnp_unregister_driver(&snd_mpu401_pnp_driver);
232         for (i = 0; i < ARRAY_SIZE(platform_devices); ++i)
233                 platform_device_unregister(platform_devices[i]);
234         platform_driver_unregister(&snd_mpu401_driver);
235 }
236
237 static int __init alsa_card_mpu401_init(void)
238 {
239         int i, err;
240
241         if ((err = platform_driver_register(&snd_mpu401_driver)) < 0)
242                 return err;
243
244         for (i = 0; i < SNDRV_CARDS; i++) {
245                 struct platform_device *device;
246                 if (! enable[i])
247                         continue;
248 #ifdef CONFIG_PNP
249                 if (pnp[i])
250                         continue;
251 #endif
252                 device = platform_device_register_simple(SND_MPU401_DRIVER,
253                                                          i, NULL, 0);
254                 if (IS_ERR(device))
255                         continue;
256                 platform_devices[i] = device;
257                 snd_mpu401_devices++;
258         }
259         err = pnp_register_driver(&snd_mpu401_pnp_driver);
260         if (!err)
261                 pnp_registered = 1;
262
263         if (!snd_mpu401_devices) {
264 #ifdef MODULE
265                 printk(KERN_ERR "MPU-401 device not found or device busy\n");
266 #endif
267                 snd_mpu401_unregister_all();
268                 return -ENODEV;
269         }
270         return 0;
271 }
272
273 static void __exit alsa_card_mpu401_exit(void)
274 {
275         snd_mpu401_unregister_all();
276 }
277
278 module_init(alsa_card_mpu401_init)
279 module_exit(alsa_card_mpu401_exit)