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1da177e4 LT |
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/moduleparam.h> | |
27 | #include <sound/core.h> | |
28 | #include <sound/mpu401.h> | |
29 | #include <sound/initval.h> | |
30 | ||
31 | MODULE_AUTHOR("Jaroslav Kysela <perex@suse.cz>"); | |
32 | MODULE_DESCRIPTION("MPU-401 UART"); | |
33 | MODULE_LICENSE("GPL"); | |
34 | ||
35 | static int index[SNDRV_CARDS] = {[0 ... (SNDRV_CARDS - 1)] = -2}; /* exclude the first card */ | |
36 | static char *id[SNDRV_CARDS] = SNDRV_DEFAULT_STR; /* ID for this card */ | |
37 | static int enable[SNDRV_CARDS] = SNDRV_DEFAULT_ENABLE; /* Enable this card */ | |
38 | #ifdef CONFIG_PNP | |
39 | static int pnp[SNDRV_CARDS] = {[0 ... (SNDRV_CARDS - 1)] = 1}; | |
40 | #endif | |
41 | static long port[SNDRV_CARDS] = SNDRV_DEFAULT_PORT; /* MPU-401 port number */ | |
42 | static int irq[SNDRV_CARDS] = SNDRV_DEFAULT_IRQ; /* MPU-401 IRQ */ | |
43 | ||
44 | module_param_array(index, int, NULL, 0444); | |
45 | MODULE_PARM_DESC(index, "Index value for MPU-401 device."); | |
46 | module_param_array(id, charp, NULL, 0444); | |
47 | MODULE_PARM_DESC(id, "ID string for MPU-401 device."); | |
48 | module_param_array(enable, bool, NULL, 0444); | |
49 | MODULE_PARM_DESC(enable, "Enable MPU-401 device."); | |
50 | #ifdef CONFIG_PNP | |
51 | module_param_array(pnp, bool, NULL, 0444); | |
52 | MODULE_PARM_DESC(pnp, "PnP detection for MPU-401 device."); | |
53 | #endif | |
54 | module_param_array(port, long, NULL, 0444); | |
55 | MODULE_PARM_DESC(port, "Port # for MPU-401 device."); | |
56 | module_param_array(irq, int, NULL, 0444); | |
57 | MODULE_PARM_DESC(irq, "IRQ # for MPU-401 device."); | |
58 | ||
e1fad17b | 59 | static struct snd_card *snd_mpu401_legacy_cards[SNDRV_CARDS] = SNDRV_DEFAULT_PTR; |
1da177e4 LT |
60 | static int pnp_registered = 0; |
61 | ||
e1fad17b | 62 | static int snd_mpu401_create(int dev, struct snd_card **rcard) |
1da177e4 | 63 | { |
e1fad17b | 64 | struct snd_card *card; |
1da177e4 LT |
65 | int err; |
66 | ||
67 | *rcard = NULL; | |
68 | card = snd_card_new(index[dev], id[dev], THIS_MODULE, 0); | |
69 | if (card == NULL) | |
70 | return -ENOMEM; | |
71 | strcpy(card->driver, "MPU-401 UART"); | |
72 | strcpy(card->shortname, card->driver); | |
73 | sprintf(card->longname, "%s at %#lx, ", card->shortname, port[dev]); | |
74 | if (irq[dev] >= 0) { | |
75 | sprintf(card->longname + strlen(card->longname), "irq %d", irq[dev]); | |
76 | } else { | |
77 | strcat(card->longname, "polled"); | |
78 | } | |
79 | ||
16dab54b TI |
80 | if ((err = snd_mpu401_uart_new(card, 0, |
81 | MPU401_HW_MPU401, | |
82 | port[dev], 0, | |
83 | irq[dev], irq[dev] >= 0 ? SA_INTERRUPT : 0, NULL)) < 0) { | |
1da177e4 | 84 | printk(KERN_ERR "MPU401 not detected at 0x%lx\n", port[dev]); |
16dab54b | 85 | goto _err; |
1da177e4 | 86 | } |
16dab54b TI |
87 | |
88 | if ((err = snd_card_set_generic_dev(card)) < 0) | |
89 | goto _err; | |
90 | ||
91 | if ((err = snd_card_register(card)) < 0) | |
92 | goto _err; | |
93 | ||
1da177e4 LT |
94 | *rcard = card; |
95 | return 0; | |
16dab54b TI |
96 | |
97 | _err: | |
98 | snd_card_free(card); | |
99 | return err; | |
1da177e4 LT |
100 | } |
101 | ||
102 | static int __devinit snd_mpu401_probe(int dev) | |
103 | { | |
104 | if (port[dev] == SNDRV_AUTO_PORT) { | |
105 | snd_printk(KERN_ERR "specify port\n"); | |
106 | return -EINVAL; | |
107 | } | |
108 | if (irq[dev] == SNDRV_AUTO_IRQ) { | |
109 | snd_printk(KERN_ERR "specify or disable IRQ\n"); | |
110 | return -EINVAL; | |
111 | } | |
112 | return snd_mpu401_create(dev, &snd_mpu401_legacy_cards[dev]); | |
113 | } | |
114 | ||
115 | #ifdef CONFIG_PNP | |
116 | ||
117 | #define IO_EXTENT 2 | |
118 | ||
119 | static struct pnp_device_id snd_mpu401_pnpids[] = { | |
120 | { .id = "PNPb006" }, | |
121 | { .id = "" } | |
122 | }; | |
123 | ||
124 | MODULE_DEVICE_TABLE(pnp, snd_mpu401_pnpids); | |
125 | ||
126 | static int __init snd_mpu401_pnp(int dev, struct pnp_dev *device, | |
127 | const struct pnp_device_id *id) | |
128 | { | |
129 | if (!pnp_port_valid(device, 0) || | |
130 | pnp_port_flags(device, 0) & IORESOURCE_DISABLED) { | |
131 | snd_printk(KERN_ERR "no PnP port\n"); | |
132 | return -ENODEV; | |
133 | } | |
134 | if (pnp_port_len(device, 0) < IO_EXTENT) { | |
135 | snd_printk(KERN_ERR "PnP port length is %ld, expected %d\n", | |
136 | pnp_port_len(device, 0), IO_EXTENT); | |
137 | return -ENODEV; | |
138 | } | |
139 | port[dev] = pnp_port_start(device, 0); | |
140 | ||
141 | if (!pnp_irq_valid(device, 0) || | |
142 | pnp_irq_flags(device, 0) & IORESOURCE_DISABLED) { | |
143 | snd_printk(KERN_WARNING "no PnP irq, using polling\n"); | |
144 | irq[dev] = -1; | |
145 | } else { | |
146 | irq[dev] = pnp_irq(device, 0); | |
147 | } | |
148 | return 0; | |
149 | } | |
150 | ||
151 | static int __devinit snd_mpu401_pnp_probe(struct pnp_dev *pnp_dev, | |
152 | const struct pnp_device_id *id) | |
153 | { | |
154 | static int dev; | |
e1fad17b | 155 | struct snd_card *card; |
1da177e4 LT |
156 | int err; |
157 | ||
158 | for ( ; dev < SNDRV_CARDS; ++dev) { | |
159 | if (!enable[dev] || !pnp[dev]) | |
160 | continue; | |
161 | err = snd_mpu401_pnp(dev, pnp_dev, id); | |
162 | if (err < 0) | |
163 | return err; | |
164 | err = snd_mpu401_create(dev, &card); | |
165 | if (err < 0) | |
166 | return err; | |
167 | snd_card_set_dev(card, &pnp_dev->dev); | |
168 | pnp_set_drvdata(pnp_dev, card); | |
169 | ++dev; | |
170 | return 0; | |
171 | } | |
172 | return -ENODEV; | |
173 | } | |
174 | ||
175 | static void __devexit snd_mpu401_pnp_remove(struct pnp_dev *dev) | |
176 | { | |
e1fad17b | 177 | struct snd_card *card = (struct snd_card *) pnp_get_drvdata(dev); |
1da177e4 LT |
178 | |
179 | snd_card_disconnect(card); | |
180 | snd_card_free_in_thread(card); | |
181 | } | |
182 | ||
183 | static struct pnp_driver snd_mpu401_pnp_driver = { | |
184 | .name = "mpu401", | |
185 | .id_table = snd_mpu401_pnpids, | |
186 | .probe = snd_mpu401_pnp_probe, | |
187 | .remove = __devexit_p(snd_mpu401_pnp_remove), | |
188 | }; | |
189 | #else | |
190 | static struct pnp_driver snd_mpu401_pnp_driver; | |
191 | #endif | |
192 | ||
193 | static int __init alsa_card_mpu401_init(void) | |
194 | { | |
195 | int dev, devices = 0; | |
196 | int err; | |
197 | ||
198 | for (dev = 0; dev < SNDRV_CARDS; dev++) { | |
199 | if (!enable[dev]) | |
200 | continue; | |
201 | #ifdef CONFIG_PNP | |
202 | if (pnp[dev]) | |
203 | continue; | |
204 | #endif | |
205 | if (snd_mpu401_probe(dev) >= 0) | |
206 | devices++; | |
207 | } | |
208 | if ((err = pnp_register_driver(&snd_mpu401_pnp_driver)) >= 0) { | |
209 | pnp_registered = 1; | |
210 | devices += err; | |
211 | } | |
212 | ||
213 | if (!devices) { | |
214 | #ifdef MODULE | |
215 | printk(KERN_ERR "MPU-401 device not found or device busy\n"); | |
216 | #endif | |
217 | if (pnp_registered) | |
218 | pnp_unregister_driver(&snd_mpu401_pnp_driver); | |
219 | return -ENODEV; | |
220 | } | |
221 | return 0; | |
222 | } | |
223 | ||
224 | static void __exit alsa_card_mpu401_exit(void) | |
225 | { | |
226 | int idx; | |
227 | ||
228 | if (pnp_registered) | |
229 | pnp_unregister_driver(&snd_mpu401_pnp_driver); | |
230 | for (idx = 0; idx < SNDRV_CARDS; idx++) | |
231 | snd_card_free(snd_mpu401_legacy_cards[idx]); | |
232 | } | |
233 | ||
234 | module_init(alsa_card_mpu401_init) | |
235 | module_exit(alsa_card_mpu401_exit) |