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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> | |
b3fe9512 TI |
26 | #include <linux/err.h> |
27 | #include <linux/platform_device.h> | |
1da177e4 LT |
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 | ||
f7a9275d | 61 | static struct platform_device *platform_devices[SNDRV_CARDS]; |
f301ae6a BH |
62 | static int pnp_registered; |
63 | static unsigned int snd_mpu401_devices; | |
1da177e4 | 64 | |
e1fad17b | 65 | static int snd_mpu401_create(int dev, struct snd_card **rcard) |
1da177e4 | 66 | { |
e1fad17b | 67 | struct snd_card *card; |
1da177e4 LT |
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 | ||
16dab54b TI |
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) { | |
1da177e4 | 87 | printk(KERN_ERR "MPU401 not detected at 0x%lx\n", port[dev]); |
16dab54b | 88 | goto _err; |
1da177e4 | 89 | } |
16dab54b | 90 | |
1da177e4 LT |
91 | *rcard = card; |
92 | return 0; | |
16dab54b TI |
93 | |
94 | _err: | |
95 | snd_card_free(card); | |
96 | return err; | |
1da177e4 LT |
97 | } |
98 | ||
b3fe9512 | 99 | static int __devinit snd_mpu401_probe(struct platform_device *devptr) |
1da177e4 | 100 | { |
b3fe9512 TI |
101 | int dev = devptr->id; |
102 | int err; | |
103 | struct snd_card *card; | |
104 | ||
1da177e4 LT |
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 | } | |
b3fe9512 TI |
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; | |
1da177e4 LT |
123 | } |
124 | ||
b3fe9512 TI |
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 | ||
1da177e4 LT |
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 __init 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; | |
e1fad17b | 183 | struct snd_card *card; |
1da177e4 LT |
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; | |
b3fe9512 TI |
195 | if ((err = snd_card_register(card)) < 0) { |
196 | snd_card_free(card); | |
197 | return err; | |
198 | } | |
1da177e4 LT |
199 | snd_card_set_dev(card, &pnp_dev->dev); |
200 | pnp_set_drvdata(pnp_dev, card); | |
f301ae6a | 201 | snd_mpu401_devices++; |
1da177e4 LT |
202 | ++dev; |
203 | return 0; | |
204 | } | |
205 | return -ENODEV; | |
206 | } | |
207 | ||
208 | static void __devexit snd_mpu401_pnp_remove(struct pnp_dev *dev) | |
209 | { | |
e1fad17b | 210 | struct snd_card *card = (struct snd_card *) pnp_get_drvdata(dev); |
1da177e4 LT |
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 | ||
f7a9275d CL |
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 | ||
1da177e4 LT |
237 | static int __init alsa_card_mpu401_init(void) |
238 | { | |
f301ae6a | 239 | int i, err; |
1da177e4 | 240 | |
b3fe9512 TI |
241 | if ((err = platform_driver_register(&snd_mpu401_driver)) < 0) |
242 | return err; | |
243 | ||
8278ca8f | 244 | for (i = 0; i < SNDRV_CARDS; i++) { |
b3fe9512 | 245 | struct platform_device *device; |
8278ca8f TI |
246 | if (! enable[i]) |
247 | continue; | |
1da177e4 | 248 | #ifdef CONFIG_PNP |
b3fe9512 | 249 | if (pnp[i]) |
1da177e4 LT |
250 | continue; |
251 | #endif | |
b3fe9512 TI |
252 | device = platform_device_register_simple(SND_MPU401_DRIVER, |
253 | i, NULL, 0); | |
254 | if (IS_ERR(device)) { | |
255 | err = PTR_ERR(device); | |
256 | goto errout; | |
257 | } | |
f7a9275d | 258 | platform_devices[i] = device; |
f301ae6a | 259 | snd_mpu401_devices++; |
1da177e4 | 260 | } |
f301ae6a BH |
261 | err = pnp_register_driver(&snd_mpu401_pnp_driver); |
262 | if (!err) | |
1da177e4 | 263 | pnp_registered = 1; |
1da177e4 | 264 | |
f301ae6a | 265 | if (!snd_mpu401_devices) { |
1da177e4 LT |
266 | #ifdef MODULE |
267 | printk(KERN_ERR "MPU-401 device not found or device busy\n"); | |
268 | #endif | |
b3fe9512 TI |
269 | err = -ENODEV; |
270 | goto errout; | |
1da177e4 LT |
271 | } |
272 | return 0; | |
b3fe9512 TI |
273 | |
274 | errout: | |
f7a9275d | 275 | snd_mpu401_unregister_all(); |
b3fe9512 | 276 | return err; |
1da177e4 LT |
277 | } |
278 | ||
279 | static void __exit alsa_card_mpu401_exit(void) | |
280 | { | |
f7a9275d | 281 | snd_mpu401_unregister_all(); |
1da177e4 LT |
282 | } |
283 | ||
284 | module_init(alsa_card_mpu401_init) | |
285 | module_exit(alsa_card_mpu401_exit) |