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1da177e4 LT |
1 | /* |
2 | * Driver for generic MPU-401 boards (UART mode only) | |
c1017a4c | 3 | * Copyright (c) by Jaroslav Kysela <perex@perex.cz> |
1da177e4 LT |
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 | ||
c1017a4c | 33 | MODULE_AUTHOR("Jaroslav Kysela <perex@perex.cz>"); |
1da177e4 LT |
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 */ | |
8f7ba051 | 45 | static int uart_enter[SNDRV_CARDS] = {[0 ... (SNDRV_CARDS - 1)] = 1}; |
1da177e4 LT |
46 | |
47 | module_param_array(index, int, NULL, 0444); | |
48 | MODULE_PARM_DESC(index, "Index value for MPU-401 device."); | |
49 | module_param_array(id, charp, NULL, 0444); | |
50 | MODULE_PARM_DESC(id, "ID string for MPU-401 device."); | |
51 | module_param_array(enable, bool, NULL, 0444); | |
52 | MODULE_PARM_DESC(enable, "Enable MPU-401 device."); | |
53 | #ifdef CONFIG_PNP | |
54 | module_param_array(pnp, bool, NULL, 0444); | |
55 | MODULE_PARM_DESC(pnp, "PnP detection for MPU-401 device."); | |
56 | #endif | |
57 | module_param_array(port, long, NULL, 0444); | |
58 | MODULE_PARM_DESC(port, "Port # for MPU-401 device."); | |
59 | module_param_array(irq, int, NULL, 0444); | |
60 | MODULE_PARM_DESC(irq, "IRQ # for MPU-401 device."); | |
8f7ba051 TI |
61 | module_param_array(uart_enter, bool, NULL, 0444); |
62 | MODULE_PARM_DESC(uart_enter, "Issue UART_ENTER command at open."); | |
1da177e4 | 63 | |
f7a9275d | 64 | static struct platform_device *platform_devices[SNDRV_CARDS]; |
f301ae6a BH |
65 | static int pnp_registered; |
66 | static unsigned int snd_mpu401_devices; | |
1da177e4 | 67 | |
e1fad17b | 68 | static int snd_mpu401_create(int dev, struct snd_card **rcard) |
1da177e4 | 69 | { |
e1fad17b | 70 | struct snd_card *card; |
1da177e4 LT |
71 | int err; |
72 | ||
c1099fcb CL |
73 | if (!uart_enter[dev]) |
74 | snd_printk(KERN_ERR "the uart_enter option is obsolete; remove it\n"); | |
75 | ||
1da177e4 LT |
76 | *rcard = NULL; |
77 | card = snd_card_new(index[dev], id[dev], THIS_MODULE, 0); | |
78 | if (card == NULL) | |
79 | return -ENOMEM; | |
80 | strcpy(card->driver, "MPU-401 UART"); | |
81 | strcpy(card->shortname, card->driver); | |
82 | sprintf(card->longname, "%s at %#lx, ", card->shortname, port[dev]); | |
83 | if (irq[dev] >= 0) { | |
84 | sprintf(card->longname + strlen(card->longname), "irq %d", irq[dev]); | |
85 | } else { | |
86 | strcat(card->longname, "polled"); | |
87 | } | |
88 | ||
c1099fcb | 89 | err = snd_mpu401_uart_new(card, 0, MPU401_HW_MPU401, port[dev], 0, |
8f7ba051 TI |
90 | irq[dev], irq[dev] >= 0 ? IRQF_DISABLED : 0, |
91 | NULL); | |
92 | if (err < 0) { | |
1da177e4 | 93 | printk(KERN_ERR "MPU401 not detected at 0x%lx\n", port[dev]); |
16dab54b | 94 | goto _err; |
1da177e4 | 95 | } |
16dab54b | 96 | |
1da177e4 LT |
97 | *rcard = card; |
98 | return 0; | |
16dab54b TI |
99 | |
100 | _err: | |
101 | snd_card_free(card); | |
102 | return err; | |
1da177e4 LT |
103 | } |
104 | ||
b3fe9512 | 105 | static int __devinit snd_mpu401_probe(struct platform_device *devptr) |
1da177e4 | 106 | { |
b3fe9512 TI |
107 | int dev = devptr->id; |
108 | int err; | |
109 | struct snd_card *card; | |
110 | ||
1da177e4 LT |
111 | if (port[dev] == SNDRV_AUTO_PORT) { |
112 | snd_printk(KERN_ERR "specify port\n"); | |
113 | return -EINVAL; | |
114 | } | |
115 | if (irq[dev] == SNDRV_AUTO_IRQ) { | |
116 | snd_printk(KERN_ERR "specify or disable IRQ\n"); | |
117 | return -EINVAL; | |
118 | } | |
b3fe9512 TI |
119 | err = snd_mpu401_create(dev, &card); |
120 | if (err < 0) | |
121 | return err; | |
122 | snd_card_set_dev(card, &devptr->dev); | |
123 | if ((err = snd_card_register(card)) < 0) { | |
124 | snd_card_free(card); | |
125 | return err; | |
126 | } | |
127 | platform_set_drvdata(devptr, card); | |
128 | return 0; | |
1da177e4 LT |
129 | } |
130 | ||
b3fe9512 TI |
131 | static int __devexit snd_mpu401_remove(struct platform_device *devptr) |
132 | { | |
133 | snd_card_free(platform_get_drvdata(devptr)); | |
134 | platform_set_drvdata(devptr, NULL); | |
135 | return 0; | |
136 | } | |
137 | ||
138 | #define SND_MPU401_DRIVER "snd_mpu401" | |
139 | ||
140 | static struct platform_driver snd_mpu401_driver = { | |
141 | .probe = snd_mpu401_probe, | |
142 | .remove = __devexit_p(snd_mpu401_remove), | |
143 | .driver = { | |
144 | .name = SND_MPU401_DRIVER | |
145 | }, | |
146 | }; | |
147 | ||
148 | ||
1da177e4 LT |
149 | #ifdef CONFIG_PNP |
150 | ||
151 | #define IO_EXTENT 2 | |
152 | ||
153 | static struct pnp_device_id snd_mpu401_pnpids[] = { | |
154 | { .id = "PNPb006" }, | |
155 | { .id = "" } | |
156 | }; | |
157 | ||
158 | MODULE_DEVICE_TABLE(pnp, snd_mpu401_pnpids); | |
159 | ||
fad43488 | 160 | static int __devinit snd_mpu401_pnp(int dev, struct pnp_dev *device, |
1da177e4 LT |
161 | const struct pnp_device_id *id) |
162 | { | |
163 | if (!pnp_port_valid(device, 0) || | |
164 | pnp_port_flags(device, 0) & IORESOURCE_DISABLED) { | |
165 | snd_printk(KERN_ERR "no PnP port\n"); | |
166 | return -ENODEV; | |
167 | } | |
168 | if (pnp_port_len(device, 0) < IO_EXTENT) { | |
aa0a2ddc GKH |
169 | snd_printk(KERN_ERR "PnP port length is %llu, expected %d\n", |
170 | (unsigned long long)pnp_port_len(device, 0), | |
171 | IO_EXTENT); | |
1da177e4 LT |
172 | return -ENODEV; |
173 | } | |
174 | port[dev] = pnp_port_start(device, 0); | |
175 | ||
176 | if (!pnp_irq_valid(device, 0) || | |
177 | pnp_irq_flags(device, 0) & IORESOURCE_DISABLED) { | |
178 | snd_printk(KERN_WARNING "no PnP irq, using polling\n"); | |
179 | irq[dev] = -1; | |
180 | } else { | |
181 | irq[dev] = pnp_irq(device, 0); | |
182 | } | |
183 | return 0; | |
184 | } | |
185 | ||
186 | static int __devinit snd_mpu401_pnp_probe(struct pnp_dev *pnp_dev, | |
187 | const struct pnp_device_id *id) | |
188 | { | |
189 | static int dev; | |
e1fad17b | 190 | struct snd_card *card; |
1da177e4 LT |
191 | int err; |
192 | ||
193 | for ( ; dev < SNDRV_CARDS; ++dev) { | |
194 | if (!enable[dev] || !pnp[dev]) | |
195 | continue; | |
196 | err = snd_mpu401_pnp(dev, pnp_dev, id); | |
197 | if (err < 0) | |
198 | return err; | |
199 | err = snd_mpu401_create(dev, &card); | |
200 | if (err < 0) | |
201 | return err; | |
b3fe9512 TI |
202 | if ((err = snd_card_register(card)) < 0) { |
203 | snd_card_free(card); | |
204 | return err; | |
205 | } | |
1da177e4 LT |
206 | snd_card_set_dev(card, &pnp_dev->dev); |
207 | pnp_set_drvdata(pnp_dev, card); | |
f301ae6a | 208 | snd_mpu401_devices++; |
1da177e4 LT |
209 | ++dev; |
210 | return 0; | |
211 | } | |
212 | return -ENODEV; | |
213 | } | |
214 | ||
215 | static void __devexit snd_mpu401_pnp_remove(struct pnp_dev *dev) | |
216 | { | |
e1fad17b | 217 | struct snd_card *card = (struct snd_card *) pnp_get_drvdata(dev); |
1da177e4 LT |
218 | |
219 | snd_card_disconnect(card); | |
2b29b13c | 220 | snd_card_free_when_closed(card); |
1da177e4 LT |
221 | } |
222 | ||
223 | static struct pnp_driver snd_mpu401_pnp_driver = { | |
224 | .name = "mpu401", | |
225 | .id_table = snd_mpu401_pnpids, | |
226 | .probe = snd_mpu401_pnp_probe, | |
227 | .remove = __devexit_p(snd_mpu401_pnp_remove), | |
228 | }; | |
229 | #else | |
230 | static struct pnp_driver snd_mpu401_pnp_driver; | |
231 | #endif | |
232 | ||
c12aad6e | 233 | static void snd_mpu401_unregister_all(void) |
f7a9275d CL |
234 | { |
235 | int i; | |
236 | ||
237 | if (pnp_registered) | |
238 | pnp_unregister_driver(&snd_mpu401_pnp_driver); | |
239 | for (i = 0; i < ARRAY_SIZE(platform_devices); ++i) | |
240 | platform_device_unregister(platform_devices[i]); | |
241 | platform_driver_unregister(&snd_mpu401_driver); | |
242 | } | |
243 | ||
1da177e4 LT |
244 | static int __init alsa_card_mpu401_init(void) |
245 | { | |
f301ae6a | 246 | int i, err; |
1da177e4 | 247 | |
b3fe9512 TI |
248 | if ((err = platform_driver_register(&snd_mpu401_driver)) < 0) |
249 | return err; | |
250 | ||
8278ca8f | 251 | for (i = 0; i < SNDRV_CARDS; i++) { |
b3fe9512 | 252 | struct platform_device *device; |
8278ca8f TI |
253 | if (! enable[i]) |
254 | continue; | |
1da177e4 | 255 | #ifdef CONFIG_PNP |
b3fe9512 | 256 | if (pnp[i]) |
1da177e4 LT |
257 | continue; |
258 | #endif | |
b3fe9512 TI |
259 | device = platform_device_register_simple(SND_MPU401_DRIVER, |
260 | i, NULL, 0); | |
a182ee98 RH |
261 | if (IS_ERR(device)) |
262 | continue; | |
7152447d RH |
263 | if (!platform_get_drvdata(device)) { |
264 | platform_device_unregister(device); | |
265 | continue; | |
266 | } | |
f7a9275d | 267 | platform_devices[i] = device; |
f301ae6a | 268 | snd_mpu401_devices++; |
1da177e4 | 269 | } |
f301ae6a BH |
270 | err = pnp_register_driver(&snd_mpu401_pnp_driver); |
271 | if (!err) | |
1da177e4 | 272 | pnp_registered = 1; |
1da177e4 | 273 | |
f301ae6a | 274 | if (!snd_mpu401_devices) { |
1da177e4 LT |
275 | #ifdef MODULE |
276 | printk(KERN_ERR "MPU-401 device not found or device busy\n"); | |
277 | #endif | |
a182ee98 RH |
278 | snd_mpu401_unregister_all(); |
279 | return -ENODEV; | |
1da177e4 LT |
280 | } |
281 | return 0; | |
282 | } | |
283 | ||
284 | static void __exit alsa_card_mpu401_exit(void) | |
285 | { | |
f7a9275d | 286 | snd_mpu401_unregister_all(); |
1da177e4 LT |
287 | } |
288 | ||
289 | module_init(alsa_card_mpu401_init) | |
290 | module_exit(alsa_card_mpu401_exit) |