Merge rsync://rsync.kernel.org/pub/scm/linux/kernel/git/torvalds/linux-2.6
[linux-2.6] / sound / isa / adlib.c
1 /*
2  * AdLib FM card driver.
3  */
4
5 #include <sound/driver.h>
6 #include <linux/kernel.h>
7 #include <linux/module.h>
8 #include <linux/platform_device.h>
9 #include <sound/core.h>
10 #include <sound/initval.h>
11 #include <sound/opl3.h>
12
13 #define CRD_NAME "AdLib FM"
14 #define DRV_NAME "snd_adlib"
15
16 MODULE_DESCRIPTION(CRD_NAME);
17 MODULE_AUTHOR("Rene Herman");
18 MODULE_LICENSE("GPL");
19
20 static int index[SNDRV_CARDS] = SNDRV_DEFAULT_IDX;
21 static char *id[SNDRV_CARDS] = SNDRV_DEFAULT_STR;
22 static int enable[SNDRV_CARDS] = SNDRV_DEFAULT_ENABLE;
23 static long port[SNDRV_CARDS] = SNDRV_DEFAULT_PORT;
24
25 module_param_array(index, int, NULL, 0444);
26 MODULE_PARM_DESC(index, "Index value for " CRD_NAME " soundcard.");
27 module_param_array(id, charp, NULL, 0444);
28 MODULE_PARM_DESC(id, "ID string for " CRD_NAME " soundcard.");
29 module_param_array(enable, bool, NULL, 0444);
30 MODULE_PARM_DESC(enable, "Enable " CRD_NAME " soundcard.");
31 module_param_array(port, long, NULL, 0444);
32 MODULE_PARM_DESC(port, "Port # for " CRD_NAME " driver.");
33
34 static struct platform_device *devices[SNDRV_CARDS];
35
36 static void snd_adlib_free(struct snd_card *card)
37 {
38         release_and_free_resource(card->private_data);
39 }
40
41 static int __devinit snd_adlib_probe(struct platform_device *device)
42 {
43         struct snd_card *card;
44         struct snd_opl3 *opl3;
45
46         int error, i = device->id;
47
48         if (port[i] == SNDRV_AUTO_PORT) {
49                 snd_printk(KERN_ERR DRV_NAME ": please specify port\n");
50                 error = -EINVAL;
51                 goto out0;
52         }
53
54         card = snd_card_new(index[i], id[i], THIS_MODULE, 0);
55         if (!card) {
56                 snd_printk(KERN_ERR DRV_NAME ": could not create card\n");
57                 error = -EINVAL;
58                 goto out0;
59         }
60
61         card->private_data = request_region(port[i], 4, CRD_NAME);
62         if (!card->private_data) {
63                 snd_printk(KERN_ERR DRV_NAME ": could not grab ports\n");
64                 error = -EBUSY;
65                 goto out1;
66         }
67         card->private_free = snd_adlib_free;
68
69         error = snd_opl3_create(card, port[i], port[i] + 2, OPL3_HW_AUTO, 1, &opl3);
70         if (error < 0) {
71                 snd_printk(KERN_ERR DRV_NAME ": could not create OPL\n");
72                 goto out1;
73         }
74
75         error = snd_opl3_hwdep_new(opl3, 0, 0, NULL);
76         if (error < 0) {
77                 snd_printk(KERN_ERR DRV_NAME ": could not create FM\n");
78                 goto out1;
79         }
80
81         strcpy(card->driver, DRV_NAME);
82         strcpy(card->shortname, CRD_NAME);
83         sprintf(card->longname, CRD_NAME " at %#lx", port[i]);
84
85         snd_card_set_dev(card, &device->dev);
86
87         error = snd_card_register(card);
88         if (error < 0) {
89                 snd_printk(KERN_ERR DRV_NAME ": could not register card\n");
90                 goto out1;
91         }
92
93         platform_set_drvdata(device, card);
94         return 0;
95
96 out1:   snd_card_free(card);
97 out0:   return error;
98 }
99
100 static int __devexit snd_adlib_remove(struct platform_device *device)
101 {
102         snd_card_free(platform_get_drvdata(device));
103         platform_set_drvdata(device, NULL);
104         return 0;
105 }
106
107 static struct platform_driver snd_adlib_driver = {
108         .probe          = snd_adlib_probe,
109         .remove         = __devexit_p(snd_adlib_remove),
110
111         .driver         = {
112                 .name   = DRV_NAME
113         }
114 };
115
116 static int __init alsa_card_adlib_init(void)
117 {
118         int i, cards;
119
120         if (platform_driver_register(&snd_adlib_driver) < 0) {
121                 snd_printk(KERN_ERR DRV_NAME ": could not register driver\n");
122                 return -ENODEV;
123         }
124
125         for (cards = 0, i = 0; i < SNDRV_CARDS; i++) {
126                 struct platform_device *device;
127
128                 if (!enable[i])
129                         continue;
130
131                 device = platform_device_register_simple(DRV_NAME, i, NULL, 0);
132                 if (IS_ERR(device))
133                         continue;
134
135                 if (!platform_get_drvdata(device)) {
136                         platform_device_unregister(device);
137                         continue;
138                 }
139
140                 devices[i] = device;
141                 cards++;
142         }
143
144         if (!cards) {
145 #ifdef MODULE
146                 printk(KERN_ERR CRD_NAME " soundcard not found or device busy\n");
147 #endif
148                 platform_driver_unregister(&snd_adlib_driver);
149                 return -ENODEV;
150         }
151         return 0;
152 }
153
154 static void __exit alsa_card_adlib_exit(void)
155 {
156         int i;
157
158         for (i = 0; i < SNDRV_CARDS; i++)
159                 platform_device_unregister(devices[i]);
160         platform_driver_unregister(&snd_adlib_driver);
161 }
162
163 module_init(alsa_card_adlib_init);
164 module_exit(alsa_card_adlib_exit);