a253a14e6a45be6ea18e8b982268c855337eefba
[linux-2.6.git] / 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;
47         int i = device->id;
48
49         if (port[i] == SNDRV_AUTO_PORT) {
50                 snd_printk(KERN_ERR DRV_NAME ": please specify port\n");
51                 error = -EINVAL;
52                 goto out0;
53         }
54
55         card = snd_card_new(index[i], id[i], THIS_MODULE, 0);
56         if (!card) {
57                 snd_printk(KERN_ERR DRV_NAME ": could not create card\n");
58                 error = -EINVAL;
59                 goto out0;
60         }
61
62         card->private_data = request_region(port[i], 4, CRD_NAME);
63         if (!card->private_data) {
64                 snd_printk(KERN_ERR DRV_NAME ": could not grab ports\n");
65                 error = -EBUSY;
66                 goto out1;
67         }
68         card->private_free = snd_adlib_free;
69
70         error = snd_opl3_create(card, port[i], port[i] + 2, OPL3_HW_AUTO, 1, &opl3);
71         if (error < 0) {
72                 snd_printk(KERN_ERR DRV_NAME ": could not create OPL\n");
73                 goto out1;
74         }
75
76         error = snd_opl3_hwdep_new(opl3, 0, 0, NULL);
77         if (error < 0) {
78                 snd_printk(KERN_ERR DRV_NAME ": could not create FM\n");
79                 goto out1;
80         }
81
82         strcpy(card->driver, DRV_NAME);
83         strcpy(card->shortname, CRD_NAME);
84         sprintf(card->longname, CRD_NAME " at %#lx", port[i]);
85
86         snd_card_set_dev(card, &device->dev);
87
88         error = snd_card_register(card);
89         if (error < 0) {
90                 snd_printk(KERN_ERR DRV_NAME ": could not register card\n");
91                 goto out1;
92         }
93
94         platform_set_drvdata(device, card);
95         return 0;
96
97 out1:   snd_card_free(card);
98  out0:  error = -EINVAL; /* FIXME: should be the original error code */
99         return error;
100 }
101
102 static int __devexit snd_adlib_remove(struct platform_device *device)
103 {
104         snd_card_free(platform_get_drvdata(device));
105         platform_set_drvdata(device, NULL);
106         return 0;
107 }
108
109 static struct platform_driver snd_adlib_driver = {
110         .probe          = snd_adlib_probe,
111         .remove         = __devexit_p(snd_adlib_remove),
112
113         .driver         = {
114                 .name   = DRV_NAME
115         }
116 };
117
118 static int __init alsa_card_adlib_init(void)
119 {
120         int i, cards;
121
122         if (platform_driver_register(&snd_adlib_driver) < 0) {
123                 snd_printk(KERN_ERR DRV_NAME ": could not register driver\n");
124                 return -ENODEV;
125         }
126
127         for (cards = 0, i = 0; i < SNDRV_CARDS; i++) {
128                 struct platform_device *device;
129
130                 if (!enable[i])
131                         continue;
132
133                 device = platform_device_register_simple(DRV_NAME, i, NULL, 0);
134                 if (IS_ERR(device))
135                         continue;
136
137                 devices[i] = device;
138                 cards++;
139         }
140
141         if (!cards) {
142 #ifdef MODULE
143                 printk(KERN_ERR CRD_NAME " soundcard not found or device busy\n");
144 #endif
145                 platform_driver_unregister(&snd_adlib_driver);
146                 return -ENODEV;
147         }
148         return 0;
149 }
150
151 static void __exit alsa_card_adlib_exit(void)
152 {
153         int i;
154
155         for (i = 0; i < SNDRV_CARDS; i++)
156                 platform_device_unregister(devices[i]);
157         platform_driver_unregister(&snd_adlib_driver);
158 }
159
160 module_init(alsa_card_adlib_init);
161 module_exit(alsa_card_adlib_exit);