1/*
2 * AdLib FM card driver.
3 */
4
5#include <linux/kernel.h>
6#include <linux/module.h>
7#include <linux/isa.h>
8#include <sound/core.h>
9#include <sound/initval.h>
10#include <sound/opl3.h>
11
12#define CRD_NAME "AdLib FM"
13#define DEV_NAME "adlib"
14
15MODULE_DESCRIPTION(CRD_NAME);
16MODULE_AUTHOR("Rene Herman");
17MODULE_LICENSE("GPL");
18
19static int index[SNDRV_CARDS] = SNDRV_DEFAULT_IDX;
20static char *id[SNDRV_CARDS] = SNDRV_DEFAULT_STR;
21static bool enable[SNDRV_CARDS] = SNDRV_DEFAULT_ENABLE;
22static long port[SNDRV_CARDS] = SNDRV_DEFAULT_PORT;
23
24module_param_array(index, int, NULL, 0444);
25MODULE_PARM_DESC(index, "Index value for " CRD_NAME " soundcard.");
26module_param_array(id, charp, NULL, 0444);
27MODULE_PARM_DESC(id, "ID string for " CRD_NAME " soundcard.");
28module_param_array(enable, bool, NULL, 0444);
29MODULE_PARM_DESC(enable, "Enable " CRD_NAME " soundcard.");
30module_param_array(port, long, NULL, 0444);
31MODULE_PARM_DESC(port, "Port # for " CRD_NAME " driver.");
32
33static int snd_adlib_match(struct device *dev, unsigned int n)
34{
35	if (!enable[n])
36		return 0;
37
38	if (port[n] == SNDRV_AUTO_PORT) {
39		dev_err(dev, "please specify port\n");
40		return 0;
41	}
42	return 1;
43}
44
45static void snd_adlib_free(struct snd_card *card)
46{
47	release_and_free_resource(card->private_data);
48}
49
50static int snd_adlib_probe(struct device *dev, unsigned int n)
51{
52	struct snd_card *card;
53	struct snd_opl3 *opl3;
54	int error;
55
56	error = snd_card_new(dev, index[n], id[n], THIS_MODULE, 0, &card);
57	if (error < 0) {
58		dev_err(dev, "could not create card\n");
59		return error;
60	}
61
62	card->private_data = request_region(port[n], 4, CRD_NAME);
63	if (!card->private_data) {
64		dev_err(dev, "could not grab ports\n");
65		error = -EBUSY;
66		goto out;
67	}
68	card->private_free = snd_adlib_free;
69
70	strcpy(card->driver, DEV_NAME);
71	strcpy(card->shortname, CRD_NAME);
72	sprintf(card->longname, CRD_NAME " at %#lx", port[n]);
73
74	error = snd_opl3_create(card, port[n], port[n] + 2, OPL3_HW_AUTO, 1, &opl3);
75	if (error < 0) {
76		dev_err(dev, "could not create OPL\n");
77		goto out;
78	}
79
80	error = snd_opl3_hwdep_new(opl3, 0, 0, NULL);
81	if (error < 0) {
82		dev_err(dev, "could not create FM\n");
83		goto out;
84	}
85
86	error = snd_card_register(card);
87	if (error < 0) {
88		dev_err(dev, "could not register card\n");
89		goto out;
90	}
91
92	dev_set_drvdata(dev, card);
93	return 0;
94
95out:	snd_card_free(card);
96	return error;
97}
98
99static int snd_adlib_remove(struct device *dev, unsigned int n)
100{
101	snd_card_free(dev_get_drvdata(dev));
102	return 0;
103}
104
105static struct isa_driver snd_adlib_driver = {
106	.match		= snd_adlib_match,
107	.probe		= snd_adlib_probe,
108	.remove		= snd_adlib_remove,
109
110	.driver		= {
111		.name	= DEV_NAME
112	}
113};
114
115static int __init alsa_card_adlib_init(void)
116{
117	return isa_register_driver(&snd_adlib_driver, SNDRV_CARDS);
118}
119
120static void __exit alsa_card_adlib_exit(void)
121{
122	isa_unregister_driver(&snd_adlib_driver);
123}
124
125module_init(alsa_card_adlib_init);
126module_exit(alsa_card_adlib_exit);
127