1 // SPDX-License-Identifier: GPL-2.0-only
2 /*
3 * AdLib FM card driver.
4 */
5
6 #include <linux/kernel.h>
7 #include <linux/module.h>
8 #include <linux/isa.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 DEV_NAME "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 bool 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_hw_array(port, long, ioport, NULL, 0444);
32 MODULE_PARM_DESC(port, "Port # for " CRD_NAME " driver.");
33
snd_adlib_match(struct device * dev,unsigned int n)34 static int snd_adlib_match(struct device *dev, unsigned int n)
35 {
36 if (!enable[n])
37 return 0;
38
39 if (port[n] == SNDRV_AUTO_PORT) {
40 dev_err(dev, "please specify port\n");
41 return 0;
42 }
43 return 1;
44 }
45
snd_adlib_probe(struct device * dev,unsigned int n)46 static int snd_adlib_probe(struct device *dev, unsigned int n)
47 {
48 struct snd_card *card;
49 struct snd_opl3 *opl3;
50 int error;
51
52 error = snd_devm_card_new(dev, index[n], id[n], THIS_MODULE, 0, &card);
53 if (error < 0) {
54 dev_err(dev, "could not create card\n");
55 return error;
56 }
57
58 card->private_data = devm_request_region(dev, port[n], 4, CRD_NAME);
59 if (!card->private_data) {
60 dev_err(dev, "could not grab ports\n");
61 return -EBUSY;
62 }
63
64 strcpy(card->driver, DEV_NAME);
65 strcpy(card->shortname, CRD_NAME);
66 sprintf(card->longname, CRD_NAME " at %#lx", port[n]);
67
68 error = snd_opl3_create(card, port[n], port[n] + 2, OPL3_HW_AUTO, 1, &opl3);
69 if (error < 0) {
70 dev_err(dev, "could not create OPL\n");
71 return error;
72 }
73
74 error = snd_opl3_hwdep_new(opl3, 0, 0, NULL);
75 if (error < 0) {
76 dev_err(dev, "could not create FM\n");
77 return error;
78 }
79
80 error = snd_card_register(card);
81 if (error < 0) {
82 dev_err(dev, "could not register card\n");
83 return error;
84 }
85
86 dev_set_drvdata(dev, card);
87 return 0;
88 }
89
90 static struct isa_driver snd_adlib_driver = {
91 .match = snd_adlib_match,
92 .probe = snd_adlib_probe,
93
94 .driver = {
95 .name = DEV_NAME
96 }
97 };
98
99 module_isa_driver(snd_adlib_driver, SNDRV_CARDS);
100