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
16MODULE_DESCRIPTION(CRD_NAME);
17MODULE_AUTHOR("Rene Herman");
18MODULE_LICENSE("GPL");
19
20static int index[SNDRV_CARDS] = SNDRV_DEFAULT_IDX;
21static char *id[SNDRV_CARDS] = SNDRV_DEFAULT_STR;
22static bool enable[SNDRV_CARDS] = SNDRV_DEFAULT_ENABLE;
23static long port[SNDRV_CARDS] = SNDRV_DEFAULT_PORT;
24
25module_param_array(index, int, NULL, 0444);
26MODULE_PARM_DESC(index, "Index value for " CRD_NAME " soundcard.");
27module_param_array(id, charp, NULL, 0444);
28MODULE_PARM_DESC(id, "ID string for " CRD_NAME " soundcard.");
29module_param_array(enable, bool, NULL, 0444);
30MODULE_PARM_DESC(enable, "Enable " CRD_NAME " soundcard.");
31module_param_hw_array(port, long, ioport, NULL, 0444);
32MODULE_PARM_DESC(port, "Port # for " CRD_NAME " driver.");
33
34static 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
46static 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(parent: dev, idx: index[n], xid: id[n], THIS_MODULE, extra_size: 0, card_ret: &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(p: card->driver, DEV_NAME);
65 strcpy(p: card->shortname, CRD_NAME);
66 sprintf(buf: card->longname, CRD_NAME " at %#lx", port[n]);
67
68 error = snd_opl3_create(card, l_port: port[n], r_port: port[n] + 2, OPL3_HW_AUTO, integrated: 1, opl3: &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, device: 0, seq_device: 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, data: card);
87 return 0;
88}
89
90static 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
99module_isa_driver(snd_adlib_driver, SNDRV_CARDS);
100

source code of linux/sound/isa/adlib.c