| 1 | // SPDX-License-Identifier: GPL-2.0-only
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| 2 | /*
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| 3 | * AdLib FM card driver.
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| 4 | */
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| 5 |
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| 6 | #include <linux/kernel.h>
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| 7 | #include <linux/module.h>
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| 8 | #include <linux/isa.h>
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| 9 | #include <sound/core.h>
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| 10 | #include <sound/initval.h>
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| 11 | #include <sound/opl3.h>
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| 12 |
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| 13 | #define CRD_NAME "AdLib FM"
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| 14 | #define DEV_NAME "adlib"
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| 15 |
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| 16 | MODULE_DESCRIPTION(CRD_NAME);
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| 17 | MODULE_AUTHOR("Rene Herman");
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| 18 | MODULE_LICENSE("GPL");
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| 19 |
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| 20 | static int index[SNDRV_CARDS] = SNDRV_DEFAULT_IDX;
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| 21 | static char *id[SNDRV_CARDS] = SNDRV_DEFAULT_STR;
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| 22 | static bool enable[SNDRV_CARDS] = SNDRV_DEFAULT_ENABLE;
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| 23 | static long port[SNDRV_CARDS] = SNDRV_DEFAULT_PORT;
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| 24 |
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| 25 | module_param_array(index, int, NULL, 0444);
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| 26 | MODULE_PARM_DESC(index, "Index value for " CRD_NAME " soundcard.");
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| 27 | module_param_array(id, charp, NULL, 0444);
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| 28 | MODULE_PARM_DESC(id, "ID string for " CRD_NAME " soundcard.");
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| 29 | module_param_array(enable, bool, NULL, 0444);
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| 30 | MODULE_PARM_DESC(enable, "Enable " CRD_NAME " soundcard.");
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| 31 | module_param_hw_array(port, long, ioport, NULL, 0444);
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| 32 | MODULE_PARM_DESC(port, "Port # for " CRD_NAME " driver.");
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| 33 |
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| 34 | static int snd_adlib_match(struct device *dev, unsigned int n)
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| 35 | {
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| 36 | if (!enable[n])
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| 37 | return 0;
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| 38 |
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| 39 | if (port[n] == SNDRV_AUTO_PORT) {
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| 40 | dev_err(dev, "please specify port\n");
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| 41 | return 0;
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| 42 | }
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| 43 | return 1;
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| 44 | }
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| 45 |
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| 46 | static void snd_adlib_free(struct snd_card *card)
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| 47 | {
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| 48 | release_and_free_resource(card->private_data);
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| 49 | }
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| 50 |
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| 51 | static int snd_adlib_probe(struct device *dev, unsigned int n)
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| 52 | {
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| 53 | struct snd_card *card;
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| 54 | struct snd_opl3 *opl3;
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| 55 | int error;
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| 56 |
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| 57 | error = snd_card_new(dev, index[n], id[n], THIS_MODULE, 0, &card);
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| 58 | if (error < 0) {
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| 59 | dev_err(dev, "could not create card\n");
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| 60 | return error;
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| 61 | }
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| 62 |
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| 63 | card->private_data = request_region(port[n], 4, CRD_NAME);
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| 64 | if (!card->private_data) {
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| 65 | dev_err(dev, "could not grab ports\n");
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| 66 | error = -EBUSY;
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| 67 | goto out;
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| 68 | }
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| 69 | card->private_free = snd_adlib_free;
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| 70 |
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| 71 | strcpy(card->driver, DEV_NAME);
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| 72 | strcpy(card->shortname, CRD_NAME);
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| 73 | sprintf(card->longname, CRD_NAME " at %#lx", port[n]);
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| 74 |
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| 75 | error = snd_opl3_create(card, port[n], port[n] + 2, OPL3_HW_AUTO, 1, &opl3);
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| 76 | if (error < 0) {
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| 77 | dev_err(dev, "could not create OPL\n");
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| 78 | goto out;
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| 79 | }
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| 80 |
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| 81 | error = snd_opl3_hwdep_new(opl3, 0, 0, NULL);
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| 82 | if (error < 0) {
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| 83 | dev_err(dev, "could not create FM\n");
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| 84 | goto out;
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| 85 | }
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| 86 |
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| 87 | error = snd_card_register(card);
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| 88 | if (error < 0) {
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| 89 | dev_err(dev, "could not register card\n");
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| 90 | goto out;
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| 91 | }
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| 92 |
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| 93 | dev_set_drvdata(dev, card);
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| 94 | return 0;
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| 95 |
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| 96 | out: snd_card_free(card);
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| 97 | return error;
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| 98 | }
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| 99 |
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| 100 | static int snd_adlib_remove(struct device *dev, unsigned int n)
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| 101 | {
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| 102 | snd_card_free(dev_get_drvdata(dev));
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| 103 | return 0;
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| 104 | }
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| 105 |
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| 106 | static struct isa_driver snd_adlib_driver = {
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| 107 | .match = snd_adlib_match,
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| 108 | .probe = snd_adlib_probe,
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| 109 | .remove = snd_adlib_remove,
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| 110 |
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| 111 | .driver = {
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| 112 | .name = DEV_NAME
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| 113 | }
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| 114 | };
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| 115 |
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| 116 | module_isa_driver(snd_adlib_driver, SNDRV_CARDS);
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