LXR linux/sound/isa/adlib.c

   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 void snd_adlib_free(struct snd_card *card)
  47{
  48        release_and_free_resource(card->private_data);
  49}
  50
  51static int snd_adlib_probe(struct device *dev, unsigned int n)
  52{
  53        struct snd_card *card;
  54        struct snd_opl3 *opl3;
  55        int error;
  56
  57        error = snd_card_new(dev, index[n], id[n], THIS_MODULE, 0, &card);
  58        if (error < 0) {
  59                dev_err(dev, "could not create card\n");
  60                return error;
  61        }
  62
  63        card->private_data = request_region(port[n], 4, CRD_NAME);
  64        if (!card->private_data) {
  65                dev_err(dev, "could not grab ports\n");
  66                error = -EBUSY;
  67                goto out;
  68        }
  69        card->private_free = snd_adlib_free;
  70
  71        strcpy(card->driver, DEV_NAME);
  72        strcpy(card->shortname, CRD_NAME);
  73        sprintf(card->longname, CRD_NAME " at %#lx", port[n]);
  74
  75        error = snd_opl3_create(card, port[n], port[n] + 2, OPL3_HW_AUTO, 1, &opl3);
  76        if (error < 0) {
  77                dev_err(dev, "could not create OPL\n");
  78                goto out;
  79        }
  80
  81        error = snd_opl3_hwdep_new(opl3, 0, 0, NULL);
  82        if (error < 0) {
  83                dev_err(dev, "could not create FM\n");
  84                goto out;
  85        }
  86
  87        error = snd_card_register(card);
  88        if (error < 0) {
  89                dev_err(dev, "could not register card\n");
  90                goto out;
  91        }
  92
  93        dev_set_drvdata(dev, card);
  94        return 0;
  95
  96out:    snd_card_free(card);
  97        return error;
  98}
  99
 100static int snd_adlib_remove(struct device *dev, unsigned int n)
 101{
 102        snd_card_free(dev_get_drvdata(dev));
 103        return 0;
 104}
 105
 106static struct isa_driver snd_adlib_driver = {
 107        .match          = snd_adlib_match,
 108        .probe          = snd_adlib_probe,
 109        .remove         = snd_adlib_remove,
 110
 111        .driver         = {
 112                .name   = DEV_NAME
 113        }
 114};
 115
 116module_isa_driver(snd_adlib_driver, SNDRV_CARDS);
 117