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 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
  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