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
  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
  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
  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);