sound/isa/adlib.c

   1 /*
   2  * AdLib FM card driver.
   3  */
   4
   5 #include <linux/kernel.h>
   6 #include <linux/module.h>
   7 #include <linux/isa.h>
   8 #include <sound/core.h>
   9 #include <sound/initval.h>
  10 #include <sound/opl3.h>
  11
  12 #define CRD_NAME "AdLib FM"
  13 #define DEV_NAME "adlib"
  14
  15 MODULE_DESCRIPTION(CRD_NAME);
  16 MODULE_AUTHOR("Rene Herman");
  17 MODULE_LICENSE("GPL");
  18
  19 static int index[SNDRV_CARDS] = SNDRV_DEFAULT_IDX;
  20 static char *id[SNDRV_CARDS] = SNDRV_DEFAULT_STR;
  21 static bool enable[SNDRV_CARDS] = SNDRV_DEFAULT_ENABLE;
  22 static long port[SNDRV_CARDS] = SNDRV_DEFAULT_PORT;
  23
  24 module_param_array(index, int, NULL, 0444);
  25 MODULE_PARM_DESC(index, "Index value for " CRD_NAME " soundcard.");
  26 module_param_array(id, charp, NULL, 0444);
  27 MODULE_PARM_DESC(id, "ID string for " CRD_NAME " soundcard.");
  28 module_param_array(enable, bool, NULL, 0444);
  29 MODULE_PARM_DESC(enable, "Enable " CRD_NAME " soundcard.");
  30 module_param_array(port, long, NULL, 0444);
  31 MODULE_PARM_DESC(port, "Port # for " CRD_NAME " driver.");
  32
  33 static int snd_adlib_match(struct device *dev, unsigned int n)
  34 {
  35         if (!enable[n])
  36                 return 0;
  37
  38         if (port[n] == SNDRV_AUTO_PORT) {
  39                 dev_err(dev, "please specify port\n");
  40                 return 0;
  41         }
  42         return 1;
  43 }
  44
  45 static void snd_adlib_free(struct snd_card *card)
  46 {
  47         release_and_free_resource(card->private_data);
  48 }
  49
  50 static int snd_adlib_probe(struct device *dev, unsigned int n)
  51 {
  52         struct snd_card *card;
  53         struct snd_opl3 *opl3;
  54         int error;
  55
  56         error = snd_card_new(dev, index[n], id[n], THIS_MODULE, 0, &card);
  57         if (error < 0) {
  58                 dev_err(dev, "could not create card\n");
  59                 return error;
  60         }
  61
  62         card->private_data = request_region(port[n], 4, CRD_NAME);
  63         if (!card->private_data) {
  64                 dev_err(dev, "could not grab ports\n");
  65                 error = -EBUSY;
  66                 goto out;
  67         }
  68         card->private_free = snd_adlib_free;
  69
  70         strcpy(card->driver, DEV_NAME);
  71         strcpy(card->shortname, CRD_NAME);
  72         sprintf(card->longname, CRD_NAME " at %#lx", port[n]);
  73
  74         error = snd_opl3_create(card, port[n], port[n] + 2, OPL3_HW_AUTO, 1, &opl3);
  75         if (error < 0) {
  76                 dev_err(dev, "could not create OPL\n");
  77                 goto out;
  78         }
  79
  80         error = snd_opl3_hwdep_new(opl3, 0, 0, NULL);
  81         if (error < 0) {
  82                 dev_err(dev, "could not create FM\n");
  83                 goto out;
  84         }
  85
  86         error = snd_card_register(card);
  87         if (error < 0) {
  88                 dev_err(dev, "could not register card\n");
  89                 goto out;
  90         }
  91
  92         dev_set_drvdata(dev, card);
  93         return 0;
  94
  95 out:    snd_card_free(card);
  96         return error;
  97 }
  98
  99 static int snd_adlib_remove(struct device *dev, unsigned int n)
 100 {
 101         snd_card_free(dev_get_drvdata(dev));
 102         return 0;
 103 }
 104
 105 static struct isa_driver snd_adlib_driver = {
 106         .match          = snd_adlib_match,
 107         .probe          = snd_adlib_probe,
 108         .remove         = snd_adlib_remove,
 109
 110         .driver         = {
 111                 .name   = DEV_NAME
 112         }
 113 };
 114
 115 static int __init alsa_card_adlib_init(void)
 116 {
 117         return isa_register_driver(&snd_adlib_driver, SNDRV_CARDS);
 118 }
 119
 120 static void __exit alsa_card_adlib_exit(void)
 121 {
 122         isa_unregister_driver(&snd_adlib_driver);
 123 }
 124
 125 module_init(alsa_card_adlib_init);
 126 module_exit(alsa_card_adlib_exit);