sound/isa/adlib.c

   1 /*
   2  * AdLib FM card driver.
   3  */
   4
   5 #include <sound/driver.h>
   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 int 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_array(port, long, NULL, 0444);
  32 MODULE_PARM_DESC(port, "Port # for " CRD_NAME " driver.");
  33
  34 static int __devinit 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                 snd_printk(KERN_ERR "%s: please specify port\n", dev->bus_id);
  41                 return 0;
  42         }
  43         return 1;
  44 }
  45
  46 static void snd_adlib_free(struct snd_card *card)
  47 {
  48         release_and_free_resource(card->private_data);
  49 }
  50
  51 static int __devinit 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         card = snd_card_new(index[n], id[n], THIS_MODULE, 0);
  58         if (!card) {
  59                 snd_printk(KERN_ERR "%s: could not create card\n", dev->bus_id);
  60                 return -EINVAL;
  61         }
  62
  63         card->private_data = request_region(port[n], 4, CRD_NAME);
  64         if (!card->private_data) {
  65                 snd_printk(KERN_ERR "%s: could not grab ports\n", dev->bus_id);
  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                 snd_printk(KERN_ERR "%s: could not create OPL\n", dev->bus_id);
  78                 goto out;
  79         }
  80
  81         error = snd_opl3_hwdep_new(opl3, 0, 0, NULL);
  82         if (error < 0) {
  83                 snd_printk(KERN_ERR "%s: could not create FM\n", dev->bus_id);
  84                 goto out;
  85         }
  86
  87         snd_card_set_dev(card, dev);
  88
  89         error = snd_card_register(card);
  90         if (error < 0) {
  91                 snd_printk(KERN_ERR "%s: could not register card\n", dev->bus_id);
  92                 goto out;
  93         }
  94
  95         dev_set_drvdata(dev, card);
  96         return 0;
  97
  98 out:    snd_card_free(card);
  99         return error;
 100 }
 101
 102 static int __devexit snd_adlib_remove(struct device *dev, unsigned int n)
 103 {
 104         snd_card_free(dev_get_drvdata(dev));
 105         dev_set_drvdata(dev, NULL);
 106         return 0;
 107 }
 108
 109 static struct isa_driver snd_adlib_driver = {
 110         .match          = snd_adlib_match,
 111         .probe          = snd_adlib_probe,
 112         .remove         = __devexit_p(snd_adlib_remove),
 113
 114         .driver         = {
 115                 .name   = DEV_NAME
 116         }
 117 };
 118
 119 static int __init alsa_card_adlib_init(void)
 120 {
 121         return isa_register_driver(&snd_adlib_driver, SNDRV_CARDS);
 122 }
 123
 124 static void __exit alsa_card_adlib_exit(void)
 125 {
 126         isa_unregister_driver(&snd_adlib_driver);
 127 }
 128
 129 module_init(alsa_card_adlib_init);
 130 module_exit(alsa_card_adlib_exit);