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 void snd_adlib_free(struct snd_card *card) 47 { 48 release_and_free_resource(card->private_data); 49 } 50 51 static 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 96 out: snd_card_free(card); 97 return error; 98 } 99 100 static void snd_adlib_remove(struct device *dev, unsigned int n) 101 { 102 snd_card_free(dev_get_drvdata(dev)); 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 module_isa_driver(snd_adlib_driver, SNDRV_CARDS); 116