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); 100