/* * AdLib FM card driver. */ #include <sound/driver.h> #include <linux/kernel.h> #include <linux/module.h> #include <linux/platform_device.h> #include <sound/core.h> #include <sound/initval.h> #include <sound/opl3.h> #define CRD_NAME "AdLib FM" #define DRV_NAME "snd_adlib" MODULE_DESCRIPTION(CRD_NAME); MODULE_AUTHOR("Rene Herman"); MODULE_LICENSE("GPL"); static int index[SNDRV_CARDS] = SNDRV_DEFAULT_IDX; static char *id[SNDRV_CARDS] = SNDRV_DEFAULT_STR; static int enable[SNDRV_CARDS] = SNDRV_DEFAULT_ENABLE; static long port[SNDRV_CARDS] = SNDRV_DEFAULT_PORT; module_param_array(index, int, NULL, 0444); MODULE_PARM_DESC(index, "Index value for " CRD_NAME " soundcard."); module_param_array(id, charp, NULL, 0444); MODULE_PARM_DESC(id, "ID string for " CRD_NAME " soundcard."); module_param_array(enable, bool, NULL, 0444); MODULE_PARM_DESC(enable, "Enable " CRD_NAME " soundcard."); module_param_array(port, long, NULL, 0444); MODULE_PARM_DESC(port, "Port # for " CRD_NAME " driver."); static struct platform_device *devices[SNDRV_CARDS]; static void snd_adlib_free(struct snd_card *card) { release_and_free_resource(card->private_data); } static int __devinit snd_adlib_probe(struct platform_device *device) { struct snd_card *card; struct snd_opl3 *opl3; int error, i = device->id; if (port[i] == SNDRV_AUTO_PORT) { snd_printk(KERN_ERR DRV_NAME ": please specify port\n"); error = -EINVAL; goto out0; } card = snd_card_new(index[i], id[i], THIS_MODULE, 0); if (!card) { snd_printk(KERN_ERR DRV_NAME ": could not create card\n"); error = -EINVAL; goto out0; } card->private_data = request_region(port[i], 4, CRD_NAME); if (!card->private_data) { snd_printk(KERN_ERR DRV_NAME ": could not grab ports\n"); error = -EBUSY; goto out1; } card->private_free = snd_adlib_free; error = snd_opl3_create(card, port[i], port[i] + 2, OPL3_HW_AUTO, 1, &opl3); if (error < 0) { snd_printk(KERN_ERR DRV_NAME ": could not create OPL\n"); goto out1; } error = snd_opl3_hwdep_new(opl3, 0, 0, NULL); if (error < 0) { snd_printk(KERN_ERR DRV_NAME ": could not create FM\n"); goto out1; } strcpy(card->driver, DRV_NAME); strcpy(card->shortname, CRD_NAME); sprintf(card->longname, CRD_NAME " at %#lx", port[i]); snd_card_set_dev(card, &device->dev); error = snd_card_register(card); if (error < 0) { snd_printk(KERN_ERR DRV_NAME ": could not register card\n"); goto out1; } platform_set_drvdata(device, card); return 0; out1: snd_card_free(card); out0: return error; } static int __devexit snd_adlib_remove(struct platform_device *device) { snd_card_free(platform_get_drvdata(device)); platform_set_drvdata(device, NULL); return 0; } static struct platform_driver snd_adlib_driver = { .probe = snd_adlib_probe, .remove = __devexit_p(snd_adlib_remove), .driver = { .name = DRV_NAME } }; static int __init alsa_card_adlib_init(void) { int i, cards; if (platform_driver_register(&snd_adlib_driver) < 0) { snd_printk(KERN_ERR DRV_NAME ": could not register driver\n"); return -ENODEV; } for (cards = 0, i = 0; i < SNDRV_CARDS; i++) { struct platform_device *device; if (!enable[i]) continue; device = platform_device_register_simple(DRV_NAME, i, NULL, 0); if (IS_ERR(device)) continue; if (!platform_get_drvdata(device)) { platform_device_unregister(device); continue; } devices[i] = device; cards++; } if (!cards) { #ifdef MODULE printk(KERN_ERR CRD_NAME " soundcard not found or device busy\n"); #endif platform_driver_unregister(&snd_adlib_driver); return -ENODEV; } return 0; } static void __exit alsa_card_adlib_exit(void) { int i; for (i = 0; i < SNDRV_CARDS; i++) platform_device_unregister(devices[i]); platform_driver_unregister(&snd_adlib_driver); } module_init(alsa_card_adlib_init); module_exit(alsa_card_adlib_exit);