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- /*
- * 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);
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