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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;
int 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: error = -EINVAL; /* FIXME: should be the original error code */
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;
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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