diff options
Diffstat (limited to 'sound/isa/adlib.c')
| -rw-r--r-- | sound/isa/adlib.c | 161 |
1 files changed, 161 insertions, 0 deletions
diff --git a/sound/isa/adlib.c b/sound/isa/adlib.c new file mode 100644 index 00000000000..a253a14e6a4 --- /dev/null +++ b/sound/isa/adlib.c @@ -0,0 +1,161 @@ +/* + * 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); |