diff options
Diffstat (limited to 'sound/drivers/virmidi.c')
| -rw-r--r-- | sound/drivers/virmidi.c | 92 |
1 files changed, 63 insertions, 29 deletions
diff --git a/sound/drivers/virmidi.c b/sound/drivers/virmidi.c index af12185ab8a..4258723de2a 100644 --- a/sound/drivers/virmidi.c +++ b/sound/drivers/virmidi.c @@ -45,6 +45,8 @@ #include <linux/init.h> #include <linux/wait.h> #include <linux/sched.h> +#include <linux/err.h> +#include <linux/platform_device.h> #include <linux/moduleparam.h> #include <sound/core.h> #include <sound/seq_kernel.h> @@ -59,7 +61,7 @@ MODULE_DESCRIPTION("Dummy soundcard for virtual rawmidi devices"); MODULE_LICENSE("GPL"); MODULE_SUPPORTED_DEVICE("{{ALSA,Virtual rawmidi device}}"); -#define MAX_MIDI_DEVICES 8 +#define MAX_MIDI_DEVICES 4 static int index[SNDRV_CARDS] = SNDRV_DEFAULT_IDX; /* Index 0-MAX */ static char *id[SNDRV_CARDS] = SNDRV_DEFAULT_STR; /* ID for this card */ @@ -73,24 +75,23 @@ MODULE_PARM_DESC(id, "ID string for virmidi soundcard."); module_param_array(enable, bool, NULL, 0444); MODULE_PARM_DESC(enable, "Enable this soundcard."); module_param_array(midi_devs, int, NULL, 0444); -MODULE_PARM_DESC(midi_devs, "MIDI devices # (1-8)"); +MODULE_PARM_DESC(midi_devs, "MIDI devices # (1-4)"); -typedef struct snd_card_virmidi { - snd_card_t *card; - snd_rawmidi_t *midi[MAX_MIDI_DEVICES]; -} snd_card_virmidi_t; +struct snd_card_virmidi { + struct snd_card *card; + struct snd_rawmidi *midi[MAX_MIDI_DEVICES]; +}; -static snd_card_t *snd_virmidi_cards[SNDRV_CARDS] = SNDRV_DEFAULT_PTR; +static struct platform_device *devices[SNDRV_CARDS]; -static int __init snd_card_virmidi_probe(int dev) +static int __init snd_virmidi_probe(struct platform_device *devptr) { - snd_card_t *card; + struct snd_card *card; struct snd_card_virmidi *vmidi; int idx, err; + int dev = devptr->id; - if (!enable[dev]) - return -ENODEV; card = snd_card_new(index[dev], id[dev], THIS_MODULE, sizeof(struct snd_card_virmidi)); if (card == NULL) @@ -103,8 +104,8 @@ static int __init snd_card_virmidi_probe(int dev) midi_devs[dev] = MAX_MIDI_DEVICES; } for (idx = 0; idx < midi_devs[dev]; idx++) { - snd_rawmidi_t *rmidi; - snd_virmidi_dev_t *rdev; + struct snd_rawmidi *rmidi; + struct snd_virmidi_dev *rdev; if ((err = snd_virmidi_new(card, idx, &rmidi)) < 0) goto __nodev; rdev = rmidi->private_data; @@ -117,11 +118,10 @@ static int __init snd_card_virmidi_probe(int dev) strcpy(card->shortname, "VirMIDI"); sprintf(card->longname, "Virtual MIDI Card %i", dev + 1); - if ((err = snd_card_set_generic_dev(card)) < 0) - goto __nodev; + snd_card_set_dev(card, &devptr->dev); if ((err = snd_card_register(card)) == 0) { - snd_virmidi_cards[dev] = card; + platform_set_drvdata(devptr, card); return 0; } __nodev: @@ -129,34 +129,68 @@ static int __init snd_card_virmidi_probe(int dev) return err; } -static int __init alsa_card_virmidi_init(void) +static int snd_virmidi_remove(struct platform_device *devptr) { - int dev, cards; + snd_card_free(platform_get_drvdata(devptr)); + platform_set_drvdata(devptr, NULL); + return 0; +} - for (dev = cards = 0; dev < SNDRV_CARDS && enable[dev]; dev++) { - if (snd_card_virmidi_probe(dev) < 0) { -#ifdef MODULE - printk(KERN_ERR "Card-VirMIDI #%i not found or device busy\n", dev + 1); -#endif - break; +#define SND_VIRMIDI_DRIVER "snd_virmidi" + +static struct platform_driver snd_virmidi_driver = { + .probe = snd_virmidi_probe, + .remove = snd_virmidi_remove, + .driver = { + .name = SND_VIRMIDI_DRIVER + }, +}; + +static void __init_or_module snd_virmidi_unregister_all(void) +{ + int i; + + for (i = 0; i < ARRAY_SIZE(devices); ++i) + platform_device_unregister(devices[i]); + platform_driver_unregister(&snd_virmidi_driver); +} + +static int __init alsa_card_virmidi_init(void) +{ + int i, cards, err; + + if ((err = platform_driver_register(&snd_virmidi_driver)) < 0) + return err; + + cards = 0; + for (i = 0; i < SNDRV_CARDS && enable[i]; i++) { + struct platform_device *device; + device = platform_device_register_simple(SND_VIRMIDI_DRIVER, + i, NULL, 0); + if (IS_ERR(device)) { + err = PTR_ERR(device); + goto errout; } + devices[i] = device; cards++; } if (!cards) { #ifdef MODULE printk(KERN_ERR "Card-VirMIDI soundcard not found or device busy\n"); #endif - return -ENODEV; + err = -ENODEV; + goto errout; } return 0; + + errout: + snd_virmidi_unregister_all(); + return err; } static void __exit alsa_card_virmidi_exit(void) { - int dev; - - for (dev = 0; dev < SNDRV_CARDS; dev++) - snd_card_free(snd_virmidi_cards[dev]); + snd_virmidi_unregister_all(); } module_init(alsa_card_virmidi_init) |