ALSA: seq: Define driver object in each driver

This patch moves the driver object initialization and allocation to
each driver's module init/exit code like other normal drivers.  The
snd_seq_driver struct is now published in seq_device.h, and each
driver is responsible to define it with proper driver attributes
(name, probe and remove) with snd_seq_driver specific attributes as id
and argsize fields.  The helper functions snd_seq_driver_register(),
snd_seq_driver_unregister() and module_snd_seq_driver() are used for
simplifying codes.

Signed-off-by: Takashi Iwai <tiwai@suse.de>

1 files changed, 14 insertions, 20 deletions

diff --git a/sound/drivers/opl3/opl3_seq.c b/sound/drivers/opl3/opl3_seq.c
index a9f618e..fdae5d7 100644
--- a/sound/drivers/opl3/opl3_seq.c
+++ b/sound/drivers/opl3/opl3_seq.c
@@ -216,8 +216,9 @@ static int snd_opl3_synth_create_port(struct snd_opl3 * opl3)
 
 /* ------------------------------ */
 
-static int snd_opl3_seq_new_device(struct snd_seq_device *dev)
+static int snd_opl3_seq_probe(struct device *_dev)
 {
+	struct snd_seq_device *dev = to_seq_dev(_dev);
 	struct snd_opl3 *opl3;
 	int client, err;
 	char name[32];
@@ -257,8 +258,9 @@ static int snd_opl3_seq_new_device(struct snd_seq_device *dev)
 	return 0;
 }
 
-static int snd_opl3_seq_delete_device(struct snd_seq_device *dev)
+static int snd_opl3_seq_remove(struct device *_dev)
 {
+	struct snd_seq_device *dev = to_seq_dev(_dev);
 	struct snd_opl3 *opl3;
 
 	opl3 = *(struct snd_opl3 **)SNDRV_SEQ_DEVICE_ARGPTR(dev);
@@ -275,22 +277,14 @@ static int snd_opl3_seq_delete_device(struct snd_seq_device *dev)
 	return 0;
 }
 
-static int __init alsa_opl3_seq_init(void)
-{
-	static struct snd_seq_dev_ops ops =
-	{
-		snd_opl3_seq_new_device,
-		snd_opl3_seq_delete_device
-	};
-
-	return snd_seq_device_register_driver(SNDRV_SEQ_DEV_ID_OPL3, &ops,
-					      sizeof(struct snd_opl3 *));
-}
-
-static void __exit alsa_opl3_seq_exit(void)
-{
-	snd_seq_device_unregister_driver(SNDRV_SEQ_DEV_ID_OPL3);
-}
+static struct snd_seq_driver opl3_seq_driver = {
+	.driver = {
+		.name = KBUILD_MODNAME,
+		.probe = snd_opl3_seq_probe,
+		.remove = snd_opl3_seq_remove,
+	},
+	.id = SNDRV_SEQ_DEV_ID_OPL3,
+	.argsize = sizeof(struct snd_opl3 *),
+};
 
-module_init(alsa_opl3_seq_init)
-module_exit(alsa_opl3_seq_exit)
+module_snd_seq_driver(opl3_seq_driver);