1 files changed, 88 insertions, 0 deletions

diff --git a/include/sound/seq_device.h b/include/sound/seq_device.h
new file mode 100644
index 000000000000..204ca540c28e
--- /dev/null
+++ b/include/sound/seq_device.h
@@ -0,0 +1,88 @@
+#ifndef __SOUND_SEQ_DEVICE_H
+#define __SOUND_SEQ_DEVICE_H
+
+/*
+ *  ALSA sequencer device management
+ *  Copyright (c) 1999 by Takashi Iwai <tiwai@suse.de>
+ *
+ *   This program is free software; you can redistribute it and/or modify
+ *   it under the terms of the GNU General Public License as published by
+ *   the Free Software Foundation; either version 2 of the License, or
+ *   (at your option) any later version.
+ *
+ *   This program is distributed in the hope that it will be useful,
+ *   but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ *   GNU General Public License for more details.
+ *
+ *   You should have received a copy of the GNU General Public License
+ *   along with this program; if not, write to the Free Software
+ *   Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307 USA
+ *
+ */
+
+typedef struct snd_seq_device snd_seq_device_t;
+typedef struct snd_seq_dev_ops snd_seq_dev_ops_t;
+
+/*
+ * registered device information
+ */
+
+#define ID_LEN  32
+
+/* status flag */
+#define SNDRV_SEQ_DEVICE_FREE           0
+#define SNDRV_SEQ_DEVICE_REGISTERED     1
+
+struct snd_seq_device {
+        /* device info */
+        snd_card_t *card;       /* sound card */
+        int device;             /* device number */
+        char id[ID_LEN];        /* driver id */
+        char name[80];          /* device name */
+        int argsize;            /* size of the argument */
+        void *driver_data;      /* private data for driver */
+        int status;             /* flag - read only */
+        void *private_data;     /* private data for the caller */
+        void (*private_free)(snd_seq_device_t *device);
+        struct list_head list;  /* link to next device */
+};
+
+
+/* driver operators
+ * init_device:
+ *      Initialize the device with given parameters.
+ *      Typically,
+ *              1. call snd_hwdep_new
+ *              2. allocate private data and initialize it
+ *              3. call snd_hwdep_register
+ *              4. store the instance to dev->driver_data pointer.
+ *              
+ * free_device:
+ *      Release the private data.
+ *      Typically, call snd_device_free(dev->card, dev->driver_data)
+ */
+struct snd_seq_dev_ops {
+        int (*init_device)(snd_seq_device_t *dev);
+        int (*free_device)(snd_seq_device_t *dev);
+};
+
+/*
+ * prototypes
+ */
+void snd_seq_device_load_drivers(void);
+int snd_seq_device_new(snd_card_t *card, int device, char *id, int argsize, snd_seq_device_t **result);
+int snd_seq_device_register_driver(char *id, snd_seq_dev_ops_t *entry, int argsize);
+int snd_seq_device_unregister_driver(char *id);
+
+#define SNDRV_SEQ_DEVICE_ARGPTR(dev) (void *)((char *)(dev) + sizeof(snd_seq_device_t))
+
+
+/*
+ * id strings for generic devices
+ */
+#define SNDRV_SEQ_DEV_ID_MIDISYNTH      "seq-midi"
+#define SNDRV_SEQ_DEV_ID_OPL3           "opl3-synth"
+
+
+#endif /* __SOUND_SEQ_DEVICE_H */