1 files changed, 82 insertions, 0 deletions
diff --git a/include/sound/hwdep.h b/include/sound/hwdep.h
new file mode 100644
index 000000000..afeca5931
--- /dev/null
+++ b/include/sound/hwdep.h
@@ -0,0 +1,82 @@
+#ifndef __SOUND_HWDEP_H
+#define __SOUND_HWDEP_H
+
+/*
+ *  Hardware dependent layer 
+ *  Copyright (c) by Jaroslav Kysela <perex@perex.cz>
+ *
+ *
+ *   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
+ *
+ */
+
+#include <sound/asound.h>
+#include <linux/poll.h>
+
+struct snd_hwdep;
+
+/* hwdep file ops; all ops can be NULL */
+struct snd_hwdep_ops {
+	long long (*llseek)(struct snd_hwdep *hw, struct file *file,
+			    long long offset, int orig);
+	long (*read)(struct snd_hwdep *hw, char __user *buf,
+		     long count, loff_t *offset);
+	long (*write)(struct snd_hwdep *hw, const char __user *buf,
+		      long count, loff_t *offset);
+	int (*open)(struct snd_hwdep *hw, struct file * file);
+	int (*release)(struct snd_hwdep *hw, struct file * file);
+	__poll_t (*poll)(struct snd_hwdep *hw, struct file *file,
+			     poll_table *wait);
+	int (*ioctl)(struct snd_hwdep *hw, struct file *file,
+		     unsigned int cmd, unsigned long arg);
+	int (*ioctl_compat)(struct snd_hwdep *hw, struct file *file,
+			    unsigned int cmd, unsigned long arg);
+	int (*mmap)(struct snd_hwdep *hw, struct file *file,
+		    struct vm_area_struct *vma);
+	int (*dsp_status)(struct snd_hwdep *hw,
+			  struct snd_hwdep_dsp_status *status);
+	int (*dsp_load)(struct snd_hwdep *hw,
+			struct snd_hwdep_dsp_image *image);
+};
+
+struct snd_hwdep {
+	struct snd_card *card;
+	struct list_head list;
+	int device;
+	char id[32];
+	char name[80];
+	int iface;
+
+#ifdef CONFIG_SND_OSSEMUL
+	int oss_type;
+	int ossreg;
+#endif
+
+	struct snd_hwdep_ops ops;
+	wait_queue_head_t open_wait;
+	void *private_data;
+	void (*private_free) (struct snd_hwdep *hwdep);
+	struct device dev;
+
+	struct mutex open_mutex;
+	int used;			/* reference counter */
+	unsigned int dsp_loaded;	/* bit fields of loaded dsp indices */
+	unsigned int exclusive:1;	/* exclusive access mode */
+};
+
+extern int snd_hwdep_new(struct snd_card *card, char *id, int device,
+			 struct snd_hwdep **rhwdep);
+
+#endif /* __SOUND_HWDEP_H */