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authorAndré Fabian Silva Delgado <emulatorman@parabola.nu>2015-08-05 17:04:01 -0300
committerAndré Fabian Silva Delgado <emulatorman@parabola.nu>2015-08-05 17:04:01 -0300
commit57f0f512b273f60d52568b8c6b77e17f5636edc0 (patch)
tree5e910f0e82173f4ef4f51111366a3f1299037a7b /include/sound/hwdep.h
Initial import
Diffstat (limited to 'include/sound/hwdep.h')
-rw-r--r--include/sound/hwdep.h82
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..ab9fcb2f9
--- /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);
+ unsigned int (*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 */