diff options
Diffstat (limited to 'include/sound/hwdep.h')
| -rw-r--r-- | include/sound/hwdep.h | 82 |
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 */ |