include/sound/hwdep.h

   1 #ifndef __SOUND_HWDEP_H
   2 #define __SOUND_HWDEP_H
   3
   4 /*
   5  *  Hardware dependent layer
   6  *  Copyright (c) by Jaroslav Kysela <perex@perex.cz>
   7  *
   8  *
   9  *   This program is free software; you can redistribute it and/or modify
  10  *   it under the terms of the GNU General Public License as published by
  11  *   the Free Software Foundation; either version 2 of the License, or
  12  *   (at your option) any later version.
  13  *
  14  *   This program is distributed in the hope that it will be useful,
  15  *   but WITHOUT ANY WARRANTY; without even the implied warranty of
  16  *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  17  *   GNU General Public License for more details.
  18  *
  19  *   You should have received a copy of the GNU General Public License
  20  *   along with this program; if not, write to the Free Software
  21  *   Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307 USA
  22  *
  23  */
  24
  25 #include <sound/asound.h>
  26 #include <linux/poll.h>
  27
  28 struct snd_hwdep;
  29
  30 struct snd_hwdep_ops {
  31         long long (*llseek) (struct snd_hwdep *hw, struct file * file, long long offset, int orig);
  32         long (*read) (struct snd_hwdep *hw, char __user *buf, long count, loff_t *offset);
  33         long (*write) (struct snd_hwdep *hw, const char __user *buf, long count, loff_t *offset);
  34         int (*open) (struct snd_hwdep * hw, struct file * file);
  35         int (*release) (struct snd_hwdep *hw, struct file * file);
  36         unsigned int (*poll) (struct snd_hwdep *hw, struct file * file, poll_table * wait);
  37         int (*ioctl) (struct snd_hwdep *hw, struct file * file, unsigned int cmd, unsigned long arg);
  38         int (*ioctl_compat) (struct snd_hwdep *hw, struct file * file, unsigned int cmd, unsigned long arg);
  39         int (*mmap) (struct snd_hwdep *hw, struct file * file, struct vm_area_struct * vma);
  40         int (*dsp_status) (struct snd_hwdep *hw, struct snd_hwdep_dsp_status *status);
  41         int (*dsp_load) (struct snd_hwdep *hw, struct snd_hwdep_dsp_image *image);
  42 };
  43
  44 struct snd_hwdep {
  45         struct snd_card *card;
  46         struct list_head list;
  47         int device;
  48         char id[32];
  49         char name[80];
  50         int iface;
  51
  52 #ifdef CONFIG_SND_OSSEMUL
  53         char oss_dev[32];
  54         int oss_type;
  55         int ossreg;
  56 #endif
  57
  58         struct snd_hwdep_ops ops;
  59         wait_queue_head_t open_wait;
  60         void *private_data;
  61         void (*private_free) (struct snd_hwdep *hwdep);
  62
  63         struct mutex open_mutex;
  64         int used;
  65         unsigned int dsp_loaded;
  66         unsigned int exclusive: 1;
  67 };
  68
  69 extern int snd_hwdep_new(struct snd_card *card, char *id, int device,
  70                          struct snd_hwdep **rhwdep);
  71
  72 #endif /* __SOUND_HWDEP_H */