LXR linux/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
  28struct snd_hwdep;
  29
  30struct 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
  44struct 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
  69extern int snd_hwdep_new(struct snd_card *card, char *id, int device,
  70                         struct snd_hwdep **rhwdep);
  71
  72#endif /* __SOUND_HWDEP_H */
  73