1 #ifndef __SOUND_HWDEP_H 2 #define __SOUND_HWDEP_H 3 4 /* 5 * Hardware dependent layer 6 * Copyright (c) by Jaroslav Kysela <perex (at) 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 */ 73
