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7b46160000
Like the previous patch, this one embeds the device object into hwdep object. For a proper object lifecycle, it's freed in the release callback. This also allows us to create sysfs entries via passing to the groups field of the device without explicit function calls. Since each driver can see the device and touch its groups field directly, we don't need to delegate in hwdep core any longer. So, remove the groups field from snd_hwdep, and let the user (in this case only hda_hwdep.c) modify the device groups. Reviewed-by: Jaroslav Kysela <perex@perex.cz> Signed-off-by: Takashi Iwai <tiwai@suse.de>
83 lines
2.6 KiB
C
83 lines
2.6 KiB
C
#ifndef __SOUND_HWDEP_H
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#define __SOUND_HWDEP_H
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/*
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* Hardware dependent layer
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* Copyright (c) by Jaroslav Kysela <perex@perex.cz>
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*
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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*
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*/
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#include <sound/asound.h>
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#include <linux/poll.h>
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struct snd_hwdep;
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/* hwdep file ops; all ops can be NULL */
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struct snd_hwdep_ops {
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long long (*llseek)(struct snd_hwdep *hw, struct file *file,
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long long offset, int orig);
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long (*read)(struct snd_hwdep *hw, char __user *buf,
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long count, loff_t *offset);
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long (*write)(struct snd_hwdep *hw, const char __user *buf,
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long count, loff_t *offset);
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int (*open)(struct snd_hwdep *hw, struct file * file);
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int (*release)(struct snd_hwdep *hw, struct file * file);
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unsigned int (*poll)(struct snd_hwdep *hw, struct file *file,
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poll_table *wait);
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int (*ioctl)(struct snd_hwdep *hw, struct file *file,
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unsigned int cmd, unsigned long arg);
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int (*ioctl_compat)(struct snd_hwdep *hw, struct file *file,
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unsigned int cmd, unsigned long arg);
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int (*mmap)(struct snd_hwdep *hw, struct file *file,
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struct vm_area_struct *vma);
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int (*dsp_status)(struct snd_hwdep *hw,
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struct snd_hwdep_dsp_status *status);
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int (*dsp_load)(struct snd_hwdep *hw,
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struct snd_hwdep_dsp_image *image);
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};
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struct snd_hwdep {
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struct snd_card *card;
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struct list_head list;
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int device;
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char id[32];
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char name[80];
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int iface;
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#ifdef CONFIG_SND_OSSEMUL
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int oss_type;
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int ossreg;
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#endif
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struct snd_hwdep_ops ops;
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wait_queue_head_t open_wait;
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void *private_data;
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void (*private_free) (struct snd_hwdep *hwdep);
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struct device dev;
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struct mutex open_mutex;
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int used; /* reference counter */
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unsigned int dsp_loaded; /* bit fields of loaded dsp indices */
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unsigned int exclusive:1; /* exclusive access mode */
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};
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extern int snd_hwdep_new(struct snd_card *card, char *id, int device,
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struct snd_hwdep **rhwdep);
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#endif /* __SOUND_HWDEP_H */
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