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https://github.com/torvalds/linux
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d09dbf92ad
Currently in /sys/class/dvb/dvbX.demuxY/ we have: dev uevent With the patch, we have (for a PCI DVB device): dev device -> ../../../devices/pci0000:00/0000:00:1e.0/0000:03:0d.0 uevent So userspace tools can (finally) work out which physical device a DVB adapter refers to. Previously you had to kinda look through dmesg and hope that it hadn't been dumped out of the buffer. This makes debugging a lot easier if the system has been up for a long time! This is done by adding an extra 'struct device *' parameter to dvb_register_adapter(). It will work with any kind of standard linux 'device'. Additionally, if someone has an embedded system which does things differently, they can simply supply 'NULL' and the behaviour will be as before - the link will simply not appear. Ack'd-by: Manu Abraham <manu@linuxtv.org> Acked-by: Michael Krufky <mkrufky@linuxtv.org> Signed-off-by: Andrew de Quincey <adq_dvb@lidskialf.net> Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
107 lines
3 KiB
C
107 lines
3 KiB
C
/*
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* dvbdev.h
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*
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* Copyright (C) 2000 Ralph Metzler & Marcus Metzler
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* for convergence integrated media GmbH
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Lesser Public License
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* as published by the Free Software Foundation; either version 2.1
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* of the License, or (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 Lesser 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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#ifndef _DVBDEV_H_
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#define _DVBDEV_H_
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#include <linux/types.h>
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#include <linux/poll.h>
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#include <linux/fs.h>
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#include <linux/list.h>
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#include <linux/devfs_fs_kernel.h>
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#include <linux/smp_lock.h>
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#define DVB_MAJOR 212
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#define DVB_DEVICE_VIDEO 0
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#define DVB_DEVICE_AUDIO 1
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#define DVB_DEVICE_SEC 2
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#define DVB_DEVICE_FRONTEND 3
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#define DVB_DEVICE_DEMUX 4
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#define DVB_DEVICE_DVR 5
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#define DVB_DEVICE_CA 6
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#define DVB_DEVICE_NET 7
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#define DVB_DEVICE_OSD 8
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struct dvb_adapter {
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int num;
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struct list_head list_head;
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struct list_head device_list;
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const char *name;
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u8 proposed_mac [6];
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void* priv;
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struct device *device;
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struct module *module;
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};
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struct dvb_device {
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struct list_head list_head;
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struct file_operations *fops;
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struct dvb_adapter *adapter;
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int type;
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u32 id;
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/* in theory, 'users' can vanish now,
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but I don't want to change too much now... */
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int readers;
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int writers;
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int users;
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/* don't really need those !? -- FIXME: use video_usercopy */
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int (*kernel_ioctl)(struct inode *inode, struct file *file,
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unsigned int cmd, void *arg);
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void *priv;
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};
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extern int dvb_register_adapter (struct dvb_adapter *adap, const char *name, struct module *module, struct device *device);
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extern int dvb_unregister_adapter (struct dvb_adapter *adap);
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extern int dvb_register_device (struct dvb_adapter *adap,
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struct dvb_device **pdvbdev,
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const struct dvb_device *template,
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void *priv,
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int type);
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extern void dvb_unregister_device (struct dvb_device *dvbdev);
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extern int dvb_generic_open (struct inode *inode, struct file *file);
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extern int dvb_generic_release (struct inode *inode, struct file *file);
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extern int dvb_generic_ioctl (struct inode *inode, struct file *file,
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unsigned int cmd, unsigned long arg);
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/* we don't mess with video_usercopy() any more,
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we simply define out own dvb_usercopy(), which will hopefully become
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generic_usercopy() someday... */
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extern int dvb_usercopy(struct inode *inode, struct file *file,
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unsigned int cmd, unsigned long arg,
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int (*func)(struct inode *inode, struct file *file,
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unsigned int cmd, void *arg));
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#endif /* #ifndef _DVBDEV_H_ */
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