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150 lines
4.1 KiB
150 lines
4.1 KiB
/* |
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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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#define DVB_MAJOR 212 |
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#if defined(CONFIG_DVB_MAX_ADAPTERS) && CONFIG_DVB_MAX_ADAPTERS > 0 |
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#define DVB_MAX_ADAPTERS CONFIG_DVB_MAX_ADAPTERS |
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#else |
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#define DVB_MAX_ADAPTERS 8 |
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#endif |
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#define DVB_UNSET (-1) |
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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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#define DVB_DEFINE_MOD_OPT_ADAPTER_NR(adapter_nr) \ |
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static short adapter_nr[] = \ |
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{[0 ... (DVB_MAX_ADAPTERS - 1)] = DVB_UNSET }; \ |
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module_param_array(adapter_nr, short, NULL, 0444); \ |
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MODULE_PARM_DESC(adapter_nr, "DVB adapter numbers") |
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struct dvb_frontend; |
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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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int mfe_shared; /* indicates mutually exclusive frontends */ |
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struct dvb_device *mfe_dvbdev; /* frontend device in use */ |
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struct mutex mfe_lock; /* access lock for thread creation */ |
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}; |
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struct dvb_device { |
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struct list_head list_head; |
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const struct file_operations *fops; |
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struct dvb_adapter *adapter; |
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int type; |
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int minor; |
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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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wait_queue_head_t wait_queue; |
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/* don't really need those !? -- FIXME: use video_usercopy */ |
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int (*kernel_ioctl)(struct file *file, 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, |
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struct module *module, struct device *device, |
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short *adapter_nums); |
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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 long dvb_generic_ioctl (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 file *file, unsigned int cmd, unsigned long arg, |
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int (*func)(struct file *file, unsigned int cmd, void *arg)); |
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/** generic DVB attach function. */ |
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#ifdef CONFIG_MEDIA_ATTACH |
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#define dvb_attach(FUNCTION, ARGS...) ({ \ |
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void *__r = NULL; \ |
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typeof(&FUNCTION) __a = symbol_request(FUNCTION); \ |
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if (__a) { \ |
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__r = (void *) __a(ARGS); \ |
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if (__r == NULL) \ |
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symbol_put(FUNCTION); \ |
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} else { \ |
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printk(KERN_ERR "DVB: Unable to find symbol "#FUNCTION"()\n"); \ |
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} \ |
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__r; \ |
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}) |
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#define dvb_detach(FUNC) symbol_put_addr(FUNC) |
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#else |
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#define dvb_attach(FUNCTION, ARGS...) ({ \ |
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FUNCTION(ARGS); \ |
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}) |
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#define dvb_detach(FUNC) {} |
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#endif |
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#endif /* #ifndef _DVBDEV_H_ */
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