diff options
Diffstat (limited to 'drivers/media/dvb-core/dvbdev.h')
| -rw-r--r-- | drivers/media/dvb-core/dvbdev.h | 146 |
1 files changed, 146 insertions, 0 deletions
diff --git a/drivers/media/dvb-core/dvbdev.h b/drivers/media/dvb-core/dvbdev.h new file mode 100644 index 000000000000..93a9470d3f0c --- /dev/null +++ b/drivers/media/dvb-core/dvbdev.h @@ -0,0 +1,146 @@ +/* + * dvbdev.h + * + * Copyright (C) 2000 Ralph Metzler & Marcus Metzler + * for convergence integrated media GmbH + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Lesser Public License + * as published by the Free Software Foundation; either version 2.1 + * of the License, or (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU Lesser General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. + * + */ + +#ifndef _DVBDEV_H_ +#define _DVBDEV_H_ + +#include <linux/types.h> +#include <linux/poll.h> +#include <linux/fs.h> +#include <linux/list.h> + +#define DVB_MAJOR 212 + +#if defined(CONFIG_DVB_MAX_ADAPTERS) && CONFIG_DVB_MAX_ADAPTERS > 0 + #define DVB_MAX_ADAPTERS CONFIG_DVB_MAX_ADAPTERS +#else + #define DVB_MAX_ADAPTERS 8 +#endif + +#define DVB_UNSET (-1) + +#define DVB_DEVICE_VIDEO 0 +#define DVB_DEVICE_AUDIO 1 +#define DVB_DEVICE_SEC 2 +#define DVB_DEVICE_FRONTEND 3 +#define DVB_DEVICE_DEMUX 4 +#define DVB_DEVICE_DVR 5 +#define DVB_DEVICE_CA 6 +#define DVB_DEVICE_NET 7 +#define DVB_DEVICE_OSD 8 + +#define DVB_DEFINE_MOD_OPT_ADAPTER_NR(adapter_nr) \ + static short adapter_nr[] = \ + {[0 ... (DVB_MAX_ADAPTERS - 1)] = DVB_UNSET }; \ + module_param_array(adapter_nr, short, NULL, 0444); \ + MODULE_PARM_DESC(adapter_nr, "DVB adapter numbers") + +struct dvb_frontend; + +struct dvb_adapter { + int num; + struct list_head list_head; + struct list_head device_list; + const char *name; + u8 proposed_mac [6]; + void* priv; + + struct device *device; + + struct module *module; + + int mfe_shared; /* indicates mutually exclusive frontends */ + struct dvb_device *mfe_dvbdev; /* frontend device in use */ + struct mutex mfe_lock; /* access lock for thread creation */ +}; + + +struct dvb_device { + struct list_head list_head; + const struct file_operations *fops; + struct dvb_adapter *adapter; + int type; + int minor; + u32 id; + + /* in theory, 'users' can vanish now, + but I don't want to change too much now... */ + int readers; + int writers; + int users; + + wait_queue_head_t wait_queue; + /* don't really need those !? -- FIXME: use video_usercopy */ + int (*kernel_ioctl)(struct file *file, unsigned int cmd, void *arg); + + void *priv; +}; + + +extern int dvb_register_adapter(struct dvb_adapter *adap, const char *name, + struct module *module, struct device *device, + short *adapter_nums); +extern int dvb_unregister_adapter (struct dvb_adapter *adap); + +extern int dvb_register_device (struct dvb_adapter *adap, + struct dvb_device **pdvbdev, + const struct dvb_device *template, + void *priv, + int type); + +extern void dvb_unregister_device (struct dvb_device *dvbdev); + +extern int dvb_generic_open (struct inode *inode, struct file *file); +extern int dvb_generic_release (struct inode *inode, struct file *file); +extern long dvb_generic_ioctl (struct file *file, + unsigned int cmd, unsigned long arg); + +/* we don't mess with video_usercopy() any more, +we simply define out own dvb_usercopy(), which will hopefully become +generic_usercopy() someday... */ + +extern int dvb_usercopy(struct file *file, unsigned int cmd, unsigned long arg, + int (*func)(struct file *file, unsigned int cmd, void *arg)); + +/** generic DVB attach function. */ +#ifdef CONFIG_MEDIA_ATTACH +#define dvb_attach(FUNCTION, ARGS...) ({ \ + void *__r = NULL; \ + typeof(&FUNCTION) __a = symbol_request(FUNCTION); \ + if (__a) { \ + __r = (void *) __a(ARGS); \ + if (__r == NULL) \ + symbol_put(FUNCTION); \ + } else { \ + printk(KERN_ERR "DVB: Unable to find symbol "#FUNCTION"()\n"); \ + } \ + __r; \ +}) + +#else +#define dvb_attach(FUNCTION, ARGS...) ({ \ + FUNCTION(ARGS); \ +}) + +#endif + +#endif /* #ifndef _DVBDEV_H_ */ |
