drivers/media/dvb/frontends/au8522.h

   1 /*
   2     Auvitek AU8522 QAM/8VSB demodulator driver
   3
   4     Copyright (C) 2008 Steven Toth <stoth@hauppauge.com>
   5
   6     This program is free software; you can redistribute it and/or modify
   7     it under the terms of the GNU General Public License as published by
   8     the Free Software Foundation; either version 2 of the License, or
   9     (at your option) any later version.
  10
  11     This program is distributed in the hope that it will be useful,
  12     but WITHOUT ANY WARRANTY; without even the implied warranty of
  13     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14     GNU General Public License for more details.
  15
  16     You should have received a copy of the GNU General Public License
  17     along with this program; if not, write to the Free Software
  18     Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
  19
  20 */
  21
  22 #ifndef __AU8522_H__
  23 #define __AU8522_H__
  24
  25 #include <linux/dvb/frontend.h>
  26
  27 struct au8522_config {
  28         /* the demodulator's i2c address */
  29         u8 demod_address;
  30
  31         /* Return lock status based on tuner lock, or demod lock */
  32 #define AU8522_TUNERLOCKING 0
  33 #define AU8522_DEMODLOCKING 1
  34         u8 status_mode;
  35 };
  36
  37 #if defined(CONFIG_DVB_AU8522) ||                               \
  38             (defined(CONFIG_DVB_AU8522_MODULE) && defined(MODULE))
  39 extern struct dvb_frontend *au8522_attach(const struct au8522_config *config,
  40                                           struct i2c_adapter *i2c);
  41 #else
  42 static inline
  43 struct dvb_frontend *au8522_attach(const struct au8522_config *config,
  44                                    struct i2c_adapter *i2c)
  45 {
  46         printk(KERN_WARNING "%s: driver disabled by Kconfig\n", __func__);
  47         return NULL;
  48 }
  49 #endif /* CONFIG_DVB_AU8522 */
  50
  51 #endif /* __AU8522_H__ */
  52
  53 /*
  54  * Local variables:
  55  * c-basic-offset: 8
  56  */