drivers/media/dvb-frontends/ves1x93.h

   1 /*
   2     Driver for VES1893 and VES1993 QPSK Demodulators
   3
   4     Copyright (C) 1999 Convergence Integrated Media GmbH <ralph@convergence.de>
   5     Copyright (C) 2001 Ronny Strutz <3des@elitedvb.de>
   6     Copyright (C) 2002 Dennis Noermann <dennis.noermann@noernet.de>
   7     Copyright (C) 2002-2003 Andreas Oberritter <obi@linuxtv.org>
   8
   9     This program is free software; you can redistribute it and/or modify
  10     it under the terms of the GNU General Public License as published by
  11     the Free Software Foundation; either version 2 of the License, or
  12     (at your option) any later version.
  13
  14     This program is distributed in the hope that it will be useful,
  15     but WITHOUT ANY WARRANTY; without even the implied warranty of
  16     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  17
  18     GNU General Public License for more details.
  19
  20     You should have received a copy of the GNU General Public License
  21     along with this program; if not, write to the Free Software
  22     Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
  23
  24 */
  25
  26 #ifndef VES1X93_H
  27 #define VES1X93_H
  28
  29 #include <linux/dvb/frontend.h>
  30
  31 struct ves1x93_config
  32 {
  33         /* the demodulator's i2c address */
  34         u8 demod_address;
  35
  36         /* value of XIN to use */
  37         u32 xin;
  38
  39         /* should PWM be inverted? */
  40         u8 invert_pwm:1;
  41 };
  42
  43 #if IS_REACHABLE(CONFIG_DVB_VES1X93)
  44 extern struct dvb_frontend* ves1x93_attach(const struct ves1x93_config* config,
  45                                            struct i2c_adapter* i2c);
  46 #else
  47 static inline struct dvb_frontend* ves1x93_attach(const struct ves1x93_config* config,
  48                                            struct i2c_adapter* i2c)
  49 {
  50         printk(KERN_WARNING "%s: driver disabled by Kconfig\n", __func__);
  51         return NULL;
  52 }
  53 #endif // CONFIG_DVB_VES1X93
  54
  55 #endif // VES1X93_H