drivers/media/dvb-frontends/lnbp22.h

   1 /*
   2  * lnbp22.h - driver for lnb supply and control ic lnbp22
   3  *
   4  * Copyright (C) 2006 Dominik Kuhlen
   5  * Based on lnbp21.h
   6  *
   7  * This program is free software; you can redistribute it and/or
   8  * modify it under the terms of the GNU General Public License
   9  * as published by the Free Software Foundation; either version 2
  10  * of the License, or (at your option) any later version.
  11  *
  12  *
  13  * This program is distributed in the hope that it will be useful,
  14  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  15  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  16  * GNU General Public License for more details.
  17  *
  18  * To obtain the license, point your browser to
  19  * http://www.gnu.org/copyleft/gpl.html
  20  *
  21  *
  22  * the project's page is at https://linuxtv.org
  23  */
  24
  25 #ifndef _LNBP22_H
  26 #define _LNBP22_H
  27
  28 /* Enable */
  29 #define LNBP22_EN         0x10
  30 /* Voltage selection */
  31 #define LNBP22_VSEL     0x02
  32 /* Plus 1 Volt Bit */
  33 #define LNBP22_LLC      0x01
  34
  35 #include <linux/dvb/frontend.h>
  36
  37 #if IS_REACHABLE(CONFIG_DVB_LNBP22)
  38 /*
  39  * override_set and override_clear control which system register bits (above)
  40  * to always set & clear
  41  */
  42 extern struct dvb_frontend *lnbp22_attach(struct dvb_frontend *fe,
  43                                                 struct i2c_adapter *i2c);
  44 #else
  45 static inline struct dvb_frontend *lnbp22_attach(struct dvb_frontend *fe,
  46                                                 struct i2c_adapter *i2c)
  47 {
  48         printk(KERN_WARNING "%s: driver disabled by Kconfig\n", __func__);
  49         return NULL;
  50 }
  51 #endif /* CONFIG_DVB_LNBP22 */
  52
  53 #endif /* _LNBP22_H */