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  *
  19  * You should have received a copy of the GNU General Public License
  20  * along with this program; if not, write to the Free Software
  21  * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
  22  * Or, point your browser to http://www.gnu.org/copyleft/gpl.html
  23  *
  24  *
  25  * the project's page is at https://linuxtv.org
  26  */
  27
  28 #ifndef _LNBP22_H
  29 #define _LNBP22_H
  30
  31 /* Enable */
  32 #define LNBP22_EN         0x10
  33 /* Voltage selection */
  34 #define LNBP22_VSEL     0x02
  35 /* Plus 1 Volt Bit */
  36 #define LNBP22_LLC      0x01
  37
  38 #include <linux/dvb/frontend.h>
  39
  40 #if IS_REACHABLE(CONFIG_DVB_LNBP22)
  41 /*
  42  * override_set and override_clear control which system register bits (above)
  43  * to always set & clear
  44  */
  45 extern struct dvb_frontend *lnbp22_attach(struct dvb_frontend *fe,
  46                                                 struct i2c_adapter *i2c);
  47 #else
  48 static inline struct dvb_frontend *lnbp22_attach(struct dvb_frontend *fe,
  49                                                 struct i2c_adapter *i2c)
  50 {
  51         printk(KERN_WARNING "%s: driver disabled by Kconfig\n", __func__);
  52         return NULL;
  53 }
  54 #endif /* CONFIG_DVB_LNBP22 */
  55
  56 #endif /* _LNBP22_H */