drivers/media/dvb-frontends/lnbp21.h

   1 /*
   2  * lnbp21.h - driver for lnb supply and control ic lnbp21
   3  *
   4  * Copyright (C) 2006 Oliver Endriss
   5  *
   6  * This program is free software; you can redistribute it and/or
   7  * modify it under the terms of the GNU General Public License
   8  * as published by the Free Software Foundation; either version 2
   9  * of the License, or (at your option) any later version.
  10  *
  11  *
  12  * This program is distributed in the hope that it will be useful,
  13  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  14  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  15  * GNU General Public License for more details.
  16  *
  17  * To obtain the license, point your browser to
  18  * http://www.gnu.org/copyleft/gpl.html
  19  *
  20  *
  21  * the project's page is at https://linuxtv.org
  22  */
  23
  24 #ifndef _LNBP21_H
  25 #define _LNBP21_H
  26
  27 /* system register bits */
  28 /* [RO] 0=OK; 1=over current limit flag */
  29 #define LNBP21_OLF      0x01
  30 /* [RO] 0=OK; 1=over temperature flag (150 C) */
  31 #define LNBP21_OTF      0x02
  32 /* [RW] 0=disable LNB power, enable loopthrough
  33         1=enable LNB power, disable loopthrough */
  34 #define LNBP21_EN       0x04
  35 /* [RW] 0=low voltage (13/14V, vert pol)
  36         1=high voltage (18/19V,horiz pol) */
  37 #define LNBP21_VSEL     0x08
  38 /* [RW] increase LNB voltage by 1V:
  39         0=13/18V; 1=14/19V */
  40 #define LNBP21_LLC      0x10
  41 /* [RW] 0=tone controlled by DSQIN pin
  42         1=tone enable, disable DSQIN */
  43 #define LNBP21_TEN      0x20
  44 /* [RW] current limit select:
  45         0:Iout=500-650mA Isc=300mA
  46         1:Iout=400-550mA Isc=200mA */
  47 #define LNBP21_ISEL     0x40
  48 /* [RW] short-circuit protect:
  49         0=pulsed (dynamic) curr limiting
  50         1=static curr limiting */
  51 #define LNBP21_PCL      0x80
  52
  53 #include <linux/dvb/frontend.h>
  54
  55 #if IS_REACHABLE(CONFIG_DVB_LNBP21)
  56 /* override_set and override_clear control which
  57  system register bits (above) to always set & clear */
  58 extern struct dvb_frontend *lnbp21_attach(struct dvb_frontend *fe,
  59                                 struct i2c_adapter *i2c, u8 override_set,
  60                                 u8 override_clear);
  61 #else
  62 static inline struct dvb_frontend *lnbp21_attach(struct dvb_frontend *fe,
  63                                 struct i2c_adapter *i2c, u8 override_set,
  64                                 u8 override_clear)
  65 {
  66         printk(KERN_WARNING "%s: driver disabled by Kconfig\n", __func__);
  67         return NULL;
  68 }
  69 #endif
  70
  71 #endif