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  *
  18  * You should have received a copy of the GNU General Public License
  19  * along with this program; if not, write to the Free Software
  20  * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
  21  * Or, point your browser to http://www.gnu.org/copyleft/gpl.html
  22  *
  23  *
  24  * the project's page is at http://www.linuxtv.org
  25  */
  26
  27 #ifndef _LNBP21_H
  28 #define _LNBP21_H
  29
  30 #include <linux/kconfig.h>
  31
  32 /* system register bits */
  33 /* [RO] 0=OK; 1=over current limit flag */
  34 #define LNBP21_OLF      0x01
  35 /* [RO] 0=OK; 1=over temperature flag (150 C) */
  36 #define LNBP21_OTF      0x02
  37 /* [RW] 0=disable LNB power, enable loopthrough
  38         1=enable LNB power, disable loopthrough */
  39 #define LNBP21_EN       0x04
  40 /* [RW] 0=low voltage (13/14V, vert pol)
  41         1=high voltage (18/19V,horiz pol) */
  42 #define LNBP21_VSEL     0x08
  43 /* [RW] increase LNB voltage by 1V:
  44         0=13/18V; 1=14/19V */
  45 #define LNBP21_LLC      0x10
  46 /* [RW] 0=tone controlled by DSQIN pin
  47         1=tone enable, disable DSQIN */
  48 #define LNBP21_TEN      0x20
  49 /* [RW] current limit select:
  50         0:Iout=500-650mA Isc=300mA
  51         1:Iout=400-550mA Isc=200mA */
  52 #define LNBP21_ISEL     0x40
  53 /* [RW] short-circuit protect:
  54         0=pulsed (dynamic) curr limiting
  55         1=static curr limiting */
  56 #define LNBP21_PCL      0x80
  57
  58 #include <linux/dvb/frontend.h>
  59
  60 #if IS_REACHABLE(CONFIG_DVB_LNBP21)
  61 /* override_set and override_clear control which
  62  system register bits (above) to always set & clear */
  63 extern struct dvb_frontend *lnbp21_attach(struct dvb_frontend *fe,
  64                                 struct i2c_adapter *i2c, u8 override_set,
  65                                 u8 override_clear);
  66 #else
  67 static inline struct dvb_frontend *lnbp21_attach(struct dvb_frontend *fe,
  68                                 struct i2c_adapter *i2c, u8 override_set,
  69                                 u8 override_clear)
  70 {
  71         printk(KERN_WARNING "%s: driver disabled by Kconfig\n", __func__);
  72         return NULL;
  73 }
  74 #endif
  75
  76 #endif