text: /*
   * lnbp21.h - driver for lnb supply and control ic lnbp21
   *
   * Copyright (C) 2006 Oliver Endriss
   *
   * This program is free software; you can redistribute it and/or
   * modify it under the terms of the GNU General Public License
   * as published by the Free Software Foundation; either version 2
   * of the License, or (at your option) any later version.
   *
   *
   * This program is distributed in the hope that it will be useful,
   * but WITHOUT ANY WARRANTY; without even the implied warranty of
   * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
   * GNU General Public License for more details.
   *
   *
   * You should have received a copy of the GNU General Public License
   * along with this program; if not, write to the Free Software
   * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
   * Or, point your browser to http://www.gnu.org/copyleft/gpl.html
   *
   *
   * the project's page is at https://linuxtv.org
   */
  
  #ifndef _LNBP21_H
  #define _LNBP21_H
  
  #include <linux/kconfig.h>
  
  /* system register bits */
  /* [RO] 0=OK; 1=over current limit flag */
  #define LNBP21_OLF	0x01
  /* [RO] 0=OK; 1=over temperature flag (150 C) */
  #define LNBP21_OTF	0x02
  /* [RW] 0=disable LNB power, enable loopthrough
  	1=enable LNB power, disable loopthrough */
  #define LNBP21_EN	0x04
  /* [RW] 0=low voltage (13/14V, vert pol)
  	1=high voltage (18/19V,horiz pol) */
  #define LNBP21_VSEL	0x08
  /* [RW] increase LNB voltage by 1V:
  	0=13/18V; 1=14/19V */
  #define LNBP21_LLC	0x10
  /* [RW] 0=tone controlled by DSQIN pin
  	1=tone enable, disable DSQIN */
  #define LNBP21_TEN	0x20
  /* [RW] current limit select:
  	0:Iout=500-650mA Isc=300mA
  	1:Iout=400-550mA Isc=200mA */
  #define LNBP21_ISEL	0x40
  /* [RW] short-circuit protect:
  	0=pulsed (dynamic) curr limiting
  	1=static curr limiting */
  #define LNBP21_PCL	0x80
  
  #include <linux/dvb/frontend.h>
  
  #if IS_REACHABLE(CONFIG_DVB_LNBP21)
  /* override_set and override_clear control which
   system register bits (above) to always set & clear */
  extern struct dvb_frontend *lnbp21_attach(struct dvb_frontend *fe,
  				struct i2c_adapter *i2c, u8 override_set,
  				u8 override_clear);
  #else
  static inline struct dvb_frontend *lnbp21_attach(struct dvb_frontend *fe,
  				struct i2c_adapter *i2c, u8 override_set,
  				u8 override_clear)
  {
  	printk(KERN_WARNING "%s: driver disabled by Kconfig\n", __func__);
  	return NULL;
  }
  #endif
  
  #endif
  