text: /* SPDX-License-Identifier: GPL-2.0-or-later */
  /*
   * lnbp22.h - driver for lnb supply and control ic lnbp22
   *
   * Copyright (C) 2006 Dominik Kuhlen
   * Based on lnbp21.h
   *
   * the project's page is at https://linuxtv.org
   */
  
  #ifndef _LNBP22_H
  #define _LNBP22_H
  
  /* Enable */
  #define LNBP22_EN	  0x10
  /* Voltage selection */
  #define LNBP22_VSEL	0x02
  /* Plus 1 Volt Bit */
  #define LNBP22_LLC	0x01
  
  #include <linux/dvb/frontend.h>
  
  #if IS_REACHABLE(CONFIG_DVB_LNBP22)
  /*
   * override_set and override_clear control which system register bits (above)
   * to always set & clear
   */
  extern struct dvb_frontend *lnbp22_attach(struct dvb_frontend *fe,
  						struct i2c_adapter *i2c);
  #else
  static inline struct dvb_frontend *lnbp22_attach(struct dvb_frontend *fe,
  						struct i2c_adapter *i2c)
  {
  	printk(KERN_WARNING "%s: driver disabled by Kconfig\n", __func__);
  	return NULL;
  }
  #endif /* CONFIG_DVB_LNBP22 */
  
  #endif /* _LNBP22_H */
  