LXR linux/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 * To obtain the license, point your browser to
  19 * http://www.gnu.org/copyleft/gpl.html
  20 *
  21 *
  22 * the project's page is at https://linuxtv.org
  23 */
  24
  25#ifndef _LNBP22_H
  26#define _LNBP22_H
  27
  28/* Enable */
  29#define LNBP22_EN         0x10
  30/* Voltage selection */
  31#define LNBP22_VSEL     0x02
  32/* Plus 1 Volt Bit */
  33#define LNBP22_LLC      0x01
  34
  35#include <linux/dvb/frontend.h>
  36
  37#if IS_REACHABLE(CONFIG_DVB_LNBP22)
  38/*
  39 * override_set and override_clear control which system register bits (above)
  40 * to always set & clear
  41 */
  42extern struct dvb_frontend *lnbp22_attach(struct dvb_frontend *fe,
  43                                                struct i2c_adapter *i2c);
  44#else
  45static inline struct dvb_frontend *lnbp22_attach(struct dvb_frontend *fe,
  46                                                struct i2c_adapter *i2c)
  47{
  48        printk(KERN_WARNING "%s: driver disabled by Kconfig\n", __func__);
  49        return NULL;
  50}
  51#endif /* CONFIG_DVB_LNBP22 */
  52
  53#endif /* _LNBP22_H */
  54