drivers/media/dvb-frontends/lnbh25.h

   1 /*
   2  * lnbh25.c
   3  *
   4  * Driver for LNB supply and control IC LNBH25
   5  *
   6  * Copyright (C) 2014 NetUP Inc.
   7  * Copyright (C) 2014 Sergey Kozlov <serjk@netup.ru>
   8  * Copyright (C) 2014 Abylay Ospan <aospan@netup.ru>
   9  *
  10  * This program is free software; you can redistribute it and/or modify
  11  * it under the terms of the GNU General Public License as published by
  12  * the Free Software Foundation; either version 2 of the License, or
  13  * (at your option) any later version.
  14  *
  15  * This program is distributed in the hope that it will be useful,
  16  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  17  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  18  * GNU General Public License for more details.
  19  */
  20
  21 #ifndef LNBH25_H
  22 #define LNBH25_H
  23
  24 #include <linux/i2c.h>
  25 #include <linux/kconfig.h>
  26 #include <linux/dvb/frontend.h>
  27
  28 /* 22 kHz tone enabled. Tone output controlled by DSQIN pin */
  29 #define LNBH25_TEN      0x01
  30 /* Low power mode activated (used only with 22 kHz tone output disabled) */
  31 #define LNBH25_LPM      0x02
  32 /* DSQIN input pin is set to receive external 22 kHz TTL signal source */
  33 #define LNBH25_EXTM     0x04
  34
  35 struct lnbh25_config {
  36         u8      i2c_address;
  37         u8      data2_config;
  38 };
  39
  40 #if IS_REACHABLE(CONFIG_DVB_LNBH25)
  41 struct dvb_frontend *lnbh25_attach(
  42         struct dvb_frontend *fe,
  43         struct lnbh25_config *cfg,
  44         struct i2c_adapter *i2c);
  45 #else
  46 static inline struct dvb_frontend *lnbh25_attach(
  47         struct dvb_frontend *fe,
  48         struct lnbh25_config *cfg,
  49         struct i2c_adapter *i2c)
  50 {
  51         printk(KERN_WARNING "%s: driver disabled by Kconfig\n", __func__);
  52         return NULL;
  53 }
  54 #endif
  55
  56 #endif