drivers/media/dvb-frontends/ascot2e.h

   1 /*
   2  * ascot2e.h
   3  *
   4  * Sony Ascot3E DVB-T/T2/C/C2 tuner driver
   5  *
   6  * Copyright 2012 Sony Corporation
   7  * Copyright (C) 2014 NetUP Inc.
   8  * Copyright (C) 2014 Sergey Kozlov <serjk@netup.ru>
   9  * Copyright (C) 2014 Abylay Ospan <aospan@netup.ru>
  10  *
  11  * This program is free software; you can redistribute it and/or modify
  12  * it under the terms of the GNU General Public License as published by
  13  * the Free Software Foundation; either version 2 of the License, or
  14  * (at your option) any later version.
  15  *
  16  * This program is distributed in the hope that it will be useful,
  17  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  18  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  19  * GNU General Public License for more details.
  20   */
  21
  22 #ifndef __DVB_ASCOT2E_H__
  23 #define __DVB_ASCOT2E_H__
  24
  25 #include <linux/kconfig.h>
  26 #include <linux/dvb/frontend.h>
  27 #include <linux/i2c.h>
  28
  29 /**
  30  * struct ascot2e_config - the configuration of Ascot2E tuner driver
  31  * @i2c_address:        I2C address of the tuner
  32  * @xtal_freq_mhz:      Oscillator frequency, MHz
  33  * @set_tuner_priv:     Callback function private context
  34  * @set_tuner_callback: Callback function that notifies the parent driver
  35  *                      which tuner is active now
  36  */
  37 struct ascot2e_config {
  38         u8      i2c_address;
  39         u8      xtal_freq_mhz;
  40         void    *set_tuner_priv;
  41         int     (*set_tuner_callback)(void *, int);
  42 };
  43
  44 #if IS_REACHABLE(CONFIG_DVB_ASCOT2E)
  45 extern struct dvb_frontend *ascot2e_attach(struct dvb_frontend *fe,
  46                                         const struct ascot2e_config *config,
  47                                         struct i2c_adapter *i2c);
  48 #else
  49 static inline struct dvb_frontend *ascot2e_attach(struct dvb_frontend *fe,
  50                                         const struct ascot2e_config *config,
  51                                         struct i2c_adapter *i2c)
  52 {
  53         printk(KERN_WARNING "%s: driver disabled by Kconfig\n", __func__);
  54         return NULL;
  55 }
  56 #endif
  57
  58 #endif