drivers/media/dvb-frontends/helene.h

   1 /*
   2  * helene.h
   3  *
   4  * Sony HELENE DVB-S/S2/T/T2/C/C2/ISDB-T/S tuner driver (CXD2858ER)
   5  *
   6  * Copyright 2012 Sony Corporation
   7  * Copyright (C) 2014 NetUP Inc.
   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 __DVB_HELENE_H__
  22 #define __DVB_HELENE_H__
  23
  24 #include <linux/kconfig.h>
  25 #include <linux/dvb/frontend.h>
  26 #include <linux/i2c.h>
  27
  28 enum helene_xtal {
  29         SONY_HELENE_XTAL_16000, /* 16 MHz */
  30         SONY_HELENE_XTAL_20500, /* 20.5 MHz */
  31         SONY_HELENE_XTAL_24000, /* 24 MHz */
  32         SONY_HELENE_XTAL_41000 /* 41 MHz */
  33 };
  34
  35 /**
  36  * struct helene_config - the configuration of 'Helene' tuner driver
  37  * @i2c_address:        I2C address of the tuner
  38  * @xtal_freq_mhz:      Oscillator frequency, MHz
  39  * @set_tuner_priv:     Callback function private context
  40  * @set_tuner_callback: Callback function that notifies the parent driver
  41  *                      which tuner is active now
  42  */
  43 struct helene_config {
  44         u8      i2c_address;
  45         u8      xtal_freq_mhz;
  46         void    *set_tuner_priv;
  47         int     (*set_tuner_callback)(void *, int);
  48         enum helene_xtal xtal;
  49 };
  50
  51 #if IS_REACHABLE(CONFIG_DVB_HELENE)
  52 extern struct dvb_frontend *helene_attach(struct dvb_frontend *fe,
  53                                         const struct helene_config *config,
  54                                         struct i2c_adapter *i2c);
  55 #else
  56 static inline struct dvb_frontend *helene_attach(struct dvb_frontend *fe,
  57                                         const struct helene_config *config,
  58                                         struct i2c_adapter *i2c)
  59 {
  60         pr_warn("%s: driver disabled by Kconfig\n", __func__);
  61         return NULL;
  62 }
  63 #endif
  64
  65 #if IS_REACHABLE(CONFIG_DVB_HELENE)
  66 extern struct dvb_frontend *helene_attach_s(struct dvb_frontend *fe,
  67                                         const struct helene_config *config,
  68                                         struct i2c_adapter *i2c);
  69 #else
  70 static inline struct dvb_frontend *helene_attach_s(struct dvb_frontend *fe,
  71                                         const struct helene_config *config,
  72                                         struct i2c_adapter *i2c)
  73 {
  74         pr_warn("%s: driver disabled by Kconfig\n", __func__);
  75         return NULL;
  76 }
  77 #endif
  78
  79 #endif