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/dvb/frontend.h>
  25 #include <linux/i2c.h>
  26
  27 enum helene_xtal {
  28         SONY_HELENE_XTAL_16000, /* 16 MHz */
  29         SONY_HELENE_XTAL_20500, /* 20.5 MHz */
  30         SONY_HELENE_XTAL_24000, /* 24 MHz */
  31         SONY_HELENE_XTAL_41000 /* 41 MHz */
  32 };
  33
  34 /**
  35  * struct helene_config - the configuration of 'Helene' tuner driver
  36  * @i2c_address:        I2C address of the tuner
  37  * @xtal_freq_mhz:      Oscillator frequency, MHz
  38  * @set_tuner_priv:     Callback function private context
  39  * @set_tuner_callback: Callback function that notifies the parent driver
  40  *                      which tuner is active now
  41  * @xtal: Cristal frequency as described by &enum helene_xtal
  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 /**
  53  * Attach a helene tuner (terrestrial and cable standards)
  54  *
  55  * @fe: frontend to be attached
  56  * @config: pointer to &struct helene_config with tuner configuration.
  57  * @i2c: i2c adapter to use.
  58  *
  59  * return: FE pointer on success, NULL on failure.
  60  */
  61 extern struct dvb_frontend *helene_attach(struct dvb_frontend *fe,
  62                                         const struct helene_config *config,
  63                                         struct i2c_adapter *i2c);
  64
  65 /**
  66  * Attach a helene tuner (satellite standards)
  67  *
  68  * @fe: frontend to be attached
  69  * @config: pointer to &struct helene_config with tuner configuration.
  70  * @i2c: i2c adapter to use.
  71  *
  72  * return: FE pointer on success, NULL on failure.
  73  */
  74 extern struct dvb_frontend *helene_attach_s(struct dvb_frontend *fe,
  75                                         const struct helene_config *config,
  76                                         struct i2c_adapter *i2c);
  77 #else
  78 static inline struct dvb_frontend *helene_attach(struct dvb_frontend *fe,
  79                                         const struct helene_config *config,
  80                                         struct i2c_adapter *i2c)
  81 {
  82         pr_warn("%s: driver disabled by Kconfig\n", __func__);
  83         return NULL;
  84 }
  85 static inline struct dvb_frontend *helene_attach_s(struct dvb_frontend *fe,
  86                                         const struct helene_config *config,
  87                                         struct i2c_adapter *i2c)
  88 {
  89         pr_warn("%s: driver disabled by Kconfig\n", __func__);
  90         return NULL;
  91 }
  92 #endif
  93
  94 #endif