drivers/media/dvb/frontends/rtl2832.h

   1 /*
   2  * Realtek RTL2832 DVB-T demodulator driver
   3  *
   4  * Copyright (C) 2012 Thomas Mair <thomas.mair86@gmail.com>
   5  *
   6  *      This program is free software; you can redistribute it and/or modify
   7  *      it under the terms of the GNU General Public License as published by
   8  *      the Free Software Foundation; either version 2 of the License, or
   9  *      (at your option) any later version.
  10  *
  11  *      This program is distributed in the hope that it will be useful,
  12  *      but WITHOUT ANY WARRANTY; without even the implied warranty of
  13  *      MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14  *      GNU General Public License for more details.
  15  *
  16  *      You should have received a copy of the GNU General Public License along
  17  *      with this program; if not, write to the Free Software Foundation, Inc.,
  18  *      51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
  19  */
  20
  21 #ifndef RTL2832_H
  22 #define RTL2832_H
  23
  24 #include <linux/dvb/frontend.h>
  25
  26 struct rtl2832_config {
  27         /*
  28          * Demodulator I2C address.
  29          */
  30         u8 i2c_addr;
  31
  32         /*
  33          * Xtal frequency.
  34          * Hz
  35          * 4000000, 16000000, 25000000, 28800000
  36          */
  37         u32 xtal;
  38
  39         /*
  40          * IFs for all used modes.
  41          * Hz
  42          * 4570000, 4571429, 36000000, 36125000, 36166667, 44000000
  43          */
  44         u32 if_dvbt;
  45
  46         /*
  47          */
  48         u8 tuner;
  49 };
  50
  51
  52 #if defined(CONFIG_DVB_RTL2832) || \
  53         (defined(CONFIG_DVB_RTL2832_MODULE) && defined(MODULE))
  54 extern struct dvb_frontend *rtl2832_attach(
  55         const struct rtl2832_config *cfg,
  56         struct i2c_adapter *i2c
  57 );
  58
  59 extern struct i2c_adapter *rtl2832_get_tuner_i2c_adapter(
  60         struct dvb_frontend *fe
  61 );
  62 #else
  63 static inline struct dvb_frontend *rtl2832_attach(
  64         const struct rtl2832_config *config,
  65         struct i2c_adapter *i2c
  66 )
  67 {
  68         printk(KERN_WARNING "%s: driver disabled by Kconfig\n", __func__);
  69         return NULL;
  70 }
  71 #endif
  72
  73
  74 #endif /* RTL2832_H */