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/kconfig.h>
  25 #include <linux/dvb/frontend.h>
  26
  27 struct rtl2832_config {
  28         /*
  29          * Demodulator I2C address.
  30          */
  31         u8 i2c_addr;
  32
  33         /*
  34          * Xtal frequency.
  35          * Hz
  36          * 4000000, 16000000, 25000000, 28800000
  37          */
  38         u32 xtal;
  39
  40         /*
  41          * tuner
  42          * XXX: This must be keep sync with dvb_usb_rtl28xxu demod driver.
  43          */
  44 #define RTL2832_TUNER_TUA9001   0x24
  45 #define RTL2832_TUNER_FC0012    0x26
  46 #define RTL2832_TUNER_E4000     0x27
  47 #define RTL2832_TUNER_FC0013    0x29
  48 #define RTL2832_TUNER_R820T     0x2a
  49 #define RTL2832_TUNER_R828D     0x2b
  50         u8 tuner;
  51 };
  52
  53 #if IS_ENABLED(CONFIG_DVB_RTL2832)
  54 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_i2c_adapter(
  60         struct dvb_frontend *fe
  61 );
  62
  63 extern struct i2c_adapter *rtl2832_get_private_i2c_adapter(
  64         struct dvb_frontend *fe
  65 );
  66
  67 #else
  68
  69 static inline struct dvb_frontend *rtl2832_attach(
  70         const struct rtl2832_config *config,
  71         struct i2c_adapter *i2c
  72 )
  73 {
  74         pr_warn("%s: driver disabled by Kconfig\n", __func__);
  75         return NULL;
  76 }
  77
  78 static inline struct i2c_adapter *rtl2832_get_i2c_adapter(
  79         struct dvb_frontend *fe
  80 )
  81 {
  82         return NULL;
  83 }
  84
  85 static inline struct i2c_adapter *rtl2832_get_private_i2c_adapter(
  86         struct dvb_frontend *fe
  87 )
  88 {
  89         return NULL;
  90 }
  91
  92 #endif
  93
  94
  95 #endif /* RTL2832_H */