drivers/media/dvb-frontends/s5h1420.h

   1 /*
   2  * Driver for
   3  *    Samsung S5H1420 and
   4  *    PnpNetwork PN1010 QPSK Demodulator
   5  *
   6  * Copyright (C) 2005 Andrew de Quincey <adq_dvb@lidskialf.net>
   7  * Copyright (C) 2005-8 Patrick Boettcher <pb@linuxtv.org>
   8  *
   9  * This program is free software; you can redistribute it and/or modify
  10  * it under the terms of the GNU General Public License as published by
  11  * the Free Software Foundation; either version 2 of the License, or
  12  * (at your option) any later version.
  13  *
  14  * This program is distributed in the hope that it will be useful,
  15  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  16  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  17  *
  18  * GNU General Public License for more details.
  19  */
  20 #ifndef S5H1420_H
  21 #define S5H1420_H
  22
  23 #include <linux/dvb/frontend.h>
  24
  25 struct s5h1420_config
  26 {
  27         /* the demodulator's i2c address */
  28         u8 demod_address;
  29
  30         /* does the inversion require inversion? */
  31         u8 invert:1;
  32
  33         u8 repeated_start_workaround:1;
  34         u8 cdclk_polarity:1; /* 1 == falling edge, 0 == raising edge */
  35
  36         u8 serial_mpeg:1;
  37 };
  38
  39 #if IS_REACHABLE(CONFIG_DVB_S5H1420)
  40 extern struct dvb_frontend *s5h1420_attach(const struct s5h1420_config *config,
  41              struct i2c_adapter *i2c);
  42 extern struct i2c_adapter *s5h1420_get_tuner_i2c_adapter(struct dvb_frontend *fe);
  43 #else
  44 static inline struct dvb_frontend *s5h1420_attach(const struct s5h1420_config *config,
  45                                            struct i2c_adapter *i2c)
  46 {
  47         printk(KERN_WARNING "%s: driver disabled by Kconfig\n", __func__);
  48         return NULL;
  49 }
  50
  51 static inline struct i2c_adapter *s5h1420_get_tuner_i2c_adapter(struct dvb_frontend *fe)
  52 {
  53         return NULL;
  54 }
  55 #endif // CONFIG_DVB_S5H1420
  56
  57 #endif // S5H1420_H