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  * You should have received a copy of the GNU General Public License
  21  * along with this program; if not, write to the Free Software
  22  * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
  23  */
  24 #ifndef S5H1420_H
  25 #define S5H1420_H
  26
  27 #include <linux/dvb/frontend.h>
  28
  29 struct s5h1420_config
  30 {
  31         /* the demodulator's i2c address */
  32         u8 demod_address;
  33
  34         /* does the inversion require inversion? */
  35         u8 invert:1;
  36
  37         u8 repeated_start_workaround:1;
  38         u8 cdclk_polarity:1; /* 1 == falling edge, 0 == raising edge */
  39
  40         u8 serial_mpeg:1;
  41 };
  42
  43 #if IS_REACHABLE(CONFIG_DVB_S5H1420)
  44 extern struct dvb_frontend *s5h1420_attach(const struct s5h1420_config *config,
  45              struct i2c_adapter *i2c);
  46 extern struct i2c_adapter *s5h1420_get_tuner_i2c_adapter(struct dvb_frontend *fe);
  47 #else
  48 static inline struct dvb_frontend *s5h1420_attach(const struct s5h1420_config *config,
  49                                            struct i2c_adapter *i2c)
  50 {
  51         printk(KERN_WARNING "%s: driver disabled by Kconfig\n", __func__);
  52         return NULL;
  53 }
  54
  55 static inline struct i2c_adapter *s5h1420_get_tuner_i2c_adapter(struct dvb_frontend *fe)
  56 {
  57         return NULL;
  58 }
  59 #endif // CONFIG_DVB_S5H1420
  60
  61 #endif // S5H1420_H