drivers/media/dvb-frontends/s5h1420.h

   1 /* SPDX-License-Identifier: GPL-2.0-or-later */
   2 /*
   3  * Driver for
   4  *    Samsung S5H1420 and
   5  *    PnpNetwork PN1010 QPSK Demodulator
   6  *
   7  * Copyright (C) 2005 Andrew de Quincey <adq_dvb@lidskialf.net>
   8  * Copyright (C) 2005-8 Patrick Boettcher <pb@linuxtv.org>
   9  */
  10 #ifndef S5H1420_H
  11 #define S5H1420_H
  12
  13 #include <linux/dvb/frontend.h>
  14
  15 struct s5h1420_config
  16 {
  17         /* the demodulator's i2c address */
  18         u8 demod_address;
  19
  20         /* does the inversion require inversion? */
  21         u8 invert:1;
  22
  23         u8 repeated_start_workaround:1;
  24         u8 cdclk_polarity:1; /* 1 == falling edge, 0 == raising edge */
  25
  26         u8 serial_mpeg:1;
  27 };
  28
  29 #if IS_REACHABLE(CONFIG_DVB_S5H1420)
  30 extern struct dvb_frontend *s5h1420_attach(const struct s5h1420_config *config,
  31              struct i2c_adapter *i2c);
  32 extern struct i2c_adapter *s5h1420_get_tuner_i2c_adapter(struct dvb_frontend *fe);
  33 #else
  34 static inline struct dvb_frontend *s5h1420_attach(const struct s5h1420_config *config,
  35                                            struct i2c_adapter *i2c)
  36 {
  37         printk(KERN_WARNING "%s: driver disabled by Kconfig\n", __func__);
  38         return NULL;
  39 }
  40
  41 static inline struct i2c_adapter *s5h1420_get_tuner_i2c_adapter(struct dvb_frontend *fe)
  42 {
  43         return NULL;
  44 }
  45 #endif // CONFIG_DVB_S5H1420
  46
  47 #endif // S5H1420_H