drivers/media/tuners/r820t.h

   1 /* SPDX-License-Identifier: GPL-2.0-or-later */
   2 /*
   3  * Elonics R820T silicon tuner driver
   4  *
   5  * Copyright (C) 2012 Antti Palosaari <crope@iki.fi>
   6  */
   7
   8 #ifndef R820T_H
   9 #define R820T_H
  10
  11 #include <media/dvb_frontend.h>
  12
  13 enum r820t_chip {
  14         CHIP_R820T,
  15         CHIP_R620D,
  16         CHIP_R828D,
  17         CHIP_R828,
  18         CHIP_R828S,
  19         CHIP_R820C,
  20 };
  21
  22 struct r820t_config {
  23         u8 i2c_addr;            /* 0x34 */
  24         u32 xtal;
  25         enum r820t_chip rafael_chip;
  26         unsigned max_i2c_msg_len;
  27         bool use_diplexer;
  28         bool use_predetect;
  29 };
  30
  31 #if IS_REACHABLE(CONFIG_MEDIA_TUNER_R820T)
  32 struct dvb_frontend *r820t_attach(struct dvb_frontend *fe,
  33                                   struct i2c_adapter *i2c,
  34                                   const struct r820t_config *cfg);
  35 #else
  36 static inline struct dvb_frontend *r820t_attach(struct dvb_frontend *fe,
  37                                                 struct i2c_adapter *i2c,
  38                                                 const struct r820t_config *cfg)
  39 {
  40         pr_warn("%s: driver disabled by Kconfig\n", __func__);
  41         return NULL;
  42 }
  43 #endif
  44
  45 #endif