drivers/media/tuners/r820t.h

   1 /*
   2  * Elonics R820T silicon tuner driver
   3  *
   4  * Copyright (C) 2012 Antti Palosaari <crope@iki.fi>
   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 R820T_H
  22 #define R820T_H
  23
  24 #include <linux/kconfig.h>
  25 #include "dvb_frontend.h"
  26
  27 enum r820t_chip {
  28         CHIP_R820T,
  29         CHIP_R620D,
  30         CHIP_R828D,
  31         CHIP_R828,
  32         CHIP_R828S,
  33         CHIP_R820C,
  34 };
  35
  36 struct r820t_config {
  37         u8 i2c_addr;            /* 0x34 */
  38         u32 xtal;
  39         enum r820t_chip rafael_chip;
  40         unsigned max_i2c_msg_len;
  41         bool use_diplexer;
  42         bool use_predetect;
  43 };
  44
  45 #if IS_ENABLED(CONFIG_MEDIA_TUNER_R820T)
  46 struct dvb_frontend *r820t_attach(struct dvb_frontend *fe,
  47                                   struct i2c_adapter *i2c,
  48                                   const struct r820t_config *cfg);
  49 #else
  50 static inline struct dvb_frontend *r820t_attach(struct dvb_frontend *fe,
  51                                                 struct i2c_adapter *i2c,
  52                                                 const struct r820t_config *cfg)
  53 {
  54         pr_warn("%s: driver disabled by Kconfig\n", __func__);
  55         return NULL;
  56 }
  57 #endif
  58
  59 #endif