LXR linux/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
  27enum r820t_chip {
  28        CHIP_R820T,
  29        CHIP_R620D,
  30        CHIP_R828D,
  31        CHIP_R828,
  32        CHIP_R828S,
  33        CHIP_R820C,
  34};
  35
  36struct 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)
  46struct dvb_frontend *r820t_attach(struct dvb_frontend *fe,
  47                                  struct i2c_adapter *i2c,
  48                                  const struct r820t_config *cfg);
  49#else
  50static 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
  60