LXR linux/drivers/media/dvb-frontends/lgdt3306a.h

   1/*
   2 *    Support for LGDT3306A - 8VSB/QAM-B
   3 *
   4 *    Copyright (C) 2013,2014 Fred Richter <frichter@hauppauge.com>
   5 *      based on lgdt3305.[ch] by Michael Krufky
   6 *
   7 *    This program is free software; you can redistribute it and/or modify
   8 *    it under the terms of the GNU General Public License as published by
   9 *    the Free Software Foundation; either version 2 of the License, or
  10 *    (at your option) any later version.
  11 *
  12 *    This program is distributed in the hope that it will be useful,
  13 *    but WITHOUT ANY WARRANTY; without even the implied warranty of
  14 *    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  15 *    GNU General Public License for more details.
  16 */
  17
  18#ifndef _LGDT3306A_H_
  19#define _LGDT3306A_H_
  20
  21#include <linux/i2c.h>
  22#include "dvb_frontend.h"
  23
  24
  25enum lgdt3306a_mpeg_mode {
  26        LGDT3306A_MPEG_PARALLEL = 0,
  27        LGDT3306A_MPEG_SERIAL = 1,
  28};
  29
  30enum lgdt3306a_tp_clock_edge {
  31        LGDT3306A_TPCLK_RISING_EDGE = 0,
  32        LGDT3306A_TPCLK_FALLING_EDGE = 1,
  33};
  34
  35enum lgdt3306a_tp_valid_polarity {
  36        LGDT3306A_TP_VALID_LOW = 0,
  37        LGDT3306A_TP_VALID_HIGH = 1,
  38};
  39
  40struct lgdt3306a_config {
  41        u8 i2c_addr;
  42
  43        /* user defined IF frequency in KHz */
  44        u16 qam_if_khz;
  45        u16 vsb_if_khz;
  46
  47        /* disable i2c repeater - 0:repeater enabled 1:repeater disabled */
  48        unsigned int deny_i2c_rptr:1;
  49
  50        /* spectral inversion - 0:disabled 1:enabled */
  51        unsigned int spectral_inversion:1;
  52
  53        enum lgdt3306a_mpeg_mode mpeg_mode;
  54        enum lgdt3306a_tp_clock_edge tpclk_edge;
  55        enum lgdt3306a_tp_valid_polarity tpvalid_polarity;
  56
  57        /* demod clock freq in MHz; 24 or 25 supported */
  58        int  xtalMHz;
  59
  60        /* returned by driver if using i2c bus multiplexing */
  61        struct dvb_frontend **fe;
  62        struct i2c_adapter **i2c_adapter;
  63};
  64
  65#if IS_REACHABLE(CONFIG_DVB_LGDT3306A)
  66struct dvb_frontend *lgdt3306a_attach(const struct lgdt3306a_config *config,
  67                                      struct i2c_adapter *i2c_adap);
  68#else
  69static inline
  70struct dvb_frontend *lgdt3306a_attach(const struct lgdt3306a_config *config,
  71                                      struct i2c_adapter *i2c_adap)
  72{
  73        printk(KERN_WARNING "%s: driver disabled by Kconfig\n", __func__);
  74        return NULL;
  75}
  76#endif /* CONFIG_DVB_LGDT3306A */
  77
  78#endif /* _LGDT3306A_H_ */
  79