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
  25 enum lgdt3306a_mpeg_mode {
  26         LGDT3306A_MPEG_PARALLEL = 0,
  27         LGDT3306A_MPEG_SERIAL = 1,
  28 };
  29
  30 enum lgdt3306a_tp_clock_edge {
  31         LGDT3306A_TPCLK_RISING_EDGE = 0,
  32         LGDT3306A_TPCLK_FALLING_EDGE = 1,
  33 };
  34
  35 enum lgdt3306a_tp_valid_polarity {
  36         LGDT3306A_TP_VALID_LOW = 0,
  37         LGDT3306A_TP_VALID_HIGH = 1,
  38 };
  39
  40 struct 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)
  66 struct dvb_frontend *lgdt3306a_attach(const struct lgdt3306a_config *config,
  67                                       struct i2c_adapter *i2c_adap);
  68 #else
  69 static inline
  70 struct 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_ */