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

   1/* SPDX-License-Identifier: GPL-2.0-or-later */
   2/*
   3 *    Support for LGDT3306A - 8VSB/QAM-B
   4 *
   5 *    Copyright (C) 2013,2014 Fred Richter <frichter@hauppauge.com>
   6 *      based on lgdt3305.[ch] by Michael Krufky
   7 */
   8
   9#ifndef _LGDT3306A_H_
  10#define _LGDT3306A_H_
  11
  12#include <linux/i2c.h>
  13#include <media/dvb_frontend.h>
  14
  15
  16enum lgdt3306a_mpeg_mode {
  17        LGDT3306A_MPEG_PARALLEL = 0,
  18        LGDT3306A_MPEG_SERIAL = 1,
  19};
  20
  21enum lgdt3306a_tp_clock_edge {
  22        LGDT3306A_TPCLK_RISING_EDGE = 0,
  23        LGDT3306A_TPCLK_FALLING_EDGE = 1,
  24};
  25
  26enum lgdt3306a_tp_valid_polarity {
  27        LGDT3306A_TP_VALID_LOW = 0,
  28        LGDT3306A_TP_VALID_HIGH = 1,
  29};
  30
  31struct lgdt3306a_config {
  32        u8 i2c_addr;
  33
  34        /* user defined IF frequency in KHz */
  35        u16 qam_if_khz;
  36        u16 vsb_if_khz;
  37
  38        /* disable i2c repeater - 0:repeater enabled 1:repeater disabled */
  39        unsigned int deny_i2c_rptr:1;
  40
  41        /* spectral inversion - 0:disabled 1:enabled */
  42        unsigned int spectral_inversion:1;
  43
  44        enum lgdt3306a_mpeg_mode mpeg_mode;
  45        enum lgdt3306a_tp_clock_edge tpclk_edge;
  46        enum lgdt3306a_tp_valid_polarity tpvalid_polarity;
  47
  48        /* demod clock freq in MHz; 24 or 25 supported */
  49        int  xtalMHz;
  50
  51        /* returned by driver if using i2c bus multiplexing */
  52        struct dvb_frontend **fe;
  53        struct i2c_adapter **i2c_adapter;
  54};
  55
  56#if IS_REACHABLE(CONFIG_DVB_LGDT3306A)
  57struct dvb_frontend *lgdt3306a_attach(const struct lgdt3306a_config *config,
  58                                      struct i2c_adapter *i2c_adap);
  59#else
  60static inline
  61struct dvb_frontend *lgdt3306a_attach(const struct lgdt3306a_config *config,
  62                                      struct i2c_adapter *i2c_adap)
  63{
  64        printk(KERN_WARNING "%s: driver disabled by Kconfig\n", __func__);
  65        return NULL;
  66}
  67#endif /* CONFIG_DVB_LGDT3306A */
  68
  69#endif /* _LGDT3306A_H_ */
  70