LXR linux/drivers/media/dvb-frontends/lgdt3305.h

   1/* SPDX-License-Identifier: GPL-2.0-or-later */
   2/*
   3 *    Support for LG Electronics LGDT3304 and LGDT3305 - VSB/QAM
   4 *
   5 *    Copyright (C) 2008, 2009, 2010 Michael Krufky <mkrufky@linuxtv.org>
   6 */
   7
   8#ifndef _LGDT3305_H_
   9#define _LGDT3305_H_
  10
  11#include <linux/i2c.h>
  12#include <media/dvb_frontend.h>
  13
  14
  15enum lgdt3305_mpeg_mode {
  16        LGDT3305_MPEG_PARALLEL = 0,
  17        LGDT3305_MPEG_SERIAL = 1,
  18};
  19
  20enum lgdt3305_tp_clock_edge {
  21        LGDT3305_TPCLK_RISING_EDGE = 0,
  22        LGDT3305_TPCLK_FALLING_EDGE = 1,
  23};
  24
  25enum lgdt3305_tp_clock_mode {
  26        LGDT3305_TPCLK_GATED = 0,
  27        LGDT3305_TPCLK_FIXED = 1,
  28};
  29
  30enum lgdt3305_tp_valid_polarity {
  31        LGDT3305_TP_VALID_LOW = 0,
  32        LGDT3305_TP_VALID_HIGH = 1,
  33};
  34
  35enum lgdt_demod_chip_type {
  36        LGDT3305 = 0,
  37        LGDT3304 = 1,
  38};
  39
  40struct lgdt3305_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        /* AGC Power reference - defaults are used if left unset */
  48        u16 usref_8vsb;   /* default: 0x32c4 */
  49        u16 usref_qam64;  /* default: 0x5400 */
  50        u16 usref_qam256; /* default: 0x2a80 */
  51
  52        /* disable i2c repeater - 0:repeater enabled 1:repeater disabled */
  53        unsigned int deny_i2c_rptr:1;
  54
  55        /* spectral inversion - 0:disabled 1:enabled */
  56        unsigned int spectral_inversion:1;
  57
  58        /* use RF AGC loop - 0:disabled 1:enabled */
  59        unsigned int rf_agc_loop:1;
  60
  61        enum lgdt3305_mpeg_mode mpeg_mode;
  62        enum lgdt3305_tp_clock_edge tpclk_edge;
  63        enum lgdt3305_tp_clock_mode tpclk_mode;
  64        enum lgdt3305_tp_valid_polarity tpvalid_polarity;
  65        enum lgdt_demod_chip_type demod_chip;
  66};
  67
  68#if IS_REACHABLE(CONFIG_DVB_LGDT3305)
  69extern
  70struct dvb_frontend *lgdt3305_attach(const struct lgdt3305_config *config,
  71                                     struct i2c_adapter *i2c_adap);
  72#else
  73static inline
  74struct dvb_frontend *lgdt3305_attach(const struct lgdt3305_config *config,
  75                                     struct i2c_adapter *i2c_adap)
  76{
  77        printk(KERN_WARNING "%s: driver disabled by Kconfig\n", __func__);
  78        return NULL;
  79}
  80#endif /* CONFIG_DVB_LGDT3305 */
  81
  82#endif /* _LGDT3305_H_ */
  83