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
  15 enum lgdt3305_mpeg_mode {
  16         LGDT3305_MPEG_PARALLEL = 0,
  17         LGDT3305_MPEG_SERIAL = 1,
  18 };
  19
  20 enum lgdt3305_tp_clock_edge {
  21         LGDT3305_TPCLK_RISING_EDGE = 0,
  22         LGDT3305_TPCLK_FALLING_EDGE = 1,
  23 };
  24
  25 enum lgdt3305_tp_clock_mode {
  26         LGDT3305_TPCLK_GATED = 0,
  27         LGDT3305_TPCLK_FIXED = 1,
  28 };
  29
  30 enum lgdt3305_tp_valid_polarity {
  31         LGDT3305_TP_VALID_LOW = 0,
  32         LGDT3305_TP_VALID_HIGH = 1,
  33 };
  34
  35 enum lgdt_demod_chip_type {
  36         LGDT3305 = 0,
  37         LGDT3304 = 1,
  38 };
  39
  40 struct 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)
  69 extern
  70 struct dvb_frontend *lgdt3305_attach(const struct lgdt3305_config *config,
  71                                      struct i2c_adapter *i2c_adap);
  72 #else
  73 static inline
  74 struct 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_ */