drivers/media/dvb-frontends/lgdt3305.h

   1 /*
   2  *    Support for LG Electronics LGDT3304 and LGDT3305 - VSB/QAM
   3  *
   4  *    Copyright (C) 2008, 2009, 2010 Michael Krufky <mkrufky@linuxtv.org>
   5  *
   6  *    This program is free software; you can redistribute it and/or modify
   7  *    it under the terms of the GNU General Public License as published by
   8  *    the Free Software Foundation; either version 2 of the License, or
   9  *    (at your option) any later version.
  10  *
  11  *    This program is distributed in the hope that it will be useful,
  12  *    but WITHOUT ANY WARRANTY; without even the implied warranty of
  13  *    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14  *    GNU General Public License for more details.
  15  *
  16  *    You should have received a copy of the GNU General Public License
  17  *    along with this program; if not, write to the Free Software
  18  *    Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
  19  *
  20  */
  21
  22 #ifndef _LGDT3305_H_
  23 #define _LGDT3305_H_
  24
  25 #include <linux/i2c.h>
  26 #include "dvb_frontend.h"
  27
  28
  29 enum lgdt3305_mpeg_mode {
  30         LGDT3305_MPEG_PARALLEL = 0,
  31         LGDT3305_MPEG_SERIAL = 1,
  32 };
  33
  34 enum lgdt3305_tp_clock_edge {
  35         LGDT3305_TPCLK_RISING_EDGE = 0,
  36         LGDT3305_TPCLK_FALLING_EDGE = 1,
  37 };
  38
  39 enum lgdt3305_tp_clock_mode {
  40         LGDT3305_TPCLK_GATED = 0,
  41         LGDT3305_TPCLK_FIXED = 1,
  42 };
  43
  44 enum lgdt3305_tp_valid_polarity {
  45         LGDT3305_TP_VALID_LOW = 0,
  46         LGDT3305_TP_VALID_HIGH = 1,
  47 };
  48
  49 enum lgdt_demod_chip_type {
  50         LGDT3305 = 0,
  51         LGDT3304 = 1,
  52 };
  53
  54 struct lgdt3305_config {
  55         u8 i2c_addr;
  56
  57         /* user defined IF frequency in KHz */
  58         u16 qam_if_khz;
  59         u16 vsb_if_khz;
  60
  61         /* AGC Power reference - defaults are used if left unset */
  62         u16 usref_8vsb;   /* default: 0x32c4 */
  63         u16 usref_qam64;  /* default: 0x5400 */
  64         u16 usref_qam256; /* default: 0x2a80 */
  65
  66         /* disable i2c repeater - 0:repeater enabled 1:repeater disabled */
  67         unsigned int deny_i2c_rptr:1;
  68
  69         /* spectral inversion - 0:disabled 1:enabled */
  70         unsigned int spectral_inversion:1;
  71
  72         /* use RF AGC loop - 0:disabled 1:enabled */
  73         unsigned int rf_agc_loop:1;
  74
  75         enum lgdt3305_mpeg_mode mpeg_mode;
  76         enum lgdt3305_tp_clock_edge tpclk_edge;
  77         enum lgdt3305_tp_clock_mode tpclk_mode;
  78         enum lgdt3305_tp_valid_polarity tpvalid_polarity;
  79         enum lgdt_demod_chip_type demod_chip;
  80 };
  81
  82 #if IS_REACHABLE(CONFIG_DVB_LGDT3305)
  83 extern
  84 struct dvb_frontend *lgdt3305_attach(const struct lgdt3305_config *config,
  85                                      struct i2c_adapter *i2c_adap);
  86 #else
  87 static inline
  88 struct dvb_frontend *lgdt3305_attach(const struct lgdt3305_config *config,
  89                                      struct i2c_adapter *i2c_adap)
  90 {
  91         printk(KERN_WARNING "%s: driver disabled by Kconfig\n", __func__);
  92         return NULL;
  93 }
  94 #endif /* CONFIG_DVB_LGDT3305 */
  95
  96 #endif /* _LGDT3305_H_ */