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/kconfig.h>
  26 #include <linux/i2c.h>
  27 #include "dvb_frontend.h"
  28
  29
  30 enum lgdt3305_mpeg_mode {
  31         LGDT3305_MPEG_PARALLEL = 0,
  32         LGDT3305_MPEG_SERIAL = 1,
  33 };
  34
  35 enum lgdt3305_tp_clock_edge {
  36         LGDT3305_TPCLK_RISING_EDGE = 0,
  37         LGDT3305_TPCLK_FALLING_EDGE = 1,
  38 };
  39
  40 enum lgdt3305_tp_clock_mode {
  41         LGDT3305_TPCLK_GATED = 0,
  42         LGDT3305_TPCLK_FIXED = 1,
  43 };
  44
  45 enum lgdt3305_tp_valid_polarity {
  46         LGDT3305_TP_VALID_LOW = 0,
  47         LGDT3305_TP_VALID_HIGH = 1,
  48 };
  49
  50 enum lgdt_demod_chip_type {
  51         LGDT3305 = 0,
  52         LGDT3304 = 1,
  53 };
  54
  55 struct lgdt3305_config {
  56         u8 i2c_addr;
  57
  58         /* user defined IF frequency in KHz */
  59         u16 qam_if_khz;
  60         u16 vsb_if_khz;
  61
  62         /* AGC Power reference - defaults are used if left unset */
  63         u16 usref_8vsb;   /* default: 0x32c4 */
  64         u16 usref_qam64;  /* default: 0x5400 */
  65         u16 usref_qam256; /* default: 0x2a80 */
  66
  67         /* disable i2c repeater - 0:repeater enabled 1:repeater disabled */
  68         unsigned int deny_i2c_rptr:1;
  69
  70         /* spectral inversion - 0:disabled 1:enabled */
  71         unsigned int spectral_inversion:1;
  72
  73         /* use RF AGC loop - 0:disabled 1:enabled */
  74         unsigned int rf_agc_loop:1;
  75
  76         enum lgdt3305_mpeg_mode mpeg_mode;
  77         enum lgdt3305_tp_clock_edge tpclk_edge;
  78         enum lgdt3305_tp_clock_mode tpclk_mode;
  79         enum lgdt3305_tp_valid_polarity tpvalid_polarity;
  80         enum lgdt_demod_chip_type demod_chip;
  81 };
  82
  83 #if IS_REACHABLE(CONFIG_DVB_LGDT3305)
  84 extern
  85 struct dvb_frontend *lgdt3305_attach(const struct lgdt3305_config *config,
  86                                      struct i2c_adapter *i2c_adap);
  87 #else
  88 static inline
  89 struct dvb_frontend *lgdt3305_attach(const struct lgdt3305_config *config,
  90                                      struct i2c_adapter *i2c_adap)
  91 {
  92         printk(KERN_WARNING "%s: driver disabled by Kconfig\n", __func__);
  93         return NULL;
  94 }
  95 #endif /* CONFIG_DVB_LGDT3305 */
  96
  97 #endif /* _LGDT3305_H_ */