drivers/media/dvb/frontends/lgdt3305.h

   1 /*
   2  *    Support for LGDT3305 - VSB/QAM
   3  *
   4  *    Copyright (C) 2008, 2009 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_valid_polarity {
  40         LGDT3305_TP_VALID_LOW = 0,
  41         LGDT3305_TP_VALID_HIGH = 1,
  42 };
  43
  44 struct lgdt3305_config {
  45         u8 i2c_addr;
  46
  47         /* user defined IF frequency in KHz */
  48         u16 qam_if_khz;
  49         u16 vsb_if_khz;
  50
  51         /* AGC Power reference - defaults are used if left unset */
  52         u16 usref_8vsb;   /* default: 0x32c4 */
  53         u16 usref_qam64;  /* default: 0x5400 */
  54         u16 usref_qam256; /* default: 0x2a80 */
  55
  56         /* disable i2c repeater - 0:repeater enabled 1:repeater disabled */
  57         int deny_i2c_rptr:1;
  58
  59         /* spectral inversion - 0:disabled 1:enabled */
  60         int spectral_inversion:1;
  61
  62         /* use RF AGC loop - 0:disabled 1:enabled */
  63         int rf_agc_loop:1;
  64
  65         enum lgdt3305_mpeg_mode mpeg_mode;
  66         enum lgdt3305_tp_clock_edge tpclk_edge;
  67         enum lgdt3305_tp_valid_polarity tpvalid_polarity;
  68 };
  69
  70 #if defined(CONFIG_DVB_LGDT3305) || (defined(CONFIG_DVB_LGDT3305_MODULE) && \
  71                                      defined(MODULE))
  72 extern
  73 struct dvb_frontend *lgdt3305_attach(const struct lgdt3305_config *config,
  74                                      struct i2c_adapter *i2c_adap);
  75 #else
  76 static inline
  77 struct dvb_frontend *lgdt3305_attach(const struct lgdt3305_config *config,
  78                                      struct i2c_adapter *i2c_adap)
  79 {
  80         printk(KERN_WARNING "%s: driver disabled by Kconfig\n", __func__);
  81         return NULL;
  82 }
  83 #endif /* CONFIG_DVB_LGDT3305 */
  84
  85 #endif /* _LGDT3305_H_ */