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 29enum lgdt3305_mpeg_mode { 30 LGDT3305_MPEG_PARALLEL = 0, 31 LGDT3305_MPEG_SERIAL = 1, 32}; 33 34enum lgdt3305_tp_clock_edge { 35 LGDT3305_TPCLK_RISING_EDGE = 0, 36 LGDT3305_TPCLK_FALLING_EDGE = 1, 37}; 38 39enum lgdt3305_tp_valid_polarity { 40 LGDT3305_TP_VALID_LOW = 0, 41 LGDT3305_TP_VALID_HIGH = 1, 42}; 43 44enum lgdt_demod_chip_type { 45 LGDT3305 = 0, 46 LGDT3304 = 1, 47}; 48 49struct lgdt3305_config { 50 u8 i2c_addr; 51 52 /* user defined IF frequency in KHz */ 53 u16 qam_if_khz; 54 u16 vsb_if_khz; 55 56 /* AGC Power reference - defaults are used if left unset */ 57 u16 usref_8vsb; /* default: 0x32c4 */ 58 u16 usref_qam64; /* default: 0x5400 */ 59 u16 usref_qam256; /* default: 0x2a80 */ 60 61 /* disable i2c repeater - 0:repeater enabled 1:repeater disabled */ 62 unsigned int deny_i2c_rptr:1; 63 64 /* spectral inversion - 0:disabled 1:enabled */ 65 unsigned int spectral_inversion:1; 66 67 /* use RF AGC loop - 0:disabled 1:enabled */ 68 unsigned int rf_agc_loop:1; 69 70 enum lgdt3305_mpeg_mode mpeg_mode; 71 enum lgdt3305_tp_clock_edge tpclk_edge; 72 enum lgdt3305_tp_valid_polarity tpvalid_polarity; 73 enum lgdt_demod_chip_type demod_chip; 74}; 75 76#if defined(CONFIG_DVB_LGDT3305) || (defined(CONFIG_DVB_LGDT3305_MODULE) && \ 77 defined(MODULE)) 78extern 79struct dvb_frontend *lgdt3305_attach(const struct lgdt3305_config *config, 80 struct i2c_adapter *i2c_adap); 81#else 82static inline 83struct dvb_frontend *lgdt3305_attach(const struct lgdt3305_config *config, 84 struct i2c_adapter *i2c_adap) 85{ 86 printk(KERN_WARNING "%s: driver disabled by Kconfig\n", __func__); 87 return NULL; 88} 89#endif /* CONFIG_DVB_LGDT3305 */ 90 91#endif /* _LGDT3305_H_ */ 92