1 /* 2 * Support for LGDT3306A - 8VSB/QAM-B 3 * 4 * Copyright (C) 2013,2014 Fred Richter <frichter@hauppauge.com> 5 * based on lgdt3305.[ch] by Michael Krufky 6 * 7 * This program is free software; you can redistribute it and/or modify 8 * it under the terms of the GNU General Public License as published by 9 * the Free Software Foundation; either version 2 of the License, or 10 * (at your option) any later version. 11 * 12 * This program is distributed in the hope that it will be useful, 13 * but WITHOUT ANY WARRANTY; without even the implied warranty of 14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 15 * GNU General Public License for more details. 16 * 17 * You should have received a copy of the GNU General Public License 18 * along with this program; if not, write to the Free Software 19 * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. 20 * 21 */ 22 23 #ifndef _LGDT3306A_H_ 24 #define _LGDT3306A_H_ 25 26 #include <linux/i2c.h> 27 #include "dvb_frontend.h" 28 29 30 enum lgdt3306a_mpeg_mode { 31 LGDT3306A_MPEG_PARALLEL = 0, 32 LGDT3306A_MPEG_SERIAL = 1, 33 }; 34 35 enum lgdt3306a_tp_clock_edge { 36 LGDT3306A_TPCLK_RISING_EDGE = 0, 37 LGDT3306A_TPCLK_FALLING_EDGE = 1, 38 }; 39 40 enum lgdt3306a_tp_valid_polarity { 41 LGDT3306A_TP_VALID_LOW = 0, 42 LGDT3306A_TP_VALID_HIGH = 1, 43 }; 44 45 struct lgdt3306a_config { 46 u8 i2c_addr; 47 48 /* user defined IF frequency in KHz */ 49 u16 qam_if_khz; 50 u16 vsb_if_khz; 51 52 /* disable i2c repeater - 0:repeater enabled 1:repeater disabled */ 53 int deny_i2c_rptr:1; 54 55 /* spectral inversion - 0:disabled 1:enabled */ 56 int spectral_inversion:1; 57 58 enum lgdt3306a_mpeg_mode mpeg_mode; 59 enum lgdt3306a_tp_clock_edge tpclk_edge; 60 enum lgdt3306a_tp_valid_polarity tpvalid_polarity; 61 62 /* demod clock freq in MHz; 24 or 25 supported */ 63 int xtalMHz; 64 }; 65 66 #if defined(CONFIG_DVB_LGDT3306A) || (defined(CONFIG_DVB_LGDT3306A_MODULE) && \ 67 defined(MODULE)) 68 extern 69 struct dvb_frontend *lgdt3306a_attach(const struct lgdt3306a_config *config, 70 struct i2c_adapter *i2c_adap); 71 #else 72 static inline 73 struct dvb_frontend *lgdt3306a_attach(const struct lgdt3306a_config *config, 74 struct i2c_adapter *i2c_adap) 75 { 76 printk(KERN_WARNING "%s: driver disabled by Kconfig\n", __func__); 77 return NULL; 78 } 79 #endif /* CONFIG_DVB_LGDT3306A */ 80 81 #endif /* _LGDT3306A_H_ */ 82