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 18 #ifndef _LGDT3306A_H_ 19 #define _LGDT3306A_H_ 20 21 #include <linux/i2c.h> 22 #include "dvb_frontend.h" 23 24 25 enum lgdt3306a_mpeg_mode { 26 LGDT3306A_MPEG_PARALLEL = 0, 27 LGDT3306A_MPEG_SERIAL = 1, 28 }; 29 30 enum lgdt3306a_tp_clock_edge { 31 LGDT3306A_TPCLK_RISING_EDGE = 0, 32 LGDT3306A_TPCLK_FALLING_EDGE = 1, 33 }; 34 35 enum lgdt3306a_tp_valid_polarity { 36 LGDT3306A_TP_VALID_LOW = 0, 37 LGDT3306A_TP_VALID_HIGH = 1, 38 }; 39 40 struct lgdt3306a_config { 41 u8 i2c_addr; 42 43 /* user defined IF frequency in KHz */ 44 u16 qam_if_khz; 45 u16 vsb_if_khz; 46 47 /* disable i2c repeater - 0:repeater enabled 1:repeater disabled */ 48 unsigned int deny_i2c_rptr:1; 49 50 /* spectral inversion - 0:disabled 1:enabled */ 51 unsigned int spectral_inversion:1; 52 53 enum lgdt3306a_mpeg_mode mpeg_mode; 54 enum lgdt3306a_tp_clock_edge tpclk_edge; 55 enum lgdt3306a_tp_valid_polarity tpvalid_polarity; 56 57 /* demod clock freq in MHz; 24 or 25 supported */ 58 int xtalMHz; 59 60 /* returned by driver if using i2c bus multiplexing */ 61 struct dvb_frontend **fe; 62 struct i2c_adapter **i2c_adapter; 63 }; 64 65 #if IS_REACHABLE(CONFIG_DVB_LGDT3306A) 66 struct dvb_frontend *lgdt3306a_attach(const struct lgdt3306a_config *config, 67 struct i2c_adapter *i2c_adap); 68 #else 69 static inline 70 struct dvb_frontend *lgdt3306a_attach(const struct lgdt3306a_config *config, 71 struct i2c_adapter *i2c_adap) 72 { 73 printk(KERN_WARNING "%s: driver disabled by Kconfig\n", __func__); 74 return NULL; 75 } 76 #endif /* CONFIG_DVB_LGDT3306A */ 77 78 #endif /* _LGDT3306A_H_ */ 79