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_valid_polarity { 41 LGDT3305_TP_VALID_LOW = 0, 42 LGDT3305_TP_VALID_HIGH = 1, 43 }; 44 45 enum lgdt_demod_chip_type { 46 LGDT3305 = 0, 47 LGDT3304 = 1, 48 }; 49 50 struct lgdt3305_config { 51 u8 i2c_addr; 52 53 /* user defined IF frequency in KHz */ 54 u16 qam_if_khz; 55 u16 vsb_if_khz; 56 57 /* AGC Power reference - defaults are used if left unset */ 58 u16 usref_8vsb; /* default: 0x32c4 */ 59 u16 usref_qam64; /* default: 0x5400 */ 60 u16 usref_qam256; /* default: 0x2a80 */ 61 62 /* disable i2c repeater - 0:repeater enabled 1:repeater disabled */ 63 unsigned int deny_i2c_rptr:1; 64 65 /* spectral inversion - 0:disabled 1:enabled */ 66 unsigned int spectral_inversion:1; 67 68 /* use RF AGC loop - 0:disabled 1:enabled */ 69 unsigned int rf_agc_loop:1; 70 71 enum lgdt3305_mpeg_mode mpeg_mode; 72 enum lgdt3305_tp_clock_edge tpclk_edge; 73 enum lgdt3305_tp_valid_polarity tpvalid_polarity; 74 enum lgdt_demod_chip_type demod_chip; 75 }; 76 77 #if IS_ENABLED(CONFIG_DVB_LGDT3305) 78 extern 79 struct dvb_frontend *lgdt3305_attach(const struct lgdt3305_config *config, 80 struct i2c_adapter *i2c_adap); 81 #else 82 static inline 83 struct 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