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 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_clock_mode { 40 LGDT3305_TPCLK_GATED = 0, 41 LGDT3305_TPCLK_FIXED = 1, 42 }; 43 44 enum lgdt3305_tp_valid_polarity { 45 LGDT3305_TP_VALID_LOW = 0, 46 LGDT3305_TP_VALID_HIGH = 1, 47 }; 48 49 enum lgdt_demod_chip_type { 50 LGDT3305 = 0, 51 LGDT3304 = 1, 52 }; 53 54 struct lgdt3305_config { 55 u8 i2c_addr; 56 57 /* user defined IF frequency in KHz */ 58 u16 qam_if_khz; 59 u16 vsb_if_khz; 60 61 /* AGC Power reference - defaults are used if left unset */ 62 u16 usref_8vsb; /* default: 0x32c4 */ 63 u16 usref_qam64; /* default: 0x5400 */ 64 u16 usref_qam256; /* default: 0x2a80 */ 65 66 /* disable i2c repeater - 0:repeater enabled 1:repeater disabled */ 67 unsigned int deny_i2c_rptr:1; 68 69 /* spectral inversion - 0:disabled 1:enabled */ 70 unsigned int spectral_inversion:1; 71 72 /* use RF AGC loop - 0:disabled 1:enabled */ 73 unsigned int rf_agc_loop:1; 74 75 enum lgdt3305_mpeg_mode mpeg_mode; 76 enum lgdt3305_tp_clock_edge tpclk_edge; 77 enum lgdt3305_tp_clock_mode tpclk_mode; 78 enum lgdt3305_tp_valid_polarity tpvalid_polarity; 79 enum lgdt_demod_chip_type demod_chip; 80 }; 81 82 #if IS_REACHABLE(CONFIG_DVB_LGDT3305) 83 extern 84 struct dvb_frontend *lgdt3305_attach(const struct lgdt3305_config *config, 85 struct i2c_adapter *i2c_adap); 86 #else 87 static inline 88 struct dvb_frontend *lgdt3305_attach(const struct lgdt3305_config *config, 89 struct i2c_adapter *i2c_adap) 90 { 91 printk(KERN_WARNING "%s: driver disabled by Kconfig\n", __func__); 92 return NULL; 93 } 94 #endif /* CONFIG_DVB_LGDT3305 */ 95 96 #endif /* _LGDT3305_H_ */ 97