1 /* SPDX-License-Identifier: GPL-2.0-or-later */ 2 /* 3 * Support for LG Electronics LGDT3304 and LGDT3305 - VSB/QAM 4 * 5 * Copyright (C) 2008, 2009, 2010 Michael Krufky <mkrufky@linuxtv.org> 6 */ 7 8 #ifndef _LGDT3305_H_ 9 #define _LGDT3305_H_ 10 11 #include <linux/i2c.h> 12 #include <media/dvb_frontend.h> 13 14 15 enum lgdt3305_mpeg_mode { 16 LGDT3305_MPEG_PARALLEL = 0, 17 LGDT3305_MPEG_SERIAL = 1, 18 }; 19 20 enum lgdt3305_tp_clock_edge { 21 LGDT3305_TPCLK_RISING_EDGE = 0, 22 LGDT3305_TPCLK_FALLING_EDGE = 1, 23 }; 24 25 enum lgdt3305_tp_clock_mode { 26 LGDT3305_TPCLK_GATED = 0, 27 LGDT3305_TPCLK_FIXED = 1, 28 }; 29 30 enum lgdt3305_tp_valid_polarity { 31 LGDT3305_TP_VALID_LOW = 0, 32 LGDT3305_TP_VALID_HIGH = 1, 33 }; 34 35 enum lgdt_demod_chip_type { 36 LGDT3305 = 0, 37 LGDT3304 = 1, 38 }; 39 40 struct lgdt3305_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 /* AGC Power reference - defaults are used if left unset */ 48 u16 usref_8vsb; /* default: 0x32c4 */ 49 u16 usref_qam64; /* default: 0x5400 */ 50 u16 usref_qam256; /* default: 0x2a80 */ 51 52 /* disable i2c repeater - 0:repeater enabled 1:repeater disabled */ 53 unsigned int deny_i2c_rptr:1; 54 55 /* spectral inversion - 0:disabled 1:enabled */ 56 unsigned int spectral_inversion:1; 57 58 /* use RF AGC loop - 0:disabled 1:enabled */ 59 unsigned int rf_agc_loop:1; 60 61 enum lgdt3305_mpeg_mode mpeg_mode; 62 enum lgdt3305_tp_clock_edge tpclk_edge; 63 enum lgdt3305_tp_clock_mode tpclk_mode; 64 enum lgdt3305_tp_valid_polarity tpvalid_polarity; 65 enum lgdt_demod_chip_type demod_chip; 66 }; 67 68 #if IS_REACHABLE(CONFIG_DVB_LGDT3305) 69 extern 70 struct dvb_frontend *lgdt3305_attach(const struct lgdt3305_config *config, 71 struct i2c_adapter *i2c_adap); 72 #else 73 static inline 74 struct dvb_frontend *lgdt3305_attach(const struct lgdt3305_config *config, 75 struct i2c_adapter *i2c_adap) 76 { 77 printk(KERN_WARNING "%s: driver disabled by Kconfig\n", __func__); 78 return NULL; 79 } 80 #endif /* CONFIG_DVB_LGDT3305 */ 81 82 #endif /* _LGDT3305_H_ */ 83