1 /* 2 * Support for Legend Silicon GB20600 (a.k.a DMB-TH) demodulator 3 * LGS8913, LGS8GL5, LGS8G75 4 * experimental support LGS8G42, LGS8G52 5 * 6 * Copyright (C) 2007-2009 David T.L. Wong <davidtlwong@gmail.com> 7 * Copyright (C) 2008 Sirius International (Hong Kong) Limited 8 * Timothy Lee <timothy.lee@siriushk.com> (for initial work on LGS8GL5) 9 * 10 * This program is free software; you can redistribute it and/or modify 11 * it under the terms of the GNU General Public License as published by 12 * the Free Software Foundation; either version 2 of the License, or 13 * (at your option) any later version. 14 * 15 * This program is distributed in the hope that it will be useful, 16 * but WITHOUT ANY WARRANTY; without even the implied warranty of 17 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 18 * GNU General Public License for more details. 19 * 20 */ 21 22 #ifndef __LGS8GXX_H__ 23 #define __LGS8GXX_H__ 24 25 #include <linux/dvb/frontend.h> 26 #include <linux/i2c.h> 27 28 #define LGS8GXX_PROD_LGS8913 0 29 #define LGS8GXX_PROD_LGS8GL5 1 30 #define LGS8GXX_PROD_LGS8G42 3 31 #define LGS8GXX_PROD_LGS8G52 4 32 #define LGS8GXX_PROD_LGS8G54 5 33 #define LGS8GXX_PROD_LGS8G75 6 34 35 struct lgs8gxx_config { 36 37 /* product type */ 38 u8 prod; 39 40 /* the demodulator's i2c address */ 41 u8 demod_address; 42 43 /* parallel or serial transport stream */ 44 u8 serial_ts; 45 46 /* transport stream polarity*/ 47 u8 ts_clk_pol; 48 49 /* transport stream clock gated by ts_valid */ 50 u8 ts_clk_gated; 51 52 /* A/D Clock frequency */ 53 u32 if_clk_freq; /* in kHz */ 54 55 /* IF frequency */ 56 u32 if_freq; /* in kHz */ 57 58 /*Use External ADC*/ 59 u8 ext_adc; 60 61 /*External ADC output two's complement*/ 62 u8 adc_signed; 63 64 /*Sample IF data at falling edge of IF_CLK*/ 65 u8 if_neg_edge; 66 67 /*IF use Negative center frequency*/ 68 u8 if_neg_center; 69 70 /*8G75 internal ADC input range selection*/ 71 /*0: 0.8Vpp, 1: 1.0Vpp, 2: 1.6Vpp, 3: 2.0Vpp*/ 72 u8 adc_vpp; 73 74 /* slave address and configuration of the tuner */ 75 u8 tuner_address; 76 }; 77 78 #if IS_REACHABLE(CONFIG_DVB_LGS8GXX) 79 extern struct dvb_frontend *lgs8gxx_attach(const struct lgs8gxx_config *config, 80 struct i2c_adapter *i2c); 81 #else 82 static inline 83 struct dvb_frontend *lgs8gxx_attach(const struct lgs8gxx_config *config, 84 struct i2c_adapter *i2c) { 85 printk(KERN_WARNING "%s: driver disabled by Kconfig\n", __func__); 86 return NULL; 87 } 88 #endif /* CONFIG_DVB_LGS8GXX */ 89 90 #endif /* __LGS8GXX_H__ */ 91