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 * You should have received a copy of the GNU General Public License 21 * along with this program; if not, write to the Free Software 22 * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. 23 * 24 */ 25 26 #ifndef __LGS8GXX_H__ 27 #define __LGS8GXX_H__ 28 29 #include <linux/kconfig.h> 30 #include <linux/dvb/frontend.h> 31 #include <linux/i2c.h> 32 33 #define LGS8GXX_PROD_LGS8913 0 34 #define LGS8GXX_PROD_LGS8GL5 1 35 #define LGS8GXX_PROD_LGS8G42 3 36 #define LGS8GXX_PROD_LGS8G52 4 37 #define LGS8GXX_PROD_LGS8G54 5 38 #define LGS8GXX_PROD_LGS8G75 6 39 40 struct lgs8gxx_config { 41 42 /* product type */ 43 u8 prod; 44 45 /* the demodulator's i2c address */ 46 u8 demod_address; 47 48 /* parallel or serial transport stream */ 49 u8 serial_ts; 50 51 /* transport stream polarity*/ 52 u8 ts_clk_pol; 53 54 /* transport stream clock gated by ts_valid */ 55 u8 ts_clk_gated; 56 57 /* A/D Clock frequency */ 58 u32 if_clk_freq; /* in kHz */ 59 60 /* IF frequency */ 61 u32 if_freq; /* in kHz */ 62 63 /*Use External ADC*/ 64 u8 ext_adc; 65 66 /*External ADC output two's complement*/ 67 u8 adc_signed; 68 69 /*Sample IF data at falling edge of IF_CLK*/ 70 u8 if_neg_edge; 71 72 /*IF use Negative center frequency*/ 73 u8 if_neg_center; 74 75 /*8G75 internal ADC input range selection*/ 76 /*0: 0.8Vpp, 1: 1.0Vpp, 2: 1.6Vpp, 3: 2.0Vpp*/ 77 u8 adc_vpp; 78 79 /* slave address and configuration of the tuner */ 80 u8 tuner_address; 81 }; 82 83 #if IS_REACHABLE(CONFIG_DVB_LGS8GXX) 84 extern struct dvb_frontend *lgs8gxx_attach(const struct lgs8gxx_config *config, 85 struct i2c_adapter *i2c); 86 #else 87 static inline 88 struct dvb_frontend *lgs8gxx_attach(const struct lgs8gxx_config *config, 89 struct i2c_adapter *i2c) { 90 printk(KERN_WARNING "%s: driver disabled by Kconfig\n", __func__); 91 return NULL; 92 } 93 #endif /* CONFIG_DVB_LGS8GXX */ 94 95 #endif /* __LGS8GXX_H__ */ 96