1 /* SPDX-License-Identifier: GPL-2.0-or-later */ 2 /* 3 * Support for Legend Silicon GB20600 (a.k.a DMB-TH) demodulator 4 * LGS8913, LGS8GL5, LGS8G75 5 * experimental support LGS8G42, LGS8G52 6 * 7 * Copyright (C) 2007-2009 David T.L. Wong <davidtlwong@gmail.com> 8 * Copyright (C) 2008 Sirius International (Hong Kong) Limited 9 * Timothy Lee <timothy.lee@siriushk.com> (for initial work on LGS8GL5) 10 */ 11 12 #ifndef __LGS8GXX_H__ 13 #define __LGS8GXX_H__ 14 15 #include <linux/dvb/frontend.h> 16 #include <linux/i2c.h> 17 18 #define LGS8GXX_PROD_LGS8913 0 19 #define LGS8GXX_PROD_LGS8GL5 1 20 #define LGS8GXX_PROD_LGS8G42 3 21 #define LGS8GXX_PROD_LGS8G52 4 22 #define LGS8GXX_PROD_LGS8G54 5 23 #define LGS8GXX_PROD_LGS8G75 6 24 25 struct lgs8gxx_config { 26 27 /* product type */ 28 u8 prod; 29 30 /* the demodulator's i2c address */ 31 u8 demod_address; 32 33 /* parallel or serial transport stream */ 34 u8 serial_ts; 35 36 /* transport stream polarity*/ 37 u8 ts_clk_pol; 38 39 /* transport stream clock gated by ts_valid */ 40 u8 ts_clk_gated; 41 42 /* A/D Clock frequency */ 43 u32 if_clk_freq; /* in kHz */ 44 45 /* IF frequency */ 46 u32 if_freq; /* in kHz */ 47 48 /*Use External ADC*/ 49 u8 ext_adc; 50 51 /*External ADC output two's complement*/ 52 u8 adc_signed; 53 54 /*Sample IF data at falling edge of IF_CLK*/ 55 u8 if_neg_edge; 56 57 /*IF use Negative center frequency*/ 58 u8 if_neg_center; 59 60 /*8G75 internal ADC input range selection*/ 61 /*0: 0.8Vpp, 1: 1.0Vpp, 2: 1.6Vpp, 3: 2.0Vpp*/ 62 u8 adc_vpp; 63 64 /* slave address and configuration of the tuner */ 65 u8 tuner_address; 66 }; 67 68 #if IS_REACHABLE(CONFIG_DVB_LGS8GXX) 69 extern struct dvb_frontend *lgs8gxx_attach(const struct lgs8gxx_config *config, 70 struct i2c_adapter *i2c); 71 #else 72 static inline 73 struct dvb_frontend *lgs8gxx_attach(const struct lgs8gxx_config *config, 74 struct i2c_adapter *i2c) { 75 printk(KERN_WARNING "%s: driver disabled by Kconfig\n", __func__); 76 return NULL; 77 } 78 #endif /* CONFIG_DVB_LGS8GXX */ 79 80 #endif /* __LGS8GXX_H__ */ 81