1 /* 2 * Support for AltoBeam GB20600 (a.k.a DMB-TH) demodulator 3 * ATBM8830, ATBM8831 4 * 5 * Copyright (C) 2009 David T.L. Wong <davidtlwong@gmail.com> 6 * 7 * This program is free software; you can redistribute it and/or modify 8 * it under the terms of the GNU General Public License as published by 9 * the Free Software Foundation; either version 2 of the License, or 10 * (at your option) any later version. 11 * 12 * This program is distributed in the hope that it will be useful, 13 * but WITHOUT ANY WARRANTY; without even the implied warranty of 14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 15 * GNU General Public License for more details. 16 */ 17 18 #ifndef __ATBM8830_H__ 19 #define __ATBM8830_H__ 20 21 #include <linux/dvb/frontend.h> 22 #include <linux/i2c.h> 23 24 #define ATBM8830_PROD_8830 0 25 #define ATBM8830_PROD_8831 1 26 27 struct atbm8830_config { 28 29 /* product type */ 30 u8 prod; 31 32 /* the demodulator's i2c address */ 33 u8 demod_address; 34 35 /* parallel or serial transport stream */ 36 u8 serial_ts; 37 38 /* transport stream clock output only when receiving valid stream */ 39 u8 ts_clk_gated; 40 41 /* Decoder sample TS data at rising edge of clock */ 42 u8 ts_sampling_edge; 43 44 /* Oscillator clock frequency */ 45 u32 osc_clk_freq; /* in kHz */ 46 47 /* IF frequency */ 48 u32 if_freq; /* in kHz */ 49 50 /* Swap I/Q for zero IF */ 51 u8 zif_swap_iq; 52 53 /* Tuner AGC settings */ 54 u8 agc_min; 55 u8 agc_max; 56 u8 agc_hold_loop; 57 }; 58 59 #if IS_REACHABLE(CONFIG_DVB_ATBM8830) 60 extern struct dvb_frontend *atbm8830_attach(const struct atbm8830_config *config, 61 struct i2c_adapter *i2c); 62 #else 63 static inline 64 struct dvb_frontend *atbm8830_attach(const struct atbm8830_config *config, 65 struct i2c_adapter *i2c) { 66 printk(KERN_WARNING "%s: driver disabled by Kconfig\n", __func__); 67 return NULL; 68 } 69 #endif /* CONFIG_DVB_ATBM8830 */ 70 71 #endif /* __ATBM8830_H__ */ 72