1 /* 2 * Driver for Zarlink DVB-T MT352 demodulator 3 * 4 * Written by Holger Waechtler <holger@qanu.de> 5 * and Daniel Mack <daniel@qanu.de> 6 * 7 * AVerMedia AVerTV DVB-T 771 support by 8 * Wolfram Joost <dbox2@frokaschwei.de> 9 * 10 * Support for Samsung TDTC9251DH01C(M) tuner 11 * Copyright (C) 2004 Antonio Mancuso <antonio.mancuso@digitaltelevision.it> 12 * Amauri Celani <acelani@essegi.net> 13 * 14 * DVICO FusionHDTV DVB-T1 and DVICO FusionHDTV DVB-T Lite support by 15 * Christopher Pascoe <c.pascoe@itee.uq.edu.au> 16 * 17 * This program is free software; you can redistribute it and/or modify 18 * it under the terms of the GNU General Public License as published by 19 * the Free Software Foundation; either version 2 of the License, or 20 * (at your option) any later version. 21 * 22 * This program is distributed in the hope that it will be useful, 23 * but WITHOUT ANY WARRANTY; without even the implied warranty of 24 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 25 * 26 * GNU General Public License for more details. 27 */ 28 29 #ifndef MT352_H 30 #define MT352_H 31 32 #include <linux/dvb/frontend.h> 33 34 struct mt352_config 35 { 36 /* the demodulator's i2c address */ 37 u8 demod_address; 38 39 /* frequencies in kHz */ 40 int adc_clock; // default: 20480 41 int if2; // default: 36166 42 43 /* set if no pll is connected to the secondary i2c bus */ 44 int no_tuner; 45 46 /* Initialise the demodulator and PLL. Cannot be NULL */ 47 int (*demod_init)(struct dvb_frontend* fe); 48 }; 49 50 #if IS_REACHABLE(CONFIG_DVB_MT352) 51 extern struct dvb_frontend* mt352_attach(const struct mt352_config* config, 52 struct i2c_adapter* i2c); 53 #else 54 static inline struct dvb_frontend* mt352_attach(const struct mt352_config* config, 55 struct i2c_adapter* i2c) 56 { 57 printk(KERN_WARNING "%s: driver disabled by Kconfig\n", __func__); 58 return NULL; 59 } 60 #endif // CONFIG_DVB_MT352 61 62 static inline int mt352_write(struct dvb_frontend *fe, const u8 buf[], int len) { 63 int r = 0; 64 if (fe->ops.write) 65 r = fe->ops.write(fe, buf, len); 66 return r; 67 } 68 69 #endif // MT352_H 70