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 * You should have received a copy of the GNU General Public License 29 * along with this program; if not, write to the Free Software 30 * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.= 31 */ 32 33 #ifndef MT352_H 34 #define MT352_H 35 36 #include <linux/dvb/frontend.h> 37 38 struct mt352_config 39 { 40 /* the demodulator's i2c address */ 41 u8 demod_address; 42 43 /* frequencies in kHz */ 44 int adc_clock; // default: 20480 45 int if2; // default: 36166 46 47 /* set if no pll is connected to the secondary i2c bus */ 48 int no_tuner; 49 50 /* Initialise the demodulator and PLL. Cannot be NULL */ 51 int (*demod_init)(struct dvb_frontend* fe); 52 }; 53 54 #if IS_ENABLED(CONFIG_DVB_MT352) 55 extern struct dvb_frontend* mt352_attach(const struct mt352_config* config, 56 struct i2c_adapter* i2c); 57 #else 58 static inline struct dvb_frontend* mt352_attach(const struct mt352_config* config, 59 struct i2c_adapter* i2c) 60 { 61 printk(KERN_WARNING "%s: driver disabled by Kconfig\n", __func__); 62 return NULL; 63 } 64 #endif // CONFIG_DVB_MT352 65 66 static inline int mt352_write(struct dvb_frontend *fe, const u8 buf[], int len) { 67 int r = 0; 68 if (fe->ops.write) 69 r = fe->ops.write(fe, buf, len); 70 return r; 71 } 72 73 #endif // MT352_H 74