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1/* SPDX-License-Identifier: GPL-2.0-or-later */2/*3 * Driver for Zarlink DVB-T MT352 demodulator4 *5 * Written by Holger Waechtler <holger@qanu.de>6 * and Daniel Mack <daniel@qanu.de>7 *8 * AVerMedia AVerTV DVB-T 771 support by9 * Wolfram Joost <dbox2@frokaschwei.de>10 *11 * Support for Samsung TDTC9251DH01C(M) tuner12 * Copyright (C) 2004 Antonio Mancuso <antonio.mancuso@digitaltelevision.it>13 * Amauri Celani <acelani@essegi.net>14 *15 * DVICO FusionHDTV DVB-T1 and DVICO FusionHDTV DVB-T Lite support by16 * Christopher Pascoe <c.pascoe@itee.uq.edu.au>17 */18 19#ifndef MT352_H20#define MT352_H21 22#include <linux/dvb/frontend.h>23 24struct mt352_config25{26 /* the demodulator's i2c address */27 u8 demod_address;28 29 /* frequencies in kHz */30 int adc_clock; // default: 2048031 int if2; // default: 3616632 33 /* set if no pll is connected to the secondary i2c bus */34 int no_tuner;35 36 /* Initialise the demodulator and PLL. Cannot be NULL */37 int (*demod_init)(struct dvb_frontend* fe);38};39 40#if IS_REACHABLE(CONFIG_DVB_MT352)41extern struct dvb_frontend* mt352_attach(const struct mt352_config* config,42 struct i2c_adapter* i2c);43#else44static inline struct dvb_frontend* mt352_attach(const struct mt352_config* config,45 struct i2c_adapter* i2c)46{47 printk(KERN_WARNING "%s: driver disabled by Kconfig\n", __func__);48 return NULL;49}50#endif // CONFIG_DVB_MT35251 52static inline int mt352_write(struct dvb_frontend *fe, const u8 buf[], int len) {53 int r = 0;54 if (fe->ops.write)55 r = fe->ops.write(fe, buf, len);56 return r;57}58 59#endif // MT352_H60