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/* SPDX-License-Identifier: GPL-2.0-or-later */
/*
* Driver for Zarlink DVB-T MT352 demodulator
*
* Written by Holger Waechtler <holger@qanu.de>
* and Daniel Mack <daniel@qanu.de>
*
* AVerMedia AVerTV DVB-T 771 support by
* Wolfram Joost <dbox2@frokaschwei.de>
*
* Support for Samsung TDTC9251DH01C(M) tuner
* Copyright (C) 2004 Antonio Mancuso <antonio.mancuso@digitaltelevision.it>
* Amauri Celani <acelani@essegi.net>
*
* DVICO FusionHDTV DVB-T1 and DVICO FusionHDTV DVB-T Lite support by
* Christopher Pascoe <c.pascoe@itee.uq.edu.au>
*/
#ifndef MT352_H
#define MT352_H
#include <linux/dvb/frontend.h>
struct mt352_config
{
/* the demodulator's i2c address */
u8 demod_address;
/* frequencies in kHz */
int adc_clock; // default: 20480
int if2; // default: 36166
/* set if no pll is connected to the secondary i2c bus */
int no_tuner;
/* Initialise the demodulator and PLL. Cannot be NULL */
int (*demod_init)(struct dvb_frontend* fe);
};
#if IS_REACHABLE(CONFIG_DVB_MT352)
extern struct dvb_frontend* mt352_attach(const struct mt352_config* config,
struct i2c_adapter* i2c);
#else
static inline struct dvb_frontend* mt352_attach(const struct mt352_config* config,
struct i2c_adapter* i2c)
{
printk(KERN_WARNING "%s: driver disabled by Kconfig\n", __func__);
return NULL;
}
#endif // CONFIG_DVB_MT352
static inline int mt352_write(struct dvb_frontend *fe, const u8 buf[], int len) {
int r = 0;
if (fe->ops.write)
r = fe->ops.write(fe, buf, len);
return r;
}
#endif // MT352_H
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