cachepc-linux

Fork of AMDESE/linux with modifications for CachePC side-channel attack
git clone https://git.sinitax.com/sinitax/cachepc-linux
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helene.h (2469B)

      1/* SPDX-License-Identifier: GPL-2.0-or-later */
      2/*
      3 * helene.h
      4 *
      5 * Sony HELENE DVB-S/S2/T/T2/C/C2/ISDB-T/S tuner driver (CXD2858ER)
      6 *
      7 * Copyright 2012 Sony Corporation
      8 * Copyright (C) 2014 NetUP Inc.
      9 * Copyright (C) 2014 Abylay Ospan <aospan@netup.ru>
     10  */
     11
     12#ifndef __DVB_HELENE_H__
     13#define __DVB_HELENE_H__
     14
     15#include <linux/dvb/frontend.h>
     16#include <linux/i2c.h>
     17
     18enum helene_xtal {
     19	SONY_HELENE_XTAL_16000, /* 16 MHz */
     20	SONY_HELENE_XTAL_20500, /* 20.5 MHz */
     21	SONY_HELENE_XTAL_24000, /* 24 MHz */
     22	SONY_HELENE_XTAL_41000 /* 41 MHz */
     23};
     24
     25/**
     26 * struct helene_config - the configuration of 'Helene' tuner driver
     27 * @i2c_address:	I2C address of the tuner
     28 * @xtal_freq_mhz:	Oscillator frequency, MHz
     29 * @set_tuner_priv:	Callback function private context
     30 * @set_tuner_callback:	Callback function that notifies the parent driver
     31 *			which tuner is active now
     32 * @xtal: Cristal frequency as described by &enum helene_xtal
     33 * @fe: Frontend for which connects this tuner
     34 */
     35struct helene_config {
     36	u8	i2c_address;
     37	u8	xtal_freq_mhz;
     38	void	*set_tuner_priv;
     39	int	(*set_tuner_callback)(void *, int);
     40	enum helene_xtal xtal;
     41
     42	struct dvb_frontend *fe;
     43};
     44
     45#if IS_REACHABLE(CONFIG_DVB_HELENE)
     46/**
     47 * helene_attach - Attach a helene tuner (terrestrial and cable standards)
     48 *
     49 * @fe: frontend to be attached
     50 * @config: pointer to &struct helene_config with tuner configuration.
     51 * @i2c: i2c adapter to use.
     52 *
     53 * return: FE pointer on success, NULL on failure.
     54 */
     55extern struct dvb_frontend *helene_attach(struct dvb_frontend *fe,
     56					const struct helene_config *config,
     57					struct i2c_adapter *i2c);
     58
     59/**
     60 * helene_attach_s - Attach a helene tuner (satellite standards)
     61 *
     62 * @fe: frontend to be attached
     63 * @config: pointer to &struct helene_config with tuner configuration.
     64 * @i2c: i2c adapter to use.
     65 *
     66 * return: FE pointer on success, NULL on failure.
     67 */
     68extern struct dvb_frontend *helene_attach_s(struct dvb_frontend *fe,
     69					const struct helene_config *config,
     70					struct i2c_adapter *i2c);
     71#else
     72static inline struct dvb_frontend *helene_attach(struct dvb_frontend *fe,
     73					const struct helene_config *config,
     74					struct i2c_adapter *i2c)
     75{
     76	pr_warn("%s: driver disabled by Kconfig\n", __func__);
     77	return NULL;
     78}
     79static inline struct dvb_frontend *helene_attach_s(struct dvb_frontend *fe,
     80					const struct helene_config *config,
     81					struct i2c_adapter *i2c)
     82{
     83	pr_warn("%s: driver disabled by Kconfig\n", __func__);
     84	return NULL;
     85}
     86#endif
     87
     88#endif