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/*
* frontend.h
*
* Copyright (C) 2000 Marcus Metzler <marcus@convergence.de>
* & Ralph Metzler <ralph@convergence.de>
* for convergence integrated media GmbH
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public License
* as published by the Free Software Foundation; either version 2.1
* of the License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
*
*/
#ifndef _FRONTEND_H_
#define _FRONTEND_H_
#if defined(__sun)
#include <sys/ioccom.h>
#else
#include <asm/types.h>
#endif
#define ENOSIGNAL 768
#ifndef EBUFFEROVERFLOW
#define EBUFFEROVERFLOW 769
#endif
typedef uint32_t FrontendStatus;
/* bit definitions for FrontendStatus */
#define FE_HAS_POWER 1
#define FE_HAS_SIGNAL 2
#define FE_SPECTRUM_INV 4
#define FE_HAS_LOCK 8
#define FE_HAS_CARRIER 16
#define FE_HAS_VITERBI 32
#define FE_HAS_SYNC 64
#define FE_TUNER_HAS_LOCK 128
/* possible values for spectral inversion */
typedef enum {
INVERSION_OFF,
INVERSION_ON,
INVERSION_AUTO
} SpectralInversion;
/* possible values for FEC_inner/FEC_outer */
typedef enum {
FEC_AUTO,
FEC_1_2,
FEC_2_3,
FEC_3_4,
FEC_5_6,
FEC_7_8,
FEC_NONE
} CodeRate;
typedef enum {
QPSK,
QAM_16,
QAM_32,
QAM_64,
QAM_128,
QAM_256
} Modulation;
typedef enum {
TRANSMISSION_MODE_2K,
TRANSMISSION_MODE_8K
} TransmitMode;
typedef enum {
BANDWIDTH_8_MHZ,
BANDWIDTH_7_MHZ,
BANDWIDTH_6_MHZ
} BandWidth;
typedef enum {
GUARD_INTERVAL_1_32,
GUARD_INTERVAL_1_16,
GUARD_INTERVAL_1_8,
GUARD_INTERVAL_1_4
} GuardInterval;
typedef enum {
HIERARCHY_NONE,
HIERARCHY_1,
HIERARCHY_2,
HIERARCHY_4
} Hierarchy;
typedef struct {
uint32_t SymbolRate; /* symbol rate in Symbols per second */
CodeRate FEC_inner; /* forward error correction (see above) */
} QPSKParameters;
typedef struct {
uint32_t SymbolRate; /* symbol rate in Symbols per second */
CodeRate FEC_inner; /* forward error correction (see above) */
Modulation QAM; /* modulation type (see above) */
} QAMParameters;
typedef struct {
BandWidth bandWidth;
CodeRate HP_CodeRate; /* high priority stream code rate */
CodeRate LP_CodeRate; /* low priority stream code rate */
Modulation Constellation; /* modulation type (see above) */
TransmitMode TransmissionMode;
GuardInterval guardInterval;
Hierarchy HierarchyInformation;
} OFDMParameters;
typedef enum {
FE_QPSK,
FE_QAM,
FE_OFDM
} FrontendType;
typedef struct {
uint32_t Frequency; /* (absolute) frequency in Hz for QAM/OFDM */
/* intermediate frequency in kHz for QPSK */
SpectralInversion Inversion; /* spectral inversion */
union {
QPSKParameters qpsk;
QAMParameters qam;
OFDMParameters ofdm;
} u;
} FrontendParameters;
typedef enum {
FE_UNEXPECTED_EV, /* unexpected event (e.g. loss of lock) */
FE_COMPLETION_EV, /* completion event, tuning succeeded */
FE_FAILURE_EV /* failure event, we couldn't tune */
} EventType;
typedef struct {
EventType type; /* type of event, FE_UNEXPECTED_EV, ... */
long timestamp; /* time in seconds since 1970-01-01 */
union {
struct {
FrontendStatus previousStatus; /* status before event */
FrontendStatus currentStatus; /* status during event */
} unexpectedEvent;
FrontendParameters completionEvent; /* parameters for which the
tuning succeeded */
FrontendStatus failureEvent; /* status at failure (e.g. no lock) */
} u;
} FrontendEvent;
typedef struct {
FrontendType type;
uint32_t minFrequency;
uint32_t maxFrequency;
uint32_t maxSymbolRate;
uint32_t minSymbolRate;
uint32_t hwType;
uint32_t hwVersion;
} FrontendInfo;
typedef enum {
FE_POWER_ON,
FE_POWER_STANDBY,
FE_POWER_SUSPEND,
FE_POWER_OFF
} FrontendPowerState;
#define FE_SELFTEST _IO('o', 61)
#define FE_SET_POWER_STATE _IOW('o', 62, FrontendPowerState)
#define FE_GET_POWER_STATE _IOR('o', 63, FrontendPowerState*)
#define FE_READ_STATUS _IOR('o', 64, FrontendStatus*)
#define FE_READ_BER _IOW('o', 65, uint32_t*)
#define FE_READ_SIGNAL_STRENGTH _IOR('o', 66, __s32*)
#define FE_READ_SNR _IOR('o', 67, __s32*)
#define FE_READ_UNCORRECTED_BLOCKS _IOW('o', 68, uint32_t*)
#define FE_GET_NEXT_FREQUENCY _IOW('o', 69, uint32_t*)
#define FE_GET_NEXT_SYMBOL_RATE _IOW('o', 70, uint32_t*)
#define FE_SET_FRONTEND _IOW('o', 71, FrontendParameters*)
#define FE_GET_FRONTEND _IOR('o', 72, FrontendParameters*)
#define FE_GET_INFO _IOR('o', 73, FrontendInfo*)
#define FE_GET_EVENT _IOR('o', 74, FrontendEvent*)
#endif /*_FRONTEND_H_*/
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