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Filename : frontend.h
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/*
 * frontend.h
 *
 * Copyright (C) 2000 Marcus Metzler <marcus@convergence.de>
 *		    Ralph  Metzler <ralph@convergence.de>
 *		    Holger Waechtler <holger@convergence.de>
 *		    Andre Draszik <ad@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 _DVBFRONTEND_H_
#define _DVBFRONTEND_H_

#include <linux/types.h>

typedef enum fe_type {
	FE_QPSK,
	FE_QAM,
	FE_OFDM,
	FE_ATSC
} fe_type_t;


typedef enum fe_caps {
	FE_IS_STUPID			= 0,
	FE_CAN_INVERSION_AUTO		= 0x1,
	FE_CAN_FEC_1_2			= 0x2,
	FE_CAN_FEC_2_3			= 0x4,
	FE_CAN_FEC_3_4			= 0x8,
	FE_CAN_FEC_4_5			= 0x10,
	FE_CAN_FEC_5_6			= 0x20,
	FE_CAN_FEC_6_7			= 0x40,
	FE_CAN_FEC_7_8			= 0x80,
	FE_CAN_FEC_8_9			= 0x100,
	FE_CAN_FEC_AUTO			= 0x200,
	FE_CAN_QPSK			= 0x400,
	FE_CAN_QAM_16			= 0x800,
	FE_CAN_QAM_32			= 0x1000,
	FE_CAN_QAM_64			= 0x2000,
	FE_CAN_QAM_128			= 0x4000,
	FE_CAN_QAM_256			= 0x8000,
	FE_CAN_QAM_AUTO			= 0x10000,
	FE_CAN_TRANSMISSION_MODE_AUTO	= 0x20000,
	FE_CAN_BANDWIDTH_AUTO		= 0x40000,
	FE_CAN_GUARD_INTERVAL_AUTO	= 0x80000,
	FE_CAN_HIERARCHY_AUTO		= 0x100000,
	FE_CAN_8VSB			= 0x200000,
	FE_CAN_16VSB			= 0x400000,
	FE_HAS_EXTENDED_CAPS		= 0x800000,   /* We need more bitspace for newer APIs, indicate this. */
	FE_CAN_MULTISTREAM		= 0x4000000,  /* frontend supports multistream filtering */
	FE_CAN_TURBO_FEC		= 0x8000000,  /* frontend supports "turbo fec modulation" */
	FE_CAN_2G_MODULATION		= 0x10000000, /* frontend supports "2nd generation modulation" (DVB-S2) */
	FE_NEEDS_BENDING		= 0x20000000, /* not supported anymore, don't use (frontend requires frequency bending) */
	FE_CAN_RECOVER			= 0x40000000, /* frontend can recover from a cable unplug automatically */
	FE_CAN_MUTE_TS			= 0x80000000  /* frontend can stop spurious TS data output */
} fe_caps_t;


struct dvb_frontend_info {
	char       name[128];
	fe_type_t  type;			/* DEPRECATED. Use DTV_ENUM_DELSYS instead */
	__u32      frequency_min;
	__u32      frequency_max;
	__u32      frequency_stepsize;
	__u32      frequency_tolerance;
	__u32      symbol_rate_min;
	__u32      symbol_rate_max;
	__u32      symbol_rate_tolerance;	/* ppm */
	__u32      notifier_delay;		/* DEPRECATED */
	fe_caps_t  caps;
};


/**
 *  Check out the DiSEqC bus spec available on http://www.eutelsat.org/ for
 *  the meaning of this struct...
 */
struct dvb_diseqc_master_cmd {
	__u8 msg [6];	/*  { framing, address, command, data [3] } */
	__u8 msg_len;	/*  valid values are 3...6  */
};


struct dvb_diseqc_slave_reply {
	__u8 msg [4];	/*  { framing, data [3] } */
	__u8 msg_len;	/*  valid values are 0...4, 0 means no msg  */
	int  timeout;	/*  return from ioctl after timeout ms with */
};			/*  errorcode when no message was received  */


typedef enum fe_sec_voltage {
	SEC_VOLTAGE_13,
	SEC_VOLTAGE_18,
	SEC_VOLTAGE_OFF
} fe_sec_voltage_t;


typedef enum fe_sec_tone_mode {
	SEC_TONE_ON,
	SEC_TONE_OFF
} fe_sec_tone_mode_t;


typedef enum fe_sec_mini_cmd {
	SEC_MINI_A,
	SEC_MINI_B
} fe_sec_mini_cmd_t;


/**
 * enum fe_status - enumerates the possible frontend status
 * @FE_HAS_SIGNAL:	found something above the noise level
 * @FE_HAS_CARRIER:	found a DVB signal
 * @FE_HAS_VITERBI:	FEC is stable
 * @FE_HAS_SYNC:	found sync bytes
 * @FE_HAS_LOCK:	everything's working
 * @FE_TIMEDOUT:	no lock within the last ~2 seconds
 * @FE_REINIT:		frontend was reinitialized, application is recommended
 *			to reset DiSEqC, tone and parameters
 */

typedef enum fe_status {
	FE_HAS_SIGNAL		= 0x01,
	FE_HAS_CARRIER		= 0x02,
	FE_HAS_VITERBI		= 0x04,
	FE_HAS_SYNC		= 0x08,
	FE_HAS_LOCK		= 0x10,
	FE_TIMEDOUT		= 0x20,
	FE_REINIT		= 0x40,
} fe_status_t;

typedef enum fe_spectral_inversion {
	INVERSION_OFF,
	INVERSION_ON,
	INVERSION_AUTO
} fe_spectral_inversion_t;


typedef enum fe_code_rate {
	FEC_NONE = 0,
	FEC_1_2,
	FEC_2_3,
	FEC_3_4,
	FEC_4_5,
	FEC_5_6,
	FEC_6_7,
	FEC_7_8,
	FEC_8_9,
	FEC_AUTO,
	FEC_3_5,
	FEC_9_10,
	FEC_2_5,
} fe_code_rate_t;


typedef enum fe_modulation {
	QPSK,
	QAM_16,
	QAM_32,
	QAM_64,
	QAM_128,
	QAM_256,
	QAM_AUTO,
	VSB_8,
	VSB_16,
	PSK_8,
	APSK_16,
	APSK_32,
	DQPSK,
	QAM_4_NR,
} fe_modulation_t;

typedef enum fe_transmit_mode {
	TRANSMISSION_MODE_2K,
	TRANSMISSION_MODE_8K,
	TRANSMISSION_MODE_AUTO,
	TRANSMISSION_MODE_4K,
	TRANSMISSION_MODE_1K,
	TRANSMISSION_MODE_16K,
	TRANSMISSION_MODE_32K,
	TRANSMISSION_MODE_C1,
	TRANSMISSION_MODE_C3780,
} fe_transmit_mode_t;

typedef enum fe_bandwidth {
	BANDWIDTH_8_MHZ,
	BANDWIDTH_7_MHZ,
	BANDWIDTH_6_MHZ,
	BANDWIDTH_AUTO,
	BANDWIDTH_5_MHZ,
	BANDWIDTH_10_MHZ,
	BANDWIDTH_1_712_MHZ,
} fe_bandwidth_t;

typedef enum fe_guard_interval {
	GUARD_INTERVAL_1_32,
	GUARD_INTERVAL_1_16,
	GUARD_INTERVAL_1_8,
	GUARD_INTERVAL_1_4,
	GUARD_INTERVAL_AUTO,
	GUARD_INTERVAL_1_128,
	GUARD_INTERVAL_19_128,
	GUARD_INTERVAL_19_256,
	GUARD_INTERVAL_PN420,
	GUARD_INTERVAL_PN595,
	GUARD_INTERVAL_PN945,
} fe_guard_interval_t;


typedef enum fe_hierarchy {
	HIERARCHY_NONE,
	HIERARCHY_1,
	HIERARCHY_2,
	HIERARCHY_4,
	HIERARCHY_AUTO
} fe_hierarchy_t;

enum fe_interleaving {
	INTERLEAVING_NONE,
	INTERLEAVING_AUTO,
	INTERLEAVING_240,
	INTERLEAVING_720,
};

struct dvb_qpsk_parameters {
	__u32		symbol_rate;  /* symbol rate in Symbols per second */
	fe_code_rate_t	fec_inner;    /* forward error correction (see above) */
};

struct dvb_qam_parameters {
	__u32		symbol_rate; /* symbol rate in Symbols per second */
	fe_code_rate_t	fec_inner;   /* forward error correction (see above) */
	fe_modulation_t	modulation;  /* modulation type (see above) */
};

struct dvb_vsb_parameters {
	fe_modulation_t	modulation;  /* modulation type (see above) */
};

struct dvb_ofdm_parameters {
	fe_bandwidth_t      bandwidth;
	fe_code_rate_t      code_rate_HP;  /* high priority stream code rate */
	fe_code_rate_t      code_rate_LP;  /* low priority stream code rate */
	fe_modulation_t     constellation; /* modulation type (see above) */
	fe_transmit_mode_t  transmission_mode;
	fe_guard_interval_t guard_interval;
	fe_hierarchy_t      hierarchy_information;
};


struct dvb_frontend_parameters {
	__u32 frequency;     /* (absolute) frequency in Hz for QAM/OFDM/ATSC */
			     /* intermediate frequency in kHz for QPSK */
	fe_spectral_inversion_t inversion;
	union {
		struct dvb_qpsk_parameters qpsk;
		struct dvb_qam_parameters  qam;
		struct dvb_ofdm_parameters ofdm;
		struct dvb_vsb_parameters vsb;
	} u;
};

struct dvb_frontend_event {
	fe_status_t status;
	struct dvb_frontend_parameters parameters;
};

/* S2API Commands */
#define DTV_UNDEFINED		0
#define DTV_TUNE		1
#define DTV_CLEAR		2
#define DTV_FREQUENCY		3
#define DTV_MODULATION		4
#define DTV_BANDWIDTH_HZ	5
#define DTV_INVERSION		6
#define DTV_DISEQC_MASTER	7
#define DTV_SYMBOL_RATE		8
#define DTV_INNER_FEC		9
#define DTV_VOLTAGE		10
#define DTV_TONE		11
#define DTV_PILOT		12
#define DTV_ROLLOFF		13
#define DTV_DISEQC_SLAVE_REPLY	14

/* Basic enumeration set for querying unlimited capabilities */
#define DTV_FE_CAPABILITY_COUNT	15
#define DTV_FE_CAPABILITY	16
#define DTV_DELIVERY_SYSTEM	17

/* ISDB-T and ISDB-Tsb */
#define DTV_ISDBT_PARTIAL_RECEPTION	18
#define DTV_ISDBT_SOUND_BROADCASTING	19

#define DTV_ISDBT_SB_SUBCHANNEL_ID	20
#define DTV_ISDBT_SB_SEGMENT_IDX	21
#define DTV_ISDBT_SB_SEGMENT_COUNT	22

#define DTV_ISDBT_LAYERA_FEC			23
#define DTV_ISDBT_LAYERA_MODULATION		24
#define DTV_ISDBT_LAYERA_SEGMENT_COUNT		25
#define DTV_ISDBT_LAYERA_TIME_INTERLEAVING	26

#define DTV_ISDBT_LAYERB_FEC			27
#define DTV_ISDBT_LAYERB_MODULATION		28
#define DTV_ISDBT_LAYERB_SEGMENT_COUNT		29
#define DTV_ISDBT_LAYERB_TIME_INTERLEAVING	30

#define DTV_ISDBT_LAYERC_FEC			31
#define DTV_ISDBT_LAYERC_MODULATION		32
#define DTV_ISDBT_LAYERC_SEGMENT_COUNT		33
#define DTV_ISDBT_LAYERC_TIME_INTERLEAVING	34

#define DTV_API_VERSION		35

#define DTV_CODE_RATE_HP	36
#define DTV_CODE_RATE_LP	37
#define DTV_GUARD_INTERVAL	38
#define DTV_TRANSMISSION_MODE	39
#define DTV_HIERARCHY		40

#define DTV_ISDBT_LAYER_ENABLED	41

#define DTV_STREAM_ID		42
#define DTV_ISDBS_TS_ID_LEGACY	DTV_STREAM_ID
#define DTV_DVBT2_PLP_ID_LEGACY	43

#define DTV_ENUM_DELSYS		44

/* ATSC-MH */
#define DTV_ATSCMH_FIC_VER		45
#define DTV_ATSCMH_PARADE_ID		46
#define DTV_ATSCMH_NOG			47
#define DTV_ATSCMH_TNOG			48
#define DTV_ATSCMH_SGN			49
#define DTV_ATSCMH_PRC			50
#define DTV_ATSCMH_RS_FRAME_MODE	51
#define DTV_ATSCMH_RS_FRAME_ENSEMBLE	52
#define DTV_ATSCMH_RS_CODE_MODE_PRI	53
#define DTV_ATSCMH_RS_CODE_MODE_SEC	54
#define DTV_ATSCMH_SCCC_BLOCK_MODE	55
#define DTV_ATSCMH_SCCC_CODE_MODE_A	56
#define DTV_ATSCMH_SCCC_CODE_MODE_B	57
#define DTV_ATSCMH_SCCC_CODE_MODE_C	58
#define DTV_ATSCMH_SCCC_CODE_MODE_D	59

#define DTV_INTERLEAVING			60
#define DTV_LNA					61

/* Quality parameters */
#define DTV_STAT_SIGNAL_STRENGTH	62
#define DTV_STAT_CNR			63
#define DTV_STAT_PRE_ERROR_BIT_COUNT	64
#define DTV_STAT_PRE_TOTAL_BIT_COUNT	65
#define DTV_STAT_POST_ERROR_BIT_COUNT	66
#define DTV_STAT_POST_TOTAL_BIT_COUNT	67
#define DTV_STAT_ERROR_BLOCK_COUNT	68
#define DTV_STAT_TOTAL_BLOCK_COUNT	69

#define DTV_MAX_COMMAND		DTV_STAT_TOTAL_BLOCK_COUNT

typedef enum fe_pilot {
	PILOT_ON,
	PILOT_OFF,
	PILOT_AUTO,
} fe_pilot_t;

typedef enum fe_rolloff {
	ROLLOFF_35, /* Implied value in DVB-S, default for DVB-S2 */
	ROLLOFF_20,
	ROLLOFF_25,
	ROLLOFF_AUTO,
} fe_rolloff_t;

typedef enum fe_delivery_system {
	SYS_UNDEFINED,
	SYS_DVBC_ANNEX_A,
	SYS_DVBC_ANNEX_B,
	SYS_DVBT,
	SYS_DSS,
	SYS_DVBS,
	SYS_DVBS2,
	SYS_DVBH,
	SYS_ISDBT,
	SYS_ISDBS,
	SYS_ISDBC,
	SYS_ATSC,
	SYS_ATSCMH,
	SYS_DTMB,
	SYS_CMMB,
	SYS_DAB,
	SYS_DVBT2,
	SYS_TURBO,
	SYS_DVBC_ANNEX_C,
} fe_delivery_system_t;

/* backward compatibility */
#define SYS_DVBC_ANNEX_AC	SYS_DVBC_ANNEX_A
#define SYS_DMBTH SYS_DTMB /* DMB-TH is legacy name, use DTMB instead */

/* ATSC-MH */

enum atscmh_sccc_block_mode {
	ATSCMH_SCCC_BLK_SEP      = 0,
	ATSCMH_SCCC_BLK_COMB     = 1,
	ATSCMH_SCCC_BLK_RES      = 2,
};

enum atscmh_sccc_code_mode {
	ATSCMH_SCCC_CODE_HLF     = 0,
	ATSCMH_SCCC_CODE_QTR     = 1,
	ATSCMH_SCCC_CODE_RES     = 2,
};

enum atscmh_rs_frame_ensemble {
	ATSCMH_RSFRAME_ENS_PRI   = 0,
	ATSCMH_RSFRAME_ENS_SEC   = 1,
};

enum atscmh_rs_frame_mode {
	ATSCMH_RSFRAME_PRI_ONLY  = 0,
	ATSCMH_RSFRAME_PRI_SEC   = 1,
	ATSCMH_RSFRAME_RES       = 2,
};

enum atscmh_rs_code_mode {
	ATSCMH_RSCODE_211_187    = 0,
	ATSCMH_RSCODE_223_187    = 1,
	ATSCMH_RSCODE_235_187    = 2,
	ATSCMH_RSCODE_RES        = 3,
};

#define NO_STREAM_ID_FILTER	(~0U)
#define LNA_AUTO                (~0U)

struct dtv_cmds_h {
	char	*name;		/* A display name for debugging purposes */

	__u32	cmd;		/* A unique ID */

	/* Flags */
	__u32	set:1;		/* Either a set or get property */
	__u32	buffer:1;	/* Does this property use the buffer? */
	__u32	reserved:30;	/* Align */
};

/**
 * Scale types for the quality parameters.
 * @FE_SCALE_NOT_AVAILABLE: That QoS measure is not available. That
 *			    could indicate a temporary or a permanent
 *			    condition.
 * @FE_SCALE_DECIBEL: The scale is measured in 0.0001 dB steps, typically
 *		  used on signal measures.
 * @FE_SCALE_RELATIVE: The scale is a relative percentual measure,
 *			ranging from 0 (0%) to 0xffff (100%).
 * @FE_SCALE_COUNTER: The scale counts the occurrence of an event, like
 *			bit error, block error, lapsed time.
 */
enum fecap_scale_params {
	FE_SCALE_NOT_AVAILABLE = 0,
	FE_SCALE_DECIBEL,
	FE_SCALE_RELATIVE,
	FE_SCALE_COUNTER
};

/**
 * struct dtv_stats - Used for reading a DTV status property
 *
 * @value:	value of the measure. Should range from 0 to 0xffff;
 * @scale:	Filled with enum fecap_scale_params - the scale
 *		in usage for that parameter
 *
 * For most delivery systems, this will return a single value for each
 * parameter.
 * It should be noticed, however, that new OFDM delivery systems like
 * ISDB can use different modulation types for each group of carriers.
 * On such standards, up to 8 groups of statistics can be provided, one
 * for each carrier group (called "layer" on ISDB).
 * In order to be consistent with other delivery systems, the first
 * value refers to the entire set of carriers ("global").
 * dtv_status:scale should use the value FE_SCALE_NOT_AVAILABLE when
 * the value for the entire group of carriers or from one specific layer
 * is not provided by the hardware.
 * st.len should be filled with the latest filled status + 1.
 *
 * In other words, for ISDB, those values should be filled like:
 *	u.st.stat.svalue[0] = global statistics;
 *	u.st.stat.scale[0] = FE_SCALE_DECIBELS;
 *	u.st.stat.value[1] = layer A statistics;
 *	u.st.stat.scale[1] = FE_SCALE_NOT_AVAILABLE (if not available);
 *	u.st.stat.svalue[2] = layer B statistics;
 *	u.st.stat.scale[2] = FE_SCALE_DECIBELS;
 *	u.st.stat.svalue[3] = layer C statistics;
 *	u.st.stat.scale[3] = FE_SCALE_DECIBELS;
 *	u.st.len = 4;
 */
struct dtv_stats {
	__u8 scale;	/* enum fecap_scale_params type */
	union {
		__u64 uvalue;	/* for counters and relative scales */
		__s64 svalue;	/* for 0.0001 dB measures */
	};
} __attribute__ ((packed));


#define MAX_DTV_STATS   4

struct dtv_fe_stats {
	__u8 len;
	struct dtv_stats stat[MAX_DTV_STATS];
} __attribute__ ((packed));

struct dtv_property {
	__u32 cmd;
	__u32 reserved[3];
	union {
		__u32 data;
		struct dtv_fe_stats st;
		struct {
			__u8 data[32];
			__u32 len;
			__u32 reserved1[3];
			void *reserved2;
		} buffer;
	} u;
	int result;
} __attribute__ ((packed));

/* num of properties cannot exceed DTV_IOCTL_MAX_MSGS per ioctl */
#define DTV_IOCTL_MAX_MSGS 64

struct dtv_properties {
	__u32 num;
	struct dtv_property *props;
};

#define FE_SET_PROPERTY		   _IOW('o', 82, struct dtv_properties)
#define FE_GET_PROPERTY		   _IOR('o', 83, struct dtv_properties)


/**
 * When set, this flag will disable any zigzagging or other "normal" tuning
 * behaviour. Additionally, there will be no automatic monitoring of the lock
 * status, and hence no frontend events will be generated. If a frontend device
 * is closed, this flag will be automatically turned off when the device is
 * reopened read-write.
 */
#define FE_TUNE_MODE_ONESHOT 0x01


#define FE_GET_INFO		   _IOR('o', 61, struct dvb_frontend_info)

#define FE_DISEQC_RESET_OVERLOAD   _IO('o', 62)
#define FE_DISEQC_SEND_MASTER_CMD  _IOW('o', 63, struct dvb_diseqc_master_cmd)
#define FE_DISEQC_RECV_SLAVE_REPLY _IOR('o', 64, struct dvb_diseqc_slave_reply)
#define FE_DISEQC_SEND_BURST       _IO('o', 65)  /* fe_sec_mini_cmd_t */

#define FE_SET_TONE		   _IO('o', 66)  /* fe_sec_tone_mode_t */
#define FE_SET_VOLTAGE		   _IO('o', 67)  /* fe_sec_voltage_t */
#define FE_ENABLE_HIGH_LNB_VOLTAGE _IO('o', 68)  /* int */

#define FE_READ_STATUS		   _IOR('o', 69, fe_status_t)
#define FE_READ_BER		   _IOR('o', 70, __u32)
#define FE_READ_SIGNAL_STRENGTH    _IOR('o', 71, __u16)
#define FE_READ_SNR		   _IOR('o', 72, __u16)
#define FE_READ_UNCORRECTED_BLOCKS _IOR('o', 73, __u32)

#define FE_SET_FRONTEND		   _IOW('o', 76, struct dvb_frontend_parameters)
#define FE_GET_FRONTEND		   _IOR('o', 77, struct dvb_frontend_parameters)
#define FE_SET_FRONTEND_TUNE_MODE  _IO('o', 81) /* unsigned int */
#define FE_GET_EVENT		   _IOR('o', 78, struct dvb_frontend_event)

#define FE_DISHNETWORK_SEND_LEGACY_CMD _IO('o', 80) /* unsigned int */

#endif /*_DVBFRONTEND_H_*/