/*
 * 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 <asm/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_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;
	__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;


typedef enum fe_status {
	FE_HAS_SIGNAL	= 0x01,   /* found something above the noise level */
	FE_HAS_CARRIER	= 0x02,   /* found a DVB signal  */
	FE_HAS_VITERBI	= 0x04,   /* FEC is stable  */
	FE_HAS_SYNC	= 0x08,   /* found sync bytes  */
	FE_HAS_LOCK	= 0x10,   /* everything's working... */
	FE_TIMEDOUT	= 0x20,   /* no lock within the last ~2 seconds */
	FE_REINIT	= 0x40    /* frontend was reinitialized,  */
} fe_status_t;			  /* application is recommended to reset */
				  /* DiSEqC, tone and parameters */

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,
} 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,
} fe_modulation_t;

typedef enum fe_transmit_mode {
	TRANSMISSION_MODE_2K,
	TRANSMISSION_MODE_8K,
	TRANSMISSION_MODE_AUTO
} fe_transmit_mode_t;

typedef enum fe_bandwidth {
	BANDWIDTH_8_MHZ,
	BANDWIDTH_7_MHZ,
	BANDWIDTH_6_MHZ,
	BANDWIDTH_AUTO
} 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
} fe_guard_interval_t;


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


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

#define DTV_API_VERSION				35
#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_MAX_COMMAND				DTV_HIERARCHY

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_AC,
	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_DMBTH,
	SYS_CMMB,
	SYS_DAB,
} fe_delivery_system_t;

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 */
};

struct dtv_property {
	__u32 cmd;
	__u32 reserved[3];
	union {
		__u32 data;
		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_*/