/*
 * 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_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
} 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
} 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;
};



#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_GET_EVENT		   _IOR('o', 78, struct dvb_frontend_event)

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

#endif /*_DVBFRONTEND_H_*/
