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/*
* dvb_frontend.h
*
* Copyright (C) 2001 convergence integrated media GmbH
* Copyright (C) 2004 convergence GmbH
*
* Written by Ralph Metzler
* Overhauled by Holger Waechtler
* Kernel I2C stuff by Michael Hunold <hunold@convergence.de>
*
* 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 _DVB_FRONTEND_H_
#define _DVB_FRONTEND_H_
#include <linux/types.h>
#include <linux/sched.h>
#include <linux/ioctl.h>
#include <linux/i2c.h>
#include <linux/module.h>
#include <linux/errno.h>
#include <linux/delay.h>
#include <linux/dvb/frontend.h>
#include "dvbdev.h"
struct dvb_frontend_tune_settings {
int min_delay_ms;
int step_size;
int max_drift;
struct dvb_frontend_parameters parameters;
};
struct dvb_frontend;
struct dvb_tuner_info {
char name[128];
u32 frequency_min;
u32 frequency_max;
u32 frequency_step;
u32 bandwidth_min;
u32 bandwidth_max;
u32 bandwidth_step;
};
struct dvb_tuner_ops {
/**
* Description of the tuner.
*/
struct dvb_tuner_info info;
/**
* Cleanup an attached tuner.
*
* @param fe dvb_frontend structure to clean it up from.
* @return 0 on success, <0 on failure.
*/
int (*release)(struct dvb_frontend *fe);
/**
* Initialise a tuner.
*
* @param fe dvb_frontend structure.
* @return 0 on success, <0 on failure.
*/
int (*init)(struct dvb_frontend *fe);
/**
* Set a tuner into low power mode.
*
* @param fe dvb_frontend structure.
* @return 0 on success, <0 on failure.
*/
int (*sleep)(struct dvb_frontend *fe);
/**
* This is for simple PLLs - set all parameters in one go.
*
* @param fe The dvb_frontend structure.
* @param p The parameters to set.
* @return 0 on success, <0 on failure.
*/
int (*set_params)(struct dvb_frontend *fe, struct dvb_frontend_parameters *p);
/**
* This is support for demods like the mt352 - fills out the supplied buffer with what to write.
*
* @param fe The dvb_frontend structure.
* @param p The parameters to set.
* @param buf The buffer to fill with data. For an i2c tuner, the first byte should be the tuner i2c address in linux format.
* @param buf_len Size of buffer in bytes.
* @return Number of bytes used, or <0 on failure.
*/
int (*pllbuf)(struct dvb_frontend *fe, struct dvb_frontend_parameters *p, u8 *buf, int buf_len);
/**
* Get the frequency the tuner was actually set to.
*
* @param fe The dvb_frontend structure.
* @param frequency Where to put it.
* @return 0 on success, or <0 on failure.
*/
int (*get_frequency)(struct dvb_frontend *fe, u32 *frequency);
/**
* Get the bandwidth the tuner was actually set to.
*
* @param fe The dvb_frontend structure.
* @param bandwidth Where to put it.
* @return 0 on success, or <0 on failure.
*/
int (*get_bandwidth)(struct dvb_frontend *fe, u32 *bandwidth);
/**
* Get the tuner's status.
*
* @param fe The dvb_frontend structure.
* @param status Where to put it.
* @return 0 on success, or <0 on failure.
*/
#define TUNER_STATUS_LOCKED 1
int (*get_status)(struct dvb_frontend *fe, u32 *status);
/**
* Set the frequency of the tuner - for complex tuners.
*
* @param fe The dvb_frontend structure.
* @param frequency What to set.
* @return 0 on success, or <0 on failure.
*/
int (*set_frequency)(struct dvb_frontend *fe, u32 frequency);
/**
* Set the bandwidth of the tuner - for complex tuners.
*
* @param fe The dvb_frontend structure.
* @param bandwidth What to set.
* @return 0 on success, or <0 on failure.
*/
int (*set_bandwidth)(struct dvb_frontend *fe, u32 bandwidth);
};
struct dvb_frontend_ops {
struct dvb_frontend_info info;
void (*release)(struct dvb_frontend* fe);
int (*init)(struct dvb_frontend* fe);
int (*sleep)(struct dvb_frontend* fe);
/* if this is set, it overrides the default swzigzag */
int (*tune)(struct dvb_frontend* fe,
struct dvb_frontend_parameters* params,
unsigned int mode_flags,
int *delay,
fe_status_t *status);
/* these two are only used for the swzigzag code */
int (*set_frontend)(struct dvb_frontend* fe, struct dvb_frontend_parameters* params);
int (*get_tune_settings)(struct dvb_frontend* fe, struct dvb_frontend_tune_settings* settings);
int (*get_frontend)(struct dvb_frontend* fe, struct dvb_frontend_parameters* params);
int (*read_status)(struct dvb_frontend* fe, fe_status_t* status);
int (*read_ber)(struct dvb_frontend* fe, u32* ber);
int (*read_signal_strength)(struct dvb_frontend* fe, u16* strength);
int (*read_snr)(struct dvb_frontend* fe, u16* snr);
int (*read_ucblocks)(struct dvb_frontend* fe, u32* ucblocks);
int (*diseqc_reset_overload)(struct dvb_frontend* fe);
int (*diseqc_send_master_cmd)(struct dvb_frontend* fe, struct dvb_diseqc_master_cmd* cmd);
int (*diseqc_recv_slave_reply)(struct dvb_frontend* fe, struct dvb_diseqc_slave_reply* reply);
int (*diseqc_send_burst)(struct dvb_frontend* fe, fe_sec_mini_cmd_t minicmd);
int (*set_tone)(struct dvb_frontend* fe, fe_sec_tone_mode_t tone);
int (*set_voltage)(struct dvb_frontend* fe, fe_sec_voltage_t voltage);
int (*enable_high_lnb_voltage)(struct dvb_frontend* fe, long arg);
int (*dishnetwork_send_legacy_command)(struct dvb_frontend* fe, unsigned long cmd);
int (*i2c_gate_ctrl)(struct dvb_frontend* fe, int enable);
struct dvb_tuner_ops tuner_ops;
};
#define MAX_EVENT 8
struct dvb_fe_events {
struct dvb_frontend_event events[MAX_EVENT];
int eventw;
int eventr;
int overflow;
wait_queue_head_t wait_queue;
struct semaphore sem;
};
struct dvb_frontend {
struct dvb_frontend_ops* ops;
struct dvb_adapter *dvb;
void* demodulator_priv;
void* tuner_priv;
void* frontend_priv;
void* misc_priv;
};
extern int dvb_register_frontend(struct dvb_adapter* dvb,
struct dvb_frontend* fe);
extern int dvb_unregister_frontend(struct dvb_frontend* fe);
extern void dvb_frontend_reinitialise(struct dvb_frontend *fe);
extern void dvb_frontend_sleep_until(struct timeval *waketime, u32 add_usec);
extern s32 timeval_usec_diff(struct timeval lasttime, struct timeval curtime);
#endif
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