- 根目录:
- drivers
- media
- dvb
- dvb-core
- dvb_frontend.h
/*
* 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/mutex.h>
#include <linux/slab.h>
#include <linux/dvb/frontend.h>
#include "dvbdev.h"
/*
* Maximum number of Delivery systems per frontend. It
* should be smaller or equal to 32
*/
#define MAX_DELSYS 8
struct dvb_frontend_tune_settings {
int min_delay_ms;
int step_size;
int max_drift;
};
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 analog_parameters {
unsigned int frequency;
unsigned int mode;
unsigned int audmode;
u64 std;
};
enum dvbfe_modcod {
DVBFE_MODCOD_DUMMY_PLFRAME = 0,
DVBFE_MODCOD_QPSK_1_4,
DVBFE_MODCOD_QPSK_1_3,
DVBFE_MODCOD_QPSK_2_5,
DVBFE_MODCOD_QPSK_1_2,
DVBFE_MODCOD_QPSK_3_5,
DVBFE_MODCOD_QPSK_2_3,
DVBFE_MODCOD_QPSK_3_4,
DVBFE_MODCOD_QPSK_4_5,
DVBFE_MODCOD_QPSK_5_6,
DVBFE_MODCOD_QPSK_8_9,
DVBFE_MODCOD_QPSK_9_10,
DVBFE_MODCOD_8PSK_3_5,
DVBFE_MODCOD_8PSK_2_3,
DVBFE_MODCOD_8PSK_3_4,
DVBFE_MODCOD_8PSK_5_6,
DVBFE_MODCOD_8PSK_8_9,
DVBFE_MODCOD_8PSK_9_10,
DVBFE_MODCOD_16APSK_2_3,
DVBFE_MODCOD_16APSK_3_4,
DVBFE_MODCOD_16APSK_4_5,
DVBFE_MODCOD_16APSK_5_6,
DVBFE_MODCOD_16APSK_8_9,
DVBFE_MODCOD_16APSK_9_10,
DVBFE_MODCOD_32APSK_3_4,
DVBFE_MODCOD_32APSK_4_5,
DVBFE_MODCOD_32APSK_5_6,
DVBFE_MODCOD_32APSK_8_9,
DVBFE_MODCOD_32APSK_9_10,
DVBFE_MODCOD_RESERVED_1,
DVBFE_MODCOD_BPSK_1_3,
DVBFE_MODCOD_BPSK_1_4,
DVBFE_MODCOD_RESERVED_2
};
enum tuner_param {
DVBFE_TUNER_FREQUENCY = (1 << 0),
DVBFE_TUNER_TUNERSTEP = (1 << 1),
DVBFE_TUNER_IFFREQ = (1 << 2),
DVBFE_TUNER_BANDWIDTH = (1 << 3),
DVBFE_TUNER_REFCLOCK = (1 << 4),
DVBFE_TUNER_IQSENSE = (1 << 5),
DVBFE_TUNER_DUMMY = (1 << 31)
};
/*
* ALGO_HW: (Hardware Algorithm)
* ----------------------------------------------------------------
* Devices that support this algorithm do everything in hardware
* and no software support is needed to handle them.
* Requesting these devices to LOCK is the only thing required,
* device is supposed to do everything in the hardware.
*
* ALGO_SW: (Software Algorithm)
* ----------------------------------------------------------------
* These are dumb devices, that require software to do everything
*
* ALGO_CUSTOM: (Customizable Agorithm)
* ----------------------------------------------------------------
* Devices having this algorithm can be customized to have specific
* algorithms in the frontend driver, rather than simply doing a
* software zig-zag. In this case the zigzag maybe hardware assisted
* or it maybe completely done in hardware. In all cases, usage of
* this algorithm, in conjunction with the search and track
* callbacks, utilizes the driver specific algorithm.
*
* ALGO_RECOVERY: (Recovery Algorithm)
* ----------------------------------------------------------------
* These devices have AUTO recovery capabilities from LOCK failure
*/
enum dvbfe_algo {
DVBFE_ALGO_HW = (1 << 0),
DVBFE_ALGO_SW = (1 << 1),
DVBFE_ALGO_CUSTOM = (1 << 2),
DVBFE_ALGO_RECOVERY = (1 << 31)
};
struct tuner_state {
u32 frequency;
u32 tunerstep;
u32 ifreq;
u32 bandwidth;
u32 iqsense;
u32 refclock;
};
/*
* search callback possible return status
*
* DVBFE_ALGO_SEARCH_SUCCESS
* The frontend search algorithm completed and returned successfully
*
* DVBFE_ALGO_SEARCH_ASLEEP
* The frontend search algorithm is sleeping
*
* DVBFE_ALGO_SEARCH_FAILED
* The frontend search for a signal failed
*
* DVBFE_ALGO_SEARCH_INVALID
* The frontend search algorith was probably supplied with invalid
* parameters and the search is an invalid one
*
* DVBFE_ALGO_SEARCH_ERROR
* The frontend search algorithm failed due to some error
*
* DVBFE_ALGO_SEARCH_AGAIN
* The frontend search algorithm was requested to search again
*/
enum dvbfe_search {
DVBFE_ALGO_SEARCH_SUCCESS = (1 << 0),
DVBFE_ALGO_SEARCH_ASLEEP = (1 << 1),
DVBFE_ALGO_SEARCH_FAILED = (1 << 2),
DVBFE_ALGO_SEARCH_INVALID = (1 << 3),
DVBFE_ALGO_SEARCH_AGAIN = (1 << 4),
DVBFE_ALGO_SEARCH_ERROR = (1 << 31),
};
struct dvb_tuner_ops {
struct dvb_tuner_info info;
int (*release)(struct dvb_frontend *fe);
int (*init)(struct dvb_frontend *fe);
int (*sleep)(struct dvb_frontend *fe);
/** This is for simple PLLs - set all parameters in one go. */
int (*set_params)(struct dvb_frontend *fe);
int (*set_analog_params)(struct dvb_frontend *fe, struct analog_parameters *p);
/** This is support for demods like the mt352 - fills out the supplied buffer with what to write. */
int (*calc_regs)(struct dvb_frontend *fe, u8 *buf, int buf_len);
/** This is to allow setting tuner-specific configs */
int (*set_config)(struct dvb_frontend *fe, void *priv_cfg);
int (*get_frequency)(struct dvb_frontend *fe, u32 *frequency);
int (*get_bandwidth)(struct dvb_frontend *fe, u32 *bandwidth);
int (*get_if_frequency)(struct dvb_frontend *fe, u32 *frequency);
#define TUNER_STATUS_LOCKED 1
#define TUNER_STATUS_STEREO 2
int (*get_status)(struct dvb_frontend *fe, u32 *status);
int (*get_rf_strength)(struct dvb_frontend *fe, u16 *strength);
/** These are provided separately from set_params in order to facilitate silicon
* tuners which require sophisticated tuning loops, controlling each parameter separately. */
int (*set_frequency)(struct dvb_frontend *fe, u32 frequency);
int (*set_bandwidth)(struct dvb_frontend *fe, u32 bandwidth);
/*
* These are provided separately from set_params in order to facilitate silicon
* tuners which require sophisticated tuning loops, controlling each parameter separately.
*/
int (*set_state)(struct dvb_frontend *fe, enum tuner_param param, struct tuner_state *state);
int (*get_state)(struct dvb_frontend *fe, enum tuner_param param, struct tuner_state *state);
};
struct analog_demod_info {
char *name;
};
struct analog_demod_ops {
struct analog_demod_info info;
void (*set_params)(struct dvb_frontend *fe,
struct analog_parameters *params);
int (*has_signal)(struct dvb_frontend *fe);
int (*get_afc)(struct dvb_frontend *fe);
void (*tuner_status)(struct dvb_frontend *fe);
void (*standby)(struct dvb_frontend *fe);
void (*release)(struct dvb_frontend *fe);
int (*i2c_gate_ctrl)(struct dvb_frontend *fe, int enable);
/** This is to allow setting tuner-specific configuration */
int (*set_config)(struct dvb_frontend *fe, void *priv_cfg);
};
struct dtv_frontend_properties;
struct dvb_frontend_ops {
struct dvb_frontend_info info;
u8 delsys[MAX_DELSYS];
void (*release)(struct dvb_frontend* fe);
void (*release_sec)(struct dvb_frontend* fe);
int (*init)(struct dvb_frontend* fe);
int (*sleep)(struct dvb_frontend* fe);
int (*write)(struct dvb_frontend* fe, const u8 buf[], int len);
/* if this is set, it overrides the default swzigzag */
int (*tune)(struct dvb_frontend* fe,
bool re_tune,
unsigned int mode_flags,
unsigned int *delay,
fe_status_t *status);
/* get frontend tuning algorithm from the module */
enum dvbfe_algo (*get_frontend_algo)(struct dvb_frontend *fe);
/* these two are only used for the swzigzag code */
int (*set_frontend)(struct dvb_frontend *fe);
int (*get_tune_settings)(struct dvb_frontend* fe, struct dvb_frontend_tune_settings* settings);
int (*get_frontend)(struct dvb_frontend *fe);
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);
int (*ts_bus_ctrl)(struct dvb_frontend* fe, int acquire);
/* These callbacks are for devices that implement their own
* tuning algorithms, rather than a simple swzigzag
*/
enum dvbfe_search (*search)(struct dvb_frontend *fe);
struct dvb_tuner_ops tuner_ops;
struct analog_demod_ops analog_ops;
int (*set_property)(struct dvb_frontend* fe, struct dtv_property* tvp);
int (*get_property)(struct dvb_frontend* fe, struct dtv_property* tvp);
};
#ifdef __DVB_CORE__
#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 mutex mtx;
};
#endif
struct dtv_frontend_properties {
/* Cache State */
u32 state;
u32 frequency;
fe_modulation_t modulation;
fe_sec_voltage_t voltage;
fe_sec_tone_mode_t sectone;
fe_spectral_inversion_t inversion;
fe_code_rate_t fec_inner;
fe_transmit_mode_t transmission_mode;
u32 bandwidth_hz; /* 0 = AUTO */
fe_guard_interval_t guard_interval;
fe_hierarchy_t hierarchy;
u32 symbol_rate;
fe_code_rate_t code_rate_HP;
fe_code_rate_t code_rate_LP;
fe_pilot_t pilot;
fe_rolloff_t rolloff;
fe_delivery_system_t delivery_system;
/* ISDB-T specifics */
u8 isdbt_partial_reception;
u8 isdbt_sb_mode;
u8 isdbt_sb_subchannel;
u32 isdbt_sb_segment_idx;
u32 isdbt_sb_segment_count;
u8 isdbt_layer_enabled;
struct {
u8 segment_count;
fe_code_rate_t fec;
fe_modulation_t modulation;
u8 interleaving;
} layer[3];
/* ISDB-T specifics */
u32 isdbs_ts_id;
/* DVB-T2 specifics */
u32 dvbt2_plp_id;
};
struct dvb_frontend {
struct dvb_frontend_ops ops;
struct dvb_adapter *dvb;
void *demodulator_priv;
void *tuner_priv;
void *frontend_priv;
void *sec_priv;
void *analog_demod_priv;
struct dtv_frontend_properties dtv_property_cache;
#define DVB_FRONTEND_COMPONENT_TUNER 0
#define DVB_FRONTEND_COMPONENT_DEMOD 1
int (*callback)(void *adapter_priv, int component, int cmd, int arg);
int id;
};
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_detach(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