SYNOPSIS

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);
int (* tune) (struct dvb_frontend* fe,bool re_tune,unsigned int mode_flags,unsigned int *delay,enum fe_status *status);
enum dvbfe_algo (* get_frontend_algo) (struct dvb_frontend *fe);
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,struct dtv_frontend_properties *props);
int (* read_status) (struct dvb_frontend *fe, enum fe_status *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,enum fe_sec_mini_cmd minicmd);
int (* set_tone) (struct dvb_frontend *fe, enum fe_sec_tone_mode tone);
int (* set_voltage) (struct dvb_frontend *fe,enum fe_sec_voltage 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);
int (* set_lna) (struct dvb_frontend *);
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);
};

MEMBERS

info

embedded struct dvb_tuner_info with tuner properties

delsys[MAX_DELSYS]

Delivery systems supported by the frontend

release

callback function called when frontend is dettached. drivers should free any allocated memory.

release_sec

callback function requesting that the Satelite Equipment Control (SEC) driver to release and free any memory allocated by the driver.

init

callback function used to initialize the tuner device.

sleep

callback function used to put the tuner to sleep.

write

callback function used by some demod legacy drivers to allow other drivers to write data into their registers. Should not be used on new drivers.

tune

callback function used by demod drivers that use DVBFE_ALGO_HW; to tune into a frequency.

get_frontend_algo

returns the desired hardware algorithm.

set_frontend

callback function used to inform the demod to set the parameters for demodulating a digital TV channel. The properties to be used are stored at dvb_frontend.dtv_property_cache;. The demod can change the parameters to reflect the changes needed for the channel to be decoded, and update statistics.

get_tune_settings

callback function

get_frontend

callback function used to inform the parameters actuall in use. The properties to be used are stored at dvb_frontend.dtv_property_cache; and update statistics. Please notice that it should not return an error code if the statistics are not available because the demog is not locked.

read_status

returns the locking status of the frontend.

read_ber

legacy callback function to return the bit error rate. Newer drivers should provide such info via DVBv5 API, e. g. set_frontend;/get_frontend;, implementing this callback only if DVBv3 API compatibility is wanted.

read_signal_strength

legacy callback function to return the signal strength. Newer drivers should provide such info via DVBv5 API, e. g. set_frontend;/get_frontend;, implementing this callback only if DVBv3 API compatibility is wanted.

read_snr

legacy callback function to return the Signal/Noise rate. Newer drivers should provide such info via DVBv5 API, e. g. set_frontend;/get_frontend;, implementing this callback only if DVBv3 API compatibility is wanted.

read_ucblocks

legacy callback function to return the Uncorrected Error Blocks. Newer drivers should provide such info via DVBv5 API, e. g. set_frontend;/get_frontend;, implementing this callback only if DVBv3 API compatibility is wanted.

diseqc_reset_overload

callback function to implement the FE_DISEQC_RESET_OVERLOAD ioctl (only Satellite)

diseqc_send_master_cmd

callback function to implement the FE_DISEQC_SEND_MASTER_CMD ioctl (only Satellite).

diseqc_recv_slave_reply

callback function to implement the FE_DISEQC_RECV_SLAVE_REPLY ioctl (only Satellite)

diseqc_send_burst

callback function to implement the FE_DISEQC_SEND_BURST ioctl (only Satellite).

set_tone

callback function to implement the FE_SET_TONE ioctl (only Satellite).

set_voltage

callback function to implement the FE_SET_VOLTAGE ioctl (only Satellite).

enable_high_lnb_voltage

callback function to implement the FE_ENABLE_HIGH_LNB_VOLTAGE ioctl (only Satellite).

dishnetwork_send_legacy_command

callback function to implement the FE_DISHNETWORK_SEND_LEGACY_CMD ioctl (only Satellite). Drivers should not use this, except when the DVB core emulation fails to provide proper support (e.g. if set_voltage takes more than 8ms to work), and when backward compatibility with this legacy API is required.

i2c_gate_ctrl

controls the I2C gate. Newer drivers should use I2C mux support instead.

ts_bus_ctrl

callback function used to take control of the TS bus.

set_lna

callback function to power on/off/auto the LNA.

search

callback function used on some custom algo search algos.

tuner_ops

pointer to struct dvb_tuner_ops

analog_ops

pointer to struct analog_demod_ops

set_property

callback function to allow the frontend to validade incoming properties. Should not be used on new drivers.

get_property

callback function to allow the frontend to override outcoming properties. Should not be used on new drivers.

COPYRIGHT