| /* |
| * dvb_frontend.h |
| * |
| * The Digital TV Frontend kABI defines a driver-internal interface for |
| * registering low-level, hardware specific driver to a hardware independent |
| * frontend layer. |
| * |
| * 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 <media/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 - parameters to adjust frontend tuning |
| * |
| * @min_delay_ms: minimum delay for tuning, in ms |
| * @step_size: step size between two consecutive frequencies |
| * @max_drift: maximum drift |
| * |
| * NOTE: step_size is in Hz, for terrestrial/cable or kHz for satellite |
| */ |
| struct dvb_frontend_tune_settings { |
| int min_delay_ms; |
| int step_size; |
| int max_drift; |
| }; |
| |
| struct dvb_frontend; |
| |
| /** |
| * struct dvb_tuner_info - Frontend name and min/max ranges/bandwidths |
| * |
| * @name: name of the Frontend |
| * @frequency_min: minimal frequency supported |
| * @frequency_max: maximum frequency supported |
| * @frequency_step: frequency step |
| * @bandwidth_min: minimal frontend bandwidth supported |
| * @bandwidth_max: maximum frontend bandwidth supported |
| * @bandwidth_step: frontend bandwidth step |
| * |
| * NOTE: frequency parameters are in Hz, for terrestrial/cable or kHz for |
| * satellite. |
| */ |
| 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 - Parameters to tune into an analog/radio channel |
| * |
| * @frequency: Frequency used by analog TV tuner (either in 62.5 kHz step, |
| * for TV, or 62.5 Hz for radio) |
| * @mode: Tuner mode, as defined on enum v4l2_tuner_type |
| * @audmode: Audio mode as defined for the rxsubchans field at videodev2.h, |
| * e. g. V4L2_TUNER_MODE_* |
| * @std: TV standard bitmap as defined at videodev2.h, e. g. V4L2_STD_* |
| * |
| * Hybrid tuners should be supported by both V4L2 and DVB APIs. This |
| * struct contains the data that are used by the V4L2 side. To avoid |
| * dependencies from V4L2 headers, all enums here are declared as integers. |
| */ |
| struct analog_parameters { |
| unsigned int frequency; |
| unsigned int mode; |
| unsigned int audmode; |
| u64 std; |
| }; |
| |
| /** |
| * enum dvbfe_algo - defines the algorithm used to tune into a channel |
| * |
| * @DVBFE_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. |
| * |
| * @DVBFE_ALGO_SW: Software Algorithm - |
| * These are dumb devices, that require software to do everything |
| * |
| * @DVBFE_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. |
| * |
| * @DVBFE_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) |
| }; |
| |
| /** |
| * enum dvbfe_search - 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 - Tuner information and callbacks |
| * |
| * @info: embedded &struct dvb_tuner_info with tuner properties |
| * @release: callback function called when frontend is detached. |
| * drivers should free any allocated memory. |
| * @init: callback function used to initialize the tuner device. |
| * @sleep: callback function used to put the tuner to sleep. |
| * @suspend: callback function used to inform that the Kernel will |
| * suspend. |
| * @resume: callback function used to inform that the Kernel is |
| * resuming from suspend. |
| * @set_params: callback function used to inform the tuner to tune |
| * into a digital TV channel. The properties to be used |
| * are stored at &struct dvb_frontend.dtv_property_cache. |
| * The tuner demod can change the parameters to reflect |
| * the changes needed for the channel to be tuned, and |
| * update statistics. This is the recommended way to set |
| * the tuner parameters and should be used on newer |
| * drivers. |
| * @set_analog_params: callback function used to tune into an analog TV |
| * channel on hybrid tuners. It passes @analog_parameters |
| * to the driver. |
| * @set_config: callback function used to send some tuner-specific |
| * parameters. |
| * @get_frequency: get the actual tuned frequency |
| * @get_bandwidth: get the bandwitdh used by the low pass filters |
| * @get_if_frequency: get the Intermediate Frequency, in Hz. For baseband, |
| * should return 0. |
| * @get_status: returns the frontend lock status |
| * @get_rf_strength: returns the RF signal strength. Used mostly to support |
| * analog TV and radio. Digital TV should report, instead, |
| * via DVBv5 API (&struct dvb_frontend.dtv_property_cache). |
| * @get_afc: Used only by analog TV core. Reports the frequency |
| * drift due to AFC. |
| * @calc_regs: callback function used to pass register data settings |
| * for simple tuners. Shouldn't be used on newer drivers. |
| * @set_frequency: Set a new frequency. Shouldn't be used on newer drivers. |
| * @set_bandwidth: Set a new frequency. Shouldn't be used on newer drivers. |
| * |
| * NOTE: frequencies used on @get_frequency and @set_frequency are in Hz for |
| * terrestrial/cable or kHz for satellite. |
| * |
| */ |
| struct dvb_tuner_ops { |
| |
| struct dvb_tuner_info info; |
| |
| void (*release)(struct dvb_frontend *fe); |
| int (*init)(struct dvb_frontend *fe); |
| int (*sleep)(struct dvb_frontend *fe); |
| int (*suspend)(struct dvb_frontend *fe); |
| int (*resume)(struct dvb_frontend *fe); |
| |
| /* This is the recomended way to set the tuner */ |
| int (*set_params)(struct dvb_frontend *fe); |
| int (*set_analog_params)(struct dvb_frontend *fe, struct analog_parameters *p); |
| |
| 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); |
| int (*get_afc)(struct dvb_frontend *fe, s32 *afc); |
| |
| /* |
| * This is support for demods like the mt352 - fills out the supplied |
| * buffer with what to write. |
| * |
| * Don't use on newer drivers. |
| */ |
| int (*calc_regs)(struct dvb_frontend *fe, u8 *buf, int buf_len); |
| |
| /* |
| * These are provided separately from set_params in order to |
| * facilitate silicon tuners which require sophisticated tuning loops, |
| * controlling each parameter separately. |
| * |
| * Don't use on newer drivers. |
| */ |
| int (*set_frequency)(struct dvb_frontend *fe, u32 frequency); |
| int (*set_bandwidth)(struct dvb_frontend *fe, u32 bandwidth); |
| }; |
| |
| /** |
| * struct analog_demod_info - Information struct for analog TV part of the demod |
| * |
| * @name: Name of the analog TV demodulator |
| */ |
| struct analog_demod_info { |
| char *name; |
| }; |
| |
| /** |
| * struct analog_demod_ops - Demodulation information and callbacks for |
| * analog TV and radio |
| * |
| * @info: pointer to struct analog_demod_info |
| * @set_params: callback function used to inform the demod to set the |
| * demodulator parameters needed to decode an analog or |
| * radio channel. The properties are passed via |
| * &struct analog_params. |
| * @has_signal: returns 0xffff if has signal, or 0 if it doesn't. |
| * @get_afc: Used only by analog TV core. Reports the frequency |
| * drift due to AFC. |
| * @tuner_status: callback function that returns tuner status bits, e. g. |
| * %TUNER_STATUS_LOCKED and %TUNER_STATUS_STEREO. |
| * @standby: set the tuner to standby mode. |
| * @release: callback function called when frontend is detached. |
| * drivers should free any allocated memory. |
| * @i2c_gate_ctrl: controls the I2C gate. Newer drivers should use I2C |
| * mux support instead. |
| * @set_config: callback function used to send some tuner-specific |
| * parameters. |
| */ |
| 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, u16 *signal); |
| int (*get_afc)(struct dvb_frontend *fe, s32 *afc); |
| 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 - Demodulation information and callbacks for |
| * ditialt TV |
| * |
| * @info: embedded &struct dvb_tuner_info with tuner properties |
| * @delsys: Delivery systems supported by the frontend |
| * @detach: callback function called when frontend is detached. |
| * drivers should clean up, but not yet free the &struct |
| * dvb_frontend allocation. |
| * @release: callback function called when frontend is ready to be |
| * freed. |
| * 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 &struct |
| * 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 |
| * &struct 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 |
| */ |
| struct dvb_frontend_ops { |
| struct dvb_frontend_info info; |
| |
| u8 delsys[MAX_DELSYS]; |
| |
| void (*detach)(struct dvb_frontend *fe); |
| 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, |
| enum fe_status *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, |
| 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 *); |
| |
| /* |
| * 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; |
| }; |
| |
| #ifdef __DVB_CORE__ |
| #define MAX_EVENT 8 |
| |
| /* Used only internally at dvb_frontend.c */ |
| 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 - contains a list of properties that are |
| * specific to a digital TV standard. |
| * |
| * @frequency: frequency in Hz for terrestrial/cable or in kHz for |
| * Satellite |
| * @modulation: Frontend modulation type |
| * @voltage: SEC voltage (only Satellite) |
| * @sectone: SEC tone mode (only Satellite) |
| * @inversion: Spectral inversion |
| * @fec_inner: Forward error correction inner Code Rate |
| * @transmission_mode: Transmission Mode |
| * @bandwidth_hz: Bandwidth, in Hz. A zero value means that userspace |
| * wants to autodetect. |
| * @guard_interval: Guard Interval |
| * @hierarchy: Hierarchy |
| * @symbol_rate: Symbol Rate |
| * @code_rate_HP: high priority stream code rate |
| * @code_rate_LP: low priority stream code rate |
| * @pilot: Enable/disable/autodetect pilot tones |
| * @rolloff: Rolloff factor (alpha) |
| * @delivery_system: FE delivery system (e. g. digital TV standard) |
| * @interleaving: interleaving |
| * @isdbt_partial_reception: ISDB-T partial reception (only ISDB standard) |
| * @isdbt_sb_mode: ISDB-T Sound Broadcast (SB) mode (only ISDB standard) |
| * @isdbt_sb_subchannel: ISDB-T SB subchannel (only ISDB standard) |
| * @isdbt_sb_segment_idx: ISDB-T SB segment index (only ISDB standard) |
| * @isdbt_sb_segment_count: ISDB-T SB segment count (only ISDB standard) |
| * @isdbt_layer_enabled: ISDB Layer enabled (only ISDB standard) |
| * @layer: ISDB per-layer data (only ISDB standard) |
| * @layer.segment_count: Segment Count; |
| * @layer.fec: per layer code rate; |
| * @layer.modulation: per layer modulation; |
| * @layer.interleaving: per layer interleaving. |
| * @stream_id: If different than zero, enable substream filtering, if |
| * hardware supports (DVB-S2 and DVB-T2). |
| * @scrambling_sequence_index: Carries the index of the DVB-S2 physical layer |
| * scrambling sequence. |
| * @atscmh_fic_ver: Version number of the FIC (Fast Information Channel) |
| * signaling data (only ATSC-M/H) |
| * @atscmh_parade_id: Parade identification number (only ATSC-M/H) |
| * @atscmh_nog: Number of MH groups per MH subframe for a designated |
| * parade (only ATSC-M/H) |
| * @atscmh_tnog: Total number of MH groups including all MH groups |
| * belonging to all MH parades in one MH subframe |
| * (only ATSC-M/H) |
| * @atscmh_sgn: Start group number (only ATSC-M/H) |
| * @atscmh_prc: Parade repetition cycle (only ATSC-M/H) |
| * @atscmh_rs_frame_mode: Reed Solomon (RS) frame mode (only ATSC-M/H) |
| * @atscmh_rs_frame_ensemble: RS frame ensemble (only ATSC-M/H) |
| * @atscmh_rs_code_mode_pri: RS code mode pri (only ATSC-M/H) |
| * @atscmh_rs_code_mode_sec: RS code mode sec (only ATSC-M/H) |
| * @atscmh_sccc_block_mode: Series Concatenated Convolutional Code (SCCC) |
| * Block Mode (only ATSC-M/H) |
| * @atscmh_sccc_code_mode_a: SCCC code mode A (only ATSC-M/H) |
| * @atscmh_sccc_code_mode_b: SCCC code mode B (only ATSC-M/H) |
| * @atscmh_sccc_code_mode_c: SCCC code mode C (only ATSC-M/H) |
| * @atscmh_sccc_code_mode_d: SCCC code mode D (only ATSC-M/H) |
| * @lna: Power ON/OFF/AUTO the Linear Now-noise Amplifier (LNA) |
| * @strength: DVBv5 API statistics: Signal Strength |
| * @cnr: DVBv5 API statistics: Signal to Noise ratio of the |
| * (main) carrier |
| * @pre_bit_error: DVBv5 API statistics: pre-Viterbi bit error count |
| * @pre_bit_count: DVBv5 API statistics: pre-Viterbi bit count |
| * @post_bit_error: DVBv5 API statistics: post-Viterbi bit error count |
| * @post_bit_count: DVBv5 API statistics: post-Viterbi bit count |
| * @block_error: DVBv5 API statistics: block error count |
| * @block_count: DVBv5 API statistics: block count |
| * |
| * NOTE: derivated statistics like Uncorrected Error blocks (UCE) are |
| * calculated on userspace. |
| * |
| * Only a subset of the properties are needed for a given delivery system. |
| * For more info, consult the media_api.html with the documentation of the |
| * Userspace API. |
| */ |
| struct dtv_frontend_properties { |
| u32 frequency; |
| enum fe_modulation modulation; |
| |
| enum fe_sec_voltage voltage; |
| enum fe_sec_tone_mode sectone; |
| enum fe_spectral_inversion inversion; |
| enum fe_code_rate fec_inner; |
| enum fe_transmit_mode transmission_mode; |
| u32 bandwidth_hz; /* 0 = AUTO */ |
| enum fe_guard_interval guard_interval; |
| enum fe_hierarchy hierarchy; |
| u32 symbol_rate; |
| enum fe_code_rate code_rate_HP; |
| enum fe_code_rate code_rate_LP; |
| |
| enum fe_pilot pilot; |
| enum fe_rolloff rolloff; |
| |
| enum fe_delivery_system delivery_system; |
| |
| enum fe_interleaving interleaving; |
| |
| /* 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; |
| enum fe_code_rate fec; |
| enum fe_modulation modulation; |
| u8 interleaving; |
| } layer[3]; |
| |
| /* Multistream specifics */ |
| u32 stream_id; |
| |
| /* Physical Layer Scrambling specifics */ |
| u32 scrambling_sequence_index; |
| |
| /* ATSC-MH specifics */ |
| u8 atscmh_fic_ver; |
| u8 atscmh_parade_id; |
| u8 atscmh_nog; |
| u8 atscmh_tnog; |
| u8 atscmh_sgn; |
| u8 atscmh_prc; |
| |
| u8 atscmh_rs_frame_mode; |
| u8 atscmh_rs_frame_ensemble; |
| u8 atscmh_rs_code_mode_pri; |
| u8 atscmh_rs_code_mode_sec; |
| u8 atscmh_sccc_block_mode; |
| u8 atscmh_sccc_code_mode_a; |
| u8 atscmh_sccc_code_mode_b; |
| u8 atscmh_sccc_code_mode_c; |
| u8 atscmh_sccc_code_mode_d; |
| |
| u32 lna; |
| |
| /* statistics data */ |
| struct dtv_fe_stats strength; |
| struct dtv_fe_stats cnr; |
| struct dtv_fe_stats pre_bit_error; |
| struct dtv_fe_stats pre_bit_count; |
| struct dtv_fe_stats post_bit_error; |
| struct dtv_fe_stats post_bit_count; |
| struct dtv_fe_stats block_error; |
| struct dtv_fe_stats block_count; |
| }; |
| |
| #define DVB_FE_NO_EXIT 0 |
| #define DVB_FE_NORMAL_EXIT 1 |
| #define DVB_FE_DEVICE_REMOVED 2 |
| #define DVB_FE_DEVICE_RESUME 3 |
| |
| /** |
| * struct dvb_frontend - Frontend structure to be used on drivers. |
| * |
| * @refcount: refcount to keep track of &struct dvb_frontend |
| * references |
| * @ops: embedded &struct dvb_frontend_ops |
| * @dvb: pointer to &struct dvb_adapter |
| * @demodulator_priv: demod private data |
| * @tuner_priv: tuner private data |
| * @frontend_priv: frontend private data |
| * @sec_priv: SEC private data |
| * @analog_demod_priv: Analog demod private data |
| * @dtv_property_cache: embedded &struct dtv_frontend_properties |
| * @callback: callback function used on some drivers to call |
| * either the tuner or the demodulator. |
| * @id: Frontend ID |
| * @exit: Used to inform the DVB core that the frontend |
| * thread should exit (usually, means that the hardware |
| * got disconnected. |
| */ |
| |
| struct dvb_frontend { |
| struct kref refcount; |
| 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; |
| unsigned int exit; |
| }; |
| |
| /** |
| * dvb_register_frontend() - Registers a DVB frontend at the adapter |
| * |
| * @dvb: pointer to &struct dvb_adapter |
| * @fe: pointer to &struct dvb_frontend |
| * |
| * Allocate and initialize the private data needed by the frontend core to |
| * manage the frontend and calls dvb_register_device() to register a new |
| * frontend. It also cleans the property cache that stores the frontend |
| * parameters and selects the first available delivery system. |
| */ |
| int dvb_register_frontend(struct dvb_adapter *dvb, |
| struct dvb_frontend *fe); |
| |
| /** |
| * dvb_unregister_frontend() - Unregisters a DVB frontend |
| * |
| * @fe: pointer to &struct dvb_frontend |
| * |
| * Stops the frontend kthread, calls dvb_unregister_device() and frees the |
| * private frontend data allocated by dvb_register_frontend(). |
| * |
| * NOTE: This function doesn't frees the memory allocated by the demod, |
| * by the SEC driver and by the tuner. In order to free it, an explicit call to |
| * dvb_frontend_detach() is needed, after calling this function. |
| */ |
| int dvb_unregister_frontend(struct dvb_frontend *fe); |
| |
| /** |
| * dvb_frontend_detach() - Detaches and frees frontend specific data |
| * |
| * @fe: pointer to &struct dvb_frontend |
| * |
| * This function should be called after dvb_unregister_frontend(). It |
| * calls the SEC, tuner and demod release functions: |
| * &dvb_frontend_ops.release_sec, &dvb_frontend_ops.tuner_ops.release, |
| * &dvb_frontend_ops.analog_ops.release and &dvb_frontend_ops.release. |
| * |
| * If the driver is compiled with %CONFIG_MEDIA_ATTACH, it also decreases |
| * the module reference count, needed to allow userspace to remove the |
| * previously used DVB frontend modules. |
| */ |
| void dvb_frontend_detach(struct dvb_frontend *fe); |
| |
| /** |
| * dvb_frontend_suspend() - Suspends a Digital TV frontend |
| * |
| * @fe: pointer to &struct dvb_frontend |
| * |
| * This function prepares a Digital TV frontend to suspend. |
| * |
| * In order to prepare the tuner to suspend, if |
| * &dvb_frontend_ops.tuner_ops.suspend\(\) is available, it calls it. Otherwise, |
| * it will call &dvb_frontend_ops.tuner_ops.sleep\(\), if available. |
| * |
| * It will also call &dvb_frontend_ops.sleep\(\) to put the demod to suspend. |
| * |
| * The drivers should also call dvb_frontend_suspend\(\) as part of their |
| * handler for the &device_driver.suspend\(\). |
| */ |
| int dvb_frontend_suspend(struct dvb_frontend *fe); |
| |
| /** |
| * dvb_frontend_resume() - Resumes a Digital TV frontend |
| * |
| * @fe: pointer to &struct dvb_frontend |
| * |
| * This function resumes the usual operation of the tuner after resume. |
| * |
| * In order to resume the frontend, it calls the demod &dvb_frontend_ops.init\(\). |
| * |
| * If &dvb_frontend_ops.tuner_ops.resume\(\) is available, It, it calls it. |
| * Otherwise,t will call &dvb_frontend_ops.tuner_ops.init\(\), if available. |
| * |
| * Once tuner and demods are resumed, it will enforce that the SEC voltage and |
| * tone are restored to their previous values and wake up the frontend's |
| * kthread in order to retune the frontend. |
| * |
| * The drivers should also call dvb_frontend_resume() as part of their |
| * handler for the &device_driver.resume\(\). |
| */ |
| int dvb_frontend_resume(struct dvb_frontend *fe); |
| |
| /** |
| * dvb_frontend_reinitialise() - forces a reinitialisation at the frontend |
| * |
| * @fe: pointer to &struct dvb_frontend |
| * |
| * Calls &dvb_frontend_ops.init\(\) and &dvb_frontend_ops.tuner_ops.init\(\), |
| * and resets SEC tone and voltage (for Satellite systems). |
| * |
| * NOTE: Currently, this function is used only by one driver (budget-av). |
| * It seems to be due to address some special issue with that specific |
| * frontend. |
| */ |
| void dvb_frontend_reinitialise(struct dvb_frontend *fe); |
| |
| /** |
| * dvb_frontend_sleep_until() - Sleep for the amount of time given by |
| * add_usec parameter |
| * |
| * @waketime: pointer to &struct ktime_t |
| * @add_usec: time to sleep, in microseconds |
| * |
| * This function is used to measure the time required for the |
| * FE_DISHNETWORK_SEND_LEGACY_CMD() ioctl to work. It needs to be as precise |
| * as possible, as it affects the detection of the dish tone command at the |
| * satellite subsystem. |
| * |
| * Its used internally by the DVB frontend core, in order to emulate |
| * FE_DISHNETWORK_SEND_LEGACY_CMD() using the &dvb_frontend_ops.set_voltage\(\) |
| * callback. |
| * |
| * NOTE: it should not be used at the drivers, as the emulation for the |
| * legacy callback is provided by the Kernel. The only situation where this |
| * should be at the drivers is when there are some bugs at the hardware that |
| * would prevent the core emulation to work. On such cases, the driver would |
| * be writing a &dvb_frontend_ops.dishnetwork_send_legacy_command\(\) and |
| * calling this function directly. |
| */ |
| void dvb_frontend_sleep_until(ktime_t *waketime, u32 add_usec); |
| |
| #endif |
