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825 lines
30 KiB
825 lines
30 KiB
/* |
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* dvb_frontend.h |
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* |
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* The Digital TV Frontend kABI defines a driver-internal interface for |
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* registering low-level, hardware specific driver to a hardware independent |
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* frontend layer. |
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* |
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* Copyright (C) 2001 convergence integrated media GmbH |
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* Copyright (C) 2004 convergence GmbH |
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* |
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* Written by Ralph Metzler |
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* Overhauled by Holger Waechtler |
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* Kernel I2C stuff by Michael Hunold <[email protected]> |
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* |
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* This program is free software; you can redistribute it and/or |
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* modify it under the terms of the GNU Lesser General Public License |
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* as published by the Free Software Foundation; either version 2.1 |
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* of the License, or (at your option) any later version. |
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* |
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* This program is distributed in the hope that it will be useful, |
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* but WITHOUT ANY WARRANTY; without even the implied warranty of |
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
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* GNU General Public License for more details. |
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* |
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|
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* You should have received a copy of the GNU Lesser General Public License |
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* along with this program; if not, write to the Free Software |
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* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. |
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* |
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*/ |
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#ifndef _DVB_FRONTEND_H_ |
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#define _DVB_FRONTEND_H_ |
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#include <linux/types.h> |
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#include <linux/sched.h> |
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#include <linux/ioctl.h> |
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#include <linux/i2c.h> |
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#include <linux/module.h> |
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#include <linux/errno.h> |
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#include <linux/delay.h> |
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#include <linux/mutex.h> |
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#include <linux/slab.h> |
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#include <linux/bitops.h> |
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#include <linux/dvb/frontend.h> |
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#include <media/dvbdev.h> |
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/* |
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* Maximum number of Delivery systems per frontend. It |
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* should be smaller or equal to 32 |
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*/ |
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#define MAX_DELSYS 8 |
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|
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/* Helper definitions to be used at frontend drivers */ |
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#define kHz 1000UL |
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#define MHz 1000000UL |
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/** |
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* struct dvb_frontend_tune_settings - parameters to adjust frontend tuning |
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* |
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* @min_delay_ms: minimum delay for tuning, in ms |
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* @step_size: step size between two consecutive frequencies |
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* @max_drift: maximum drift |
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* |
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* NOTE: step_size is in Hz, for terrestrial/cable or kHz for satellite |
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*/ |
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struct dvb_frontend_tune_settings { |
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int min_delay_ms; |
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int step_size; |
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int max_drift; |
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}; |
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struct dvb_frontend; |
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/** |
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* struct dvb_tuner_info - Frontend name and min/max ranges/bandwidths |
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* |
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* @name: name of the Frontend |
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* @frequency_min_hz: minimal frequency supported in Hz |
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* @frequency_max_hz: maximum frequency supported in Hz |
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* @frequency_step_hz: frequency step in Hz |
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* @bandwidth_min: minimal frontend bandwidth supported |
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* @bandwidth_max: maximum frontend bandwidth supported |
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* @bandwidth_step: frontend bandwidth step |
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*/ |
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struct dvb_tuner_info { |
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char name[128]; |
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u32 frequency_min_hz; |
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u32 frequency_max_hz; |
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u32 frequency_step_hz; |
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u32 bandwidth_min; |
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u32 bandwidth_max; |
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u32 bandwidth_step; |
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}; |
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/** |
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* struct analog_parameters - Parameters to tune into an analog/radio channel |
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* |
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* @frequency: Frequency used by analog TV tuner (either in 62.5 kHz step, |
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* for TV, or 62.5 Hz for radio) |
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* @mode: Tuner mode, as defined on enum v4l2_tuner_type |
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* @audmode: Audio mode as defined for the rxsubchans field at videodev2.h, |
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* e. g. V4L2_TUNER_MODE_* |
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* @std: TV standard bitmap as defined at videodev2.h, e. g. V4L2_STD_* |
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* |
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* Hybrid tuners should be supported by both V4L2 and DVB APIs. This |
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* struct contains the data that are used by the V4L2 side. To avoid |
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* dependencies from V4L2 headers, all enums here are declared as integers. |
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*/ |
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struct analog_parameters { |
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unsigned int frequency; |
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unsigned int mode; |
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unsigned int audmode; |
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u64 std; |
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}; |
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/** |
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* enum dvbfe_algo - defines the algorithm used to tune into a channel |
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* |
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* @DVBFE_ALGO_HW: Hardware Algorithm - |
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* Devices that support this algorithm do everything in hardware |
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* and no software support is needed to handle them. |
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* Requesting these devices to LOCK is the only thing required, |
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* device is supposed to do everything in the hardware. |
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* |
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* @DVBFE_ALGO_SW: Software Algorithm - |
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* These are dumb devices, that require software to do everything |
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* |
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* @DVBFE_ALGO_CUSTOM: Customizable Agorithm - |
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* Devices having this algorithm can be customized to have specific |
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* algorithms in the frontend driver, rather than simply doing a |
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* software zig-zag. In this case the zigzag maybe hardware assisted |
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* or it maybe completely done in hardware. In all cases, usage of |
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* this algorithm, in conjunction with the search and track |
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* callbacks, utilizes the driver specific algorithm. |
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* |
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* @DVBFE_ALGO_RECOVERY: Recovery Algorithm - |
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* These devices have AUTO recovery capabilities from LOCK failure |
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*/ |
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enum dvbfe_algo { |
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DVBFE_ALGO_HW = BIT(0), |
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DVBFE_ALGO_SW = BIT(1), |
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DVBFE_ALGO_CUSTOM = BIT(2), |
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DVBFE_ALGO_RECOVERY = BIT(31), |
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}; |
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/** |
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* enum dvbfe_search - search callback possible return status |
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* |
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* @DVBFE_ALGO_SEARCH_SUCCESS: |
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* The frontend search algorithm completed and returned successfully |
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* |
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* @DVBFE_ALGO_SEARCH_ASLEEP: |
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* The frontend search algorithm is sleeping |
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* |
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* @DVBFE_ALGO_SEARCH_FAILED: |
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* The frontend search for a signal failed |
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* |
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* @DVBFE_ALGO_SEARCH_INVALID: |
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* The frontend search algorithm was probably supplied with invalid |
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* parameters and the search is an invalid one |
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* |
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* @DVBFE_ALGO_SEARCH_ERROR: |
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* The frontend search algorithm failed due to some error |
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* |
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* @DVBFE_ALGO_SEARCH_AGAIN: |
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* The frontend search algorithm was requested to search again |
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*/ |
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enum dvbfe_search { |
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DVBFE_ALGO_SEARCH_SUCCESS = BIT(0), |
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DVBFE_ALGO_SEARCH_ASLEEP = BIT(1), |
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DVBFE_ALGO_SEARCH_FAILED = BIT(2), |
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DVBFE_ALGO_SEARCH_INVALID = BIT(3), |
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DVBFE_ALGO_SEARCH_AGAIN = BIT(4), |
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DVBFE_ALGO_SEARCH_ERROR = BIT(31), |
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}; |
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/** |
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* struct dvb_tuner_ops - Tuner information and callbacks |
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* |
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* @info: embedded &struct dvb_tuner_info with tuner properties |
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* @release: callback function called when frontend is detached. |
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* drivers should free any allocated memory. |
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* @init: callback function used to initialize the tuner device. |
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* @sleep: callback function used to put the tuner to sleep. |
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* @suspend: callback function used to inform that the Kernel will |
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* suspend. |
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* @resume: callback function used to inform that the Kernel is |
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* resuming from suspend. |
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* @set_params: callback function used to inform the tuner to tune |
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* into a digital TV channel. The properties to be used |
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* are stored at &struct dvb_frontend.dtv_property_cache. |
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* The tuner demod can change the parameters to reflect |
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* the changes needed for the channel to be tuned, and |
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* update statistics. This is the recommended way to set |
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* the tuner parameters and should be used on newer |
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* drivers. |
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* @set_analog_params: callback function used to tune into an analog TV |
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* channel on hybrid tuners. It passes @analog_parameters |
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* to the driver. |
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* @set_config: callback function used to send some tuner-specific |
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* parameters. |
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* @get_frequency: get the actual tuned frequency |
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* @get_bandwidth: get the bandwidth used by the low pass filters |
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* @get_if_frequency: get the Intermediate Frequency, in Hz. For baseband, |
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* should return 0. |
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* @get_status: returns the frontend lock status |
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* @get_rf_strength: returns the RF signal strength. Used mostly to support |
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* analog TV and radio. Digital TV should report, instead, |
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* via DVBv5 API (&struct dvb_frontend.dtv_property_cache). |
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* @get_afc: Used only by analog TV core. Reports the frequency |
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* drift due to AFC. |
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* @calc_regs: callback function used to pass register data settings |
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* for simple tuners. Shouldn't be used on newer drivers. |
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* @set_frequency: Set a new frequency. Shouldn't be used on newer drivers. |
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* @set_bandwidth: Set a new frequency. Shouldn't be used on newer drivers. |
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* |
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* NOTE: frequencies used on @get_frequency and @set_frequency are in Hz for |
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* terrestrial/cable or kHz for satellite. |
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* |
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*/ |
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struct dvb_tuner_ops { |
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struct dvb_tuner_info info; |
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void (*release)(struct dvb_frontend *fe); |
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int (*init)(struct dvb_frontend *fe); |
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int (*sleep)(struct dvb_frontend *fe); |
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int (*suspend)(struct dvb_frontend *fe); |
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int (*resume)(struct dvb_frontend *fe); |
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/* This is the recommended way to set the tuner */ |
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int (*set_params)(struct dvb_frontend *fe); |
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int (*set_analog_params)(struct dvb_frontend *fe, struct analog_parameters *p); |
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int (*set_config)(struct dvb_frontend *fe, void *priv_cfg); |
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int (*get_frequency)(struct dvb_frontend *fe, u32 *frequency); |
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int (*get_bandwidth)(struct dvb_frontend *fe, u32 *bandwidth); |
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int (*get_if_frequency)(struct dvb_frontend *fe, u32 *frequency); |
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#define TUNER_STATUS_LOCKED 1 |
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#define TUNER_STATUS_STEREO 2 |
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int (*get_status)(struct dvb_frontend *fe, u32 *status); |
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int (*get_rf_strength)(struct dvb_frontend *fe, u16 *strength); |
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int (*get_afc)(struct dvb_frontend *fe, s32 *afc); |
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/* |
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* This is support for demods like the mt352 - fills out the supplied |
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* buffer with what to write. |
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* |
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* Don't use on newer drivers. |
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*/ |
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int (*calc_regs)(struct dvb_frontend *fe, u8 *buf, int buf_len); |
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/* |
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* These are provided separately from set_params in order to |
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* facilitate silicon tuners which require sophisticated tuning loops, |
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* controlling each parameter separately. |
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* |
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* Don't use on newer drivers. |
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*/ |
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int (*set_frequency)(struct dvb_frontend *fe, u32 frequency); |
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int (*set_bandwidth)(struct dvb_frontend *fe, u32 bandwidth); |
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}; |
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/** |
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* struct analog_demod_info - Information struct for analog TV part of the demod |
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* |
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* @name: Name of the analog TV demodulator |
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*/ |
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struct analog_demod_info { |
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char *name; |
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}; |
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/** |
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* struct analog_demod_ops - Demodulation information and callbacks for |
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* analog TV and radio |
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* |
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* @info: pointer to struct analog_demod_info |
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* @set_params: callback function used to inform the demod to set the |
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* demodulator parameters needed to decode an analog or |
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* radio channel. The properties are passed via |
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* &struct analog_params. |
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* @has_signal: returns 0xffff if has signal, or 0 if it doesn't. |
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* @get_afc: Used only by analog TV core. Reports the frequency |
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* drift due to AFC. |
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* @tuner_status: callback function that returns tuner status bits, e. g. |
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* %TUNER_STATUS_LOCKED and %TUNER_STATUS_STEREO. |
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* @standby: set the tuner to standby mode. |
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* @release: callback function called when frontend is detached. |
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* drivers should free any allocated memory. |
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* @i2c_gate_ctrl: controls the I2C gate. Newer drivers should use I2C |
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* mux support instead. |
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* @set_config: callback function used to send some tuner-specific |
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* parameters. |
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*/ |
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struct analog_demod_ops { |
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struct analog_demod_info info; |
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void (*set_params)(struct dvb_frontend *fe, |
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struct analog_parameters *params); |
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int (*has_signal)(struct dvb_frontend *fe, u16 *signal); |
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int (*get_afc)(struct dvb_frontend *fe, s32 *afc); |
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void (*tuner_status)(struct dvb_frontend *fe); |
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void (*standby)(struct dvb_frontend *fe); |
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void (*release)(struct dvb_frontend *fe); |
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int (*i2c_gate_ctrl)(struct dvb_frontend *fe, int enable); |
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/** This is to allow setting tuner-specific configuration */ |
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int (*set_config)(struct dvb_frontend *fe, void *priv_cfg); |
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}; |
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struct dtv_frontend_properties; |
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/** |
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* struct dvb_frontend_internal_info - Frontend properties and capabilities |
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* |
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* @name: Name of the frontend |
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* @frequency_min_hz: Minimal frequency supported by the frontend. |
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* @frequency_max_hz: Minimal frequency supported by the frontend. |
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* @frequency_stepsize_hz: All frequencies are multiple of this value. |
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* @frequency_tolerance_hz: Frequency tolerance. |
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* @symbol_rate_min: Minimal symbol rate, in bauds |
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* (for Cable/Satellite systems). |
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* @symbol_rate_max: Maximal symbol rate, in bauds |
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* (for Cable/Satellite systems). |
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* @symbol_rate_tolerance: Maximal symbol rate tolerance, in ppm |
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* (for Cable/Satellite systems). |
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* @caps: Capabilities supported by the frontend, |
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* as specified in &enum fe_caps. |
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*/ |
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struct dvb_frontend_internal_info { |
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char name[128]; |
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u32 frequency_min_hz; |
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u32 frequency_max_hz; |
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u32 frequency_stepsize_hz; |
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u32 frequency_tolerance_hz; |
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u32 symbol_rate_min; |
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u32 symbol_rate_max; |
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u32 symbol_rate_tolerance; |
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enum fe_caps caps; |
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}; |
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/** |
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* struct dvb_frontend_ops - Demodulation information and callbacks for |
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* ditialt TV |
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* |
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* @info: embedded &struct dvb_tuner_info with tuner properties |
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* @delsys: Delivery systems supported by the frontend |
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* @detach: callback function called when frontend is detached. |
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* drivers should clean up, but not yet free the &struct |
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* dvb_frontend allocation. |
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* @release: callback function called when frontend is ready to be |
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* freed. |
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* drivers should free any allocated memory. |
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* @release_sec: callback function requesting that the Satellite Equipment |
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* Control (SEC) driver to release and free any memory |
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* allocated by the driver. |
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* @init: callback function used to initialize the tuner device. |
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* @sleep: callback function used to put the tuner to sleep. |
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* @write: callback function used by some demod legacy drivers to |
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* allow other drivers to write data into their registers. |
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* Should not be used on new drivers. |
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* @tune: callback function used by demod drivers that use |
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* @DVBFE_ALGO_HW to tune into a frequency. |
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* @get_frontend_algo: returns the desired hardware algorithm. |
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* @set_frontend: callback function used to inform the demod to set the |
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* parameters for demodulating a digital TV channel. |
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* The properties to be used are stored at &struct |
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* dvb_frontend.dtv_property_cache. The demod can change |
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* the parameters to reflect the changes needed for the |
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* channel to be decoded, and update statistics. |
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* @get_tune_settings: callback function |
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* @get_frontend: callback function used to inform the parameters |
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* actuall in use. The properties to be used are stored at |
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* &struct dvb_frontend.dtv_property_cache and update |
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* statistics. Please notice that it should not return |
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* an error code if the statistics are not available |
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* because the demog is not locked. |
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* @read_status: returns the locking status of the frontend. |
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* @read_ber: legacy callback function to return the bit error rate. |
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* Newer drivers should provide such info via DVBv5 API, |
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* e. g. @set_frontend;/@get_frontend, implementing this |
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* callback only if DVBv3 API compatibility is wanted. |
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* @read_signal_strength: legacy callback function to return the signal |
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* strength. Newer drivers should provide such info via |
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* DVBv5 API, e. g. @set_frontend/@get_frontend, |
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* implementing this callback only if DVBv3 API |
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* compatibility is wanted. |
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* @read_snr: legacy callback function to return the Signal/Noise |
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* rate. Newer drivers should provide such info via |
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* DVBv5 API, e. g. @set_frontend/@get_frontend, |
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* implementing this callback only if DVBv3 API |
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* compatibility is wanted. |
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* @read_ucblocks: legacy callback function to return the Uncorrected Error |
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* Blocks. Newer drivers should provide such info via |
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* DVBv5 API, e. g. @set_frontend/@get_frontend, |
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* implementing this callback only if DVBv3 API |
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* compatibility is wanted. |
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* @diseqc_reset_overload: callback function to implement the |
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* FE_DISEQC_RESET_OVERLOAD() ioctl (only Satellite) |
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* @diseqc_send_master_cmd: callback function to implement the |
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* FE_DISEQC_SEND_MASTER_CMD() ioctl (only Satellite). |
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* @diseqc_recv_slave_reply: callback function to implement the |
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* FE_DISEQC_RECV_SLAVE_REPLY() ioctl (only Satellite) |
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* @diseqc_send_burst: callback function to implement the |
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* FE_DISEQC_SEND_BURST() ioctl (only Satellite). |
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* @set_tone: callback function to implement the |
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* FE_SET_TONE() ioctl (only Satellite). |
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* @set_voltage: callback function to implement the |
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* FE_SET_VOLTAGE() ioctl (only Satellite). |
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* @enable_high_lnb_voltage: callback function to implement the |
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* FE_ENABLE_HIGH_LNB_VOLTAGE() ioctl (only Satellite). |
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* @dishnetwork_send_legacy_command: callback function to implement the |
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* FE_DISHNETWORK_SEND_LEGACY_CMD() ioctl (only Satellite). |
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* Drivers should not use this, except when the DVB |
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* core emulation fails to provide proper support (e.g. |
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* if @set_voltage takes more than 8ms to work), and |
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* when backward compatibility with this legacy API is |
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* required. |
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* @i2c_gate_ctrl: controls the I2C gate. Newer drivers should use I2C |
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* mux support instead. |
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* @ts_bus_ctrl: callback function used to take control of the TS bus. |
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* @set_lna: callback function to power on/off/auto the LNA. |
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* @search: callback function used on some custom algo search algos. |
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* @tuner_ops: pointer to &struct dvb_tuner_ops |
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* @analog_ops: pointer to &struct analog_demod_ops |
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*/ |
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struct dvb_frontend_ops { |
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struct dvb_frontend_internal_info info; |
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u8 delsys[MAX_DELSYS]; |
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void (*detach)(struct dvb_frontend *fe); |
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void (*release)(struct dvb_frontend* fe); |
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void (*release_sec)(struct dvb_frontend* fe); |
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int (*init)(struct dvb_frontend* fe); |
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int (*sleep)(struct dvb_frontend* fe); |
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int (*write)(struct dvb_frontend* fe, const u8 buf[], int len); |
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/* if this is set, it overrides the default swzigzag */ |
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int (*tune)(struct dvb_frontend* fe, |
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bool re_tune, |
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unsigned int mode_flags, |
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unsigned int *delay, |
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enum fe_status *status); |
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/* get frontend tuning algorithm from the module */ |
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enum dvbfe_algo (*get_frontend_algo)(struct dvb_frontend *fe); |
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/* these two are only used for the swzigzag code */ |
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int (*set_frontend)(struct dvb_frontend *fe); |
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int (*get_tune_settings)(struct dvb_frontend* fe, struct dvb_frontend_tune_settings* settings); |
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int (*get_frontend)(struct dvb_frontend *fe, |
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struct dtv_frontend_properties *props); |
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int (*read_status)(struct dvb_frontend *fe, enum fe_status *status); |
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int (*read_ber)(struct dvb_frontend* fe, u32* ber); |
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int (*read_signal_strength)(struct dvb_frontend* fe, u16* strength); |
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int (*read_snr)(struct dvb_frontend* fe, u16* snr); |
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int (*read_ucblocks)(struct dvb_frontend* fe, u32* ucblocks); |
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int (*diseqc_reset_overload)(struct dvb_frontend* fe); |
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int (*diseqc_send_master_cmd)(struct dvb_frontend* fe, struct dvb_diseqc_master_cmd* cmd); |
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int (*diseqc_recv_slave_reply)(struct dvb_frontend* fe, struct dvb_diseqc_slave_reply* reply); |
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int (*diseqc_send_burst)(struct dvb_frontend *fe, |
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enum fe_sec_mini_cmd minicmd); |
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int (*set_tone)(struct dvb_frontend *fe, enum fe_sec_tone_mode tone); |
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int (*set_voltage)(struct dvb_frontend *fe, |
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enum fe_sec_voltage voltage); |
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int (*enable_high_lnb_voltage)(struct dvb_frontend* fe, long arg); |
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int (*dishnetwork_send_legacy_command)(struct dvb_frontend* fe, unsigned long cmd); |
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int (*i2c_gate_ctrl)(struct dvb_frontend* fe, int enable); |
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int (*ts_bus_ctrl)(struct dvb_frontend* fe, int acquire); |
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int (*set_lna)(struct dvb_frontend *); |
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/* |
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* These callbacks are for devices that implement their own |
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* tuning algorithms, rather than a simple swzigzag |
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*/ |
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enum dvbfe_search (*search)(struct dvb_frontend *fe); |
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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 { |
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struct dvb_frontend_event events[MAX_EVENT]; |
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int eventw; |
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int eventr; |
|
int overflow; |
|
wait_queue_head_t wait_queue; |
|
struct mutex mtx; |
|
}; |
|
#endif |
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|
|
/** |
|
* 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
|
|
|