126 lines
3.8 KiB
C
126 lines
3.8 KiB
C
/**
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*
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* Synaptics RMI platform data definitions for use in board files.
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* Copyright (c) 2007 - 2011, Synaptics Incorporated
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*
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*/
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/*
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* This file is licensed under the GPL2 license.
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*
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*############################################################################
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* GPL
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*
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* This program is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License version 2 as published
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* by the Free Software Foundation.
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*
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* This program is distributed in the hope that it will be useful, but
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* WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
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* or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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* for more details.
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*
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*############################################################################
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*/
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#if !defined(_RMI_PLATFORMDATA_H)
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#define _RMI_PLATFORMDATA_H
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#define RMI_F01_INDEX 0x01
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#define RMI_F11_INDEX 0x11
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#define RMI_F19_INDEX 0x19
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#define RMI_F34_INDEX 0x34
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/* A couple of structs that are useful for frequently occuring constructs,such
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* as coordinate origin offsets or coordinate clipping values.
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*/
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struct rmi_XY_pair {
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int x;
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int y;
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};
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struct rmi_range {
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int min;
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int max;
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};
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/* This contains sensor specific data that is not specialized to I2C or SPI.
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*/
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struct rmi_sensordata {
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/* This will be called from rmi_register_sensor(). You can use it
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* to set up gpios, IRQs, and other platform specific infrastructure.
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*/
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int (*rmi_sensor_setup)(void);
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/* This will be called when the sensor is unloaded. Use this to
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* release gpios, IRQs, and other platform specific infrastructure.
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*/
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void (*rmi_sensor_teardown)(void);
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/* Use this to specify non-default settings on a per function basis.
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*/
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struct rmi_functiondata_list *perfunctiondata;
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};
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/* This contains the per-function customization for a given function.We store
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* the data this way in order to avoid allocating a large sparse array
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* typically
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* only a few functions are present on a sensor, and even fewer will be have
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* custom settings. There is a very small penalty paid for doing a linear
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* search through the list to find a given function's data, but since the list
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* is typically very short and is searched only at system boot time, this is
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* considered acceptable.
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*
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* When adding new fields to a functiondata struct, please follow these rules:
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* - Where possible, use 0 to indicate that the value should be defaulted.
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* This works pretty well for bools, ints, and chars.
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* - Where this is not practical (for example, in coordinate offsets or
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* range clipping), use a pointer. Set that pointer to null to indicate
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* that the value should be defaulted.
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*/
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struct rmi_functiondata {
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unsigned char function_index;
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void *data;
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};
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/* This can be included in the platformdata for SPI or I2C RMI4 devices to
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* customize the settings of the functions on a given sensor.
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*/
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struct rmi_functiondata_list {
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unsigned char count; /* Number of elements in the array */
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struct rmi_functiondata *functiondata;
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};
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struct rmi_f01_functiondata {
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/* What this does is product specific. For most, but not all, RMI4
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* devices, you can set this to true in order to request the device
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* report data at half the usual rate. This can be useful on slow
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* CPUs that don't have the resources to process data at the usual
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* rate. However, the meaning of this field is product specific, and
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* you should consult the product spec for your sensor to find out
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* what this will do.
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*/
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bool nonstandard_report_rate;
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};
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struct rmi_f11_functiondata {
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bool swap_axes;
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bool flipX;
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bool flipY;
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int button_height;
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struct rmi_XY_pair *offset;
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struct rmi_range *clipX;
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struct rmi_range *clipY;
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};
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struct rmi_button_map {
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unsigned char nbuttons;
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unsigned char *map;
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};
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struct rmi_f19_functiondata {
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struct rmi_button_map *button_map;
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};
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#endif
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