335 lines
8.6 KiB
C
335 lines
8.6 KiB
C
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/*
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* Copyright (c) 2011-2016 Synaptics Incorporated
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* Copyright (c) 2011 Unixphere
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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 by
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* the Free Software Foundation.
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*/
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#include <linux/kernel.h>
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#include <linux/device.h>
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#include <linux/of.h>
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#include <linux/input.h>
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#include <linux/input/mt.h>
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#include <linux/rmi.h>
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#include "rmi_driver.h"
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#include "rmi_2d_sensor.h"
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#define RMI_2D_REL_POS_MIN -128
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#define RMI_2D_REL_POS_MAX 127
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/* maximum ABS_MT_POSITION displacement (in mm) */
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#define DMAX 10
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void rmi_2d_sensor_abs_process(struct rmi_2d_sensor *sensor,
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struct rmi_2d_sensor_abs_object *obj,
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int slot)
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{
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struct rmi_2d_axis_alignment *axis_align = &sensor->axis_align;
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/* we keep the previous values if the finger is released */
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if (obj->type == RMI_2D_OBJECT_NONE)
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return;
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if (axis_align->flip_x)
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obj->x = sensor->max_x - obj->x;
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if (axis_align->flip_y)
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obj->y = sensor->max_y - obj->y;
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if (axis_align->swap_axes)
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swap(obj->x, obj->y);
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/*
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* Here checking if X offset or y offset are specified is
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* redundant. We just add the offsets or clip the values.
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*
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* Note: offsets need to be applied before clipping occurs,
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* or we could get funny values that are outside of
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* clipping boundaries.
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*/
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obj->x += axis_align->offset_x;
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obj->y += axis_align->offset_y;
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obj->x = max(axis_align->clip_x_low, obj->x);
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obj->y = max(axis_align->clip_y_low, obj->y);
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if (axis_align->clip_x_high)
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obj->x = min(sensor->max_x, obj->x);
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if (axis_align->clip_y_high)
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obj->y = min(sensor->max_y, obj->y);
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sensor->tracking_pos[slot].x = obj->x;
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sensor->tracking_pos[slot].y = obj->y;
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}
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EXPORT_SYMBOL_GPL(rmi_2d_sensor_abs_process);
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void rmi_2d_sensor_abs_report(struct rmi_2d_sensor *sensor,
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struct rmi_2d_sensor_abs_object *obj,
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int slot)
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{
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struct rmi_2d_axis_alignment *axis_align = &sensor->axis_align;
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struct input_dev *input = sensor->input;
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int wide, major, minor;
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if (sensor->kernel_tracking)
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input_mt_slot(input, sensor->tracking_slots[slot]);
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else
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input_mt_slot(input, slot);
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input_mt_report_slot_state(input, obj->mt_tool,
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obj->type != RMI_2D_OBJECT_NONE);
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if (obj->type != RMI_2D_OBJECT_NONE) {
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obj->x = sensor->tracking_pos[slot].x;
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obj->y = sensor->tracking_pos[slot].y;
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if (axis_align->swap_axes)
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swap(obj->wx, obj->wy);
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wide = (obj->wx > obj->wy);
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major = max(obj->wx, obj->wy);
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minor = min(obj->wx, obj->wy);
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if (obj->type == RMI_2D_OBJECT_STYLUS) {
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major = max(1, major);
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minor = max(1, minor);
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}
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input_event(sensor->input, EV_ABS, ABS_MT_POSITION_X, obj->x);
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input_event(sensor->input, EV_ABS, ABS_MT_POSITION_Y, obj->y);
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input_event(sensor->input, EV_ABS, ABS_MT_ORIENTATION, wide);
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input_event(sensor->input, EV_ABS, ABS_MT_PRESSURE, obj->z);
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input_event(sensor->input, EV_ABS, ABS_MT_TOUCH_MAJOR, major);
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input_event(sensor->input, EV_ABS, ABS_MT_TOUCH_MINOR, minor);
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rmi_dbg(RMI_DEBUG_2D_SENSOR, &sensor->input->dev,
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"%s: obj[%d]: type: 0x%02x X: %d Y: %d Z: %d WX: %d WY: %d\n",
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__func__, slot, obj->type, obj->x, obj->y, obj->z,
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obj->wx, obj->wy);
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}
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}
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EXPORT_SYMBOL_GPL(rmi_2d_sensor_abs_report);
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void rmi_2d_sensor_rel_report(struct rmi_2d_sensor *sensor, int x, int y)
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{
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struct rmi_2d_axis_alignment *axis_align = &sensor->axis_align;
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x = min(RMI_2D_REL_POS_MAX, max(RMI_2D_REL_POS_MIN, (int)x));
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y = min(RMI_2D_REL_POS_MAX, max(RMI_2D_REL_POS_MIN, (int)y));
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if (axis_align->flip_x)
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x = min(RMI_2D_REL_POS_MAX, -x);
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if (axis_align->flip_y)
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y = min(RMI_2D_REL_POS_MAX, -y);
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if (axis_align->swap_axes)
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swap(x, y);
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if (x || y) {
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input_report_rel(sensor->input, REL_X, x);
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input_report_rel(sensor->input, REL_Y, y);
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}
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}
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EXPORT_SYMBOL_GPL(rmi_2d_sensor_rel_report);
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static void rmi_2d_sensor_set_input_params(struct rmi_2d_sensor *sensor)
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{
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struct input_dev *input = sensor->input;
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int res_x;
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int res_y;
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int max_x, max_y;
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int input_flags = 0;
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if (sensor->report_abs) {
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sensor->min_x = sensor->axis_align.clip_x_low;
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if (sensor->axis_align.clip_x_high)
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sensor->max_x = min(sensor->max_x,
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sensor->axis_align.clip_x_high);
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sensor->min_y = sensor->axis_align.clip_y_low;
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if (sensor->axis_align.clip_y_high)
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sensor->max_y = min(sensor->max_y,
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sensor->axis_align.clip_y_high);
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set_bit(EV_ABS, input->evbit);
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max_x = sensor->max_x;
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max_y = sensor->max_y;
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if (sensor->axis_align.swap_axes)
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swap(max_x, max_y);
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input_set_abs_params(input, ABS_MT_POSITION_X, 0, max_x, 0, 0);
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input_set_abs_params(input, ABS_MT_POSITION_Y, 0, max_y, 0, 0);
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if (sensor->x_mm && sensor->y_mm) {
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res_x = (sensor->max_x - sensor->min_x) / sensor->x_mm;
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res_y = (sensor->max_y - sensor->min_y) / sensor->y_mm;
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if (sensor->axis_align.swap_axes)
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swap(res_x, res_y);
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input_abs_set_res(input, ABS_X, res_x);
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input_abs_set_res(input, ABS_Y, res_y);
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input_abs_set_res(input, ABS_MT_POSITION_X, res_x);
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input_abs_set_res(input, ABS_MT_POSITION_Y, res_y);
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if (!sensor->dmax)
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sensor->dmax = DMAX * res_x;
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}
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input_set_abs_params(input, ABS_MT_PRESSURE, 0, 0xff, 0, 0);
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input_set_abs_params(input, ABS_MT_TOUCH_MAJOR, 0, 0x0f, 0, 0);
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input_set_abs_params(input, ABS_MT_TOUCH_MINOR, 0, 0x0f, 0, 0);
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input_set_abs_params(input, ABS_MT_ORIENTATION, 0, 1, 0, 0);
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input_set_abs_params(input, ABS_MT_TOOL_TYPE,
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0, MT_TOOL_MAX, 0, 0);
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if (sensor->sensor_type == rmi_sensor_touchpad)
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input_flags = INPUT_MT_POINTER;
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else
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input_flags = INPUT_MT_DIRECT;
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if (sensor->kernel_tracking)
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input_flags |= INPUT_MT_TRACK;
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input_mt_init_slots(input, sensor->nbr_fingers, input_flags);
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}
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if (sensor->report_rel) {
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set_bit(EV_REL, input->evbit);
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set_bit(REL_X, input->relbit);
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set_bit(REL_Y, input->relbit);
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}
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if (sensor->topbuttonpad)
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set_bit(INPUT_PROP_TOPBUTTONPAD, input->propbit);
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}
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EXPORT_SYMBOL_GPL(rmi_2d_sensor_set_input_params);
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int rmi_2d_sensor_configure_input(struct rmi_function *fn,
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struct rmi_2d_sensor *sensor)
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{
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struct rmi_device *rmi_dev = fn->rmi_dev;
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struct rmi_driver_data *drv_data = dev_get_drvdata(&rmi_dev->dev);
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if (!drv_data->input)
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return -ENODEV;
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sensor->input = drv_data->input;
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rmi_2d_sensor_set_input_params(sensor);
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return 0;
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}
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EXPORT_SYMBOL_GPL(rmi_2d_sensor_configure_input);
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#ifdef CONFIG_OF
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int rmi_2d_sensor_of_probe(struct device *dev,
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struct rmi_2d_sensor_platform_data *pdata)
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{
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int retval;
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u32 val;
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pdata->axis_align.swap_axes = of_property_read_bool(dev->of_node,
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"touchscreen-swapped-x-y");
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pdata->axis_align.flip_x = of_property_read_bool(dev->of_node,
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"touchscreen-inverted-x");
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pdata->axis_align.flip_y = of_property_read_bool(dev->of_node,
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"touchscreen-inverted-y");
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retval = rmi_of_property_read_u32(dev, &val, "syna,clip-x-low", 1);
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if (retval)
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return retval;
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pdata->axis_align.clip_x_low = val;
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retval = rmi_of_property_read_u32(dev, &val, "syna,clip-y-low", 1);
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if (retval)
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return retval;
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pdata->axis_align.clip_y_low = val;
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retval = rmi_of_property_read_u32(dev, &val, "syna,clip-x-high", 1);
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if (retval)
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return retval;
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pdata->axis_align.clip_x_high = val;
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retval = rmi_of_property_read_u32(dev, &val, "syna,clip-y-high", 1);
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if (retval)
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return retval;
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pdata->axis_align.clip_y_high = val;
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retval = rmi_of_property_read_u32(dev, &val, "syna,offset-x", 1);
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if (retval)
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return retval;
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pdata->axis_align.offset_x = val;
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retval = rmi_of_property_read_u32(dev, &val, "syna,offset-y", 1);
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if (retval)
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return retval;
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pdata->axis_align.offset_y = val;
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retval = rmi_of_property_read_u32(dev, &val, "syna,delta-x-threshold",
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1);
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if (retval)
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return retval;
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pdata->axis_align.delta_x_threshold = val;
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retval = rmi_of_property_read_u32(dev, &val, "syna,delta-y-threshold",
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1);
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if (retval)
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return retval;
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pdata->axis_align.delta_y_threshold = val;
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retval = rmi_of_property_read_u32(dev, (u32 *)&pdata->sensor_type,
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"syna,sensor-type", 1);
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if (retval)
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return retval;
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retval = rmi_of_property_read_u32(dev, &val, "touchscreen-x-mm", 1);
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if (retval)
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return retval;
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pdata->x_mm = val;
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retval = rmi_of_property_read_u32(dev, &val, "touchscreen-y-mm", 1);
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if (retval)
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return retval;
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pdata->y_mm = val;
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retval = rmi_of_property_read_u32(dev, &val,
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"syna,disable-report-mask", 1);
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if (retval)
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return retval;
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pdata->disable_report_mask = val;
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retval = rmi_of_property_read_u32(dev, &val, "syna,rezero-wait-ms",
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1);
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if (retval)
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return retval;
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pdata->rezero_wait = val;
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return 0;
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}
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#else
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inline int rmi_2d_sensor_of_probe(struct device *dev,
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struct rmi_2d_sensor_platform_data *pdata)
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{
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return -ENODEV;
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}
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#endif
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EXPORT_SYMBOL_GPL(rmi_2d_sensor_of_probe);
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