mirror of
https://github.com/torvalds/linux.git
synced 2026-01-12 00:42:35 +08:00
df595059d5
A number of modules in the input subsystem use EXPORT_SYMBOL() and friends without explicitly including the corresponding header <linux/export.h>. While the build currently succeeds due to this header being pulled in transitively, this is not guaranteed to be the case in the future. Let's add the explicit include to make the dependencies clear and prevent future build breakage. Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
332 lines
8.4 KiB
C
332 lines
8.4 KiB
C
// SPDX-License-Identifier: GPL-2.0-only
|
|
/*
|
|
* Copyright (c) 2011-2016 Synaptics Incorporated
|
|
* Copyright (c) 2011 Unixphere
|
|
*/
|
|
|
|
#include <linux/export.h>
|
|
#include <linux/kernel.h>
|
|
#include <linux/device.h>
|
|
#include <linux/of.h>
|
|
#include <linux/input.h>
|
|
#include <linux/input/mt.h>
|
|
#include <linux/rmi.h>
|
|
#include "rmi_driver.h"
|
|
#include "rmi_2d_sensor.h"
|
|
|
|
#define RMI_2D_REL_POS_MIN -128
|
|
#define RMI_2D_REL_POS_MAX 127
|
|
|
|
/* maximum ABS_MT_POSITION displacement (in mm) */
|
|
#define DMAX 10
|
|
|
|
void rmi_2d_sensor_abs_process(struct rmi_2d_sensor *sensor,
|
|
struct rmi_2d_sensor_abs_object *obj,
|
|
int slot)
|
|
{
|
|
struct rmi_2d_axis_alignment *axis_align = &sensor->axis_align;
|
|
|
|
/* we keep the previous values if the finger is released */
|
|
if (obj->type == RMI_2D_OBJECT_NONE)
|
|
return;
|
|
|
|
if (axis_align->flip_x)
|
|
obj->x = sensor->max_x - obj->x;
|
|
|
|
if (axis_align->flip_y)
|
|
obj->y = sensor->max_y - obj->y;
|
|
|
|
if (axis_align->swap_axes)
|
|
swap(obj->x, obj->y);
|
|
|
|
/*
|
|
* Here checking if X offset or y offset are specified is
|
|
* redundant. We just add the offsets or clip the values.
|
|
*
|
|
* Note: offsets need to be applied before clipping occurs,
|
|
* or we could get funny values that are outside of
|
|
* clipping boundaries.
|
|
*/
|
|
obj->x += axis_align->offset_x;
|
|
obj->y += axis_align->offset_y;
|
|
|
|
obj->x = max(axis_align->clip_x_low, obj->x);
|
|
obj->y = max(axis_align->clip_y_low, obj->y);
|
|
|
|
if (axis_align->clip_x_high)
|
|
obj->x = min(sensor->max_x, obj->x);
|
|
|
|
if (axis_align->clip_y_high)
|
|
obj->y = min(sensor->max_y, obj->y);
|
|
|
|
sensor->tracking_pos[slot].x = obj->x;
|
|
sensor->tracking_pos[slot].y = obj->y;
|
|
}
|
|
EXPORT_SYMBOL_GPL(rmi_2d_sensor_abs_process);
|
|
|
|
void rmi_2d_sensor_abs_report(struct rmi_2d_sensor *sensor,
|
|
struct rmi_2d_sensor_abs_object *obj,
|
|
int slot)
|
|
{
|
|
struct rmi_2d_axis_alignment *axis_align = &sensor->axis_align;
|
|
struct input_dev *input = sensor->input;
|
|
int wide, major, minor;
|
|
|
|
if (sensor->kernel_tracking)
|
|
input_mt_slot(input, sensor->tracking_slots[slot]);
|
|
else
|
|
input_mt_slot(input, slot);
|
|
|
|
input_mt_report_slot_state(input, obj->mt_tool,
|
|
obj->type != RMI_2D_OBJECT_NONE);
|
|
|
|
if (obj->type != RMI_2D_OBJECT_NONE) {
|
|
obj->x = sensor->tracking_pos[slot].x;
|
|
obj->y = sensor->tracking_pos[slot].y;
|
|
|
|
if (axis_align->swap_axes)
|
|
swap(obj->wx, obj->wy);
|
|
|
|
wide = (obj->wx > obj->wy);
|
|
major = max(obj->wx, obj->wy);
|
|
minor = min(obj->wx, obj->wy);
|
|
|
|
if (obj->type == RMI_2D_OBJECT_STYLUS) {
|
|
major = max(1, major);
|
|
minor = max(1, minor);
|
|
}
|
|
|
|
input_event(sensor->input, EV_ABS, ABS_MT_POSITION_X, obj->x);
|
|
input_event(sensor->input, EV_ABS, ABS_MT_POSITION_Y, obj->y);
|
|
input_event(sensor->input, EV_ABS, ABS_MT_ORIENTATION, wide);
|
|
input_event(sensor->input, EV_ABS, ABS_MT_PRESSURE, obj->z);
|
|
input_event(sensor->input, EV_ABS, ABS_MT_TOUCH_MAJOR, major);
|
|
input_event(sensor->input, EV_ABS, ABS_MT_TOUCH_MINOR, minor);
|
|
|
|
rmi_dbg(RMI_DEBUG_2D_SENSOR, &sensor->input->dev,
|
|
"%s: obj[%d]: type: 0x%02x X: %d Y: %d Z: %d WX: %d WY: %d\n",
|
|
__func__, slot, obj->type, obj->x, obj->y, obj->z,
|
|
obj->wx, obj->wy);
|
|
}
|
|
}
|
|
EXPORT_SYMBOL_GPL(rmi_2d_sensor_abs_report);
|
|
|
|
void rmi_2d_sensor_rel_report(struct rmi_2d_sensor *sensor, int x, int y)
|
|
{
|
|
struct rmi_2d_axis_alignment *axis_align = &sensor->axis_align;
|
|
|
|
x = min(RMI_2D_REL_POS_MAX, max(RMI_2D_REL_POS_MIN, (int)x));
|
|
y = min(RMI_2D_REL_POS_MAX, max(RMI_2D_REL_POS_MIN, (int)y));
|
|
|
|
if (axis_align->flip_x)
|
|
x = min(RMI_2D_REL_POS_MAX, -x);
|
|
|
|
if (axis_align->flip_y)
|
|
y = min(RMI_2D_REL_POS_MAX, -y);
|
|
|
|
if (axis_align->swap_axes)
|
|
swap(x, y);
|
|
|
|
if (x || y) {
|
|
input_report_rel(sensor->input, REL_X, x);
|
|
input_report_rel(sensor->input, REL_Y, y);
|
|
}
|
|
}
|
|
EXPORT_SYMBOL_GPL(rmi_2d_sensor_rel_report);
|
|
|
|
static void rmi_2d_sensor_set_input_params(struct rmi_2d_sensor *sensor)
|
|
{
|
|
struct input_dev *input = sensor->input;
|
|
int res_x;
|
|
int res_y;
|
|
int max_x, max_y;
|
|
int input_flags = 0;
|
|
|
|
if (sensor->report_abs) {
|
|
sensor->min_x = sensor->axis_align.clip_x_low;
|
|
if (sensor->axis_align.clip_x_high)
|
|
sensor->max_x = min(sensor->max_x,
|
|
sensor->axis_align.clip_x_high);
|
|
|
|
sensor->min_y = sensor->axis_align.clip_y_low;
|
|
if (sensor->axis_align.clip_y_high)
|
|
sensor->max_y = min(sensor->max_y,
|
|
sensor->axis_align.clip_y_high);
|
|
|
|
set_bit(EV_ABS, input->evbit);
|
|
|
|
max_x = sensor->max_x;
|
|
max_y = sensor->max_y;
|
|
if (sensor->axis_align.swap_axes)
|
|
swap(max_x, max_y);
|
|
input_set_abs_params(input, ABS_MT_POSITION_X, 0, max_x, 0, 0);
|
|
input_set_abs_params(input, ABS_MT_POSITION_Y, 0, max_y, 0, 0);
|
|
|
|
if (sensor->x_mm && sensor->y_mm) {
|
|
res_x = (sensor->max_x - sensor->min_x) / sensor->x_mm;
|
|
res_y = (sensor->max_y - sensor->min_y) / sensor->y_mm;
|
|
if (sensor->axis_align.swap_axes)
|
|
swap(res_x, res_y);
|
|
|
|
input_abs_set_res(input, ABS_X, res_x);
|
|
input_abs_set_res(input, ABS_Y, res_y);
|
|
|
|
input_abs_set_res(input, ABS_MT_POSITION_X, res_x);
|
|
input_abs_set_res(input, ABS_MT_POSITION_Y, res_y);
|
|
|
|
if (!sensor->dmax)
|
|
sensor->dmax = DMAX * res_x;
|
|
}
|
|
|
|
input_set_abs_params(input, ABS_MT_PRESSURE, 0, 0xff, 0, 0);
|
|
input_set_abs_params(input, ABS_MT_TOUCH_MAJOR, 0, 0x0f, 0, 0);
|
|
input_set_abs_params(input, ABS_MT_TOUCH_MINOR, 0, 0x0f, 0, 0);
|
|
input_set_abs_params(input, ABS_MT_ORIENTATION, 0, 1, 0, 0);
|
|
input_set_abs_params(input, ABS_MT_TOOL_TYPE,
|
|
0, MT_TOOL_MAX, 0, 0);
|
|
|
|
if (sensor->sensor_type == rmi_sensor_touchpad)
|
|
input_flags = INPUT_MT_POINTER;
|
|
else
|
|
input_flags = INPUT_MT_DIRECT;
|
|
|
|
if (sensor->kernel_tracking)
|
|
input_flags |= INPUT_MT_TRACK;
|
|
|
|
input_mt_init_slots(input, sensor->nbr_fingers, input_flags);
|
|
}
|
|
|
|
if (sensor->report_rel) {
|
|
set_bit(EV_REL, input->evbit);
|
|
set_bit(REL_X, input->relbit);
|
|
set_bit(REL_Y, input->relbit);
|
|
}
|
|
|
|
if (sensor->topbuttonpad)
|
|
set_bit(INPUT_PROP_TOPBUTTONPAD, input->propbit);
|
|
}
|
|
|
|
int rmi_2d_sensor_configure_input(struct rmi_function *fn,
|
|
struct rmi_2d_sensor *sensor)
|
|
{
|
|
struct rmi_device *rmi_dev = fn->rmi_dev;
|
|
struct rmi_driver_data *drv_data = dev_get_drvdata(&rmi_dev->dev);
|
|
|
|
if (!drv_data->input)
|
|
return -ENODEV;
|
|
|
|
sensor->input = drv_data->input;
|
|
rmi_2d_sensor_set_input_params(sensor);
|
|
|
|
return 0;
|
|
}
|
|
EXPORT_SYMBOL_GPL(rmi_2d_sensor_configure_input);
|
|
|
|
#ifdef CONFIG_OF
|
|
int rmi_2d_sensor_of_probe(struct device *dev,
|
|
struct rmi_2d_sensor_platform_data *pdata)
|
|
{
|
|
int retval;
|
|
u32 val;
|
|
|
|
pdata->axis_align.swap_axes = of_property_read_bool(dev->of_node,
|
|
"touchscreen-swapped-x-y");
|
|
|
|
pdata->axis_align.flip_x = of_property_read_bool(dev->of_node,
|
|
"touchscreen-inverted-x");
|
|
|
|
pdata->axis_align.flip_y = of_property_read_bool(dev->of_node,
|
|
"touchscreen-inverted-y");
|
|
|
|
retval = rmi_of_property_read_u32(dev, &val, "syna,clip-x-low", 1);
|
|
if (retval)
|
|
return retval;
|
|
|
|
pdata->axis_align.clip_x_low = val;
|
|
|
|
retval = rmi_of_property_read_u32(dev, &val, "syna,clip-y-low", 1);
|
|
if (retval)
|
|
return retval;
|
|
|
|
pdata->axis_align.clip_y_low = val;
|
|
|
|
retval = rmi_of_property_read_u32(dev, &val, "syna,clip-x-high", 1);
|
|
if (retval)
|
|
return retval;
|
|
|
|
pdata->axis_align.clip_x_high = val;
|
|
|
|
retval = rmi_of_property_read_u32(dev, &val, "syna,clip-y-high", 1);
|
|
if (retval)
|
|
return retval;
|
|
|
|
pdata->axis_align.clip_y_high = val;
|
|
|
|
retval = rmi_of_property_read_u32(dev, &val, "syna,offset-x", 1);
|
|
if (retval)
|
|
return retval;
|
|
|
|
pdata->axis_align.offset_x = val;
|
|
|
|
retval = rmi_of_property_read_u32(dev, &val, "syna,offset-y", 1);
|
|
if (retval)
|
|
return retval;
|
|
|
|
pdata->axis_align.offset_y = val;
|
|
|
|
retval = rmi_of_property_read_u32(dev, &val, "syna,delta-x-threshold",
|
|
1);
|
|
if (retval)
|
|
return retval;
|
|
|
|
pdata->axis_align.delta_x_threshold = val;
|
|
|
|
retval = rmi_of_property_read_u32(dev, &val, "syna,delta-y-threshold",
|
|
1);
|
|
if (retval)
|
|
return retval;
|
|
|
|
pdata->axis_align.delta_y_threshold = val;
|
|
|
|
retval = rmi_of_property_read_u32(dev, (u32 *)&pdata->sensor_type,
|
|
"syna,sensor-type", 1);
|
|
if (retval)
|
|
return retval;
|
|
|
|
retval = rmi_of_property_read_u32(dev, &val, "touchscreen-x-mm", 1);
|
|
if (retval)
|
|
return retval;
|
|
|
|
pdata->x_mm = val;
|
|
|
|
retval = rmi_of_property_read_u32(dev, &val, "touchscreen-y-mm", 1);
|
|
if (retval)
|
|
return retval;
|
|
|
|
pdata->y_mm = val;
|
|
|
|
retval = rmi_of_property_read_u32(dev, &val,
|
|
"syna,disable-report-mask", 1);
|
|
if (retval)
|
|
return retval;
|
|
|
|
pdata->disable_report_mask = val;
|
|
|
|
retval = rmi_of_property_read_u32(dev, &val, "syna,rezero-wait-ms",
|
|
1);
|
|
if (retval)
|
|
return retval;
|
|
|
|
pdata->rezero_wait = val;
|
|
|
|
return 0;
|
|
}
|
|
#else
|
|
inline int rmi_2d_sensor_of_probe(struct device *dev,
|
|
struct rmi_2d_sensor_platform_data *pdata)
|
|
{
|
|
return -ENODEV;
|
|
}
|
|
#endif
|
|
EXPORT_SYMBOL_GPL(rmi_2d_sensor_of_probe);
|