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linux_dsm_epyc7002/drivers/input/rmi4/rmi_2d_sensor.c
Denis Efremov 3ccd63d369 Input: synaptics-rmi4 - remove the exporting of rmi_2d_sensor_set_input_params 
The function rmi_2d_sensor_set_input_params is declared static and marked
EXPORT_SYMBOL_GPL, which is at best an odd combination. Because the
function is not used outside of the drivers/input/rmi4/rmi_2d_sensor.c
file it is defined in, this commit removes the EXPORT_SYMBOL_GPL() marking.

Signed-off-by: Denis Efremov <efremov@linux.com>
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
2019-07-24 12:58:11 +03:00

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// SPDX-License-Identifier: GPL-2.0-only
/*
* Copyright (c) 2011-2016 Synaptics Incorporated
* Copyright (c) 2011 Unixphere
*/
#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);
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