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-rw-r--r--drivers/input/rmi4/rmi_2d_sensor.c330
1 files changed, 330 insertions, 0 deletions
diff --git a/drivers/input/rmi4/rmi_2d_sensor.c b/drivers/input/rmi4/rmi_2d_sensor.c
new file mode 100644
index 000000000..b7fe6eb35
--- /dev/null
+++ b/drivers/input/rmi4/rmi_2d_sensor.c
@@ -0,0 +1,330 @@
+// 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);