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10#include <linux/kernel.h>
11#include <linux/device.h>
12#include <linux/of.h>
13#include <linux/input.h>
14#include <linux/input/mt.h>
15#include <linux/rmi.h>
16#include "rmi_driver.h"
17#include "rmi_2d_sensor.h"
18
19#define RMI_2D_REL_POS_MIN -128
20#define RMI_2D_REL_POS_MAX 127
21
22
23#define DMAX 10
24
25void rmi_2d_sensor_abs_process(struct rmi_2d_sensor *sensor,
26 struct rmi_2d_sensor_abs_object *obj,
27 int slot)
28{
29 struct rmi_2d_axis_alignment *axis_align = &sensor->axis_align;
30
31
32 if (obj->type == RMI_2D_OBJECT_NONE)
33 return;
34
35 if (axis_align->swap_axes)
36 swap(obj->x, obj->y);
37
38 if (axis_align->flip_x)
39 obj->x = sensor->max_x - obj->x;
40
41 if (axis_align->flip_y)
42 obj->y = sensor->max_y - obj->y;
43
44
45
46
47
48
49
50
51
52 obj->x += axis_align->offset_x;
53 obj->y += axis_align->offset_y;
54
55 obj->x = max(axis_align->clip_x_low, obj->x);
56 obj->y = max(axis_align->clip_y_low, obj->y);
57
58 if (axis_align->clip_x_high)
59 obj->x = min(sensor->max_x, obj->x);
60
61 if (axis_align->clip_y_high)
62 obj->y = min(sensor->max_y, obj->y);
63
64 sensor->tracking_pos[slot].x = obj->x;
65 sensor->tracking_pos[slot].y = obj->y;
66}
67EXPORT_SYMBOL_GPL(rmi_2d_sensor_abs_process);
68
69void rmi_2d_sensor_abs_report(struct rmi_2d_sensor *sensor,
70 struct rmi_2d_sensor_abs_object *obj,
71 int slot)
72{
73 struct rmi_2d_axis_alignment *axis_align = &sensor->axis_align;
74 struct input_dev *input = sensor->input;
75 int wide, major, minor;
76
77 if (sensor->kernel_tracking)
78 input_mt_slot(input, sensor->tracking_slots[slot]);
79 else
80 input_mt_slot(input, slot);
81
82 input_mt_report_slot_state(input, obj->mt_tool,
83 obj->type != RMI_2D_OBJECT_NONE);
84
85 if (obj->type != RMI_2D_OBJECT_NONE) {
86 obj->x = sensor->tracking_pos[slot].x;
87 obj->y = sensor->tracking_pos[slot].y;
88
89 if (axis_align->swap_axes)
90 swap(obj->wx, obj->wy);
91
92 wide = (obj->wx > obj->wy);
93 major = max(obj->wx, obj->wy);
94 minor = min(obj->wx, obj->wy);
95
96 if (obj->type == RMI_2D_OBJECT_STYLUS) {
97 major = max(1, major);
98 minor = max(1, minor);
99 }
100
101 input_event(sensor->input, EV_ABS, ABS_MT_POSITION_X, obj->x);
102 input_event(sensor->input, EV_ABS, ABS_MT_POSITION_Y, obj->y);
103 input_event(sensor->input, EV_ABS, ABS_MT_ORIENTATION, wide);
104 input_event(sensor->input, EV_ABS, ABS_MT_PRESSURE, obj->z);
105 input_event(sensor->input, EV_ABS, ABS_MT_TOUCH_MAJOR, major);
106 input_event(sensor->input, EV_ABS, ABS_MT_TOUCH_MINOR, minor);
107
108 rmi_dbg(RMI_DEBUG_2D_SENSOR, &sensor->input->dev,
109 "%s: obj[%d]: type: 0x%02x X: %d Y: %d Z: %d WX: %d WY: %d\n",
110 __func__, slot, obj->type, obj->x, obj->y, obj->z,
111 obj->wx, obj->wy);
112 }
113}
114EXPORT_SYMBOL_GPL(rmi_2d_sensor_abs_report);
115
116void rmi_2d_sensor_rel_report(struct rmi_2d_sensor *sensor, int x, int y)
117{
118 struct rmi_2d_axis_alignment *axis_align = &sensor->axis_align;
119
120 x = min(RMI_2D_REL_POS_MAX, max(RMI_2D_REL_POS_MIN, (int)x));
121 y = min(RMI_2D_REL_POS_MAX, max(RMI_2D_REL_POS_MIN, (int)y));
122
123 if (axis_align->swap_axes)
124 swap(x, y);
125
126 if (axis_align->flip_x)
127 x = min(RMI_2D_REL_POS_MAX, -x);
128
129 if (axis_align->flip_y)
130 y = min(RMI_2D_REL_POS_MAX, -y);
131
132 if (x || y) {
133 input_report_rel(sensor->input, REL_X, x);
134 input_report_rel(sensor->input, REL_Y, y);
135 }
136}
137EXPORT_SYMBOL_GPL(rmi_2d_sensor_rel_report);
138
139static void rmi_2d_sensor_set_input_params(struct rmi_2d_sensor *sensor)
140{
141 struct input_dev *input = sensor->input;
142 int res_x;
143 int res_y;
144 int input_flags = 0;
145
146 if (sensor->report_abs) {
147 if (sensor->axis_align.swap_axes)
148 swap(sensor->max_x, sensor->max_y);
149
150 sensor->min_x = sensor->axis_align.clip_x_low;
151 if (sensor->axis_align.clip_x_high)
152 sensor->max_x = min(sensor->max_x,
153 sensor->axis_align.clip_x_high);
154
155 sensor->min_y = sensor->axis_align.clip_y_low;
156 if (sensor->axis_align.clip_y_high)
157 sensor->max_y = min(sensor->max_y,
158 sensor->axis_align.clip_y_high);
159
160 set_bit(EV_ABS, input->evbit);
161 input_set_abs_params(input, ABS_MT_POSITION_X, 0, sensor->max_x,
162 0, 0);
163 input_set_abs_params(input, ABS_MT_POSITION_Y, 0, sensor->max_y,
164 0, 0);
165
166 if (sensor->x_mm && sensor->y_mm) {
167 res_x = (sensor->max_x - sensor->min_x) / sensor->x_mm;
168 res_y = (sensor->max_y - sensor->min_y) / sensor->y_mm;
169
170 input_abs_set_res(input, ABS_X, res_x);
171 input_abs_set_res(input, ABS_Y, res_y);
172
173 input_abs_set_res(input, ABS_MT_POSITION_X, res_x);
174 input_abs_set_res(input, ABS_MT_POSITION_Y, res_y);
175
176 if (!sensor->dmax)
177 sensor->dmax = DMAX * res_x;
178 }
179
180 input_set_abs_params(input, ABS_MT_PRESSURE, 0, 0xff, 0, 0);
181 input_set_abs_params(input, ABS_MT_TOUCH_MAJOR, 0, 0x0f, 0, 0);
182 input_set_abs_params(input, ABS_MT_TOUCH_MINOR, 0, 0x0f, 0, 0);
183 input_set_abs_params(input, ABS_MT_ORIENTATION, 0, 1, 0, 0);
184
185 if (sensor->sensor_type == rmi_sensor_touchpad)
186 input_flags = INPUT_MT_POINTER;
187 else
188 input_flags = INPUT_MT_DIRECT;
189
190 if (sensor->kernel_tracking)
191 input_flags |= INPUT_MT_TRACK;
192
193 input_mt_init_slots(input, sensor->nbr_fingers, input_flags);
194 }
195
196 if (sensor->report_rel) {
197 set_bit(EV_REL, input->evbit);
198 set_bit(REL_X, input->relbit);
199 set_bit(REL_Y, input->relbit);
200 }
201
202 if (sensor->topbuttonpad)
203 set_bit(INPUT_PROP_TOPBUTTONPAD, input->propbit);
204}
205EXPORT_SYMBOL_GPL(rmi_2d_sensor_set_input_params);
206
207int rmi_2d_sensor_configure_input(struct rmi_function *fn,
208 struct rmi_2d_sensor *sensor)
209{
210 struct rmi_device *rmi_dev = fn->rmi_dev;
211 struct rmi_driver_data *drv_data = dev_get_drvdata(&rmi_dev->dev);
212
213 if (!drv_data->input)
214 return -ENODEV;
215
216 sensor->input = drv_data->input;
217 rmi_2d_sensor_set_input_params(sensor);
218
219 return 0;
220}
221EXPORT_SYMBOL_GPL(rmi_2d_sensor_configure_input);
222
223#ifdef CONFIG_OF
224int rmi_2d_sensor_of_probe(struct device *dev,
225 struct rmi_2d_sensor_platform_data *pdata)
226{
227 int retval;
228 u32 val;
229
230 pdata->axis_align.swap_axes = of_property_read_bool(dev->of_node,
231 "touchscreen-swapped-x-y");
232
233 pdata->axis_align.flip_x = of_property_read_bool(dev->of_node,
234 "touchscreen-inverted-x");
235
236 pdata->axis_align.flip_y = of_property_read_bool(dev->of_node,
237 "touchscreen-inverted-y");
238
239 retval = rmi_of_property_read_u32(dev, &val, "syna,clip-x-low", 1);
240 if (retval)
241 return retval;
242
243 pdata->axis_align.clip_x_low = val;
244
245 retval = rmi_of_property_read_u32(dev, &val, "syna,clip-y-low", 1);
246 if (retval)
247 return retval;
248
249 pdata->axis_align.clip_y_low = val;
250
251 retval = rmi_of_property_read_u32(dev, &val, "syna,clip-x-high", 1);
252 if (retval)
253 return retval;
254
255 pdata->axis_align.clip_x_high = val;
256
257 retval = rmi_of_property_read_u32(dev, &val, "syna,clip-y-high", 1);
258 if (retval)
259 return retval;
260
261 pdata->axis_align.clip_y_high = val;
262
263 retval = rmi_of_property_read_u32(dev, &val, "syna,offset-x", 1);
264 if (retval)
265 return retval;
266
267 pdata->axis_align.offset_x = val;
268
269 retval = rmi_of_property_read_u32(dev, &val, "syna,offset-y", 1);
270 if (retval)
271 return retval;
272
273 pdata->axis_align.offset_y = val;
274
275 retval = rmi_of_property_read_u32(dev, &val, "syna,delta-x-threshold",
276 1);
277 if (retval)
278 return retval;
279
280 pdata->axis_align.delta_x_threshold = val;
281
282 retval = rmi_of_property_read_u32(dev, &val, "syna,delta-y-threshold",
283 1);
284 if (retval)
285 return retval;
286
287 pdata->axis_align.delta_y_threshold = val;
288
289 retval = rmi_of_property_read_u32(dev, (u32 *)&pdata->sensor_type,
290 "syna,sensor-type", 1);
291 if (retval)
292 return retval;
293
294 retval = rmi_of_property_read_u32(dev, &val, "touchscreen-x-mm", 1);
295 if (retval)
296 return retval;
297
298 pdata->x_mm = val;
299
300 retval = rmi_of_property_read_u32(dev, &val, "touchscreen-y-mm", 1);
301 if (retval)
302 return retval;
303
304 pdata->y_mm = val;
305
306 retval = rmi_of_property_read_u32(dev, &val,
307 "syna,disable-report-mask", 1);
308 if (retval)
309 return retval;
310
311 pdata->disable_report_mask = val;
312
313 retval = rmi_of_property_read_u32(dev, &val, "syna,rezero-wait-ms",
314 1);
315 if (retval)
316 return retval;
317
318 pdata->rezero_wait = val;
319
320 return 0;
321}
322#else
323inline int rmi_2d_sensor_of_probe(struct device *dev,
324 struct rmi_2d_sensor_platform_data *pdata)
325{
326 return -ENODEV;
327}
328#endif
329EXPORT_SYMBOL_GPL(rmi_2d_sensor_of_probe);
330
