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-rw-r--r--drivers/input/mouse/elantech.c72
-rw-r--r--drivers/input/mouse/elantech.h6
2 files changed, 61 insertions, 17 deletions
diff --git a/drivers/input/mouse/elantech.c b/drivers/input/mouse/elantech.c
index 04d9bf320a4..32503565faf 100644
--- a/drivers/input/mouse/elantech.c
+++ b/drivers/input/mouse/elantech.c
@@ -16,6 +16,7 @@
#include <linux/slab.h>
#include <linux/module.h>
#include <linux/input.h>
+#include <linux/input/mt.h>
#include <linux/serio.h>
#include <linux/libps2.h>
#include "psmouse.h"
@@ -242,15 +243,37 @@ static void elantech_report_absolute_v1(struct psmouse *psmouse)
input_sync(dev);
}
+static void elantech_set_slot(struct input_dev *dev, int slot, bool active,
+ unsigned int x, unsigned int y)
+{
+ input_mt_slot(dev, slot);
+ input_mt_report_slot_state(dev, MT_TOOL_FINGER, active);
+ if (active) {
+ input_report_abs(dev, ABS_MT_POSITION_X, x);
+ input_report_abs(dev, ABS_MT_POSITION_Y, y);
+ }
+}
+
+/* x1 < x2 and y1 < y2 when two fingers, x = y = 0 when not pressed */
+static void elantech_report_semi_mt_data(struct input_dev *dev,
+ unsigned int num_fingers,
+ unsigned int x1, unsigned int y1,
+ unsigned int x2, unsigned int y2)
+{
+ elantech_set_slot(dev, 0, num_fingers != 0, x1, y1);
+ elantech_set_slot(dev, 1, num_fingers == 2, x2, y2);
+}
+
/*
* Interpret complete data packets and report absolute mode input events for
* hardware version 2. (6 byte packets)
*/
static void elantech_report_absolute_v2(struct psmouse *psmouse)
{
+ struct elantech_data *etd = psmouse->private;
struct input_dev *dev = psmouse->dev;
unsigned char *packet = psmouse->packet;
- int fingers, x1, y1, x2, y2;
+ unsigned int fingers, x1 = 0, y1 = 0, x2 = 0, y2 = 0, width = 0, pres = 0;
/* byte 0: n1 n0 . . . . R L */
fingers = (packet[0] & 0xc0) >> 6;
@@ -270,14 +293,18 @@ static void elantech_report_absolute_v2(struct psmouse *psmouse)
* byte 1: . . . . . x10 x9 x8
* byte 2: x7 x6 x5 x4 x4 x2 x1 x0
*/
- input_report_abs(dev, ABS_X,
- ((packet[1] & 0x07) << 8) | packet[2]);
+ x1 = ((packet[1] & 0x07) << 8) | packet[2];
/*
* byte 4: . . . . . . y9 y8
* byte 5: y7 y6 y5 y4 y3 y2 y1 y0
*/
- input_report_abs(dev, ABS_Y,
- ETP_YMAX_V2 - (((packet[4] & 0x03) << 8) | packet[5]));
+ y1 = ETP_YMAX_V2 - (((packet[4] & 0x03) << 8) | packet[5]);
+
+ input_report_abs(dev, ABS_X, x1);
+ input_report_abs(dev, ABS_Y, y1);
+
+ pres = (packet[1] & 0xf0) | ((packet[4] & 0xf0) >> 4);
+ width = ((packet[0] & 0x30) >> 2) | ((packet[3] & 0x30) >> 4);
break;
case 2:
@@ -303,23 +330,24 @@ static void elantech_report_absolute_v2(struct psmouse *psmouse)
*/
input_report_abs(dev, ABS_X, x1 << 2);
input_report_abs(dev, ABS_Y, y1 << 2);
- /*
- * For compatibility with the proprietary X Elantech driver
- * report both coordinates as hat coordinates
- */
- input_report_abs(dev, ABS_HAT0X, x1);
- input_report_abs(dev, ABS_HAT0Y, y1);
- input_report_abs(dev, ABS_HAT1X, x2);
- input_report_abs(dev, ABS_HAT1Y, y2);
+
+ /* Unknown so just report sensible values */
+ pres = 127;
+ width = 7;
break;
}
+ elantech_report_semi_mt_data(dev, fingers, x1, y1, x2, y2);
input_report_key(dev, BTN_TOOL_FINGER, fingers == 1);
input_report_key(dev, BTN_TOOL_DOUBLETAP, fingers == 2);
input_report_key(dev, BTN_TOOL_TRIPLETAP, fingers == 3);
input_report_key(dev, BTN_TOOL_QUADTAP, fingers == 4);
input_report_key(dev, BTN_LEFT, packet[0] & 0x01);
input_report_key(dev, BTN_RIGHT, packet[0] & 0x02);
+ if (etd->reports_pressure) {
+ input_report_abs(dev, ABS_PRESSURE, pres);
+ input_report_abs(dev, ABS_TOOL_WIDTH, width);
+ }
input_sync(dev);
}
@@ -478,10 +506,16 @@ static void elantech_set_input_params(struct psmouse *psmouse)
__set_bit(BTN_TOOL_QUADTAP, dev->keybit);
input_set_abs_params(dev, ABS_X, ETP_XMIN_V2, ETP_XMAX_V2, 0, 0);
input_set_abs_params(dev, ABS_Y, ETP_YMIN_V2, ETP_YMAX_V2, 0, 0);
- input_set_abs_params(dev, ABS_HAT0X, ETP_2FT_XMIN, ETP_2FT_XMAX, 0, 0);
- input_set_abs_params(dev, ABS_HAT0Y, ETP_2FT_YMIN, ETP_2FT_YMAX, 0, 0);
- input_set_abs_params(dev, ABS_HAT1X, ETP_2FT_XMIN, ETP_2FT_XMAX, 0, 0);
- input_set_abs_params(dev, ABS_HAT1Y, ETP_2FT_YMIN, ETP_2FT_YMAX, 0, 0);
+ if (etd->reports_pressure) {
+ input_set_abs_params(dev, ABS_PRESSURE, ETP_PMIN_V2,
+ ETP_PMAX_V2, 0, 0);
+ input_set_abs_params(dev, ABS_TOOL_WIDTH, ETP_WMIN_V2,
+ ETP_WMAX_V2, 0, 0);
+ }
+ __set_bit(INPUT_PROP_SEMI_MT, dev->propbit);
+ input_mt_init_slots(dev, 2);
+ input_set_abs_params(dev, ABS_MT_POSITION_X, ETP_XMIN_V2, ETP_XMAX_V2, 0, 0);
+ input_set_abs_params(dev, ABS_MT_POSITION_Y, ETP_YMIN_V2, ETP_YMAX_V2, 0, 0);
break;
}
}
@@ -725,6 +759,10 @@ int elantech_init(struct psmouse *psmouse)
etd->debug = 1;
/* Don't know how to do parity checking for version 2 */
etd->paritycheck = 0;
+
+ if (etd->fw_version >= 0x020800)
+ etd->reports_pressure = true;
+
} else {
etd->hw_version = 1;
etd->paritycheck = 1;
diff --git a/drivers/input/mouse/elantech.h b/drivers/input/mouse/elantech.h
index aa4aac5d219..fabb2b99615 100644
--- a/drivers/input/mouse/elantech.h
+++ b/drivers/input/mouse/elantech.h
@@ -77,6 +77,11 @@
#define ETP_YMIN_V2 ( 0 + ETP_EDGE_FUZZ_V2)
#define ETP_YMAX_V2 ( 768 - ETP_EDGE_FUZZ_V2)
+#define ETP_PMIN_V2 0
+#define ETP_PMAX_V2 255
+#define ETP_WMIN_V2 0
+#define ETP_WMAX_V2 15
+
/*
* For two finger touches the coordinate of each finger gets reported
* separately but with reduced resolution.
@@ -102,6 +107,7 @@ struct elantech_data {
unsigned char capabilities;
bool paritycheck;
bool jumpy_cursor;
+ bool reports_pressure;
unsigned char hw_version;
unsigned int fw_version;
unsigned int single_finger_reports;
generated by cgit v1.2.3 (git 2.39.1) at 2024-11-20 17:21:25 +0000