From: Arve Hjønnevåg <arve@android.com>
Date: Tue, 21 Jul 2009 03:11:31 +0000 (-0700)
Subject: Input: synaptics_i2c_rmi: Send new multi touch events
X-Git-Tag: firefly_0821_release~7613^2~851
X-Git-Url: http://demsky.eecs.uci.edu/git/?a=commitdiff_plain;h=90229d879bf1d6b712cf30f78dc5b405f6670f1c;p=firefly-linux-kernel-4.4.55.git

Input: synaptics_i2c_rmi: Send new multi touch events

Send both fingers using the new multitouch protocol in addition to
the old single finger event and second finger ABS_HAT* hack.

The new protocol does not specify how to report up events. To make
sure the user-space frameworks can generate up events, we send at
least one event where ABS_MT_TOUCH_MAJOR is zero before we stop
sending events for a finger.

Signed-off-by: Arve Hjønnevåg <arve@android.com>
---

diff --git a/drivers/input/touchscreen/synaptics_i2c_rmi.c b/drivers/input/touchscreen/synaptics_i2c_rmi.c
index e1c3848b3703..65436f65a92e 100644
--- a/drivers/input/touchscreen/synaptics_i2c_rmi.c
+++ b/drivers/input/touchscreen/synaptics_i2c_rmi.c
@@ -44,6 +44,7 @@ struct synaptics_ts_data {
 	int snap_down[2];
 	int snap_up[2];
 	uint32_t flags;
+	int reported_finger_count;
 	int8_t sensitivity_adjust;
 	int (*power)(int on);
 	struct early_suspend early_suspend;
@@ -205,6 +206,26 @@ static void synaptics_ts_work_func(struct work_struct *work)
 					input_report_abs(ts->input_dev, ABS_HAT0X, pos[1][0]);
 					input_report_abs(ts->input_dev, ABS_HAT0Y, pos[1][1]);
 				}
+
+				if (!finger)
+					z = 0;
+				input_report_abs(ts->input_dev, ABS_MT_TOUCH_MAJOR, z);
+				input_report_abs(ts->input_dev, ABS_MT_WIDTH_MAJOR, w);
+				input_report_abs(ts->input_dev, ABS_MT_POSITION_X, pos[0][0]);
+				input_report_abs(ts->input_dev, ABS_MT_POSITION_Y, pos[0][1]);
+				input_mt_sync(ts->input_dev);
+				if (finger2_pressed) {
+					input_report_abs(ts->input_dev, ABS_MT_TOUCH_MAJOR, z);
+					input_report_abs(ts->input_dev, ABS_MT_WIDTH_MAJOR, w);
+					input_report_abs(ts->input_dev, ABS_MT_POSITION_X, pos[1][0]);
+					input_report_abs(ts->input_dev, ABS_MT_POSITION_Y, pos[1][1]);
+					input_mt_sync(ts->input_dev);
+				} else if (ts->reported_finger_count > 1) {
+					input_report_abs(ts->input_dev, ABS_MT_TOUCH_MAJOR, 0);
+					input_report_abs(ts->input_dev, ABS_MT_WIDTH_MAJOR, 0);
+					input_mt_sync(ts->input_dev);
+				}
+				ts->reported_finger_count = finger;
 				input_sync(ts->input_dev);
 			}
 		}
@@ -481,6 +502,10 @@ static int synaptics_ts_probe(
 	input_set_abs_params(ts->input_dev, ABS_TOOL_WIDTH, 0, 15, fuzz_w, 0);
 	input_set_abs_params(ts->input_dev, ABS_HAT0X, -inactive_area_left, max_x + inactive_area_right, fuzz_x, 0);
 	input_set_abs_params(ts->input_dev, ABS_HAT0Y, -inactive_area_top, max_y + inactive_area_bottom, fuzz_y, 0);
+	input_set_abs_params(ts->input_dev, ABS_MT_POSITION_X, -inactive_area_left, max_x + inactive_area_right, fuzz_x, 0);
+	input_set_abs_params(ts->input_dev, ABS_MT_POSITION_Y, -inactive_area_top, max_y + inactive_area_bottom, fuzz_y, 0);
+	input_set_abs_params(ts->input_dev, ABS_MT_TOUCH_MAJOR, 0, 255, fuzz_p, 0);
+	input_set_abs_params(ts->input_dev, ABS_MT_WIDTH_MAJOR, 0, 15, fuzz_w, 0);
 	/* ts->input_dev->name = ts->keypad_info->name; */
 	ret = input_register_device(ts->input_dev);
 	if (ret) {