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path: root/drivers/hid/wacom_wac.c
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Diffstat (limited to 'drivers/hid/wacom_wac.c')
-rw-r--r--drivers/hid/wacom_wac.c74
1 files changed, 39 insertions, 35 deletions
diff --git a/drivers/hid/wacom_wac.c b/drivers/hid/wacom_wac.c
index 5f947ec20dcb..0bb44d0088ed 100644
--- a/drivers/hid/wacom_wac.c
+++ b/drivers/hid/wacom_wac.c
@@ -2894,24 +2894,31 @@ static int wacom_bpt_pen(struct wacom_wac *wacom)
struct wacom_features *features = &wacom->features;
struct input_dev *input = wacom->pen_input;
unsigned char *data = wacom->data;
- int prox = 0, x = 0, y = 0, p = 0, d = 0, pen = 0, btn1 = 0, btn2 = 0;
+ int x = 0, y = 0, p = 0, d = 0;
+ bool pen = false, btn1 = false, btn2 = false;
+ bool range, prox, rdy;
if (data[0] != WACOM_REPORT_PENABLED)
return 0;
- prox = (data[1] & 0x20) == 0x20;
+ range = (data[1] & 0x80) == 0x80;
+ prox = (data[1] & 0x40) == 0x40;
+ rdy = (data[1] & 0x20) == 0x20;
+
+ wacom->shared->stylus_in_proximity = range;
+ if (delay_pen_events(wacom))
+ return 0;
+
+ if (rdy) {
+ p = le16_to_cpup((__le16 *)&data[6]);
+ pen = data[1] & 0x01;
+ btn1 = data[1] & 0x02;
+ btn2 = data[1] & 0x04;
+ }
+ if (prox) {
+ x = le16_to_cpup((__le16 *)&data[2]);
+ y = le16_to_cpup((__le16 *)&data[4]);
- /*
- * All reports shared between PEN and RUBBER tool must be
- * forced to a known starting value (zero) when transitioning to
- * out-of-prox.
- *
- * If not reset then, to userspace, it will look like lost events
- * if new tool comes in-prox with same values as previous tool sent.
- *
- * Hardware does report zero in most out-of-prox cases but not all.
- */
- if (!wacom->shared->stylus_in_proximity) {
if (data[1] & 0x08) {
wacom->tool[0] = BTN_TOOL_RUBBER;
wacom->id[0] = ERASER_DEVICE_ID;
@@ -2919,16 +2926,9 @@ static int wacom_bpt_pen(struct wacom_wac *wacom)
wacom->tool[0] = BTN_TOOL_PEN;
wacom->id[0] = STYLUS_DEVICE_ID;
}
+ wacom->reporting_data = true;
}
-
- wacom->shared->stylus_in_proximity = prox;
- if (delay_pen_events(wacom))
- return 0;
-
- if (prox) {
- x = le16_to_cpup((__le16 *)&data[2]);
- y = le16_to_cpup((__le16 *)&data[4]);
- p = le16_to_cpup((__le16 *)&data[6]);
+ if (range) {
/*
* Convert distance from out prox to distance from tablet.
* distance will be greater than distance_max once
@@ -2937,25 +2937,29 @@ static int wacom_bpt_pen(struct wacom_wac *wacom)
*/
if (data[8] <= features->distance_max)
d = features->distance_max - data[8];
-
- pen = data[1] & 0x01;
- btn1 = data[1] & 0x02;
- btn2 = data[1] & 0x04;
} else {
wacom->id[0] = 0;
}
- input_report_key(input, BTN_TOUCH, pen);
- input_report_key(input, BTN_STYLUS, btn1);
- input_report_key(input, BTN_STYLUS2, btn2);
+ if (wacom->reporting_data) {
+ input_report_key(input, BTN_TOUCH, pen);
+ input_report_key(input, BTN_STYLUS, btn1);
+ input_report_key(input, BTN_STYLUS2, btn2);
- input_report_abs(input, ABS_X, x);
- input_report_abs(input, ABS_Y, y);
- input_report_abs(input, ABS_PRESSURE, p);
- input_report_abs(input, ABS_DISTANCE, d);
+ if (prox || !range) {
+ input_report_abs(input, ABS_X, x);
+ input_report_abs(input, ABS_Y, y);
+ }
+ input_report_abs(input, ABS_PRESSURE, p);
+ input_report_abs(input, ABS_DISTANCE, d);
- input_report_key(input, wacom->tool[0], prox); /* PEN or RUBBER */
- input_report_abs(input, ABS_MISC, wacom->id[0]); /* TOOL ID */
+ input_report_key(input, wacom->tool[0], range); /* PEN or RUBBER */
+ input_report_abs(input, ABS_MISC, wacom->id[0]); /* TOOL ID */
+ }
+
+ if (!range) {
+ wacom->reporting_data = false;
+ }
return 1;
}