From: Jason Gerecke Date: Sat, 11 Feb 2017 00:14:07 +0000 (-0800) Subject: HID: wacom: Bluetooth IRQ for Intuos Pro should handle prox/range X-Git-Url: https://git.stricted.de/?a=commitdiff_plain;h=a48324de6d4d41dd3974e18ee8cedac4c0dd503a;p=GitHub%2FLineageOS%2Fandroid_kernel_motorola_exynos9610.git HID: wacom: Bluetooth IRQ for Intuos Pro should handle prox/range The prox/range bits included in the Bluetooth reports from the Intuos Pro were being ignored, leading to two issues. Firstly, the pen would never announce a BTN_TOOL_PEN event with value 0, leaving userspace to believe the pen was always active. Secondly, the driver would continue to send events for data while the packet's "prox" bit was clear. This can lead to sudden incorrect pointer jumps if the pen is slowly moved away from the tablet surface. Signed-off-by: Jason Gerecke Reviewed-by: Ping Cheng Signed-off-by: Jiri Kosina --- diff --git a/drivers/hid/wacom_wac.c b/drivers/hid/wacom_wac.c index d51daf581488..1f3bdd16e159 100644 --- a/drivers/hid/wacom_wac.c +++ b/drivers/hid/wacom_wac.c @@ -1211,29 +1211,34 @@ static void wacom_intuos_pro2_bt_pen(struct wacom_wac *wacom) for (i = 0; i < pen_frames; i++) { unsigned char *frame = &data[i*pen_frame_len + 1]; + bool valid = frame[0] & 0x80; + bool prox = frame[0] & 0x40; + bool range = frame[0] & 0x20; - if (!(frame[0] & 0x80)) + if (!valid) continue; - input_report_abs(pen_input, ABS_X, get_unaligned_le16(&frame[1])); - input_report_abs(pen_input, ABS_Y, get_unaligned_le16(&frame[3])); + if (range) { + input_report_abs(pen_input, ABS_X, get_unaligned_le16(&frame[1])); + input_report_abs(pen_input, ABS_Y, get_unaligned_le16(&frame[3])); + input_report_abs(pen_input, ABS_TILT_X, frame[7]); + input_report_abs(pen_input, ABS_TILT_Y, frame[8]); + input_report_abs(pen_input, ABS_Z, get_unaligned_le16(&frame[9])); + input_report_abs(pen_input, ABS_WHEEL, get_unaligned_le16(&frame[11])); + } input_report_abs(pen_input, ABS_PRESSURE, get_unaligned_le16(&frame[5])); - input_report_abs(pen_input, ABS_TILT_X, frame[7]); - input_report_abs(pen_input, ABS_TILT_Y, frame[8]); - input_report_abs(pen_input, ABS_Z, get_unaligned_le16(&frame[9])); - input_report_abs(pen_input, ABS_WHEEL, get_unaligned_le16(&frame[11])); - input_report_abs(pen_input, ABS_DISTANCE, frame[13]); + input_report_abs(pen_input, ABS_DISTANCE, range ? frame[13] : wacom->features.distance_max); input_report_key(pen_input, BTN_TOUCH, frame[0] & 0x01); input_report_key(pen_input, BTN_STYLUS, frame[0] & 0x02); input_report_key(pen_input, BTN_STYLUS2, frame[0] & 0x04); - input_report_key(pen_input, wacom->tool[0], 1); + input_report_key(pen_input, wacom->tool[0], prox); input_event(pen_input, EV_MSC, MSC_SERIAL, wacom->serial[0]); input_report_abs(pen_input, ABS_MISC, wacom_intuos_id_mangle(wacom->id[0])); /* report tool id */ - wacom->shared->stylus_in_proximity = frame[0] & 0x40; + wacom->shared->stylus_in_proximity = prox; input_sync(pen_input); }