The Logitech T650 used to report 3 fingers swipes to the up as a press on
the Super key. When we switched the touchpad to the raw mode, we also
disable such firmware gesture and some users may rely on it.

Unfortunately, 3 finger swipes are still not supported in most of the
Linux environments, which means that we disabled a feature of the touchpad.

Allow users to revert the raw reporting mode and keep going with the
firmware gestures by providing a new module parameter.

Signed-off-by: Benjamin Tissoires <benjamin.tissoi...@redhat.com>
---
 drivers/hid/hid-logitech-hidpp.c | 10 ++++++++++
 1 file changed, 10 insertions(+)

diff --git a/drivers/hid/hid-logitech-hidpp.c b/drivers/hid/hid-logitech-hidpp.c
index e77658c..8e9cb25 100644
--- a/drivers/hid/hid-logitech-hidpp.c
+++ b/drivers/hid/hid-logitech-hidpp.c
@@ -28,6 +28,11 @@ MODULE_LICENSE("GPL");
 MODULE_AUTHOR("Benjamin Tissoires <benjamin.tissoi...@gmail.com>");
 MODULE_AUTHOR("Nestor Lopez Casado <nlopezca...@logitech.com>");
 
+static bool disable_raw_mode;
+module_param(disable_raw_mode, bool, 0644);
+MODULE_PARM_DESC(disable_raw_mode,
+       "Disable Raw mode reporting for touchpads and keep firmware gestures.");
+
 #define REPORT_ID_HIDPP_SHORT                  0x10
 #define REPORT_ID_HIDPP_LONG                   0x11
 
@@ -1188,6 +1193,11 @@ static int hidpp_probe(struct hid_device *hdev, const 
struct hid_device_id *id)
 
        hidpp->quirks = id->driver_data;
 
+       if (disable_raw_mode) {
+               hidpp->quirks &= ~HIDPP_QUIRK_CLASS_WTP;
+               hidpp->quirks &= ~HIDPP_QUIRK_DELAYED_INIT;
+       }
+
        if (hidpp->quirks & HIDPP_QUIRK_CLASS_WTP) {
                ret = wtp_allocate(hdev, id);
                if (ret)
-- 
2.3.3

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