diff options
author | Jamie Lentin <jm@lentin.co.uk> | 2015-08-11 22:40:52 +0100 |
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committer | Jiri Kosina <jkosina@suse.cz> | 2015-08-12 14:32:31 +0200 |
commit | 3cb5ff0220e31bd1043bb18fd5765c9f86928491 (patch) | |
tree | 70369e3713cd7b5f2235e16c605566e6a083a91e /drivers/hid/hid-lenovo.c | |
parent | dbfebb44b7c650dd134a8be07f9afd5862150987 (diff) | |
download | linux-3cb5ff0220e31bd1043bb18fd5765c9f86928491.tar.gz linux-3cb5ff0220e31bd1043bb18fd5765c9f86928491.tar.bz2 linux-3cb5ff0220e31bd1043bb18fd5765c9f86928491.zip |
HID: lenovo: Hide middle-button press until release
Don't relay a middle button press to userspace until release, and then
only if there was no scroll events inbetween. This is closer to what
Xorg's wheel emulation does, and avoids spurious middle-click pastes.
Signed-off-by: Jamie Lentin <jm@lentin.co.uk>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
Diffstat (limited to 'drivers/hid/hid-lenovo.c')
-rw-r--r-- | drivers/hid/hid-lenovo.c | 50 |
1 files changed, 50 insertions, 0 deletions
diff --git a/drivers/hid/hid-lenovo.c b/drivers/hid/hid-lenovo.c index d40221d78188..e4bc6cb6d7fa 100644 --- a/drivers/hid/hid-lenovo.c +++ b/drivers/hid/hid-lenovo.c @@ -37,6 +37,7 @@ struct lenovo_drvdata_tpkbd { }; struct lenovo_drvdata_cptkbd { + u8 middlebutton_state; /* 0:Up, 1:Down (undecided), 2:Scrolling */ bool fn_lock; int sensitivity; }; @@ -316,6 +317,53 @@ static int lenovo_raw_event(struct hid_device *hdev, return 0; } +static int lenovo_event_cptkbd(struct hid_device *hdev, + struct hid_field *field, struct hid_usage *usage, __s32 value) +{ + struct lenovo_drvdata_cptkbd *cptkbd_data = hid_get_drvdata(hdev); + + /* "wheel" scroll events */ + if (usage->type == EV_REL && (usage->code == REL_WHEEL || + usage->code == REL_HWHEEL)) { + /* Scroll events disable middle-click event */ + cptkbd_data->middlebutton_state = 2; + return 0; + } + + /* Middle click events */ + if (usage->type == EV_KEY && usage->code == BTN_MIDDLE) { + if (value == 1) { + cptkbd_data->middlebutton_state = 1; + } else if (value == 0) { + if (cptkbd_data->middlebutton_state == 1) { + /* No scrolling inbetween, send middle-click */ + input_event(field->hidinput->input, + EV_KEY, BTN_MIDDLE, 1); + input_sync(field->hidinput->input); + input_event(field->hidinput->input, + EV_KEY, BTN_MIDDLE, 0); + input_sync(field->hidinput->input); + } + cptkbd_data->middlebutton_state = 0; + } + return 1; + } + + return 0; +} + +static int lenovo_event(struct hid_device *hdev, struct hid_field *field, + struct hid_usage *usage, __s32 value) +{ + switch (hdev->product) { + case USB_DEVICE_ID_LENOVO_CUSBKBD: + case USB_DEVICE_ID_LENOVO_CBTKBD: + return lenovo_event_cptkbd(hdev, field, usage, value); + default: + return 0; + } +} + static int lenovo_features_set_tpkbd(struct hid_device *hdev) { struct hid_report *report; @@ -708,6 +756,7 @@ static int lenovo_probe_cptkbd(struct hid_device *hdev) hid_warn(hdev, "Failed to switch middle button: %d\n", ret); /* Set keyboard settings to known state */ + cptkbd_data->middlebutton_state = 0; cptkbd_data->fn_lock = true; cptkbd_data->sensitivity = 0x05; lenovo_features_set_cptkbd(hdev); @@ -835,6 +884,7 @@ static struct hid_driver lenovo_driver = { .probe = lenovo_probe, .remove = lenovo_remove, .raw_event = lenovo_raw_event, + .event = lenovo_event, .report_fixup = lenovo_report_fixup, }; module_hid_driver(lenovo_driver); |