From 94eefa27132358434735060c6bbdf61c669bb0ab Mon Sep 17 00:00:00 2001 From: Jamie Lentin Date: Tue, 16 Dec 2014 21:26:46 +0000 Subject: HID: lenovo: Use native middle-button mode for compact keyboards By default the middle button is in a compatibility mode, and generates standard wheel events when dragging with the middle trackpoint button. Unfortunately this is buggy: * The middle button comes up before starting wheel events, causing a middle click on whatever the mouse cursor was sitting on * The USB keyboard always generates the "native" horizontal wheel event, regardless of mode. Instead, enable the "native" mode the Windows driver uses, and add support for the custom events this generates. This fixes the USB keyboard wheel events, and the middle-click up event comes after the wheel events. Signed-off-by: Jamie Lentin Signed-off-by: Jiri Kosina --- drivers/hid/hid-lenovo.c | 37 +++++++++++++++++++++++++++++++++++++ 1 file changed, 37 insertions(+) (limited to 'drivers/hid') diff --git a/drivers/hid/hid-lenovo.c b/drivers/hid/hid-lenovo.c index 0f35a76d9c90..c4c3f0952521 100644 --- a/drivers/hid/hid-lenovo.c +++ b/drivers/hid/hid-lenovo.c @@ -92,6 +92,38 @@ static int lenovo_input_mapping_cptkbd(struct hid_device *hdev, case 0x00fa: /* Fn-Esc: Fn-lock toggle */ map_key_clear(KEY_FN_ESC); return 1; + case 0x00fb: /* Middle mouse button (in native mode) */ + map_key_clear(BTN_MIDDLE); + return 1; + } + } + + /* Compatibility middle/wheel mappings should be ignored */ + if (usage->hid == HID_GD_WHEEL) + return -1; + if ((usage->hid & HID_USAGE_PAGE) == HID_UP_BUTTON && + (usage->hid & HID_USAGE) == 0x003) + return -1; + if ((usage->hid & HID_USAGE_PAGE) == HID_UP_CONSUMER && + (usage->hid & HID_USAGE) == 0x238) + return -1; + + /* Map wheel emulation reports: 0xffa1 = USB, 0xff10 = BT */ + if ((usage->hid & HID_USAGE_PAGE) == 0xff100000 || + (usage->hid & HID_USAGE_PAGE) == 0xffa10000) { + field->flags |= HID_MAIN_ITEM_RELATIVE | HID_MAIN_ITEM_VARIABLE; + field->logical_minimum = -127; + field->logical_maximum = 127; + + switch (usage->hid & HID_USAGE) { + case 0x0000: + hid_map_usage(hi, usage, bit, max, EV_REL, 0x06); + return 1; + case 0x0001: + hid_map_usage(hi, usage, bit, max, EV_REL, 0x08); + return 1; + default: + return -1; } } @@ -633,6 +665,11 @@ static int lenovo_probe_cptkbd(struct hid_device *hdev) if (ret) hid_warn(hdev, "Failed to switch F7/9/11 mode: %d\n", ret); + /* Switch middle button to native mode */ + ret = lenovo_send_cmd_cptkbd(hdev, 0x09, 0x01); + if (ret) + hid_warn(hdev, "Failed to switch middle button: %d\n", ret); + /* Set keyboard settings to known state */ cptkbd_data->fn_lock = true; cptkbd_data->sensitivity = 0x05; -- cgit