Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1758352Ab2JYOLU (ORCPT ); Thu, 25 Oct 2012 10:11:20 -0400 Received: from mail-wi0-f178.google.com ([209.85.212.178]:32841 "EHLO mail-wi0-f178.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S935732Ab2JYOLN (ORCPT ); Thu, 25 Oct 2012 10:11:13 -0400 From: Benjamin Tissoires To: "benjamin.tissoires" , Dmitry Torokhov , Henrik Rydberg , Jiri Kosina , Stephane Chatty , linux-input@vger.kernel.org, linux-kernel@vger.kernel.org Subject: [PATCH 08/10] HID: hid-multitouch: support for hovering devices Date: Thu, 25 Oct 2012 16:09:47 +0200 Message-Id: <1351174189-24719-9-git-send-email-benjamin.tissoires@gmail.com> X-Mailer: git-send-email 1.7.11.7 In-Reply-To: <1351174189-24719-1-git-send-email-benjamin.tissoires@gmail.com> References: <1351174189-24719-1-git-send-email-benjamin.tissoires@gmail.com> Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 3125 Lines: 82 Win8 devices supporting hovering must provides InRange HID field. The information that the finger is here but is not touching the surface is sent to the user space through ABS_MT_DISTANCE as required by the multitouch protocol. Signed-off-by: Benjamin Tissoires --- drivers/hid/hid-multitouch.c | 21 +++++++++++++++++++-- 1 file changed, 19 insertions(+), 2 deletions(-) diff --git a/drivers/hid/hid-multitouch.c b/drivers/hid/hid-multitouch.c index 6d4ad30..5aebbff 100644 --- a/drivers/hid/hid-multitouch.c +++ b/drivers/hid/hid-multitouch.c @@ -55,7 +55,7 @@ MODULE_LICENSE("GPL"); #define MT_QUIRK_WIN_8_CERTIFIED (1 << 10) struct mt_slot { - __s32 x, y, cx, cy, p, w, h; + __s32 x, y, cx, cy, z, p, w, h; __s32 contactid; /* the device ContactID assigned to this slot */ bool touch_state; /* is the touch valid? */ }; @@ -394,6 +394,12 @@ static int mt_input_mapping(struct hid_device *hdev, struct hid_input *hi, case HID_UP_DIGITIZER: switch (usage->hid) { case HID_DG_INRANGE: + if (cls->quirks & MT_QUIRK_WIN_8_CERTIFIED) { + hid_map_usage(hi, usage, bit, max, + EV_ABS, ABS_MT_DISTANCE); + input_set_abs_params(hi->input, + ABS_MT_DISTANCE, 0, 1, 0, 0); + } mt_store_field(usage, td, hi); td->last_field_index = field->index; return 1; @@ -511,6 +517,11 @@ static void mt_complete_slot(struct mt_device *td, struct input_dev *input) struct mt_slot *s = &td->curdata; if (td->mtclass.quirks & MT_QUIRK_WIN_8_CERTIFIED && + !test_bit(ABS_MT_DISTANCE, input->absbit)) + /* If InRange is not present, rely on TipSwitch */ + s->touch_state = !s->z; + + if (td->mtclass.quirks & MT_QUIRK_WIN_8_CERTIFIED && !s->touch_state) { struct input_mt_slot *slot = &input->mt->slots[slotnum]; int prv_x = input_mt_get_value(slot, ABS_MT_POSITION_X); @@ -543,6 +554,7 @@ static void mt_complete_slot(struct mt_device *td, struct input_dev *input) input_event(input, EV_ABS, ABS_MT_TOOL_Y, s->cy); } + input_event(input, EV_ABS, ABS_MT_DISTANCE, s->z); input_event(input, EV_ABS, ABS_MT_ORIENTATION, wide); input_event(input, EV_ABS, ABS_MT_PRESSURE, s->p); input_event(input, EV_ABS, ABS_MT_TOUCH_MAJOR, major); @@ -575,11 +587,16 @@ static int mt_event(struct hid_device *hid, struct hid_field *field, case HID_DG_INRANGE: if (quirks & MT_QUIRK_VALID_IS_INRANGE) td->curvalid = value; + if (quirks & MT_QUIRK_WIN_8_CERTIFIED) + td->curdata.touch_state = value; break; case HID_DG_TIPSWITCH: if (quirks & MT_QUIRK_NOT_SEEN_MEANS_UP) td->curvalid = value; - td->curdata.touch_state = value; + if (quirks & MT_QUIRK_WIN_8_CERTIFIED) + td->curdata.z = !value; + else + td->curdata.touch_state = value; break; case HID_DG_CONFIDENCE: if (quirks & MT_QUIRK_VALID_IS_CONFIDENCE) -- 1.7.11.7 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/