Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1423194Ab2KNSgn (ORCPT ); Wed, 14 Nov 2012 13:36:43 -0500 Received: from smtprelay-h22.telenor.se ([195.54.99.197]:54319 "EHLO smtprelay-h22.telenor.se" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1423146Ab2KNSgm (ORCPT ); Wed, 14 Nov 2012 13:36:42 -0500 X-SENDER-IP: [85.230.29.114] X-LISTENER: [smtp.bredband.net] X-IronPort-Anti-Spam-Filtered: true X-IronPort-Anti-Spam-Result: AtWeAHfko1BV5h1yPGdsb2JhbABEile3XAOBARkBAQEBHxkNJ4IeAQEFJxMcEwEPEAgDGC4UDRgKGhOHeAMTsWUNiVQUizBpcoRZYQOUJ4FUhXuFOIgB X-IronPort-AV: E=Sophos;i="4.83,252,1352070000"; d="scan'208";a="229592059" From: "Henrik Rydberg" Date: Wed, 14 Nov 2012 19:43:07 +0100 To: Benjamin Tissoires Cc: Dmitry Torokhov , Jiri Kosina , Stephane Chatty , linux-input@vger.kernel.org, linux-kernel@vger.kernel.org Subject: Re: [PATCH v4 12/14] HID: hid-multitouch: support for hovering devices Message-ID: <20121114184307.GA9372@polaris.bitmath.org> References: <1352908766-4492-1-git-send-email-benjamin.tissoires@gmail.com> <1352908766-4492-13-git-send-email-benjamin.tissoires@gmail.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <1352908766-4492-13-git-send-email-benjamin.tissoires@gmail.com> User-Agent: Mutt/1.5.21 (2010-09-15) Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 3431 Lines: 86 On Wed, Nov 14, 2012 at 04:59:24PM +0100, Benjamin Tissoires wrote: > 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 | 18 +++++++++++++++--- > 1 file changed, 15 insertions(+), 3 deletions(-) > > diff --git a/drivers/hid/hid-multitouch.c b/drivers/hid/hid-multitouch.c > index c5b81a7..5f26b2f 100644 > --- a/drivers/hid/hid-multitouch.c > +++ b/drivers/hid/hid-multitouch.c > @@ -53,11 +53,13 @@ MODULE_LICENSE("GPL"); > #define MT_QUIRK_SLOT_IS_CONTACTID_MINUS_ONE (1 << 8) > #define MT_QUIRK_NO_AREA (1 << 9) > #define MT_QUIRK_IGNORE_DUPLICATES (1 << 10) > +#define MT_QUIRK_HOVERING (1 << 11) > > struct mt_slot { > __s32 x, y, cx, cy, p, w, h; > __s32 contactid; /* the device ContactID assigned to this slot */ > bool touch_state; /* is the touch valid? */ > + bool inrange_state; /* is the finger in proximity of the sensor? */ > }; > > struct mt_class { > @@ -392,6 +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_HOVERING) { > + 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; > @@ -521,9 +529,9 @@ static void mt_complete_slot(struct mt_device *td, struct input_dev *input) > > input_mt_slot(input, slotnum); > input_mt_report_slot_state(input, MT_TOOL_FINGER, > - s->touch_state); > - if (s->touch_state) { > - /* this finger is on the screen */ > + s->touch_state || s->inrange_state); > + if (s->touch_state || s->inrange_state) { > + /* this finger is in proximity of the sensor */ > int wide = (s->w > s->h); > /* divided by two to match visual scale of touch */ > int major = max(s->w, s->h) >> 1; > @@ -533,6 +541,8 @@ static void mt_complete_slot(struct mt_device *td, struct input_dev *input) > input_event(input, EV_ABS, ABS_MT_POSITION_Y, s->y); > input_event(input, EV_ABS, ABS_MT_TOOL_X, s->cx); > input_event(input, EV_ABS, ABS_MT_TOOL_Y, s->cy); > + input_event(input, EV_ABS, ABS_MT_DISTANCE, > + !s->touch_state); > 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); > @@ -565,6 +575,8 @@ 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_HOVERING) > + td->curdata.inrange_state = value; > break; > case HID_DG_TIPSWITCH: > if (quirks & MT_QUIRK_NOT_SEEN_MEANS_UP) > -- > 1.8.0 > Reviewed-by: Henrik Rydberg Thanks, Henrik -- 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/