From patchwork Thu Jun 7 07:54:43 2018 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Benjamin Tissoires X-Patchwork-Id: 10451311 Return-Path: Received: from mail.wl.linuxfoundation.org (pdx-wl-mail.web.codeaurora.org [172.30.200.125]) by pdx-korg-patchwork.web.codeaurora.org (Postfix) with ESMTP id 51B4F60375 for ; Thu, 7 Jun 2018 07:57:07 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 402C72908E for ; Thu, 7 Jun 2018 07:57:07 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id 3493E294D9; Thu, 7 Jun 2018 07:57:07 +0000 (UTC) X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on pdx-wl-mail.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-7.9 required=2.0 tests=BAYES_00, MAILING_LIST_MULTI, RCVD_IN_DNSWL_HI autolearn=unavailable version=3.3.1 Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 63AB629820 for ; Thu, 7 Jun 2018 07:56:57 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752565AbeFGH4m (ORCPT ); Thu, 7 Jun 2018 03:56:42 -0400 Received: from mx3-rdu2.redhat.com ([66.187.233.73]:55462 "EHLO mx1.redhat.com" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S1753517AbeFGHzH (ORCPT ); Thu, 7 Jun 2018 03:55:07 -0400 Received: from smtp.corp.redhat.com (int-mx04.intmail.prod.int.rdu2.redhat.com [10.11.54.4]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mx1.redhat.com (Postfix) with ESMTPS id CD49440704B0; Thu, 7 Jun 2018 07:55:06 +0000 (UTC) Received: from plouf.banquise.eu.com (ovpn-116-40.ams2.redhat.com [10.36.116.40]) by smtp.corp.redhat.com (Postfix) with ESMTP id 889D32026993; Thu, 7 Jun 2018 07:55:05 +0000 (UTC) From: Benjamin Tissoires To: Jiri Kosina , Dmitry Torokhov Cc: Mario.Limonciello@dell.com, Peter Hutterer , linux-input@vger.kernel.org, linux-kernel@vger.kernel.org, Benjamin Tissoires Subject: [PATCH v2 08/13] HID: input: enable Totem on the Dell Canvas 27 Date: Thu, 7 Jun 2018 09:54:43 +0200 Message-Id: <20180607075448.5706-9-benjamin.tissoires@redhat.com> In-Reply-To: <20180607075448.5706-1-benjamin.tissoires@redhat.com> References: <20180607075448.5706-1-benjamin.tissoires@redhat.com> X-Scanned-By: MIMEDefang 2.78 on 10.11.54.4 X-Greylist: Sender IP whitelisted, not delayed by milter-greylist-4.5.16 (mx1.redhat.com [10.11.55.7]); Thu, 07 Jun 2018 07:55:06 +0000 (UTC) X-Greylist: inspected by milter-greylist-4.5.16 (mx1.redhat.com [10.11.55.7]); Thu, 07 Jun 2018 07:55:06 +0000 (UTC) for IP:'10.11.54.4' DOMAIN:'int-mx04.intmail.prod.int.rdu2.redhat.com' HELO:'smtp.corp.redhat.com' FROM:'benjamin.tissoires@redhat.com' RCPT:'' Sender: linux-input-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-input@vger.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP The Dell Canvas 27 has a tool that can be put on the surface and acts as a dial. The firmware processes the detection of the tool and forward regular HID reports with X, Y, Azimuth, rotation, width/height. The firmware also exports Contact ID, Countact Count which may hint that several totems can be used at the same time (the FW only supports one). We can tell that MT_TOOL_DIAL will be reported by setting the min/max of ABS_MT_TOOL_TYPE to MT_TOOL_DIAL. This tool is aimed at being used by the system and not the applications, so the user space processing should not go through the regular touch inputs. We set INPUT_PROP_DIRECT which applies ID_INPUT_TOUCHSCREEN to this new type of devices, but we will counter this for the time being with the special udev hwdb entry mentioned above. Link: https://bugzilla.redhat.com/show_bug.cgi?id=1511846 Signed-off-by: Benjamin Tissoires --- changes in v2: - manually declare ABS_MT_TOOL_TYPE and set its min/max to MT_TOOL_DIAL to explain which tool it will set --- drivers/hid/hid-input.c | 3 +++ drivers/hid/hid-multitouch.c | 48 +++++++++++++++++++++++++++++++------------- include/linux/hid.h | 6 ++++++ 3 files changed, 43 insertions(+), 14 deletions(-) diff --git a/drivers/hid/hid-input.c b/drivers/hid/hid-input.c index ab93dd5927c3..4e94ea3e280a 100644 --- a/drivers/hid/hid-input.c +++ b/drivers/hid/hid-input.c @@ -1550,6 +1550,9 @@ static struct hid_input *hidinput_allocate(struct hid_device *hid, case HID_GD_WIRELESS_RADIO_CTLS: suffix = "Wireless Radio Control"; break; + case HID_GD_SYSTEM_MULTIAXIS: + suffix = "System Multi Axis"; + break; default: break; } diff --git a/drivers/hid/hid-multitouch.c b/drivers/hid/hid-multitouch.c index 346e9caef6f3..a4a274ebfbef 100644 --- a/drivers/hid/hid-multitouch.c +++ b/drivers/hid/hid-multitouch.c @@ -665,7 +665,8 @@ static int mt_touch_input_mapping(struct hid_device *hdev, struct hid_input *hi, /* * Model touchscreens providing buttons as touchpads. */ - if ((usage->hid & HID_USAGE_PAGE) == HID_UP_BUTTON) { + if (field->application == HID_DG_TOUCHSCREEN && + (usage->hid & HID_USAGE_PAGE) == HID_UP_BUTTON) { app->mt_flags |= INPUT_MT_POINTER; td->inputmode_value = MT_INPUTMODE_TOUCHPAD; } @@ -692,6 +693,19 @@ static int mt_touch_input_mapping(struct hid_device *hdev, struct hid_input *hi, set_abs(hi->input, code, field, cls->sn_move); + /* + * A system multi-axis that exports X and Y has a high + * chance of being used directly on a surface + */ + if (field->application == HID_GD_SYSTEM_MULTIAXIS) { + __set_bit(INPUT_PROP_DIRECT, + hi->input->propbit); + input_set_abs_params(hi->input, + ABS_MT_TOOL_TYPE, + MT_TOOL_DIAL, + MT_TOOL_DIAL, 0, 0); + } + return 1; case HID_GD_Y: if (prev_usage && (prev_usage->hid == usage->hid)) { @@ -725,7 +739,9 @@ static int mt_touch_input_mapping(struct hid_device *hdev, struct hid_input *hi, MT_STORE_FIELD(confidence_state); return 1; case HID_DG_TIPSWITCH: - input_set_capability(hi->input, EV_KEY, BTN_TOUCH); + if (field->application != HID_GD_SYSTEM_MULTIAXIS) + input_set_capability(hi->input, + EV_KEY, BTN_TOUCH); MT_STORE_FIELD(tip_state); return 1; case HID_DG_CONTACTID: @@ -802,6 +818,10 @@ static int mt_touch_input_mapping(struct hid_device *hdev, struct hid_input *hi, field->application == HID_DG_TOUCHPAD && (usage->hid & HID_USAGE) > 1) code--; + + if (field->application == HID_GD_SYSTEM_MULTIAXIS) + code = BTN_0 + ((usage->hid - 1) & HID_USAGE); + hid_map_usage(hi, usage, bit, max, EV_KEY, code); input_set_capability(hi->input, EV_KEY, code); return 1; @@ -899,6 +919,7 @@ static int mt_process_slot(struct mt_device *td, struct input_dev *input, bool inrange_state = false; int active; int slotnum; + int tool = MT_TOOL_FINGER; if (!slot) return -EINVAL; @@ -939,8 +960,11 @@ static int mt_process_slot(struct mt_device *td, struct input_dev *input, active = (*slot->tip_state || inrange_state) && confidence_state; + if (app->application == HID_GD_SYSTEM_MULTIAXIS) + tool = MT_TOOL_DIAL; + input_mt_slot(input, slotnum); - input_mt_report_slot_state(input, MT_TOOL_FINGER, active); + input_mt_report_slot_state(input, tool, active); if (active) { /* this finger is in proximity of the sensor */ int wide = (*slot->w > *slot->h); @@ -1203,6 +1227,7 @@ static int mt_input_mapping(struct hid_device *hdev, struct hid_input *hi, field->application != HID_GD_SYSTEM_CONTROL && field->application != HID_CP_CONSUMER_CONTROL && field->application != HID_GD_WIRELESS_RADIO_CTLS && + field->application != HID_GD_SYSTEM_MULTIAXIS && !(field->application == HID_VD_ASUS_CUSTOM_MEDIA_KEYS && application->quirks & MT_QUIRK_ASUS_CUSTOM_UP)) return -1; @@ -1230,9 +1255,7 @@ static int mt_input_mapping(struct hid_device *hdev, struct hid_input *hi, return 1; } - if (rdata->is_mt_collection && - (field->application == HID_DG_TOUCHSCREEN || - field->application == HID_DG_TOUCHPAD)) + if (rdata->is_mt_collection) return mt_touch_input_mapping(hdev, hi, field, usage, bit, max, application); @@ -1244,15 +1267,11 @@ static int mt_input_mapped(struct hid_device *hdev, struct hid_input *hi, struct hid_field *field, struct hid_usage *usage, unsigned long **bit, int *max) { - /* - * some egalax touchscreens have "application == HID_DG_TOUCHSCREEN" - * for the stylus. - */ - if (field->physical == HID_DG_STYLUS) - return 0; + struct mt_device *td = hid_get_drvdata(hdev); + struct mt_report_data *rdata; - if (field->application == HID_DG_TOUCHSCREEN || - field->application == HID_DG_TOUCHPAD) { + rdata = mt_find_report_data(td, field->report); + if (rdata && rdata->is_mt_collection) { /* We own these mappings, tell hid-input to ignore them */ return -1; } @@ -1460,6 +1479,7 @@ static int mt_input_configured(struct hid_device *hdev, struct hid_input *hi) case HID_GD_SYSTEM_CONTROL: case HID_CP_CONSUMER_CONTROL: case HID_GD_WIRELESS_RADIO_CTLS: + case HID_GD_SYSTEM_MULTIAXIS: /* already handled by hid core */ break; case HID_DG_TOUCHSCREEN: diff --git a/include/linux/hid.h b/include/linux/hid.h index 773bcb1d4044..2e4498d52a2f 100644 --- a/include/linux/hid.h +++ b/include/linux/hid.h @@ -190,6 +190,12 @@ struct hid_item { * http://www.usb.org/developers/hidpage/HUTRR40RadioHIDUsagesFinal.pdf */ #define HID_GD_WIRELESS_RADIO_CTLS 0x0001000c +/* + * System Multi-Axis, see: + * http://www.usb.org/developers/hidpage/HUTRR62_-_Generic_Desktop_CA_for_System_Multi-Axis_Controllers.txt + */ +#define HID_GD_SYSTEM_MULTIAXIS 0x0001000e + #define HID_GD_X 0x00010030 #define HID_GD_Y 0x00010031 #define HID_GD_Z 0x00010032