From patchwork Tue Apr 5 18:39:53 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Pablo Ceballos X-Patchwork-Id: 12801990 X-Patchwork-Delegate: jikos@jikos.cz Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 66049C433EF for ; Tue, 5 Apr 2022 21:31:49 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S229753AbiDEV3m (ORCPT ); Tue, 5 Apr 2022 17:29:42 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:33122 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1573274AbiDESlz (ORCPT ); Tue, 5 Apr 2022 14:41:55 -0400 Received: from mail-yw1-x114a.google.com (mail-yw1-x114a.google.com [IPv6:2607:f8b0:4864:20::114a]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 3C90620BE2 for ; Tue, 5 Apr 2022 11:39:57 -0700 (PDT) Received: by mail-yw1-x114a.google.com with SMTP id 00721157ae682-2eadd524e72so1182877b3.6 for ; Tue, 05 Apr 2022 11:39:57 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=20210112; h=date:message-id:mime-version:subject:from:to:cc; bh=kpZJZ6BC0teJcS/Va/HLoxzrjVYiRhmbSvuUm1Ha8sQ=; b=ZdvRyRnPU8Kh82lplK03SdRZOePvmaw21DelWV1zTSqS/wjCkoUIYoY61x69HDa0BB BkENG+5p3VPqwecV9yEgRiRisNcnE3VeVVW7AOScnZd4XupmdoHFS5S2gKJLzE7GHY6A zGXVjMCER8dEsCVSRHsmmtEvVKuVyK3GMttUBmYSjf/DRoGPcWgyJ5rDCC+Ru+9zo5Sw 1rj0cV0XTVzlX93A55tOHgnaoeRzXzMAf01FQGmrjBjD9UtlB3cKC05sNClQc/ugUTWR 4mJGO2ekgPApmCPfGhow69H81wYKXuudrt6rJEg4wFn2YrxJLtcu2iCzeQjtlpzeUEdN /yNg== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; h=x-gm-message-state:date:message-id:mime-version:subject:from:to:cc; bh=kpZJZ6BC0teJcS/Va/HLoxzrjVYiRhmbSvuUm1Ha8sQ=; b=KNY9Sk49V11N593lYra37CO/lVOrWo7hiUZi1BcLmhwn5dGTp7VnCQd9j+nLrsRAvc U1Yor6p28hNZk3kGVkqJFBaIRP6u+IeGGdSX5hHxgt936IuwWM5IMmUGeAj6hnmaVWpL ZdNUCTDKTBwqYhfZR6c3jW0pjQiz+W3uqxOvOJJZ+vJN0ZByBA0YmB3C4nneQ4MoyCb3 dQlhmM2yJtrAztiQBL+3sx2BQC8AIafbjWGr0XJeoxLHwhf3mezTu/sGrjfldyxHhdUH ld4sApZ8Pjsi5HmyQ1ZvhGhz7Osu8WYDBJ1Yqeqh0kzX8g0C46PickmBZP0Fd9PH62jr NuNw== X-Gm-Message-State: AOAM5322FRvPH4bJMHWjPlNz7WDUMlhZc6lqXzZ7F+TohYQrVJu+7nsw HDaWGPMmoWltlwyue2qB+7OWT5jbxXAcdI8= X-Google-Smtp-Source: ABdhPJzp+IkXPL1X2MLlP92SbOMwqwQY57HoLXPf85DlePcIcZmNDwM+GbgvJ2bvPWH0yqVKexXNR2xK3S7Rwsc= X-Received: from pceballos.nyc.corp.google.com ([2620:0:1003:510:9936:68aa:f9b7:b13b]) (user=pceballos job=sendgmr) by 2002:a05:690c:821:b0:2eb:5d96:2709 with SMTP id by1-20020a05690c082100b002eb5d962709mr3929236ywb.147.1649183996466; Tue, 05 Apr 2022 11:39:56 -0700 (PDT) Date: Tue, 5 Apr 2022 14:39:53 -0400 Message-Id: <20220405183953.2094007-1-pceballos@google.com> Mime-Version: 1.0 X-Mailer: git-send-email 2.35.1.1094.g7c7d902a7c-goog Subject: [PATCH] HID: Driver for Google Hangouts Meet Speakermic From: Pablo Ceballos To: jikos@kernel.org, benjamin.tissoires@redhat.com, linux-kernel@vger.kernel.org, linux-input@vger.kernel.org Cc: Pablo Ceballos Precedence: bulk List-ID: X-Mailing-List: linux-input@vger.kernel.org This driver works around a problem with the HID usage sent by this device for the mute button. It prevents key events from being generated for that HID usage since they would be incorrect. Signed-off-by: Pablo Ceballos --- drivers/hid/Kconfig | 12 ++++++++ drivers/hid/Makefile | 1 + drivers/hid/hid-google-atrus.c | 55 ++++++++++++++++++++++++++++++++++ drivers/hid/hid-ids.h | 1 + 4 files changed, 69 insertions(+) create mode 100644 drivers/hid/hid-google-atrus.c diff --git a/drivers/hid/Kconfig b/drivers/hid/Kconfig index f5544157576c..d4b6be827d15 100644 --- a/drivers/hid/Kconfig +++ b/drivers/hid/Kconfig @@ -403,6 +403,18 @@ config HOLTEK_FF Say Y here if you have a Holtek On Line Grip based game controller and want to have force feedback support for it. +config HID_GOOGLE_ATRUS + tristate "Google Hangouts Meet Speakermic" + depends on USB_HID + help + This selects a driver for the Google Hangouts Meet Speakermic. + + This driver works around a problem with the HID usage sent by this + device for the mute button. It prevents key events from being generated + for that HID usage since they would be incorrect. + + Say Y here if you have a Google Hangouts Meet Speakermic. + config HID_GOOGLE_HAMMER tristate "Google Hammer Keyboard" depends on USB_HID && LEDS_CLASS && CROS_EC diff --git a/drivers/hid/Makefile b/drivers/hid/Makefile index 6d3e630e81af..2ee446b5b953 100644 --- a/drivers/hid/Makefile +++ b/drivers/hid/Makefile @@ -50,6 +50,7 @@ obj-$(CONFIG_HID_FT260) += hid-ft260.o obj-$(CONFIG_HID_GEMBIRD) += hid-gembird.o obj-$(CONFIG_HID_GFRM) += hid-gfrm.o obj-$(CONFIG_HID_GLORIOUS) += hid-glorious.o +obj-$(CONFIG_HID_GOOGLE_ATRUS) += hid-google-atrus.o obj-$(CONFIG_HID_GOOGLE_HAMMER) += hid-google-hammer.o obj-$(CONFIG_HID_VIVALDI) += hid-vivaldi.o obj-$(CONFIG_HID_GT683R) += hid-gt683r.o diff --git a/drivers/hid/hid-google-atrus.c b/drivers/hid/hid-google-atrus.c new file mode 100644 index 000000000000..e136c70e9425 --- /dev/null +++ b/drivers/hid/hid-google-atrus.c @@ -0,0 +1,55 @@ +// SPDX-License-Identifier: GPL-2.0 +/* + * HID driver for Google Hangouts Meet Speakermic + * + * Copyright 2022 Google LLC. + */ + +#include +#include + +#include "hid-ids.h" + +/* + * This driver handles the telephony phone mute HID usage by ignoring it. This + * avoids the default handling by the hid-input driver which is to map this to + * a KEY_MICMUTE event. The issue is that this device implements the phone mute + * HID usage as a toggle switch, where 1 indicates muted, and 0 indicates + * unmuted. However, for an EV_KEY event 1 indicates the key has been pressed + * and 0 indicates it has been released. + */ + +static int atrus_event(struct hid_device *hid, struct hid_field *field, + struct hid_usage *usage, __s32 value) +{ + /* + * Return 1 to indicate no further processing should be done for this + * usage. + */ + return 1; +} + +static const struct hid_device_id atrus_devices[] = { + { HID_DEVICE(BUS_USB, HID_GROUP_GENERIC, + USB_VENDOR_ID_GOOGLE, USB_DEVICE_ID_GOOGLE_ATRUS) }, + { } +}; +MODULE_DEVICE_TABLE(hid, atrus_devices); + +static const struct hid_usage_id atrus_usages[] = { + /* Handle only the Telephony Phone Mute usage. */ + { HID_UP_TELEPHONY | 0x2f, EV_KEY, HID_ANY_ID }, + { HID_TERMINATOR, HID_TERMINATOR, HID_TERMINATOR } +}; + +static struct hid_driver atrus_driver = { + .name = "atrus", + .id_table = atrus_devices, + .usage_table = atrus_usages, + .event = atrus_event, +}; +module_hid_driver(atrus_driver); + +MODULE_AUTHOR("Pablo Ceballos "); +MODULE_DESCRIPTION("Google Hangouts Meet Speakermic USB HID Driver"); +MODULE_LICENSE("GPL"); diff --git a/drivers/hid/hid-ids.h b/drivers/hid/hid-ids.h index 85975031389b..9f6fc5cfbeb9 100644 --- a/drivers/hid/hid-ids.h +++ b/drivers/hid/hid-ids.h @@ -506,6 +506,7 @@ #define USB_DEVICE_ID_GOOGLE_MOONBALL 0x5044 #define USB_DEVICE_ID_GOOGLE_DON 0x5050 #define USB_DEVICE_ID_GOOGLE_EEL 0x5057 +#define USB_DEVICE_ID_GOOGLE_ATRUS 0x8001 #define USB_VENDOR_ID_GOTOP 0x08f2 #define USB_DEVICE_ID_SUPER_Q2 0x007f