From patchwork Tue Jan 17 14:35:31 2017 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Benjamin Tissoires X-Patchwork-Id: 9521289 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 BEE6160244 for ; Tue, 17 Jan 2017 14:59:21 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id B49A92859B for ; Tue, 17 Jan 2017 14:59:21 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id A9A6B285A6; Tue, 17 Jan 2017 14:59:21 +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=-6.9 required=2.0 tests=BAYES_00,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 5C5D22859B for ; Tue, 17 Jan 2017 14:59:21 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1751227AbdAQOgI (ORCPT ); Tue, 17 Jan 2017 09:36:08 -0500 Received: from mx1.redhat.com ([209.132.183.28]:45992 "EHLO mx1.redhat.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751218AbdAQOgG (ORCPT ); Tue, 17 Jan 2017 09:36:06 -0500 Received: from int-mx14.intmail.prod.int.phx2.redhat.com (int-mx14.intmail.prod.int.phx2.redhat.com [10.5.11.27]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mx1.redhat.com (Postfix) with ESMTPS id 265A283F43; Tue, 17 Jan 2017 14:35:57 +0000 (UTC) Received: from plouf.banquise.eu.com (ovpn-116-139.ams2.redhat.com [10.36.116.139]) by int-mx14.intmail.prod.int.phx2.redhat.com (8.14.4/8.14.4) with ESMTP id v0HEZpSP002921; Tue, 17 Jan 2017 09:35:55 -0500 From: Benjamin Tissoires To: Jiri Kosina , Bastien Nocera , Peter Hutterer , Nestor Lopez Casado , Olivier Gay , Simon Wood Cc: linux-input@vger.kernel.org, linux-kernel@vger.kernel.org Subject: [PATCH 01/17] HID: logitech-dj: allow devices to request full pairing information Date: Tue, 17 Jan 2017 15:35:31 +0100 Message-Id: <20170117143547.30488-2-benjamin.tissoires@redhat.com> In-Reply-To: <20170117143547.30488-1-benjamin.tissoires@redhat.com> References: <20170117143547.30488-1-benjamin.tissoires@redhat.com> X-Scanned-By: MIMEDefang 2.68 on 10.5.11.27 X-Greylist: Sender IP whitelisted, not delayed by milter-greylist-4.5.16 (mx1.redhat.com [10.5.110.27]); Tue, 17 Jan 2017 14:35:57 +0000 (UTC) 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 Register 0xB5 should be handled specially no matter what function is used. This allows to retrieve the serial and the Quad ID from hid-logitech-hidpp directly. Signed-off-by: Benjamin Tissoires --- drivers/hid/hid-logitech-dj.c | 17 ++++++++++------- 1 file changed, 10 insertions(+), 7 deletions(-) diff --git a/drivers/hid/hid-logitech-dj.c b/drivers/hid/hid-logitech-dj.c index 5bc6d80..71ce4ca 100644 --- a/drivers/hid/hid-logitech-dj.c +++ b/drivers/hid/hid-logitech-dj.c @@ -692,8 +692,12 @@ static void logi_dj_ll_close(struct hid_device *hid) dbg_hid("%s:%s\n", __func__, hid->phys); } -static u8 unifying_name_query[] = {0x10, 0xff, 0x83, 0xb5, 0x40, 0x00, 0x00}; -static u8 unifying_name_answer[] = {0x11, 0xff, 0x83, 0xb5}; +/* + * Register 0xB5 is "pairing information". It is solely intended for the + * receiver, so do not overwrite the device index. + */ +static u8 unifying_pairing_query[] = {0x10, 0xff, 0x83, 0xb5}; +static u8 unifying_pairing_answer[] = {0x11, 0xff, 0x83, 0xb5}; static int logi_dj_ll_raw_request(struct hid_device *hid, unsigned char reportnum, __u8 *buf, @@ -712,8 +716,8 @@ static int logi_dj_ll_raw_request(struct hid_device *hid, /* special case where we should not overwrite * the device_index */ - if (count == 7 && !memcmp(buf, unifying_name_query, - sizeof(unifying_name_query))) + if (count == 7 && !memcmp(buf, unifying_pairing_query, + sizeof(unifying_pairing_query))) buf[4] |= djdev->device_index - 1; else buf[1] = djdev->device_index; @@ -911,9 +915,8 @@ static int logi_dj_hidpp_event(struct hid_device *hdev, /* special case were the device wants to know its unifying * name */ if (size == HIDPP_REPORT_LONG_LENGTH && - !memcmp(data, unifying_name_answer, - sizeof(unifying_name_answer)) && - ((data[4] & 0xF0) == 0x40)) + !memcmp(data, unifying_pairing_answer, + sizeof(unifying_pairing_answer))) device_index = (data[4] & 0x0F) + 1; else return false;