From patchwork Wed Jan 26 16:18:25 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Benjamin Tissoires X-Patchwork-Id: 538356 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 68A63C28CF5 for ; Wed, 26 Jan 2022 16:19:07 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S242774AbiAZQTG (ORCPT ); Wed, 26 Jan 2022 11:19:06 -0500 Received: from us-smtp-delivery-124.mimecast.com ([170.10.129.124]:51209 "EHLO us-smtp-delivery-124.mimecast.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S242785AbiAZQTE (ORCPT ); Wed, 26 Jan 2022 11:19:04 -0500 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1643213944; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=LTEskCYipmEYa3P9pdqv0PwdXf6r+e7EEf/JZcOom+Y=; b=YfMOmGPRWLwCUR/Hn8Q9yKurWl3b9SPzc7fXB/As90vahZAeX/1+zmWF1BV19hRfQ6VlHR rnk3y2KroS8/1jsJb6y8FYAGVQYtWdHfJLXD2PE/lWUSBOffsahXeNoS1itFoPC539UqDP rotShbAUL/1TJboEw+dcPRZICRpsKIM= Received: from mimecast-mx01.redhat.com (mimecast-mx01.redhat.com [209.132.183.4]) by relay.mimecast.com with ESMTP with STARTTLS (version=TLSv1.2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id us-mta-317-zQ91oVP8OcmwEdQlzWXtDQ-1; Wed, 26 Jan 2022 11:19:00 -0500 X-MC-Unique: zQ91oVP8OcmwEdQlzWXtDQ-1 Received: from smtp.corp.redhat.com (int-mx04.intmail.prod.int.phx2.redhat.com [10.5.11.14]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mimecast-mx01.redhat.com (Postfix) with ESMTPS id E30FD10247A8; Wed, 26 Jan 2022 16:18:58 +0000 (UTC) Received: from plouf.redhat.com (unknown [10.39.193.93]) by smtp.corp.redhat.com (Postfix) with ESMTP id 3A76E798DD; Wed, 26 Jan 2022 16:18:56 +0000 (UTC) From: Benjamin Tissoires To: Jiri Kosina , Dmitry Torokhov , Jonathan Corbet , =?utf-8?q?Ahelenia_Ziemia=C5=84ska?= , Ping Cheng , Aaron Armstrong Skomra , Jason Gerecke , Peter Hutterer Cc: linux-input@vger.kernel.org, linux-doc@vger.kernel.org, linux-kernel@vger.kernel.org, Benjamin Tissoires Subject: [PATCH 05/12] HID: input: rework spaghetti code with switch statements Date: Wed, 26 Jan 2022 17:18:25 +0100 Message-Id: <20220126161832.3193805-6-benjamin.tissoires@redhat.com> In-Reply-To: <20220126161832.3193805-1-benjamin.tissoires@redhat.com> References: <20220126161832.3193805-1-benjamin.tissoires@redhat.com> MIME-Version: 1.0 X-Scanned-By: MIMEDefang 2.79 on 10.5.11.14 Precedence: bulk List-ID: X-Mailing-List: linux-input@vger.kernel.org Instead of using multiple `if (a == b)`, use the switch statement which has been done exactly for that. There should be no functional change (I don't expect moving down HID_QUIRK_{X|Y}_INVERT having any impact. Signed-off-by: Benjamin Tissoires --- drivers/hid/hid-input.c | 80 ++++++++++++++++++++++------------------- 1 file changed, 43 insertions(+), 37 deletions(-) diff --git a/drivers/hid/hid-input.c b/drivers/hid/hid-input.c index d2562497a726..54b3e9c5ccc4 100644 --- a/drivers/hid/hid-input.c +++ b/drivers/hid/hid-input.c @@ -1354,12 +1354,6 @@ void hidinput_hid_event(struct hid_device *hid, struct hid_field *field, struct input = field->hidinput->input; - if (usage->type == EV_ABS && - (((*quirks & HID_QUIRK_X_INVERT) && usage->code == ABS_X) || - ((*quirks & HID_QUIRK_Y_INVERT) && usage->code == ABS_Y))) { - value = field->logical_maximum - value; - } - if (usage->hat_min < usage->hat_max || usage->hat_dir) { int hat_dir = usage->hat_dir; if (!hat_dir) @@ -1370,12 +1364,12 @@ void hidinput_hid_event(struct hid_device *hid, struct hid_field *field, struct return; } - if (usage->hid == HID_DG_INVERT) { + switch (usage->hid) { + case HID_DG_INVERT: *quirks = value ? (*quirks | HID_QUIRK_INVERT) : (*quirks & ~HID_QUIRK_INVERT); return; - } - if (usage->hid == HID_DG_INRANGE) { + case HID_DG_INRANGE: if (value) { input_event(input, usage->type, (*quirks & HID_QUIRK_INVERT) ? BTN_TOOL_RUBBER : usage->code, 1); return; @@ -1383,46 +1377,58 @@ void hidinput_hid_event(struct hid_device *hid, struct hid_field *field, struct input_event(input, usage->type, usage->code, 0); input_event(input, usage->type, BTN_TOOL_RUBBER, 0); return; - } - if (usage->hid == HID_DG_TIPPRESSURE && (*quirks & HID_QUIRK_NOTOUCH)) { - int a = field->logical_minimum; - int b = field->logical_maximum; - input_event(input, EV_KEY, BTN_TOUCH, value > a + ((b - a) >> 3)); - } + case HID_DG_TIPPRESSURE: + if (*quirks & HID_QUIRK_NOTOUCH) { + int a = field->logical_minimum; + int b = field->logical_maximum; + + input_event(input, EV_KEY, BTN_TOUCH, value > a + ((b - a) >> 3)); + } + break; - if (usage->hid == (HID_UP_PID | 0x83UL)) { /* Simultaneous Effects Max */ + case HID_UP_PID | 0x83UL: /* Simultaneous Effects Max */ dbg_hid("Maximum Effects - %d\n",value); return; - } - if (usage->hid == (HID_UP_PID | 0x7fUL)) { + case HID_UP_PID | 0x7fUL: dbg_hid("PID Pool Report\n"); return; } - if ((usage->type == EV_KEY) && (usage->code == 0)) /* Key 0 is "unassigned", not KEY_UNKNOWN */ - return; + switch (usage->type) { + case EV_KEY: + if (usage->code == 0) /* Key 0 is "unassigned", not KEY_UNKNOWN */ + return; + break; - if ((usage->type == EV_REL) && (usage->code == REL_WHEEL_HI_RES || - usage->code == REL_HWHEEL_HI_RES)) { - hidinput_handle_scroll(usage, input, value); - return; - } + case EV_REL: + if (usage->code == REL_WHEEL_HI_RES || + usage->code == REL_HWHEEL_HI_RES) { + hidinput_handle_scroll(usage, input, value); + return; + } + break; - if ((usage->type == EV_ABS) && (field->flags & HID_MAIN_ITEM_RELATIVE) && - (usage->code == ABS_VOLUME)) { - int count = abs(value); - int direction = value > 0 ? KEY_VOLUMEUP : KEY_VOLUMEDOWN; - int i; + case EV_ABS: + if ((field->flags & HID_MAIN_ITEM_RELATIVE) && + usage->code == ABS_VOLUME) { + int count = abs(value); + int direction = value > 0 ? KEY_VOLUMEUP : KEY_VOLUMEDOWN; + int i; + + for (i = 0; i < count; i++) { + input_event(input, EV_KEY, direction, 1); + input_sync(input); + input_event(input, EV_KEY, direction, 0); + input_sync(input); + } + return; - for (i = 0; i < count; i++) { - input_event(input, EV_KEY, direction, 1); - input_sync(input); - input_event(input, EV_KEY, direction, 0); - input_sync(input); - } - return; + } else if (((*quirks & HID_QUIRK_X_INVERT) && usage->code == ABS_X) || + ((*quirks & HID_QUIRK_Y_INVERT) && usage->code == ABS_Y)) + value = field->logical_maximum - value; + break; } /*