From patchwork Thu May 20 08:48:05 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Patchwork-Submitter: =?utf-8?q?Thomas_Wei=C3=9Fschuh?= X-Patchwork-Id: 444946 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-16.6 required=3.0 tests=BAYES_00,DKIM_INVALID, DKIM_SIGNED, HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_CR_TRAILER, INCLUDES_PATCH, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,USER_AGENT_GIT autolearn=unavailable autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id AAEDEC433B4 for ; Thu, 20 May 2021 08:48:20 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 81D1D60234 for ; Thu, 20 May 2021 08:48:20 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S230469AbhETItk (ORCPT ); Thu, 20 May 2021 04:49:40 -0400 Received: from todd.t-8ch.de ([159.69.126.157]:37085 "EHLO todd.t-8ch.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S230458AbhETItk (ORCPT ); Thu, 20 May 2021 04:49:40 -0400 From: =?utf-8?q?Thomas_Wei=C3=9Fschuh?= DKIM-Signature: v=1; a=rsa-sha256; c=simple/simple; d=weissschuh.net; s=mail; t=1621500498; bh=2QBntlyguLyQL1zPzuDVF9QZ1km+f4GFMHBcOu36OkU=; h=From:To:Cc:Subject:Date:From; b=JFG2pna6HnVPJnNe4a6KAQ3nnG8cRL5HWxBbd1yoc9pfutfb+ju8X2J2S7f1dVLv7 N0HvLy0/wJnx7OtOP3sUoHRaM3VoOE+y4OMnFPi6gmVgZ2nDoGUktDPpyzZ761vtcN pe8m0nmaYajgA5Fe3xPrNsCUrAszGVGjDVsYTJ5c= To: linux-input@vger.kernel.org, Jiri Kosina , Benjamin Tissoires , Hans de Goede Cc: =?utf-8?q?Thomas_Wei=C3=9Fschuh?= , linux-kernel@vger.kernel.org Subject: [PATCH v3] HID: input: Add support for Programmable Buttons Date: Thu, 20 May 2021 10:48:05 +0200 Message-Id: <20210520084805.685486-1-linux@weissschuh.net> X-Mailer: git-send-email 2.31.1 MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-input@vger.kernel.org Map them to KEY_MACRO# event codes. These buttons are defined by HID as follows: "The user defines the function of these buttons to control software applications or GUI objects." This matches the semantics of the KEY_MACRO# input event codes that Linux supports. Signed-off-by: Thomas Weißschuh --- v1: https://lore.kernel.org/linux-input/20210519160349.609690-1-linux@weissschuh.net/ v1 -> v2: Only handle the 30 keys known v2: https://lore.kernel.org/linux-input/20210519174345.614467-1-linux@weissschuh.net/ v2 -> v3: * Use hex constants for consistency * Validate that the button is part of a "Programmable Buttons" Named Array. Otherwise the condition would also apply to "Function Buttons". * Ignore non-"Programmable Buttons" buttons. drivers/hid/hid-debug.c | 11 +++++++++++ drivers/hid/hid-input.c | 22 ++++++++++++++++++++++ include/linux/hid.h | 1 + 3 files changed, 34 insertions(+) base-commit: efd8929b9eec1cde120abb36d76dd00ff6711023 diff --git a/drivers/hid/hid-debug.c b/drivers/hid/hid-debug.c index 59f8d716d78f..0e76d9b4530a 100644 --- a/drivers/hid/hid-debug.c +++ b/drivers/hid/hid-debug.c @@ -122,6 +122,7 @@ static const struct hid_usage_entry hid_usage_table[] = { { 9, 0, "Button" }, { 10, 0, "Ordinal" }, { 12, 0, "Consumer" }, + {0, 0x003, "ProgrammableButtons"}, {0, 0x238, "HorizontalWheel"}, { 13, 0, "Digitizers" }, {0, 0x01, "Digitizer"}, @@ -939,6 +940,16 @@ static const char *keys[KEY_MAX + 1] = { [KEY_KBDINPUTASSIST_NEXTGROUP] = "KbdInputAssistNextGroup", [KEY_KBDINPUTASSIST_ACCEPT] = "KbdInputAssistAccept", [KEY_KBDINPUTASSIST_CANCEL] = "KbdInputAssistCancel", + [KEY_MACRO1] = "Macro1", [KEY_MACRO2] = "Macro2", [KEY_MACRO3] = "Macro3", + [KEY_MACRO4] = "Macro4", [KEY_MACRO5] = "Macro5", [KEY_MACRO6] = "Macro6", + [KEY_MACRO7] = "Macro7", [KEY_MACRO8] = "Macro8", [KEY_MACRO9] = "Macro9", + [KEY_MACRO10] = "Macro10", [KEY_MACRO11] = "Macro11", [KEY_MACRO12] = "Macro12", + [KEY_MACRO13] = "Macro13", [KEY_MACRO14] = "Macro14", [KEY_MACRO15] = "Macro15", + [KEY_MACRO16] = "Macro16", [KEY_MACRO17] = "Macro17", [KEY_MACRO18] = "Macro18", + [KEY_MACRO19] = "Macro19", [KEY_MACRO20] = "Macro20", [KEY_MACRO21] = "Macro21", + [KEY_MACRO22] = "Macro22", [KEY_MACRO23] = "Macro23", [KEY_MACRO24] = "Macro24", + [KEY_MACRO25] = "Macro25", [KEY_MACRO26] = "Macro26", [KEY_MACRO27] = "Macro27", + [KEY_MACRO28] = "Macro28", [KEY_MACRO29] = "Macro29", [KEY_MACRO30] = "Macro30", }; static const char *relatives[REL_MAX + 1] = { diff --git a/drivers/hid/hid-input.c b/drivers/hid/hid-input.c index 18f5e28d475c..791a2baf9ccd 100644 --- a/drivers/hid/hid-input.c +++ b/drivers/hid/hid-input.c @@ -567,6 +567,16 @@ static void hidinput_update_battery(struct hid_device *dev, int value) } #endif /* CONFIG_HID_BATTERY_STRENGTH */ +static bool hidinput_field_in_collection(struct hid_device *device, struct hid_field *field, + unsigned int type, unsigned int usage) +{ + struct hid_collection *collection; + + collection = &device->collection[field->usage->collection_index]; + + return collection->type == type && collection->usage == usage; +} + static void hidinput_configure_usage(struct hid_input *hidinput, struct hid_field *field, struct hid_usage *usage) { @@ -632,6 +642,18 @@ static void hidinput_configure_usage(struct hid_input *hidinput, struct hid_fiel else code += BTN_TRIGGER_HAPPY - 0x10; break; + case HID_CP_CONSUMER_CONTROL: + if (hidinput_field_in_collection(device, field, + HID_COLLECTION_NAMED_ARRAY, + HID_CP_PROGRAMMABLEBUTTONS)) { + if (code <= 0x1d) + code += KEY_MACRO1; + else + code += BTN_TRIGGER_HAPPY - 0x1e; + } else { + goto ignore; + } + break; default: switch (field->physical) { case HID_GD_MOUSE: diff --git a/include/linux/hid.h b/include/linux/hid.h index 271021e20a3f..fb0e4dde6175 100644 --- a/include/linux/hid.h +++ b/include/linux/hid.h @@ -102,6 +102,7 @@ struct hid_item { #define HID_COLLECTION_PHYSICAL 0 #define HID_COLLECTION_APPLICATION 1 #define HID_COLLECTION_LOGICAL 2 +#define HID_COLLECTION_NAMED_ARRAY 4 /* * HID report descriptor global item tags