From patchwork Tue Dec 1 01:02:00 2015 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Andy Lutomirski X-Patchwork-Id: 7731351 Return-Path: X-Original-To: patchwork-platform-driver-x86@patchwork.kernel.org Delivered-To: patchwork-parsemail@patchwork2.web.kernel.org Received: from mail.kernel.org (mail.kernel.org [198.145.29.136]) by patchwork2.web.kernel.org (Postfix) with ESMTP id 89A23BEEE1 for ; Tue, 1 Dec 2015 01:02:20 +0000 (UTC) Received: from mail.kernel.org (localhost [127.0.0.1]) by mail.kernel.org (Postfix) with ESMTP id A05F920641 for ; Tue, 1 Dec 2015 01:02:19 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id A067E20663 for ; Tue, 1 Dec 2015 01:02:17 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1755273AbbLABCO (ORCPT ); Mon, 30 Nov 2015 20:02:14 -0500 Received: from mail.kernel.org ([198.145.29.136]:46303 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1754964AbbLABCN (ORCPT ); Mon, 30 Nov 2015 20:02:13 -0500 Received: from mail.kernel.org (localhost [127.0.0.1]) by mail.kernel.org (Postfix) with ESMTP id 1714620632; Tue, 1 Dec 2015 01:02:12 +0000 (UTC) Received: from localhost (c-71-202-137-17.hsd1.ca.comcast.net [71.202.137.17]) (using TLSv1.2 with cipher AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPSA id 3AB1120641; Tue, 1 Dec 2015 01:02:11 +0000 (UTC) From: Andy Lutomirski To: Darren Hart Cc: Matthew Garrett , linux-acpi@vger.kernel.org, platform-driver-x86@vger.kernel.org, Mario Limonciello , =?UTF-8?q?Pali=20Roh=C3=A1r?= , Andy Lutomirski Subject: [PATCH v2 2/3] dell-wmi: Support new hotkeys on the XPS 13 9350 (Skylake) Date: Mon, 30 Nov 2015 17:02:00 -0800 Message-Id: X-Mailer: git-send-email 2.5.0 In-Reply-To: References: In-Reply-To: References: X-Spam-Status: No, score=-6.9 required=5.0 tests=BAYES_00, RCVD_IN_DNSWL_HI, T_RP_MATCHES_RCVD, UNPARSEABLE_RELAY autolearn=unavailable version=3.3.1 X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on mail.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP Sender: platform-driver-x86-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: platform-driver-x86@vger.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP The XPS 13 9350 sends WMI keypress events that aren't enumerated in the DMI table. Add a table listing them. To avoid breaking things that worked before, these un-enumerated hotkeys won't be used if the DMI table maps them to something else. FWIW, it appears that the DMI table may be a legacy thing and we might want to rethink how we handle events in general. As an example, a whole lot of things map to KEY_PROG3 via the DMI table. So far, this doesn't send keypress events for any of the new events. Depnding on whether we figure out exactly what needs to happen to get the wireless button working in time for Linux 4.5, we might want to temporarily handle it in dell-wmi. Signed-off-by: Andy Lutomirski --- drivers/platform/x86/dell-wmi.c | 59 ++++++++++++++++++++++++++++++++++++----- 1 file changed, 52 insertions(+), 7 deletions(-) diff --git a/drivers/platform/x86/dell-wmi.c b/drivers/platform/x86/dell-wmi.c index ad6e965c5862..baff658a3621 100644 --- a/drivers/platform/x86/dell-wmi.c +++ b/drivers/platform/x86/dell-wmi.c @@ -161,6 +161,27 @@ static const u16 bios_to_linux_keycode[256] __initconst = { [255] = KEY_PROG3, }; +/* These are applied if the hk table is present and doesn't override them. */ +static const struct key_entry dell_wmi_extra_keymap[] __initconst = { + /* Fn-lock */ + { KE_IGNORE, 0x151, { KEY_RESERVED } }, + + /* Change keyboard illumination */ + { KE_IGNORE, 0x152, { KEY_KBDILLUMTOGGLE } }, + + /* + * Radio disable (notify only -- there is no model for which the + * WMI event is supposed to trigger an action. + */ + { KE_IGNORE, 0x153, { KEY_RFKILL } }, + + /* RGB keyboard backlight control */ + { KE_IGNORE, 0x154, { KEY_RESERVED } }, + + /* Stealth mode toggle */ + { KE_IGNORE, 0x155, { KEY_RESERVED } }, +}; + static struct input_dev *dell_wmi_input_dev; static void dell_wmi_process_key(int reported_key) @@ -319,9 +340,10 @@ static const struct key_entry * __init dell_wmi_prepare_new_keymap(void) int hotkey_num = (dell_bios_hotkey_table->header.length - 4) / sizeof(struct dell_bios_keymap_entry); struct key_entry *keymap; - int i; + int i, pos = 0, num_bios_keys; - keymap = kcalloc(hotkey_num + 1, sizeof(struct key_entry), GFP_KERNEL); + keymap = kcalloc(hotkey_num + ARRAY_SIZE(dell_wmi_extra_keymap), + sizeof(struct key_entry), GFP_KERNEL); if (!keymap) return NULL; @@ -333,14 +355,37 @@ static const struct key_entry * __init dell_wmi_prepare_new_keymap(void) KEY_RESERVED; if (keycode == KEY_KBDILLUMTOGGLE) - keymap[i].type = KE_IGNORE; + keymap[pos].type = KE_IGNORE; else - keymap[i].type = KE_KEY; - keymap[i].code = bios_entry->scancode; - keymap[i].keycode = keycode; + keymap[pos].type = KE_KEY; + keymap[pos].code = bios_entry->scancode; + keymap[pos].keycode = keycode; + + pos++; + } + + num_bios_keys = pos; + + for (i = 0; i < ARRAY_SIZE(dell_wmi_extra_keymap); i++) { + int j; + + /* + * Check if we've already found this scancode. This takes + * quadratic time, but it doesn't matter unless the list + * of extra keys gets very long. + */ + for (j = 0; j < num_bios_keys; j++) + if (keymap[j].code == dell_wmi_extra_keymap[i].code) + goto skip; + + keymap[pos] = dell_wmi_extra_keymap[i]; + pos++; + +skip: + ; } - keymap[hotkey_num].type = KE_END; + keymap[pos].type = KE_END; return keymap; }