From patchwork Sun Mar 21 02:26:34 2010 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Yong Wang X-Patchwork-Id: 87210 Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by demeter.kernel.org (8.14.3/8.14.3) with ESMTP id o2L2ZeU8003392 for ; Sun, 21 Mar 2010 02:35:40 GMT Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752821Ab0CUCff (ORCPT ); Sat, 20 Mar 2010 22:35:35 -0400 Received: from mga10.intel.com ([192.55.52.92]:25189 "EHLO fmsmga102.fm.intel.com" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S1752759Ab0CUCfe (ORCPT ); Sat, 20 Mar 2010 22:35:34 -0400 Received: from fmsmga001.fm.intel.com ([10.253.24.23]) by fmsmga102.fm.intel.com with ESMTP; 20 Mar 2010 19:32:08 -0700 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="4.51,281,1267430400"; d="scan'208";a="782563984" Received: from ywang-moblin2.bj.intel.com (HELO localhost) ([172.16.180.96]) by fmsmga001.fm.intel.com with ESMTP; 20 Mar 2010 19:35:17 -0700 Date: Sun, 21 Mar 2010 10:26:34 +0800 From: Yong Wang To: Matthew Garrett , Dmitry Torokhov , Corentin Chary Cc: platform-driver-x86@vger.kernel.org, linux-input@vger.kernel.org Subject: [PATCH v4] eeepc-wmi: new driver for WMI based hotkeys on Eee PC laptops Message-ID: <20100321022634.GA11553@ywang-moblin2.bj.intel.com> MIME-Version: 1.0 Content-Disposition: inline User-Agent: Mutt/1.5.18 (2008-05-17) Sender: linux-input-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-input@vger.kernel.org X-Greylist: IP, sender and recipient auto-whitelisted, not delayed by milter-greylist-4.2.3 (demeter.kernel.org [140.211.167.41]); Sun, 21 Mar 2010 02:35:40 +0000 (UTC) diff --git a/drivers/platform/x86/Kconfig b/drivers/platform/x86/Kconfig index e631dbe..7bec458 100644 --- a/drivers/platform/x86/Kconfig +++ b/drivers/platform/x86/Kconfig @@ -385,6 +385,16 @@ config EEEPC_LAPTOP If you have an Eee PC laptop, say Y or M here. +config EEEPC_WMI + tristate "Eee PC WMI Hotkey Driver (EXPERIMENTAL)" + depends on ACPI_WMI + depends on INPUT + depends on EXPERIMENTAL + ---help--- + Say Y here if you want to support WMI-based hotkeys on Eee PC laptops. + + To compile this driver as a module, choose M here: the module will + be called eeepc-wmi. config ACPI_WMI tristate "WMI" diff --git a/drivers/platform/x86/Makefile b/drivers/platform/x86/Makefile index 9cd9fa0..a906490 100644 --- a/drivers/platform/x86/Makefile +++ b/drivers/platform/x86/Makefile @@ -4,6 +4,7 @@ # obj-$(CONFIG_ASUS_LAPTOP) += asus-laptop.o obj-$(CONFIG_EEEPC_LAPTOP) += eeepc-laptop.o +obj-$(CONFIG_EEEPC_WMI) += eeepc-wmi.o obj-$(CONFIG_MSI_LAPTOP) += msi-laptop.o obj-$(CONFIG_ACPI_CMPC) += classmate-laptop.o obj-$(CONFIG_COMPAL_LAPTOP) += compal-laptop.o diff --git a/drivers/platform/x86/eeepc-wmi.c b/drivers/platform/x86/eeepc-wmi.c new file mode 100644 index 0000000..2466b7b --- /dev/null +++ b/drivers/platform/x86/eeepc-wmi.c @@ -0,0 +1,157 @@ +/* + * Eee PC WMI hotkey driver + * + * Copyright(C) 2010 Intel Corporation. + * + * Portions based on wistron_btns.c: + * Copyright (C) 2005 Miloslav Trmac + * Copyright (C) 2005 Bernhard Rosenkraenzer + * Copyright (C) 2005 Dmitry Torokhov + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA + */ + +#include +#include +#include +#include +#include +#include +#include +#include + +MODULE_AUTHOR("Yong Wang "); +MODULE_DESCRIPTION("Eee PC WMI Hotkey Driver"); +MODULE_LICENSE("GPL"); + +#define EEEPC_WMI_EVENT_GUID "ABBC0F72-8EA1-11D1-00A0-C90629100000" + +MODULE_ALIAS("wmi:"EEEPC_WMI_EVENT_GUID); + +#define NOTIFY_BRNUP_MIN 0x11 +#define NOTIFY_BRNUP_MAX 0x1f +#define NOTIFY_BRNDOWN_MIN 0x20 +#define NOTIFY_BRNDOWN_MAX 0x2e + +static const struct key_entry eeepc_wmi_keymap[] = { + /* Sleep already handled via generic ACPI code */ + { KE_KEY, 0x5d, { KEY_WLAN } }, + { KE_KEY, 0x32, { KEY_MUTE } }, + { KE_KEY, 0x31, { KEY_VOLUMEDOWN } }, + { KE_KEY, 0x30, { KEY_VOLUMEUP } }, + { KE_IGNORE, NOTIFY_BRNDOWN_MIN, { KEY_BRIGHTNESSDOWN } }, + { KE_IGNORE, NOTIFY_BRNUP_MIN, { KEY_BRIGHTNESSUP } }, + { KE_KEY, 0xcc, { KEY_SWITCHVIDEOMODE } }, + { KE_END, 0}, +}; + +static struct input_dev *eeepc_wmi_input_dev; + +static void eeepc_wmi_notify(u32 value, void *context) +{ + struct acpi_buffer response = { ACPI_ALLOCATE_BUFFER, NULL }; + union acpi_object *obj; + acpi_status status; + int code; + + status = wmi_get_event_data(value, &response); + if (status != AE_OK) { + pr_err("EEEPC WMI: bad event status 0x%x\n", status); + return; + } + + obj = (union acpi_object *)response.pointer; + + if (obj && obj->type == ACPI_TYPE_INTEGER) { + code = obj->integer.value; + + if (code >= NOTIFY_BRNUP_MIN && code <= NOTIFY_BRNUP_MAX) + code = NOTIFY_BRNUP_MIN; + else if (code >= NOTIFY_BRNDOWN_MIN && code <= NOTIFY_BRNDOWN_MAX) + code = NOTIFY_BRNDOWN_MIN; + + if (!sparse_keymap_report_event(eeepc_wmi_input_dev, + code, 1, true)) + pr_info("EEEPC WMI: Unknown key %x pressed\n", code); + } + + kfree(obj); +} + +static int eeepc_wmi_input_setup(void) +{ + int err; + + eeepc_wmi_input_dev = input_allocate_device(); + if (!eeepc_wmi_input_dev) + return -ENOMEM; + + eeepc_wmi_input_dev->name = "Eee PC WMI hotkeys"; + eeepc_wmi_input_dev->phys = "wmi/input0"; + eeepc_wmi_input_dev->id.bustype = BUS_HOST; + + err = sparse_keymap_setup(eeepc_wmi_input_dev, eeepc_wmi_keymap, NULL); + if (err) + goto err_free_dev; + + err = input_register_device(eeepc_wmi_input_dev); + if (err) + goto err_free_keymap; + + return 0; + +err_free_keymap: + sparse_keymap_free(eeepc_wmi_input_dev); +err_free_dev: + input_free_device(eeepc_wmi_input_dev); + return err; +} + +static int __init eeepc_wmi_init(void) +{ + int err; + acpi_status status; + + if (!wmi_has_guid(EEEPC_WMI_EVENT_GUID)) { + pr_warning("EEEPC WMI: No known WMI GUID found\n"); + return -ENODEV; + } + + err = eeepc_wmi_input_setup(); + if (err) + return err; + + status = wmi_install_notify_handler(EEEPC_WMI_EVENT_GUID, + eeepc_wmi_notify, NULL); + if (ACPI_FAILURE(status)) { + sparse_keymap_free(eeepc_wmi_input_dev); + input_unregister_device(eeepc_wmi_input_dev); + pr_err("EEEPC WMI: Unable to register notify handler - %d\n", + status); + return -ENODEV; + } + + return 0; +} + +static void __exit eeepc_wmi_exit(void) +{ + wmi_remove_notify_handler(EEEPC_WMI_EVENT_GUID); + sparse_keymap_free(eeepc_wmi_input_dev); + input_unregister_device(eeepc_wmi_input_dev); +} + +module_init(eeepc_wmi_init); +module_exit(eeepc_wmi_exit);