From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1753888Ab1BVKgy (ORCPT ); Tue, 22 Feb 2011 05:36:54 -0500 Received: from adelie.canonical.com ([91.189.90.139]:51816 "EHLO adelie.canonical.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752818Ab1BVKgw (ORCPT ); Tue, 22 Feb 2011 05:36:52 -0500 Subject: Re: linux-next: build warnings after merge of the drivers-x86 tree From: Colin Ian King To: Stephen Rothwell Cc: Matthew Garrett , linux-next@vger.kernel.org, linux-kernel@vger.kernel.org In-Reply-To: <20110222161345.c23850ea.sfr@canb.auug.org.au> References: <20110222161345.c23850ea.sfr@canb.auug.org.au> Content-Type: multipart/mixed; boundary="=-KoA/Bec8VXktnXZxDI6m" Date: Tue, 22 Feb 2011 10:36:44 +0000 Message-ID: <1298371004.2624.7.camel@lenovo> Mime-Version: 1.0 X-Mailer: Evolution 2.30.3 Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org --=-KoA/Bec8VXktnXZxDI6m Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: 7bit Apologies, My fail. Attached is correct version. On Tue, 2011-02-22 at 16:13 +1100, Stephen Rothwell wrote: > Hi Matthew, > > After merging the drivers-x86 tree, today's linux-next build (x86_64 > allmodconfig) produced these warning: > > drivers/platform/x86/dell-wmi-aio.c:29:1: warning: "pr_fmt" redefined > In file included from include/linux/kernel.h:20, > from drivers/platform/x86/dell-wmi-aio.c:19: > include/linux/printk.h:145:1: warning: this is the location of the previous definition > drivers/platform/x86/dell-wmi-aio.c: In function 'dell_wmi_aio_find': > drivers/platform/x86/dell-wmi-aio.c:130: warning: return discards qualifiers from pointer target type > > Caused by commit 2ef3d3fdc94c0ef481c60b7958785f05a0faf2ec ("Enable Dell > All-In-One volume up/down keys"). > --=-KoA/Bec8VXktnXZxDI6m Content-Disposition: attachment; filename="0001-Enable-Dell-All-In-One-volume-up-down-keys.patch" Content-Type: text/x-patch; name="0001-Enable-Dell-All-In-One-volume-up-down-keys.patch"; charset="UTF-8" Content-Transfer-Encoding: 7bit >>From ec236d3da33c28a458bbbccb4520245d08ba23c4 Mon Sep 17 00:00:00 2001 From: Colin Ian King Date: Tue, 22 Feb 2011 10:21:20 +0000 Subject: [PATCH] Enable Dell All-In-One volume up/down keys Enable volume up and down hotkeys on WMI events GUID 284A0E6B-380E-472A-921F-E52786257FB4 and GUID 02314822-307C-4F66-bf0E-48AEAEB26CC8. Also works around a firmware bug where the _WED method should return an integer containing the key code and in fact the method returns the key code in element zero of a buffer. BugLink: http://bugs.launchpad.net/bugs/701530 BugLink: http://bugs.launchpad.net/bugs/676997 Signed-off-by: Colin Ian King --- drivers/platform/x86/Kconfig | 13 +++ drivers/platform/x86/Makefile | 1 + drivers/platform/x86/dell-wmi-aio.c | 171 +++++++++++++++++++++++++++++++++++ 3 files changed, 185 insertions(+), 0 deletions(-) create mode 100644 drivers/platform/x86/dell-wmi-aio.c diff --git a/drivers/platform/x86/Kconfig b/drivers/platform/x86/Kconfig index a59af5b..498eee5 100644 --- a/drivers/platform/x86/Kconfig +++ b/drivers/platform/x86/Kconfig @@ -101,6 +101,19 @@ config DELL_WMI To compile this driver as a module, choose M here: the module will be called dell-wmi. +config DELL_WMI_AIO + tristate "WMI Hotkeys for Dell All-In-One series" + depends on ACPI_WMI + depends on INPUT + select INPUT_SPARSEKMAP + ---help--- + Say Y here if you want to support WMI-based hotkeys on Dell + All-In-One machines. + + To compile this driver as a module, choose M here: the module will + be called dell-wmi. + + config FUJITSU_LAPTOP tristate "Fujitsu Laptop Extras" depends on ACPI diff --git a/drivers/platform/x86/Makefile b/drivers/platform/x86/Makefile index 4ec4ff8..26c6a57 100644 --- a/drivers/platform/x86/Makefile +++ b/drivers/platform/x86/Makefile @@ -10,6 +10,7 @@ obj-$(CONFIG_ACPI_CMPC) += classmate-laptop.o obj-$(CONFIG_COMPAL_LAPTOP) += compal-laptop.o obj-$(CONFIG_DELL_LAPTOP) += dell-laptop.o obj-$(CONFIG_DELL_WMI) += dell-wmi.o +obj-$(CONFIG_DELL_WMI_AIO) += dell-wmi-aio.o obj-$(CONFIG_ACER_WMI) += acer-wmi.o obj-$(CONFIG_ACERHDF) += acerhdf.o obj-$(CONFIG_HP_WMI) += hp-wmi.o diff --git a/drivers/platform/x86/dell-wmi-aio.c b/drivers/platform/x86/dell-wmi-aio.c new file mode 100644 index 0000000..0ed8457 --- /dev/null +++ b/drivers/platform/x86/dell-wmi-aio.c @@ -0,0 +1,171 @@ +/* + * WMI hotkeys support for Dell All-In-One series + * + * 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 + */ +#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt + +#include +#include +#include +#include +#include +#include +#include +#include +#include + +MODULE_DESCRIPTION("WMI hotkeys driver for Dell All-In-One series"); +MODULE_LICENSE("GPL"); + +#define EVENT_GUID1 "284A0E6B-380E-472A-921F-E52786257FB4" +#define EVENT_GUID2 "02314822-307C-4F66-BF0E-48AEAEB26CC8" + +static const char *dell_wmi_aio_guids[] = { + EVENT_GUID1, + EVENT_GUID2, + NULL +}; + +MODULE_ALIAS("wmi:"EVENT_GUID1); +MODULE_ALIAS("wmi:"EVENT_GUID2); + +static const struct key_entry dell_wmi_aio_keymap[] = { + { KE_KEY, 0xc0, { KEY_VOLUMEUP } }, + { KE_KEY, 0xc1, { KEY_VOLUMEDOWN } }, + { KE_END, 0 } +}; + +static struct input_dev *dell_wmi_aio_input_dev; + +static void dell_wmi_aio_notify(u32 value, void *context) +{ + struct acpi_buffer response = { ACPI_ALLOCATE_BUFFER, NULL }; + union acpi_object *obj; + acpi_status status; + + status = wmi_get_event_data(value, &response); + if (status != AE_OK) { + pr_info("bad event status 0x%x\n", status); + return; + } + + obj = (union acpi_object *)response.pointer; + if (obj) { + unsigned int scancode; + + switch (obj->type) { + case ACPI_TYPE_INTEGER: + /* Most All-In-One correctly return integer scancode */ + scancode = obj->integer.value; + sparse_keymap_report_event(dell_wmi_aio_input_dev, + scancode, 1, true); + break; + case ACPI_TYPE_BUFFER: + /* Broken machines return the scancode in a buffer */ + if (obj->buffer.pointer && obj->buffer.length > 0) { + scancode = obj->buffer.pointer[0]; + sparse_keymap_report_event( + dell_wmi_aio_input_dev, + scancode, 1, true); + } + break; + } + } + kfree(obj); +} + +static int __init dell_wmi_aio_input_setup(void) +{ + int err; + + dell_wmi_aio_input_dev = input_allocate_device(); + + if (!dell_wmi_aio_input_dev) + return -ENOMEM; + + dell_wmi_aio_input_dev->name = "Dell AIO WMI hotkeys"; + dell_wmi_aio_input_dev->phys = "wmi/input0"; + dell_wmi_aio_input_dev->id.bustype = BUS_HOST; + + err = sparse_keymap_setup(dell_wmi_aio_input_dev, + dell_wmi_aio_keymap, NULL); + if (err) { + pr_err("Unable to setup input device keymap\n"); + goto err_free_dev; + } + err = input_register_device(dell_wmi_aio_input_dev); + if (err) { + pr_info("Unable to register input device\n"); + goto err_free_keymap; + } + return 0; + +err_free_keymap: + sparse_keymap_free(dell_wmi_aio_input_dev); +err_free_dev: + input_free_device(dell_wmi_aio_input_dev); + return err; +} + +static const char *dell_wmi_aio_find(void) +{ + int i; + + for (i = 0; dell_wmi_aio_guids[i] != NULL; i++) + if (wmi_has_guid(dell_wmi_aio_guids[i])) + return dell_wmi_aio_guids[i]; + + return NULL; +} + +static int __init dell_wmi_aio_init(void) +{ + int err; + const char *guid; + + guid = dell_wmi_aio_find(); + if (!guid) { + pr_warning("No known WMI GUID found\n"); + return -ENXIO; + } + + err = dell_wmi_aio_input_setup(); + if (err) + return err; + + err = wmi_install_notify_handler(guid, dell_wmi_aio_notify, NULL); + if (err) { + pr_err("Unable to register notify handler - %d\n", err); + sparse_keymap_free(dell_wmi_aio_input_dev); + input_unregister_device(dell_wmi_aio_input_dev); + return err; + } + + return 0; +} + +static void __exit dell_wmi_aio_exit(void) +{ + const char *guid; + + guid = dell_wmi_aio_find(); + wmi_remove_notify_handler(guid); + sparse_keymap_free(dell_wmi_aio_input_dev); + input_unregister_device(dell_wmi_aio_input_dev); +} + +module_init(dell_wmi_aio_init); +module_exit(dell_wmi_aio_exit); -- 1.7.2.3 --=-KoA/Bec8VXktnXZxDI6m--