![Carlos Corbacho](/assets/img/avatar_default.png)
It doesn't make much sense these days. Signed-off-by: Carlos Corbacho <carlos@strangeworlds.co.uk> Signed-off-by: Len Brown <len.brown@intel.com> Signed-off-by: Andi Kleen <ak@linux.intel.com>
1260 lines
28 KiB
C
1260 lines
28 KiB
C
/*
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* Acer WMI Laptop Extras
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*
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* Copyright (C) 2007-2008 Carlos Corbacho <carlos@strangeworlds.co.uk>
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*
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* Based on acer_acpi:
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* Copyright (C) 2005-2007 E.M. Smith
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* Copyright (C) 2007-2008 Carlos Corbacho <cathectic@gmail.com>
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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*/
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#include <linux/kernel.h>
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#include <linux/module.h>
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#include <linux/init.h>
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#include <linux/types.h>
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#include <linux/dmi.h>
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#include <linux/fb.h>
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#include <linux/backlight.h>
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#include <linux/leds.h>
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#include <linux/platform_device.h>
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#include <linux/acpi.h>
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#include <linux/i8042.h>
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#include <linux/debugfs.h>
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#include <acpi/acpi_drivers.h>
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MODULE_AUTHOR("Carlos Corbacho");
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MODULE_DESCRIPTION("Acer Laptop WMI Extras Driver");
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MODULE_LICENSE("GPL");
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#define ACER_LOGPREFIX "acer-wmi: "
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#define ACER_ERR KERN_ERR ACER_LOGPREFIX
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#define ACER_NOTICE KERN_NOTICE ACER_LOGPREFIX
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#define ACER_INFO KERN_INFO ACER_LOGPREFIX
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/*
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* The following defines quirks to get some specific functions to work
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* which are known to not be supported over ACPI-WMI (such as the mail LED
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* on WMID based Acer's)
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*/
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struct acer_quirks {
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const char *vendor;
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const char *model;
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u16 quirks;
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};
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/*
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* Magic Number
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* Meaning is unknown - this number is required for writing to ACPI for AMW0
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* (it's also used in acerhk when directly accessing the BIOS)
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*/
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#define ACER_AMW0_WRITE 0x9610
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/*
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* Bit masks for the AMW0 interface
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*/
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#define ACER_AMW0_WIRELESS_MASK 0x35
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#define ACER_AMW0_BLUETOOTH_MASK 0x34
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#define ACER_AMW0_MAILLED_MASK 0x31
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/*
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* Method IDs for WMID interface
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*/
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#define ACER_WMID_GET_WIRELESS_METHODID 1
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#define ACER_WMID_GET_BLUETOOTH_METHODID 2
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#define ACER_WMID_GET_BRIGHTNESS_METHODID 3
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#define ACER_WMID_SET_WIRELESS_METHODID 4
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#define ACER_WMID_SET_BLUETOOTH_METHODID 5
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#define ACER_WMID_SET_BRIGHTNESS_METHODID 6
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#define ACER_WMID_GET_THREEG_METHODID 10
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#define ACER_WMID_SET_THREEG_METHODID 11
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/*
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* Acer ACPI method GUIDs
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*/
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#define AMW0_GUID1 "67C3371D-95A3-4C37-BB61-DD47B491DAAB"
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#define AMW0_GUID2 "431F16ED-0C2B-444C-B267-27DEB140CF9C"
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#define WMID_GUID1 "6AF4F258-B401-42fd-BE91-3D4AC2D7C0D3"
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#define WMID_GUID2 "95764E09-FB56-4e83-B31A-37761F60994A"
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MODULE_ALIAS("wmi:67C3371D-95A3-4C37-BB61-DD47B491DAAB");
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MODULE_ALIAS("wmi:6AF4F258-B401-42fd-BE91-3D4AC2D7C0D3");
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/* Temporary workaround until the WMI sysfs interface goes in */
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MODULE_ALIAS("dmi:*:*Acer*:*:");
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/*
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* Interface capability flags
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*/
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#define ACER_CAP_MAILLED (1<<0)
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#define ACER_CAP_WIRELESS (1<<1)
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#define ACER_CAP_BLUETOOTH (1<<2)
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#define ACER_CAP_BRIGHTNESS (1<<3)
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#define ACER_CAP_THREEG (1<<4)
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#define ACER_CAP_ANY (0xFFFFFFFF)
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/*
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* Interface type flags
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*/
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enum interface_flags {
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ACER_AMW0,
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ACER_AMW0_V2,
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ACER_WMID,
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};
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#define ACER_DEFAULT_WIRELESS 0
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#define ACER_DEFAULT_BLUETOOTH 0
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#define ACER_DEFAULT_MAILLED 0
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#define ACER_DEFAULT_THREEG 0
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static int max_brightness = 0xF;
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static int wireless = -1;
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static int bluetooth = -1;
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static int mailled = -1;
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static int brightness = -1;
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static int threeg = -1;
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static int force_series;
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module_param(mailled, int, 0444);
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module_param(wireless, int, 0444);
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module_param(bluetooth, int, 0444);
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module_param(brightness, int, 0444);
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module_param(threeg, int, 0444);
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module_param(force_series, int, 0444);
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MODULE_PARM_DESC(wireless, "Set initial state of Wireless hardware");
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MODULE_PARM_DESC(bluetooth, "Set initial state of Bluetooth hardware");
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MODULE_PARM_DESC(mailled, "Set initial state of Mail LED");
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MODULE_PARM_DESC(brightness, "Set initial LCD backlight brightness");
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MODULE_PARM_DESC(threeg, "Set initial state of 3G hardware");
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MODULE_PARM_DESC(force_series, "Force a different laptop series");
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struct acer_data {
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int mailled;
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int wireless;
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int bluetooth;
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int threeg;
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int brightness;
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};
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struct acer_debug {
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struct dentry *root;
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struct dentry *devices;
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u32 wmid_devices;
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};
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/* Each low-level interface must define at least some of the following */
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struct wmi_interface {
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/* The WMI device type */
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u32 type;
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/* The capabilities this interface provides */
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u32 capability;
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/* Private data for the current interface */
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struct acer_data data;
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/* debugfs entries associated with this interface */
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struct acer_debug debug;
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};
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/* The static interface pointer, points to the currently detected interface */
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static struct wmi_interface *interface;
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/*
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* Embedded Controller quirks
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* Some laptops require us to directly access the EC to either enable or query
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* features that are not available through WMI.
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*/
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struct quirk_entry {
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u8 wireless;
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u8 mailled;
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s8 brightness;
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u8 bluetooth;
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};
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static struct quirk_entry *quirks;
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static void set_quirks(void)
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{
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if (quirks->mailled)
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interface->capability |= ACER_CAP_MAILLED;
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if (quirks->brightness)
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interface->capability |= ACER_CAP_BRIGHTNESS;
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}
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static int dmi_matched(const struct dmi_system_id *dmi)
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{
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quirks = dmi->driver_data;
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return 0;
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}
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static struct quirk_entry quirk_unknown = {
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};
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static struct quirk_entry quirk_acer_aspire_1520 = {
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.brightness = -1,
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};
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static struct quirk_entry quirk_acer_travelmate_2490 = {
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.mailled = 1,
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};
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/* This AMW0 laptop has no bluetooth */
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static struct quirk_entry quirk_medion_md_98300 = {
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.wireless = 1,
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};
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static struct quirk_entry quirk_fujitsu_amilo_li_1718 = {
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.wireless = 2,
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};
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static struct dmi_system_id acer_quirks[] = {
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{
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.callback = dmi_matched,
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.ident = "Acer Aspire 1360",
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.matches = {
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DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
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DMI_MATCH(DMI_PRODUCT_NAME, "Aspire 1360"),
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},
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.driver_data = &quirk_acer_aspire_1520,
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},
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{
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.callback = dmi_matched,
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.ident = "Acer Aspire 1520",
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.matches = {
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DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
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DMI_MATCH(DMI_PRODUCT_NAME, "Aspire 1520"),
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},
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.driver_data = &quirk_acer_aspire_1520,
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},
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{
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.callback = dmi_matched,
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.ident = "Acer Aspire 3100",
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.matches = {
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DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
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DMI_MATCH(DMI_PRODUCT_NAME, "Aspire 3100"),
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},
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.driver_data = &quirk_acer_travelmate_2490,
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},
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{
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.callback = dmi_matched,
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.ident = "Acer Aspire 3610",
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.matches = {
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DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
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DMI_MATCH(DMI_PRODUCT_NAME, "Aspire 3610"),
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},
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.driver_data = &quirk_acer_travelmate_2490,
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},
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{
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.callback = dmi_matched,
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.ident = "Acer Aspire 5100",
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.matches = {
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DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
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DMI_MATCH(DMI_PRODUCT_NAME, "Aspire 5100"),
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},
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.driver_data = &quirk_acer_travelmate_2490,
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},
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{
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.callback = dmi_matched,
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.ident = "Acer Aspire 5610",
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.matches = {
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DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
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DMI_MATCH(DMI_PRODUCT_NAME, "Aspire 5610"),
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},
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.driver_data = &quirk_acer_travelmate_2490,
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},
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{
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.callback = dmi_matched,
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.ident = "Acer Aspire 5630",
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.matches = {
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DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
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DMI_MATCH(DMI_PRODUCT_NAME, "Aspire 5630"),
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},
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.driver_data = &quirk_acer_travelmate_2490,
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},
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{
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.callback = dmi_matched,
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.ident = "Acer Aspire 5650",
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.matches = {
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DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
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DMI_MATCH(DMI_PRODUCT_NAME, "Aspire 5650"),
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},
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.driver_data = &quirk_acer_travelmate_2490,
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},
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{
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.callback = dmi_matched,
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.ident = "Acer Aspire 5680",
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.matches = {
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DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
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DMI_MATCH(DMI_PRODUCT_NAME, "Aspire 5680"),
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},
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.driver_data = &quirk_acer_travelmate_2490,
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},
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{
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.callback = dmi_matched,
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.ident = "Acer Aspire 9110",
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.matches = {
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DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
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DMI_MATCH(DMI_PRODUCT_NAME, "Aspire 9110"),
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},
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.driver_data = &quirk_acer_travelmate_2490,
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},
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{
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.callback = dmi_matched,
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.ident = "Acer TravelMate 2490",
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.matches = {
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DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
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DMI_MATCH(DMI_PRODUCT_NAME, "TravelMate 2490"),
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},
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.driver_data = &quirk_acer_travelmate_2490,
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},
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{
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.callback = dmi_matched,
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.ident = "Acer TravelMate 4200",
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.matches = {
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DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
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DMI_MATCH(DMI_PRODUCT_NAME, "TravelMate 4200"),
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},
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.driver_data = &quirk_acer_travelmate_2490,
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},
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{
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.callback = dmi_matched,
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.ident = "Fujitsu Siemens Amilo Li 1718",
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.matches = {
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DMI_MATCH(DMI_SYS_VENDOR, "FUJITSU SIEMENS"),
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DMI_MATCH(DMI_PRODUCT_NAME, "AMILO Li 1718"),
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},
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.driver_data = &quirk_fujitsu_amilo_li_1718,
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},
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{
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.callback = dmi_matched,
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.ident = "Medion MD 98300",
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.matches = {
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DMI_MATCH(DMI_SYS_VENDOR, "MEDION"),
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DMI_MATCH(DMI_PRODUCT_NAME, "WAM2030"),
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},
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.driver_data = &quirk_medion_md_98300,
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},
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{}
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};
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/* Find which quirks are needed for a particular vendor/ model pair */
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static void find_quirks(void)
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{
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if (!force_series) {
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dmi_check_system(acer_quirks);
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} else if (force_series == 2490) {
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quirks = &quirk_acer_travelmate_2490;
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}
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if (quirks == NULL)
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quirks = &quirk_unknown;
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set_quirks();
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}
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/*
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* General interface convenience methods
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*/
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static bool has_cap(u32 cap)
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{
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if ((interface->capability & cap) != 0)
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return 1;
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return 0;
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}
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/*
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* AMW0 (V1) interface
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*/
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struct wmab_args {
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u32 eax;
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u32 ebx;
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u32 ecx;
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u32 edx;
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};
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struct wmab_ret {
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u32 eax;
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u32 ebx;
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u32 ecx;
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u32 edx;
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u32 eex;
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};
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static acpi_status wmab_execute(struct wmab_args *regbuf,
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struct acpi_buffer *result)
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{
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struct acpi_buffer input;
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acpi_status status;
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input.length = sizeof(struct wmab_args);
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input.pointer = (u8 *)regbuf;
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status = wmi_evaluate_method(AMW0_GUID1, 1, 1, &input, result);
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return status;
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}
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static acpi_status AMW0_get_u32(u32 *value, u32 cap,
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struct wmi_interface *iface)
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{
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int err;
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u8 result;
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switch (cap) {
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case ACER_CAP_MAILLED:
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switch (quirks->mailled) {
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default:
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err = ec_read(0xA, &result);
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if (err)
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return AE_ERROR;
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*value = (result >> 7) & 0x1;
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return AE_OK;
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}
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break;
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case ACER_CAP_WIRELESS:
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switch (quirks->wireless) {
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case 1:
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err = ec_read(0x7B, &result);
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if (err)
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return AE_ERROR;
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*value = result & 0x1;
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return AE_OK;
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case 2:
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err = ec_read(0x71, &result);
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if (err)
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return AE_ERROR;
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*value = result & 0x1;
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return AE_OK;
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default:
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err = ec_read(0xA, &result);
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if (err)
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return AE_ERROR;
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*value = (result >> 2) & 0x1;
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return AE_OK;
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}
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break;
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case ACER_CAP_BLUETOOTH:
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switch (quirks->bluetooth) {
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default:
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err = ec_read(0xA, &result);
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if (err)
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return AE_ERROR;
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*value = (result >> 4) & 0x1;
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return AE_OK;
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}
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break;
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case ACER_CAP_BRIGHTNESS:
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switch (quirks->brightness) {
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default:
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err = ec_read(0x83, &result);
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if (err)
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return AE_ERROR;
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*value = result;
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return AE_OK;
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}
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break;
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default:
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return AE_BAD_ADDRESS;
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}
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return AE_OK;
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}
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static acpi_status AMW0_set_u32(u32 value, u32 cap, struct wmi_interface *iface)
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{
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struct wmab_args args;
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args.eax = ACER_AMW0_WRITE;
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args.ebx = value ? (1<<8) : 0;
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args.ecx = args.edx = 0;
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switch (cap) {
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case ACER_CAP_MAILLED:
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if (value > 1)
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return AE_BAD_PARAMETER;
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args.ebx |= ACER_AMW0_MAILLED_MASK;
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break;
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case ACER_CAP_WIRELESS:
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if (value > 1)
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return AE_BAD_PARAMETER;
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args.ebx |= ACER_AMW0_WIRELESS_MASK;
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break;
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case ACER_CAP_BLUETOOTH:
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if (value > 1)
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return AE_BAD_PARAMETER;
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args.ebx |= ACER_AMW0_BLUETOOTH_MASK;
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break;
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case ACER_CAP_BRIGHTNESS:
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if (value > max_brightness)
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return AE_BAD_PARAMETER;
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switch (quirks->brightness) {
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default:
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return ec_write(0x83, value);
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break;
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}
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default:
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return AE_BAD_ADDRESS;
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}
|
|
|
|
/* Actually do the set */
|
|
return wmab_execute(&args, NULL);
|
|
}
|
|
|
|
static acpi_status AMW0_find_mailled(void)
|
|
{
|
|
struct wmab_args args;
|
|
struct wmab_ret ret;
|
|
acpi_status status = AE_OK;
|
|
struct acpi_buffer out = { ACPI_ALLOCATE_BUFFER, NULL };
|
|
union acpi_object *obj;
|
|
|
|
args.eax = 0x86;
|
|
args.ebx = args.ecx = args.edx = 0;
|
|
|
|
status = wmab_execute(&args, &out);
|
|
if (ACPI_FAILURE(status))
|
|
return status;
|
|
|
|
obj = (union acpi_object *) out.pointer;
|
|
if (obj && obj->type == ACPI_TYPE_BUFFER &&
|
|
obj->buffer.length == sizeof(struct wmab_ret)) {
|
|
ret = *((struct wmab_ret *) obj->buffer.pointer);
|
|
} else {
|
|
return AE_ERROR;
|
|
}
|
|
|
|
if (ret.eex & 0x1)
|
|
interface->capability |= ACER_CAP_MAILLED;
|
|
|
|
kfree(out.pointer);
|
|
|
|
return AE_OK;
|
|
}
|
|
|
|
static acpi_status AMW0_set_capabilities(void)
|
|
{
|
|
struct wmab_args args;
|
|
struct wmab_ret ret;
|
|
acpi_status status = AE_OK;
|
|
struct acpi_buffer out = { ACPI_ALLOCATE_BUFFER, NULL };
|
|
union acpi_object *obj;
|
|
|
|
/*
|
|
* On laptops with this strange GUID (non Acer), normal probing doesn't
|
|
* work.
|
|
*/
|
|
if (wmi_has_guid(AMW0_GUID2)) {
|
|
interface->capability |= ACER_CAP_WIRELESS;
|
|
return AE_OK;
|
|
}
|
|
|
|
args.eax = ACER_AMW0_WRITE;
|
|
args.ecx = args.edx = 0;
|
|
|
|
args.ebx = 0xa2 << 8;
|
|
args.ebx |= ACER_AMW0_WIRELESS_MASK;
|
|
|
|
status = wmab_execute(&args, &out);
|
|
if (ACPI_FAILURE(status))
|
|
return status;
|
|
|
|
obj = (union acpi_object *) out.pointer;
|
|
if (obj && obj->type == ACPI_TYPE_BUFFER &&
|
|
obj->buffer.length == sizeof(struct wmab_ret)) {
|
|
ret = *((struct wmab_ret *) obj->buffer.pointer);
|
|
} else {
|
|
return AE_ERROR;
|
|
}
|
|
|
|
if (ret.eax & 0x1)
|
|
interface->capability |= ACER_CAP_WIRELESS;
|
|
|
|
args.ebx = 2 << 8;
|
|
args.ebx |= ACER_AMW0_BLUETOOTH_MASK;
|
|
|
|
status = wmab_execute(&args, &out);
|
|
if (ACPI_FAILURE(status))
|
|
return status;
|
|
|
|
obj = (union acpi_object *) out.pointer;
|
|
if (obj && obj->type == ACPI_TYPE_BUFFER
|
|
&& obj->buffer.length == sizeof(struct wmab_ret)) {
|
|
ret = *((struct wmab_ret *) obj->buffer.pointer);
|
|
} else {
|
|
return AE_ERROR;
|
|
}
|
|
|
|
if (ret.eax & 0x1)
|
|
interface->capability |= ACER_CAP_BLUETOOTH;
|
|
|
|
kfree(out.pointer);
|
|
|
|
/*
|
|
* This appears to be safe to enable, since all Wistron based laptops
|
|
* appear to use the same EC register for brightness, even if they
|
|
* differ for wireless, etc
|
|
*/
|
|
if (quirks->brightness >= 0)
|
|
interface->capability |= ACER_CAP_BRIGHTNESS;
|
|
|
|
return AE_OK;
|
|
}
|
|
|
|
static struct wmi_interface AMW0_interface = {
|
|
.type = ACER_AMW0,
|
|
};
|
|
|
|
static struct wmi_interface AMW0_V2_interface = {
|
|
.type = ACER_AMW0_V2,
|
|
};
|
|
|
|
/*
|
|
* New interface (The WMID interface)
|
|
*/
|
|
static acpi_status
|
|
WMI_execute_u32(u32 method_id, u32 in, u32 *out)
|
|
{
|
|
struct acpi_buffer input = { (acpi_size) sizeof(u32), (void *)(&in) };
|
|
struct acpi_buffer result = { ACPI_ALLOCATE_BUFFER, NULL };
|
|
union acpi_object *obj;
|
|
u32 tmp;
|
|
acpi_status status;
|
|
|
|
status = wmi_evaluate_method(WMID_GUID1, 1, method_id, &input, &result);
|
|
|
|
if (ACPI_FAILURE(status))
|
|
return status;
|
|
|
|
obj = (union acpi_object *) result.pointer;
|
|
if (obj && obj->type == ACPI_TYPE_BUFFER &&
|
|
obj->buffer.length == sizeof(u32)) {
|
|
tmp = *((u32 *) obj->buffer.pointer);
|
|
} else {
|
|
tmp = 0;
|
|
}
|
|
|
|
if (out)
|
|
*out = tmp;
|
|
|
|
kfree(result.pointer);
|
|
|
|
return status;
|
|
}
|
|
|
|
static acpi_status WMID_get_u32(u32 *value, u32 cap,
|
|
struct wmi_interface *iface)
|
|
{
|
|
acpi_status status;
|
|
u8 tmp;
|
|
u32 result, method_id = 0;
|
|
|
|
switch (cap) {
|
|
case ACER_CAP_WIRELESS:
|
|
method_id = ACER_WMID_GET_WIRELESS_METHODID;
|
|
break;
|
|
case ACER_CAP_BLUETOOTH:
|
|
method_id = ACER_WMID_GET_BLUETOOTH_METHODID;
|
|
break;
|
|
case ACER_CAP_BRIGHTNESS:
|
|
method_id = ACER_WMID_GET_BRIGHTNESS_METHODID;
|
|
break;
|
|
case ACER_CAP_THREEG:
|
|
method_id = ACER_WMID_GET_THREEG_METHODID;
|
|
break;
|
|
case ACER_CAP_MAILLED:
|
|
if (quirks->mailled == 1) {
|
|
ec_read(0x9f, &tmp);
|
|
*value = tmp & 0x1;
|
|
return 0;
|
|
}
|
|
default:
|
|
return AE_BAD_ADDRESS;
|
|
}
|
|
status = WMI_execute_u32(method_id, 0, &result);
|
|
|
|
if (ACPI_SUCCESS(status))
|
|
*value = (u8)result;
|
|
|
|
return status;
|
|
}
|
|
|
|
static acpi_status WMID_set_u32(u32 value, u32 cap, struct wmi_interface *iface)
|
|
{
|
|
u32 method_id = 0;
|
|
char param;
|
|
|
|
switch (cap) {
|
|
case ACER_CAP_BRIGHTNESS:
|
|
if (value > max_brightness)
|
|
return AE_BAD_PARAMETER;
|
|
method_id = ACER_WMID_SET_BRIGHTNESS_METHODID;
|
|
break;
|
|
case ACER_CAP_WIRELESS:
|
|
if (value > 1)
|
|
return AE_BAD_PARAMETER;
|
|
method_id = ACER_WMID_SET_WIRELESS_METHODID;
|
|
break;
|
|
case ACER_CAP_BLUETOOTH:
|
|
if (value > 1)
|
|
return AE_BAD_PARAMETER;
|
|
method_id = ACER_WMID_SET_BLUETOOTH_METHODID;
|
|
break;
|
|
case ACER_CAP_THREEG:
|
|
if (value > 1)
|
|
return AE_BAD_PARAMETER;
|
|
method_id = ACER_WMID_SET_THREEG_METHODID;
|
|
break;
|
|
case ACER_CAP_MAILLED:
|
|
if (value > 1)
|
|
return AE_BAD_PARAMETER;
|
|
if (quirks->mailled == 1) {
|
|
param = value ? 0x92 : 0x93;
|
|
i8042_command(¶m, 0x1059);
|
|
return 0;
|
|
}
|
|
break;
|
|
default:
|
|
return AE_BAD_ADDRESS;
|
|
}
|
|
return WMI_execute_u32(method_id, (u32)value, NULL);
|
|
}
|
|
|
|
static acpi_status WMID_set_capabilities(void)
|
|
{
|
|
struct acpi_buffer out = {ACPI_ALLOCATE_BUFFER, NULL};
|
|
union acpi_object *obj;
|
|
acpi_status status;
|
|
u32 devices;
|
|
|
|
status = wmi_query_block(WMID_GUID2, 1, &out);
|
|
if (ACPI_FAILURE(status))
|
|
return status;
|
|
|
|
obj = (union acpi_object *) out.pointer;
|
|
if (obj && obj->type == ACPI_TYPE_BUFFER &&
|
|
obj->buffer.length == sizeof(u32)) {
|
|
devices = *((u32 *) obj->buffer.pointer);
|
|
} else {
|
|
return AE_ERROR;
|
|
}
|
|
|
|
/* Not sure on the meaning of the relevant bits yet to detect these */
|
|
interface->capability |= ACER_CAP_WIRELESS;
|
|
interface->capability |= ACER_CAP_THREEG;
|
|
|
|
/* WMID always provides brightness methods */
|
|
interface->capability |= ACER_CAP_BRIGHTNESS;
|
|
|
|
if (devices & 0x10)
|
|
interface->capability |= ACER_CAP_BLUETOOTH;
|
|
|
|
if (!(devices & 0x20))
|
|
max_brightness = 0x9;
|
|
|
|
return status;
|
|
}
|
|
|
|
static struct wmi_interface wmid_interface = {
|
|
.type = ACER_WMID,
|
|
};
|
|
|
|
/*
|
|
* Generic Device (interface-independent)
|
|
*/
|
|
|
|
static acpi_status get_u32(u32 *value, u32 cap)
|
|
{
|
|
acpi_status status = AE_BAD_ADDRESS;
|
|
|
|
switch (interface->type) {
|
|
case ACER_AMW0:
|
|
status = AMW0_get_u32(value, cap, interface);
|
|
break;
|
|
case ACER_AMW0_V2:
|
|
if (cap == ACER_CAP_MAILLED) {
|
|
status = AMW0_get_u32(value, cap, interface);
|
|
break;
|
|
}
|
|
case ACER_WMID:
|
|
status = WMID_get_u32(value, cap, interface);
|
|
break;
|
|
}
|
|
|
|
return status;
|
|
}
|
|
|
|
static acpi_status set_u32(u32 value, u32 cap)
|
|
{
|
|
if (interface->capability & cap) {
|
|
switch (interface->type) {
|
|
case ACER_AMW0:
|
|
return AMW0_set_u32(value, cap, interface);
|
|
case ACER_AMW0_V2:
|
|
case ACER_WMID:
|
|
return WMID_set_u32(value, cap, interface);
|
|
default:
|
|
return AE_BAD_PARAMETER;
|
|
}
|
|
}
|
|
return AE_BAD_PARAMETER;
|
|
}
|
|
|
|
static void __init acer_commandline_init(void)
|
|
{
|
|
/*
|
|
* These will all fail silently if the value given is invalid, or the
|
|
* capability isn't available on the given interface
|
|
*/
|
|
set_u32(mailled, ACER_CAP_MAILLED);
|
|
set_u32(wireless, ACER_CAP_WIRELESS);
|
|
set_u32(bluetooth, ACER_CAP_BLUETOOTH);
|
|
set_u32(threeg, ACER_CAP_THREEG);
|
|
set_u32(brightness, ACER_CAP_BRIGHTNESS);
|
|
}
|
|
|
|
/*
|
|
* LED device (Mail LED only, no other LEDs known yet)
|
|
*/
|
|
static void mail_led_set(struct led_classdev *led_cdev,
|
|
enum led_brightness value)
|
|
{
|
|
set_u32(value, ACER_CAP_MAILLED);
|
|
}
|
|
|
|
static struct led_classdev mail_led = {
|
|
.name = "acer-wmi::mail",
|
|
.brightness_set = mail_led_set,
|
|
};
|
|
|
|
static int __devinit acer_led_init(struct device *dev)
|
|
{
|
|
return led_classdev_register(dev, &mail_led);
|
|
}
|
|
|
|
static void acer_led_exit(void)
|
|
{
|
|
led_classdev_unregister(&mail_led);
|
|
}
|
|
|
|
/*
|
|
* Backlight device
|
|
*/
|
|
static struct backlight_device *acer_backlight_device;
|
|
|
|
static int read_brightness(struct backlight_device *bd)
|
|
{
|
|
u32 value;
|
|
get_u32(&value, ACER_CAP_BRIGHTNESS);
|
|
return value;
|
|
}
|
|
|
|
static int update_bl_status(struct backlight_device *bd)
|
|
{
|
|
int intensity = bd->props.brightness;
|
|
|
|
if (bd->props.power != FB_BLANK_UNBLANK)
|
|
intensity = 0;
|
|
if (bd->props.fb_blank != FB_BLANK_UNBLANK)
|
|
intensity = 0;
|
|
|
|
set_u32(intensity, ACER_CAP_BRIGHTNESS);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static struct backlight_ops acer_bl_ops = {
|
|
.get_brightness = read_brightness,
|
|
.update_status = update_bl_status,
|
|
};
|
|
|
|
static int __devinit acer_backlight_init(struct device *dev)
|
|
{
|
|
struct backlight_device *bd;
|
|
|
|
bd = backlight_device_register("acer-wmi", dev, NULL, &acer_bl_ops);
|
|
if (IS_ERR(bd)) {
|
|
printk(ACER_ERR "Could not register Acer backlight device\n");
|
|
acer_backlight_device = NULL;
|
|
return PTR_ERR(bd);
|
|
}
|
|
|
|
acer_backlight_device = bd;
|
|
|
|
bd->props.power = FB_BLANK_UNBLANK;
|
|
bd->props.brightness = max_brightness;
|
|
bd->props.max_brightness = max_brightness;
|
|
backlight_update_status(bd);
|
|
return 0;
|
|
}
|
|
|
|
static void acer_backlight_exit(void)
|
|
{
|
|
backlight_device_unregister(acer_backlight_device);
|
|
}
|
|
|
|
/*
|
|
* Read/ write bool sysfs macro
|
|
*/
|
|
#define show_set_bool(value, cap) \
|
|
static ssize_t \
|
|
show_bool_##value(struct device *dev, struct device_attribute *attr, \
|
|
char *buf) \
|
|
{ \
|
|
u32 result; \
|
|
acpi_status status = get_u32(&result, cap); \
|
|
if (ACPI_SUCCESS(status)) \
|
|
return sprintf(buf, "%u\n", result); \
|
|
return sprintf(buf, "Read error\n"); \
|
|
} \
|
|
\
|
|
static ssize_t \
|
|
set_bool_##value(struct device *dev, struct device_attribute *attr, \
|
|
const char *buf, size_t count) \
|
|
{ \
|
|
u32 tmp = simple_strtoul(buf, NULL, 10); \
|
|
acpi_status status = set_u32(tmp, cap); \
|
|
if (ACPI_FAILURE(status)) \
|
|
return -EINVAL; \
|
|
return count; \
|
|
} \
|
|
static DEVICE_ATTR(value, S_IWUGO | S_IRUGO | S_IWUSR, \
|
|
show_bool_##value, set_bool_##value);
|
|
|
|
show_set_bool(wireless, ACER_CAP_WIRELESS);
|
|
show_set_bool(bluetooth, ACER_CAP_BLUETOOTH);
|
|
show_set_bool(threeg, ACER_CAP_THREEG);
|
|
|
|
/*
|
|
* Read interface sysfs macro
|
|
*/
|
|
static ssize_t show_interface(struct device *dev, struct device_attribute *attr,
|
|
char *buf)
|
|
{
|
|
switch (interface->type) {
|
|
case ACER_AMW0:
|
|
return sprintf(buf, "AMW0\n");
|
|
case ACER_AMW0_V2:
|
|
return sprintf(buf, "AMW0 v2\n");
|
|
case ACER_WMID:
|
|
return sprintf(buf, "WMID\n");
|
|
default:
|
|
return sprintf(buf, "Error!\n");
|
|
}
|
|
}
|
|
|
|
static DEVICE_ATTR(interface, S_IWUGO | S_IRUGO | S_IWUSR,
|
|
show_interface, NULL);
|
|
|
|
/*
|
|
* debugfs functions
|
|
*/
|
|
static u32 get_wmid_devices(void)
|
|
{
|
|
struct acpi_buffer out = {ACPI_ALLOCATE_BUFFER, NULL};
|
|
union acpi_object *obj;
|
|
acpi_status status;
|
|
|
|
status = wmi_query_block(WMID_GUID2, 1, &out);
|
|
if (ACPI_FAILURE(status))
|
|
return 0;
|
|
|
|
obj = (union acpi_object *) out.pointer;
|
|
if (obj && obj->type == ACPI_TYPE_BUFFER &&
|
|
obj->buffer.length == sizeof(u32)) {
|
|
return *((u32 *) obj->buffer.pointer);
|
|
} else {
|
|
return 0;
|
|
}
|
|
}
|
|
|
|
/*
|
|
* Platform device
|
|
*/
|
|
static int __devinit acer_platform_probe(struct platform_device *device)
|
|
{
|
|
int err;
|
|
|
|
if (has_cap(ACER_CAP_MAILLED)) {
|
|
err = acer_led_init(&device->dev);
|
|
if (err)
|
|
goto error_mailled;
|
|
}
|
|
|
|
if (has_cap(ACER_CAP_BRIGHTNESS)) {
|
|
err = acer_backlight_init(&device->dev);
|
|
if (err)
|
|
goto error_brightness;
|
|
}
|
|
|
|
return 0;
|
|
|
|
error_brightness:
|
|
acer_led_exit();
|
|
error_mailled:
|
|
return err;
|
|
}
|
|
|
|
static int acer_platform_remove(struct platform_device *device)
|
|
{
|
|
if (has_cap(ACER_CAP_MAILLED))
|
|
acer_led_exit();
|
|
if (has_cap(ACER_CAP_BRIGHTNESS))
|
|
acer_backlight_exit();
|
|
return 0;
|
|
}
|
|
|
|
static int acer_platform_suspend(struct platform_device *dev,
|
|
pm_message_t state)
|
|
{
|
|
u32 value;
|
|
struct acer_data *data = &interface->data;
|
|
|
|
if (!data)
|
|
return -ENOMEM;
|
|
|
|
if (has_cap(ACER_CAP_WIRELESS)) {
|
|
get_u32(&value, ACER_CAP_WIRELESS);
|
|
data->wireless = value;
|
|
}
|
|
|
|
if (has_cap(ACER_CAP_BLUETOOTH)) {
|
|
get_u32(&value, ACER_CAP_BLUETOOTH);
|
|
data->bluetooth = value;
|
|
}
|
|
|
|
if (has_cap(ACER_CAP_MAILLED)) {
|
|
get_u32(&value, ACER_CAP_MAILLED);
|
|
data->mailled = value;
|
|
}
|
|
|
|
if (has_cap(ACER_CAP_BRIGHTNESS)) {
|
|
get_u32(&value, ACER_CAP_BRIGHTNESS);
|
|
data->brightness = value;
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int acer_platform_resume(struct platform_device *device)
|
|
{
|
|
struct acer_data *data = &interface->data;
|
|
|
|
if (!data)
|
|
return -ENOMEM;
|
|
|
|
if (has_cap(ACER_CAP_WIRELESS))
|
|
set_u32(data->wireless, ACER_CAP_WIRELESS);
|
|
|
|
if (has_cap(ACER_CAP_BLUETOOTH))
|
|
set_u32(data->bluetooth, ACER_CAP_BLUETOOTH);
|
|
|
|
if (has_cap(ACER_CAP_THREEG))
|
|
set_u32(data->threeg, ACER_CAP_THREEG);
|
|
|
|
if (has_cap(ACER_CAP_MAILLED))
|
|
set_u32(data->mailled, ACER_CAP_MAILLED);
|
|
|
|
if (has_cap(ACER_CAP_BRIGHTNESS))
|
|
set_u32(data->brightness, ACER_CAP_BRIGHTNESS);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static struct platform_driver acer_platform_driver = {
|
|
.driver = {
|
|
.name = "acer-wmi",
|
|
.owner = THIS_MODULE,
|
|
},
|
|
.probe = acer_platform_probe,
|
|
.remove = acer_platform_remove,
|
|
.suspend = acer_platform_suspend,
|
|
.resume = acer_platform_resume,
|
|
};
|
|
|
|
static struct platform_device *acer_platform_device;
|
|
|
|
static int remove_sysfs(struct platform_device *device)
|
|
{
|
|
if (has_cap(ACER_CAP_WIRELESS))
|
|
device_remove_file(&device->dev, &dev_attr_wireless);
|
|
|
|
if (has_cap(ACER_CAP_BLUETOOTH))
|
|
device_remove_file(&device->dev, &dev_attr_bluetooth);
|
|
|
|
if (has_cap(ACER_CAP_THREEG))
|
|
device_remove_file(&device->dev, &dev_attr_threeg);
|
|
|
|
device_remove_file(&device->dev, &dev_attr_interface);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int create_sysfs(void)
|
|
{
|
|
int retval = -ENOMEM;
|
|
|
|
if (has_cap(ACER_CAP_WIRELESS)) {
|
|
retval = device_create_file(&acer_platform_device->dev,
|
|
&dev_attr_wireless);
|
|
if (retval)
|
|
goto error_sysfs;
|
|
}
|
|
|
|
if (has_cap(ACER_CAP_BLUETOOTH)) {
|
|
retval = device_create_file(&acer_platform_device->dev,
|
|
&dev_attr_bluetooth);
|
|
if (retval)
|
|
goto error_sysfs;
|
|
}
|
|
|
|
if (has_cap(ACER_CAP_THREEG)) {
|
|
retval = device_create_file(&acer_platform_device->dev,
|
|
&dev_attr_threeg);
|
|
if (retval)
|
|
goto error_sysfs;
|
|
}
|
|
|
|
retval = device_create_file(&acer_platform_device->dev,
|
|
&dev_attr_interface);
|
|
if (retval)
|
|
goto error_sysfs;
|
|
|
|
return 0;
|
|
|
|
error_sysfs:
|
|
remove_sysfs(acer_platform_device);
|
|
return retval;
|
|
}
|
|
|
|
static void remove_debugfs(void)
|
|
{
|
|
debugfs_remove(interface->debug.devices);
|
|
debugfs_remove(interface->debug.root);
|
|
}
|
|
|
|
static int create_debugfs(void)
|
|
{
|
|
interface->debug.root = debugfs_create_dir("acer-wmi", NULL);
|
|
if (!interface->debug.root) {
|
|
printk(ACER_ERR "Failed to create debugfs directory");
|
|
return -ENOMEM;
|
|
}
|
|
|
|
interface->debug.devices = debugfs_create_u32("devices", S_IRUGO,
|
|
interface->debug.root,
|
|
&interface->debug.wmid_devices);
|
|
if (!interface->debug.devices)
|
|
goto error_debugfs;
|
|
|
|
return 0;
|
|
|
|
error_debugfs:
|
|
remove_debugfs();
|
|
return -ENOMEM;
|
|
}
|
|
|
|
static int __init acer_wmi_init(void)
|
|
{
|
|
int err;
|
|
|
|
printk(ACER_INFO "Acer Laptop ACPI-WMI Extras\n");
|
|
|
|
find_quirks();
|
|
|
|
/*
|
|
* Detect which ACPI-WMI interface we're using.
|
|
*/
|
|
if (wmi_has_guid(AMW0_GUID1) && wmi_has_guid(WMID_GUID1))
|
|
interface = &AMW0_V2_interface;
|
|
|
|
if (!wmi_has_guid(AMW0_GUID1) && wmi_has_guid(WMID_GUID1))
|
|
interface = &wmid_interface;
|
|
|
|
if (wmi_has_guid(WMID_GUID2) && interface) {
|
|
if (ACPI_FAILURE(WMID_set_capabilities())) {
|
|
printk(ACER_ERR "Unable to detect available WMID "
|
|
"devices\n");
|
|
return -ENODEV;
|
|
}
|
|
} else if (!wmi_has_guid(WMID_GUID2) && interface) {
|
|
printk(ACER_ERR "No WMID device detection method found\n");
|
|
return -ENODEV;
|
|
}
|
|
|
|
if (wmi_has_guid(AMW0_GUID1) && !wmi_has_guid(WMID_GUID1)) {
|
|
interface = &AMW0_interface;
|
|
|
|
if (ACPI_FAILURE(AMW0_set_capabilities())) {
|
|
printk(ACER_ERR "Unable to detect available AMW0 "
|
|
"devices\n");
|
|
return -ENODEV;
|
|
}
|
|
}
|
|
|
|
if (wmi_has_guid(AMW0_GUID1))
|
|
AMW0_find_mailled();
|
|
|
|
if (!interface) {
|
|
printk(ACER_ERR "No or unsupported WMI interface, unable to "
|
|
"load\n");
|
|
return -ENODEV;
|
|
}
|
|
|
|
if (platform_driver_register(&acer_platform_driver)) {
|
|
printk(ACER_ERR "Unable to register platform driver.\n");
|
|
goto error_platform_register;
|
|
}
|
|
acer_platform_device = platform_device_alloc("acer-wmi", -1);
|
|
platform_device_add(acer_platform_device);
|
|
|
|
err = create_sysfs();
|
|
if (err)
|
|
return err;
|
|
|
|
if (wmi_has_guid(WMID_GUID2)) {
|
|
interface->debug.wmid_devices = get_wmid_devices();
|
|
err = create_debugfs();
|
|
if (err)
|
|
return err;
|
|
}
|
|
|
|
/* Override any initial settings with values from the commandline */
|
|
acer_commandline_init();
|
|
|
|
return 0;
|
|
|
|
error_platform_register:
|
|
return -ENODEV;
|
|
}
|
|
|
|
static void __exit acer_wmi_exit(void)
|
|
{
|
|
remove_sysfs(acer_platform_device);
|
|
platform_device_del(acer_platform_device);
|
|
platform_driver_unregister(&acer_platform_driver);
|
|
|
|
printk(ACER_INFO "Acer Laptop WMI Extras unloaded\n");
|
|
return;
|
|
}
|
|
|
|
module_init(acer_wmi_init);
|
|
module_exit(acer_wmi_exit);
|