Skip to content

L
linux
Commit e5f49722 authored by Len Brown's avatar Len Brown Committed by Len Brown
Browse files
Options

[ACPI] create IBM ThinkPad ACPI driver -- ibm-acpi-0.6.patch 

by Borislav Deianov
Signed-off-by: default avatarLen Brown <len.brown@intel.com>
parent ecb18428
Hide whitespace changes
Inline Side-by-side
Showing with 1729 additions and 0 deletions
Documentation/ibm-acpi.txt 0 → 100644
View file @ e5f49722
IBM ThinkPad ACPI Extras Driver
Version 0.6
19 October 2004
Borislav Deianov <borislav@users.sf.net>
http://ibm-acpi.sf.net/
This is a Linux ACPI driver for the IBM ThinkPad laptops. It aims to
support various features of these laptops which are accessible through
the ACPI framework but not otherwise supported by the generic Linux
ACPI drivers.
Status
------
The features currently supported are the following (see below for
detailed description):
- Fn key combinations
- Bluetooth enable and disable
- video output switching, expansion control
- ThinkLight on and off
- limited docking and undocking
- UltraBay eject
- Experimental: CMOS control
- Experimental: LED control
- Experimental: ACPI sounds
A compatibility table by model and feature is maintained on the web
site, http://ibm-acpi.sf.net/. I appreciate any success or failure
reports, especially if they add to or correct the compatibility table.
Please include the following information in your report:
- ThinkPad model name
- a copy of your DSDT, from /proc/acpi/dsdt
- which driver features work and which don't
- the observed behavior of non-working features
Any other comments or patches are also more than welcome.
Installation
------------
If you are compiling this driver as included in the Linux kernel
sources, simply enable the CONFIG_ACPI_IBM option (Power Management /
ACPI / IBM ThinkPad Laptop Extras). The rest of this section describes
how to install this driver when downloaded from the web site.
First, you need to get a kernel with ACPI support up and running.
Please refer to http://acpi.sourceforge.net/ for help with this
step. How successful you will be depends a lot on you ThinkPad model,
the kernel you are using and any additional patches applied. The
kernel provided with your distribution may not be good enough. I
needed to compile a 2.6.7 kernel with the 20040715 ACPI patch to get
ACPI working reliably on my ThinkPad X40. Old ThinkPad models may not
be supported at all.
Assuming you have the basic ACPI support working (e.g. you can see the
/proc/acpi directory), follow the following steps to install this
driver:
- unpack the archive:
tar xzvf ibm-acpi-x.y.tar.gz; cd ibm-acpi-x.y
- compile the driver:
make
- install the module in your kernel modules directory:
make install
- load the module:
modprobe ibm_acpi
After loading the module, check the "dmesg" output for any error messages.
Features
--------
The driver creates the /proc/acpi/ibm directory. There is a file under
that directory for each feature described below. Note that while the
driver is still in the alpha stage, the exact proc file format and
commands supported by the various features is guaranteed to change
frequently.
Driver Version -- /proc/acpi/ibm/driver
--------------------------------------
The driver name and version. No commands can be written to this file.
Hot Keys -- /proc/acpi/ibm/hotkey
---------------------------------
Without this driver, only the Fn-F4 key (sleep button) generates an
ACPI event. With the driver loaded, the hotkey feature enabled and the
mask set (see below), the various hot keys generate ACPI events in the
following format:
ibm/hotkey HKEY 00000080 0000xxxx
The last four digits vary depending on the key combination pressed.
All labeled Fn-Fx key combinations generate distinct events. In
addition, the lid microswitch and some docking station buttons may
also generate such events.
The following commands can be written to this file:
echo enable > /proc/acpi/ibm/hotkey -- enable the hot keys feature
echo disable > /proc/acpi/ibm/hotkey -- disable the hot keys feature
echo 0xffff > /proc/acpi/ibm/hotkey -- enable all possible hot keys
echo 0x0000 > /proc/acpi/ibm/hotkey -- disable all possible hot keys
... any other 4-hex-digit mask ...
echo reset > /proc/acpi/ibm/hotkey -- restore the original mask
The bit mask allows some control over which hot keys generate ACPI
events. Not all bits in the mask can be modified. Not all bits that
can be modified do anything. Not all hot keys can be individually
controlled by the mask. Most recent ThinkPad models honor the
following bits (assuming the hot keys feature has been enabled):
key bit behavior when set behavior when unset
Fn-F3 always generates ACPI event
Fn-F4 always generates ACPI event
Fn-F5 0010 generate ACPI event enable/disable Bluetooth
Fn-F7 0040 generate ACPI event switch LCD and external display
Fn-F8 0080 generate ACPI event expand screen or none
Fn-F9 0100 generate ACPI event none
Fn-F12 always generates ACPI event
Some models do not support all of the above. For example, the T30 does
not support Fn-F5 and Fn-F9. Other models do not support the mask at
all. On those models, hot keys cannot be controlled individually.
Note that enabling ACPI events for some keys prevents their default
behavior. For example, if events for Fn-F5 are enabled, that key will
no longer enable/disable Bluetooth by itself. This can still be done
from an acpid handler for the ibm/hotkey event.
Note also that not all Fn key combinations are supported through
ACPI. For example, on the X40, the brightness, volume and "Access IBM"
buttons do not generate ACPI events even with this driver. They *can*
be used through the "ThinkPad Buttons" utility, see
http://www.nongnu.org/tpb/
Bluetooth -- /proc/acpi/ibm/bluetooth
-------------------------------------
This feature shows the presence and current state of a Bluetooth
device. If Bluetooth is installed, the following commands can be used:
echo enable > /proc/acpi/ibm/bluetooth
echo disable > /proc/acpi/ibm/bluetooth
Video output control -- /proc/acpi/ibm/video
--------------------------------------------
This feature allows control over the devices used for video output -
LCD, CRT or DVI (if available). The following commands are available:
echo lcd_enable > /proc/acpi/ibm/video
echo lcd_disable > /proc/acpi/ibm/video
echo crt_enable > /proc/acpi/ibm/video
echo crt_disable > /proc/acpi/ibm/video
echo dvi_enable > /proc/acpi/ibm/video
echo dvi_disable > /proc/acpi/ibm/video
echo auto_enable > /proc/acpi/ibm/video
echo auto_disable > /proc/acpi/ibm/video
echo expand_toggle > /proc/acpi/ibm/video
echo video_switch > /proc/acpi/ibm/video
Each video output device can be enabled or disabled individually.
Reading /proc/acpi/ibm/video shows the status of each device.
Automatic video switching can be enabled or disabled. When automatic
video switching is enabled, certain events (e.g. opening the lid,
docking or undocking) cause the video output device to change
automatically. While this can be useful, it also causes flickering
and, on the X40, video corruption. By disabling automatic switching,
the flickering or video corruption can be avoided.
The video_switch command cycles through the available video outputs
(it sumulates the behavior of Fn-F7).
Video expansion can be toggled through this feature. This controls
whether the display is expanded to fill the entire LCD screen when a
mode with less than full resolution is used. Note that the current
video expansion status cannot be determined through this feature.
Note that on many models (particularly those using Radeon graphics
chips) the X driver configures the video card in a way which prevents
Fn-F7 from working. This also disables the video output switching
features of this driver, as it uses the same ACPI methods as
Fn-F7. Video switching on the console should still work.
ThinkLight control -- /proc/acpi/ibm/light
------------------------------------------
The current status of the ThinkLight can be found in this file. A few
models which do not make the status available will show it as
"unknown". The available commands are:
echo on > /proc/acpi/ibm/light
echo off > /proc/acpi/ibm/light
Docking / Undocking -- /proc/acpi/ibm/dock
------------------------------------------
Docking and undocking (e.g. with the X4 UltraBase) requires some
actions to be taken by the operating system to safely make or break
the electrical connections with the dock.
The docking feature of this driver generates the following ACPI events:
ibm/dock GDCK 00000003 00000001 -- eject request
ibm/dock GDCK 00000003 00000002 -- undocked
ibm/dock GDCK 00000000 00000003 -- docked
NOTE: These events will only be generated if the laptop was docked
when originally booted. This is due to the current lack of support for
hot plugging of devices in the Linux ACPI framework. If the laptop was
booted while not in the dock, the following message is shown in the
logs: "ibm_acpi: dock device not present". No dock-related events are
generated but the dock and undock commands described below still
work. They can be executed manually or triggered by Fn key
combinations (see the example acpid configuration files included in
the driver tarball package available on the web site).
When the eject request button on the dock is pressed, the first event
above is generated. The handler for this event should issue the
following command:
echo undock > /proc/acpi/ibm/dock
After the LED on the dock goes off, it is safe to eject the laptop.
Note: if you pressed this key by mistake, go ahead and eject the
laptop, then dock it back in. Otherwise, the dock may not function as
expected.
When the laptop is docked, the third event above is generated. The
handler for this event should issue the following command to fully
enable the dock:
echo dock > /proc/acpi/ibm/dock
The contents of the /proc/acpi/ibm/dock file shows the current status
of the dock, as provided by the ACPI framework.
The docking support in this driver does not take care of enabling or
disabling any other devices you may have attached to the dock. For
example, a CD drive plugged into the UltraBase needs to be disabled or
enabled separately. See the provided example acpid configuration files
for how this can be accomplished.
There is no support yet for PCI devices that may be attached to a
docking station, e.g. in the ThinkPad Dock II. The driver currently
does not recognize, enable or disable such devices. This means that
the only docking stations currently supported are the X-series
UltraBase docks and "dumb" port replicators like the Mini Dock (the
latter don't need any ACPI support, actually).
UltraBay Eject -- /proc/acpi/ibm/bay
------------------------------------
Inserting or ejecting an UltraBay device requires some actions to be
taken by the operating system to safely make or break the electrical
connections with the device.
This feature generates the following ACPI events:
ibm/bay MSTR 00000003 00000000 -- eject request
ibm/bay MSTR 00000001 00000000 -- eject lever inserted
NOTE: These events will only be generated if the UltraBay was present
when the laptop was originally booted (on the X series, the UltraBay
is in the dock, so it may not be present if the laptop was undocked).
This is due to the current lack of support for hot plugging of devices
in the Linux ACPI framework. If the laptop was booted without the
UltraBay, the following message is shown in the logs: "ibm_acpi: bay
device not present". No bay-related events are generated but the eject
command described below still works. It can be executed manually or
triggered by a hot key combination.
Sliding the eject lever generates the first event shown above. The
handler for this event should take whatever actions are necessary to
shut down the device in the UltraBay (e.g. call idectl), then issue
the following command:
echo eject > /proc/acpi/ibm/bay
After the LED on the UltraBay goes off, it is safe to pull out the
device.
When the eject lever is inserted, the second event above is
generated. The handler for this event should take whatever actions are
necessary to enable the UltraBay device (e.g. call idectl).
The contents of the /proc/acpi/ibm/bay file shows the current status
of the UltraBay, as provided by the ACPI framework.
Experimental Features
---------------------
The following features are marked experimental because using them
involves guessing the correct values of some parameters. Guessing
incorrectly may have undesirable effects like crashing your
ThinkPad. USE THESE WITH CAUTION! To activate them, you'll need to
supply the experimental=1 parameter when loading the module.
Experimental: CMOS control - /proc/acpi/ibm/cmos
------------------------------------------------
This feature is used internally by the ACPI firmware to control the
ThinkLight on most newer ThinkPad models. It appears that it can also
control LCD brightness, sounds volume and more, but only on some
models.
The commands are non-negative integer numbers:
echo 0 >/proc/acpi/ibm/cmos
echo 1 >/proc/acpi/ibm/cmos
echo 2 >/proc/acpi/ibm/cmos
...
The range of numbers which are used internally by various models is 0
to 21, but it's possible that numbers outside this range have
interesting behavior. Here is the behavior on the X40 (tpb is the
ThinkPad Buttons utility):
0 - no effect but tpb reports "Volume down"
1 - no effect but tpb reports "Volume up"
2 - no effect but tpb reports "Mute on"
3 - simulate pressing the "Access IBM" button
4 - LCD brightness up
5 - LCD brightness down
11 - toggle screen expansion
12 - ThinkLight on
13 - ThinkLight off
14 - no effect but tpb reports ThinkLight status change
If you try this feature, please send me a report similar to the
above. On models which allow control of LCD brightness or sound
volume, I'd like to provide this functionality in an user-friendly
way, but first I need a way to identify the models which this is
possible.
Experimental: LED control - /proc/acpi/ibm/LED
----------------------------------------------
Some of the LED indicators can be controlled through this feature. The
available commands are:
echo <led number> on >/proc/acpi/ibm/led
echo <led number> off >/proc/acpi/ibm/led
echo <led number> blink >/proc/acpi/ibm/led
The <led number> parameter is a non-negative integer. The range of LED
numbers used internally by various models is 0 to 7 but it's possible
that numbers outside this range are also valid. Here is the mapping on
the X40:
0 - power
1 - battery (orange)
2 - battery (green)
3 - UltraBase dock
4 - UltraBay (in dock)
7 - standby
All of the above can be turned on and off and can be made to blink.
If you try this feature, please send me a report similar to the
above. I'd like to provide this functionality in an user-friendly way,
but first I need to identify the which numbers correspond to which
LEDs on various models.
Experimental: ACPI sounds - /proc/acpi/ibm/beep
-----------------------------------------------
The BEEP method is used internally by the ACPI firmware to provide
audible alerts in various situtation. This feature allows the same
sounds to be triggered manually.
The commands are non-negative integer numbers:
echo 0 >/proc/acpi/ibm/beep
echo 1 >/proc/acpi/ibm/beep
echo 2 >/proc/acpi/ibm/beep
...
The range of numbers which are used internally by various models is 0
to 17, but it's possible that numbers outside this range are also
valid. Here is the behavior on the X40:
2 - two beeps, pause, third beep
3 - single beep
4 - "unable"
5 - single beep
6 - "AC/DC"
7 - high-pitched beep
9 - three short beeps
10 - very long beep
12 - low-pitched beep
(I've only been able to identify a couple of them).
If you try this feature, please send me a report similar to the
above. I'd like to provide this functionality in an user-friendly way,
but first I need to identify the which numbers correspond to which
sounds on various models.
Multiple Command, Module Parameters
-----------------------------------
Multiple commands can be written to the proc files in one shot by
separating them with commas, for example:
echo enable,0xffff > /proc/acpi/ibm/hotkey
echo lcd_disable,crt_enable > /proc/acpi/ibm/video
Commands can also be specified when loading the ibm_acpi module, for
example:
modprobe ibm_acpi hotkey=enable,0xffff video=auto_disable
Example Configuration
---------------------
The ACPI support in the kernel is intended to be used in conjunction
with a user-space daemon, acpid. The configuration files for this
daemon control what actions are taken in response to various ACPI
events. An example set of configuration files are included in the
config/ directory of the tarball package available on the web
site. Note that these are provided for illustration purposes only and
may need to be adapted to your particular setup.
The following utility scripts are used by the example action
scripts (included with ibm-acpi for completeness):
/usr/local/sbin/idectl -- from the hdparm source distribution,
see http://www.ibiblio.org/pub/Linux/system/hardware
/usr/local/sbin/laptop_mode -- from the Linux kernel source
distribution, see Documentation/laptop-mode.txt
/sbin/service -- comes with Redhat/Fedora distributions
Toan T Nguyen <ntt@control.uchicago.edu> has written a SuSE powersave
script for the X20, included in config/usr/sbin/ibm_hotkeys_X20
Henrik Brix Andersen <brix@gentoo.org> has written a Gentoo ACPI event
handler script for the X31. You can get the latest version from
http://dev.gentoo.org/~brix/files/x31.sh
David Schweikert <dws@ee.eth.ch> has written an alternative blank.sh
script which works on Debian systems, included in
configs/etc/acpi/actions/blank-debian.sh
TODO
----
I'd like to implement the following features but haven't yet found the
time and/or I don't yet know how to implement them:
- UltraBay floppy drive support
drivers/acpi/Kconfig
View file @ e5f49722
...@@ -176,6 +176,20 @@ config ACPI_ASUS ...@@ -176,6 +176,20 @@ config ACPI_ASUS
something works not quite as expected, please use the mailing list something works not quite as expected, please use the mailing list
available on the above page (acpi4asus-user@lists.sourceforge.net) available on the above page (acpi4asus-user@lists.sourceforge.net)
config ACPI_IBM
tristate "IBM ThinkPad Laptop Extras"
depends on X86
depends on ACPI_INTERPRETER
default m
---help---
This is a Linux ACPI driver for the IBM ThinkPad laptops. It adds
support for Fn-Fx key combinations, Bluetooth control, video
output switching, ThinkLight control, UltraBay eject and more.
For more information about this driver see Documentation/ibm-acpi.txt
and http://ibm-acpi.sf.net/ .
If you have an IBM ThinkPad laptop, say Y or M here.
config ACPI_TOSHIBA config ACPI_TOSHIBA
tristate "Toshiba Laptop Extras" tristate "Toshiba Laptop Extras"
depends on X86 depends on X86
......
drivers/acpi/Makefile
View file @ e5f49722
...@@ -46,5 +46,6 @@ obj-$(CONFIG_ACPI_SYSTEM) += system.o event.o ...@@ -46,5 +46,6 @@ obj-$(CONFIG_ACPI_SYSTEM) += system.o event.o
obj-$(CONFIG_ACPI_DEBUG) += debug.o obj-$(CONFIG_ACPI_DEBUG) += debug.o
obj-$(CONFIG_ACPI_NUMA) += numa.o obj-$(CONFIG_ACPI_NUMA) += numa.o
obj-$(CONFIG_ACPI_ASUS) += asus_acpi.o obj-$(CONFIG_ACPI_ASUS) += asus_acpi.o
obj-$(CONFIG_ACPI_IBM) += ibm_acpi.o
obj-$(CONFIG_ACPI_TOSHIBA) += toshiba_acpi.o obj-$(CONFIG_ACPI_TOSHIBA) += toshiba_acpi.o
obj-$(CONFIG_ACPI_BUS) += scan.o motherboard.o obj-$(CONFIG_ACPI_BUS) += scan.o motherboard.o
drivers/acpi/ibm_acpi.c 0 → 100644
View file @ e5f49722
/*
* ibm_acpi.c - IBM ThinkPad ACPI Extras
*
*
* Copyright (C) 2004 Borislav Deianov
*
* 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
*
* Changelog:
*
* 2004-08-09 0.1 initial release, support for X series
* 2004-08-14 0.2 support for T series, X20
* bluetooth enable/disable
* hotkey events disabled by default
* removed fan control, currently useless
* 2004-08-17 0.3 support for R40
* lcd off, brightness control
* thinklight on/off
* 2004-09-16 0.4 support for module parameters
* hotkey mask can be prefixed by 0x
* video output switching
* video expansion control
* ultrabay eject support
* removed lcd brightness/on/off control, didn't work
* 2004-10-18 0.5 thinklight support on A21e, G40, R32, T20, T21, X20
* proc file format changed
* video_switch command
* experimental cmos control
* experimental led control
* experimental acpi sounds
* 2004-10-19 0.6 use acpi_bus_register_driver() to claim HKEY device
*/
#define IBM_VERSION "0.6"
#include <linux/kernel.h>
#include <linux/module.h>
#include <linux/init.h>
#include <linux/types.h>
#include <linux/proc_fs.h>
#include <asm/uaccess.h>
#include <acpi/acpi_drivers.h>
#include <acpi/acnamesp.h>
#define IBM_NAME "ibm"
#define IBM_DESC "IBM ThinkPad ACPI Extras"
#define IBM_FILE "ibm_acpi"
#define IBM_URL "http://ibm-acpi.sf.net/"
#define IBM_DIR IBM_NAME
#define IBM_CLASS IBM_NAME
#define IBM_LOG IBM_FILE ": "
#define IBM_ERR KERN_ERR IBM_LOG
#define IBM_NOTICE KERN_NOTICE IBM_LOG
#define IBM_INFO KERN_INFO IBM_LOG
#define IBM_DEBUG KERN_DEBUG IBM_LOG
#define IBM_MAX_ACPI_ARGS 3
#define __unused __attribute__ ((unused))
static int experimental;
module_param(experimental, int, 0);
static acpi_handle root_handle = NULL;
#define IBM_HANDLE(object, parent, paths...) \
static acpi_handle object##_handle; \
static acpi_handle *object##_parent = &parent##_handle; \
static char *object##_paths[] = { paths }
IBM_HANDLE(ec, root,
"\\_SB.PCI0.ISA.EC", /* A21e, T20, T21, X20 */
"\\_SB.PCI0.LPC.EC", /* all others */
);
IBM_HANDLE(vid, root,
"\\_SB.PCI0.VID", /* A21e, G40, X30, X40 */
"\\_SB.PCI0.AGP.VID", /* all others */
);
IBM_HANDLE(cmos, root,
"\\UCMS", /* R50, R50p, R51, T4x, X31, X40 */
"\\CMOS", /* A3x, G40, R32, T23, T30, X22, X24, X30 */
"\\CMS", /* R40, R40e */
);
IBM_HANDLE(dock, root,
"\\_SB.GDCK", /* X30, X31, X40 */
"\\_SB.PCI0.DOCK", /* T20, T21, X20 */
"\\_SB.PCI0.PCI1.DOCK", /* all others */
); /* A21e, G40, R32, R40, R40e */
IBM_HANDLE(bay, root,
"\\_SB.PCI0.IDE0.SCND.MSTR"); /* all except A21e */
IBM_HANDLE(bayej, root,
"\\_SB.PCI0.IDE0.SCND.MSTR._EJ0"); /* all except A21e, A31, A31p */
IBM_HANDLE(lght, root, "\\LGHT"); /* A21e, T20, T21, X20 */
IBM_HANDLE(hkey, ec, "HKEY"); /* all */
IBM_HANDLE(led, ec, "LED"); /* all except A21e, T20, T21, X20 */
IBM_HANDLE(sysl, ec, "SYSL"); /* A21e, T20, T21, X20 */
IBM_HANDLE(bled, ec, "BLED"); /* T20, T21, X20 */
IBM_HANDLE(beep, ec, "BEEP"); /* all models */
struct ibm_struct {
char *name;
char *hid;
struct acpi_driver *driver;
int (*init) (struct ibm_struct *);
int (*read) (struct ibm_struct *, char *);
int (*write) (struct ibm_struct *, char *);
void (*exit) (struct ibm_struct *);
void (*notify) (struct ibm_struct *, u32);
acpi_handle *handle;
int type;
struct acpi_device *device;
int driver_registered;
int proc_created;
int init_called;
int notify_installed;
int supported;
union {
struct {
int status;
int mask;
} hotkey;
struct {
int autoswitch;
} video;
} state;
int experimental;
};
struct proc_dir_entry *proc_dir = NULL;
#define onoff(status,bit) ((status) & (1 << (bit)) ? "on" : "off")
#define enabled(status,bit) ((status) & (1 << (bit)) ? "enabled" : "disabled")
#define strlencmp(a,b) (strncmp((a), (b), strlen(b)))
static int acpi_evalf(acpi_handle handle,
void *res, char *method, char *fmt, ...)
{
char *fmt0 = fmt;
struct acpi_object_list params;
union acpi_object in_objs[IBM_MAX_ACPI_ARGS];
struct acpi_buffer result;
union acpi_object out_obj;
acpi_status status;
va_list ap;
char res_type;
int success;
int quiet;
if (!*fmt) {
printk(IBM_ERR "acpi_evalf() called with empty format\n");
return 0;
}
if (*fmt == 'q') {
quiet = 1;
fmt++;
} else
quiet = 0;
res_type = *(fmt++);
params.count = 0;
params.pointer = &in_objs[0];
va_start(ap, fmt);
while (*fmt) {
char c = *(fmt++);
switch (c) {
case 'd': /* int */
in_objs[params.count].integer.value = va_arg(ap, int);
in_objs[params.count++].type = ACPI_TYPE_INTEGER;
break;
/* add more types as needed */
default:
printk(IBM_ERR "acpi_evalf() called "
"with invalid format character '%c'\n", c);
return 0;
}
}
va_end(ap);
result.length = sizeof(out_obj);
result.pointer = &out_obj;
status = acpi_evaluate_object(handle, method, &params, &result);
switch (res_type) {
case 'd': /* int */
if (res)
*(int *)res = out_obj.integer.value;
success = status == AE_OK && out_obj.type == ACPI_TYPE_INTEGER;
break;
case 'v': /* void */
success = status == AE_OK;
break;
/* add more types as needed */
default:
printk(IBM_ERR "acpi_evalf() called "
"with invalid format character '%c'\n", res_type);
return 0;
}
if (!success && !quiet)
printk(IBM_ERR "acpi_evalf(%s, %s, ...) failed: %d\n",
method, fmt0, status);
return success;
}
static void __unused acpi_print_int(acpi_handle handle, char *method)
{
int i;
if (acpi_evalf(handle, &i, method, "d"))
printk(IBM_INFO "%s = 0x%x\n", method, i);
else
printk(IBM_ERR "error calling %s\n", method);
}
static char *next_cmd(char **cmds)
{
char *start = *cmds;
char *end;
while ((end = strchr(start, ',')) && end == start)
start = end + 1;
if (!end)
return NULL;
*end = 0;
*cmds = end + 1;
return start;
}
static int driver_init(struct ibm_struct *ibm)
{
printk(IBM_INFO "%s v%s\n", IBM_DESC, IBM_VERSION);
printk(IBM_INFO "%s\n", IBM_URL);
return 0;
}
static int driver_read(struct ibm_struct *ibm, char *p)
{
int len = 0;
len += sprintf(p + len, "driver:\t\t%s\n", IBM_DESC);
len += sprintf(p + len, "version:\t%s\n", IBM_VERSION);
return len;
}
static int hotkey_get(struct ibm_struct *ibm, int *status, int *mask)
{
if (!acpi_evalf(hkey_handle, status, "DHKC", "d"))
return -EIO;
if (ibm->supported) {
if (!acpi_evalf(hkey_handle, mask, "DHKN", "qd"))
return -EIO;
} else {
*mask = ibm->state.hotkey.mask;
}
return 0;
}
static int hotkey_set(struct ibm_struct *ibm, int status, int mask)
{
int i;
if (!acpi_evalf(hkey_handle, NULL, "MHKC", "vd", status))
return -EIO;
if (!ibm->supported)
return 0;
for (i=0; i<32; i++) {
int bit = ((1 << i) & mask) != 0;
if (!acpi_evalf(hkey_handle, NULL, "MHKM", "vdd", i+1, bit))
return -EIO;
}
return 0;
}
static int hotkey_init(struct ibm_struct *ibm)
{
int ret;
ibm->supported = 1;
ret = hotkey_get(ibm,
&ibm->state.hotkey.status,
&ibm->state.hotkey.mask);
if (ret < 0) {
/* mask not supported on A21e, T20, T21, X20, X22, X24 */
ibm->supported = 0;
ret = hotkey_get(ibm,
&ibm->state.hotkey.status,
&ibm->state.hotkey.mask);
}
return ret;
}
static int hotkey_read(struct ibm_struct *ibm, char *p)
{
int status, mask;
int len = 0;
if (hotkey_get(ibm, &status, &mask) < 0)
return -EIO;
len += sprintf(p + len, "status:\t\t%s\n", enabled(status, 0));
if (ibm->supported) {
len += sprintf(p + len, "mask:\t\t0x%04x\n", mask);
len += sprintf(p + len,
"commands:\tenable, disable, reset, <mask>\n");
} else {
len += sprintf(p + len, "mask:\t\tnot supported\n");
len += sprintf(p + len, "commands:\tenable, disable, reset\n");
}
return len;
}
static int hotkey_write(struct ibm_struct *ibm, char *buf)
{
int status, mask;
char *cmd;
int do_cmd = 0;
if (hotkey_get(ibm, &status, &mask) < 0)
return -ENODEV;
while ((cmd = next_cmd(&buf))) {
if (strlencmp(cmd, "enable") == 0) {
status = 1;
} else if (strlencmp(cmd, "disable") == 0) {
status = 0;
} else if (strlencmp(cmd, "reset") == 0) {
status = ibm->state.hotkey.status;
mask = ibm->state.hotkey.mask;
} else if (sscanf(cmd, "0x%x", &mask) == 1) {
/* mask set */
} else if (sscanf(cmd, "%x", &mask) == 1) {
/* mask set */
} else
return -EINVAL;
do_cmd = 1;
}
if (do_cmd && hotkey_set(ibm, status, mask) < 0)
return -EIO;
return 0;
}
static void hotkey_exit(struct ibm_struct *ibm)
{
hotkey_set(ibm, ibm->state.hotkey.status, ibm->state.hotkey.mask);
}
static void hotkey_notify(struct ibm_struct *ibm, u32 event)
{
int hkey;
if (acpi_evalf(hkey_handle, &hkey, "MHKP", "d"))
acpi_bus_generate_event(ibm->device, event, hkey);
else {
printk(IBM_ERR "unknown hotkey event %d\n", event);
acpi_bus_generate_event(ibm->device, event, 0);
}
}
static int bluetooth_init(struct ibm_struct *ibm)
{
/* bluetooth not supported on A21e, G40, T20, T21, X20 */
ibm->supported = acpi_evalf(hkey_handle, NULL, "GBDC", "qv");
return 0;
}
static int bluetooth_status(struct ibm_struct *ibm)
{
int status;
if (!ibm->supported || !acpi_evalf(hkey_handle, &status, "GBDC", "d"))
status = 0;
return status;
}
static int bluetooth_read(struct ibm_struct *ibm, char *p)
{
int len = 0;
int status = bluetooth_status(ibm);
if (!ibm->supported)
len += sprintf(p + len, "status:\t\tnot supported\n");
else if (!(status & 1))
len += sprintf(p + len, "status:\t\tnot installed\n");
else {
len += sprintf(p + len, "status:\t\t%s\n", enabled(status, 1));
len += sprintf(p + len, "commands:\tenable, disable\n");
}
return len;
}
static int bluetooth_write(struct ibm_struct *ibm, char *buf)
{
int status = bluetooth_status(ibm);
char *cmd;
int do_cmd = 0;
if (!ibm->supported)
return -EINVAL;
while ((cmd = next_cmd(&buf))) {
if (strlencmp(cmd, "enable") == 0) {
status |= 2;
} else if (strlencmp(cmd, "disable") == 0) {
status &= ~2;
} else
return -EINVAL;
do_cmd = 1;
}
if (do_cmd && !acpi_evalf(hkey_handle, NULL, "SBDC", "vd", status))
return -EIO;
return 0;
}
static int video_init(struct ibm_struct *ibm)
{
if (!acpi_evalf(vid_handle,
&ibm->state.video.autoswitch, "^VDEE", "d"))
return -ENODEV;
return 0;
}
static int video_status(struct ibm_struct *ibm)
{
int status = 0;
int i;
acpi_evalf(NULL, NULL, "\\VUPS", "vd", 1);
if (acpi_evalf(NULL, &i, "\\VCDC", "d"))
status |= 0x02 * i;
acpi_evalf(NULL, NULL, "\\VUPS", "vd", 0);
if (acpi_evalf(NULL, &i, "\\VCDL", "d"))
status |= 0x01 * i;
if (acpi_evalf(NULL, &i, "\\VCDD", "d"))
status |= 0x08 * i;
if (acpi_evalf(vid_handle, &i, "^VDEE", "d"))
status |= 0x10 * (i & 1);
return status;
}
static int video_read(struct ibm_struct *ibm, char *p)
{
int status = video_status(ibm);
int len = 0;
len += sprintf(p + len, "lcd:\t\t%s\n", enabled(status, 0));
len += sprintf(p + len, "crt:\t\t%s\n", enabled(status, 1));
len += sprintf(p + len, "dvi:\t\t%s\n", enabled(status, 3));
len += sprintf(p + len, "auto:\t\t%s\n", enabled(status, 4));
len += sprintf(p + len, "commands:\tlcd_enable, lcd_disable, "
"crt_enable, crt_disable\n");
len += sprintf(p + len, "commands:\tdvi_enable, dvi_disable, "
"auto_enable, auto_disable\n");
len += sprintf(p + len, "commands:\tvideo_switch, expand_toggle\n");
return len;
}
static int video_write(struct ibm_struct *ibm, char *buf)
{
char *cmd;
int enable, disable, status;
enable = disable = 0;
while ((cmd = next_cmd(&buf))) {
if (strlencmp(cmd, "lcd_enable") == 0) {
enable |= 0x01;
} else if (strlencmp(cmd, "lcd_disable") == 0) {
disable |= 0x01;
} else if (strlencmp(cmd, "crt_enable") == 0) {
enable |= 0x02;
} else if (strlencmp(cmd, "crt_disable") == 0) {
disable |= 0x02;
} else if (strlencmp(cmd, "dvi_enable") == 0) {
enable |= 0x08;
} else if (strlencmp(cmd, "dvi_disable") == 0) {
disable |= 0x08;
} else if (strlencmp(cmd, "auto_enable") == 0) {
if (!acpi_evalf(vid_handle, NULL, "_DOS", "vd", 1))
return -EIO;
} else if (strlencmp(cmd, "auto_disable") == 0) {
if (!acpi_evalf(vid_handle, NULL, "_DOS", "vd", 0))
return -EIO;
} else if (strlencmp(cmd, "video_switch") == 0) {
int autoswitch;
if (!acpi_evalf(vid_handle, &autoswitch, "^VDEE", "d"))
return -EIO;
if (!acpi_evalf(vid_handle, NULL, "_DOS", "vd", 1))
return -EIO;
if (!acpi_evalf(vid_handle, NULL, "VSWT", "v"))
return -EIO;
if (!acpi_evalf(vid_handle, NULL, "_DOS", "vd",
autoswitch))
return -EIO;
} else if (strlencmp(cmd, "expand_toggle") == 0) {
if (!acpi_evalf(NULL, NULL, "\\VEXP", "v"))
return -EIO;
} else
return -EINVAL;
}
if (enable || disable) {
status = (video_status(ibm) & 0x0f & ~disable) | enable;
if (!acpi_evalf(NULL, NULL, "\\VUPS", "vd", 0x80))
return -EIO;
if (!acpi_evalf(NULL, NULL, "\\VSDS", "vdd", status, 1))
return -EIO;
}
return 0;
}
static void video_exit(struct ibm_struct *ibm)
{
acpi_evalf(vid_handle, NULL, "_DOS", "vd",
ibm->state.video.autoswitch);
}
static int light_init(struct ibm_struct *ibm)
{
/* kblt not supported on G40, R32, X20 */
ibm->supported = acpi_evalf(ec_handle, NULL, "KBLT", "qv");
return 0;
}
static int light_read(struct ibm_struct *ibm, char *p)
{
int len = 0;
int status = 0;
if (ibm->supported) {
if (!acpi_evalf(ec_handle, &status, "KBLT", "d"))
return -EIO;
len += sprintf(p + len, "status:\t\t%s\n", onoff(status, 0));
} else
len += sprintf(p + len, "status:\t\tunknown\n");
len += sprintf(p + len, "commands:\ton, off\n");
return len;
}
static int light_write(struct ibm_struct *ibm, char *buf)
{
int cmos_cmd, lght_cmd;
char *cmd;
int success;
while ((cmd = next_cmd(&buf))) {
if (strlencmp(cmd, "on") == 0) {
cmos_cmd = 0x0c;
lght_cmd = 1;
} else if (strlencmp(cmd, "off") == 0) {
cmos_cmd = 0x0d;
lght_cmd = 0;
} else
return -EINVAL;
success = cmos_handle ?
acpi_evalf(cmos_handle, NULL, NULL, "vd", cmos_cmd) :
acpi_evalf(lght_handle, NULL, NULL, "vd", lght_cmd);
if (!success)
return -EIO;
}
return 0;
}
static int _sta(acpi_handle handle)
{
int status;
if (!handle || !acpi_evalf(handle, &status, "_STA", "d"))
status = 0;
return status;
}
#define dock_docked() (_sta(dock_handle) & 1)
static int dock_read(struct ibm_struct *ibm, char *p)
{
int len = 0;
int docked = dock_docked();
if (!dock_handle)
len += sprintf(p + len, "status:\t\tnot supported\n");
else if (!docked)
len += sprintf(p + len, "status:\t\tundocked\n");
else {
len += sprintf(p + len, "status:\t\tdocked\n");
len += sprintf(p + len, "commands:\tdock, undock\n");
}
return len;
}
static int dock_write(struct ibm_struct *ibm, char *buf)
{
char *cmd;
if (!dock_docked())
return -EINVAL;
while ((cmd = next_cmd(&buf))) {
if (strlencmp(cmd, "undock") == 0) {
if (!acpi_evalf(dock_handle, NULL, "_DCK", "vd", 0))
return -EIO;
if (!acpi_evalf(dock_handle, NULL, "_EJ0", "vd", 1))
return -EIO;
} else if (strlencmp(cmd, "dock") == 0) {
if (!acpi_evalf(dock_handle, NULL, "_DCK", "vd", 1))
return -EIO;
} else
return -EINVAL;
}
return 0;
}
static void dock_notify(struct ibm_struct *ibm, u32 event)
{
int docked = dock_docked();
if (event == 3 && docked)
acpi_bus_generate_event(ibm->device, event, 1); /* button */
else if (event == 3 && !docked)
acpi_bus_generate_event(ibm->device, event, 2); /* undock */
else if (event == 0 && docked)
acpi_bus_generate_event(ibm->device, event, 3); /* dock */
else {
printk(IBM_ERR "unknown dock event %d, status %d\n",
event, _sta(dock_handle));
acpi_bus_generate_event(ibm->device, event, 0); /* unknown */
}
}
#define bay_occupied() (_sta(bay_handle) & 1)
static int bay_init(struct ibm_struct *ibm)
{
/* bay not supported on A21e, G40, R32, R40e */
ibm->supported = bay_handle && bayej_handle &&
acpi_evalf(bay_handle, NULL, "_STA", "qv");
return 0;
}
static int bay_read(struct ibm_struct *ibm, char *p)
{
int len = 0;
int occupied = bay_occupied();
if (!ibm->supported)
len += sprintf(p + len, "status:\t\tnot supported\n");
else if (!occupied)
len += sprintf(p + len, "status:\t\tunoccupied\n");
else {
len += sprintf(p + len, "status:\t\toccupied\n");
len += sprintf(p + len, "commands:\teject\n");
}
return len;
}
static int bay_write(struct ibm_struct *ibm, char *buf)
{
char *cmd;
while ((cmd = next_cmd(&buf))) {
if (strlencmp(cmd, "eject") == 0) {
if (!ibm->supported ||
!acpi_evalf(bay_handle, NULL, "_EJ0", "vd", 1))
return -EIO;
} else
return -EINVAL;
}
return 0;
}
static void bay_notify(struct ibm_struct *ibm, u32 event)
{
acpi_bus_generate_event(ibm->device, event, 0);
}
static int cmos_read(struct ibm_struct *ibm, char *p)
{
int len = 0;
/* cmos not supported on A21e, T20, T21, X20 */
if (!cmos_handle)
len += sprintf(p + len, "status:\t\tnot supported\n");
else {
len += sprintf(p + len, "status:\t\tsupported\n");
len += sprintf(p + len, "commands:\t<int>\n");
}
return len;
}
static int cmos_write(struct ibm_struct *ibm, char *buf)
{
char *cmd;
int cmos_cmd;
if (!cmos_handle)
return -EINVAL;
while ((cmd = next_cmd(&buf))) {
if (sscanf(cmd, "%u", &cmos_cmd) == 1) {
/* cmos_cmd set */
} else
return -EINVAL;
if (!acpi_evalf(cmos_handle, NULL, NULL, "vd", cmos_cmd))
return -EIO;
}
return 0;
}
static int led_read(struct ibm_struct *ibm, char *p)
{
int len = 0;
len += sprintf(p + len, "commands:\t"
"<int> on, <int> off, <int> blink\n");
return len;
}
static int led_write(struct ibm_struct *ibm, char *buf)
{
char *cmd;
unsigned int led;
int led_cmd, sysl_cmd, bled_a, bled_b;
if (!led_handle && !bled_handle)
return -EINVAL;
while ((cmd = next_cmd(&buf))) {
if (sscanf(cmd, "%u", &led) != 1)
return -EINVAL;
if (strstr(cmd, "blink")) {
led_cmd = 0xc0;
sysl_cmd = 2;
bled_a = 2;
bled_b = 1;
} else if (strstr(cmd, "on")) {
led_cmd = 0x80;
sysl_cmd = 1;
bled_a = 2;
bled_b = 0;
} else if (strstr(cmd, "off")) {
led_cmd = sysl_cmd = bled_a = bled_b = 0;
} else
return -EINVAL;
if (led_handle) {
if (!acpi_evalf(led_handle, NULL, NULL, "vdd",
led, led_cmd))
return -EIO;
} else if (led < 2) {
if (acpi_evalf(sysl_handle, NULL, NULL, "vdd",
led, sysl_cmd))
return -EIO;
} else if (led == 2 && bled_handle) {
if (acpi_evalf(bled_handle, NULL, NULL, "vdd",
bled_a, bled_b))
return -EIO;
} else
return -EINVAL;
}
return 0;
}
static int beep_read(struct ibm_struct *ibm, char *p)
{
int len = 0;
len += sprintf(p + len, "commands:\t<int>\n");
return len;
}
static int beep_write(struct ibm_struct *ibm, char *buf)
{
char *cmd;
int beep_cmd;
while ((cmd = next_cmd(&buf))) {
if (sscanf(cmd, "%u", &beep_cmd) == 1) {
/* beep_cmd set */
} else
return -EINVAL;
if (!acpi_evalf(beep_handle, NULL, NULL, "vd", beep_cmd))
return -EIO;
}
return 0;
}
struct ibm_struct ibms[] = {
{
.name = "driver",
.init = driver_init,
.read = driver_read,
},
{
.name = "hotkey",
.hid = "IBM0068",
.init = hotkey_init,
.read = hotkey_read,
.write = hotkey_write,
.exit = hotkey_exit,
.notify = hotkey_notify,
.handle = &hkey_handle,
.type = ACPI_DEVICE_NOTIFY,
},
{
.name = "bluetooth",
.init = bluetooth_init,
.read = bluetooth_read,
.write = bluetooth_write,
},
{
.name = "video",
.init = video_init,
.read = video_read,
.write = video_write,
.exit = video_exit,
},
{
.name = "light",
.init = light_init,
.read = light_read,
.write = light_write,
},
{
.name = "dock",
.read = dock_read,
.write = dock_write,
.notify = dock_notify,
.handle = &dock_handle,
.type = ACPI_SYSTEM_NOTIFY,
},
{
.name = "bay",
.init = bay_init,
.read = bay_read,
.write = bay_write,
.notify = bay_notify,
.handle = &bay_handle,
.type = ACPI_SYSTEM_NOTIFY,
},
{
.name = "cmos",
.read = cmos_read,
.write = cmos_write,
.experimental = 1,
},
{
.name = "led",
.read = led_read,
.write = led_write,
.experimental = 1,
},
{
.name = "beep",
.read = beep_read,
.write = beep_write,
.experimental = 1,
},
};
#define NUM_IBMS (sizeof(ibms)/sizeof(ibms[0]))
static int dispatch_read(char *page, char **start, off_t off, int count,
int *eof, void *data)
{
struct ibm_struct *ibm = (struct ibm_struct *)data;
int len;
if (!ibm || !ibm->read)
return -EINVAL;
len = ibm->read(ibm, page);
if (len < 0)
return len;
if (len <= off + count)
*eof = 1;
*start = page + off;
len -= off;
if (len > count)
len = count;
if (len < 0)
len = 0;
return len;
}
static int dispatch_write(struct file *file, const char __user *userbuf,
unsigned long count, void *data)
{
struct ibm_struct *ibm = (struct ibm_struct *)data;
char *kernbuf;
int ret;
if (!ibm || !ibm->write)
return -EINVAL;
kernbuf = kmalloc(count + 2, GFP_KERNEL);
if (!kernbuf)
return -ENOMEM;
if (copy_from_user(kernbuf, userbuf, count)) {
kfree(kernbuf);
return -EFAULT;
}
kernbuf[count] = 0;
strcat(kernbuf, ",");
ret = ibm->write(ibm, kernbuf);
if (ret == 0)
ret = count;
kfree(kernbuf);
return ret;
}
static void dispatch_notify(acpi_handle handle, u32 event, void *data)
{
struct ibm_struct *ibm = (struct ibm_struct *)data;
if (!ibm || !ibm->notify)
return;
ibm->notify(ibm, event);
}
static int setup_notify(struct ibm_struct *ibm)
{
acpi_status status;
int ret;
if (!*ibm->handle)
return 0;
ret = acpi_bus_get_device(*ibm->handle, &ibm->device);
if (ret < 0) {
printk(IBM_ERR "%s device not present\n", ibm->name);
return 0;
}
acpi_driver_data(ibm->device) = ibm;
sprintf(acpi_device_class(ibm->device), "%s/%s", IBM_NAME, ibm->name);
status = acpi_install_notify_handler(*ibm->handle, ibm->type,
dispatch_notify, ibm);
if (ACPI_FAILURE(status)) {
printk(IBM_ERR "acpi_install_notify_handler(%s) failed: %d\n",
ibm->name, status);
return -ENODEV;
}
ibm->notify_installed = 1;
return 0;
}
static int device_add(struct acpi_device *device)
{
return 0;
}
static int register_driver(struct ibm_struct *ibm)
{
int ret;
ibm->driver = kmalloc(sizeof(struct acpi_driver), GFP_KERNEL);
if (!ibm->driver) {
printk(IBM_ERR "kmalloc(ibm->driver) failed\n");
return -1;
}
memset(ibm->driver, 0, sizeof(struct acpi_driver));
sprintf(ibm->driver->name, "%s/%s", IBM_NAME, ibm->name);
ibm->driver->ids = ibm->hid;
ibm->driver->ops.add = &device_add;
ret = acpi_bus_register_driver(ibm->driver);
if (ret < 0) {
printk(IBM_ERR "acpi_bus_register_driver(%s) failed: %d\n",
ibm->hid, ret);
kfree(ibm->driver);
}
return ret;
}
static int ibm_init(struct ibm_struct *ibm)
{
int ret;
struct proc_dir_entry *entry;
if (ibm->experimental && !experimental)
return 0;
if (ibm->hid) {
ret = register_driver(ibm);
if (ret < 0)
return ret;
ibm->driver_registered = 1;
}
if (ibm->init) {
ret = ibm->init(ibm);
if (ret != 0)
return ret;
ibm->init_called = 1;
}
entry = create_proc_entry(ibm->name, S_IFREG | S_IRUGO | S_IWUSR,
proc_dir);
if (!entry) {
printk(IBM_ERR "unable to create proc entry %s\n", ibm->name);
return -ENODEV;
}
entry->owner = THIS_MODULE;
ibm->proc_created = 1;
entry->data = ibm;
if (ibm->read)
entry->read_proc = &dispatch_read;
if (ibm->write)
entry->write_proc = &dispatch_write;
if (ibm->notify) {
ret = setup_notify(ibm);
if (ret < 0)
return ret;
}
return 0;
}
static void ibm_exit(struct ibm_struct *ibm)
{
if (ibm->notify_installed)
acpi_remove_notify_handler(*ibm->handle, ibm->type,
dispatch_notify);
if (ibm->proc_created)
remove_proc_entry(ibm->name, proc_dir);
if (ibm->init_called && ibm->exit)
ibm->exit(ibm);
if (ibm->driver_registered) {
acpi_bus_unregister_driver(ibm->driver);
kfree(ibm->driver);
}
}
static int ibm_handle_init(char *name,
acpi_handle *handle, acpi_handle parent,
char **paths, int num_paths, int required)
{
int i;
acpi_status status;
for (i=0; i<num_paths; i++) {
status = acpi_get_handle(parent, paths[i], handle);
if (ACPI_SUCCESS(status))
return 0;
}
if (required) {
printk(IBM_ERR "%s object not found\n", name);
return -1;
}
*handle = NULL;
return 0;
}
#define IBM_HANDLE_INIT_REQ(object) do { \
if (ibm_handle_init(#object, &object##_handle, *object##_parent, \
object##_paths, sizeof(object##_paths)/sizeof(char *), 1) < 0)\
return -ENODEV; \
} while (0)
#define IBM_HANDLE_INIT(object) \
ibm_handle_init(#object, &object##_handle, *object##_parent, \
object##_paths, sizeof(object##_paths)/sizeof(char *), 0)
static void ibm_param(char *feature, char *cmd)
{
int i;
strcat(cmd, ",");
for (i=0; i<NUM_IBMS; i++)
if (strcmp(ibms[i].name, feature) == 0)
ibms[i].write(&ibms[i], cmd);
}
#define IBM_PARAM(feature) do { \
static char cmd[32]; \
module_param_string(feature, cmd, sizeof(cmd) - 1, 0); \
ibm_param(#feature, cmd); \
} while (0)
static void __exit acpi_ibm_exit(void)
{
int i;
for (i=NUM_IBMS-1; i>=0; i--)
ibm_exit(&ibms[i]);
remove_proc_entry(IBM_DIR, acpi_root_dir);
}
static int __init acpi_ibm_init(void)
{
int ret, i;
if (acpi_disabled)
return -ENODEV;
proc_dir = proc_mkdir(IBM_DIR, acpi_root_dir);
if (!proc_dir) {
printk(IBM_ERR "unable to create proc dir %s", IBM_DIR);
return -ENODEV;
}
proc_dir->owner = THIS_MODULE;
IBM_HANDLE_INIT_REQ(ec);
IBM_HANDLE_INIT_REQ(hkey);
IBM_HANDLE_INIT_REQ(vid);
IBM_HANDLE_INIT_REQ(cmos);
IBM_HANDLE_INIT(lght);
IBM_HANDLE_INIT(dock);
IBM_HANDLE_INIT(bay);
IBM_HANDLE_INIT(bayej);
IBM_HANDLE_INIT(led);
IBM_HANDLE_INIT(sysl);
IBM_HANDLE_INIT(bled);
IBM_HANDLE_INIT_REQ(beep);
if (!led_handle && !sysl_handle) {
printk(IBM_ERR "neither led nor sysl object found\n");
return -ENODEV;
}
for (i=0; i<NUM_IBMS; i++) {
ret = ibm_init(&ibms[i]);
if (ret < 0) {
acpi_ibm_exit();
return ret;
}
}
IBM_PARAM(hotkey);
IBM_PARAM(bluetooth);
IBM_PARAM(video);
IBM_PARAM(light);
IBM_PARAM(dock);
IBM_PARAM(bay);
IBM_PARAM(cmos);
IBM_PARAM(led);
IBM_PARAM(beep);
return 0;
}
module_init(acpi_ibm_init);
module_exit(acpi_ibm_exit);
MODULE_AUTHOR("Borislav Deianov");
MODULE_DESCRIPTION(IBM_DESC);
MODULE_LICENSE("GPL");
Markdown is supported
0% or
You are about to add 0 people to the discussion. Proceed with caution.
Finish editing this message first!
Please register or to comment
GitLab Nexedi Edition | About GitLab | About Nexedi | 沪ICP备2021021310号-2 | 沪ICP备2021021310号-7