| Commit message (Collapse) | Author | Age | Files | Lines |
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Make ACPI depend on PM rather than selecting it.
Otherwise it's a nightmare working out why CONFIG_PM keeps getting set.
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Len Brown <len.brown@intel.com>
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Spotted by the Coverity checker.
Signed-off-by: Adrian Bunk <bunk@stusta.de>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Len Brown <len.brown@intel.com>
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Make loading processor.ko fail when an error happens.
Signed-off-by: Akinobu Mita <akinobu.mita@gmail.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Len Brown <len.brown@intel.com>
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Fix single linked list manipulation for sub_driver. If the remving entry
is not on the head of the sub_driver list, it goes into infinate loop.
Though that infinite loop doesn't happen. Because the only user of
acpi_pci_register_dirver() is acpiphp.
Signed-off-by: Akinobu Mita <akinobu.mita@gmail.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Len Brown <len.brown@intel.com>
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Signed-off-by: Adrian Bunk <bunk@stusta.de>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Len Brown <len.brown@intel.com>
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Update the frambuffer drivers to the backlight_device_registers changes.
Signed-off-by: James Simmons <jsimmons@infradead.org>
Cc: Luming Yu <Luming.yu@intel.com>
Cc: "Antonino A. Daplas" <adaplas@pol.net>
Cc: Greg KH <greg@kroah.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Len Brown <len.brown@intel.com>
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This patch set adds generic abstract layer support for acpi video driver to
have generic user interface to control backlight and output switch control by
leveraging the existing backlight sysfs class driver, and by adding a new
video output sysfs class driver.
This patch:
Add dev argument for backlight_device_register to link the class device to
real device object. The platform specific driver should find a way to get the
real device object for their video device.
[akpm@osdl.org: build fix]
[akpm@osdl.org: fix msi-laptop.c]
Signed-off-by: Luming Yu <Luming.yu@intel.com>
Cc: "Antonino A. Daplas" <adaplas@pol.net>
Cc: Greg KH <greg@kroah.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Len Brown <len.brown@intel.com>
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acpi_video_get_next_level was supposed to implement an algorithm to select
a new brightness level based on the old brightness level of an ACPI video
device, but it simply says "/* Fix me */" and returns the current
brightness.
This patch implements acpi_video_get_next_level properly. It had to change
a few constants at the top of the file because they were (apparently)
wrong, but it appears to work on my Dell Inspiron e1405 (with BIOS A05
only--BIOS A04 doesn't seem to send ACPI video hotkey events).
[akpm@osdl.org: cleanups]
Signed-off-by: Thomas Tuttle <linux-kernel@ttuttle.net>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Len Brown <len.brown@intel.com>
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Allow clean removal by setting notify_installed in the right place.
Signed-off-by: Alexey Starikovskiy <alexey.y.starikovskiy@intel.com>
Signed-off-by: Henrique de Moraes Holschuh <hmh@hmh.eng.br>
Signed-off-by: Len Brown <len.brown@intel.com>
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Conflicts:
drivers/acpi/button.c
drivers/acpi/ec.c
drivers/acpi/osl.c
drivers/acpi/sbs.c
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Signed-off-by: Jan Engelhardt <jengelh@gmx.de>
Signed-off-by: Len Brown <len.brown@intel.com>
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Conflicts:
kernel/power/disk.c
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It has been reported that on some systems the functionality after a resume
from disk is limited if the system is simply powered off during the suspend
instead of using the ACPI S4 suspend (aka platform mode).
Unfortunately the default is currently to power off the system during the
suspend so the users of these systems experience problems after the resume
if they don't switch to the platform mode explicitly. This patch makes swsusp
use the platform mode by default to avoid such situations.
Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl>
Acked-by: Stefan Seyfried <seife@suse.de>
Acked-by: Pavel Machek <pavel@ucw.cz>
Signed-off-by: Len Brown <len.brown@intel.com>
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http://bugzilla.kernel.org/show_bug.cgi?id=7303
Use a mutex instead of a spinlock for locking the
hotplug list because we need to call into the ACPI
subsystem which might sleep.
Signed-off-by: Kristen Carlson Accardi <kristen.c.accardi@intel.com>
Signed-off-by: Len Brown <len.brown@intel.com>
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Signed-off-by: Len Brown <len.brown@intel.com>
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Conflicts:
drivers/acpi/ec.c
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I will be taking care of ibm-acpi maintenance for now on, with Borislav's
blessing. Many thanks to Borislav Deianov for writing this driver and for
the many years he took care of it: his efforts made our ThinkPads much nicer
devices to run Linux on, and are very much appreciated.
Signed-off-by: Henrique de Moraes Holschuh <hmh@hmh.eng.br>
Cc: Borislav Deianov <borislav@users.sourceforge.net>
Signed-off-by: Len Brown <len.brown@intel.com>
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Fixing wrong description for acpi_gpe_sleep_prepare().
acpi_gpe_sleep_prepare() had only used on power off and was changed
to also used on entering some sleep state. However its description
isn't changed yet.
Signed-off-by: Satoru Takeuchi <takeuchi_satoru@jp.fujitsu.com>
Signed-off-by: Len Brown <len.brown@intel.com>
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Fix this warning :
drivers/acpi/events/evmisc.c: In function `acpi_ev_global_lock_handler':
drivers/acpi/events/evmisc.c:334: warning: unused variable `status'
Signed-off-by: Jesper Juhl <jesper.juhl@gmail.com>
Signed-off-by: Len Brown <len.brown@intel.com>
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acpi_get_pci_rootbridge_handle() walks the ACPI name space
searching for seg, bus and the PCI_ROOT_HID_STRING --
returning the handle as soon as if find the match.
But the current codes always parses through the whole namespace because
the user_function find_pci_rootbridge() returns status=AE_OK when it finds the match.
Make the find_pci_rootbridge() return AE_CTRL_TERMINATE when it finds the match.
This reduces the ACPI namespace walk for acpi_get_pci_rootbridge_handle().
Signed-off-by: Justin Chen <justin.chen@hp.com>
Signed-off-by: Len Brown <len.brown@intel.com>
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Fix sparse warning:
drivers/acpi/ec.c:372:12: warning: function 'ec_transaction' with external linkage has definition
Signed-off-by: Randy Dunlap <randy.dunlap@oracle.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Len Brown <len.brown@intel.com>
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acpi-cpufreq.c, speedstep-centrino.c: warning: 'sw_any_bug_dmi_table' defined but not used
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Len Brown <len.brown@intel.com>
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- Fixes a build problem with CONFIG_M386=y (include file dependencies get
messy).
- Share the implementation between x86 and x86_64
- These are too big to inline anyway.
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Len Brown <len.brown@intel.com>
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32bit vs 64 bit issues. sizeof(sizeof) and sizeof(pointer) is variable,
but we're trying to print it as unsigned int or u32.
Casts to unsigned long are used because type acpi_thread_id can be any one of
typedef u64 acpi_native_uint;
typedef u32 acpi_native_uint;
typedef u16 acpi_native_uint;
#define acpi_thread_id struct task_struct *
Signed-off-by: Martin J. Bligh <mbligh@google.com>
Acked-by: Jeff Garzik <jeff@garzik.org>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Len Brown <len.brown@intel.com>
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Signed-off-by: Len Brown <len.brown@intel.com>
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Bump up module version, add myself to copyright and MODULE_AUTHOR.
Signed-off-by: Henrique de Moraes Holschuh <hmh@hmh.eng.br>
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This patch just fixes style, move some #defines to enums, and removes some
old cruft.
Signed-off-by: Henrique de Moraes Holschuh <hmh@hmh.eng.br>
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This patch cleans up the recently added backlight device support by Holger
Macht <hmacht@suse.de> to fit well with the rest of the code, using the
ibms struct as the other "subdrivers" in ibm-acpi.
Signed-off-by: Henrique de Moraes Holschuh <hmh@hmh.eng.br>
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This patch makes it possible to disable ibm-acpi non-generic bay support,
as generic bay support already works well for a number of ThinkPads.
Signed-off-by: Henrique de Moraes Holschuh <hmh@hmh.eng.br>
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This patch adds support for the ultrabay on the T60, X60 and other new
ThinkPads that have a SATA ultrabay.
I intend to keep bay and dock support in ibm-acpi working and updated until
it finally gets deprecated and removed in favour of the generic dock and
bay support. But we aren't there yet.
Signed-off-by: Henrique de Moraes Holschuh <hmh@hmh.eng.br>
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This patch implements a fan control safety watchdog, by request of the
authors of userspace fan control scripts.
When the watchdog timer expires, the equivalent action of a "fan enable"
command is executed. The watchdog timer is reset at every reception of a
fan control command that could change the state of the fan itself.
This command is meant to be used by userspace fan control daemons, to make
sure the fan is never left set to an unsafe level because of userspace
problems.
Users of the X31/X40/X41 "speed" command are on their own, the current
implementation of "speed" is just too incomplete to be used safely,
anyway. Better to never use it, and just use the "level" command instead.
The watchdog is programmed using echo "watchdog <number>" > fan, where
number is the number of seconds to wait before doing an "enable", and zero
disables the watchdog.
Signed-off-by: Henrique de Moraes Holschuh <hmh@hmh.eng.br>
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A few ThinkPads fail to initialize EC register 0x2f both in the EC
firmware and ACPI DSDT. If the BIOS and the ACPI DSDT also do not
initialize it, then the initial status of that register does not
correspond to reality.
On all reported buggy machines, EC 0x2f will read 0x07 (fan level 7) upon
cold boot, when the EC is actually in mode 0x80 (auto mode). Since
returning a text string ("unknown") would break a number of userspace
programs, instead we correct the reading for the most probably correct
answer, and return it is in auto mode.
The workaround flags the status and level as unknown on module load/kernel
boot, until we are certain at least one fan control command was issued,
either by us, or by something else.
We don't work around the bug by doing a "fan enable" at module
load/startup (which would initialize the EC register) because it is not
known if these ThinkPad ACPI DSDT might have set the fan to level 7
instead of "auto" (we don't know if they can do this or not) due to a
thermal condition, and we don't want to override that, should they be
capable of it.
We should be setting the workaround flag to "status known" upon resume, as
both reports and a exaustive search on the DSDT tables at acpi.sf.net show
that the DSDTs always enable the fan on resume, thus working around the
bug. But since we don't have suspend/resume handlers in ibm-acpi yet and
the "EC register 0x2f was modified" logic is likely to catch the change
anyway, we don't.
Signed-off-by: Henrique de Moraes Holschuh <hmh@hmh.eng.br>
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This patch changes the ThinkPad Embedded Controller DMI matching
code to store the firmware version of the EC for later usage, e.g.
for quirks.
It also prints the firmware version when starting up.
Signed-off-by: Henrique de Moraes Holschuh <hmh@hmh.eng.br>
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This patch extend fan control functions, implementing enable/disable for
all write access modes, implementing level control for all level-capable
write access modes.
The patch also updates the documentation, explaining levels auto and
disengaged.
ABI changes:
1. Support level 0 as an equivalent to disable
2. Add support for level auto and level disengaged when doing
EC 0x2f fan control
3. Support enable/disable for all level-based write access modes
4. Add support for level command on FANS thinkpads, as per
thinkwiki reports
Signed-off-by: Henrique de Moraes Holschuh <hmh@hmh.eng.br>
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This patch fix fan enable to attempt to do the right thing and not slow
down the fan if it is forced to the maximum speed. It also extends fan
enable to work on older thinkpads.
ABI changes:
1. Support enable/disable for all level-based write access modes
Signed-off-by: Henrique de Moraes Holschuh <hmh@hmh.eng.br>
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This patch fixes fan_read to return correct values for all fan access
modes. It also implements some fan access mode status output that was
missing, and normalizes the proc fan abi to return consistent data across
all fan read/write modes.
Userspace ABI changes and extensions:
1. Return status: enable/disable for *all* modes
(this actually improves compatibility with userspace utils!)
2. Return level: auto and level: disengaged for EC 2f access mode
3. Return level: <number> for EC 0x2f access mode
4. Return level 0 as well as "disabled" in level-aware modes
Signed-off-by: Henrique de Moraes Holschuh <hmh@hmh.eng.br>
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This patch documents the ThinkPad fan control strategies. Source of the
data:
0. ibm-acpi source
1. DSDTs for various ThinkPads (770, X31, X40, X41, T43, A21m, T22)
2. http://thinkwiki.org/wiki/Embedded_Controller_Firmware#Firmware_Issues
3. http://thinkwiki.org/wiki/How_to_control_fan_speed
4. Various threads about windows fan control utilities in thinkpads.com
Signed-off-by: Henrique de Moraes Holschuh <hmh@hmh.eng.br>
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This patch cleans up fan_write so that it is much easier to read and
extend. It separates the proc api handling from the operations themselves.
Signed-off-by: Henrique de Moraes Holschuh <hmh@hmh.eng.br>
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This patch breaks fan_read mechanics into a generic function to get fan
status and speed, and leaves only the procfs interface code in fan_read.
Signed-off-by: Henrique de Moraes Holschuh <hmh@hmh.eng.br>
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This patch cleans up fan_read so that it is much easier to read and
extend.
The patch fixes the userspace ABI to return "status: not supported" (like
all other ibm-acpi functions) when neither fan status or fan control are
possible.
It also fixes the userspace ABI to return EIO if ACPI access to the EC
fails, instead of returning "status: unreadable" or "speed: unreadable".
Signed-off-by: Henrique de Moraes Holschuh <hmh@hmh.eng.br>
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This patch lays some groundwork for a fan_read and fan_write cleanup in the
next patches. To do so, it provides a new fan_init initializer, and also some
constants (through enums).
Signed-off-by: Henrique de Moraes Holschuh <hmh@hmh.eng.br>
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The A31 has a very atypical layout, so I separated its thermal sensors
location in a separate patch.
Signed-off-by: Henrique de Moraes Holschuh <hmh@hmh.eng.br>
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16 sensors
This patch extends ibm-acpi to support reading thermal sensors directly
through ACPI EC register access. It uses a DMI match to detect ThinkPads
with a new-style embedded controller, that are known to have forward-
compatible register maps and use 0x00 to fill in non-used registers and
export thermal sensors at EC offsets 0x78-7F and 0xC0-C7.
Direct ACPI EC register access is implemented for 8-sensor and 16-sensor
new-style ThinkPad controller firmwares as an experimental feature. The
code does some limited sanity checks on the temperatures read through EC
access, and will default to the old ACPI TMP0-7 mode if anything is amiss.
Userspace ABI is not changed for 8 sensors, but /proc/acpi/ibm/thermal is
extended for 16 sensors if the firmware supports 16 sensors.
A documentation update is also provided.
The information about the ThinkPad register map was determined by studying
ibm-acpi "ecdump" output from various ThinkPad models, submitted by
subscribers of the linux-thinkpad mailinglist. Futher information was
gathered from the DSDT tables, as they describe the EC register map in
recent ThinkPads.
DSDT source shows that TMP0-7 access and direct register access are
actually the same thing on these firmwares, but unfortunately IBM never
did update their DSDT EC register map to export TMP8-TMP15 for the second
range of sensors.
Signed-off-by: Henrique de Moraes Holschuh <hmh@hmh.eng.br>
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This patch consolidades all decisions regarding the strategy to be used to
read thinkpad thermal sensors into a single enum, and refactors the
thermal sensor reading code to use a much more readable (and easier to
extend) switch() construct, in a separate function.
Signed-off-by: Henrique de Moraes Holschuh <hmh@hmh.eng.br>
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This patch just makes drives/acpi/ibm-acpi.c Lindent-clean, as requested by
Len Brown.
Signed-off-by: Henrique de Moraes Holschuh <hmh@hmh.eng.br>
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ibm-acpi uses sub-device names like ibm/hotkey, which get in the way of
a sysfs conversion. Fix it to use ibm_hotkey instead. Thanks to Zhang
Rui for noticing this.
Signed-off-by: Henrique de Moraes Holschuh <hmh@hmh.eng.br>
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