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16663a87ad
linux/drivers/acpi
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Henrique de Moraes Holschuh 16663a87ad ACPI: ibm-acpi: implement fan watchdog command 
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>
2006-12-07 01:38:44 -05:00
..
dispatcher ACPI: ACPICA 20060707 2006-07-09 15:15:40 -04:00
events Pull bugzilla-5534 into test branch 2006-10-14 02:26:42 -04:00
executer Pull acpica-20060707 into test branch 2006-07-10 02:39:41 -04:00
hardware ACPI: Allow setting SCI_EN bit in PM1_CONTROL register 2006-10-10 17:14:44 -07:00
namespace ACPI: ACPICA 20060707 2006-07-09 15:15:40 -04:00
parser ACPI: acpi_os_allocate() fixes 2006-07-10 02:37:22 -04:00
resources ACPI: ACPICA 20060526 2006-06-14 02:44:35 -04:00
sleep ACPI: add 'const' to several ACPI file_operations 2006-07-10 00:04:29 -04:00
tables ACPI: fix printk format warnings 2006-10-14 01:59:46 -04:00
utilities Pull acpi_os_allocate into test branch 2006-07-10 02:39:47 -04:00
ac.c ACPI: fix boot with acpi=off 2006-08-15 23:16:43 -04:00
acpi_memhotplug.c [PATCH] acpi memory hotplug: remove strange add_memory fail message 2006-10-20 10:26:38 -07:00
asus_acpi.c ACPI: asus_acpi: Add support for the generic backlight device 2006-10-21 01:36:00 -04:00
battery.c ACPI: check battery status on resume for un/plug events during sleep 2006-10-14 02:22:51 -04:00
blacklist.c [PATCH] x86_64: Clean up and tweak ACPI blacklist year code 2006-03-25 09:10:54 -08:00
bus.c ACPI: add message if firmware_register() init fails 2006-08-15 23:27:38 -04:00
button.c ACPI: add 'const' to several ACPI file_operations 2006-07-10 00:04:29 -04:00
cm_sbs.c [PATCH] acpi NULL noise removal 2006-10-10 15:37:22 -07:00
container.c ACPI: delete acpi_os_free(), use kfree() directly 2006-06-30 03:19:10 -04:00
debug.c ACPI: delete tracing macros from drivers/acpi/*.c 2006-06-27 00:41:40 -04:00
dock.c PCI: docking station: remove dock uevents 2006-08-03 13:20:06 -07:00
ec.c ACPI: EC: export ec_transaction() for msi-laptop driver 2006-10-14 00:49:56 -04:00
event.c ACPI: add 'const' to several ACPI file_operations 2006-07-10 00:04:29 -04:00
fan.c ACPI: add 'const' to several ACPI file_operations 2006-07-10 00:04:29 -04:00
glue.c ACPI: delete acpi_os_free(), use kfree() directly 2006-06-30 03:19:10 -04:00
hotkey.c ACPI: hotkey.c fixes, fix for potential crash of hotkey.c 2006-08-16 18:08:06 -04:00
i2c_ec.c i2c: Constify i2c_algorithm declarations, part 2 2006-09-26 15:38:52 -07:00
i2c_ec.h ACPI: add support for Smart Battery 2006-07-01 16:36:14 -04:00
ibm_acpi.c ACPI: ibm-acpi: implement fan watchdog command 2006-12-07 01:38:44 -05:00
Kconfig ACPI: toshiba_acpi: Add support for the generic backlight device 2006-10-21 01:37:28 -04:00
Makefile Revert "Revert "ACPI: dock driver"" 2006-07-09 17:22:28 -04:00
motherboard.c ACPI: update comments in motherboard.c 2006-10-14 01:56:27 -04:00
numa.c ACPI: remove function tracing macros from drivers/acpi/*.c 2006-07-01 16:48:23 -04:00
osl.c ACPI: created a dedicated workqueue for notify() execution 2006-10-14 01:50:10 -04:00
pci_bind.c ACPI: delete tracing macros from drivers/acpi/*.c 2006-06-27 00:41:40 -04:00
pci_irq.c Merge git://git.kernel.org/pub/scm/linux/kernel/git/bunk/trivial 2006-06-30 15:39:30 -07:00
pci_link.c ACPI: acpi_pci_link_set() can allocate with either GFP_ATOMIC or GFP_KERNEL 2006-10-14 01:54:21 -04:00
pci_root.c ACPI: pci_root: Remove unneeded acpi_handle from driver. 2006-06-30 02:51:34 -04:00
power.c ACPI: fix potential OOPS in power driver with CONFIG_ACPI_DEBUG 2006-10-14 01:54:21 -04:00
processor_core.c ACPI: fix section for CPU init functions 2006-10-14 01:58:38 -04:00
processor_idle.c [PATCH] fix "ACPI: Processor native C-states using MWAIT" 2006-10-20 10:26:37 -07:00
processor_perflib.c ACPI: delete acpi_os_free(), use kfree() directly 2006-06-30 03:19:10 -04:00
processor_thermal.c ACPI: delete tracing macros from drivers/acpi/*.c 2006-06-27 00:41:40 -04:00
processor_throttling.c ACPI: delete tracing macros from drivers/acpi/*.c 2006-06-27 00:41:40 -04:00
sbs.c ACPI: sbs: fix module_param() initializers 2006-10-14 00:34:00 -04:00
scan.c ACPI: verbose on kset/kobject_register errors 2006-08-15 23:32:24 -04:00
system.c ACPI: add 'const' to several ACPI file_operations 2006-07-10 00:04:29 -04:00
tables.c Remove obsolete #include <linux/config.h> 2006-06-30 19:25:36 +02:00
thermal.c Merge branch 'release' of git://git.kernel.org/pub/scm/linux/kernel/git/lenb/linux-acpi-2.6 2006-07-10 15:14:38 -07:00
toshiba_acpi.c ACPI: toshiba_acpi: Add support for the generic backlight device 2006-10-21 01:37:28 -04:00
utils.c ACPI: avoid irqrouter_resume might_sleep oops on resume from S4 2006-08-16 19:23:00 -04:00
video.c Pull acpi_device_handle_cleanup into release branch 2006-07-01 17:19:34 -04:00