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path: root/drivers/acpi/ec.c
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2007-03-09ACPI: ec: fix race in status register accessAlexey Starikovskiy
Delay the read of the EC status register until after the event that caused it occurs -- otherwise it is possible to read and act on stale status that was associated with the previous event. Do this with a perpetually incrementing "event_count" to detect when a new event occurs and it is safe to read status. There is no workaround for polling mode -- it is inherently exposed to reading and acting on stale status, since it doesn't have an interrupt to tell it the event completed. http://bugzilla.kernel.org/show_bug.cgi?id=8110 Signed-off-by: Alexey Starikovskiy <alexey.y.starikovskiy@intel.com> Signed-off-by: Len Brown <len.brown@intel.com>
2007-02-16Pull fluff into release branchLen Brown
Conflicts: arch/x86_64/pci/mmconfig.c drivers/acpi/bay.c Signed-off-by: Len Brown <len.brown@intel.com>
2007-02-16ACPI: ec: add unlock in error pathAlexey Starikovskiy
Signed-off-by: Alexey Starikovskiy <alexey.y.starikovskiy@linux.intel.com> Signed-off-by: Len Brown <len.brown@intel.com>
2007-02-12ACPI: delete extra #defines in /drivers/acpi/ driversLen Brown
Cosmetic only. Except in a single case, #define ACPI_*_DRIVER_NAME were invoked 0 or 1 times. Signed-off-by: Len Brown <len.brown@intel.com>
2007-02-12ACPI: fix acpi_driver.name usageLen Brown
It was erroneously used as a description rather than a name. ie. turn this: lenb@se7525gp2:/sys> ls bus/acpi/drivers ACPI AC Adapter Driver ACPI Embedded Controller Driver ACPI Power Resource Driver ACPI Battery Driver ACPI Fan Driver ACPI Processor Driver ACPI Button Driver ACPI PCI Interrupt Link Driver ACPI Thermal Zone Driver ACPI container driver ACPI PCI Root Bridge Driver hpet into this: lenb@se7525gp2:~> ls /sys/bus/acpi/drivers ac battery button container ec fan hpet pci_link pci_root power processor thermal Signed-off-by: Len Brown <len.brown@intel.com>
2007-02-12ACPI: clean up ACPI_MODULE_NAME() useLen Brown
cosmetic only Make "module name" actually match the file name. Invoke with ';' as leaving it off confuses Lindent and gcc doesn't care. Fix indentation where Lindent did get confused. Signed-off-by: Len Brown <len.brown@intel.com>
2007-02-02ACPICA: Remove duplicate table definitions (non-conflicting), contAlexey Starikovskiy
Signed-off-by: Len Brown <len.brown@intel.com>
2007-02-02ACPICA: Remove duplicate table definitions.Alexey Starikovskiy
Signed-off-by: Len Brown <len.brown@intel.com>
2007-02-02ACPICA: minimal patch to integrate new tables into LinuxAlexey Starikovskiy
Signed-off-by: Len Brown <len.brown@intel.com>
2007-01-06ACPI: ec: enable printk on cmdline useLen Brown
if somebody uses "ec_intr=", lets be sure to capture that in the dmesg even in the non-debug case. Signed-off-by: Len Brown <len.brown@intel.com>
2007-01-02ACPI: EC: move verbose printk to debug build onlyGuillaume Chazarain
The recent EC cleanup left a printk enabled on handler evaluation resulting in a bunch of messages on normal operation, like so: ACPI: EC: evaluating _Q60 Signed-off-by: Len Brown <len.brown@intel.com>
2006-12-20ACPI: replace kmalloc+memset with kzallocBurman Yan
Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Len Brown <len.brown@intel.com>
2006-12-20Pull ec into test branchLen Brown
2006-12-20ACPI: make drivers/acpi/ec.c:ec_ecdt staticAdrian Bunk
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>
2006-12-16Pull trivial into test branchLen Brown
Conflicts: drivers/acpi/ec.c
2006-12-08ACPI: ec: Lindent once againAlexey Starikovskiy
Signed-off-by: Len Brown <len.brown@intel.com>
2006-12-08ACPI: ec: Change #define to enums there possible.Alexey Starikovskiy
Signed-off-by: Len Brown <len.brown@intel.com>
2006-12-08ACPI: ec: Style changes.Alexey Starikovskiy
Signed-off-by: Len Brown <len.brown@intel.com>
2006-12-08ACPI: ec: Acquire Global Lock under EC mutex.Alexey Starikovskiy
Signed-off-by: Len Brown <len.brown@intel.com>
2006-12-08ACPI: ec: Drop udelay() from poll mode. Loop by reading status field instead.Alexey Starikovskiy
Signed-off-by: Len Brown <len.brown@intel.com>
2006-12-08ACPI: ec: Rename gpe_bit to gpeAlexey Starikovskiy
Signed-off-by: Len Brown <len.brown@intel.com>
2006-12-08ACPI: ec: Change semaphore to mutex.Alexey Starikovskiy
Signed-off-by: Len Brown <len.brown@intel.com>
2006-12-08ACPI: ec: Query only single query at a time.Alexey Starikovskiy
Signed-off-by: Len Brown <len.brown@intel.com>
2006-12-08ACPI: ec: Remove calls to clear_gpe() and enable_gpe(), as these are handled atAlexey Starikovskiy
dispatch_gpe() level. Signed-off-by: Len Brown <len.brown@intel.com>
2006-12-08ACPI: ec: Remove expect_event and all races around it.Alexey Starikovskiy
Signed-off-by: Len Brown <len.brown@intel.com>
2006-12-08ACPI: ec: Read status register from check_status() functionAlexey Starikovskiy
Signed-off-by: Len Brown <len.brown@intel.com>
2006-12-08ACPI: ec: Increase timeout from 50 to 500 ms to handle old slow machines.Alexey Starikovskiy
http://bugzilla.kernel.org/show_bug.cgi?id=7466 Signed-off-by: Len Brown <len.brown@intel.com>
2006-12-08ACPI: ec: Enable EC GPE at beginning of transactionAlexey Starikovskiy
Temporary measure until resume sequence is right. Signed-off-by: Len Brown <len.brown@intel.com>
2006-12-08ACPI: ec: Allow for write semantics in any command.Alexey Starikovskiy
Check for transaction attributes, not command index to decide on event to expect. Signed-off-by: Len Brown <len.brown@intel.com>
2006-10-27ACPI: make ec_transaction not externRandy Dunlap
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>
2006-10-14ACPI: EC: export ec_transaction() for msi-laptop driverLennart Poettering
Signed-off-by: Lennart Poettering <mzxreary@0pointer.de> Signed-off-by: Len Brown <len.brown@intel.com>
2006-10-14ACPI: EC: Simplify acpi_hw_low_level*() with inb()/outb().Denis M. Sadykov
Simplify acpi_hw_low_level_xxx() functions to inb() and outb(). Signed-off-by: Alexey Y. Starikovskiy <alexey.y.starikovskiy@intel.com> Signed-off-by: Len Brown <len.brown@intel.com>
2006-10-14ACPI: EC: Unify poll and interrupt gpe handlersDenis M. Sadykov
Signed-off-by: Alexey Y. Starikovskiy <alexey.y.starikovskiy@intel.com> Signed-off-by: Len Brown <len.brown@intel.com>
2006-10-14ACPI: EC: Unify poll and interrupt mode transaction functionsDenis M. Sadykov
Signed-off-by: Alexey Y. Starikovskiy <alexey.y.starikovskiy@intel.com> Signed-off-by: Len Brown <len.brown@intel.com>
2006-10-14ACPI: EC: Remove unused variables and duplicated codeDenis M. Sadykov
Signed-off-by: Alexey Y. Starikovskiy <alexey.y.starikovskiy@intel.com> Signed-off-by: Len Brown <len.brown@intel.com>
2006-10-14ACPI: EC: Remove unnecessary delay added by previous transation patch.Denis M. Sadykov
Remove unnecessary delay (50 ms) while reading data from EC in interrupt mode. Signed-off-by: Alexey Y. Starikovskiy <alexey.y.starikovskiy@intel.com> Signed-off-by: Len Brown <len.brown@intel.com>
2006-10-14ACPI: consolidate functions in acpi ec driverLennart Poettering
Unify the following functions: acpi_ec_poll_read() acpi_ec_poll_write() acpi_ec_poll_query() acpi_ec_intr_read() acpi_ec_intr_write() acpi_ec_intr_query() into: acpi_ec_poll_transaction() acpi_ec_intr_transaction() These new functions take as arguments an ACPI EC command, a few bytes to write to the EC data register and a buffer for a few bytes to read from the EC data register. The old _read(), _write(), _query() are just special cases of these functions. Then unified the code in acpi_ec_poll_transaction() and acpi_ec_intr_transaction() a little more. Both functions are now just wrappers around the new acpi_ec_transaction_unlocked() function. The latter contains the EC access logic, the two original function now just do their special way of locking and call the the new function for the actual work. This saves a lot of very similar code. The primary reason for doing this, however, is that my driver for MSI 270 laptops needs to issue some non-standard EC commands in a safe way. Due to this I added a new exported function similar to ec_write()/ec_write() which is called ec_transaction() and is essentially just a wrapper around acpi_ec_{poll,intr}_transaction(). Signed-off-by: Lennart Poettering <mzxreary@0pointer.de> Acked-by: Luming Yu <luming.yu@intel.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Len Brown <len.brown@intel.com>
2006-07-10ACPI: add 'const' to several ACPI file_operationsArjan van de Ven
Signed-off-by: Arjan van de Ven <arjan@linux.intel.com> Signed-off-by: Len Brown <len.brown@intel.com>
2006-06-28ACPI: fix battery on HP NX6125Vladimir Lebedev
EC problem was cause of both battery and AC issues. http://bugzilla.kernel.org/show_bug.cgi?id=6455 Signed-off-by: Len Brown <len.brown@intel.com>
2006-06-27ACPI: delete tracing macros from drivers/acpi/*.cPatrick Mochel
Signed-off-by: Len Brown <len.brown@intel.com>
2006-06-27ACPI: un-export ACPI_ERROR() -- use printk(KERN_ERR...)Len Brown
Signed-off-by: Len Brown <len.brown@intel.com>
2006-06-26ACPI: Enable ACPI error messages w/o CONFIG_ACPI_DEBUGThomas Renninger
Signed-off-by: Thomas Renninger <trenn@suse.de> Signed-off-by: Len Brown <len.brown@intel.com>
2006-06-15Pull bugzilla-5764 into release branchLen Brown
2006-06-15Pull ec into release branchLen Brown
2006-06-15Pull acpica into release branchLen Brown
2006-06-14ACPI: execute Notify() handlers on new threadAlexey Starikovskiy
http://bugzilla.kernel.org/show_bug.cgi?id=5534 Thanks to Peter Wainwright for isolating the issue. Thanks to Andi Kleen and Bob Moore for feedback. Thanks to Richard Mace and others for testing. Updates by Konstantin Karasyov. Signed-off-by: Konstantin Karasyov <konstantin.a.karasyov@intel.com> Signed-off-by: Len Brown <len.brown@intel.com>
2006-05-19ACPI: replace spin_lock_irq with mutex for ec poll modeRich Townsend
http://bugzilla.kernel.org/show_bug.cgi?id=5764 Signed-off-by: Luming Yu <luming.yu@intel.com> Signed-off-by: Len Brown <len.brown@intel.com>
2006-04-01ACPI: EC acpi-ecdt-uid-hackJiri Slaby
On some boxes ecdt uid may be equal to 0, so do not test for uids equality, so that fake handler will be unconditionally removed to allow loading the real one. See http://bugzilla.kernel.org/show_bug.cgi?id=6111 Signed-off-by: Jiri Slaby <jirislaby@gmail.com> Cc: Luming Yu <luming.yu@intel.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Len Brown <len.brown@intel.com>
2006-03-31[PATCH] Don't pass boot parameters to argv_init[]OGAWA Hirofumi
The boot cmdline is parsed in parse_early_param() and parse_args(,unknown_bootoption). And __setup() is used in obsolete_checksetup(). start_kernel() -> parse_args() -> unknown_bootoption() -> obsolete_checksetup() If __setup()'s callback (->setup_func()) returns 1 in obsolete_checksetup(), obsolete_checksetup() thinks a parameter was handled. If ->setup_func() returns 0, obsolete_checksetup() tries other ->setup_func(). If all ->setup_func() that matched a parameter returns 0, a parameter is seted to argv_init[]. Then, when runing /sbin/init or init=app, argv_init[] is passed to the app. If the app doesn't ignore those arguments, it will warning and exit. This patch fixes a wrong usage of it, however fixes obvious one only. Signed-off-by: OGAWA Hirofumi <hirofumi@mail.parknet.co.jp> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-01-24[ACPI] merge 3549 4320 4485 4588 4980 5483 5651 acpica asus fops pnpacpi ↵Len Brown
branches into release Signed-off-by: Len Brown <len.brown@intel.com>
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