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112 Commits

Author SHA1 Message Date
Alexey Starikovskiy c04209a794 ACPI: EC: Enable boot EC before bus_scan 
Some _STA methods called during bus_scan() might require EC region handler,
which might be enabled later in the scan.
Enable it explicitly before scan to avoid errors.

Reference: http://bugzilla.kernel.org/show_bug.cgi?id=9627

Signed-off-by: Alexey Starikovskiy <astarikovskiy@suse.de>
Signed-off-by: Len Brown <len.brown@intel.com>
 2008-01-01 14:12:55 -05:00
Len Brown a3f095ade0 Pull bugzilla-9327 into release branch 
Conflicts:

	drivers/acpi/ec.c

Signed-off-by: Len Brown <len.brown@intel.com>
 2007-11-20 20:07:49 -05:00
Alexey Starikovskiy e790cc8bbb ACPI: EC: Workaround for optimized controllers (version 3) 
Some controllers fail to send confirmation GPE after address or data write.
Detect this and don't expect such confirmation in future.
This is a generalization of previous workaround
(66c5f4e736), which did only read address.

Reference: http://bugzilla.kernel.org/show_bug.cgi?id=9327

Signed-off-by: Alexey Starikovskiy <astarikovskiy@suse.de>
Tested-by: Romano Giannetti <romano.giannetti@gmail.com>
Tested-by: Mats Johannesson
Signed-off-by: Len Brown <len.brown@intel.com>
 2007-11-20 20:06:15 -05:00
Márton Németh 3ebe08a749 ACPI: EC: use printk_ratelimit(), add some DEBUG mode messages 
Sometimes it is usefull to see raw protocol dump.
Uncomment '#define DEBUG' at the beginning of file to make EC
really verbose.

Signed-off-by: Márton Németh <nm127@freemail.hu>
Signed-off-by: Alexey Starikovskiy <astarikovskiy@suse.de>
Signed-off-by: Len Brown <len.brown@intel.com>
 2007-11-20 20:04:39 -05:00
Len Brown 0af2f653c5 Revert "ACPI: EC: Workaround for optimized controllers" 
This reverts commit f2d68935ba.
 2007-11-20 19:59:08 -05:00
Len Brown e6532b8883 Pull fluff into release branch 
Conflicts:

	drivers/acpi/ec.c

Signed-off-by: Len Brown <len.brown@intel.com>
 2007-11-20 01:21:47 -05:00
Len Brown 22201f7402 Pull bugzilla-9327 into release branch 2007-11-20 01:18:19 -05:00
Joe Perches 4fdb2a05ef ACPI: Add missing spaces to printk format 
Signed-off-by: Joe Perches <joe@perches.com>
Signed-off-by: Len Brown <len.brown@intel.com>
 2007-11-19 21:53:32 -05:00
Alexey Starikovskiy 5870a8cd23 ACPI: EC: Don't init EC early if it has no _INI 
Option to init EC early inserted to handle #8598 ASUS problem,
introduced several others.

EC driver in this particular case has fake _INI method, not present on
other machines, which don't need or break from this workaround, so lets use
its presence as a flag for early init.

http://bugzilla.kernel.org/show_bug.cgi?id=9262
http://bugzilla.kernel.org/show_bug.cgi?id=8598
https://bugzilla.novell.com/show_bug.cgi?id=334806

Signed-off-by: Alexey Starikovskiy <astarikovskiy@suse.de>
Signed-off-by: Len Brown <len.brown@intel.com>
 2007-11-19 12:20:48 -05:00
Alexey Starikovskiy f2d68935ba ACPI: EC: Workaround for optimized controllers 
Some controllers fail to send confirmation GPE after address write.
Detect this and don't expect such confirmation in future.
This is a generalization of previous workaround
(66c5f4e736), which did only read address.

http://bugzilla.kernel.org/show_bug.cgi?id=9327

Signed-off-by: Alexey Starikovskiy <astarikovskiy@suse.de>
Tested-by: Romano Giannetti <romano.giannetti@gmail.com>
Signed-off-by: Len Brown <len.brown@intel.com>
 2007-11-19 01:05:01 -05:00
Adrian Bunk 1544fdbc85 ACPI: EC: fix use-after-free 
This patch fixes a use-after-free introduced by
commit 30c08574da
(ACPI: EC: Add new query handler to list head)

Spotted by the Coverity checker.

Signed-off-by: Adrian Bunk <bunk@kernel.org>
Acked-by: Alexey Starikovskiy <astarikovskiy@suse.de>
Signed-off-by: Len Brown <len.brown@intel.com>
 2007-10-25 16:38:02 -04:00
Alexey Starikovskiy 95b937e3f5 ACPI: EC: Output changes to operational mode 
Insert printk() for every change in operational mode.

Signed-off-by: Alexey Starikovskiy <astarikovskiy@suse.de>
Acked-by: Rafael J. Wysocki <rjw@sisk.pl>
Signed-off-by: Len Brown <len.brown@intel.com>
 2007-10-25 16:31:31 -04:00
Alexey Starikovskiy 66c5f4e736 ACPI: EC: Add workaround for "optimized" controllers 
Some controllers do not send interrupts for OBF=1 event, but send
them for IBF=0. Add workaround for them.

Reference: http://bugzilla.kernel.org/show_bug.cgi?id=8459

Signed-off-by: Alexey Starikovskiy <astarikovskiy@suse.de>
Signed-off-by: Len Brown <len.brown@intel.com>
 2007-10-25 16:31:31 -04:00
Alexey Starikovskiy 1c55053c21 ACPI: EC: Don't re-enable GPE for each transaction. 
With the auto selection of operation mode, absence of GPEs does not
really degrade performance, so let PM code to handle
enabling/disabling GPEs.
This is a revert of 5d57a6a55e,
which was meant to be temporary.

Reference: http://bugzilla.kernel.org/show_bug.cgi?id=7977

Signed-off-by: Alexey Starikovskiy <astarikovskiy@suse.de>
Acked-by: Rafael J. Wysocki <rjw@sisk.pl>
Signed-off-by: Len Brown <len.brown@intel.com>
 2007-10-25 16:31:31 -04:00
Alexey Starikovskiy 7843932ac4 ACPI: EC: auto select interrupt mode 
Start in POLL mode, and if we receive confirmation GPE,
switch to INT mode.
If confirmations are not sent, switch back to POLL.

Signed-off-by: Alexey Starikovskiy <astarikovskiy@suse.de>
Signed-off-by: Len Brown <len.brown@intel.com>
 2007-10-25 16:31:31 -04:00
Alexey Starikovskiy 0c5d31f48e ACPI: EC: Don't expect interrupt after last read 
There is no interrupt after last read according to spec, so
don't set bit that we are expecting one.

Signed-off-by: Alexey Starikovskiy <astarikovskiy@suse.de>
Signed-off-by: Len Brown <len.brown@intel.com>
 2007-10-25 16:31:31 -04:00
Alexey Starikovskiy 080e412cc0 ACPI: EC: Replace atomic variables with bits 
Number of flags is about to be increased, so it is better to
put them all into bits.
No functional changes.

Signed-off-by: Alexey Starikovskiy <astarikovskiy@suse.de>
Acked-by: Rafael J. Wysocki <rjw@sisk.pl>
Signed-off-by: Len Brown <len.brown@intel.com>
 2007-10-25 16:31:31 -04:00
Len Brown 731aa5fd99 Pull bugzilla-8709 into release branch 2007-10-10 00:30:55 -04:00
Alexey Starikovskiy 30c08574da ACPI: EC: Add new query handler to list head. 
Signed-off-by: Alexey Starikovskiy <astarikovskiy@suse.de>
Signed-off-by: Len Brown <len.brown@intel.com>
 2007-09-27 15:50:22 -04:00
Alexey Starikovskiy 4c61106066 ACPI: EC: Drop ECDT-based boot_ec as soon as we find DSDT-based one. 
ASUS notebooks have numerous problems with EC initialization
This patch tries to work around three known issues reported
in bugzilla 8598, 8709 and 8909/8919.

Signed-off-by: Alexey Starikovskiy <astarikovskiy@suse.de>
Signed-off-by: Len Brown <len.brown@intel.com>
 2007-09-05 19:56:38 -04:00
Alexey Starikovskiy 2d8348b429 ACPI: EC: Check if boot_ec was really found in DSDT 
acpi_get_devices() returns success if it did not find any device.
We have to check for this case.

Signed-off-by: Alexey Starikovskiy <astarikovskiy@suse.de>
Tested-by: Daniel Ritz <daniel.ritz-ml@swissonline.ch>
Tested-by: Luca <kronos.it@gmail.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
 2007-08-30 22:20:13 -07:00
Alexey Starikovskiy f9319f903f ACPI: EC: revert fix for bugzilla 8709 
This is a manual revert of 7c010de750,
a fix that broke another ASUS in 8909 and 8919.

Signed-off-by: Alexey Starikovskiy <astarikovskiy@suse.de>
Signed-off-by: Len Brown <len.brown@intel.com>
 2007-08-24 00:30:59 -04:00
Alexey Starikovskiy c019b19330 ACPI: EC: Fix "no battery" regression 
Restore deleted call to register query methods.

http://bugzilla.kernel.org/show_bug.cgi?id=8886

Signed-off-by: Alexey Starikovskiy <astarikovskiy@suse.de>
Signed-off-by: Len Brown <len.brown@intel.com>
 2007-08-14 01:03:42 -04:00
Alexey Starikovskiy 199e9e7d11 ACPI EC: remove potential deadlock from EC 
Signed-off-by: Alexey Starikovskiy <astarikovskiy@suse.de>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Len Brown <len.brown@intel.com>
 2007-08-11 22:26:24 -04:00
Meelis Roos 0a52450998 ACPI: EC: fix run-together printk lines 
Signed-off-by: Meelis Roos <mroos@linux.ee>
Signed-off-by: Len Brown <len.brown@intel.com>
 2007-08-03 22:42:02 -04:00