linux-toradex.git/drivers/platform, branch tegra-11.2.12

drm/i915, intel_ips: When i915 loads after IPS, make IPS relink to i915.

2011-01-07T21:58:45+00:00

commit 63ee41d794d9c555f84205517a68509848988760 upstream.

The IPS driver is designed to be able to run detached from i915 and
just not enable GPU turbo in that case, in order to avoid module
dependencies between the two drivers.  This means that we don't know
what the load order between the two is going to be, and we had
previously only supported IPS after (optionally) i915, but not i915
after IPS.  If the wrong order was chosen, you'd get no GPU turbo, and
something like half the possible graphics performance.

Signed-off-by: Eric Anholt 
Signed-off-by: Chris Wilson 
Signed-off-by: Greg Kroah-Hartman

wmi: use memcmp instead of strncmp to compare GUIDs

2010-12-09T21:33:26+00:00

commit 8b14d7b22c61f17ccb869e0047d9df6dd9f50a9f upstream.

While looking for the duplicates in /sys/class/wmi/, I couldn't find
them. The code that looks for duplicates uses strncmp in a binary GUID,
which may contain zero bytes. The right function is memcmp, which is
also used in another section of wmi code.

It was finding 49142400-C6A3-40FA-BADB-8A2652834100 as a duplicate of
39142400-C6A3-40FA-BADB-8A2652834100. Since the first byte is the fourth
printed, they were found as equal by strncmp.

Signed-off-by: Thadeu Lima de Souza Cascardo 
Signed-off-by: Matthew Garrett 
Signed-off-by: Greg Kroah-Hartman

asus-laptop: fix gps rfkill

2010-11-22T19:03:15+00:00

commit 23f45c3a76e715217f40ac397c15815c774cad7f upstream.

The GPS rfkill crappy code. The ops_data argument wasn't
set, and was totally misused. The fix have been tested
on an Asus R2H.

Signed-off-by: Corentin Chary 
Signed-off-by: Matthew Garrett 
Signed-off-by: Greg Kroah-Hartman

IPS driver: Fix limit clamping when reducing CPU power

2010-10-05T18:59:35+00:00

Values here are in internal units rather than Watts, so we shouldn't
perform any conversion.

Signed-off-by: Matthew Garrett

[PATCH 2/2] IPS driver: disable CPU turbo

2010-10-05T18:59:28+00:00

The undocumented interface we're using for reading CPU power seems to be
overreporting power.  Until we figure out how to correct it, disable CPU
turbo and power reporting to be safe.  This will keep the CPU within default
limits and still allow us to increase GPU frequency as needed.

Signed-off-by: Jesse Barnes 
Signed-off-by: Matthew Garrett

IPS driver: apply BIOS provided CPU limit if different from default

2010-10-05T18:59:25+00:00

The BIOS may hand us a lower CPU power limit than the default for a
given SKU.  We should use it in case the platform isn't designed to
dissapate the full TDP of a given part.

Signed-off-by: Jesse Barnes 
Signed-off-by: Matthew Garrett

intel_ips -- ensure we do not enable gpu turbo mode without driver linkage

2010-10-05T18:59:21+00:00

Both when polling the current turbo status (in poll_turbo_status mode)
and when handling thermal events (in ips_irq_handler) the current status
of GPU turbo is updated to match the hardware status.  However if during
driver initialisation we were unable aquire linkage to the i915 driver
enabling GPU turbo will lead to an oops on the first attempt to determine
GPU busy status.

Ensure that we do not enable GPU turbo unless we have driver linkage.

BugLink: http://bugs.launchpad.net/bugs/632430
Cc: stable@kernel.org
Signed-off-by: Andy Whitcroft 
Signed-off-by: Matthew Garrett

intel_ips: Print MCP limit exceeded values.

2010-10-05T18:59:17+00:00

Print some interesting values when MCP limits
are exceeded.

Signed-off-by: Tim Gardner 
Cc: Matthew Garrett 
Signed-off-by: Matthew Garrett

IPS driver: verify BIOS provided limits

2010-10-05T18:59:14+00:00

They're optional.  If not present or sane, we should use the CPU
defaults.

Signed-off-by: Jesse Barnes 
Signed-off-by: Matthew Garrett

IPS driver: don't toggle CPU turbo on unsupported CPUs

2010-10-05T18:59:09+00:00

If the CPU doesn't support turbo, don't try to enable/disable it.

http://bugzilla.kernel.org/show_bug.cgi?id=18742

Signed-off-by: Jesse Barnes 
Signed-off-by: Matthew Garrett