Commit Graph

13 Commits

Author SHA1 Message Date
Aaro Koskinen 4bb2971134 powerpc/windfarm: Fix overtemperature clearing
With pm81/pm91/pm121, when the overtemperature state is entered, and
when it remains on after skipped ticks, the driver will try to leave
it too soon (immediately on the next tick). This is because the active
FAILURE_OVERTEMP state is not visible in "new_failure" variable of the
current tick. Furthermore, the driver will keep trying to clear condition
in subsequent ticks as FAILURE_OVERTEMP remains set in the "last_failure"
variable. These will start to trigger WARNINGS from windfarm core:

[  100.082735] windfarm: Clamping CPU frequency to minimum !
[  100.108132] windfarm: Overtemp condition detected !
[  101.952908] windfarm: Overtemp condition cleared !
[...]
[  102.980388] WARNING: at drivers/macintosh/windfarm_core.c:463
[...]
[  103.982227] WARNING: at drivers/macintosh/windfarm_core.c:463
[...]
[  105.030494] WARNING: at drivers/macintosh/windfarm_core.c:463
[...]
[  105.973666] WARNING: at drivers/macintosh/windfarm_core.c:463
[...]
[  106.977913] WARNING: at drivers/macintosh/windfarm_core.c:463

Fix by adding a helper global variable. We leave the overtemp state only
after all failure bits have been cleared.

I saw this error on iMac G5 iSight (pm121). Also pm81/pm91 are fixed
based on the observation that these are almost identical/copy-pasted code.

Signed-off-by: Aaro Koskinen <aaro.koskinen@iki.fi>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
2013-07-01 11:10:34 +10:00
Greg Kroah-Hartman 1da42fb6bf Drivers: macintosh: remove __dev* attributes.
CONFIG_HOTPLUG is going away as an option.  As a result, the __dev*
markings need to be removed.

This change removes the use of __devinit, __devexit_p, __devinitconst,
and __devexit from these drivers.

Based on patches originally written by Bill Pemberton, but redone by me
in order to handle some of the coding style issues better, by hand.

Cc: Bill Pemberton <wfp5p@virginia.edu>
Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2013-01-03 15:57:14 -08:00
Stephen Rothwell ca7d593e0a powerpc/windfarm: fix compiler warning
Fixes this warning:

drivers/macintosh/windfarm_pm91.c: In function 'wf_smu_cpu_fans_tick':
drivers/macintosh/windfarm_pm91.c:237:2: warning: passing argument 1 of 'wf_sensor_get' from incompatible pointer type
drivers/macintosh/windfarm.h:124:19: note: expected 'struct wf_sensor *' but argument is of type 'struct wf_sensor **'

Introduced by commit 33e6820b76 ("powerpc/windfarm: Add useful
accessors").

Signed-off-by: Stephen Rothwell <sfr@canb.auug.org.au>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
2012-05-03 16:54:53 +10:00
Benjamin Herrenschmidt 33e6820b76 powerpc/windfarm: Add useful accessors
Makes the code more readable

Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
2012-04-30 15:37:20 +10:00
David Howells 9ffc93f203 Remove all #inclusions of asm/system.h
Remove all #inclusions of asm/system.h preparatory to splitting and killing
it.  Performed with the following command:

perl -p -i -e 's!^#\s*include\s*<asm/system[.]h>.*\n!!' `grep -Irl '^#\s*include\s*<asm/system[.]h>' *`

Signed-off-by: David Howells <dhowells@redhat.com>
2012-03-28 18:30:03 +01:00
Julia Lawall ab30f78c0a powerpc/pmac/windfarm: Correct potential double free
The conditionals were testing different values, but then all freeing the
same one, which could result in a double free.

A simplified version of the semantic match that finds this problem is as
follows: (http://coccinelle.lip6.fr/)

// <smpl>
@@
expression x,e;
identifier f;
iterator I;
statement S;
@@

*kfree(x);
... when != &x
    when != x = e
    when != I(x,...) S
*x
// </smpl>

Signed-off-by: Julia Lawall <julia@diku.dk>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
2010-04-07 18:00:40 +10:00
Grant Likely 71a157e8ed of: add 'of_' prefix to machine_is_compatible()
machine is compatible is an OF-specific call.  It should have
the of_ prefix to protect the global namespace.

Signed-off-by: Grant Likely <grant.likely@secretlab.ca>
Acked-by: Michal Simek <monstr@monstr.eu>
2010-02-09 08:33:00 -07:00
Kay Sievers 23386fe572 [POWERPC] macintosh/windfarm: Fix platform driver hotplug/coldplug
Since 43cc71eed1, the platform modalias
is prefixed with "platform:".  Add MODULE_ALIAS() to the hotpluggable
"macintosh" platform drivers, to re-enable auto loading.

[dbrownell@users.sourceforge.net: registration fixes]
Signed-off-by: Kay Sievers <kay.sievers@vrfy.org>
Signed-off-by: David Brownell <dbrownell@users.sourceforge.net>
Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Paul Mackerras <paulus@samba.org>
2008-04-24 20:56:52 +10:00
Benjamin Herrenschmidt d31e817183 [PATCH] powerpc: windfarm shall request it's sub modules
The windfarm code, in it's current incarnation, uses request_module() to
load the various submodules it needs for a given platform so that only
the main platform control module needs to be modprobed. However, it was
missing various bits. This fixes it. In the future, we'll use some
hotplug mecanisms to try to get all of this auto-loaded on the platforms
where it matters but that isn't ready yet.

Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-11-15 19:57:12 -08:00
Benjamin Herrenschmidt 10270613fb [POWERPC] Fix windfarm platform device usage
The windfarm code uses a struct device_driver instead of
platform_driver, which can cause crashes if any of the callbacks are
called (like on module removal). This fixes it.

Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: Paul Mackerras <paulus@samba.org>
2006-10-10 13:56:13 +10:00
Jeremy Kerr 018a3d1db7 [POWERPC] powermac: Constify & voidify get_property()
Now that get_property() returns a void *, there's no need to cast its
return value. Also, treat the return value as const, so we can
constify get_property later.

powermac platform & macintosh driver changes.

Built for pmac32_defconfig, g5_defconfig

Signed-off-by: Jeremy Kerr <jk@ozlabs.org>
Signed-off-by: Paul Mackerras <paulus@samba.org>
2006-07-31 15:55:05 +10:00
Benjamin Herrenschmidt ac171c4666 [PATCH] powerpc: Thermal control for dual core G5s
This patch adds a windfarm module, windfarm_pm112, for the dual core G5s
(both 2 and 4 core models), keeping the machine from getting into
vacuum-cleaner mode ;) For proper credits, the patch was initially
written by Paul Mackerras, and slightly reworked by me to add overtemp
handling among others. The patch also removes the sysfs attributes from
windfarm_pm81 and windfarm_pm91 and instead adds code to the windfarm
core to automagically expose attributes for sensor & controls.

Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-02-07 22:05:14 -08:00
Benjamin Herrenschmidt 75722d3992 [PATCH] ppc64: Thermal control for SMU based machines
This adds a new thermal control framework for PowerMac, along with the
implementation for PowerMac8,1, PowerMac8,2 (iMac G5 rev 1 and 2), and
PowerMac9,1 (latest single CPU desktop). In the future, I expect to move
the older G5 thermal control to the new framework as well.

Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: Paul Mackerras <paulus@samba.org>
2005-11-08 11:17:56 +11:00