linux-toradex.git/include/linux/pm_opp.h, branch v4.4-rc6

PM / OPP: Prefix exported opp routines with dev_pm_opp_

2015-09-15T00:03:16+00:00

That's the naming convention followed in most of opp core, but few
routines didn't follow this, fix them.

Reviewed-by: Stephen Boyd 
Signed-off-by: Viresh Kumar 
Acked-by: Shawn Guo 
Signed-off-by: Rafael J. Wysocki

PM / OPP: Rename opp init/free table routines

2015-09-15T00:03:15+00:00

free-table routines are opposite of init-table ones, and must be named
to make that clear. Opposite of 'init' is 'exit', but those doesn't suit
really well.

Replace 'init' with 'add' and 'free' with 'remove'.

Reported-by: Pavel Machek 
Reviewed-by: Stephen Boyd 
Signed-off-by: Viresh Kumar 
Acked-by: Shawn Guo 
Signed-off-by: Rafael J. Wysocki

PM / OPP: add dev_pm_opp_get_suspend_opp() helper

2015-09-09T00:20:39+00:00

Add dev_pm_opp_get_suspend_opp() helper to obtain suspend opp.

Acked-by: Viresh Kumar 
Signed-off-by: Bartlomiej Zolnierkiewicz 
Signed-off-by: Rafael J. Wysocki

PM / OPP: add dev_pm_opp_is_turbo() helper

2015-08-07T01:17:06+00:00

Add dev_pm_opp_is_turbo() helper to verify if an opp is to be used only
for turbo mode or not.

Reviewed-by: Stephen Boyd 
Signed-off-by: Bartlomiej Zolnierkiewicz 
Signed-off-by: Viresh Kumar 
Signed-off-by: Rafael J. Wysocki

PM / OPP: Add helpers for initializing CPU OPPs

2015-08-07T01:16:01+00:00

With "operating-points-v2" its possible to tell which devices share
OPPs. We already have infrastructure to decode that information.

This patch adds following APIs:
 - of_get_cpus_sharing_opps: Returns cpumask of CPUs sharing OPPs (only
   valid with v2 bindings).
 - of_cpumask_init_opp_table: Initializes OPPs for all CPUs present in
   cpumask.
 - of_cpumask_free_opp_table: Frees OPPs for all CPUs present in cpumask.

 - set_cpus_sharing_opps: Sets which CPUs share OPPs (only valid with old
   OPP bindings, as this information isn't present in DT).

Reviewed-by: Stephen Boyd 
Reviewed-by: Bartlomiej Zolnierkiewicz 
Signed-off-by: Viresh Kumar 
Signed-off-by: Rafael J. Wysocki

PM / OPP: Add clock-latency-ns support

2015-08-07T01:04:23+00:00

With "operating-points-v2" bindings, clock-latency is defined per OPP.
Users of this value expect a single value which defines the latency to
switch to any clock rate. Find maximum clock-latency-ns from the OPP
table to service requests from such users.

Reviewed-by: Stephen Boyd 
Reviewed-by: Bartlomiej Zolnierkiewicz 
Signed-off-by: Viresh Kumar 
Signed-off-by: Rafael J. Wysocki

PM / OPP Introduce APIs to remove OPPs

2014-11-29T22:53:20+00:00

OPPs are created statically (from DT) or dynamically. Currently we don't free
OPPs that are created statically, when the module unloads. And so if the module
is inserted back again, we get warning for duplicate OPPs as the same were
already present.

Also, there might be a need to remove dynamic OPPs in future and so API for that
is also added.

This patch adds helper APIs to remove/free existing static and dynamic OPPs.

Because the OPPs are used both under RCU and SRCU, we have to wait for grace
period of both. And so are using kfree_rcu() from within call_srcu().

Signed-off-by: Viresh Kumar 
Signed-off-by: Rafael J. Wysocki

PM / OPP: Move cpufreq specific OPP functions out of generic OPP library

2014-05-06T22:39:03+00:00

CPUFreq specific helper functions for OPP (Operating Performance Points)
now use generic OPP functions that allow CPUFreq to be be moved back
into CPUFreq framework. This allows for independent modifications
or future enhancements as needed isolated to just CPUFreq framework
alone.

Here, we just move relevant code and documentation to make this part of
CPUFreq infrastructure.

Cc: Kevin Hilman 
Signed-off-by: Nishanth Menon 
Acked-by: Viresh Kumar 
Signed-off-by: Rafael J. Wysocki

PM / OPP: rename header to linux/pm_opp.h

2013-10-25T20:33:23+00:00

Since Operating Performance Points (OPP) functions are specific
to device specific power management, be specific and rename opp.h
to pm_opp.h

Reported-by: Randy Dunlap 
Signed-off-by: Nishanth Menon 
Signed-off-by: Rafael J. Wysocki