linux-toradex.git/include/linux/cpufreq.h, branch v4.5-rc2

cpufreq: Simplify core code related to boost support

2016-01-01T02:49:51+00:00

Notice that the boost_supported field in struct cpufreq_driver is
redundant, because the driver's ->set_boost callback may be left
unset if "boost" is not supported.  Moreover, the only driver
populating the ->set_boost callback is acpi_cpufreq, so make it
avoid populating that callback if "boost" is not supported, rework
the core to check ->set_boost instead of boost_supported to
verify "boost" support and drop boost_supported which isn't
used any more.

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

cpufreq: Make cpufreq_boost_supported() static

2016-01-01T02:49:51+00:00

cpufreq_boost_supported() is not used outside of cpufreq.c, so make
it static.

While at it, refactor it as a one-liner (which it really is).

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

cpufreq: use last policy after online for drivers with ->setpolicy

2015-12-02T22:50:33+00:00

For cpufreq drivers which use setpolicy interface, after offline->online
the policy is set to default. This can be reproduced by setting the
default policy of intel_pstate or longrun to ondemand and then change to
"performance". After offline and online, the setpolicy will be called with
the policy=ondemand.

For drivers using governors this condition is handled by storing
last_governor, during offline and restoring during online. The same should
be done for drivers using setpolicy interface. Storing last_policy during
offline and restoring during online.

Signed-off-by: Srinivas Pandruvada 
Signed-off-by: Rafael J. Wysocki

cpufreq: create cpu/cpufreq/policyX directories

2015-10-28T08:21:12+00:00

The cpufreq sysfs interface had been a bit inconsistent as one of the
CPUs for a policy had a real directory within its sysfs 'cpuX' directory
and all other CPUs had links to it. That also made the code a bit
complex as we need to take care of moving the sysfs directory if the CPU
containing the real directory is getting physically hot-unplugged.

Solve this by creating 'policyX' directories (per-policy) in
/sys/devices/system/cpu/cpufreq/ directory, where X is the CPU for which
the policy was first created.

This also removes the need of keeping kobj_cpu and we can remove it now.

Suggested-by: Saravana Kannan 
Signed-off-by: Viresh Kumar 
Reviewed-by: Saravana Kannan 
Acked-by: is more of a general agreement from the person that he is
Reviewed-by: is a more strict tag and implies that the reviewer has
Signed-off-by: Rafael J. Wysocki

cpufreq: remove cpufreq_sysfs_{create|remove}_file()

2015-10-28T08:21:12+00:00

They don't do anything special now, remove the unnecessary wrapper.

Reviewed-by: Saravana Kannan 
Signed-off-by: Viresh Kumar 
Signed-off-by: Rafael J. Wysocki

cpufreq: create cpu/cpufreq at boot time

2015-10-28T08:21:12+00:00

Later patches will need to create policy specific directories in
/sys/devices/system/cpu/cpufreq/ directory and so the cpufreq directory
wouldn't be ever empty.

And so no fun creating/destroying it on need basis anymore. Create it
once on system boot.

Reviewed-by: Saravana Kannan 
Signed-off-by: Viresh Kumar 
Signed-off-by: Rafael J. Wysocki

cpufreq: acpi-cpufreq: Use cpufreq_cpu_get_raw() in ->get()

2015-09-16T00:17:49+00:00

cpufreq_cpu_get() called by get_cur_freq_on_cpu() is overkill,
because the ->get() callback is always invoked in a context in
which all of the conditions checked by cpufreq_cpu_get() are
guaranteed to be satisfied.

Use cpufreq_cpu_get_raw() instead of it and drop the
corresponding cpufreq_cpu_put() from get_cur_freq_on_cpu().

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

Merge branch 'pm-opp'

2015-09-01T13:52:41+00:00

* pm-opp:
  PM / OPP: Drop unlikely before IS_ERR(_OR_NULL)
  PM / OPP: Fix static checker warning (broken 64bit big endian systems)
  PM / OPP: Free resources and properly return error on failure
  cpufreq-dt: make scaling_boost_freqs sysfs attr available when boost is enabled
  cpufreq: dt: Add support for turbo/boost mode
  cpufreq: dt: Add support for operating-points-v2 bindings
  cpufreq: Allow drivers to enable boost support after registering driver
  cpufreq: Update boost flag while initializing freq table from OPPs
  PM / OPP: add dev_pm_opp_is_turbo() helper
  PM / OPP: Add helpers for initializing CPU OPPs
  PM / OPP: Add support for opp-suspend
  PM / OPP: Add OPP sharing information to OPP library
  PM / OPP: Add clock-latency-ns support
  PM / OPP: Add support to parse "operating-points-v2" bindings
  PM / OPP: Break _opp_add_dynamic() into smaller functions
  PM / OPP: Allocate dev_opp from _add_device_opp()
  PM / OPP: Create _remove_device_opp() for freeing dev_opp
  PM / OPP: Relocate few routines
  PM / OPP: Create a directory for opp bindings
  PM / OPP: Update bindings to make opp-hz a 64 bit value

cpufreq: rename cpufreq_real_policy as cpufreq_user_policy

2015-09-01T13:50:39+00:00

Its all about caching min/max freq requested by userspace, and
the name 'cpufreq_real_policy' doesn't fit that well. Rename it to
cpufreq_user_policy.

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

cpufreq: remove redundant 'policy' field from user_policy

2015-09-01T13:50:39+00:00

Its always same as policy->policy, and there is no need to keep another
copy of it. Remove it.

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