linux-toradex.git/drivers/opp/debugfs.c, branch v5.9-rc6

opp: Expose bandwidth information via debugfs

2020-05-29T04:45:12+00:00

Expose the bandwidth information as well via debugfs.

Signed-off-by: Viresh Kumar 
Signed-off-by: Georgi Djakov

treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 500

2019-06-19T15:09:55+00:00

Based on 2 normalized pattern(s):

  this program is free software you can redistribute it and or modify
  it under the terms of the gnu general public license version 2 as
  published by the free software foundation

  this program is free software you can redistribute it and or modify
  it under the terms of the gnu general public license version 2 as
  published by the free software foundation #

extracted by the scancode license scanner the SPDX license identifier

  GPL-2.0-only

has been chosen to replace the boilerplate/reference in 4122 file(s).

Signed-off-by: Thomas Gleixner 
Reviewed-by: Enrico Weigelt 
Reviewed-by: Kate Stewart 
Reviewed-by: Allison Randal 
Cc: linux-spdx@vger.kernel.org
Link: https://lkml.kernel.org/r/20190604081206.933168790@linutronix.de
Signed-off-by: Greg Kroah-Hartman

opp: no need to check return value of debugfs_create functions

2019-02-07T04:28:32+00:00

When calling debugfs functions, there is no need to ever check the
return value.  The function can work or not, but the code logic should
never do something different based on this.

Cc: Viresh Kumar 
Cc: Nishanth Menon 
Cc: Stephen Boyd 
Cc: linux-pm@vger.kernel.org
Reviewed-by: Stephen Boyd 
Signed-off-by: Greg Kroah-Hartman 
Signed-off-by: Viresh Kumar

PM / OPP: "opp-hz" is optional for power domains

2018-05-09T04:45:18+00:00

"opp-hz" property is optional for power domains now and we shouldn't
error out if it is missing for power domains.

This patch creates two new routines, _get_opp_count() and
_opp_is_duplicate(), by separating existing code from their parent
functions. Also skip duplicate OPP check for power domain OPPs as they
may not have any the "opp-hz" field, but a platform specific performance
state binding to uniquely identify OPP nodes.

By default the debugfs OPP nodes are named using the "rate" value, but
that isn't possible for the power domain OPP nodes and hence they use
the index of the OPP node in the OPP node list instead.

Signed-off-by: Viresh Kumar 
Reviewed-by: Ulf Hansson

PM / OPP: Support updating performance state of device's power domain

2017-10-13T22:54:40+00:00

The genpd framework now provides an API to request device's power
domain to update its performance state.  Use that interface from the
OPP core for devices whose power domains support performance states.

Note that this commit doesn't add any mechanism by which performance
states are made available to the OPP core. That would be done by a
later commit.

Note that the current implementation is restricted to the case where
the device doesn't have separate regulators for itself. We shouldn't
over engineer the code before we have real use case for them. We can
always come back and add more code to support such cases later on.

Tested-by: Rajendra Nayak 
Signed-off-by: Viresh Kumar 
Signed-off-by: Rafael J. Wysocki

PM / OPP: Use snprintf() to avoid kasprintf() and kfree()

2017-10-10T23:49:17+00:00

Use snprintf() to avoid unnecessary initializations, avoid calling
kfree().

Signed-off-by: Arvind Yadav 
Acked-by: Viresh Kumar 
Reviewed-by: Stephen Boyd 
Signed-off-by: Rafael J. Wysocki

PM / OPP: Move the OPP directory out of power/

2017-10-03T00:45:12+00:00

The drivers/base/power/ directory is special and contains code related
to power management core like system suspend/resume, hibernation, etc.
It was fine to keep the OPP code inside it when we had just one file for
it, but it is growing now and already has a directory for itself.

Lets move it directly under drivers/ directory, just like cpufreq and
cpuidle.

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