linux-stable.git/drivers/opp/of.c, branch v5.13.2

opp: Add devres wrapper for dev_pm_opp_of_add_table

2021-03-15T03:56:53+00:00

Add devres wrapper for dev_pm_opp_of_add_table() to simplify drivers
code.

Signed-off-by: Yangtao Li 
Signed-off-by: Dmitry Osipenko 
Signed-off-by: Viresh Kumar

opp: Allow lazy-linking of required-opps

2021-02-02T05:00:53+00:00

The OPP core currently requires the required opp tables to be available
before the dependent OPP table is added, as it needs to create links
from the dependent OPP table to the required ones. This may not be
convenient for all the platforms though, as this requires strict
ordering for probing the drivers.

This patch allows lazy-linking of the required-opps. The OPP tables for
which the required-opp-tables aren't available at the time of their
initialization, are added to a special list of OPP tables:
lazy_opp_tables. Later on, whenever a new OPP table is registered with
the OPP core, we check if it is required by an OPP table in the pending
list; if yes, then we complete the linking then and there.

An OPP table is marked unusable until the time all its required-opp
tables are available. And if lazy-linking fails for an OPP table, the
OPP core disables all of its OPPs to make sure no one can use them.

Tested-by: Hsin-Yi Wang 
Signed-off-by: Viresh Kumar

opp: Print OPP level in debug message of _opp_add_static_v2()

2021-02-02T04:57:36+00:00

Print OPP level in debug message of _opp_add_static_v2(). This helps to
chase GENPD bugs.

Tested-by: Peter Geis 
Tested-by: Nicolas Chauvet 
Tested-by: Matt Merhar 
Signed-off-by: Dmitry Osipenko 
Signed-off-by: Viresh Kumar

opp: Add dev_pm_opp_of_add_table_noclk()

2021-02-02T04:57:26+00:00

A few drivers have device's clk but they don't want the OPP core to
handle that. Add a new helper for them, dev_pm_opp_of_add_table_noclk().

Signed-off-by: Viresh Kumar 
Tested-by: Dmitry Osipenko

opp: Defer acquiring the clk until OPPs are added

2021-02-02T04:57:20+00:00

We acquire the clk at the time the OPP table is allocated, though it
works fine, it is not the best place to do so. One of the main reason
being we may need to acquire it again from dev_pm_opp_set_clkname() if
the platform wants another clock to be acquired instead.

There is also requirement from some of the platforms where they do not
want the OPP core to manage the clock at all.

This patch hence defers acquiring the clk until the time we are certain
about which clk we need to acquire and if we really need to acquire one.
With this commit, the clk will get acquired either from
dev_pm_opp_set_clkname() or while we initialize the OPPs within the
table.

Signed-off-by: Viresh Kumar 
Tested-by: Dmitry Osipenko

opp: Create _of_add_table_indexed() to reduce code duplication

2021-02-02T04:57:06+00:00

The implementation of dev_pm_opp_of_add_table() and
dev_pm_opp_of_add_table_indexed() are almost identical. Create
_of_add_table_indexed() to reduce code redundancy.

Also remove the duplication of the doc style comments by referring to
dev_pm_opp_of_add_table() from dev_pm_opp_of_add_table_indexed().

Signed-off-by: Viresh Kumar 
Tested-by: Dmitry Osipenko

opp: Correct debug message in _opp_add_static_v2()

2021-02-02T04:56:56+00:00

The debug message always prints rate=0 instead of a proper value, fix it.

Fixes: 6c591eec67cb ("OPP: Add helpers for reading the binding properties")
Tested-by: Peter Geis 
Tested-by: Nicolas Chauvet 
Tested-by: Matt Merhar 
Signed-off-by: Dmitry Osipenko 
[ Viresh: Added Fixes tag ]
Signed-off-by: Viresh Kumar

Merge branch 'pm-cpufreq'

2020-12-15T14:24:52+00:00

* pm-cpufreq: (31 commits)
  cpufreq: Fix cpufreq_online() return value on errors
  cpufreq: Fix up several kerneldoc comments
  cpufreq: stats: Use local_clock() instead of jiffies
  cpufreq: schedutil: Simplify sugov_update_next_freq()
  cpufreq: intel_pstate: Simplify intel_cpufreq_update_pstate()
  cpufreq: arm_scmi: Discover the power scale in performance protocol
  firmware: arm_scmi: Add power_scale_mw_get() interface
  cpufreq: tegra194: Rename tegra194_get_speed_common function
  cpufreq: tegra194: Remove unnecessary frequency calculation
  cpufreq: tegra186: Simplify cluster information lookup
  cpufreq: tegra186: Fix sparse 'incorrect type in assignment' warning
  cpufreq: imx: fix NVMEM_IMX_OCOTP dependency
  cpufreq: vexpress-spc: Add missing MODULE_ALIAS
  cpufreq: scpi: Add missing MODULE_ALIAS
  cpufreq: loongson1: Add missing MODULE_ALIAS
  cpufreq: sun50i: Add missing MODULE_DEVICE_TABLE
  cpufreq: st: Add missing MODULE_DEVICE_TABLE
  cpufreq: qcom: Add missing MODULE_DEVICE_TABLE
  cpufreq: mediatek: Add missing MODULE_DEVICE_TABLE
  cpufreq: highbank: Add missing MODULE_DEVICE_TABLE
  ...

Merge branch 'opp/empty' into opp/linux-next

2020-12-09T05:54:12+00:00

opp: of: Allow empty opp-table with opp-shared

2020-12-09T05:53:46+00:00

The opp binding now allows to have an empty opp table and shared-opp to
still describe that devices share v/f lines.

When initialising an empty opp table, allow such case by:
- treating such conditions with warnings in place of errors
- don't fail on empty table

Signed-off-by: Nicola Mazzucato 
Signed-off-by: Viresh Kumar