linux-toradex.git/drivers/opp/of.c, branch v5.17

opp: Fix return in _opp_add_static_v2()

2021-10-08T07:54:46+00:00

Fix sparse warning:
drivers/opp/of.c:924 _opp_add_static_v2() warn: passing zero to 'ERR_PTR'

For duplicate OPPs 'ret' be set to zero.

Fixes: deac8703da5f ("PM / OPP: _of_add_opp_table_v2(): increment count only if OPP is added")
Signed-off-by: YueHaibing 
Signed-off-by: Viresh Kumar

opp: Add more resource-managed variants of dev_pm_opp_of_add_table()

2021-10-04T11:03:15+00:00

Add resource-managed variants of dev_pm_opp_of_add_table_indexed() and
dev_pm_opp_of_add_table_noclk(), allowing drivers to remove boilerplate
code.

Signed-off-by: Dmitry Osipenko 
[ Viresh: Added underscore to devm_of_add_table_indexed() ]
Signed-off-by: Viresh Kumar

opp: Fix required-opps phandle array count check

2021-10-04T06:53:09+00:00

The 'required-opps' property is optional. So of_count_phandle_with_args()
can return -ENOENT when queried for required-opps. Handle this case.

Signed-off-by: Pavankumar Kondeti 
Signed-off-by: Viresh Kumar

Merge back new PM domains material for v5.15.

2021-08-30T17:20:32+00:00

opp: Don't print an error if required-opps is missing

2021-08-16T16:45:29+00:00

The 'required-opps' property is considered optional, hence remove
the pr_err() in of_parse_required_opp() when we find the property is
missing.
While at it, also fix the return value of
of_get_required_opp_performance_state() when of_parse_required_opp()
fails, return a -ENODEV instead of the -EINVAL.

Signed-off-by: Rajendra Nayak 
Reviewed-by: Ulf Hansson 
Acked-by: Viresh Kumar 
Signed-off-by: Rafael J. Wysocki

opp: remove WARN when no valid OPPs remain

2021-08-04T04:01:25+00:00

This WARN can be triggered per-core and the stack trace is not useful.
Replace it with plain dev_err(). Fix a comment while at it.

Signed-off-by: Michał Mirosław 
Signed-off-by: Viresh Kumar

opp: Allow required-opps to be used for non genpd use cases

2021-06-18T03:30:55+00:00

Don't limit required_opp_table to genpd only. One possible use case is
cpufreq based devfreq governor, which can use required-opps property to
derive devfreq from cpufreq.

Though the OPP core still doesn't support non-genpd required-opps in
_set_required_opps().

Suggested-by: Chanwoo Choi 
Signed-off-by: Hsin-Yi Wang 
[ Viresh: Update _set_required_opps() to check for genpd ]
Signed-off-by: Viresh Kumar

opp: use list_del_init instead of list_del/INIT_LIST_HEAD

2021-05-20T04:02:40+00:00

Using list_del_init() instead of list_del() + INIT_LIST_HEAD()
to simpify the code.

Signed-off-by: Yang Yingliang 
Signed-off-by: Viresh Kumar

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