linux/drivers/opp, branch v5.15

Merge branches 'pm-pci', 'pm-sleep', 'pm-domains' and 'powercap'

2021-08-30T17:25:42Z

* pm-pci: PCI: PM: Enable PME if it can be signaled from D3cold PCI: PM: Avoid forcing PCI_D0 for wakeup reasons inconsistently PCI: Use pci_update_current_state() in pci_enable_device_flags() * pm-sleep: PM: sleep: unmark 'state' functions as kernel-doc PM: sleep: check RTC features instead of ops in suspend_test PM: sleep: s2idle: Replace deprecated CPU-hotplug functions * pm-domains: PM: domains: Fix domain attach for CONFIG_PM_OPP=n arm64: dts: sc7180: Add required-opps for i2c PM: domains: Add support for 'required-opps' to set default perf state opp: Don't print an error if required-opps is missing * powercap: powercap: Add Power Limit4 support for Alder Lake SoC powercap: intel_rapl: Replace deprecated CPU-hotplug functions

Merge back new PM domains material for v5.15.

2021-08-30T17:20:32Z

opp: core: Check for pending links before reading required_opp pointers

2021-08-23T07:14:55Z

Commit 4fa82a87ba55 ("opp: Allow required-opps to be used for non genpd use cases") dereferences the pointers in required_opp_tables but these might be set to an ERR_PTR if the list still has lazy links pending, resulting in segfaults. Prior to this patch IS_ERR was also checked on required_opp_tables[i] before reading ->is_genpd inside _opp_table_alloc_required_tables, which is at the same time the predicate to add this table to the lazy list. This segfault is solved by reordering the checks to bail on lazy pending tables before reading ->is_genpd. Fixes: 4fa82a87ba55 ("opp: Allow required-opps to be used for non genpd use cases") Reviewed-by: AngeloGioacchino Del Regno Signed-off-by: Marijn Suijten Signed-off-by: Viresh Kumar

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

2021-08-16T16:45:29Z

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: Drop empty-table checks from _put functions

2021-08-16T04:12:08Z

The current_opp is released only when whole OPP table is released, otherwise it's only marked as removed by dev_pm_opp_remove_table(). Functions like dev_pm_opp_put_clkname() and dev_pm_opp_put_supported_hw() are checking whether OPP table is empty and it's not if current_opp is set since it holds the refcount of OPP, this produces a noisy warning from these functions about busy OPP table. Remove the checks to fix it. Cc: stable@vger.kernel.org Fixes: 81c4d8a3c414 ("opp: Keep track of currently programmed OPP") Signed-off-by: Dmitry Osipenko Signed-off-by: Viresh Kumar

opp: remove WARN when no valid OPPs remain

2021-08-04T04:01:25Z

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

2021-06-18T03:30:55Z

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

2021-05-20T04:02:40Z

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: Change return type of devm_pm_opp_attach_genpd()

2021-03-16T04:44:11Z

Make devm_pm_opp_attach_genpd() to return error code instead of opp_table pointer in order to have return type consistent with the other resource-managed OPP helpers. Signed-off-by: Dmitry Osipenko Signed-off-by: Viresh Kumar

opp: Change return type of devm_pm_opp_register_set_opp_helper()

2021-03-16T04:44:11Z

Make devm_pm_opp_register_set_opp_helper() to return error code instead of opp_table pointer in order to have return type consistent with the other resource-managed OPP helpers. Signed-off-by: Dmitry Osipenko Signed-off-by: Viresh Kumar