linux/drivers/base/power, branch v6.7

Merge branch 'opp/pm-domain-scmi' of git://git.kernel.org/pub/scm/linux/kernel/git/vireshk/pm into for-next/scmi/updates

2023-10-06T08:40:10Z

This is the merge of immutable point in PM OPP tree shared with SCMI so that the SCMI changes based on these OPP changes can be merged via the SCMI tree. * 'opp/pm-domain-scmi' of git://git.kernel.org/pub/scm/linux/kernel/git/vireshk/pm: OPP: Extend support for the opp-level beyond required-opps OPP: Switch to use dev_pm_domain_set_performance_state() OPP: Extend dev_pm_opp_data with a level OPP: Add dev_pm_opp_add_dynamic() to allow more flexibility PM: domains: Implement the ->set_performance_state() callback for genpd PM: domains: Introduce dev_pm_domain_set_performance_state()

PM: domains: Implement the ->set_performance_state() callback for genpd

2023-10-06T07:07:33Z

To enable generic support for performance scaling for PM domains, let's implement the ->set_performance_state() callback for genpd. Beyond this change, users of the corresponding genpd specific API, dev_pm_genpd_set_performance_state() are encouraged to switch to the common dev_pm_domain_set_performance_state() API. Signed-off-by: Ulf Hansson Acked-by: Rafael J. Wysocki Signed-off-by: Viresh Kumar

PM: domains: Introduce dev_pm_domain_set_performance_state()

2023-10-06T07:07:33Z

The generic PM domain is currently the only PM domain variant that supports performance scaling. To allow performance scaling to be supported through a common interface, let's add an optional callback ->set_performance_state(), in the struct dev_pm_domain. Moreover, let's add a function, dev_pm_domain_set_performance_state(), that may be called by consumers to request a new performance state for a device through its PM domain. Note that, in most cases it's preferred that a consumer use the OPP library to request a new performance state for its device. Although, this requires some additional changes to be supported, which are being implemented from subsequent changes. Signed-off-by: Ulf Hansson Acked-by: Rafael J. Wysocki Signed-off-by: Viresh Kumar

PM: domains: Allow genpd providers to manage OPP tables directly by its FW

2023-09-21T15:35:14Z

In some cases the OPP tables aren't specified in device tree, but rather encoded in the FW. To allow a genpd provider to specify them dynamically instead, let's add a new genpd flag, GENPD_FLAG_OPP_TABLE_FW. Signed-off-by: Ulf Hansson Link: https://lore.kernel.org/r/20230825112633.236607-13-ulf.hansson@linaro.org Signed-off-by: Sudeep Holla

PM: sleep: wakeirq: drop unused enable helpers

2023-07-24T07:51:51Z

Drop the wake-irq enable and disable helpers which have not been used since commit bed570307ed7 ("PM / wakeirq: Fix dedicated wakeirq for drivers not using autosuspend"). Note that these functions are essentially just leftovers from the first iteration of the wake-irq implementation where device drivers were supposed to call these functions themselves instead of PM core (as is also indicated by the bogus kernel doc comments). Signed-off-by: Johan Hovold Reviewed-by: Tony Lindgren Signed-off-by: Rafael J. Wysocki

PM: sleep: wakeirq: fix wake irq arming

2023-07-24T07:51:51Z

The decision whether to enable a wake irq during suspend can not be done based on the runtime PM state directly as a driver may use wake irqs without implementing runtime PM. Such drivers specifically leave the state set to the default 'suspended' and the wake irq is thus never enabled at suspend. Add a new wake irq flag to track whether a dedicated wake irq has been enabled at runtime suspend and therefore must not be enabled at system suspend. Note that pm_runtime_enabled() can not be used as runtime PM is always disabled during late suspend. Fixes: 69728051f5bf ("PM / wakeirq: Fix unbalanced IRQ enable for wakeirq") Cc: 4.16+ # 4.16+ Signed-off-by: Johan Hovold Reviewed-by: Tony Lindgren Tested-by: Tony Lindgren Signed-off-by: Rafael J. Wysocki

Merge branches 'pm-sleep' and 'pm-domains'

2023-06-26T15:44:50Z

Merge updates related to system-wide power management and generic power domains (genpd) updates for 6.5-rc1: - Fix the handling of pm_suspend_target_state when CONFIG_PM is unset (Kai-Heng Feng). - Correct spelling mistake in a comment in the hibernation code (Wang Honghui). - Add arch_resume_nosmt() prototype to avoid a "missing prototypes" build warning (Arnd Bergmann). - Restrict pm_pr_dbg() to system-wide power transitions and use it in a few additional places (Mario Limonciello). - Drop verification of in-params from genpd_add_device() and ensure that all of its callers will do it (Ulf Hansson). - Prevent possible integer overflows from occurring in genpd_parse_state() (Nikita Zhandarovich). * pm-sleep: platform/x86/amd: pmc: Use pm_pr_dbg() for suspend related messages pinctrl: amd: Use pm_pr_dbg to show debugging messages ACPI: x86: Add pm_debug_messages for LPS0 _DSM state tracking include/linux/suspend.h: Only show pm_pr_dbg messages at suspend/resume PM: suspend: add a arch_resume_nosmt() prototype PM: hibernate: Correct spelling mistake in a comment PM: suspend: Fix pm_suspend_target_state handling for !CONFIG_PM * pm-domains: PM: domains: Move the verification of in-params from genpd_add_device() PM: domains: fix integer overflow issues in genpd_parse_state()

PM: domains: Move the verification of in-params from genpd_add_device()

2023-06-16T17:39:51Z

Commit f38d1a6d0025 ("PM: domains: Allocate governor data dynamically based on a genpd governor") started to use the in-parameters in genpd_add_device(), without first doing a verification of them. This isn't really a big problem, as most callers do a verification already. Therefore, let's drop the verification from genpd_add_device() and make sure all the callers take care of it instead. Reported-by: Dan Carpenter Fixes: f38d1a6d0025 ("PM: domains: Allocate governor data dynamically based on a genpd governor") Signed-off-by: Ulf Hansson Signed-off-by: Rafael J. Wysocki

PM: suspend: Fix pm_suspend_target_state handling for !CONFIG_PM

2023-05-24T16:52:14Z

Move the pm_suspend_target_state definition for CONFIG_SUSPEND unset from the wakeup code into the headers so as to allow it to still be used elsewhere when CONFIG_SUSPEND is not set. Signed-off-by: Kai-Heng Feng [ rjw: Changelog and subject edits ] Signed-off-by: Rafael J. Wysocki

PM: domains: fix integer overflow issues in genpd_parse_state()

2023-05-24T16:37:28Z

Currently, while calculating residency and latency values, right operands may overflow if resulting values are big enough. To prevent this, albeit unlikely case, play it safe and convert right operands to left ones' type s64. Found by Linux Verification Center (linuxtesting.org) with static analysis tool SVACE. Fixes: 30f604283e05 ("PM / Domains: Allow domain power states to be read from DT") Signed-off-by: Nikita Zhandarovich Acked-by: Ulf Hansson Signed-off-by: Rafael J. Wysocki