kernel/linux.git/drivers/base/power, branch v6.6.2

PM: sleep: wakeirq: drop unused enable helpers

2023-07-24T07:51:51+00:00

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

2023-07-24T07:51:51+00:00

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'

2023-06-26T15:44:50+00:00

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()

2023-06-16T17:39:51+00:00

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

2023-05-24T16:52:14+00:00

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()

2023-05-24T16:37:28+00:00

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

Merge tag 'driver-core-6.4-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core

2023-04-27T18:53:57+00:00

Pull driver core updates from Greg KH: "Here is the large set of driver core changes for 6.4-rc1. Once again, a busy development cycle, with lots of changes happening in the driver core in the quest to be able to move "struct bus" and "struct class" into read-only memory, a task now complete with these changes. This will make the future rust interactions with the driver core more "provably correct" as well as providing more obvious lifetime rules for all busses and classes in the kernel. The changes required for this did touch many individual classes and busses as many callbacks were changed to take const * parameters instead. All of these changes have been submitted to the various subsystem maintainers, giving them plenty of time to review, and most of them actually did so. Other than those changes, included in here are a small set of other things: - kobject logging improvements - cacheinfo improvements and updates - obligatory fw_devlink updates and fixes - documentation updates - device property cleanups and const * changes - firwmare loader dependency fixes. All of these have been in linux-next for a while with no reported problems" * tag 'driver-core-6.4-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core: (120 commits) device property: make device_property functions take const device * driver core: update comments in device_rename() driver core: Don't require dynamic_debug for initcall_debug probe timing firmware_loader: rework crypto dependencies firmware_loader: Strip off \n from customized path zram: fix up permission for the hot_add sysfs file cacheinfo: Add use_arch[|_cache]_info field/function arch_topology: Remove early cacheinfo error message if -ENOENT cacheinfo: Check cache properties are present in DT cacheinfo: Check sib_leaf in cache_leaves_are_shared() cacheinfo: Allow early level detection when DT/ACPI info is missing/broken cacheinfo: Add arm64 early level initializer implementation cacheinfo: Add arch specific early level initializer tty: make tty_class a static const structure driver core: class: remove struct class_interface * from callbacks driver core: class: mark the struct class in struct class_interface constant driver core: class: make class_register() take a const * driver core: class: mark class_release() as taking a const * driver core: remove incorrect comment for device_create* MIPS: vpe-cmp: remove module owner pointer from struct class usage. ...

PM: core: Remove unnecessary (void *) conversions

2023-04-07T11:27:13+00:00

Assignments from pointer variables of type (void *) do not require explicit type casts, so remove such type cases from the code in drivers/base/power/main.c where applicable. Signed-off-by: Li zeming [ rjw: Subject and changelog edits ] Signed-off-by: Rafael J. Wysocki

driver core: class: remove module * from class_create()

2023-03-17T14:16:33+00:00

The module pointer in class_create() never actually did anything, and it shouldn't have been requred to be set as a parameter even if it did something. So just remove it and fix up all callers of the function in the kernel tree at the same time. Cc: "Rafael J. Wysocki" Acked-by: Benjamin Tissoires Link: https://lore.kernel.org/r/20230313181843.1207845-4-gregkh@linuxfoundation.org Signed-off-by: Greg Kroah-Hartman

Merge tag 'clk-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/clk/linux

2023-02-25T23:16:23+00:00

Pull clk updates from Stephen Boyd: "We have one small patch to the clk core this time around. It fixes a corner case with the CLK_OPS_PARENT_ENABLE flag combined with clk_core_is_enabled() where it hangs the system. We'll simply assume the clk is disabled if the parent is disabled and the flag is set. Trying to turn on the parent to check the enable state of the clk runs into system hangs at boot. We let this bake in -next for a couple weeks to make sure there aren't any more issues because the last attempt to fix this ran into hangs and had to be reverted. Note: There were some more patches to the core framework around sync_state and disabling unused clks, but I asked for that to be reverted from the qcom PR because it isn't ready and we're still discussing the best solution on the list. Outside of the core clk framework, we have the usual collection of clk driver updates and support for new SoCs (which seems to never stop). The dirstat is dominated by Qualcomm because they added support for quite a few SoCs this time around and also migrated quite a few of their drivers to clk_parent_data. The other big diff is in the Mediatek clk drivers that saw a significant rework this cycle to similarly modernize the code, and we'll see that work continue in the next cycle as well. Nothing really jumps out as scary here, except that the significant churn in parent data descriptions can have typos that go unnoticed. More details below. Core: - Honor CLK_OPS_PARENT_ENABLE in clk_core_is_enabled() New Drivers: - Add a new clk-gpr-mux clock type and use it on i.MX6Q to add ENET ref clocks - Support for Mediatek MT7891 SoC clks - Support for many Qualcomm clk controllers: - QDU1000/QRU1000 global clock controller - SA8775P global clock controller - SM8550 TCSR and display clock controller - SM6350 clock controller - MSM8996 CBF and APCS clock controllers Updates: - Various cleanups and improvements to Mediatek clk drivers to reduce code size and modernize the drivers - Support for Versa 5P49V60 clks - Disable R-Car H3 ES1.*, as it was only available to an internal development group and needed a lot of quirks and workarounds - Add PWM, Compare-Match Timer (TIM), USB, SDHI, and eMMC clocks and resets on Renesas RZ/V2M - Add display clocks on Renesas R-Car V4H - Add Camera Receiving Unit (CRU) clocks and resets on Renesas RZ/G2L - Free the imx_uart_clocks even if imx_register_uart_clocks returns early - Get the stdout clocks count from device tree on i.MX - Drop the clock count argument from imx_register_uart_clocks() - Keep the uart clocks on i.MX93 for when earlycon is used - Fix SPDX comment in i.MX6SLL clocks bindings header - Drop some unnecessary spaces from i.MX8ULP clocks bindings header - Add imx_obtain_fixed_of_clock() for allowing to add a clock that is not configured via devicetree - Fix the ENET1 gate configuration for i.MX6UL according to the reference manual - Add ENET refclock mux support for i.MX6UL - Add support for USB host/device configuration on Renesas RZ/N1 - Add PLL2 programming support, and CAN-FD clocks on Renesas R-Car V4H - Add D1 CAN bus gates and resets for Allwinner - Mark D1 CPUX clock as critical on Allwinner - Reuse D1 driver for Allwinner R528/T113 - Cleanup sunxi-ng Kconfig - Fix sunxi-ng kernel-doc issues - Model Allwinner H3/H5 DRAM clock as fixed clock - Use .determine_rate() instead of .round_rate() for the dualdiv, mpll, sclk-div and cpu-dyn-div amlogic clock drivers - DDR clocks were marked as critical in the proper clock driver for each AT91 SoC such that drivers/memory/atmel-sdramc.c to be deleted in the next releases as it only does clock enablement - Patch to avoid compiling dt-compat.o for all AT91 SoCs as only some of them may use it - Support synchronous power_off requests in the qcom GDSC driver for proper GPU power collapse - Drop test clocks from various Qualcomm clk drivers - Update parent references to use clk_parent_data/clk_hw in various Qualcomm clk drivers - Fixes for the Qualcomm MSM8996 CPU clock controller - Transition Qualcomm MSM8974 GCC off the externally defined sleep_clk - Add GDSCs in the global clock controller for Qualcomm QCS404 - The SDCC core clocks on Qualcomm SM6115 are moved to floor_ops - Programming of clk_dis_wait for GPU CX GDSC on Qualcomm SC7180 and SDM845 are moved to use the recently introduced properties in the GDSC struct - Qualcomm's RPMh clock driver gains SM8550 and SA8775P clocks, and the IPA clock is added on a variety of platforms - De-duplicate identical clks in Qualcomm SMD RPM clk driver - Add a few missing clocks across msm8998, msm8992, msm8916, qcs404 to Qualcomm SDM RPM clk driver - Various Qualcomm clk drivers use devm_pm_runtime_enable() to simplify" * tag 'clk-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/clk/linux: (228 commits) clk: qcom: apcs-msm8986: Include bitfield.h for FIELD_PREP clk: qcom: Revert sync_state based clk_disable_unused clk: imx: pll14xx: fix recalc_rate for negative kdiv clk: rs9: Drop unused pin_xin field MAINTAINERS: clk: imx: Add Peng Fan as reviewer clk: sprd: Add dependency for SPRD_UMS512_CLK clk: ralink: fix 'mt7621_gate_is_enabled()' function clk: mediatek: clk-mtk: Remove unneeded semicolon dt-bindings: clock: remove stih416 bindings dt-bindings: clock: add loongson-2 clock dt-bindings: clock: add loongson-2 clock include file clk: imx: fix compile testing imxrt1050 clk: Honor CLK_OPS_PARENT_ENABLE in clk_core_is_enabled() clk: imx: set imx_clk_gpr_mux_ops storage-class-specifier to static clk: renesas: rcar-gen3: Disable R-Car H3 ES1.* dt-bindings: clock: Merge qcom,gpucc-sm8350 into qcom,gpucc.yaml clk: qcom: gpucc-sdm845: fix clk_dis_wait being programmed for CX GDSC clk: qcom: gpucc-sc7180: fix clk_dis_wait being programmed for CX GDSC dt-bindings: clock: qcom,sa8775p-gcc: add the power-domains property clk: qcom: cpu-8996: add missing cputype include ...