Unverified Commit b8d07012 authored by openeuler-ci-bot's avatar openeuler-ci-bot Committed by Gitee
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!14228 Implementation of the uncore frequency modulation feature 

Merge Pull Request from: @li-wei2110 
 
Devfreq is a general DVFS framework for non-CPU devices in the kernel.
It is generally used for bus devices. Implementation of uncore dynamic
frequency modulation based on this framework. 
 
Link:https://gitee.com/openeuler/kernel/pulls/14228
parents 429a1987 ac3dc0c5

drivers/devfreq/Kconfig

+12 −0
Original line number Diff line number Diff line
@@ -73,6 +73,12 @@ config DEVFREQ_GOV_PASSIVE 
	  through sysfs entries. The passive governor recommends that

	  devfreq device uses the OPP table to get the frequency/voltage.



config DEVFREQ_GOV_UTIL

	tristate "Util"

	help

	  This governor Adjust the frequency based on the load utilization

	  rate.



comment "DEVFREQ Drivers"



config ARM_EXYNOS_BUS_DEVFREQ
@@ -150,6 +156,12 @@ config ARM_SUN8I_A33_MBUS_DEVFREQ 
	  This adds the DEVFREQ driver for the MBUS controller in some

	  Allwinner sun8i (A33 through H3) and sun50i (A64 and H5) SoCs.



config ARM_HISI_UNCORE_DEVFREQ

	tristate "HiSilicon uncore DEVFREQ Driver"

	depends on (PCC && ACPI && ACPI_PPTT) || COMPILE_TEST

	help

	  HiSilicon uncore DEVFREQ Driver



source "drivers/devfreq/event/Kconfig"



endif # PM_DEVFREQ

drivers/devfreq/Makefile

+2 −0
Original line number Diff line number Diff line
@@ -6,6 +6,7 @@ obj-$(CONFIG_DEVFREQ_GOV_PERFORMANCE) += governor_performance.o 
obj-$(CONFIG_DEVFREQ_GOV_POWERSAVE)	+= governor_powersave.o

obj-$(CONFIG_DEVFREQ_GOV_USERSPACE)	+= governor_userspace.o

obj-$(CONFIG_DEVFREQ_GOV_PASSIVE)	+= governor_passive.o

obj-$(CONFIG_DEVFREQ_GOV_UTIL)		+= governor_util.o



# DEVFREQ Drivers

obj-$(CONFIG_ARM_EXYNOS_BUS_DEVFREQ)	+= exynos-bus.o
@@ -15,6 +16,7 @@ obj-$(CONFIG_ARM_MEDIATEK_CCI_DEVFREQ) += mtk-cci-devfreq.o 
obj-$(CONFIG_ARM_RK3399_DMC_DEVFREQ)	+= rk3399_dmc.o

obj-$(CONFIG_ARM_SUN8I_A33_MBUS_DEVFREQ)	+= sun8i-a33-mbus.o

obj-$(CONFIG_ARM_TEGRA_DEVFREQ)		+= tegra30-devfreq.o

obj-$(CONFIG_ARM_HISI_UNCORE_DEVFREQ)	+= hisi_uncore_freq.o



# DEVFREQ Event Drivers

obj-$(CONFIG_PM_DEVFREQ_EVENT)		+= event/

drivers/devfreq/devfreq-event.c

+33 −1
Original line number Diff line number Diff line
@@ -256,6 +256,37 @@ struct devfreq_event_dev *devfreq_event_get_edev_by_phandle(struct device *dev, 
}

EXPORT_SYMBOL_GPL(devfreq_event_get_edev_by_phandle);



/**

 * devfreq_event_get_edev_by_dev() - Get the devfreq-event dev from

 *					 specified device.

 * @dev		: the pointer to the given device

 *

 * Note that this function return the pointer of devfreq-event device.

 */

struct devfreq_event_dev *devfreq_event_get_edev_by_dev(struct device *dev)

{

	struct devfreq_event_dev *edev;



	if (!dev)

		return ERR_PTR(-EINVAL);



	mutex_lock(&devfreq_event_list_lock);

	list_for_each_entry(edev, &devfreq_event_list, node) {

		if (edev->dev.parent == dev)

			goto out;

	}



	edev = NULL;

out:

	mutex_unlock(&devfreq_event_list_lock);



	if (!edev)

		return ERR_PTR(-ENODEV);



	return edev;

}

EXPORT_SYMBOL_GPL(devfreq_event_get_edev_by_dev);



/**

 * devfreq_event_get_edev_count() - Get the count of devfreq-event dev

 * @dev		: the pointer to the given device
@@ -328,7 +359,8 @@ struct devfreq_event_dev *devfreq_event_add_edev(struct device *dev, 
	edev->dev.class = devfreq_event_class;

	edev->dev.release = devfreq_event_release_edev;



	dev_set_name(&edev->dev, "event%d", atomic_inc_return(&event_no));

	dev_set_name(&edev->dev, "event-%s-%d",

			 desc->name, atomic_inc_return(&event_no));

	ret = device_register(&edev->dev);

	if (ret < 0) {

		put_device(&edev->dev);

drivers/devfreq/event/Kconfig

+7 −0
Original line number Diff line number Diff line
@@ -39,4 +39,11 @@ config DEVFREQ_EVENT_ROCKCHIP_DFI 
	  This add the devfreq-event driver for Rockchip SoC. It provides DFI

	  (DDR Monitor Module) driver to count ddr load.



config DEVFREQ_EVENT_HISI_UNCORE

	tristate "HISI UNCORE DEVFREQ event Driver"

	depends on HISI_PMU

	help

	  This add the devfreq-event driver for HISI uncore. It provides UMM

	  (UNCORE Monitor Module) driver to count uncore load.



endif # PM_DEVFREQ_EVENT

drivers/devfreq/event/Makefile

+2 −0
Original line number Diff line number Diff line
@@ -4,3 +4,5 @@ 
obj-$(CONFIG_DEVFREQ_EVENT_EXYNOS_NOCP) += exynos-nocp.o

obj-$(CONFIG_DEVFREQ_EVENT_EXYNOS_PPMU) += exynos-ppmu.o

obj-$(CONFIG_DEVFREQ_EVENT_ROCKCHIP_DFI) += rockchip-dfi.o

obj-$(CONFIG_DEVFREQ_EVENT_HISI_UNCORE) += hisi-uncore.o \

					hisi-uncore-l3c.o hisi-uncore-ddrc.o