Merge "defconfig: Add l2 reuse sysfs driver for bengal" (b2a8fe4d) · Commits · e / devices / android_kernel_oneplus_sm7250

arch/arm64/configs/vendor/bengal-perf_defconfig

+1 −0

Original line number	Diff line number	Diff line
		@@ -537,6 +537,7 @@ CONFIG_MSM_CDSP_LOADER=y
		CONFIG_QCOM_SMCINVOKE=y
		CONFIG_MSM_EVENT_TIMER=y
		CONFIG_MSM_PM=y
		CONFIG_QTI_L2_REUSE=y
		CONFIG_QTI_RPM_STATS_LOG=y
		CONFIG_QTEE_SHM_BRIDGE=y
		CONFIG_MEM_SHARE_QMI_SERVICE=y

arch/arm64/configs/vendor/bengal_defconfig

+1 −0

Original line number	Diff line number	Diff line
		@@ -561,6 +561,7 @@ CONFIG_MSM_CDSP_LOADER=y
		CONFIG_QCOM_SMCINVOKE=y
		CONFIG_MSM_EVENT_TIMER=y
		CONFIG_MSM_PM=y
		CONFIG_QTI_L2_REUSE=y
		CONFIG_QTI_RPM_STATS_LOG=y
		CONFIG_QTEE_SHM_BRIDGE=y
		CONFIG_MEM_SHARE_QMI_SERVICE=y

drivers/soc/qcom/Kconfig

+8 −0

Original line number	Diff line number	Diff line
		@@ -747,6 +747,14 @@ config MSM_SUSPEND_STATS_FIRST_BUCKET
		endif # MSM_IDLE_STATS
		endif # MSM_PM

		config QTI_L2_REUSE
		bool "Qualcomm Technologies Inc (QTI) L2 reuse"
		depends on ARCH_QCOM
		help
		This module allows to configure the L2 reuse feature dynamically
		to let the power collapsed cluster's L2 cache usage by the active
		cluster cpu. Use sysfs interface to control enabling this feature.

		config QTI_RPM_STATS_LOG
		bool "Qualcomm Technologies RPM Stats Driver"
		depends on QCOM_RPMH \|\| MSM_RPM_SMD

drivers/soc/qcom/Makefile

+1 −0

Original line number	Diff line number	Diff line
		@@ -97,3 +97,4 @@ obj-$(CONFIG_ICNSS) += icnss.o
		obj-$(CONFIG_ICNSS_QMI) += icnss_qmi.o wlan_firmware_service_v01.o
		obj-$(CONFIG_RMNET_CTL) += rmnet_ctl/
		obj-$(CONFIG_QCOM_CX_IPEAK) += cx_ipeak.o
		obj-$(CONFIG_QTI_L2_REUSE) += l2_reuse.o

drivers/soc/qcom/l2_reuse.c

0 → 100644

+71 −0

Original line number	Diff line number	Diff line
		// SPDX-License-Identifier: GPL-2.0-only
		/*
		* Copyright (c) 2019-2020, The Linux Foundation. All rights reserved.
		*/

		#include <linux/arm-smccc.h>
		#include <linux/kernel.h>
		#include <linux/init.h>
		#include <linux/module.h>
		#include <linux/uaccess.h>
		#include <linux/sysfs.h>
		#include <linux/kobject.h>

		#define L2_REUSE_SMC_ID 0x02001F01

		static bool l2_reuse_enable = true;
		static struct kobject *l2_reuse_kobj;

		static ssize_t sysfs_show(struct kobject *kobj,
		struct kobj_attribute attr, char buf)
		{
		return scnprintf(buf, PAGE_SIZE, "%u\n", l2_reuse_enable);
		}

		static ssize_t sysfs_store(struct kobject *kobj,
		struct kobj_attribute attr, const char buf, size_t count)
		{
		struct arm_smccc_res res;
		int ret;

		ret = kstrtobool(buf, &l2_reuse_enable);
		if (ret) {
		pr_err("Invalid argument passed\n");
		return ret;
		}

		arm_smccc_smc(L2_REUSE_SMC_ID, l2_reuse_enable, 1, 0, 0, 0, 0, 0, &res);
		return count;
		}

		struct kobj_attribute l2_reuse_attr = __ATTR(l2_reuse_enable, 0660,
		sysfs_show, sysfs_store);

		static int __init l2_reuse_driver_init(void)
		{
		l2_reuse_kobj = kobject_create_and_add("l2_reuse_enable", power_kobj);

		if (!l2_reuse_kobj) {
		pr_info("kobj creation for l2_reuse failed\n");
		return 0;
		}

		if (sysfs_create_file(l2_reuse_kobj, &l2_reuse_attr.attr))
		kobject_put(l2_reuse_kobj);

		return 0;
		}

		void __exit l2_reuse_driver_exit(void)
		{
		if (l2_reuse_kobj) {
		sysfs_remove_file(power_kobj, &l2_reuse_attr.attr);
		kobject_put(l2_reuse_kobj);
		}
		}

		module_init(l2_reuse_driver_init);
		module_exit(l2_reuse_driver_exit);

		MODULE_DESCRIPTION("Qualcomm Technologies Inc L2 REUSE Module");
		MODULE_LICENSE("GPL v2");