From: Youngtae Lee <yt0729.lee@samsung.com>
Date: Mon, 23 Apr 2018 07:29:22 +0000 (+0900)
Subject: samsung: cpupm: Disable idle during hotplug in-out
X-Git-Url: https://git.stricted.de/?a=commitdiff_plain;h=b1ff9aa85bf218c24f59dd6619849664e097fb2f;p=GitHub%2FLineageOS%2Fandroid_kernel_motorola_exynos9610.git

samsung: cpupm: Disable idle during hotplug in-out

Change-Id: I4eaff38545bf584b3867da9078b16bebaf42499d
Signed-off-by: Youngtae Lee <yt0729.lee@samsung.com>
---

diff --git a/drivers/soc/samsung/exynos-cpupm.c b/drivers/soc/samsung/exynos-cpupm.c
index 4c7e34024251..9588f912058a 100644
--- a/drivers/soc/samsung/exynos-cpupm.c
+++ b/drivers/soc/samsung/exynos-cpupm.c
@@ -914,8 +914,28 @@ static int __init exynos_cpupm_init(void)
 arch_initcall(exynos_cpupm_init);
 #endif
 
+static int cpuhp_cpupm_enable_idle(unsigned int cpu)
+{
+	struct cpuidle_device *dev = per_cpu(cpuidle_devices, cpu);
+	cpuidle_enable_device(dev);
+
+	return 0;
+}
+static int cpuhp_cpupm_disable_idle(unsigned int cpu)
+{
+	struct cpuidle_device *dev = per_cpu(cpuidle_devices, cpu);
+	cpuidle_disable_device(dev);
+
+	return 0;
+}
+
 static int __init exynos_cpupm_early_init(void)
 {
+	cpuhp_setup_state(CPUHP_AP_EXYNOS_IDLE_CTRL,
+				"AP_EXYNOS_IDLE_CTROL",
+				cpuhp_cpupm_enable_idle,
+				cpuhp_cpupm_disable_idle);
+
 	cpuhp_setup_state(CPUHP_AP_EXYNOS_CPU_UP_POWER_CONTROL,
 				"AP_EXYNOS_CPU_UP_POWER_CONTROL",
 				cpuhp_cpupm_online, NULL);
diff --git a/include/linux/cpuhotplug.h b/include/linux/cpuhotplug.h
index b31a421f1be2..9e5782073ad7 100644
--- a/include/linux/cpuhotplug.h
+++ b/include/linux/cpuhotplug.h
@@ -170,6 +170,7 @@ enum cpuhp_state {
 	CPUHP_AP_EXYNOS_ACME,
 	CPUHP_AP_X86_HPET_ONLINE,
 	CPUHP_AP_X86_KVM_CLK_ONLINE,
+	CPUHP_AP_EXYNOS_IDLE_CTRL,
 	CPUHP_AP_ACTIVE,
 	CPUHP_ONLINE,
 };