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Commit fa069100 authored by Linux Build Service Account's avatar Linux Build Service Account Committed by Gerrit - the friendly Code Review server
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Merge "msm: lpm-levels: Save and restore cpu ctis on L2 SCU power transition"

parents 0153f373 5b3a3648

drivers/cpuidle/lpm-levels.c

+10 −0
Original line number Diff line number Diff line
@@ -30,6 +30,7 @@ 
#include <linux/remote_spinlock.h>

#include <linux/msm_remote_spinlock.h>

#include <linux/dma-mapping.h>

#include <linux/coresight-cti.h>

#include <soc/qcom/spm.h>

#include <soc/qcom/pm.h>

#include <soc/qcom/rpm-notifier.h>
@@ -178,18 +179,27 @@ int set_l2_mode(struct low_power_ops *ops, int mode, bool notify_rpm) 
{

	int lpm = mode;

	int rc = 0;

	static bool coresight_saved;



	ops->tz_flag = MSM_SCM_L2_ON;



	switch (mode) {

	case MSM_SPM_MODE_POWER_COLLAPSE:

		ops->tz_flag = MSM_SCM_L2_OFF;

		coresight_cti_ctx_save();

		coresight_saved = true;

		break;

	case MSM_SPM_MODE_GDHS:

		ops->tz_flag = MSM_SCM_L2_GDHS;

		coresight_cti_ctx_save();

		coresight_saved = true;

		break;

	case MSM_SPM_MODE_RETENTION:

	case MSM_SPM_MODE_DISABLED:

		if (coresight_saved) {

			coresight_cti_ctx_restore();

			coresight_saved = false;

		}

		break;

	default:

		lpm = MSM_SPM_MODE_DISABLED;