From: Janghyuck Kim <janghyuck.kim@samsung.com>
Date: Tue, 25 Oct 2016 10:29:53 +0000 (+0900)
Subject: [COMMON] iommu/exynos: support no-suspend feature
X-Git-Url: https://git.stricted.de/?a=commitdiff_plain;h=c0cc73a08a89655c9a3846637e17aaf562938a0d;p=GitHub%2FLineageOS%2Fandroid_kernel_motorola_exynos9610.git

[COMMON] iommu/exynos: support no-suspend feature

This patch supports no-suspend mode that not to disable sysmmu when it
is going to suspend state. It is necessary for the master driver like
abox that should operate in suspend mode.

Change-Id: I1ff1ccd83997f3852d5b962767c43bc0d6cd6819
Signed-off-by: Janghyuck Kim <janghyuck.kim@samsung.com>
---

diff --git a/drivers/iommu/exynos-iommu.c b/drivers/iommu/exynos-iommu.c
index 335068108c34..b4cabf54492b 100644
--- a/drivers/iommu/exynos-iommu.c
+++ b/drivers/iommu/exynos-iommu.c
@@ -586,6 +586,9 @@ static int __init sysmmu_parse_dt(struct device *sysmmu,
 		}
 	}
 
+	if (of_property_read_bool(sysmmu->of_node, "sysmmu,no-suspend"))
+		dev_pm_syscore_device(sysmmu, true);
+
 	/* Parsing TLB properties */
 	cnt = of_property_count_u32_elems(sysmmu->of_node, props_name);
 	for (i = 0; i < cnt; i+=2) {