From: Vivek Gautam <vivek.gautam-sgV2jX0FEOL9JmXXK+q4OQ@public.gmane.org>
To: joro-zLv9SwRftAIdnm+yROfE0A@public.gmane.org,
robh+dt-DgEjT+Ai2ygdnm+yROfE0A@public.gmane.org,
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will.deacon-5wv7dgnIgG8@public.gmane.org,
iommu-cunTk1MwBs9QetFLy7KEm3xJsTq8ys+cHZ5vskTnxNA@public.gmane.org,
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Cc: mark.rutland-5wv7dgnIgG8@public.gmane.org,
architt-sgV2jX0FEOL9JmXXK+q4OQ@public.gmane.org,
jcrouse-sgV2jX0FEOL9JmXXK+q4OQ@public.gmane.org,
linux-pm-u79uwXL29TY76Z2rM5mHXA@public.gmane.org,
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sricharan-sgV2jX0FEOL9JmXXK+q4OQ@public.gmane.org,
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alex.williamson-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org,
Vivek Gautam
<vivek.gautam-sgV2jX0FEOL9JmXXK+q4OQ@public.gmane.org>,
linux-arm-msm-u79uwXL29TY76Z2rM5mHXA@public.gmane.org,
tfiga-F7+t8E8rja9g9hUCZPvPmw@public.gmane.org,
freedreno-PD4FTy7X32lNgt0PjOBp9y5qC8QIuHrW@public.gmane.org,
m.szyprowski-Sze3O3UU22JBDgjK7y7TUQ@public.gmane.org
Subject: [PATCH v18 3/5] iommu/arm-smmu: Add the device_link between masters and smmu
Date: Tue, 27 Nov 2018 15:41:43 +0530 [thread overview]
Message-ID: <20181127101145.7682-4-vivek.gautam@codeaurora.org> (raw)
In-Reply-To: <20181127101145.7682-1-vivek.gautam-sgV2jX0FEOL9JmXXK+q4OQ@public.gmane.org>
From: Sricharan R <sricharan@codeaurora.org>
Finally add the device link between the master device and
smmu, so that the smmu gets runtime enabled/disabled only when the
master needs it. This is done from add_device callback which gets
called once when the master is added to the smmu.
Signed-off-by: Sricharan R <sricharan@codeaurora.org>
Signed-off-by: Vivek Gautam <vivek.gautam@codeaurora.org>
Reviewed-by: Tomasz Figa <tfiga@chromium.org>
Tested-by: Srinivas Kandagatla <srinivas.kandagatla@linaro.org>
Reviewed-by: Robin Murphy <robin.murphy@arm.com>
---
drivers/iommu/arm-smmu.c | 3 +++
1 file changed, 3 insertions(+)
diff --git a/drivers/iommu/arm-smmu.c b/drivers/iommu/arm-smmu.c
index 5610cc736f9d..f02e0f58e696 100644
--- a/drivers/iommu/arm-smmu.c
+++ b/drivers/iommu/arm-smmu.c
@@ -1501,6 +1501,9 @@ static int arm_smmu_add_device(struct device *dev)
iommu_device_link(&smmu->iommu, dev);
+ device_link_add(dev, smmu->dev,
+ DL_FLAG_PM_RUNTIME | DL_FLAG_AUTOREMOVE_SUPPLIER);
+
return 0;
out_cfg_free:
--
QUALCOMM INDIA, on behalf of Qualcomm Innovation Center, Inc. is a member
of Code Aurora Forum, hosted by The Linux Foundation
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next prev parent reply other threads:[~2018-11-27 10:11 UTC|newest]
Thread overview: 13+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-11-27 10:11 [PATCH v18 0/5] iommu/arm-smmu: Add runtime pm/sleep support Vivek Gautam
[not found] ` <20181127101145.7682-1-vivek.gautam-sgV2jX0FEOL9JmXXK+q4OQ@public.gmane.org>
2018-11-27 10:11 ` [PATCH v18 1/5] iommu/arm-smmu: Add pm_runtime/sleep ops Vivek Gautam
[not found] ` <20181127101145.7682-2-vivek.gautam-sgV2jX0FEOL9JmXXK+q4OQ@public.gmane.org>
2018-11-28 14:32 ` Thor Thayer
2018-11-28 16:24 ` Stephen Boyd
[not found] ` <154342225921.88331.14467967828250776155-n1Xw8LXHxjTHt/MElyovVYaSKrA+ACpX0E9HWUfgJXw@public.gmane.org>
2018-11-28 16:36 ` Robin Murphy
[not found] ` <0d76b669-6c4f-7c3b-50a1-084201f2c07a-5wv7dgnIgG8@public.gmane.org>
2018-11-29 14:55 ` Vivek Gautam
[not found] ` <CAFp+6iEC8hobAdVF5nLdhQdCUqbi1xa4Vi-NLugGshV=dg+h1A-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>
2018-11-30 18:15 ` Will Deacon
[not found] ` <20181130181536.GA15274-5wv7dgnIgG8@public.gmane.org>
2018-12-03 6:43 ` Vivek Gautam
[not found] ` <CAFp+6iH-T3KsUH8SDoLDfmJ6x_iHxtHGDySuKib0L_u46G6h6w-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>
2018-12-03 23:44 ` Stephen Boyd
2018-11-27 10:11 ` [PATCH v18 2/5] iommu/arm-smmu: Invoke pm_runtime during probe, add/remove device Vivek Gautam
2018-11-27 10:11 ` Vivek Gautam [this message]
2018-11-27 10:11 ` [PATCH v18 4/5] dt-bindings: arm-smmu: Add bindings for qcom, smmu-v2 Vivek Gautam
2018-11-27 10:11 ` [PATCH v18 5/5] iommu/arm-smmu: Add support for qcom,smmu-v2 variant Vivek Gautam
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