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,
robin.murphy-5wv7dgnIgG8@public.gmane.org,
will.deacon-5wv7dgnIgG8@public.gmane.org,
iommu-cunTk1MwBs9QetFLy7KEm3xJsTq8ys+cHZ5vskTnxNA@public.gmane.org,
devicetree-u79uwXL29TY76Z2rM5mHXA@public.gmane.org
Cc: mark.rutland-5wv7dgnIgG8@public.gmane.org,
linux-pm-u79uwXL29TY76Z2rM5mHXA@public.gmane.org,
sboyd-DgEjT+Ai2ygdnm+yROfE0A@public.gmane.org,
rjw-LthD3rsA81gm4RdzfppkhA@public.gmane.org,
linux-kernel-u79uwXL29TY76Z2rM5mHXA@public.gmane.org,
alex.williamson-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org,
linux-arm-msm-u79uwXL29TY76Z2rM5mHXA@public.gmane.org,
freedreno-PD4FTy7X32lNgt0PjOBp9y5qC8QIuHrW@public.gmane.org
Subject: [PATCH v19 3/5] iommu/arm-smmu: Add the device_link between masters and smmu
Date: Tue, 4 Dec 2018 11:52:11 +0530 [thread overview]
Message-ID: <20181204062213.6875-4-vivek.gautam@codeaurora.org> (raw)
In-Reply-To: <20181204062213.6875-1-vivek.gautam-sgV2jX0FEOL9JmXXK+q4OQ@public.gmane.org>
From: Sricharan R <sricharan-sgV2jX0FEOL9JmXXK+q4OQ@public.gmane.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-sgV2jX0FEOL9JmXXK+q4OQ@public.gmane.org>
Signed-off-by: Vivek Gautam <vivek.gautam-sgV2jX0FEOL9JmXXK+q4OQ@public.gmane.org>
Reviewed-by: Tomasz Figa <tfiga-F7+t8E8rja9g9hUCZPvPmw@public.gmane.org>
Tested-by: Srinivas Kandagatla <srinivas.kandagatla-QSEj5FYQhm4dnm+yROfE0A@public.gmane.org>
Reviewed-by: Robin Murphy <robin.murphy-5wv7dgnIgG8@public.gmane.org>
---
Changes since v18:
None.
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 1917d214c4d9..b6b11642b3a9 100644
--- a/drivers/iommu/arm-smmu.c
+++ b/drivers/iommu/arm-smmu.c
@@ -1500,6 +1500,9 @@ 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
WARNING: multiple messages have this Message-ID (diff)
From: Vivek Gautam <vivek.gautam@codeaurora.org>
To: joro@8bytes.org, robh+dt@kernel.org, robin.murphy@arm.com,
will.deacon@arm.com, iommu@lists.linux-foundation.org,
devicetree@vger.kernel.org
Cc: alex.williamson@redhat.com, mark.rutland@arm.com,
rjw@rjwysocki.net, robdclark@gmail.com,
linux-kernel@vger.kernel.org, linux-pm@vger.kernel.org,
freedreno@lists.freedesktop.org, sboyd@kernel.org,
tfiga@chromium.org, jcrouse@codeaurora.org,
sricharan@codeaurora.org, m.szyprowski@samsung.com,
architt@codeaurora.org, linux-arm-msm@vger.kernel.org,
thor.thayer@linux.intel.com,
Vivek Gautam <vivek.gautam@codeaurora.org>
Subject: [PATCH v19 3/5] iommu/arm-smmu: Add the device_link between masters and smmu
Date: Tue, 4 Dec 2018 11:52:11 +0530 [thread overview]
Message-ID: <20181204062213.6875-4-vivek.gautam@codeaurora.org> (raw)
In-Reply-To: <20181204062213.6875-1-vivek.gautam@codeaurora.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>
---
Changes since v18:
None.
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 1917d214c4d9..b6b11642b3a9 100644
--- a/drivers/iommu/arm-smmu.c
+++ b/drivers/iommu/arm-smmu.c
@@ -1500,6 +1500,9 @@ 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
next prev parent reply other threads:[~2018-12-04 6:22 UTC|newest]
Thread overview: 11+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-12-04 6:22 [PATCH v19 0/5] iommu/arm-smmu: Add runtime pm/sleep support Vivek Gautam
2018-12-04 6:22 ` Vivek Gautam
[not found] ` <20181204062213.6875-1-vivek.gautam-sgV2jX0FEOL9JmXXK+q4OQ@public.gmane.org>
2018-12-04 6:22 ` [PATCH v19 1/5] iommu/arm-smmu: Add pm_runtime/sleep ops Vivek Gautam
2018-12-04 6:22 ` Vivek Gautam
2018-12-04 6:22 ` [PATCH v19 2/5] iommu/arm-smmu: Invoke pm_runtime across the driver Vivek Gautam
2018-12-04 6:22 ` Vivek Gautam
2018-12-04 6:22 ` Vivek Gautam [this message]
2018-12-04 6:22 ` [PATCH v19 3/5] iommu/arm-smmu: Add the device_link between masters and smmu Vivek Gautam
2018-12-04 6:22 ` [PATCH v19 5/5] iommu/arm-smmu: Add support for qcom, smmu-v2 variant Vivek Gautam
2018-12-04 6:22 ` [PATCH v19 5/5] iommu/arm-smmu: Add support for qcom,smmu-v2 variant Vivek Gautam
2018-12-04 6:22 ` [PATCH v19 4/5] dt-bindings: arm-smmu: Add bindings for qcom,smmu-v2 Vivek Gautam
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