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, linux-kernel@vger.kernel.org,
freedreno@lists.freedesktop.org
Cc: alex.williamson@redhat.com, mark.rutland@arm.com,
rjw@rjwysocki.net, robdclark@gmail.com, andy.gross@linaro.org,
linux-pm@vger.kernel.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,
Vivek Gautam <vivek.gautam@codeaurora.org>
Subject: [Patch v15 3/5] iommu/arm-smmu: Add the device_link between masters and smmu
Date: Mon, 27 Aug 2018 16:25:49 +0530 [thread overview]
Message-ID: <20180827105551.16346-4-vivek.gautam@codeaurora.org> (raw)
In-Reply-To: <20180827105551.16346-1-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>
---
Changes since v14:
- 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 23b4a60149b6..b5e7f72d418c 100644
--- a/drivers/iommu/arm-smmu.c
+++ b/drivers/iommu/arm-smmu.c
@@ -1461,6 +1461,9 @@ 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:[~2018-08-27 10:57 UTC|newest]
Thread overview: 14+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-08-27 10:55 [Patch v15 0/5] iommu/arm-smmu: Add runtime pm/sleep support Vivek Gautam
2018-08-27 10:55 ` [Patch v15 1/5] iommu/arm-smmu: Add pm_runtime/sleep ops Vivek Gautam
2018-08-27 10:55 ` [Patch v15 2/5] iommu/arm-smmu: Invoke pm_runtime during probe, add/remove device Vivek Gautam
2018-08-30 9:22 ` Vivek Gautam
2018-08-30 9:33 ` Tomasz Figa
2018-08-30 13:59 ` Vivek Gautam
2018-08-27 10:55 ` Vivek Gautam [this message]
2018-08-27 10:55 ` [Patch v15 4/5] dt-bindings: arm-smmu: Add bindings for qcom,smmu-v2 Vivek Gautam
2018-08-28 20:34 ` Rob Herring
2018-08-29 8:35 ` Vivek Gautam
2018-08-29 11:23 ` Vivek Gautam
2018-08-30 0:43 ` Rob Herring
2018-08-31 9:51 ` Vivek Gautam
2018-08-27 10:55 ` [Patch v15 5/5] iommu/arm-smmu: Add support for qcom,smmu-v2 variant Vivek Gautam
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