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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
Cc: alex.williamson@redhat.com, mark.rutland@arm.com,
	rjw@rjwysocki.net, robdclark@gmail.com, 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,
	Vivek Gautam <vivek.gautam@codeaurora.org>
Subject: [PATCH v16 3/5] iommu/arm-smmu: Add the device_link between masters and smmu
Date: Thu, 30 Aug 2018 20:15:39 +0530	[thread overview]
Message-ID: <20180830144541.17740-4-vivek.gautam@codeaurora.org> (raw)
In-Reply-To: <20180830144541.17740-1-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>
---
 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 1bf542010be7..166c8c6da24f 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


  parent reply	other threads:[~2018-08-30 14:46 UTC|newest]

Thread overview: 39+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2018-08-30 14:45 [PATCH v16 0/5] iommu/arm-smmu: Add runtime pm/sleep support Vivek Gautam
2018-08-30 14:45 ` [PATCH v16 1/5] iommu/arm-smmu: Add pm_runtime/sleep ops Vivek Gautam
2018-09-26 15:27   ` Robin Murphy
2018-09-27  8:31     ` Vivek Gautam
2018-09-28 11:59   ` Ulf Hansson
2018-10-01  5:49     ` Vivek Gautam
2018-10-01  9:38       ` Ulf Hansson
2018-10-01 10:21         ` Vivek Gautam
2018-10-01 10:32       ` Vivek Gautam
2018-10-01 12:02         ` Ulf Hansson
2018-08-30 14:45 ` [PATCH v16 2/5] iommu/arm-smmu: Invoke pm_runtime during probe, add/remove device Vivek Gautam
2018-09-07  9:16   ` Tomasz Figa
2018-09-07  9:38     ` Vivek Gautam
2018-09-07  9:52       ` Tomasz Figa
2018-09-07 10:22         ` Vivek Gautam
2018-09-18  3:11           ` Vivek Gautam
2018-09-25  5:56             ` Vivek Gautam
2018-09-25 18:55               ` Robin Murphy
2018-09-26  6:22                 ` Vivek Gautam
2018-09-26 15:42   ` Robin Murphy
2018-10-01 12:58   ` Will Deacon
2018-10-02  4:14     ` Vivek Gautam
2018-10-02  5:28       ` Vivek Gautam
2018-10-02  7:12         ` [PATCH v17 " Vivek Gautam
2018-08-30 14:45 ` Vivek Gautam [this message]
2018-09-26 15:44   ` [PATCH v16 3/5] iommu/arm-smmu: Add the device_link between masters and smmu Robin Murphy
2018-08-30 14:45 ` [PATCH v16 4/5] dt-bindings: arm-smmu: Add bindings for qcom,smmu-v2 Vivek Gautam
2018-09-06  3:52   ` Vivek Gautam
2018-09-10 18:02   ` Rob Herring
2018-09-11  8:34     ` Vivek Gautam
2018-09-26 15:46   ` Robin Murphy
2018-10-01 12:18   ` Will Deacon
2018-10-01 17:36     ` Rob Herring
2018-10-01 17:45       ` Will Deacon
2018-08-30 14:45 ` [PATCH v16 5/5] iommu/arm-smmu: Add support for qcom,smmu-v2 variant Vivek Gautam
2018-09-26 15:59   ` Robin Murphy
2018-09-27  6:55     ` Vivek Gautam
2018-09-28 13:57 ` [PATCH v16 0/5] iommu/arm-smmu: Add runtime pm/sleep support Will Deacon
2018-10-01  9:06   ` Vivek Gautam

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