From: Sricharan R <sricharan@codeaurora.org> To: robin.murphy@arm.com, will.deacon@arm.com, joro@8bytes.org, iommu@lists.linux-foundation.org, linux-arm-kernel@lists.infradead.org, linux-arm-msm@vger.kernel.org, m.szyprowski@samsung.com, linux-clk@vger.kernel.org, sboyd@codeaurora.org, devicetree@vger.kernel.org, robh+dt@kernel.org, mathieu.poirier@linaro.org, mark.rutland@arm.com Cc: sricharan@codeaurora.org Subject: [PATCH V3 5/5] iommu/arm-smmu: Add the device_link between masters and smmu Date: Thu, 9 Mar 2017 21:05:48 +0530 [thread overview] Message-ID: <1489073748-3659-6-git-send-email-sricharan@codeaurora.org> (raw) In-Reply-To: <1489073748-3659-1-git-send-email-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> --- drivers/iommu/arm-smmu.c | 11 +++++++++++ 1 file changed, 11 insertions(+) diff --git a/drivers/iommu/arm-smmu.c b/drivers/iommu/arm-smmu.c index 6370421..b06f86c7 100644 --- a/drivers/iommu/arm-smmu.c +++ b/drivers/iommu/arm-smmu.c @@ -1671,6 +1671,7 @@ static int arm_smmu_add_device(struct device *dev) struct arm_smmu_device *smmu; struct arm_smmu_master_cfg *cfg; struct iommu_fwspec *fwspec = dev->iommu_fwspec; + struct device_link *link = NULL; int i, ret; unsigned long err; @@ -1727,6 +1728,16 @@ static int arm_smmu_add_device(struct device *dev) if (IS_ERR_VALUE(err)) goto out_free; + /* + * Establish the link between smmu and master, so that the + * smmu gets runtime enabled/disabled as per the master's + * needs. + */ + link = device_link_add(dev, smmu->dev, DL_FLAG_PM_RUNTIME); + if (!link) + dev_warn(smmu->dev, "Unable to create device link between %s and %s\n", + dev_name(smmu->dev), dev_name(dev)); + return 0; out_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: sricharan@codeaurora.org (Sricharan R) To: linux-arm-kernel@lists.infradead.org Subject: [PATCH V3 5/5] iommu/arm-smmu: Add the device_link between masters and smmu Date: Thu, 9 Mar 2017 21:05:48 +0530 [thread overview] Message-ID: <1489073748-3659-6-git-send-email-sricharan@codeaurora.org> (raw) In-Reply-To: <1489073748-3659-1-git-send-email-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> --- drivers/iommu/arm-smmu.c | 11 +++++++++++ 1 file changed, 11 insertions(+) diff --git a/drivers/iommu/arm-smmu.c b/drivers/iommu/arm-smmu.c index 6370421..b06f86c7 100644 --- a/drivers/iommu/arm-smmu.c +++ b/drivers/iommu/arm-smmu.c @@ -1671,6 +1671,7 @@ static int arm_smmu_add_device(struct device *dev) struct arm_smmu_device *smmu; struct arm_smmu_master_cfg *cfg; struct iommu_fwspec *fwspec = dev->iommu_fwspec; + struct device_link *link = NULL; int i, ret; unsigned long err; @@ -1727,6 +1728,16 @@ static int arm_smmu_add_device(struct device *dev) if (IS_ERR_VALUE(err)) goto out_free; + /* + * Establish the link between smmu and master, so that the + * smmu gets runtime enabled/disabled as per the master's + * needs. + */ + link = device_link_add(dev, smmu->dev, DL_FLAG_PM_RUNTIME); + if (!link) + dev_warn(smmu->dev, "Unable to create device link between %s and %s\n", + dev_name(smmu->dev), dev_name(dev)); + return 0; out_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:[~2017-03-09 15:35 UTC|newest] Thread overview: 47+ messages / expand[flat|nested] mbox.gz Atom feed top 2017-03-09 15:35 [PATCH V3 0/5] iommu/arm-smmu: Add runtime pm/sleep support Sricharan R 2017-03-09 15:35 ` Sricharan R 2017-03-09 15:35 ` [PATCH V3 1/5] iommu/arm-smmu: Add pm_runtime/sleep ops Sricharan R 2017-03-09 15:35 ` Sricharan R 2017-03-09 15:35 ` [PATCH V3 2/5] iommu/arm-smmu: Add support for MMU40x/500 clocks Sricharan R 2017-03-09 15:35 ` Sricharan R [not found] ` <1489073748-3659-3-git-send-email-sricharan-sgV2jX0FEOL9JmXXK+q4OQ@public.gmane.org> 2017-03-16 21:03 ` Rob Herring 2017-03-16 21:03 ` Rob Herring 2017-03-16 21:03 ` Rob Herring 2017-03-20 14:48 ` Sricharan R 2017-03-20 14:48 ` Sricharan R 2017-03-16 22:52 ` Rob Clark 2017-03-16 22:52 ` Rob Clark 2017-03-16 22:52 ` Rob Clark [not found] ` <CAF6AEGv3FAyWfXGT_8=bcn+UL8Ug1pE8EGu=MQC70U++wUOioA-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org> 2017-03-17 4:43 ` Sricharan R 2017-03-17 4:43 ` Sricharan R 2017-03-17 4:43 ` Sricharan R 2017-03-09 15:35 ` [PATCH V3 4/5] iommu/arm-smmu: Invoke pm_runtime during probe, add/remove device Sricharan R 2017-03-09 15:35 ` Sricharan R 2017-03-09 15:35 ` Sricharan R [this message] 2017-03-09 15:35 ` [PATCH V3 5/5] iommu/arm-smmu: Add the device_link between masters and smmu Sricharan R [not found] ` <1489073748-3659-1-git-send-email-sricharan-sgV2jX0FEOL9JmXXK+q4OQ@public.gmane.org> 2017-03-09 15:35 ` [PATCH V3 3/5] drivers: arm-smmu: Add clock support for QCOM_SMMUV2 Sricharan R 2017-03-09 15:35 ` Sricharan R 2017-03-09 15:35 ` Sricharan R 2017-03-16 21:10 ` Rob Herring 2017-03-16 21:10 ` Rob Herring 2017-03-20 14:31 ` Sricharan R 2017-03-20 14:31 ` Sricharan R 2017-03-20 14:31 ` Sricharan R 2017-03-31 17:54 ` [PATCH V3 0/5] iommu/arm-smmu: Add runtime pm/sleep support Will Deacon 2017-03-31 17:54 ` Will Deacon 2017-03-31 17:54 ` Will Deacon [not found] ` <20170331175457.GD4897-5wv7dgnIgG8@public.gmane.org> 2017-04-01 2:58 ` Rob Clark 2017-04-01 2:58 ` Rob Clark 2017-04-01 2:58 ` Rob Clark 2017-04-03 17:23 ` Will Deacon 2017-04-03 17:23 ` Will Deacon 2017-04-04 5:15 ` Sricharan R 2017-04-04 5:15 ` Sricharan R [not found] ` <20170403172307.GI5706-5wv7dgnIgG8@public.gmane.org> 2017-04-04 19:39 ` Stephen Boyd 2017-04-04 19:39 ` Stephen Boyd 2017-04-04 19:39 ` Stephen Boyd 2017-04-07 18:01 ` Jordan Crouse 2017-04-07 18:01 ` Jordan Crouse [not found] ` <20170407180105.GA22050-9PYrDHPZ2Orvke4nUoYGnHL1okKdlPRT@public.gmane.org> 2017-04-10 4:45 ` Sricharan R 2017-04-10 4:45 ` Sricharan R 2017-04-10 4:45 ` Sricharan R
Reply instructions: You may reply publicly to this message via plain-text email using any one of the following methods: * Save the following mbox file, import it into your mail client, and reply-to-all from there: mbox Avoid top-posting and favor interleaved quoting: https://en.wikipedia.org/wiki/Posting_style#Interleaved_style * Reply using the --to, --cc, and --in-reply-to switches of git-send-email(1): git send-email \ --in-reply-to=1489073748-3659-6-git-send-email-sricharan@codeaurora.org \ --to=sricharan@codeaurora.org \ --cc=devicetree@vger.kernel.org \ --cc=iommu@lists.linux-foundation.org \ --cc=joro@8bytes.org \ --cc=linux-arm-kernel@lists.infradead.org \ --cc=linux-arm-msm@vger.kernel.org \ --cc=linux-clk@vger.kernel.org \ --cc=m.szyprowski@samsung.com \ --cc=mark.rutland@arm.com \ --cc=mathieu.poirier@linaro.org \ --cc=robh+dt@kernel.org \ --cc=robin.murphy@arm.com \ --cc=sboyd@codeaurora.org \ --cc=will.deacon@arm.com \ /path/to/YOUR_REPLY https://kernel.org/pub/software/scm/git/docs/git-send-email.html * If your mail client supports setting the In-Reply-To header via mailto: links, try the mailto: linkBe sure your reply has a Subject: header at the top and a blank line before the message body.
This is an external index of several public inboxes, see mirroring instructions on how to clone and mirror all data and code used by this external index.