From: Yong Wu <yong.wu@mediatek.com>
To: Joerg Roedel <joro@8bytes.org>,
Matthias Brugger <matthias.bgg@gmail.com>,
Rob Herring <robh+dt@kernel.org>,
Robin Murphy <robin.murphy@arm.com>,
Krzysztof Kozlowski <krzk@kernel.org>,
Will Deacon <will@kernel.org>
Cc: Evan Green <evgreen@chromium.org>, Tomasz Figa <tfiga@google.com>,
<linux-mediatek@lists.infradead.org>,
<srv_heupstream@mediatek.com>, <devicetree@vger.kernel.org>,
<linux-kernel@vger.kernel.org>,
<linux-arm-kernel@lists.infradead.org>,
<iommu@lists.linux-foundation.org>, <yong.wu@mediatek.com>,
<youlin.pei@mediatek.com>,
Nicolas Boichat <drinkcat@chromium.org>, <anan.sun@mediatek.com>,
<chao.hao@mediatek.com>, <ming-fan.chen@mediatek.com>,
Greg Kroah-Hartman <gregkh@google.com>, <kernel-team@android.com>
Subject: [PATCH v3 14/24] iommu/mediatek: Add pm runtime callback
Date: Wed, 30 Sep 2020 15:06:37 +0800 [thread overview]
Message-ID: <20200930070647.10188-15-yong.wu@mediatek.com> (raw)
In-Reply-To: <20200930070647.10188-1-yong.wu@mediatek.com>
This patch adds pm runtime callback.
In pm runtime case, all the registers backup/restore and bclk are
controlled in the pm_runtime callback, then pm_suspend is not needed in
this case.
runtime PM is disabled when suspend, thus we call
pm_runtime_status_suspended instead of pm_runtime_suspended.
And, m4u doesn't have its special pm runtime domain in previous SoC, in
this case dev->power.runtime_status is RPM_SUSPENDED defaultly, thus add
a "dev->pm_domain" checking for the SoC that has pm runtime domain.
Signed-off-by: Yong Wu <yong.wu@mediatek.com>
---
drivers/iommu/mtk_iommu.c | 22 ++++++++++++++++++++--
1 file changed, 20 insertions(+), 2 deletions(-)
diff --git a/drivers/iommu/mtk_iommu.c b/drivers/iommu/mtk_iommu.c
index 5625458b21ba..052eb72acf69 100644
--- a/drivers/iommu/mtk_iommu.c
+++ b/drivers/iommu/mtk_iommu.c
@@ -770,7 +770,7 @@ static int mtk_iommu_remove(struct platform_device *pdev)
return 0;
}
-static int __maybe_unused mtk_iommu_suspend(struct device *dev)
+static int __maybe_unused mtk_iommu_runtime_suspend(struct device *dev)
{
struct mtk_iommu_data *data = dev_get_drvdata(dev);
struct mtk_iommu_suspend_reg *reg = &data->reg;
@@ -788,7 +788,7 @@ static int __maybe_unused mtk_iommu_suspend(struct device *dev)
return 0;
}
-static int __maybe_unused mtk_iommu_resume(struct device *dev)
+static int __maybe_unused mtk_iommu_runtime_resume(struct device *dev)
{
struct mtk_iommu_data *data = dev_get_drvdata(dev);
struct mtk_iommu_suspend_reg *reg = &data->reg;
@@ -815,7 +815,25 @@ static int __maybe_unused mtk_iommu_resume(struct device *dev)
return 0;
}
+static int __maybe_unused mtk_iommu_suspend(struct device *dev)
+{
+ /* runtime PM is disabled when suspend in pm_runtime case. */
+ if (dev->pm_domain && pm_runtime_status_suspended(dev))
+ return 0;
+
+ return mtk_iommu_runtime_suspend(dev);
+}
+
+static int __maybe_unused mtk_iommu_resume(struct device *dev)
+{
+ if (dev->pm_domain && pm_runtime_status_suspended(dev))
+ return 0;
+
+ return mtk_iommu_runtime_resume(dev);
+}
+
static const struct dev_pm_ops mtk_iommu_pm_ops = {
+ SET_RUNTIME_PM_OPS(mtk_iommu_runtime_suspend, mtk_iommu_runtime_resume, NULL)
SET_NOIRQ_SYSTEM_SLEEP_PM_OPS(mtk_iommu_suspend, mtk_iommu_resume)
};
--
2.18.0
next prev parent reply other threads:[~2020-09-30 7:09 UTC|newest]
Thread overview: 54+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-09-30 7:06 [PATCH v3 00/24] MT8192 IOMMU support Yong Wu
2020-09-30 7:06 ` [PATCH v3 01/24] dt-bindings: iommu: mediatek: Convert IOMMU to DT schema Yong Wu
2020-10-02 10:58 ` Krzysztof Kozlowski
2020-10-02 11:07 ` Krzysztof Kozlowski
2020-10-06 4:26 ` Yong Wu
2020-10-12 17:08 ` Krzysztof Kozlowski
2020-10-13 7:53 ` Yong Wu
2020-09-30 7:06 ` [PATCH v3 02/24] dt-bindings: memory: mediatek: Convert SMI " Yong Wu
2020-10-02 11:04 ` Krzysztof Kozlowski
2020-10-02 11:08 ` Krzysztof Kozlowski
2020-10-06 4:27 ` Yong Wu
2020-10-06 7:15 ` Krzysztof Kozlowski
2020-10-10 6:18 ` Yong Wu
2020-10-12 7:18 ` Krzysztof Kozlowski
2020-10-12 12:01 ` Yong Wu
2020-10-12 13:26 ` Krzysztof Kozlowski
2020-10-13 7:53 ` Yong Wu
2020-09-30 7:06 ` [PATCH v3 03/24] dt-bindings: memory: mediatek: Add a common larb-port header file Yong Wu
2020-09-30 7:06 ` [PATCH v3 04/24] dt-bindings: memory: mediatek: Extend LARB_NR_MAX to 32 Yong Wu
2020-09-30 7:06 ` [PATCH v3 05/24] dt-bindings: memory: mediatek: Add domain definition Yong Wu
2020-09-30 7:06 ` [PATCH v3 06/24] dt-bindings: mediatek: Add binding for mt8192 IOMMU Yong Wu
2020-10-02 11:10 ` Krzysztof Kozlowski
2020-10-06 4:26 ` Yong Wu
2020-10-06 7:19 ` Krzysztof Kozlowski
2020-09-30 7:06 ` [PATCH v3 07/24] iommu/mediatek: Use the common mtk-smi-larb-port.h Yong Wu
2020-09-30 7:06 ` [PATCH v3 08/24] iommu/io-pgtable-arm-v7s: Use ias to check the valid iova in unmap Yong Wu
2020-10-23 11:17 ` Will Deacon
2020-10-26 7:49 ` Yong Wu
2020-09-30 7:06 ` [PATCH v3 09/24] iommu/io-pgtable-arm-v7s: Extend PA34 for MediaTek Yong Wu
2020-10-23 11:22 ` Will Deacon
2020-09-30 7:06 ` [PATCH v3 10/24] iommu/io-pgtable-arm-v7s: Add cfg as a param in some macros Yong Wu
2020-10-23 11:23 ` Will Deacon
2020-09-30 7:06 ` [PATCH v3 11/24] iommu/io-pgtable-arm-v7s: Quad lvl1 pgtable for MediaTek Yong Wu
2020-10-23 11:21 ` Will Deacon
2020-10-26 7:45 ` Yong Wu
2020-10-23 14:10 ` Robin Murphy
2020-10-26 7:41 ` Yong Wu
2020-10-26 11:35 ` Robin Murphy
2020-09-30 7:06 ` [PATCH v3 12/24] iommu/mediatek: Move hw_init into attach_device Yong Wu
2020-09-30 7:06 ` [PATCH v3 13/24] iommu/mediatek: Add device link for smi-common and m4u Yong Wu
2020-09-30 7:06 ` Yong Wu [this message]
2020-09-30 7:06 ` [PATCH v3 15/24] iommu/mediatek: Add power-domain operation Yong Wu
2020-09-30 7:06 ` [PATCH v3 16/24] iommu/mediatek: Add iova reserved function Yong Wu
2020-09-30 7:06 ` [PATCH v3 17/24] iommu/mediatek: Add single domain Yong Wu
2020-09-30 7:06 ` [PATCH v3 18/24] iommu/mediatek: Support master use iova over 32bit Yong Wu
2020-10-06 7:18 ` Krzysztof Kozlowski
2020-09-30 7:06 ` [PATCH v3 19/24] iommu/mediatek: Support up to 34bit iova in tlb flush Yong Wu
2020-09-30 7:06 ` [PATCH v3 20/24] iommu/mediatek: Support report iova 34bit translation fault in ISR Yong Wu
2020-09-30 7:06 ` [PATCH v3 21/24] iommu/mediatek: Add support for multi domain Yong Wu
2020-09-30 7:06 ` [PATCH v3 22/24] iommu/mediatek: Adjust the structure Yong Wu
2020-09-30 7:06 ` [PATCH v3 23/24] iommu/mediatek: Add mt8192 support Yong Wu
2020-09-30 7:06 ` [PATCH v3 24/24] memory: mtk-smi: " Yong Wu
2020-10-02 11:15 ` Krzysztof Kozlowski
2020-10-26 20:08 ` [PATCH v3 00/24] MT8192 IOMMU support Krzysztof Kozlowski
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