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header.d=lists.infradead.org header.i=@lists.infradead.org header.b="PCxT2jUd"; dkim=fail reason="signature verification failed" (2048-bit key) header.d=gmail.com header.i=@gmail.com header.b="GUfY19w6" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 8E13B20873 Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=gmail.com Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=linux-arm-kernel-bounces+infradead-linux-arm-kernel=archiver.kernel.org@lists.infradead.org DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20170209; h=Sender: Content-Transfer-Encoding:Content-Type:Cc:List-Subscribe:List-Help:List-Post: List-Archive:List-Unsubscribe:List-Id:In-Reply-To:MIME-Version:Date: Message-ID:From:References:To:Subject:Reply-To:Content-ID:Content-Description :Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID: List-Owner; bh=2BCFBUk26NXQJumyleLIZGVjQWTDdWdKbnGkZypXMSA=; 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AN5hxlbNvNb9V2Zo5bFZjPWPFTxOteM0omUAS+QopwU0yPLLGJVf2iCmItHcUXI+r2JwH1CJ jrHWeQEI2ucSKsNa8FllDmG/fQ== Message-ID: <1af7b67a-b73a-efb9-e1f8-5701f05a4af0@gmail.com> Date: Tue, 18 Jun 2019 15:45:27 +0200 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:60.0) Gecko/20100101 Thunderbird/60.6.1 MIME-Version: 1.0 In-Reply-To: <1560169080-27134-18-git-send-email-yong.wu@mediatek.com> Content-Language: en-US X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20190618_064532_571403_8ABD46A8 X-CRM114-Status: GOOD ( 28.42 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: youlin.pei@mediatek.com, devicetree@vger.kernel.org, Nicolas Boichat , srv_heupstream@mediatek.com, Will Deacon , linux-kernel@vger.kernel.org, Evan Green , Tomasz Figa , iommu@lists.linux-foundation.org, Matthias Kaehlcke , linux-mediatek@lists.infradead.org, yingjoe.chen@mediatek.com, anan.sun@mediatek.com, linux-arm-kernel@lists.infradead.org Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+infradead-linux-arm-kernel=archiver.kernel.org@lists.infradead.org On 10/06/2019 14:17, Yong Wu wrote: > The "mediatek,larb-id" has already been parsed in MTK IOMMU driver. > It's no need to parse it again in SMI driver. Only clean some codes. > This patch is fit for all the current mt2701, mt2712, mt7623, mt8173 > and mt8183. > > After this patch, the "mediatek,larb-id" only be needed for mt2712 > which have 2 M4Us. In the other SoCs, we can get the larb-id from M4U > in which the larbs in the "mediatek,larbs" always are ordered. > > Correspondingly, the larb_nr in the "struct mtk_smi_iommu" could also > be deleted. > I think we can get rid of struct mtk_smi_iommu and just add the struct mtk_smi_larb_iommu larb_imu[MTK_LARB_NR_MAX] directly to mtk_iommu_data, passing just that array to the components bind function. Never the less this patch looks fine: Reviewed-by: Matthias Brugger > CC: Matthias Brugger > Signed-off-by: Yong Wu > Reviewed-by: Evan Green > --- > drivers/iommu/mtk_iommu.c | 1 - > drivers/iommu/mtk_iommu_v1.c | 2 -- > drivers/memory/mtk-smi.c | 26 ++------------------------ > include/soc/mediatek/smi.h | 1 - > 4 files changed, 2 insertions(+), 28 deletions(-) > > diff --git a/drivers/iommu/mtk_iommu.c b/drivers/iommu/mtk_iommu.c > index ec4ce74..6053b8b 100644 > --- a/drivers/iommu/mtk_iommu.c > +++ b/drivers/iommu/mtk_iommu.c > @@ -634,7 +634,6 @@ static int mtk_iommu_probe(struct platform_device *pdev) > "mediatek,larbs", NULL); > if (larb_nr < 0) > return larb_nr; > - data->smi_imu.larb_nr = larb_nr; > > for (i = 0; i < larb_nr; i++) { > struct device_node *larbnode; > diff --git a/drivers/iommu/mtk_iommu_v1.c b/drivers/iommu/mtk_iommu_v1.c > index 52b01e3..73308ad 100644 > --- a/drivers/iommu/mtk_iommu_v1.c > +++ b/drivers/iommu/mtk_iommu_v1.c > @@ -624,8 +624,6 @@ static int mtk_iommu_probe(struct platform_device *pdev) > larb_nr++; > } > > - data->smi_imu.larb_nr = larb_nr; > - > platform_set_drvdata(pdev, data); > > ret = mtk_iommu_hw_init(data); > diff --git a/drivers/memory/mtk-smi.c b/drivers/memory/mtk-smi.c > index 08cf40d..10e6493 100644 > --- a/drivers/memory/mtk-smi.c > +++ b/drivers/memory/mtk-smi.c > @@ -67,7 +67,6 @@ struct mtk_smi_common_plat { > }; > > struct mtk_smi_larb_gen { > - bool need_larbid; > int port_in_larb[MTK_LARB_NR_MAX + 1]; > void (*config_port)(struct device *); > unsigned int larb_direct_to_common_mask; > @@ -153,18 +152,9 @@ void mtk_smi_larb_put(struct device *larbdev) > struct mtk_smi_iommu *smi_iommu = data; > unsigned int i; > > - if (larb->larb_gen->need_larbid) { > - larb->mmu = &smi_iommu->larb_imu[larb->larbid].mmu; > - return 0; > - } > - > - /* > - * If there is no larbid property, Loop to find the corresponding > - * iommu information. > - */ > - for (i = 0; i < smi_iommu->larb_nr; i++) { > + for (i = 0; i < MTK_LARB_NR_MAX; i++) { > if (dev == smi_iommu->larb_imu[i].dev) { > - /* The 'mmu' may be updated in iommu-attach/detach. */ > + larb->larbid = i; > larb->mmu = &smi_iommu->larb_imu[i].mmu; > return 0; > } > @@ -243,7 +233,6 @@ static void mtk_smi_larb_config_port_gen1(struct device *dev) > }; > > static const struct mtk_smi_larb_gen mtk_smi_larb_mt2701 = { > - .need_larbid = true, > .port_in_larb = { > LARB0_PORT_OFFSET, LARB1_PORT_OFFSET, > LARB2_PORT_OFFSET, LARB3_PORT_OFFSET > @@ -252,7 +241,6 @@ static void mtk_smi_larb_config_port_gen1(struct device *dev) > }; > > static const struct mtk_smi_larb_gen mtk_smi_larb_mt2712 = { > - .need_larbid = true, > .config_port = mtk_smi_larb_config_port_gen2_general, > .larb_direct_to_common_mask = BIT(8) | BIT(9), /* bdpsys */ > }; > @@ -291,7 +279,6 @@ static int mtk_smi_larb_probe(struct platform_device *pdev) > struct device *dev = &pdev->dev; > struct device_node *smi_node; > struct platform_device *smi_pdev; > - int err; > > larb = devm_kzalloc(dev, sizeof(*larb), GFP_KERNEL); > if (!larb) > @@ -321,15 +308,6 @@ static int mtk_smi_larb_probe(struct platform_device *pdev) > } > larb->smi.dev = dev; > > - if (larb->larb_gen->need_larbid) { > - err = of_property_read_u32(dev->of_node, "mediatek,larb-id", > - &larb->larbid); > - if (err) { > - dev_err(dev, "missing larbid property\n"); > - return err; > - } > - } > - > smi_node = of_parse_phandle(dev->of_node, "mediatek,smi", 0); > if (!smi_node) > return -EINVAL; > diff --git a/include/soc/mediatek/smi.h b/include/soc/mediatek/smi.h > index 5201e90..a65324d 100644 > --- a/include/soc/mediatek/smi.h > +++ b/include/soc/mediatek/smi.h > @@ -29,7 +29,6 @@ struct mtk_smi_larb_iommu { > }; > > struct mtk_smi_iommu { > - unsigned int larb_nr; > struct mtk_smi_larb_iommu larb_imu[MTK_LARB_NR_MAX]; > }; > > _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel