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Fri, 27 Feb 2026 06:12:06 -0800 (PST) Received: from hu-vgarodia-hyd.qualcomm.com ([202.46.23.25]) by smtp.gmail.com with ESMTPSA id d9443c01a7336-2adfb5c183bsm60960865ad.24.2026.02.27.06.12.00 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Fri, 27 Feb 2026 06:12:05 -0800 (PST) From: Vikash Garodia Date: Fri, 27 Feb 2026 19:41:19 +0530 Subject: [PATCH v2 3/7] media: iris: add iris vpu bus support and register it with iommu_buses Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: quoted-printable Message-Id: <20260227-kaanapali-iris-v2-3-850043ac3933@oss.qualcomm.com> References: <20260227-kaanapali-iris-v2-0-850043ac3933@oss.qualcomm.com> In-Reply-To: <20260227-kaanapali-iris-v2-0-850043ac3933@oss.qualcomm.com> To: Dikshita Agarwal , Abhinav Kumar , Bryan O'Donoghue , Mauro Carvalho Chehab , Rob Herring , Krzysztof Kozlowski , Conor Dooley , Saravana Kannan , Joerg Roedel , Will Deacon , Robin Murphy , Stefan Schmidt , Hans Verkuil , Krzysztof Kozlowski , Vishnu Reddy , Hans Verkuil Cc: linux-arm-msm@vger.kernel.org, linux-media@vger.kernel.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, iommu@lists.linux.dev, Bryan O'Donoghue , Vikash Garodia X-Mailer: b4 0.14.2 X-Developer-Signature: v=1; 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Iris devices need their own bus so that each iris device can run its own dma_configure() logic. Co-developed-by: Vishnu Reddy Signed-off-by: Vishnu Reddy Signed-off-by: Vikash Garodia --- drivers/iommu/iommu.c | 4 ++++ drivers/media/platform/qcom/iris/Makefile | 4 ++++ drivers/media/platform/qcom/iris/iris_vpu_bus.c | 32 +++++++++++++++++++++= ++++ include/linux/iris_vpu_bus.h | 13 ++++++++++ 4 files changed, 53 insertions(+) diff --git a/drivers/iommu/iommu.c b/drivers/iommu/iommu.c index 35db5178095404fec87cd0f18e44ea97cf354e78..fd5fb7c10da22ab548d359ca1f4= 4504acc3d646c 100644 --- a/drivers/iommu/iommu.c +++ b/drivers/iommu/iommu.c @@ -13,6 +13,7 @@ #include #include #include +#include #include #include #include @@ -178,6 +179,9 @@ static const struct bus_type * const iommu_buses[] =3D { #ifdef CONFIG_CDX_BUS &cdx_bus_type, #endif +#if IS_ENABLED(CONFIG_VIDEO_QCOM_IRIS) + &iris_vpu_bus_type, +#endif }; =20 /* diff --git a/drivers/media/platform/qcom/iris/Makefile b/drivers/media/plat= form/qcom/iris/Makefile index 2abbd3aeb4af07e52bf372a4b2f352463529c92c..6f4052b98491aeddc299669334d= 4c93e9a3420e4 100644 --- a/drivers/media/platform/qcom/iris/Makefile +++ b/drivers/media/platform/qcom/iris/Makefile @@ -31,3 +31,7 @@ qcom-iris-objs +=3D iris_platform_gen1.o endif =20 obj-$(CONFIG_VIDEO_QCOM_IRIS) +=3D qcom-iris.o + +ifdef CONFIG_VIDEO_QCOM_IRIS +obj-y +=3D iris_vpu_bus.o +endif diff --git a/drivers/media/platform/qcom/iris/iris_vpu_bus.c b/drivers/medi= a/platform/qcom/iris/iris_vpu_bus.c new file mode 100644 index 0000000000000000000000000000000000000000..34ce78d9b0ff1feda15ba4f060a= 56d02749a0858 --- /dev/null +++ b/drivers/media/platform/qcom/iris/iris_vpu_bus.c @@ -0,0 +1,32 @@ +// SPDX-License-Identifier: GPL-2.0-only +/* + * Copyright (c) 2026 Qualcomm Innovation Center, Inc. All rights reserved. + */ + +#include +#include + +#include "iris_platform_common.h" + +static int iris_vpu_bus_dma_configure(struct device *dev) +{ + struct iris_context_bank *cb =3D dev_get_drvdata(dev); + + if (!cb) + return -ENODEV; + + return of_dma_configure_id(dev, dev->parent->of_node, true, &cb->f_id); +} + +const struct bus_type iris_vpu_bus_type =3D { + .name =3D "iris-bus", + .dma_configure =3D iris_vpu_bus_dma_configure, +}; +EXPORT_SYMBOL_GPL(iris_vpu_bus_type); + +static int __init iris_vpu_bus_init(void) +{ + return bus_register(&iris_vpu_bus_type); +} + +postcore_initcall(iris_vpu_bus_init); diff --git a/include/linux/iris_vpu_bus.h b/include/linux/iris_vpu_bus.h new file mode 100644 index 0000000000000000000000000000000000000000..8aba472fcadd269e196b7243da5= 660deaff31abb --- /dev/null +++ b/include/linux/iris_vpu_bus.h @@ -0,0 +1,13 @@ +/* SPDX-License-Identifier: GPL-2.0-only + * + * Copyright (c) 2026 Qualcomm Innovation Center, Inc. All rights reserved. + */ + +#ifndef __IRIS_VPU_BUS_H__ +#define __IRIS_VPU_BUS_H__ + +#if IS_ENABLED(CONFIG_VIDEO_QCOM_IRIS) +extern const struct bus_type iris_vpu_bus_type; +#endif + +#endif /* __IRIS_VPU_BUS_H__ */ --=20 2.34.1