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Tue, 03 Mar 2026 10:27:04 -0800 (PST) X-Received: by 2002:a05:6a00:3a2a:b0:824:a81e:97b5 with SMTP id d2e1a72fcca58-8274d9f452emr17084650b3a.38.1772562423945; Tue, 03 Mar 2026 10:27:03 -0800 (PST) Received: from [192.168.0.172] ([49.205.248.49]) by smtp.gmail.com with ESMTPSA id d2e1a72fcca58-82739ff1ca9sm15764781b3a.36.2026.03.03.10.26.57 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Tue, 03 Mar 2026 10:27:03 -0800 (PST) Message-ID: <6dd03335-5fbe-4e01-9929-fcea8e5c0128@oss.qualcomm.com> Date: Tue, 3 Mar 2026 23:56:55 +0530 Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: Re: [PATCH v2 3/7] media: iris: add iris vpu bus support and register it with iommu_buses To: Krzysztof Kozlowski , 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 , 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 References: <20260227-kaanapali-iris-v2-0-850043ac3933@oss.qualcomm.com> <20260227-kaanapali-iris-v2-3-850043ac3933@oss.qualcomm.com> <20257f68-04cf-40fa-9f0b-bd798e62b7eb@kernel.org> Content-Language: en-US From: Vikash Garodia In-Reply-To: <20257f68-04cf-40fa-9f0b-bd798e62b7eb@kernel.org> Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 7bit X-Authority-Analysis: v=2.4 cv=M85A6iws c=1 sm=1 tr=0 ts=69a727fc cx=c_pps a=WW5sKcV1LcKqjgzy2JUPuA==:117 a=KPiuay1jFzAquJblYynD6w==:17 a=IkcTkHD0fZMA:10 a=Yq5XynenixoA:10 a=s4-Qcg_JpJYA:10 a=VkNPw1HP01LnGYTKEx00:22 a=u7WPNUs3qKkmUXheDGA7:22 a=yx91gb_oNiZeI1HMLzn7:22 a=EUspDBNiAAAA:8 a=lkRiF8b6XqOJfXNWt28A:9 a=QEXdDO2ut3YA:10 a=OpyuDcXvxspvyRM73sMx:22 X-Proofpoint-GUID: G4UdfCjMVdhbi87UsWoZ25nq6GnxLFu3 X-Proofpoint-ORIG-GUID: G4UdfCjMVdhbi87UsWoZ25nq6GnxLFu3 X-Proofpoint-Spam-Details-Enc: AW1haW4tMjYwMzAzMDE0OSBTYWx0ZWRfX8fBse+Bkyhh6 6hVzavvWWWgthu2XNpEjYhlhskBJOfCoGzOr3/GDPZ6B/qm2rByFKiShBk1NXb5YCj5hPL3gb4q lA2kjnwDV5Jrriw1KvzZH/bHo7RRwM6vlXw9JKUd4CV4q52iSuP9PE4wJxoapxAiOU2L/MaNP3y AoqqI3gk1foT+Wewj1pSddnQj4RXrcNMKdB/OZSCy6gtm3q4Kmfu2/98V5IZBRmylxA1gye96p/ awO6IW8tVkEd7Dj1GJ5K1a8LF5XgjLY6rk3WJhnlsE6mTIFH9uFB+A2fWxV/wNJtt9dn8wuVvTU tFw3Hd239zzxw1mv52he2XaxT0KGNdJt1VbEP/fCbvGParrV5bOeYqDNY8wgua0mMcdT9h4RKRT ULJsQeQRRfZnT6VZmzu+r7jX+oFsffFoONrWTWNYrC73SPd4F9ox5YhlN5bQIN5RtCh8u11rCCF 3mkkqFFIFUbYRu+o89Q== X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.293,Aquarius:18.0.1121,Hydra:6.1.51,FMLib:17.12.100.49 definitions=2026-03-03_02,2026-03-03_01,2025-10-01_01 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 phishscore=0 suspectscore=0 spamscore=0 malwarescore=0 adultscore=0 priorityscore=1501 impostorscore=0 bulkscore=0 lowpriorityscore=0 clxscore=1015 classifier=typeunknown authscore=0 authtc= authcc= route=outbound adjust=0 reason=mlx scancount=1 engine=8.22.0-2602130000 definitions=main-2603030149 On 2/27/2026 9:19 PM, Krzysztof Kozlowski wrote: > On 27/02/2026 15:11, Vikash Garodia wrote: >> Add iris vpu bus support and hooks the new bus into the iommu_buses >> list. 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..fd5fb7c10da22ab548d359ca1f44504acc3d646c 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[] = { >> #ifdef CONFIG_CDX_BUS >> &cdx_bus_type, >> #endif >> +#if IS_ENABLED(CONFIG_VIDEO_QCOM_IRIS) >> + &iris_vpu_bus_type, >> +#endif >> }; >> >> /* >> diff --git a/drivers/media/platform/qcom/iris/Makefile b/drivers/media/platform/qcom/iris/Makefile >> index 2abbd3aeb4af07e52bf372a4b2f352463529c92c..6f4052b98491aeddc299669334d4c93e9a3420e4 100644 >> --- a/drivers/media/platform/qcom/iris/Makefile >> +++ b/drivers/media/platform/qcom/iris/Makefile >> @@ -31,3 +31,7 @@ qcom-iris-objs += iris_platform_gen1.o >> endif >> >> obj-$(CONFIG_VIDEO_QCOM_IRIS) += qcom-iris.o >> + >> +ifdef CONFIG_VIDEO_QCOM_IRIS >> +obj-y += iris_vpu_bus.o >> +endif >> diff --git a/drivers/media/platform/qcom/iris/iris_vpu_bus.c b/drivers/media/platform/qcom/iris/iris_vpu_bus.c >> new file mode 100644 >> index 0000000000000000000000000000000000000000..34ce78d9b0ff1feda15ba4f060a56d02749a0858 >> --- /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 = dev_get_drvdata(dev); >> + >> + if (!cb) >> + return -ENODEV; >> + >> + return of_dma_configure_id(dev, dev->parent->of_node, true, &cb->f_id); > > > Apply this patch and build it. Does it build? it was incorrectly organized, since the struct was defined in subsequent patch. Will fix this in next revision. > > Best regards, > Krzysztof Regards, Vikash