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Iris devices require their own bus so that each device can run its own dma_configure() logic. Signed-off-by: Vikash Garodia Signed-off-by: Vishnu Reddy --- 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 61c12ba78206..d8ed6ef70ecd 100644 --- a/drivers/iommu/iommu.c +++ b/drivers/iommu/iommu.c @@ -13,6 +13,7 @@ #include #include #include +#include #include #include #include @@ -179,6 +180,9 @@ 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 2abbd3aeb4af..6f4052b98491 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 000000000000..b51bb4b82b0e --- /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) Qualcomm Innovation Center, Inc. All rights reserved. + */ + +#include +#include + +#include "iris_platform_common.h" + +static int iris_vpu_bus_dma_configure(struct device *dev) +{ + const u32 *f_id = dev_get_drvdata(dev); + + if (!f_id) + return -ENODEV; + + return of_dma_configure_id(dev, dev->parent->of_node, true, f_id); +} + +const struct bus_type iris_vpu_bus_type = { + .name = "iris-vpu-bus", + .dma_configure = 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 000000000000..5704b226f7d6 --- /dev/null +++ b/include/linux/iris_vpu_bus.h @@ -0,0 +1,13 @@ +/* SPDX-License-Identifier: GPL-2.0-only */ +/* + * Copyright (c) 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__ */ -- 2.34.1