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X-OriginatorOrg: amd.com X-MS-Exchange-CrossTenant-OriginalArrivalTime: 16 Dec 2025 09:13:55.5664 (UTC) X-MS-Exchange-CrossTenant-Network-Message-Id: 775adabc-48fd-4e14-f3a8-08de3c837056 X-MS-Exchange-CrossTenant-Id: 3dd8961f-e488-4e60-8e11-a82d994e183d X-MS-Exchange-CrossTenant-OriginalAttributedTenantConnectingIp: TenantId=3dd8961f-e488-4e60-8e11-a82d994e183d;Ip=[165.204.84.17];Helo=[satlexmb07.amd.com] X-MS-Exchange-CrossTenant-AuthSource: SA2PEPF00003AE4.namprd02.prod.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Anonymous X-MS-Exchange-CrossTenant-FromEntityHeader: HybridOnPrem X-MS-Exchange-Transport-CrossTenantHeadersStamped: DS5PPF5A66AFD1C Content-Type: text/plain; charset="utf-8" AMD isp4 capture is a v4l2 media device which implements media controller interface. It has one sub-device (AMD ISP4 sub-device) endpoint which can be connected to a remote CSI2 TX endpoint. It supports only one physical interface for now. Also add ISP4 driver related entry info into the MAINTAINERS file Co-developed-by: Sultan Alsawaf Signed-off-by: Sultan Alsawaf Co-developed-by: Svetoslav Stoilov Signed-off-by: Svetoslav Stoilov Signed-off-by: Bin Du Reviewed-by: Mario Limonciello (AMD) Tested-by: Alexey Zagorodnikov --- MAINTAINERS | 13 +++ drivers/media/platform/Kconfig | 1 + drivers/media/platform/Makefile | 1 + drivers/media/platform/amd/Kconfig | 3 + drivers/media/platform/amd/Makefile | 3 + drivers/media/platform/amd/isp4/Kconfig | 14 +++ drivers/media/platform/amd/isp4/Makefile | 6 ++ drivers/media/platform/amd/isp4/isp4.c | 132 +++++++++++++++++++++++ drivers/media/platform/amd/isp4/isp4.h | 17 +++ 9 files changed, 190 insertions(+) create mode 100644 drivers/media/platform/amd/Kconfig create mode 100644 drivers/media/platform/amd/Makefile create mode 100644 drivers/media/platform/amd/isp4/Kconfig create mode 100644 drivers/media/platform/amd/isp4/Makefile create mode 100644 drivers/media/platform/amd/isp4/isp4.c create mode 100644 drivers/media/platform/amd/isp4/isp4.h diff --git a/MAINTAINERS b/MAINTAINERS index cd7ff55b5d32..3640a1e3262c 100644 --- a/MAINTAINERS +++ b/MAINTAINERS @@ -1133,6 +1133,19 @@ T: git git://git.kernel.org/pub/scm/linux/kernel/git= /iommu/linux.git F: drivers/iommu/amd/ F: include/linux/amd-iommu.h =20 +AMD ISP4 DRIVER +M: Bin Du +M: Nirujogi Pratap +L: linux-media@vger.kernel.org +S: Maintained +T: git git://linuxtv.org/media.git +F: drivers/media/platform/amd/Kconfig +F: drivers/media/platform/amd/Makefile +F: drivers/media/platform/amd/isp4/Kconfig +F: drivers/media/platform/amd/isp4/Makefile +F: drivers/media/platform/amd/isp4/isp4.c +F: drivers/media/platform/amd/isp4/isp4.h + AMD KFD M: Felix Kuehling L: amd-gfx@lists.freedesktop.org diff --git a/drivers/media/platform/Kconfig b/drivers/media/platform/Kconfig index 9287faafdce5..772c70665510 100644 --- a/drivers/media/platform/Kconfig +++ b/drivers/media/platform/Kconfig @@ -63,6 +63,7 @@ config VIDEO_MUX =20 # Platform drivers - Please keep it alphabetically sorted source "drivers/media/platform/allegro-dvt/Kconfig" +source "drivers/media/platform/amd/Kconfig" source "drivers/media/platform/amlogic/Kconfig" source "drivers/media/platform/amphion/Kconfig" source "drivers/media/platform/aspeed/Kconfig" diff --git a/drivers/media/platform/Makefile b/drivers/media/platform/Makef= ile index 6fd7db0541c7..b207bd8d8022 100644 --- a/drivers/media/platform/Makefile +++ b/drivers/media/platform/Makefile @@ -6,6 +6,7 @@ # Place here, alphabetically sorted by directory # (e. g. LC_ALL=3DC sort Makefile) obj-y +=3D allegro-dvt/ +obj-y +=3D amd/ obj-y +=3D amlogic/ obj-y +=3D amphion/ obj-y +=3D aspeed/ diff --git a/drivers/media/platform/amd/Kconfig b/drivers/media/platform/am= d/Kconfig new file mode 100644 index 000000000000..25af49f246b2 --- /dev/null +++ b/drivers/media/platform/amd/Kconfig @@ -0,0 +1,3 @@ +# SPDX-License-Identifier: GPL-2.0+ + +source "drivers/media/platform/amd/isp4/Kconfig" diff --git a/drivers/media/platform/amd/Makefile b/drivers/media/platform/a= md/Makefile new file mode 100644 index 000000000000..8bfc1955f22e --- /dev/null +++ b/drivers/media/platform/amd/Makefile @@ -0,0 +1,3 @@ +# SPDX-License-Identifier: GPL-2.0+ + +obj-y +=3D isp4/ diff --git a/drivers/media/platform/amd/isp4/Kconfig b/drivers/media/platfo= rm/amd/isp4/Kconfig new file mode 100644 index 000000000000..d4e4ad436600 --- /dev/null +++ b/drivers/media/platform/amd/isp4/Kconfig @@ -0,0 +1,14 @@ +# SPDX-License-Identifier: GPL-2.0+ + +config AMD_ISP4 + tristate "AMD ISP4 and camera driver" + depends on DRM_AMD_ISP && VIDEO_DEV + select VIDEOBUF2_CORE + select VIDEOBUF2_MEMOPS + select VIDEOBUF2_V4L2 + select VIDEO_V4L2_SUBDEV_API + help + This is support for AMD ISP4 and camera subsystem driver. + Say Y here to enable the ISP4 and camera device for video capture. + To compile this driver as a module, choose M here. The module will + be called amd_capture. diff --git a/drivers/media/platform/amd/isp4/Makefile b/drivers/media/platf= orm/amd/isp4/Makefile new file mode 100644 index 000000000000..de0092dad26f --- /dev/null +++ b/drivers/media/platform/amd/isp4/Makefile @@ -0,0 +1,6 @@ +# SPDX-License-Identifier: GPL-2.0+ +# +# Copyright (C) 2025 Advanced Micro Devices, Inc. + +obj-$(CONFIG_AMD_ISP4) +=3D amd_capture.o +amd_capture-objs :=3D isp4.o diff --git a/drivers/media/platform/amd/isp4/isp4.c b/drivers/media/platfor= m/amd/isp4/isp4.c new file mode 100644 index 000000000000..ad95e7f89189 --- /dev/null +++ b/drivers/media/platform/amd/isp4/isp4.c @@ -0,0 +1,132 @@ +// SPDX-License-Identifier: GPL-2.0+ +/* + * Copyright (C) 2025 Advanced Micro Devices, Inc. + */ + +#include +#include +#include + +#include "isp4.h" + +#define VIDEO_BUF_NUM 5 + +#define ISP4_DRV_NAME "amd_isp_capture" + +static const struct { + const char *name; + u32 status_mask; + u32 en_mask; + u32 ack_mask; + u32 rb_int_num; +} isp4_irq[] =3D { + /* The IRQ order is aligned with the isp4_subdev.fw_resp_thread order */ + { + .name =3D "isp_irq_global", + .rb_int_num =3D 4, /* ISP_4_1__SRCID__ISP_RINGBUFFER_WPT12 */ + }, + { + .name =3D "isp_irq_stream1", + .rb_int_num =3D 0, /* ISP_4_1__SRCID__ISP_RINGBUFFER_WPT9 */ + }, +}; + +static irqreturn_t isp4_irq_handler(int irq, void *arg) +{ + return IRQ_HANDLED; +} + +static int isp4_capture_probe(struct platform_device *pdev) +{ + struct device *dev =3D &pdev->dev; + int irq[ARRAY_SIZE(isp4_irq)]; + struct isp4_device *isp_dev; + size_t i; + int ret; + + isp_dev =3D devm_kzalloc(dev, sizeof(*isp_dev), GFP_KERNEL); + if (!isp_dev) + return -ENOMEM; + + dev->init_name =3D ISP4_DRV_NAME; + + for (i =3D 0; i < ARRAY_SIZE(isp4_irq); i++) { + irq[i] =3D platform_get_irq(pdev, isp4_irq[i].rb_int_num); + if (irq[i] < 0) + return dev_err_probe(dev, irq[i], "fail to get irq %d\n", + isp4_irq[i].rb_int_num); + + ret =3D devm_request_irq(dev, irq[i], isp4_irq_handler, + IRQF_NO_AUTOEN, isp4_irq[i].name, dev); + if (ret) + return dev_err_probe(dev, ret, "fail to req irq %d\n", irq[i]); + } + + /* Link the media device within the v4l2_device */ + isp_dev->v4l2_dev.mdev =3D &isp_dev->mdev; + + /* Initialize media device */ + strscpy(isp_dev->mdev.model, "amd_isp41_mdev", sizeof(isp_dev->mdev.model= )); + snprintf(isp_dev->mdev.bus_info, sizeof(isp_dev->mdev.bus_info), + "platform:%s", ISP4_DRV_NAME); + isp_dev->mdev.dev =3D dev; + media_device_init(&isp_dev->mdev); + + /* register v4l2 device */ + snprintf(isp_dev->v4l2_dev.name, sizeof(isp_dev->v4l2_dev.name), + "AMD-V4L2-ROOT"); + ret =3D v4l2_device_register(dev, &isp_dev->v4l2_dev); + if (ret) { + dev_err_probe(dev, ret, "fail register v4l2 device\n"); + goto err_clean_media; + } + + pm_runtime_set_suspended(dev); + pm_runtime_enable(dev); + ret =3D media_device_register(&isp_dev->mdev); + if (ret) { + dev_err_probe(dev, ret, "fail to register media device\n"); + goto err_isp4_deinit; + } + + platform_set_drvdata(pdev, isp_dev); + + return 0; + +err_isp4_deinit: + pm_runtime_disable(dev); + v4l2_device_unregister(&isp_dev->v4l2_dev); +err_clean_media: + media_device_cleanup(&isp_dev->mdev); + + return ret; +} + +static void isp4_capture_remove(struct platform_device *pdev) +{ + struct isp4_device *isp_dev =3D platform_get_drvdata(pdev); + struct device *dev =3D &pdev->dev; + + media_device_unregister(&isp_dev->mdev); + pm_runtime_disable(dev); + v4l2_device_unregister(&isp_dev->v4l2_dev); + media_device_cleanup(&isp_dev->mdev); +} + +static struct platform_driver isp4_capture_drv =3D { + .probe =3D isp4_capture_probe, + .remove =3D isp4_capture_remove, + .driver =3D { + .name =3D ISP4_DRV_NAME, + } +}; + +module_platform_driver(isp4_capture_drv); + +MODULE_ALIAS("platform:" ISP4_DRV_NAME); +MODULE_IMPORT_NS("DMA_BUF"); + +MODULE_DESCRIPTION("AMD ISP4 Driver"); +MODULE_AUTHOR("Bin Du "); +MODULE_AUTHOR("Pratap Nirujogi "); +MODULE_LICENSE("GPL"); diff --git a/drivers/media/platform/amd/isp4/isp4.h b/drivers/media/platfor= m/amd/isp4/isp4.h new file mode 100644 index 000000000000..7f2db0dfa2d9 --- /dev/null +++ b/drivers/media/platform/amd/isp4/isp4.h @@ -0,0 +1,17 @@ +/* SPDX-License-Identifier: GPL-2.0+ */ +/* + * Copyright (C) 2025 Advanced Micro Devices, Inc. + */ + +#ifndef _ISP4_H_ +#define _ISP4_H_ + +#include +#include + +struct isp4_device { + struct v4l2_device v4l2_dev; + struct media_device mdev; +}; + +#endif /* _ISP4_H_ */ --=20 2.34.1