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X-OriginatorOrg: amd.com X-MS-Exchange-CrossTenant-OriginalArrivalTime: 28 Aug 2025 10:08:45.5317 (UTC) X-MS-Exchange-CrossTenant-Network-Message-Id: 869ebd4c-e0e4-402c-cc92-08dde61adfdb 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=[SATLEXMB03.amd.com] X-MS-Exchange-CrossTenant-AuthSource: BN2PEPF000044A9.namprd04.prod.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Anonymous X-MS-Exchange-CrossTenant-FromEntityHeader: HybridOnPrem X-MS-Exchange-Transport-CrossTenantHeadersStamped: DS7PR12MB8275 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: Svetoslav Stoilov Signed-off-by: Svetoslav Stoilov Signed-off-by: Bin Du --- 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 | 13 +++ drivers/media/platform/amd/isp4/Makefile | 6 ++ drivers/media/platform/amd/isp4/isp4.c | 121 +++++++++++++++++++++++ drivers/media/platform/amd/isp4/isp4.h | 24 +++++ 9 files changed, 185 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 fe168477caa4..3ad845f1511b 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 +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 # 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/Makefile 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=C sort Makefile) obj-y += allegro-dvt/ +obj-y += amd/ obj-y += amlogic/ obj-y += amphion/ obj-y += aspeed/ diff --git a/drivers/media/platform/amd/Kconfig b/drivers/media/platform/amd/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/amd/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 += isp4/ diff --git a/drivers/media/platform/amd/isp4/Kconfig b/drivers/media/platform/amd/isp4/Kconfig new file mode 100644 index 000000000000..0268060c2dae --- /dev/null +++ b/drivers/media/platform/amd/isp4/Kconfig @@ -0,0 +1,13 @@ +# SPDX-License-Identifier: GPL-2.0+ + +config AMD_ISP4 + tristate "AMD ISP4 and camera driver" + depends on VIDEO_DEV && VIDEO_V4L2_SUBDEV_API + select VIDEOBUF2_CORE + select VIDEOBUF2_V4L2 + select VIDEOBUF2_MEMOPS + 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/platform/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) += amd_capture.o +amd_capture-objs := isp4.o diff --git a/drivers/media/platform/amd/isp4/isp4.c b/drivers/media/platform/amd/isp4/isp4.c new file mode 100644 index 000000000000..6ff3ded4310a --- /dev/null +++ b/drivers/media/platform/amd/isp4/isp4.c @@ -0,0 +1,121 @@ +// 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" + +/* interrupt num */ +static const u32 isp4_ringbuf_interrupt_num[] = { + 0, /* ISP_4_1__SRCID__ISP_RINGBUFFER_WPT9 */ + 1, /* ISP_4_1__SRCID__ISP_RINGBUFFER_WPT10 */ + 3, /* ISP_4_1__SRCID__ISP_RINGBUFFER_WPT11 */ + 4, /* ISP_4_1__SRCID__ISP_RINGBUFFER_WPT12 */ +}; + +#define to_isp4_device(dev) \ + ((struct isp4_device *)container_of(dev, struct isp4_device, v4l2_dev)) + +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 = &pdev->dev; + struct isp4_device *isp_dev; + int i, irq, ret; + + isp_dev = devm_kzalloc(&pdev->dev, sizeof(*isp_dev), GFP_KERNEL); + if (!isp_dev) + return -ENOMEM; + + isp_dev->pdev = pdev; + dev->init_name = ISP4_DRV_NAME; + + for (i = 0; i < ARRAY_SIZE(isp4_ringbuf_interrupt_num); i++) { + irq = platform_get_irq(pdev, isp4_ringbuf_interrupt_num[i]); + if (irq < 0) + return dev_err_probe(dev, -ENODEV, + "fail to get irq %d\n", + isp4_ringbuf_interrupt_num[i]); + ret = devm_request_irq(&pdev->dev, irq, isp4_irq_handler, 0, + "ISP_IRQ", &pdev->dev); + if (ret) + return dev_err_probe(dev, ret, "fail to req irq %d\n", + irq); + } + + /* Link the media device within the v4l2_device */ + isp_dev->v4l2_dev.mdev = &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 = &pdev->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 = v4l2_device_register(&pdev->dev, &isp_dev->v4l2_dev); + if (ret) + return dev_err_probe(dev, ret, + "fail register v4l2 device\n"); + + ret = media_device_register(&isp_dev->mdev); + if (ret) { + dev_err(dev, "fail to register media device %d\n", ret); + goto err_unreg_v4l2; + } + + platform_set_drvdata(pdev, isp_dev); + + pm_runtime_set_suspended(dev); + pm_runtime_enable(dev); + + return 0; + +err_unreg_v4l2: + v4l2_device_unregister(&isp_dev->v4l2_dev); + + return dev_err_probe(dev, ret, "isp probe fail\n"); +} + +static void isp4_capture_remove(struct platform_device *pdev) +{ + struct isp4_device *isp_dev = platform_get_drvdata(pdev); + + media_device_unregister(&isp_dev->mdev); + v4l2_device_unregister(&isp_dev->v4l2_dev); +} + +static struct platform_driver isp4_capture_drv = { + .probe = isp4_capture_probe, + .remove = isp4_capture_remove, + .driver = { + .name = ISP4_DRV_NAME, + .owner = THIS_MODULE, + } +}; + +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/platform/amd/isp4/isp4.h new file mode 100644 index 000000000000..8535f662ab49 --- /dev/null +++ b/drivers/media/platform/amd/isp4/isp4.h @@ -0,0 +1,24 @@ +/* SPDX-License-Identifier: GPL-2.0+ */ +/* + * Copyright (C) 2025 Advanced Micro Devices, Inc. + */ + +#ifndef _ISP4_H_ +#define _ISP4_H_ + +#include +#include +#include +#include + +#define ISP4_GET_ISP_REG_BASE(isp4sd) (((isp4sd))->mmio) + +struct isp4_device { + struct v4l2_device v4l2_dev; + struct media_device mdev; + + struct platform_device *pdev; + struct notifier_block i2c_nb; +}; + +#endif /* _ISP4_H_ */ -- 2.34.1