Hello, This RFC patch series is adding Face Detection (FD) driver on Mediatek mt8183 SoC. It belongs to the first Mediatek's camera driver series based on V4L2 and media controller framework. I posted the main part of the FD driver as RFC to discuss first and would like some review comments. ============== Introduction ============== Face Detection (FD) unit provides hardware accelerated face detection feature. It can detect different sizes of faces in a given image. The driver is implemented as a normal V4L2 memory-to-memory device and supports V4L2 controls for detection settings. It has two buffer queues. 1. Video output buffer: RAW image for face detection. 2. Meta capture buffer: Result of the detected faces. ================== Changes in v3 ================== RFC v3 includes the following modification: 1. Adjust the private control ids and place them in include/uapi/linux/mtk-fd-v4l2-controls.h 2. Fixing review commnets in mtk_fd_40.c and mtk_fd.h 3. Define FD meta capture buffer in include/uapi/linux/videodev2.h 4. Remove the usage of get_reserved_memory by scp driver and use dma_alloc api instead Todo: - Add v4l2 control menus for private mtk fd control - Refine the job finish flow when system suspend ================== Changes in v2 ================== RFC v2 includes the following modification: 1. Implement FD as a V4L2 mem2mem driver 2. Replace meta input with V4L2 controls ================== Changes in v1 ================== RFC v1 includes the following modification: 1. Uses Request API instead of FD's buffer collection design 2. removed unnecessary abstraction structurally, including mtk_fd_ctx and related ops 3. removed the fd_smem node from device tree 4. Fixed the common issues Tomasz commented on Mediatek ISP Pass 1's RFC v0 patch series ================== Dependent patch ================== FD driver depends on SCP driver. The patches are as following: [1]. Add support for mt8183 SCP https://patchwork.kernel.org/cover/11132177/ ================== Compliance test ================== * Version: https://git.linuxtv.org/v4l-utils.git/commit/?id=b16f9e945d74aa5 * Note: Some of the failures are caused by the implementation of FD driver, which is a m2m device with VIDEO_OUT and META_CAPTURE queues, therefore we can't set V4L2_CAP_VIDEO_M2M in device capability, and fail in some non-m2m v4l2 test cases. * Test command: v4l2-compliance -m 0 * test output: v4l2-compliance SHA: not available, 32 bits Compliance test for mtk-fd-4.0 device /dev/media0: Media Driver Info: Driver name : mtk-fd-4.0 Model : mtk-fd-4.0 Serial : Bus info : platform:1502b000.fd Media version : 4.19.67 Hardware revision: 0x00000000 (0) Driver version : 4.19.67 Required ioctls: test MEDIA_IOC_DEVICE_INFO: OK Allow for multiple opens: test second /dev/media0 open: OK test MEDIA_IOC_DEVICE_INFO: OK test for unlimited opens: OK Media Controller ioctls: test MEDIA_IOC_G_TOPOLOGY: OK Entities: 3 Interfaces: 1 Pads: 4 Links: 4 test MEDIA_IOC_ENUM_ENTITIES/LINKS: OK test MEDIA_IOC_SETUP_LINK: OK Total for mtk-fd-4.0 device /dev/media0: 7, Succeeded: 7, Failed: 0, Warnings: 0 -------------------------------------------------------------------------------- Compliance test for mtk-fd-4.0 device /dev/video0: Driver Info: Driver name : mtk-fd-4.0 Card type : mtk-fd-4.0 Bus info : platform:1502b000.fd Driver version : 4.19.67 Capabilities : 0x84a02000 Video Output Multiplanar Metadata Capture Streaming Extended Pix Format Device Capabilities Device Caps : 0x04a02000 Video Output Multiplanar Metadata Capture Streaming Extended Pix Format Media Driver Info: Driver name : mtk-fd-4.0 Model : mtk-fd-4.0 Serial : Bus info : platform:1502b000.fd Media version : 4.19.67 Hardware revision: 0x00000000 (0) Driver version : 4.19.67 Interface Info: ID : 0x0300000c Type : V4L Video Entity Info: ID : 0x00000001 (1) Name : mtk-fd-4.0-source Function : V4L2 I/O Pad 0x01000002 : 0: Source Link 0x02000008: to remote pad 0x1000005 of entity 'mtk-fd-4.0-proc': Data, Enabled, Immutable Required ioctls: test MC information (see 'Media Driver Info' above): OK fail: v4l2-compliance.cpp(668): dcaps & output_caps test VIDIOC_QUERYCAP: FAIL Allow for multiple opens: test second /dev/video0 open: OK fail: v4l2-compliance.cpp(668): dcaps & output_caps test VIDIOC_QUERYCAP: FAIL test VIDIOC_G/S_PRIORITY: OK test for unlimited opens: OK Debug ioctls: test VIDIOC_DBG_G/S_REGISTER: OK (Not Supported) test VIDIOC_LOG_STATUS: OK (Not Supported) Input ioctls: test VIDIOC_G/S_TUNER/ENUM_FREQ_BANDS: OK (Not Supported) test VIDIOC_G/S_FREQUENCY: OK (Not Supported) test VIDIOC_S_HW_FREQ_SEEK: OK (Not Supported) test VIDIOC_ENUMAUDIO: OK (Not Supported) test VIDIOC_G/S/ENUMINPUT: OK (Not Supported) test VIDIOC_G/S_AUDIO: OK (Not Supported) Inputs: 0 Audio Inputs: 0 Tuners: 0 Output ioctls: test VIDIOC_G/S_MODULATOR: OK (Not Supported) test VIDIOC_G/S_FREQUENCY: OK (Not Supported) test VIDIOC_ENUMAUDOUT: OK (Not Supported) test VIDIOC_G/S/ENUMOUTPUT: OK (Not Supported) test VIDIOC_G/S_AUDOUT: OK (Not Supported) Outputs: 0 Audio Outputs: 0 Modulators: 0 Input/Output configuration ioctls: test VIDIOC_ENUM/G/S/QUERY_STD: OK (Not Supported) test VIDIOC_ENUM/G/S/QUERY_DV_TIMINGS: OK (Not Supported) test VIDIOC_DV_TIMINGS_CAP: OK (Not Supported) test VIDIOC_G/S_EDID: OK (Not Supported) Control ioctls: test VIDIOC_QUERY_EXT_CTRL/QUERYMENU: OK test VIDIOC_QUERYCTRL: OK test VIDIOC_G/S_CTRL: OK test VIDIOC_G/S/TRY_EXT_CTRLS: OK test VIDIOC_(UN)SUBSCRIBE_EVENT/DQEVENT: OK test VIDIOC_G/S_JPEGCOMP: OK (Not Supported) Standard Controls: 1 Private Controls: 6 Format ioctls: test VIDIOC_ENUM_FMT/FRAMESIZES/FRAMEINTERVALS: OK test VIDIOC_G/S_PARM: OK (Not Supported) test VIDIOC_G_FBUF: OK (Not Supported) fail: v4l2-test-formats.cpp(457): pixelformat 00000000 () for buftype 10 not reported by ENUM_FMT test VIDIOC_G_FMT: FAIL fail: v4l2-test-formats.cpp(457): pixelformat 00000000 () for buftype 10 not reported by ENUM_FMT test VIDIOC_TRY_FMT: FAIL fail: v4l2-test-formats.cpp(457): pixelformat ffffffff (-BE) for buftype 10 not reported by ENUM_FMT test VIDIOC_S_FMT: FAIL test VIDIOC_G_SLICED_VBI_CAP: OK (Not Supported) test Cropping: OK (Not Supported) test Composing: OK (Not Supported) test Scaling: OK (Not Supported) Codec ioctls: test VIDIOC_(TRY_)ENCODER_CMD: OK (Not Supported) test VIDIOC_G_ENC_INDEX: OK (Not Supported) test VIDIOC_(TRY_)DECODER_CMD: OK (Not Supported) Buffer ioctls: fail: v4l2-test-buffers.cpp(667): q2.reqbufs(node->node2, 1) != EBUSY test VIDIOC_REQBUFS/CREATE_BUFS/QUERYBUF: FAIL test VIDIOC_EXPBUF: OK test Requests: OK Total for mtk-fd-4.0 device /dev/video0: 45, Succeeded: 39, Failed: 6, Warnings: 0 Grand Total for mtk-fd-4.0 device /dev/media0: 52, Succeeded: 46, Failed: 6, Warnings: 0
