From 5b7c4cabbb65f5c469464da6c5f614cbd7f730f2 Mon Sep 17 00:00:00 2001 From: Linus Torvalds Date: Tue, 21 Feb 2023 18:24:12 -0800 Subject: Merge tag 'net-next-6.3' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net-next Pull networking updates from Jakub Kicinski: "Core: - Add dedicated kmem_cache for typical/small skb->head, avoid having to access struct page at kfree time, and improve memory use. - Introduce sysctl to set default RPS configuration for new netdevs. - Define Netlink protocol specification format which can be used to describe messages used by each family and auto-generate parsers. Add tools for generating kernel data structures and uAPI headers. - Expose all net/core sysctls inside netns. - Remove 4s sleep in netpoll if carrier is instantly detected on boot. - Add configurable limit of MDB entries per port, and port-vlan. - Continue populating drop reasons throughout the stack. - Retire a handful of legacy Qdiscs and classifiers. Protocols: - Support IPv4 big TCP (TSO frames larger than 64kB). - Add IP_LOCAL_PORT_RANGE socket option, to control local port range on socket by socket basis. - Track and report in procfs number of MPTCP sockets used. - Support mixing IPv4 and IPv6 flows in the in-kernel MPTCP path manager. - IPv6: don't check net.ipv6.route.max_size and rely on garbage collection to free memory (similarly to IPv4). - Support Penultimate Segment Pop (PSP) flavor in SRv6 (RFC8986). - ICMP: add per-rate limit counters. - Add support for user scanning requests in ieee802154. - Remove static WEP support. - Support minimal Wi-Fi 7 Extremely High Throughput (EHT) rate reporting. - WiFi 7 EHT channel puncturing support (client & AP). BPF: - Add a rbtree data structure following the "next-gen data structure" precedent set by recently added linked list, that is, by using kfunc + kptr instead of adding a new BPF map type. - Expose XDP hints via kfuncs with initial support for RX hash and timestamp metadata. - Add BPF_F_NO_TUNNEL_KEY extension to bpf_skb_set_tunnel_key to better support decap on GRE tunnel devices not operating in collect metadata. - Improve x86 JIT's codegen for PROBE_MEM runtime error checks. - Remove the need for trace_printk_lock for bpf_trace_printk and bpf_trace_vprintk helpers. - Extend libbpf's bpf_tracing.h support for tracing arguments of kprobes/uprobes and syscall as a special case. - Significantly reduce the search time for module symbols by livepatch and BPF. - Enable cpumasks to be used as kptrs, which is useful for tracing programs tracking which tasks end up running on which CPUs in different time intervals. - Add support for BPF trampoline on s390x and riscv64. - Add capability to export the XDP features supported by the NIC. - Add __bpf_kfunc tag for marking kernel functions as kfuncs. - Add cgroup.memory=nobpf kernel parameter option to disable BPF memory accounting for container environments. Netfilter: - Remove the CLUSTERIP target. It has been marked as obsolete for years, and we still have WARN splats wrt races of the out-of-band /proc interface installed by this target. - Add 'destroy' commands to nf_tables. They are identical to the existing 'delete' commands, but do not return an error if the referenced object (set, chain, rule...) did not exist. Driver API: - Improve cpumask_local_spread() locality to help NICs set the right IRQ affinity on AMD platforms. - Separate C22 and C45 MDIO bus transactions more clearly. - Introduce new DCB table to control DSCP rewrite on egress. - Support configuration of Physical Layer Collision Avoidance (PLCA) Reconciliation Sublayer (RS) (802.3cg-2019). Modern version of shared medium Ethernet. - Support for MAC Merge layer (IEEE 802.3-2018 clause 99). Allowing preemption of low priority frames by high priority frames. - Add support for controlling MACSec offload using netlink SET. - Rework devlink instance refcounts to allow registration and de-registration under the instance lock. Split the code into multiple files, drop some of the unnecessarily granular locks and factor out common parts of netlink operation handling. - Add TX frame aggregation parameters (for USB drivers). - Add a new attr TCA_EXT_WARN_MSG to report TC (offload) warning messages with notifications for debug. - Allow offloading of UDP NEW connections via act_ct. - Add support for per action HW stats in TC. - Support hardware miss to TC action (continue processing in SW from a specific point in the action chain). - Warn if old Wireless Extension user space interface is used with modern cfg80211/mac80211 drivers. Do not support Wireless Extensions for Wi-Fi 7 devices at all. Everyone should switch to using nl80211 interface instead. - Improve the CAN bit timing configuration. Use extack to return error messages directly to user space, update the SJW handling, including the definition of a new default value that will benefit CAN-FD controllers, by increasing their oscillator tolerance. New hardware / drivers: - Ethernet: - nVidia BlueField-3 support (control traffic driver) - Ethernet support for imx93 SoCs - Motorcomm yt8531 gigabit Ethernet PHY - onsemi NCN26000 10BASE-T1S PHY (with support for PLCA) - Microchip LAN8841 PHY (incl. cable diagnostics and PTP) - Amlogic gxl MDIO mux - WiFi: - RealTek RTL8188EU (rtl8xxxu) - Qualcomm Wi-Fi 7 devices (ath12k) - CAN: - Renesas R-Car V4H Drivers: - Bluetooth: - Set Per Platform Antenna Gain (PPAG) for Intel controllers. - Ethernet NICs: - Intel (1G, igc): - support TSN / Qbv / packet scheduling features of i226 model - Intel (100G, ice): - use GNSS subsystem instead of TTY - multi-buffer XDP support - extend support for GPIO pins to E823 devices - nVidia/Mellanox: - update the shared buffer configuration on PFC commands - implement PTP adjphase function for HW offset control - TC support for Geneve and GRE with VF tunnel offload - more efficient crypto key management method - multi-port eswitch support - Netronome/Corigine: - add DCB IEEE support - support IPsec offloading for NFP3800 - Freescale/NXP (enetc): - support XDP_REDIRECT for XDP non-linear buffers - improve reconfig, avoid link flap and waiting for idle - support MAC Merge layer - Other NICs: - sfc/ef100: add basic devlink support for ef100 - ionic: rx_push mode operation (writing descriptors via MMIO) - bnxt: use the auxiliary bus abstraction for RDMA - r8169: disable ASPM and reset bus in case of tx timeout - cpsw: support QSGMII mode for J721e CPSW9G - cpts: support pulse-per-second output - ngbe: add an mdio bus driver - usbnet: optimize usbnet_bh() by avoiding unnecessary queuing - r8152: handle devices with FW with NCM support - amd-xgbe: support 10Mbps, 2.5GbE speeds and rx-adaptation - virtio-net: support multi buffer XDP - virtio/vsock: replace virtio_vsock_pkt with sk_buff - tsnep: XDP support - Ethernet high-speed switches: - nVidia/Mellanox (mlxsw): - add support for latency TLV (in FW control messages) - Microchip (sparx5): - separate explicit and implicit traffic forwarding rules, make the implicit rules always active - add support for egress DSCP rewrite - IS0 VCAP support (Ingress Classification) - IS2 VCAP filters (protos, L3 addrs, L4 ports, flags, ToS etc.) - ES2 VCAP support (Egress Access Control) - support for Per-Stream Filtering and Policing (802.1Q, 8.6.5.1) - Ethernet embedded switches: - Marvell (mv88e6xxx): - add MAB (port auth) offload support - enable PTP receive for mv88e6390 - NXP (ocelot): - support MAC Merge layer - support for the the vsc7512 internal copper phys - Microchip: - lan9303: convert to PHYLINK - lan966x: support TC flower filter statistics - lan937x: PTP support for KSZ9563/KSZ8563 and LAN937x - lan937x: support Credit Based Shaper configuration - ksz9477: support Energy Efficient Ethernet - other: - qca8k: convert to regmap read/write API, use bulk operations - rswitch: Improve TX timestamp accuracy - Intel WiFi (iwlwifi): - EHT (Wi-Fi 7) rate reporting - STEP equalizer support: transfer some STEP (connection to radio on platforms with integrated wifi) related parameters from the BIOS to the firmware. - Qualcomm 802.11ax WiFi (ath11k): - IPQ5018 support - Fine Timing Measurement (FTM) responder role support - channel 177 support - MediaTek WiFi (mt76): - per-PHY LED support - mt7996: EHT (Wi-Fi 7) support - Wireless Ethernet Dispatch (WED) reset support - switch to using page pool allocator - RealTek WiFi (rtw89): - support new version of Bluetooth co-existance - Mobile: - rmnet: support TX aggregation" * tag 'net-next-6.3' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net-next: (1872 commits) page_pool: add a comment explaining the fragment counter usage net: ethtool: fix __ethtool_dev_mm_supported() implementation ethtool: pse-pd: Fix double word in comments xsk: add linux/vmalloc.h to xsk.c sefltests: netdevsim: wait for devlink instance after netns removal selftest: fib_tests: Always cleanup before exit net/mlx5e: Align IPsec ASO result memory to be as required by hardware net/mlx5e: TC, Set CT miss to the specific ct action instance net/mlx5e: Rename CHAIN_TO_REG to MAPPED_OBJ_TO_REG net/mlx5: Refactor tc miss handling to a single function net/mlx5: Kconfig: Make tc offload depend on tc skb extension net/sched: flower: Support hardware miss to tc action net/sched: flower: Move filter handle initialization earlier net/sched: cls_api: Support hardware miss to tc action net/sched: Rename user cookie and act cookie sfc: fix builds without CONFIG_RTC_LIB sfc: clean up some inconsistent indentings net/mlx4_en: Introduce flexible array to silence overflow warning net: lan966x: Fix possible deadlock inside PTP net/ulp: Remove redundant ->clone() test in inet_clone_ulp(). ... --- drivers/media/test-drivers/vimc/vimc-capture.c | 500 +++++++++++++++++++++++++ 1 file changed, 500 insertions(+) create mode 100644 drivers/media/test-drivers/vimc/vimc-capture.c (limited to 'drivers/media/test-drivers/vimc/vimc-capture.c') diff --git a/drivers/media/test-drivers/vimc/vimc-capture.c b/drivers/media/test-drivers/vimc/vimc-capture.c new file mode 100644 index 000000000..aa944270e --- /dev/null +++ b/drivers/media/test-drivers/vimc/vimc-capture.c @@ -0,0 +1,500 @@ +// SPDX-License-Identifier: GPL-2.0-or-later +/* + * vimc-capture.c Virtual Media Controller Driver + * + * Copyright (C) 2015-2017 Helen Koike + */ + +#include +#include +#include +#include + +#include "vimc-common.h" +#include "vimc-streamer.h" + +struct vimc_capture_device { + struct vimc_ent_device ved; + struct video_device vdev; + struct v4l2_pix_format format; + struct vb2_queue queue; + struct list_head buf_list; + /* + * NOTE: in a real driver, a spin lock must be used to access the + * queue because the frames are generated from a hardware interruption + * and the isr is not allowed to sleep. + * Even if it is not necessary a spinlock in the vimc driver, we + * use it here as a code reference + */ + spinlock_t qlock; + struct mutex lock; + u32 sequence; + struct vimc_stream stream; + struct media_pad pad; +}; + +static const struct v4l2_pix_format fmt_default = { + .width = 640, + .height = 480, + .pixelformat = V4L2_PIX_FMT_RGB24, + .field = V4L2_FIELD_NONE, + .colorspace = V4L2_COLORSPACE_SRGB, +}; + +struct vimc_capture_buffer { + /* + * struct vb2_v4l2_buffer must be the first element + * the videobuf2 framework will allocate this struct based on + * buf_struct_size and use the first sizeof(struct vb2_buffer) bytes of + * memory as a vb2_buffer + */ + struct vb2_v4l2_buffer vb2; + struct list_head list; +}; + +static int vimc_capture_querycap(struct file *file, void *priv, + struct v4l2_capability *cap) +{ + strscpy(cap->driver, VIMC_PDEV_NAME, sizeof(cap->driver)); + strscpy(cap->card, KBUILD_MODNAME, sizeof(cap->card)); + snprintf(cap->bus_info, sizeof(cap->bus_info), + "platform:%s", VIMC_PDEV_NAME); + + return 0; +} + +static void vimc_capture_get_format(struct vimc_ent_device *ved, + struct v4l2_pix_format *fmt) +{ + struct vimc_capture_device *vcapture = container_of(ved, struct vimc_capture_device, + ved); + + *fmt = vcapture->format; +} + +static int vimc_capture_g_fmt_vid_cap(struct file *file, void *priv, + struct v4l2_format *f) +{ + struct vimc_capture_device *vcapture = video_drvdata(file); + + f->fmt.pix = vcapture->format; + + return 0; +} + +static int vimc_capture_try_fmt_vid_cap(struct file *file, void *priv, + struct v4l2_format *f) +{ + struct v4l2_pix_format *format = &f->fmt.pix; + const struct vimc_pix_map *vpix; + + format->width = clamp_t(u32, format->width, VIMC_FRAME_MIN_WIDTH, + VIMC_FRAME_MAX_WIDTH) & ~1; + format->height = clamp_t(u32, format->height, VIMC_FRAME_MIN_HEIGHT, + VIMC_FRAME_MAX_HEIGHT) & ~1; + + /* Don't accept a pixelformat that is not on the table */ + vpix = vimc_pix_map_by_pixelformat(format->pixelformat); + if (!vpix) { + format->pixelformat = fmt_default.pixelformat; + vpix = vimc_pix_map_by_pixelformat(format->pixelformat); + } + /* TODO: Add support for custom bytesperline values */ + format->bytesperline = format->width * vpix->bpp; + format->sizeimage = format->bytesperline * format->height; + + if (format->field == V4L2_FIELD_ANY) + format->field = fmt_default.field; + + vimc_colorimetry_clamp(format); + + if (format->colorspace == V4L2_COLORSPACE_DEFAULT) + format->colorspace = fmt_default.colorspace; + + return 0; +} + +static int vimc_capture_s_fmt_vid_cap(struct file *file, void *priv, + struct v4l2_format *f) +{ + struct vimc_capture_device *vcapture = video_drvdata(file); + int ret; + + /* Do not change the format while stream is on */ + if (vb2_is_busy(&vcapture->queue)) + return -EBUSY; + + ret = vimc_capture_try_fmt_vid_cap(file, priv, f); + if (ret) + return ret; + + dev_dbg(vcapture->ved.dev, "%s: format update: " + "old:%dx%d (0x%x, %d, %d, %d, %d) " + "new:%dx%d (0x%x, %d, %d, %d, %d)\n", vcapture->vdev.name, + /* old */ + vcapture->format.width, vcapture->format.height, + vcapture->format.pixelformat, vcapture->format.colorspace, + vcapture->format.quantization, vcapture->format.xfer_func, + vcapture->format.ycbcr_enc, + /* new */ + f->fmt.pix.width, f->fmt.pix.height, + f->fmt.pix.pixelformat, f->fmt.pix.colorspace, + f->fmt.pix.quantization, f->fmt.pix.xfer_func, + f->fmt.pix.ycbcr_enc); + + vcapture->format = f->fmt.pix; + + return 0; +} + +static int vimc_capture_enum_fmt_vid_cap(struct file *file, void *priv, + struct v4l2_fmtdesc *f) +{ + const struct vimc_pix_map *vpix; + + if (f->mbus_code) { + if (f->index > 0) + return -EINVAL; + + vpix = vimc_pix_map_by_code(f->mbus_code); + } else { + vpix = vimc_pix_map_by_index(f->index); + } + + if (!vpix) + return -EINVAL; + + f->pixelformat = vpix->pixelformat; + + return 0; +} + +static int vimc_capture_enum_framesizes(struct file *file, void *fh, + struct v4l2_frmsizeenum *fsize) +{ + const struct vimc_pix_map *vpix; + + if (fsize->index) + return -EINVAL; + + /* Only accept code in the pix map table */ + vpix = vimc_pix_map_by_code(fsize->pixel_format); + if (!vpix) + return -EINVAL; + + fsize->type = V4L2_FRMSIZE_TYPE_CONTINUOUS; + fsize->stepwise.min_width = VIMC_FRAME_MIN_WIDTH; + fsize->stepwise.max_width = VIMC_FRAME_MAX_WIDTH; + fsize->stepwise.min_height = VIMC_FRAME_MIN_HEIGHT; + fsize->stepwise.max_height = VIMC_FRAME_MAX_HEIGHT; + fsize->stepwise.step_width = 1; + fsize->stepwise.step_height = 1; + + return 0; +} + +static const struct v4l2_file_operations vimc_capture_fops = { + .owner = THIS_MODULE, + .open = v4l2_fh_open, + .release = vb2_fop_release, + .read = vb2_fop_read, + .poll = vb2_fop_poll, + .unlocked_ioctl = video_ioctl2, + .mmap = vb2_fop_mmap, +}; + +static const struct v4l2_ioctl_ops vimc_capture_ioctl_ops = { + .vidioc_querycap = vimc_capture_querycap, + + .vidioc_g_fmt_vid_cap = vimc_capture_g_fmt_vid_cap, + .vidioc_s_fmt_vid_cap = vimc_capture_s_fmt_vid_cap, + .vidioc_try_fmt_vid_cap = vimc_capture_try_fmt_vid_cap, + .vidioc_enum_fmt_vid_cap = vimc_capture_enum_fmt_vid_cap, + .vidioc_enum_framesizes = vimc_capture_enum_framesizes, + + .vidioc_reqbufs = vb2_ioctl_reqbufs, + .vidioc_create_bufs = vb2_ioctl_create_bufs, + .vidioc_prepare_buf = vb2_ioctl_prepare_buf, + .vidioc_querybuf = vb2_ioctl_querybuf, + .vidioc_qbuf = vb2_ioctl_qbuf, + .vidioc_dqbuf = vb2_ioctl_dqbuf, + .vidioc_expbuf = vb2_ioctl_expbuf, + .vidioc_streamon = vb2_ioctl_streamon, + .vidioc_streamoff = vb2_ioctl_streamoff, +}; + +static void vimc_capture_return_all_buffers(struct vimc_capture_device *vcapture, + enum vb2_buffer_state state) +{ + struct vimc_capture_buffer *vbuf, *node; + + spin_lock(&vcapture->qlock); + + list_for_each_entry_safe(vbuf, node, &vcapture->buf_list, list) { + list_del(&vbuf->list); + vb2_buffer_done(&vbuf->vb2.vb2_buf, state); + } + + spin_unlock(&vcapture->qlock); +} + +static int vimc_capture_start_streaming(struct vb2_queue *vq, unsigned int count) +{ + struct vimc_capture_device *vcapture = vb2_get_drv_priv(vq); + int ret; + + vcapture->sequence = 0; + + /* Start the media pipeline */ + ret = video_device_pipeline_start(&vcapture->vdev, &vcapture->stream.pipe); + if (ret) { + vimc_capture_return_all_buffers(vcapture, VB2_BUF_STATE_QUEUED); + return ret; + } + + ret = vimc_streamer_s_stream(&vcapture->stream, &vcapture->ved, 1); + if (ret) { + video_device_pipeline_stop(&vcapture->vdev); + vimc_capture_return_all_buffers(vcapture, VB2_BUF_STATE_QUEUED); + return ret; + } + + return 0; +} + +/* + * Stop the stream engine. Any remaining buffers in the stream queue are + * dequeued and passed on to the vb2 framework marked as STATE_ERROR. + */ +static void vimc_capture_stop_streaming(struct vb2_queue *vq) +{ + struct vimc_capture_device *vcapture = vb2_get_drv_priv(vq); + + vimc_streamer_s_stream(&vcapture->stream, &vcapture->ved, 0); + + /* Stop the media pipeline */ + video_device_pipeline_stop(&vcapture->vdev); + + /* Release all active buffers */ + vimc_capture_return_all_buffers(vcapture, VB2_BUF_STATE_ERROR); +} + +static void vimc_capture_buf_queue(struct vb2_buffer *vb2_buf) +{ + struct vimc_capture_device *vcapture = vb2_get_drv_priv(vb2_buf->vb2_queue); + struct vimc_capture_buffer *buf = container_of(vb2_buf, + struct vimc_capture_buffer, + vb2.vb2_buf); + + spin_lock(&vcapture->qlock); + list_add_tail(&buf->list, &vcapture->buf_list); + spin_unlock(&vcapture->qlock); +} + +static int vimc_capture_queue_setup(struct vb2_queue *vq, unsigned int *nbuffers, + unsigned int *nplanes, unsigned int sizes[], + struct device *alloc_devs[]) +{ + struct vimc_capture_device *vcapture = vb2_get_drv_priv(vq); + + if (*nplanes) + return sizes[0] < vcapture->format.sizeimage ? -EINVAL : 0; + /* We don't support multiplanes for now */ + *nplanes = 1; + sizes[0] = vcapture->format.sizeimage; + + return 0; +} + +static int vimc_capture_buffer_prepare(struct vb2_buffer *vb) +{ + struct vimc_capture_device *vcapture = vb2_get_drv_priv(vb->vb2_queue); + unsigned long size = vcapture->format.sizeimage; + + if (vb2_plane_size(vb, 0) < size) { + dev_err(vcapture->ved.dev, "%s: buffer too small (%lu < %lu)\n", + vcapture->vdev.name, vb2_plane_size(vb, 0), size); + return -EINVAL; + } + return 0; +} + +static const struct vb2_ops vimc_capture_qops = { + .start_streaming = vimc_capture_start_streaming, + .stop_streaming = vimc_capture_stop_streaming, + .buf_queue = vimc_capture_buf_queue, + .queue_setup = vimc_capture_queue_setup, + .buf_prepare = vimc_capture_buffer_prepare, + /* + * Since q->lock is set we can use the standard + * vb2_ops_wait_prepare/finish helper functions. + */ + .wait_prepare = vb2_ops_wait_prepare, + .wait_finish = vb2_ops_wait_finish, +}; + +static const struct media_entity_operations vimc_capture_mops = { + .link_validate = vimc_vdev_link_validate, +}; + +static void vimc_capture_release(struct vimc_ent_device *ved) +{ + struct vimc_capture_device *vcapture = + container_of(ved, struct vimc_capture_device, ved); + + media_entity_cleanup(vcapture->ved.ent); + kfree(vcapture); +} + +static void vimc_capture_unregister(struct vimc_ent_device *ved) +{ + struct vimc_capture_device *vcapture = + container_of(ved, struct vimc_capture_device, ved); + + vb2_video_unregister_device(&vcapture->vdev); +} + +static void *vimc_capture_process_frame(struct vimc_ent_device *ved, + const void *frame) +{ + struct vimc_capture_device *vcapture = container_of(ved, struct vimc_capture_device, + ved); + struct vimc_capture_buffer *vimc_buf; + void *vbuf; + + spin_lock(&vcapture->qlock); + + /* Get the first entry of the list */ + vimc_buf = list_first_entry_or_null(&vcapture->buf_list, + typeof(*vimc_buf), list); + if (!vimc_buf) { + spin_unlock(&vcapture->qlock); + return ERR_PTR(-EAGAIN); + } + + /* Remove this entry from the list */ + list_del(&vimc_buf->list); + + spin_unlock(&vcapture->qlock); + + /* Fill the buffer */ + vimc_buf->vb2.vb2_buf.timestamp = ktime_get_ns(); + vimc_buf->vb2.sequence = vcapture->sequence++; + vimc_buf->vb2.field = vcapture->format.field; + + vbuf = vb2_plane_vaddr(&vimc_buf->vb2.vb2_buf, 0); + + memcpy(vbuf, frame, vcapture->format.sizeimage); + + /* Set it as ready */ + vb2_set_plane_payload(&vimc_buf->vb2.vb2_buf, 0, + vcapture->format.sizeimage); + vb2_buffer_done(&vimc_buf->vb2.vb2_buf, VB2_BUF_STATE_DONE); + return NULL; +} + +static struct vimc_ent_device *vimc_capture_add(struct vimc_device *vimc, + const char *vcfg_name) +{ + struct v4l2_device *v4l2_dev = &vimc->v4l2_dev; + const struct vimc_pix_map *vpix; + struct vimc_capture_device *vcapture; + struct video_device *vdev; + struct vb2_queue *q; + int ret; + + /* Allocate the vimc_capture_device struct */ + vcapture = kzalloc(sizeof(*vcapture), GFP_KERNEL); + if (!vcapture) + return ERR_PTR(-ENOMEM); + + /* Initialize the media entity */ + vcapture->vdev.entity.name = vcfg_name; + vcapture->vdev.entity.function = MEDIA_ENT_F_IO_V4L; + vcapture->pad.flags = MEDIA_PAD_FL_SINK; + ret = media_entity_pads_init(&vcapture->vdev.entity, + 1, &vcapture->pad); + if (ret) + goto err_free_vcapture; + + /* Initialize the lock */ + mutex_init(&vcapture->lock); + + /* Initialize the vb2 queue */ + q = &vcapture->queue; + q->type = V4L2_BUF_TYPE_VIDEO_CAPTURE; + q->io_modes = VB2_MMAP | VB2_DMABUF; + if (vimc_allocator == VIMC_ALLOCATOR_VMALLOC) + q->io_modes |= VB2_USERPTR; + q->drv_priv = vcapture; + q->buf_struct_size = sizeof(struct vimc_capture_buffer); + q->ops = &vimc_capture_qops; + q->mem_ops = vimc_allocator == VIMC_ALLOCATOR_DMA_CONTIG + ? &vb2_dma_contig_memops : &vb2_vmalloc_memops; + q->timestamp_flags = V4L2_BUF_FLAG_TIMESTAMP_MONOTONIC; + q->min_buffers_needed = 2; + q->lock = &vcapture->lock; + q->dev = v4l2_dev->dev; + + ret = vb2_queue_init(q); + if (ret) { + dev_err(vimc->mdev.dev, "%s: vb2 queue init failed (err=%d)\n", + vcfg_name, ret); + goto err_clean_m_ent; + } + + /* Initialize buffer list and its lock */ + INIT_LIST_HEAD(&vcapture->buf_list); + spin_lock_init(&vcapture->qlock); + + /* Set default frame format */ + vcapture->format = fmt_default; + vpix = vimc_pix_map_by_pixelformat(vcapture->format.pixelformat); + vcapture->format.bytesperline = vcapture->format.width * vpix->bpp; + vcapture->format.sizeimage = vcapture->format.bytesperline * + vcapture->format.height; + + /* Fill the vimc_ent_device struct */ + vcapture->ved.ent = &vcapture->vdev.entity; + vcapture->ved.process_frame = vimc_capture_process_frame; + vcapture->ved.vdev_get_format = vimc_capture_get_format; + vcapture->ved.dev = vimc->mdev.dev; + + /* Initialize the video_device struct */ + vdev = &vcapture->vdev; + vdev->device_caps = V4L2_CAP_VIDEO_CAPTURE | V4L2_CAP_STREAMING + | V4L2_CAP_IO_MC; + vdev->entity.ops = &vimc_capture_mops; + vdev->release = video_device_release_empty; + vdev->fops = &vimc_capture_fops; + vdev->ioctl_ops = &vimc_capture_ioctl_ops; + vdev->lock = &vcapture->lock; + vdev->queue = q; + vdev->v4l2_dev = v4l2_dev; + vdev->vfl_dir = VFL_DIR_RX; + strscpy(vdev->name, vcfg_name, sizeof(vdev->name)); + video_set_drvdata(vdev, &vcapture->ved); + + /* Register the video_device with the v4l2 and the media framework */ + ret = video_register_device(vdev, VFL_TYPE_VIDEO, -1); + if (ret) { + dev_err(vimc->mdev.dev, "%s: video register failed (err=%d)\n", + vcapture->vdev.name, ret); + goto err_clean_m_ent; + } + + return &vcapture->ved; + +err_clean_m_ent: + media_entity_cleanup(&vcapture->vdev.entity); +err_free_vcapture: + kfree(vcapture); + + return ERR_PTR(ret); +} + +struct vimc_ent_type vimc_capture_type = { + .add = vimc_capture_add, + .unregister = vimc_capture_unregister, + .release = vimc_capture_release +}; -- cgit v1.2.3