Author | Tokens | Token Proportion | Commits | Commit Proportion |
---|---|---|---|---|
Laurent Pinchart | 2574 | 98.47% | 9 | 69.23% |
Tomi Valkeinen | 26 | 0.99% | 1 | 7.69% |
Hans Verkuil | 12 | 0.46% | 2 | 15.38% |
Mauro Carvalho Chehab | 2 | 0.08% | 1 | 7.69% |
Total | 2614 | 13 |
// SPDX-License-Identifier: GPL-2.0+ /* * vsp1_histo.c -- R-Car VSP1 Histogram API * * Copyright (C) 2016 Renesas Electronics Corporation * Copyright (C) 2016 Laurent Pinchart * * Contact: Laurent Pinchart (laurent.pinchart@ideasonboard.com) */ #include <linux/device.h> #include <linux/gfp.h> #include <media/v4l2-ioctl.h> #include <media/v4l2-subdev.h> #include <media/videobuf2-vmalloc.h> #include "vsp1.h" #include "vsp1_histo.h" #include "vsp1_pipe.h" #define HISTO_MIN_SIZE 4U #define HISTO_MAX_SIZE 8192U /* ----------------------------------------------------------------------------- * Buffer Operations */ static inline struct vsp1_histogram_buffer * to_vsp1_histogram_buffer(struct vb2_v4l2_buffer *vbuf) { return container_of(vbuf, struct vsp1_histogram_buffer, buf); } struct vsp1_histogram_buffer * vsp1_histogram_buffer_get(struct vsp1_histogram *histo) { struct vsp1_histogram_buffer *buf = NULL; spin_lock(&histo->irqlock); if (list_empty(&histo->irqqueue)) goto done; buf = list_first_entry(&histo->irqqueue, struct vsp1_histogram_buffer, queue); list_del(&buf->queue); histo->readout = true; done: spin_unlock(&histo->irqlock); return buf; } void vsp1_histogram_buffer_complete(struct vsp1_histogram *histo, struct vsp1_histogram_buffer *buf, size_t size) { struct vsp1_pipeline *pipe = histo->entity.pipe; /* * The pipeline pointer is guaranteed to be valid as this function is * called from the frame completion interrupt handler, which can only * occur when video streaming is active. */ buf->buf.sequence = pipe->sequence; buf->buf.vb2_buf.timestamp = ktime_get_ns(); vb2_set_plane_payload(&buf->buf.vb2_buf, 0, size); vb2_buffer_done(&buf->buf.vb2_buf, VB2_BUF_STATE_DONE); spin_lock(&histo->irqlock); histo->readout = false; wake_up(&histo->wait_queue); spin_unlock(&histo->irqlock); } /* ----------------------------------------------------------------------------- * videobuf2 Queue Operations */ static int histo_queue_setup(struct vb2_queue *vq, unsigned int *nbuffers, unsigned int *nplanes, unsigned int sizes[], struct device *alloc_devs[]) { struct vsp1_histogram *histo = vb2_get_drv_priv(vq); if (*nplanes) { if (*nplanes != 1) return -EINVAL; if (sizes[0] < histo->data_size) return -EINVAL; return 0; } *nplanes = 1; sizes[0] = histo->data_size; return 0; } static int histo_buffer_prepare(struct vb2_buffer *vb) { struct vb2_v4l2_buffer *vbuf = to_vb2_v4l2_buffer(vb); struct vsp1_histogram *histo = vb2_get_drv_priv(vb->vb2_queue); struct vsp1_histogram_buffer *buf = to_vsp1_histogram_buffer(vbuf); if (vb->num_planes != 1) return -EINVAL; if (vb2_plane_size(vb, 0) < histo->data_size) return -EINVAL; buf->addr = vb2_plane_vaddr(vb, 0); return 0; } static void histo_buffer_queue(struct vb2_buffer *vb) { struct vb2_v4l2_buffer *vbuf = to_vb2_v4l2_buffer(vb); struct vsp1_histogram *histo = vb2_get_drv_priv(vb->vb2_queue); struct vsp1_histogram_buffer *buf = to_vsp1_histogram_buffer(vbuf); spin_lock_irq(&histo->irqlock); list_add_tail(&buf->queue, &histo->irqqueue); spin_unlock_irq(&histo->irqlock); } static int histo_start_streaming(struct vb2_queue *vq, unsigned int count) { return 0; } static void histo_stop_streaming(struct vb2_queue *vq) { struct vsp1_histogram *histo = vb2_get_drv_priv(vq); struct vsp1_histogram_buffer *buffer; spin_lock_irq(&histo->irqlock); /* Remove all buffers from the IRQ queue. */ list_for_each_entry(buffer, &histo->irqqueue, queue) vb2_buffer_done(&buffer->buf.vb2_buf, VB2_BUF_STATE_ERROR); INIT_LIST_HEAD(&histo->irqqueue); /* Wait for the buffer being read out (if any) to complete. */ wait_event_lock_irq(histo->wait_queue, !histo->readout, histo->irqlock); spin_unlock_irq(&histo->irqlock); } static const struct vb2_ops histo_video_queue_qops = { .queue_setup = histo_queue_setup, .buf_prepare = histo_buffer_prepare, .buf_queue = histo_buffer_queue, .wait_prepare = vb2_ops_wait_prepare, .wait_finish = vb2_ops_wait_finish, .start_streaming = histo_start_streaming, .stop_streaming = histo_stop_streaming, }; /* ----------------------------------------------------------------------------- * V4L2 Subdevice Operations */ static int histo_enum_mbus_code(struct v4l2_subdev *subdev, struct v4l2_subdev_state *sd_state, struct v4l2_subdev_mbus_code_enum *code) { struct vsp1_histogram *histo = subdev_to_histo(subdev); if (code->pad == HISTO_PAD_SOURCE) { code->code = MEDIA_BUS_FMT_FIXED; return 0; } return vsp1_subdev_enum_mbus_code(subdev, sd_state, code, histo->formats, histo->num_formats); } static int histo_enum_frame_size(struct v4l2_subdev *subdev, struct v4l2_subdev_state *sd_state, struct v4l2_subdev_frame_size_enum *fse) { if (fse->pad != HISTO_PAD_SINK) return -EINVAL; return vsp1_subdev_enum_frame_size(subdev, sd_state, fse, HISTO_MIN_SIZE, HISTO_MIN_SIZE, HISTO_MAX_SIZE, HISTO_MAX_SIZE); } static int histo_get_selection(struct v4l2_subdev *subdev, struct v4l2_subdev_state *sd_state, struct v4l2_subdev_selection *sel) { struct vsp1_histogram *histo = subdev_to_histo(subdev); struct v4l2_subdev_state *state; struct v4l2_mbus_framefmt *format; struct v4l2_rect *crop; int ret = 0; if (sel->pad != HISTO_PAD_SINK) return -EINVAL; mutex_lock(&histo->entity.lock); state = vsp1_entity_get_state(&histo->entity, sd_state, sel->which); if (!state) { ret = -EINVAL; goto done; } switch (sel->target) { case V4L2_SEL_TGT_COMPOSE_BOUNDS: case V4L2_SEL_TGT_COMPOSE_DEFAULT: crop = v4l2_subdev_state_get_crop(state, HISTO_PAD_SINK); sel->r.left = 0; sel->r.top = 0; sel->r.width = crop->width; sel->r.height = crop->height; break; case V4L2_SEL_TGT_CROP_BOUNDS: case V4L2_SEL_TGT_CROP_DEFAULT: format = v4l2_subdev_state_get_format(state, HISTO_PAD_SINK); sel->r.left = 0; sel->r.top = 0; sel->r.width = format->width; sel->r.height = format->height; break; case V4L2_SEL_TGT_COMPOSE: sel->r = *v4l2_subdev_state_get_compose(state, sel->pad); break; case V4L2_SEL_TGT_CROP: sel->r = *v4l2_subdev_state_get_crop(state, sel->pad); break; default: ret = -EINVAL; break; } done: mutex_unlock(&histo->entity.lock); return ret; } static int histo_set_crop(struct v4l2_subdev *subdev, struct v4l2_subdev_state *sd_state, struct v4l2_subdev_selection *sel) { struct v4l2_mbus_framefmt *format; /* The crop rectangle must be inside the input frame. */ format = v4l2_subdev_state_get_format(sd_state, HISTO_PAD_SINK); sel->r.left = clamp_t(unsigned int, sel->r.left, 0, format->width - 1); sel->r.top = clamp_t(unsigned int, sel->r.top, 0, format->height - 1); sel->r.width = clamp_t(unsigned int, sel->r.width, HISTO_MIN_SIZE, format->width - sel->r.left); sel->r.height = clamp_t(unsigned int, sel->r.height, HISTO_MIN_SIZE, format->height - sel->r.top); /* Set the crop rectangle and reset the compose rectangle. */ *v4l2_subdev_state_get_crop(sd_state, sel->pad) = sel->r; *v4l2_subdev_state_get_compose(sd_state, sel->pad) = sel->r; return 0; } static int histo_set_compose(struct v4l2_subdev *subdev, struct v4l2_subdev_state *sd_state, struct v4l2_subdev_selection *sel) { struct v4l2_rect *compose; struct v4l2_rect *crop; unsigned int ratio; /* * The compose rectangle is used to configure downscaling, the top left * corner is fixed to (0,0) and the size to 1/2 or 1/4 of the crop * rectangle. */ sel->r.left = 0; sel->r.top = 0; crop = v4l2_subdev_state_get_crop(sd_state, sel->pad); /* * Clamp the width and height to acceptable values first and then * compute the closest rounded dividing ratio. * * Ratio Rounded ratio * -------------------------- * [1.0 1.5[ 1 * [1.5 3.0[ 2 * [3.0 4.0] 4 * * The rounded ratio can be computed using * * 1 << (ceil(ratio * 2) / 3) */ sel->r.width = clamp(sel->r.width, crop->width / 4, crop->width); ratio = 1 << (crop->width * 2 / sel->r.width / 3); sel->r.width = crop->width / ratio; sel->r.height = clamp(sel->r.height, crop->height / 4, crop->height); ratio = 1 << (crop->height * 2 / sel->r.height / 3); sel->r.height = crop->height / ratio; compose = v4l2_subdev_state_get_compose(sd_state, sel->pad); *compose = sel->r; return 0; } static int histo_set_selection(struct v4l2_subdev *subdev, struct v4l2_subdev_state *sd_state, struct v4l2_subdev_selection *sel) { struct vsp1_histogram *histo = subdev_to_histo(subdev); struct v4l2_subdev_state *state; int ret; if (sel->pad != HISTO_PAD_SINK) return -EINVAL; mutex_lock(&histo->entity.lock); state = vsp1_entity_get_state(&histo->entity, sd_state, sel->which); if (!state) { ret = -EINVAL; goto done; } if (sel->target == V4L2_SEL_TGT_CROP) ret = histo_set_crop(subdev, state, sel); else if (sel->target == V4L2_SEL_TGT_COMPOSE) ret = histo_set_compose(subdev, state, sel); else ret = -EINVAL; done: mutex_unlock(&histo->entity.lock); return ret; } static int histo_set_format(struct v4l2_subdev *subdev, struct v4l2_subdev_state *sd_state, struct v4l2_subdev_format *fmt) { struct vsp1_histogram *histo = subdev_to_histo(subdev); if (fmt->pad == HISTO_PAD_SOURCE) { fmt->format.code = MEDIA_BUS_FMT_FIXED; fmt->format.width = 0; fmt->format.height = 0; fmt->format.field = V4L2_FIELD_NONE; fmt->format.colorspace = V4L2_COLORSPACE_RAW; return 0; } return vsp1_subdev_set_pad_format(subdev, sd_state, fmt, histo->formats, histo->num_formats, HISTO_MIN_SIZE, HISTO_MIN_SIZE, HISTO_MAX_SIZE, HISTO_MAX_SIZE); } static const struct v4l2_subdev_pad_ops histo_pad_ops = { .enum_mbus_code = histo_enum_mbus_code, .enum_frame_size = histo_enum_frame_size, .get_fmt = vsp1_subdev_get_pad_format, .set_fmt = histo_set_format, .get_selection = histo_get_selection, .set_selection = histo_set_selection, }; static const struct v4l2_subdev_ops histo_ops = { .pad = &histo_pad_ops, }; /* ----------------------------------------------------------------------------- * V4L2 ioctls */ static int histo_v4l2_querycap(struct file *file, void *fh, struct v4l2_capability *cap) { struct v4l2_fh *vfh = file->private_data; struct vsp1_histogram *histo = vdev_to_histo(vfh->vdev); cap->capabilities = V4L2_CAP_DEVICE_CAPS | V4L2_CAP_STREAMING | V4L2_CAP_VIDEO_CAPTURE_MPLANE | V4L2_CAP_VIDEO_OUTPUT_MPLANE | V4L2_CAP_META_CAPTURE; strscpy(cap->driver, "vsp1", sizeof(cap->driver)); strscpy(cap->card, histo->video.name, sizeof(cap->card)); return 0; } static int histo_v4l2_enum_format(struct file *file, void *fh, struct v4l2_fmtdesc *f) { struct v4l2_fh *vfh = file->private_data; struct vsp1_histogram *histo = vdev_to_histo(vfh->vdev); if (f->index > 0 || f->type != histo->queue.type) return -EINVAL; f->pixelformat = histo->meta_format; return 0; } static int histo_v4l2_get_format(struct file *file, void *fh, struct v4l2_format *format) { struct v4l2_fh *vfh = file->private_data; struct vsp1_histogram *histo = vdev_to_histo(vfh->vdev); struct v4l2_meta_format *meta = &format->fmt.meta; if (format->type != histo->queue.type) return -EINVAL; memset(meta, 0, sizeof(*meta)); meta->dataformat = histo->meta_format; meta->buffersize = histo->data_size; return 0; } static const struct v4l2_ioctl_ops histo_v4l2_ioctl_ops = { .vidioc_querycap = histo_v4l2_querycap, .vidioc_enum_fmt_meta_cap = histo_v4l2_enum_format, .vidioc_g_fmt_meta_cap = histo_v4l2_get_format, .vidioc_s_fmt_meta_cap = histo_v4l2_get_format, .vidioc_try_fmt_meta_cap = histo_v4l2_get_format, .vidioc_reqbufs = vb2_ioctl_reqbufs, .vidioc_querybuf = vb2_ioctl_querybuf, .vidioc_qbuf = vb2_ioctl_qbuf, .vidioc_dqbuf = vb2_ioctl_dqbuf, .vidioc_create_bufs = vb2_ioctl_create_bufs, .vidioc_prepare_buf = vb2_ioctl_prepare_buf, .vidioc_streamon = vb2_ioctl_streamon, .vidioc_streamoff = vb2_ioctl_streamoff, }; /* ----------------------------------------------------------------------------- * V4L2 File Operations */ static const struct v4l2_file_operations histo_v4l2_fops = { .owner = THIS_MODULE, .unlocked_ioctl = video_ioctl2, .open = v4l2_fh_open, .release = vb2_fop_release, .poll = vb2_fop_poll, .mmap = vb2_fop_mmap, }; static void vsp1_histogram_cleanup(struct vsp1_histogram *histo) { if (video_is_registered(&histo->video)) video_unregister_device(&histo->video); media_entity_cleanup(&histo->video.entity); } void vsp1_histogram_destroy(struct vsp1_entity *entity) { struct vsp1_histogram *histo = subdev_to_histo(&entity->subdev); vsp1_histogram_cleanup(histo); } int vsp1_histogram_init(struct vsp1_device *vsp1, struct vsp1_histogram *histo, enum vsp1_entity_type type, const char *name, const struct vsp1_entity_operations *ops, const unsigned int *formats, unsigned int num_formats, size_t data_size, u32 meta_format) { int ret; histo->formats = formats; histo->num_formats = num_formats; histo->data_size = data_size; histo->meta_format = meta_format; histo->pad.flags = MEDIA_PAD_FL_SINK; histo->video.vfl_dir = VFL_DIR_RX; mutex_init(&histo->lock); spin_lock_init(&histo->irqlock); INIT_LIST_HEAD(&histo->irqqueue); init_waitqueue_head(&histo->wait_queue); /* Initialize the VSP entity... */ histo->entity.ops = ops; histo->entity.type = type; ret = vsp1_entity_init(vsp1, &histo->entity, name, 2, &histo_ops, MEDIA_ENT_F_PROC_VIDEO_STATISTICS); if (ret < 0) return ret; /* ... and the media entity... */ ret = media_entity_pads_init(&histo->video.entity, 1, &histo->pad); if (ret < 0) return ret; /* ... and the video node... */ histo->video.v4l2_dev = &vsp1->v4l2_dev; histo->video.fops = &histo_v4l2_fops; snprintf(histo->video.name, sizeof(histo->video.name), "%s histo", histo->entity.subdev.name); histo->video.vfl_type = VFL_TYPE_VIDEO; histo->video.release = video_device_release_empty; histo->video.ioctl_ops = &histo_v4l2_ioctl_ops; histo->video.device_caps = V4L2_CAP_META_CAPTURE | V4L2_CAP_STREAMING; video_set_drvdata(&histo->video, histo); /* ... and the buffers queue... */ histo->queue.type = V4L2_BUF_TYPE_META_CAPTURE; histo->queue.io_modes = VB2_MMAP | VB2_USERPTR | VB2_DMABUF; histo->queue.lock = &histo->lock; histo->queue.drv_priv = histo; histo->queue.buf_struct_size = sizeof(struct vsp1_histogram_buffer); histo->queue.ops = &histo_video_queue_qops; histo->queue.mem_ops = &vb2_vmalloc_memops; histo->queue.timestamp_flags = V4L2_BUF_FLAG_TIMESTAMP_COPY; histo->queue.dev = vsp1->dev; ret = vb2_queue_init(&histo->queue); if (ret < 0) { dev_err(vsp1->dev, "failed to initialize vb2 queue\n"); goto error; } /* ... and register the video device. */ histo->video.queue = &histo->queue; ret = video_register_device(&histo->video, VFL_TYPE_VIDEO, -1); if (ret < 0) { dev_err(vsp1->dev, "failed to register video device\n"); goto error; } return 0; error: vsp1_histogram_cleanup(histo); return ret; }
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