diff options
Diffstat (limited to 'drivers/media/platform/vsp1/vsp1_histo.c')
| -rw-r--r-- | drivers/media/platform/vsp1/vsp1_histo.c | 646 |
1 files changed, 0 insertions, 646 deletions
diff --git a/drivers/media/platform/vsp1/vsp1_histo.c b/drivers/media/platform/vsp1/vsp1_histo.c deleted file mode 100644 index afab77cf4fa5..000000000000 --- a/drivers/media/platform/vsp1/vsp1_histo.c +++ /dev/null @@ -1,646 +0,0 @@ -/* - * 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) - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License as published by - * the Free Software Foundation; either version 2 of the License, or - * (at your option) any later version. - */ - -#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; - unsigned long flags; - - spin_lock_irqsave(&histo->irqlock, flags); - - 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_irqrestore(&histo->irqlock, flags); - return buf; -} - -void vsp1_histogram_buffer_complete(struct vsp1_histogram *histo, - struct vsp1_histogram_buffer *buf, - size_t size) -{ - struct vsp1_pipeline *pipe = histo->pipe; - unsigned long flags; - - /* - * 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_irqsave(&histo->irqlock, flags); - histo->readout = false; - wake_up(&histo->wait_queue); - spin_unlock_irqrestore(&histo->irqlock, flags); -} - -/* ----------------------------------------------------------------------------- - * 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); - unsigned long flags; - - spin_lock_irqsave(&histo->irqlock, flags); - list_add_tail(&buf->queue, &histo->irqqueue); - spin_unlock_irqrestore(&histo->irqlock, flags); -} - -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; - unsigned long flags; - - spin_lock_irqsave(&histo->irqlock, flags); - - /* 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_irqrestore(&histo->irqlock, flags); -} - -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_pad_config *cfg, - 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, cfg, code, histo->formats, - histo->num_formats); -} - -static int histo_enum_frame_size(struct v4l2_subdev *subdev, - struct v4l2_subdev_pad_config *cfg, - struct v4l2_subdev_frame_size_enum *fse) -{ - if (fse->pad != HISTO_PAD_SINK) - return -EINVAL; - - return vsp1_subdev_enum_frame_size(subdev, cfg, 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_pad_config *cfg, - struct v4l2_subdev_selection *sel) -{ - struct vsp1_histogram *histo = subdev_to_histo(subdev); - struct v4l2_subdev_pad_config *config; - 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); - - config = vsp1_entity_get_pad_config(&histo->entity, cfg, sel->which); - if (!config) { - ret = -EINVAL; - goto done; - } - - switch (sel->target) { - case V4L2_SEL_TGT_COMPOSE_BOUNDS: - case V4L2_SEL_TGT_COMPOSE_DEFAULT: - crop = vsp1_entity_get_pad_selection(&histo->entity, config, - HISTO_PAD_SINK, - V4L2_SEL_TGT_CROP); - 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 = vsp1_entity_get_pad_format(&histo->entity, config, - 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: - case V4L2_SEL_TGT_CROP: - sel->r = *vsp1_entity_get_pad_selection(&histo->entity, config, - sel->pad, sel->target); - 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_pad_config *config, - struct v4l2_subdev_selection *sel) -{ - struct vsp1_histogram *histo = subdev_to_histo(subdev); - struct v4l2_mbus_framefmt *format; - struct v4l2_rect *selection; - - /* The crop rectangle must be inside the input frame. */ - format = vsp1_entity_get_pad_format(&histo->entity, config, - 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. */ - selection = vsp1_entity_get_pad_selection(&histo->entity, config, - sel->pad, V4L2_SEL_TGT_CROP); - *selection = sel->r; - - selection = vsp1_entity_get_pad_selection(&histo->entity, config, - sel->pad, - V4L2_SEL_TGT_COMPOSE); - *selection = sel->r; - - return 0; -} - -static int histo_set_compose(struct v4l2_subdev *subdev, - struct v4l2_subdev_pad_config *config, - struct v4l2_subdev_selection *sel) -{ - struct vsp1_histogram *histo = subdev_to_histo(subdev); - 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 = vsp1_entity_get_pad_selection(&histo->entity, config, sel->pad, - V4L2_SEL_TGT_CROP); - - /* - * 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 = vsp1_entity_get_pad_selection(&histo->entity, config, - sel->pad, - V4L2_SEL_TGT_COMPOSE); - *compose = sel->r; - - return 0; -} - -static int histo_set_selection(struct v4l2_subdev *subdev, - struct v4l2_subdev_pad_config *cfg, - struct v4l2_subdev_selection *sel) -{ - struct vsp1_histogram *histo = subdev_to_histo(subdev); - struct v4l2_subdev_pad_config *config; - int ret; - - if (sel->pad != HISTO_PAD_SINK) - return -EINVAL; - - mutex_lock(&histo->entity.lock); - - config = vsp1_entity_get_pad_config(&histo->entity, cfg, sel->which); - if (!config) { - ret = -EINVAL; - goto done; - } - - if (sel->target == V4L2_SEL_TGT_CROP) - ret = histo_set_crop(subdev, config, sel); - else if (sel->target == V4L2_SEL_TGT_COMPOSE) - ret = histo_set_compose(subdev, config, sel); - else - ret = -EINVAL; - -done: - mutex_unlock(&histo->entity.lock); - return ret; -} - -static int histo_get_format(struct v4l2_subdev *subdev, - struct v4l2_subdev_pad_config *cfg, - struct v4l2_subdev_format *fmt) -{ - 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_get_pad_format(subdev, cfg, fmt); -} - -static int histo_set_format(struct v4l2_subdev *subdev, - struct v4l2_subdev_pad_config *cfg, - struct v4l2_subdev_format *fmt) -{ - struct vsp1_histogram *histo = subdev_to_histo(subdev); - struct v4l2_subdev_pad_config *config; - struct v4l2_mbus_framefmt *format; - struct v4l2_rect *selection; - unsigned int i; - int ret = 0; - - if (fmt->pad != HISTO_PAD_SINK) - return histo_get_format(subdev, cfg, fmt); - - mutex_lock(&histo->entity.lock); - - config = vsp1_entity_get_pad_config(&histo->entity, cfg, fmt->which); - if (!config) { - ret = -EINVAL; - goto done; - } - - /* - * Default to the first format if the requested format is not - * supported. - */ - for (i = 0; i < histo->num_formats; ++i) { - if (fmt->format.code == histo->formats[i]) - break; - } - if (i == histo->num_formats) - fmt->format.code = histo->formats[0]; - - format = vsp1_entity_get_pad_format(&histo->entity, config, fmt->pad); - - format->code = fmt->format.code; - format->width = clamp_t(unsigned int, fmt->format.width, - HISTO_MIN_SIZE, HISTO_MAX_SIZE); - format->height = clamp_t(unsigned int, fmt->format.height, - HISTO_MIN_SIZE, HISTO_MAX_SIZE); - format->field = V4L2_FIELD_NONE; - format->colorspace = V4L2_COLORSPACE_SRGB; - - fmt->format = *format; - - /* Reset the crop and compose rectangles */ - selection = vsp1_entity_get_pad_selection(&histo->entity, config, - fmt->pad, V4L2_SEL_TGT_CROP); - selection->left = 0; - selection->top = 0; - selection->width = format->width; - selection->height = format->height; - - selection = vsp1_entity_get_pad_selection(&histo->entity, config, - fmt->pad, - V4L2_SEL_TGT_COMPOSE); - selection->left = 0; - selection->top = 0; - selection->width = format->width; - selection->height = format->height; - -done: - mutex_unlock(&histo->entity.lock); - return ret; -} - -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 = histo_get_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; - cap->device_caps = V4L2_CAP_META_CAPTURE - | V4L2_CAP_STREAMING; - - strlcpy(cap->driver, "vsp1", sizeof(cap->driver)); - strlcpy(cap->card, histo->video.name, sizeof(cap->card)); - snprintf(cap->bus_info, sizeof(cap->bus_info), "platform:%s", - dev_name(histo->entity.vsp1->dev)); - - 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_GRABBER; - histo->video.release = video_device_release_empty; - histo->video.ioctl_ops = &histo_v4l2_ioctl_ops; - - 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_GRABBER, -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; -} |