| // SPDX-License-Identifier: GPL-2.0-only |
| /* |
| * Samsung EXYNOS4x12 FIMC-IS (Imaging Subsystem) driver |
| * |
| * FIMC-IS ISP video input and video output DMA interface driver |
| * |
| * Copyright (C) 2013 Samsung Electronics Co., Ltd. |
| * Author: Sylwester Nawrocki <s.nawrocki@samsung.com> |
| * |
| * The hardware handling code derived from a driver written by |
| * Younghwan Joo <yhwan.joo@samsung.com>. |
| */ |
| |
| #include <linux/bitops.h> |
| #include <linux/device.h> |
| #include <linux/delay.h> |
| #include <linux/errno.h> |
| #include <linux/kernel.h> |
| #include <linux/module.h> |
| #include <linux/types.h> |
| #include <linux/printk.h> |
| #include <linux/pm_runtime.h> |
| #include <linux/slab.h> |
| #include <linux/videodev2.h> |
| |
| #include <media/v4l2-device.h> |
| #include <media/v4l2-ioctl.h> |
| #include <media/videobuf2-v4l2.h> |
| #include <media/videobuf2-dma-contig.h> |
| #include <media/drv-intf/exynos-fimc.h> |
| |
| #include "common.h" |
| #include "media-dev.h" |
| #include "fimc-is.h" |
| #include "fimc-isp-video.h" |
| #include "fimc-is-param.h" |
| |
| static int isp_video_capture_queue_setup(struct vb2_queue *vq, |
| unsigned int *num_buffers, unsigned int *num_planes, |
| unsigned int sizes[], struct device *alloc_devs[]) |
| { |
| struct fimc_isp *isp = vb2_get_drv_priv(vq); |
| struct v4l2_pix_format_mplane *vid_fmt = &isp->video_capture.pixfmt; |
| const struct fimc_fmt *fmt = isp->video_capture.format; |
| unsigned int wh, i; |
| |
| wh = vid_fmt->width * vid_fmt->height; |
| |
| if (fmt == NULL) |
| return -EINVAL; |
| |
| *num_buffers = clamp_t(u32, *num_buffers, FIMC_ISP_REQ_BUFS_MIN, |
| FIMC_ISP_REQ_BUFS_MAX); |
| if (*num_planes) { |
| if (*num_planes != fmt->memplanes) |
| return -EINVAL; |
| for (i = 0; i < *num_planes; i++) |
| if (sizes[i] < (wh * fmt->depth[i]) / 8) |
| return -EINVAL; |
| return 0; |
| } |
| |
| *num_planes = fmt->memplanes; |
| |
| for (i = 0; i < fmt->memplanes; i++) |
| sizes[i] = (wh * fmt->depth[i]) / 8; |
| |
| return 0; |
| } |
| |
| static inline struct param_dma_output *__get_isp_dma2(struct fimc_is *is) |
| { |
| return &__get_curr_is_config(is)->isp.dma2_output; |
| } |
| |
| static int isp_video_capture_start_streaming(struct vb2_queue *q, |
| unsigned int count) |
| { |
| struct fimc_isp *isp = vb2_get_drv_priv(q); |
| struct fimc_is *is = fimc_isp_to_is(isp); |
| struct param_dma_output *dma = __get_isp_dma2(is); |
| struct fimc_is_video *video = &isp->video_capture; |
| int ret; |
| |
| if (!test_bit(ST_ISP_VID_CAP_BUF_PREP, &isp->state) || |
| test_bit(ST_ISP_VID_CAP_STREAMING, &isp->state)) |
| return 0; |
| |
| |
| dma->cmd = DMA_OUTPUT_COMMAND_ENABLE; |
| dma->notify_dma_done = DMA_OUTPUT_NOTIFY_DMA_DONE_ENABLE; |
| dma->buffer_address = is->is_dma_p_region + |
| DMA2_OUTPUT_ADDR_ARRAY_OFFS; |
| dma->buffer_number = video->reqbufs_count; |
| dma->dma_out_mask = video->buf_mask; |
| |
| isp_dbg(2, &video->ve.vdev, |
| "buf_count: %d, planes: %d, dma addr table: %#x\n", |
| video->buf_count, video->format->memplanes, |
| dma->buffer_address); |
| |
| fimc_is_mem_barrier(); |
| |
| fimc_is_set_param_bit(is, PARAM_ISP_DMA2_OUTPUT); |
| __fimc_is_hw_update_param(is, PARAM_ISP_DMA2_OUTPUT); |
| |
| ret = fimc_is_itf_s_param(is, false); |
| if (ret < 0) |
| return ret; |
| |
| ret = fimc_pipeline_call(&video->ve, set_stream, 1); |
| if (ret < 0) |
| return ret; |
| |
| set_bit(ST_ISP_VID_CAP_STREAMING, &isp->state); |
| return ret; |
| } |
| |
| static void isp_video_capture_stop_streaming(struct vb2_queue *q) |
| { |
| struct fimc_isp *isp = vb2_get_drv_priv(q); |
| struct fimc_is *is = fimc_isp_to_is(isp); |
| struct param_dma_output *dma = __get_isp_dma2(is); |
| int ret; |
| |
| ret = fimc_pipeline_call(&isp->video_capture.ve, set_stream, 0); |
| if (ret < 0) |
| return; |
| |
| dma->cmd = DMA_OUTPUT_COMMAND_DISABLE; |
| dma->notify_dma_done = DMA_OUTPUT_NOTIFY_DMA_DONE_DISABLE; |
| dma->buffer_number = 0; |
| dma->buffer_address = 0; |
| dma->dma_out_mask = 0; |
| |
| fimc_is_set_param_bit(is, PARAM_ISP_DMA2_OUTPUT); |
| __fimc_is_hw_update_param(is, PARAM_ISP_DMA2_OUTPUT); |
| |
| ret = fimc_is_itf_s_param(is, false); |
| if (ret < 0) |
| dev_warn(&is->pdev->dev, "%s: DMA stop failed\n", __func__); |
| |
| fimc_is_hw_set_isp_buf_mask(is, 0); |
| |
| clear_bit(ST_ISP_VID_CAP_BUF_PREP, &isp->state); |
| clear_bit(ST_ISP_VID_CAP_STREAMING, &isp->state); |
| |
| isp->video_capture.buf_count = 0; |
| } |
| |
| static int isp_video_capture_buffer_prepare(struct vb2_buffer *vb) |
| { |
| struct fimc_isp *isp = vb2_get_drv_priv(vb->vb2_queue); |
| struct fimc_is_video *video = &isp->video_capture; |
| int i; |
| |
| if (video->format == NULL) |
| return -EINVAL; |
| |
| for (i = 0; i < video->format->memplanes; i++) { |
| unsigned long size = video->pixfmt.plane_fmt[i].sizeimage; |
| |
| if (vb2_plane_size(vb, i) < size) { |
| v4l2_err(&video->ve.vdev, |
| "User buffer too small (%ld < %ld)\n", |
| vb2_plane_size(vb, i), size); |
| return -EINVAL; |
| } |
| vb2_set_plane_payload(vb, i, size); |
| } |
| |
| /* Check if we get one of the already known buffers. */ |
| if (test_bit(ST_ISP_VID_CAP_BUF_PREP, &isp->state)) { |
| dma_addr_t dma_addr = vb2_dma_contig_plane_dma_addr(vb, 0); |
| int i; |
| |
| for (i = 0; i < video->buf_count; i++) |
| if (video->buffers[i]->dma_addr[0] == dma_addr) |
| return 0; |
| return -ENXIO; |
| } |
| |
| return 0; |
| } |
| |
| static void isp_video_capture_buffer_queue(struct vb2_buffer *vb) |
| { |
| struct vb2_v4l2_buffer *vbuf = to_vb2_v4l2_buffer(vb); |
| struct fimc_isp *isp = vb2_get_drv_priv(vb->vb2_queue); |
| struct fimc_is_video *video = &isp->video_capture; |
| struct fimc_is *is = fimc_isp_to_is(isp); |
| struct isp_video_buf *ivb = to_isp_video_buf(vbuf); |
| unsigned long flags; |
| unsigned int i; |
| |
| if (test_bit(ST_ISP_VID_CAP_BUF_PREP, &isp->state)) { |
| spin_lock_irqsave(&is->slock, flags); |
| video->buf_mask |= BIT(ivb->index); |
| spin_unlock_irqrestore(&is->slock, flags); |
| } else { |
| unsigned int num_planes = video->format->memplanes; |
| |
| ivb->index = video->buf_count; |
| video->buffers[ivb->index] = ivb; |
| |
| for (i = 0; i < num_planes; i++) { |
| int buf_index = ivb->index * num_planes + i; |
| |
| ivb->dma_addr[i] = vb2_dma_contig_plane_dma_addr(vb, i); |
| is->is_p_region->shared[32 + buf_index] = |
| ivb->dma_addr[i]; |
| |
| isp_dbg(2, &video->ve.vdev, |
| "dma_buf %d (%d/%d/%d) addr: %pad\n", |
| buf_index, ivb->index, i, vb->index, |
| &ivb->dma_addr[i]); |
| } |
| |
| if (++video->buf_count < video->reqbufs_count) |
| return; |
| |
| video->buf_mask = (1UL << video->buf_count) - 1; |
| set_bit(ST_ISP_VID_CAP_BUF_PREP, &isp->state); |
| } |
| |
| if (!test_bit(ST_ISP_VID_CAP_STREAMING, &isp->state)) |
| isp_video_capture_start_streaming(vb->vb2_queue, 0); |
| } |
| |
| /* |
| * FIMC-IS ISP input and output DMA interface interrupt handler. |
| * Locking: called with is->slock spinlock held. |
| */ |
| void fimc_isp_video_irq_handler(struct fimc_is *is) |
| { |
| struct fimc_is_video *video = &is->isp.video_capture; |
| struct vb2_v4l2_buffer *vbuf; |
| int buf_index; |
| |
| /* TODO: Ensure the DMA is really stopped in stop_streaming callback */ |
| if (!test_bit(ST_ISP_VID_CAP_STREAMING, &is->isp.state)) |
| return; |
| |
| buf_index = (is->i2h_cmd.args[1] - 1) % video->buf_count; |
| vbuf = &video->buffers[buf_index]->vb; |
| |
| vbuf->vb2_buf.timestamp = ktime_get_ns(); |
| vb2_buffer_done(&vbuf->vb2_buf, VB2_BUF_STATE_DONE); |
| |
| video->buf_mask &= ~BIT(buf_index); |
| fimc_is_hw_set_isp_buf_mask(is, video->buf_mask); |
| } |
| |
| static const struct vb2_ops isp_video_capture_qops = { |
| .queue_setup = isp_video_capture_queue_setup, |
| .buf_prepare = isp_video_capture_buffer_prepare, |
| .buf_queue = isp_video_capture_buffer_queue, |
| .wait_prepare = vb2_ops_wait_prepare, |
| .wait_finish = vb2_ops_wait_finish, |
| .start_streaming = isp_video_capture_start_streaming, |
| .stop_streaming = isp_video_capture_stop_streaming, |
| }; |
| |
| static int isp_video_open(struct file *file) |
| { |
| struct fimc_isp *isp = video_drvdata(file); |
| struct exynos_video_entity *ve = &isp->video_capture.ve; |
| struct media_entity *me = &ve->vdev.entity; |
| int ret; |
| |
| if (mutex_lock_interruptible(&isp->video_lock)) |
| return -ERESTARTSYS; |
| |
| ret = v4l2_fh_open(file); |
| if (ret < 0) |
| goto unlock; |
| |
| ret = pm_runtime_get_sync(&isp->pdev->dev); |
| if (ret < 0) |
| goto rel_fh; |
| |
| if (v4l2_fh_is_singular_file(file)) { |
| mutex_lock(&me->graph_obj.mdev->graph_mutex); |
| |
| ret = fimc_pipeline_call(ve, open, me, true); |
| |
| /* Mark the video pipeline as in use. */ |
| if (ret == 0) |
| me->use_count++; |
| |
| mutex_unlock(&me->graph_obj.mdev->graph_mutex); |
| } |
| if (!ret) |
| goto unlock; |
| rel_fh: |
| pm_runtime_put_noidle(&isp->pdev->dev); |
| v4l2_fh_release(file); |
| unlock: |
| mutex_unlock(&isp->video_lock); |
| return ret; |
| } |
| |
| static int isp_video_release(struct file *file) |
| { |
| struct fimc_isp *isp = video_drvdata(file); |
| struct fimc_is_video *ivc = &isp->video_capture; |
| struct media_entity *entity = &ivc->ve.vdev.entity; |
| struct media_device *mdev = entity->graph_obj.mdev; |
| |
| mutex_lock(&isp->video_lock); |
| |
| if (v4l2_fh_is_singular_file(file) && ivc->streaming) { |
| media_pipeline_stop(entity); |
| ivc->streaming = 0; |
| } |
| |
| _vb2_fop_release(file, NULL); |
| |
| if (v4l2_fh_is_singular_file(file)) { |
| fimc_pipeline_call(&ivc->ve, close); |
| |
| mutex_lock(&mdev->graph_mutex); |
| entity->use_count--; |
| mutex_unlock(&mdev->graph_mutex); |
| } |
| |
| pm_runtime_put(&isp->pdev->dev); |
| mutex_unlock(&isp->video_lock); |
| |
| return 0; |
| } |
| |
| static const struct v4l2_file_operations isp_video_fops = { |
| .owner = THIS_MODULE, |
| .open = isp_video_open, |
| .release = isp_video_release, |
| .poll = vb2_fop_poll, |
| .unlocked_ioctl = video_ioctl2, |
| .mmap = vb2_fop_mmap, |
| }; |
| |
| /* |
| * Video node ioctl operations |
| */ |
| static int isp_video_querycap(struct file *file, void *priv, |
| struct v4l2_capability *cap) |
| { |
| struct fimc_isp *isp = video_drvdata(file); |
| |
| __fimc_vidioc_querycap(&isp->pdev->dev, cap); |
| return 0; |
| } |
| |
| static int isp_video_enum_fmt(struct file *file, void *priv, |
| struct v4l2_fmtdesc *f) |
| { |
| const struct fimc_fmt *fmt; |
| |
| if (f->index >= FIMC_ISP_NUM_FORMATS) |
| return -EINVAL; |
| |
| fmt = fimc_isp_find_format(NULL, NULL, f->index); |
| if (WARN_ON(fmt == NULL)) |
| return -EINVAL; |
| |
| f->pixelformat = fmt->fourcc; |
| |
| return 0; |
| } |
| |
| static int isp_video_g_fmt_mplane(struct file *file, void *fh, |
| struct v4l2_format *f) |
| { |
| struct fimc_isp *isp = video_drvdata(file); |
| |
| f->fmt.pix_mp = isp->video_capture.pixfmt; |
| return 0; |
| } |
| |
| static void __isp_video_try_fmt(struct fimc_isp *isp, |
| struct v4l2_pix_format_mplane *pixm, |
| const struct fimc_fmt **fmt) |
| { |
| const struct fimc_fmt *__fmt; |
| |
| __fmt = fimc_isp_find_format(&pixm->pixelformat, NULL, 2); |
| |
| if (fmt) |
| *fmt = __fmt; |
| |
| pixm->colorspace = V4L2_COLORSPACE_SRGB; |
| pixm->field = V4L2_FIELD_NONE; |
| pixm->num_planes = __fmt->memplanes; |
| pixm->pixelformat = __fmt->fourcc; |
| /* |
| * TODO: double check with the docmentation these width/height |
| * constraints are correct. |
| */ |
| v4l_bound_align_image(&pixm->width, FIMC_ISP_SOURCE_WIDTH_MIN, |
| FIMC_ISP_SOURCE_WIDTH_MAX, 3, |
| &pixm->height, FIMC_ISP_SOURCE_HEIGHT_MIN, |
| FIMC_ISP_SOURCE_HEIGHT_MAX, 0, 0); |
| } |
| |
| static int isp_video_try_fmt_mplane(struct file *file, void *fh, |
| struct v4l2_format *f) |
| { |
| struct fimc_isp *isp = video_drvdata(file); |
| |
| __isp_video_try_fmt(isp, &f->fmt.pix_mp, NULL); |
| return 0; |
| } |
| |
| static int isp_video_s_fmt_mplane(struct file *file, void *priv, |
| struct v4l2_format *f) |
| { |
| struct fimc_isp *isp = video_drvdata(file); |
| struct fimc_is *is = fimc_isp_to_is(isp); |
| struct v4l2_pix_format_mplane *pixm = &f->fmt.pix_mp; |
| const struct fimc_fmt *ifmt = NULL; |
| struct param_dma_output *dma = __get_isp_dma2(is); |
| |
| __isp_video_try_fmt(isp, pixm, &ifmt); |
| |
| if (WARN_ON(ifmt == NULL)) |
| return -EINVAL; |
| |
| dma->format = DMA_OUTPUT_FORMAT_BAYER; |
| dma->order = DMA_OUTPUT_ORDER_GB_BG; |
| dma->plane = ifmt->memplanes; |
| dma->bitwidth = ifmt->depth[0]; |
| dma->width = pixm->width; |
| dma->height = pixm->height; |
| |
| fimc_is_mem_barrier(); |
| |
| isp->video_capture.format = ifmt; |
| isp->video_capture.pixfmt = *pixm; |
| |
| return 0; |
| } |
| |
| /* |
| * Check for source/sink format differences at each link. |
| * Return 0 if the formats match or -EPIPE otherwise. |
| */ |
| static int isp_video_pipeline_validate(struct fimc_isp *isp) |
| { |
| struct v4l2_subdev *sd = &isp->subdev; |
| struct v4l2_subdev_format sink_fmt, src_fmt; |
| struct media_pad *pad; |
| int ret; |
| |
| while (1) { |
| /* Retrieve format at the sink pad */ |
| pad = &sd->entity.pads[0]; |
| if (!(pad->flags & MEDIA_PAD_FL_SINK)) |
| break; |
| sink_fmt.pad = pad->index; |
| sink_fmt.which = V4L2_SUBDEV_FORMAT_ACTIVE; |
| ret = v4l2_subdev_call(sd, pad, get_fmt, NULL, &sink_fmt); |
| if (ret < 0 && ret != -ENOIOCTLCMD) |
| return -EPIPE; |
| |
| /* Retrieve format at the source pad */ |
| pad = media_entity_remote_pad(pad); |
| if (!pad || !is_media_entity_v4l2_subdev(pad->entity)) |
| break; |
| |
| sd = media_entity_to_v4l2_subdev(pad->entity); |
| src_fmt.pad = pad->index; |
| src_fmt.which = V4L2_SUBDEV_FORMAT_ACTIVE; |
| ret = v4l2_subdev_call(sd, pad, get_fmt, NULL, &src_fmt); |
| if (ret < 0 && ret != -ENOIOCTLCMD) |
| return -EPIPE; |
| |
| if (src_fmt.format.width != sink_fmt.format.width || |
| src_fmt.format.height != sink_fmt.format.height || |
| src_fmt.format.code != sink_fmt.format.code) |
| return -EPIPE; |
| } |
| |
| return 0; |
| } |
| |
| static int isp_video_streamon(struct file *file, void *priv, |
| enum v4l2_buf_type type) |
| { |
| struct fimc_isp *isp = video_drvdata(file); |
| struct exynos_video_entity *ve = &isp->video_capture.ve; |
| struct media_entity *me = &ve->vdev.entity; |
| int ret; |
| |
| ret = media_pipeline_start(me, &ve->pipe->mp); |
| if (ret < 0) |
| return ret; |
| |
| ret = isp_video_pipeline_validate(isp); |
| if (ret < 0) |
| goto p_stop; |
| |
| ret = vb2_ioctl_streamon(file, priv, type); |
| if (ret < 0) |
| goto p_stop; |
| |
| isp->video_capture.streaming = 1; |
| return 0; |
| p_stop: |
| media_pipeline_stop(me); |
| return ret; |
| } |
| |
| static int isp_video_streamoff(struct file *file, void *priv, |
| enum v4l2_buf_type type) |
| { |
| struct fimc_isp *isp = video_drvdata(file); |
| struct fimc_is_video *video = &isp->video_capture; |
| int ret; |
| |
| ret = vb2_ioctl_streamoff(file, priv, type); |
| if (ret < 0) |
| return ret; |
| |
| media_pipeline_stop(&video->ve.vdev.entity); |
| video->streaming = 0; |
| return 0; |
| } |
| |
| static int isp_video_reqbufs(struct file *file, void *priv, |
| struct v4l2_requestbuffers *rb) |
| { |
| struct fimc_isp *isp = video_drvdata(file); |
| int ret; |
| |
| ret = vb2_ioctl_reqbufs(file, priv, rb); |
| if (ret < 0) |
| return ret; |
| |
| if (rb->count && rb->count < FIMC_ISP_REQ_BUFS_MIN) { |
| rb->count = 0; |
| vb2_ioctl_reqbufs(file, priv, rb); |
| ret = -ENOMEM; |
| } |
| |
| isp->video_capture.reqbufs_count = rb->count; |
| return ret; |
| } |
| |
| static const struct v4l2_ioctl_ops isp_video_ioctl_ops = { |
| .vidioc_querycap = isp_video_querycap, |
| .vidioc_enum_fmt_vid_cap = isp_video_enum_fmt, |
| .vidioc_try_fmt_vid_cap_mplane = isp_video_try_fmt_mplane, |
| .vidioc_s_fmt_vid_cap_mplane = isp_video_s_fmt_mplane, |
| .vidioc_g_fmt_vid_cap_mplane = isp_video_g_fmt_mplane, |
| .vidioc_reqbufs = isp_video_reqbufs, |
| .vidioc_querybuf = vb2_ioctl_querybuf, |
| .vidioc_prepare_buf = vb2_ioctl_prepare_buf, |
| .vidioc_create_bufs = vb2_ioctl_create_bufs, |
| .vidioc_qbuf = vb2_ioctl_qbuf, |
| .vidioc_dqbuf = vb2_ioctl_dqbuf, |
| .vidioc_streamon = isp_video_streamon, |
| .vidioc_streamoff = isp_video_streamoff, |
| }; |
| |
| int fimc_isp_video_device_register(struct fimc_isp *isp, |
| struct v4l2_device *v4l2_dev, |
| enum v4l2_buf_type type) |
| { |
| struct vb2_queue *q = &isp->video_capture.vb_queue; |
| struct fimc_is_video *iv; |
| struct video_device *vdev; |
| int ret; |
| |
| if (type == V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE) |
| iv = &isp->video_capture; |
| else |
| return -ENOSYS; |
| |
| mutex_init(&isp->video_lock); |
| INIT_LIST_HEAD(&iv->pending_buf_q); |
| INIT_LIST_HEAD(&iv->active_buf_q); |
| iv->format = fimc_isp_find_format(NULL, NULL, 0); |
| iv->pixfmt.width = IS_DEFAULT_WIDTH; |
| iv->pixfmt.height = IS_DEFAULT_HEIGHT; |
| iv->pixfmt.pixelformat = iv->format->fourcc; |
| iv->pixfmt.colorspace = V4L2_COLORSPACE_SRGB; |
| iv->reqbufs_count = 0; |
| |
| memset(q, 0, sizeof(*q)); |
| q->type = type; |
| q->io_modes = VB2_MMAP | VB2_USERPTR; |
| q->ops = &isp_video_capture_qops; |
| q->mem_ops = &vb2_dma_contig_memops; |
| q->buf_struct_size = sizeof(struct isp_video_buf); |
| q->drv_priv = isp; |
| q->timestamp_flags = V4L2_BUF_FLAG_TIMESTAMP_MONOTONIC; |
| q->lock = &isp->video_lock; |
| q->dev = &isp->pdev->dev; |
| |
| ret = vb2_queue_init(q); |
| if (ret < 0) |
| return ret; |
| |
| vdev = &iv->ve.vdev; |
| memset(vdev, 0, sizeof(*vdev)); |
| strscpy(vdev->name, "fimc-is-isp.capture", sizeof(vdev->name)); |
| vdev->queue = q; |
| vdev->fops = &isp_video_fops; |
| vdev->ioctl_ops = &isp_video_ioctl_ops; |
| vdev->v4l2_dev = v4l2_dev; |
| vdev->minor = -1; |
| vdev->release = video_device_release_empty; |
| vdev->lock = &isp->video_lock; |
| vdev->device_caps = V4L2_CAP_STREAMING | V4L2_CAP_VIDEO_CAPTURE_MPLANE; |
| |
| iv->pad.flags = MEDIA_PAD_FL_SINK; |
| ret = media_entity_pads_init(&vdev->entity, 1, &iv->pad); |
| if (ret < 0) |
| return ret; |
| |
| video_set_drvdata(vdev, isp); |
| |
| ret = video_register_device(vdev, VFL_TYPE_VIDEO, -1); |
| if (ret < 0) { |
| media_entity_cleanup(&vdev->entity); |
| return ret; |
| } |
| |
| v4l2_info(v4l2_dev, "Registered %s as /dev/%s\n", |
| vdev->name, video_device_node_name(vdev)); |
| |
| return 0; |
| } |
| |
| void fimc_isp_video_device_unregister(struct fimc_isp *isp, |
| enum v4l2_buf_type type) |
| { |
| struct exynos_video_entity *ve; |
| |
| if (type == V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE) |
| ve = &isp->video_capture.ve; |
| else |
| return; |
| |
| mutex_lock(&isp->video_lock); |
| |
| if (video_is_registered(&ve->vdev)) { |
| video_unregister_device(&ve->vdev); |
| media_entity_cleanup(&ve->vdev.entity); |
| ve->pipe = NULL; |
| } |
| |
| mutex_unlock(&isp->video_lock); |
| } |