--- /dev/null
+/*
+ * 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>.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ */
+
+#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-core.h>
+#include <media/videobuf2-dma-contig.h>
+#include <media/s5p_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,
+ const struct v4l2_format *pfmt,
+ unsigned int *num_buffers, unsigned int *num_planes,
+ unsigned int sizes[], void *allocators[])
+{
+ struct fimc_isp *isp = vb2_get_drv_priv(vq);
+ struct v4l2_pix_format_mplane *vid_fmt = &isp->video_capture.pixfmt;
+ const struct v4l2_pix_format_mplane *pixm = NULL;
+ const struct fimc_fmt *fmt;
+ unsigned int wh, i;
+
+ if (pfmt) {
+ pixm = &pfmt->fmt.pix_mp;
+ fmt = fimc_isp_find_format(&pixm->pixelformat, NULL, -1);
+ wh = pixm->width * pixm->height;
+ } else {
+ fmt = isp->video_capture.format;
+ 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);
+ *num_planes = fmt->memplanes;
+
+ for (i = 0; i < fmt->memplanes; i++) {
+ unsigned int size = (wh * fmt->depth[i]) / 8;
+ if (pixm)
+ sizes[i] = max(size, pixm->plane_fmt[i].sizeimage);
+ else
+ sizes[i] = size;
+ allocators[i] = isp->alloc_ctx;
+ }
+
+ 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 int 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 ret;
+
+ 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;
+ return 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 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(vb);
+ 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: %#x\n",
+ buf_index, ivb->index, i, vb->v4l2_buf.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_buffer *vb;
+ 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;
+ vb = &video->buffers[buf_index]->vb;
+
+ v4l2_get_timestamp(&vb->v4l2_buf.timestamp);
+ vb2_buffer_done(vb, 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->parent->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->parent->graph_mutex);
+ }
+ if (!ret)
+ goto unlock;
+rel_fh:
+ 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->parent;
+ int ret = 0;
+
+ mutex_lock(&isp->video_lock);
+
+ if (v4l2_fh_is_singular_file(file) && ivc->streaming) {
+ media_entity_pipeline_stop(entity);
+ ivc->streaming = 0;
+ }
+
+ vb2_fop_release(file);
+
+ 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 ret;
+}
+
+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, V4L2_CAP_STREAMING);
+ return 0;
+}
+
+static int isp_video_enum_fmt_mplane(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;
+
+ strlcpy(f->description, fmt->name, sizeof(f->description));
+ 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)
+{
+ *fmt = fimc_isp_find_format(&pixm->pixelformat, NULL, 2);
+
+ 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 == NULL ||
+ media_entity_type(pad->entity) != MEDIA_ENT_T_V4L2_SUBDEV)
+ 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_entity_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_entity_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_entity_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_mplane = isp_video_enum_fmt_mplane,
+ .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;
+
+ ret = vb2_queue_init(q);
+ if (ret < 0)
+ return ret;
+
+ vdev = &iv->ve.vdev;
+ memset(vdev, 0, sizeof(*vdev));
+ snprintf(vdev->name, sizeof(vdev->name), "fimc-is-isp.%s",
+ type == V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE ?
+ "capture" : "output");
+ 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;
+
+ iv->pad.flags = MEDIA_PAD_FL_SINK;
+ ret = media_entity_init(&vdev->entity, 1, &iv->pad, 0);
+ if (ret < 0)
+ return ret;
+
+ video_set_drvdata(vdev, isp);
+
+ ret = video_register_device(vdev, VFL_TYPE_GRABBER, -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);
+}
projects / firefly-linux-kernel-4.4.55.git / commitdiff