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path: root/drivers/media/video/fsl-viu.c
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Diffstat (limited to 'drivers/media/video/fsl-viu.c')
-rw-r--r--drivers/media/video/fsl-viu.c56
1 files changed, 42 insertions, 14 deletions
diff --git a/drivers/media/video/fsl-viu.c b/drivers/media/video/fsl-viu.c
index 031af1610154..908d7012c3f2 100644
--- a/drivers/media/video/fsl-viu.c
+++ b/drivers/media/video/fsl-viu.c
@@ -766,7 +766,7 @@ inline void viu_activate_overlay(struct viu_reg *viu_reg)
out_be32(&vr->picture_count, reg_val.picture_count);
}
-static int viu_start_preview(struct viu_dev *dev, struct viu_fh *fh)
+static int viu_setup_preview(struct viu_dev *dev, struct viu_fh *fh)
{
int bpp;
@@ -805,11 +805,6 @@ static int viu_start_preview(struct viu_dev *dev, struct viu_fh *fh)
/* setup the base address of the overlay buffer */
reg_val.field_base_addr = (u32)dev->ovbuf.base;
- dev->ovenable = 1;
- viu_activate_overlay(dev->vr);
-
- /* start dma */
- viu_start_dma(dev);
return 0;
}
@@ -825,13 +820,11 @@ static int vidioc_s_fmt_overlay(struct file *file, void *priv,
if (err)
return err;
- mutex_lock(&dev->lock);
fh->win = f->fmt.win;
spin_lock_irqsave(&dev->slock, flags);
- viu_start_preview(dev, fh);
+ viu_setup_preview(dev, fh);
spin_unlock_irqrestore(&dev->slock, flags);
- mutex_unlock(&dev->lock);
return 0;
}
@@ -841,6 +834,28 @@ static int vidioc_try_fmt_overlay(struct file *file, void *priv,
return 0;
}
+static int vidioc_overlay(struct file *file, void *priv, unsigned int on)
+{
+ struct viu_fh *fh = priv;
+ struct viu_dev *dev = (struct viu_dev *)fh->dev;
+ unsigned long flags;
+
+ if (on) {
+ spin_lock_irqsave(&dev->slock, flags);
+ viu_activate_overlay(dev->vr);
+ dev->ovenable = 1;
+
+ /* start dma */
+ viu_start_dma(dev);
+ spin_unlock_irqrestore(&dev->slock, flags);
+ } else {
+ viu_stop_dma(dev);
+ dev->ovenable = 0;
+ }
+
+ return 0;
+}
+
int vidioc_g_fbuf(struct file *file, void *priv, struct v4l2_framebuffer *arg)
{
struct viu_fh *fh = priv;
@@ -911,12 +926,16 @@ static int vidioc_dqbuf(struct file *file, void *priv, struct v4l2_buffer *p)
static int vidioc_streamon(struct file *file, void *priv, enum v4l2_buf_type i)
{
struct viu_fh *fh = priv;
+ struct viu_dev *dev = fh->dev;
if (fh->type != V4L2_BUF_TYPE_VIDEO_CAPTURE)
return -EINVAL;
if (fh->type != i)
return -EINVAL;
+ if (dev->ovenable)
+ dev->ovenable = 0;
+
viu_start_dma(fh->dev);
return videobuf_streamon(&fh->vb_vidq);
@@ -1311,7 +1330,8 @@ static int viu_open(struct file *file)
videobuf_queue_dma_contig_init(&fh->vb_vidq, &viu_video_qops,
dev->dev, &fh->vbq_lock,
fh->type, V4L2_FIELD_INTERLACED,
- sizeof(struct viu_buf), fh, NULL);
+ sizeof(struct viu_buf), fh,
+ &fh->dev->lock);
return 0;
}
@@ -1401,7 +1421,7 @@ static struct v4l2_file_operations viu_fops = {
.release = viu_release,
.read = viu_read,
.poll = viu_poll,
- .ioctl = video_ioctl2, /* V4L2 ioctl handler */
+ .unlocked_ioctl = video_ioctl2, /* V4L2 ioctl handler */
.mmap = viu_mmap,
};
@@ -1415,6 +1435,7 @@ static const struct v4l2_ioctl_ops viu_ioctl_ops = {
.vidioc_g_fmt_vid_overlay = vidioc_g_fmt_overlay,
.vidioc_try_fmt_vid_overlay = vidioc_try_fmt_overlay,
.vidioc_s_fmt_vid_overlay = vidioc_s_fmt_overlay,
+ .vidioc_overlay = vidioc_overlay,
.vidioc_g_fbuf = vidioc_g_fbuf,
.vidioc_s_fbuf = vidioc_s_fbuf,
.vidioc_reqbufs = vidioc_reqbufs,
@@ -1498,9 +1519,6 @@ static int __devinit viu_of_probe(struct platform_device *op)
INIT_LIST_HEAD(&viu_dev->vidq.active);
INIT_LIST_HEAD(&viu_dev->vidq.queued);
- /* initialize locks */
- mutex_init(&viu_dev->lock);
-
snprintf(viu_dev->v4l2_dev.name,
sizeof(viu_dev->v4l2_dev.name), "%s", "VIU");
ret = v4l2_device_register(viu_dev->dev, &viu_dev->v4l2_dev);
@@ -1531,8 +1549,15 @@ static int __devinit viu_of_probe(struct platform_device *op)
viu_dev->vdev = vdev;
+ /* initialize locks */
+ mutex_init(&viu_dev->lock);
+ viu_dev->vdev->lock = &viu_dev->lock;
+ spin_lock_init(&viu_dev->slock);
+
video_set_drvdata(viu_dev->vdev, viu_dev);
+ mutex_lock(&viu_dev->lock);
+
ret = video_register_device(viu_dev->vdev, VFL_TYPE_GRABBER, -1);
if (ret < 0) {
video_device_release(viu_dev->vdev);
@@ -1559,6 +1584,8 @@ static int __devinit viu_of_probe(struct platform_device *op)
goto err_irq;
}
+ mutex_unlock(&viu_dev->lock);
+
dev_info(&op->dev, "Freescale VIU Video Capture Board\n");
return ret;
@@ -1568,6 +1595,7 @@ err_irq:
err_clk:
video_unregister_device(viu_dev->vdev);
err_vdev:
+ mutex_unlock(&viu_dev->lock);
i2c_put_adapter(ad);
v4l2_device_unregister(&viu_dev->v4l2_dev);
err: