Same with this one - let's take it as is and address a couple of clean-ups
later.
On Thu, 30 Sep 2010, Janusz Krzysztofik wrote:
> +static void omap1_videobuf_queue(struct videobuf_queue *vq,
> + struct videobuf_buffer *vb)
> +{
> + struct soc_camera_device *icd = vq->priv_data;
> + struct soc_camera_host *ici = to_soc_camera_host(icd->dev.parent);
> + struct omap1_cam_dev *pcdev = ici->priv;
> + struct omap1_cam_buf *buf;
> + u32 mode;
> +
> + list_add_tail(&vb->queue, &pcdev->capture);
> + vb->state = VIDEOBUF_QUEUED;
> +
> + if (pcdev->active) {
> + /*
> + * Capture in progress, so don't touch pcdev->ready even if
> + * empty. Since the transfer of the DMA programming register set
> + * content to the DMA working register set is done automatically
> + * by the DMA hardware, this can pretty well happen while we
> + * are keeping the lock here. Levae fetching it from the queue
"Leave"
> + * to be done when a next DMA interrupt occures instead.
> + */
> + return;
> + }
superfluous braces
> +static void videobuf_done(struct omap1_cam_dev *pcdev,
> + enum videobuf_state result)
> +{
> + struct omap1_cam_buf *buf = pcdev->active;
> + struct videobuf_buffer *vb;
> + struct device *dev = pcdev->icd->dev.parent;
> +
> + if (WARN_ON(!buf)) {
> + suspend_capture(pcdev);
> + disable_capture(pcdev);
> + return;
> + }
> +
> + if (result == VIDEOBUF_ERROR)
> + suspend_capture(pcdev);
> +
> + vb = &buf->vb;
> + if (waitqueue_active(&vb->done)) {
> + if (!pcdev->ready && result != VIDEOBUF_ERROR) {
> + /*
> + * No next buffer has been entered into the DMA
> + * programming register set on time (could be done only
> + * while the previous DMA interurpt was processed, not
> + * later), so the last DMA block, be it a whole buffer
> + * if in CONTIG or its last sgbuf if in SG mode, is
> + * about to be reused by the just autoreinitialized DMA
> + * engine, and overwritten with next frame data. Best we
> + * can do is stopping the capture as soon as possible,
> + * hopefully before the next frame start.
> + */
> + suspend_capture(pcdev);
> + }
superfluous braces
Thanks
Guennadi
---
Guennadi Liakhovetski, Ph.D.
Freelance Open-Source Software Developer
http://www.open-technology.de/
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