spin_unlock_irqrestore(&pcdev->lock, flags);
}
-static void pxa_buffer_cleanup(struct pxa_buffer *buf)
-{
- int i;
-
- for (i = 0; i < 3 && buf->descs[i]; i++) {
- dmaengine_desc_free(buf->descs[i]);
- kfree(buf->sg[i]);
- buf->descs[i] = NULL;
- buf->sg[i] = NULL;
- buf->sg_len[i] = 0;
- buf->plane_sizes[i] = 0;
- }
- buf->nb_planes = 0;
-}
-
-static int pxa_buffer_init(struct pxa_camera_dev *pcdev,
- struct pxa_buffer *buf)
-{
- struct vb2_buffer *vb = &buf->vbuf.vb2_buf;
- struct sg_table *sgt = vb2_dma_sg_plane_desc(vb, 0);
- int nb_channels = pcdev->channels;
- int i, ret = 0;
- unsigned long size = vb2_plane_size(vb, 0);
-
- switch (nb_channels) {
- case 1:
- buf->plane_sizes[0] = size;
- break;
- case 3:
- buf->plane_sizes[0] = size / 2;
- buf->plane_sizes[1] = size / 4;
- buf->plane_sizes[2] = size / 4;
- break;
- default:
- return -EINVAL;
- };
- buf->nb_planes = nb_channels;
-
- ret = sg_split(sgt->sgl, sgt->nents, 0, nb_channels,
- buf->plane_sizes, buf->sg, buf->sg_len, GFP_KERNEL);
- if (ret < 0) {
- dev_err(pcdev_to_dev(pcdev),
- "sg_split failed: %d\n", ret);
- return ret;
- }
- for (i = 0; i < nb_channels; i++) {
- ret = pxa_init_dma_channel(pcdev, buf, i,
- buf->sg[i], buf->sg_len[i]);
- if (ret) {
- pxa_buffer_cleanup(buf);
- return ret;
- }
- }
- INIT_LIST_HEAD(&buf->queue);
-
- return ret;
-}
-
-static void pxac_vb2_cleanup(struct vb2_buffer *vb)
-{
- struct pxa_buffer *buf = vb2_to_pxa_buffer(vb);
- struct pxa_camera_dev *pcdev = vb2_get_drv_priv(vb->vb2_queue);
-
- dev_dbg(pcdev_to_dev(pcdev),
- "%s(vb=%p)\n", __func__, vb);
- pxa_buffer_cleanup(buf);
-}
-
-static void pxac_vb2_queue(struct vb2_buffer *vb)
-{
- struct pxa_buffer *buf = vb2_to_pxa_buffer(vb);
- struct pxa_camera_dev *pcdev = vb2_get_drv_priv(vb->vb2_queue);
-
- dev_dbg(pcdev_to_dev(pcdev),
- "%s(vb=%p) nb_channels=%d size=%lu active=%p\n",
- __func__, vb, pcdev->channels, vb2_get_plane_payload(vb, 0),
- pcdev->active);
-
- list_add_tail(&buf->queue, &pcdev->capture);
-
- pxa_dma_add_tail_buf(pcdev, buf);
-}
-
-/*
- * Please check the DMA prepared buffer structure in :
- * Documentation/video4linux/pxa_camera.txt
- * Please check also in pxa_camera_check_link_miss() to understand why DMA chain
- * modification while DMA chain is running will work anyway.
- */
-static int pxac_vb2_prepare(struct vb2_buffer *vb)
-{
- struct pxa_camera_dev *pcdev = vb2_get_drv_priv(vb->vb2_queue);
- struct pxa_buffer *buf = vb2_to_pxa_buffer(vb);
- struct soc_camera_device *icd = soc_camera_from_vb2q(vb->vb2_queue);
- int ret = 0;
-
- switch (pcdev->channels) {
- case 1:
- case 3:
- vb2_set_plane_payload(vb, 0, icd->sizeimage);
- break;
- default:
- return -EINVAL;
- }
-
- dev_dbg(pcdev_to_dev(pcdev),
- "%s (vb=%p) nb_channels=%d size=%lu\n",
- __func__, vb, pcdev->channels, vb2_get_plane_payload(vb, 0));
-
- WARN_ON(!icd->current_fmt);
-
-#ifdef DEBUG
- /*
- * This can be useful if you want to see if we actually fill
- * the buffer with something
- */
- for (i = 0; i < vb->num_planes; i++)
- memset((void *)vb2_plane_vaddr(vb, i),
- 0xaa, vb2_get_plane_payload(vb, i));
-#endif
-
- /*
- * I think, in buf_prepare you only have to protect global data,
- * the actual buffer is yours
- */
- buf->inwork = 0;
- pxa_videobuf_set_actdma(pcdev, buf);
-
- return ret;
-}
-
-static int pxac_vb2_init(struct vb2_buffer *vb)
-{
- struct pxa_camera_dev *pcdev = vb2_get_drv_priv(vb->vb2_queue);
- struct pxa_buffer *buf = vb2_to_pxa_buffer(vb);
-
- dev_dbg(pcdev_to_dev(pcdev),
- "%s(nb_channels=%d)\n",
- __func__, pcdev->channels);
-
- return pxa_buffer_init(pcdev, buf);
-}
-
-static int pxac_vb2_queue_setup(struct vb2_queue *vq,
- unsigned int *nbufs,
- unsigned int *num_planes, unsigned int sizes[],
- struct device *alloc_devs[])
-{
- struct pxa_camera_dev *pcdev = vb2_get_drv_priv(vq);
- struct soc_camera_device *icd = soc_camera_from_vb2q(vq);
- int size = icd->sizeimage;
-
- dev_dbg(pcdev_to_dev(pcdev),
- "%s(vq=%p nbufs=%d num_planes=%d size=%d)\n",
- __func__, vq, *nbufs, *num_planes, size);
- /*
- * Called from VIDIOC_REQBUFS or in compatibility mode For YUV422P
- * format, even if there are 3 planes Y, U and V, we reply there is only
- * one plane, containing Y, U and V data, one after the other.
- */
- if (*num_planes)
- return sizes[0] < size ? -EINVAL : 0;
-
- *num_planes = 1;
- switch (pcdev->channels) {
- case 1:
- case 3:
- sizes[0] = size;
- break;
- default:
- return -EINVAL;
- }
-
- if (!*nbufs)
- *nbufs = 1;
-
- return 0;
-}
-
-static int pxac_vb2_start_streaming(struct vb2_queue *vq, unsigned int count)
-{
- struct pxa_camera_dev *pcdev = vb2_get_drv_priv(vq);
-
- dev_dbg(pcdev_to_dev(pcdev), "%s(count=%d) active=%p\n",
- __func__, count, pcdev->active);
-
- if (!pcdev->active)
- pxa_camera_start_capture(pcdev);
-
- return 0;
-}
-
-static void pxac_vb2_stop_streaming(struct vb2_queue *vq)
-{
- vb2_wait_for_all_buffers(vq);
-}
-
-static struct vb2_ops pxac_vb2_ops = {
- .queue_setup = pxac_vb2_queue_setup,
- .buf_init = pxac_vb2_init,
- .buf_prepare = pxac_vb2_prepare,
- .buf_queue = pxac_vb2_queue,
- .buf_cleanup = pxac_vb2_cleanup,
- .start_streaming = pxac_vb2_start_streaming,
- .stop_streaming = pxac_vb2_stop_streaming,
- .wait_prepare = vb2_ops_wait_prepare,
- .wait_finish = vb2_ops_wait_finish,
-};
-
-static int pxa_camera_init_videobuf2(struct vb2_queue *vq,
- struct soc_camera_device *icd)
-{
- struct soc_camera_host *ici = to_soc_camera_host(icd->parent);
- struct pxa_camera_dev *pcdev = ici->priv;
- int ret;
-
- vq->type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
- vq->io_modes = VB2_MMAP | VB2_USERPTR | VB2_DMABUF;
- vq->drv_priv = pcdev;
- vq->timestamp_flags = V4L2_BUF_FLAG_TIMESTAMP_MONOTONIC;
- vq->buf_struct_size = sizeof(struct pxa_buffer);
-
- vq->ops = &pxac_vb2_ops;
- vq->mem_ops = &vb2_dma_sg_memops;
-
- ret = vb2_queue_init(vq);
- dev_dbg(pcdev_to_dev(pcdev),
- "vb2_queue_init(vq=%p): %d\n", vq, ret);
-
- return ret;
-}
-
static u32 mclk_get_divisor(struct platform_device *pdev,
struct pxa_camera_dev *pcdev)
{
__raw_writel(cicr0, pcdev->base + CICR0);
}
+/*
+ * Videobuf2 section
+ */
+static void pxa_buffer_cleanup(struct pxa_buffer *buf)
+{
+ int i;
+
+ for (i = 0; i < 3 && buf->descs[i]; i++) {
+ dmaengine_desc_free(buf->descs[i]);
+ kfree(buf->sg[i]);
+ buf->descs[i] = NULL;
+ buf->sg[i] = NULL;
+ buf->sg_len[i] = 0;
+ buf->plane_sizes[i] = 0;
+ }
+ buf->nb_planes = 0;
+}
+
+static int pxa_buffer_init(struct pxa_camera_dev *pcdev,
+ struct pxa_buffer *buf)
+{
+ struct vb2_buffer *vb = &buf->vbuf.vb2_buf;
+ struct sg_table *sgt = vb2_dma_sg_plane_desc(vb, 0);
+ int nb_channels = pcdev->channels;
+ int i, ret = 0;
+ unsigned long size = vb2_plane_size(vb, 0);
+
+ switch (nb_channels) {
+ case 1:
+ buf->plane_sizes[0] = size;
+ break;
+ case 3:
+ buf->plane_sizes[0] = size / 2;
+ buf->plane_sizes[1] = size / 4;
+ buf->plane_sizes[2] = size / 4;
+ break;
+ default:
+ return -EINVAL;
+ };
+ buf->nb_planes = nb_channels;
+
+ ret = sg_split(sgt->sgl, sgt->nents, 0, nb_channels,
+ buf->plane_sizes, buf->sg, buf->sg_len, GFP_KERNEL);
+ if (ret < 0) {
+ dev_err(pcdev_to_dev(pcdev),
+ "sg_split failed: %d\n", ret);
+ return ret;
+ }
+ for (i = 0; i < nb_channels; i++) {
+ ret = pxa_init_dma_channel(pcdev, buf, i,
+ buf->sg[i], buf->sg_len[i]);
+ if (ret) {
+ pxa_buffer_cleanup(buf);
+ return ret;
+ }
+ }
+ INIT_LIST_HEAD(&buf->queue);
+
+ return ret;
+}
+
+static void pxac_vb2_cleanup(struct vb2_buffer *vb)
+{
+ struct pxa_buffer *buf = vb2_to_pxa_buffer(vb);
+ struct pxa_camera_dev *pcdev = vb2_get_drv_priv(vb->vb2_queue);
+
+ dev_dbg(pcdev_to_dev(pcdev),
+ "%s(vb=%p)\n", __func__, vb);
+ pxa_buffer_cleanup(buf);
+}
+
+static void pxac_vb2_queue(struct vb2_buffer *vb)
+{
+ struct pxa_buffer *buf = vb2_to_pxa_buffer(vb);
+ struct pxa_camera_dev *pcdev = vb2_get_drv_priv(vb->vb2_queue);
+
+ dev_dbg(pcdev_to_dev(pcdev),
+ "%s(vb=%p) nb_channels=%d size=%lu active=%p\n",
+ __func__, vb, pcdev->channels, vb2_get_plane_payload(vb, 0),
+ pcdev->active);
+
+ list_add_tail(&buf->queue, &pcdev->capture);
+
+ pxa_dma_add_tail_buf(pcdev, buf);
+}
+
+/*
+ * Please check the DMA prepared buffer structure in :
+ * Documentation/video4linux/pxa_camera.txt
+ * Please check also in pxa_camera_check_link_miss() to understand why DMA chain
+ * modification while DMA chain is running will work anyway.
+ */
+static int pxac_vb2_prepare(struct vb2_buffer *vb)
+{
+ struct pxa_camera_dev *pcdev = vb2_get_drv_priv(vb->vb2_queue);
+ struct pxa_buffer *buf = vb2_to_pxa_buffer(vb);
+ struct soc_camera_device *icd = soc_camera_from_vb2q(vb->vb2_queue);
+ int ret = 0;
+
+ switch (pcdev->channels) {
+ case 1:
+ case 3:
+ vb2_set_plane_payload(vb, 0, icd->sizeimage);
+ break;
+ default:
+ return -EINVAL;
+ }
+
+ dev_dbg(pcdev_to_dev(pcdev),
+ "%s (vb=%p) nb_channels=%d size=%lu\n",
+ __func__, vb, pcdev->channels, vb2_get_plane_payload(vb, 0));
+
+ WARN_ON(!icd->current_fmt);
+
+#ifdef DEBUG
+ /*
+ * This can be useful if you want to see if we actually fill
+ * the buffer with something
+ */
+ for (i = 0; i < vb->num_planes; i++)
+ memset((void *)vb2_plane_vaddr(vb, i),
+ 0xaa, vb2_get_plane_payload(vb, i));
+#endif
+
+ /*
+ * I think, in buf_prepare you only have to protect global data,
+ * the actual buffer is yours
+ */
+ buf->inwork = 0;
+ pxa_videobuf_set_actdma(pcdev, buf);
+
+ return ret;
+}
+
+static int pxac_vb2_init(struct vb2_buffer *vb)
+{
+ struct pxa_camera_dev *pcdev = vb2_get_drv_priv(vb->vb2_queue);
+ struct pxa_buffer *buf = vb2_to_pxa_buffer(vb);
+
+ dev_dbg(pcdev_to_dev(pcdev),
+ "%s(nb_channels=%d)\n",
+ __func__, pcdev->channels);
+
+ return pxa_buffer_init(pcdev, buf);
+}
+
+static int pxac_vb2_queue_setup(struct vb2_queue *vq,
+ unsigned int *nbufs,
+ unsigned int *num_planes, unsigned int sizes[],
+ struct device *alloc_devs[])
+{
+ struct pxa_camera_dev *pcdev = vb2_get_drv_priv(vq);
+ struct soc_camera_device *icd = soc_camera_from_vb2q(vq);
+ int size = icd->sizeimage;
+
+ dev_dbg(pcdev_to_dev(pcdev),
+ "%s(vq=%p nbufs=%d num_planes=%d size=%d)\n",
+ __func__, vq, *nbufs, *num_planes, size);
+ /*
+ * Called from VIDIOC_REQBUFS or in compatibility mode For YUV422P
+ * format, even if there are 3 planes Y, U and V, we reply there is only
+ * one plane, containing Y, U and V data, one after the other.
+ */
+ if (*num_planes)
+ return sizes[0] < size ? -EINVAL : 0;
+
+ *num_planes = 1;
+ switch (pcdev->channels) {
+ case 1:
+ case 3:
+ sizes[0] = size;
+ break;
+ default:
+ return -EINVAL;
+ }
+
+ if (!*nbufs)
+ *nbufs = 1;
+
+ return 0;
+}
+
+static int pxac_vb2_start_streaming(struct vb2_queue *vq, unsigned int count)
+{
+ struct pxa_camera_dev *pcdev = vb2_get_drv_priv(vq);
+
+ dev_dbg(pcdev_to_dev(pcdev), "%s(count=%d) active=%p\n",
+ __func__, count, pcdev->active);
+
+ if (!pcdev->active)
+ pxa_camera_start_capture(pcdev);
+
+ return 0;
+}
+
+static void pxac_vb2_stop_streaming(struct vb2_queue *vq)
+{
+ vb2_wait_for_all_buffers(vq);
+}
+
+static struct vb2_ops pxac_vb2_ops = {
+ .queue_setup = pxac_vb2_queue_setup,
+ .buf_init = pxac_vb2_init,
+ .buf_prepare = pxac_vb2_prepare,
+ .buf_queue = pxac_vb2_queue,
+ .buf_cleanup = pxac_vb2_cleanup,
+ .start_streaming = pxac_vb2_start_streaming,
+ .stop_streaming = pxac_vb2_stop_streaming,
+ .wait_prepare = vb2_ops_wait_prepare,
+ .wait_finish = vb2_ops_wait_finish,
+};
+
+static int pxa_camera_init_videobuf2(struct vb2_queue *vq,
+ struct soc_camera_device *icd)
+{
+ struct soc_camera_host *ici = to_soc_camera_host(icd->parent);
+ struct pxa_camera_dev *pcdev = ici->priv;
+ int ret;
+
+ vq->type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
+ vq->io_modes = VB2_MMAP | VB2_USERPTR | VB2_DMABUF;
+ vq->drv_priv = pcdev;
+ vq->timestamp_flags = V4L2_BUF_FLAG_TIMESTAMP_MONOTONIC;
+ vq->buf_struct_size = sizeof(struct pxa_buffer);
+
+ vq->ops = &pxac_vb2_ops;
+ vq->mem_ops = &vb2_dma_sg_memops;
+
+ ret = vb2_queue_init(vq);
+ dev_dbg(pcdev_to_dev(pcdev),
+ "vb2_queue_init(vq=%p): %d\n", vq, ret);
+
+ return ret;
+}
+
+/*
+ * Video ioctls section
+ */
static int pxa_camera_set_bus_param(struct soc_camera_device *icd)
{
struct v4l2_subdev *sd = soc_camera_to_subdev(icd);
return 0;
}
+/*
+ * Driver probe, remove, suspend and resume operations
+ */
static int pxa_camera_suspend(struct device *dev)
{
struct soc_camera_host *ici = to_soc_camera_host(dev);
git.samba.org / sfrench / cifs-2.6.git / blobdiff