/**
* @brief: for ak_videobuf_release, free buffer if camera stopped.
*
* @author: caolianming
* @date: 2014-01-06
* @param [in] *vq: V4L2 buffer queue information structure
* @param [in] *buf: ak camera drivers structure, include struct videobuf_buffer
*/
static void free_buffer(struct videobuf_queue *vq, struct ak_buffer *buf)
{
struct soc_camera_device *icd = vq->priv_data;
struct videobuf_buffer *vb = &buf->vb;
struct soc_camera_host *ici = to_soc_camera_host(icd->parent);
struct ak_camera_dev *pcdev = ici->priv;
isp_dbg("%s (vb=0x%p) buf[%d] 0x%08lx %d\n",
__func__, vb, vb->i, vb->baddr, vb->bsize);
BUG_ON(in_interrupt());
/* This waits until this buffer is out of danger, i.e., until it is no
* longer in STATE_QUEUED or STATE_ACTIVE */
if (vb->state == VIDEOBUF_ACTIVE && !pcdev->dma_running) {
printk("free_buffer: dma_running=%d, doesn't neee to wait\n", pcdev->dma_running);
//vb->state = VIDEOBUF_ERROR;
list_del(&vb->queue);
} else {
vb->state = VIDEOBUF_DONE;
videobuf_waiton(vq, vb, 0, 0);
}
videobuf_dma_contig_free(vq, vb);
vb->state = VIDEOBUF_NEEDS_INIT;
}
static int solo_buf_prepare(struct videobuf_queue *vq,
struct videobuf_buffer *vb, enum v4l2_field field)
{
struct solo_filehandle *fh = vq->priv_data;
struct solo6010_dev *solo_dev = fh->solo_dev;
vb->size = solo_image_size(solo_dev);
if (vb->baddr != 0 && vb->bsize < vb->size)
return -EINVAL;
/* XXX: These properties only change when queue is idle */
vb->width = solo_dev->video_hsize;
vb->height = solo_vlines(solo_dev);
vb->bytesperline = solo_bytesperline(solo_dev);
vb->field = field;
if (vb->state == VIDEOBUF_NEEDS_INIT) {
int rc = videobuf_iolock(vq, vb, NULL);
if (rc < 0) {
videobuf_dma_contig_free(vq, vb);
vb->state = VIDEOBUF_NEEDS_INIT;
return rc;
}
}
vb->state = VIDEOBUF_PREPARED;
return 0;
}
/**
* vpif_buffer_release : Callback function to free buffer
* @q: buffer queue ptr
* @vb: ptr to video buffer
*
* This function is called from the videobuf layer to free memory
* allocated to the buffers
*/
static void vpif_buffer_release(struct videobuf_queue *q,
struct videobuf_buffer *vb)
{
/* Get the file handle object and channel object */
struct vpif_fh *fh = q->priv_data;
struct channel_obj *ch = fh->channel;
struct common_obj *common;
common = &ch->common[VPIF_VIDEO_INDEX];
videobuf_dma_contig_free(q, vb);
vb->state = VIDEOBUF_NEEDS_INIT;
}
static void free_buffer(struct videobuf_queue *vq,
struct sh_mobile_ceu_buffer *buf)
{
struct soc_camera_device *icd = vq->priv_data;
dev_dbg(&icd->dev, "%s (vb=0x%p) 0x%08lx %zd\n", __func__,
&buf->vb, buf->vb.baddr, buf->vb.bsize);
if (in_interrupt())
BUG();
videobuf_dma_contig_free(vq, &buf->vb);
dev_dbg(&icd->dev, "%s freed\n", __func__);
buf->vb.state = VIDEOBUF_NEEDS_INIT;
}
static void free_buffer(struct videobuf_queue *vq, struct mx1_buffer *buf)
{
struct soc_camera_device *icd = vq->priv_data;
struct videobuf_buffer *vb = &buf->vb;
BUG_ON(in_interrupt());
dev_dbg(icd->parent, "%s (vb=0x%p) 0x%08lx %d\n", __func__,
vb, vb->baddr, vb->bsize);
videobuf_waiton(vq, vb, 0, 0);
videobuf_dma_contig_free(vq, vb);
vb->state = VIDEOBUF_NEEDS_INIT;
}
/*
* vpif_buffer_release: This function is called from the videobuf layer to
* free memory allocated to the buffers
*/
static void vpif_buffer_release(struct videobuf_queue *q,
struct videobuf_buffer *vb)
{
struct vpif_fh *fh = q->priv_data;
struct channel_obj *ch = fh->channel;
struct common_obj *common;
unsigned int buf_size = 0;
common = &ch->common[VPIF_VIDEO_INDEX];
videobuf_dma_contig_free(q, vb);
vb->state = VIDEOBUF_NEEDS_INIT;
if (V4L2_MEMORY_MMAP != common->memory)
return;
buf_size = config_params.channel_bufsize[ch->channel_id];
}
static void free_buffer(struct videobuf_queue *vq, struct jz4780_buffer *buf)
{
struct videobuf_buffer *vb = &buf->vb;
BUG_ON(in_interrupt());
dprintk(7, "%s (vb=0x%p) 0x%08lx %d\n", __func__,
vb, vb->baddr, vb->bsize);
/*
* This waits until this buffer is out of danger, i.e., until it is no
* longer in STATE_QUEUED or STATE_ACTIVE
*/
videobuf_waiton(vq, vb, 0, 0);
videobuf_dma_contig_free(vq, vb);
vb->state = VIDEOBUF_NEEDS_INIT;
}
static void free_buffer(struct videobuf_queue *vq, struct mx1_buffer *buf)
{
struct soc_camera_device *icd = vq->priv_data;
struct videobuf_buffer *vb = &buf->vb;
BUG_ON(in_interrupt());
dev_dbg(icd->parent, "%s (vb=0x%p) 0x%08lx %d\n", __func__,
vb, vb->baddr, vb->bsize);
/*
* This waits until this buffer is out of danger, i.e., until it is no
* longer in STATE_QUEUED or STATE_ACTIVE
*/
videobuf_waiton(vq, vb, 0, 0);
videobuf_dma_contig_free(vq, vb);
vb->state = VIDEOBUF_NEEDS_INIT;
}
static void free_buffer(struct videobuf_queue *vq, struct omap1_cam_buf *buf,
enum omap1_cam_vb_mode vb_mode)
{
struct videobuf_buffer *vb = &buf->vb;
BUG_ON(in_interrupt());
videobuf_waiton(vq, vb, 0, 0);
if (vb_mode == OMAP1_CAM_DMA_CONTIG) {
videobuf_dma_contig_free(vq, vb);
} else {
struct soc_camera_device *icd = vq->priv_data;
struct device *dev = icd->dev.parent;
struct videobuf_dmabuf *dma = videobuf_to_dma(vb);
videobuf_dma_unmap(dev, dma);
videobuf_dma_free(dma);
}
vb->state = VIDEOBUF_NEEDS_INIT;
}
static void solo_buf_release(struct videobuf_queue *vq,
struct videobuf_buffer *vb)
{
videobuf_dma_contig_free(vq, vb);
vb->state = VIDEOBUF_NEEDS_INIT;
}