/*
* csi2_isr_buffer - Does buffer handling at end-of-frame
* when writing to memory.
*/
static void csi2_isr_buffer(struct iss_csi2_device *csi2)
{
struct iss_buffer *buffer;
csi2_ctx_enable(csi2, 0, 0);
buffer = omap4iss_video_buffer_next(&csi2->video_out);
/*
* Let video queue operation restart engine if there is an underrun
* condition.
*/
if (buffer == NULL)
return;
csi2_set_outaddr(csi2, buffer->iss_addr);
csi2_ctx_enable(csi2, 0, 1);
}
static void ipipeif_isr_buffer(struct iss_ipipeif_device *ipipeif)
{
struct iss_buffer *buffer;
/* The ISIF generates VD0 interrupts even when writes are disabled.
* deal with it anyway). Disabling the ISIF when no buffer is available
* is thus not be enough, we need to handle the situation explicitly.
*/
if (list_empty(&ipipeif->video_out.dmaqueue))
return;
ipipeif_write_enable(ipipeif, 0);
buffer = omap4iss_video_buffer_next(&ipipeif->video_out);
if (buffer == NULL)
return;
ipipeif_set_outaddr(ipipeif, buffer->iss_addr);
ipipeif_write_enable(ipipeif, 1);
}
