Commit eb3fe7de authored by Peter Ujfalusi's avatar Peter Ujfalusi Committed by Vinod Koul

ARM: edma: Add edma_assign_channel_eventq() to move channel to a give queue

In some cases it is desired to move a channel to a specific event queue.
Such a use case is audio, where it is preferred that it is served with
highest priority compared to other DMA clients.
Signed-off-by: default avatarPeter Ujfalusi <peter.ujfalusi@ti.com>
Acked-by: default avatarSekhar Nori <nsekhar@ti.com>
Signed-off-by: default avatarVinod Koul <vinod.koul@intel.com>
parent 85a70762
......@@ -1414,6 +1414,34 @@ void edma_clear_event(unsigned channel)
}
EXPORT_SYMBOL(edma_clear_event);
/*
* edma_assign_channel_eventq - move given channel to desired eventq
* Arguments:
* channel - channel number
* eventq_no - queue to move the channel
*
* Can be used to move a channel to a selected event queue.
*/
void edma_assign_channel_eventq(unsigned channel, enum dma_event_q eventq_no)
{
unsigned ctlr;
ctlr = EDMA_CTLR(channel);
channel = EDMA_CHAN_SLOT(channel);
if (channel >= edma_cc[ctlr]->num_channels)
return;
/* default to low priority queue */
if (eventq_no == EVENTQ_DEFAULT)
eventq_no = edma_cc[ctlr]->default_queue;
if (eventq_no >= edma_cc[ctlr]->num_tc)
return;
map_dmach_queue(ctlr, channel, eventq_no);
}
EXPORT_SYMBOL(edma_assign_channel_eventq);
static int edma_setup_from_hw(struct device *dev, struct edma_soc_info *pdata,
struct edma *edma_cc)
{
......
......@@ -150,6 +150,8 @@ void edma_clear_event(unsigned channel);
void edma_pause(unsigned channel);
void edma_resume(unsigned channel);
void edma_assign_channel_eventq(unsigned channel, enum dma_event_q eventq_no);
struct edma_rsv_info {
const s16 (*rsv_chans)[2];
......
Markdown is supported
0%
or
You are about to add 0 people to the discussion. Proceed with caution.
Finish editing this message first!
Please register or to comment