#include <mach/coh901318.h>
#include "coh901318_lli.h"
+#include "dmaengine.h"
#define COHC_2_DEV(cohc) (&cohc->chan.dev->device)
struct coh901318_chan {
spinlock_t lock;
int allocated;
- int completed;
int id;
int stopped;
return 0;
}
-static dma_cookie_t
-coh901318_assign_cookie(struct coh901318_chan *cohc,
- struct coh901318_desc *cohd)
-{
- dma_cookie_t cookie = cohc->chan.cookie;
-
- if (++cookie < 0)
- cookie = 1;
-
- cohc->chan.cookie = cookie;
- cohd->desc.cookie = cookie;
-
- return cookie;
-}
static struct coh901318_desc *
coh901318_desc_get(struct coh901318_chan *cohc)
callback_param = cohd_fin->desc.callback_param;
/* sign this job as completed on the channel */
- cohc->completed = cohd_fin->desc.cookie;
+ dma_cookie_complete(&cohd_fin->desc);
/* release the lli allocation and remove the descriptor */
coh901318_lli_free(&cohc->base->pool, &cohd_fin->lli);
coh901318_config(cohc, NULL);
cohc->allocated = 1;
- cohc->completed = chan->cookie = 1;
+ dma_cookie_init(chan);
spin_unlock_irqrestore(&cohc->lock, flags);
desc);
struct coh901318_chan *cohc = to_coh901318_chan(tx->chan);
unsigned long flags;
+ dma_cookie_t cookie;
spin_lock_irqsave(&cohc->lock, flags);
-
- tx->cookie = coh901318_assign_cookie(cohc, cohd);
+ cookie = dma_cookie_assign(tx);
coh901318_desc_queue(cohc, cohd);
spin_unlock_irqrestore(&cohc->lock, flags);
- return tx->cookie;
+ return cookie;
}
static struct dma_async_tx_descriptor *
static struct dma_async_tx_descriptor *
coh901318_prep_slave_sg(struct dma_chan *chan, struct scatterlist *sgl,
unsigned int sg_len, enum dma_transfer_direction direction,
- unsigned long flags)
+ unsigned long flags, void *context)
{
struct coh901318_chan *cohc = to_coh901318_chan(chan);
struct coh901318_lli *lli;
struct dma_tx_state *txstate)
{
struct coh901318_chan *cohc = to_coh901318_chan(chan);
- dma_cookie_t last_used;
- dma_cookie_t last_complete;
- int ret;
-
- last_complete = cohc->completed;
- last_used = chan->cookie;
+ enum dma_status ret;
- ret = dma_async_is_complete(cookie, last_complete, last_used);
+ ret = dma_cookie_status(chan, cookie, txstate);
+ /* FIXME: should be conditional on ret != DMA_SUCCESS? */
+ dma_set_residue(txstate, coh901318_get_bytes_left(chan));
- dma_set_tx_state(txstate, last_complete, last_used,
- coh901318_get_bytes_left(chan));
if (ret == DMA_IN_PROGRESS && cohc->stopped)
ret = DMA_PAUSED;