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Diffstat (limited to 'drivers/dma/pl330.c')
-rw-r--r--drivers/dma/pl330.c37
1 files changed, 7 insertions, 30 deletions
diff --git a/drivers/dma/pl330.c b/drivers/dma/pl330.c
index 7253d17f05f8..e863d7fc465a 100644
--- a/drivers/dma/pl330.c
+++ b/drivers/dma/pl330.c
@@ -28,6 +28,7 @@
#include <linux/scatterlist.h>
#include <linux/of.h>
+#include "dmaengine.h"
#define PL330_MAX_CHAN 8
#define PL330_MAX_IRQS 32
#define PL330_MAX_PERI 32
@@ -285,6 +286,7 @@ static unsigned cmd_line;
#endif
/* The number of default descriptors */
+
#define NR_DEFAULT_DESC 16
/* Populated by the PL330 core driver for DMA API driver's info */
@@ -545,9 +547,6 @@ struct dma_pl330_chan {
/* DMA-Engine Channel */
struct dma_chan chan;
- /* Last completed cookie */
- dma_cookie_t completed;
-
/* List of to be xfered descriptors */
struct list_head work_list;
@@ -2320,7 +2319,7 @@ static void pl330_tasklet(unsigned long data)
/* Pick up ripe tomatoes */
list_for_each_entry_safe(desc, _dt, &pch->work_list, node)
if (desc->status == DONE) {
- pch->completed = desc->txd.cookie;
+ dma_cookie_complete(&desc->txd);
list_move_tail(&desc->node, &list);
}
@@ -2391,7 +2390,7 @@ static int pl330_alloc_chan_resources(struct dma_chan *chan)
spin_lock_irqsave(&pch->lock, flags);
- pch->completed = chan->cookie = 1;
+ dma_cookie_init(chan);
pch->cyclic = false;
pch->pl330_chid = pl330_request_channel(&pdmac->pif);
@@ -2426,7 +2425,6 @@ static int pl330_control(struct dma_chan *chan, enum dma_ctrl_cmd cmd, unsigned
/* Mark all desc done */
list_for_each_entry_safe(desc, _dt, &pch->work_list , node) {
desc->status = DONE;
- pch->completed = desc->txd.cookie;
list_move_tail(&desc->node, &list);
}
@@ -2482,18 +2480,7 @@ static enum dma_status
pl330_tx_status(struct dma_chan *chan, dma_cookie_t cookie,
struct dma_tx_state *txstate)
{
- struct dma_pl330_chan *pch = to_pchan(chan);
- dma_cookie_t last_done, last_used;
- int ret;
-
- last_done = pch->completed;
- last_used = chan->cookie;
-
- ret = dma_async_is_complete(cookie, last_done, last_used);
-
- dma_set_tx_state(txstate, last_done, last_used, 0);
-
- return ret;
+ return dma_cookie_status(chan, cookie, txstate);
}
static void pl330_issue_pending(struct dma_chan *chan)
@@ -2516,26 +2503,16 @@ static dma_cookie_t pl330_tx_submit(struct dma_async_tx_descriptor *tx)
spin_lock_irqsave(&pch->lock, flags);
/* Assign cookies to all nodes */
- cookie = tx->chan->cookie;
-
while (!list_empty(&last->node)) {
desc = list_entry(last->node.next, struct dma_pl330_desc, node);
- if (++cookie < 0)
- cookie = 1;
- desc->txd.cookie = cookie;
+ dma_cookie_assign(&desc->txd);
list_move_tail(&desc->node, &pch->work_list);
}
- if (++cookie < 0)
- cookie = 1;
- last->txd.cookie = cookie;
-
+ cookie = dma_cookie_assign(&last->txd);
list_add_tail(&last->node, &pch->work_list);
-
- tx->chan->cookie = cookie;
-
spin_unlock_irqrestore(&pch->lock, flags);
return cookie;