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-rw-r--r--drivers/dma/ste_dma40.c37
1 files changed, 33 insertions, 4 deletions
diff --git a/drivers/dma/ste_dma40.c b/drivers/dma/ste_dma40.c
index 67e565bffe1..ff21dcbd820 100644
--- a/drivers/dma/ste_dma40.c
+++ b/drivers/dma/ste_dma40.c
@@ -382,6 +382,7 @@ struct d40_base;
* @client: Cliented owned descriptor list.
* @pending_queue: Submitted jobs, to be issued by issue_pending()
* @active: Active descriptor.
+ * @done: Completed jobs
* @queue: Queued jobs.
* @prepare_queue: Prepared jobs.
* @dma_cfg: The client configuration of this dma channel.
@@ -407,6 +408,7 @@ struct d40_chan {
struct list_head client;
struct list_head pending_queue;
struct list_head active;
+ struct list_head done;
struct list_head queue;
struct list_head prepare_queue;
struct stedma40_chan_cfg dma_cfg;
@@ -754,6 +756,11 @@ static void d40_phy_lli_load(struct d40_chan *chan, struct d40_desc *desc)
writel(lli_dst->reg_lnk, base + D40_CHAN_REG_SDLNK);
}
+static void d40_desc_done(struct d40_chan *d40c, struct d40_desc *desc)
+{
+ list_add_tail(&desc->node, &d40c->done);
+}
+
static void d40_log_lli_to_lcxa(struct d40_chan *chan, struct d40_desc *desc)
{
struct d40_lcla_pool *pool = &chan->base->lcla_pool;
@@ -914,6 +921,14 @@ static struct d40_desc *d40_first_queued(struct d40_chan *d40c)
return d;
}
+static struct d40_desc *d40_first_done(struct d40_chan *d40c)
+{
+ if (list_empty(&d40c->done))
+ return NULL;
+
+ return list_first_entry(&d40c->done, struct d40_desc, node);
+}
+
static int d40_psize_2_burst_size(bool is_log, int psize)
{
if (is_log) {
@@ -1104,6 +1119,12 @@ static void d40_term_all(struct d40_chan *d40c)
struct d40_desc *d40d;
struct d40_desc *_d;
+ /* Release completed descriptors */
+ while ((d40d = d40_first_done(d40c))) {
+ d40_desc_remove(d40d);
+ d40_desc_free(d40c, d40d);
+ }
+
/* Release active descriptors */
while ((d40d = d40_first_active_get(d40c))) {
d40_desc_remove(d40d);
@@ -1541,6 +1562,9 @@ static void dma_tc_handle(struct d40_chan *d40c)
pm_runtime_put_autosuspend(d40c->base->dev);
}
+ d40_desc_remove(d40d);
+ d40_desc_done(d40c, d40d);
+
d40c->pending_tx++;
tasklet_schedule(&d40c->tasklet);
@@ -1556,10 +1580,14 @@ static void dma_tasklet(unsigned long data)
spin_lock_irqsave(&d40c->lock, flags);
- /* Get first active entry from list */
- d40d = d40_first_active_get(d40c);
- if (d40d == NULL)
- goto err;
+ /* Get first entry from the done list */
+ d40d = d40_first_done(d40c);
+ if (d40d == NULL) {
+ /* Check if we have reached here for cyclic job */
+ d40d = d40_first_active_get(d40c);
+ if (d40d == NULL || !d40d->cyclic)
+ goto err;
+ }
if (!d40d->cyclic)
dma_cookie_complete(&d40d->txd);
@@ -2823,6 +2851,7 @@ static void __init d40_chan_init(struct d40_base *base, struct dma_device *dma,
d40c->log_num = D40_PHY_CHAN;
+ INIT_LIST_HEAD(&d40c->done);
INIT_LIST_HEAD(&d40c->active);
INIT_LIST_HEAD(&d40c->queue);
INIT_LIST_HEAD(&d40c->pending_queue);