diff options
| -rw-r--r-- | drivers/dma/ste_dma40.c | 37 |
1 files changed, 33 insertions, 4 deletions
diff --git a/drivers/dma/ste_dma40.c b/drivers/dma/ste_dma40.c index 67e565b..ff21dcb 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); |
