diff options
Diffstat (limited to 'drivers/dma/coh901318.c')
| -rw-r--r-- | drivers/dma/coh901318.c | 20 |
1 files changed, 13 insertions, 7 deletions
diff --git a/drivers/dma/coh901318.c b/drivers/dma/coh901318.c index af8c0b5..4234f41 100644 --- a/drivers/dma/coh901318.c +++ b/drivers/dma/coh901318.c @@ -11,6 +11,7 @@ #include <linux/module.h> #include <linux/kernel.h> /* printk() */ #include <linux/fs.h> /* everything... */ +#include <linux/scatterlist.h> #include <linux/slab.h> /* kmalloc() */ #include <linux/dmaengine.h> #include <linux/platform_device.h> @@ -40,6 +41,8 @@ struct coh901318_desc { struct coh901318_lli *lli; enum dma_data_direction dir; unsigned long flags; + u32 head_config; + u32 head_ctrl; }; struct coh901318_base { @@ -660,6 +663,9 @@ static struct coh901318_desc *coh901318_queue_start(struct coh901318_chan *cohc) coh901318_desc_submit(cohc, cohd); + /* Program the transaction head */ + coh901318_set_conf(cohc, cohd->head_config); + coh901318_set_ctrl(cohc, cohd->head_ctrl); coh901318_prep_linked_list(cohc, cohd->lli); /* start dma job on this channel */ @@ -1090,8 +1096,6 @@ coh901318_prep_slave_sg(struct dma_chan *chan, struct scatterlist *sgl, } else goto err_direction; - coh901318_set_conf(cohc, config); - /* The dma only supports transmitting packages up to * MAX_DMA_PACKET_SIZE. Calculate to total number of * dma elemts required to send the entire sg list @@ -1128,16 +1132,18 @@ coh901318_prep_slave_sg(struct dma_chan *chan, struct scatterlist *sgl, if (ret) goto err_lli_fill; - /* - * Set the default ctrl for the channel to the one from the lli, - * things may have changed due to odd buffer alignment etc. - */ - coh901318_set_ctrl(cohc, lli->control); COH_DBG(coh901318_list_print(cohc, lli)); /* Pick a descriptor to handle this transfer */ cohd = coh901318_desc_get(cohc); + cohd->head_config = config; + /* + * Set the default head ctrl for the channel to the one from the + * lli, things may have changed due to odd buffer alignment + * etc. + */ + cohd->head_ctrl = lli->control; cohd->dir = direction; cohd->flags = flags; cohd->desc.tx_submit = coh901318_tx_submit; |