diff options
Diffstat (limited to 'drivers/dma/at_hdmac.c')
-rw-r--r-- | drivers/dma/at_hdmac.c | 35 |
1 files changed, 19 insertions, 16 deletions
diff --git a/drivers/dma/at_hdmac.c b/drivers/dma/at_hdmac.c index 278cf5bceef2..bd5250e8c00c 100644 --- a/drivers/dma/at_hdmac.c +++ b/drivers/dma/at_hdmac.c | |||
@@ -760,13 +760,18 @@ err_desc_get: | |||
760 | return NULL; | 760 | return NULL; |
761 | } | 761 | } |
762 | 762 | ||
763 | static void atc_terminate_all(struct dma_chan *chan) | 763 | static int atc_control(struct dma_chan *chan, enum dma_ctrl_cmd cmd, |
764 | unsigned long arg) | ||
764 | { | 765 | { |
765 | struct at_dma_chan *atchan = to_at_dma_chan(chan); | 766 | struct at_dma_chan *atchan = to_at_dma_chan(chan); |
766 | struct at_dma *atdma = to_at_dma(chan->device); | 767 | struct at_dma *atdma = to_at_dma(chan->device); |
767 | struct at_desc *desc, *_desc; | 768 | struct at_desc *desc, *_desc; |
768 | LIST_HEAD(list); | 769 | LIST_HEAD(list); |
769 | 770 | ||
771 | /* Only supports DMA_TERMINATE_ALL */ | ||
772 | if (cmd != DMA_TERMINATE_ALL) | ||
773 | return -ENXIO; | ||
774 | |||
770 | /* | 775 | /* |
771 | * This is only called when something went wrong elsewhere, so | 776 | * This is only called when something went wrong elsewhere, so |
772 | * we don't really care about the data. Just disable the | 777 | * we don't really care about the data. Just disable the |
@@ -790,32 +795,30 @@ static void atc_terminate_all(struct dma_chan *chan) | |||
790 | /* Flush all pending and queued descriptors */ | 795 | /* Flush all pending and queued descriptors */ |
791 | list_for_each_entry_safe(desc, _desc, &list, desc_node) | 796 | list_for_each_entry_safe(desc, _desc, &list, desc_node) |
792 | atc_chain_complete(atchan, desc); | 797 | atc_chain_complete(atchan, desc); |
798 | |||
799 | return 0; | ||
793 | } | 800 | } |
794 | 801 | ||
795 | /** | 802 | /** |
796 | * atc_is_tx_complete - poll for transaction completion | 803 | * atc_tx_status - poll for transaction completion |
797 | * @chan: DMA channel | 804 | * @chan: DMA channel |
798 | * @cookie: transaction identifier to check status of | 805 | * @cookie: transaction identifier to check status of |
799 | * @done: if not %NULL, updated with last completed transaction | 806 | * @txstate: if not %NULL updated with transaction state |
800 | * @used: if not %NULL, updated with last used transaction | ||
801 | * | 807 | * |
802 | * If @done and @used are passed in, upon return they reflect the driver | 808 | * If @txstate is passed in, upon return it reflect the driver |
803 | * internal state and can be used with dma_async_is_complete() to check | 809 | * internal state and can be used with dma_async_is_complete() to check |
804 | * the status of multiple cookies without re-checking hardware state. | 810 | * the status of multiple cookies without re-checking hardware state. |
805 | */ | 811 | */ |
806 | static enum dma_status | 812 | static enum dma_status |
807 | atc_is_tx_complete(struct dma_chan *chan, | 813 | atc_tx_status(struct dma_chan *chan, |
808 | dma_cookie_t cookie, | 814 | dma_cookie_t cookie, |
809 | dma_cookie_t *done, dma_cookie_t *used) | 815 | struct dma_tx_state *txstate) |
810 | { | 816 | { |
811 | struct at_dma_chan *atchan = to_at_dma_chan(chan); | 817 | struct at_dma_chan *atchan = to_at_dma_chan(chan); |
812 | dma_cookie_t last_used; | 818 | dma_cookie_t last_used; |
813 | dma_cookie_t last_complete; | 819 | dma_cookie_t last_complete; |
814 | enum dma_status ret; | 820 | enum dma_status ret; |
815 | 821 | ||
816 | dev_vdbg(chan2dev(chan), "is_tx_complete: %d (d%d, u%d)\n", | ||
817 | cookie, done ? *done : 0, used ? *used : 0); | ||
818 | |||
819 | spin_lock_bh(&atchan->lock); | 822 | spin_lock_bh(&atchan->lock); |
820 | 823 | ||
821 | last_complete = atchan->completed_cookie; | 824 | last_complete = atchan->completed_cookie; |
@@ -833,10 +836,10 @@ atc_is_tx_complete(struct dma_chan *chan, | |||
833 | 836 | ||
834 | spin_unlock_bh(&atchan->lock); | 837 | spin_unlock_bh(&atchan->lock); |
835 | 838 | ||
836 | if (done) | 839 | dma_set_tx_state(txstate, last_complete, last_used, 0); |
837 | *done = last_complete; | 840 | dev_vdbg(chan2dev(chan), "tx_status: %d (d%d, u%d)\n", |
838 | if (used) | 841 | cookie, last_complete ? last_complete : 0, |
839 | *used = last_used; | 842 | last_used ? last_used : 0); |
840 | 843 | ||
841 | return ret; | 844 | return ret; |
842 | } | 845 | } |
@@ -1082,7 +1085,7 @@ static int __init at_dma_probe(struct platform_device *pdev) | |||
1082 | /* set base routines */ | 1085 | /* set base routines */ |
1083 | atdma->dma_common.device_alloc_chan_resources = atc_alloc_chan_resources; | 1086 | atdma->dma_common.device_alloc_chan_resources = atc_alloc_chan_resources; |
1084 | atdma->dma_common.device_free_chan_resources = atc_free_chan_resources; | 1087 | atdma->dma_common.device_free_chan_resources = atc_free_chan_resources; |
1085 | atdma->dma_common.device_is_tx_complete = atc_is_tx_complete; | 1088 | atdma->dma_common.device_tx_status = atc_tx_status; |
1086 | atdma->dma_common.device_issue_pending = atc_issue_pending; | 1089 | atdma->dma_common.device_issue_pending = atc_issue_pending; |
1087 | atdma->dma_common.dev = &pdev->dev; | 1090 | atdma->dma_common.dev = &pdev->dev; |
1088 | 1091 | ||
@@ -1092,7 +1095,7 @@ static int __init at_dma_probe(struct platform_device *pdev) | |||
1092 | 1095 | ||
1093 | if (dma_has_cap(DMA_SLAVE, atdma->dma_common.cap_mask)) { | 1096 | if (dma_has_cap(DMA_SLAVE, atdma->dma_common.cap_mask)) { |
1094 | atdma->dma_common.device_prep_slave_sg = atc_prep_slave_sg; | 1097 | atdma->dma_common.device_prep_slave_sg = atc_prep_slave_sg; |
1095 | atdma->dma_common.device_terminate_all = atc_terminate_all; | 1098 | atdma->dma_common.device_control = atc_control; |
1096 | } | 1099 | } |
1097 | 1100 | ||
1098 | dma_writel(atdma, EN, AT_DMA_ENABLE); | 1101 | dma_writel(atdma, EN, AT_DMA_ENABLE); |