DMAENGINE: generic slave control v2

[deliverable/linux.git] / drivers / dma / dw_dmac.c

diff --git a/drivers/dma/dw_dmac.c b/drivers/dma/dw_dmac.c
index d28369f7afd2ba8a2da690b235c0318a89719a82..8a6b85f61176dd457a9ff549ef1c1be71b2a88af 100644 (file)
--- a/drivers/dma/dw_dmac.c
+++ b/drivers/dma/dw_dmac.c
@@ -781,13 +781,17 @@ err_desc_get:
        return NULL;
 }
 
-static void dwc_terminate_all(struct dma_chan *chan)
+static int dwc_control(struct dma_chan *chan, enum dma_ctrl_cmd cmd)
 {
        struct dw_dma_chan      *dwc = to_dw_dma_chan(chan);
        struct dw_dma           *dw = to_dw_dma(chan->device);
        struct dw_desc          *desc, *_desc;
        LIST_HEAD(list);
 
+       /* Only supports DMA_TERMINATE_ALL */
+       if (cmd != DMA_TERMINATE_ALL)
+               return -ENXIO;
+
        /*
         * This is only called when something went wrong elsewhere, so
         * we don't really care about the data. Just disable the
@@ -810,6 +814,8 @@ static void dwc_terminate_all(struct dma_chan *chan)
        /* Flush all pending and queued descriptors */
        list_for_each_entry_safe(desc, _desc, &list, desc_node)
                dwc_descriptor_complete(dwc, desc);
+
+       return 0;
 }
 
 static enum dma_status
@@ -1338,7 +1344,7 @@ static int __init dw_probe(struct platform_device *pdev)
        dw->dma.device_prep_dma_memcpy = dwc_prep_dma_memcpy;
 
        dw->dma.device_prep_slave_sg = dwc_prep_slave_sg;
-       dw->dma.device_terminate_all = dwc_terminate_all;
+       dw->dma.device_control = dwc_control;
 
        dw->dma.device_is_tx_complete = dwc_is_tx_complete;
        dw->dma.device_issue_pending = dwc_issue_pending;