diff options
Diffstat (limited to 'drivers/dma/fsl-edma-common.c')
| -rw-r--r-- | drivers/dma/fsl-edma-common.c | 26 |
1 files changed, 26 insertions, 0 deletions
diff --git a/drivers/dma/fsl-edma-common.c b/drivers/dma/fsl-edma-common.c index 5800747b8fb3..2b91863502d4 100644 --- a/drivers/dma/fsl-edma-common.c +++ b/drivers/dma/fsl-edma-common.c @@ -42,6 +42,32 @@ #define EDMA_TCD 0x1000 +void fsl_edma_tx_chan_handler(struct fsl_edma_chan *fsl_chan) +{ + spin_lock(&fsl_chan->vchan.lock); + + if (!fsl_chan->edesc) { + /* terminate_all called before */ + spin_unlock(&fsl_chan->vchan.lock); + return; + } + + if (!fsl_chan->edesc->iscyclic) { + list_del(&fsl_chan->edesc->vdesc.node); + vchan_cookie_complete(&fsl_chan->edesc->vdesc); + fsl_chan->edesc = NULL; + fsl_chan->status = DMA_COMPLETE; + fsl_chan->idle = true; + } else { + vchan_cyclic_callback(&fsl_chan->edesc->vdesc); + } + + if (!fsl_chan->edesc) + fsl_edma_xfer_desc(fsl_chan); + + spin_unlock(&fsl_chan->vchan.lock); +} + static void fsl_edma_enable_request(struct fsl_edma_chan *fsl_chan) { struct edma_regs *regs = &fsl_chan->edma->regs; |