diff options
Diffstat (limited to 'drivers/dma')
| -rw-r--r-- | drivers/dma/mxs-dma.c | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/drivers/dma/mxs-dma.c b/drivers/dma/mxs-dma.c index c622bee7eb12..20a9cb7cb6d3 100644 --- a/drivers/dma/mxs-dma.c +++ b/drivers/dma/mxs-dma.c @@ -78,6 +78,7 @@ #define BM_CCW_COMMAND (3 << 0) #define CCW_CHAIN (1 << 2) #define CCW_IRQ (1 << 3) +#define CCW_WAIT4RDY (1 << 5) #define CCW_DEC_SEM (1 << 6) #define CCW_WAIT4END (1 << 7) #define CCW_HALT_ON_TERM (1 << 8) @@ -547,6 +548,8 @@ static struct dma_async_tx_descriptor *mxs_dma_prep_slave_sg( ccw->bits |= CCW_TERM_FLUSH; ccw->bits |= BF_CCW(sg_len, PIO_NUM); ccw->bits |= BF_CCW(MXS_DMA_CMD_NO_XFER, COMMAND); + if (flags & MXS_DMA_CTRL_WAIT4RDY) + ccw->bits |= CCW_WAIT4RDY; } else { for_each_sg(sgl, sg, sg_len, i) { if (sg_dma_len(sg) > MAX_XFER_BYTES) { |