diff options
Diffstat (limited to 'drivers/dma/dw_dmac.c')
| -rw-r--r-- | drivers/dma/dw_dmac.c | 12 |
1 files changed, 10 insertions, 2 deletions
diff --git a/drivers/dma/dw_dmac.c b/drivers/dma/dw_dmac.c index e554027849b7..a2c5a60bc2e2 100644 --- a/drivers/dma/dw_dmac.c +++ b/drivers/dma/dw_dmac.c @@ -178,9 +178,9 @@ static void dwc_initialize(struct dw_dma_chan *dwc) cfghi = dws->cfg_hi; cfglo |= dws->cfg_lo & ~DWC_CFGL_CH_PRIOR_MASK; } else { - if (dwc->dma_sconfig.direction == DMA_MEM_TO_DEV) + if (dwc->direction == DMA_MEM_TO_DEV) cfghi = DWC_CFGH_DST_PER(dwc->dma_sconfig.slave_id); - else if (dwc->dma_sconfig.direction == DMA_DEV_TO_MEM) + else if (dwc->direction == DMA_DEV_TO_MEM) cfghi = DWC_CFGH_SRC_PER(dwc->dma_sconfig.slave_id); } @@ -721,6 +721,8 @@ dwc_prep_dma_memcpy(struct dma_chan *chan, dma_addr_t dest, dma_addr_t src, return NULL; } + dwc->direction = DMA_MEM_TO_MEM; + data_width = min_t(unsigned int, dwc->dw->data_width[dwc_get_sms(dws)], dwc->dw->data_width[dwc_get_dms(dws)]); @@ -805,6 +807,8 @@ dwc_prep_slave_sg(struct dma_chan *chan, struct scatterlist *sgl, if (unlikely(!dws || !sg_len)) return NULL; + dwc->direction = direction; + prev = first = NULL; switch (direction) { @@ -981,6 +985,7 @@ set_runtime_config(struct dma_chan *chan, struct dma_slave_config *sconfig) return -EINVAL; memcpy(&dwc->dma_sconfig, sconfig, sizeof(*sconfig)); + dwc->direction = sconfig->direction; convert_burst(&dwc->dma_sconfig.src_maxburst); convert_burst(&dwc->dma_sconfig.dst_maxburst); @@ -1358,6 +1363,8 @@ struct dw_cyclic_desc *dw_dma_cyclic_prep(struct dma_chan *chan, if (unlikely(!is_slave_direction(direction))) goto out_err; + dwc->direction = direction; + if (direction == DMA_MEM_TO_DEV) reg_width = __ffs(sconfig->dst_addr_width); else @@ -1732,6 +1739,7 @@ static int dw_probe(struct platform_device *pdev) channel_clear_bit(dw, CH_EN, dwc->mask); dwc->dw = dw; + dwc->direction = DMA_TRANS_NONE; /* hardware configuration */ if (autocfg) { |