diff options
Diffstat (limited to 'target/linux/layerscape/patches-5.4/806-dma-0004-MLK-15003-1-DMA-fsl-edma-v3-add-one-more-parameter-f.patch')
| -rw-r--r-- | target/linux/layerscape/patches-5.4/806-dma-0004-MLK-15003-1-DMA-fsl-edma-v3-add-one-more-parameter-f.patch | 53 |
1 files changed, 53 insertions, 0 deletions
diff --git a/target/linux/layerscape/patches-5.4/806-dma-0004-MLK-15003-1-DMA-fsl-edma-v3-add-one-more-parameter-f.patch b/target/linux/layerscape/patches-5.4/806-dma-0004-MLK-15003-1-DMA-fsl-edma-v3-add-one-more-parameter-f.patch new file mode 100644 index 0000000000..1af6c7e79d --- /dev/null +++ b/target/linux/layerscape/patches-5.4/806-dma-0004-MLK-15003-1-DMA-fsl-edma-v3-add-one-more-parameter-f.patch @@ -0,0 +1,53 @@ +From f8692ecd13a787c51eca9234312f5f3fd163a04a Mon Sep 17 00:00:00 2001 +From: Shengjiu Wang <shengjiu.wang@freescale.com> +Date: Mon, 5 Jun 2017 11:05:52 +0800 +Subject: [PATCH] MLK-15003-1: DMA: fsl-edma-v3: add one more parameter for + xlate + +The parameter is "is_remote", which is to use remote access for +edma, the default access is local access. + +Signed-off-by: Shengjiu Wang <shengjiu.wang@freescale.com> +(cherry picked from commit eee976b30b0523680f30e762742984f5b5a01b97) +--- + drivers/dma/fsl-edma-v3.c | 8 +++++++- + 1 file changed, 7 insertions(+), 1 deletion(-) + +--- a/drivers/dma/fsl-edma-v3.c ++++ b/drivers/dma/fsl-edma-v3.c +@@ -139,6 +139,7 @@ struct fsl_edma3_chan { + int hw_chanid; + int priority; + int is_rxchan; ++ int is_remote; + struct dma_pool *tcd_pool; + u32 chn_real_count; + char txirq_name[32]; +@@ -189,6 +190,10 @@ static void fsl_edma3_enable_request(str + else + val |= EDMA_CH_SBR_WR; + } ++ ++ if (fsl_chan->is_remote) ++ val &= ~(EDMA_CH_SBR_RD | EDMA_CH_SBR_WR); ++ + writel(val, addr + EDMA_CH_SBR); + + val = readl(addr + EDMA_CH_CSR); +@@ -686,7 +691,7 @@ static struct dma_chan *fsl_edma3_xlate( + struct dma_chan *chan, *_chan; + struct fsl_edma3_chan *fsl_chan; + +- if (dma_spec->args_count != 3) ++ if (dma_spec->args_count != 4) + return NULL; + + mutex_lock(&fsl_edma3->fsl_edma3_mutex); +@@ -701,6 +706,7 @@ static struct dma_chan *fsl_edma3_xlate( + chan->device->privatecnt++; + fsl_chan->priority = dma_spec->args[1]; + fsl_chan->is_rxchan = dma_spec->args[2]; ++ fsl_chan->is_remote = dma_spec->args[3]; + mutex_unlock(&fsl_edma3->fsl_edma3_mutex); + return chan; + } |