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43 lines
1.4 KiB
Diff
43 lines
1.4 KiB
Diff
From dcb4deb92738a2fd3981550dbf18ae96e22bbe80 Mon Sep 17 00:00:00 2001
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From: Robin Gong <yibin.gong@nxp.com>
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Date: Wed, 23 Oct 2019 00:33:42 +0800
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Subject: [PATCH] MLK-22798-1: dmaengine: fsl-edma-v3: do not enable interrupt
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in dev_2_dev
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Do not enable interrupt in dev_2_dev with cyclic case, since in such
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case no any interrupt needed. Otherwise many interrupt will come in
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every 64 words transfered in ASRC case, which cause heavy system
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loading.
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Signed-off-by: Robin Gong <yibin.gong@nxp.com>
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Reviewed-by: Shengjiu Wang <shengjiu.wang@nxp.com>
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(cherry picked from commit f0a3172e1ceb04c46377160486ad7dc6ee022850)
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---
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drivers/dma/fsl-edma-v3.c | 4 +++-
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1 file changed, 3 insertions(+), 1 deletion(-)
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--- a/drivers/dma/fsl-edma-v3.c
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+++ b/drivers/dma/fsl-edma-v3.c
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@@ -560,6 +560,7 @@ static struct dma_async_tx_descriptor *f
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int sg_len, i;
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u32 src_addr, dst_addr, last_sg, nbytes;
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u16 soff, doff, iter;
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+ bool major_int = true;
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sg_len = buf_len / period_len;
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fsl_desc = fsl_edma3_alloc_desc(fsl_chan, sg_len);
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@@ -600,11 +601,12 @@ static struct dma_async_tx_descriptor *f
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dst_addr = fsl_chan->fsc.dev_addr;
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soff = 0;
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doff = 0;
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+ major_int = false;
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}
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fsl_edma3_fill_tcd(fsl_chan, fsl_desc->tcd[i].vtcd, src_addr,
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dst_addr, fsl_chan->fsc.attr, soff, nbytes, 0,
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- iter, iter, doff, last_sg, true, false, true);
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+ iter, iter, doff, last_sg, major_int, false, true);
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dma_buf_next += period_len;
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}
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