You cannot select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
54 lines
1.6 KiB
Diff
54 lines
1.6 KiB
Diff
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;
|
|
}
|