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dmaengine: fsl-edma-common: move dmamux register to another single function

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Prepare for edmav2 on i.mx7ulp whose dmamux register is 32bit. No function
impacted.

Signed-off-by: Robin Gong <yibin.gong@nxp.com>
Tested-by: Angelo Dureghello <angelo@sysam.it>
Signed-off-by: Vinod Koul <vkoul@kernel.org>
This commit is contained in:
Robin Gong 2019-06-25 17:43:20 +08:00 committed by Vinod Koul
parent af802728e4
commit 78690bf3c4
1 changed files with 14 additions and 4 deletions
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18
drivers/dma/fsl-edma-common.c
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@ -77,6 +77,19 @@ void fsl_edma_disable_request(struct fsl_edma_chan *fsl_chan)
}
EXPORT_SYMBOL_GPL(fsl_edma_disable_request);
static void mux_configure8(struct fsl_edma_chan *fsl_chan, void __iomem *addr,
u32 off, u32 slot, bool enable)
{
u8 val8;
if (enable)
val8 = EDMAMUX_CHCFG_ENBL | slot;
else
val8 = EDMAMUX_CHCFG_DIS;
iowrite8(val8, addr + off);
}
void fsl_edma_chan_mux(struct fsl_edma_chan *fsl_chan,
unsigned int slot, bool enable)
{
@ -90,10 +103,7 @@ void fsl_edma_chan_mux(struct fsl_edma_chan *fsl_chan,
muxaddr = fsl_chan->edma->muxbase[ch / chans_per_mux];
slot = EDMAMUX_CHCFG_SOURCE(slot);
if (enable)
iowrite8(EDMAMUX_CHCFG_ENBL | slot, muxaddr + ch_off);
else
iowrite8(EDMAMUX_CHCFG_DIS, muxaddr + ch_off);
mux_configure8(fsl_chan, muxaddr, ch_off, slot, enable);
}
EXPORT_SYMBOL_GPL(fsl_edma_chan_mux);