[PATCH v1 3/6] dmaengine: fsl-edma-common: move dmamux register to another single function

[Robin Gong]

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

Signed-off-by: Robin Gong <yibin.g...@nxp.com>
---
 drivers/dma/fsl-edma-common.c | 18 ++++++++++++++----
 1 file changed, 14 insertions(+), 4 deletions(-)

diff --git a/drivers/dma/fsl-edma-common.c b/drivers/dma/fsl-edma-common.c
index c9a17fc..bb24251 100644
--- a/drivers/dma/fsl-edma-common.c
+++ b/drivers/dma/fsl-edma-common.c
@@ -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)
 {
@@ -89,10 +102,7 @@ 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);
 
-- 
2.7.4