From 78690bf3c4a4dea4c17f86c7ad385b5e9f5cf58b Mon Sep 17 00:00:00 2001 From: Robin Gong Date: Tue, 25 Jun 2019 17:43:20 +0800 Subject: dmaengine: fsl-edma-common: move dmamux register to another single function Prepare for edmav2 on i.mx7ulp whose dmamux register is 32bit. No function impacted. Signed-off-by: Robin Gong Tested-by: Angelo Dureghello Signed-off-by: Vinod Koul --- drivers/dma/fsl-edma-common.c | 18 ++++++++++++++---- 1 file changed, 14 insertions(+), 4 deletions(-) (limited to 'drivers/dma') diff --git a/drivers/dma/fsl-edma-common.c b/drivers/dma/fsl-edma-common.c index 07d96894c7c4..ba74e10aa0c2 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) { @@ -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); -- cgit v1.2.3-55-g7522