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    Subject[PATCH v3 3/8] dmaengine: fsl-edma-common: move dmamux register to another single function
    Date
    From: Robin Gong <yibin.gong@nxp.com>

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

    Signed-off-by: Robin Gong <yibin.gong@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
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