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| author |   Robin Gong <yibin.gong@nxp.com> | 2019-06-25 17:43:20 +0800 |
|---|---|---|
| committer |   Vinod Koul <vkoul@kernel.org> | 2019-07-03 13:28:23 +0530 |
| commit | 78690bf3c4a4dea4c17f86c7ad385b5e9f5cf58b (patch) | |
| tree | 606b99e146df4e6339c235f49548a36d071b6b33 /drivers/dma | |
| parent | dmaengine: fsl-edma: add drvdata for fsl-edma (diff) | |
| download | linux-dev-78690bf3c4a4dea4c17f86c7ad385b5e9f5cf58b.tar.xz linux-dev-78690bf3c4a4dea4c17f86c7ad385b5e9f5cf58b.zip | |
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 <yibin.gong@nxp.com>
Tested-by: Angelo Dureghello <angelo@sysam.it>
Signed-off-by: Vinod Koul <vkoul@kernel.org>
Diffstat (limited to 'drivers/dma')
| -rw-r--r-- | drivers/dma/fsl-edma-common.c | 18 |
1 files changed, 14 insertions, 4 deletions
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); |