diff options
| author | Robin Gong <yibin.gong@nxp.com> | 2019-07-24 15:20:34 +0800 |
|---|---|---|
| committer | Vinod Koul <vkoul@kernel.org> | 2019-08-08 17:54:36 +0530 |
| commit | 232a7f18cf8ecbd92a8cc6ca7feee4f6aab668fe (patch) | |
| tree | a32d24f6601db86b1e85d8cdef173a7dd4705275 /drivers/dma/fsl-edma-common.c | |
| parent | 719e25dba4430a7f2b1e77fa962f0527ebc9371d (diff) | |
| download | linux-232a7f18cf8ecbd92a8cc6ca7feee4f6aab668fe.tar.gz | |
dmaengine: fsl-edma: add i.mx7ulp edma2 version support
Add edma2 for i.mx7ulp by version v3, since v2 has already
been used by mcf-edma.
The big changes based on v1 are belows:
1. only one dmamux.
2. another clock dma_clk except dmamux clk.
3. 16 independent interrupts instead of only one interrupt for
all channels.
Signed-off-by: Robin Gong <yibin.gong@nxp.com>
Link: https://lore.kernel.org/r/1563952834-7731-1-git-send-email-yibin.gong@nxp.com
Signed-off-by: Vinod Koul <vkoul@kernel.org>
Diffstat (limited to 'drivers/dma/fsl-edma-common.c')
| -rw-r--r-- | drivers/dma/fsl-edma-common.c | 18 |
1 files changed, 17 insertions, 1 deletions
diff --git a/drivers/dma/fsl-edma-common.c b/drivers/dma/fsl-edma-common.c index 44d92c34dec3..6d6d8a4e8e38 100644 --- a/drivers/dma/fsl-edma-common.c +++ b/drivers/dma/fsl-edma-common.c @@ -90,6 +90,19 @@ static void mux_configure8(struct fsl_edma_chan *fsl_chan, void __iomem *addr, iowrite8(val8, addr + off); } +void mux_configure32(struct fsl_edma_chan *fsl_chan, void __iomem *addr, + u32 off, u32 slot, bool enable) +{ + u32 val; + + if (enable) + val = EDMAMUX_CHCFG_ENBL << 24 | slot; + else + val = EDMAMUX_CHCFG_DIS; + + iowrite32(val, addr + off * 4); +} + void fsl_edma_chan_mux(struct fsl_edma_chan *fsl_chan, unsigned int slot, bool enable) { @@ -103,7 +116,10 @@ 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); - mux_configure8(fsl_chan, muxaddr, ch_off, slot, enable); + if (fsl_chan->edma->drvdata->version == v3) + mux_configure32(fsl_chan, muxaddr, ch_off, slot, enable); + else + mux_configure8(fsl_chan, muxaddr, ch_off, slot, enable); } EXPORT_SYMBOL_GPL(fsl_edma_chan_mux); |