diff options
| -rw-r--r-- | drivers/dma/fsl-edma-common.c | 5 | ||||
| -rw-r--r-- | drivers/dma/fsl-edma-common.h | 1 | ||||
| -rw-r--r-- | drivers/dma/fsl-edma.c | 8 |
3 files changed, 14 insertions, 0 deletions
diff --git a/drivers/dma/fsl-edma-common.c b/drivers/dma/fsl-edma-common.c index b1a7ca91701a..5697c3622699 100644 --- a/drivers/dma/fsl-edma-common.c +++ b/drivers/dma/fsl-edma-common.c @@ -109,10 +109,15 @@ void fsl_edma_chan_mux(struct fsl_edma_chan *fsl_chan, u32 ch = fsl_chan->vchan.chan.chan_id; void __iomem *muxaddr; unsigned int chans_per_mux, ch_off; + int endian_diff[4] = {3, 1, -1, -3}; u32 dmamux_nr = fsl_chan->edma->drvdata->dmamuxs; chans_per_mux = fsl_chan->edma->n_chans / dmamux_nr; ch_off = fsl_chan->vchan.chan.chan_id % chans_per_mux; + + if (fsl_chan->edma->drvdata->mux_swap) + ch_off += endian_diff[ch_off % 4]; + muxaddr = fsl_chan->edma->muxbase[ch / chans_per_mux]; slot = EDMAMUX_CHCFG_SOURCE(slot); diff --git a/drivers/dma/fsl-edma-common.h b/drivers/dma/fsl-edma-common.h index 5eaa2902ed39..67e422590c9a 100644 --- a/drivers/dma/fsl-edma-common.h +++ b/drivers/dma/fsl-edma-common.h @@ -147,6 +147,7 @@ struct fsl_edma_drvdata { enum edma_version version; u32 dmamuxs; bool has_dmaclk; + bool mux_swap; int (*setup_irq)(struct platform_device *pdev, struct fsl_edma_engine *fsl_edma); }; diff --git a/drivers/dma/fsl-edma.c b/drivers/dma/fsl-edma.c index b626c06ac2e0..eff7ebd8cf35 100644 --- a/drivers/dma/fsl-edma.c +++ b/drivers/dma/fsl-edma.c @@ -233,6 +233,13 @@ static struct fsl_edma_drvdata vf610_data = { .setup_irq = fsl_edma_irq_init, }; +static struct fsl_edma_drvdata ls1028a_data = { + .version = v1, + .dmamuxs = DMAMUX_NR, + .mux_swap = true, + .setup_irq = fsl_edma_irq_init, +}; + static struct fsl_edma_drvdata imx7ulp_data = { .version = v3, .dmamuxs = 1, @@ -242,6 +249,7 @@ static struct fsl_edma_drvdata imx7ulp_data = { static const struct of_device_id fsl_edma_dt_ids[] = { { .compatible = "fsl,vf610-edma", .data = &vf610_data}, + { .compatible = "fsl,ls1028a-edma", .data = &ls1028a_data}, { .compatible = "fsl,imx7ulp-edma", .data = &imx7ulp_data}, { /* sentinel */ } }; |