diff options
Diffstat (limited to 'target/linux/layerscape/patches-5.4/806-dma-0028-dmaengine-fsl-edma-Add-eDMA-support-for-QorIQ-LS1028.patch')
-rw-r--r-- | target/linux/layerscape/patches-5.4/806-dma-0028-dmaengine-fsl-edma-Add-eDMA-support-for-QorIQ-LS1028.patch | 94 |
1 files changed, 94 insertions, 0 deletions
diff --git a/target/linux/layerscape/patches-5.4/806-dma-0028-dmaengine-fsl-edma-Add-eDMA-support-for-QorIQ-LS1028.patch b/target/linux/layerscape/patches-5.4/806-dma-0028-dmaengine-fsl-edma-Add-eDMA-support-for-QorIQ-LS1028.patch new file mode 100644 index 0000000000..611f96b1a8 --- /dev/null +++ b/target/linux/layerscape/patches-5.4/806-dma-0028-dmaengine-fsl-edma-Add-eDMA-support-for-QorIQ-LS1028.patch @@ -0,0 +1,94 @@ +From 83d2cb1c64c5a34f23b34fcee715a68be230c232 Mon Sep 17 00:00:00 2001 +From: Peng Ma <peng.ma@nxp.com> +Date: Thu, 12 Dec 2019 03:38:10 +0000 +Subject: [PATCH] dmaengine: fsl-edma: Add eDMA support for QorIQ LS1028A + platform + +Our platforms(such as LS1021A, LS1012A, LS1043A, LS1046A, LS1028A) with +below registers(CHCFG0 - CHCFG15) of eDMA as follows: +*-----------------------------------------------------------* +| Offset | OTHERS | LS1028A | +|--------------|--------------------|-----------------------| +| 0x0 | CHCFG0 | CHCFG3 | +|--------------|--------------------|-----------------------| +| 0x1 | CHCFG1 | CHCFG2 | +|--------------|--------------------|-----------------------| +| 0x2 | CHCFG2 | CHCFG1 | +|--------------|--------------------|-----------------------| +| 0x3 | CHCFG3 | CHCFG0 | +|--------------|--------------------|-----------------------| +| ... | ...... | ...... | +|--------------|--------------------|-----------------------| +| 0xC | CHCFG12 | CHCFG15 | +|--------------|--------------------|-----------------------| +| 0xD | CHCFG13 | CHCFG14 | +|--------------|--------------------|-----------------------| +| 0xE | CHCFG14 | CHCFG13 | +|--------------|--------------------|-----------------------| +| 0xF | CHCFG15 | CHCFG12 | +*-----------------------------------------------------------* + +This patch is to improve edma driver to fit LS1028A platform. + +Signed-off-by: Peng Ma <peng.ma@nxp.com> +Reviewed-by: Robin Gong <yibin.gong@nxp.com> +Link: https://lore.kernel.org/r/20191212033714.4090-1-peng.ma@nxp.com +Signed-off-by: Vinod Koul <vkoul@kernel.org> +--- + drivers/dma/fsl-edma-common.c | 5 +++++ + drivers/dma/fsl-edma-common.h | 1 + + drivers/dma/fsl-edma.c | 8 ++++++++ + 3 files changed, 14 insertions(+) + +--- 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_c + 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); + +--- a/drivers/dma/fsl-edma-common.h ++++ b/drivers/dma/fsl-edma-common.h +@@ -148,6 +148,7 @@ 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); + }; +--- a/drivers/dma/fsl-edma.c ++++ b/drivers/dma/fsl-edma.c +@@ -234,6 +234,13 @@ static struct fsl_edma_drvdata vf610_dat + .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, +@@ -243,6 +250,7 @@ static struct fsl_edma_drvdata imx7ulp_d + + 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 */ } + }; |