diff --git a/arch/arm/common/edma.c b/arch/arm/common/edma.c index 03692520812a..5b747f1bc8b5 100644 --- a/arch/arm/common/edma.c +++ b/arch/arm/common/edma.c @@ -1227,24 +1227,7 @@ static int edma_probe(struct platform_device *pdev) .parent = &pdev->dev, }; - /* When booting with DT the pdev->id is -1 */ - if (dev_id < 0) - dev_id = arch_num_cc; - - if (dev_id >= EDMA_MAX_CC) { - dev_err(dev, - "eDMA3 with device id 0 and 1 is supported (id: %d)\n", - dev_id); - return -EINVAL; - } - if (node) { - /* Check if this is a second instance registered */ - if (arch_num_cc) { - dev_err(dev, "only one EDMA instance is supported via DT\n"); - return -ENODEV; - } - info = edma_setup_info_from_dt(dev, node); if (IS_ERR(info)) { dev_err(dev, "failed to get DT data\n"); @@ -1278,6 +1261,11 @@ static int edma_probe(struct platform_device *pdev) cc->dev = dev; cc->id = dev_id; + /* When booting with DT the pdev->id is -1 */ + if (dev_id < 0) { + cc->id = 0; + dev_id = arch_num_cc; + } dev_set_drvdata(dev, cc); cc->base = devm_ioremap_resource(dev, mem); diff --git a/drivers/dma/edma.c b/drivers/dma/edma.c index 53d48b2a700d..fc91ab9dd1bb 100644 --- a/drivers/dma/edma.c +++ b/drivers/dma/edma.c @@ -991,14 +991,12 @@ static void edma_dma_init(struct edma_cc *ecc, struct dma_device *dma, INIT_LIST_HEAD(&dma->channels); } -static struct of_dma_filter_info edma_filter_info = { - .filter_fn = edma_filter_fn, -}; - static int edma_probe(struct platform_device *pdev) { struct edma_cc *ecc; struct device_node *parent_node = pdev->dev.parent->of_node; + struct platform_device *parent_pdev = + to_platform_device(pdev->dev.parent); int ret; ret = dma_set_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(32)); @@ -1015,7 +1013,10 @@ static int edma_probe(struct platform_device *pdev) if (!ecc->cc) return -ENODEV; - ecc->ctlr = pdev->id; + ecc->ctlr = parent_pdev->id; + if (ecc->ctlr < 0) + ecc->ctlr = 0; + ecc->dummy_slot = edma_alloc_slot(ecc->cc, EDMA_SLOT_ANY); if (ecc->dummy_slot < 0) { dev_err(&pdev->dev, "Can't allocate PaRAM dummy slot\n"); @@ -1038,10 +1039,8 @@ static int edma_probe(struct platform_device *pdev) platform_set_drvdata(pdev, ecc); if (parent_node) { - dma_cap_set(DMA_SLAVE, edma_filter_info.dma_cap); - dma_cap_set(DMA_CYCLIC, edma_filter_info.dma_cap); - of_dma_controller_register(parent_node, of_dma_simple_xlate, - &edma_filter_info); + of_dma_controller_register(parent_node, of_dma_xlate_by_chan_id, + &ecc->dma_slave); } dev_info(&pdev->dev, "TI EDMA DMA engine driver\n");