diff options
| author | Peter Ujfalusi <peter.ujfalusi@ti.com> | 2015-10-14 13:42:50 +0200 |
|---|---|---|
| committer | Vinod Koul <vinod.koul@intel.com> | 2015-10-14 16:27:11 +0200 |
| commit | b2c843a196b8f5aca74ebabd16c60d59480d6721 (patch) | |
| tree | 33db82cbaece2e8123fb8a96b15ba33202e9fb30 /drivers/dma | |
| parent | ARM/dmaengine: edma: Public API to use private struct pointer (diff) | |
| download | linux-b2c843a196b8f5aca74ebabd16c60d59480d6721.tar.xz linux-b2c843a196b8f5aca74ebabd16c60d59480d6721.zip | |
ARM/dmaengine: edma: Remove limitation on the number of eDMA controllers
Since the driver stack no longer depends on lookup with id number in a
global array of pointers, the limitation for the number of eDMAs are no
longer needed. We can handle as many eDMAs in legacy and DT boot as we have
memory for them to allocate the needed structures.
Signed-off-by: Peter Ujfalusi <peter.ujfalusi@ti.com>
Signed-off-by: Vinod Koul <vinod.koul@intel.com>
Diffstat (limited to 'drivers/dma')
| -rw-r--r-- | drivers/dma/edma.c | 17 |
1 files changed, 8 insertions, 9 deletions
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"); |