[PATCH v4 4/7] mtd: nand: omap2: Support parsing dma channel information from DT

Franklin S Cooper Jr
2016-03-10T23:56:40Z

Switch from dma_request_channel to allow passing dma channel
information from DT rather than hardcoding a value.

Also provide a handle to the GPMC's dev so it can be used to parse the DMA
channel information within the GPMC's DT node.

Signed-off-by: Franklin S Cooper Jr <fcooper@ti.com>
---
Version 4 changes:
Pass parent instead of new variable from the platform data

drivers/mtd/nand/omap2.c | 4 +++-
1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/drivers/mtd/nand/omap2.c b/drivers/mtd/nand/omap2.c
index c553f78..95bc636 100644
--- a/drivers/mtd/nand/omap2.c
+++ b/drivers/mtd/nand/omap2.c
@@ -1731,7 +1731,9 @@ static int omap_nand_probe(struct platform_device *pdev)
dma_cap_zero(mask);
dma_cap_set(DMA_SLAVE, mask);
sig = OMAP24XX_DMA_GPMC;
- info->dma = dma_request_channel(mask, omap_dma_filter_fn, &sig);
+ info->dma = dma_request_slave_channel_compat(mask,
+ omap_dma_filter_fn, &sig, pdev->dev.parent, "rxtx");
+
if (!info->dma) {
dev_err(&pdev->dev, "DMA engine request failed\n");
err = -ENXIO;
--
2.7.0