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[PATCH 0/2] mtd: nand: omap2: Add EDMA support for NAND DMA prefetch

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  [PATCH 0/2] mtd: nand: omap2: Add EDMA support for NAND DMA prefetch Franklin S Cooper Jr <fcooper@ti.com> - 2016-05-03 20:00 +0200
    [PATCH 1/2] mtd: nand: omap2: Support parsing dma channel information from DT Franklin S Cooper Jr <fcooper@ti.com> - 2016-05-03 20:00 +0200

#1393690 — [PATCH 0/2] mtd: nand: omap2: Add EDMA support for NAND DMA prefetch

This patchset includes the required patches to enable NAND DMA prefetch
support when using the EDMA.

This patchset depends on my previous patchset to enable NAND DMA prefetch
using the SDMA and Roger's GPMC and NAND rework. Both of these patchsets
are apart of Boris' NAND next patch. Therefore, these patches are also
built on top of this branch.

Also the following patches that fixes GPMC's DMA property are required
and pulled into other trees but are not currently apart of the above
branch:
https://patchwork.ozlabs.org/patch/596014/
https://patchwork.ozlabs.org/patch/596012/

Cooper Jr., Franklin (2):
  mtd: nand: omap2: Support parsing dma channel information from DT
  ARM: OMAP2+: Update GPMC and NAND DT binding documentation

 Documentation/devicetree/bindings/memory-controllers/omap-gpmc.txt | 7 ++++++-
 Documentation/devicetree/bindings/mtd/gpmc-nand.txt                | 2 +-
 drivers/mtd/nand/omap2.c                                           | 4 +++-
 3 files changed, 10 insertions(+), 3 deletions(-)

-- 
2.7.0

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#1393693 — [PATCH 1/2] mtd: nand: omap2: Support parsing dma channel information from DT

From: "Cooper Jr., Franklin" <fcooper@ti.com>

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>
---
 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 08e1588..f864369 100644
--- a/drivers/mtd/nand/omap2.c
+++ b/drivers/mtd/nand/omap2.c
@@ -1922,7 +1922,9 @@ 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

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