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Commit ec1f0c96 authored by Alexander Popov's avatar Alexander Popov Committed by Vinod Koul
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dmaengine: mpc512x: register for device tree channel lookup



Register the controller for device tree based lookup of DMA channels
(non-fatal for backwards compatibility with older device trees) and
provide the '#dma-cells' property in the shared mpc5121.dtsi file

Signed-off-by: default avatarAlexander Popov <a13xp0p0v88@gmail.com>
Signed-off-by: default avatarVinod Koul <vinod.koul@intel.com>
parent 16369efb
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+1 −0
Original line number Diff line number Diff line
@@ -498,6 +498,7 @@
			compatible = "fsl,mpc5121-dma";
			reg = <0x14000 0x1800>;
			interrupts = <65 0x8>;
			#dma-cells = <1>;
		};
	};

+12 −1
Original line number Diff line number Diff line
@@ -53,6 +53,7 @@
#include <linux/of_address.h>
#include <linux/of_device.h>
#include <linux/of_irq.h>
#include <linux/of_dma.h>
#include <linux/of_platform.h>

#include <linux/random.h>
@@ -1036,7 +1037,15 @@ static int mpc_dma_probe(struct platform_device *op)
	if (retval)
		goto err_free2;

	return retval;
	/* Register with OF helpers for DMA lookups (nonfatal) */
	if (dev->of_node) {
		retval = of_dma_controller_register(dev->of_node,
						of_dma_xlate_by_chan_id, mdma);
		if (retval)
			dev_warn(dev, "Could not register for OF lookup\n");
	}

	return 0;

err_free2:
	if (mdma->is_mpc8308)
@@ -1057,6 +1066,8 @@ static int mpc_dma_remove(struct platform_device *op)
	struct device *dev = &op->dev;
	struct mpc_dma *mdma = dev_get_drvdata(dev);

	if (dev->of_node)
		of_dma_controller_free(dev->of_node);
	dma_async_device_unregister(&mdma->dma);
	if (mdma->is_mpc8308) {
		free_irq(mdma->irq2, mdma);