Commit 8e578b47 authored by Shravan Chippa's avatar Shravan Chippa Committed by Vinod Koul
Browse files

dmaengine: sf-pdma: Support of_dma_controller_register() 



Update sf-pdma driver to adopt generic DMA device tree bindings.
It calls of_dma_controller_register() with of_dma_xlate_by_chan_id
to get the generic DMA device tree helper support and the DMA
clients can look up the sf-pdma controller using standard APIs.

Signed-off-by: default avatarShravan Chippa <shravan.chippa@microchip.com>
Link: https://lore.kernel.org/r/20231208103856.3732998-2-shravan.chippa@microchip.com


Signed-off-by: default avatarVinod Koul <vkoul@kernel.org>
parent 4a8ececb

drivers/dma/sf-pdma/sf-pdma.c

+17 −0
Original line number Diff line number Diff line
@@ -20,6 +20,7 @@ 
#include <linux/mod_devicetable.h>

#include <linux/dma-mapping.h>

#include <linux/of.h>

#include <linux/of_dma.h>

#include <linux/slab.h>



#include "sf-pdma.h"
@@ -563,7 +564,20 @@ static int sf_pdma_probe(struct platform_device *pdev) 
		return ret;

	}



	ret = of_dma_controller_register(pdev->dev.of_node,

					 of_dma_xlate_by_chan_id, pdma);

	if (ret < 0) {

		dev_err(&pdev->dev,

			"Can't register SiFive Platform OF_DMA. (%d)\n", ret);

		goto err_unregister;

	}



	return 0;



err_unregister:

	dma_async_device_unregister(&pdma->dma_dev);



	return ret;

}



static void sf_pdma_remove(struct platform_device *pdev)
@@ -583,6 +597,9 @@ static void sf_pdma_remove(struct platform_device *pdev) 
		tasklet_kill(&ch->err_tasklet);

	}



	if (pdev->dev.of_node)

		of_dma_controller_free(pdev->dev.of_node);



	dma_async_device_unregister(&pdma->dma_dev);

}