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dmaengine: sf-pdma: Support of_dma_controller_register()

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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: Shravan Chippa <shravan.chippa@microchip.com>
Link: https://lore.kernel.org/r/20231208103856.3732998-2-shravan.chippa@microchip.com
Signed-off-by: Vinod Koul <vkoul@kernel.org>
This commit is contained in:
Shravan Chippa 2023-12-08 16:08:53 +05:30 committed by Vinod Koul
parent 4a8ececbb5
commit 8e578b47e6
1 changed files with 17 additions and 0 deletions
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17
drivers/dma/sf-pdma/sf-pdma.c
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@ -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);
}