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| author | Shravan Chippa <shravan.chippa@microchip.com> | 2023-12-08 11:38:53 +0100 |
|---|---|---|
| committer | Vinod Koul <vkoul@kernel.org> | 2023-12-11 12:03:22 +0100 |
| commit | 8e578b47e6d92d5e43982ddc54045973dd4a7de5 (patch) | |
| tree | 96d375ff0534d06fdcdb01112083e00484b37f8d | |
| parent | dt-bindings: dma: Drop undocumented examples (diff) | |
| download | linux-8e578b47e6d92d5e43982ddc54045973dd4a7de5.tar.xz linux-8e578b47e6d92d5e43982ddc54045973dd4a7de5.zip | |
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: 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>
| -rw-r--r-- | drivers/dma/sf-pdma/sf-pdma.c | 17 |
1 files changed, 17 insertions, 0 deletions
diff --git a/drivers/dma/sf-pdma/sf-pdma.c b/drivers/dma/sf-pdma/sf-pdma.c index 3125a2f162b4..6109e1c5a09e 100644 --- a/drivers/dma/sf-pdma/sf-pdma.c +++ b/drivers/dma/sf-pdma/sf-pdma.c @@ -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); } |