ASoC: fsl-ssi: Use generic DMA bindings if possible
There may be some platforms using fsl-ssi that do not have a DMA driver with generic DMA bindings. So this patch adds support for the generic DMA bindings, while still accepting the old "fsl,dma-events" property if "dmas" is not found. Signed-off-by: Markus Pargmann <mpa@pengutronix.de> Tested-by: Shawn Guo <shawn.guo@linaro.org> Signed-off-by: Mark Brown <broonie@linaro.org>
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@ -51,6 +51,10 @@ Optional properties:
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filter the codec stream. This is necessary for some boards
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where an incompatible codec is connected to this SSI, e.g.
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on pca100 and pcm043.
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- dmas: Generic dma devicetree binding as described in
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Documentation/devicetree/bindings/dma/dma.txt.
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- dma-names: Two dmas have to be defined, "tx" and "rx", if fsl,imx-fiq
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is not defined.
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Child 'codec' node required properties:
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- compatible: Compatible list, contains the name of the codec
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@ -794,15 +794,19 @@ static int fsl_ssi_probe(struct platform_device *pdev)
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&ssi_private->filter_data_tx;
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ssi_private->dma_params_rx.filter_data =
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&ssi_private->filter_data_rx;
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/*
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* TODO: This is a temporary solution and should be changed
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* to use generic DMA binding later when the helplers get in.
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*/
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ret = of_property_read_u32_array(pdev->dev.of_node,
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if (!of_property_read_bool(pdev->dev.of_node, "dmas") &&
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ssi_private->use_dma) {
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/*
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* FIXME: This is a temporary solution until all
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* necessary dma drivers support the generic dma
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* bindings.
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*/
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ret = of_property_read_u32_array(pdev->dev.of_node,
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"fsl,ssi-dma-events", dma_events, 2);
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if (ret && !ssi_private->use_dma) {
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dev_err(&pdev->dev, "could not get dma events\n");
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goto error_clk;
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if (ret && ssi_private->use_dma) {
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dev_err(&pdev->dev, "could not get dma events but fsl-ssi is configured to use DMA\n");
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goto error_clk;
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}
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}
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shared = of_device_is_compatible(of_get_parent(np),
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