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ASoC: sunxi: compatibility for sun6i to SPDIF
The A31 SoC uses the same SPDIF block as found in earlier SoCs, but its reset is controlled via a separate reset controller. The DMA also complains when the maxburst is set to 4 so it's been adjusted to 8 which suites both the older and newer SoCs. Signed-off-by: Marcus Cooper <codekipper@gmail.com> Signed-off-by: Mark Brown <broonie@kernel.org>
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2f6963cb52
1 changed files with 16 additions and 1 deletions
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@ -29,6 +29,7 @@
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#include <linux/module.h>
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#include <linux/platform_device.h>
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#include <linux/pm_runtime.h>
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#include <linux/reset.h>
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#include <sound/dmaengine_pcm.h>
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#include <sound/pcm_params.h>
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#include <sound/soc.h>
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@ -162,6 +163,7 @@ struct sun4i_spdif_dev {
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struct platform_device *pdev;
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struct clk *spdif_clk;
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struct clk *apb_clk;
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struct reset_control *rst;
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struct snd_soc_dai_driver cpu_dai_drv;
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struct regmap *regmap;
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struct snd_dmaengine_dai_dma_data dma_params_tx;
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@ -411,6 +413,7 @@ static const struct snd_soc_dapm_route dit_routes[] = {
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static const struct of_device_id sun4i_spdif_of_match[] = {
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{ .compatible = "allwinner,sun4i-a10-spdif", },
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{ .compatible = "allwinner,sun6i-a31-spdif", },
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{ /* sentinel */ }
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};
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MODULE_DEVICE_TABLE(of, sun4i_spdif_of_match);
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@ -482,11 +485,23 @@ static int sun4i_spdif_probe(struct platform_device *pdev)
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}
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host->dma_params_tx.addr = res->start + SUN4I_SPDIF_TXFIFO;
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host->dma_params_tx.maxburst = 4;
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host->dma_params_tx.maxburst = 8;
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host->dma_params_tx.addr_width = DMA_SLAVE_BUSWIDTH_2_BYTES;
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platform_set_drvdata(pdev, host);
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if (of_device_is_compatible(pdev->dev.of_node,
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"allwinner,sun6i-a31-spdif")) {
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host->rst = devm_reset_control_get_optional(&pdev->dev, NULL);
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if (IS_ERR(host->rst) && PTR_ERR(host->rst) == -EPROBE_DEFER) {
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ret = -EPROBE_DEFER;
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dev_err(&pdev->dev, "Failed to get reset: %d\n", ret);
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goto err_disable_apb_clk;
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}
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if (!IS_ERR(host->rst))
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reset_control_deassert(host->rst);
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}
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ret = devm_snd_soc_register_component(&pdev->dev,
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&sun4i_spdif_component, &sun4i_spdif_dai, 1);
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if (ret)
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