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| author | Marcus Cooper <codekipper@gmail.com> | 2016-07-30 17:56:38 +0200 |
|---|---|---|
| committer | Mark Brown <broonie@kernel.org> | 2016-08-12 12:00:34 +0100 |
| commit | 2f6963cb52bee440105f732b3411f18e38ed6e52 (patch) | |
| tree | 034e22d1d1f3d2ce9cc50616f8997443df0847a6 | |
| parent | fbb016a25dd0f4160df90bb1319e64e8209c7619 (diff) | |
| download | linux-2f6963cb52bee440105f732b3411f18e38ed6e52.tar.gz linux-2f6963cb52bee440105f732b3411f18e38ed6e52.tar.bz2 linux-2f6963cb52bee440105f732b3411f18e38ed6e52.zip | |
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>
| -rw-r--r-- | sound/soc/sunxi/sun4i-spdif.c | 17 |
1 files changed, 16 insertions, 1 deletions
diff --git a/sound/soc/sunxi/sun4i-spdif.c b/sound/soc/sunxi/sun4i-spdif.c index 0b04fb02125c..88fbb3a1e660 100644 --- a/sound/soc/sunxi/sun4i-spdif.c +++ b/sound/soc/sunxi/sun4i-spdif.c @@ -29,6 +29,7 @@ #include <linux/module.h> #include <linux/platform_device.h> #include <linux/pm_runtime.h> +#include <linux/reset.h> #include <sound/dmaengine_pcm.h> #include <sound/pcm_params.h> #include <sound/soc.h> @@ -162,6 +163,7 @@ struct sun4i_spdif_dev { struct platform_device *pdev; struct clk *spdif_clk; struct clk *apb_clk; + struct reset_control *rst; struct snd_soc_dai_driver cpu_dai_drv; struct regmap *regmap; struct snd_dmaengine_dai_dma_data dma_params_tx; @@ -411,6 +413,7 @@ static const struct snd_soc_dapm_route dit_routes[] = { static const struct of_device_id sun4i_spdif_of_match[] = { { .compatible = "allwinner,sun4i-a10-spdif", }, + { .compatible = "allwinner,sun6i-a31-spdif", }, { /* sentinel */ } }; MODULE_DEVICE_TABLE(of, sun4i_spdif_of_match); @@ -482,11 +485,23 @@ static int sun4i_spdif_probe(struct platform_device *pdev) } host->dma_params_tx.addr = res->start + SUN4I_SPDIF_TXFIFO; - host->dma_params_tx.maxburst = 4; + host->dma_params_tx.maxburst = 8; host->dma_params_tx.addr_width = DMA_SLAVE_BUSWIDTH_2_BYTES; platform_set_drvdata(pdev, host); + if (of_device_is_compatible(pdev->dev.of_node, + "allwinner,sun6i-a31-spdif")) { + host->rst = devm_reset_control_get_optional(&pdev->dev, NULL); + if (IS_ERR(host->rst) && PTR_ERR(host->rst) == -EPROBE_DEFER) { + ret = -EPROBE_DEFER; + dev_err(&pdev->dev, "Failed to get reset: %d\n", ret); + goto err_disable_apb_clk; + } + if (!IS_ERR(host->rst)) + reset_control_deassert(host->rst); + } + ret = devm_snd_soc_register_component(&pdev->dev, &sun4i_spdif_component, &sun4i_spdif_dai, 1); if (ret) |