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59 lines
1.4 KiB
Diff
59 lines
1.4 KiB
Diff
From e2ecde1bc2a1d6c358bf71ab6b6643f66b935d3a Mon Sep 17 00:00:00 2001
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From: Phil Elwell <phil@raspberrypi.com>
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Date: Thu, 4 Mar 2021 14:49:23 +0000
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Subject: [PATCH] ASoC: dwc: Support set_bclk_ratio
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Signed-off-by: Phil Elwell <phil@raspberrypi.com>
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---
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sound/soc/dwc/dwc-i2s.c | 35 +++++++++++++++++++++++++++++++++++
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1 file changed, 35 insertions(+)
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--- a/sound/soc/dwc/dwc-i2s.c
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+++ b/sound/soc/dwc/dwc-i2s.c
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@@ -351,11 +351,46 @@ static int dw_i2s_set_fmt(struct snd_soc
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return ret;
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}
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+static int dw_i2s_set_bclk_ratio(struct snd_soc_dai *cpu_dai,
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+ unsigned int ratio)
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+{
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+ struct dw_i2s_dev *dev = snd_soc_dai_get_drvdata(cpu_dai);
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+ struct i2s_clk_config_data *config = &dev->config;
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+
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+ dev_err(dev->dev, "%s(%d)\n", __func__, ratio);
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+ switch (ratio) {
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+ case 32:
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+ config->data_width = 16;
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+ dev->ccr = 0x00;
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+ dev->xfer_resolution = 0x02;
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+ break;
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+
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+ case 48:
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+ config->data_width = 24;
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+ dev->ccr = 0x08;
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+ dev->xfer_resolution = 0x04;
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+ break;
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+
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+ case 64:
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+ config->data_width = 32;
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+ dev->ccr = 0x10;
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+ dev->xfer_resolution = 0x05;
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+ break;
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+ default:
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+ return -EINVAL;
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+ }
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+
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+ i2s_write_reg(dev->i2s_base, CCR, dev->ccr);
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+
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+ return 0;
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+}
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+
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static const struct snd_soc_dai_ops dw_i2s_dai_ops = {
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.hw_params = dw_i2s_hw_params,
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.prepare = dw_i2s_prepare,
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.trigger = dw_i2s_trigger,
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.set_fmt = dw_i2s_set_fmt,
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+ .set_bclk_ratio = dw_i2s_set_bclk_ratio,
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};
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#ifdef CONFIG_PM
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