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ASoC: fsl-asoc-card: add sysclk_ratio for calculate sysclk frequency

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The sysclk frequency can be calculated from sample rate multiply ratio.
When sysclk_freq is not configured, but sysclk_ratio is configured, then
calculate sysclk frequency according to sysclk_ratio.

Apply this change for wm8524 codec.

Signed-off-by: Shengjiu Wang <shengjiu.wang@nxp.com>
Link: https://patch.msgid.link/20250708085318.2563521-1-shengjiu.wang@nxp.com
Signed-off-by: Mark Brown <broonie@kernel.org>
This commit is contained in:
Shengjiu Wang 2025-07-08 16:53:17 +08:00 committed by Mark Brown
parent ad4655653a
commit af241e3fa4
No known key found for this signature in database
GPG Key ID: 24D68B725D5487D0
1 changed files with 11 additions and 2 deletions
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13
sound/soc/fsl/fsl-asoc-card.c
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@ -63,6 +63,7 @@ struct codec_priv {
* @sysclk_freq: SYSCLK rates for set_sysclk()
* @sysclk_dir: SYSCLK directions for set_sysclk()
* @sysclk_id: SYSCLK ids for set_sysclk()
* @sysclk_ratio: SYSCLK ratio on sample rate
* @slot_width: Slot width of each frame
* @slot_num: Number of slots of each frame
*
@ -72,6 +73,7 @@ struct cpu_priv {
unsigned long sysclk_freq[2];
u32 sysclk_dir[2];
u32 sysclk_id[2];
u32 sysclk_ratio[2];
u32 slot_width;
u32 slot_num;
};
@ -176,7 +178,7 @@ static int fsl_asoc_card_hw_params(struct snd_pcm_substream *substream,
struct snd_soc_dai *codec_dai;
struct cpu_priv *cpu_priv = &priv->cpu_priv;
struct device *dev = rtd->card->dev;
unsigned int pll_out;
unsigned int pll_out, sysclk_freq;
int codec_idx;
int ret;
@ -187,9 +189,14 @@ static int fsl_asoc_card_hw_params(struct snd_pcm_substream *substream,
if (fsl_asoc_card_is_ac97(priv))
return 0;
if (!cpu_priv->sysclk_freq[tx] && cpu_priv->sysclk_ratio[tx])
sysclk_freq = priv->sample_rate * cpu_priv->sysclk_ratio[tx];
else
sysclk_freq = cpu_priv->sysclk_freq[tx];
/* Specific configurations of DAIs starts from here */
ret = snd_soc_dai_set_sysclk(snd_soc_rtd_to_cpu(rtd, 0), cpu_priv->sysclk_id[tx],
cpu_priv->sysclk_freq[tx],
sysclk_freq,
cpu_priv->sysclk_dir[tx]);
if (ret && ret != -ENOTSUPP) {
dev_err(dev, "failed to set sysclk for cpu dai\n");
@ -799,6 +806,8 @@ static int fsl_asoc_card_probe(struct platform_device *pdev)
priv->cpu_priv.slot_width = 32;
priv->card.dapm_routes = audio_map_tx;
priv->card.num_dapm_routes = ARRAY_SIZE(audio_map_tx);
priv->cpu_priv.sysclk_dir[TX] = SND_SOC_CLOCK_OUT;
priv->cpu_priv.sysclk_ratio[TX] = 256;
} else if (of_device_is_compatible(np, "fsl,imx-audio-si476x")) {
codec_dai_name[0] = "si476x-codec";
priv->dai_fmt |= SND_SOC_DAIFMT_CBC_CFC;