From bc619cfc6278c87b4e310f9db9f45abc263220e8 Mon Sep 17 00:00:00 2001
From: Brent Lu <brent.lu@intel.com>
Date: Fri, 25 Jun 2021 15:50:41 -0500
Subject: [PATCH] ASoC: SOF: add a helper to get topology configured bclk
Git-commit: bc619cfc6278c87b4e310f9db9f45abc263220e8
Patch-mainline: v5.15-rc1
References: bsc#1192354
Add helper function sof_dai_ssp_bclk() to get the BCLK frequency
configured by topology.
Reviewed-by: Bard Liao <bard.liao@intel.com>
Signed-off-by: Brent Lu <brent.lu@intel.com>
Signed-off-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>
Link: https://lore.kernel.org/r/20210625205042.65181-4-pierre-louis.bossart@linux.intel.com
Signed-off-by: Mark Brown <broonie@kernel.org>
Acked-by: Takashi Iwai <tiwai@suse.de>
---
include/sound/sof.h | 1 +
sound/soc/sof/sof-audio.c | 42 ++++++++++++++++++++++++++++++++-------
2 files changed, 36 insertions(+), 7 deletions(-)
diff --git a/include/sound/sof.h b/include/sound/sof.h
index 502ed9b8d6a1..6a1cd8e783d8 100644
--- a/include/sound/sof.h
+++ b/include/sound/sof.h
@@ -101,5 +101,6 @@ struct sof_dev_desc {
};
int sof_dai_get_mclk(struct snd_soc_pcm_runtime *rtd);
+int sof_dai_get_bclk(struct snd_soc_pcm_runtime *rtd);
#endif
diff --git a/sound/soc/sof/sof-audio.c b/sound/soc/sof/sof-audio.c
index 510883cd9107..989912f2b739 100644
--- a/sound/soc/sof/sof-audio.c
+++ b/sound/soc/sof/sof-audio.c
@@ -433,11 +433,10 @@ struct snd_sof_dai *snd_sof_find_dai(struct snd_soc_component *scomp,
return NULL;
}
-/*
- * Helper to get SSP MCLK from a pcm_runtime.
- * Return 0 if not exist.
- */
-int sof_dai_get_mclk(struct snd_soc_pcm_runtime *rtd)
+#define SOF_DAI_CLK_INTEL_SSP_MCLK 0
+#define SOF_DAI_CLK_INTEL_SSP_BCLK 1
+
+static int sof_dai_get_clk(struct snd_soc_pcm_runtime *rtd, int clk_type)
{
struct snd_soc_component *component =
snd_soc_rtdcom_lookup(rtd, SOF_AUDIO_PCM_DRV_NAME);
@@ -450,16 +449,45 @@ int sof_dai_get_mclk(struct snd_soc_pcm_runtime *rtd)
switch (dai->dai_config->type) {
case SOF_DAI_INTEL_SSP:
- return dai->dai_config->ssp.mclk_rate;
+ switch (clk_type) {
+ case SOF_DAI_CLK_INTEL_SSP_MCLK:
+ return dai->dai_config->ssp.mclk_rate;
+ case SOF_DAI_CLK_INTEL_SSP_BCLK:
+ return dai->dai_config->ssp.bclk_rate;
+ default:
+ dev_err(rtd->dev, "fail to get SSP clk %d rate\n",
+ clk_type);
+ return -EINVAL;
+ }
+ break;
default:
/* not yet implemented for platforms other than the above */
- dev_err(rtd->dev, "mclk for dai_config->type %d not supported yet!\n",
+ dev_err(rtd->dev, "DAI type %d not supported yet!\n",
dai->dai_config->type);
return -EINVAL;
}
}
+
+/*
+ * Helper to get SSP MCLK from a pcm_runtime.
+ * Return 0 if not exist.
+ */
+int sof_dai_get_mclk(struct snd_soc_pcm_runtime *rtd)
+{
+ return sof_dai_get_clk(rtd, SOF_DAI_CLK_INTEL_SSP_MCLK);
+}
EXPORT_SYMBOL(sof_dai_get_mclk);
+/*
+ * Helper to get SSP BCLK from a pcm_runtime.
+ * Return 0 if not exist.
+ */
+int sof_dai_get_bclk(struct snd_soc_pcm_runtime *rtd)
+{
+ return sof_dai_get_clk(rtd, SOF_DAI_CLK_INTEL_SSP_BCLK);
+}
+EXPORT_SYMBOL(sof_dai_get_bclk);
+
/*
* SOF Driver enumeration.
*/
--
2.26.2