From 24410f499e808884cc91239dc16013e5bee8779a Mon Sep 17 00:00:00 2001 From: Kuninori Morimoto Date: Mon, 6 Jan 2025 05:49:45 +0000 Subject: [PATCH] ASoC: soc-core: Enable to use extra format on each DAI Current ASoC is using dai_link->dai_fmt to set DAI format for both CPU/Codec. But because it is using same settings, and SND_SOC_DAIFMT_CLOCK_PROVIDER is flipped for CPU, we can't set both CPU/Codec as clock consumer, for example. To solve this issue, this patch enable to use extra format for each DAI which can keep compatibility with legacy system, 1. SND_SOC_DAIFMT_FORMAT_MASK 2. SND_SOC_DAIFMT_CLOCK 3. SND_SOC_DAIFMT_INV 4. SND_SOC_DAIFMT_CLOCK_PROVIDER Legacy dai_fmt includes 1, 2, 3, 4 New idea dai_fmt includes 1, 2, 3 ext_fmt includes 4 Signed-off-by: Kuninori Morimoto Tested-by: Stephen Gordon Link: https://patch.msgid.link/87r05go5ja.wl-kuninori.morimoto.gx@renesas.com Signed-off-by: Mark Brown --- include/sound/soc.h | 11 +++++++++++ sound/soc/soc-core.c | 27 +++++++++++++++++++++++++-- 2 files changed, 36 insertions(+), 2 deletions(-) diff --git a/include/sound/soc.h b/include/sound/soc.h index 1e09ff084247..fcdb5adfcd5e 100644 --- a/include/sound/soc.h +++ b/include/sound/soc.h @@ -681,6 +681,17 @@ struct snd_soc_dai_link_component { struct device_node *of_node; const char *dai_name; const struct of_phandle_args *dai_args; + + /* + * Extra format = SND_SOC_DAIFMT_Bx_Fx + * + * [Note] it is Bx_Fx base, not CBx_CFx + * + * It will be used with dai_link->dai_fmt + * see + * snd_soc_runtime_set_dai_fmt() + */ + unsigned int ext_fmt; }; /* diff --git a/sound/soc/soc-core.c b/sound/soc/soc-core.c index 9d2c8b393944..3c6d8aef4130 100644 --- a/sound/soc/soc-core.c +++ b/sound/soc/soc-core.c @@ -1449,23 +1449,46 @@ int snd_soc_runtime_set_dai_fmt(struct snd_soc_pcm_runtime *rtd, { struct snd_soc_dai *cpu_dai; struct snd_soc_dai *codec_dai; + unsigned int ext_fmt; unsigned int i; int ret; if (!dai_fmt) return 0; + /* + * dai_fmt has 4 types + * 1. SND_SOC_DAIFMT_FORMAT_MASK + * 2. SND_SOC_DAIFMT_CLOCK + * 3. SND_SOC_DAIFMT_INV + * 4. SND_SOC_DAIFMT_CLOCK_PROVIDER + * + * 4. CLOCK_PROVIDER is set from Codec perspective in dai_fmt. So it will be flipped + * when this function calls set_fmt() for CPU (CBx_CFx -> Bx_Cx). see below. + * This mean, we can't set CPU/Codec both are clock consumer for example. + * New idea handles 4. in each dai->ext_fmt. It can keep compatibility. + * + * Legacy + * dai_fmt includes 1, 2, 3, 4 + * + * New idea + * dai_fmt includes 1, 2, 3 + * ext_fmt includes 4 + */ for_each_rtd_codec_dais(rtd, i, codec_dai) { - ret = snd_soc_dai_set_fmt(codec_dai, dai_fmt); + ext_fmt = rtd->dai_link->codecs[i].ext_fmt; + ret = snd_soc_dai_set_fmt(codec_dai, dai_fmt | ext_fmt); if (ret != 0 && ret != -ENOTSUPP) return ret; } /* Flip the polarity for the "CPU" end of link */ + /* Will effect only for 4. SND_SOC_DAIFMT_CLOCK_PROVIDER */ dai_fmt = snd_soc_daifmt_clock_provider_flipped(dai_fmt); for_each_rtd_cpu_dais(rtd, i, cpu_dai) { - ret = snd_soc_dai_set_fmt(cpu_dai, dai_fmt); + ext_fmt = rtd->dai_link->cpus[i].ext_fmt; + ret = snd_soc_dai_set_fmt(cpu_dai, dai_fmt | ext_fmt); if (ret != 0 && ret != -ENOTSUPP) return ret; } -- 2.50.1