const char *dai_name;
};
+struct snd_soc_dai_link_codec_ch_map {
+ unsigned int connected_cpu_id;
+ unsigned int ch_mask;
+};
+
struct snd_soc_dai_link {
/* config - must be set by machine driver */
const char *name; /* Codec name */
struct snd_soc_dai_link_component *codecs;
unsigned int num_codecs;
+ struct snd_soc_dai_link_codec_ch_map *codec_ch_maps;
/*
* You MAY specify the link's platform/PCM/DMA driver, either by
* device name, or by DT/OF node, but not both. Some forms of link
for_each_rtd_codec_dais(rtd, i, codec_dai)
dapm_connect_dai_pair(card, rtd, codec_dai,
asoc_rtd_to_cpu(rtd, i));
+ } else if (rtd->dai_link->num_codecs > rtd->dai_link->num_cpus) {
+ int cpu_id;
+
+ if (!rtd->dai_link->codec_ch_maps) {
+ dev_err(card->dev, "%s: no codec channel mapping table provided\n",
+ __func__);
+ continue;
+ }
+
+ for_each_rtd_codec_dais(rtd, i, codec_dai) {
+ cpu_id = rtd->dai_link->codec_ch_maps[i].connected_cpu_id;
+ if (cpu_id >= rtd->dai_link->num_cpus) {
+ dev_err(card->dev,
+ "%s: dai_link %s cpu_id %d too large, num_cpus is %d\n",
+ __func__, rtd->dai_link->name, cpu_id,
+ rtd->dai_link->num_cpus);
+ continue;
+ }
+ dapm_connect_dai_pair(card, rtd, codec_dai,
+ asoc_rtd_to_cpu(rtd, cpu_id));
+ }
} else {
dev_err(card->dev,
- "N cpus to M codecs link is not supported yet\n");
+ "%s: codec number %d < cpu number %d is not supported\n",
+ __func__, rtd->dai_link->num_codecs, rtd->dai_link->num_cpus);
}
}
}
}
for_each_rtd_cpu_dais(rtd, i, cpu_dai) {
+ struct snd_pcm_hw_params cpu_params;
+ unsigned int ch_mask = 0;
+ int j;
+
/*
* Skip CPUs which don't support the current stream
* type. See soc_pcm_init_runtime_hw() for more details
if (!snd_soc_dai_stream_valid(cpu_dai, substream->stream))
continue;
- ret = snd_soc_dai_hw_params(cpu_dai, substream, params);
+ /* copy params for each cpu */
+ cpu_params = *params;
+
+ if (!rtd->dai_link->codec_ch_maps)
+ goto hw_params;
+ /*
+ * construct cpu channel mask by combining ch_mask of each
+ * codec which maps to the cpu.
+ */
+ for_each_rtd_codec_dais(rtd, j, codec_dai) {
+ if (rtd->dai_link->codec_ch_maps[j].connected_cpu_id == i)
+ ch_mask |= rtd->dai_link->codec_ch_maps[j].ch_mask;
+ }
+
+ /* fixup cpu channel number */
+ if (ch_mask)
+ soc_pcm_codec_params_fixup(&cpu_params, ch_mask);
+
+hw_params:
+ ret = snd_soc_dai_hw_params(cpu_dai, substream, &cpu_params);
if (ret < 0)
goto out;
/* store the parameters for each DAI */
- soc_pcm_set_dai_params(cpu_dai, params);
- snd_soc_dapm_update_dai(substream, params, cpu_dai);
+ soc_pcm_set_dai_params(cpu_dai, &cpu_params);
+ snd_soc_dapm_update_dai(substream, &cpu_params, cpu_dai);
}
ret = snd_soc_pcm_component_hw_params(substream, params);
cpu_dai = asoc_rtd_to_cpu(rtd, 0);
} else if (dai_link->num_cpus == dai_link->num_codecs) {
cpu_dai = asoc_rtd_to_cpu(rtd, i);
+ } else if (rtd->dai_link->num_codecs > rtd->dai_link->num_cpus) {
+ int cpu_id;
+
+ if (!rtd->dai_link->codec_ch_maps) {
+ dev_err(rtd->card->dev, "%s: no codec channel mapping table provided\n",
+ __func__);
+ return -EINVAL;
+ }
+
+ cpu_id = rtd->dai_link->codec_ch_maps[i].connected_cpu_id;
+ cpu_dai = asoc_rtd_to_cpu(rtd, cpu_id);
} else {
dev_err(rtd->card->dev,
- "N cpus to M codecs link is not supported yet\n");
+ "%s codec number %d < cpu number %d is not supported\n",
+ __func__, rtd->dai_link->num_codecs,
+ rtd->dai_link->num_cpus);
return -EINVAL;
}