diff --git a/include/sound/soc_sdw_utils.h b/include/sound/soc_sdw_utils.h index 0e82598e10af05..36a4a1e1d8ca28 100644 --- a/include/sound/soc_sdw_utils.h +++ b/include/sound/soc_sdw_utils.h @@ -224,6 +224,8 @@ int asoc_sdw_cs_amp_init(struct snd_soc_card *card, struct snd_soc_dai_link *dai_links, struct asoc_sdw_codec_info *info, bool playback); +int asoc_sdw_cs_spk_feedback_rtd_init(struct snd_soc_pcm_runtime *rtd, + struct snd_soc_dai *dai); /* MAXIM codec support */ int asoc_sdw_maxim_init(struct snd_soc_card *card, diff --git a/sound/soc/sdw_utils/soc_sdw_cs_amp.c b/sound/soc/sdw_utils/soc_sdw_cs_amp.c index 58b059b68016b8..9146a421e02c63 100644 --- a/sound/soc/sdw_utils/soc_sdw_cs_amp.c +++ b/sound/soc/sdw_utils/soc_sdw_cs_amp.c @@ -15,6 +15,7 @@ #include #define CODEC_NAME_SIZE 8 +#define CS_AMP_CHANNELS_PER_AMP 4 int asoc_sdw_cs_spk_rtd_init(struct snd_soc_pcm_runtime *rtd, struct snd_soc_dai *dai) { @@ -48,6 +49,51 @@ int asoc_sdw_cs_spk_rtd_init(struct snd_soc_pcm_runtime *rtd, struct snd_soc_dai } EXPORT_SYMBOL_NS(asoc_sdw_cs_spk_rtd_init, SND_SOC_SDW_UTILS); +int asoc_sdw_cs_spk_feedback_rtd_init(struct snd_soc_pcm_runtime *rtd, struct snd_soc_dai *dai) +{ + const struct snd_soc_dai_link *dai_link = rtd->dai_link; + const struct snd_soc_dai_link_ch_map *ch_map; + const struct snd_soc_dai_link_component *codec_dlc; + struct snd_soc_dai *codec_dai; + u8 ch_slot[8] = {}; + unsigned int amps_per_bus, ch_per_amp, mask; + int i, ret; + + WARN_ON(dai_link->num_cpus > ARRAY_SIZE(ch_slot)); + + /* + * CS35L56 has 4 TX channels. When the capture is aggregated the + * same bus slots will be allocated to all the amps on a bus. Only + * one amp on that bus can be transmitting in each slot so divide + * the available 4 slots between all the amps on a bus. + */ + amps_per_bus = dai_link->num_codecs / dai_link->num_cpus; + if ((amps_per_bus == 0) || (amps_per_bus > CS_AMP_CHANNELS_PER_AMP)) { + dev_err(rtd->card->dev, "Illegal num_codecs:%u / num_cpus:%u\n", + dai_link->num_codecs, dai_link->num_cpus); + return -EINVAL; + } + + ch_per_amp = CS_AMP_CHANNELS_PER_AMP / amps_per_bus; + + for_each_rtd_ch_maps(rtd, i, ch_map) { + codec_dlc = snd_soc_link_to_codec(rtd->dai_link, i); + codec_dai = snd_soc_find_dai(codec_dlc); + mask = GENMASK(ch_per_amp - 1, 0) << ch_slot[ch_map->cpu]; + + ret = snd_soc_dai_set_tdm_slot(codec_dai, 0, mask, 4, 32); + if (ret < 0) { + dev_err(rtd->card->dev, "Failed to set TDM slot:%d\n", ret); + return ret; + } + + ch_slot[ch_map->cpu] += ch_per_amp; + } + + return 0; +} +EXPORT_SYMBOL_NS(asoc_sdw_cs_spk_feedback_rtd_init, SND_SOC_SDW_UTILS); + int asoc_sdw_cs_amp_init(struct snd_soc_card *card, struct snd_soc_dai_link *dai_links, struct asoc_sdw_codec_info *info, diff --git a/sound/soc/sdw_utils/soc_sdw_utils.c b/sound/soc/sdw_utils/soc_sdw_utils.c index 111e00e916c563..375b46c5b42977 100644 --- a/sound/soc/sdw_utils/soc_sdw_utils.c +++ b/sound/soc/sdw_utils/soc_sdw_utils.c @@ -504,6 +504,7 @@ struct asoc_sdw_codec_info codec_info_list[] = { .dai_name = "cs35l56-sdw1c", .dai_type = SOC_SDW_DAI_TYPE_AMP, .dailink = {SOC_SDW_UNUSED_DAI_ID, SOC_SDW_AMP_IN_DAI_ID}, + .rtd_init = asoc_sdw_cs_spk_feedback_rtd_init, }, }, .dai_num = 2,