Current ASoC CPU:Codec = N:M connection is using connection mapping idea, but it is used for N < M case only. We want to use it for any case.
By this patch, not only N:M connection, but all existing connection (1:1, 1:N, N:N) will use same connection mapping. Then, because it will use default mapping, no conversion patch is needed to exising drivers.
More over, CPU:Codec = N:M (N > M) also supported in the same time.
ch_maps array will has CPU/Codec index by this patch.
Image CPU0 <---> Codec0 CPU1 <-+-> Codec1 CPU2 <-/
ch_map ch_map[0].cpu = 0 ch_map[0].codec = 0 ch_map[1].cpu = 1 ch_map[1].codec = 1 ch_map[2].cpu = 2 ch_map[2].codec = 1
Link: https://lore.kernel.org/r/87fs6wuszr.wl-kuninori.morimoto.gx@renesas.com Link: https://lore.kernel.org/r/878r7yqeo4.wl-kuninori.morimoto.gx@renesas.com Signed-off-by: Kuninori Morimoto kuninori.morimoto.gx@renesas.com Tested-by: Pierre-Louis Bossart pierre-louis.bossart@linux.intel.com Tested-by: Jerome Brunet jbrunet@baylibre.com --- include/sound/soc.h | 56 ++++++++++++++++++- sound/soc/intel/boards/sof_sdw.c | 28 ++++------ sound/soc/soc-core.c | 95 +++++++++++++++++++++++++++++++- sound/soc/soc-dapm.c | 45 ++++----------- sound/soc/soc-pcm.c | 44 +++++---------- 5 files changed, 185 insertions(+), 83 deletions(-)
diff --git a/include/sound/soc.h b/include/sound/soc.h index 7792c393e238..f3803c2dc349 100644 --- a/include/sound/soc.h +++ b/include/sound/soc.h @@ -655,8 +655,45 @@ struct snd_soc_dai_link_component { struct of_phandle_args *dai_args; };
-struct snd_soc_dai_link_codec_ch_map { - unsigned int connected_cpu_id; +/* + * [dai_link->ch_maps Image sample] + * + *------------------------- + * CPU0 <---> Codec0 + * + * ch-map[0].cpu = 0 ch-map[0].codec = 0 + * + *------------------------- + * CPU0 <---> Codec0 + * CPU1 <---> Codec1 + * CPU2 <---> Codec2 + * + * ch-map[0].cpu = 0 ch-map[0].codec = 0 + * ch-map[1].cpu = 1 ch-map[1].codec = 1 + * ch-map[2].cpu = 2 ch-map[2].codec = 2 + * + *------------------------- + * CPU0 <---> Codec0 + * CPU1 <-+-> Codec1 + * CPU2 <-/ + * + * ch-map[0].cpu = 0 ch-map[0].codec = 0 + * ch-map[1].cpu = 1 ch-map[1].codec = 1 + * ch-map[2].cpu = 2 ch-map[2].codec = 1 + * + *------------------------- + * CPU0 <---> Codec0 + * CPU1 <-+-> Codec1 + * -> Codec2 + * + * ch-map[0].cpu = 0 ch-map[0].codec = 0 + * ch-map[1].cpu = 1 ch-map[1].codec = 1 + * ch-map[2].cpu = 1 ch-map[2].codec = 2 + * + */ +struct snd_soc_dai_link_ch_map { + unsigned int cpu; + unsigned int codec; unsigned int ch_mask; };
@@ -688,7 +725,9 @@ struct snd_soc_dai_link { struct snd_soc_dai_link_component *codecs; unsigned int num_codecs;
- struct snd_soc_dai_link_codec_ch_map *codec_ch_maps; + /* num_ch_maps = max(num_cpu, num_codecs) */ + struct snd_soc_dai_link_ch_map *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 @@ -775,6 +814,10 @@ struct snd_soc_dai_link { #endif };
+static inline int snd_soc_link_num_ch_map(struct snd_soc_dai_link *link) { + return max(link->num_cpus, link->num_codecs); +} + static inline struct snd_soc_dai_link_component* snd_soc_link_to_cpu(struct snd_soc_dai_link *link, int n) { return &(link)->cpus[n]; @@ -808,6 +851,12 @@ snd_soc_link_to_platform(struct snd_soc_dai_link *link, int n) { ((cpu) = snd_soc_link_to_cpu(link, i)); \ (i)++)
+#define for_each_link_ch_maps(link, i, ch_map) \ + for ((i) = 0; \ + ((i) < snd_soc_link_num_ch_map(link) && \ + ((ch_map) = link->ch_maps + i)); \ + (i)++) + /* * Sample 1 : Single CPU/Codec/Platform * @@ -1163,6 +1212,7 @@ struct snd_soc_pcm_runtime { ((i) < (rtd)->dai_link->num_cpus + (rtd)->dai_link->num_codecs) && \ ((dai) = (rtd)->dais[i]); \ (i)++) +#define for_each_rtd_ch_maps(rtd, i, ch_maps) for_each_link_ch_maps(rtd->dai_link, i, ch_maps)
void snd_soc_close_delayed_work(struct snd_soc_pcm_runtime *rtd);
diff --git a/sound/soc/intel/boards/sof_sdw.c b/sound/soc/intel/boards/sof_sdw.c index 3312ad8a563b..2faf7372bad0 100644 --- a/sound/soc/intel/boards/sof_sdw.c +++ b/sound/soc/intel/boards/sof_sdw.c @@ -570,16 +570,14 @@ int sdw_hw_params(struct snd_pcm_substream *substream, struct snd_pcm_hw_params *params) { struct snd_soc_pcm_runtime *rtd = snd_soc_substream_to_rtd(substream); + struct snd_soc_dai_link_ch_map *ch_maps; int ch = params_channels(params); - struct snd_soc_dai *codec_dai; - struct snd_soc_dai *cpu_dai; unsigned int ch_mask; int num_codecs; int step; int i; - int j;
- if (!rtd->dai_link->codec_ch_maps) + if (!rtd->dai_link->ch_maps) return 0;
/* Identical data will be sent to all codecs in playback */ @@ -605,13 +603,9 @@ int sdw_hw_params(struct snd_pcm_substream *substream, * link has more than one codec DAIs. Set codec channel mask and * ASoC will set the corresponding channel numbers for each cpu dai. */ - for_each_rtd_cpu_dais(rtd, i, cpu_dai) { - for_each_rtd_codec_dais(rtd, j, codec_dai) { - if (rtd->dai_link->codec_ch_maps[j].connected_cpu_id != i) - continue; - rtd->dai_link->codec_ch_maps[j].ch_mask = ch_mask << (j * step); - } - } + for_each_link_ch_maps(rtd->dai_link, i, ch_maps) + ch_maps->ch_mask = ch_mask << (i * step); + return 0; }
@@ -1350,15 +1344,17 @@ static int get_slave_info(const struct snd_soc_acpi_link_adr *adr_link, return 0; }
-static void set_dailink_map(struct snd_soc_dai_link_codec_ch_map *sdw_codec_ch_maps, +static void set_dailink_map(struct snd_soc_dai_link_ch_map *sdw_codec_ch_maps, int codec_num, int cpu_num) { int step; int i;
step = codec_num / cpu_num; - for (i = 0; i < codec_num; i++) - sdw_codec_ch_maps[i].connected_cpu_id = i / step; + for (i = 0; i < codec_num; i++) { + sdw_codec_ch_maps[i].cpu = i / step; + sdw_codec_ch_maps[i].codec = i; + } }
static const char * const type_strings[] = {"SimpleJack", "SmartAmp", "SmartMic"}; @@ -1453,7 +1449,7 @@ static int create_sdw_dailink(struct snd_soc_card *card, int *link_index, *ignore_pch_dmic = true;
for_each_pcm_streams(stream) { - struct snd_soc_dai_link_codec_ch_map *sdw_codec_ch_maps; + struct snd_soc_dai_link_ch_map *sdw_codec_ch_maps; char *name, *cpu_name; int playback, capture; static const char * const sdw_stream_name[] = { @@ -1530,7 +1526,7 @@ static int create_sdw_dailink(struct snd_soc_card *card, int *link_index, dai_links[*link_index].nonatomic = true;
set_dailink_map(sdw_codec_ch_maps, codec_num, cpu_dai_num); - dai_links[*link_index].codec_ch_maps = sdw_codec_ch_maps; + dai_links[*link_index].ch_maps = sdw_codec_ch_maps; ret = set_codec_init_func(card, adr_link, dai_links + (*link_index)++, playback, group_id, adr_index, dai_index); if (ret < 0) { diff --git a/sound/soc/soc-core.c b/sound/soc/soc-core.c index b2bd45e87bc3..4ca3319a8e19 100644 --- a/sound/soc/soc-core.c +++ b/sound/soc/soc-core.c @@ -1015,6 +1015,94 @@ static int soc_dai_link_sanity_check(struct snd_soc_card *card, return -EINVAL; }
+#define MAX_DEFAULT_CH_MAP_SIZE 7 +static struct snd_soc_dai_link_ch_map default_ch_map_sync[MAX_DEFAULT_CH_MAP_SIZE] = { + { .cpu = 0, .codec = 0 }, + { .cpu = 1, .codec = 1 }, + { .cpu = 2, .codec = 2 }, + { .cpu = 3, .codec = 3 }, + { .cpu = 4, .codec = 4 }, + { .cpu = 5, .codec = 5 }, + { .cpu = 6, .codec = 6 }, +}; +static struct snd_soc_dai_link_ch_map default_ch_map_1cpu[MAX_DEFAULT_CH_MAP_SIZE] = { + { .cpu = 0, .codec = 0 }, + { .cpu = 0, .codec = 1 }, + { .cpu = 0, .codec = 2 }, + { .cpu = 0, .codec = 3 }, + { .cpu = 0, .codec = 4 }, + { .cpu = 0, .codec = 5 }, + { .cpu = 0, .codec = 6 }, +}; +static struct snd_soc_dai_link_ch_map default_ch_map_1codec[MAX_DEFAULT_CH_MAP_SIZE] = { + { .cpu = 0, .codec = 0 }, + { .cpu = 1, .codec = 0 }, + { .cpu = 2, .codec = 0 }, + { .cpu = 3, .codec = 0 }, + { .cpu = 4, .codec = 0 }, + { .cpu = 5, .codec = 0 }, + { .cpu = 6, .codec = 0 }, +}; +static int snd_soc_compensate_channel_connection_map(struct snd_soc_card *card, + struct snd_soc_dai_link *dai_link) +{ + struct snd_soc_dai_link_ch_map *ch_maps; + int i; + + /* + * dai_link->ch_maps indicates how CPU/Codec are connected. + * It will be a map seen from a larger number of DAI. + * see + * soc.h :: [dai_link->ch_maps Image sample] + */ + + /* it should have ch_maps if connection was N:M */ + if (dai_link->num_cpus > 1 && dai_link->num_codecs > 1 && + dai_link->num_cpus != dai_link->num_codecs && !dai_link->ch_maps) { + dev_err(card->dev, "need to have ch_maps when N:M connction (%s)", + dai_link->name); + return -EINVAL; + } + + /* do nothing if it has own maps */ + if (dai_link->ch_maps) + goto sanity_check; + + /* check default map size */ + if (dai_link->num_cpus > MAX_DEFAULT_CH_MAP_SIZE || + dai_link->num_codecs > MAX_DEFAULT_CH_MAP_SIZE) { + dev_err(card->dev, "soc-core.c needs update default_connection_maps"); + return -EINVAL; + } + + /* Compensate missing map for ... */ + if (dai_link->num_cpus == dai_link->num_codecs) + dai_link->ch_maps = default_ch_map_sync; /* for 1:1 or N:N */ + else if (dai_link->num_cpus < dai_link->num_codecs) + dai_link->ch_maps = default_ch_map_1cpu; /* for 1:N */ + else + dai_link->ch_maps = default_ch_map_1codec; /* for N:1 */ + +sanity_check: + dev_dbg(card->dev, "dai_link %s\n", dai_link->stream_name); + for_each_link_ch_maps(dai_link, i, ch_maps) { + if ((ch_maps->cpu >= dai_link->num_cpus) || + (ch_maps->codec >= dai_link->num_codecs)) { + dev_err(card->dev, + "unexpected dai_link->ch_maps[%d] index (cpu(%d/%d) codec(%d/%d))", + i, + ch_maps->cpu, dai_link->num_cpus, + ch_maps->codec, dai_link->num_codecs); + return -EINVAL; + } + + dev_dbg(card->dev, " [%d] cpu%d <-> codec%d\n", + i, ch_maps->cpu, ch_maps->codec); + } + + return 0; +} + /** * snd_soc_remove_pcm_runtime - Remove a pcm_runtime from card * @card: The ASoC card to which the pcm_runtime has @@ -1121,8 +1209,13 @@ int snd_soc_add_pcm_runtimes(struct snd_soc_card *card, int num_dai_link) { for (int i = 0; i < num_dai_link; i++) { - int ret = snd_soc_add_pcm_runtime(card, dai_link + i); + int ret; + + ret = snd_soc_compensate_channel_connection_map(card, dai_link + i); + if (ret < 0) + return ret;
+ ret = snd_soc_add_pcm_runtime(card, dai_link + i); if (ret < 0) return ret; } diff --git a/sound/soc/soc-dapm.c b/sound/soc/soc-dapm.c index 3844f777c87b..3d72084b6a34 100644 --- a/sound/soc/soc-dapm.c +++ b/sound/soc/soc-dapm.c @@ -4438,11 +4438,14 @@ static void soc_dapm_dai_stream_event(struct snd_soc_dai *dai, int stream, void snd_soc_dapm_connect_dai_link_widgets(struct snd_soc_card *card) { struct snd_soc_pcm_runtime *rtd; + struct snd_soc_dai *cpu_dai; struct snd_soc_dai *codec_dai; - int i;
/* for each BE DAI link... */ for_each_card_rtds(card, rtd) { + struct snd_soc_dai_link_ch_map *ch_maps; + int i; + /* * dynamic FE links have no fixed DAI mapping. * CODEC<->CODEC links have no direct connection. @@ -4450,39 +4453,15 @@ void snd_soc_dapm_connect_dai_link_widgets(struct snd_soc_card *card) if (rtd->dai_link->dynamic) continue;
- if (rtd->dai_link->num_cpus == 1) { - for_each_rtd_codec_dais(rtd, i, codec_dai) - dapm_connect_dai_pair(card, rtd, codec_dai, - snd_soc_rtd_to_cpu(rtd, 0)); - } else if (rtd->dai_link->num_codecs == rtd->dai_link->num_cpus) { - for_each_rtd_codec_dais(rtd, i, codec_dai) - dapm_connect_dai_pair(card, rtd, codec_dai, - snd_soc_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; - } + /* + * see + * soc.h :: [dai_link->ch_maps Image sample] + */ + for_each_rtd_ch_maps(rtd, i, ch_maps) { + cpu_dai = snd_soc_rtd_to_cpu(rtd, ch_maps->cpu); + codec_dai = snd_soc_rtd_to_codec(rtd, ch_maps->codec);
- 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, - snd_soc_rtd_to_cpu(rtd, cpu_id)); - } - } else { - dev_err(card->dev, - "%s: codec number %d < cpu number %d is not supported\n", - __func__, rtd->dai_link->num_codecs, rtd->dai_link->num_cpus); + dapm_connect_dai_pair(card, rtd, codec_dai, cpu_dai); } } } diff --git a/sound/soc/soc-pcm.c b/sound/soc/soc-pcm.c index 323e4d7b6adf..c20573aeb756 100644 --- a/sound/soc/soc-pcm.c +++ b/sound/soc/soc-pcm.c @@ -1050,6 +1050,7 @@ static int __soc_pcm_hw_params(struct snd_soc_pcm_runtime *rtd, }
for_each_rtd_cpu_dais(rtd, i, cpu_dai) { + struct snd_soc_dai_link_ch_map *ch_maps; unsigned int ch_mask = 0; int j;
@@ -1063,22 +1064,20 @@ static int __soc_pcm_hw_params(struct snd_soc_pcm_runtime *rtd, /* copy params for each cpu */ tmp_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. + * see + * soc.h :: [dai_link->ch_maps Image sample] */ - 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; - } + for_each_rtd_ch_maps(rtd, j, ch_maps) + if (ch_maps->cpu == i) + ch_mask |= ch_maps->ch_mask;
/* fixup cpu channel number */ if (ch_mask) soc_pcm_codec_params_fixup(&tmp_params, ch_mask);
-hw_params: ret = snd_soc_dai_hw_params(cpu_dai, substream, &tmp_params); if (ret < 0) goto out; @@ -2826,35 +2825,20 @@ static int soc_get_playback_capture(struct snd_soc_pcm_runtime *rtd, } } } else { + struct snd_soc_dai_link_ch_map *ch_maps; struct snd_soc_dai *codec_dai;
/* Adapt stream for codec2codec links */ int cpu_capture = snd_soc_get_stream_cpu(dai_link, SNDRV_PCM_STREAM_CAPTURE); int cpu_playback = snd_soc_get_stream_cpu(dai_link, SNDRV_PCM_STREAM_PLAYBACK);
- for_each_rtd_codec_dais(rtd, i, codec_dai) { - if (dai_link->num_cpus == 1) { - cpu_dai = snd_soc_rtd_to_cpu(rtd, 0); - } else if (dai_link->num_cpus == dai_link->num_codecs) { - cpu_dai = snd_soc_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 = snd_soc_rtd_to_cpu(rtd, cpu_id); - } else { - dev_err(rtd->card->dev, - "%s codec number %d < cpu number %d is not supported\n", - __func__, rtd->dai_link->num_codecs, - rtd->dai_link->num_cpus); - return -EINVAL; - } + /* + * see + * soc.h :: [dai_link->ch_maps Image sample] + */ + for_each_rtd_ch_maps(rtd, i, ch_maps) { + cpu_dai = snd_soc_rtd_to_cpu(rtd, ch_maps->cpu); + codec_dai = snd_soc_rtd_to_codec(rtd, ch_maps->codec);
if (snd_soc_dai_stream_valid(codec_dai, SNDRV_PCM_STREAM_PLAYBACK) && snd_soc_dai_stream_valid(cpu_dai, cpu_playback))