Current ASoC CPU:Codec = N:M connection is using connection mapping idea, but it is used for CPU < Codec 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. Because it will use default mapping, no conversion patch is needed to exising CPU/Codec drivers.
More over, CPU:Codec = M:N (M > N) also supported in the same time.
Link: https://lore.kernel.org/r/87fs6wuszr.wl-kuninori.morimoto.gx@renesas.com Signed-off-by: Kuninori Morimoto kuninori.morimoto.gx@renesas.com --- include/sound/soc.h | 66 +++++++++++++++++++++++-- sound/soc/intel/boards/sof_sdw.c | 14 +++--- sound/soc/soc-core.c | 85 ++++++++++++++++++++++++++++++++ sound/soc/soc-dapm.c | 47 +++++++----------- sound/soc/soc-pcm.c | 73 ++++++++++++++------------- 5 files changed, 211 insertions(+), 74 deletions(-)
diff --git a/include/sound/soc.h b/include/sound/soc.h index 63b57f58cc56..ff04ed312009 100644 --- a/include/sound/soc.h +++ b/include/sound/soc.h @@ -655,8 +655,68 @@ 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] + * + * if (num_cpus >= num_codecs) + * .ch_maps is [CPU] base + * else + * .ch_maps is [Codec] base + * + *------------------------- + * CPU0 <---> CodecX + * + * Because [num_cpus >= num_codecs] + * .ch_maps is [CPU] base + * + * .num_cpus = 1; + * .num_codecs = 1; + * .ch_maps[] = {{.connected_node = X; }}; CPU0 <-> CodecX + * + *------------------------- + * CPU0 <---> CodecX + * CPU1 <---> CodecY + * CPU2 <---> CodecZ + * + * Because [num_cpus >= num_codecs] + * .ch_maps is [CPU] base + * + * .num_cpus = 3; + * .num_codecs = 3; + * .ch_maps[] = {{.connected_node = X; }, CPU0 <-> CodecX + * {.connected_node = Y; }, CPU1 <-> CodecY + * {.connected_node = Z; }}; CPU2 <-> CodecZ + * + *------------------------- + * CPU0 <---> CodecX + * CPU1 <-+-> CodecY + * CPU2 <-/ + * + * Because [num_cpus >= num_codecs] + * .ch_maps is [CPU] base + * + * .num_cpus = 3; + * .num_codecs = 2; + * .ch_maps[] = {{.connected_node = X; }, CPU0 <-> CodecX + * {.connected_node = Y; }, CPU1 <-> CodecY + * {.connected_node = Y; }}; CPU2 <-> CodecY + * + *------------------------- + * CPU_X <---> Codec0 + * CPU_Y <-+-> Codec1 + * -> Codec2 + * + * Because [num_cpus < num_codecs] + * .ch_maps is [Codec] base + * + * .num_cpus = 2; + * .num_codecs = 3; + * .ch_maps[] = {{.connected_node = X; }, Codec0 <-> CPU_X + * {.connected_node = Y; }, Codec1 <-> CPU_Y + * {.connected_node = Y; }}; Codec2 <-> CPU_Y + */ +struct snd_soc_dai_link_ch_map { + unsigned int connected_node; unsigned int ch_mask; };
@@ -688,7 +748,7 @@ 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; + 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 diff --git a/sound/soc/intel/boards/sof_sdw.c b/sound/soc/intel/boards/sof_sdw.c index 226a74a4c340..7927b729866d 100644 --- a/sound/soc/intel/boards/sof_sdw.c +++ b/sound/soc/intel/boards/sof_sdw.c @@ -579,7 +579,7 @@ int sdw_hw_params(struct snd_pcm_substream *substream, 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 */ @@ -607,9 +607,9 @@ int sdw_hw_params(struct snd_pcm_substream *substream, */ 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) + if (rtd->dai_link->ch_maps[j].connected_node != i) continue; - rtd->dai_link->codec_ch_maps[j].ch_mask = ch_mask << (j * step); + rtd->dai_link->ch_maps[j].ch_mask = ch_mask << (j * step); } } return 0; @@ -1350,7 +1350,7 @@ 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; @@ -1358,7 +1358,7 @@ static void set_dailink_map(struct snd_soc_dai_link_codec_ch_map *sdw_codec_ch_m
step = codec_num / cpu_num; for (i = 0; i < codec_num; i++) - sdw_codec_ch_maps[i].connected_cpu_id = i / step; + sdw_codec_ch_maps[i].connected_node = i / step; }
static const char * const type_strings[] = {"SimpleJack", "SmartAmp", "SmartMic"}; @@ -1453,7 +1453,7 @@ 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 +1530,7 @@ 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 c305e94762c3..07fdcb997ab4 100644 --- a/sound/soc/soc-core.c +++ b/sound/soc/soc-core.c @@ -1824,6 +1824,86 @@ int snd_soc_set_dmi_name(struct snd_soc_card *card, const char *flavour) EXPORT_SYMBOL_GPL(snd_soc_set_dmi_name); #endif /* CONFIG_DMI */
+#define MAX_DEFAULT_CONNECTION_MAP_SIZE 7 +static struct snd_soc_dai_link_ch_map default_connection_map1[MAX_DEFAULT_CONNECTION_MAP_SIZE] = { + { .connected_node = 0 }, + { .connected_node = 1 }, + { .connected_node = 2 }, + { .connected_node = 3 }, + { .connected_node = 4 }, + { .connected_node = 5 }, + { .connected_node = 6 }, +}; +static struct snd_soc_dai_link_ch_map default_connection_map2[MAX_DEFAULT_CONNECTION_MAP_SIZE] = { + { .connected_node = 0 }, + { .connected_node = 0 }, + { .connected_node = 0 }, + { .connected_node = 0 }, + { .connected_node = 0 }, + { .connected_node = 0 }, + { .connected_node = 0 }, +}; + +static int snd_soc_compensate_connection_map(struct snd_soc_card *card) +{ + struct snd_soc_dai_link *dai_link; + int i, j, n, max; + + /* + * 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] + */ + for_each_card_prelinks(card, i, dai_link) { + + /* 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_CONNECTION_MAP_SIZE || + dai_link->num_codecs > MAX_DEFAULT_CONNECTION_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_connection_map1; /* for 1:1 or N:N */ + else + dai_link->ch_maps = default_connection_map2; /* for 1:N or N:1 */ + +sanity_check: + if (dai_link->num_cpus >= dai_link->num_codecs) { + n = dai_link->num_cpus; + max = dai_link->num_codecs; + } else { + n = dai_link->num_codecs; + max = dai_link->num_cpus; + } + + for (j = 0; j < n; j++) + if (dai_link->ch_maps[j].connected_node >= max) { + dev_err(card->dev, + "dai_link->ch_maps[%d].connected_node (= %d) is " + "larger than max (= %d)", + j, dai_link->ch_maps[j].connected_node, max); + return -EINVAL; + } + } + + return 0; +} + static void soc_check_tplg_fes(struct snd_soc_card *card) { struct snd_soc_component *component; @@ -2030,6 +2110,11 @@ static int snd_soc_bind_card(struct snd_soc_card *card)
snd_soc_dapm_init(&card->dapm, card, NULL);
+ /* for keeping compatibility */ + ret = snd_soc_compensate_connection_map(card); + if (ret < 0) + goto probe_end; + /* check whether any platform is ignore machine FE and using topology */ soc_check_tplg_fes(card);
diff --git a/sound/soc/soc-dapm.c b/sound/soc/soc-dapm.c index 2512aadf95f7..3c7c2b16bd64 100644 --- a/sound/soc/soc-dapm.c +++ b/sound/soc/soc-dapm.c @@ -4426,6 +4426,7 @@ 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;
@@ -4438,39 +4439,25 @@ 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] + */ + /* .ch_map is from CPU */ + if (rtd->dai_link->num_cpus >= rtd->dai_link->num_codecs) { + for_each_rtd_cpu_dais(rtd, i, cpu_dai) { + codec_dai = snd_soc_rtd_to_codec(rtd, rtd->dai_link->ch_maps[i].connected_node);
+ dapm_connect_dai_pair(card, rtd, codec_dai, cpu_dai); + } + } + /* .ch_map is from Codec */ + else { 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)); + cpu_dai = snd_soc_rtd_to_cpu(rtd, rtd->dai_link->ch_maps[i].connected_node); + + dapm_connect_dai_pair(card, rtd, codec_dai, cpu_dai); } - } 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); } } } diff --git a/sound/soc/soc-pcm.c b/sound/soc/soc-pcm.c index 8c168dc553f6..0bfff2ea111d 100644 --- a/sound/soc/soc-pcm.c +++ b/sound/soc/soc-pcm.c @@ -1043,7 +1043,6 @@ static int __soc_pcm_hw_params(struct snd_soc_pcm_runtime *rtd,
for_each_rtd_cpu_dais(rtd, i, cpu_dai) { unsigned int ch_mask = 0; - int j;
/* * Skip CPUs which don't support the current stream @@ -1055,22 +1054,28 @@ 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; + if (rtd->dai_link->num_cpus >= rtd->dai_link->num_codecs) { + /* .ch_map is from CPU */ + ch_mask = rtd->dai_link->ch_maps[i].ch_mask; + } else { + int j; + + /* .ch_map is from Codec */ + for_each_rtd_codec_dais(rtd, j, codec_dai) + if (rtd->dai_link->ch_maps[j].connected_node == i) + ch_mask |= rtd->dai_link->ch_maps[j].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; @@ -2824,36 +2829,36 @@ static int soc_get_playback_capture(struct snd_soc_pcm_runtime *rtd, 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; - } + /* + * see + * soc.h :: [dai_link->ch_maps Image sample] + */ + /* .ch_map is from CPU */ + if (dai_link->num_cpus >= dai_link->num_codecs) { + for_each_rtd_cpu_dais(rtd, i, cpu_dai) { + codec_dai = snd_soc_rtd_to_codec(rtd, dai_link->ch_maps[i].connected_node);
- 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; + if (snd_soc_dai_stream_valid(codec_dai, SNDRV_PCM_STREAM_PLAYBACK) && + snd_soc_dai_stream_valid(cpu_dai, cpu_playback)) + has_playback = 1; + if (snd_soc_dai_stream_valid(codec_dai, SNDRV_PCM_STREAM_CAPTURE) && + snd_soc_dai_stream_valid(cpu_dai, cpu_capture)) + has_capture = 1; } + } + /* .ch_map is from Codec */ + else { + for_each_rtd_codec_dais(rtd, i, codec_dai) { + cpu_dai = snd_soc_rtd_to_cpu(rtd, dai_link->ch_maps[i].connected_node); + + if (snd_soc_dai_stream_valid(codec_dai, SNDRV_PCM_STREAM_PLAYBACK) && + snd_soc_dai_stream_valid(cpu_dai, cpu_playback)) + has_playback = 1; + if (snd_soc_dai_stream_valid(codec_dai, SNDRV_PCM_STREAM_CAPTURE) && + snd_soc_dai_stream_valid(cpu_dai, cpu_capture)) + has_capture = 1;
- if (snd_soc_dai_stream_valid(codec_dai, SNDRV_PCM_STREAM_PLAYBACK) && - snd_soc_dai_stream_valid(cpu_dai, cpu_playback)) - has_playback = 1; - if (snd_soc_dai_stream_valid(codec_dai, SNDRV_PCM_STREAM_CAPTURE) && - snd_soc_dai_stream_valid(cpu_dai, cpu_capture)) - has_capture = 1; + } } }