From 14c9c9eb4350320d5741cc4ad88c0ca01e624849 Mon Sep 17 00:00:00 2001 From: Shreyas NC Date: Tue, 17 Dec 2019 16:06:14 +0800 Subject: [PATCH 1/6] ASoC: Add initial support for multiple CPU DAIs ASoC core supports multiple codec DAIs but supports only a CPU DAI. To support multiple cpu DAIs, add cpu_dai and num_cpu_dai in snd_soc_dai_link and snd_soc_pcm_runtime structures similar to support for codec_dai. This is intended as a preparatory patch to eventually support the unification of the Codec and CPU DAI. Inline with multiple codec DAI approach, add support to allocate, init, bind and probe multiple cpu_dai on init if driver specifies that. Also add support to loop over multiple cpu_dai during suspend and resume. This is intended as a preparatory patch to eventually unify the CPU and Codec DAI into DAI components. Signed-off-by: Shreyas NC Signed-off-by: Kuninori Morimoto Signed-off-by: Bard Liao --- include/sound/soc.h | 15 ++++ sound/soc/soc-core.c | 205 ++++++++++++++++++++++++------------------- 2 files changed, 129 insertions(+), 91 deletions(-) diff --git a/include/sound/soc.h b/include/sound/soc.h index f0e4f36f83bfa7..4163f5e0612623 100644 --- a/include/sound/soc.h +++ b/include/sound/soc.h @@ -855,6 +855,11 @@ struct snd_soc_dai_link { ((platform) = &link->platforms[i]); \ (i)++) +#define for_each_link_cpus(link, i, cpu) \ + for ((i) = 0; \ + ((i) < link->num_cpus) && ((cpu) = &link->cpus[i]); \ + (i)++) + /* * Sample 1 : Single CPU/Codec/Platform * @@ -1132,6 +1137,9 @@ struct snd_soc_pcm_runtime { struct snd_soc_dai **codec_dais; unsigned int num_codecs; + struct snd_soc_dai **cpu_dais; + unsigned int num_cpus; + struct delayed_work delayed_work; void (*close_delayed_work_func)(struct snd_soc_pcm_runtime *rtd); #ifdef CONFIG_DEBUG_FS @@ -1159,6 +1167,13 @@ struct snd_soc_pcm_runtime { #define for_each_rtd_codec_dai_rollback(rtd, i, dai) \ for (; ((--i) >= 0) && ((dai) = rtd->codec_dais[i]);) +#define for_each_rtd_cpu_dai(rtd, i, dai)\ + for ((i) = 0; \ + ((i) < rtd->num_cpus) && ((dai) = rtd->cpu_dais[i]); \ + (i)++) +#define for_each_rtd_cpu_dai_rollback(rtd, i, dai) \ + for (; ((--i) >= 0) && ((dai) = rtd->cpu_dais[i]);) + void snd_soc_close_delayed_work(struct snd_soc_pcm_runtime *rtd); /* mixer control */ diff --git a/sound/soc/soc-core.c b/sound/soc/soc-core.c index acf6f141fd2deb..ac3d1650c913ae 100644 --- a/sound/soc/soc-core.c +++ b/sound/soc/soc-core.c @@ -483,6 +483,14 @@ static struct snd_soc_pcm_runtime *soc_new_pcm_runtime( if (!rtd->codec_dais) goto free_rtd; + /* + * for rtd->cpu_dais + */ + rtd->cpu_dais = devm_kcalloc(dev, dai_link->num_cpus, + sizeof(struct snd_soc_dai *), + GFP_KERNEL); + if (!rtd->cpu_dais) + goto free_rtd; /* * rtd remaining settings */ @@ -559,13 +567,15 @@ int snd_soc_suspend(struct device *dev) card->suspend_pre(card); for_each_card_rtds(card, rtd) { - struct snd_soc_dai *cpu_dai = rtd->cpu_dai; + struct snd_soc_dai *cpu_dai; if (rtd->dai_link->ignore_suspend) continue; - if (!cpu_dai->driver->bus_control) - snd_soc_dai_suspend(cpu_dai); + for_each_rtd_cpu_dai(rtd, i, cpu_dai) { + if (!cpu_dai->driver->bus_control) + snd_soc_dai_suspend(cpu_dai); + } } /* close any waiting streams */ @@ -640,13 +650,14 @@ int snd_soc_suspend(struct device *dev) } for_each_card_rtds(card, rtd) { - struct snd_soc_dai *cpu_dai = rtd->cpu_dai; + struct snd_soc_dai *cpu_dai; if (rtd->dai_link->ignore_suspend) continue; - if (cpu_dai->driver->bus_control) - snd_soc_dai_suspend(cpu_dai); + for_each_rtd_cpu_dai(rtd, i, cpu_dai) + if (cpu_dai->driver->bus_control) + snd_soc_dai_suspend(cpu_dai); } if (card->suspend_post) @@ -684,13 +695,15 @@ static void soc_resume_deferred(struct work_struct *work) /* resume control bus DAIs */ for_each_card_rtds(card, rtd) { - struct snd_soc_dai *cpu_dai = rtd->cpu_dai; + struct snd_soc_dai *cpu_dai; if (rtd->dai_link->ignore_suspend) continue; - if (cpu_dai->driver->bus_control) - snd_soc_dai_resume(cpu_dai); + for_each_rtd_cpu_dai(rtd, i, cpu_dai) { + if (cpu_dai->driver->bus_control) + snd_soc_dai_resume(cpu_dai); + } } for_each_card_components(card, component) { @@ -727,13 +740,15 @@ static void soc_resume_deferred(struct work_struct *work) } for_each_card_rtds(card, rtd) { - struct snd_soc_dai *cpu_dai = rtd->cpu_dai; + struct snd_soc_dai *cpu_dai; if (rtd->dai_link->ignore_suspend) continue; - if (!cpu_dai->driver->bus_control) - snd_soc_dai_resume(cpu_dai); + for_each_rtd_cpu_dai(rtd, i, cpu_dai) { + if (!cpu_dai->driver->bus_control) + snd_soc_dai_resume(cpu_dai); + } } if (card->resume_post) @@ -773,9 +788,11 @@ int snd_soc_resume(struct device *dev) * due to I/O costs and anti-pop so handle them out of line. */ for_each_card_rtds(card, rtd) { - struct snd_soc_dai *cpu_dai = rtd->cpu_dai; + struct snd_soc_dai *cpu_dai; + int i; - bus_control |= cpu_dai->driver->bus_control; + for_each_rtd_cpu_dai(rtd, i, cpu_dai) + bus_control |= cpu_dai->driver->bus_control; } if (bus_control) { dev_dbg(dev, "ASoC: Resuming control bus master immediately\n"); @@ -900,7 +917,7 @@ static int soc_dai_link_sanity_check(struct snd_soc_card *card, struct snd_soc_dai_link *link) { int i; - struct snd_soc_dai_link_component *codec, *platform; + struct snd_soc_dai_link_component *cpu, *codec, *platform; for_each_link_codecs(link, i, codec) { /* @@ -949,44 +966,38 @@ static int soc_dai_link_sanity_check(struct snd_soc_card *card, return -EPROBE_DEFER; } - /* FIXME */ - if (link->num_cpus > 1) { - dev_err(card->dev, - "ASoC: multi cpu is not yet supported %s\n", - link->name); - return -EINVAL; - } - - /* - * CPU device may be specified by either name or OF node, but - * can be left unspecified, and will be matched based on DAI - * name alone.. - */ - if (link->cpus->name && link->cpus->of_node) { - dev_err(card->dev, - "ASoC: Neither/both cpu name/of_node are set for %s\n", - link->name); - return -EINVAL; - } + for_each_link_cpus(link, i, cpu) { + /* + * CPU device may be specified by either name or OF node, but + * can be left unspecified, and will be matched based on DAI + * name alone.. + */ + if (cpu->name && cpu->of_node) { + dev_err(card->dev, + "ASoC: Neither/both cpu name/of_node are set for %s\n", + link->name); + return -EINVAL; + } - /* - * Defer card registration if cpu dai component is not added to - * component list. - */ - if ((link->cpus->of_node || link->cpus->name) && - !soc_find_component(link->cpus)) - return -EPROBE_DEFER; + /* + * Defer card registration if cpu dai component is not added to + * component list. + */ + if ((cpu->of_node || cpu->name) && + !soc_find_component(cpu)) + return -EPROBE_DEFER; - /* - * At least one of CPU DAI name or CPU device name/node must be - * specified - */ - if (!link->cpus->dai_name && - !(link->cpus->name || link->cpus->of_node)) { - dev_err(card->dev, - "ASoC: Neither cpu_dai_name nor cpu_name/of_node are set for %s\n", - link->name); - return -EINVAL; + /* + * At least one of CPU DAI name or CPU device name/node must be + * specified + */ + if (!cpu->dai_name && + !(cpu->name || cpu->of_node)) { + dev_err(card->dev, + "ASoC: Neither cpu_dai_name nor cpu_name/of_node are set for %s\n", + link->name); + return -EINVAL; + } } return 0; @@ -1029,7 +1040,7 @@ int snd_soc_add_pcm_runtime(struct snd_soc_card *card, struct snd_soc_dai_link *dai_link) { struct snd_soc_pcm_runtime *rtd; - struct snd_soc_dai_link_component *codec, *platform; + struct snd_soc_dai_link_component *codec, *platform, *cpu; struct snd_soc_component *component; int i, ret; @@ -1054,14 +1065,19 @@ int snd_soc_add_pcm_runtime(struct snd_soc_card *card, if (!rtd) return -ENOMEM; - /* FIXME: we need multi CPU support in the future */ - rtd->cpu_dai = snd_soc_find_dai(dai_link->cpus); - if (!rtd->cpu_dai) { - dev_info(card->dev, "ASoC: CPU DAI %s not registered\n", - dai_link->cpus->dai_name); - goto _err_defer; + rtd->num_cpus = dai_link->num_cpus; + for_each_link_cpus(dai_link, i, cpu) { + rtd->cpu_dais[i] = snd_soc_find_dai(cpu); + if (!rtd->cpu_dais[i]) { + dev_info(card->dev, "ASoC: CPU DAI %s not registered\n", + cpu->dai_name); + goto _err_defer; + } + snd_soc_rtd_add_component(rtd, rtd->cpu_dais[i]->component); } - snd_soc_rtd_add_component(rtd, rtd->cpu_dai->component); + + /* Single cpu links expect cpu and cpu_dai in runtime data */ + rtd->cpu_dai = rtd->cpu_dais[0]; /* Find CODEC from registered CODECs */ rtd->num_codecs = dai_link->num_codecs; @@ -1181,7 +1197,8 @@ static int soc_init_pcm_runtime(struct snd_soc_card *card, dai_link->stream_name, ret); return ret; } - ret = soc_dai_pcm_new(&cpu_dai, 1, rtd); + ret = soc_dai_pcm_new(rtd->cpu_dais, + rtd->num_cpus, rtd); if (ret < 0) return ret; ret = soc_dai_pcm_new(rtd->codec_dais, @@ -1373,6 +1390,7 @@ static void soc_remove_link_dais(struct snd_soc_card *card) { int i; struct snd_soc_dai *codec_dai; + struct snd_soc_dai *cpu_dai; struct snd_soc_pcm_runtime *rtd; int order; @@ -1382,14 +1400,15 @@ static void soc_remove_link_dais(struct snd_soc_card *card) for_each_rtd_codec_dai(rtd, i, codec_dai) soc_remove_dai(codec_dai, order); - soc_remove_dai(rtd->cpu_dai, order); + for_each_rtd_cpu_dai(rtd, i, cpu_dai) + soc_remove_dai(cpu_dai, order); } } } static int soc_probe_link_dais(struct snd_soc_card *card) { - struct snd_soc_dai *codec_dai; + struct snd_soc_dai *codec_dai, *cpu_dai; struct snd_soc_pcm_runtime *rtd; int i, order, ret; @@ -1400,9 +1419,12 @@ static int soc_probe_link_dais(struct snd_soc_card *card) "ASoC: probe %s dai link %d late %d\n", card->name, rtd->num, order); - ret = soc_probe_dai(rtd->cpu_dai, order); - if (ret) - return ret; + /* probe the CPU DAI */ + for_each_rtd_cpu_dai(rtd, i, cpu_dai) { + ret = soc_probe_dai(cpu_dai, order); + if (ret) + return ret; + } /* probe the CODEC DAI */ for_each_rtd_codec_dai(rtd, i, codec_dai) { @@ -1534,8 +1556,9 @@ static void soc_remove_aux_devices(struct snd_soc_card *card) int snd_soc_runtime_set_dai_fmt(struct snd_soc_pcm_runtime *rtd, unsigned int dai_fmt) { - struct snd_soc_dai *cpu_dai = rtd->cpu_dai; + struct snd_soc_dai *cpu_dai; struct snd_soc_dai *codec_dai; + unsigned int inv_dai_fmt; unsigned int i; int ret; @@ -1552,33 +1575,33 @@ int snd_soc_runtime_set_dai_fmt(struct snd_soc_pcm_runtime *rtd, * Flip the polarity for the "CPU" end of a CODEC<->CODEC link * the component which has non_legacy_dai_naming is Codec */ - if (cpu_dai->component->driver->non_legacy_dai_naming) { - unsigned int inv_dai_fmt; - - inv_dai_fmt = dai_fmt & ~SND_SOC_DAIFMT_MASTER_MASK; - switch (dai_fmt & SND_SOC_DAIFMT_MASTER_MASK) { - case SND_SOC_DAIFMT_CBM_CFM: - inv_dai_fmt |= SND_SOC_DAIFMT_CBS_CFS; - break; - case SND_SOC_DAIFMT_CBM_CFS: - inv_dai_fmt |= SND_SOC_DAIFMT_CBS_CFM; - break; - case SND_SOC_DAIFMT_CBS_CFM: - inv_dai_fmt |= SND_SOC_DAIFMT_CBM_CFS; - break; - case SND_SOC_DAIFMT_CBS_CFS: - inv_dai_fmt |= SND_SOC_DAIFMT_CBM_CFM; - break; - } - - dai_fmt = inv_dai_fmt; + inv_dai_fmt = dai_fmt & ~SND_SOC_DAIFMT_MASTER_MASK; + switch (dai_fmt & SND_SOC_DAIFMT_MASTER_MASK) { + case SND_SOC_DAIFMT_CBM_CFM: + inv_dai_fmt |= SND_SOC_DAIFMT_CBS_CFS; + break; + case SND_SOC_DAIFMT_CBM_CFS: + inv_dai_fmt |= SND_SOC_DAIFMT_CBS_CFM; + break; + case SND_SOC_DAIFMT_CBS_CFM: + inv_dai_fmt |= SND_SOC_DAIFMT_CBM_CFS; + break; + case SND_SOC_DAIFMT_CBS_CFS: + inv_dai_fmt |= SND_SOC_DAIFMT_CBM_CFM; + break; } + for_each_rtd_cpu_dai(rtd, i, cpu_dai) { + unsigned int fmt = dai_fmt; - ret = snd_soc_dai_set_fmt(cpu_dai, dai_fmt); - if (ret != 0 && ret != -ENOTSUPP) { - dev_warn(cpu_dai->dev, - "ASoC: Failed to set DAI format: %d\n", ret); - return ret; + if (cpu_dai->component->driver->non_legacy_dai_naming) + fmt = inv_dai_fmt; + + ret = snd_soc_dai_set_fmt(cpu_dai, fmt); + if (ret != 0 && ret != -ENOTSUPP) { + dev_warn(cpu_dai->dev, + "ASoC: Failed to set DAI format: %d\n", ret); + return ret; + } } return 0; From 81fa54a120e59a42a4036be439450b0b0619239e Mon Sep 17 00:00:00 2001 From: Shreyas NC Date: Mon, 20 Jan 2020 20:19:42 +0800 Subject: [PATCH 2/6] ASoC: Add multiple CPU DAI support for PCM ops Add support in PCM operations to invoke multiple cpu dais as we do for multiple codec dais. Also the symmetry calculations are updated to reflect multiple cpu dais. Signed-off-by: Vinod Koul Signed-off-by: Shreyas NC Signed-off-by: Kuninori Morimoto Signed-off-by: Bard Liao --- sound/soc/soc-pcm.c | 487 +++++++++++++++++++++++++++++--------------- 1 file changed, 322 insertions(+), 165 deletions(-) diff --git a/sound/soc/soc-pcm.c b/sound/soc/soc-pcm.c index 74d340d1c9f779..bdc918576cf609 100644 --- a/sound/soc/soc-pcm.c +++ b/sound/soc/soc-pcm.c @@ -40,24 +40,28 @@ */ void snd_soc_runtime_activate(struct snd_soc_pcm_runtime *rtd, int stream) { - struct snd_soc_dai *cpu_dai = rtd->cpu_dai; + struct snd_soc_dai *cpu_dai; struct snd_soc_dai *codec_dai; int i; lockdep_assert_held(&rtd->card->pcm_mutex); if (stream == SNDRV_PCM_STREAM_PLAYBACK) { - cpu_dai->playback_active++; + for_each_rtd_cpu_dai(rtd, i, cpu_dai) + cpu_dai->playback_active++; for_each_rtd_codec_dai(rtd, i, codec_dai) codec_dai->playback_active++; } else { - cpu_dai->capture_active++; + for_each_rtd_cpu_dai(rtd, i, cpu_dai) + cpu_dai->capture_active++; for_each_rtd_codec_dai(rtd, i, codec_dai) codec_dai->capture_active++; } - cpu_dai->active++; - cpu_dai->component->active++; + for_each_rtd_cpu_dai(rtd, i, cpu_dai) { + cpu_dai->active++; + cpu_dai->component->active++; + } for_each_rtd_codec_dai(rtd, i, codec_dai) { codec_dai->active++; codec_dai->component->active++; @@ -76,24 +80,28 @@ void snd_soc_runtime_activate(struct snd_soc_pcm_runtime *rtd, int stream) */ void snd_soc_runtime_deactivate(struct snd_soc_pcm_runtime *rtd, int stream) { - struct snd_soc_dai *cpu_dai = rtd->cpu_dai; + struct snd_soc_dai *cpu_dai; struct snd_soc_dai *codec_dai; int i; lockdep_assert_held(&rtd->card->pcm_mutex); if (stream == SNDRV_PCM_STREAM_PLAYBACK) { - cpu_dai->playback_active--; + for_each_rtd_cpu_dai(rtd, i, cpu_dai) + cpu_dai->playback_active--; for_each_rtd_codec_dai(rtd, i, codec_dai) codec_dai->playback_active--; } else { - cpu_dai->capture_active--; + for_each_rtd_cpu_dai(rtd, i, cpu_dai) + cpu_dai->capture_active--; for_each_rtd_codec_dai(rtd, i, codec_dai) codec_dai->capture_active--; } - cpu_dai->active--; - cpu_dai->component->active--; + for_each_rtd_cpu_dai(rtd, i, cpu_dai) { + cpu_dai->active--; + cpu_dai->component->active--; + } for_each_rtd_codec_dai(rtd, i, codec_dai) { codec_dai->component->active--; codec_dai->active--; @@ -233,7 +241,7 @@ static int soc_pcm_params_symmetry(struct snd_pcm_substream *substream, struct snd_pcm_hw_params *params) { struct snd_soc_pcm_runtime *rtd = substream->private_data; - struct snd_soc_dai *cpu_dai = rtd->cpu_dai; + struct snd_soc_dai *cpu_dai; struct snd_soc_dai *codec_dai; unsigned int rate, channels, sample_bits, symmetry, i; @@ -242,40 +250,60 @@ static int soc_pcm_params_symmetry(struct snd_pcm_substream *substream, sample_bits = snd_pcm_format_physical_width(params_format(params)); /* reject unmatched parameters when applying symmetry */ - symmetry = cpu_dai->driver->symmetric_rates || - rtd->dai_link->symmetric_rates; + symmetry = rtd->dai_link->symmetric_rates; + + for_each_rtd_cpu_dai(rtd, i, cpu_dai) + symmetry |= cpu_dai->driver->symmetric_rates; for_each_rtd_codec_dai(rtd, i, codec_dai) symmetry |= codec_dai->driver->symmetric_rates; - if (symmetry && cpu_dai->rate && cpu_dai->rate != rate) { - dev_err(rtd->dev, "ASoC: unmatched rate symmetry: %d - %d\n", - cpu_dai->rate, rate); - return -EINVAL; + if (symmetry) { + for_each_rtd_cpu_dai(rtd, i, cpu_dai) { + if (cpu_dai->rate && cpu_dai->rate != rate) { + dev_err(rtd->dev, "ASoC: unmatched rate symmetry: %d - %d\n", + cpu_dai->rate, rate); + return -EINVAL; + } + } } - symmetry = cpu_dai->driver->symmetric_channels || - rtd->dai_link->symmetric_channels; + symmetry = rtd->dai_link->symmetric_channels; + + for_each_rtd_cpu_dai(rtd, i, cpu_dai) + symmetry |= cpu_dai->driver->symmetric_channels; for_each_rtd_codec_dai(rtd, i, codec_dai) symmetry |= codec_dai->driver->symmetric_channels; - if (symmetry && cpu_dai->channels && cpu_dai->channels != channels) { - dev_err(rtd->dev, "ASoC: unmatched channel symmetry: %d - %d\n", - cpu_dai->channels, channels); - return -EINVAL; + if (symmetry) { + for_each_rtd_cpu_dai(rtd, i, cpu_dai) { + if (cpu_dai->channels && + cpu_dai->channels != channels) { + dev_err(rtd->dev, "ASoC: unmatched channel symmetry: %d - %d\n", + cpu_dai->channels, channels); + return -EINVAL; + } + } } - symmetry = cpu_dai->driver->symmetric_samplebits || - rtd->dai_link->symmetric_samplebits; + symmetry = rtd->dai_link->symmetric_samplebits; + + for_each_rtd_cpu_dai(rtd, i, cpu_dai) + symmetry |= cpu_dai->driver->symmetric_samplebits; for_each_rtd_codec_dai(rtd, i, codec_dai) symmetry |= codec_dai->driver->symmetric_samplebits; - if (symmetry && cpu_dai->sample_bits && cpu_dai->sample_bits != sample_bits) { - dev_err(rtd->dev, "ASoC: unmatched sample bits symmetry: %d - %d\n", - cpu_dai->sample_bits, sample_bits); - return -EINVAL; + if (symmetry) { + for_each_rtd_cpu_dai(rtd, i, cpu_dai) { + if (cpu_dai->sample_bits && + cpu_dai->sample_bits != sample_bits) { + dev_err(rtd->dev, "ASoC: unmatched sample bits symmetry: %d - %d\n", + cpu_dai->sample_bits, sample_bits); + return -EINVAL; + } + } } return 0; @@ -284,14 +312,20 @@ static int soc_pcm_params_symmetry(struct snd_pcm_substream *substream, static bool soc_pcm_has_symmetry(struct snd_pcm_substream *substream) { struct snd_soc_pcm_runtime *rtd = substream->private_data; - struct snd_soc_dai_driver *cpu_driver = rtd->cpu_dai->driver; struct snd_soc_dai_link *link = rtd->dai_link; struct snd_soc_dai *codec_dai; + struct snd_soc_dai *cpu_dai; unsigned int symmetry, i; - symmetry = cpu_driver->symmetric_rates || link->symmetric_rates || - cpu_driver->symmetric_channels || link->symmetric_channels || - cpu_driver->symmetric_samplebits || link->symmetric_samplebits; + symmetry = link->symmetric_rates || + link->symmetric_channels || + link->symmetric_samplebits; + + for_each_rtd_cpu_dai(rtd, i, cpu_dai) + symmetry = symmetry || + cpu_dai->driver->symmetric_rates || + cpu_dai->driver->symmetric_channels || + cpu_dai->driver->symmetric_samplebits; for_each_rtd_codec_dai(rtd, i, codec_dai) symmetry = symmetry || @@ -319,10 +353,10 @@ static void soc_pcm_set_msb(struct snd_pcm_substream *substream, int bits) static void soc_pcm_apply_msb(struct snd_pcm_substream *substream) { struct snd_soc_pcm_runtime *rtd = substream->private_data; - struct snd_soc_dai *cpu_dai = rtd->cpu_dai; + struct snd_soc_dai *cpu_dai; struct snd_soc_dai *codec_dai; int i; - unsigned int bits = 0, cpu_bits; + unsigned int bits = 0, cpu_bits = 0; if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) { for_each_rtd_codec_dai(rtd, i, codec_dai) { @@ -332,7 +366,14 @@ static void soc_pcm_apply_msb(struct snd_pcm_substream *substream) } bits = max(codec_dai->driver->playback.sig_bits, bits); } - cpu_bits = cpu_dai->driver->playback.sig_bits; + for_each_rtd_cpu_dai(rtd, i, cpu_dai) { + if (cpu_dai->driver->playback.sig_bits == 0) { + cpu_bits = 0; + break; + } + cpu_bits = max(cpu_dai->driver->playback.sig_bits, + cpu_bits); + } } else { for_each_rtd_codec_dai(rtd, i, codec_dai) { if (codec_dai->driver->capture.sig_bits == 0) { @@ -341,7 +382,14 @@ static void soc_pcm_apply_msb(struct snd_pcm_substream *substream) } bits = max(codec_dai->driver->capture.sig_bits, bits); } - cpu_bits = cpu_dai->driver->capture.sig_bits; + for_each_rtd_cpu_dai(rtd, i, cpu_dai) { + if (cpu_dai->driver->capture.sig_bits == 0) { + cpu_bits = 0; + break; + } + cpu_bits = max(cpu_dai->driver->capture.sig_bits, + cpu_bits); + } } soc_pcm_set_msb(substream, bits); @@ -354,22 +402,36 @@ static void soc_pcm_init_runtime_hw(struct snd_pcm_substream *substream) struct snd_pcm_hardware *hw = &runtime->hw; struct snd_soc_pcm_runtime *rtd = substream->private_data; struct snd_soc_dai *codec_dai; - struct snd_soc_dai_driver *cpu_dai_drv = rtd->cpu_dai->driver; + struct snd_soc_dai *cpu_dai; + struct snd_soc_dai_driver *cpu_dai_drv; struct snd_soc_dai_driver *codec_dai_drv; struct snd_soc_pcm_stream *codec_stream; struct snd_soc_pcm_stream *cpu_stream; unsigned int chan_min = 0, chan_max = UINT_MAX; + unsigned int cpu_chan_min = 0, cpu_chan_max = UINT_MAX; unsigned int rate_min = 0, rate_max = UINT_MAX; - unsigned int rates = UINT_MAX; + unsigned int cpu_rate_min = 0, cpu_rate_max = UINT_MAX; + unsigned int rates = UINT_MAX, cpu_rates = UINT_MAX; u64 formats = ULLONG_MAX; int i; - if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) - cpu_stream = &cpu_dai_drv->playback; - else - cpu_stream = &cpu_dai_drv->capture; + /* first calculate min/max only for CPUs in the DAI link */ + for_each_rtd_cpu_dai(rtd, i, cpu_dai) { + cpu_dai_drv = cpu_dai->driver; + if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) + cpu_stream = &cpu_dai_drv->playback; + else + cpu_stream = &cpu_dai_drv->capture; + cpu_chan_min = max(cpu_chan_min, cpu_stream->channels_min); + cpu_chan_max = min(cpu_chan_max, cpu_stream->channels_max); + cpu_rate_min = max(cpu_rate_min, cpu_stream->rate_min); + cpu_rate_max = min_not_zero(cpu_rate_max, cpu_stream->rate_max); + formats &= cpu_stream->formats; + cpu_rates = snd_pcm_rate_mask_intersect(cpu_stream->rates, + cpu_rates); + } - /* first calculate min/max only for CODECs in the DAI link */ + /* second calculate min/max only for CODECs in the DAI link */ for_each_rtd_codec_dai(rtd, i, codec_dai) { /* @@ -400,27 +462,28 @@ static void soc_pcm_init_runtime_hw(struct snd_pcm_substream *substream) /* * chan min/max cannot be enforced if there are multiple CODEC DAIs - * connected to a single CPU DAI, use CPU DAI's directly and let + * connected to CPU DAI(s), use CPU DAI's directly and let * channel allocation be fixed up later */ if (rtd->num_codecs > 1) { - chan_min = cpu_stream->channels_min; - chan_max = cpu_stream->channels_max; + chan_min = cpu_chan_min; + chan_max = cpu_chan_max; } - hw->channels_min = max(chan_min, cpu_stream->channels_min); - hw->channels_max = min(chan_max, cpu_stream->channels_max); + /* finally find a intersection between CODECs and CPUs */ + hw->channels_min = max(chan_min, cpu_chan_min); + hw->channels_max = min(chan_max, cpu_chan_max); if (hw->formats) - hw->formats &= formats & cpu_stream->formats; + hw->formats &= formats; else - hw->formats = formats & cpu_stream->formats; - hw->rates = snd_pcm_rate_mask_intersect(rates, cpu_stream->rates); + hw->formats = formats; + hw->rates = snd_pcm_rate_mask_intersect(rates, cpu_rates); snd_pcm_limit_hw_rates(runtime); - hw->rate_min = max(hw->rate_min, cpu_stream->rate_min); + hw->rate_min = max(hw->rate_min, cpu_rate_min); hw->rate_min = max(hw->rate_min, rate_min); - hw->rate_max = min_not_zero(hw->rate_max, cpu_stream->rate_max); + hw->rate_max = min_not_zero(hw->rate_max, cpu_rate_max); hw->rate_max = min_not_zero(hw->rate_max, rate_max); } @@ -482,9 +545,10 @@ static int soc_pcm_open(struct snd_pcm_substream *substream) struct snd_soc_pcm_runtime *rtd = substream->private_data; struct snd_pcm_runtime *runtime = substream->runtime; struct snd_soc_component *component; - struct snd_soc_dai *cpu_dai = rtd->cpu_dai; + struct snd_soc_dai *cpu_dai; struct snd_soc_dai *codec_dai; const char *codec_dai_name = "multicodec"; + const char *cpu_dai_name = "multicpu"; int i, ret = 0; for_each_rtd_components(rtd, i, component) @@ -496,11 +560,13 @@ static int soc_pcm_open(struct snd_pcm_substream *substream) mutex_lock_nested(&rtd->card->pcm_mutex, rtd->card->pcm_subclass); /* startup the audio subsystem */ - ret = snd_soc_dai_startup(cpu_dai, substream); - if (ret < 0) { - dev_err(cpu_dai->dev, "ASoC: can't open interface %s: %d\n", - cpu_dai->name, ret); - goto out; + for_each_rtd_cpu_dai(rtd, i, cpu_dai) { + ret = snd_soc_dai_startup(cpu_dai, substream); + if (ret < 0) { + dev_err(cpu_dai->dev, "ASoC: can't open interface %s: %d\n", + cpu_dai->name, ret); + goto interface_err; + } } ret = soc_pcm_components_open(substream, &component); @@ -541,34 +607,39 @@ static int soc_pcm_open(struct snd_pcm_substream *substream) if (rtd->num_codecs == 1) codec_dai_name = rtd->codec_dai->name; + if (rtd->num_cpus == 1) + cpu_dai_name = rtd->cpu_dai->name; + if (soc_pcm_has_symmetry(substream)) runtime->hw.info |= SNDRV_PCM_INFO_JOINT_DUPLEX; ret = -EINVAL; if (!runtime->hw.rates) { printk(KERN_ERR "ASoC: %s <-> %s No matching rates\n", - codec_dai_name, cpu_dai->name); + codec_dai_name, cpu_dai_name); goto config_err; } if (!runtime->hw.formats) { printk(KERN_ERR "ASoC: %s <-> %s No matching formats\n", - codec_dai_name, cpu_dai->name); + codec_dai_name, cpu_dai_name); goto config_err; } if (!runtime->hw.channels_min || !runtime->hw.channels_max || runtime->hw.channels_min > runtime->hw.channels_max) { printk(KERN_ERR "ASoC: %s <-> %s No matching channels\n", - codec_dai_name, cpu_dai->name); + codec_dai_name, cpu_dai_name); goto config_err; } soc_pcm_apply_msb(substream); /* Symmetry only applies if we've already got an active stream. */ - if (cpu_dai->active) { - ret = soc_pcm_apply_symmetry(substream, cpu_dai); - if (ret != 0) - goto config_err; + for_each_rtd_cpu_dai(rtd, i, cpu_dai) { + if (cpu_dai->active) { + ret = soc_pcm_apply_symmetry(substream, cpu_dai); + if (ret != 0) + goto config_err; + } } for_each_rtd_codec_dai(rtd, i, codec_dai) { @@ -580,7 +651,7 @@ static int soc_pcm_open(struct snd_pcm_substream *substream) } pr_debug("ASoC: %s <-> %s info:\n", - codec_dai_name, cpu_dai->name); + codec_dai_name, cpu_dai_name); pr_debug("ASoC: rate mask 0x%x\n", runtime->hw.rates); pr_debug("ASoC: min ch %d max ch %d\n", runtime->hw.channels_min, runtime->hw.channels_max); @@ -608,8 +679,12 @@ static int soc_pcm_open(struct snd_pcm_substream *substream) component_err: soc_pcm_components_close(substream, component); - snd_soc_dai_shutdown(cpu_dai, substream); -out: + i = rtd->num_cpus; + +interface_err: + for_each_rtd_cpu_dai_rollback(rtd, i, cpu_dai) + snd_soc_dai_shutdown(cpu_dai, substream); + mutex_unlock(&rtd->card->pcm_mutex); for_each_rtd_components(rtd, i, component) { @@ -643,7 +718,7 @@ static int soc_pcm_close(struct snd_pcm_substream *substream) { struct snd_soc_pcm_runtime *rtd = substream->private_data; struct snd_soc_component *component; - struct snd_soc_dai *cpu_dai = rtd->cpu_dai; + struct snd_soc_dai *cpu_dai; struct snd_soc_dai *codec_dai; int i; @@ -652,17 +727,21 @@ static int soc_pcm_close(struct snd_pcm_substream *substream) snd_soc_runtime_deactivate(rtd, substream->stream); /* clear the corresponding DAIs rate when inactive */ - if (!cpu_dai->active) - cpu_dai->rate = 0; + for_each_rtd_cpu_dai(rtd, i, cpu_dai) { + if (!cpu_dai->active) + cpu_dai->rate = 0; + } for_each_rtd_codec_dai(rtd, i, codec_dai) { if (!codec_dai->active) codec_dai->rate = 0; } - snd_soc_dai_digital_mute(cpu_dai, 1, substream->stream); + for_each_rtd_cpu_dai(rtd, i, cpu_dai) + snd_soc_dai_digital_mute(cpu_dai, 1, substream->stream); - snd_soc_dai_shutdown(cpu_dai, substream); + for_each_rtd_cpu_dai(rtd, i, cpu_dai) + snd_soc_dai_shutdown(cpu_dai, substream); for_each_rtd_codec_dai(rtd, i, codec_dai) snd_soc_dai_shutdown(codec_dai, substream); @@ -697,7 +776,7 @@ static int soc_pcm_prepare(struct snd_pcm_substream *substream) { struct snd_soc_pcm_runtime *rtd = substream->private_data; struct snd_soc_component *component; - struct snd_soc_dai *cpu_dai = rtd->cpu_dai; + struct snd_soc_dai *cpu_dai; struct snd_soc_dai *codec_dai; int i, ret = 0; @@ -731,11 +810,13 @@ static int soc_pcm_prepare(struct snd_pcm_substream *substream) } } - ret = snd_soc_dai_prepare(cpu_dai, substream); - if (ret < 0) { - dev_err(cpu_dai->dev, - "ASoC: cpu DAI prepare error: %d\n", ret); - goto out; + for_each_rtd_cpu_dai(rtd, i, cpu_dai) { + ret = snd_soc_dai_prepare(cpu_dai, substream); + if (ret < 0) { + dev_err(cpu_dai->dev, + "ASoC: cpu DAI prepare error: %d\n", ret); + goto out; + } } /* cancel any delayed stream shutdown that is pending */ @@ -751,7 +832,8 @@ static int soc_pcm_prepare(struct snd_pcm_substream *substream) for_each_rtd_codec_dai(rtd, i, codec_dai) snd_soc_dai_digital_mute(codec_dai, 0, substream->stream); - snd_soc_dai_digital_mute(cpu_dai, 0, substream->stream); + for_each_rtd_cpu_dai(rtd, i, cpu_dai) + snd_soc_dai_digital_mute(cpu_dai, 0, substream->stream); out: mutex_unlock(&rtd->card->pcm_mutex); @@ -796,7 +878,7 @@ static int soc_pcm_hw_params(struct snd_pcm_substream *substream, { struct snd_soc_pcm_runtime *rtd = substream->private_data; struct snd_soc_component *component; - struct snd_soc_dai *cpu_dai = rtd->cpu_dai; + struct snd_soc_dai *cpu_dai; struct snd_soc_dai *codec_dai; int i, ret = 0; @@ -862,17 +944,19 @@ static int soc_pcm_hw_params(struct snd_pcm_substream *substream, snd_soc_dapm_update_dai(substream, &codec_params, codec_dai); } - ret = snd_soc_dai_hw_params(cpu_dai, substream, params); - if (ret < 0) - goto interface_err; + for_each_rtd_cpu_dai(rtd, i, cpu_dai) { + ret = snd_soc_dai_hw_params(cpu_dai, substream, params); + if (ret < 0) + goto interface_err; - /* store the parameters for each DAIs */ - cpu_dai->rate = params_rate(params); - cpu_dai->channels = params_channels(params); - cpu_dai->sample_bits = - snd_pcm_format_physical_width(params_format(params)); + /* store the parameters for each DAI */ + cpu_dai->rate = params_rate(params); + cpu_dai->channels = params_channels(params); + cpu_dai->sample_bits = + snd_pcm_format_physical_width(params_format(params)); - snd_soc_dapm_update_dai(substream, params, cpu_dai); + snd_soc_dapm_update_dai(substream, params, cpu_dai); + } for_each_rtd_components(rtd, i, component) { ret = snd_soc_component_hw_params(component, substream, params); @@ -892,10 +976,14 @@ static int soc_pcm_hw_params(struct snd_pcm_substream *substream, component_err: soc_pcm_components_hw_free(substream, component); - snd_soc_dai_hw_free(cpu_dai, substream); - cpu_dai->rate = 0; + i = rtd->num_cpus; interface_err: + for_each_rtd_cpu_dai_rollback(rtd, i, cpu_dai) { + snd_soc_dai_hw_free(cpu_dai, substream); + cpu_dai->rate = 0; + } + i = rtd->num_codecs; codec_err: @@ -920,7 +1008,7 @@ static int soc_pcm_hw_params(struct snd_pcm_substream *substream, static int soc_pcm_hw_free(struct snd_pcm_substream *substream) { struct snd_soc_pcm_runtime *rtd = substream->private_data; - struct snd_soc_dai *cpu_dai = rtd->cpu_dai; + struct snd_soc_dai *cpu_dai; struct snd_soc_dai *codec_dai; bool playback = substream->stream == SNDRV_PCM_STREAM_PLAYBACK; int i; @@ -928,10 +1016,12 @@ static int soc_pcm_hw_free(struct snd_pcm_substream *substream) mutex_lock_nested(&rtd->card->pcm_mutex, rtd->card->pcm_subclass); /* clear the corresponding DAIs parameters when going to be inactive */ - if (cpu_dai->active == 1) { - cpu_dai->rate = 0; - cpu_dai->channels = 0; - cpu_dai->sample_bits = 0; + for_each_rtd_cpu_dai(rtd, i, cpu_dai) { + if (cpu_dai->active == 1) { + cpu_dai->rate = 0; + cpu_dai->channels = 0; + cpu_dai->sample_bits = 0; + } } for_each_rtd_codec_dai(rtd, i, codec_dai) { @@ -965,7 +1055,8 @@ static int soc_pcm_hw_free(struct snd_pcm_substream *substream) snd_soc_dai_hw_free(codec_dai, substream); } - snd_soc_dai_hw_free(cpu_dai, substream); + for_each_rtd_cpu_dai(rtd, i, cpu_dai) + snd_soc_dai_hw_free(cpu_dai, substream); mutex_unlock(&rtd->card->pcm_mutex); return 0; @@ -975,7 +1066,7 @@ static int soc_pcm_trigger_start(struct snd_pcm_substream *substream, int cmd) { struct snd_soc_pcm_runtime *rtd = substream->private_data; struct snd_soc_component *component; - struct snd_soc_dai *cpu_dai = rtd->cpu_dai; + struct snd_soc_dai *cpu_dai; struct snd_soc_dai *codec_dai; int i, ret; @@ -991,9 +1082,11 @@ static int soc_pcm_trigger_start(struct snd_pcm_substream *substream, int cmd) return ret; } - ret = snd_soc_dai_trigger(cpu_dai, substream, cmd); - if (ret < 0) - return ret; + for_each_rtd_cpu_dai(rtd, i, cpu_dai) { + ret = snd_soc_dai_trigger(cpu_dai, substream, cmd); + if (ret < 0) + return ret; + } for_each_rtd_codec_dai(rtd, i, codec_dai) { ret = snd_soc_dai_trigger(codec_dai, substream, cmd); @@ -1008,7 +1101,7 @@ static int soc_pcm_trigger_stop(struct snd_pcm_substream *substream, int cmd) { struct snd_soc_pcm_runtime *rtd = substream->private_data; struct snd_soc_component *component; - struct snd_soc_dai *cpu_dai = rtd->cpu_dai; + struct snd_soc_dai *cpu_dai; struct snd_soc_dai *codec_dai; int i, ret; @@ -1018,9 +1111,11 @@ static int soc_pcm_trigger_stop(struct snd_pcm_substream *substream, int cmd) return ret; } - ret = snd_soc_dai_trigger(cpu_dai, substream, cmd); - if (ret < 0) - return ret; + for_each_rtd_cpu_dai(rtd, i, cpu_dai) { + ret = snd_soc_dai_trigger(cpu_dai, substream, cmd); + if (ret < 0) + return ret; + } for_each_rtd_components(rtd, i, component) { ret = snd_soc_component_trigger(component, substream, cmd); @@ -1063,7 +1158,7 @@ static int soc_pcm_bespoke_trigger(struct snd_pcm_substream *substream, int cmd) { struct snd_soc_pcm_runtime *rtd = substream->private_data; - struct snd_soc_dai *cpu_dai = rtd->cpu_dai; + struct snd_soc_dai *cpu_dai; struct snd_soc_dai *codec_dai; int i, ret; @@ -1073,9 +1168,11 @@ static int soc_pcm_bespoke_trigger(struct snd_pcm_substream *substream, return ret; } - ret = snd_soc_dai_bespoke_trigger(cpu_dai, substream, cmd); - if (ret < 0) - return ret; + for_each_rtd_cpu_dai(rtd, i, cpu_dai) { + ret = snd_soc_dai_bespoke_trigger(cpu_dai, substream, cmd); + if (ret < 0) + return ret; + } return 0; } @@ -1087,12 +1184,13 @@ static int soc_pcm_bespoke_trigger(struct snd_pcm_substream *substream, static snd_pcm_uframes_t soc_pcm_pointer(struct snd_pcm_substream *substream) { struct snd_soc_pcm_runtime *rtd = substream->private_data; - struct snd_soc_dai *cpu_dai = rtd->cpu_dai; + struct snd_soc_dai *cpu_dai; struct snd_soc_dai *codec_dai; struct snd_pcm_runtime *runtime = substream->runtime; snd_pcm_uframes_t offset = 0; snd_pcm_sframes_t delay = 0; snd_pcm_sframes_t codec_delay = 0; + snd_pcm_sframes_t cpu_delay = 0; int i; /* clearing the previous total delay */ @@ -1103,7 +1201,11 @@ static snd_pcm_uframes_t soc_pcm_pointer(struct snd_pcm_substream *substream) /* base delay if assigned in pointer callback */ delay = runtime->delay; - delay += snd_soc_dai_delay(cpu_dai, substream); + for_each_rtd_cpu_dai(rtd, i, cpu_dai) { + cpu_delay = max(cpu_delay, + snd_soc_dai_delay(cpu_dai, substream)); + } + delay += cpu_delay; for_each_rtd_codec_dai(rtd, i, codec_dai) { codec_delay = max(codec_delay, @@ -1229,6 +1331,7 @@ static struct snd_soc_pcm_runtime *dpcm_get_be(struct snd_soc_card *card, { struct snd_soc_pcm_runtime *be; struct snd_soc_dai *dai; + struct snd_soc_dai *cpu_dai; int i; dev_dbg(card->dev, "ASoC: find BE for widget %s\n", widget->name); @@ -1239,12 +1342,15 @@ static struct snd_soc_pcm_runtime *dpcm_get_be(struct snd_soc_card *card, if (!be->dai_link->no_pcm) continue; - dev_dbg(card->dev, "ASoC: try BE : %s\n", - be->cpu_dai->playback_widget ? - be->cpu_dai->playback_widget->name : "(not set)"); + for_each_rtd_cpu_dai(be, i, cpu_dai) { + dev_dbg(card->dev, "ASoC: try BE : %s\n", + cpu_dai->playback_widget ? + cpu_dai->playback_widget->name : + "(not set)"); - if (be->cpu_dai->playback_widget == widget) - return be; + if (cpu_dai->playback_widget == widget) + return be; + } for_each_rtd_codec_dai(be, i, dai) { if (dai->playback_widget == widget) @@ -1258,12 +1364,15 @@ static struct snd_soc_pcm_runtime *dpcm_get_be(struct snd_soc_card *card, if (!be->dai_link->no_pcm) continue; - dev_dbg(card->dev, "ASoC: try BE %s\n", - be->cpu_dai->capture_widget ? - be->cpu_dai->capture_widget->name : "(not set)"); + for_each_rtd_cpu_dai(be, i, cpu_dai) { + dev_dbg(card->dev, "ASoC: try BE %s\n", + cpu_dai->capture_widget ? + cpu_dai->capture_widget->name : + "(not set)"); - if (be->cpu_dai->capture_widget == widget) - return be; + if (cpu_dai->capture_widget == widget) + return be; + } for_each_rtd_codec_dai(be, i, dai) { if (dai->capture_widget == widget) @@ -1313,8 +1422,10 @@ static bool dpcm_end_walk_at_be(struct snd_soc_dapm_widget *widget, if (!rtd->dai_link->no_pcm) continue; - if (rtd->cpu_dai->playback_widget == widget) - return true; + for_each_rtd_cpu_dai(rtd, i, dai) { + if (dai->playback_widget == widget) + return true; + } for_each_rtd_codec_dai(rtd, i, dai) { if (dai->playback_widget == widget) @@ -1326,8 +1437,10 @@ static bool dpcm_end_walk_at_be(struct snd_soc_dapm_widget *widget, if (!rtd->dai_link->no_pcm) continue; - if (rtd->cpu_dai->capture_widget == widget) - return true; + for_each_rtd_cpu_dai(rtd, i, dai) { + if (dai->capture_widget == widget) + return true; + } for_each_rtd_codec_dai(rtd, i, dai) { if (dai->capture_widget == widget) @@ -1370,10 +1483,18 @@ static int dpcm_prune_paths(struct snd_soc_pcm_runtime *fe, int stream, unsigned int i; /* is there a valid CPU DAI widget for this BE */ - widget = dai_get_widget(dpcm->be->cpu_dai, stream); + do_prune = 1; + for_each_rtd_cpu_dai(dpcm->be, i, dai) { + widget = dai_get_widget(dai, stream); - /* prune the BE if it's no longer in our active list */ - if (widget && widget_in_list(list, widget)) + /* + * The BE is pruned only if none of the cpu_dai + * widgets are in the active list. + */ + if (widget && widget_in_list(list, widget)) + do_prune = 0; + } + if (!do_prune) continue; /* is there a valid CODEC DAI widget for this BE */ @@ -1672,18 +1793,25 @@ static void dpcm_runtime_merge_chan(struct snd_pcm_substream *substream, for_each_dpcm_be(fe, stream, dpcm) { struct snd_soc_pcm_runtime *be = dpcm->be; - struct snd_soc_dai_driver *cpu_dai_drv = be->cpu_dai->driver; + struct snd_soc_dai_driver *cpu_dai_drv; struct snd_soc_dai_driver *codec_dai_drv; struct snd_soc_pcm_stream *codec_stream; struct snd_soc_pcm_stream *cpu_stream; + struct snd_soc_dai *dai; + int i; - if (stream == SNDRV_PCM_STREAM_PLAYBACK) - cpu_stream = &cpu_dai_drv->playback; - else - cpu_stream = &cpu_dai_drv->capture; + for_each_rtd_cpu_dai(be, i, dai) { + cpu_dai_drv = dai->driver; + if (stream == SNDRV_PCM_STREAM_PLAYBACK) + cpu_stream = &cpu_dai_drv->playback; + else + cpu_stream = &cpu_dai_drv->capture; - *channels_min = max(*channels_min, cpu_stream->channels_min); - *channels_max = min(*channels_max, cpu_stream->channels_max); + *channels_min = max(*channels_min, + cpu_stream->channels_min); + *channels_max = min(*channels_max, + cpu_stream->channels_max); + } /* * chan min/max cannot be enforced if there are multiple CODEC @@ -1724,21 +1852,26 @@ static void dpcm_runtime_merge_rate(struct snd_pcm_substream *substream, for_each_dpcm_be(fe, stream, dpcm) { struct snd_soc_pcm_runtime *be = dpcm->be; - struct snd_soc_dai_driver *cpu_dai_drv = be->cpu_dai->driver; + struct snd_soc_dai_driver *cpu_dai_drv; struct snd_soc_dai_driver *codec_dai_drv; struct snd_soc_pcm_stream *codec_stream; struct snd_soc_pcm_stream *cpu_stream; struct snd_soc_dai *dai; int i; - if (stream == SNDRV_PCM_STREAM_PLAYBACK) - cpu_stream = &cpu_dai_drv->playback; - else - cpu_stream = &cpu_dai_drv->capture; + for_each_rtd_cpu_dai(be, i, dai) { + cpu_dai_drv = dai->driver; + if (stream == SNDRV_PCM_STREAM_PLAYBACK) + cpu_stream = &cpu_dai_drv->playback; + else + cpu_stream = &cpu_dai_drv->capture; - *rate_min = max(*rate_min, cpu_stream->rate_min); - *rate_max = min_not_zero(*rate_max, cpu_stream->rate_max); - *rates = snd_pcm_rate_mask_intersect(*rates, cpu_stream->rates); + *rate_min = max(*rate_min, cpu_stream->rate_min); + *rate_max = min_not_zero(*rate_max, + cpu_stream->rate_max); + *rates = snd_pcm_rate_mask_intersect(*rates, + cpu_stream->rates); + } for_each_rtd_codec_dai(be, i, dai) { /* @@ -1767,13 +1900,17 @@ static void dpcm_set_fe_runtime(struct snd_pcm_substream *substream) { struct snd_pcm_runtime *runtime = substream->runtime; struct snd_soc_pcm_runtime *rtd = substream->private_data; - struct snd_soc_dai *cpu_dai = rtd->cpu_dai; - struct snd_soc_dai_driver *cpu_dai_drv = cpu_dai->driver; + struct snd_soc_dai *cpu_dai; + struct snd_soc_dai_driver *cpu_dai_drv; + int i; - if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) - dpcm_init_runtime_hw(runtime, &cpu_dai_drv->playback); - else - dpcm_init_runtime_hw(runtime, &cpu_dai_drv->capture); + for_each_rtd_cpu_dai(rtd, i, cpu_dai) { + cpu_dai_drv = cpu_dai->driver; + if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) + dpcm_init_runtime_hw(runtime, &cpu_dai_drv->playback); + else + dpcm_init_runtime_hw(runtime, &cpu_dai_drv->capture); + } dpcm_runtime_merge_format(substream, &runtime->hw.formats); dpcm_runtime_merge_chan(substream, &runtime->hw.channels_min, @@ -1831,6 +1968,7 @@ static int dpcm_apply_symmetry(struct snd_pcm_substream *fe_substream, snd_soc_dpcm_get_substream(be, stream); struct snd_soc_pcm_runtime *rtd; struct snd_soc_dai *codec_dai; + struct snd_soc_dai *cpu_dai; int i; /* A backend may not have the requested substream */ @@ -1845,11 +1983,13 @@ static int dpcm_apply_symmetry(struct snd_pcm_substream *fe_substream, be_substream->runtime->hw.info |= SNDRV_PCM_INFO_JOINT_DUPLEX; /* Symmetry only applies if we've got an active stream. */ - if (rtd->cpu_dai->active) { - err = soc_pcm_apply_symmetry(fe_substream, - rtd->cpu_dai); - if (err < 0) - return err; + for_each_rtd_cpu_dai(rtd, i, cpu_dai) { + if (cpu_dai->active) { + err = soc_pcm_apply_symmetry(fe_substream, + cpu_dai); + if (err < 0) + return err; + } } for_each_rtd_codec_dai(rtd, i, codec_dai) { @@ -2836,7 +2976,7 @@ static int dpcm_fe_dai_close(struct snd_pcm_substream *fe_substream) int soc_new_pcm(struct snd_soc_pcm_runtime *rtd, int num) { struct snd_soc_dai *codec_dai; - struct snd_soc_dai *cpu_dai = rtd->cpu_dai; + struct snd_soc_dai *cpu_dai; struct snd_soc_component *component; struct snd_pcm *pcm; char new_name[64]; @@ -2848,12 +2988,20 @@ int soc_new_pcm(struct snd_soc_pcm_runtime *rtd, int num) capture = rtd->dai_link->dpcm_capture; } else { /* Adapt stream for codec2codec links */ - struct snd_soc_pcm_stream *cpu_capture = rtd->dai_link->params ? - &cpu_dai->driver->playback : &cpu_dai->driver->capture; - struct snd_soc_pcm_stream *cpu_playback = rtd->dai_link->params ? - &cpu_dai->driver->capture : &cpu_dai->driver->playback; + struct snd_soc_pcm_stream *cpu_capture; + struct snd_soc_pcm_stream *cpu_playback; for_each_rtd_codec_dai(rtd, i, codec_dai) { + if (rtd->num_cpus == 1) { + cpu_dai = rtd->cpu_dais[0]; + } else if (rtd->num_cpus == rtd->num_codecs) { + cpu_dai = rtd->cpu_dais[i]; + } else { + dev_err(rtd->card->dev, + "N cpus to M codecs link is not supported yet\n"); + return -EINVAL; + } + if (snd_soc_dai_stream_valid(codec_dai, SNDRV_PCM_STREAM_PLAYBACK) && snd_soc_dai_stream_valid(cpu_dai, SNDRV_PCM_STREAM_PLAYBACK)) playback = 1; @@ -2862,8 +3010,17 @@ int soc_new_pcm(struct snd_soc_pcm_runtime *rtd, int num) capture = 1; } - capture = capture && cpu_capture->channels_min; - playback = playback && cpu_playback->channels_min; + for_each_rtd_cpu_dai(rtd, i, cpu_dai) { + if (rtd->dai_link->params) { + cpu_capture = &cpu_dai->driver->playback; + cpu_playback = &cpu_dai->driver->capture; + } else { + cpu_capture = &cpu_dai->driver->capture; + cpu_playback = &cpu_dai->driver->playback; + } + capture = capture && cpu_capture->channels_min; + playback = playback && cpu_playback->channels_min; + } } if (rtd->dai_link->playback_only) { @@ -2977,7 +3134,7 @@ int soc_new_pcm(struct snd_soc_pcm_runtime *rtd, int num) out: dev_info(rtd->card->dev, "%s <-> %s mapping ok\n", (rtd->num_codecs > 1) ? "multicodec" : rtd->codec_dai->name, - cpu_dai->name); + (rtd->num_cpus > 1) ? "multicpu" : rtd->cpu_dai->name); return ret; } From 19b41c7dc5f57501ed314001ee5bc1873e3cc54b Mon Sep 17 00:00:00 2001 From: Shreyas NC Date: Mon, 20 Jan 2020 20:47:53 +0800 Subject: [PATCH 3/6] ASoC: Add dapm_add_valid_dai_widget helper Adding a helper to connect widget for a specific cpu and codec dai The helper will help dapm_connect_dai_link_widgets() to reduce indents. Signed-off-by: Vinod Koul Signed-off-by: Shreyas NC Signed-off-by: Kuninori Morimoto Signed-off-by: Bard Liao --- sound/soc/soc-dapm.c | 119 +++++++++++++++++++++++-------------------- 1 file changed, 63 insertions(+), 56 deletions(-) diff --git a/sound/soc/soc-dapm.c b/sound/soc/soc-dapm.c index 442846f12cd430..1a414054ee2307 100644 --- a/sound/soc/soc-dapm.c +++ b/sound/soc/soc-dapm.c @@ -4274,16 +4274,15 @@ int snd_soc_dapm_link_dai_widgets(struct snd_soc_card *card) return 0; } -static void dapm_connect_dai_link_widgets(struct snd_soc_card *card, - struct snd_soc_pcm_runtime *rtd) +static void dapm_add_valid_dai_widget(struct snd_soc_card *card, + struct snd_soc_pcm_runtime *rtd, + struct snd_soc_dai *codec_dai, + struct snd_soc_dai *cpu_dai) { - struct snd_soc_dai *cpu_dai = rtd->cpu_dai; - struct snd_soc_dai *codec_dai; struct snd_soc_dapm_widget *playback = NULL, *capture = NULL; struct snd_soc_dapm_widget *codec, *playback_cpu, *capture_cpu; struct snd_pcm_substream *substream; struct snd_pcm_str *streams = rtd->pcm->streams; - int i; if (rtd->dai_link->params) { playback_cpu = cpu_dai->capture_widget; @@ -4295,67 +4294,75 @@ static void dapm_connect_dai_link_widgets(struct snd_soc_card *card, capture_cpu = capture; } - for_each_rtd_codec_dai(rtd, i, codec_dai) { - /* connect BE DAI playback if widgets are valid */ - codec = codec_dai->playback_widget; - - if (playback_cpu && codec) { - if (!playback) { - substream = streams[SNDRV_PCM_STREAM_PLAYBACK].substream; - playback = snd_soc_dapm_new_dai(card, substream, - "playback"); - if (IS_ERR(playback)) { - dev_err(rtd->dev, - "ASoC: Failed to create DAI %s: %ld\n", - codec_dai->name, - PTR_ERR(playback)); - continue; - } - - snd_soc_dapm_add_path(&card->dapm, playback_cpu, - playback, NULL, NULL); + /* connect BE DAI playback if widgets are valid */ + codec = codec_dai->playback_widget; + + if (playback_cpu && codec) { + if (!playback) { + substream = streams[SNDRV_PCM_STREAM_PLAYBACK].substream; + playback = snd_soc_dapm_new_dai(card, substream, + "playback"); + if (IS_ERR(playback)) { + dev_err(rtd->dev, + "ASoC: Failed to create DAI %s: %ld\n", + codec_dai->name, + PTR_ERR(playback)); + goto capture; } - dev_dbg(rtd->dev, "connected DAI link %s:%s -> %s:%s\n", - cpu_dai->component->name, playback_cpu->name, - codec_dai->component->name, codec->name); - - snd_soc_dapm_add_path(&card->dapm, playback, codec, - NULL, NULL); + snd_soc_dapm_add_path(&card->dapm, playback_cpu, + playback, NULL, NULL); } - } - for_each_rtd_codec_dai(rtd, i, codec_dai) { - /* connect BE DAI capture if widgets are valid */ - codec = codec_dai->capture_widget; - - if (codec && capture_cpu) { - if (!capture) { - substream = streams[SNDRV_PCM_STREAM_CAPTURE].substream; - capture = snd_soc_dapm_new_dai(card, substream, - "capture"); - if (IS_ERR(capture)) { - dev_err(rtd->dev, - "ASoC: Failed to create DAI %s: %ld\n", - codec_dai->name, - PTR_ERR(capture)); - continue; - } - - snd_soc_dapm_add_path(&card->dapm, capture, - capture_cpu, NULL, NULL); + dev_dbg(rtd->dev, "connected DAI link %s:%s -> %s:%s\n", + cpu_dai->component->name, playback_cpu->name, + codec_dai->component->name, codec->name); + + snd_soc_dapm_add_path(&card->dapm, playback, codec, + NULL, NULL); + } + +capture: + /* connect BE DAI capture if widgets are valid */ + codec = codec_dai->capture_widget; + + if (codec && capture_cpu) { + if (!capture) { + substream = streams[SNDRV_PCM_STREAM_CAPTURE].substream; + capture = snd_soc_dapm_new_dai(card, substream, + "capture"); + if (IS_ERR(capture)) { + dev_err(rtd->dev, + "ASoC: Failed to create DAI %s: %ld\n", + codec_dai->name, + PTR_ERR(capture)); + return; } - dev_dbg(rtd->dev, "connected DAI link %s:%s -> %s:%s\n", - codec_dai->component->name, codec->name, - cpu_dai->component->name, capture_cpu->name); - - snd_soc_dapm_add_path(&card->dapm, codec, capture, - NULL, NULL); + snd_soc_dapm_add_path(&card->dapm, capture, + capture_cpu, NULL, NULL); } + + dev_dbg(rtd->dev, "connected DAI link %s:%s -> %s:%s\n", + codec_dai->component->name, codec->name, + cpu_dai->component->name, capture_cpu->name); + + snd_soc_dapm_add_path(&card->dapm, codec, capture, + NULL, NULL); } } +static void dapm_connect_dai_link_widgets(struct snd_soc_card *card, + struct snd_soc_pcm_runtime *rtd) +{ + struct snd_soc_dai *codec_dai; + int i; + + for_each_rtd_codec_dai(rtd, i, codec_dai) + dapm_add_valid_dai_widget(card, rtd, + codec_dai, rtd->cpu_dais[0]); +} + static void soc_dapm_dai_stream_event(struct snd_soc_dai *dai, int stream, int event) { From 213efa37d459e474555158ec7b383887773bce5c Mon Sep 17 00:00:00 2001 From: Shreyas NC Date: Mon, 20 Jan 2020 22:12:54 +0800 Subject: [PATCH 4/6] ASoC: Add multiple CPU DAI support in DAPM DAPM handles DAIs during soc_dapm_stream_event() and during addition and creation of DAI widgets i.e., dapm_add_valid_dai_widget() and dapm_connect_dai_link_widgets(). Extend these functions to handle multiple cpu dai. Signed-off-by: Vinod Koul Signed-off-by: Shreyas NC Signed-off-by: Kuninori Morimoto Signed-off-by: Bard Liao --- sound/soc/soc-dapm.c | 20 ++++++++++++++++---- 1 file changed, 16 insertions(+), 4 deletions(-) diff --git a/sound/soc/soc-dapm.c b/sound/soc/soc-dapm.c index 1a414054ee2307..af4ddca8b7f3c5 100644 --- a/sound/soc/soc-dapm.c +++ b/sound/soc/soc-dapm.c @@ -4358,9 +4358,19 @@ static void dapm_connect_dai_link_widgets(struct snd_soc_card *card, struct snd_soc_dai *codec_dai; int i; - for_each_rtd_codec_dai(rtd, i, codec_dai) - dapm_add_valid_dai_widget(card, rtd, - codec_dai, rtd->cpu_dais[0]); + if (rtd->num_cpus == 1) { + for_each_rtd_codec_dai(rtd, i, codec_dai) + dapm_add_valid_dai_widget(card, rtd, codec_dai, + rtd->cpu_dais[0]); + } else if (rtd->num_codecs == rtd->num_cpus) { + for_each_rtd_codec_dai(rtd, i, codec_dai) + dapm_add_valid_dai_widget(card, rtd, codec_dai, + rtd->cpu_dais[i]); + } else { + dev_err(card->dev, + "N cpus to M codecs link is not supported yet\n"); + } + } static void soc_dapm_dai_stream_event(struct snd_soc_dai *dai, int stream, @@ -4424,9 +4434,11 @@ static void soc_dapm_stream_event(struct snd_soc_pcm_runtime *rtd, int stream, int event) { struct snd_soc_dai *codec_dai; + struct snd_soc_dai *cpu_dai; int i; - soc_dapm_dai_stream_event(rtd->cpu_dai, stream, event); + for_each_rtd_cpu_dai(rtd, i, cpu_dai) + soc_dapm_dai_stream_event(rtd->cpu_dai, stream, event); for_each_rtd_codec_dai(rtd, i, codec_dai) soc_dapm_dai_stream_event(codec_dai, stream, event); From c58d23e6edc3b344fba3462bdb5e9d393eba8b13 Mon Sep 17 00:00:00 2001 From: Bard liao Date: Thu, 2 Jan 2020 03:35:17 +0800 Subject: [PATCH 5/6] ASoC: return error if the function is not support multi cpu yet. Multi cpu is not supported by all functions yet. Add an error message and return. Suggested-by: Kuninori Morimoto Signed-off-by: Bard liao --- sound/soc/soc-compress.c | 5 +++-- sound/soc/soc-generic-dmaengine-pcm.c | 18 ++++++++++++++++++ sound/soc/soc-pcm.c | 18 ++++++++++++++++++ 3 files changed, 39 insertions(+), 2 deletions(-) diff --git a/sound/soc/soc-compress.c b/sound/soc/soc-compress.c index 223cd045719e8d..d05e78e963752c 100644 --- a/sound/soc/soc-compress.c +++ b/sound/soc/soc-compress.c @@ -810,9 +810,10 @@ int snd_soc_new_compress(struct snd_soc_pcm_runtime *rtd, int num) int playback = 0, capture = 0; int i; - if (rtd->num_codecs > 1) { + if (rtd->num_cpus > 1 || + rtd->num_codecs > 1) { dev_err(rtd->card->dev, - "Compress ASoC: Multicodec not supported\n"); + "Compress ASoC: Multi CPU/Codec not supported\n"); return -EINVAL; } diff --git a/sound/soc/soc-generic-dmaengine-pcm.c b/sound/soc/soc-generic-dmaengine-pcm.c index df57ec47ad60c8..781752b67e90b9 100644 --- a/sound/soc/soc-generic-dmaengine-pcm.c +++ b/sound/soc/soc-generic-dmaengine-pcm.c @@ -62,6 +62,12 @@ int snd_dmaengine_pcm_prepare_slave_config(struct snd_pcm_substream *substream, struct snd_dmaengine_dai_dma_data *dma_data; int ret; + if (rtd->num_cpus > 1) { + dev_err(rtd->dev, + "%s doesn't support Multi CPU yet\n", __func__); + return -EINVAL; + } + dma_data = snd_soc_dai_get_dma_data(rtd->cpu_dai, substream); ret = snd_hwparams_to_dma_slave_config(substream, params, slave_config); @@ -119,6 +125,12 @@ dmaengine_pcm_set_runtime_hwparams(struct snd_soc_component *component, struct snd_pcm_hardware hw; int ret; + if (rtd->num_cpus > 1) { + dev_err(rtd->dev, + "%s doesn't support Multi CPU yet\n", __func__); + return -EINVAL; + } + if (pcm->config && pcm->config->pcm_hardware) return snd_soc_set_runtime_hwparams(substream, pcm->config->pcm_hardware); @@ -183,6 +195,12 @@ static struct dma_chan *dmaengine_pcm_compat_request_channel( struct snd_dmaengine_dai_dma_data *dma_data; dma_filter_fn fn = NULL; + if (rtd->num_cpus > 1) { + dev_err(rtd->dev, + "%s doesn't support Multi CPU yet\n", __func__); + return -EINVAL; + } + dma_data = snd_soc_dai_get_dma_data(rtd->cpu_dai, substream); if ((pcm->flags & SND_DMAENGINE_PCM_FLAG_HALF_DUPLEX) && pcm->chan[0]) diff --git a/sound/soc/soc-pcm.c b/sound/soc/soc-pcm.c index bdc918576cf609..a1e84bbc5258c4 100644 --- a/sound/soc/soc-pcm.c +++ b/sound/soc/soc-pcm.c @@ -1458,6 +1458,12 @@ int dpcm_path_get(struct snd_soc_pcm_runtime *fe, struct snd_soc_dai *cpu_dai = fe->cpu_dai; int paths; + if (fe->num_cpus > 1) { + dev_err(fe->dev, + "%s doesn't support Multi CPU yet\n", __func__); + return -EINVAL; + } + /* get number of valid DAI paths and their widgets */ paths = snd_soc_dapm_dai_get_connected_widgets(cpu_dai, stream, list, dpcm_end_walk_at_be); @@ -2783,6 +2789,12 @@ static int soc_dpcm_fe_runtime_update(struct snd_soc_pcm_runtime *fe, int new) struct snd_soc_dapm_widget_list *list; int count, paths; + if (fe->num_cpus > 1) { + dev_err(fe->dev, + "%s doesn't support Multi CPU yet\n", __func__); + return -EINVAL; + } + if (!fe->dai_link->dynamic) return 0; @@ -3346,6 +3358,12 @@ static ssize_t dpcm_state_read_file(struct file *file, char __user *user_buf, ssize_t out_count = PAGE_SIZE, offset = 0, ret = 0; char *buf; + if (fe->num_cpus > 1) { + dev_err(fe->dev, + "%s doesn't support Multi CPU yet\n", __func__); + return -EINVAL; + } + buf = kmalloc(out_count, GFP_KERNEL); if (!buf) return -ENOMEM; From 918814f8fb74c3fe2f01d6e84c9a3ba2c802caba Mon Sep 17 00:00:00 2001 From: Bard Liao Date: Mon, 20 Jan 2020 22:46:22 +0800 Subject: [PATCH 6/6] ASoC: pcm: check if cpu DAI support the given stream Now multi-cpu-dai is supported. We have the same resaon as multi-codec-dai to skip CPUs which don't support the current stream. Signed-off-by: Bard Liao --- sound/soc/soc-pcm.c | 51 ++++++++++++++++++++++++++++++++++++++++++++- 1 file changed, 50 insertions(+), 1 deletion(-) diff --git a/sound/soc/soc-pcm.c b/sound/soc/soc-pcm.c index a1e84bbc5258c4..948363b3e61030 100644 --- a/sound/soc/soc-pcm.c +++ b/sound/soc/soc-pcm.c @@ -417,6 +417,20 @@ static void soc_pcm_init_runtime_hw(struct snd_pcm_substream *substream) /* first calculate min/max only for CPUs in the DAI link */ for_each_rtd_cpu_dai(rtd, i, cpu_dai) { + + /* + * Skip CPUs which don't support the current stream type. + * Otherwise, since the rate, channel, and format values will + * zero in that case, we would have no usable settings left, + * causing the resulting setup to fail. + * At least one CPU should match, otherwise we should have + * bailed out on a higher level, since there would be no + * CPU to support the transfer direction in that case. + */ + if (!snd_soc_dai_stream_valid(cpu_dai, + substream->stream)) + continue; + cpu_dai_drv = cpu_dai->driver; if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) cpu_stream = &cpu_dai_drv->playback; @@ -945,6 +959,13 @@ static int soc_pcm_hw_params(struct snd_pcm_substream *substream, } for_each_rtd_cpu_dai(rtd, i, cpu_dai) { + /* + * 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); if (ret < 0) goto interface_err; @@ -980,6 +1001,9 @@ static int soc_pcm_hw_params(struct snd_pcm_substream *substream, interface_err: for_each_rtd_cpu_dai_rollback(rtd, i, cpu_dai) { + if (!snd_soc_dai_stream_valid(cpu_dai, substream->stream)) + continue; + snd_soc_dai_hw_free(cpu_dai, substream); cpu_dai->rate = 0; } @@ -1055,8 +1079,12 @@ static int soc_pcm_hw_free(struct snd_pcm_substream *substream) snd_soc_dai_hw_free(codec_dai, substream); } - for_each_rtd_cpu_dai(rtd, i, cpu_dai) + for_each_rtd_cpu_dai(rtd, i, cpu_dai) { + if (!snd_soc_dai_stream_valid(cpu_dai, substream->stream)) + continue; + snd_soc_dai_hw_free(cpu_dai, substream); + } mutex_unlock(&rtd->card->pcm_mutex); return 0; @@ -1807,6 +1835,13 @@ static void dpcm_runtime_merge_chan(struct snd_pcm_substream *substream, int i; for_each_rtd_cpu_dai(be, i, dai) { + /* + * 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(dai, stream)) + continue; + cpu_dai_drv = dai->driver; if (stream == SNDRV_PCM_STREAM_PLAYBACK) cpu_stream = &cpu_dai_drv->playback; @@ -1866,6 +1901,13 @@ static void dpcm_runtime_merge_rate(struct snd_pcm_substream *substream, int i; for_each_rtd_cpu_dai(be, i, dai) { + /* + * 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(dai, stream)) + continue; + cpu_dai_drv = dai->driver; if (stream == SNDRV_PCM_STREAM_PLAYBACK) cpu_stream = &cpu_dai_drv->playback; @@ -1911,6 +1953,13 @@ static void dpcm_set_fe_runtime(struct snd_pcm_substream *substream) int i; for_each_rtd_cpu_dai(rtd, i, cpu_dai) { + /* + * 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; + cpu_dai_drv = cpu_dai->driver; if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) dpcm_init_runtime_hw(runtime, &cpu_dai_drv->playback);