| Author | Tokens | Token Proportion | Commits | Commit Proportion |
|---|---|---|---|---|
| Liam Girdwood | 9333 | 59.29% | 17 | 14.29% |
| Kuninori Morimoto | 2104 | 13.37% | 16 | 13.45% |
| Benoît Cousson | 828 | 5.26% | 4 | 3.36% |
| Lars-Peter Clausen | 658 | 4.18% | 18 | 15.13% |
| Nicolin Chen | 483 | 3.07% | 5 | 4.20% |
| Jerome Brunet | 479 | 3.04% | 5 | 4.20% |
| Takashi Iwai | 301 | 1.91% | 2 | 1.68% |
| PC Liao | 231 | 1.47% | 1 | 0.84% |
| Charles Keepax | 214 | 1.36% | 3 | 2.52% |
| Mark Brown | 183 | 1.16% | 12 | 10.08% |
| Jiada Wang | 179 | 1.14% | 2 | 1.68% |
| Piotr Stankiewicz | 133 | 0.84% | 2 | 1.68% |
| Qiao Zhou | 109 | 0.69% | 4 | 3.36% |
| Ricard Wanderlöf | 78 | 0.50% | 1 | 0.84% |
| Dong Aisheng | 57 | 0.36% | 1 | 0.84% |
| Jarkko Nikula | 42 | 0.27% | 3 | 2.52% |
| Fabio Estevam | 36 | 0.23% | 1 | 0.84% |
| Russell King | 30 | 0.19% | 1 | 0.84% |
| Koro Chen | 28 | 0.18% | 2 | 1.68% |
| Patrick Lai | 26 | 0.17% | 2 | 1.68% |
| Ramesh Babu K V | 23 | 0.15% | 2 | 1.68% |
| Vinod Koul | 23 | 0.15% | 2 | 1.68% |
| Sanyog Kale | 22 | 0.14% | 1 | 0.84% |
| Banajit Goswami | 22 | 0.14% | 1 | 0.84% |
| Sangsu Park | 22 | 0.14% | 1 | 0.84% |
| KaiChieh Chuang | 20 | 0.13% | 2 | 1.68% |
| Peter Ujfalusi | 16 | 0.10% | 1 | 0.84% |
| Sascha Hauer | 16 | 0.10% | 1 | 0.84% |
| Akshu Agrawal | 14 | 0.09% | 1 | 0.84% |
| Mengdong Lin | 9 | 0.06% | 1 | 0.84% |
| Jeeja KP | 9 | 0.06% | 1 | 0.84% |
| Misael Lopez Cruz | 6 | 0.04% | 1 | 0.84% |
| 彭东林 | 5 | 0.03% | 1 | 0.84% |
| Daniel Mack | 1 | 0.01% | 1 | 0.84% |
| Total | 15740 | 119 |
// SPDX-License-Identifier: GPL-2.0+ // // soc-pcm.c -- ALSA SoC PCM // // Copyright 2005 Wolfson Microelectronics PLC. // Copyright 2005 Openedhand Ltd. // Copyright (C) 2010 Slimlogic Ltd. // Copyright (C) 2010 Texas Instruments Inc. // // Authors: Liam Girdwood <lrg@ti.com> // Mark Brown <broonie@opensource.wolfsonmicro.com> #include <linux/kernel.h> #include <linux/init.h> #include <linux/delay.h> #include <linux/pinctrl/consumer.h> #include <linux/pm_runtime.h> #include <linux/slab.h> #include <linux/workqueue.h> #include <linux/export.h> #include <linux/debugfs.h> #include <sound/core.h> #include <sound/pcm.h> #include <sound/pcm_params.h> #include <sound/soc.h> #include <sound/soc-dpcm.h> #include <sound/initval.h> #define DPCM_MAX_BE_USERS 8 /* * snd_soc_dai_stream_valid() - check if a DAI supports the given stream * * Returns true if the DAI supports the indicated stream type. */ static bool snd_soc_dai_stream_valid(struct snd_soc_dai *dai, int stream) { struct snd_soc_pcm_stream *codec_stream; if (stream == SNDRV_PCM_STREAM_PLAYBACK) codec_stream = &dai->driver->playback; else codec_stream = &dai->driver->capture; /* If the codec specifies any rate at all, it supports the stream. */ return codec_stream->rates; } /** * snd_soc_runtime_activate() - Increment active count for PCM runtime components * @rtd: ASoC PCM runtime that is activated * @stream: Direction of the PCM stream * * Increments the active count for all the DAIs and components attached to a PCM * runtime. Should typically be called when a stream is opened. * * Must be called with the rtd->pcm_mutex being held */ 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 *codec_dai; int i; lockdep_assert_held(&rtd->pcm_mutex); if (stream == SNDRV_PCM_STREAM_PLAYBACK) { 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_codec_dai(rtd, i, codec_dai) codec_dai->capture_active++; } cpu_dai->active++; cpu_dai->component->active++; for_each_rtd_codec_dai(rtd, i, codec_dai) { codec_dai->active++; codec_dai->component->active++; } } /** * snd_soc_runtime_deactivate() - Decrement active count for PCM runtime components * @rtd: ASoC PCM runtime that is deactivated * @stream: Direction of the PCM stream * * Decrements the active count for all the DAIs and components attached to a PCM * runtime. Should typically be called when a stream is closed. * * Must be called with the rtd->pcm_mutex being held */ 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 *codec_dai; int i; lockdep_assert_held(&rtd->pcm_mutex); if (stream == SNDRV_PCM_STREAM_PLAYBACK) { 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_codec_dai(rtd, i, codec_dai) codec_dai->capture_active--; } cpu_dai->active--; cpu_dai->component->active--; for_each_rtd_codec_dai(rtd, i, codec_dai) { codec_dai->component->active--; codec_dai->active--; } } /** * snd_soc_runtime_ignore_pmdown_time() - Check whether to ignore the power down delay * @rtd: The ASoC PCM runtime that should be checked. * * This function checks whether the power down delay should be ignored for a * specific PCM runtime. Returns true if the delay is 0, if it the DAI link has * been configured to ignore the delay, or if none of the components benefits * from having the delay. */ bool snd_soc_runtime_ignore_pmdown_time(struct snd_soc_pcm_runtime *rtd) { struct snd_soc_rtdcom_list *rtdcom; struct snd_soc_component *component; bool ignore = true; if (!rtd->pmdown_time || rtd->dai_link->ignore_pmdown_time) return true; for_each_rtdcom(rtd, rtdcom) { component = rtdcom->component; ignore &= !component->driver->use_pmdown_time; } return ignore; } /** * snd_soc_set_runtime_hwparams - set the runtime hardware parameters * @substream: the pcm substream * @hw: the hardware parameters * * Sets the substream runtime hardware parameters. */ int snd_soc_set_runtime_hwparams(struct snd_pcm_substream *substream, const struct snd_pcm_hardware *hw) { struct snd_pcm_runtime *runtime = substream->runtime; runtime->hw.info = hw->info; runtime->hw.formats = hw->formats; runtime->hw.period_bytes_min = hw->period_bytes_min; runtime->hw.period_bytes_max = hw->period_bytes_max; runtime->hw.periods_min = hw->periods_min; runtime->hw.periods_max = hw->periods_max; runtime->hw.buffer_bytes_max = hw->buffer_bytes_max; runtime->hw.fifo_size = hw->fifo_size; return 0; } EXPORT_SYMBOL_GPL(snd_soc_set_runtime_hwparams); /* DPCM stream event, send event to FE and all active BEs. */ int dpcm_dapm_stream_event(struct snd_soc_pcm_runtime *fe, int dir, int event) { struct snd_soc_dpcm *dpcm; for_each_dpcm_be(fe, dir, dpcm) { struct snd_soc_pcm_runtime *be = dpcm->be; dev_dbg(be->dev, "ASoC: BE %s event %d dir %d\n", be->dai_link->name, event, dir); if ((event == SND_SOC_DAPM_STREAM_STOP) && (be->dpcm[dir].users >= 1)) continue; snd_soc_dapm_stream_event(be, dir, event); } snd_soc_dapm_stream_event(fe, dir, event); return 0; } static int soc_pcm_apply_symmetry(struct snd_pcm_substream *substream, struct snd_soc_dai *soc_dai) { struct snd_soc_pcm_runtime *rtd = substream->private_data; int ret; if (soc_dai->rate && (soc_dai->driver->symmetric_rates || rtd->dai_link->symmetric_rates)) { dev_dbg(soc_dai->dev, "ASoC: Symmetry forces %dHz rate\n", soc_dai->rate); ret = snd_pcm_hw_constraint_single(substream->runtime, SNDRV_PCM_HW_PARAM_RATE, soc_dai->rate); if (ret < 0) { dev_err(soc_dai->dev, "ASoC: Unable to apply rate constraint: %d\n", ret); return ret; } } if (soc_dai->channels && (soc_dai->driver->symmetric_channels || rtd->dai_link->symmetric_channels)) { dev_dbg(soc_dai->dev, "ASoC: Symmetry forces %d channel(s)\n", soc_dai->channels); ret = snd_pcm_hw_constraint_single(substream->runtime, SNDRV_PCM_HW_PARAM_CHANNELS, soc_dai->channels); if (ret < 0) { dev_err(soc_dai->dev, "ASoC: Unable to apply channel symmetry constraint: %d\n", ret); return ret; } } if (soc_dai->sample_bits && (soc_dai->driver->symmetric_samplebits || rtd->dai_link->symmetric_samplebits)) { dev_dbg(soc_dai->dev, "ASoC: Symmetry forces %d sample bits\n", soc_dai->sample_bits); ret = snd_pcm_hw_constraint_single(substream->runtime, SNDRV_PCM_HW_PARAM_SAMPLE_BITS, soc_dai->sample_bits); if (ret < 0) { dev_err(soc_dai->dev, "ASoC: Unable to apply sample bits symmetry constraint: %d\n", ret); return ret; } } return 0; } 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 *codec_dai; unsigned int rate, channels, sample_bits, symmetry, i; rate = params_rate(params); channels = params_channels(params); 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; 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; } symmetry = cpu_dai->driver->symmetric_channels || rtd->dai_link->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; } symmetry = cpu_dai->driver->symmetric_samplebits || rtd->dai_link->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; } return 0; } 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; 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; for_each_rtd_codec_dai(rtd, i, codec_dai) symmetry = symmetry || codec_dai->driver->symmetric_rates || codec_dai->driver->symmetric_channels || codec_dai->driver->symmetric_samplebits; return symmetry; } static void soc_pcm_set_msb(struct snd_pcm_substream *substream, int bits) { struct snd_soc_pcm_runtime *rtd = substream->private_data; int ret; if (!bits) return; ret = snd_pcm_hw_constraint_msbits(substream->runtime, 0, 0, bits); if (ret != 0) dev_warn(rtd->dev, "ASoC: Failed to set MSB %d: %d\n", bits, ret); } 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 *codec_dai; int i; unsigned int bits = 0, cpu_bits; if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) { for_each_rtd_codec_dai(rtd, i, codec_dai) { if (codec_dai->driver->playback.sig_bits == 0) { bits = 0; break; } bits = max(codec_dai->driver->playback.sig_bits, bits); } cpu_bits = cpu_dai->driver->playback.sig_bits; } else { for_each_rtd_codec_dai(rtd, i, codec_dai) { if (codec_dai->driver->capture.sig_bits == 0) { bits = 0; break; } bits = max(codec_dai->driver->capture.sig_bits, bits); } cpu_bits = cpu_dai->driver->capture.sig_bits; } soc_pcm_set_msb(substream, bits); soc_pcm_set_msb(substream, cpu_bits); } static void soc_pcm_init_runtime_hw(struct snd_pcm_substream *substream) { struct snd_pcm_runtime *runtime = substream->runtime; 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_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 rate_min = 0, rate_max = UINT_MAX; unsigned int 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 CODECs in the DAI link */ for_each_rtd_codec_dai(rtd, i, codec_dai) { /* * Skip CODECs 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 CODEC should match, otherwise we should have * bailed out on a higher level, since there would be no * CODEC to support the transfer direction in that case. */ if (!snd_soc_dai_stream_valid(codec_dai, substream->stream)) continue; codec_dai_drv = codec_dai->driver; if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) codec_stream = &codec_dai_drv->playback; else codec_stream = &codec_dai_drv->capture; chan_min = max(chan_min, codec_stream->channels_min); chan_max = min(chan_max, codec_stream->channels_max); rate_min = max(rate_min, codec_stream->rate_min); rate_max = min_not_zero(rate_max, codec_stream->rate_max); formats &= codec_stream->formats; rates = snd_pcm_rate_mask_intersect(codec_stream->rates, rates); } /* * 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 * channel allocation be fixed up later */ if (rtd->num_codecs > 1) { chan_min = cpu_stream->channels_min; chan_max = cpu_stream->channels_max; } hw->channels_min = max(chan_min, cpu_stream->channels_min); hw->channels_max = min(chan_max, cpu_stream->channels_max); if (hw->formats) hw->formats &= formats & cpu_stream->formats; else hw->formats = formats & cpu_stream->formats; hw->rates = snd_pcm_rate_mask_intersect(rates, cpu_stream->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, rate_min); hw->rate_max = min_not_zero(hw->rate_max, cpu_stream->rate_max); hw->rate_max = min_not_zero(hw->rate_max, rate_max); } static int soc_pcm_components_close(struct snd_pcm_substream *substream, struct snd_soc_component *last) { struct snd_soc_pcm_runtime *rtd = substream->private_data; struct snd_soc_rtdcom_list *rtdcom; struct snd_soc_component *component; for_each_rtdcom(rtd, rtdcom) { component = rtdcom->component; if (component == last) break; if (!component->driver->ops || !component->driver->ops->close) continue; component->driver->ops->close(substream); } return 0; } /* * Called by ALSA when a PCM substream is opened, the runtime->hw record is * then initialized and any private data can be allocated. This also calls * startup for the cpu DAI, component, machine and codec DAI. */ 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_rtdcom_list *rtdcom; struct snd_soc_dai *cpu_dai = rtd->cpu_dai; struct snd_soc_dai *codec_dai; const char *codec_dai_name = "multicodec"; int i, ret = 0; pinctrl_pm_select_default_state(cpu_dai->dev); for_each_rtd_codec_dai(rtd, i, codec_dai) pinctrl_pm_select_default_state(codec_dai->dev); for_each_rtdcom(rtd, rtdcom) { component = rtdcom->component; pm_runtime_get_sync(component->dev); } mutex_lock_nested(&rtd->pcm_mutex, rtd->pcm_subclass); /* startup the audio subsystem */ if (cpu_dai->driver->ops->startup) { ret = cpu_dai->driver->ops->startup(substream, cpu_dai); if (ret < 0) { dev_err(cpu_dai->dev, "ASoC: can't open interface" " %s: %d\n", cpu_dai->name, ret); goto out; } } for_each_rtdcom(rtd, rtdcom) { component = rtdcom->component; if (!component->driver->ops || !component->driver->ops->open) continue; ret = component->driver->ops->open(substream); if (ret < 0) { dev_err(component->dev, "ASoC: can't open component %s: %d\n", component->name, ret); goto component_err; } } component = NULL; for_each_rtd_codec_dai(rtd, i, codec_dai) { if (codec_dai->driver->ops->startup) { ret = codec_dai->driver->ops->startup(substream, codec_dai); if (ret < 0) { dev_err(codec_dai->dev, "ASoC: can't open codec %s: %d\n", codec_dai->name, ret); goto codec_dai_err; } } if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) codec_dai->tx_mask = 0; else codec_dai->rx_mask = 0; } if (rtd->dai_link->ops->startup) { ret = rtd->dai_link->ops->startup(substream); if (ret < 0) { pr_err("ASoC: %s startup failed: %d\n", rtd->dai_link->name, ret); goto machine_err; } } /* Dynamic PCM DAI links compat checks use dynamic capabilities */ if (rtd->dai_link->dynamic || rtd->dai_link->no_pcm) goto dynamic; /* Check that the codec and cpu DAIs are compatible */ soc_pcm_init_runtime_hw(substream); if (rtd->num_codecs == 1) codec_dai_name = rtd->codec_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); goto config_err; } if (!runtime->hw.formats) { printk(KERN_ERR "ASoC: %s <-> %s No matching formats\n", 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); 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_codec_dai(rtd, i, codec_dai) { if (codec_dai->active) { ret = soc_pcm_apply_symmetry(substream, codec_dai); if (ret != 0) goto config_err; } } pr_debug("ASoC: %s <-> %s info:\n", 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); pr_debug("ASoC: min rate %d max rate %d\n", runtime->hw.rate_min, runtime->hw.rate_max); dynamic: snd_soc_runtime_activate(rtd, substream->stream); mutex_unlock(&rtd->pcm_mutex); return 0; config_err: if (rtd->dai_link->ops->shutdown) rtd->dai_link->ops->shutdown(substream); machine_err: i = rtd->num_codecs; codec_dai_err: for_each_rtd_codec_dai_rollback(rtd, i, codec_dai) { if (codec_dai->driver->ops->shutdown) codec_dai->driver->ops->shutdown(substream, codec_dai); } component_err: soc_pcm_components_close(substream, component); if (cpu_dai->driver->ops->shutdown) cpu_dai->driver->ops->shutdown(substream, cpu_dai); out: mutex_unlock(&rtd->pcm_mutex); for_each_rtdcom(rtd, rtdcom) { component = rtdcom->component; pm_runtime_mark_last_busy(component->dev); pm_runtime_put_autosuspend(component->dev); } for_each_rtd_codec_dai(rtd, i, codec_dai) { if (!codec_dai->active) pinctrl_pm_select_sleep_state(codec_dai->dev); } if (!cpu_dai->active) pinctrl_pm_select_sleep_state(cpu_dai->dev); return ret; } /* * Power down the audio subsystem pmdown_time msecs after close is called. * This is to ensure there are no pops or clicks in between any music tracks * due to DAPM power cycling. */ static void close_delayed_work(struct work_struct *work) { struct snd_soc_pcm_runtime *rtd = container_of(work, struct snd_soc_pcm_runtime, delayed_work.work); struct snd_soc_dai *codec_dai = rtd->codec_dais[0]; mutex_lock_nested(&rtd->pcm_mutex, rtd->pcm_subclass); dev_dbg(rtd->dev, "ASoC: pop wq checking: %s status: %s waiting: %s\n", codec_dai->driver->playback.stream_name, codec_dai->playback_active ? "active" : "inactive", rtd->pop_wait ? "yes" : "no"); /* are we waiting on this codec DAI stream */ if (rtd->pop_wait == 1) { rtd->pop_wait = 0; snd_soc_dapm_stream_event(rtd, SNDRV_PCM_STREAM_PLAYBACK, SND_SOC_DAPM_STREAM_STOP); } mutex_unlock(&rtd->pcm_mutex); } /* * Called by ALSA when a PCM substream is closed. Private data can be * freed here. The cpu DAI, codec DAI, machine and components are also * shutdown. */ 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_rtdcom_list *rtdcom; struct snd_soc_dai *cpu_dai = rtd->cpu_dai; struct snd_soc_dai *codec_dai; int i; mutex_lock_nested(&rtd->pcm_mutex, rtd->pcm_subclass); 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_codec_dai(rtd, i, codec_dai) { if (!codec_dai->active) codec_dai->rate = 0; } snd_soc_dai_digital_mute(cpu_dai, 1, substream->stream); if (cpu_dai->driver->ops->shutdown) cpu_dai->driver->ops->shutdown(substream, cpu_dai); for_each_rtd_codec_dai(rtd, i, codec_dai) { if (codec_dai->driver->ops->shutdown) codec_dai->driver->ops->shutdown(substream, codec_dai); } if (rtd->dai_link->ops->shutdown) rtd->dai_link->ops->shutdown(substream); soc_pcm_components_close(substream, NULL); if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) { if (snd_soc_runtime_ignore_pmdown_time(rtd)) { /* powered down playback stream now */ snd_soc_dapm_stream_event(rtd, SNDRV_PCM_STREAM_PLAYBACK, SND_SOC_DAPM_STREAM_STOP); } else { /* start delayed pop wq here for playback streams */ rtd->pop_wait = 1; queue_delayed_work(system_power_efficient_wq, &rtd->delayed_work, msecs_to_jiffies(rtd->pmdown_time)); } } else { /* capture streams can be powered down now */ snd_soc_dapm_stream_event(rtd, SNDRV_PCM_STREAM_CAPTURE, SND_SOC_DAPM_STREAM_STOP); } mutex_unlock(&rtd->pcm_mutex); for_each_rtdcom(rtd, rtdcom) { component = rtdcom->component; pm_runtime_mark_last_busy(component->dev); pm_runtime_put_autosuspend(component->dev); } for_each_rtd_codec_dai(rtd, i, codec_dai) { if (!codec_dai->active) pinctrl_pm_select_sleep_state(codec_dai->dev); } if (!cpu_dai->active) pinctrl_pm_select_sleep_state(cpu_dai->dev); return 0; } /* * Called by ALSA when the PCM substream is prepared, can set format, sample * rate, etc. This function is non atomic and can be called multiple times, * it can refer to the runtime info. */ 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_rtdcom_list *rtdcom; struct snd_soc_dai *cpu_dai = rtd->cpu_dai; struct snd_soc_dai *codec_dai; int i, ret = 0; mutex_lock_nested(&rtd->pcm_mutex, rtd->pcm_subclass); if (rtd->dai_link->ops->prepare) { ret = rtd->dai_link->ops->prepare(substream); if (ret < 0) { dev_err(rtd->card->dev, "ASoC: machine prepare error:" " %d\n", ret); goto out; } } for_each_rtdcom(rtd, rtdcom) { component = rtdcom->component; if (!component->driver->ops || !component->driver->ops->prepare) continue; ret = component->driver->ops->prepare(substream); if (ret < 0) { dev_err(component->dev, "ASoC: platform prepare error: %d\n", ret); goto out; } } for_each_rtd_codec_dai(rtd, i, codec_dai) { if (codec_dai->driver->ops->prepare) { ret = codec_dai->driver->ops->prepare(substream, codec_dai); if (ret < 0) { dev_err(codec_dai->dev, "ASoC: codec DAI prepare error: %d\n", ret); goto out; } } } if (cpu_dai->driver->ops->prepare) { ret = cpu_dai->driver->ops->prepare(substream, cpu_dai); 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 */ if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK && rtd->pop_wait) { rtd->pop_wait = 0; cancel_delayed_work(&rtd->delayed_work); } snd_soc_dapm_stream_event(rtd, substream->stream, SND_SOC_DAPM_STREAM_START); 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); out: mutex_unlock(&rtd->pcm_mutex); return ret; } static void soc_pcm_codec_params_fixup(struct snd_pcm_hw_params *params, unsigned int mask) { struct snd_interval *interval; int channels = hweight_long(mask); interval = hw_param_interval(params, SNDRV_PCM_HW_PARAM_CHANNELS); interval->min = channels; interval->max = channels; } int soc_dai_hw_params(struct snd_pcm_substream *substream, struct snd_pcm_hw_params *params, struct snd_soc_dai *dai) { struct snd_soc_pcm_runtime *rtd = substream->private_data; int ret; /* perform any topology hw_params fixups before DAI */ if (rtd->dai_link->be_hw_params_fixup) { ret = rtd->dai_link->be_hw_params_fixup(rtd, params); if (ret < 0) { dev_err(rtd->dev, "ASoC: hw_params topology fixup failed %d\n", ret); return ret; } } if (dai->driver->ops->hw_params) { ret = dai->driver->ops->hw_params(substream, params, dai); if (ret < 0) { dev_err(dai->dev, "ASoC: can't set %s hw params: %d\n", dai->name, ret); return ret; } } return 0; } static int soc_pcm_components_hw_free(struct snd_pcm_substream *substream, struct snd_soc_component *last) { struct snd_soc_pcm_runtime *rtd = substream->private_data; struct snd_soc_rtdcom_list *rtdcom; struct snd_soc_component *component; for_each_rtdcom(rtd, rtdcom) { component = rtdcom->component; if (component == last) break; if (!component->driver->ops || !component->driver->ops->hw_free) continue; component->driver->ops->hw_free(substream); } return 0; } /* * Called by ALSA when the hardware params are set by application. This * function can also be called multiple times and can allocate buffers * (using snd_pcm_lib_* ). It's non-atomic. */ static int soc_pcm_hw_params(struct snd_pcm_substream *substream, struct snd_pcm_hw_params *params) { struct snd_soc_pcm_runtime *rtd = substream->private_data; struct snd_soc_component *component; struct snd_soc_rtdcom_list *rtdcom; struct snd_soc_dai *cpu_dai = rtd->cpu_dai; struct snd_soc_dai *codec_dai; int i, ret = 0; mutex_lock_nested(&rtd->pcm_mutex, rtd->pcm_subclass); if (rtd->dai_link->ops->hw_params) { ret = rtd->dai_link->ops->hw_params(substream, params); if (ret < 0) { dev_err(rtd->card->dev, "ASoC: machine hw_params" " failed: %d\n", ret); goto out; } } for_each_rtd_codec_dai(rtd, i, codec_dai) { struct snd_pcm_hw_params codec_params; /* * Skip CODECs which don't support the current stream type, * the idea being that if a CODEC is not used for the currently * set up transfer direction, it should not need to be * configured, especially since the configuration used might * not even be supported by that CODEC. There may be cases * however where a CODEC needs to be set up although it is * actually not being used for the transfer, e.g. if a * capture-only CODEC is acting as an LRCLK and/or BCLK master * for the DAI link including a playback-only CODEC. * If this becomes necessary, we will have to augment the * machine driver setup with information on how to act, so * we can do the right thing here. */ if (!snd_soc_dai_stream_valid(codec_dai, substream->stream)) continue; /* copy params for each codec */ codec_params = *params; /* fixup params based on TDM slot masks */ if (codec_dai->tx_mask) soc_pcm_codec_params_fixup(&codec_params, codec_dai->tx_mask); if (codec_dai->rx_mask) soc_pcm_codec_params_fixup(&codec_params, codec_dai->rx_mask); ret = soc_dai_hw_params(substream, &codec_params, codec_dai); if(ret < 0) goto codec_err; codec_dai->rate = params_rate(&codec_params); codec_dai->channels = params_channels(&codec_params); codec_dai->sample_bits = snd_pcm_format_physical_width( params_format(&codec_params)); } ret = soc_dai_hw_params(substream, params, cpu_dai); if (ret < 0) goto interface_err; for_each_rtdcom(rtd, rtdcom) { component = rtdcom->component; if (!component->driver->ops || !component->driver->ops->hw_params) continue; ret = component->driver->ops->hw_params(substream, params); if (ret < 0) { dev_err(component->dev, "ASoC: %s hw params failed: %d\n", component->name, ret); goto component_err; } } component = NULL; /* 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)); ret = soc_pcm_params_symmetry(substream, params); if (ret) goto component_err; out: mutex_unlock(&rtd->pcm_mutex); return ret; component_err: soc_pcm_components_hw_free(substream, component); if (cpu_dai->driver->ops->hw_free) cpu_dai->driver->ops->hw_free(substream, cpu_dai); interface_err: i = rtd->num_codecs; codec_err: for_each_rtd_codec_dai_rollback(rtd, i, codec_dai) { if (codec_dai->driver->ops->hw_free) codec_dai->driver->ops->hw_free(substream, codec_dai); codec_dai->rate = 0; } if (rtd->dai_link->ops->hw_free) rtd->dai_link->ops->hw_free(substream); mutex_unlock(&rtd->pcm_mutex); return ret; } /* * Frees resources allocated by hw_params, can be called multiple times */ 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 *codec_dai; bool playback = substream->stream == SNDRV_PCM_STREAM_PLAYBACK; int i; mutex_lock_nested(&rtd->pcm_mutex, rtd->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_codec_dai(rtd, i, codec_dai) { if (codec_dai->active == 1) { codec_dai->rate = 0; codec_dai->channels = 0; codec_dai->sample_bits = 0; } } /* apply codec digital mute */ for_each_rtd_codec_dai(rtd, i, codec_dai) { if ((playback && codec_dai->playback_active == 1) || (!playback && codec_dai->capture_active == 1)) snd_soc_dai_digital_mute(codec_dai, 1, substream->stream); } /* free any machine hw params */ if (rtd->dai_link->ops->hw_free) rtd->dai_link->ops->hw_free(substream); /* free any component resources */ soc_pcm_components_hw_free(substream, NULL); /* now free hw params for the DAIs */ for_each_rtd_codec_dai(rtd, i, codec_dai) { if (codec_dai->driver->ops->hw_free) codec_dai->driver->ops->hw_free(substream, codec_dai); } if (cpu_dai->driver->ops->hw_free) cpu_dai->driver->ops->hw_free(substream, cpu_dai); mutex_unlock(&rtd->pcm_mutex); return 0; } static int soc_pcm_trigger(struct snd_pcm_substream *substream, int cmd) { struct snd_soc_pcm_runtime *rtd = substream->private_data; struct snd_soc_component *component; struct snd_soc_rtdcom_list *rtdcom; struct snd_soc_dai *cpu_dai = rtd->cpu_dai; struct snd_soc_dai *codec_dai; int i, ret; for_each_rtd_codec_dai(rtd, i, codec_dai) { if (codec_dai->driver->ops->trigger) { ret = codec_dai->driver->ops->trigger(substream, cmd, codec_dai); if (ret < 0) return ret; } } for_each_rtdcom(rtd, rtdcom) { component = rtdcom->component; if (!component->driver->ops || !component->driver->ops->trigger) continue; ret = component->driver->ops->trigger(substream, cmd); if (ret < 0) return ret; } if (cpu_dai->driver->ops->trigger) { ret = cpu_dai->driver->ops->trigger(substream, cmd, cpu_dai); if (ret < 0) return ret; } if (rtd->dai_link->ops->trigger) { ret = rtd->dai_link->ops->trigger(substream, cmd); if (ret < 0) return ret; } return 0; } 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 *codec_dai; int i, ret; for_each_rtd_codec_dai(rtd, i, codec_dai) { if (codec_dai->driver->ops->bespoke_trigger) { ret = codec_dai->driver->ops->bespoke_trigger(substream, cmd, codec_dai); if (ret < 0) return ret; } } if (cpu_dai->driver->ops->bespoke_trigger) { ret = cpu_dai->driver->ops->bespoke_trigger(substream, cmd, cpu_dai); if (ret < 0) return ret; } return 0; } /* * soc level wrapper for pointer callback * If cpu_dai, codec_dai, component driver has the delay callback, then * the runtime->delay will be updated accordingly. */ 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_component *component; struct snd_soc_rtdcom_list *rtdcom; struct snd_soc_dai *cpu_dai = rtd->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; int i; /* clearing the previous total delay */ runtime->delay = 0; for_each_rtdcom(rtd, rtdcom) { component = rtdcom->component; if (!component->driver->ops || !component->driver->ops->pointer) continue; /* FIXME: use 1st pointer */ offset = component->driver->ops->pointer(substream); break; } /* base delay if assigned in pointer callback */ delay = runtime->delay; if (cpu_dai->driver->ops->delay) delay += cpu_dai->driver->ops->delay(substream, cpu_dai); for_each_rtd_codec_dai(rtd, i, codec_dai) { if (codec_dai->driver->ops->delay) codec_delay = max(codec_delay, codec_dai->driver->ops->delay(substream, codec_dai)); } delay += codec_delay; runtime->delay = delay; return offset; } /* connect a FE and BE */ static int dpcm_be_connect(struct snd_soc_pcm_runtime *fe, struct snd_soc_pcm_runtime *be, int stream) { struct snd_soc_dpcm *dpcm; /* only add new dpcms */ for_each_dpcm_be(fe, stream, dpcm) { if (dpcm->be == be && dpcm->fe == fe) return 0; } dpcm = kzalloc(sizeof(struct snd_soc_dpcm), GFP_KERNEL); if (!dpcm) return -ENOMEM; dpcm->be = be; dpcm->fe = fe; be->dpcm[stream].runtime = fe->dpcm[stream].runtime; dpcm->state = SND_SOC_DPCM_LINK_STATE_NEW; list_add(&dpcm->list_be, &fe->dpcm[stream].be_clients); list_add(&dpcm->list_fe, &be->dpcm[stream].fe_clients); dev_dbg(fe->dev, "connected new DPCM %s path %s %s %s\n", stream ? "capture" : "playback", fe->dai_link->name, stream ? "<-" : "->", be->dai_link->name); #ifdef CONFIG_DEBUG_FS if (fe->debugfs_dpcm_root) dpcm->debugfs_state = debugfs_create_u32(be->dai_link->name, 0644, fe->debugfs_dpcm_root, &dpcm->state); #endif return 1; } /* reparent a BE onto another FE */ static void dpcm_be_reparent(struct snd_soc_pcm_runtime *fe, struct snd_soc_pcm_runtime *be, int stream) { struct snd_soc_dpcm *dpcm; struct snd_pcm_substream *fe_substream, *be_substream; /* reparent if BE is connected to other FEs */ if (!be->dpcm[stream].users) return; be_substream = snd_soc_dpcm_get_substream(be, stream); for_each_dpcm_fe(be, stream, dpcm) { if (dpcm->fe == fe) continue; dev_dbg(fe->dev, "reparent %s path %s %s %s\n", stream ? "capture" : "playback", dpcm->fe->dai_link->name, stream ? "<-" : "->", dpcm->be->dai_link->name); fe_substream = snd_soc_dpcm_get_substream(dpcm->fe, stream); be_substream->runtime = fe_substream->runtime; break; } } /* disconnect a BE and FE */ void dpcm_be_disconnect(struct snd_soc_pcm_runtime *fe, int stream) { struct snd_soc_dpcm *dpcm, *d; for_each_dpcm_be_safe(fe, stream, dpcm, d) { dev_dbg(fe->dev, "ASoC: BE %s disconnect check for %s\n", stream ? "capture" : "playback", dpcm->be->dai_link->name); if (dpcm->state != SND_SOC_DPCM_LINK_STATE_FREE) continue; dev_dbg(fe->dev, "freed DSP %s path %s %s %s\n", stream ? "capture" : "playback", fe->dai_link->name, stream ? "<-" : "->", dpcm->be->dai_link->name); /* BEs still alive need new FE */ dpcm_be_reparent(fe, dpcm->be, stream); #ifdef CONFIG_DEBUG_FS debugfs_remove(dpcm->debugfs_state); #endif list_del(&dpcm->list_be); list_del(&dpcm->list_fe); kfree(dpcm); } } /* get BE for DAI widget and stream */ static struct snd_soc_pcm_runtime *dpcm_get_be(struct snd_soc_card *card, struct snd_soc_dapm_widget *widget, int stream) { struct snd_soc_pcm_runtime *be; struct snd_soc_dai *dai; int i; dev_dbg(card->dev, "ASoC: find BE for widget %s\n", widget->name); if (stream == SNDRV_PCM_STREAM_PLAYBACK) { for_each_card_rtds(card, be) { 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)"); if (be->cpu_dai->playback_widget == widget) return be; for_each_rtd_codec_dai(be, i, dai) { if (dai->playback_widget == widget) return be; } } } else { for_each_card_rtds(card, be) { 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)"); if (be->cpu_dai->capture_widget == widget) return be; for_each_rtd_codec_dai(be, i, dai) { if (dai->capture_widget == widget) return be; } } } /* dai link name and stream name set correctly ? */ dev_err(card->dev, "ASoC: can't get %s BE for %s\n", stream ? "capture" : "playback", widget->name); return NULL; } static inline struct snd_soc_dapm_widget * dai_get_widget(struct snd_soc_dai *dai, int stream) { if (stream == SNDRV_PCM_STREAM_PLAYBACK) return dai->playback_widget; else return dai->capture_widget; } static int widget_in_list(struct snd_soc_dapm_widget_list *list, struct snd_soc_dapm_widget *widget) { int i; for (i = 0; i < list->num_widgets; i++) { if (widget == list->widgets[i]) return 1; } return 0; } static bool dpcm_end_walk_at_be(struct snd_soc_dapm_widget *widget, enum snd_soc_dapm_direction dir) { struct snd_soc_card *card = widget->dapm->card; struct snd_soc_pcm_runtime *rtd; struct snd_soc_dai *dai; int i; if (dir == SND_SOC_DAPM_DIR_OUT) { for_each_card_rtds(card, rtd) { if (!rtd->dai_link->no_pcm) continue; if (rtd->cpu_dai->playback_widget == widget) return true; for_each_rtd_codec_dai(rtd, i, dai) { if (dai->playback_widget == widget) return true; } } } else { /* SND_SOC_DAPM_DIR_IN */ for_each_card_rtds(card, rtd) { if (!rtd->dai_link->no_pcm) continue; if (rtd->cpu_dai->capture_widget == widget) return true; for_each_rtd_codec_dai(rtd, i, dai) { if (dai->capture_widget == widget) return true; } } } return false; } int dpcm_path_get(struct snd_soc_pcm_runtime *fe, int stream, struct snd_soc_dapm_widget_list **list) { struct snd_soc_dai *cpu_dai = fe->cpu_dai; int paths; /* 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); dev_dbg(fe->dev, "ASoC: found %d audio %s paths\n", paths, stream ? "capture" : "playback"); return paths; } static int dpcm_prune_paths(struct snd_soc_pcm_runtime *fe, int stream, struct snd_soc_dapm_widget_list **list_) { struct snd_soc_dpcm *dpcm; struct snd_soc_dapm_widget_list *list = *list_; struct snd_soc_dapm_widget *widget; struct snd_soc_dai *dai; int prune = 0; /* Destroy any old FE <--> BE connections */ for_each_dpcm_be(fe, stream, dpcm) { unsigned int i; /* is there a valid CPU DAI widget for this BE */ widget = dai_get_widget(dpcm->be->cpu_dai, stream); /* prune the BE if it's no longer in our active list */ if (widget && widget_in_list(list, widget)) continue; /* is there a valid CODEC DAI widget for this BE */ for_each_rtd_codec_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)) continue; } dev_dbg(fe->dev, "ASoC: pruning %s BE %s for %s\n", stream ? "capture" : "playback", dpcm->be->dai_link->name, fe->dai_link->name); dpcm->state = SND_SOC_DPCM_LINK_STATE_FREE; dpcm->be->dpcm[stream].runtime_update = SND_SOC_DPCM_UPDATE_BE; prune++; } dev_dbg(fe->dev, "ASoC: found %d old BE paths for pruning\n", prune); return prune; } static int dpcm_add_paths(struct snd_soc_pcm_runtime *fe, int stream, struct snd_soc_dapm_widget_list **list_) { struct snd_soc_card *card = fe->card; struct snd_soc_dapm_widget_list *list = *list_; struct snd_soc_pcm_runtime *be; int i, new = 0, err; /* Create any new FE <--> BE connections */ for (i = 0; i < list->num_widgets; i++) { switch (list->widgets[i]->id) { case snd_soc_dapm_dai_in: if (stream != SNDRV_PCM_STREAM_PLAYBACK) continue; break; case snd_soc_dapm_dai_out: if (stream != SNDRV_PCM_STREAM_CAPTURE) continue; break; default: continue; } /* is there a valid BE rtd for this widget */ be = dpcm_get_be(card, list->widgets[i], stream); if (!be) { dev_err(fe->dev, "ASoC: no BE found for %s\n", list->widgets[i]->name); continue; } /* make sure BE is a real BE */ if (!be->dai_link->no_pcm) continue; /* don't connect if FE is not running */ if (!fe->dpcm[stream].runtime && !fe->fe_compr) continue; /* newly connected FE and BE */ err = dpcm_be_connect(fe, be, stream); if (err < 0) { dev_err(fe->dev, "ASoC: can't connect %s\n", list->widgets[i]->name); break; } else if (err == 0) /* already connected */ continue; /* new */ be->dpcm[stream].runtime_update = SND_SOC_DPCM_UPDATE_BE; new++; } dev_dbg(fe->dev, "ASoC: found %d new BE paths\n", new); return new; } /* * Find the corresponding BE DAIs that source or sink audio to this * FE substream. */ int dpcm_process_paths(struct snd_soc_pcm_runtime *fe, int stream, struct snd_soc_dapm_widget_list **list, int new) { if (new) return dpcm_add_paths(fe, stream, list); else return dpcm_prune_paths(fe, stream, list); } void dpcm_clear_pending_state(struct snd_soc_pcm_runtime *fe, int stream) { struct snd_soc_dpcm *dpcm; for_each_dpcm_be(fe, stream, dpcm) dpcm->be->dpcm[stream].runtime_update = SND_SOC_DPCM_UPDATE_NO; } static void dpcm_be_dai_startup_unwind(struct snd_soc_pcm_runtime *fe, int stream) { struct snd_soc_dpcm *dpcm; /* disable any enabled and non active backends */ for_each_dpcm_be(fe, stream, dpcm) { struct snd_soc_pcm_runtime *be = dpcm->be; struct snd_pcm_substream *be_substream = snd_soc_dpcm_get_substream(be, stream); if (be->dpcm[stream].users == 0) dev_err(be->dev, "ASoC: no users %s at close - state %d\n", stream ? "capture" : "playback", be->dpcm[stream].state); if (--be->dpcm[stream].users != 0) continue; if (be->dpcm[stream].state != SND_SOC_DPCM_STATE_OPEN) continue; soc_pcm_close(be_substream); be_substream->runtime = NULL; be->dpcm[stream].state = SND_SOC_DPCM_STATE_CLOSE; } } int dpcm_be_dai_startup(struct snd_soc_pcm_runtime *fe, int stream) { struct snd_soc_dpcm *dpcm; int err, count = 0; /* only startup BE DAIs that are either sinks or sources to this FE DAI */ for_each_dpcm_be(fe, stream, dpcm) { struct snd_soc_pcm_runtime *be = dpcm->be; struct snd_pcm_substream *be_substream = snd_soc_dpcm_get_substream(be, stream); if (!be_substream) { dev_err(be->dev, "ASoC: no backend %s stream\n", stream ? "capture" : "playback"); continue; } /* is this op for this BE ? */ if (!snd_soc_dpcm_be_can_update(fe, be, stream)) continue; /* first time the dpcm is open ? */ if (be->dpcm[stream].users == DPCM_MAX_BE_USERS) dev_err(be->dev, "ASoC: too many users %s at open %d\n", stream ? "capture" : "playback", be->dpcm[stream].state); if (be->dpcm[stream].users++ != 0) continue; if ((be->dpcm[stream].state != SND_SOC_DPCM_STATE_NEW) && (be->dpcm[stream].state != SND_SOC_DPCM_STATE_CLOSE)) continue; dev_dbg(be->dev, "ASoC: open %s BE %s\n", stream ? "capture" : "playback", be->dai_link->name); be_substream->runtime = be->dpcm[stream].runtime; err = soc_pcm_open(be_substream); if (err < 0) { dev_err(be->dev, "ASoC: BE open failed %d\n", err); be->dpcm[stream].users--; if (be->dpcm[stream].users < 0) dev_err(be->dev, "ASoC: no users %s at unwind %d\n", stream ? "capture" : "playback", be->dpcm[stream].state); be->dpcm[stream].state = SND_SOC_DPCM_STATE_CLOSE; goto unwind; } be->dpcm[stream].state = SND_SOC_DPCM_STATE_OPEN; count++; } return count; unwind: /* disable any enabled and non active backends */ for_each_dpcm_be_rollback(fe, stream, dpcm) { struct snd_soc_pcm_runtime *be = dpcm->be; struct snd_pcm_substream *be_substream = snd_soc_dpcm_get_substream(be, stream); if (!snd_soc_dpcm_be_can_update(fe, be, stream)) continue; if (be->dpcm[stream].users == 0) dev_err(be->dev, "ASoC: no users %s at close %d\n", stream ? "capture" : "playback", be->dpcm[stream].state); if (--be->dpcm[stream].users != 0) continue; if (be->dpcm[stream].state != SND_SOC_DPCM_STATE_OPEN) continue; soc_pcm_close(be_substream); be_substream->runtime = NULL; be->dpcm[stream].state = SND_SOC_DPCM_STATE_CLOSE; } return err; } static void dpcm_init_runtime_hw(struct snd_pcm_runtime *runtime, struct snd_soc_pcm_stream *stream) { runtime->hw.rate_min = stream->rate_min; runtime->hw.rate_max = min_not_zero(stream->rate_max, UINT_MAX); runtime->hw.channels_min = stream->channels_min; runtime->hw.channels_max = stream->channels_max; if (runtime->hw.formats) runtime->hw.formats &= stream->formats; else runtime->hw.formats = stream->formats; runtime->hw.rates = stream->rates; } static void dpcm_runtime_merge_format(struct snd_pcm_substream *substream, u64 *formats) { struct snd_soc_pcm_runtime *fe = substream->private_data; struct snd_soc_dpcm *dpcm; struct snd_soc_dai *dai; int stream = substream->stream; if (!fe->dai_link->dpcm_merged_format) return; /* * It returns merged BE codec format * if FE want to use it (= dpcm_merged_format) */ for_each_dpcm_be(fe, stream, dpcm) { struct snd_soc_pcm_runtime *be = dpcm->be; struct snd_soc_dai_driver *codec_dai_drv; struct snd_soc_pcm_stream *codec_stream; int i; for_each_rtd_codec_dai(be, i, dai) { /* * Skip CODECs 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; codec_dai_drv = dai->driver; if (stream == SNDRV_PCM_STREAM_PLAYBACK) codec_stream = &codec_dai_drv->playback; else codec_stream = &codec_dai_drv->capture; *formats &= codec_stream->formats; } } } static void dpcm_runtime_merge_chan(struct snd_pcm_substream *substream, unsigned int *channels_min, unsigned int *channels_max) { struct snd_soc_pcm_runtime *fe = substream->private_data; struct snd_soc_dpcm *dpcm; int stream = substream->stream; if (!fe->dai_link->dpcm_merged_chan) return; /* * It returns merged BE codec channel; * if FE want to use it (= dpcm_merged_chan) */ 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 *codec_dai_drv; struct snd_soc_pcm_stream *codec_stream; struct snd_soc_pcm_stream *cpu_stream; 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); /* * chan min/max cannot be enforced if there are multiple CODEC * DAIs connected to a single CPU DAI, use CPU DAI's directly */ if (be->num_codecs == 1) { codec_dai_drv = be->codec_dais[0]->driver; if (stream == SNDRV_PCM_STREAM_PLAYBACK) codec_stream = &codec_dai_drv->playback; else codec_stream = &codec_dai_drv->capture; *channels_min = max(*channels_min, codec_stream->channels_min); *channels_max = min(*channels_max, codec_stream->channels_max); } } } static void dpcm_runtime_merge_rate(struct snd_pcm_substream *substream, unsigned int *rates, unsigned int *rate_min, unsigned int *rate_max) { struct snd_soc_pcm_runtime *fe = substream->private_data; struct snd_soc_dpcm *dpcm; int stream = substream->stream; if (!fe->dai_link->dpcm_merged_rate) return; /* * It returns merged BE codec channel; * if FE want to use it (= dpcm_merged_chan) */ 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 *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; *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) { /* * Skip CODECs 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; codec_dai_drv = dai->driver; if (stream == SNDRV_PCM_STREAM_PLAYBACK) codec_stream = &codec_dai_drv->playback; else codec_stream = &codec_dai_drv->capture; *rate_min = max(*rate_min, codec_stream->rate_min); *rate_max = min_not_zero(*rate_max, codec_stream->rate_max); *rates = snd_pcm_rate_mask_intersect(*rates, codec_stream->rates); } } } 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; 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, &runtime->hw.channels_max); dpcm_runtime_merge_rate(substream, &runtime->hw.rates, &runtime->hw.rate_min, &runtime->hw.rate_max); } static int dpcm_fe_dai_do_trigger(struct snd_pcm_substream *substream, int cmd); /* Set FE's runtime_update state; the state is protected via PCM stream lock * for avoiding the race with trigger callback. * If the state is unset and a trigger is pending while the previous operation, * process the pending trigger action here. */ static void dpcm_set_fe_update_state(struct snd_soc_pcm_runtime *fe, int stream, enum snd_soc_dpcm_update state) { struct snd_pcm_substream *substream = snd_soc_dpcm_get_substream(fe, stream); snd_pcm_stream_lock_irq(substream); if (state == SND_SOC_DPCM_UPDATE_NO && fe->dpcm[stream].trigger_pending) { dpcm_fe_dai_do_trigger(substream, fe->dpcm[stream].trigger_pending - 1); fe->dpcm[stream].trigger_pending = 0; } fe->dpcm[stream].runtime_update = state; snd_pcm_stream_unlock_irq(substream); } static int dpcm_apply_symmetry(struct snd_pcm_substream *fe_substream, int stream) { struct snd_soc_dpcm *dpcm; struct snd_soc_pcm_runtime *fe = fe_substream->private_data; struct snd_soc_dai *fe_cpu_dai = fe->cpu_dai; int err; /* apply symmetry for FE */ if (soc_pcm_has_symmetry(fe_substream)) fe_substream->runtime->hw.info |= SNDRV_PCM_INFO_JOINT_DUPLEX; /* Symmetry only applies if we've got an active stream. */ if (fe_cpu_dai->active) { err = soc_pcm_apply_symmetry(fe_substream, fe_cpu_dai); if (err < 0) return err; } /* apply symmetry for BE */ for_each_dpcm_be(fe, stream, dpcm) { struct snd_soc_pcm_runtime *be = dpcm->be; struct snd_pcm_substream *be_substream = snd_soc_dpcm_get_substream(be, stream); struct snd_soc_pcm_runtime *rtd = be_substream->private_data; struct snd_soc_dai *codec_dai; int i; if (rtd->dai_link->be_hw_params_fixup) continue; if (soc_pcm_has_symmetry(be_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_codec_dai(rtd, i, codec_dai) { if (codec_dai->active) { err = soc_pcm_apply_symmetry(fe_substream, codec_dai); if (err < 0) return err; } } } return 0; } static int dpcm_fe_dai_startup(struct snd_pcm_substream *fe_substream) { struct snd_soc_pcm_runtime *fe = fe_substream->private_data; struct snd_pcm_runtime *runtime = fe_substream->runtime; int stream = fe_substream->stream, ret = 0; dpcm_set_fe_update_state(fe, stream, SND_SOC_DPCM_UPDATE_FE); ret = dpcm_be_dai_startup(fe, fe_substream->stream); if (ret < 0) { dev_err(fe->dev,"ASoC: failed to start some BEs %d\n", ret); goto be_err; } dev_dbg(fe->dev, "ASoC: open FE %s\n", fe->dai_link->name); /* start the DAI frontend */ ret = soc_pcm_open(fe_substream); if (ret < 0) { dev_err(fe->dev,"ASoC: failed to start FE %d\n", ret); goto unwind; } fe->dpcm[stream].state = SND_SOC_DPCM_STATE_OPEN; dpcm_set_fe_runtime(fe_substream); snd_pcm_limit_hw_rates(runtime); ret = dpcm_apply_symmetry(fe_substream, stream); if (ret < 0) { dev_err(fe->dev, "ASoC: failed to apply dpcm symmetry %d\n", ret); goto unwind; } dpcm_set_fe_update_state(fe, stream, SND_SOC_DPCM_UPDATE_NO); return 0; unwind: dpcm_be_dai_startup_unwind(fe, fe_substream->stream); be_err: dpcm_set_fe_update_state(fe, stream, SND_SOC_DPCM_UPDATE_NO); return ret; } int dpcm_be_dai_shutdown(struct snd_soc_pcm_runtime *fe, int stream) { struct snd_soc_dpcm *dpcm; /* only shutdown BEs that are either sinks or sources to this FE DAI */ for_each_dpcm_be(fe, stream, dpcm) { struct snd_soc_pcm_runtime *be = dpcm->be; struct snd_pcm_substream *be_substream = snd_soc_dpcm_get_substream(be, stream); /* is this op for this BE ? */ if (!snd_soc_dpcm_be_can_update(fe, be, stream)) continue; if (be->dpcm[stream].users == 0) dev_err(be->dev, "ASoC: no users %s at close - state %d\n", stream ? "capture" : "playback", be->dpcm[stream].state); if (--be->dpcm[stream].users != 0) continue; if ((be->dpcm[stream].state != SND_SOC_DPCM_STATE_HW_FREE) && (be->dpcm[stream].state != SND_SOC_DPCM_STATE_OPEN)) { soc_pcm_hw_free(be_substream); be->dpcm[stream].state = SND_SOC_DPCM_STATE_HW_FREE; } dev_dbg(be->dev, "ASoC: close BE %s\n", be->dai_link->name); soc_pcm_close(be_substream); be_substream->runtime = NULL; be->dpcm[stream].state = SND_SOC_DPCM_STATE_CLOSE; } return 0; } static int dpcm_fe_dai_shutdown(struct snd_pcm_substream *substream) { struct snd_soc_pcm_runtime *fe = substream->private_data; int stream = substream->stream; dpcm_set_fe_update_state(fe, stream, SND_SOC_DPCM_UPDATE_FE); /* shutdown the BEs */ dpcm_be_dai_shutdown(fe, substream->stream); dev_dbg(fe->dev, "ASoC: close FE %s\n", fe->dai_link->name); /* now shutdown the frontend */ soc_pcm_close(substream); /* run the stream event for each BE */ dpcm_dapm_stream_event(fe, stream, SND_SOC_DAPM_STREAM_STOP); fe->dpcm[stream].state = SND_SOC_DPCM_STATE_CLOSE; dpcm_set_fe_update_state(fe, stream, SND_SOC_DPCM_UPDATE_NO); return 0; } int dpcm_be_dai_hw_free(struct snd_soc_pcm_runtime *fe, int stream) { struct snd_soc_dpcm *dpcm; /* only hw_params backends that are either sinks or sources * to this frontend DAI */ for_each_dpcm_be(fe, stream, dpcm) { struct snd_soc_pcm_runtime *be = dpcm->be; struct snd_pcm_substream *be_substream = snd_soc_dpcm_get_substream(be, stream); /* is this op for this BE ? */ if (!snd_soc_dpcm_be_can_update(fe, be, stream)) continue; /* only free hw when no longer used - check all FEs */ if (!snd_soc_dpcm_can_be_free_stop(fe, be, stream)) continue; /* do not free hw if this BE is used by other FE */ if (be->dpcm[stream].users > 1) continue; if ((be->dpcm[stream].state != SND_SOC_DPCM_STATE_HW_PARAMS) && (be->dpcm[stream].state != SND_SOC_DPCM_STATE_PREPARE) && (be->dpcm[stream].state != SND_SOC_DPCM_STATE_HW_FREE) && (be->dpcm[stream].state != SND_SOC_DPCM_STATE_PAUSED) && (be->dpcm[stream].state != SND_SOC_DPCM_STATE_STOP) && (be->dpcm[stream].state != SND_SOC_DPCM_STATE_SUSPEND)) continue; dev_dbg(be->dev, "ASoC: hw_free BE %s\n", be->dai_link->name); soc_pcm_hw_free(be_substream); be->dpcm[stream].state = SND_SOC_DPCM_STATE_HW_FREE; } return 0; } static int dpcm_fe_dai_hw_free(struct snd_pcm_substream *substream) { struct snd_soc_pcm_runtime *fe = substream->private_data; int err, stream = substream->stream; mutex_lock_nested(&fe->card->mutex, SND_SOC_CARD_CLASS_RUNTIME); dpcm_set_fe_update_state(fe, stream, SND_SOC_DPCM_UPDATE_FE); dev_dbg(fe->dev, "ASoC: hw_free FE %s\n", fe->dai_link->name); /* call hw_free on the frontend */ err = soc_pcm_hw_free(substream); if (err < 0) dev_err(fe->dev,"ASoC: hw_free FE %s failed\n", fe->dai_link->name); /* only hw_params backends that are either sinks or sources * to this frontend DAI */ err = dpcm_be_dai_hw_free(fe, stream); fe->dpcm[stream].state = SND_SOC_DPCM_STATE_HW_FREE; dpcm_set_fe_update_state(fe, stream, SND_SOC_DPCM_UPDATE_NO); mutex_unlock(&fe->card->mutex); return 0; } int dpcm_be_dai_hw_params(struct snd_soc_pcm_runtime *fe, int stream) { struct snd_soc_dpcm *dpcm; int ret; for_each_dpcm_be(fe, stream, dpcm) { struct snd_soc_pcm_runtime *be = dpcm->be; struct snd_pcm_substream *be_substream = snd_soc_dpcm_get_substream(be, stream); /* is this op for this BE ? */ if (!snd_soc_dpcm_be_can_update(fe, be, stream)) continue; /* copy params for each dpcm */ memcpy(&dpcm->hw_params, &fe->dpcm[stream].hw_params, sizeof(struct snd_pcm_hw_params)); /* perform any hw_params fixups */ if (be->dai_link->be_hw_params_fixup) { ret = be->dai_link->be_hw_params_fixup(be, &dpcm->hw_params); if (ret < 0) { dev_err(be->dev, "ASoC: hw_params BE fixup failed %d\n", ret); goto unwind; } } /* only allow hw_params() if no connected FEs are running */ if (!snd_soc_dpcm_can_be_params(fe, be, stream)) continue; if ((be->dpcm[stream].state != SND_SOC_DPCM_STATE_OPEN) && (be->dpcm[stream].state != SND_SOC_DPCM_STATE_HW_PARAMS) && (be->dpcm[stream].state != SND_SOC_DPCM_STATE_HW_FREE)) continue; dev_dbg(be->dev, "ASoC: hw_params BE %s\n", be->dai_link->name); ret = soc_pcm_hw_params(be_substream, &dpcm->hw_params); if (ret < 0) { dev_err(dpcm->be->dev, "ASoC: hw_params BE failed %d\n", ret); goto unwind; } be->dpcm[stream].state = SND_SOC_DPCM_STATE_HW_PARAMS; } return 0; unwind: /* disable any enabled and non active backends */ for_each_dpcm_be_rollback(fe, stream, dpcm) { struct snd_soc_pcm_runtime *be = dpcm->be; struct snd_pcm_substream *be_substream = snd_soc_dpcm_get_substream(be, stream); if (!snd_soc_dpcm_be_can_update(fe, be, stream)) continue; /* only allow hw_free() if no connected FEs are running */ if (!snd_soc_dpcm_can_be_free_stop(fe, be, stream)) continue; if ((be->dpcm[stream].state != SND_SOC_DPCM_STATE_OPEN) && (be->dpcm[stream].state != SND_SOC_DPCM_STATE_HW_PARAMS) && (be->dpcm[stream].state != SND_SOC_DPCM_STATE_HW_FREE) && (be->dpcm[stream].state != SND_SOC_DPCM_STATE_STOP)) continue; soc_pcm_hw_free(be_substream); } return ret; } static int dpcm_fe_dai_hw_params(struct snd_pcm_substream *substream, struct snd_pcm_hw_params *params) { struct snd_soc_pcm_runtime *fe = substream->private_data; int ret, stream = substream->stream; mutex_lock_nested(&fe->card->mutex, SND_SOC_CARD_CLASS_RUNTIME); dpcm_set_fe_update_state(fe, stream, SND_SOC_DPCM_UPDATE_FE); memcpy(&fe->dpcm[substream->stream].hw_params, params, sizeof(struct snd_pcm_hw_params)); ret = dpcm_be_dai_hw_params(fe, substream->stream); if (ret < 0) { dev_err(fe->dev,"ASoC: hw_params BE failed %d\n", ret); goto out; } dev_dbg(fe->dev, "ASoC: hw_params FE %s rate %d chan %x fmt %d\n", fe->dai_link->name, params_rate(params), params_channels(params), params_format(params)); /* call hw_params on the frontend */ ret = soc_pcm_hw_params(substream, params); if (ret < 0) { dev_err(fe->dev,"ASoC: hw_params FE failed %d\n", ret); dpcm_be_dai_hw_free(fe, stream); } else fe->dpcm[stream].state = SND_SOC_DPCM_STATE_HW_PARAMS; out: dpcm_set_fe_update_state(fe, stream, SND_SOC_DPCM_UPDATE_NO); mutex_unlock(&fe->card->mutex); return ret; } static int dpcm_do_trigger(struct snd_soc_dpcm *dpcm, struct snd_pcm_substream *substream, int cmd) { int ret; dev_dbg(dpcm->be->dev, "ASoC: trigger BE %s cmd %d\n", dpcm->be->dai_link->name, cmd); ret = soc_pcm_trigger(substream, cmd); if (ret < 0) dev_err(dpcm->be->dev,"ASoC: trigger BE failed %d\n", ret); return ret; } int dpcm_be_dai_trigger(struct snd_soc_pcm_runtime *fe, int stream, int cmd) { struct snd_soc_dpcm *dpcm; int ret = 0; for_each_dpcm_be(fe, stream, dpcm) { struct snd_soc_pcm_runtime *be = dpcm->be; struct snd_pcm_substream *be_substream = snd_soc_dpcm_get_substream(be, stream); /* is this op for this BE ? */ if (!snd_soc_dpcm_be_can_update(fe, be, stream)) continue; switch (cmd) { case SNDRV_PCM_TRIGGER_START: if ((be->dpcm[stream].state != SND_SOC_DPCM_STATE_PREPARE) && (be->dpcm[stream].state != SND_SOC_DPCM_STATE_STOP)) continue; ret = dpcm_do_trigger(dpcm, be_substream, cmd); if (ret) return ret; be->dpcm[stream].state = SND_SOC_DPCM_STATE_START; break; case SNDRV_PCM_TRIGGER_RESUME: if ((be->dpcm[stream].state != SND_SOC_DPCM_STATE_SUSPEND)) continue; ret = dpcm_do_trigger(dpcm, be_substream, cmd); if (ret) return ret; be->dpcm[stream].state = SND_SOC_DPCM_STATE_START; break; case SNDRV_PCM_TRIGGER_PAUSE_RELEASE: if ((be->dpcm[stream].state != SND_SOC_DPCM_STATE_PAUSED)) continue; ret = dpcm_do_trigger(dpcm, be_substream, cmd); if (ret) return ret; be->dpcm[stream].state = SND_SOC_DPCM_STATE_START; break; case SNDRV_PCM_TRIGGER_STOP: if (be->dpcm[stream].state != SND_SOC_DPCM_STATE_START) continue; if (!snd_soc_dpcm_can_be_free_stop(fe, be, stream)) continue; ret = dpcm_do_trigger(dpcm, be_substream, cmd); if (ret) return ret; be->dpcm[stream].state = SND_SOC_DPCM_STATE_STOP; break; case SNDRV_PCM_TRIGGER_SUSPEND: if (be->dpcm[stream].state != SND_SOC_DPCM_STATE_START) continue; if (!snd_soc_dpcm_can_be_free_stop(fe, be, stream)) continue; ret = dpcm_do_trigger(dpcm, be_substream, cmd); if (ret) return ret; be->dpcm[stream].state = SND_SOC_DPCM_STATE_SUSPEND; break; case SNDRV_PCM_TRIGGER_PAUSE_PUSH: if (be->dpcm[stream].state != SND_SOC_DPCM_STATE_START) continue; if (!snd_soc_dpcm_can_be_free_stop(fe, be, stream)) continue; ret = dpcm_do_trigger(dpcm, be_substream, cmd); if (ret) return ret; be->dpcm[stream].state = SND_SOC_DPCM_STATE_PAUSED; break; } } return ret; } EXPORT_SYMBOL_GPL(dpcm_be_dai_trigger); static int dpcm_fe_dai_do_trigger(struct snd_pcm_substream *substream, int cmd) { struct snd_soc_pcm_runtime *fe = substream->private_data; int stream = substream->stream, ret; enum snd_soc_dpcm_trigger trigger = fe->dai_link->trigger[stream]; fe->dpcm[stream].runtime_update = SND_SOC_DPCM_UPDATE_FE; switch (trigger) { case SND_SOC_DPCM_TRIGGER_PRE: /* call trigger on the frontend before the backend. */ dev_dbg(fe->dev, "ASoC: pre trigger FE %s cmd %d\n", fe->dai_link->name, cmd); ret = soc_pcm_trigger(substream, cmd); if (ret < 0) { dev_err(fe->dev,"ASoC: trigger FE failed %d\n", ret); goto out; } ret = dpcm_be_dai_trigger(fe, substream->stream, cmd); break; case SND_SOC_DPCM_TRIGGER_POST: /* call trigger on the frontend after the backend. */ ret = dpcm_be_dai_trigger(fe, substream->stream, cmd); if (ret < 0) { dev_err(fe->dev,"ASoC: trigger FE failed %d\n", ret); goto out; } dev_dbg(fe->dev, "ASoC: post trigger FE %s cmd %d\n", fe->dai_link->name, cmd); ret = soc_pcm_trigger(substream, cmd); break; case SND_SOC_DPCM_TRIGGER_BESPOKE: /* bespoke trigger() - handles both FE and BEs */ dev_dbg(fe->dev, "ASoC: bespoke trigger FE %s cmd %d\n", fe->dai_link->name, cmd); ret = soc_pcm_bespoke_trigger(substream, cmd); if (ret < 0) { dev_err(fe->dev,"ASoC: trigger FE failed %d\n", ret); goto out; } break; default: dev_err(fe->dev, "ASoC: invalid trigger cmd %d for %s\n", cmd, fe->dai_link->name); ret = -EINVAL; goto out; } switch (cmd) { case SNDRV_PCM_TRIGGER_START: case SNDRV_PCM_TRIGGER_RESUME: case SNDRV_PCM_TRIGGER_PAUSE_RELEASE: fe->dpcm[stream].state = SND_SOC_DPCM_STATE_START; break; case SNDRV_PCM_TRIGGER_STOP: case SNDRV_PCM_TRIGGER_SUSPEND: fe->dpcm[stream].state = SND_SOC_DPCM_STATE_STOP; break; case SNDRV_PCM_TRIGGER_PAUSE_PUSH: fe->dpcm[stream].state = SND_SOC_DPCM_STATE_PAUSED; break; } out: fe->dpcm[stream].runtime_update = SND_SOC_DPCM_UPDATE_NO; return ret; } static int dpcm_fe_dai_trigger(struct snd_pcm_substream *substream, int cmd) { struct snd_soc_pcm_runtime *fe = substream->private_data; int stream = substream->stream; /* if FE's runtime_update is already set, we're in race; * process this trigger later at exit */ if (fe->dpcm[stream].runtime_update != SND_SOC_DPCM_UPDATE_NO) { fe->dpcm[stream].trigger_pending = cmd + 1; return 0; /* delayed, assuming it's successful */ } /* we're alone, let's trigger */ return dpcm_fe_dai_do_trigger(substream, cmd); } int dpcm_be_dai_prepare(struct snd_soc_pcm_runtime *fe, int stream) { struct snd_soc_dpcm *dpcm; int ret = 0; for_each_dpcm_be(fe, stream, dpcm) { struct snd_soc_pcm_runtime *be = dpcm->be; struct snd_pcm_substream *be_substream = snd_soc_dpcm_get_substream(be, stream); /* is this op for this BE ? */ if (!snd_soc_dpcm_be_can_update(fe, be, stream)) continue; if ((be->dpcm[stream].state != SND_SOC_DPCM_STATE_HW_PARAMS) && (be->dpcm[stream].state != SND_SOC_DPCM_STATE_STOP) && (be->dpcm[stream].state != SND_SOC_DPCM_STATE_SUSPEND)) continue; dev_dbg(be->dev, "ASoC: prepare BE %s\n", be->dai_link->name); ret = soc_pcm_prepare(be_substream); if (ret < 0) { dev_err(be->dev, "ASoC: backend prepare failed %d\n", ret); break; } be->dpcm[stream].state = SND_SOC_DPCM_STATE_PREPARE; } return ret; } static int dpcm_fe_dai_prepare(struct snd_pcm_substream *substream) { struct snd_soc_pcm_runtime *fe = substream->private_data; int stream = substream->stream, ret = 0; mutex_lock_nested(&fe->card->mutex, SND_SOC_CARD_CLASS_RUNTIME); dev_dbg(fe->dev, "ASoC: prepare FE %s\n", fe->dai_link->name); dpcm_set_fe_update_state(fe, stream, SND_SOC_DPCM_UPDATE_FE); /* there is no point preparing this FE if there are no BEs */ if (list_empty(&fe->dpcm[stream].be_clients)) { dev_err(fe->dev, "ASoC: no backend DAIs enabled for %s\n", fe->dai_link->name); ret = -EINVAL; goto out; } ret = dpcm_be_dai_prepare(fe, substream->stream); if (ret < 0) goto out; /* call prepare on the frontend */ ret = soc_pcm_prepare(substream); if (ret < 0) { dev_err(fe->dev,"ASoC: prepare FE %s failed\n", fe->dai_link->name); goto out; } /* run the stream event for each BE */ dpcm_dapm_stream_event(fe, stream, SND_SOC_DAPM_STREAM_START); fe->dpcm[stream].state = SND_SOC_DPCM_STATE_PREPARE; out: dpcm_set_fe_update_state(fe, stream, SND_SOC_DPCM_UPDATE_NO); mutex_unlock(&fe->card->mutex); return ret; } static int soc_pcm_ioctl(struct snd_pcm_substream *substream, unsigned int cmd, void *arg) { struct snd_soc_pcm_runtime *rtd = substream->private_data; struct snd_soc_component *component; struct snd_soc_rtdcom_list *rtdcom; for_each_rtdcom(rtd, rtdcom) { component = rtdcom->component; if (!component->driver->ops || !component->driver->ops->ioctl) continue; /* FIXME: use 1st ioctl */ return component->driver->ops->ioctl(substream, cmd, arg); } return snd_pcm_lib_ioctl(substream, cmd, arg); } static int dpcm_run_update_shutdown(struct snd_soc_pcm_runtime *fe, int stream) { struct snd_pcm_substream *substream = snd_soc_dpcm_get_substream(fe, stream); enum snd_soc_dpcm_trigger trigger = fe->dai_link->trigger[stream]; int err; dev_dbg(fe->dev, "ASoC: runtime %s close on FE %s\n", stream ? "capture" : "playback", fe->dai_link->name); if (trigger == SND_SOC_DPCM_TRIGGER_BESPOKE) { /* call bespoke trigger - FE takes care of all BE triggers */ dev_dbg(fe->dev, "ASoC: bespoke trigger FE %s cmd stop\n", fe->dai_link->name); err = soc_pcm_bespoke_trigger(substream, SNDRV_PCM_TRIGGER_STOP); if (err < 0) dev_err(fe->dev,"ASoC: trigger FE failed %d\n", err); } else { dev_dbg(fe->dev, "ASoC: trigger FE %s cmd stop\n", fe->dai_link->name); err = dpcm_be_dai_trigger(fe, stream, SNDRV_PCM_TRIGGER_STOP); if (err < 0) dev_err(fe->dev,"ASoC: trigger FE failed %d\n", err); } err = dpcm_be_dai_hw_free(fe, stream); if (err < 0) dev_err(fe->dev,"ASoC: hw_free FE failed %d\n", err); err = dpcm_be_dai_shutdown(fe, stream); if (err < 0) dev_err(fe->dev,"ASoC: shutdown FE failed %d\n", err); /* run the stream event for each BE */ dpcm_dapm_stream_event(fe, stream, SND_SOC_DAPM_STREAM_NOP); return 0; } static int dpcm_run_update_startup(struct snd_soc_pcm_runtime *fe, int stream) { struct snd_pcm_substream *substream = snd_soc_dpcm_get_substream(fe, stream); struct snd_soc_dpcm *dpcm; enum snd_soc_dpcm_trigger trigger = fe->dai_link->trigger[stream]; int ret; dev_dbg(fe->dev, "ASoC: runtime %s open on FE %s\n", stream ? "capture" : "playback", fe->dai_link->name); /* Only start the BE if the FE is ready */ if (fe->dpcm[stream].state == SND_SOC_DPCM_STATE_HW_FREE || fe->dpcm[stream].state == SND_SOC_DPCM_STATE_CLOSE) return -EINVAL; /* startup must always be called for new BEs */ ret = dpcm_be_dai_startup(fe, stream); if (ret < 0) goto disconnect; /* keep going if FE state is > open */ if (fe->dpcm[stream].state == SND_SOC_DPCM_STATE_OPEN) return 0; ret = dpcm_be_dai_hw_params(fe, stream); if (ret < 0) goto close; /* keep going if FE state is > hw_params */ if (fe->dpcm[stream].state == SND_SOC_DPCM_STATE_HW_PARAMS) return 0; ret = dpcm_be_dai_prepare(fe, stream); if (ret < 0) goto hw_free; /* run the stream event for each BE */ dpcm_dapm_stream_event(fe, stream, SND_SOC_DAPM_STREAM_NOP); /* keep going if FE state is > prepare */ if (fe->dpcm[stream].state == SND_SOC_DPCM_STATE_PREPARE || fe->dpcm[stream].state == SND_SOC_DPCM_STATE_STOP) return 0; if (trigger == SND_SOC_DPCM_TRIGGER_BESPOKE) { /* call trigger on the frontend - FE takes care of all BE triggers */ dev_dbg(fe->dev, "ASoC: bespoke trigger FE %s cmd start\n", fe->dai_link->name); ret = soc_pcm_bespoke_trigger(substream, SNDRV_PCM_TRIGGER_START); if (ret < 0) { dev_err(fe->dev,"ASoC: bespoke trigger FE failed %d\n", ret); goto hw_free; } } else { dev_dbg(fe->dev, "ASoC: trigger FE %s cmd start\n", fe->dai_link->name); ret = dpcm_be_dai_trigger(fe, stream, SNDRV_PCM_TRIGGER_START); if (ret < 0) { dev_err(fe->dev,"ASoC: trigger FE failed %d\n", ret); goto hw_free; } } return 0; hw_free: dpcm_be_dai_hw_free(fe, stream); close: dpcm_be_dai_shutdown(fe, stream); disconnect: /* disconnect any non started BEs */ for_each_dpcm_be(fe, stream, dpcm) { struct snd_soc_pcm_runtime *be = dpcm->be; if (be->dpcm[stream].state != SND_SOC_DPCM_STATE_START) dpcm->state = SND_SOC_DPCM_LINK_STATE_FREE; } return ret; } static int dpcm_run_new_update(struct snd_soc_pcm_runtime *fe, int stream) { int ret; dpcm_set_fe_update_state(fe, stream, SND_SOC_DPCM_UPDATE_BE); ret = dpcm_run_update_startup(fe, stream); if (ret < 0) dev_err(fe->dev, "ASoC: failed to startup some BEs\n"); dpcm_set_fe_update_state(fe, stream, SND_SOC_DPCM_UPDATE_NO); return ret; } static int dpcm_run_old_update(struct snd_soc_pcm_runtime *fe, int stream) { int ret; dpcm_set_fe_update_state(fe, stream, SND_SOC_DPCM_UPDATE_BE); ret = dpcm_run_update_shutdown(fe, stream); if (ret < 0) dev_err(fe->dev, "ASoC: failed to shutdown some BEs\n"); dpcm_set_fe_update_state(fe, stream, SND_SOC_DPCM_UPDATE_NO); return ret; } 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->dai_link->dynamic) return 0; /* only check active links */ if (!fe->cpu_dai->active) return 0; /* DAPM sync will call this to update DSP paths */ dev_dbg(fe->dev, "ASoC: DPCM %s runtime update for FE %s\n", new ? "new" : "old", fe->dai_link->name); /* skip if FE doesn't have playback capability */ if (!fe->cpu_dai->driver->playback.channels_min || !fe->codec_dai->driver->playback.channels_min) goto capture; /* skip if FE isn't currently playing */ if (!fe->cpu_dai->playback_active || !fe->codec_dai->playback_active) goto capture; paths = dpcm_path_get(fe, SNDRV_PCM_STREAM_PLAYBACK, &list); if (paths < 0) { dev_warn(fe->dev, "ASoC: %s no valid %s path\n", fe->dai_link->name, "playback"); return paths; } /* update any playback paths */ count = dpcm_process_paths(fe, SNDRV_PCM_STREAM_PLAYBACK, &list, new); if (count) { if (new) dpcm_run_new_update(fe, SNDRV_PCM_STREAM_PLAYBACK); else dpcm_run_old_update(fe, SNDRV_PCM_STREAM_PLAYBACK); dpcm_clear_pending_state(fe, SNDRV_PCM_STREAM_PLAYBACK); dpcm_be_disconnect(fe, SNDRV_PCM_STREAM_PLAYBACK); } dpcm_path_put(&list); capture: /* skip if FE doesn't have capture capability */ if (!fe->cpu_dai->driver->capture.channels_min || !fe->codec_dai->driver->capture.channels_min) return 0; /* skip if FE isn't currently capturing */ if (!fe->cpu_dai->capture_active || !fe->codec_dai->capture_active) return 0; paths = dpcm_path_get(fe, SNDRV_PCM_STREAM_CAPTURE, &list); if (paths < 0) { dev_warn(fe->dev, "ASoC: %s no valid %s path\n", fe->dai_link->name, "capture"); return paths; } /* update any old capture paths */ count = dpcm_process_paths(fe, SNDRV_PCM_STREAM_CAPTURE, &list, new); if (count) { if (new) dpcm_run_new_update(fe, SNDRV_PCM_STREAM_CAPTURE); else dpcm_run_old_update(fe, SNDRV_PCM_STREAM_CAPTURE); dpcm_clear_pending_state(fe, SNDRV_PCM_STREAM_CAPTURE); dpcm_be_disconnect(fe, SNDRV_PCM_STREAM_CAPTURE); } dpcm_path_put(&list); return 0; } /* Called by DAPM mixer/mux changes to update audio routing between PCMs and * any DAI links. */ int soc_dpcm_runtime_update(struct snd_soc_card *card) { struct snd_soc_pcm_runtime *fe; int ret = 0; mutex_lock_nested(&card->mutex, SND_SOC_CARD_CLASS_RUNTIME); /* shutdown all old paths first */ for_each_card_rtds(card, fe) { ret = soc_dpcm_fe_runtime_update(fe, 0); if (ret) goto out; } /* bring new paths up */ for_each_card_rtds(card, fe) { ret = soc_dpcm_fe_runtime_update(fe, 1); if (ret) goto out; } out: mutex_unlock(&card->mutex); return ret; } int soc_dpcm_be_digital_mute(struct snd_soc_pcm_runtime *fe, int mute) { struct snd_soc_dpcm *dpcm; struct snd_soc_dai *dai; for_each_dpcm_be(fe, SNDRV_PCM_STREAM_PLAYBACK, dpcm) { struct snd_soc_pcm_runtime *be = dpcm->be; int i; if (be->dai_link->ignore_suspend) continue; for_each_rtd_codec_dai(be, i, dai) { struct snd_soc_dai_driver *drv = dai->driver; dev_dbg(be->dev, "ASoC: BE digital mute %s\n", be->dai_link->name); if (drv->ops && drv->ops->digital_mute && dai->playback_active) drv->ops->digital_mute(dai, mute); } } return 0; } static int dpcm_fe_dai_open(struct snd_pcm_substream *fe_substream) { struct snd_soc_pcm_runtime *fe = fe_substream->private_data; struct snd_soc_dpcm *dpcm; struct snd_soc_dapm_widget_list *list; int ret; int stream = fe_substream->stream; mutex_lock_nested(&fe->card->mutex, SND_SOC_CARD_CLASS_RUNTIME); fe->dpcm[stream].runtime = fe_substream->runtime; ret = dpcm_path_get(fe, stream, &list); if (ret < 0) { mutex_unlock(&fe->card->mutex); return ret; } else if (ret == 0) { dev_dbg(fe->dev, "ASoC: %s no valid %s route\n", fe->dai_link->name, stream ? "capture" : "playback"); } /* calculate valid and active FE <-> BE dpcms */ dpcm_process_paths(fe, stream, &list, 1); ret = dpcm_fe_dai_startup(fe_substream); if (ret < 0) { /* clean up all links */ for_each_dpcm_be(fe, stream, dpcm) dpcm->state = SND_SOC_DPCM_LINK_STATE_FREE; dpcm_be_disconnect(fe, stream); fe->dpcm[stream].runtime = NULL; } dpcm_clear_pending_state(fe, stream); dpcm_path_put(&list); mutex_unlock(&fe->card->mutex); return ret; } static int dpcm_fe_dai_close(struct snd_pcm_substream *fe_substream) { struct snd_soc_pcm_runtime *fe = fe_substream->private_data; struct snd_soc_dpcm *dpcm; int stream = fe_substream->stream, ret; mutex_lock_nested(&fe->card->mutex, SND_SOC_CARD_CLASS_RUNTIME); ret = dpcm_fe_dai_shutdown(fe_substream); /* mark FE's links ready to prune */ for_each_dpcm_be(fe, stream, dpcm) dpcm->state = SND_SOC_DPCM_LINK_STATE_FREE; dpcm_be_disconnect(fe, stream); fe->dpcm[stream].runtime = NULL; mutex_unlock(&fe->card->mutex); return ret; } static void soc_pcm_private_free(struct snd_pcm *pcm) { struct snd_soc_pcm_runtime *rtd = pcm->private_data; struct snd_soc_rtdcom_list *rtdcom; struct snd_soc_component *component; /* need to sync the delayed work before releasing resources */ flush_delayed_work(&rtd->delayed_work); for_each_rtdcom(rtd, rtdcom) { component = rtdcom->component; if (component->driver->pcm_free) component->driver->pcm_free(pcm); } } static int soc_rtdcom_ack(struct snd_pcm_substream *substream) { struct snd_soc_pcm_runtime *rtd = substream->private_data; struct snd_soc_rtdcom_list *rtdcom; struct snd_soc_component *component; for_each_rtdcom(rtd, rtdcom) { component = rtdcom->component; if (!component->driver->ops || !component->driver->ops->ack) continue; /* FIXME. it returns 1st ask now */ return component->driver->ops->ack(substream); } return -EINVAL; } static int soc_rtdcom_copy_user(struct snd_pcm_substream *substream, int channel, unsigned long pos, void __user *buf, unsigned long bytes) { struct snd_soc_pcm_runtime *rtd = substream->private_data; struct snd_soc_rtdcom_list *rtdcom; struct snd_soc_component *component; for_each_rtdcom(rtd, rtdcom) { component = rtdcom->component; if (!component->driver->ops || !component->driver->ops->copy_user) continue; /* FIXME. it returns 1st copy now */ return component->driver->ops->copy_user(substream, channel, pos, buf, bytes); } return -EINVAL; } static int soc_rtdcom_copy_kernel(struct snd_pcm_substream *substream, int channel, unsigned long pos, void *buf, unsigned long bytes) { struct snd_soc_pcm_runtime *rtd = substream->private_data; struct snd_soc_rtdcom_list *rtdcom; struct snd_soc_component *component; for_each_rtdcom(rtd, rtdcom) { component = rtdcom->component; if (!component->driver->ops || !component->driver->ops->copy_kernel) continue; /* FIXME. it returns 1st copy now */ return component->driver->ops->copy_kernel(substream, channel, pos, buf, bytes); } return -EINVAL; } static int soc_rtdcom_fill_silence(struct snd_pcm_substream *substream, int channel, unsigned long pos, unsigned long bytes) { struct snd_soc_pcm_runtime *rtd = substream->private_data; struct snd_soc_rtdcom_list *rtdcom; struct snd_soc_component *component; for_each_rtdcom(rtd, rtdcom) { component = rtdcom->component; if (!component->driver->ops || !component->driver->ops->fill_silence) continue; /* FIXME. it returns 1st silence now */ return component->driver->ops->fill_silence(substream, channel, pos, bytes); } return -EINVAL; } static struct page *soc_rtdcom_page(struct snd_pcm_substream *substream, unsigned long offset) { struct snd_soc_pcm_runtime *rtd = substream->private_data; struct snd_soc_rtdcom_list *rtdcom; struct snd_soc_component *component; struct page *page; for_each_rtdcom(rtd, rtdcom) { component = rtdcom->component; if (!component->driver->ops || !component->driver->ops->page) continue; /* FIXME. it returns 1st page now */ page = component->driver->ops->page(substream, offset); if (page) return page; } return NULL; } static int soc_rtdcom_mmap(struct snd_pcm_substream *substream, struct vm_area_struct *vma) { struct snd_soc_pcm_runtime *rtd = substream->private_data; struct snd_soc_rtdcom_list *rtdcom; struct snd_soc_component *component; for_each_rtdcom(rtd, rtdcom) { component = rtdcom->component; if (!component->driver->ops || !component->driver->ops->mmap) continue; /* FIXME. it returns 1st mmap now */ return component->driver->ops->mmap(substream, vma); } return -EINVAL; } /* create a new pcm */ 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_component *component; struct snd_soc_rtdcom_list *rtdcom; struct snd_pcm *pcm; char new_name[64]; int ret = 0, playback = 0, capture = 0; int i; if (rtd->dai_link->dynamic || rtd->dai_link->no_pcm) { playback = rtd->dai_link->dpcm_playback; capture = rtd->dai_link->dpcm_capture; } else { for_each_rtd_codec_dai(rtd, i, codec_dai) { if (codec_dai->driver->playback.channels_min) playback = 1; if (codec_dai->driver->capture.channels_min) capture = 1; } capture = capture && cpu_dai->driver->capture.channels_min; playback = playback && cpu_dai->driver->playback.channels_min; } if (rtd->dai_link->playback_only) { playback = 1; capture = 0; } if (rtd->dai_link->capture_only) { playback = 0; capture = 1; } /* create the PCM */ if (rtd->dai_link->no_pcm) { snprintf(new_name, sizeof(new_name), "(%s)", rtd->dai_link->stream_name); ret = snd_pcm_new_internal(rtd->card->snd_card, new_name, num, playback, capture, &pcm); } else { if (rtd->dai_link->dynamic) snprintf(new_name, sizeof(new_name), "%s (*)", rtd->dai_link->stream_name); else snprintf(new_name, sizeof(new_name), "%s %s-%d", rtd->dai_link->stream_name, (rtd->num_codecs > 1) ? "multicodec" : rtd->codec_dai->name, num); ret = snd_pcm_new(rtd->card->snd_card, new_name, num, playback, capture, &pcm); } if (ret < 0) { dev_err(rtd->card->dev, "ASoC: can't create pcm for %s\n", rtd->dai_link->name); return ret; } dev_dbg(rtd->card->dev, "ASoC: registered pcm #%d %s\n",num, new_name); /* DAPM dai link stream work */ INIT_DELAYED_WORK(&rtd->delayed_work, close_delayed_work); pcm->nonatomic = rtd->dai_link->nonatomic; rtd->pcm = pcm; pcm->private_data = rtd; if (rtd->dai_link->no_pcm) { if (playback) pcm->streams[SNDRV_PCM_STREAM_PLAYBACK].substream->private_data = rtd; if (capture) pcm->streams[SNDRV_PCM_STREAM_CAPTURE].substream->private_data = rtd; goto out; } /* ASoC PCM operations */ if (rtd->dai_link->dynamic) { rtd->ops.open = dpcm_fe_dai_open; rtd->ops.hw_params = dpcm_fe_dai_hw_params; rtd->ops.prepare = dpcm_fe_dai_prepare; rtd->ops.trigger = dpcm_fe_dai_trigger; rtd->ops.hw_free = dpcm_fe_dai_hw_free; rtd->ops.close = dpcm_fe_dai_close; rtd->ops.pointer = soc_pcm_pointer; rtd->ops.ioctl = soc_pcm_ioctl; } else { rtd->ops.open = soc_pcm_open; rtd->ops.hw_params = soc_pcm_hw_params; rtd->ops.prepare = soc_pcm_prepare; rtd->ops.trigger = soc_pcm_trigger; rtd->ops.hw_free = soc_pcm_hw_free; rtd->ops.close = soc_pcm_close; rtd->ops.pointer = soc_pcm_pointer; rtd->ops.ioctl = soc_pcm_ioctl; } for_each_rtdcom(rtd, rtdcom) { const struct snd_pcm_ops *ops = rtdcom->component->driver->ops; if (!ops) continue; if (ops->ack) rtd->ops.ack = soc_rtdcom_ack; if (ops->copy_user) rtd->ops.copy_user = soc_rtdcom_copy_user; if (ops->copy_kernel) rtd->ops.copy_kernel = soc_rtdcom_copy_kernel; if (ops->fill_silence) rtd->ops.fill_silence = soc_rtdcom_fill_silence; if (ops->page) rtd->ops.page = soc_rtdcom_page; if (ops->mmap) rtd->ops.mmap = soc_rtdcom_mmap; } if (playback) snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_PLAYBACK, &rtd->ops); if (capture) snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_CAPTURE, &rtd->ops); for_each_rtdcom(rtd, rtdcom) { component = rtdcom->component; if (!component->driver->pcm_new) continue; ret = component->driver->pcm_new(rtd); if (ret < 0) { dev_err(component->dev, "ASoC: pcm constructor failed: %d\n", ret); return ret; } } pcm->private_free = soc_pcm_private_free; out: dev_info(rtd->card->dev, "%s <-> %s mapping ok\n", (rtd->num_codecs > 1) ? "multicodec" : rtd->codec_dai->name, cpu_dai->name); return ret; } /* is the current PCM operation for this FE ? */ int snd_soc_dpcm_fe_can_update(struct snd_soc_pcm_runtime *fe, int stream) { if (fe->dpcm[stream].runtime_update == SND_SOC_DPCM_UPDATE_FE) return 1; return 0; } EXPORT_SYMBOL_GPL(snd_soc_dpcm_fe_can_update); /* is the current PCM operation for this BE ? */ int snd_soc_dpcm_be_can_update(struct snd_soc_pcm_runtime *fe, struct snd_soc_pcm_runtime *be, int stream) { if ((fe->dpcm[stream].runtime_update == SND_SOC_DPCM_UPDATE_FE) || ((fe->dpcm[stream].runtime_update == SND_SOC_DPCM_UPDATE_BE) && be->dpcm[stream].runtime_update)) return 1; return 0; } EXPORT_SYMBOL_GPL(snd_soc_dpcm_be_can_update); /* get the substream for this BE */ struct snd_pcm_substream * snd_soc_dpcm_get_substream(struct snd_soc_pcm_runtime *be, int stream) { return be->pcm->streams[stream].substream; } EXPORT_SYMBOL_GPL(snd_soc_dpcm_get_substream); /* get the BE runtime state */ enum snd_soc_dpcm_state snd_soc_dpcm_be_get_state(struct snd_soc_pcm_runtime *be, int stream) { return be->dpcm[stream].state; } EXPORT_SYMBOL_GPL(snd_soc_dpcm_be_get_state); /* set the BE runtime state */ void snd_soc_dpcm_be_set_state(struct snd_soc_pcm_runtime *be, int stream, enum snd_soc_dpcm_state state) { be->dpcm[stream].state = state; } EXPORT_SYMBOL_GPL(snd_soc_dpcm_be_set_state); /* * We can only hw_free, stop, pause or suspend a BE DAI if any of it's FE * are not running, paused or suspended for the specified stream direction. */ int snd_soc_dpcm_can_be_free_stop(struct snd_soc_pcm_runtime *fe, struct snd_soc_pcm_runtime *be, int stream) { struct snd_soc_dpcm *dpcm; int state; for_each_dpcm_fe(be, stream, dpcm) { if (dpcm->fe == fe) continue; state = dpcm->fe->dpcm[stream].state; if (state == SND_SOC_DPCM_STATE_START || state == SND_SOC_DPCM_STATE_PAUSED || state == SND_SOC_DPCM_STATE_SUSPEND) return 0; } /* it's safe to free/stop this BE DAI */ return 1; } EXPORT_SYMBOL_GPL(snd_soc_dpcm_can_be_free_stop); /* * We can only change hw params a BE DAI if any of it's FE are not prepared, * running, paused or suspended for the specified stream direction. */ int snd_soc_dpcm_can_be_params(struct snd_soc_pcm_runtime *fe, struct snd_soc_pcm_runtime *be, int stream) { struct snd_soc_dpcm *dpcm; int state; for_each_dpcm_fe(be, stream, dpcm) { if (dpcm->fe == fe) continue; state = dpcm->fe->dpcm[stream].state; if (state == SND_SOC_DPCM_STATE_START || state == SND_SOC_DPCM_STATE_PAUSED || state == SND_SOC_DPCM_STATE_SUSPEND || state == SND_SOC_DPCM_STATE_PREPARE) return 0; } /* it's safe to change hw_params */ return 1; } EXPORT_SYMBOL_GPL(snd_soc_dpcm_can_be_params); #ifdef CONFIG_DEBUG_FS static const char *dpcm_state_string(enum snd_soc_dpcm_state state) { switch (state) { case SND_SOC_DPCM_STATE_NEW: return "new"; case SND_SOC_DPCM_STATE_OPEN: return "open"; case SND_SOC_DPCM_STATE_HW_PARAMS: return "hw_params"; case SND_SOC_DPCM_STATE_PREPARE: return "prepare"; case SND_SOC_DPCM_STATE_START: return "start"; case SND_SOC_DPCM_STATE_STOP: return "stop"; case SND_SOC_DPCM_STATE_SUSPEND: return "suspend"; case SND_SOC_DPCM_STATE_PAUSED: return "paused"; case SND_SOC_DPCM_STATE_HW_FREE: return "hw_free"; case SND_SOC_DPCM_STATE_CLOSE: return "close"; } return "unknown"; } static ssize_t dpcm_show_state(struct snd_soc_pcm_runtime *fe, int stream, char *buf, size_t size) { struct snd_pcm_hw_params *params = &fe->dpcm[stream].hw_params; struct snd_soc_dpcm *dpcm; ssize_t offset = 0; /* FE state */ offset += snprintf(buf + offset, size - offset, "[%s - %s]\n", fe->dai_link->name, stream ? "Capture" : "Playback"); offset += snprintf(buf + offset, size - offset, "State: %s\n", dpcm_state_string(fe->dpcm[stream].state)); if ((fe->dpcm[stream].state >= SND_SOC_DPCM_STATE_HW_PARAMS) && (fe->dpcm[stream].state <= SND_SOC_DPCM_STATE_STOP)) offset += snprintf(buf + offset, size - offset, "Hardware Params: " "Format = %s, Channels = %d, Rate = %d\n", snd_pcm_format_name(params_format(params)), params_channels(params), params_rate(params)); /* BEs state */ offset += snprintf(buf + offset, size - offset, "Backends:\n"); if (list_empty(&fe->dpcm[stream].be_clients)) { offset += snprintf(buf + offset, size - offset, " No active DSP links\n"); goto out; } for_each_dpcm_be(fe, stream, dpcm) { struct snd_soc_pcm_runtime *be = dpcm->be; params = &dpcm->hw_params; offset += snprintf(buf + offset, size - offset, "- %s\n", be->dai_link->name); offset += snprintf(buf + offset, size - offset, " State: %s\n", dpcm_state_string(be->dpcm[stream].state)); if ((be->dpcm[stream].state >= SND_SOC_DPCM_STATE_HW_PARAMS) && (be->dpcm[stream].state <= SND_SOC_DPCM_STATE_STOP)) offset += snprintf(buf + offset, size - offset, " Hardware Params: " "Format = %s, Channels = %d, Rate = %d\n", snd_pcm_format_name(params_format(params)), params_channels(params), params_rate(params)); } out: return offset; } static ssize_t dpcm_state_read_file(struct file *file, char __user *user_buf, size_t count, loff_t *ppos) { struct snd_soc_pcm_runtime *fe = file->private_data; ssize_t out_count = PAGE_SIZE, offset = 0, ret = 0; char *buf; buf = kmalloc(out_count, GFP_KERNEL); if (!buf) return -ENOMEM; if (fe->cpu_dai->driver->playback.channels_min) offset += dpcm_show_state(fe, SNDRV_PCM_STREAM_PLAYBACK, buf + offset, out_count - offset); if (fe->cpu_dai->driver->capture.channels_min) offset += dpcm_show_state(fe, SNDRV_PCM_STREAM_CAPTURE, buf + offset, out_count - offset); ret = simple_read_from_buffer(user_buf, count, ppos, buf, offset); kfree(buf); return ret; } static const struct file_operations dpcm_state_fops = { .open = simple_open, .read = dpcm_state_read_file, .llseek = default_llseek, }; void soc_dpcm_debugfs_add(struct snd_soc_pcm_runtime *rtd) { if (!rtd->dai_link) return; if (!rtd->card->debugfs_card_root) return; rtd->debugfs_dpcm_root = debugfs_create_dir(rtd->dai_link->name, rtd->card->debugfs_card_root); if (!rtd->debugfs_dpcm_root) { dev_dbg(rtd->dev, "ASoC: Failed to create dpcm debugfs directory %s\n", rtd->dai_link->name); return; } debugfs_create_file("state", 0444, rtd->debugfs_dpcm_root, rtd, &dpcm_state_fops); } #endif
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