![Piotr Stankiewicz](/assets/img/avatar_default.png)
Certain situations may warrant examining DAPM paths only to a certain arbitrary point, as opposed to always following them to the end. For instance, when establishing a connection between a front-end DAI link and a back-end DAI link in a DPCM path, it does not make sense to walk the DAPM graph beyond the first widget associated with a back-end link. This patch introduces a mechanism which lets a user of dai_get_connected_widgets supply a function which will be called for every node during the graph walk. When invoked, this function can execute arbitrary logic to decide whether the walk, given a DAPM widget and walk direction, should be terminated at that point or continued as normal. Signed-off-by: Piotr Stankiewicz <piotrs@opensource.wolfsonmicro.com> Signed-off-by: Mark Brown <broonie@kernel.org>
2981 lines
82 KiB
C
2981 lines
82 KiB
C
/*
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* soc-pcm.c -- ALSA SoC PCM
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*
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* Copyright 2005 Wolfson Microelectronics PLC.
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* Copyright 2005 Openedhand Ltd.
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* Copyright (C) 2010 Slimlogic Ltd.
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* Copyright (C) 2010 Texas Instruments Inc.
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*
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* Authors: Liam Girdwood <lrg@ti.com>
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* Mark Brown <broonie@opensource.wolfsonmicro.com>
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*
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* This program is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License as published by the
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* Free Software Foundation; either version 2 of the License, or (at your
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* option) any later version.
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*
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*/
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#include <linux/kernel.h>
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#include <linux/init.h>
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#include <linux/delay.h>
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#include <linux/pinctrl/consumer.h>
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#include <linux/pm_runtime.h>
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#include <linux/slab.h>
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#include <linux/workqueue.h>
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#include <linux/export.h>
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#include <linux/debugfs.h>
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#include <sound/core.h>
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#include <sound/pcm.h>
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#include <sound/pcm_params.h>
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#include <sound/soc.h>
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#include <sound/soc-dpcm.h>
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#include <sound/initval.h>
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#define DPCM_MAX_BE_USERS 8
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/*
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* snd_soc_dai_stream_valid() - check if a DAI supports the given stream
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*
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* Returns true if the DAI supports the indicated stream type.
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*/
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static bool snd_soc_dai_stream_valid(struct snd_soc_dai *dai, int stream)
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{
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struct snd_soc_pcm_stream *codec_stream;
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if (stream == SNDRV_PCM_STREAM_PLAYBACK)
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codec_stream = &dai->driver->playback;
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else
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codec_stream = &dai->driver->capture;
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/* If the codec specifies any rate at all, it supports the stream. */
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return codec_stream->rates;
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}
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/**
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* snd_soc_runtime_activate() - Increment active count for PCM runtime components
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* @rtd: ASoC PCM runtime that is activated
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* @stream: Direction of the PCM stream
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*
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* Increments the active count for all the DAIs and components attached to a PCM
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* runtime. Should typically be called when a stream is opened.
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*
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* Must be called with the rtd->pcm_mutex being held
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*/
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void snd_soc_runtime_activate(struct snd_soc_pcm_runtime *rtd, int stream)
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{
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struct snd_soc_dai *cpu_dai = rtd->cpu_dai;
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int i;
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lockdep_assert_held(&rtd->pcm_mutex);
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if (stream == SNDRV_PCM_STREAM_PLAYBACK) {
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cpu_dai->playback_active++;
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for (i = 0; i < rtd->num_codecs; i++)
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rtd->codec_dais[i]->playback_active++;
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} else {
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cpu_dai->capture_active++;
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for (i = 0; i < rtd->num_codecs; i++)
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rtd->codec_dais[i]->capture_active++;
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}
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cpu_dai->active++;
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cpu_dai->component->active++;
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for (i = 0; i < rtd->num_codecs; i++) {
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rtd->codec_dais[i]->active++;
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rtd->codec_dais[i]->component->active++;
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}
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}
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/**
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* snd_soc_runtime_deactivate() - Decrement active count for PCM runtime components
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* @rtd: ASoC PCM runtime that is deactivated
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* @stream: Direction of the PCM stream
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*
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* Decrements the active count for all the DAIs and components attached to a PCM
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* runtime. Should typically be called when a stream is closed.
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*
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* Must be called with the rtd->pcm_mutex being held
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*/
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void snd_soc_runtime_deactivate(struct snd_soc_pcm_runtime *rtd, int stream)
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{
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struct snd_soc_dai *cpu_dai = rtd->cpu_dai;
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int i;
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lockdep_assert_held(&rtd->pcm_mutex);
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if (stream == SNDRV_PCM_STREAM_PLAYBACK) {
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cpu_dai->playback_active--;
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for (i = 0; i < rtd->num_codecs; i++)
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rtd->codec_dais[i]->playback_active--;
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} else {
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cpu_dai->capture_active--;
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for (i = 0; i < rtd->num_codecs; i++)
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rtd->codec_dais[i]->capture_active--;
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}
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cpu_dai->active--;
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cpu_dai->component->active--;
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for (i = 0; i < rtd->num_codecs; i++) {
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rtd->codec_dais[i]->component->active--;
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rtd->codec_dais[i]->active--;
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}
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}
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/**
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* snd_soc_runtime_ignore_pmdown_time() - Check whether to ignore the power down delay
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* @rtd: The ASoC PCM runtime that should be checked.
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*
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* This function checks whether the power down delay should be ignored for a
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* specific PCM runtime. Returns true if the delay is 0, if it the DAI link has
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* been configured to ignore the delay, or if none of the components benefits
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* from having the delay.
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*/
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bool snd_soc_runtime_ignore_pmdown_time(struct snd_soc_pcm_runtime *rtd)
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{
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int i;
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bool ignore = true;
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if (!rtd->pmdown_time || rtd->dai_link->ignore_pmdown_time)
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return true;
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for (i = 0; i < rtd->num_codecs; i++)
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ignore &= rtd->codec_dais[i]->component->ignore_pmdown_time;
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return rtd->cpu_dai->component->ignore_pmdown_time && ignore;
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}
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/**
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* snd_soc_set_runtime_hwparams - set the runtime hardware parameters
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* @substream: the pcm substream
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* @hw: the hardware parameters
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*
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* Sets the substream runtime hardware parameters.
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*/
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int snd_soc_set_runtime_hwparams(struct snd_pcm_substream *substream,
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const struct snd_pcm_hardware *hw)
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{
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struct snd_pcm_runtime *runtime = substream->runtime;
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runtime->hw.info = hw->info;
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runtime->hw.formats = hw->formats;
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runtime->hw.period_bytes_min = hw->period_bytes_min;
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runtime->hw.period_bytes_max = hw->period_bytes_max;
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runtime->hw.periods_min = hw->periods_min;
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runtime->hw.periods_max = hw->periods_max;
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runtime->hw.buffer_bytes_max = hw->buffer_bytes_max;
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runtime->hw.fifo_size = hw->fifo_size;
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return 0;
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}
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EXPORT_SYMBOL_GPL(snd_soc_set_runtime_hwparams);
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/* DPCM stream event, send event to FE and all active BEs. */
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int dpcm_dapm_stream_event(struct snd_soc_pcm_runtime *fe, int dir,
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int event)
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{
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struct snd_soc_dpcm *dpcm;
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list_for_each_entry(dpcm, &fe->dpcm[dir].be_clients, list_be) {
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struct snd_soc_pcm_runtime *be = dpcm->be;
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dev_dbg(be->dev, "ASoC: BE %s event %d dir %d\n",
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be->dai_link->name, event, dir);
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snd_soc_dapm_stream_event(be, dir, event);
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}
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snd_soc_dapm_stream_event(fe, dir, event);
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return 0;
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}
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static int soc_pcm_apply_symmetry(struct snd_pcm_substream *substream,
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struct snd_soc_dai *soc_dai)
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{
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struct snd_soc_pcm_runtime *rtd = substream->private_data;
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int ret;
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if (soc_dai->rate && (soc_dai->driver->symmetric_rates ||
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rtd->dai_link->symmetric_rates)) {
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dev_dbg(soc_dai->dev, "ASoC: Symmetry forces %dHz rate\n",
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soc_dai->rate);
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ret = snd_pcm_hw_constraint_single(substream->runtime,
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SNDRV_PCM_HW_PARAM_RATE,
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soc_dai->rate);
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if (ret < 0) {
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dev_err(soc_dai->dev,
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"ASoC: Unable to apply rate constraint: %d\n",
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ret);
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return ret;
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}
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}
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if (soc_dai->channels && (soc_dai->driver->symmetric_channels ||
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rtd->dai_link->symmetric_channels)) {
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dev_dbg(soc_dai->dev, "ASoC: Symmetry forces %d channel(s)\n",
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soc_dai->channels);
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ret = snd_pcm_hw_constraint_single(substream->runtime,
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SNDRV_PCM_HW_PARAM_CHANNELS,
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soc_dai->channels);
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if (ret < 0) {
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dev_err(soc_dai->dev,
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"ASoC: Unable to apply channel symmetry constraint: %d\n",
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ret);
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return ret;
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}
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}
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if (soc_dai->sample_bits && (soc_dai->driver->symmetric_samplebits ||
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rtd->dai_link->symmetric_samplebits)) {
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dev_dbg(soc_dai->dev, "ASoC: Symmetry forces %d sample bits\n",
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soc_dai->sample_bits);
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ret = snd_pcm_hw_constraint_single(substream->runtime,
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SNDRV_PCM_HW_PARAM_SAMPLE_BITS,
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soc_dai->sample_bits);
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if (ret < 0) {
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dev_err(soc_dai->dev,
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"ASoC: Unable to apply sample bits symmetry constraint: %d\n",
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ret);
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return ret;
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}
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}
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return 0;
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}
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static int soc_pcm_params_symmetry(struct snd_pcm_substream *substream,
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struct snd_pcm_hw_params *params)
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{
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struct snd_soc_pcm_runtime *rtd = substream->private_data;
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struct snd_soc_dai *cpu_dai = rtd->cpu_dai;
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unsigned int rate, channels, sample_bits, symmetry, i;
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rate = params_rate(params);
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channels = params_channels(params);
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sample_bits = snd_pcm_format_physical_width(params_format(params));
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/* reject unmatched parameters when applying symmetry */
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symmetry = cpu_dai->driver->symmetric_rates ||
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rtd->dai_link->symmetric_rates;
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for (i = 0; i < rtd->num_codecs; i++)
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symmetry |= rtd->codec_dais[i]->driver->symmetric_rates;
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if (symmetry && cpu_dai->rate && cpu_dai->rate != rate) {
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dev_err(rtd->dev, "ASoC: unmatched rate symmetry: %d - %d\n",
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cpu_dai->rate, rate);
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return -EINVAL;
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}
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symmetry = cpu_dai->driver->symmetric_channels ||
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rtd->dai_link->symmetric_channels;
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for (i = 0; i < rtd->num_codecs; i++)
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symmetry |= rtd->codec_dais[i]->driver->symmetric_channels;
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if (symmetry && cpu_dai->channels && cpu_dai->channels != channels) {
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dev_err(rtd->dev, "ASoC: unmatched channel symmetry: %d - %d\n",
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cpu_dai->channels, channels);
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return -EINVAL;
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}
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symmetry = cpu_dai->driver->symmetric_samplebits ||
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rtd->dai_link->symmetric_samplebits;
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for (i = 0; i < rtd->num_codecs; i++)
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symmetry |= rtd->codec_dais[i]->driver->symmetric_samplebits;
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if (symmetry && cpu_dai->sample_bits && cpu_dai->sample_bits != sample_bits) {
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dev_err(rtd->dev, "ASoC: unmatched sample bits symmetry: %d - %d\n",
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cpu_dai->sample_bits, sample_bits);
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return -EINVAL;
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}
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return 0;
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}
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static bool soc_pcm_has_symmetry(struct snd_pcm_substream *substream)
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{
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struct snd_soc_pcm_runtime *rtd = substream->private_data;
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struct snd_soc_dai_driver *cpu_driver = rtd->cpu_dai->driver;
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struct snd_soc_dai_link *link = rtd->dai_link;
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unsigned int symmetry, i;
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symmetry = cpu_driver->symmetric_rates || link->symmetric_rates ||
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cpu_driver->symmetric_channels || link->symmetric_channels ||
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cpu_driver->symmetric_samplebits || link->symmetric_samplebits;
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for (i = 0; i < rtd->num_codecs; i++)
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symmetry = symmetry ||
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rtd->codec_dais[i]->driver->symmetric_rates ||
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rtd->codec_dais[i]->driver->symmetric_channels ||
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rtd->codec_dais[i]->driver->symmetric_samplebits;
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return symmetry;
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}
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static void soc_pcm_set_msb(struct snd_pcm_substream *substream, int bits)
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{
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struct snd_soc_pcm_runtime *rtd = substream->private_data;
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int ret;
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if (!bits)
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return;
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ret = snd_pcm_hw_constraint_msbits(substream->runtime, 0, 0, bits);
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if (ret != 0)
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dev_warn(rtd->dev, "ASoC: Failed to set MSB %d: %d\n",
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bits, ret);
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}
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static void soc_pcm_apply_msb(struct snd_pcm_substream *substream)
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{
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struct snd_soc_pcm_runtime *rtd = substream->private_data;
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struct snd_soc_dai *cpu_dai = rtd->cpu_dai;
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struct snd_soc_dai *codec_dai;
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int i;
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unsigned int bits = 0, cpu_bits;
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if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) {
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for (i = 0; i < rtd->num_codecs; i++) {
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codec_dai = rtd->codec_dais[i];
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if (codec_dai->driver->playback.sig_bits == 0) {
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bits = 0;
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break;
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}
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bits = max(codec_dai->driver->playback.sig_bits, bits);
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}
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cpu_bits = cpu_dai->driver->playback.sig_bits;
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} else {
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for (i = 0; i < rtd->num_codecs; i++) {
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codec_dai = rtd->codec_dais[i];
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if (codec_dai->driver->capture.sig_bits == 0) {
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bits = 0;
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break;
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}
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bits = max(codec_dai->driver->capture.sig_bits, bits);
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}
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cpu_bits = cpu_dai->driver->capture.sig_bits;
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}
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soc_pcm_set_msb(substream, bits);
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soc_pcm_set_msb(substream, cpu_bits);
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}
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static void soc_pcm_init_runtime_hw(struct snd_pcm_substream *substream)
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{
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struct snd_pcm_runtime *runtime = substream->runtime;
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struct snd_pcm_hardware *hw = &runtime->hw;
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struct snd_soc_pcm_runtime *rtd = substream->private_data;
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struct snd_soc_dai_driver *cpu_dai_drv = rtd->cpu_dai->driver;
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struct snd_soc_dai_driver *codec_dai_drv;
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struct snd_soc_pcm_stream *codec_stream;
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struct snd_soc_pcm_stream *cpu_stream;
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unsigned int chan_min = 0, chan_max = UINT_MAX;
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unsigned int rate_min = 0, rate_max = UINT_MAX;
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unsigned int rates = UINT_MAX;
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u64 formats = ULLONG_MAX;
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int i;
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if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK)
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cpu_stream = &cpu_dai_drv->playback;
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else
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cpu_stream = &cpu_dai_drv->capture;
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/* first calculate min/max only for CODECs in the DAI link */
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for (i = 0; i < rtd->num_codecs; i++) {
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/*
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* Skip CODECs which don't support the current stream type.
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* Otherwise, since the rate, channel, and format values will
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* zero in that case, we would have no usable settings left,
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* causing the resulting setup to fail.
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* At least one CODEC should match, otherwise we should have
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* bailed out on a higher level, since there would be no
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* CODEC to support the transfer direction in that case.
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*/
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if (!snd_soc_dai_stream_valid(rtd->codec_dais[i],
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substream->stream))
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continue;
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codec_dai_drv = rtd->codec_dais[i]->driver;
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if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK)
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codec_stream = &codec_dai_drv->playback;
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else
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codec_stream = &codec_dai_drv->capture;
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chan_min = max(chan_min, codec_stream->channels_min);
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chan_max = min(chan_max, codec_stream->channels_max);
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rate_min = max(rate_min, codec_stream->rate_min);
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rate_max = min_not_zero(rate_max, codec_stream->rate_max);
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formats &= codec_stream->formats;
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rates = snd_pcm_rate_mask_intersect(codec_stream->rates, rates);
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}
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/*
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* chan min/max cannot be enforced if there are multiple CODEC DAIs
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* connected to a single CPU DAI, use CPU DAI's directly and let
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* channel allocation be fixed up later
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*/
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if (rtd->num_codecs > 1) {
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chan_min = cpu_stream->channels_min;
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chan_max = cpu_stream->channels_max;
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}
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hw->channels_min = max(chan_min, cpu_stream->channels_min);
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hw->channels_max = min(chan_max, cpu_stream->channels_max);
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if (hw->formats)
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hw->formats &= formats & cpu_stream->formats;
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else
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hw->formats = formats & cpu_stream->formats;
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hw->rates = snd_pcm_rate_mask_intersect(rates, cpu_stream->rates);
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snd_pcm_limit_hw_rates(runtime);
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hw->rate_min = max(hw->rate_min, cpu_stream->rate_min);
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hw->rate_min = max(hw->rate_min, rate_min);
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hw->rate_max = min_not_zero(hw->rate_max, cpu_stream->rate_max);
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hw->rate_max = min_not_zero(hw->rate_max, rate_max);
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}
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/*
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* Called by ALSA when a PCM substream is opened, the runtime->hw record is
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* then initialized and any private data can be allocated. This also calls
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* startup for the cpu DAI, platform, machine and codec DAI.
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*/
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static int soc_pcm_open(struct snd_pcm_substream *substream)
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{
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struct snd_soc_pcm_runtime *rtd = substream->private_data;
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struct snd_pcm_runtime *runtime = substream->runtime;
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struct snd_soc_platform *platform = rtd->platform;
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struct snd_soc_dai *cpu_dai = rtd->cpu_dai;
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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 (i = 0; i < rtd->num_codecs; i++)
|
|
pinctrl_pm_select_default_state(rtd->codec_dais[i]->dev);
|
|
pm_runtime_get_sync(cpu_dai->dev);
|
|
for (i = 0; i < rtd->num_codecs; i++)
|
|
pm_runtime_get_sync(rtd->codec_dais[i]->dev);
|
|
pm_runtime_get_sync(platform->dev);
|
|
|
|
mutex_lock_nested(&rtd->pcm_mutex, rtd->pcm_subclass);
|
|
|
|
/* startup the audio subsystem */
|
|
if (cpu_dai->driver->ops && 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;
|
|
}
|
|
}
|
|
|
|
if (platform->driver->ops && platform->driver->ops->open) {
|
|
ret = platform->driver->ops->open(substream);
|
|
if (ret < 0) {
|
|
dev_err(platform->dev, "ASoC: can't open platform"
|
|
" %s: %d\n", platform->component.name, ret);
|
|
goto platform_err;
|
|
}
|
|
}
|
|
|
|
for (i = 0; i < rtd->num_codecs; i++) {
|
|
codec_dai = rtd->codec_dais[i];
|
|
if (codec_dai->driver->ops && 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 && 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 (i = 0; i < rtd->num_codecs; i++) {
|
|
if (rtd->codec_dais[i]->active) {
|
|
ret = soc_pcm_apply_symmetry(substream,
|
|
rtd->codec_dais[i]);
|
|
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 && rtd->dai_link->ops->shutdown)
|
|
rtd->dai_link->ops->shutdown(substream);
|
|
|
|
machine_err:
|
|
i = rtd->num_codecs;
|
|
|
|
codec_dai_err:
|
|
while (--i >= 0) {
|
|
codec_dai = rtd->codec_dais[i];
|
|
if (codec_dai->driver->ops->shutdown)
|
|
codec_dai->driver->ops->shutdown(substream, codec_dai);
|
|
}
|
|
|
|
if (platform->driver->ops && platform->driver->ops->close)
|
|
platform->driver->ops->close(substream);
|
|
|
|
platform_err:
|
|
if (cpu_dai->driver->ops->shutdown)
|
|
cpu_dai->driver->ops->shutdown(substream, cpu_dai);
|
|
out:
|
|
mutex_unlock(&rtd->pcm_mutex);
|
|
|
|
pm_runtime_mark_last_busy(platform->dev);
|
|
pm_runtime_put_autosuspend(platform->dev);
|
|
for (i = 0; i < rtd->num_codecs; i++) {
|
|
pm_runtime_mark_last_busy(rtd->codec_dais[i]->dev);
|
|
pm_runtime_put_autosuspend(rtd->codec_dais[i]->dev);
|
|
}
|
|
|
|
pm_runtime_mark_last_busy(cpu_dai->dev);
|
|
pm_runtime_put_autosuspend(cpu_dai->dev);
|
|
for (i = 0; i < rtd->num_codecs; i++) {
|
|
if (!rtd->codec_dais[i]->active)
|
|
pinctrl_pm_select_sleep_state(rtd->codec_dais[i]->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 platform 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_platform *platform = rtd->platform;
|
|
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 (i = 0; i < rtd->num_codecs; i++) {
|
|
codec_dai = rtd->codec_dais[i];
|
|
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 (i = 0; i < rtd->num_codecs; i++) {
|
|
codec_dai = rtd->codec_dais[i];
|
|
if (codec_dai->driver->ops->shutdown)
|
|
codec_dai->driver->ops->shutdown(substream, codec_dai);
|
|
}
|
|
|
|
if (rtd->dai_link->ops && rtd->dai_link->ops->shutdown)
|
|
rtd->dai_link->ops->shutdown(substream);
|
|
|
|
if (platform->driver->ops && platform->driver->ops->close)
|
|
platform->driver->ops->close(substream);
|
|
|
|
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);
|
|
|
|
pm_runtime_mark_last_busy(platform->dev);
|
|
pm_runtime_put_autosuspend(platform->dev);
|
|
|
|
for (i = 0; i < rtd->num_codecs; i++) {
|
|
pm_runtime_mark_last_busy(rtd->codec_dais[i]->dev);
|
|
pm_runtime_put_autosuspend(rtd->codec_dais[i]->dev);
|
|
}
|
|
|
|
pm_runtime_mark_last_busy(cpu_dai->dev);
|
|
pm_runtime_put_autosuspend(cpu_dai->dev);
|
|
|
|
for (i = 0; i < rtd->num_codecs; i++) {
|
|
if (!rtd->codec_dais[i]->active)
|
|
pinctrl_pm_select_sleep_state(rtd->codec_dais[i]->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_platform *platform = rtd->platform;
|
|
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 && 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;
|
|
}
|
|
}
|
|
|
|
if (platform->driver->ops && platform->driver->ops->prepare) {
|
|
ret = platform->driver->ops->prepare(substream);
|
|
if (ret < 0) {
|
|
dev_err(platform->dev, "ASoC: platform prepare error:"
|
|
" %d\n", ret);
|
|
goto out;
|
|
}
|
|
}
|
|
|
|
for (i = 0; i < rtd->num_codecs; i++) {
|
|
codec_dai = rtd->codec_dais[i];
|
|
if (codec_dai->driver->ops && 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 && 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 (i = 0; i < rtd->num_codecs; i++)
|
|
snd_soc_dai_digital_mute(rtd->codec_dais[i], 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)
|
|
{
|
|
int ret;
|
|
|
|
if (dai->driver->ops && 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;
|
|
}
|
|
|
|
/*
|
|
* 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_platform *platform = rtd->platform;
|
|
struct snd_soc_dai *cpu_dai = rtd->cpu_dai;
|
|
int i, ret = 0;
|
|
|
|
mutex_lock_nested(&rtd->pcm_mutex, rtd->pcm_subclass);
|
|
|
|
ret = soc_pcm_params_symmetry(substream, params);
|
|
if (ret)
|
|
goto out;
|
|
|
|
if (rtd->dai_link->ops && 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 (i = 0; i < rtd->num_codecs; i++) {
|
|
struct snd_soc_dai *codec_dai = rtd->codec_dais[i];
|
|
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;
|
|
|
|
if (platform->driver->ops && platform->driver->ops->hw_params) {
|
|
ret = platform->driver->ops->hw_params(substream, params);
|
|
if (ret < 0) {
|
|
dev_err(platform->dev, "ASoC: %s hw params failed: %d\n",
|
|
platform->component.name, ret);
|
|
goto platform_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));
|
|
|
|
out:
|
|
mutex_unlock(&rtd->pcm_mutex);
|
|
return ret;
|
|
|
|
platform_err:
|
|
if (cpu_dai->driver->ops && cpu_dai->driver->ops->hw_free)
|
|
cpu_dai->driver->ops->hw_free(substream, cpu_dai);
|
|
|
|
interface_err:
|
|
i = rtd->num_codecs;
|
|
|
|
codec_err:
|
|
while (--i >= 0) {
|
|
struct snd_soc_dai *codec_dai = rtd->codec_dais[i];
|
|
if (codec_dai->driver->ops && codec_dai->driver->ops->hw_free)
|
|
codec_dai->driver->ops->hw_free(substream, codec_dai);
|
|
codec_dai->rate = 0;
|
|
}
|
|
|
|
if (rtd->dai_link->ops && 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_platform *platform = rtd->platform;
|
|
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 (i = 0; i < rtd->num_codecs; i++) {
|
|
codec_dai = rtd->codec_dais[i];
|
|
if (codec_dai->active == 1) {
|
|
codec_dai->rate = 0;
|
|
codec_dai->channels = 0;
|
|
codec_dai->sample_bits = 0;
|
|
}
|
|
}
|
|
|
|
/* apply codec digital mute */
|
|
for (i = 0; i < rtd->num_codecs; i++) {
|
|
if ((playback && rtd->codec_dais[i]->playback_active == 1) ||
|
|
(!playback && rtd->codec_dais[i]->capture_active == 1))
|
|
snd_soc_dai_digital_mute(rtd->codec_dais[i], 1,
|
|
substream->stream);
|
|
}
|
|
|
|
/* free any machine hw params */
|
|
if (rtd->dai_link->ops && rtd->dai_link->ops->hw_free)
|
|
rtd->dai_link->ops->hw_free(substream);
|
|
|
|
/* free any DMA resources */
|
|
if (platform->driver->ops && platform->driver->ops->hw_free)
|
|
platform->driver->ops->hw_free(substream);
|
|
|
|
/* now free hw params for the DAIs */
|
|
for (i = 0; i < rtd->num_codecs; i++) {
|
|
codec_dai = rtd->codec_dais[i];
|
|
if (codec_dai->driver->ops && codec_dai->driver->ops->hw_free)
|
|
codec_dai->driver->ops->hw_free(substream, codec_dai);
|
|
}
|
|
|
|
if (cpu_dai->driver->ops && 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_platform *platform = rtd->platform;
|
|
struct snd_soc_dai *cpu_dai = rtd->cpu_dai;
|
|
struct snd_soc_dai *codec_dai;
|
|
int i, ret;
|
|
|
|
for (i = 0; i < rtd->num_codecs; i++) {
|
|
codec_dai = rtd->codec_dais[i];
|
|
if (codec_dai->driver->ops && codec_dai->driver->ops->trigger) {
|
|
ret = codec_dai->driver->ops->trigger(substream,
|
|
cmd, codec_dai);
|
|
if (ret < 0)
|
|
return ret;
|
|
}
|
|
}
|
|
|
|
if (platform->driver->ops && platform->driver->ops->trigger) {
|
|
ret = platform->driver->ops->trigger(substream, cmd);
|
|
if (ret < 0)
|
|
return ret;
|
|
}
|
|
|
|
if (cpu_dai->driver->ops && 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 && 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_platform *platform = rtd->platform;
|
|
struct snd_soc_dai *cpu_dai = rtd->cpu_dai;
|
|
struct snd_soc_dai *codec_dai;
|
|
int i, ret;
|
|
|
|
for (i = 0; i < rtd->num_codecs; i++) {
|
|
codec_dai = rtd->codec_dais[i];
|
|
if (codec_dai->driver->ops &&
|
|
codec_dai->driver->ops->bespoke_trigger) {
|
|
ret = codec_dai->driver->ops->bespoke_trigger(substream,
|
|
cmd, codec_dai);
|
|
if (ret < 0)
|
|
return ret;
|
|
}
|
|
}
|
|
|
|
if (platform->driver->bespoke_trigger) {
|
|
ret = platform->driver->bespoke_trigger(substream, cmd);
|
|
if (ret < 0)
|
|
return ret;
|
|
}
|
|
|
|
if (cpu_dai->driver->ops && 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, platform driver has the delay callback, than
|
|
* 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_platform *platform = rtd->platform;
|
|
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;
|
|
|
|
if (platform->driver->ops && platform->driver->ops->pointer)
|
|
offset = platform->driver->ops->pointer(substream);
|
|
|
|
if (cpu_dai->driver->ops && cpu_dai->driver->ops->delay)
|
|
delay += cpu_dai->driver->ops->delay(substream, cpu_dai);
|
|
|
|
for (i = 0; i < rtd->num_codecs; i++) {
|
|
codec_dai = rtd->codec_dais[i];
|
|
if (codec_dai->driver->ops && codec_dai->driver->ops->delay)
|
|
codec_delay = max(codec_delay,
|
|
codec_dai->driver->ops->delay(substream,
|
|
codec_dai));
|
|
}
|
|
delay += codec_delay;
|
|
|
|
/*
|
|
* None of the existing platform drivers implement delay(), so
|
|
* for now the codec_dai of first multicodec entry is used
|
|
*/
|
|
if (platform->driver->delay)
|
|
delay += platform->driver->delay(substream, rtd->codec_dais[0]);
|
|
|
|
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 */
|
|
list_for_each_entry(dpcm, &fe->dpcm[stream].be_clients, list_be) {
|
|
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);
|
|
|
|
list_for_each_entry(dpcm, &be->dpcm[stream].fe_clients, list_fe) {
|
|
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;
|
|
|
|
list_for_each_entry_safe(dpcm, d, &fe->dpcm[stream].be_clients, list_be) {
|
|
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;
|
|
int i;
|
|
|
|
if (stream == SNDRV_PCM_STREAM_PLAYBACK) {
|
|
list_for_each_entry(be, &card->rtd_list, list) {
|
|
|
|
if (!be->dai_link->no_pcm)
|
|
continue;
|
|
|
|
if (be->cpu_dai->playback_widget == widget)
|
|
return be;
|
|
|
|
for (i = 0; i < be->num_codecs; i++) {
|
|
struct snd_soc_dai *dai = be->codec_dais[i];
|
|
if (dai->playback_widget == widget)
|
|
return be;
|
|
}
|
|
}
|
|
} else {
|
|
|
|
list_for_each_entry(be, &card->rtd_list, list) {
|
|
|
|
if (!be->dai_link->no_pcm)
|
|
continue;
|
|
|
|
if (be->cpu_dai->capture_widget == widget)
|
|
return be;
|
|
|
|
for (i = 0; i < be->num_codecs; i++) {
|
|
struct snd_soc_dai *dai = be->codec_dais[i];
|
|
if (dai->capture_widget == widget)
|
|
return be;
|
|
}
|
|
}
|
|
}
|
|
|
|
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;
|
|
}
|
|
|
|
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,
|
|
NULL);
|
|
|
|
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;
|
|
int prune = 0;
|
|
|
|
/* Destroy any old FE <--> BE connections */
|
|
list_for_each_entry(dpcm, &fe->dpcm[stream].be_clients, list_be) {
|
|
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 (i = 0; i < dpcm->be->num_codecs; i++) {
|
|
struct snd_soc_dai *dai = dpcm->be->codec_dais[i];
|
|
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;
|
|
|
|
list_for_each_entry(dpcm, &fe->dpcm[stream].be_clients, list_be)
|
|
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 */
|
|
list_for_each_entry(dpcm, &fe->dpcm[stream].be_clients, list_be) {
|
|
|
|
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 */
|
|
list_for_each_entry(dpcm, &fe->dpcm[stream].be_clients, list_be) {
|
|
|
|
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 */
|
|
list_for_each_entry_continue_reverse(dpcm, &fe->dpcm[stream].be_clients, list_be) {
|
|
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,
|
|
u64 formats)
|
|
{
|
|
runtime->hw.rate_min = stream->rate_min;
|
|
runtime->hw.rate_max = stream->rate_max;
|
|
runtime->hw.channels_min = stream->channels_min;
|
|
runtime->hw.channels_max = stream->channels_max;
|
|
if (runtime->hw.formats)
|
|
runtime->hw.formats &= formats & stream->formats;
|
|
else
|
|
runtime->hw.formats = formats & stream->formats;
|
|
runtime->hw.rates = stream->rates;
|
|
}
|
|
|
|
static u64 dpcm_runtime_base_format(struct snd_pcm_substream *substream)
|
|
{
|
|
struct snd_soc_pcm_runtime *fe = substream->private_data;
|
|
struct snd_soc_dpcm *dpcm;
|
|
u64 formats = ULLONG_MAX;
|
|
int stream = substream->stream;
|
|
|
|
if (!fe->dai_link->dpcm_merged_format)
|
|
return formats;
|
|
|
|
/*
|
|
* It returns merged BE codec format
|
|
* if FE want to use it (= dpcm_merged_format)
|
|
*/
|
|
|
|
list_for_each_entry(dpcm, &fe->dpcm[stream].be_clients, list_be) {
|
|
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 (i = 0; i < be->num_codecs; i++) {
|
|
codec_dai_drv = be->codec_dais[i]->driver;
|
|
if (stream == SNDRV_PCM_STREAM_PLAYBACK)
|
|
codec_stream = &codec_dai_drv->playback;
|
|
else
|
|
codec_stream = &codec_dai_drv->capture;
|
|
|
|
formats &= codec_stream->formats;
|
|
}
|
|
}
|
|
|
|
return formats;
|
|
}
|
|
|
|
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;
|
|
u64 format = dpcm_runtime_base_format(substream);
|
|
|
|
if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK)
|
|
dpcm_init_runtime_hw(runtime, &cpu_dai_drv->playback, format);
|
|
else
|
|
dpcm_init_runtime_hw(runtime, &cpu_dai_drv->capture, format);
|
|
}
|
|
|
|
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 */
|
|
list_for_each_entry(dpcm, &fe->dpcm[stream].be_clients, list_be) {
|
|
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;
|
|
int i;
|
|
|
|
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(be_substream, rtd->cpu_dai);
|
|
if (err < 0)
|
|
return err;
|
|
}
|
|
|
|
for (i = 0; i < rtd->num_codecs; i++) {
|
|
if (rtd->codec_dais[i]->active) {
|
|
err = soc_pcm_apply_symmetry(be_substream,
|
|
rtd->codec_dais[i]);
|
|
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 */
|
|
list_for_each_entry(dpcm, &fe->dpcm[stream].be_clients, list_be) {
|
|
|
|
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))
|
|
continue;
|
|
|
|
dev_dbg(be->dev, "ASoC: close BE %s\n",
|
|
dpcm->fe->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 */
|
|
list_for_each_entry(dpcm, &fe->dpcm[stream].be_clients, list_be) {
|
|
|
|
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",
|
|
dpcm->fe->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;
|
|
|
|
list_for_each_entry(dpcm, &fe->dpcm[stream].be_clients, list_be) {
|
|
|
|
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",
|
|
dpcm->fe->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 */
|
|
list_for_each_entry_continue_reverse(dpcm, &fe->dpcm[stream].be_clients, list_be) {
|
|
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->fe->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;
|
|
|
|
list_for_each_entry(dpcm, &fe->dpcm[stream].be_clients, list_be) {
|
|
|
|
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:
|
|
case SNDRV_PCM_TRIGGER_PAUSE_PUSH:
|
|
fe->dpcm[stream].state = SND_SOC_DPCM_STATE_STOP;
|
|
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;
|
|
|
|
list_for_each_entry(dpcm, &fe->dpcm[stream].be_clients, list_be) {
|
|
|
|
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",
|
|
dpcm->fe->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_platform *platform = rtd->platform;
|
|
|
|
if (platform->driver->ops && platform->driver->ops->ioctl)
|
|
return platform->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 */
|
|
list_for_each_entry(dpcm, &fe->dpcm[stream].be_clients, list_be) {
|
|
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;
|
|
}
|
|
|
|
/* 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 old, new, paths;
|
|
|
|
mutex_lock_nested(&card->mutex, SND_SOC_CARD_CLASS_RUNTIME);
|
|
list_for_each_entry(fe, &card->rtd_list, list) {
|
|
struct snd_soc_dapm_widget_list *list;
|
|
|
|
/* make sure link is FE */
|
|
if (!fe->dai_link->dynamic)
|
|
continue;
|
|
|
|
/* only check active links */
|
|
if (!fe->cpu_dai->active)
|
|
continue;
|
|
|
|
/* DAPM sync will call this to update DSP paths */
|
|
dev_dbg(fe->dev, "ASoC: DPCM runtime update for FE %s\n",
|
|
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");
|
|
mutex_unlock(&card->mutex);
|
|
return paths;
|
|
}
|
|
|
|
/* update any new playback paths */
|
|
new = dpcm_process_paths(fe, SNDRV_PCM_STREAM_PLAYBACK, &list, 1);
|
|
if (new) {
|
|
dpcm_run_new_update(fe, SNDRV_PCM_STREAM_PLAYBACK);
|
|
dpcm_clear_pending_state(fe, SNDRV_PCM_STREAM_PLAYBACK);
|
|
dpcm_be_disconnect(fe, SNDRV_PCM_STREAM_PLAYBACK);
|
|
}
|
|
|
|
/* update any old playback paths */
|
|
old = dpcm_process_paths(fe, SNDRV_PCM_STREAM_PLAYBACK, &list, 0);
|
|
if (old) {
|
|
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)
|
|
continue;
|
|
|
|
/* skip if FE isn't currently capturing */
|
|
if (!fe->cpu_dai->capture_active
|
|
|| !fe->codec_dai->capture_active)
|
|
continue;
|
|
|
|
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");
|
|
mutex_unlock(&card->mutex);
|
|
return paths;
|
|
}
|
|
|
|
/* update any new capture paths */
|
|
new = dpcm_process_paths(fe, SNDRV_PCM_STREAM_CAPTURE, &list, 1);
|
|
if (new) {
|
|
dpcm_run_new_update(fe, SNDRV_PCM_STREAM_CAPTURE);
|
|
dpcm_clear_pending_state(fe, SNDRV_PCM_STREAM_CAPTURE);
|
|
dpcm_be_disconnect(fe, SNDRV_PCM_STREAM_CAPTURE);
|
|
}
|
|
|
|
/* update any old capture paths */
|
|
old = dpcm_process_paths(fe, SNDRV_PCM_STREAM_CAPTURE, &list, 0);
|
|
if (old) {
|
|
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);
|
|
}
|
|
|
|
mutex_unlock(&card->mutex);
|
|
return 0;
|
|
}
|
|
int soc_dpcm_be_digital_mute(struct snd_soc_pcm_runtime *fe, int mute)
|
|
{
|
|
struct snd_soc_dpcm *dpcm;
|
|
struct list_head *clients =
|
|
&fe->dpcm[SNDRV_PCM_STREAM_PLAYBACK].be_clients;
|
|
|
|
list_for_each_entry(dpcm, clients, list_be) {
|
|
|
|
struct snd_soc_pcm_runtime *be = dpcm->be;
|
|
int i;
|
|
|
|
if (be->dai_link->ignore_suspend)
|
|
continue;
|
|
|
|
for (i = 0; i < be->num_codecs; i++) {
|
|
struct snd_soc_dai *dai = be->codec_dais[i];
|
|
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 */
|
|
list_for_each_entry(dpcm, &fe->dpcm[stream].be_clients, list_be)
|
|
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 */
|
|
list_for_each_entry(dpcm, &fe->dpcm[stream].be_clients, list_be)
|
|
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;
|
|
}
|
|
|
|
/* create a new pcm */
|
|
int soc_new_pcm(struct snd_soc_pcm_runtime *rtd, int num)
|
|
{
|
|
struct snd_soc_platform *platform = rtd->platform;
|
|
struct snd_soc_dai *codec_dai;
|
|
struct snd_soc_dai *cpu_dai = rtd->cpu_dai;
|
|
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 (i = 0; i < rtd->num_codecs; i++) {
|
|
codec_dai = rtd->codec_dais[i];
|
|
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;
|
|
}
|
|
|
|
if (platform->driver->ops) {
|
|
rtd->ops.ack = platform->driver->ops->ack;
|
|
rtd->ops.copy = platform->driver->ops->copy;
|
|
rtd->ops.silence = platform->driver->ops->silence;
|
|
rtd->ops.page = platform->driver->ops->page;
|
|
rtd->ops.mmap = platform->driver->ops->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);
|
|
|
|
if (platform->driver->pcm_new) {
|
|
ret = platform->driver->pcm_new(rtd);
|
|
if (ret < 0) {
|
|
dev_err(platform->dev,
|
|
"ASoC: pcm constructor failed: %d\n",
|
|
ret);
|
|
return ret;
|
|
}
|
|
}
|
|
|
|
pcm->private_free = platform->driver->pcm_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;
|
|
|
|
list_for_each_entry(dpcm, &be->dpcm[stream].fe_clients, list_fe) {
|
|
|
|
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;
|
|
|
|
list_for_each_entry(dpcm, &be->dpcm[stream].fe_clients, list_fe) {
|
|
|
|
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);
|
|
|
|
int snd_soc_platform_trigger(struct snd_pcm_substream *substream,
|
|
int cmd, struct snd_soc_platform *platform)
|
|
{
|
|
if (platform->driver->ops && platform->driver->ops->trigger)
|
|
return platform->driver->ops->trigger(substream, cmd);
|
|
return 0;
|
|
}
|
|
EXPORT_SYMBOL_GPL(snd_soc_platform_trigger);
|
|
|
|
#ifdef CONFIG_DEBUG_FS
|
|
static 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;
|
|
}
|
|
|
|
list_for_each_entry(dpcm, &fe->dpcm[stream].be_clients, list_be) {
|
|
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;
|
|
}
|
|
|
|
rtd->debugfs_dpcm_state = debugfs_create_file("state", 0444,
|
|
rtd->debugfs_dpcm_root,
|
|
rtd, &dpcm_state_fops);
|
|
}
|
|
#endif
|