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![Peter Ujfalusi](/assets/img/avatar_default.png)
The pcm_mutex is used to prevent concurrent execution of snd_pcm_ops callbacks. This works fine most of the cases but it can not handle setups when the same DAI is used by different rtd, for example: pcm3168a have two DAIs: one for Playback and one for Capture. If the codec is connected to a single CPU DAI we need to have two dai_link to support both playback and capture. In this case the snd_pcm_ops callbacks can be executed in parallel causing unexpected races in DAI drivers. By moving the pcm_mutex up to card level this can be solved while - hopefully - not breaking other setups. Signed-off-by: Peter Ujfalusi <peter.ujfalusi@ti.com> Tested-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com> Link: https://lore.kernel.org/r/20190813104532.16669-1-peter.ujfalusi@ti.com Signed-off-by: Mark Brown <broonie@kernel.org>
968 lines
25 KiB
C
968 lines
25 KiB
C
// SPDX-License-Identifier: GPL-2.0+
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//
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// soc-compress.c -- ALSA SoC Compress
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//
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// Copyright (C) 2012 Intel Corp.
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//
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// Authors: Namarta Kohli <namartax.kohli@intel.com>
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// Ramesh Babu K V <ramesh.babu@linux.intel.com>
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// Vinod Koul <vinod.koul@linux.intel.com>
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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/slab.h>
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#include <linux/workqueue.h>
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#include <sound/core.h>
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#include <sound/compress_params.h>
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#include <sound/compress_driver.h>
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#include <sound/soc.h>
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#include <sound/initval.h>
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#include <sound/soc-dpcm.h>
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static int soc_compr_components_open(struct snd_compr_stream *cstream,
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struct snd_soc_component **last)
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{
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struct snd_soc_pcm_runtime *rtd = cstream->private_data;
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struct snd_soc_component *component;
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struct snd_soc_rtdcom_list *rtdcom;
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int ret;
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for_each_rtdcom(rtd, rtdcom) {
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component = rtdcom->component;
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if (!component->driver->compr_ops ||
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!component->driver->compr_ops->open)
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continue;
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ret = component->driver->compr_ops->open(cstream);
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if (ret < 0) {
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dev_err(component->dev,
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"Compress ASoC: can't open platform %s: %d\n",
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component->name, ret);
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*last = component;
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return ret;
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}
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}
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*last = NULL;
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return 0;
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}
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static int soc_compr_components_free(struct snd_compr_stream *cstream,
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struct snd_soc_component *last)
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{
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struct snd_soc_pcm_runtime *rtd = cstream->private_data;
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struct snd_soc_component *component;
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struct snd_soc_rtdcom_list *rtdcom;
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for_each_rtdcom(rtd, rtdcom) {
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component = rtdcom->component;
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if (component == last)
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break;
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if (!component->driver->compr_ops ||
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!component->driver->compr_ops->free)
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continue;
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component->driver->compr_ops->free(cstream);
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}
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return 0;
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}
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static int soc_compr_open(struct snd_compr_stream *cstream)
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{
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struct snd_soc_pcm_runtime *rtd = cstream->private_data;
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struct snd_soc_component *component;
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struct snd_soc_dai *cpu_dai = rtd->cpu_dai;
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int ret;
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mutex_lock_nested(&rtd->card->pcm_mutex, rtd->card->pcm_subclass);
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if (cpu_dai->driver->cops && cpu_dai->driver->cops->startup) {
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ret = cpu_dai->driver->cops->startup(cstream, cpu_dai);
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if (ret < 0) {
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dev_err(cpu_dai->dev,
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"Compress ASoC: can't open interface %s: %d\n",
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cpu_dai->name, ret);
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goto out;
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}
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}
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ret = soc_compr_components_open(cstream, &component);
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if (ret < 0)
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goto machine_err;
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if (rtd->dai_link->compr_ops && rtd->dai_link->compr_ops->startup) {
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ret = rtd->dai_link->compr_ops->startup(cstream);
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if (ret < 0) {
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dev_err(rtd->dev,
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"Compress ASoC: %s startup failed: %d\n",
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rtd->dai_link->name, ret);
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goto machine_err;
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}
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}
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snd_soc_runtime_activate(rtd, cstream->direction);
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mutex_unlock(&rtd->card->pcm_mutex);
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return 0;
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machine_err:
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soc_compr_components_free(cstream, component);
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if (cpu_dai->driver->cops && cpu_dai->driver->cops->shutdown)
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cpu_dai->driver->cops->shutdown(cstream, cpu_dai);
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out:
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mutex_unlock(&rtd->card->pcm_mutex);
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return ret;
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}
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static int soc_compr_open_fe(struct snd_compr_stream *cstream)
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{
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struct snd_soc_pcm_runtime *fe = cstream->private_data;
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struct snd_pcm_substream *fe_substream =
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fe->pcm->streams[cstream->direction].substream;
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struct snd_soc_component *component;
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struct snd_soc_dai *cpu_dai = fe->cpu_dai;
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struct snd_soc_dpcm *dpcm;
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struct snd_soc_dapm_widget_list *list;
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int stream;
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int ret;
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if (cstream->direction == SND_COMPRESS_PLAYBACK)
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stream = SNDRV_PCM_STREAM_PLAYBACK;
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else
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stream = SNDRV_PCM_STREAM_CAPTURE;
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mutex_lock_nested(&fe->card->mutex, SND_SOC_CARD_CLASS_RUNTIME);
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fe->dpcm[stream].runtime = fe_substream->runtime;
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ret = dpcm_path_get(fe, stream, &list);
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if (ret < 0)
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goto be_err;
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else if (ret == 0)
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dev_dbg(fe->dev, "Compress ASoC: %s no valid %s route\n",
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fe->dai_link->name, stream ? "capture" : "playback");
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/* calculate valid and active FE <-> BE dpcms */
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dpcm_process_paths(fe, stream, &list, 1);
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fe->dpcm[stream].runtime = fe_substream->runtime;
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fe->dpcm[stream].runtime_update = SND_SOC_DPCM_UPDATE_FE;
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ret = dpcm_be_dai_startup(fe, stream);
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if (ret < 0) {
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/* clean up all links */
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for_each_dpcm_be(fe, stream, dpcm)
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dpcm->state = SND_SOC_DPCM_LINK_STATE_FREE;
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dpcm_be_disconnect(fe, stream);
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fe->dpcm[stream].runtime = NULL;
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goto out;
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}
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if (cpu_dai->driver->cops && cpu_dai->driver->cops->startup) {
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ret = cpu_dai->driver->cops->startup(cstream, cpu_dai);
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if (ret < 0) {
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dev_err(cpu_dai->dev,
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"Compress ASoC: can't open interface %s: %d\n",
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cpu_dai->name, ret);
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goto out;
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}
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}
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ret = soc_compr_components_open(cstream, &component);
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if (ret < 0)
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goto open_err;
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if (fe->dai_link->compr_ops && fe->dai_link->compr_ops->startup) {
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ret = fe->dai_link->compr_ops->startup(cstream);
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if (ret < 0) {
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pr_err("Compress ASoC: %s startup failed: %d\n",
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fe->dai_link->name, ret);
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goto machine_err;
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}
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}
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dpcm_clear_pending_state(fe, stream);
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dpcm_path_put(&list);
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fe->dpcm[stream].state = SND_SOC_DPCM_STATE_OPEN;
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fe->dpcm[stream].runtime_update = SND_SOC_DPCM_UPDATE_NO;
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snd_soc_runtime_activate(fe, stream);
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mutex_unlock(&fe->card->mutex);
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return 0;
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machine_err:
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soc_compr_components_free(cstream, component);
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open_err:
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if (cpu_dai->driver->cops && cpu_dai->driver->cops->shutdown)
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cpu_dai->driver->cops->shutdown(cstream, cpu_dai);
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out:
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dpcm_path_put(&list);
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be_err:
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fe->dpcm[stream].runtime_update = SND_SOC_DPCM_UPDATE_NO;
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mutex_unlock(&fe->card->mutex);
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return ret;
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}
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/*
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* Power down the audio subsystem pmdown_time msecs after close is called.
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* This is to ensure there are no pops or clicks in between any music tracks
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* due to DAPM power cycling.
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*/
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static void close_delayed_work(struct work_struct *work)
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{
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struct snd_soc_pcm_runtime *rtd =
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container_of(work, struct snd_soc_pcm_runtime, delayed_work.work);
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struct snd_soc_dai *codec_dai = rtd->codec_dai;
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mutex_lock_nested(&rtd->card->pcm_mutex, rtd->card->pcm_subclass);
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dev_dbg(rtd->dev,
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"Compress ASoC: pop wq checking: %s status: %s waiting: %s\n",
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codec_dai->driver->playback.stream_name,
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codec_dai->playback_active ? "active" : "inactive",
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rtd->pop_wait ? "yes" : "no");
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/* are we waiting on this codec DAI stream */
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if (rtd->pop_wait == 1) {
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rtd->pop_wait = 0;
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snd_soc_dapm_stream_event(rtd, SNDRV_PCM_STREAM_PLAYBACK,
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SND_SOC_DAPM_STREAM_STOP);
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}
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mutex_unlock(&rtd->card->pcm_mutex);
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}
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static int soc_compr_free(struct snd_compr_stream *cstream)
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{
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struct snd_soc_pcm_runtime *rtd = cstream->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 = rtd->codec_dai;
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int stream;
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mutex_lock_nested(&rtd->card->pcm_mutex, rtd->card->pcm_subclass);
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if (cstream->direction == SND_COMPRESS_PLAYBACK)
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stream = SNDRV_PCM_STREAM_PLAYBACK;
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else
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stream = SNDRV_PCM_STREAM_CAPTURE;
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snd_soc_runtime_deactivate(rtd, stream);
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snd_soc_dai_digital_mute(codec_dai, 1, cstream->direction);
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if (!cpu_dai->active)
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cpu_dai->rate = 0;
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if (!codec_dai->active)
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codec_dai->rate = 0;
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if (rtd->dai_link->compr_ops && rtd->dai_link->compr_ops->shutdown)
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rtd->dai_link->compr_ops->shutdown(cstream);
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soc_compr_components_free(cstream, NULL);
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if (cpu_dai->driver->cops && cpu_dai->driver->cops->shutdown)
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cpu_dai->driver->cops->shutdown(cstream, cpu_dai);
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if (cstream->direction == SND_COMPRESS_PLAYBACK) {
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if (snd_soc_runtime_ignore_pmdown_time(rtd)) {
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snd_soc_dapm_stream_event(rtd,
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SNDRV_PCM_STREAM_PLAYBACK,
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SND_SOC_DAPM_STREAM_STOP);
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} else {
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rtd->pop_wait = 1;
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queue_delayed_work(system_power_efficient_wq,
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&rtd->delayed_work,
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msecs_to_jiffies(rtd->pmdown_time));
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}
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} else {
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/* capture streams can be powered down now */
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snd_soc_dapm_stream_event(rtd,
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SNDRV_PCM_STREAM_CAPTURE,
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SND_SOC_DAPM_STREAM_STOP);
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}
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mutex_unlock(&rtd->card->pcm_mutex);
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return 0;
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}
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static int soc_compr_free_fe(struct snd_compr_stream *cstream)
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{
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struct snd_soc_pcm_runtime *fe = cstream->private_data;
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struct snd_soc_dai *cpu_dai = fe->cpu_dai;
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struct snd_soc_dpcm *dpcm;
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int stream, ret;
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mutex_lock_nested(&fe->card->mutex, SND_SOC_CARD_CLASS_RUNTIME);
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if (cstream->direction == SND_COMPRESS_PLAYBACK)
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stream = SNDRV_PCM_STREAM_PLAYBACK;
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else
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stream = SNDRV_PCM_STREAM_CAPTURE;
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snd_soc_runtime_deactivate(fe, stream);
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fe->dpcm[stream].runtime_update = SND_SOC_DPCM_UPDATE_FE;
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ret = dpcm_be_dai_hw_free(fe, stream);
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if (ret < 0)
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dev_err(fe->dev, "Compressed ASoC: hw_free failed: %d\n", ret);
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ret = dpcm_be_dai_shutdown(fe, stream);
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/* mark FE's links ready to prune */
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for_each_dpcm_be(fe, stream, dpcm)
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dpcm->state = SND_SOC_DPCM_LINK_STATE_FREE;
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dpcm_dapm_stream_event(fe, stream, SND_SOC_DAPM_STREAM_STOP);
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fe->dpcm[stream].state = SND_SOC_DPCM_STATE_CLOSE;
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fe->dpcm[stream].runtime_update = SND_SOC_DPCM_UPDATE_NO;
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dpcm_be_disconnect(fe, stream);
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fe->dpcm[stream].runtime = NULL;
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if (fe->dai_link->compr_ops && fe->dai_link->compr_ops->shutdown)
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fe->dai_link->compr_ops->shutdown(cstream);
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soc_compr_components_free(cstream, NULL);
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if (cpu_dai->driver->cops && cpu_dai->driver->cops->shutdown)
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cpu_dai->driver->cops->shutdown(cstream, cpu_dai);
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mutex_unlock(&fe->card->mutex);
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return 0;
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}
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static int soc_compr_components_trigger(struct snd_compr_stream *cstream,
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int cmd)
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{
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struct snd_soc_pcm_runtime *rtd = cstream->private_data;
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struct snd_soc_component *component;
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struct snd_soc_rtdcom_list *rtdcom;
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int ret;
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for_each_rtdcom(rtd, rtdcom) {
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component = rtdcom->component;
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if (!component->driver->compr_ops ||
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!component->driver->compr_ops->trigger)
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continue;
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ret = component->driver->compr_ops->trigger(cstream, cmd);
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if (ret < 0)
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return ret;
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}
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return 0;
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}
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static int soc_compr_trigger(struct snd_compr_stream *cstream, int cmd)
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{
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struct snd_soc_pcm_runtime *rtd = cstream->private_data;
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struct snd_soc_dai *codec_dai = rtd->codec_dai;
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struct snd_soc_dai *cpu_dai = rtd->cpu_dai;
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int ret;
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mutex_lock_nested(&rtd->card->pcm_mutex, rtd->card->pcm_subclass);
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ret = soc_compr_components_trigger(cstream, cmd);
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if (ret < 0)
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goto out;
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if (cpu_dai->driver->cops && cpu_dai->driver->cops->trigger)
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cpu_dai->driver->cops->trigger(cstream, cmd, cpu_dai);
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switch (cmd) {
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case SNDRV_PCM_TRIGGER_START:
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snd_soc_dai_digital_mute(codec_dai, 0, cstream->direction);
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break;
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case SNDRV_PCM_TRIGGER_STOP:
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snd_soc_dai_digital_mute(codec_dai, 1, cstream->direction);
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break;
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}
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out:
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mutex_unlock(&rtd->card->pcm_mutex);
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return ret;
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}
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static int soc_compr_trigger_fe(struct snd_compr_stream *cstream, int cmd)
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{
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struct snd_soc_pcm_runtime *fe = cstream->private_data;
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struct snd_soc_dai *cpu_dai = fe->cpu_dai;
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int ret, stream;
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if (cmd == SND_COMPR_TRIGGER_PARTIAL_DRAIN ||
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cmd == SND_COMPR_TRIGGER_DRAIN)
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return soc_compr_components_trigger(cstream, cmd);
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if (cstream->direction == SND_COMPRESS_PLAYBACK)
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stream = SNDRV_PCM_STREAM_PLAYBACK;
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else
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stream = SNDRV_PCM_STREAM_CAPTURE;
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mutex_lock_nested(&fe->card->mutex, SND_SOC_CARD_CLASS_RUNTIME);
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|
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if (cpu_dai->driver->cops && cpu_dai->driver->cops->trigger) {
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ret = cpu_dai->driver->cops->trigger(cstream, cmd, cpu_dai);
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if (ret < 0)
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goto out;
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}
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|
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ret = soc_compr_components_trigger(cstream, cmd);
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if (ret < 0)
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goto out;
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fe->dpcm[stream].runtime_update = SND_SOC_DPCM_UPDATE_FE;
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|
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ret = dpcm_be_dai_trigger(fe, stream, cmd);
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|
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switch (cmd) {
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case SNDRV_PCM_TRIGGER_START:
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case SNDRV_PCM_TRIGGER_RESUME:
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case SNDRV_PCM_TRIGGER_PAUSE_RELEASE:
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fe->dpcm[stream].state = SND_SOC_DPCM_STATE_START;
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break;
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case SNDRV_PCM_TRIGGER_STOP:
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case SNDRV_PCM_TRIGGER_SUSPEND:
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fe->dpcm[stream].state = SND_SOC_DPCM_STATE_STOP;
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break;
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case SNDRV_PCM_TRIGGER_PAUSE_PUSH:
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fe->dpcm[stream].state = SND_SOC_DPCM_STATE_PAUSED;
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break;
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}
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|
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out:
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fe->dpcm[stream].runtime_update = SND_SOC_DPCM_UPDATE_NO;
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mutex_unlock(&fe->card->mutex);
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return ret;
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}
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|
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static int soc_compr_components_set_params(struct snd_compr_stream *cstream,
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struct snd_compr_params *params)
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{
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struct snd_soc_pcm_runtime *rtd = cstream->private_data;
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struct snd_soc_component *component;
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struct snd_soc_rtdcom_list *rtdcom;
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int ret;
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|
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for_each_rtdcom(rtd, rtdcom) {
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component = rtdcom->component;
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|
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if (!component->driver->compr_ops ||
|
|
!component->driver->compr_ops->set_params)
|
|
continue;
|
|
|
|
ret = component->driver->compr_ops->set_params(cstream, params);
|
|
if (ret < 0)
|
|
return ret;
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int soc_compr_set_params(struct snd_compr_stream *cstream,
|
|
struct snd_compr_params *params)
|
|
{
|
|
struct snd_soc_pcm_runtime *rtd = cstream->private_data;
|
|
struct snd_soc_dai *cpu_dai = rtd->cpu_dai;
|
|
int ret;
|
|
|
|
mutex_lock_nested(&rtd->card->pcm_mutex, rtd->card->pcm_subclass);
|
|
|
|
/*
|
|
* First we call set_params for the CPU DAI, then the component
|
|
* driver this should configure the SoC side. If the machine has
|
|
* compressed ops then we call that as well. The expectation is
|
|
* that these callbacks will configure everything for this compress
|
|
* path, like configuring a PCM port for a CODEC.
|
|
*/
|
|
if (cpu_dai->driver->cops && cpu_dai->driver->cops->set_params) {
|
|
ret = cpu_dai->driver->cops->set_params(cstream, params, cpu_dai);
|
|
if (ret < 0)
|
|
goto err;
|
|
}
|
|
|
|
ret = soc_compr_components_set_params(cstream, params);
|
|
if (ret < 0)
|
|
goto err;
|
|
|
|
if (rtd->dai_link->compr_ops && rtd->dai_link->compr_ops->set_params) {
|
|
ret = rtd->dai_link->compr_ops->set_params(cstream);
|
|
if (ret < 0)
|
|
goto err;
|
|
}
|
|
|
|
if (cstream->direction == SND_COMPRESS_PLAYBACK)
|
|
snd_soc_dapm_stream_event(rtd, SNDRV_PCM_STREAM_PLAYBACK,
|
|
SND_SOC_DAPM_STREAM_START);
|
|
else
|
|
snd_soc_dapm_stream_event(rtd, SNDRV_PCM_STREAM_CAPTURE,
|
|
SND_SOC_DAPM_STREAM_START);
|
|
|
|
/* cancel any delayed stream shutdown that is pending */
|
|
rtd->pop_wait = 0;
|
|
mutex_unlock(&rtd->card->pcm_mutex);
|
|
|
|
cancel_delayed_work_sync(&rtd->delayed_work);
|
|
|
|
return 0;
|
|
|
|
err:
|
|
mutex_unlock(&rtd->card->pcm_mutex);
|
|
return ret;
|
|
}
|
|
|
|
static int soc_compr_set_params_fe(struct snd_compr_stream *cstream,
|
|
struct snd_compr_params *params)
|
|
{
|
|
struct snd_soc_pcm_runtime *fe = cstream->private_data;
|
|
struct snd_pcm_substream *fe_substream =
|
|
fe->pcm->streams[cstream->direction].substream;
|
|
struct snd_soc_dai *cpu_dai = fe->cpu_dai;
|
|
int ret, stream;
|
|
|
|
if (cstream->direction == SND_COMPRESS_PLAYBACK)
|
|
stream = SNDRV_PCM_STREAM_PLAYBACK;
|
|
else
|
|
stream = SNDRV_PCM_STREAM_CAPTURE;
|
|
|
|
mutex_lock_nested(&fe->card->mutex, SND_SOC_CARD_CLASS_RUNTIME);
|
|
|
|
/*
|
|
* Create an empty hw_params for the BE as the machine driver must
|
|
* fix this up to match DSP decoder and ASRC configuration.
|
|
* I.e. machine driver fixup for compressed BE is mandatory.
|
|
*/
|
|
memset(&fe->dpcm[fe_substream->stream].hw_params, 0,
|
|
sizeof(struct snd_pcm_hw_params));
|
|
|
|
fe->dpcm[stream].runtime_update = SND_SOC_DPCM_UPDATE_FE;
|
|
|
|
ret = dpcm_be_dai_hw_params(fe, stream);
|
|
if (ret < 0)
|
|
goto out;
|
|
|
|
ret = dpcm_be_dai_prepare(fe, stream);
|
|
if (ret < 0)
|
|
goto out;
|
|
|
|
if (cpu_dai->driver->cops && cpu_dai->driver->cops->set_params) {
|
|
ret = cpu_dai->driver->cops->set_params(cstream, params, cpu_dai);
|
|
if (ret < 0)
|
|
goto out;
|
|
}
|
|
|
|
ret = soc_compr_components_set_params(cstream, params);
|
|
if (ret < 0)
|
|
goto out;
|
|
|
|
if (fe->dai_link->compr_ops && fe->dai_link->compr_ops->set_params) {
|
|
ret = fe->dai_link->compr_ops->set_params(cstream);
|
|
if (ret < 0)
|
|
goto out;
|
|
}
|
|
|
|
dpcm_dapm_stream_event(fe, stream, SND_SOC_DAPM_STREAM_START);
|
|
fe->dpcm[stream].state = SND_SOC_DPCM_STATE_PREPARE;
|
|
|
|
out:
|
|
fe->dpcm[stream].runtime_update = SND_SOC_DPCM_UPDATE_NO;
|
|
mutex_unlock(&fe->card->mutex);
|
|
return ret;
|
|
}
|
|
|
|
static int soc_compr_get_params(struct snd_compr_stream *cstream,
|
|
struct snd_codec *params)
|
|
{
|
|
struct snd_soc_pcm_runtime *rtd = cstream->private_data;
|
|
struct snd_soc_component *component;
|
|
struct snd_soc_rtdcom_list *rtdcom;
|
|
struct snd_soc_dai *cpu_dai = rtd->cpu_dai;
|
|
int ret = 0;
|
|
|
|
mutex_lock_nested(&rtd->card->pcm_mutex, rtd->card->pcm_subclass);
|
|
|
|
if (cpu_dai->driver->cops && cpu_dai->driver->cops->get_params) {
|
|
ret = cpu_dai->driver->cops->get_params(cstream, params, cpu_dai);
|
|
if (ret < 0)
|
|
goto err;
|
|
}
|
|
|
|
for_each_rtdcom(rtd, rtdcom) {
|
|
component = rtdcom->component;
|
|
|
|
if (!component->driver->compr_ops ||
|
|
!component->driver->compr_ops->get_params)
|
|
continue;
|
|
|
|
ret = component->driver->compr_ops->get_params(cstream, params);
|
|
break;
|
|
}
|
|
|
|
err:
|
|
mutex_unlock(&rtd->card->pcm_mutex);
|
|
return ret;
|
|
}
|
|
|
|
static int soc_compr_get_caps(struct snd_compr_stream *cstream,
|
|
struct snd_compr_caps *caps)
|
|
{
|
|
struct snd_soc_pcm_runtime *rtd = cstream->private_data;
|
|
struct snd_soc_component *component;
|
|
struct snd_soc_rtdcom_list *rtdcom;
|
|
int ret = 0;
|
|
|
|
mutex_lock_nested(&rtd->card->pcm_mutex, rtd->card->pcm_subclass);
|
|
|
|
for_each_rtdcom(rtd, rtdcom) {
|
|
component = rtdcom->component;
|
|
|
|
if (!component->driver->compr_ops ||
|
|
!component->driver->compr_ops->get_caps)
|
|
continue;
|
|
|
|
ret = component->driver->compr_ops->get_caps(cstream, caps);
|
|
break;
|
|
}
|
|
|
|
mutex_unlock(&rtd->card->pcm_mutex);
|
|
return ret;
|
|
}
|
|
|
|
static int soc_compr_get_codec_caps(struct snd_compr_stream *cstream,
|
|
struct snd_compr_codec_caps *codec)
|
|
{
|
|
struct snd_soc_pcm_runtime *rtd = cstream->private_data;
|
|
struct snd_soc_component *component;
|
|
struct snd_soc_rtdcom_list *rtdcom;
|
|
int ret = 0;
|
|
|
|
mutex_lock_nested(&rtd->card->pcm_mutex, rtd->card->pcm_subclass);
|
|
|
|
for_each_rtdcom(rtd, rtdcom) {
|
|
component = rtdcom->component;
|
|
|
|
if (!component->driver->compr_ops ||
|
|
!component->driver->compr_ops->get_codec_caps)
|
|
continue;
|
|
|
|
ret = component->driver->compr_ops->get_codec_caps(cstream,
|
|
codec);
|
|
break;
|
|
}
|
|
|
|
mutex_unlock(&rtd->card->pcm_mutex);
|
|
return ret;
|
|
}
|
|
|
|
static int soc_compr_ack(struct snd_compr_stream *cstream, size_t bytes)
|
|
{
|
|
struct snd_soc_pcm_runtime *rtd = cstream->private_data;
|
|
struct snd_soc_component *component;
|
|
struct snd_soc_rtdcom_list *rtdcom;
|
|
struct snd_soc_dai *cpu_dai = rtd->cpu_dai;
|
|
int ret = 0;
|
|
|
|
mutex_lock_nested(&rtd->card->pcm_mutex, rtd->card->pcm_subclass);
|
|
|
|
if (cpu_dai->driver->cops && cpu_dai->driver->cops->ack) {
|
|
ret = cpu_dai->driver->cops->ack(cstream, bytes, cpu_dai);
|
|
if (ret < 0)
|
|
goto err;
|
|
}
|
|
|
|
for_each_rtdcom(rtd, rtdcom) {
|
|
component = rtdcom->component;
|
|
|
|
if (!component->driver->compr_ops ||
|
|
!component->driver->compr_ops->ack)
|
|
continue;
|
|
|
|
ret = component->driver->compr_ops->ack(cstream, bytes);
|
|
if (ret < 0)
|
|
goto err;
|
|
}
|
|
|
|
err:
|
|
mutex_unlock(&rtd->card->pcm_mutex);
|
|
return ret;
|
|
}
|
|
|
|
static int soc_compr_pointer(struct snd_compr_stream *cstream,
|
|
struct snd_compr_tstamp *tstamp)
|
|
{
|
|
struct snd_soc_pcm_runtime *rtd = cstream->private_data;
|
|
struct snd_soc_component *component;
|
|
struct snd_soc_rtdcom_list *rtdcom;
|
|
int ret = 0;
|
|
struct snd_soc_dai *cpu_dai = rtd->cpu_dai;
|
|
|
|
mutex_lock_nested(&rtd->card->pcm_mutex, rtd->card->pcm_subclass);
|
|
|
|
if (cpu_dai->driver->cops && cpu_dai->driver->cops->pointer)
|
|
cpu_dai->driver->cops->pointer(cstream, tstamp, cpu_dai);
|
|
|
|
for_each_rtdcom(rtd, rtdcom) {
|
|
component = rtdcom->component;
|
|
|
|
if (!component->driver->compr_ops ||
|
|
!component->driver->compr_ops->pointer)
|
|
continue;
|
|
|
|
ret = component->driver->compr_ops->pointer(cstream, tstamp);
|
|
break;
|
|
}
|
|
|
|
mutex_unlock(&rtd->card->pcm_mutex);
|
|
return ret;
|
|
}
|
|
|
|
static int soc_compr_copy(struct snd_compr_stream *cstream,
|
|
char __user *buf, size_t count)
|
|
{
|
|
struct snd_soc_pcm_runtime *rtd = cstream->private_data;
|
|
struct snd_soc_component *component;
|
|
struct snd_soc_rtdcom_list *rtdcom;
|
|
int ret = 0;
|
|
|
|
mutex_lock_nested(&rtd->card->pcm_mutex, rtd->card->pcm_subclass);
|
|
|
|
for_each_rtdcom(rtd, rtdcom) {
|
|
component = rtdcom->component;
|
|
|
|
if (!component->driver->compr_ops ||
|
|
!component->driver->compr_ops->copy)
|
|
continue;
|
|
|
|
ret = component->driver->compr_ops->copy(cstream, buf, count);
|
|
break;
|
|
}
|
|
|
|
mutex_unlock(&rtd->card->pcm_mutex);
|
|
return ret;
|
|
}
|
|
|
|
static int soc_compr_set_metadata(struct snd_compr_stream *cstream,
|
|
struct snd_compr_metadata *metadata)
|
|
{
|
|
struct snd_soc_pcm_runtime *rtd = cstream->private_data;
|
|
struct snd_soc_component *component;
|
|
struct snd_soc_rtdcom_list *rtdcom;
|
|
struct snd_soc_dai *cpu_dai = rtd->cpu_dai;
|
|
int ret;
|
|
|
|
if (cpu_dai->driver->cops && cpu_dai->driver->cops->set_metadata) {
|
|
ret = cpu_dai->driver->cops->set_metadata(cstream, metadata, cpu_dai);
|
|
if (ret < 0)
|
|
return ret;
|
|
}
|
|
|
|
for_each_rtdcom(rtd, rtdcom) {
|
|
component = rtdcom->component;
|
|
|
|
if (!component->driver->compr_ops ||
|
|
!component->driver->compr_ops->set_metadata)
|
|
continue;
|
|
|
|
ret = component->driver->compr_ops->set_metadata(cstream,
|
|
metadata);
|
|
if (ret < 0)
|
|
return ret;
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int soc_compr_get_metadata(struct snd_compr_stream *cstream,
|
|
struct snd_compr_metadata *metadata)
|
|
{
|
|
struct snd_soc_pcm_runtime *rtd = cstream->private_data;
|
|
struct snd_soc_component *component;
|
|
struct snd_soc_rtdcom_list *rtdcom;
|
|
struct snd_soc_dai *cpu_dai = rtd->cpu_dai;
|
|
int ret;
|
|
|
|
if (cpu_dai->driver->cops && cpu_dai->driver->cops->get_metadata) {
|
|
ret = cpu_dai->driver->cops->get_metadata(cstream, metadata, cpu_dai);
|
|
if (ret < 0)
|
|
return ret;
|
|
}
|
|
|
|
for_each_rtdcom(rtd, rtdcom) {
|
|
component = rtdcom->component;
|
|
|
|
if (!component->driver->compr_ops ||
|
|
!component->driver->compr_ops->get_metadata)
|
|
continue;
|
|
|
|
return component->driver->compr_ops->get_metadata(cstream,
|
|
metadata);
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
/* ASoC Compress operations */
|
|
static struct snd_compr_ops soc_compr_ops = {
|
|
.open = soc_compr_open,
|
|
.free = soc_compr_free,
|
|
.set_params = soc_compr_set_params,
|
|
.set_metadata = soc_compr_set_metadata,
|
|
.get_metadata = soc_compr_get_metadata,
|
|
.get_params = soc_compr_get_params,
|
|
.trigger = soc_compr_trigger,
|
|
.pointer = soc_compr_pointer,
|
|
.ack = soc_compr_ack,
|
|
.get_caps = soc_compr_get_caps,
|
|
.get_codec_caps = soc_compr_get_codec_caps
|
|
};
|
|
|
|
/* ASoC Dynamic Compress operations */
|
|
static struct snd_compr_ops soc_compr_dyn_ops = {
|
|
.open = soc_compr_open_fe,
|
|
.free = soc_compr_free_fe,
|
|
.set_params = soc_compr_set_params_fe,
|
|
.get_params = soc_compr_get_params,
|
|
.set_metadata = soc_compr_set_metadata,
|
|
.get_metadata = soc_compr_get_metadata,
|
|
.trigger = soc_compr_trigger_fe,
|
|
.pointer = soc_compr_pointer,
|
|
.ack = soc_compr_ack,
|
|
.get_caps = soc_compr_get_caps,
|
|
.get_codec_caps = soc_compr_get_codec_caps
|
|
};
|
|
|
|
/**
|
|
* snd_soc_new_compress - create a new compress.
|
|
*
|
|
* @rtd: The runtime for which we will create compress
|
|
* @num: the device index number (zero based - shared with normal PCMs)
|
|
*
|
|
* Return: 0 for success, else error.
|
|
*/
|
|
int snd_soc_new_compress(struct snd_soc_pcm_runtime *rtd, int num)
|
|
{
|
|
struct snd_soc_component *component;
|
|
struct snd_soc_rtdcom_list *rtdcom;
|
|
struct snd_soc_dai *codec_dai = rtd->codec_dai;
|
|
struct snd_soc_dai *cpu_dai = rtd->cpu_dai;
|
|
struct snd_compr *compr;
|
|
struct snd_pcm *be_pcm;
|
|
char new_name[64];
|
|
int ret = 0, direction = 0;
|
|
int playback = 0, capture = 0;
|
|
|
|
if (rtd->num_codecs > 1) {
|
|
dev_err(rtd->card->dev,
|
|
"Compress ASoC: Multicodec not supported\n");
|
|
return -EINVAL;
|
|
}
|
|
|
|
/* check client and interface hw capabilities */
|
|
if (snd_soc_dai_stream_valid(codec_dai, SNDRV_PCM_STREAM_PLAYBACK) &&
|
|
snd_soc_dai_stream_valid(cpu_dai, SNDRV_PCM_STREAM_PLAYBACK))
|
|
playback = 1;
|
|
if (snd_soc_dai_stream_valid(codec_dai, SNDRV_PCM_STREAM_CAPTURE) &&
|
|
snd_soc_dai_stream_valid(cpu_dai, SNDRV_PCM_STREAM_CAPTURE))
|
|
capture = 1;
|
|
|
|
/*
|
|
* Compress devices are unidirectional so only one of the directions
|
|
* should be set, check for that (xor)
|
|
*/
|
|
if (playback + capture != 1) {
|
|
dev_err(rtd->card->dev,
|
|
"Compress ASoC: Invalid direction for P %d, C %d\n",
|
|
playback, capture);
|
|
return -EINVAL;
|
|
}
|
|
|
|
if (playback)
|
|
direction = SND_COMPRESS_PLAYBACK;
|
|
else
|
|
direction = SND_COMPRESS_CAPTURE;
|
|
|
|
compr = devm_kzalloc(rtd->card->dev, sizeof(*compr), GFP_KERNEL);
|
|
if (!compr)
|
|
return -ENOMEM;
|
|
|
|
compr->ops = devm_kzalloc(rtd->card->dev, sizeof(soc_compr_ops),
|
|
GFP_KERNEL);
|
|
if (!compr->ops)
|
|
return -ENOMEM;
|
|
|
|
if (rtd->dai_link->dynamic) {
|
|
snprintf(new_name, sizeof(new_name), "(%s)",
|
|
rtd->dai_link->stream_name);
|
|
|
|
ret = snd_pcm_new_internal(rtd->card->snd_card, new_name, num,
|
|
rtd->dai_link->dpcm_playback,
|
|
rtd->dai_link->dpcm_capture, &be_pcm);
|
|
if (ret < 0) {
|
|
dev_err(rtd->card->dev,
|
|
"Compress ASoC: can't create compressed for %s: %d\n",
|
|
rtd->dai_link->name, ret);
|
|
return ret;
|
|
}
|
|
|
|
rtd->pcm = be_pcm;
|
|
rtd->fe_compr = 1;
|
|
if (rtd->dai_link->dpcm_playback)
|
|
be_pcm->streams[SNDRV_PCM_STREAM_PLAYBACK].substream->private_data = rtd;
|
|
else if (rtd->dai_link->dpcm_capture)
|
|
be_pcm->streams[SNDRV_PCM_STREAM_CAPTURE].substream->private_data = rtd;
|
|
memcpy(compr->ops, &soc_compr_dyn_ops, sizeof(soc_compr_dyn_ops));
|
|
} else {
|
|
snprintf(new_name, sizeof(new_name), "%s %s-%d",
|
|
rtd->dai_link->stream_name, codec_dai->name, num);
|
|
|
|
memcpy(compr->ops, &soc_compr_ops, sizeof(soc_compr_ops));
|
|
}
|
|
|
|
for_each_rtdcom(rtd, rtdcom) {
|
|
component = rtdcom->component;
|
|
|
|
if (!component->driver->compr_ops ||
|
|
!component->driver->compr_ops->copy)
|
|
continue;
|
|
|
|
compr->ops->copy = soc_compr_copy;
|
|
break;
|
|
}
|
|
|
|
mutex_init(&compr->lock);
|
|
ret = snd_compress_new(rtd->card->snd_card, num, direction,
|
|
new_name, compr);
|
|
if (ret < 0) {
|
|
component = rtd->codec_dai->component;
|
|
dev_err(component->dev,
|
|
"Compress ASoC: can't create compress for codec %s: %d\n",
|
|
component->name, ret);
|
|
return ret;
|
|
}
|
|
|
|
/* DAPM dai link stream work */
|
|
INIT_DELAYED_WORK(&rtd->delayed_work, close_delayed_work);
|
|
|
|
rtd->compr = compr;
|
|
compr->private_data = rtd;
|
|
|
|
dev_info(rtd->card->dev, "Compress ASoC: %s <-> %s mapping ok\n",
|
|
codec_dai->name, cpu_dai->name);
|
|
|
|
return 0;
|
|
}
|
|
EXPORT_SYMBOL_GPL(snd_soc_new_compress);
|