| /* |
| * soc-compress.c -- ALSA SoC Compress |
| * |
| * Copyright (C) 2012 Intel Corp. |
| * |
| * Authors: Namarta Kohli <namartax.kohli@intel.com> |
| * Ramesh Babu K V <ramesh.babu@linux.intel.com> |
| * Vinod Koul <vinod.koul@linux.intel.com> |
| * |
| * This program is free software; you can redistribute it and/or modify it |
| * under the terms of the GNU General Public License as published by the |
| * Free Software Foundation; either version 2 of the License, or (at your |
| * option) any later version. |
| * |
| */ |
| |
| #include <linux/kernel.h> |
| #include <linux/init.h> |
| #include <linux/delay.h> |
| #include <linux/slab.h> |
| #include <linux/workqueue.h> |
| #include <sound/core.h> |
| #include <sound/compress_params.h> |
| #include <sound/compress_driver.h> |
| #include <sound/soc.h> |
| #include <sound/initval.h> |
| #include <sound/soc-dpcm.h> |
| |
| static int soc_compr_open(struct snd_compr_stream *cstream) |
| { |
| struct snd_soc_pcm_runtime *rtd = cstream->private_data; |
| struct snd_soc_platform *platform = rtd->platform; |
| int ret = 0; |
| |
| mutex_lock_nested(&rtd->pcm_mutex, rtd->pcm_subclass); |
| |
| if (platform->driver->compr_ops && platform->driver->compr_ops->open) { |
| ret = platform->driver->compr_ops->open(cstream); |
| if (ret < 0) { |
| pr_err("compress asoc: can't open platform %s\n", |
| platform->component.name); |
| goto out; |
| } |
| } |
| |
| if (rtd->dai_link->compr_ops && rtd->dai_link->compr_ops->startup) { |
| ret = rtd->dai_link->compr_ops->startup(cstream); |
| if (ret < 0) { |
| pr_err("compress asoc: %s startup failed\n", rtd->dai_link->name); |
| goto machine_err; |
| } |
| } |
| |
| snd_soc_runtime_activate(rtd, cstream->direction); |
| |
| mutex_unlock(&rtd->pcm_mutex); |
| |
| return 0; |
| |
| machine_err: |
| if (platform->driver->compr_ops && platform->driver->compr_ops->free) |
| platform->driver->compr_ops->free(cstream); |
| out: |
| mutex_unlock(&rtd->pcm_mutex); |
| return ret; |
| } |
| |
| static int soc_compr_open_fe(struct snd_compr_stream *cstream) |
| { |
| struct snd_soc_pcm_runtime *fe = cstream->private_data; |
| struct snd_pcm_substream *fe_substream = fe->pcm->streams[0].substream; |
| struct snd_soc_platform *platform = fe->platform; |
| struct snd_soc_dpcm *dpcm; |
| struct snd_soc_dapm_widget_list *list; |
| int stream; |
| int ret = 0; |
| |
| 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); |
| |
| if (platform->driver->compr_ops && platform->driver->compr_ops->open) { |
| ret = platform->driver->compr_ops->open(cstream); |
| if (ret < 0) { |
| pr_err("compress asoc: can't open platform %s\n", |
| platform->component.name); |
| goto out; |
| } |
| } |
| |
| if (fe->dai_link->compr_ops && fe->dai_link->compr_ops->startup) { |
| ret = fe->dai_link->compr_ops->startup(cstream); |
| if (ret < 0) { |
| pr_err("compress asoc: %s startup failed\n", fe->dai_link->name); |
| goto machine_err; |
| } |
| } |
| |
| fe->dpcm[stream].runtime = fe_substream->runtime; |
| |
| ret = dpcm_path_get(fe, stream, &list); |
| if (ret < 0) |
| goto fe_err; |
| 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); |
| |
| fe->dpcm[stream].runtime_update = SND_SOC_DPCM_UPDATE_FE; |
| |
| ret = dpcm_be_dai_startup(fe, stream); |
| 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; |
| goto fe_err; |
| } |
| |
| dpcm_clear_pending_state(fe, stream); |
| dpcm_path_put(&list); |
| |
| fe->dpcm[stream].state = SND_SOC_DPCM_STATE_OPEN; |
| fe->dpcm[stream].runtime_update = SND_SOC_DPCM_UPDATE_NO; |
| |
| snd_soc_runtime_activate(fe, stream); |
| |
| mutex_unlock(&fe->card->mutex); |
| |
| return 0; |
| |
| fe_err: |
| if (fe->dai_link->compr_ops && fe->dai_link->compr_ops->shutdown) |
| fe->dai_link->compr_ops->shutdown(cstream); |
| machine_err: |
| if (platform->driver->compr_ops && platform->driver->compr_ops->free) |
| platform->driver->compr_ops->free(cstream); |
| out: |
| fe->dpcm[stream].runtime_update = SND_SOC_DPCM_UPDATE_NO; |
| mutex_unlock(&fe->card->mutex); |
| 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_dai; |
| |
| 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); |
| } |
| |
| static int soc_compr_free(struct snd_compr_stream *cstream) |
| { |
| struct snd_soc_pcm_runtime *rtd = cstream->private_data; |
| struct snd_soc_platform *platform = rtd->platform; |
| struct snd_soc_dai *cpu_dai = rtd->cpu_dai; |
| struct snd_soc_dai *codec_dai = rtd->codec_dai; |
| int stream; |
| |
| mutex_lock_nested(&rtd->pcm_mutex, rtd->pcm_subclass); |
| |
| if (cstream->direction == SND_COMPRESS_PLAYBACK) |
| stream = SNDRV_PCM_STREAM_PLAYBACK; |
| else |
| stream = SNDRV_PCM_STREAM_CAPTURE; |
| |
| snd_soc_runtime_deactivate(rtd, stream); |
| |
| snd_soc_dai_digital_mute(codec_dai, 1, cstream->direction); |
| |
| if (!cpu_dai->active) |
| cpu_dai->rate = 0; |
| |
| if (!codec_dai->active) |
| codec_dai->rate = 0; |
| |
| |
| if (rtd->dai_link->compr_ops && rtd->dai_link->compr_ops->shutdown) |
| rtd->dai_link->compr_ops->shutdown(cstream); |
| |
| if (platform->driver->compr_ops && platform->driver->compr_ops->free) |
| platform->driver->compr_ops->free(cstream); |
| |
| if (cstream->direction == SND_COMPRESS_PLAYBACK) { |
| if (snd_soc_runtime_ignore_pmdown_time(rtd)) { |
| snd_soc_dapm_stream_event(rtd, |
| SNDRV_PCM_STREAM_PLAYBACK, |
| SND_SOC_DAPM_STREAM_STOP); |
| } else { |
| 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); |
| return 0; |
| } |
| |
| static int soc_compr_free_fe(struct snd_compr_stream *cstream) |
| { |
| struct snd_soc_pcm_runtime *fe = cstream->private_data; |
| struct snd_soc_platform *platform = fe->platform; |
| struct snd_soc_dpcm *dpcm; |
| int stream, ret; |
| |
| mutex_lock_nested(&fe->card->mutex, SND_SOC_CARD_CLASS_RUNTIME); |
| |
| if (cstream->direction == SND_COMPRESS_PLAYBACK) |
| stream = SNDRV_PCM_STREAM_PLAYBACK; |
| else |
| stream = SNDRV_PCM_STREAM_CAPTURE; |
| |
| snd_soc_runtime_deactivate(fe, stream); |
| |
| fe->dpcm[stream].runtime_update = SND_SOC_DPCM_UPDATE_FE; |
| |
| ret = dpcm_be_dai_hw_free(fe, stream); |
| if (ret < 0) |
| dev_err(fe->dev, "compressed hw_free failed %d\n", ret); |
| |
| ret = dpcm_be_dai_shutdown(fe, stream); |
| |
| /* 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_dapm_stream_event(fe, stream, SND_SOC_DAPM_STREAM_STOP); |
| |
| fe->dpcm[stream].state = SND_SOC_DPCM_STATE_CLOSE; |
| fe->dpcm[stream].runtime_update = SND_SOC_DPCM_UPDATE_NO; |
| |
| dpcm_be_disconnect(fe, stream); |
| |
| fe->dpcm[stream].runtime = NULL; |
| |
| if (fe->dai_link->compr_ops && fe->dai_link->compr_ops->shutdown) |
| fe->dai_link->compr_ops->shutdown(cstream); |
| |
| if (platform->driver->compr_ops && platform->driver->compr_ops->free) |
| platform->driver->compr_ops->free(cstream); |
| |
| mutex_unlock(&fe->card->mutex); |
| return 0; |
| } |
| |
| static int soc_compr_trigger(struct snd_compr_stream *cstream, int cmd) |
| { |
| |
| struct snd_soc_pcm_runtime *rtd = cstream->private_data; |
| struct snd_soc_platform *platform = rtd->platform; |
| struct snd_soc_dai *codec_dai = rtd->codec_dai; |
| int ret = 0; |
| |
| mutex_lock_nested(&rtd->pcm_mutex, rtd->pcm_subclass); |
| |
| if (platform->driver->compr_ops && platform->driver->compr_ops->trigger) { |
| ret = platform->driver->compr_ops->trigger(cstream, cmd); |
| if (ret < 0) |
| goto out; |
| } |
| |
| switch (cmd) { |
| case SNDRV_PCM_TRIGGER_START: |
| snd_soc_dai_digital_mute(codec_dai, 0, cstream->direction); |
| break; |
| case SNDRV_PCM_TRIGGER_STOP: |
| snd_soc_dai_digital_mute(codec_dai, 1, cstream->direction); |
| break; |
| } |
| |
| out: |
| mutex_unlock(&rtd->pcm_mutex); |
| return ret; |
| } |
| |
| static int soc_compr_trigger_fe(struct snd_compr_stream *cstream, int cmd) |
| { |
| struct snd_soc_pcm_runtime *fe = cstream->private_data; |
| struct snd_soc_platform *platform = fe->platform; |
| int ret = 0, stream; |
| |
| if (cmd == SND_COMPR_TRIGGER_PARTIAL_DRAIN || |
| cmd == SND_COMPR_TRIGGER_DRAIN) { |
| |
| if (platform->driver->compr_ops && |
| platform->driver->compr_ops->trigger) |
| return platform->driver->compr_ops->trigger(cstream, |
| cmd); |
| } |
| |
| 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); |
| |
| if (platform->driver->compr_ops && platform->driver->compr_ops->trigger) { |
| ret = platform->driver->compr_ops->trigger(cstream, cmd); |
| if (ret < 0) |
| goto out; |
| } |
| |
| fe->dpcm[stream].runtime_update = SND_SOC_DPCM_UPDATE_FE; |
| |
| ret = dpcm_be_dai_trigger(fe, stream, cmd); |
| |
| switch (cmd) { |
| case SNDRV_PCM_TRIGGER_START: |
| case SNDRV_PCM_TRIGGER_RESUME: |
| case SNDRV_PCM_TRIGGER_PAUSE_RELEASE: |
| fe->dpcm[stream].state = SND_SOC_DPCM_STATE_START; |
| break; |
| case SNDRV_PCM_TRIGGER_STOP: |
| case SNDRV_PCM_TRIGGER_SUSPEND: |
| fe->dpcm[stream].state = SND_SOC_DPCM_STATE_STOP; |
| break; |
| case SNDRV_PCM_TRIGGER_PAUSE_PUSH: |
| fe->dpcm[stream].state = SND_SOC_DPCM_STATE_PAUSED; |
| break; |
| } |
| |
| out: |
| fe->dpcm[stream].runtime_update = SND_SOC_DPCM_UPDATE_NO; |
| mutex_unlock(&fe->card->mutex); |
| return ret; |
| } |
| |
| 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_platform *platform = rtd->platform; |
| int ret = 0; |
| |
| mutex_lock_nested(&rtd->pcm_mutex, rtd->pcm_subclass); |
| |
| /* first we call set_params for the platform driver |
| * this should configure the soc side |
| * if the machine has compressed ops then we call that as well |
| * expectation is that platform and machine will configure everything |
| * for this compress path, like configuring pcm port for codec |
| */ |
| if (platform->driver->compr_ops && platform->driver->compr_ops->set_params) { |
| ret = platform->driver->compr_ops->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->pcm_mutex); |
| |
| cancel_delayed_work_sync(&rtd->delayed_work); |
| |
| return ret; |
| |
| err: |
| mutex_unlock(&rtd->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[0].substream; |
| struct snd_soc_platform *platform = fe->platform; |
| int ret = 0, 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); |
| |
| if (platform->driver->compr_ops && platform->driver->compr_ops->set_params) { |
| ret = platform->driver->compr_ops->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; |
| } |
| |
| /* |
| * 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; |
| |
| 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_platform *platform = rtd->platform; |
| int ret = 0; |
| |
| mutex_lock_nested(&rtd->pcm_mutex, rtd->pcm_subclass); |
| |
| if (platform->driver->compr_ops && platform->driver->compr_ops->get_params) |
| ret = platform->driver->compr_ops->get_params(cstream, params); |
| |
| mutex_unlock(&rtd->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_platform *platform = rtd->platform; |
| int ret = 0; |
| |
| mutex_lock_nested(&rtd->pcm_mutex, rtd->pcm_subclass); |
| |
| if (platform->driver->compr_ops && platform->driver->compr_ops->get_caps) |
| ret = platform->driver->compr_ops->get_caps(cstream, caps); |
| |
| mutex_unlock(&rtd->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_platform *platform = rtd->platform; |
| int ret = 0; |
| |
| mutex_lock_nested(&rtd->pcm_mutex, rtd->pcm_subclass); |
| |
| if (platform->driver->compr_ops && platform->driver->compr_ops->get_codec_caps) |
| ret = platform->driver->compr_ops->get_codec_caps(cstream, codec); |
| |
| mutex_unlock(&rtd->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_platform *platform = rtd->platform; |
| int ret = 0; |
| |
| mutex_lock_nested(&rtd->pcm_mutex, rtd->pcm_subclass); |
| |
| if (platform->driver->compr_ops && platform->driver->compr_ops->ack) |
| ret = platform->driver->compr_ops->ack(cstream, bytes); |
| |
| mutex_unlock(&rtd->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_platform *platform = rtd->platform; |
| |
| mutex_lock_nested(&rtd->pcm_mutex, rtd->pcm_subclass); |
| |
| if (platform->driver->compr_ops && platform->driver->compr_ops->pointer) |
| platform->driver->compr_ops->pointer(cstream, tstamp); |
| |
| mutex_unlock(&rtd->pcm_mutex); |
| return 0; |
| } |
| |
| 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_platform *platform = rtd->platform; |
| int ret = 0; |
| |
| mutex_lock_nested(&rtd->pcm_mutex, rtd->pcm_subclass); |
| |
| if (platform->driver->compr_ops && platform->driver->compr_ops->copy) |
| ret = platform->driver->compr_ops->copy(cstream, buf, count); |
| |
| mutex_unlock(&rtd->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_platform *platform = rtd->platform; |
| int ret = 0; |
| |
| if (platform->driver->compr_ops && platform->driver->compr_ops->set_metadata) |
| ret = platform->driver->compr_ops->set_metadata(cstream, metadata); |
| |
| return ret; |
| } |
| |
| 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_platform *platform = rtd->platform; |
| int ret = 0; |
| |
| if (platform->driver->compr_ops && platform->driver->compr_ops->get_metadata) |
| ret = platform->driver->compr_ops->get_metadata(cstream, metadata); |
| |
| return ret; |
| } |
| |
| /* 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 |
| }; |
| |
| /* create a new compress */ |
| int soc_new_compress(struct snd_soc_pcm_runtime *rtd, int num) |
| { |
| struct snd_soc_codec *codec = rtd->codec; |
| struct snd_soc_platform *platform = rtd->platform; |
| 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, "Multicodec not supported for compressed stream\n"); |
| return -EINVAL; |
| } |
| |
| /* check client and interface hw capabilities */ |
| snprintf(new_name, sizeof(new_name), "%s %s-%d", |
| rtd->dai_link->stream_name, codec_dai->name, num); |
| |
| 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; |
| |
| /* |
| * 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, "Invalid direction for compress P %d, C %d\n", |
| playback, capture); |
| return -EINVAL; |
| } |
| |
| if(playback) |
| direction = SND_COMPRESS_PLAYBACK; |
| else |
| direction = SND_COMPRESS_CAPTURE; |
| |
| compr = kzalloc(sizeof(*compr), GFP_KERNEL); |
| if (compr == NULL) { |
| snd_printk(KERN_ERR "Cannot allocate compr\n"); |
| return -ENOMEM; |
| } |
| |
| compr->ops = devm_kzalloc(rtd->card->dev, sizeof(soc_compr_ops), |
| GFP_KERNEL); |
| if (compr->ops == NULL) { |
| dev_err(rtd->card->dev, "Cannot allocate compressed ops\n"); |
| ret = -ENOMEM; |
| goto compr_err; |
| } |
| |
| 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, "ASoC: can't create compressed for %s\n", |
| rtd->dai_link->name); |
| goto compr_err; |
| } |
| |
| 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 |
| memcpy(compr->ops, &soc_compr_ops, sizeof(soc_compr_ops)); |
| |
| /* Add copy callback for not memory mapped DSPs */ |
| if (platform->driver->compr_ops && platform->driver->compr_ops->copy) |
| compr->ops->copy = soc_compr_copy; |
| |
| mutex_init(&compr->lock); |
| ret = snd_compress_new(rtd->card->snd_card, num, direction, compr); |
| if (ret < 0) { |
| pr_err("compress asoc: can't create compress for codec %s\n", |
| codec->component.name); |
| goto compr_err; |
| } |
| |
| /* DAPM dai link stream work */ |
| INIT_DELAYED_WORK(&rtd->delayed_work, close_delayed_work); |
| |
| rtd->compr = compr; |
| compr->private_data = rtd; |
| |
| printk(KERN_INFO "compress asoc: %s <-> %s mapping ok\n", codec_dai->name, |
| cpu_dai->name); |
| return ret; |
| |
| compr_err: |
| kfree(compr); |
| return ret; |
| } |