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-rw-r--r--sound/soc/soc-compress.c700
1 files changed, 700 insertions, 0 deletions
diff --git a/sound/soc/soc-compress.c b/sound/soc/soc-compress.c
new file mode 100644
index 00000000000..10f7f1da2ac
--- /dev/null
+++ b/sound/soc/soc-compress.c
@@ -0,0 +1,700 @@
+/*
+ * 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->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->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;
+
+ if (dpcm_path_get(fe, stream, &list) <= 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;
+
+ if (stream == SNDRV_PCM_STREAM_PLAYBACK)
+ dpcm_dapm_stream_event(fe, stream, SND_SOC_DAPM_STREAM_STOP);
+ else
+ 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;
+
+ if (stream == SNDRV_PCM_STREAM_PLAYBACK)
+ dpcm_dapm_stream_event(fe, stream, SND_SOC_DAPM_STREAM_START);
+ else
+ 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;
+
+ /* 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)
+ direction = SND_COMPRESS_PLAYBACK;
+ else if (codec_dai->driver->capture.channels_min)
+ direction = SND_COMPRESS_CAPTURE;
+ else
+ return -EINVAL;
+
+ 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,
+ 1, 0, &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;
+ be_pcm->streams[SNDRV_PCM_STREAM_PLAYBACK].substream->private_data = rtd;
+ 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->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;
+}
generated by cgit v1.2.3-70-g09d2 (git 2.46.0) at 2025-11-04 01:43:14 +0000