Merge tag 'asoc-v3.14-3' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/sound into for-linus

ASoC: Last updates for the merge window

A couple more fixes plus some extensions to DPCM for use with compressed
audio from Liam which arrived just after my previous pull request.

6 files changed, 347 insertions, 26 deletions

diff --git a/include/sound/soc-dpcm.h b/include/sound/soc-dpcm.h
index 047d657c331c..2883a7a6f9f3 100644
--- a/include/sound/soc-dpcm.h
+++ b/include/sound/soc-dpcm.h
@@ -11,6 +11,7 @@
 #ifndef __LINUX_SND_SOC_DPCM_H
 #define __LINUX_SND_SOC_DPCM_H
 
+#include <linux/slab.h>
 #include <linux/list.h>
 #include <sound/pcm.h>
 
@@ -135,4 +136,25 @@ int soc_dpcm_be_digital_mute(struct snd_soc_pcm_runtime *fe, int mute);
 int soc_dpcm_debugfs_add(struct snd_soc_pcm_runtime *rtd);
 int soc_dpcm_runtime_update(struct snd_soc_card *);
 
+int dpcm_path_get(struct snd_soc_pcm_runtime *fe,
+        int stream, struct snd_soc_dapm_widget_list **list_);
+int dpcm_process_paths(struct snd_soc_pcm_runtime *fe,
+        int stream, struct snd_soc_dapm_widget_list **list, int new);
+int dpcm_be_dai_startup(struct snd_soc_pcm_runtime *fe, int stream);
+int dpcm_be_dai_shutdown(struct snd_soc_pcm_runtime *fe, int stream);
+void dpcm_be_disconnect(struct snd_soc_pcm_runtime *fe, int stream);
+void dpcm_clear_pending_state(struct snd_soc_pcm_runtime *fe, int stream);
+int dpcm_be_dai_hw_free(struct snd_soc_pcm_runtime *fe, int stream);
+int dpcm_be_dai_hw_params(struct snd_soc_pcm_runtime *fe, int tream);
+int dpcm_be_dai_trigger(struct snd_soc_pcm_runtime *fe, int stream, int cmd);
+int dpcm_be_dai_prepare(struct snd_soc_pcm_runtime *fe, int stream);
+int dpcm_dapm_stream_event(struct snd_soc_pcm_runtime *fe, int dir,
+        int event);
+
+static inline void dpcm_path_put(struct snd_soc_dapm_widget_list **list)
+{
+        kfree(*list);
+}
+
+
 #endif
diff --git a/include/sound/soc.h b/include/sound/soc.h
index 03ce45bf8ade..9a001472b96a 100644
--- a/include/sound/soc.h
+++ b/include/sound/soc.h
@@ -1042,6 +1042,7 @@ struct snd_soc_pcm_runtime {
 
         /* Dynamic PCM BE runtime data */
         struct snd_soc_dpcm_runtime dpcm[2];
+        int fe_compr;
 
         long pmdown_time;
         unsigned char pop_wait:1;
diff --git a/sound/soc/soc-compress.c b/sound/soc/soc-compress.c
index 53c9ecdd119f..5e9690c85d8f 100644
--- a/sound/soc/soc-compress.c
+++ b/sound/soc/soc-compress.c
@@ -24,6 +24,7 @@
 #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)
 {
@@ -75,6 +76,98 @@ out:
         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_dai *cpu_dai = fe->cpu_dai;
+        struct snd_soc_dai *codec_dai = fe->codec_dai;
+        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;
+
+        if (cstream->direction == SND_COMPRESS_PLAYBACK) {
+                cpu_dai->playback_active++;
+                codec_dai->playback_active++;
+        } else {
+                cpu_dai->capture_active++;
+                codec_dai->capture_active++;
+        }
+
+        cpu_dai->active++;
+        codec_dai->active++;
+        fe->codec->active++;
+
+        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
@@ -164,6 +257,65 @@ static int soc_compr_free(struct snd_compr_stream *cstream)
         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_dai *cpu_dai = fe->cpu_dai;
+        struct snd_soc_dai *codec_dai = fe->codec_dai;
+        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;
+                cpu_dai->playback_active--;
+                codec_dai->playback_active--;
+        } else {
+                stream = SNDRV_PCM_STREAM_CAPTURE;
+                cpu_dai->capture_active--;