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asoc: qdsp6v2: latency mode support for transcode loopback

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Add metadata to configure latency mode for DSP transcode
loopback to set legacy or low latency path. Userspace API
introduced to configure the same.

Change-Id: I914c68a9e9d8647530b72c42548e571b7508c423
Signed-off-by: Siddartha Shaik <sshaik@codeaurora.org>
Signed-off-by: Surendar Karka <skarka@codeaurora.org>
This commit is contained in:
Surendar Karka 2018-08-20 18:06:16 +05:30 committed by Trinath Thammishetty
parent bcfd6862e4
commit b9caa7f426
1 changed files with 52 additions and 3 deletions
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55
asoc/msm-transcode-loopback-q6-v2.c
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@ -34,6 +34,7 @@
#include <dsp/msm_audio_ion.h>
#include <dsp/apr_audio-v2.h>
#include <dsp/q6asm-v2.h>
#include <dsp/q6audio-v2.h>
#include "msm-pcm-routing-v2.h"
#include "msm-qti-pp-config.h"
@ -52,6 +53,7 @@ static DEFINE_MUTEX(transcode_loopback_session_lock);
struct trans_loopback_pdata {
struct snd_compr_stream *cstream[MSM_FRONTEND_DAI_MAX];
uint32_t master_gain;
int perf_mode;
};
struct loopback_stream {
@ -344,6 +346,8 @@ static int msm_transcode_loopback_set_params(struct snd_compr_stream *cstream,
struct msm_transcode_loopback *trans = runtime->private_data;
struct snd_soc_pcm_runtime *soc_pcm_rx;
struct snd_soc_pcm_runtime *soc_pcm_tx;
struct snd_soc_pcm_runtime *rtd;
struct trans_loopback_pdata *pdata;
uint32_t bit_width = 16;
int ret = 0;
@ -354,6 +358,9 @@ static int msm_transcode_loopback_set_params(struct snd_compr_stream *cstream,
mutex_lock(&trans->lock);
rtd = snd_pcm_substream_chip(cstream);
pdata = snd_soc_platform_get_drvdata(rtd->platform);
if (cstream->direction == SND_COMPRESS_PLAYBACK) {
if (codec_param->codec.id == SND_AUDIOCODEC_PCM) {
trans->sink.codec_format =
@ -435,7 +442,7 @@ static int msm_transcode_loopback_set_params(struct snd_compr_stream *cstream,
pr_debug("%s: ASM client allocated, callback %pK\n", __func__,
loopback_event_handler);
trans->session_id = trans->audio_client->session;
trans->audio_client->perf_mode = false;
trans->audio_client->perf_mode = pdata->perf_mode;
ret = q6asm_open_transcode_loopback(trans->audio_client,
bit_width,
trans->source.codec_format,
@ -454,7 +461,7 @@ static int msm_transcode_loopback_set_params(struct snd_compr_stream *cstream,
if (trans->source.codec_format != FORMAT_LINEAR_PCM)
msm_pcm_routing_reg_phy_compr_stream(
soc_pcm_tx->dai_link->id,
trans->audio_client->perf_mode,
LEGACY_PCM_MODE,
trans->session_id,
SNDRV_PCM_STREAM_CAPTURE,
COMPRESSED_PASSTHROUGH_GEN);
@ -467,7 +474,7 @@ static int msm_transcode_loopback_set_params(struct snd_compr_stream *cstream,
/* Opening Rx ADM in LOW_LATENCY mode by default */
msm_pcm_routing_reg_phy_stream(
soc_pcm_rx->dai_link->id,
true,
trans->audio_client->perf_mode,
trans->session_id,
SNDRV_PCM_STREAM_PLAYBACK);
pr_debug("%s: Successfully opened ADM sessions\n", __func__);
@ -500,6 +507,46 @@ static int msm_transcode_loopback_get_caps(struct snd_compr_stream *cstream,
return 0;
}
static int msm_transcode_loopback_set_metadata(struct snd_compr_stream *cstream,
struct snd_compr_metadata *metadata)
{
struct snd_soc_pcm_runtime *rtd;
struct trans_loopback_pdata *pdata;
if (!metadata || !cstream) {
pr_err("%s: Invalid arguments\n", __func__);
return -EINVAL;
}
rtd = snd_pcm_substream_chip(cstream);
pdata = snd_soc_platform_get_drvdata(rtd->platform);
switch (metadata->key) {
case SNDRV_COMPRESS_LATENCY_MODE:
{
switch (metadata->value[0]) {
case SNDRV_COMPRESS_LEGACY_LATENCY_MODE:
pdata->perf_mode = LEGACY_PCM_MODE;
break;
case SNDRV_COMPRESS_LOW_LATENCY_MODE:
pdata->perf_mode = LOW_LATENCY_PCM_MODE;
break;
default:
pr_debug("%s: Unsupported latency mode %d, default to Legacy\n",
__func__, metadata->value[0]);
pdata->perf_mode = LEGACY_PCM_MODE;
break;
}
}
break;
default:
pr_debug("%s: Unsupported metadata %d\n",
__func__, metadata->key);
break;
}
return 0;
}
static int msm_transcode_stream_cmd_put(struct snd_kcontrol *kcontrol,
struct snd_ctl_elem_value *ucontrol)
{
@ -1138,6 +1185,7 @@ static struct snd_compr_ops msm_transcode_loopback_ops = {
.trigger = msm_transcode_loopback_trigger,
.set_params = msm_transcode_loopback_set_params,
.get_caps = msm_transcode_loopback_get_caps,
.set_metadata = msm_transcode_loopback_set_metadata,
};
@ -1152,6 +1200,7 @@ static int msm_transcode_loopback_probe(struct snd_soc_platform *platform)
if (!pdata)
return -ENOMEM;
pdata->perf_mode = LOW_LATENCY_PCM_MODE;
snd_soc_platform_set_drvdata(platform, pdata);
return 0;
}