[alsa-devel] [RFC 4/x v2] ASoC: snd_soc_component_driver has snd_pcm_ops
Kuninori Morimoto
kuninori.morimoto.gx at renesas.com
Mon Jun 26 10:53:22 CEST 2017
snd_soc_platform_driver has snd_pcm_ops,
and it will be replaced into snd_soc_component_driver in the future.
To prepare it, component driver has it.
After this patch, rtd->platfrom is no longer mandatory
Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx at renesas.com>
---
include/sound/soc.h | 4 +-
sound/soc/soc-core.c | 43 ++++++-
sound/soc/soc-pcm.c | 314 ++++++++++++++++++++++++++++++++++++++++++++++++---
3 files changed, 337 insertions(+), 24 deletions(-)
diff --git a/include/sound/soc.h b/include/sound/soc.h
index ed613a7..f26897c 100644
--- a/include/sound/soc.h
+++ b/include/sound/soc.h
@@ -814,6 +814,8 @@ struct snd_soc_component_driver {
int subseq);
int (*stream_event)(struct snd_soc_component *, int event);
+ const struct snd_pcm_ops *ops;
+
/* probe ordering - for components with runtime dependencies */
int probe_order;
int remove_order;
@@ -1247,7 +1249,7 @@ struct snd_soc_pcm_runtime {
struct snd_pcm *pcm;
struct snd_compr *compr;
struct snd_soc_codec *codec;
- struct snd_soc_platform *platform;
+ struct snd_soc_platform *platform; /* will be removed */
struct snd_soc_dai *codec_dai;
struct snd_soc_dai *cpu_dai;
diff --git a/sound/soc/soc-core.c b/sound/soc/soc-core.c
index 287dec3..cdde8f7 100644
--- a/sound/soc/soc-core.c
+++ b/sound/soc/soc-core.c
@@ -1079,6 +1079,7 @@ static int soc_bind_dai_link(struct snd_soc_card *card,
struct snd_soc_dai_link_component cpu_dai_component;
struct snd_soc_dai **codec_dais;
struct snd_soc_platform *platform;
+ struct snd_soc_component *component;
struct device_node *platform_of_node;
const char *platform_name;
int i;
@@ -1128,6 +1129,22 @@ static int soc_bind_dai_link(struct snd_soc_card *card,
platform_name = "snd-soc-dummy";
/* find one from the set of registered platforms */
+ list_for_each_entry(component, &component_list, list) {
+ platform_of_node = component->dev->of_node;
+ if (!platform_of_node && component->dev->parent->of_node)
+ platform_of_node = component->dev->parent->of_node;
+
+ if (dai_link->platform_of_node) {
+ if (platform_of_node != dai_link->platform_of_node)
+ continue;
+ } else {
+ if (strcmp(component->name, platform_name))
+ continue;
+ }
+
+ snd_soc_rtdcom_add(rtd, component);
+ }
+
list_for_each_entry(platform, &platform_list, list) {
platform_of_node = platform->dev->of_node;
if (!platform_of_node && platform->dev->parent->of_node)
@@ -1143,11 +1160,6 @@ static int soc_bind_dai_link(struct snd_soc_card *card,
rtd->platform = platform;
}
- if (!rtd->platform) {
- dev_err(card->dev, "ASoC: platform %s not registered\n",
- dai_link->platform_name);
- goto _err_defer;
- }
soc_add_pcm_runtime(card, rtd);
return 0;
@@ -1215,12 +1227,20 @@ static void soc_remove_link_components(struct snd_soc_card *card,
struct snd_soc_dai *cpu_dai = rtd->cpu_dai;
struct snd_soc_platform *platform = rtd->platform;
struct snd_soc_component *component;
+ struct snd_soc_rtdcom_list *rtdcom;
int i;
/* remove the platform */
if (platform && platform->component.driver->remove_order == order)
soc_remove_component(&platform->component);
+ /* remove the component */
+ for_each_rtdcom(rtd, rtdcom) {
+ component = rtdcom->component;
+ if (component->driver->remove_order == order)
+ soc_remove_component(component);
+ }
+
/* remove the CODEC-side CODEC */
for (i = 0; i < rtd->num_codecs; i++) {
component = rtd->codec_dais[i]->component;
@@ -1586,6 +1606,7 @@ static int soc_probe_link_components(struct snd_soc_card *card,
{
struct snd_soc_platform *platform = rtd->platform;
struct snd_soc_component *component;
+ struct snd_soc_rtdcom_list *rtdcom;
int i, ret;
/* probe the CPU-side component, if it is a CODEC */
@@ -1607,12 +1628,22 @@ static int soc_probe_link_components(struct snd_soc_card *card,
}
/* probe the platform */
- if (platform->component.driver->probe_order == order) {
+ if (platform && platform->component.driver->probe_order == order) {
ret = soc_probe_component(card, &platform->component);
if (ret < 0)
return ret;
}
+ /* probe the component */
+ for_each_rtdcom(rtd, rtdcom) {
+ component = rtdcom->component;
+ if (component->driver->probe_order == order) {
+ ret = soc_probe_component(card, component);
+ if (ret < 0)
+ return ret;
+ }
+ }
+
return 0;
}
diff --git a/sound/soc/soc-pcm.c b/sound/soc/soc-pcm.c
index efc5831..b08ef16 100644
--- a/sound/soc/soc-pcm.c
+++ b/sound/soc/soc-pcm.c
@@ -450,10 +450,12 @@ static int soc_pcm_open(struct snd_pcm_substream *substream)
struct snd_soc_pcm_runtime *rtd = substream->private_data;
struct snd_pcm_runtime *runtime = substream->runtime;
struct snd_soc_platform *platform = rtd->platform;
+ struct snd_soc_component *component;
+ struct snd_soc_rtdcom_list *rtdcom;
struct snd_soc_dai *cpu_dai = rtd->cpu_dai;
struct snd_soc_dai *codec_dai;
const char *codec_dai_name = "multicodec";
- int i, ret = 0;
+ int i, ret = 0, __ret;
pinctrl_pm_select_default_state(cpu_dai->dev);
for (i = 0; i < rtd->num_codecs; i++)
@@ -461,7 +463,11 @@ static int soc_pcm_open(struct snd_pcm_substream *substream)
pm_runtime_get_sync(cpu_dai->dev);
for (i = 0; i < rtd->num_codecs; i++)
pm_runtime_get_sync(rtd->codec_dais[i]->dev);
- pm_runtime_get_sync(platform->dev);
+ for_each_rtdcom(rtd, rtdcom) {
+ component = rtdcom->component;
+
+ pm_runtime_get_sync(component->dev);
+ }
mutex_lock_nested(&rtd->pcm_mutex, rtd->pcm_subclass);
@@ -475,7 +481,7 @@ static int soc_pcm_open(struct snd_pcm_substream *substream)
}
}
- if (platform->driver->ops && platform->driver->ops->open) {
+ if (platform && platform->driver->ops && platform->driver->ops->open) {
ret = platform->driver->ops->open(substream);
if (ret < 0) {
dev_err(platform->dev, "ASoC: can't open platform"
@@ -484,6 +490,25 @@ static int soc_pcm_open(struct snd_pcm_substream *substream)
}
}
+ ret = 0;
+ for_each_rtdcom(rtd, rtdcom) {
+ component = rtdcom->component;
+
+ if (!component->driver->ops ||
+ !component->driver->ops->open)
+ continue;
+
+ __ret = component->driver->ops->open(substream);
+ if (__ret < 0) {
+ dev_err(component->dev,
+ "ASoC: can't open platform %s: %d\n",
+ component->name, ret);
+ ret = __ret;
+ }
+ }
+ if (ret < 0)
+ goto component_err;
+
for (i = 0; i < rtd->num_codecs; i++) {
codec_dai = rtd->codec_dais[i];
if (codec_dai->driver->ops && codec_dai->driver->ops->startup) {
@@ -590,7 +615,16 @@ static int soc_pcm_open(struct snd_pcm_substream *substream)
codec_dai->driver->ops->shutdown(substream, codec_dai);
}
- if (platform->driver->ops && platform->driver->ops->close)
+component_err:
+ for_each_rtdcom(rtd, rtdcom) {
+ component = rtdcom->component;
+
+ if (component->driver->ops &&
+ component->driver->ops->close)
+ component->driver->ops->close(substream);
+ }
+
+ if (platform && platform->driver->ops && platform->driver->ops->close)
platform->driver->ops->close(substream);
platform_err:
@@ -599,8 +633,13 @@ static int soc_pcm_open(struct snd_pcm_substream *substream)
out:
mutex_unlock(&rtd->pcm_mutex);
- pm_runtime_mark_last_busy(platform->dev);
- pm_runtime_put_autosuspend(platform->dev);
+ for_each_rtdcom(rtd, rtdcom) {
+ component = rtdcom->component;
+
+ pm_runtime_mark_last_busy(component->dev);
+ pm_runtime_put_autosuspend(component->dev);
+ }
+
for (i = 0; i < rtd->num_codecs; i++) {
pm_runtime_mark_last_busy(rtd->codec_dais[i]->dev);
pm_runtime_put_autosuspend(rtd->codec_dais[i]->dev);
@@ -655,6 +694,8 @@ static int soc_pcm_close(struct snd_pcm_substream *substream)
{
struct snd_soc_pcm_runtime *rtd = substream->private_data;
struct snd_soc_platform *platform = rtd->platform;
+ struct snd_soc_component *component;
+ struct snd_soc_rtdcom_list *rtdcom;
struct snd_soc_dai *cpu_dai = rtd->cpu_dai;
struct snd_soc_dai *codec_dai;
int i;
@@ -687,9 +728,17 @@ static int soc_pcm_close(struct snd_pcm_substream *substream)
if (rtd->dai_link->ops && rtd->dai_link->ops->shutdown)
rtd->dai_link->ops->shutdown(substream);
- if (platform->driver->ops && platform->driver->ops->close)
+ if (platform && platform->driver->ops && platform->driver->ops->close)
platform->driver->ops->close(substream);
+ for_each_rtdcom(rtd, rtdcom) {
+ component = rtdcom->component;
+
+ if (component->driver->ops &&
+ component->driver->ops->close)
+ component->driver->ops->close(substream);
+ }
+
if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) {
if (snd_soc_runtime_ignore_pmdown_time(rtd)) {
/* powered down playback stream now */
@@ -711,8 +760,12 @@ static int soc_pcm_close(struct snd_pcm_substream *substream)
mutex_unlock(&rtd->pcm_mutex);
- pm_runtime_mark_last_busy(platform->dev);
- pm_runtime_put_autosuspend(platform->dev);
+ for_each_rtdcom(rtd, rtdcom) {
+ component = rtdcom->component;
+
+ pm_runtime_mark_last_busy(component->dev);
+ pm_runtime_put_autosuspend(component->dev);
+ }
for (i = 0; i < rtd->num_codecs; i++) {
pm_runtime_mark_last_busy(rtd->codec_dais[i]->dev);
@@ -741,6 +794,8 @@ static int soc_pcm_prepare(struct snd_pcm_substream *substream)
{
struct snd_soc_pcm_runtime *rtd = substream->private_data;
struct snd_soc_platform *platform = rtd->platform;
+ struct snd_soc_component *component;
+ struct snd_soc_rtdcom_list *rtdcom;
struct snd_soc_dai *cpu_dai = rtd->cpu_dai;
struct snd_soc_dai *codec_dai;
int i, ret = 0;
@@ -756,7 +811,7 @@ static int soc_pcm_prepare(struct snd_pcm_substream *substream)
}
}
- if (platform->driver->ops && platform->driver->ops->prepare) {
+ if (platform && platform->driver->ops && platform->driver->ops->prepare) {
ret = platform->driver->ops->prepare(substream);
if (ret < 0) {
dev_err(platform->dev, "ASoC: platform prepare error:"
@@ -765,6 +820,21 @@ static int soc_pcm_prepare(struct snd_pcm_substream *substream)
}
}
+ for_each_rtdcom(rtd, rtdcom) {
+ component = rtdcom->component;
+
+ if (!component->driver->ops ||
+ !component->driver->ops->prepare)
+ continue;
+
+ ret = component->driver->ops->prepare(substream);
+ if (ret < 0) {
+ dev_err(component->dev, "ASoC: platform prepare error:"
+ " %d\n", ret);
+ goto out;
+ }
+ }
+
for (i = 0; i < rtd->num_codecs; i++) {
codec_dai = rtd->codec_dais[i];
if (codec_dai->driver->ops && codec_dai->driver->ops->prepare) {
@@ -847,8 +917,10 @@ static int soc_pcm_hw_params(struct snd_pcm_substream *substream,
{
struct snd_soc_pcm_runtime *rtd = substream->private_data;
struct snd_soc_platform *platform = rtd->platform;
+ struct snd_soc_component *component;
+ struct snd_soc_rtdcom_list *rtdcom;
struct snd_soc_dai *cpu_dai = rtd->cpu_dai;
- int i, ret = 0;
+ int i, ret = 0, __ret;
mutex_lock_nested(&rtd->pcm_mutex, rtd->pcm_subclass);
@@ -911,7 +983,7 @@ static int soc_pcm_hw_params(struct snd_pcm_substream *substream,
if (ret < 0)
goto interface_err;
- if (platform->driver->ops && platform->driver->ops->hw_params) {
+ if (platform && platform->driver->ops && platform->driver->ops->hw_params) {
ret = platform->driver->ops->hw_params(substream, params);
if (ret < 0) {
dev_err(platform->dev, "ASoC: %s hw params failed: %d\n",
@@ -920,6 +992,25 @@ static int soc_pcm_hw_params(struct snd_pcm_substream *substream,
}
}
+ ret = 0;
+ for_each_rtdcom(rtd, rtdcom) {
+ component = rtdcom->component;
+
+ if (!component->driver->ops ||
+ !component->driver->ops->hw_params)
+ continue;
+
+ __ret = component->driver->ops->hw_params(substream, params);
+ if (__ret < 0) {
+ dev_err(component->dev,
+ "ASoC: %s hw params failed: %d\n",
+ component->name, ret);
+ ret = __ret;
+ }
+ }
+ if (ret < 0)
+ goto component_err;
+
/* store the parameters for each DAIs */
cpu_dai->rate = params_rate(params);
cpu_dai->channels = params_channels(params);
@@ -930,6 +1021,18 @@ static int soc_pcm_hw_params(struct snd_pcm_substream *substream,
mutex_unlock(&rtd->pcm_mutex);
return ret;
+component_err:
+ for_each_rtdcom(rtd, rtdcom) {
+ component = rtdcom->component;
+
+ if (component->driver->ops &&
+ component->driver->ops->hw_free)
+ component->driver->ops->hw_free(substream);
+ }
+
+ if (platform && platform->driver->ops && platform->driver->ops->hw_free)
+ platform->driver->ops->hw_free(substream);
+
platform_err:
if (cpu_dai->driver->ops && cpu_dai->driver->ops->hw_free)
cpu_dai->driver->ops->hw_free(substream, cpu_dai);
@@ -959,6 +1062,8 @@ static int soc_pcm_hw_free(struct snd_pcm_substream *substream)
{
struct snd_soc_pcm_runtime *rtd = substream->private_data;
struct snd_soc_platform *platform = rtd->platform;
+ struct snd_soc_component *component;
+ struct snd_soc_rtdcom_list *rtdcom;
struct snd_soc_dai *cpu_dai = rtd->cpu_dai;
struct snd_soc_dai *codec_dai;
bool playback = substream->stream == SNDRV_PCM_STREAM_PLAYBACK;
@@ -995,9 +1100,18 @@ static int soc_pcm_hw_free(struct snd_pcm_substream *substream)
rtd->dai_link->ops->hw_free(substream);
/* free any DMA resources */
- if (platform->driver->ops && platform->driver->ops->hw_free)
+ if (platform && platform->driver->ops && platform->driver->ops->hw_free)
platform->driver->ops->hw_free(substream);
+ /* free any component resources */
+ for_each_rtdcom(rtd, rtdcom) {
+ component = rtdcom->component;
+
+ if (component->driver->ops &&
+ component->driver->ops->hw_free)
+ component->driver->ops->hw_free(substream);
+ }
+
/* now free hw params for the DAIs */
for (i = 0; i < rtd->num_codecs; i++) {
codec_dai = rtd->codec_dais[i];
@@ -1016,6 +1130,8 @@ static int soc_pcm_trigger(struct snd_pcm_substream *substream, int cmd)
{
struct snd_soc_pcm_runtime *rtd = substream->private_data;
struct snd_soc_platform *platform = rtd->platform;
+ struct snd_soc_component *component;
+ struct snd_soc_rtdcom_list *rtdcom;
struct snd_soc_dai *cpu_dai = rtd->cpu_dai;
struct snd_soc_dai *codec_dai;
int i, ret;
@@ -1030,12 +1146,23 @@ static int soc_pcm_trigger(struct snd_pcm_substream *substream, int cmd)
}
}
- if (platform->driver->ops && platform->driver->ops->trigger) {
+ if (platform && platform->driver->ops && platform->driver->ops->trigger) {
ret = platform->driver->ops->trigger(substream, cmd);
if (ret < 0)
return ret;
}
+ for_each_rtdcom(rtd, rtdcom) {
+ component = rtdcom->component;
+
+ if (component->driver->ops &&
+ component->driver->ops->trigger) {
+ ret = component->driver->ops->trigger(substream, cmd);
+ if (ret < 0)
+ return ret;
+ }
+ }
+
if (cpu_dai->driver->ops && cpu_dai->driver->ops->trigger) {
ret = cpu_dai->driver->ops->trigger(substream, cmd, cpu_dai);
if (ret < 0)
@@ -1086,6 +1213,8 @@ static snd_pcm_uframes_t soc_pcm_pointer(struct snd_pcm_substream *substream)
{
struct snd_soc_pcm_runtime *rtd = substream->private_data;
struct snd_soc_platform *platform = rtd->platform;
+ struct snd_soc_component *component;
+ struct snd_soc_rtdcom_list *rtdcom;
struct snd_soc_dai *cpu_dai = rtd->cpu_dai;
struct snd_soc_dai *codec_dai;
struct snd_pcm_runtime *runtime = substream->runtime;
@@ -1094,9 +1223,19 @@ static snd_pcm_uframes_t soc_pcm_pointer(struct snd_pcm_substream *substream)
snd_pcm_sframes_t codec_delay = 0;
int i;
- if (platform->driver->ops && platform->driver->ops->pointer)
+ if (platform && platform->driver->ops && platform->driver->ops->pointer)
offset = platform->driver->ops->pointer(substream);
+ for_each_rtdcom(rtd, rtdcom) {
+ component = rtdcom->component;
+
+ if (component->driver->ops &&
+ component->driver->ops->pointer) {
+ offset = component->driver->ops->pointer(substream);
+ break;
+ }
+ }
+
if (cpu_dai->driver->ops && cpu_dai->driver->ops->delay)
delay += cpu_dai->driver->ops->delay(substream, cpu_dai);
@@ -2281,9 +2420,20 @@ static int soc_pcm_ioctl(struct snd_pcm_substream *substream,
{
struct snd_soc_pcm_runtime *rtd = substream->private_data;
struct snd_soc_platform *platform = rtd->platform;
+ struct snd_soc_component *component;
+ struct snd_soc_rtdcom_list *rtdcom;
- if (platform->driver->ops && platform->driver->ops->ioctl)
+ if (platform && platform->driver->ops && platform->driver->ops->ioctl)
return platform->driver->ops->ioctl(substream, cmd, arg);
+
+ for_each_rtdcom(rtd, rtdcom) {
+ component = rtdcom->component;
+
+ if (component->driver->ops &&
+ component->driver->ops->ioctl)
+ return component->driver->ops->ioctl(substream, cmd, arg);
+ }
+
return snd_pcm_lib_ioctl(substream, cmd, arg);
}
@@ -2640,6 +2790,116 @@ static void soc_pcm_free(struct snd_pcm *pcm)
}
}
+static int soc_rtdcom_ack(struct snd_pcm_substream *substream)
+{
+ struct snd_soc_pcm_runtime *rtd = substream->private_data;
+ struct snd_soc_rtdcom_list *rtdcom;
+ struct snd_soc_component *component;
+
+ for_each_rtdcom(rtd, rtdcom) {
+ component = rtdcom->component;
+
+ if (!component->driver->ops ||
+ !component->driver->ops->ack)
+ continue;
+
+ /* FIXME. it returns 1st ask now */
+ return component->driver->ops->ack(substream);
+ }
+
+ return -EINVAL;
+}
+
+static int soc_rtdcom_copy(struct snd_pcm_substream *substream, int channel,
+ snd_pcm_uframes_t pos,
+ void __user *buf, snd_pcm_uframes_t count)
+{
+ struct snd_soc_pcm_runtime *rtd = substream->private_data;
+ struct snd_soc_rtdcom_list *rtdcom;
+ struct snd_soc_component *component;
+
+ for_each_rtdcom(rtd, rtdcom) {
+ component = rtdcom->component;
+
+ if (!component->driver->ops ||
+ !component->driver->ops->copy)
+ continue;
+
+ /* FIXME. it returns 1st copy now */
+ return component->driver->ops->copy(substream, channel,
+ pos, buf, count);
+ }
+
+ return -EINVAL;
+}
+
+static int soc_rtdcom_silence(struct snd_pcm_substream *substream, int channel,
+ snd_pcm_uframes_t pos, snd_pcm_uframes_t count)
+{
+ struct snd_soc_pcm_runtime *rtd = substream->private_data;
+ struct snd_soc_rtdcom_list *rtdcom;
+ struct snd_soc_component *component;
+
+ for_each_rtdcom(rtd, rtdcom) {
+ component = rtdcom->component;
+
+ if (!component->driver->ops ||
+ !component->driver->ops->silence)
+ continue;
+
+ /* FIXME. it returns 1st silence now */
+ return component->driver->ops->silence(substream, channel,
+ pos, count);
+ }
+
+ return -EINVAL;
+}
+
+static struct page* soc_rtdcom_page(struct snd_pcm_substream *substream,
+ unsigned long offset)
+{
+ struct snd_soc_pcm_runtime *rtd = substream->private_data;
+ struct snd_soc_rtdcom_list *rtdcom;
+ struct snd_soc_component *component;
+ struct page *page;
+
+ for_each_rtdcom(rtd, rtdcom) {
+ component = rtdcom->component;
+
+ if (!component->driver->ops ||
+ !component->driver->ops->page)
+ continue;
+
+ /* FIXME. it returns 1st page now */
+ page = component->driver->ops->page(substream, offset);
+ if (page)
+ return page;
+ }
+
+ return NULL;
+}
+
+static int soc_rtdcom_mmap(struct snd_pcm_substream *substream,
+ struct vm_area_struct *vma)
+{
+ struct snd_soc_pcm_runtime *rtd = substream->private_data;
+ struct snd_soc_rtdcom_list *rtdcom;
+ struct snd_soc_component *component;
+
+ for_each_rtdcom(rtd, rtdcom) {
+ component = rtdcom->component;
+
+ if (!component->driver->ops ||
+ !component->driver->ops->mmap)
+ continue;
+
+ /* FIXME. it returns 1st mmap now */
+ return component->driver->ops->mmap(substream, vma);
+ }
+
+ return -EINVAL;
+}
+
/* create a new pcm */
int soc_new_pcm(struct snd_soc_pcm_runtime *rtd, int num)
{
@@ -2647,6 +2907,7 @@ int soc_new_pcm(struct snd_soc_pcm_runtime *rtd, int num)
struct snd_soc_dai *codec_dai;
struct snd_soc_dai *cpu_dai = rtd->cpu_dai;
struct snd_soc_component *component;
+ struct snd_soc_rtdcom_list *rtdcom;
struct snd_pcm *pcm;
char new_name[64];
int ret = 0, playback = 0, capture = 0;
@@ -2741,7 +3002,26 @@ int soc_new_pcm(struct snd_soc_pcm_runtime *rtd, int num)
rtd->ops.ioctl = soc_pcm_ioctl;
}
- if (platform->driver->ops) {
+ for_each_rtdcom(rtd, rtdcom) {
+ const struct snd_pcm_ops *ops = rtdcom->component->driver->ops;
+
+ if (!ops)
+ continue;
+
+ if (ops->ack)
+ rtd->ops.ack = soc_rtdcom_ack;
+ if (ops->copy)
+ rtd->ops.copy = soc_rtdcom_copy;
+ if (ops->silence)
+ rtd->ops.silence = soc_rtdcom_silence;
+ if (ops->page)
+ rtd->ops.page = soc_rtdcom_page;
+ if (ops->mmap)
+ rtd->ops.mmap = soc_rtdcom_mmap;
+ }
+
+ /* overwrite */
+ if (platform && platform->driver->ops) {
rtd->ops.ack = platform->driver->ops->ack;
rtd->ops.copy = platform->driver->ops->copy;
rtd->ops.silence = platform->driver->ops->silence;
--
1.9.1
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