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ASoC: Add initial support for multiple CPU DAIs

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ASoC core supports multiple codec DAIs but supports only a CPU DAI.
To support multiple cpu DAIs, add cpu_dai and num_cpu_dai in
snd_soc_dai_link and snd_soc_pcm_runtime structures similar to
support for codec_dai. This is intended as a preparatory patch to
eventually support the unification of the Codec and CPU DAI.

Inline with multiple codec DAI approach, add support to allocate,
init, bind and probe multiple cpu_dai on init if driver specifies
that. Also add support to loop over multiple cpu_dai during
suspend and resume.

This is intended as a preparatory patch to eventually unify the CPU
and Codec DAI into DAI components.

Signed-off-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>
Signed-off-by: Bard Liao <yung-chuan.liao@linux.intel.com>
Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
Signed-off-by: Shreyas NC <shreyas.nc@intel.com>
Link: https://lore.kernel.org/r/20200225133917.21314-2-yung-chuan.liao@linux.intel.com
Signed-off-by: Mark Brown <broonie@kernel.org>
This commit is contained in:
Shreyas NC 2020-02-25 21:39:12 +08:00 committed by Mark Brown
parent f5e056e1e4
commit 76afa64374
No known key found for this signature in database
GPG Key ID: 24D68B725D5487D0
2 changed files with 106 additions and 77 deletions
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15
include/sound/soc.h
View File

@ -855,6 +855,11 @@ struct snd_soc_dai_link {
((platform) = &link->platforms[i]); \
(i)++)
#define for_each_link_cpus(link, i, cpu) \
for ((i) = 0; \
((i) < link->num_cpus) && ((cpu) = &link->cpus[i]); \
(i)++)
/*
* Sample 1 : Single CPU/Codec/Platform
*
@ -1132,6 +1137,9 @@ struct snd_soc_pcm_runtime {
struct snd_soc_dai **codec_dais;
unsigned int num_codecs;
struct snd_soc_dai **cpu_dais;
unsigned int num_cpus;
struct delayed_work delayed_work;
void (*close_delayed_work_func)(struct snd_soc_pcm_runtime *rtd);
#ifdef CONFIG_DEBUG_FS
@ -1159,6 +1167,13 @@ struct snd_soc_pcm_runtime {
#define for_each_rtd_codec_dai_rollback(rtd, i, dai) \
for (; (--(i) >= 0) && ((dai) = rtd->codec_dais[i]);)
#define for_each_rtd_cpu_dai(rtd, i, dai)\
for ((i) = 0; \
((i) < rtd->num_cpus) && ((dai) = rtd->cpu_dais[i]); \
(i)++)
#define for_each_rtd_cpu_dai_rollback(rtd, i, dai) \
for (; (--(i) >= 0) && ((dai) = rtd->cpu_dais[i]);)
void snd_soc_close_delayed_work(struct snd_soc_pcm_runtime *rtd);
/* mixer control */

168
sound/soc/soc-core.c
View File

@ -483,6 +483,14 @@ static struct snd_soc_pcm_runtime *soc_new_pcm_runtime(
if (!rtd->codec_dais)
goto free_rtd;
/*
* for rtd->cpu_dais
*/
rtd->cpu_dais = devm_kcalloc(dev, dai_link->num_cpus,
sizeof(struct snd_soc_dai *),
GFP_KERNEL);
if (!rtd->cpu_dais)
goto free_rtd;
/*
* rtd remaining settings
*/
@ -833,7 +841,7 @@ static int soc_dai_link_sanity_check(struct snd_soc_card *card,
struct snd_soc_dai_link *link)
{
int i;
struct snd_soc_dai_link_component *codec, *platform;
struct snd_soc_dai_link_component *cpu, *codec, *platform;
for_each_link_codecs(link, i, codec) {
/*
@ -882,44 +890,38 @@ static int soc_dai_link_sanity_check(struct snd_soc_card *card,
return -EPROBE_DEFER;
}
/* FIXME */
if (link->num_cpus > 1) {
dev_err(card->dev,
"ASoC: multi cpu is not yet supported %s\n",
link->name);
return -EINVAL;
}
for_each_link_cpus(link, i, cpu) {
/*
* CPU device may be specified by either name or OF node, but
* can be left unspecified, and will be matched based on DAI
* name alone..
*/
if (cpu->name && cpu->of_node) {
dev_err(card->dev,
"ASoC: Neither/both cpu name/of_node are set for %s\n",
link->name);
return -EINVAL;
}
/*
* CPU device may be specified by either name or OF node, but
* can be left unspecified, and will be matched based on DAI
* name alone..
*/
if (link->cpus->name && link->cpus->of_node) {
dev_err(card->dev,
"ASoC: Neither/both cpu name/of_node are set for %s\n",
link->name);
return -EINVAL;
}
/*
* Defer card registration if cpu dai component is not added to
* component list.
*/
if ((cpu->of_node || cpu->name) &&
!soc_find_component(cpu))
return -EPROBE_DEFER;
/*
* Defer card registration if cpu dai component is not added to
* component list.
*/
if ((link->cpus->of_node || link->cpus->name) &&
!soc_find_component(link->cpus))
return -EPROBE_DEFER;
/*
* At least one of CPU DAI name or CPU device name/node must be
* specified
*/
if (!link->cpus->dai_name &&
!(link->cpus->name || link->cpus->of_node)) {
dev_err(card->dev,
"ASoC: Neither cpu_dai_name nor cpu_name/of_node are set for %s\n",
link->name);
return -EINVAL;
/*
* At least one of CPU DAI name or CPU device name/node must be
* specified
*/
if (!cpu->dai_name &&
!(cpu->name || cpu->of_node)) {
dev_err(card->dev,
"ASoC: Neither cpu_dai_name nor cpu_name/of_node are set for %s\n",
link->name);
return -EINVAL;
}
}
return 0;
@ -962,7 +964,7 @@ int snd_soc_add_pcm_runtime(struct snd_soc_card *card,
struct snd_soc_dai_link *dai_link)
{
struct snd_soc_pcm_runtime *rtd;
struct snd_soc_dai_link_component *codec, *platform;
struct snd_soc_dai_link_component *codec, *platform, *cpu;
struct snd_soc_component *component;
int i, ret;
@ -987,14 +989,19 @@ int snd_soc_add_pcm_runtime(struct snd_soc_card *card,
if (!rtd)
return -ENOMEM;
/* FIXME: we need multi CPU support in the future */
rtd->cpu_dai = snd_soc_find_dai(dai_link->cpus);
if (!rtd->cpu_dai) {
dev_info(card->dev, "ASoC: CPU DAI %s not registered\n",
dai_link->cpus->dai_name);
goto _err_defer;
rtd->num_cpus = dai_link->num_cpus;
for_each_link_cpus(dai_link, i, cpu) {
rtd->cpu_dais[i] = snd_soc_find_dai(cpu);
if (!rtd->cpu_dais[i]) {
dev_info(card->dev, "ASoC: CPU DAI %s not registered\n",
cpu->dai_name);
goto _err_defer;
}
snd_soc_rtd_add_component(rtd, rtd->cpu_dais[i]->component);
}
snd_soc_rtd_add_component(rtd, rtd->cpu_dai->component);
/* Single cpu links expect cpu and cpu_dai in runtime data */
rtd->cpu_dai = rtd->cpu_dais[0];
/* Find CODEC from registered CODECs */
rtd->num_codecs = dai_link->num_codecs;
@ -1114,7 +1121,8 @@ static int soc_init_pcm_runtime(struct snd_soc_card *card,
dai_link->stream_name, ret);
return ret;
}
ret = soc_dai_pcm_new(&cpu_dai, 1, rtd);
ret = soc_dai_pcm_new(rtd->cpu_dais,
rtd->num_cpus, rtd);
if (ret < 0)
return ret;
ret = soc_dai_pcm_new(rtd->codec_dais,
@ -1306,6 +1314,7 @@ static void soc_remove_link_dais(struct snd_soc_card *card)
{
int i;
struct snd_soc_dai *codec_dai;
struct snd_soc_dai *cpu_dai;
struct snd_soc_pcm_runtime *rtd;
int order;
@ -1315,14 +1324,15 @@ static void soc_remove_link_dais(struct snd_soc_card *card)
for_each_rtd_codec_dai(rtd, i, codec_dai)
soc_remove_dai(codec_dai, order);
soc_remove_dai(rtd->cpu_dai, order);
for_each_rtd_cpu_dai(rtd, i, cpu_dai)
soc_remove_dai(cpu_dai, order);
}
}
}
static int soc_probe_link_dais(struct snd_soc_card *card)
{
struct snd_soc_dai *codec_dai;
struct snd_soc_dai *codec_dai, *cpu_dai;
struct snd_soc_pcm_runtime *rtd;
int i, order, ret;
@ -1333,9 +1343,12 @@ static int soc_probe_link_dais(struct snd_soc_card *card)
"ASoC: probe %s dai link %d late %d\n",
card->name, rtd->num, order);
ret = soc_probe_dai(rtd->cpu_dai, order);
if (ret)
return ret;
/* probe the CPU DAI */
for_each_rtd_cpu_dai(rtd, i, cpu_dai) {
ret = soc_probe_dai(cpu_dai, order);
if (ret)
return ret;
}
/* probe the CODEC DAI */
for_each_rtd_codec_dai(rtd, i, codec_dai) {
@ -1467,8 +1480,9 @@ static void soc_remove_aux_devices(struct snd_soc_card *card)
int snd_soc_runtime_set_dai_fmt(struct snd_soc_pcm_runtime *rtd,
unsigned int dai_fmt)
{
struct snd_soc_dai *cpu_dai = rtd->cpu_dai;
struct snd_soc_dai *cpu_dai;
struct snd_soc_dai *codec_dai;
unsigned int inv_dai_fmt;
unsigned int i;
int ret;
@ -1485,33 +1499,33 @@ int snd_soc_runtime_set_dai_fmt(struct snd_soc_pcm_runtime *rtd,
* Flip the polarity for the "CPU" end of a CODEC<->CODEC link
* the component which has non_legacy_dai_naming is Codec
*/
if (cpu_dai->component->driver->non_legacy_dai_naming) {
unsigned int inv_dai_fmt;
inv_dai_fmt = dai_fmt & ~SND_SOC_DAIFMT_MASTER_MASK;
switch (dai_fmt & SND_SOC_DAIFMT_MASTER_MASK) {
case SND_SOC_DAIFMT_CBM_CFM:
inv_dai_fmt |= SND_SOC_DAIFMT_CBS_CFS;
break;
case SND_SOC_DAIFMT_CBM_CFS:
inv_dai_fmt |= SND_SOC_DAIFMT_CBS_CFM;
break;
case SND_SOC_DAIFMT_CBS_CFM:
inv_dai_fmt |= SND_SOC_DAIFMT_CBM_CFS;
break;
case SND_SOC_DAIFMT_CBS_CFS:
inv_dai_fmt |= SND_SOC_DAIFMT_CBM_CFM;
break;
}
dai_fmt = inv_dai_fmt;
inv_dai_fmt = dai_fmt & ~SND_SOC_DAIFMT_MASTER_MASK;
switch (dai_fmt & SND_SOC_DAIFMT_MASTER_MASK) {
case SND_SOC_DAIFMT_CBM_CFM:
inv_dai_fmt |= SND_SOC_DAIFMT_CBS_CFS;
break;
case SND_SOC_DAIFMT_CBM_CFS:
inv_dai_fmt |= SND_SOC_DAIFMT_CBS_CFM;
break;
case SND_SOC_DAIFMT_CBS_CFM:
inv_dai_fmt |= SND_SOC_DAIFMT_CBM_CFS;
break;
case SND_SOC_DAIFMT_CBS_CFS:
inv_dai_fmt |= SND_SOC_DAIFMT_CBM_CFM;
break;
}
for_each_rtd_cpu_dai(rtd, i, cpu_dai) {
unsigned int fmt = dai_fmt;
ret = snd_soc_dai_set_fmt(cpu_dai, dai_fmt);
if (ret != 0 && ret != -ENOTSUPP) {
dev_warn(cpu_dai->dev,
"ASoC: Failed to set DAI format: %d\n", ret);
return ret;
if (cpu_dai->component->driver->non_legacy_dai_naming)
fmt = inv_dai_fmt;
ret = snd_soc_dai_set_fmt(cpu_dai, fmt);
if (ret != 0 && ret != -ENOTSUPP) {
dev_warn(cpu_dai->dev,
"ASoC: Failed to set DAI format: %d\n", ret);
return ret;
}
}
return 0;