korg/linux
0
0
Fork 0
mirror of https://mirrors.bfsu.edu.cn/git/linux.git synced 2024-11-15 08:14:15 +08:00
Code Issues Packages Projects Releases Wiki Activity

ASoC: rt712-sdca-dmic: enable pm_runtime in probe, keep status as 'suspended'

Browse Source 
This patch suggests enabling pm_runtime during the probe, but marking the
device as 'active' only after it is enumerated. That will force a
dependency between the card and the codec, pm_runtime_get_sync() will
have to wait for the codec device to resume and hence implicitly wait
for the enumeration/initialization to be completed. In the nominal
case where the codec device is already active the get_sync() would
only perform a ref-count increase.

The changes are directly inspired by RT711 and RT711-sdca changes.

Signed-off-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>
Reviewed-by: Ranjani Sridharan <ranjani.sridharan@linux.intel.com>
Reviewed-by: Rander Wang <rander.wang@intel.com>
Reviewed-by: Bard Liao <yung-chuan.liao@linux.intel.com>
Link: https://lore.kernel.org/r/20230802153629.53576-9-pierre-louis.bossart@linux.intel.com
Signed-off-by: Mark Brown <broonie@kernel.org>
This commit is contained in:
Pierre-Louis Bossart 2023-08-02 10:36:21 -05:00 committed by Mark Brown
parent f3da2ed110
commit 8d890ecef1
No known key found for this signature in database
GPG Key ID: 24D68B725D5487D0
1 changed files with 24 additions and 16 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

40
sound/soc/codecs/rt712-sdca-dmic.c
View File

@ -189,20 +189,11 @@ static int rt712_sdca_dmic_io_init(struct device *dev, struct sdw_slave *slave)
regcache_cache_bypass(rt712->mbq_regmap, true);
} else {
/*
* PM runtime is only enabled when a Slave reports as Attached
* PM runtime status is marked as 'active' only when a Slave reports as Attached
*/
/* set autosuspend parameters */
pm_runtime_set_autosuspend_delay(&slave->dev, 3000);
pm_runtime_use_autosuspend(&slave->dev);
/* update count of parent 'active' children */
pm_runtime_set_active(&slave->dev);
/* make sure the device does not suspend immediately */
pm_runtime_mark_last_busy(&slave->dev);
pm_runtime_enable(&slave->dev);
}
pm_runtime_get_noresume(&slave->dev);
@ -608,6 +599,9 @@ static int rt712_sdca_dmic_probe(struct snd_soc_component *component)
rt712->component = component;
if (!rt712->first_hw_init)
return 0;
ret = pm_runtime_resume(component->dev);
if (ret < 0 && ret != -EACCES)
return ret;
@ -794,10 +788,27 @@ static int rt712_sdca_dmic_init(struct device *dev, struct regmap *regmap,
&soc_sdca_dev_rt712_dmic,
rt712_sdca_dmic_dai,
ARRAY_SIZE(rt712_sdca_dmic_dai));
if (ret < 0)
return ret;
dev_dbg(&slave->dev, "%s\n", __func__);
/* set autosuspend parameters */
pm_runtime_set_autosuspend_delay(dev, 3000);
pm_runtime_use_autosuspend(dev);
return ret;
/* make sure the device does not suspend immediately */
pm_runtime_mark_last_busy(dev);
pm_runtime_enable(dev);
/* important note: the device is NOT tagged as 'active' and will remain
* 'suspended' until the hardware is enumerated/initialized. This is required
* to make sure the ASoC framework use of pm_runtime_get_sync() does not silently
* fail with -EACCESS because of race conditions between card creation and enumeration
*/
dev_dbg(dev, "%s\n", __func__);
return 0;
}
@ -957,10 +968,7 @@ static int rt712_sdca_dmic_sdw_probe(struct sdw_slave *slave,
static int rt712_sdca_dmic_sdw_remove(struct sdw_slave *slave)
{
struct rt712_sdca_dmic_priv *rt712 = dev_get_drvdata(&slave->dev);
if (rt712->first_hw_init)
pm_runtime_disable(&slave->dev);
pm_runtime_disable(&slave->dev);
return 0;
}