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authorKuninori Morimoto <kuninori.morimoto.gx@renesas.com>2020-09-28 03:01:17 +0300
committerMark Brown <broonie@kernel.org>2020-09-28 19:01:44 +0300
commit939a5cfb2a5609d2d6f996b5cd853397a82a92b9 (patch)
tree34d43a71c829f23b193dfdc20e5194170970a43b /sound/soc/soc-component.c
parent51aff91ad123e03d1461ec1d980efd1814dca69e (diff)
downloadlinux-939a5cfb2a5609d2d6f996b5cd853397a82a92b9.tar.xz
ASoC: soc-component: add mark for snd_soc_pcm_component_pm_runtime_get/put()
soc_pcm_open() does rollback when failed (A), but, it is almost same as soc_pcm_close(). static int soc_pcm_open(xxx) { ... if (ret < 0) goto xxx_err; ... return 0; ^ config_err: | ... | rtd_startup_err: (A) ... | component_err: | ... v return ret; } The difference is soc_pcm_close() is for all dai/component/substream, rollback is for succeeded part only. This kind of duplicated code can be a hotbed of bugs, thus, we want to share soc_pcm_close() and rollback. Now, soc_pcm_open/close() are handling 1) snd_soc_dai_startup/shutdown() 2) snd_soc_link_startup/shutdown() 3) snd_soc_component_module_get/put() 4) snd_soc_component_open/close() => 5) pm_runtime_put/get() This patch is for 5) pm_runtime_put/get(). The idea of having bit-flag or counter is not enough for this purpose. For example if one DAI is used for 2xPlaybacks for some reasons, and if 1st Playback was succeeded but 2nd Playback was failed, 2nd Playback rollback doesn't need to call shutdown. But it has succeeded bit-flag or counter via 1st Playback, thus, 2nd Playback rollback will call unneeded shutdown. And 1st Playback's necessary shutdown will not be called, because bit-flag or counter was cleared by wrong 2nd Playback rollback. To avoid such case, this patch marks substream pointer when get() was succeeded. If rollback needed, it will check rollback flag and marked substream pointer. One note here is that it cares *current* get() only now. but we might want to check *whole* marked substream in the future. This patch is using macro named "push/pop", so that it can be easily update. Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com> Link: https://lore.kernel.org/r/87h7ribwnb.wl-kuninori.morimoto.gx@renesas.com Signed-off-by: Mark Brown <broonie@kernel.org>
Diffstat (limited to 'sound/soc/soc-component.c')
-rw-r--r--sound/soc/soc-component.c38
1 files changed, 38 insertions, 0 deletions
diff --git a/sound/soc/soc-component.c b/sound/soc/soc-component.c
index 147b46e29ff4..728e93f35ffb 100644
--- a/sound/soc/soc-component.c
+++ b/sound/soc/soc-component.c
@@ -9,6 +9,7 @@
// Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
//
#include <linux/module.h>
+#include <linux/pm_runtime.h>
#include <sound/soc.h>
#define soc_component_ret(dai, ret) _soc_component_ret(dai, __func__, ret)
@@ -836,3 +837,40 @@ int snd_soc_pcm_component_trigger(struct snd_pcm_substream *substream,
return 0;
}
+
+int snd_soc_pcm_component_pm_runtime_get(struct snd_soc_pcm_runtime *rtd,
+ void *stream)
+{
+ struct snd_soc_component *component;
+ int i, ret;
+
+ for_each_rtd_components(rtd, i, component) {
+ ret = pm_runtime_get_sync(component->dev);
+ if (ret < 0 && ret != -EACCES) {
+ pm_runtime_put_noidle(component->dev);
+ return soc_component_ret(component, ret);
+ }
+ /* mark stream if succeeded */
+ soc_component_mark_push(component, stream, pm);
+ }
+
+ return 0;
+}
+
+void snd_soc_pcm_component_pm_runtime_put(struct snd_soc_pcm_runtime *rtd,
+ void *stream, int rollback)
+{
+ struct snd_soc_component *component;
+ int i;
+
+ for_each_rtd_components(rtd, i, component) {
+ if (rollback && !soc_component_mark_match(component, stream, pm))
+ continue;
+
+ pm_runtime_mark_last_busy(component->dev);
+ pm_runtime_put_autosuspend(component->dev);
+
+ /* remove marked stream */
+ soc_component_mark_pop(component, stream, pm);
+ }
+}