From 6374f493d93b2232444b94989c380d5aada5b810 Mon Sep 17 00:00:00 2001 From: Kuninori Morimoto Date: Tue, 1 Dec 2020 08:51:33 +0900 Subject: ASoC: soc-pcm: care trigger rollback soc_pcm_trigger() calls DAI/Component/Link trigger, but some of them might be failed. static int soc_pcm_trigger(...) { ... switch (cmd) { case SNDRV_PCM_TRIGGER_START: case SNDRV_PCM_TRIGGER_RESUME: case SNDRV_PCM_TRIGGER_PAUSE_RELEASE: ret = snd_soc_link_trigger(substream, cmd); if (ret < 0) break; (*) ret = snd_soc_pcm_component_trigger(substream, cmd); if (ret < 0) break; ret = snd_soc_pcm_dai_trigger(substream, cmd); break; case SNDRV_PCM_TRIGGER_STOP: case SNDRV_PCM_TRIGGER_SUSPEND: case SNDRV_PCM_TRIGGER_PAUSE_PUSH: ret = snd_soc_pcm_dai_trigger(substream, cmd); if (ret < 0) break; ret = snd_soc_pcm_component_trigger(substream, cmd); if (ret < 0) break; ret = snd_soc_link_trigger(substream, cmd); break; } ... } For example, if soc_pcm_trigger() failed at (*) point, we need to rollback previous succeeded trigger. This patch adds trigger mark for DAI/Component/Link, and do STOP if START/RESUME/PAUSE_RELEASE were failed. Because it need to use new rollback parameter, we need to modify DAI/Component/Link trigger functions in the same time. Signed-off-by: Kuninori Morimoto Link: https://lore.kernel.org/r/87a6uycssd.wl-kuninori.morimoto.gx@renesas.com Signed-off-by: Mark Brown --- sound/soc/soc-pcm.c | 42 +++++++++++++++++++++++++++++++++--------- 1 file changed, 33 insertions(+), 9 deletions(-) (limited to 'sound/soc/soc-pcm.c') diff --git a/sound/soc/soc-pcm.c b/sound/soc/soc-pcm.c index 707c1a49f6b2..ee51dc7fd893 100644 --- a/sound/soc/soc-pcm.c +++ b/sound/soc/soc-pcm.c @@ -1012,37 +1012,61 @@ out: static int soc_pcm_trigger(struct snd_pcm_substream *substream, int cmd) { - int ret = -EINVAL; + int ret = -EINVAL, _ret = 0; + int rollback = 0; switch (cmd) { case SNDRV_PCM_TRIGGER_START: case SNDRV_PCM_TRIGGER_RESUME: case SNDRV_PCM_TRIGGER_PAUSE_RELEASE: - ret = snd_soc_link_trigger(substream, cmd); + ret = snd_soc_link_trigger(substream, cmd, 0); if (ret < 0) - break; + goto start_err; + + ret = snd_soc_pcm_component_trigger(substream, cmd, 0); + if (ret < 0) + goto start_err; - ret = snd_soc_pcm_component_trigger(substream, cmd); + ret = snd_soc_pcm_dai_trigger(substream, cmd, 0); +start_err: if (ret < 0) + rollback = 1; + } + + if (rollback) { + _ret = ret; + switch (cmd) { + case SNDRV_PCM_TRIGGER_START: + cmd = SNDRV_PCM_TRIGGER_STOP; + break; + case SNDRV_PCM_TRIGGER_RESUME: + cmd = SNDRV_PCM_TRIGGER_SUSPEND; + break; + case SNDRV_PCM_TRIGGER_PAUSE_RELEASE: + cmd = SNDRV_PCM_TRIGGER_PAUSE_PUSH; break; + } + } - ret = snd_soc_pcm_dai_trigger(substream, cmd); - break; + switch (cmd) { case SNDRV_PCM_TRIGGER_STOP: case SNDRV_PCM_TRIGGER_SUSPEND: case SNDRV_PCM_TRIGGER_PAUSE_PUSH: - ret = snd_soc_pcm_dai_trigger(substream, cmd); + ret = snd_soc_pcm_dai_trigger(substream, cmd, rollback); if (ret < 0) break; - ret = snd_soc_pcm_component_trigger(substream, cmd); + ret = snd_soc_pcm_component_trigger(substream, cmd, rollback); if (ret < 0) break; - ret = snd_soc_link_trigger(substream, cmd); + ret = snd_soc_link_trigger(substream, cmd, rollback); break; } + if (_ret) + ret = _ret; + return ret; } -- cgit v1.2.3