diff --git a/sound/soc/sof/intel/hda-stream.c b/sound/soc/sof/intel/hda-stream.c index 6290b2df5e621d..47eff161c60e3d 100644 --- a/sound/soc/sof/intel/hda-stream.c +++ b/sound/soc/sof/intel/hda-stream.c @@ -465,8 +465,8 @@ irqreturn_t hda_dsp_stream_threaded_handler(int irq, void *context) { struct hdac_bus *bus = context; struct sof_intel_hda_dev *sof_hda = bus_to_sof_hda(bus); - struct hdac_stream *s; u32 status = snd_hdac_chip_readl(bus, INTSTS); + struct hdac_stream *s; u32 sd_status; /* check streams */ @@ -486,7 +486,7 @@ irqreturn_t hda_dsp_stream_threaded_handler(int irq, void *context) /* Inform ALSA only in case not do that with IPC */ if (sof_hda->no_ipc_position) - snd_pcm_period_elapsed(s->substream); + snd_sof_pcm_period_elapsed(s->substream); } } diff --git a/sound/soc/sof/ipc.c b/sound/soc/sof/ipc.c index bf58d58e737964..437e80a07bc2c4 100644 --- a/sound/soc/sof/ipc.c +++ b/sound/soc/sof/ipc.c @@ -445,7 +445,7 @@ static void ipc_period_elapsed(struct snd_sof_dev *sdev, u32 msg_id) /* only inform ALSA for period_wakeup mode */ if (!stream->substream->runtime->no_period_wakeup) - snd_pcm_period_elapsed(stream->substream); + snd_sof_pcm_period_elapsed(stream->substream); } /* DSP notifies host of an XRUN within FW */ diff --git a/sound/soc/sof/pcm.c b/sound/soc/sof/pcm.c index be4984c4da4eb8..649968841dad9f 100644 --- a/sound/soc/sof/pcm.c +++ b/sound/soc/sof/pcm.c @@ -52,6 +52,48 @@ static int sof_pcm_dsp_params(struct snd_sof_pcm *spcm, struct snd_pcm_substream return ret; } +/* + * sof pcm period elapse work + */ +static void sof_pcm_period_elapsed_work(struct work_struct *work) +{ + struct snd_sof_pcm_stream *sps = + container_of(work, struct snd_sof_pcm_stream, + period_elapsed_work); + + snd_pcm_period_elapsed(sps->substream); +} + +/* + * sof pcm period elapse, this could be called at irq thread context. + */ +void snd_sof_pcm_period_elapsed(struct snd_pcm_substream *substream) +{ + struct snd_soc_pcm_runtime *rtd = substream->private_data; + struct snd_soc_component *component = + snd_soc_rtdcom_lookup(rtd, DRV_NAME); + struct snd_sof_dev *sdev = snd_soc_component_get_drvdata(component); + struct snd_sof_pcm *spcm; + + spcm = snd_sof_find_spcm_dai(sdev, rtd); + if (!spcm) { + dev_err(sdev->dev, + "error: period elapsed for unknown stream!\n"); + return; + } + + /* + * snd_pcm_period_elapsed() can be called in interrupt context + * before IRQ_HANDLED is returned. Inside snd_pcm_period_elapsed(), + * when the PCM is done draining or xrun happened, a STOP IPC will + * then be sent and this IPC will hit IPC timeout. + * To avoid sending IPC before the previous IPC is handled, we + * schedule delayed work here to call the snd_pcm_period_elapsed(). + */ + schedule_work(&spcm->stream[substream->stream].period_elapsed_work); +} +EXPORT_SYMBOL(snd_sof_pcm_period_elapsed); + /* this may get called several times by oss emulation */ static int sof_pcm_hw_params(struct snd_pcm_substream *substream, struct snd_pcm_hw_params *params) @@ -169,6 +211,9 @@ static int sof_pcm_hw_params(struct snd_pcm_substream *substream, /* save pcm hw_params */ memcpy(&spcm->params[substream->stream], params, sizeof(*params)); + INIT_WORK(&spcm->stream[substream->stream].period_elapsed_work, + sof_pcm_period_elapsed_work); + return ret; } @@ -203,6 +248,9 @@ static int sof_pcm_hw_free(struct snd_pcm_substream *substream) sizeof(stream), &reply, sizeof(reply)); snd_pcm_lib_free_pages(substream); + + cancel_work_sync(&spcm->stream[substream->stream].period_elapsed_work); + return ret; } diff --git a/sound/soc/sof/sof-priv.h b/sound/soc/sof/sof-priv.h index 35e78ffecce2fe..675bb10c82f597 100644 --- a/sound/soc/sof/sof-priv.h +++ b/sound/soc/sof/sof-priv.h @@ -274,6 +274,7 @@ struct snd_sof_pcm_stream { struct snd_dma_buffer page_table; struct sof_ipc_stream_posn posn; struct snd_pcm_substream *substream; + struct work_struct period_elapsed_work; }; /* ALSA SOF PCM device */ @@ -495,6 +496,7 @@ struct snd_sof_pcm *snd_sof_find_spcm_comp(struct snd_sof_dev *sdev, int *direction); struct snd_sof_pcm *snd_sof_find_spcm_pcm_id(struct snd_sof_dev *sdev, unsigned int pcm_id); +void snd_sof_pcm_period_elapsed(struct snd_pcm_substream *substream); /* * Stream IPC