diff options
Diffstat (limited to 'sound')
| -rw-r--r-- | sound/soc/qcom/qdsp6/q6apm-dai.c | 16 |
1 files changed, 15 insertions, 1 deletions
diff --git a/sound/soc/qcom/qdsp6/q6apm-dai.c b/sound/soc/qcom/qdsp6/q6apm-dai.c index ee59ef36b85a..bd35067a4052 100644 --- a/sound/soc/qcom/qdsp6/q6apm-dai.c +++ b/sound/soc/qcom/qdsp6/q6apm-dai.c @@ -8,6 +8,7 @@ #include <linux/slab.h> #include <sound/soc.h> #include <sound/soc-dapm.h> +#include <linux/spinlock.h> #include <sound/pcm.h> #include <asm/dma.h> #include <linux/dma-mapping.h> @@ -53,6 +54,7 @@ struct q6apm_dai_rtd { uint16_t session_id; enum stream_state state; struct q6apm_graph *graph; + spinlock_t lock; }; struct q6apm_dai_data { @@ -99,20 +101,25 @@ static void event_handler(uint32_t opcode, uint32_t token, uint32_t *payload, vo { struct q6apm_dai_rtd *prtd = priv; struct snd_pcm_substream *substream = prtd->substream; + unsigned long flags; switch (opcode) { case APM_CLIENT_EVENT_CMD_EOS_DONE: prtd->state = Q6APM_STREAM_STOPPED; break; case APM_CLIENT_EVENT_DATA_WRITE_DONE: + spin_lock_irqsave(&prtd->lock, flags); prtd->pos += prtd->pcm_count; + spin_unlock_irqrestore(&prtd->lock, flags); snd_pcm_period_elapsed(substream); if (prtd->state == Q6APM_STREAM_RUNNING) q6apm_write_async(prtd->graph, prtd->pcm_count, 0, 0, 0); break; case APM_CLIENT_EVENT_DATA_READ_DONE: + spin_lock_irqsave(&prtd->lock, flags); prtd->pos += prtd->pcm_count; + spin_unlock_irqrestore(&prtd->lock, flags); snd_pcm_period_elapsed(substream); if (prtd->state == Q6APM_STREAM_RUNNING) q6apm_read(prtd->graph); @@ -253,6 +260,7 @@ static int q6apm_dai_open(struct snd_soc_component *component, if (prtd == NULL) return -ENOMEM; + spin_lock_init(&prtd->lock); prtd->substream = substream; prtd->graph = q6apm_graph_open(dev, (q6apm_cb)event_handler, prtd, graph_id); if (IS_ERR(prtd->graph)) { @@ -332,11 +340,17 @@ static snd_pcm_uframes_t q6apm_dai_pointer(struct snd_soc_component *component, { struct snd_pcm_runtime *runtime = substream->runtime; struct q6apm_dai_rtd *prtd = runtime->private_data; + snd_pcm_uframes_t ptr; + unsigned long flags; + spin_lock_irqsave(&prtd->lock, flags); if (prtd->pos == prtd->pcm_size) prtd->pos = 0; - return bytes_to_frames(runtime, prtd->pos); + ptr = bytes_to_frames(runtime, prtd->pos); + spin_unlock_irqrestore(&prtd->lock, flags); + + return ptr; } static int q6apm_dai_hw_params(struct snd_soc_component *component, |