diff options
| -rw-r--r-- | sound/x86/intel_hdmi_audio.c | 21 |
1 files changed, 18 insertions, 3 deletions
diff --git a/sound/x86/intel_hdmi_audio.c b/sound/x86/intel_hdmi_audio.c index b69521aa2ed1..f30155446117 100644 --- a/sound/x86/intel_hdmi_audio.c +++ b/sound/x86/intel_hdmi_audio.c @@ -43,6 +43,7 @@ static DEFINE_MUTEX(had_mutex); static int hdmi_card_index = SNDRV_DEFAULT_IDX1; static char *hdmi_card_id = SNDRV_DEFAULT_STR1; static struct snd_intelhad *had_data; +static int underrun_count; module_param_named(index, hdmi_card_index, int, 0444); MODULE_PARM_DESC(index, @@ -1052,6 +1053,7 @@ static int snd_intelhad_open(struct snd_pcm_substream *substream) intelhaddata = snd_pcm_substream_chip(substream); had_stream = intelhaddata->private_data; runtime = substream->runtime; + underrun_count = 0; pm_runtime_get(intelhaddata->dev); @@ -1445,10 +1447,23 @@ static snd_pcm_uframes_t snd_intelhad_pcm_pointer( buf_id = intelhaddata->curr_buf % 4; had_read_register(AUD_BUF_A_LENGTH + (buf_id * HAD_REG_WIDTH), &t); - if (t == 0) { - pr_debug("discovered buffer done for buf %d\n", buf_id); - /* had_process_buffer_done(intelhaddata); */ + + if ((t == 0) || (t == ((u32)-1L))) { + underrun_count++; + pr_debug("discovered buffer done for buf %d, count = %d\n", + buf_id, underrun_count); + + if (underrun_count > (HAD_MIN_PERIODS/2)) { + pr_debug("assume audio_codec_reset, underrun = %d - do xrun\n", + underrun_count); + underrun_count = 0; + return SNDRV_PCM_POS_XRUN; + } + } else { + /* Reset Counter */ + underrun_count = 0; } + t = intelhaddata->buf_info[buf_id].buf_size - t; if (intelhaddata->stream_info.buffer_rendered) |