Use a hw register to calculate sub-period position reports. This makes PulseAudio happier.

Signed-off-by: David Henningsson david.henningsson@canonical.com Signed-off-by: Pierre-Louis Bossart pierre-louis.bossart@linux.intel.com Signed-off-by: Jerome Anand jerome.anand@intel.com --- sound/x86/intel_hdmi_audio.c | 12 +++++++++++- 1 file changed, 11 insertions(+), 1 deletion(-)

diff --git a/sound/x86/intel_hdmi_audio.c b/sound/x86/intel_hdmi_audio.c index 461b7d7..d9ce750 100644 --- a/sound/x86/intel_hdmi_audio.c +++ b/sound/x86/intel_hdmi_audio.c @@ -1492,6 +1492,8 @@ static snd_pcm_uframes_t snd_intelhad_pcm_pointer( { struct snd_intelhad *intelhaddata; u32 bytes_rendered = 0; + u32 t; + int buf_id;

/* pr_debug("snd_intelhad_pcm_pointer called\n"); */

@@ -1502,6 +1504,14 @@ static snd_pcm_uframes_t snd_intelhad_pcm_pointer( return SNDRV_PCM_POS_XRUN; }

+ 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); */ + } + t = intelhaddata->buf_info[buf_id].buf_size - t; + if (intelhaddata->stream_info.buffer_rendered) div_u64_rem(intelhaddata->stream_info.buffer_rendered, intelhaddata->stream_info.ring_buf_size, @@ -1509,7 +1519,7 @@ static snd_pcm_uframes_t snd_intelhad_pcm_pointer(

intelhaddata->stream_info.buffer_ptr = bytes_to_frames( substream->runtime, - bytes_rendered); + bytes_rendered + t); return intelhaddata->stream_info.buffer_ptr; }