On Mon, 12 Dec 2016 19:10:41 +0100,
Jerome Anand wrote:
>
> Use a hw register to calculate sub-period position reports.
> This makes PulseAudio happier.
>
> Signed-off-by: David Henningsson <david.hennings...@canonical.com>
> Signed-off-by: Pierre-Louis Bossart <pierre-louis.boss...@linux.intel.com>
> Signed-off-by: Jerome Anand <jerome.an...@intel.com>
There is no big merit to keep this a separate patch.
Please fold into the main patch.
You can put some comment in the code for explanation.
thanks,
Takashi
> ---
> 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;
> }
>
> --
> 2.9.3
>
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