From: Marcin Rajwa marcin.rajwa@linux.intel.com
This patch prevents the reset of host period bytes and uses no_stream_position to record requests for stream position.
Signed-off-by: Marcin Rajwa marcin.rajwa@linux.intel.com Signed-off-by: Pierre-Louis Bossart pierre-louis.bossart@linux.intel.com --- sound/soc/sof/intel/hda-pcm.c | 15 ++++++++++++--- 1 file changed, 12 insertions(+), 3 deletions(-)
diff --git a/sound/soc/sof/intel/hda-pcm.c b/sound/soc/sof/intel/hda-pcm.c index 9b730f183529..575f5f5877d8 100644 --- a/sound/soc/sof/intel/hda-pcm.c +++ b/sound/soc/sof/intel/hda-pcm.c @@ -89,6 +89,7 @@ int hda_dsp_pcm_hw_params(struct snd_sof_dev *sdev, struct hdac_ext_stream *stream = stream_to_hdac_ext_stream(hstream); struct sof_intel_hda_dev *hda = sdev->pdata->hw_pdata; struct snd_dma_buffer *dmab; + struct sof_ipc_fw_version *v = &sdev->fw_ready.version; int ret; u32 size, rate, bits;
@@ -116,9 +117,17 @@ int hda_dsp_pcm_hw_params(struct snd_sof_dev *sdev, /* disable SPIB, to enable buffer wrap for stream */ hda_dsp_stream_spib_config(sdev, stream, HDA_DSP_SPIB_DISABLE, 0);
- /* set host_period_bytes to 0 if no IPC position */ - if (hda && hda->no_ipc_position) - ipc_params->host_period_bytes = 0; + /* update no_stream_position flag for ipc params */ + if (hda && hda->no_ipc_position) { + /* For older ABIs set host_period_bytes to zero to inform + * FW we don't want position updates. Newer versions use + * no_stream_position for this purpose. + */ + if (v->abi_version < SOF_ABI_VER(3, 10, 0)) + ipc_params->host_period_bytes = 0; + else + ipc_params->no_stream_position = 1; + }
ipc_params->stream_tag = hstream->stream_tag;