ALSA: hda: Add pplcllpl/u members to hdac_ext_stream

The pplcllpl/u can be used to save the Link Connection Linear Link
Position register value to be used for compensation of the LLP register
value in case the counter is not reset (after pause/resume or
stop/start without closing the stream).

The LLP can be used along with PPHCLDP to calculate delay caused by the DSP
processing for HDA links.

Cc: stable@vger.kernel.org # 6.8
Signed-off-by: Peter Ujfalusi <peter.ujfalusi@linux.intel.com>
Reviewed-by: Kai Vehmanen <kai.vehmanen@linux.intel.com>
Reviewed-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>
Link: https://msgid.link/r/20240321130814.4412-17-peter.ujfalusi@linux.intel.com
Signed-off-by: Mark Brown <broonie@kernel.org>

diff --git a/include/sound/hdaudio_ext.h b/include/sound/hdaudio_ext.h
index a8bebac1e4b28dd3d0195894dc96e18f74184992..957295364a5e3c1aa3bc8a9108a7da02e7b6ee44 100644 (file)
--- a/include/sound/hdaudio_ext.h
+++ b/include/sound/hdaudio_ext.h
@@ -56,6 +56,9 @@ struct hdac_ext_stream {
        u32 pphcldpl;
        u32 pphcldpu;
 
+       u32 pplcllpl;
+       u32 pplcllpu;
+
        bool decoupled:1;
        bool link_locked:1;
        bool link_prepared;