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[16/17] ALSA: hda: Add pplcllpl/u members to hdac_ext_stream

Message ID 20240321130814.4412-17-peter.ujfalusi@linux.intel.com (mailing list archive)
State Accepted
Commit f9eeb6bb13fb5d7af1ea5b74a10b1f8ead962540
Headers show
Series ASoC: SOF: ipc4/Intel: Fix delay reporting (for 6.9 / 6.8) | expand

Commit Message

Peter Ujfalusi March 21, 2024, 1:08 p.m. UTC 
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>
---
 include/sound/hdaudio_ext.h | 3 +++
 1 file changed, 3 insertions(+)
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Patch

diff --git a/include/sound/hdaudio_ext.h b/include/sound/hdaudio_ext.h
index a8bebac1e4b2..957295364a5e 100644
--- 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;