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[0/3] Tegra194 HW Fixes

Message ID 1588580176-2801-1-git-send-email-spujar@nvidia.com
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Series Tegra194 HW Fixes | expand

Message

Sameer Pujar May 4, 2020, 8:16 a.m. UTC 
This series proposes SW workarounds for Tegra194 HDA HW bugs.
Following are the two issues seen:
 1. GCAP register does not reflect true capability.
    The actual number of SDO lines is "4", where as it reflects "2".
 2. With 4 SDO line configuration playback fails for,
    44.1K/48K, 2-channel, 16-bps audio stream.

After fixing [1], issue [2] is uncovered.
As per recommendation by Tegra HW team the workarounds are pushed.

Testing done
============
 * Verify GCAP register after registering HDA sound card
 * Verify audio playback for 44.1K/48K, 2-channel, 16-bps.

Sameer Pujar (3):
  ALSA: hda/tegra: correct number of SDO lines for Tegra194
  ALSA: hda: add member to store ratio for stripe control
  ALSA: hda/tegra: workaround playback failure on Tegra194

 include/sound/hdaudio.h     |  3 +++
 sound/hda/hdac_controller.c | 11 ++++++++++
 sound/hda/hdac_stream.c     |  2 +-
 sound/pci/hda/hda_tegra.c   | 50 +++++++++++++++++++++++++++++++++++++++++++++
 4 files changed, 65 insertions(+), 1 deletion(-)