Hi,
the following patches enable DisplayPort Audio on Cherrytrail machines when applied on top of my topic/intel-lpe-audio branch. Tests of DP audio were run on Dell Wyse 3040. The regression test were performed on Baytrail (Compute Stick) and Cherrytrail (Zotac PI330) in HDMI mode. On Cherrytrail there were no issues changing between HDMI and DP connectors dynamically.
Could you i915 people review and give ACK if they are OK? The changes in drm/i915 side are fairly trivial, so I'd like to take them through sound git tree once after I receive your ACKs.
Changes since RFC: - reordered and squashed patches - clean-up of register definitions and offsets (based on feedback from Jani/Ville) - unmute amp for both HDMI and DP unconditionally - mute amp on invalid ELD (unplug) - remove test for chicken bit which seems to have no effect in hardware - cosmetic edits to make checkpatch happy - change i915 notification argument to pass the plataform device instead
Most of hard work in this patchset has been done by Pierre, so all credits go to him.
thanks,
Takashi
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Pierre-Louis Bossart (4): drm/i915: add DP support in LPE audio mode drm/i915: add DisplayPort amp unmute for LPE audio mode ALSA: x86: intel_hdmi: add definitions and logic for DP audio ALSA: x86: Use config base depending on the pipe
Takashi Iwai (3): drm/i915: Avoid MST pipe handling for LPE audio drm/i915: Pass pipe to LPE audio notification drm/i915: Pass platform device to LPE audio notifier
drivers/gpu/drm/i915/i915_drv.h | 3 +- drivers/gpu/drm/i915/i915_reg.h | 10 ++ drivers/gpu/drm/i915/intel_audio.c | 38 +++++--- drivers/gpu/drm/i915/intel_lpe_audio.c | 28 +++++- include/drm/intel_lpe_audio.h | 7 +- sound/x86/intel_hdmi_audio.c | 173 ++++++++++++++++++++++++++++----- sound/x86/intel_hdmi_audio.h | 8 +- sound/x86/intel_hdmi_lpe_audio.c | 83 ++++++++++++---- sound/x86/intel_hdmi_lpe_audio.h | 29 ++++++ 9 files changed, 315 insertions(+), 64 deletions(-)