The following patches enable DisplayPort Audio on Cherrytrail machines when applied on top of Takashi's topic/intel-lpe-audio branch (tested on Zotac PI330) There are a couple of opens where I could use some help: - is it necessary to set a valid_bit which is used only for DP audio? - is the sequence to set the chicken bits and unmute the amplifier ok or can it be improved by being moved somewhere else in the i915 driver? - the register offset to be used by the audio driver depends on a combination of port/pipe/output type. Do we need to get access to the pipe information and when is it available (initial trials showed the pipe is still invalid when the audio notification happens) Feedback welcome! Pierre-Louis Bossart (5): drm: i915: add DP support in LPE audio mode ALSA: x86: intel_hdmi: add definitions and logic for DP audio ALSA: x86: intel_hdmi: set config bitfields for DP mode drm: i915: add DisplayPort amp unmute for LPE audio mode ALSA: x86: hdmi: hack to enable DP audio on CHT drivers/gpu/drm/i915/i915_drv.h | 3 +- drivers/gpu/drm/i915/i915_reg.h | 12 +++ drivers/gpu/drm/i915/intel_audio.c | 19 +++- drivers/gpu/drm/i915/intel_lpe_audio.c | 34 ++++++- include/drm/intel_lpe_audio.h | 2 + sound/x86/intel_hdmi_audio.c | 174 ++++++++++++++++++++++++++++----- sound/x86/intel_hdmi_audio.h | 8 +- sound/x86/intel_hdmi_lpe_audio.c | 44 ++++++++- sound/x86/intel_hdmi_lpe_audio.h | 29 ++++++ 9 files changed, 288 insertions(+), 37 deletions(-) -- 2.7.4 _______________________________________________ Intel-gfx mailing list Intel-gfx@xxxxxxxxxxxxxxxxxxxxx https://lists.freedesktop.org/mailman/listinfo/intel-gfx
