• Mengdong Lin's avatar
    ALSA: hda - Move hda_i915.c from sound/pci/hda to sound/hda · 98d8fc6c
    Mengdong Lin authored
    The file is moved to hda core and renamed to hdac_i915.c, so can be used
    by both legacy HDA driver and new Skylake audio driver.
    
    - Add snd_hdac_ prefix to the public APIs.
    - The i915 audio component is moved to core bus and dynamically allocated.
    - A static pointer hdac_acomp is used to help bind/unbind callbacks to get
      this component, because the sound card's private_data is used by the azx
      chip pointer, which is a legacy structure. It could be removed if private
      _data changes to some core structure which can be extended to find the
      bus.
    - snd_hdac_get_display_clk() is added to get the display core clock for
      HSW/BDW.
    - haswell_set_bclk() is moved to hda_intel.c because it needs to write the
      controller registers EM4/EM5, and only legacy HD-A needs it for HSW/BDW.
    - Move definition of HSW/BDW-specific registers EM4/EM5 to hda_register.h
      and rename them to HSW_EM4/HSW_EM5, because other HD-A controllers have
      different layout for the extended mode registers.
    Signed-off-by: default avatarMengdong Lin <mengdong.lin@intel.com>
    Signed-off-by: default avatarTakashi Iwai <tiwai@suse.de>
    98d8fc6c
hda_intel.h 1.47 KB