Hi all,
This is V4 and here're some changes notes:
change between V3-->V4: - add new structure i915_power_well - initialize drm_device pointer at module init time - change function name
change between V2-->V3: - make SND_HDA_I915 selectable - use snd_printdd to output message - add return error code check - use symbol_request to replace symbol_get - release power_well at azx_free - some typo fixes
changes between V1-->V2: - use reference count to track power-well usage - remove external module, compiled into snd-hda-intel instead - manage symbols and module loading properly - remove IS_HSW macro, use flag instead - remove audio callback for gfx driver to avoid dependency - split whole patch into two pieces for easy review - more typo fixes
Wang Xingchao (2): i915/drm: Add private api for power well usage ALSA: hda - Add power-welll support for haswell HDA
drivers/gpu/drm/i915/i915_dma.c | 6 +++ drivers/gpu/drm/i915/i915_drv.h | 12 +++++ drivers/gpu/drm/i915/intel_drv.h | 4 ++ drivers/gpu/drm/i915/intel_pm.c | 98 +++++++++++++++++++++++++++++++++++--- include/drm/i915_powerwell.h | 36 ++++++++++++++ sound/pci/hda/Kconfig | 10 ++++ sound/pci/hda/Makefile | 3 ++ sound/pci/hda/hda_i915.c | 75 +++++++++++++++++++++++++++++ sound/pci/hda/hda_i915.h | 35 ++++++++++++++ sound/pci/hda/hda_intel.c | 41 ++++++++++++++-- 10 files changed, 310 insertions(+), 10 deletions(-) create mode 100644 include/drm/i915_powerwell.h create mode 100644 sound/pci/hda/hda_i915.c create mode 100644 sound/pci/hda/hda_i915.h