[PATCH 0/2 V4] Power-well API implementation for Haswell

[Wang Xingchao <xingchao.wang@linux.intel.com>]

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

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1.7.9.5