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drm/i915: setup bridge for HDMI LPE audio driver

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Enable support for HDMI LPE audio mode on Baytrail and
Cherrytrail when HDaudio controller is not detected

Setup minimum required resources during i915_driver_load:
1. Create a platform device to share MMIO/IRQ resources
2. Make the platform device child of i915 device for runtime PM.
3. Create IRQ chip to forward HDMI LPE audio irqs.

HDMI LPE audio driver (a standalone sound driver) probes the
LPE audio device and creates a new sound card.

Signed-off-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>
Signed-off-by: Jerome Anand <jerome.anand@intel.com>
Acked-by: Jani Nikula <jani.nikula@intel.com>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
This commit is contained in:
Jerome Anand
2017-01-25 04:27:49 +05:30
committed by Takashi Iwai
parent 7a308bb301
commit eef57324d9
10 changed files with 438 additions and 2 deletions
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9
Documentation/gpu/i915.rst
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@@ -213,6 +213,15 @@ Video BIOS Table (VBT)
.. kernel-doc:: drivers/gpu/drm/i915/intel_vbt_defs.h
:internal:
intel hdmi lpe audio support
----------------------------
.. kernel-doc:: drivers/gpu/drm/i915/intel_lpe_audio.c
:doc: LPE Audio integration for HDMI or DP playback
.. kernel-doc:: drivers/gpu/drm/i915/intel_lpe_audio.c
:internal:
Memory Management and Command Submission
========================================