[Intel-gfx] [PATCH 0/2] HDMI detect optimization and support for HDMI compliance

shashank.sharma at intel.com shashank.sharma at intel.com
Tue Aug 12 14:38:19 CEST 2014


From: Shashank Sharma <shashank.sharma at intel.com>

This patch set adds 2 patches:
1. drm/i915: Optimize HDMI EDID reads
This patch adds a EDID caching solution in intel_hdmi_detect function
to avoid multiple EDID reads for single HPD. A delayed work function
makes sure that the cached EDID gets clear after a time out.

2. drm/i915: Support for HDMI complaince HPD
This patch adds support for HDMI analyzers. Most of the analyzers send a
soft HPD event, where the HDMI cable removal is not required. In such 
scenarios, DDC is always up so EDID is always available, for both HPD
up and down. So we have to rely on live status register to check the 
actual HPD status. 

Shashank Sharma (2):
  drm/i915: Optimize HDMI EDID reads
  drm/i915: Support for HDMI complaince HPD

 drivers/gpu/drm/i915/i915_drv.h    |   1 +
 drivers/gpu/drm/i915/i915_params.c |   6 ++
 drivers/gpu/drm/i915/intel_drv.h   |   5 +
 drivers/gpu/drm/i915/intel_hdmi.c  | 181 +++++++++++++++++++++++++++++++++++--
 4 files changed, 186 insertions(+), 7 deletions(-)

-- 
1.9.1




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