drm/i915/glk: Add cold boot sequence for GLK DSI

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As per BSEPC, if device ready bit is '0' in enable IO sequence
then its a cold boot/reset scenario eg: S3/S4 resume. If cold boot
scenario detected in enable IO, then prepare port immediately.
In normal boot scenario, prepare port after glk_dsi_device_ready().
Without cold boot sequence enabled, features like S3/S4 doesn't work.

Signed-off-by: Madhav Chauhan <madhav.chauhan@intel.com>
Signed-off-by: Jani Nikula <jani.nikula@intel.com>
Link: http://patchwork.freedesktop.org/patch/msgid/1497340095-5877-2-git-send-email-madhav.chauhan@intel.com

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Madhav Chauhan 2017-06-13 13:18:15 +05:30 • committed by Jani Nikula

parent 74e4ce6a78

commit 8a1deb329f

1 changed files with 51 additions and 28 deletions

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drivers/gpu/drm/i915/intel_dsi.c

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