drm/i915: Read Vprime thrice incase of mismatch

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In case of V prime mismatch, DP HDCP spec mandates the re-read of
Vprime atleast twice.

This patch needed for DP HDCP1.4 CTS Test: 1B-05.

v2:
  Moved the V' validation into a function for retry. [Sean Paul]
v3:
  Removed Inline keyword and DRM_DEBUG_KMS are used [Sean Paul]

Signed-off-by: Ramalingam C <ramalingam.c@intel.com>
Reviewed-by: Sean Paul <seanpaul@chromium.org>
Signed-off-by: Rodrigo Vivi <rodrigo.vivi@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/1522663834-24482-3-git-send-email-ramalingam.c@intel.com

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Ramalingam C 2018-04-02 15:40:32 +05:30 • committed by Rodrigo Vivi

parent 4bfbec6896

commit 41baafae29

1 changed files with 70 additions and 42 deletions

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drivers/gpu/drm/i915/intel_hdcp.c

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