Patch is at https://chromium-review.googlesource.com/c/chromiumos/third_party/kernel/+/874852

The following revision refers to this bug:
  https://chromium.googlesource.com/chromiumos/third_party/kernel/+/337b03293334f91ca722eaa2b6669956453852de

commit 337b03293334f91ca722eaa2b6669956453852de
Author: Sean Paul <seanpaul@chromium.org>
Date: Wed Jan 24 01:41:59 2018

CHROMIUM: drm/i915: Don't modeset to toggle hdcp

This patch moves the hdcp enable/disable to atomic commit instead of
requiring a modeset. The result is a much better user experience since
the monitor doesn't flash everytime playback is initiated/stopped.

Upstream didn't like the added complexity of adding yet another thing in
commit_tail, so we'll keep this local for now. Hopefully once we
upstream the rockchip implementation (which shares some of this code),
we can move i915 along too.

BUG= 804309 
TEST=Tested on fizz, played protected content observed no flashes

Change-Id: Ia25119652b2cd9bc666a3670d04649e1d5fbc28a
Signed-off-by: Sean Paul <seanpaul@chromium.org>
Reviewed-on: https://chromium-review.googlesource.com/874852
Commit-Ready: Sean Paul <seanpaul@google.com>
Tested-by: Sean Paul <seanpaul@google.com>
Reviewed-by: Kristian H. Kristensen <hoegsberg@chromium.org>

[modify] https://crrev.com/337b03293334f91ca722eaa2b6669956453852de/drivers/gpu/drm/i915/intel_display.c
[modify] https://crrev.com/337b03293334f91ca722eaa2b6669956453852de/drivers/gpu/drm/i915/intel_ddi.c
[modify] https://crrev.com/337b03293334f91ca722eaa2b6669956453852de/drivers/gpu/drm/i915/intel_hdcp.c

Your change meets the bar and is auto-approved for M65. Please go ahead and merge the CL to branch 3325 manually. Please contact milestone owner if you have questions.
Owners: cmasso@(Android), cmasso@(iOS), bhthompson@(ChromeOS), govind@(Desktop)

For more details visit https://www.chromium.org/issue-tracking/autotriage - Your friendly Sheriffbot

The following revision refers to this bug:
  https://chromium.googlesource.com/chromiumos/third_party/kernel/+/66fc53282694f59203287eba4d4ffed95d513775

commit 66fc53282694f59203287eba4d4ffed95d513775
Author: Sean Paul <seanpaul@chromium.org>
Date: Wed Jan 24 19:01:18 2018

CHROMIUM: drm/i915: Don't modeset to toggle hdcp

This patch moves the hdcp enable/disable to atomic commit instead of
requiring a modeset. The result is a much better user experience since
the monitor doesn't flash everytime playback is initiated/stopped.

Upstream didn't like the added complexity of adding yet another thing in
commit_tail, so we'll keep this local for now. Hopefully once we
upstream the rockchip implementation (which shares some of this code),
we can move i915 along too.

BUG= 804309 
TEST=Tested on fizz, played protected content observed no flashes

Change-Id: Ia25119652b2cd9bc666a3670d04649e1d5fbc28a
Signed-off-by: Sean Paul <seanpaul@chromium.org>
Reviewed-on: https://chromium-review.googlesource.com/881603
Reviewed-by: Sean Paul <seanpaul@google.com>
Commit-Queue: Sean Paul <seanpaul@google.com>
Tested-by: Sean Paul <seanpaul@google.com>

[modify] https://crrev.com/66fc53282694f59203287eba4d4ffed95d513775/drivers/gpu/drm/i915/intel_display.c
[modify] https://crrev.com/66fc53282694f59203287eba4d4ffed95d513775/drivers/gpu/drm/i915/intel_ddi.c
[modify] https://crrev.com/66fc53282694f59203287eba4d4ffed95d513775/drivers/gpu/drm/i915/intel_hdcp.c

This issue has been approved for a merge. Please merge the fix to any appropriate branches as soon as possible!

If all merges have been completed, please remove any remaining Merge-Approved labels from this issue.

Thanks for your time! To disable nags, add the Disable-Nags label.

For more details visit https://www.chromium.org/issue-tracking/autotriage - Your friendly Sheriffbot

This issue has been approved for a merge. Please merge the fix to any appropriate branches as soon as possible!

If all merges have been completed, please remove any remaining Merge-Approved labels from this issue.

Thanks for your time! To disable nags, add the Disable-Nags label.

For more details visit https://www.chromium.org/issue-tracking/autotriage - Your friendly Sheriffbot