On 2020-07-14 at 21:36:27 +0530, Sean Paul wrote:
> From: Sean Paul <seanpaul@xxxxxxxxxxxx>
>
> Instead of doing a full modeset to enable/disable content protection,
> simply go through the update_pipe flow which was introduced in the
> related patch below. This avoids flashing the screen every time the user
> starts viewing protected content.
>
> Related: 634852d1f468 ("drm/i915: HDCP state handling in ddi_update_pipe")
> Cc: Ramalingam C <ramalingam.c@xxxxxxxxx>
> Cc: Daniel Vetter <daniel.vetter@xxxxxxxx>
> Cc: Jani Nikula <jani.nikula@xxxxxxxxxxxxxxx>
> Cc: Joonas Lahtinen <joonas.lahtinen@xxxxxxxxxxxxxxx>
> Cc: Rodrigo Vivi <rodrigo.vivi@xxxxxxxxx>
> Cc: intel-gfx@xxxxxxxxxxxxxxxxxxxxx
> Signed-off-by: Sean Paul <seanpaul@xxxxxxxxxxxx>
> ---
> drivers/gpu/drm/i915/display/intel_hdcp.c | 2 +-
> 1 file changed, 1 insertion(+), 1 deletion(-)
>
> diff --git a/drivers/gpu/drm/i915/display/intel_hdcp.c b/drivers/gpu/drm/i915/display/intel_hdcp.c
> index 89a4d294822d..839ce1715253 100644
> --- a/drivers/gpu/drm/i915/display/intel_hdcp.c
> +++ b/drivers/gpu/drm/i915/display/intel_hdcp.c
> @@ -2191,7 +2191,7 @@ void intel_hdcp_atomic_check(struct drm_connector *connector,
> return;
> }
>
> - crtc_state->mode_changed = true;
> + to_intel_crtc_state(crtc_state)->update_pipe = true;
IMHO intel_crtc_check_fastset() make sure that every crtc_state->mode_changed
will not turn up to a modeset. It seems it is already being taken care.
Thanks,
Anshuman Gupta.
> }
>
> /* Handles the CP_IRQ raised from the DP HDCP sink */
> --
> Sean Paul, Software Engineer, Google / Chromium OS
>
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