> -----Original Message-----
> From: Intel-gfx <intel-gfx-boun...@lists.freedesktop.org> On Behalf Of Ville
> Syrjala
> Sent: 01 September 2023 18:35
> To: intel-gfx@lists.freedesktop.org
> Subject: [Intel-gfx] [PATCH 09/12] drm/i915: Disable VRR during seamless
> M/N changes
>
> From: Ville Syrjälä <ville.syrj...@linux.intel.com>
>
> Make life less confusing by making sure VRR is disabled whenever we do any
> drastic changes to the display timings, such as seamless M/N changes.
>
> Cc: Manasi Navare <navareman...@chromium.org>
> Signed-off-by: Ville Syrjälä <ville.syrj...@linux.intel.com>
> ---
> drivers/gpu/drm/i915/display/intel_display.c | 6 ++++--
> 1 file changed, 4 insertions(+), 2 deletions(-)
>
> diff --git a/drivers/gpu/drm/i915/display/intel_display.c
> b/drivers/gpu/drm/i915/display/intel_display.c
> index c20eaf0e7a91..cbbee303cd00 100644
> --- a/drivers/gpu/drm/i915/display/intel_display.c
> +++ b/drivers/gpu/drm/i915/display/intel_display.c
> @@ -916,13 +916,15 @@ static bool planes_disabling(const struct
> intel_crtc_state *old_crtc_state, static bool vrr_enabling(const struct
> intel_crtc_state *old_crtc_state,
> const struct intel_crtc_state *new_crtc_state) {
> - return is_enabling(vrr.enable, old_crtc_state, new_crtc_state);
> + return is_enabling(vrr.enable, old_crtc_state, new_crtc_state) ||
> + (new_crtc_state->vrr.enable && new_crtc_state-
> >update_m_n);
> }
>
> static bool vrr_disabling(const struct intel_crtc_state *old_crtc_state,
> const struct intel_crtc_state *new_crtc_state) {
> - return is_disabling(vrr.enable, old_crtc_state, new_crtc_state);
> + return is_disabling(vrr.enable, old_crtc_state, new_crtc_state) ||
> + (old_crtc_state->vrr.enable && new_crtc_state-
> >update_m_n);
> }
It seems when VRR is already enabled and during seamless M/N changes, disabled
VRR and
enabled back again.
Change LGTM.
Reviewed-by: Mitul Golani <mitulkumar.ajitkumar.gol...@intel.com>
>
> #undef is_disabling
> --
> 2.41.0
