On Fri, Mar 01, 2024 at 04:35:57PM +0200, Ville Syrjala wrote:
> From: Ville Syrjälä <ville.syrj...@linux.intel.com>
>
> Copy the pipe bitmask based approach skl_commit_modeset_enables()
> into intel_commit_modeset_disables(). This avoids doing so many
> duplicated checks in all the loops, and also let's us WARN at the
> end if we screwed up somewhere and forgot to disable some pipe.
Reviewed-by: Stanislav Lisovskiy <stanislav.lisovs...@intel.com>
>
> Signed-off-by: Ville Syrjälä <ville.syrj...@linux.intel.com>
> ---
> drivers/gpu/drm/i915/display/intel_display.c | 27 ++++++++++++--------
> 1 file changed, 16 insertions(+), 11 deletions(-)
>
> diff --git a/drivers/gpu/drm/i915/display/intel_display.c
> b/drivers/gpu/drm/i915/display/intel_display.c
> index 8cc5de31c1dd..2351ee52d16e 100644
> --- a/drivers/gpu/drm/i915/display/intel_display.c
> +++ b/drivers/gpu/drm/i915/display/intel_display.c
> @@ -6775,9 +6775,10 @@ static void intel_old_crtc_state_disables(struct
> intel_atomic_state *state,
>
> static void intel_commit_modeset_disables(struct intel_atomic_state *state)
> {
> + struct drm_i915_private *i915 = to_i915(state->base.dev);
> struct intel_crtc_state *new_crtc_state, *old_crtc_state;
> struct intel_crtc *crtc;
> - u32 handled = 0;
> + u8 disable_pipes = 0;
> int i;
>
> for_each_oldnew_intel_crtc_in_state(state, crtc, old_crtc_state,
> @@ -6785,21 +6786,24 @@ static void intel_commit_modeset_disables(struct
> intel_atomic_state *state)
> if (!intel_crtc_needs_modeset(new_crtc_state))
> continue;
>
> + /*
> + * Needs to be done even for pipes
> + * that weren't enabled previously.
> + */
> intel_pre_plane_update(state, crtc);
>
> if (!old_crtc_state->hw.active)
> continue;
>
> intel_crtc_disable_planes(state, crtc);
> +
> + disable_pipes |= BIT(crtc->pipe);
> }
>
> /* Only disable port sync and MST slaves */
> for_each_oldnew_intel_crtc_in_state(state, crtc, old_crtc_state,
> new_crtc_state, i) {
> - if (!intel_crtc_needs_modeset(new_crtc_state))
> - continue;
> -
> - if (!old_crtc_state->hw.active)
> + if ((disable_pipes & BIT(crtc->pipe)) == 0)
> continue;
>
> /* In case of Transcoder port Sync master slave CRTCs can be
> @@ -6814,22 +6818,23 @@ static void intel_commit_modeset_disables(struct
> intel_atomic_state *state)
>
> intel_old_crtc_state_disables(state, old_crtc_state,
> new_crtc_state, crtc);
> - handled |= BIT(crtc->pipe);
> +
> + disable_pipes &= ~BIT(crtc->pipe);
> }
>
> /* Disable everything else left on */
> for_each_oldnew_intel_crtc_in_state(state, crtc, old_crtc_state,
> new_crtc_state, i) {
> - if (!intel_crtc_needs_modeset(new_crtc_state) ||
> - (handled & BIT(crtc->pipe)))
> - continue;
> -
> - if (!old_crtc_state->hw.active)
> + if ((disable_pipes & BIT(crtc->pipe)) == 0)
> continue;
>
> intel_old_crtc_state_disables(state, old_crtc_state,
> new_crtc_state, crtc);
> +
> + disable_pipes &= ~BIT(crtc->pipe);
> }
> +
> + drm_WARN_ON(&i915->drm, disable_pipes);
> }
>
> static void intel_commit_modeset_enables(struct intel_atomic_state *state)
> --
> 2.43.0
>
