[Intel-gfx] [PATCH 3/8] drm/i915: Introduce scaled_planes bitmask

[Ville Syrjala]

From: Ville Syrjälä <ville.syrjala at linux.intel.com>

Add another plane bitmask, this time tracking which planes are
scaled. This is going to be useful in ILK watermark computations,
and skl+ pipe scaler assignments.

Signed-off-by: Ville Syrjälä <ville.syrjala at linux.intel.com>
---
 drivers/gpu/drm/i915/display/intel_atomic_plane.c  | 5 +++++
 drivers/gpu/drm/i915/display/intel_display_types.h | 1 +
 2 files changed, 6 insertions(+)

diff --git a/drivers/gpu/drm/i915/display/intel_atomic_plane.c b/drivers/gpu/drm/i915/display/intel_atomic_plane.c
index bba2f105b7dd..79720bd5a485 100644
--- a/drivers/gpu/drm/i915/display/intel_atomic_plane.c
+++ b/drivers/gpu/drm/i915/display/intel_atomic_plane.c
@@ -323,6 +323,7 @@ void intel_plane_set_invisible(struct intel_crtc_state *crtc_state,
 	struct intel_plane *plane = to_intel_plane(plane_state->uapi.plane);
 
 	crtc_state->active_planes &= ~BIT(plane->id);
+	crtc_state->scaled_planes &= ~BIT(plane->id);
 	crtc_state->nv12_planes &= ~BIT(plane->id);
 	crtc_state->c8_planes &= ~BIT(plane->id);
 	crtc_state->data_rate[plane->id] = 0;
@@ -536,6 +537,10 @@ int intel_plane_atomic_check_with_state(const struct intel_crtc_state *old_crtc_
 	if (new_plane_state->uapi.visible)
 		new_crtc_state->active_planes |= BIT(plane->id);
 
+	if (new_plane_state->uapi.visible &&
+	    intel_plane_is_scaled(new_plane_state))
+		new_crtc_state->scaled_planes |= BIT(plane->id);
+
 	if (new_plane_state->uapi.visible &&
 	    intel_format_info_is_yuv_semiplanar(fb->format, fb->modifier))
 		new_crtc_state->nv12_planes |= BIT(plane->id);
diff --git a/drivers/gpu/drm/i915/display/intel_display_types.h b/drivers/gpu/drm/i915/display/intel_display_types.h
index 60e15226a8cb..7a5c1e334449 100644
--- a/drivers/gpu/drm/i915/display/intel_display_types.h
+++ b/drivers/gpu/drm/i915/display/intel_display_types.h
@@ -1168,6 +1168,7 @@ struct intel_crtc_state {
 
 	/* bitmask of actually visible planes (enum plane_id) */
 	u8 active_planes;
+	u8 scaled_planes;
 	u8 nv12_planes;
 	u8 c8_planes;
 
-- 
2.34.1