drm/i915: Rework plane readout.

All non-primary planes get disabled during hw readout,
this reduces complexity and means not having to do some plane
visibility checks during the first commit.

Signed-off-by: Maarten Lankhorst <maarten.lankhorst@linux.intel.com>
Reviewed-by: Daniel Stone <daniels@collabora.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>

diff --git a/drivers/gpu/drm/i915/intel_atomic.c b/drivers/gpu/drm/i915/intel_atomic.c
index b92b858..dcf4fb4 100644 (file)
--- a/drivers/gpu/drm/i915/intel_atomic.c
+++ b/drivers/gpu/drm/i915/intel_atomic.c
@@ -98,13 +98,6 @@ int intel_atomic_check(struct drm_device *dev,
                return -EINVAL;
        }
 
-       if (crtc_state &&
-           crtc_state->quirks & PIPE_CONFIG_QUIRK_INITIAL_PLANES) {
-               ret = drm_atomic_add_affected_planes(state, &nuclear_crtc->base);
-               if (ret)
-                       return ret;
-       }
-
        ret = drm_atomic_helper_check_planes(dev, state);
        if (ret)
                return ret;

diff --git a/drivers/gpu/drm/i915/intel_display.c b/drivers/gpu/drm/i915/intel_display.c
index b0a3120..ba2c933 100644 (file)
--- a/drivers/gpu/drm/i915/intel_display.c
+++ b/drivers/gpu/drm/i915/intel_display.c
@@ -11781,34 +11781,6 @@ static bool check_encoder_cloning(struct drm_atomic_state *state,
        return true;
 }
 
-static void intel_crtc_check_initial_planes(struct drm_crtc *crtc,
-                                           struct drm_crtc_state *crtc_state)
-{
-       struct intel_crtc_state *pipe_config =
-               to_intel_crtc_state(crtc_state);
-       struct drm_plane *p;
-       unsigned visible_mask = 0;
-
-       drm_for_each_plane_mask(p, crtc->dev, crtc_state->plane_mask) {
-               struct drm_plane_state *plane_state =
-                       drm_atomic_get_existing_plane_state(crtc_state->state, p);
-
-               if (WARN_ON(!plane_state))
-                       continue;
-
-               if (!plane_state->fb)
-                       crtc_state->plane_mask &=
-                               ~(1 << drm_plane_index(p));
-               else if (to_intel_plane_state(plane_state)->visible)
-                       visible_mask |= 1 << drm_plane_index(p);
-       }
-
-       if (!visible_mask)
-               return;
-
-       pipe_config->quirks &= ~PIPE_CONFIG_QUIRK_INITIAL_PLANES;
-}
-
 static int intel_crtc_atomic_check(struct drm_crtc *crtc,
                                   struct drm_crtc_state *crtc_state)
 {
@@ -11830,10 +11802,6 @@ static int intel_crtc_atomic_check(struct drm_crtc *crtc,
                "[CRTC:%i] mismatch between state->active(%i) and crtc->active(%i)\n",
                idx, crtc->state->active, intel_crtc->active);
 
-       /* plane mask is fixed up after all initial planes are calculated */
-       if (pipe_config->quirks & PIPE_CONFIG_QUIRK_INITIAL_PLANES)
-               intel_crtc_check_initial_planes(crtc, crtc_state);
-
        if (mode_changed && !crtc_state->active)
                intel_crtc->atomic.update_wm_post = true;
 
@@ -13186,19 +13154,6 @@ intel_modeset_compute_config(struct drm_atomic_state *state)
                        continue;
                }
 
-               if (pipe_config->quirks & PIPE_CONFIG_QUIRK_INITIAL_PLANES) {
-                       ret = drm_atomic_add_affected_planes(state, crtc);
-                       if (ret)
-                               return ret;
-
-                       /*
-                        * We ought to handle i915.fastboot here.
-                        * If no modeset is required and the primary plane has
-                        * a fb, update the members of crtc_state as needed,
-                        * and run the necessary updates during vblank evasion.
-                        */
-               }
-
                modeset = needs_modeset(crtc_state);
                recalc = pipe_config->quirks & PIPE_CONFIG_QUIRK_INHERITED_MODE;
 
@@ -15456,47 +15411,22 @@ static void readout_plane_state(struct intel_crtc *crtc,
                                struct intel_crtc_state *crtc_state)
 {
        struct intel_plane *p;
-       struct drm_plane_state *drm_plane_state;
+       struct intel_plane_state *plane_state;
        bool active = crtc_state->base.active;
 
-       if (active) {
-               crtc_state->quirks |= PIPE_CONFIG_QUIRK_INITIAL_PLANES;
-
-               /* apply to previous sw state too */
-               to_intel_crtc_state(crtc->base.state)->quirks |=
-                       PIPE_CONFIG_QUIRK_INITIAL_PLANES;
-       }
-
        for_each_intel_plane(crtc->base.dev, p) {
-               bool visible = active;
-
                if (crtc->pipe != p->pipe)
                        continue;
 
-               drm_plane_state = p->base.state;
-
-               /* Plane scaler state is not touched here. The first atomic
-                * commit will restore all plane scalers to its old state.
-                */
+               plane_state = to_intel_plane_state(p->base.state);
 
-               if (active && p->base.type == DRM_PLANE_TYPE_PRIMARY) {
-                       visible = primary_get_hw_state(crtc);
-                       to_intel_plane_state(drm_plane_state)->visible = visible;
-               } else {
-                       /*
-                        * unknown state, assume it's off to force a transition
-                        * to on when calculating state changes.
-                        */
-                       to_intel_plane_state(drm_plane_state)->visible = false;
-               }
+               if (p->base.type == DRM_PLANE_TYPE_PRIMARY)
+                       plane_state->visible = primary_get_hw_state(crtc);
+               else {
+                       if (active)
+                               p->disable_plane(&p->base, &crtc->base);
 
-               if (visible) {
-                       crtc_state->base.plane_mask |=
-                               1 << drm_plane_index(&p->base);
-               } else if (crtc_state->base.state) {
-                       /* Make this unconditional for atomic hw readout. */
-                       crtc_state->base.plane_mask &=
-                               ~(1 << drm_plane_index(&p->base));
+                       plane_state->visible = false;
                }
        }
 }

diff --git a/drivers/gpu/drm/i915/intel_drv.h b/drivers/gpu/drm/i915/intel_drv.h
index 09e3581..2c23900 100644 (file)
--- a/drivers/gpu/drm/i915/intel_drv.h
+++ b/drivers/gpu/drm/i915/intel_drv.h
@@ -341,7 +341,6 @@ struct intel_crtc_state {
         */
 #define PIPE_CONFIG_QUIRK_MODE_SYNC_FLAGS      (1<<0) /* unreliable sync mode.flags */
 #define PIPE_CONFIG_QUIRK_INHERITED_MODE       (1<<1) /* mode inherited from firmware */
-#define PIPE_CONFIG_QUIRK_INITIAL_PLANES       (1<<2) /* planes are in unknown state */
        unsigned long quirks;
 
        /* Pipe source size (ie. panel fitter input size)