1 files changed, 2 insertions, 257 deletions

diff --git a/drivers/gpu/drm/i915/display/intel_atomic.c b/drivers/gpu/drm/i915/display/intel_atomic.c
index a9a3f3715279..7cf51dd8c056 100644
--- a/drivers/gpu/drm/i915/display/intel_atomic.c
+++ b/drivers/gpu/drm/i915/display/intel_atomic.c
@@ -265,7 +265,6 @@ intel_crtc_duplicate_state(struct drm_crtc *crtc)
 	crtc_state->update_wm_post = false;
 	crtc_state->fifo_changed = false;
 	crtc_state->preload_luts = false;
-	crtc_state->inherited = false;
 	crtc_state->wm.need_postvbl_update = false;
 	crtc_state->do_async_flip = false;
 	crtc_state->fb_bits = 0;
@@ -311,262 +310,6 @@ intel_crtc_destroy_state(struct drm_crtc *crtc,
 	kfree(crtc_state);
 }
 
-static int intel_atomic_setup_scaler(struct intel_crtc_scaler_state *scaler_state,
-				     int num_scalers_need, struct intel_crtc *intel_crtc,
-				     const char *name, int idx,
-				     struct intel_plane_state *plane_state,
-				     int *scaler_id)
-{
-	struct drm_i915_private *dev_priv = to_i915(intel_crtc->base.dev);
-	int j;
-	u32 mode;
-
-	if (*scaler_id < 0) {
-		/* find a free scaler */
-		for (j = 0; j < intel_crtc->num_scalers; j++) {
-			if (scaler_state->scalers[j].in_use)
-				continue;
-
-			*scaler_id = j;
-			scaler_state->scalers[*scaler_id].in_use = 1;
-			break;
-		}
-	}
-
-	if (drm_WARN(&dev_priv->drm, *scaler_id < 0,
-		     "Cannot find scaler for %s:%d\n", name, idx))
-		return -EINVAL;
-
-	/* set scaler mode */
-	if (plane_state && plane_state->hw.fb &&
-	    plane_state->hw.fb->format->is_yuv &&
-	    plane_state->hw.fb->format->num_planes > 1) {
-		struct intel_plane *plane = to_intel_plane(plane_state->uapi.plane);
-		if (DISPLAY_VER(dev_priv) == 9) {
-			mode = SKL_PS_SCALER_MODE_NV12;
-		} else if (icl_is_hdr_plane(dev_priv, plane->id)) {
-			/*
-			 * On gen11+'s HDR planes we only use the scaler for
-			 * scaling. They have a dedicated chroma upsampler, so
-			 * we don't need the scaler to upsample the UV plane.
-			 */
-			mode = PS_SCALER_MODE_NORMAL;
-		} else {
-			struct intel_plane *linked =
-				plane_state->planar_linked_plane;
-
-			mode = PS_SCALER_MODE_PLANAR;
-
-			if (linked)
-				mode |= PS_PLANE_Y_SEL(linked->id);
-		}
-	} else if (DISPLAY_VER(dev_priv) >= 10) {
-		mode = PS_SCALER_MODE_NORMAL;
-	} else if (num_scalers_need == 1 && intel_crtc->num_scalers > 1) {
-		/*
-		 * when only 1 scaler is in use on a pipe with 2 scalers
-		 * scaler 0 operates in high quality (HQ) mode.
-		 * In this case use scaler 0 to take advantage of HQ mode
-		 */
-		scaler_state->scalers[*scaler_id].in_use = 0;
-		*scaler_id = 0;
-		scaler_state->scalers[0].in_use = 1;
-		mode = SKL_PS_SCALER_MODE_HQ;
-	} else {
-		mode = SKL_PS_SCALER_MODE_DYN;
-	}
-
-	/*
-	 * FIXME: we should also check the scaler factors for pfit, so
-	 * this shouldn't be tied directly to planes.
-	 */
-	if (plane_state && plane_state->hw.fb) {
-		const struct drm_framebuffer *fb = plane_state->hw.fb;
-		const struct drm_rect *src = &plane_state->uapi.src;
-		const struct drm_rect *dst = &plane_state->uapi.dst;
-		int hscale, vscale, max_vscale, max_hscale;
-
-		/*
-		 * FIXME: When two scalers are needed, but only one of
-		 * them needs to downscale, we should make sure that
-		 * the one that needs downscaling support is assigned
-		 * as the first scaler, so we don't reject downscaling
-		 * unnecessarily.
-		 */
-
-		if (DISPLAY_VER(dev_priv) >= 14) {
-			/*
-			 * On versions 14 and up, only the first
-			 * scaler supports a vertical scaling factor
-			 * of more than 1.0, while a horizontal
-			 * scaling factor of 3.0 is supported.
-			 */
-			max_hscale = 0x30000 - 1;
-			if (*scaler_id == 0)
-				max_vscale = 0x30000 - 1;
-			else
-				max_vscale = 0x10000;
-
-		} else if (DISPLAY_VER(dev_priv) >= 10 ||
-			   !intel_format_info_is_yuv_semiplanar(fb->format, fb->modifier)) {
-			max_hscale = 0x30000 - 1;
-			max_vscale = 0x30000 - 1;
-		} else {
-			max_hscale = 0x20000 - 1;
-			max_vscale = 0x20000 - 1;
-		}
-
-		/*
-		 * FIXME: We should change the if-else block above to
-		 * support HQ vs dynamic scaler properly.
-		 */
-
-		/* Check if required scaling is within limits */
-		hscale = drm_rect_calc_hscale(src, dst, 1, max_hscale);
-		vscale = drm_rect_calc_vscale(src, dst, 1, max_vscale);
-
-		if (hscale < 0 || vscale < 0) {
-			drm_dbg_kms(&dev_priv->drm,
-				    "Scaler %d doesn't support required plane scaling\n",
-				    *scaler_id);
-			drm_rect_debug_print("src: ", src, true);
-			drm_rect_debug_print("dst: ", dst, false);
-
-			return -EINVAL;
-		}
-	}
-
-	drm_dbg_kms(&dev_priv->drm, "Attached scaler id %u.%u to %s:%d\n",
-		    intel_crtc->pipe, *scaler_id, name, idx);
-	scaler_state->scalers[*scaler_id].mode = mode;
-
-	return 0;
-}
-
-/**
- * intel_atomic_setup_scalers() - setup scalers for crtc per staged requests
- * @dev_priv: i915 device
- * @intel_crtc: intel crtc
- * @crtc_state: incoming crtc_state to validate and setup scalers
- *
- * This function sets up scalers based on staged scaling requests for
- * a @crtc and its planes. It is called from crtc level check path. If request
- * is a supportable request, it attaches scalers to requested planes and crtc.
- *
- * This function takes into account the current scaler(s) in use by any planes
- * not being part of this atomic state
- *
- *  Returns:
- *         0 - scalers were setup succesfully
- *         error code - otherwise
- */
-int intel_atomic_setup_scalers(struct drm_i915_private *dev_priv,
-			       struct intel_crtc *intel_crtc,
-			       struct intel_crtc_state *crtc_state)
-{
-	struct drm_plane *plane = NULL;
-	struct intel_plane *intel_plane;
-	struct intel_plane_state *plane_state = NULL;
-	struct intel_crtc_scaler_state *scaler_state =
-		&crtc_state->scaler_state;
-	struct drm_atomic_state *drm_state = crtc_state->uapi.state;
-	struct intel_atomic_state *intel_state = to_intel_atomic_state(drm_state);
-	int num_scalers_need;
-	int i;
-
-	num_scalers_need = hweight32(scaler_state->scaler_users);
-
-	/*
-	 * High level flow:
-	 * - staged scaler requests are already in scaler_state->scaler_users
-	 * - check whether staged scaling requests can be supported
-	 * - add planes using scalers that aren't in current transaction
-	 * - assign scalers to requested users
-	 * - as part of plane commit, scalers will be committed
-	 *   (i.e., either attached or detached) to respective planes in hw
-	 * - as part of crtc_commit, scaler will be either attached or detached
-	 *   to crtc in hw
-	 */
-
-	/* fail if required scalers > available scalers */
-	if (num_scalers_need > intel_crtc->num_scalers){
-		drm_dbg_kms(&dev_priv->drm,
-			    "Too many scaling requests %d > %d\n",
-			    num_scalers_need, intel_crtc->num_scalers);
-		return -EINVAL;
-	}
-
-	/* walkthrough scaler_users bits and start assigning scalers */
-	for (i = 0; i < sizeof(scaler_state->scaler_users) * 8; i++) {
-		int *scaler_id;
-		const char *name;
-		int idx, ret;
-
-		/* skip if scaler not required */
-		if (!(scaler_state->scaler_users & (1 << i)))
-			continue;
-
-		if (i == SKL_CRTC_INDEX) {
-			name = "CRTC";
-			idx = intel_crtc->base.base.id;
-
-			/* panel fitter case: assign as a crtc scaler */
-			scaler_id = &scaler_state->scaler_id;
-		} else {
-			name = "PLANE";
-
-			/* plane scaler case: assign as a plane scaler */
-			/* find the plane that set the bit as scaler_user */
-			plane = drm_state->planes[i].ptr;
-
-			/*
-			 * to enable/disable hq mode, add planes that are using scaler
-			 * into this transaction
-			 */
-			if (!plane) {
-				struct drm_plane_state *state;
-
-				/*
-				 * GLK+ scalers don't have a HQ mode so it
-				 * isn't necessary to change between HQ and dyn mode
-				 * on those platforms.
-				 */
-				if (DISPLAY_VER(dev_priv) >= 10)
-					continue;
-
-				plane = drm_plane_from_index(&dev_priv->drm, i);
-				state = drm_atomic_get_plane_state(drm_state, plane);
-				if (IS_ERR(state)) {
-					drm_dbg_kms(&dev_priv->drm,
-						    "Failed to add [PLANE:%d] to drm_state\n",
-						    plane->base.id);
-					return PTR_ERR(state);
-				}
-			}
-
-			intel_plane = to_intel_plane(plane);
-			idx = plane->base.id;
-
-			/* plane on different crtc cannot be a scaler user of this crtc */
-			if (drm_WARN_ON(&dev_priv->drm,
-					intel_plane->pipe != intel_crtc->pipe))
-				continue;
-
-			plane_state = intel_atomic_get_new_plane_state(intel_state,
-								       intel_plane);
-			scaler_id = &plane_state->scaler_id;
-		}
-
-		ret = intel_atomic_setup_scaler(scaler_state, num_scalers_need,
-						intel_crtc, name, idx,
-						plane_state, scaler_id);
-		if (ret < 0)
-			return ret;
-	}
-
-	return 0;
-}
-
 struct drm_atomic_state *
 intel_atomic_state_alloc(struct drm_device *dev)
 {
@@ -599,6 +342,8 @@ void intel_atomic_state_clear(struct drm_atomic_state *s)
 	drm_atomic_state_default_clear(&state->base);
 	intel_atomic_clear_global_state(state);
 
+	/* state->internal not reset on purpose */
+
 	state->dpll_set = state->modeset = false;
 }