Re: [PATCH 5/8] drm/i915: Upscale scaler max scale for NV12

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On 06/19/2017 11:10 PM, Vidya Srinivas wrote:
From: Chandra Konduru <chandra.konduru@xxxxxxxxx>

This patch updates scaler max limit support for NV12

v2: Rebased (me)

Needs rebase again.

Tested-by: Clinton Taylor <clinton.a.taylor@xxxxxxxxx>
Reviewed-by: Clinton Taylor <clinton.a.taylor@xxxxxxxxx>

Signed-off-by: Chandra Konduru <chandra.konduru@xxxxxxxxx>
Signed-off-by: Nabendu Maiti <nabendu.bikash.maiti@xxxxxxxxx>
Signed-off-by: Vidya Srinivas <vidya.srinivas@xxxxxxxxx>
---
  drivers/gpu/drm/i915/intel_display.c | 28 ++++++++++++++++++++--------
  drivers/gpu/drm/i915/intel_drv.h     |  3 ++-
  drivers/gpu/drm/i915/intel_sprite.c  |  3 ++-
  3 files changed, 24 insertions(+), 10 deletions(-)

diff --git a/drivers/gpu/drm/i915/intel_display.c b/drivers/gpu/drm/i915/intel_display.c
index 18559c8..9de836e 100644
--- a/drivers/gpu/drm/i915/intel_display.c
+++ b/drivers/gpu/drm/i915/intel_display.c
@@ -3438,6 +3438,8 @@ static u32 skl_plane_ctl_format(uint32_t pixel_format)
  		return PLANE_CTL_FORMAT_YUV422 | PLANE_CTL_YUV422_UYVY;
  	case DRM_FORMAT_VYUY:
  		return PLANE_CTL_FORMAT_YUV422 | PLANE_CTL_YUV422_VYUY;
+	case DRM_FORMAT_NV12:
+		return PLANE_CTL_FORMAT_NV12;
  	default:
  		MISSING_CASE(pixel_format);
  	}
@@ -4801,7 +4803,8 @@ static void cpt_verify_modeset(struct drm_device *dev, int pipe)
  static int
  skl_update_scaler(struct intel_crtc_state *crtc_state, bool force_detach,
  		  unsigned int scaler_user, int *scaler_id,
-		  int src_w, int src_h, int dst_w, int dst_h)
+		  int src_w, int src_h, int dst_w, int dst_h,
+		  uint32_t pixel_format)
  {
  	struct intel_crtc_scaler_state *scaler_state =
  		&crtc_state->scaler_state;
@@ -4814,7 +4817,8 @@ static void cpt_verify_modeset(struct drm_device *dev, int pipe)
  	 * the 90/270 degree plane rotation cases (to match the
  	 * GTT mapping), hence no need to account for rotation here.
  	 */
-	need_scaling = src_w != dst_w || src_h != dst_h;
+	need_scaling = src_w != dst_w || src_h != dst_h ||
+					(pixel_format == DRM_FORMAT_NV12);
/*
  	 * if plane is being disabled or scaler is no more required or force detach
@@ -4878,7 +4882,7 @@ int skl_update_scaler_crtc(struct intel_crtc_state *state)
  	return skl_update_scaler(state, !state->base.active, SKL_CRTC_INDEX,
  		&state->scaler_state.scaler_id,
  		state->pipe_src_w, state->pipe_src_h,
-		adjusted_mode->crtc_hdisplay, adjusted_mode->crtc_vdisplay);
+		adjusted_mode->crtc_hdisplay, adjusted_mode->crtc_vdisplay, 0);
  }
/**
@@ -4908,7 +4912,8 @@ static int skl_update_scaler_plane(struct intel_crtc_state *crtc_state,
  				drm_rect_width(&plane_state->base.src) >> 16,
  				drm_rect_height(&plane_state->base.src) >> 16,
  				drm_rect_width(&plane_state->base.dst),
-				drm_rect_height(&plane_state->base.dst));
+				drm_rect_height(&plane_state->base.dst),
+				fb ? fb->format->format : 0);
if (ret || plane_state->scaler_id < 0)
  		return ret;
@@ -4934,6 +4939,7 @@ static int skl_update_scaler_plane(struct intel_crtc_state *crtc_state,
  	case DRM_FORMAT_YVYU:
  	case DRM_FORMAT_UYVY:
  	case DRM_FORMAT_VYUY:
+	case DRM_FORMAT_NV12:
  		break;
  	default:
  		DRM_DEBUG_KMS("[PLANE:%d:%s] FB:%d unsupported scaling format 0x%x\n",
@@ -13641,7 +13647,8 @@ static int intel_atomic_commit(struct drm_device *dev,
  }
int
-skl_max_scale(struct intel_crtc *intel_crtc, struct intel_crtc_state *crtc_state)
+skl_max_scale(struct intel_crtc *intel_crtc,
+	struct intel_crtc_state *crtc_state, uint32_t pixel_format)
  {
  	struct drm_i915_private *dev_priv;
  	int max_scale;
@@ -13667,8 +13674,9 @@ static int intel_atomic_commit(struct drm_device *dev,
  	 *            or
  	 *    cdclk/crtc_clock
  	 */
-	max_scale = min((1 << 16) * 3 - 1,
-			(1 << 8) * ((max_dotclk << 8) / crtc_clock));
+	max_scale = min((1 << 16) *
+				(pixel_format == DRM_FORMAT_NV12 ? 2 : 3) - 1,
+				(1 << 8) * ((max_dotclk << 8) / crtc_clock));
return max_scale;
  }
@@ -13689,7 +13697,11 @@ static int intel_atomic_commit(struct drm_device *dev,
  		/* use scaler when colorkey is not required */
  		if (state->ckey.flags == I915_SET_COLORKEY_NONE) {
  			min_scale = 1;
-			max_scale = skl_max_scale(to_intel_crtc(crtc), crtc_state);
+			max_scale = skl_max_scale(to_intel_crtc(crtc),
+						crtc_state,
+						state->base.fb ?
+						state->base.fb->format->format :
+						0);
  		}
  		can_position = true;
  	}
diff --git a/drivers/gpu/drm/i915/intel_drv.h b/drivers/gpu/drm/i915/intel_drv.h
index d93efb4..f6ebe45 100644
--- a/drivers/gpu/drm/i915/intel_drv.h
+++ b/drivers/gpu/drm/i915/intel_drv.h
@@ -1480,7 +1480,8 @@ void intel_mode_from_pipe_config(struct drm_display_mode *mode,
  				 struct intel_crtc_state *pipe_config);
int skl_update_scaler_crtc(struct intel_crtc_state *crtc_state);
-int skl_max_scale(struct intel_crtc *crtc, struct intel_crtc_state *crtc_state);
+int skl_max_scale(struct intel_crtc *crtc, struct intel_crtc_state *crtc_state,
+	uint32_t pixel_format);
static inline u32 intel_plane_ggtt_offset(const struct intel_plane_state *state)
  {
diff --git a/drivers/gpu/drm/i915/intel_sprite.c b/drivers/gpu/drm/i915/intel_sprite.c
index fba8f02..d4665d2 100644
--- a/drivers/gpu/drm/i915/intel_sprite.c
+++ b/drivers/gpu/drm/i915/intel_sprite.c
@@ -823,7 +823,8 @@ static u32 g4x_sprite_ctl(const struct intel_crtc_state *crtc_state,
  		if (state->ckey.flags == I915_SET_COLORKEY_NONE) {
  			can_scale = 1;
  			min_scale = 1;
-			max_scale = skl_max_scale(crtc, crtc_state);
+			max_scale = skl_max_scale(crtc, crtc_state,
+							fb->format->format);
  		} else {
  			can_scale = 0;
  			min_scale = DRM_PLANE_HELPER_NO_SCALING;

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