[RFC 2/4] drm/sun4i: Use CRTC size instead of PRIMARY plane size as mixer frame.

[roman.stratiienko@globallogic.com]

From: Roman Stratiienko <roman.stratiienko@globallogic.com>

According to DRM documentation the only difference between PRIMARY
and OVERLAY plane is that each CRTC must have PRIMARY plane and
OVERLAY are optional.

Allow PRIMARY plane to have dimension different from full-screen.

Signed-off-by: Roman Stratiienko <roman.stratiienko@globallogic.com>
---
 drivers/gpu/drm/sun4i/sun4i_crtc.c     |  4 +++
 drivers/gpu/drm/sun4i/sun8i_mixer.c    | 35 ++++++++++++++++++++++++++
 drivers/gpu/drm/sun4i/sun8i_ui_layer.c | 30 ----------------------
 drivers/gpu/drm/sun4i/sunxi_engine.h   |  8 ++++++
 4 files changed, 47 insertions(+), 30 deletions(-)

diff --git a/drivers/gpu/drm/sun4i/sun4i_crtc.c b/drivers/gpu/drm/sun4i/sun4i_crtc.c
index 3a153648b369..156ea8f19d7d 100644
--- a/drivers/gpu/drm/sun4i/sun4i_crtc.c
+++ b/drivers/gpu/drm/sun4i/sun4i_crtc.c
@@ -139,8 +139,12 @@ static void sun4i_crtc_mode_set_nofb(struct drm_crtc *crtc)
 	struct drm_display_mode *mode = &crtc->state->adjusted_mode;
 	struct drm_encoder *encoder = sun4i_crtc_get_encoder(crtc);
 	struct sun4i_crtc *scrtc = drm_crtc_to_sun4i_crtc(crtc);
+	struct sunxi_engine *engine = scrtc->engine;
 
 	sun4i_tcon_mode_set(scrtc->tcon, encoder, mode);
+
+	if (engine->ops->mode_set)
+		engine->ops->mode_set(engine, mode);
 }
 
 static const struct drm_crtc_helper_funcs sun4i_crtc_helper_funcs = {
diff --git a/drivers/gpu/drm/sun4i/sun8i_mixer.c b/drivers/gpu/drm/sun4i/sun8i_mixer.c
index eea4813602b7..bb9a665fd053 100644
--- a/drivers/gpu/drm/sun4i/sun8i_mixer.c
+++ b/drivers/gpu/drm/sun4i/sun8i_mixer.c
@@ -257,6 +257,40 @@ const struct de2_fmt_info *sun8i_mixer_format_info(u32 format)
 	return NULL;
 }
 
+static void sun8i_mode_set(struct sunxi_engine *engine,
+			   struct drm_display_mode *mode)
+{
+	u32 dst_w = mode->crtc_hdisplay;
+	u32 dst_h = mode->crtc_vdisplay;
+	u32 outsize = SUN8I_MIXER_SIZE(dst_w, dst_h);
+	bool interlaced = false;
+	u32 val;
+	struct sun8i_mixer *mixer = engine_to_sun8i_mixer(engine);
+	u32 bld_base = sun8i_blender_base(mixer);
+
+	DRM_DEBUG_DRIVER("Mode change, updating global size W: %u H: %u\n",
+			 dst_w, dst_h);
+	regmap_write(mixer->engine.regs,
+		     SUN8I_MIXER_GLOBAL_SIZE,
+		     outsize);
+	regmap_write(mixer->engine.regs,
+		     SUN8I_MIXER_BLEND_OUTSIZE(bld_base), outsize);
+
+	interlaced = mode->flags & DRM_MODE_FLAG_INTERLACE;
+
+	if (interlaced)
+		val = SUN8I_MIXER_BLEND_OUTCTL_INTERLACED;
+	else
+		val = 0;
+
+	regmap_update_bits(mixer->engine.regs,
+			   SUN8I_MIXER_BLEND_OUTCTL(bld_base),
+			   SUN8I_MIXER_BLEND_OUTCTL_INTERLACED,
+			   val);
+	DRM_DEBUG_DRIVER("Switching display mixer interlaced mode %s\n",
+			 interlaced ? "on" : "off");
+}
+
 static void sun8i_atomic_begin(struct sunxi_engine *engine,
 			       struct drm_crtc_state *old_state)
 {
@@ -325,6 +359,7 @@ static const struct sunxi_engine_ops sun8i_engine_ops = {
 	.commit		= sun8i_mixer_commit,
 	.layers_init	= sun8i_layers_init,
 	.atomic_begin	= sun8i_atomic_begin,
+	.mode_set	= sun8i_mode_set,
 };
 
 static struct regmap_config sun8i_mixer_regmap_config = {
diff --git a/drivers/gpu/drm/sun4i/sun8i_ui_layer.c b/drivers/gpu/drm/sun4i/sun8i_ui_layer.c
index c87fd842918e..893076716070 100644
--- a/drivers/gpu/drm/sun4i/sun8i_ui_layer.c
+++ b/drivers/gpu/drm/sun4i/sun8i_ui_layer.c
@@ -99,36 +99,6 @@ static int sun8i_ui_layer_update_coord(struct sun8i_mixer *mixer, int channel,
 	insize = SUN8I_MIXER_SIZE(src_w, src_h);
 	outsize = SUN8I_MIXER_SIZE(dst_w, dst_h);
 
-	if (plane->type == DRM_PLANE_TYPE_PRIMARY) {
-		bool interlaced = false;
-		u32 val;
-
-		DRM_DEBUG_DRIVER("Primary layer, updating global size W: %u H: %u\n",
-				 dst_w, dst_h);
-		regmap_write(mixer->engine.regs,
-			     SUN8I_MIXER_GLOBAL_SIZE,
-			     outsize);
-		regmap_write(mixer->engine.regs,
-			     SUN8I_MIXER_BLEND_OUTSIZE(bld_base), outsize);
-
-		if (state->crtc)
-			interlaced = state->crtc->state->adjusted_mode.flags
-				& DRM_MODE_FLAG_INTERLACE;
-
-		if (interlaced)
-			val = SUN8I_MIXER_BLEND_OUTCTL_INTERLACED;
-		else
-			val = 0;
-
-		regmap_update_bits(mixer->engine.regs,
-				   SUN8I_MIXER_BLEND_OUTCTL(bld_base),
-				   SUN8I_MIXER_BLEND_OUTCTL_INTERLACED,
-				   val);
-
-		DRM_DEBUG_DRIVER("Switching display mixer interlaced mode %s\n",
-				 interlaced ? "on" : "off");
-	}
-
 	/* Set height and width */
 	DRM_DEBUG_DRIVER("Layer source offset X: %d Y: %d\n",
 			 state->src.x1 >> 16, state->src.y1 >> 16);
diff --git a/drivers/gpu/drm/sun4i/sunxi_engine.h b/drivers/gpu/drm/sun4i/sunxi_engine.h
index 548710a936d5..9783c112d512 100644
--- a/drivers/gpu/drm/sun4i/sunxi_engine.h
+++ b/drivers/gpu/drm/sun4i/sunxi_engine.h
@@ -108,6 +108,14 @@ struct sunxi_engine_ops {
 	 * This function is optional.
 	 */
 	void (*vblank_quirk)(struct sunxi_engine *engine);
+
+	/**
+	 * @mode_set:
+	 *
+	 * This function is optional.
+	 */
+	void (*mode_set)(struct sunxi_engine *engine,
+			 struct drm_display_mode *mode);
 };
 
 /**
-- 
2.17.1