linux-kernel - [PATCH v3 2/2] drm/sun4i: Use CRTC size instead of PRIMARY plane size as mixer frame.

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Date:   Wed,  1 Jan 2020 22:47:50 +0200
From:   roman.stratiienko@...ballogic.com
To:     mripard@...nel.org, dri-devel@...ts.freedesktop.org,
        linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org,
        jernej.skrabec@...l.net
Cc:     Roman Stratiienko <roman.stratiienko@...ballogic.com>
Subject: [PATCH v3 2/2] drm/sun4i: Use CRTC size instead of PRIMARY plane size as mixer frame.

From: Roman Stratiienko <roman.stratiienko@...ballogic.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.

Fixes: 5bb5f5dafa1a ("drm/sun4i: Reorganize UI layer code in DE2")
Signed-off-by: Roman Stratiienko <roman.stratiienko@...ballogic.com>
---
v2:
- Split commit in 2 parts
- Add Fixes line to the commit message

v3:
- Address review comments of v2 + removed 3 local varibles
- Change 'Fixes' line

Since I've put more changes from my side, please review/sign again.
---
 drivers/gpu/drm/sun4i/sun8i_mixer.c    | 28 ++++++++++++++++++++++++
 drivers/gpu/drm/sun4i/sun8i_ui_layer.c | 30 --------------------------
 2 files changed, 28 insertions(+), 30 deletions(-)

diff --git a/drivers/gpu/drm/sun4i/sun8i_mixer.c b/drivers/gpu/drm/sun4i/sun8i_mixer.c
index 8b803eb903b8..658cf442c121 100644
--- a/drivers/gpu/drm/sun4i/sun8i_mixer.c
+++ b/drivers/gpu/drm/sun4i/sun8i_mixer.c
@@ -257,6 +257,33 @@ 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 size = SUN8I_MIXER_SIZE(mode->crtc_hdisplay, mode->crtc_vdisplay);
+	struct sun8i_mixer *mixer = engine_to_sun8i_mixer(engine);
+	u32 bld_base = sun8i_blender_base(mixer);
+	u32 val;
+
+	DRM_DEBUG_DRIVER("Mode change, updating global size W: %u H: %u\n",
+			 mode->crtc_hdisplay, mode->crtc_vdisplay);
+	regmap_write(mixer->engine.regs, SUN8I_MIXER_GLOBAL_SIZE, size);
+	regmap_write(mixer->engine.regs,
+		     SUN8I_MIXER_BLEND_OUTSIZE(bld_base), size);
+
+	if (mode->flags & DRM_MODE_FLAG_INTERLACE)
+		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",
+			 val ? "on" : "off");
+}
+
 static void sun8i_mixer_commit(struct sunxi_engine *engine)
 {
 	DRM_DEBUG_DRIVER("Committing changes\n");
@@ -310,6 +337,7 @@ static struct drm_plane **sun8i_layers_init(struct drm_device *drm,
 static const struct sunxi_engine_ops sun8i_engine_ops = {
 	.commit		= sun8i_mixer_commit,
 	.layers_init	= sun8i_layers_init,
+	.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 4343ea9f8cf8..f01ac55191f1 100644
--- a/drivers/gpu/drm/sun4i/sun8i_ui_layer.c
+++ b/drivers/gpu/drm/sun4i/sun8i_ui_layer.c
@@ -120,36 +120,6 @@ 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);
-- 
2.17.1