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Subject[PATCH 04/17] drm/sun4i: Use values calculated by atomic check
Date
Now that we have properly clipped coordinates in plane state structure,
use them.

This also fixes bug where source x and y were adjusted for negative
value, but width and height weren't. It wasn't discovered because
primary plane usually doesn't have negative coordinates.

Signed-off-by: Jernej Skrabec <jernej.skrabec@siol.net>
---
drivers/gpu/drm/sun4i/sun8i_layer.c | 5 ++++
drivers/gpu/drm/sun4i/sun8i_mixer.c | 52 ++++++++++++++++---------------------
2 files changed, 27 insertions(+), 30 deletions(-)

diff --git a/drivers/gpu/drm/sun4i/sun8i_layer.c b/drivers/gpu/drm/sun4i/sun8i_layer.c
index 54739e12311d..511d2f8afef6 100644
--- a/drivers/gpu/drm/sun4i/sun8i_layer.c
+++ b/drivers/gpu/drm/sun4i/sun8i_layer.c
@@ -68,6 +68,11 @@ static void sun8i_mixer_layer_atomic_update(struct drm_plane *plane,
struct sun8i_layer *layer = plane_to_sun8i_layer(plane);
struct sun8i_mixer *mixer = layer->mixer;

+ if (!plane->state->visible) {
+ sun8i_mixer_layer_enable(mixer, layer->id, false);
+ return;
+ }
+
sun8i_mixer_update_layer_coord(mixer, layer->id, plane);
sun8i_mixer_update_layer_formats(mixer, layer->id, plane);
sun8i_mixer_update_layer_buffer(mixer, layer->id, plane);
diff --git a/drivers/gpu/drm/sun4i/sun8i_mixer.c b/drivers/gpu/drm/sun4i/sun8i_mixer.c
index 37eb5f6f8ee8..6aa3240186c1 100644
--- a/drivers/gpu/drm/sun4i/sun8i_mixer.c
+++ b/drivers/gpu/drm/sun4i/sun8i_mixer.c
@@ -91,28 +91,34 @@ int sun8i_mixer_update_layer_coord(struct sun8i_mixer *mixer,
{
struct drm_plane_state *state = plane->state;
struct drm_framebuffer *fb = state->fb;
+ u32 width, height, size;

DRM_DEBUG_DRIVER("Updating layer %d\n", layer);

+ /*
+ * Same source and destination width and height are guaranteed
+ * by atomic check function.
+ */
+ width = drm_rect_width(&state->dst);
+ height = drm_rect_height(&state->dst);
+ size = SUN8I_MIXER_SIZE(width, height);
+
if (plane->type == DRM_PLANE_TYPE_PRIMARY) {
DRM_DEBUG_DRIVER("Primary layer, updating global size W: %u H: %u\n",
- state->crtc_w, state->crtc_h);
- regmap_write(mixer->engine.regs, SUN8I_MIXER_GLOBAL_SIZE,
- SUN8I_MIXER_SIZE(state->crtc_w,
- state->crtc_h));
+ width, height);
+ regmap_write(mixer->engine.regs,
+ SUN8I_MIXER_GLOBAL_SIZE,
+ size);
DRM_DEBUG_DRIVER("Updating blender size\n");
regmap_write(mixer->engine.regs,
SUN8I_MIXER_BLEND_ATTR_INSIZE(layer),
- SUN8I_MIXER_SIZE(state->crtc_w,
- state->crtc_h));
+ size);
regmap_write(mixer->engine.regs, SUN8I_MIXER_BLEND_OUTSIZE,
- SUN8I_MIXER_SIZE(state->crtc_w,
- state->crtc_h));
+ size);
DRM_DEBUG_DRIVER("Updating channel size\n");
regmap_write(mixer->engine.regs,
SUN8I_MIXER_CHAN_UI_OVL_SIZE(layer),
- SUN8I_MIXER_SIZE(state->crtc_w,
- state->crtc_h));
+ size);
}

/* Set the line width */
@@ -122,18 +128,17 @@ int sun8i_mixer_update_layer_coord(struct sun8i_mixer *mixer,
fb->pitches[0]);

/* Set height and width */
- DRM_DEBUG_DRIVER("Layer size W: %u H: %u\n",
- state->crtc_w, state->crtc_h);
+ DRM_DEBUG_DRIVER("Layer size W: %u H: %u\n", width, height);
regmap_write(mixer->engine.regs,
SUN8I_MIXER_CHAN_UI_LAYER_SIZE(layer, 0),
- SUN8I_MIXER_SIZE(state->crtc_w, state->crtc_h));
+ size);

/* Set base coordinates */
DRM_DEBUG_DRIVER("Layer coordinates X: %d Y: %d\n",
- state->crtc_x, state->crtc_y);
+ state->dst.x1, state->dst.y1);
regmap_write(mixer->engine.regs,
SUN8I_MIXER_BLEND_ATTR_COORD(layer),
- SUN8I_MIXER_COORD(state->crtc_x, state->crtc_y));
+ SUN8I_MIXER_COORD(state->dst.x1, state->dst.y1));

return 0;
}
@@ -193,21 +198,8 @@ int sun8i_mixer_update_layer_buffer(struct sun8i_mixer *mixer,
paddr = gem->paddr + fb->offsets[0];

/* Fixup framebuffer address for src coordinates */
- paddr += (state->src_x >> 16) * bpp;
- paddr += (state->src_y >> 16) * fb->pitches[0];
-
- /*
- * The hardware cannot correctly deal with negative crtc
- * coordinates, the display is cropped to the requested size,
- * but the display content is not moved.
- * Manually move the display content by fixup the framebuffer
- * address when crtc_x or crtc_y is negative, like what we
- * have did for src_x and src_y.
- */
- if (state->crtc_x < 0)
- paddr += -state->crtc_x * bpp;
- if (state->crtc_y < 0)
- paddr += -state->crtc_y * fb->pitches[0];
+ paddr += (state->src.x1 >> 16) * bpp;
+ paddr += (state->src.y1 >> 16) * fb->pitches[0];

DRM_DEBUG_DRIVER("Setting buffer address to %pad\n", &paddr);

--
2.15.0
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