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Message-ID: <20190110151020.30468-4-peda@axentia.se>
Date: Thu, 10 Jan 2019 15:10:44 +0000
From: Peter Rosin <peda@...ntia.se>
To: "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>
CC: Peter Rosin <peda@...ntia.se>,
Boris Brezillon <boris.brezillon@...tlin.com>,
David Airlie <airlied@...ux.ie>,
Nicolas Ferre <nicolas.ferre@...rochip.com>,
Alexandre Belloni <alexandre.belloni@...tlin.com>,
"dri-devel@...ts.freedesktop.org" <dri-devel@...ts.freedesktop.org>,
"linux-arm-kernel@...ts.infradead.org"
<linux-arm-kernel@...ts.infradead.org>
Subject: [PATCH 3/4] drm/atmel-hlcdc: fix clipping of planes
With the help from drm_atomic_helper_check_plane_state function, clipping
now handles planes to be partially or totally off-screen. The plane is
disabled if it is not visible.
Signed-off-by: Peter Rosin <peda@...ntia.se>
---
drivers/gpu/drm/atmel-hlcdc/atmel_hlcdc_plane.c | 162 +++++++++---------------
1 file changed, 61 insertions(+), 101 deletions(-)
diff --git a/drivers/gpu/drm/atmel-hlcdc/atmel_hlcdc_plane.c b/drivers/gpu/drm/atmel-hlcdc/atmel_hlcdc_plane.c
index d6f93f029020..05519e8c6586 100644
--- a/drivers/gpu/drm/atmel-hlcdc/atmel_hlcdc_plane.c
+++ b/drivers/gpu/drm/atmel-hlcdc/atmel_hlcdc_plane.c
@@ -548,7 +548,8 @@ atmel_hlcdc_plane_prepare_disc_area(struct drm_crtc_state *c_state)
ovl_state = drm_plane_state_to_atmel_hlcdc_plane_state(ovl_s);
- if (!ovl_s->fb ||
+ if (!ovl_s->visible ||
+ !ovl_s->fb ||
ovl_s->fb->format->has_alpha ||
ovl_s->alpha != DRM_BLEND_ALPHA_OPAQUE)
continue;
@@ -600,15 +601,10 @@ static int atmel_hlcdc_plane_atomic_check(struct drm_plane *p,
struct drm_framebuffer *fb = state->base.fb;
const struct drm_display_mode *mode;
struct drm_crtc_state *crtc_state;
- unsigned int patched_crtc_w;
- unsigned int patched_crtc_h;
- unsigned int patched_src_w;
- unsigned int patched_src_h;
unsigned int tmp;
- int x_offset = 0;
- int y_offset = 0;
int hsub = 1;
int vsub = 1;
+ int ret;
int i;
if (!state->base.crtc || !fb)
@@ -617,14 +613,21 @@ static int atmel_hlcdc_plane_atomic_check(struct drm_plane *p,
crtc_state = drm_atomic_get_existing_crtc_state(s->state, s->crtc);
mode = &crtc_state->adjusted_mode;
- state->src_x = s->src_x;
- state->src_y = s->src_y;
- state->src_h = s->src_h;
- state->src_w = s->src_w;
- state->crtc_x = s->crtc_x;
- state->crtc_y = s->crtc_y;
- state->crtc_h = s->crtc_h;
- state->crtc_w = s->crtc_w;
+ ret = drm_atomic_helper_check_plane_state(s, crtc_state,
+ (1 << 16) / 2048,
+ INT_MAX, true, true);
+ if (ret || !s->visible)
+ return ret;
+
+ state->src_x = s->src.x1;
+ state->src_y = s->src.y1;
+ state->src_w = drm_rect_width(&s->src);
+ state->src_h = drm_rect_height(&s->src);
+ state->crtc_x = s->dst.x1;
+ state->crtc_y = s->dst.y1;
+ state->crtc_w = drm_rect_width(&s->dst);
+ state->crtc_h = drm_rect_height(&s->dst);
+
if ((state->src_x | state->src_y | state->src_w | state->src_h) &
SUBPIXEL_MASK)
return -EINVAL;
@@ -638,42 +641,6 @@ static int atmel_hlcdc_plane_atomic_check(struct drm_plane *p,
if (state->nplanes > ATMEL_HLCDC_LAYER_MAX_PLANES)
return -EINVAL;
- /*
- * Swap width and size in case of 90 or 270 degrees rotation
- */
- if (drm_rotation_90_or_270(state->base.rotation)) {
- tmp = state->src_w;
- state->src_w = state->src_h;
- state->src_h = tmp;
- }
-
- if (state->crtc_x + state->crtc_w > mode->hdisplay)
- patched_crtc_w = mode->hdisplay - state->crtc_x;
- else
- patched_crtc_w = state->crtc_w;
-
- if (state->crtc_x < 0) {
- patched_crtc_w += state->crtc_x;
- x_offset = -state->crtc_x;
- state->crtc_x = 0;
- }
-
- if (state->crtc_y + state->crtc_h > mode->vdisplay)
- patched_crtc_h = mode->vdisplay - state->crtc_y;
- else
- patched_crtc_h = state->crtc_h;
-
- if (state->crtc_y < 0) {
- patched_crtc_h += state->crtc_y;
- y_offset = -state->crtc_y;
- state->crtc_y = 0;
- }
-
- patched_src_w = DIV_ROUND_CLOSEST(patched_crtc_w * state->src_w,
- state->crtc_w);
- patched_src_h = DIV_ROUND_CLOSEST(patched_crtc_h * state->src_h,
- state->crtc_h);
-
hsub = drm_format_horz_chroma_subsampling(fb->format->format);
vsub = drm_format_vert_chroma_subsampling(fb->format->format);
@@ -688,41 +655,38 @@ static int atmel_hlcdc_plane_atomic_check(struct drm_plane *p,
switch (state->base.rotation & DRM_MODE_ROTATE_MASK) {
case DRM_MODE_ROTATE_90:
- offset = ((y_offset + state->src_y) / ydiv) *
+ offset = (state->src_y / ydiv) *
fb->pitches[i];
- offset += ((x_offset + state->src_x + patched_src_h - 1) /
+ offset += ((state->src_x + state->src_w - 1) /
xdiv) * state->bpp[i];
- state->xstride[i] = -(((patched_src_w - 1) / ydiv) *
+ state->xstride[i] = -(((state->src_h - 1) / ydiv) *
fb->pitches[i]) -
(2 * state->bpp[i]);
state->pstride[i] = fb->pitches[i] - state->bpp[i];
break;
case DRM_MODE_ROTATE_180:
- offset = ((y_offset + state->src_y + patched_src_h - 1) /
+ offset = ((state->src_y + state->src_h - 1) /
ydiv) * fb->pitches[i];
- offset += ((x_offset + state->src_x + patched_src_w - 1) /
+ offset += ((state->src_x + state->src_w - 1) /
xdiv) * state->bpp[i];
- state->xstride[i] = ((((patched_src_w - 1) / xdiv) - 1) *
+ state->xstride[i] = ((((state->src_w - 1) / xdiv) - 1) *
state->bpp[i]) - fb->pitches[i];
state->pstride[i] = -2 * state->bpp[i];
break;
case DRM_MODE_ROTATE_270:
- offset = ((y_offset + state->src_y + patched_src_w - 1) /
+ offset = ((state->src_y + state->src_h - 1) /
ydiv) * fb->pitches[i];
- offset += ((x_offset + state->src_x) / xdiv) *
- state->bpp[i];
- state->xstride[i] = ((patched_src_w - 1) / ydiv) *
+ offset += (state->src_x / xdiv) * state->bpp[i];
+ state->xstride[i] = ((state->src_h - 1) / ydiv) *
fb->pitches[i];
state->pstride[i] = -fb->pitches[i] - state->bpp[i];
break;
case DRM_MODE_ROTATE_0:
default:
- offset = ((y_offset + state->src_y) / ydiv) *
- fb->pitches[i];
- offset += ((x_offset + state->src_x) / xdiv) *
- state->bpp[i];
+ offset = (state->src_y / ydiv) * fb->pitches[i];
+ offset += (state->src_x / xdiv) * state->bpp[i];
state->xstride[i] = fb->pitches[i] -
- ((patched_src_w / xdiv) *
+ ((state->src_w / xdiv) *
state->bpp[i]);
state->pstride[i] = 0;
break;
@@ -731,35 +695,45 @@ static int atmel_hlcdc_plane_atomic_check(struct drm_plane *p,
state->offsets[i] = offset + fb->offsets[i];
}
- state->src_w = patched_src_w;
- state->src_h = patched_src_h;
- state->crtc_w = patched_crtc_w;
- state->crtc_h = patched_crtc_h;
+ /*
+ * Swap width and size in case of 90 or 270 degrees rotation
+ */
+ if (drm_rotation_90_or_270(state->base.rotation)) {
+ tmp = state->src_w;
+ state->src_w = state->src_h;
+ state->src_h = tmp;
+ }
if (!desc->layout.size &&
(mode->hdisplay != state->crtc_w ||
mode->vdisplay != state->crtc_h))
return -EINVAL;
- if (desc->max_height && state->crtc_h > desc->max_height)
- return -EINVAL;
-
- if (desc->max_width && state->crtc_w > desc->max_width)
- return -EINVAL;
-
if ((state->crtc_h != state->src_h || state->crtc_w != state->src_w) &&
(!desc->layout.memsize ||
state->base.fb->format->has_alpha))
return -EINVAL;
- if (state->crtc_x < 0 || state->crtc_y < 0)
- return -EINVAL;
+ return 0;
+}
- if (state->crtc_w + state->crtc_x > mode->hdisplay ||
- state->crtc_h + state->crtc_y > mode->vdisplay)
- return -EINVAL;
+static void atmel_hlcdc_plane_atomic_disable(struct drm_plane *p,
+ struct drm_plane_state *old_state)
+{
+ struct atmel_hlcdc_plane *plane = drm_plane_to_atmel_hlcdc_plane(p);
- return 0;
+ /* Disable interrupts */
+ atmel_hlcdc_layer_write_reg(&plane->layer, ATMEL_HLCDC_LAYER_IDR,
+ 0xffffffff);
+
+ /* Disable the layer */
+ atmel_hlcdc_layer_write_reg(&plane->layer, ATMEL_HLCDC_LAYER_CHDR,
+ ATMEL_HLCDC_LAYER_RST |
+ ATMEL_HLCDC_LAYER_A2Q |
+ ATMEL_HLCDC_LAYER_UPDATE);
+
+ /* Clear all pending interrupts */
+ atmel_hlcdc_layer_read_reg(&plane->layer, ATMEL_HLCDC_LAYER_ISR);
}
static void atmel_hlcdc_plane_atomic_update(struct drm_plane *p,
@@ -773,6 +747,11 @@ static void atmel_hlcdc_plane_atomic_update(struct drm_plane *p,
if (!p->state->crtc || !p->state->fb)
return;
+ if (!state->base.visible) {
+ atmel_hlcdc_plane_atomic_disable(p, old_s);
+ return;
+ }
+
atmel_hlcdc_plane_update_pos_and_size(plane, state);
atmel_hlcdc_plane_update_general_settings(plane, state);
atmel_hlcdc_plane_update_format(plane, state);
@@ -794,25 +773,6 @@ static void atmel_hlcdc_plane_atomic_update(struct drm_plane *p,
ATMEL_HLCDC_LAYER_A2Q : ATMEL_HLCDC_LAYER_EN));
}
-static void atmel_hlcdc_plane_atomic_disable(struct drm_plane *p,
- struct drm_plane_state *old_state)
-{
- struct atmel_hlcdc_plane *plane = drm_plane_to_atmel_hlcdc_plane(p);
-
- /* Disable interrupts */
- atmel_hlcdc_layer_write_reg(&plane->layer, ATMEL_HLCDC_LAYER_IDR,
- 0xffffffff);
-
- /* Disable the layer */
- atmel_hlcdc_layer_write_reg(&plane->layer, ATMEL_HLCDC_LAYER_CHDR,
- ATMEL_HLCDC_LAYER_RST |
- ATMEL_HLCDC_LAYER_A2Q |
- ATMEL_HLCDC_LAYER_UPDATE);
-
- /* Clear all pending interrupts */
- atmel_hlcdc_layer_read_reg(&plane->layer, ATMEL_HLCDC_LAYER_ISR);
-}
-
static void atmel_hlcdc_plane_destroy(struct drm_plane *p)
{
struct atmel_hlcdc_plane *plane = drm_plane_to_atmel_hlcdc_plane(p);
--
2.11.0
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