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drm/atmel-hlcdc: fix clipping of planes

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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@axentia.se>
Signed-off-by: Boris Brezillon <bbrezillon@kernel.org>
Link: https://patchwork.freedesktop.org/patch/msgid/20190110151020.30468-4-peda@axentia.se
This commit is contained in:
Peter Rosin 2019-01-10 15:10:44 +00:00 committed by Boris Brezillon
parent d06fe137b5
commit ac109c8247
1 changed files with 62 additions and 102 deletions
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164
drivers/gpu/drm/atmel-hlcdc/atmel_hlcdc_plane.c
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@ -549,7 +549,8 @@ 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;
@ -601,15 +602,10 @@ 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)
@ -618,14 +614,21 @@ 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;
@ -639,42 +642,6 @@ 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);
@ -689,41 +656,38 @@ 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;
@ -732,37 +696,47 @@ 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;
if (state->crtc_w + state->crtc_x > mode->hdisplay ||
state->crtc_h + state->crtc_y > mode->vdisplay)
return -EINVAL;
return 0;
}
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_atomic_update(struct drm_plane *p,
struct drm_plane_state *old_s)
{
@ -774,6 +748,11 @@ 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);
@ -795,25 +774,6 @@ 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 int atmel_hlcdc_plane_init_properties(struct atmel_hlcdc_plane *plane)
{
const struct atmel_hlcdc_layer_desc *desc = plane->layer.desc;