| lists.openwall.net | lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC | |
|
Open Source and information security mailing list archives
| ||
|
Message-Id: <20160826092433.23771-1-digetx@gmail.com>
Date: Fri, 26 Aug 2016 12:22:26 +0300
From: Dmitry Osipenko <digetx@...il.com>
To: Thierry Reding <thierry.reding@...il.com>
Cc: dri-devel@...ts.freedesktop.org, linux-tegra@...r.kernel.org,
linux-kernel@...r.kernel.org
Subject: [PATCH] drm/tegra: dc: Apply clipping to the overlay plane
Overlay plane should be clipped, otherwise overlay output gets distorted
once plane crosses display boundary. As a "side effect" this patch also
adds a sanity check for the primary plane, insuring that it covers whole
display area.
Signed-off-by: Dmitry Osipenko <digetx@...il.com>
---
drivers/gpu/drm/tegra/dc.c | 85 ++++++++++++++++++++++++++++++----------------
1 file changed, 56 insertions(+), 29 deletions(-)
diff --git a/drivers/gpu/drm/tegra/dc.c b/drivers/gpu/drm/tegra/dc.c
index 4010d69..ddac53c 100644
--- a/drivers/gpu/drm/tegra/dc.c
+++ b/drivers/gpu/drm/tegra/dc.c
@@ -480,31 +480,24 @@ static const struct drm_plane_funcs tegra_primary_plane_funcs = {
.atomic_destroy_state = tegra_plane_atomic_destroy_state,
};
-static int tegra_plane_state_add(struct tegra_plane *plane,
- struct drm_plane_state *state)
+static void tegra_plane_state_add(struct tegra_plane *plane,
+ struct drm_crtc_state *crtc_state)
{
- struct drm_crtc_state *crtc_state;
- struct tegra_dc_state *tegra;
-
- /* Propagate errors from allocation or locking failures. */
- crtc_state = drm_atomic_get_crtc_state(state->state, state->crtc);
- if (IS_ERR(crtc_state))
- return PTR_ERR(crtc_state);
-
- tegra = to_dc_state(crtc_state);
+ struct tegra_dc_state *tegra = to_dc_state(crtc_state);
tegra->planes |= WIN_A_ACT_REQ << plane->index;
-
- return 0;
}
static int tegra_plane_atomic_check(struct drm_plane *plane,
- struct drm_plane_state *state)
+ struct drm_plane_state *state,
+ bool overlay)
{
struct tegra_plane_state *plane_state = to_tegra_plane_state(state);
struct tegra_bo_tiling *tiling = &plane_state->tiling;
struct tegra_plane *tegra = to_tegra_plane(plane);
struct tegra_dc *dc = to_tegra_dc(state->crtc);
+ struct drm_crtc_state *crtc_state;
+ struct drm_rect clip;
int err;
/* no need for further checks if the plane is being disabled */
@@ -538,13 +531,38 @@ static int tegra_plane_atomic_check(struct drm_plane *plane,
}
}
- err = tegra_plane_state_add(tegra, state);
+ /* propagate errors from allocation or locking failures. */
+ crtc_state = drm_atomic_get_crtc_state(state->state, state->crtc);
+ if (IS_ERR(crtc_state))
+ return PTR_ERR(crtc_state);
+
+ /* check plane for visibility and apply clipping */
+ clip.x1 = 0;
+ clip.y1 = 0;
+ clip.x2 = crtc_state->mode.hdisplay;
+ clip.y2 = crtc_state->mode.vdisplay;
+
+ err = drm_plane_helper_check_state(state, &clip, 0, INT_MAX,
+ overlay, true);
if (err < 0)
return err;
+ if (!state->visible) {
+ DRM_ERROR("hardware doesn't handle invisible plane\n");
+ return -EINVAL;
+ }
+
+ tegra_plane_state_add(tegra, crtc_state);
+
return 0;
}
+static int tegra_primary_plane_atomic_check(struct drm_plane *plane,
+ struct drm_plane_state *state)
+{
+ return tegra_plane_atomic_check(plane, state, false);
+}
+
static void tegra_plane_atomic_update(struct drm_plane *plane,
struct drm_plane_state *old_state)
{
@@ -560,14 +578,14 @@ static void tegra_plane_atomic_update(struct drm_plane *plane,
return;
memset(&window, 0, sizeof(window));
- window.src.x = plane->state->src_x >> 16;
- window.src.y = plane->state->src_y >> 16;
- window.src.w = plane->state->src_w >> 16;
- window.src.h = plane->state->src_h >> 16;
- window.dst.x = plane->state->crtc_x;
- window.dst.y = plane->state->crtc_y;
- window.dst.w = plane->state->crtc_w;
- window.dst.h = plane->state->crtc_h;
+ window.src.x = plane->state->src.x1 >> 16;
+ window.src.y = plane->state->src.y1 >> 16;
+ window.src.w = drm_rect_width(&plane->state->src) >> 16;
+ window.src.h = drm_rect_height(&plane->state->src) >> 16;
+ window.dst.x = plane->state->dst.x1;
+ window.dst.y = plane->state->dst.y1;
+ window.dst.w = drm_rect_width(&plane->state->dst);
+ window.dst.h = drm_rect_height(&plane->state->dst);
window.bits_per_pixel = fb->bits_per_pixel;
window.bottom_up = tegra_fb_is_bottom_up(fb);
@@ -620,7 +638,7 @@ static void tegra_plane_atomic_disable(struct drm_plane *plane,
}
static const struct drm_plane_helper_funcs tegra_primary_plane_helper_funcs = {
- .atomic_check = tegra_plane_atomic_check,
+ .atomic_check = tegra_primary_plane_atomic_check,
.atomic_update = tegra_plane_atomic_update,
.atomic_disable = tegra_plane_atomic_disable,
};
@@ -675,7 +693,7 @@ static int tegra_cursor_atomic_check(struct drm_plane *plane,
struct drm_plane_state *state)
{
struct tegra_plane *tegra = to_tegra_plane(plane);
- int err;
+ struct drm_crtc_state *crtc_state;
/* no need for further checks if the plane is being disabled */
if (!state->crtc)
@@ -694,9 +712,12 @@ static int tegra_cursor_atomic_check(struct drm_plane *plane,
state->crtc_w != 128 && state->crtc_w != 256)
return -EINVAL;
- err = tegra_plane_state_add(tegra, state);
- if (err < 0)
- return err;
+ /* propagate errors from allocation or locking failures. */
+ crtc_state = drm_atomic_get_crtc_state(state->state, state->crtc);
+ if (IS_ERR(crtc_state))
+ return PTR_ERR(crtc_state);
+
+ tegra_plane_state_add(tegra, crtc_state);
return 0;
}
@@ -857,8 +878,14 @@ static const uint32_t tegra_overlay_plane_formats[] = {
DRM_FORMAT_YUV422,
};
+static int tegra_overlay_plane_atomic_check(struct drm_plane *plane,
+ struct drm_plane_state *state)
+{
+ return tegra_plane_atomic_check(plane, state, true);
+}
+
static const struct drm_plane_helper_funcs tegra_overlay_plane_helper_funcs = {
- .atomic_check = tegra_plane_atomic_check,
+ .atomic_check = tegra_overlay_plane_atomic_check,
.atomic_update = tegra_plane_atomic_update,
.atomic_disable = tegra_plane_atomic_disable,
};
--
2.9.3
Powered by blists - more mailing lists