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drm/tegra: dc: Apply clipping to the plane

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On Tegra20 an overlay plane should be clipped, otherwise its output is
distorted once plane crosses display boundary.

Signed-off-by: Dmitry Osipenko <digetx@gmail.com>
Reviewed-by: Erik Faye-Lund <kusmabite@gmail.com>
Signed-off-by: Thierry Reding <treding@nvidia.com>
This commit is contained in:
Dmitry Osipenko 2017-06-15 02:18:30 +03:00 committed by Thierry Reding
parent 6ac1571b4c
commit 7d2058571a
1 changed files with 21 additions and 8 deletions
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29
drivers/gpu/drm/tegra/dc.c
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@ -486,12 +486,25 @@ static int tegra_plane_state_add(struct tegra_plane *plane,
{
struct drm_crtc_state *crtc_state;
struct tegra_dc_state *tegra;
struct drm_rect clip;
int 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);
clip.x1 = 0;
clip.y1 = 0;
clip.x2 = crtc_state->mode.hdisplay;
clip.y2 = crtc_state->mode.vdisplay;
/* Check plane state for visibility and calculate clipping bounds */
err = drm_plane_helper_check_state(state, &clip, 0, INT_MAX,
true, true);
if (err < 0)
return err;
tegra = to_dc_state(crtc_state);
tegra->planes |= WIN_A_ACT_REQ << plane->index;
@ -561,14 +574,14 @@ 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->format->cpp[0] * 8;
window.bottom_up = tegra_fb_is_bottom_up(fb);