drm/tegra: plane: Support horizontal reflection
Support horizontal reflection mode which will allow to support 180° rotation mode when combined with the vertical reflection. Signed-off-by: Dmitry Osipenko <digetx@gmail.com> Signed-off-by: Thierry Reding <treding@nvidia.com>
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@ -368,6 +368,12 @@ static void tegra_dc_setup_window(struct tegra_plane *plane,
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h_size = window->src.w * bpp;
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v_size = window->src.h;
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if (window->reflect_x)
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h_offset += (window->src.w - 1) * bpp;
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if (window->reflect_y)
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v_offset += window->src.h - 1;
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value = V_PRESCALED_SIZE(v_size) | H_PRESCALED_SIZE(h_size);
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tegra_plane_writel(plane, value, DC_WIN_PRESCALED_SIZE);
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@ -404,9 +410,6 @@ static void tegra_dc_setup_window(struct tegra_plane *plane,
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tegra_plane_writel(plane, window->stride[0], DC_WIN_LINE_STRIDE);
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}
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if (window->reflect_y)
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v_offset += window->src.h - 1;
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tegra_plane_writel(plane, h_offset, DC_WINBUF_ADDR_H_OFFSET);
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tegra_plane_writel(plane, v_offset, DC_WINBUF_ADDR_V_OFFSET);
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@ -470,6 +473,9 @@ static void tegra_dc_setup_window(struct tegra_plane *plane,
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value |= COLOR_EXPAND;
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}
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if (window->reflect_x)
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value |= H_DIRECTION;
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if (window->reflect_y)
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value |= V_DIRECTION;
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@ -601,7 +607,10 @@ static int tegra_plane_atomic_check(struct drm_plane *plane,
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struct drm_plane_state *state)
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{
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struct tegra_plane_state *plane_state = to_tegra_plane_state(state);
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unsigned int rotation = DRM_MODE_ROTATE_0 | DRM_MODE_REFLECT_Y;
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unsigned int supported_rotation = DRM_MODE_ROTATE_0 |
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DRM_MODE_REFLECT_X |
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DRM_MODE_REFLECT_Y;
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unsigned int rotation = state->rotation;
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struct tegra_bo_tiling *tiling = &plane_state->tiling;
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struct tegra_plane *tegra = to_tegra_plane(plane);
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struct tegra_dc *dc = to_tegra_dc(state->crtc);
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@ -639,7 +648,21 @@ static int tegra_plane_atomic_check(struct drm_plane *plane,
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return -EINVAL;
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}
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rotation = drm_rotation_simplify(state->rotation, rotation);
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/*
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* Older userspace used custom BO flag in order to specify the Y
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* reflection, while modern userspace uses the generic DRM rotation
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* property in order to achieve the same result. The legacy BO flag
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* duplicates the DRM rotation property when both are set.
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*/
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if (tegra_fb_is_bottom_up(state->fb))
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rotation |= DRM_MODE_REFLECT_Y;
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rotation = drm_rotation_simplify(rotation, supported_rotation);
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if (rotation & DRM_MODE_REFLECT_X)
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plane_state->reflect_x = true;
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else
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plane_state->reflect_x = false;
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if (rotation & DRM_MODE_REFLECT_Y)
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plane_state->reflect_y = true;
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@ -706,7 +729,8 @@ static void tegra_plane_atomic_update(struct drm_plane *plane,
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window.dst.w = drm_rect_width(&plane->state->dst);
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window.dst.h = drm_rect_height(&plane->state->dst);
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window.bits_per_pixel = fb->format->cpp[0] * 8;
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window.reflect_y = tegra_fb_is_bottom_up(fb) || state->reflect_y;
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window.reflect_x = state->reflect_x;
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window.reflect_y = state->reflect_y;
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/* copy from state */
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window.zpos = plane->state->normalized_zpos;
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@ -792,6 +816,7 @@ static struct drm_plane *tegra_primary_plane_create(struct drm_device *drm,
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err = drm_plane_create_rotation_property(&plane->base,
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DRM_MODE_ROTATE_0,
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DRM_MODE_ROTATE_0 |
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DRM_MODE_REFLECT_X |
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DRM_MODE_REFLECT_Y);
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if (err < 0)
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dev_err(dc->dev, "failed to create rotation property: %d\n",
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@ -1080,6 +1105,7 @@ static struct drm_plane *tegra_dc_overlay_plane_create(struct drm_device *drm,
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err = drm_plane_create_rotation_property(&plane->base,
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DRM_MODE_ROTATE_0,
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DRM_MODE_ROTATE_0 |
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DRM_MODE_REFLECT_X |
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DRM_MODE_REFLECT_Y);
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if (err < 0)
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dev_err(dc->dev, "failed to create rotation property: %d\n",
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@ -136,6 +136,7 @@ struct tegra_dc_window {
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unsigned int stride[2];
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unsigned long base[3];
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unsigned int zpos;
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bool reflect_x;
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bool reflect_y;
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struct tegra_bo_tiling tiling;
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@ -61,6 +61,7 @@ tegra_plane_atomic_duplicate_state(struct drm_plane *plane)
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copy->tiling = state->tiling;
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copy->format = state->format;
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copy->swap = state->swap;
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copy->reflect_x = state->reflect_x;
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copy->reflect_y = state->reflect_y;
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copy->opaque = state->opaque;
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@ -46,6 +46,7 @@ struct tegra_plane_state {
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u32 format;
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u32 swap;
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bool reflect_x;
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bool reflect_y;
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/* used for legacy blending support only */
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