From db7fbdfd25ee009165b6c3b80a9d1c6d8534ad94 Mon Sep 17 00:00:00 2001 From: Thierry Reding Date: Mon, 7 Oct 2013 09:47:58 +0200 Subject: [PATCH] drm/tegra: Support bottom-up buffer objects The gr3d engine renders images bottom-up. Allow buffers that are used for 3D content to be marked as such and implement support in the display controller to present them properly. Signed-off-by: Thierry Reding Signed-off-by: Thierry Reding --- drivers/gpu/drm/tegra/dc.c | 24 ++++++++++++++++++++++++ drivers/gpu/drm/tegra/dc.h | 1 + drivers/gpu/drm/tegra/drm.h | 2 ++ drivers/gpu/drm/tegra/fb.c | 10 ++++++++++ drivers/gpu/drm/tegra/gem.c | 3 +++ drivers/gpu/drm/tegra/gem.h | 3 ++- include/uapi/drm/tegra_drm.h | 3 ++- 7 files changed, 44 insertions(+), 2 deletions(-) diff --git a/drivers/gpu/drm/tegra/dc.c b/drivers/gpu/drm/tegra/dc.c index c51aaf7555f5..ae1cb31ead7e 100644 --- a/drivers/gpu/drm/tegra/dc.c +++ b/drivers/gpu/drm/tegra/dc.c @@ -47,6 +47,7 @@ static int tegra_plane_update(struct drm_plane *plane, struct drm_crtc *crtc, window.dst.h = crtc_h; window.format = tegra_dc_format(fb->pixel_format); window.bits_per_pixel = fb->bits_per_pixel; + window.bottom_up = tegra_fb_is_bottom_up(fb); window.tiled = tegra_fb_is_tiled(fb); for (i = 0; i < drm_format_num_planes(fb->pixel_format); i++) { @@ -147,6 +148,7 @@ static int tegra_dc_set_base(struct tegra_dc *dc, int x, int y, { unsigned int format = tegra_dc_format(fb->pixel_format); struct tegra_bo *bo = tegra_fb_get_plane(fb, 0); + unsigned int h_offset = 0, v_offset = 0; unsigned long value; tegra_dc_writel(dc, WINDOW_A_SELECT, DC_CMD_DISPLAY_WINDOW_HEADER); @@ -168,6 +170,22 @@ static int tegra_dc_set_base(struct tegra_dc *dc, int x, int y, tegra_dc_writel(dc, value, DC_WIN_BUFFER_ADDR_MODE); + /* make sure bottom-up buffers are properly displayed */ + if (tegra_fb_is_bottom_up(fb)) { + value = tegra_dc_readl(dc, DC_WIN_WIN_OPTIONS); + value |= INVERT_V; + tegra_dc_writel(dc, value, DC_WIN_WIN_OPTIONS); + + v_offset += fb->height - 1; + } else { + value = tegra_dc_readl(dc, DC_WIN_WIN_OPTIONS); + value &= ~INVERT_V; + tegra_dc_writel(dc, value, DC_WIN_WIN_OPTIONS); + } + + tegra_dc_writel(dc, h_offset, DC_WINBUF_ADDR_H_OFFSET); + tegra_dc_writel(dc, v_offset, DC_WINBUF_ADDR_V_OFFSET); + value = GENERAL_UPDATE | WIN_A_UPDATE; tegra_dc_writel(dc, value, DC_CMD_STATE_CONTROL); @@ -517,6 +535,9 @@ int tegra_dc_setup_window(struct tegra_dc *dc, unsigned int index, tegra_dc_writel(dc, window->stride[0], DC_WIN_LINE_STRIDE); } + if (window->bottom_up) + v_offset += window->src.h - 1; + tegra_dc_writel(dc, h_offset, DC_WINBUF_ADDR_H_OFFSET); tegra_dc_writel(dc, v_offset, DC_WINBUF_ADDR_V_OFFSET); @@ -548,6 +569,9 @@ int tegra_dc_setup_window(struct tegra_dc *dc, unsigned int index, value |= COLOR_EXPAND; } + if (window->bottom_up) + value |= INVERT_V; + tegra_dc_writel(dc, value, DC_WIN_WIN_OPTIONS); /* diff --git a/drivers/gpu/drm/tegra/dc.h b/drivers/gpu/drm/tegra/dc.h index e0b94c26bb86..91bbda291470 100644 --- a/drivers/gpu/drm/tegra/dc.h +++ b/drivers/gpu/drm/tegra/dc.h @@ -302,6 +302,7 @@ #define DC_WIN_CSC_KVB 0x618 #define DC_WIN_WIN_OPTIONS 0x700 +#define INVERT_V (1 << 2) #define COLOR_EXPAND (1 << 6) #define CSC_ENABLE (1 << 18) #define WIN_ENABLE (1 << 30) diff --git a/drivers/gpu/drm/tegra/drm.h b/drivers/gpu/drm/tegra/drm.h index e07a10eedae6..fdfe259ed7f8 100644 --- a/drivers/gpu/drm/tegra/drm.h +++ b/drivers/gpu/drm/tegra/drm.h @@ -148,6 +148,7 @@ struct tegra_dc_window { unsigned int format; unsigned int stride[2]; unsigned long base[3]; + bool bottom_up; bool tiled; }; @@ -255,6 +256,7 @@ extern int tegra_output_exit(struct tegra_output *output); /* from fb.c */ struct tegra_bo *tegra_fb_get_plane(struct drm_framebuffer *framebuffer, unsigned int index); +bool tegra_fb_is_bottom_up(struct drm_framebuffer *framebuffer); bool tegra_fb_is_tiled(struct drm_framebuffer *framebuffer); extern int tegra_drm_fb_init(struct drm_device *drm); extern void tegra_drm_fb_exit(struct drm_device *drm); diff --git a/drivers/gpu/drm/tegra/fb.c b/drivers/gpu/drm/tegra/fb.c index fdb00e040046..490f7719e317 100644 --- a/drivers/gpu/drm/tegra/fb.c +++ b/drivers/gpu/drm/tegra/fb.c @@ -34,6 +34,16 @@ struct tegra_bo *tegra_fb_get_plane(struct drm_framebuffer *framebuffer, return fb->planes[index]; } +bool tegra_fb_is_bottom_up(struct drm_framebuffer *framebuffer) +{ + struct tegra_fb *fb = to_tegra_fb(framebuffer); + + if (fb->planes[0]->flags & TEGRA_BO_BOTTOM_UP) + return true; + + return false; +} + bool tegra_fb_is_tiled(struct drm_framebuffer *framebuffer) { struct tegra_fb *fb = to_tegra_fb(framebuffer); diff --git a/drivers/gpu/drm/tegra/gem.c b/drivers/gpu/drm/tegra/gem.c index d851ec106cf4..28a9cbc07ab9 100644 --- a/drivers/gpu/drm/tegra/gem.c +++ b/drivers/gpu/drm/tegra/gem.c @@ -132,6 +132,9 @@ struct tegra_bo *tegra_bo_create(struct drm_device *drm, unsigned int size, if (flags & DRM_TEGRA_GEM_CREATE_TILED) bo->flags |= TEGRA_BO_TILED; + if (flags & DRM_TEGRA_GEM_CREATE_BOTTOM_UP) + bo->flags |= TEGRA_BO_BOTTOM_UP; + return bo; err_mmap: diff --git a/drivers/gpu/drm/tegra/gem.h b/drivers/gpu/drm/tegra/gem.h index c4993fc2c3bd..7674000bf47d 100644 --- a/drivers/gpu/drm/tegra/gem.h +++ b/drivers/gpu/drm/tegra/gem.h @@ -24,7 +24,8 @@ #include #include -#define TEGRA_BO_TILED (1 << 0) +#define TEGRA_BO_TILED (1 << 0) +#define TEGRA_BO_BOTTOM_UP (1 << 1) struct tegra_bo { struct drm_gem_object gem; diff --git a/include/uapi/drm/tegra_drm.h b/include/uapi/drm/tegra_drm.h index 6b420029a645..0f8575f58db8 100644 --- a/include/uapi/drm/tegra_drm.h +++ b/include/uapi/drm/tegra_drm.h @@ -19,7 +19,8 @@ #include -#define DRM_TEGRA_GEM_CREATE_TILED (1 << 0) +#define DRM_TEGRA_GEM_CREATE_TILED (1 << 0) +#define DRM_TEGRA_GEM_CREATE_BOTTOM_UP (1 << 1) struct drm_tegra_gem_create { __u64 size; -- 2.30.2