diff options
Diffstat (limited to 'target/linux/brcm2708/patches-4.19/950-0734-drm-vc4-Add-support-for-H-V-flips.patch')
| -rw-r--r-- | target/linux/brcm2708/patches-4.19/950-0734-drm-vc4-Add-support-for-H-V-flips.patch | 135 |
1 files changed, 135 insertions, 0 deletions
diff --git a/target/linux/brcm2708/patches-4.19/950-0734-drm-vc4-Add-support-for-H-V-flips.patch b/target/linux/brcm2708/patches-4.19/950-0734-drm-vc4-Add-support-for-H-V-flips.patch new file mode 100644 index 0000000000..4c9cb7699e --- /dev/null +++ b/target/linux/brcm2708/patches-4.19/950-0734-drm-vc4-Add-support-for-H-V-flips.patch @@ -0,0 +1,135 @@ +From 1246d16c393a2f5790e5492053f26e6b0b62cec8 Mon Sep 17 00:00:00 2001 +From: Dave Stevenson <dave.stevenson@raspberrypi.org> +Date: Tue, 17 Sep 2019 18:36:32 +0100 +Subject: [PATCH] drm/vc4: Add support for H & V flips + +The HVS supports horizontal and vertical flips whilst composing. + +Expose these through the standard DRM rotation property. + +Signed-off-by: Dave Stevenson <dave.stevenson@raspberrypi.org> +--- + drivers/gpu/drm/vc4/vc4_plane.c | 54 +++++++++++++++++++++++++++------ + 1 file changed, 45 insertions(+), 9 deletions(-) + +--- a/drivers/gpu/drm/vc4/vc4_plane.c ++++ b/drivers/gpu/drm/vc4/vc4_plane.c +@@ -560,7 +560,9 @@ static int vc4_plane_mode_set(struct drm + const struct hvs_format *format = vc4_get_hvs_format(fb->format->format); + u64 base_format_mod = fourcc_mod_broadcom_mod(fb->modifier); + int num_planes = drm_format_num_planes(format->drm); ++ bool hflip = false, vflip = false; + u32 h_subsample, v_subsample; ++ unsigned int rotation; + bool mix_plane_alpha; + bool covers_screen; + u32 scl0, scl1, pitch0; +@@ -568,11 +570,26 @@ static int vc4_plane_mode_set(struct drm + unsigned long irqflags; + u32 hvs_format = format->hvs; + int ret, i; ++ u32 src_y; + + ret = vc4_plane_setup_clipping_and_scaling(state); + if (ret) + return ret; + ++ rotation = drm_rotation_simplify(state->rotation, ++ DRM_MODE_ROTATE_0 | ++ DRM_MODE_REFLECT_X | ++ DRM_MODE_REFLECT_Y); ++ ++ if ((rotation & DRM_MODE_ROTATE_MASK) == DRM_MODE_ROTATE_180) { ++ hflip = true; ++ vflip = true; ++ } ++ if (rotation & DRM_MODE_REFLECT_X) ++ hflip ^= true; ++ if (rotation & DRM_MODE_REFLECT_Y) ++ vflip ^= true; ++ + /* Allocate the LBM memory that the HVS will use for temporary + * storage due to our scaling/format conversion. + */ +@@ -609,6 +626,16 @@ static int vc4_plane_mode_set(struct drm + h_subsample = drm_format_horz_chroma_subsampling(format->drm); + v_subsample = drm_format_vert_chroma_subsampling(format->drm); + ++ if (!vflip) ++ src_y = vc4_state->src_y; ++ else ++ /* When vflipped the image offset needs to be ++ * the start of the last line of the image, and ++ * the pitch will be subtracted from the offset. ++ */ ++ src_y = vc4_state->src_y + ++ vc4_state->src_h[0] - 1; ++ + switch (base_format_mod) { + case DRM_FORMAT_MOD_LINEAR: + tiling = SCALER_CTL0_TILING_LINEAR; +@@ -618,12 +645,13 @@ static int vc4_plane_mode_set(struct drm + * out. + */ + for (i = 0; i < num_planes; i++) { +- vc4_state->offsets[i] += vc4_state->src_y / ++ vc4_state->offsets[i] += src_y / + (i ? v_subsample : 1) * + fb->pitches[i]; ++ + vc4_state->offsets[i] += vc4_state->src_x / +- (i ? h_subsample : 1) * +- fb->format->cpp[i]; ++ (i ? h_subsample : 1) * ++ fb->format->cpp[i]; + } + + break; +@@ -651,11 +679,11 @@ static int vc4_plane_mode_set(struct drm + * SCALER_PITCH0_TILE_Y_OFFSET tells HVS how to walk from that + * base address). + */ +- u32 tile_y = (vc4_state->src_y >> 4) & 1; +- u32 subtile_y = (vc4_state->src_y >> 2) & 3; +- u32 utile_y = vc4_state->src_y & 3; ++ u32 tile_y = (src_y >> 4) & 1; ++ u32 subtile_y = (src_y >> 2) & 3; ++ u32 utile_y = src_y & 3; + u32 x_off = vc4_state->src_x & tile_w_mask; +- u32 y_off = vc4_state->src_y & tile_h_mask; ++ u32 y_off = src_y & tile_h_mask; + + tiling = SCALER_CTL0_TILING_256B_OR_T; + pitch0 = (VC4_SET_FIELD(x_off, SCALER_PITCH0_SINK_PIX) | +@@ -732,7 +760,7 @@ static int vc4_plane_mode_set(struct drm + */ + for (i = 0; i < num_planes; i++) { + vc4_state->offsets[i] += param * tile_w * tile; +- vc4_state->offsets[i] += vc4_state->src_y / ++ vc4_state->offsets[i] += src_y / + (i ? v_subsample : 1) * + tile_w; + vc4_state->offsets[i] += x_off / +@@ -759,7 +787,9 @@ static int vc4_plane_mode_set(struct drm + VC4_SET_FIELD(tiling, SCALER_CTL0_TILING) | + (vc4_state->is_unity ? SCALER_CTL0_UNITY : 0) | + VC4_SET_FIELD(scl0, SCALER_CTL0_SCL0) | +- VC4_SET_FIELD(scl1, SCALER_CTL0_SCL1)); ++ VC4_SET_FIELD(scl1, SCALER_CTL0_SCL1) | ++ (vflip ? SCALER_CTL0_VFLIP : 0) | ++ (hflip ? SCALER_CTL0_HFLIP : 0)); + + /* Position Word 0: Image Positions and Alpha Value */ + vc4_state->pos0_offset = vc4_state->dlist_count; +@@ -1203,5 +1233,11 @@ struct drm_plane *vc4_plane_init(struct + DRM_COLOR_YCBCR_BT709, + DRM_COLOR_YCBCR_LIMITED_RANGE); + ++ drm_plane_create_rotation_property(plane, DRM_MODE_ROTATE_0, ++ DRM_MODE_ROTATE_0 | ++ DRM_MODE_ROTATE_180 | ++ DRM_MODE_REFLECT_X | ++ DRM_MODE_REFLECT_Y); ++ + return plane; + } |