Adding upstream version 2.4.120.upstream/2.4.120

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

10 files changed, 2453 insertions, 0 deletions

diff --git a/tests/util/Android.mk b/tests/util/Android.mk
new file mode 100644
index 0000000..12eccb4
--- /dev/null
+++ b/tests/util/Android.mk
@@ -0,0 +1,38 @@
+#
+# Copyright © 2015 NVIDIA Corporation
+#
+# Permission is hereby granted, free of charge, to any person obtaining a
+# copy of this software and associated documentation files (the "Software"),
+# to deal in the Software without restriction, including without limitation
+# the rights to use, copy, modify, merge, publish, distribute, sublicense,
+# and/or sell copies of the Software, and to permit persons to whom the
+# Software is furnished to do so, subject to the following conditions:
+#
+# The above copyright notice and this permission notice (including the next
+# paragraph) shall be included in all copies or substantial portions of the
+# Software.
+#
+# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+# IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+# FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
+# THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+# LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+# FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
+# IN THE SOFTWARE.
+#
+
+LOCAL_PATH := $(call my-dir)
+
+include $(CLEAR_VARS)
+include $(LOCAL_PATH)/Makefile.sources
+
+LOCAL_MODULE := libdrm_util
+
+LOCAL_SHARED_LIBRARIES := libdrm
+
+LOCAL_SRC_FILES := $(UTIL_FILES)
+
+LOCAL_EXPORT_C_INCLUDE_DIRS := $(LIBDRM_TOP)/tests
+
+include $(LIBDRM_COMMON_MK)
+include $(BUILD_STATIC_LIBRARY)
diff --git a/tests/util/Makefile.sources b/tests/util/Makefile.sources
new file mode 100644
index 0000000..e5f8511
--- /dev/null
+++ b/tests/util/Makefile.sources
@@ -0,0 +1,8 @@
+UTIL_FILES := \
+	common.h \
+	format.c \
+	format.h \
+	kms.c \
+	kms.h \
+	pattern.c \
+	pattern.h
diff --git a/tests/util/common.h b/tests/util/common.h
new file mode 100644
index 0000000..5d572c2
--- /dev/null
+++ b/tests/util/common.h
@@ -0,0 +1,33 @@
+/*
+ * Copyright 2008 Tungsten Graphics
+ *   Jakob Bornecrantz <jakob@tungstengraphics.com>
+ * Copyright 2008 Intel Corporation
+ *   Jesse Barnes <jesse.barnes@intel.com>
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the "Software"),
+ * to deal in the Software without restriction, including without limitation
+ * the rights to use, copy, modify, merge, publish, distribute, sublicense,
+ * and/or sell copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+ * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
+ * IN THE SOFTWARE.
+ */
+
+#ifndef UTIL_COMMON_H
+#define UTIL_COMMON_H
+
+#ifndef ARRAY_SIZE
+#define ARRAY_SIZE(a) (sizeof(a) / sizeof((a)[0]))
+#endif
+
+#endif /* UTIL_COMMON_H */
diff --git a/tests/util/format.c b/tests/util/format.c
new file mode 100644
index 0000000..eda3c67
--- /dev/null
+++ b/tests/util/format.c
@@ -0,0 +1,134 @@
+/*
+ * Copyright 2008 Tungsten Graphics
+ *   Jakob Bornecrantz <jakob@tungstengraphics.com>
+ * Copyright 2008 Intel Corporation
+ *   Jesse Barnes <jesse.barnes@intel.com>
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the "Software"),
+ * to deal in the Software without restriction, including without limitation
+ * the rights to use, copy, modify, merge, publish, distribute, sublicense,
+ * and/or sell copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+ * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
+ * IN THE SOFTWARE.
+ */
+
+#include <stdint.h>
+#include <stdlib.h>
+#include <string.h>
+
+#include <drm_fourcc.h>
+
+#include "common.h"
+#include "format.h"
+
+#define MAKE_RGB_INFO(rl, ro, gl, go, bl, bo, al, ao) \
+	.rgb = { { (rl), (ro) }, { (gl), (go) }, { (bl), (bo) }, { (al), (ao) } }
+
+#define MAKE_YUV_INFO(order, xsub, ysub, chroma_stride) \
+	.yuv = { (order), (xsub), (ysub), (chroma_stride) }
+
+static const struct util_format_info format_info[] = {
+	/* Indexed */
+	{ DRM_FORMAT_C1, "C1", .ncolors = 2 },
+	{ DRM_FORMAT_C2, "C2", .ncolors = 4 },
+	{ DRM_FORMAT_C4, "C4", .ncolors = 16 },
+	{ DRM_FORMAT_C8, "C8", .ncolors = 256 },
+	/* YUV packed */
+	{ DRM_FORMAT_UYVY, "UYVY", MAKE_YUV_INFO(YUV_YCbCr | YUV_CY, 2, 2, 2) },
+	{ DRM_FORMAT_VYUY, "VYUY", MAKE_YUV_INFO(YUV_YCrCb | YUV_CY, 2, 2, 2) },
+	{ DRM_FORMAT_YUYV, "YUYV", MAKE_YUV_INFO(YUV_YCbCr | YUV_YC, 2, 2, 2) },
+	{ DRM_FORMAT_YVYU, "YVYU", MAKE_YUV_INFO(YUV_YCrCb | YUV_YC, 2, 2, 2) },
+	/* YUV semi-planar */
+	{ DRM_FORMAT_NV12, "NV12", MAKE_YUV_INFO(YUV_YCbCr, 2, 2, 2) },
+	{ DRM_FORMAT_NV21, "NV21", MAKE_YUV_INFO(YUV_YCrCb, 2, 2, 2) },
+	{ DRM_FORMAT_NV16, "NV16", MAKE_YUV_INFO(YUV_YCbCr, 2, 1, 2) },
+	{ DRM_FORMAT_NV61, "NV61", MAKE_YUV_INFO(YUV_YCrCb, 2, 1, 2) },
+	{ DRM_FORMAT_NV24, "NV24", MAKE_YUV_INFO(YUV_YCbCr, 1, 1, 2) },
+	{ DRM_FORMAT_NV42, "NV42", MAKE_YUV_INFO(YUV_YCrCb, 1, 1, 2) },
+	{ DRM_FORMAT_NV15, "NV15", MAKE_YUV_INFO(YUV_YCbCr, 2, 2, 2) },
+	{ DRM_FORMAT_NV20, "NV20", MAKE_YUV_INFO(YUV_YCbCr, 2, 1, 2) },
+	{ DRM_FORMAT_NV30, "NV30", MAKE_YUV_INFO(YUV_YCbCr, 1, 1, 2) },
+	/* YUV planar */
+	{ DRM_FORMAT_YUV420, "YU12", MAKE_YUV_INFO(YUV_YCbCr, 2, 2, 1) },
+	{ DRM_FORMAT_YVU420, "YV12", MAKE_YUV_INFO(YUV_YCrCb, 2, 2, 1) },
+	/* RGB16 */
+	{ DRM_FORMAT_ARGB4444, "AR12", MAKE_RGB_INFO(4, 8, 4, 4, 4, 0, 4, 12) },
+	{ DRM_FORMAT_XRGB4444, "XR12", MAKE_RGB_INFO(4, 8, 4, 4, 4, 0, 0, 0) },
+	{ DRM_FORMAT_ABGR4444, "AB12", MAKE_RGB_INFO(4, 0, 4, 4, 4, 8, 4, 12) },
+	{ DRM_FORMAT_XBGR4444, "XB12", MAKE_RGB_INFO(4, 0, 4, 4, 4, 8, 0, 0) },
+	{ DRM_FORMAT_RGBA4444, "RA12", MAKE_RGB_INFO(4, 12, 4, 8, 4, 4, 4, 0) },
+	{ DRM_FORMAT_RGBX4444, "RX12", MAKE_RGB_INFO(4, 12, 4, 8, 4, 4, 0, 0) },
+	{ DRM_FORMAT_BGRA4444, "BA12", MAKE_RGB_INFO(4, 4, 4, 8, 4, 12, 4, 0) },
+	{ DRM_FORMAT_BGRX4444, "BX12", MAKE_RGB_INFO(4, 4, 4, 8, 4, 12, 0, 0) },
+	{ DRM_FORMAT_ARGB1555, "AR15", MAKE_RGB_INFO(5, 10, 5, 5, 5, 0, 1, 15) },
+	{ DRM_FORMAT_XRGB1555, "XR15", MAKE_RGB_INFO(5, 10, 5, 5, 5, 0, 0, 0) },
+	{ DRM_FORMAT_ABGR1555, "AB15", MAKE_RGB_INFO(5, 0, 5, 5, 5, 10, 1, 15) },
+	{ DRM_FORMAT_XBGR1555, "XB15", MAKE_RGB_INFO(5, 0, 5, 5, 5, 10, 0, 0) },
+	{ DRM_FORMAT_RGBA5551, "RA15", MAKE_RGB_INFO(5, 11, 5, 6, 5, 1, 1, 0) },
+	{ DRM_FORMAT_RGBX5551, "RX15", MAKE_RGB_INFO(5, 11, 5, 6, 5, 1, 0, 0) },
+	{ DRM_FORMAT_BGRA5551, "BA15", MAKE_RGB_INFO(5, 1, 5, 6, 5, 11, 1, 0) },
+	{ DRM_FORMAT_BGRX5551, "BX15", MAKE_RGB_INFO(5, 1, 5, 6, 5, 11, 0, 0) },
+	{ DRM_FORMAT_RGB565, "RG16", MAKE_RGB_INFO(5, 11, 6, 5, 5, 0, 0, 0) },
+	{ DRM_FORMAT_BGR565, "BG16", MAKE_RGB_INFO(5, 0, 6, 5, 5, 11, 0, 0) },
+	/* Big-endian RGB16 */
+	{ DRM_FORMAT_XRGB1555 | DRM_FORMAT_BIG_ENDIAN, "XR15_BE", MAKE_RGB_INFO(5, 10, 5, 5, 5, 0, 0, 0) },
+	{ DRM_FORMAT_RGB565 | DRM_FORMAT_BIG_ENDIAN, "RG16_BE", MAKE_RGB_INFO(5, 11, 6, 5, 5, 0, 0, 0) },
+	/* RGB24 */
+	{ DRM_FORMAT_BGR888, "BG24", MAKE_RGB_INFO(8, 0, 8, 8, 8, 16, 0, 0) },
+	{ DRM_FORMAT_RGB888, "RG24", MAKE_RGB_INFO(8, 16, 8, 8, 8, 0, 0, 0) },
+	/* RGB32 */
+	{ DRM_FORMAT_ARGB8888, "AR24", MAKE_RGB_INFO(8, 16, 8, 8, 8, 0, 8, 24) },
+	{ DRM_FORMAT_XRGB8888, "XR24", MAKE_RGB_INFO(8, 16, 8, 8, 8, 0, 0, 0) },
+	{ DRM_FORMAT_ABGR8888, "AB24", MAKE_RGB_INFO(8, 0, 8, 8, 8, 16, 8, 24) },
+	{ DRM_FORMAT_XBGR8888, "XB24", MAKE_RGB_INFO(8, 0, 8, 8, 8, 16, 0, 0) },
+	{ DRM_FORMAT_RGBA8888, "RA24", MAKE_RGB_INFO(8, 24, 8, 16, 8, 8, 8, 0) },
+	{ DRM_FORMAT_RGBX8888, "RX24", MAKE_RGB_INFO(8, 24, 8, 16, 8, 8, 0, 0) },
+	{ DRM_FORMAT_BGRA8888, "BA24", MAKE_RGB_INFO(8, 8, 8, 16, 8, 24, 8, 0) },
+	{ DRM_FORMAT_BGRX8888, "BX24", MAKE_RGB_INFO(8, 8, 8, 16, 8, 24, 0, 0) },
+	{ DRM_FORMAT_ARGB2101010, "AR30", MAKE_RGB_INFO(10, 20, 10, 10, 10, 0, 2, 30) },
+	{ DRM_FORMAT_XRGB2101010, "XR30", MAKE_RGB_INFO(10, 20, 10, 10, 10, 0, 0, 0) },
+	{ DRM_FORMAT_ABGR2101010, "AB30", MAKE_RGB_INFO(10, 0, 10, 10, 10, 20, 2, 30) },
+	{ DRM_FORMAT_XBGR2101010, "XB30", MAKE_RGB_INFO(10, 0, 10, 10, 10, 20, 0, 0) },
+	{ DRM_FORMAT_RGBA1010102, "RA30", MAKE_RGB_INFO(10, 22, 10, 12, 10, 2, 2, 0) },
+	{ DRM_FORMAT_RGBX1010102, "RX30", MAKE_RGB_INFO(10, 22, 10, 12, 10, 2, 0, 0) },
+	{ DRM_FORMAT_BGRA1010102, "BA30", MAKE_RGB_INFO(10, 2, 10, 12, 10, 22, 2, 0) },
+	{ DRM_FORMAT_BGRX1010102, "BX30", MAKE_RGB_INFO(10, 2, 10, 12, 10, 22, 0, 0) },
+	{ DRM_FORMAT_XRGB16161616F, "XR4H", MAKE_RGB_INFO(16, 32, 16, 16, 16, 0, 0, 0) },
+	{ DRM_FORMAT_XBGR16161616F, "XB4H", MAKE_RGB_INFO(16, 0, 16, 16, 16, 32, 0, 0) },
+	{ DRM_FORMAT_ARGB16161616F, "AR4H", MAKE_RGB_INFO(16, 32, 16, 16, 16, 0, 16, 48) },
+	{ DRM_FORMAT_ABGR16161616F, "AB4H", MAKE_RGB_INFO(16, 0, 16, 16, 16, 32, 16, 48) },
+
+};
+
+uint32_t util_format_fourcc(const char *name)
+{
+	unsigned int i;
+
+	for (i = 0; i < ARRAY_SIZE(format_info); i++)
+		if (!strcmp(format_info[i].name, name))
+			return format_info[i].format;
+
+	return 0;
+}
+
+const struct util_format_info *util_format_info_find(uint32_t format)
+{
+	unsigned int i;
+
+	for (i = 0; i < ARRAY_SIZE(format_info); i++)
+		if (format_info[i].format == format)
+			return &format_info[i];
+
+	return NULL;
+}
diff --git a/tests/util/format.h b/tests/util/format.h
new file mode 100644
index 0000000..b847c9f
--- /dev/null
+++ b/tests/util/format.h
@@ -0,0 +1,66 @@
+/*
+ * Copyright 2008 Tungsten Graphics
+ *   Jakob Bornecrantz <jakob@tungstengraphics.com>
+ * Copyright 2008 Intel Corporation
+ *   Jesse Barnes <jesse.barnes@intel.com>
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the "Software"),
+ * to deal in the Software without restriction, including without limitation
+ * the rights to use, copy, modify, merge, publish, distribute, sublicense,
+ * and/or sell copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+ * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
+ * IN THE SOFTWARE.
+ */
+
+#ifndef UTIL_FORMAT_H
+#define UTIL_FORMAT_H
+
+struct util_color_component {
+	unsigned int length;
+	unsigned int offset;
+};
+
+struct util_rgb_info {
+	struct util_color_component red;
+	struct util_color_component green;
+	struct util_color_component blue;
+	struct util_color_component alpha;
+};
+
+enum util_yuv_order {
+	YUV_YCbCr = 1,
+	YUV_YCrCb = 2,
+	YUV_YC = 4,
+	YUV_CY = 8,
+};
+
+struct util_yuv_info {
+	enum util_yuv_order order;
+	unsigned int xsub;
+	unsigned int ysub;
+	unsigned int chroma_stride;
+};
+
+struct util_format_info {
+	uint32_t format;
+	const char *name;
+	unsigned int ncolors;
+	const struct util_rgb_info rgb;
+	const struct util_yuv_info yuv;
+};
+
+uint32_t util_format_fourcc(const char *name);
+const struct util_format_info *util_format_info_find(uint32_t format);
+
+#endif /* UTIL_FORMAT_H */
diff --git a/tests/util/kms.c b/tests/util/kms.c
new file mode 100644
index 0000000..34a8418
--- /dev/null
+++ b/tests/util/kms.c
@@ -0,0 +1,164 @@
+/*
+ * Copyright 2008 Tungsten Graphics
+ *   Jakob Bornecrantz <jakob@tungstengraphics.com>
+ * Copyright 2008 Intel Corporation
+ *   Jesse Barnes <jesse.barnes@intel.com>
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the "Software"),
+ * to deal in the Software without restriction, including without limitation
+ * the rights to use, copy, modify, merge, publish, distribute, sublicense,
+ * and/or sell copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+ * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
+ * IN THE SOFTWARE.
+ */
+
+/*
+ * This fairly simple test program dumps output in a similar format to the
+ * "xrandr" tool everyone knows & loves.  It's necessarily slightly different
+ * since the kernel separates outputs into encoder and connector structures,
+ * each with their own unique ID.  The program also allows test testing of the
+ * memory management and mode setting APIs by allowing the user to specify a
+ * connector and mode to use for mode setting.  If all works as expected, a
+ * blue background should be painted on the monitor attached to the specified
+ * connector after the selected mode is set.
+ *
+ * TODO: use cairo to write the mode info on the selected output once
+ *       the mode has been programmed, along with possible test patterns.
+ */
+
+#include <errno.h>
+#include <stdint.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+
+#include "xf86drm.h"
+#include "xf86drmMode.h"
+
+#include "common.h"
+
+struct type_name {
+	unsigned int type;
+	const char *name;
+};
+
+static const char *util_lookup_type_name(unsigned int type,
+					 const struct type_name *table,
+					 unsigned int count)
+{
+	unsigned int i;
+
+	for (i = 0; i < count; i++)
+		if (table[i].type == type)
+			return table[i].name;
+
+	return NULL;
+}
+
+static const struct type_name encoder_type_names[] = {
+	{ DRM_MODE_ENCODER_NONE, "none" },
+	{ DRM_MODE_ENCODER_DAC, "DAC" },
+	{ DRM_MODE_ENCODER_TMDS, "TMDS" },
+	{ DRM_MODE_ENCODER_LVDS, "LVDS" },
+	{ DRM_MODE_ENCODER_TVDAC, "TVDAC" },
+	{ DRM_MODE_ENCODER_VIRTUAL, "Virtual" },
+	{ DRM_MODE_ENCODER_DSI, "DSI" },
+	{ DRM_MODE_ENCODER_DPMST, "DPMST" },
+	{ DRM_MODE_ENCODER_DPI, "DPI" },
+};
+
+const char *util_lookup_encoder_type_name(unsigned int type)
+{
+	return util_lookup_type_name(type, encoder_type_names,
+				     ARRAY_SIZE(encoder_type_names));
+}
+
+static const struct type_name connector_status_names[] = {
+	{ DRM_MODE_CONNECTED, "connected" },
+	{ DRM_MODE_DISCONNECTED, "disconnected" },
+	{ DRM_MODE_UNKNOWNCONNECTION, "unknown" },
+};
+
+const char *util_lookup_connector_status_name(unsigned int status)
+{
+	return util_lookup_type_name(status, connector_status_names,
+				     ARRAY_SIZE(connector_status_names));
+}
+
+static const char * const modules[] = {
+	"i915",
+	"amdgpu",
+	"radeon",
+	"nouveau",
+	"vmwgfx",
+	"omapdrm",
+	"exynos",
+	"tilcdc",
+	"msm",
+	"sti",
+	"tegra",
+	"imx-drm",
+	"rockchip",
+	"atmel-hlcdc",
+	"fsl-dcu-drm",
+	"vc4",
+	"virtio_gpu",
+	"mediatek",
+	"meson",
+	"pl111",
+	"stm",
+	"sun4i-drm",
+	"armada-drm",
+	"komeda",
+	"imx-dcss",
+	"mxsfb-drm",
+	"simpledrm",
+	"imx-lcdif",
+	"vkms",
+};
+
+int util_open(const char *device, const char *module)
+{
+	int fd;
+
+	if (module) {
+		fd = drmOpen(module, device);
+		if (fd < 0) {
+			fprintf(stderr, "failed to open device '%s': %s\n",
+				module, strerror(errno));
+			return -errno;
+		}
+	} else {
+		unsigned int i;
+
+		for (i = 0; i < ARRAY_SIZE(modules); i++) {
+			printf("trying to open device '%s'...", modules[i]);
+
+			fd = drmOpen(modules[i], device);
+			if (fd < 0) {
+				printf("failed\n");
+			} else {
+				printf("done\n");
+				break;
+			}
+		}
+
+		if (fd < 0) {
+			fprintf(stderr, "no device found\n");
+			return -ENODEV;
+		}
+	}
+
+	return fd;
+}
diff --git a/tests/util/kms.h b/tests/util/kms.h
new file mode 100644
index 0000000..f79f461
--- /dev/null
+++ b/tests/util/kms.h
@@ -0,0 +1,34 @@
+/*
+ * Copyright 2008 Tungsten Graphics
+ *   Jakob Bornecrantz <jakob@tungstengraphics.com>
+ * Copyright 2008 Intel Corporation
+ *   Jesse Barnes <jesse.barnes@intel.com>
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the "Software"),
+ * to deal in the Software without restriction, including without limitation
+ * the rights to use, copy, modify, merge, publish, distribute, sublicense,
+ * and/or sell copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+ * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
+ * IN THE SOFTWARE.
+ */
+
+#ifndef UTIL_KMS_H
+#define UTIL_KMS_H
+
+const char *util_lookup_encoder_type_name(unsigned int type);
+const char *util_lookup_connector_status_name(unsigned int type);
+
+int util_open(const char *device, const char *module);
+
+#endif /* UTIL_KMS_H */
diff --git a/tests/util/meson.build b/tests/util/meson.build
new file mode 100644
index 0000000..7fa1a4b
--- /dev/null
+++ b/tests/util/meson.build
@@ -0,0 +1,28 @@
+# Copyright © 2017-2018 Intel Corporation
+
+# Permission is hereby granted, free of charge, to any person obtaining a copy
+# of this software and associated documentation files (the "Software"), to deal
+# in the Software without restriction, including without limitation the rights
+# to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+# copies of the Software, and to permit persons to whom the Software is
+# furnished to do so, subject to the following conditions:
+
+# The above copyright notice and this permission notice shall be included in
+# all copies or substantial portions of the Software.
+
+# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+# IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+# FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+# AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+# LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+# OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+# SOFTWARE.
+
+
+libutil = static_library(
+  'util',
+  [files('format.c', 'kms.c', 'pattern.c'), config_file],
+  include_directories : [inc_root, inc_drm],
+  link_with : libdrm,
+  dependencies : dep_cairo
+)
diff --git a/tests/util/pattern.c b/tests/util/pattern.c
new file mode 100644
index 0000000..2ff9c03
--- /dev/null
+++ b/tests/util/pattern.c
@@ -0,0 +1,1902 @@
+/*
+ * Copyright 2008 Tungsten Graphics
+ *   Jakob Bornecrantz <jakob@tungstengraphics.com>
+ * Copyright 2008 Intel Corporation
+ *   Jesse Barnes <jesse.barnes@intel.com>
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the "Software"),
+ * to deal in the Software without restriction, including without limitation
+ * the rights to use, copy, modify, merge, publish, distribute, sublicense,
+ * and/or sell copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+ * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
+ * IN THE SOFTWARE.
+ */
+
+#include <stdbool.h>
+#include <stdint.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+
+#include <drm_fourcc.h>
+
+#if HAVE_CAIRO
+#include <cairo.h>
+#include <math.h>
+#endif
+
+#include "common.h"
+#include "format.h"
+#include "pattern.h"
+
+struct color_rgb24 {
+	unsigned int value:24;
+} __attribute__((__packed__));
+
+struct color_yuv {
+	unsigned char y;
+	unsigned char u;
+	unsigned char v;
+};
+
+#define MAKE_YUV_601_Y(r, g, b) \
+	((( 66 * (r) + 129 * (g) +  25 * (b) + 128) >> 8) + 16)
+#define MAKE_YUV_601_U(r, g, b) \
+	(((-38 * (r) -  74 * (g) + 112 * (b) + 128) >> 8) + 128)
+#define MAKE_YUV_601_V(r, g, b) \
+	(((112 * (r) -  94 * (g) -  18 * (b) + 128) >> 8) + 128)
+
+#define MAKE_YUV_601(r, g, b) \
+	{ .y = MAKE_YUV_601_Y(r, g, b), \
+	  .u = MAKE_YUV_601_U(r, g, b), \
+	  .v = MAKE_YUV_601_V(r, g, b) }
+
+static inline uint16_t swap16(uint16_t x)
+{
+	return ((x & 0x00ffU) << 8) | ((x & 0xff00U) >> 8);
+}
+
+static inline uint32_t swap32(uint32_t x)
+{
+	return ((x & 0x000000ffU) << 24) |
+	       ((x & 0x0000ff00U) <<  8) |
+	       ((x & 0x00ff0000U) >>  8) |
+	       ((x & 0xff000000U) >> 24);
+}
+
+#ifdef HAVE_BIG_ENDIAN
+#define cpu_to_be16(x)			(x)
+#define cpu_to_le16(x)			swap16(x)
+#define cpu_to_le32(x)			swap32(x)
+#define fb_foreign_endian(format)	(!((format) & DRM_FORMAT_BIG_ENDIAN))
+#else
+#define cpu_to_be16(x)			swap16(x)
+#define cpu_to_le16(x)			(x)
+#define cpu_to_le32(x)			(x)
+#define fb_foreign_endian(format)	((format) & DRM_FORMAT_BIG_ENDIAN)
+#endif
+
+#define cpu_to_fb16(x)	(fb_be ? cpu_to_be16(x) : cpu_to_le16(x))
+
+/* This function takes 8-bit color values */
+static inline uint32_t shiftcolor8(const struct util_color_component *comp,
+				  uint32_t value)
+{
+	value &= 0xff;
+	/* Fill the low bits with the high bits. */
+	value = (value << 8) | value;
+	/* Shift down to remove unwanted low bits */
+	value = value >> (16 - comp->length);
+	/* Shift back up to where the value should be */
+	return value << comp->offset;
+}
+
+/* This function takes 10-bit color values */
+static inline uint32_t shiftcolor10(const struct util_color_component *comp,
+				    uint32_t value)
+{
+	value &= 0x3ff;
+	/* Fill the low bits with the high bits. */
+	value = (value << 6) | (value >> 4);
+	/* Shift down to remove unwanted low bits */
+	value = value >> (16 - comp->length);
+	/* Shift back up to where the value should be */
+	return value << comp->offset;
+}
+
+/* This function takes 16-bit color values */
+static inline uint64_t shiftcolor16(const struct util_color_component *comp,
+				    uint64_t value)
+{
+	value &= 0xffff;
+	/* Shift down to remove unwanted low bits */
+	value = value >> (16 - comp->length);
+	/* Shift back up to where the value should be */
+	return value << comp->offset;
+}
+
+#define MAKE_RGBA10(rgb, r, g, b, a) \
+	(shiftcolor10(&(rgb)->red, (r)) | \
+	 shiftcolor10(&(rgb)->green, (g)) | \
+	 shiftcolor10(&(rgb)->blue, (b)) | \
+	 shiftcolor10(&(rgb)->alpha, (a)))
+
+#define MAKE_RGBA(rgb, r, g, b, a) \
+	(shiftcolor8(&(rgb)->red, (r)) | \
+	 shiftcolor8(&(rgb)->green, (g)) | \
+	 shiftcolor8(&(rgb)->blue, (b)) | \
+	 shiftcolor8(&(rgb)->alpha, (a)))
+
+#define MAKE_RGB24(rgb, r, g, b) \
+	{ .value = MAKE_RGBA(rgb, r, g, b, 0) }
+
+
+/**
+  * Takes a uint16_t, divides by 65536, converts the infinite-precision
+  * result to fp16 with round-to-zero.
+  *
+  * Copied from mesa:src/util/half_float.c
+  */
+static uint16_t uint16_div_64k_to_half(uint16_t v)
+{
+	/* Zero or subnormal. Set the mantissa to (v << 8) and return. */
+	if (v < 4)
+		return v << 8;
+
+	/* Count the leading 0s in the uint16_t */
+	int n = __builtin_clz(v) - 16;
+
+	/* Shift the mantissa up so bit 16 is the hidden 1 bit,
+	 * mask it off, then shift back down to 10 bits
+	 */
+	int m = ( ((uint32_t)v << (n + 1)) & 0xffff ) >> 6;
+
+	/*  (0{n} 1 X{15-n}) * 2^-16
+	 * = 1.X * 2^(15-n-16)
+	 * = 1.X * 2^(14-n - 15)
+	 * which is the FP16 form with e = 14 - n
+	 */
+	int e = 14 - n;
+
+	return (e << 10) | m;
+}
+
+#define MAKE_RGBA8FP16(rgb, r, g, b, a) \
+	(shiftcolor16(&(rgb)->red, uint16_div_64k_to_half((r) << 8)) | \
+	 shiftcolor16(&(rgb)->green, uint16_div_64k_to_half((g) << 8)) | \
+	 shiftcolor16(&(rgb)->blue, uint16_div_64k_to_half((b) << 8)) | \
+	 shiftcolor16(&(rgb)->alpha, uint16_div_64k_to_half((a) << 8)))
+
+#define MAKE_RGBA10FP16(rgb, r, g, b, a) \
+	(shiftcolor16(&(rgb)->red, uint16_div_64k_to_half((r) << 6)) | \
+	 shiftcolor16(&(rgb)->green, uint16_div_64k_to_half((g) << 6)) | \
+	 shiftcolor16(&(rgb)->blue, uint16_div_64k_to_half((b) << 6)) | \
+	 shiftcolor16(&(rgb)->alpha, uint16_div_64k_to_half((a) << 6)))
+
+static void fill_smpte_yuv_planar(const struct util_yuv_info *yuv,
+				  unsigned char *y_mem, unsigned char *u_mem,
+				  unsigned char *v_mem, unsigned int width,
+				  unsigned int height, unsigned int stride)
+{
+	const struct color_yuv colors_top[] = {
+		MAKE_YUV_601(192, 192, 192),	/* grey */
+		MAKE_YUV_601(192, 192, 0),	/* yellow */
+		MAKE_YUV_601(0, 192, 192),	/* cyan */
+		MAKE_YUV_601(0, 192, 0),	/* green */
+		MAKE_YUV_601(192, 0, 192),	/* magenta */
+		MAKE_YUV_601(192, 0, 0),	/* red */
+		MAKE_YUV_601(0, 0, 192),	/* blue */
+	};
+	const struct color_yuv colors_middle[] = {
+		MAKE_YUV_601(0, 0, 192),	/* blue */
+		MAKE_YUV_601(19, 19, 19),	/* black */
+		MAKE_YUV_601(192, 0, 192),	/* magenta */
+		MAKE_YUV_601(19, 19, 19),	/* black */
+		MAKE_YUV_601(0, 192, 192),	/* cyan */
+		MAKE_YUV_601(19, 19, 19),	/* black */
+		MAKE_YUV_601(192, 192, 192),	/* grey */
+	};
+	const struct color_yuv colors_bottom[] = {
+		MAKE_YUV_601(0, 33, 76),	/* in-phase */
+		MAKE_YUV_601(255, 255, 255),	/* super white */
+		MAKE_YUV_601(50, 0, 106),	/* quadrature */
+		MAKE_YUV_601(19, 19, 19),	/* black */
+		MAKE_YUV_601(9, 9, 9),		/* 3.5% */
+		MAKE_YUV_601(19, 19, 19),	/* 7.5% */
+		MAKE_YUV_601(29, 29, 29),	/* 11.5% */
+		MAKE_YUV_601(19, 19, 19),	/* black */
+	};
+	unsigned int cs = yuv->chroma_stride;
+	unsigned int xsub = yuv->xsub;
+	unsigned int ysub = yuv->ysub;
+	unsigned int x;
+	unsigned int y;
+
+	/* Luma */
+	for (y = 0; y < height * 6 / 9; ++y) {
+		for (x = 0; x < width; ++x)
+			y_mem[x] = colors_top[x * 7 / width].y;
+		y_mem += stride;
+	}
+
+	for (; y < height * 7 / 9; ++y) {
+		for (x = 0; x < width; ++x)
+			y_mem[x] = colors_middle[x * 7 / width].y;
+		y_mem += stride;
+	}
+
+	for (; y < height; ++y) {
+		for (x = 0; x < width * 5 / 7; ++x)
+			y_mem[x] = colors_bottom[x * 4 / (width * 5 / 7)].y;
+		for (; x < width * 6 / 7; ++x)
+			y_mem[x] = colors_bottom[(x - width * 5 / 7) * 3
+						 / (width / 7) + 4].y;
+		for (; x < width; ++x)
+			y_mem[x] = colors_bottom[7].y;
+		y_mem += stride;
+	}
+
+	/* Chroma */
+	for (y = 0; y < height / ysub * 6 / 9; ++y) {
+		for (x = 0; x < width; x += xsub) {
+			u_mem[x*cs/xsub] = colors_top[x * 7 / width].u;
+			v_mem[x*cs/xsub] = colors_top[x * 7 / width].v;
+		}
+		u_mem += stride * cs / xsub;
+		v_mem += stride * cs / xsub;
+	}
+
+	for (; y < height / ysub * 7 / 9; ++y) {
+		for (x = 0; x < width; x += xsub) {
+			u_mem[x*cs/xsub] = colors_middle[x * 7 / width].u;
+			v_mem[x*cs/xsub] = colors_middle[x * 7 / width].v;
+		}
+		u_mem += stride * cs / xsub;
+		v_mem += stride * cs / xsub;
+	}
+
+	for (; y < height / ysub; ++y) {
+		for (x = 0; x < width * 5 / 7; x += xsub) {
+			u_mem[x*cs/xsub] =
+				colors_bottom[x * 4 / (width * 5 / 7)].u;
+			v_mem[x*cs/xsub] =
+				colors_bottom[x * 4 / (width * 5 / 7)].v;
+		}
+		for (; x < width * 6 / 7; x += xsub) {
+			u_mem[x*cs/xsub] = colors_bottom[(x - width * 5 / 7) *
+							 3 / (width / 7) + 4].u;
+			v_mem[x*cs/xsub] = colors_bottom[(x - width * 5 / 7) *
+							 3 / (width / 7) + 4].v;
+		}
+		for (; x < width; x += xsub) {
+			u_mem[x*cs/xsub] = colors_bottom[7].u;
+			v_mem[x*cs/xsub] = colors_bottom[7].v;
+		}
+		u_mem += stride * cs / xsub;
+		v_mem += stride * cs / xsub;
+	}
+}
+
+static void write_pixels_10bpp(unsigned char *mem,
+			       unsigned short a,
+			       unsigned short b,
+			       unsigned short c,
+			       unsigned short d)
+{
+	  mem[0] = (a & 0xff);
+	  mem[1] = ((a >> 8) & 0x3) | ((b & 0x3f) << 2);
+	  mem[2] = ((b >> 6) & 0xf) | ((c & 0xf) << 4);
+	  mem[3] = ((c >> 4) & 0x3f) | ((d & 0x3) << 6);
+	  mem[4] = ((d >> 2) & 0xff);
+}
+
+static void fill_smpte_yuv_planar_10bpp(const struct util_yuv_info *yuv,
+					unsigned char *y_mem,
+					unsigned char *uv_mem,
+					unsigned int width,
+					unsigned int height,
+					unsigned int stride)
+{
+	const struct color_yuv colors_top[] = {
+		MAKE_YUV_601(192, 192, 192),	/* grey */
+		MAKE_YUV_601(192, 192, 0),	/* yellow */
+		MAKE_YUV_601(0, 192, 192),	/* cyan */
+		MAKE_YUV_601(0, 192, 0),	/* green */
+		MAKE_YUV_601(192, 0, 192),	/* magenta */
+		MAKE_YUV_601(192, 0, 0),	/* red */
+		MAKE_YUV_601(0, 0, 192),	/* blue */
+	};
+	const struct color_yuv colors_middle[] = {
+		MAKE_YUV_601(0, 0, 192),	/* blue */
+		MAKE_YUV_601(19, 19, 19),	/* black */
+		MAKE_YUV_601(192, 0, 192),	/* magenta */
+		MAKE_YUV_601(19, 19, 19),	/* black */
+		MAKE_YUV_601(0, 192, 192),	/* cyan */
+		MAKE_YUV_601(19, 19, 19),	/* black */
+		MAKE_YUV_601(192, 192, 192),	/* grey */
+	};
+	const struct color_yuv colors_bottom[] = {
+		MAKE_YUV_601(0, 33, 76),	/* in-phase */
+		MAKE_YUV_601(255, 255, 255),	/* super white */
+		MAKE_YUV_601(50, 0, 106),	/* quadrature */
+		MAKE_YUV_601(19, 19, 19),	/* black */
+		MAKE_YUV_601(9, 9, 9),		/* 3.5% */
+		MAKE_YUV_601(19, 19, 19),	/* 7.5% */
+		MAKE_YUV_601(29, 29, 29),	/* 11.5% */
+		MAKE_YUV_601(19, 19, 19),	/* black */
+	};
+	unsigned int cs = yuv->chroma_stride;
+	unsigned int xsub = yuv->xsub;
+	unsigned int ysub = yuv->ysub;
+	unsigned int xstep = cs * xsub;
+	unsigned int x;
+	unsigned int y;
+
+	/* Luma */
+	for (y = 0; y < height * 6 / 9; ++y) {
+		for (x = 0; x < width; x += 4)
+			write_pixels_10bpp(&y_mem[(x * 5) / 4],
+				colors_top[(x+0) * 7 / width].y << 2,
+				colors_top[(x+1) * 7 / width].y << 2,
+				colors_top[(x+2) * 7 / width].y << 2,
+				colors_top[(x+3) * 7 / width].y << 2);
+		y_mem += stride;
+	}
+
+	for (; y < height * 7 / 9; ++y) {
+		for (x = 0; x < width; x += 4)
+			write_pixels_10bpp(&y_mem[(x * 5) / 4],
+				colors_middle[(x+0) * 7 / width].y << 2,
+				colors_middle[(x+1) * 7 / width].y << 2,
+				colors_middle[(x+2) * 7 / width].y << 2,
+				colors_middle[(x+3) * 7 / width].y << 2);
+		y_mem += stride;
+	}
+
+	for (; y < height; ++y) {
+		for (x = 0; x < width * 5 / 7; x += 4)
+			write_pixels_10bpp(&y_mem[(x * 5) / 4],
+				colors_bottom[(x+0) * 4 / (width * 5 / 7)].y << 2,
+				colors_bottom[(x+1) * 4 / (width * 5 / 7)].y << 2,
+				colors_bottom[(x+2) * 4 / (width * 5 / 7)].y << 2,
+				colors_bottom[(x+3) * 4 / (width * 5 / 7)].y << 2);
+		for (; x < width * 6 / 7; x += 4)
+			write_pixels_10bpp(&y_mem[(x * 5) / 4],
+				colors_bottom[((x+0) - width * 5 / 7) * 3 / (width / 7) + 4].y << 2,
+				colors_bottom[((x+1) - width * 5 / 7) * 3 / (width / 7) + 4].y << 2,
+				colors_bottom[((x+2) - width * 5 / 7) * 3 / (width / 7) + 4].y << 2,
+				colors_bottom[((x+3) - width * 5 / 7) * 3 / (width / 7) + 4].y << 2);
+		for (; x < width; x += 4)
+			write_pixels_10bpp(&y_mem[(x * 5) / 4],
+				colors_bottom[7].y << 2,
+				colors_bottom[7].y << 2,
+				colors_bottom[7].y << 2,
+				colors_bottom[7].y << 2);
+		y_mem += stride;
+	}
+
+	/* Chroma */
+	for (y = 0; y < height * 6 / 9; y += ysub) {
+		for (x = 0; x < width; x += xstep)
+			write_pixels_10bpp(&uv_mem[(x * 5) / xstep],
+				colors_top[(x+0) * 7 / width].u << 2,
+				colors_top[(x+0) * 7 / width].v << 2,
+				colors_top[(x+xsub) * 7 / width].u << 2,
+				colors_top[(x+xsub) * 7 / width].v << 2);
+		uv_mem += stride * cs / xsub;
+	}
+
+	for (; y < height * 7 / 9; y += ysub) {
+		for (x = 0; x < width; x += xstep)
+			write_pixels_10bpp(&uv_mem[(x * 5) / xstep],
+				colors_middle[(x+0) * 7 / width].u << 2,
+				colors_middle[(x+0) * 7 / width].v << 2,
+				colors_middle[(x+xsub) * 7 / width].u << 2,
+				colors_middle[(x+xsub) * 7 / width].v << 2);
+		uv_mem += stride * cs / xsub;
+	}
+
+	for (; y < height; y += ysub) {
+		for (x = 0; x < width * 5 / 7; x += xstep)
+			write_pixels_10bpp(&uv_mem[(x * 5) / xstep],
+				colors_bottom[(x+0) * 4 / (width * 5 / 7)].u << 2,
+				colors_bottom[(x+0) * 4 / (width * 5 / 7)].v << 2,
+				colors_bottom[(x+xsub) * 4 / (width * 5 / 7)].u << 2,
+				colors_bottom[(x+xsub) * 4 / (width * 5 / 7)].v << 2);
+		for (; x < width * 6 / 7; x += xstep)
+			write_pixels_10bpp(&uv_mem[(x * 5) / xstep],
+				colors_bottom[((x+0) - width * 5 / 7) * 3 / (width / 7) + 4].u << 2,
+				colors_bottom[((x+0) - width * 5 / 7) * 3 / (width / 7) + 4].v << 2,
+				colors_bottom[((x+xsub) - width * 5 / 7) * 3 / (width / 7) + 4].u << 2,
+				colors_bottom[((x+xsub) - width * 5 / 7) * 3 / (width / 7) + 4].v << 2);
+		for (; x < width; x += xstep)
+			write_pixels_10bpp(&uv_mem[(x * 5) / xstep],
+				colors_bottom[7].u << 2,
+				colors_bottom[7].v << 2,
+				colors_bottom[7].u << 2,
+				colors_bottom[7].v << 2);
+		uv_mem += stride * cs / xsub;
+	}
+}
+
+static void fill_smpte_yuv_packed(const struct util_yuv_info *yuv, void *mem,
+				  unsigned int width, unsigned int height,
+				  unsigned int stride)
+{
+	const struct color_yuv colors_top[] = {
+		MAKE_YUV_601(192, 192, 192),	/* grey */
+		MAKE_YUV_601(192, 192, 0),	/* yellow */
+		MAKE_YUV_601(0, 192, 192),	/* cyan */
+		MAKE_YUV_601(0, 192, 0),	/* green */
+		MAKE_YUV_601(192, 0, 192),	/* magenta */
+		MAKE_YUV_601(192, 0, 0),	/* red */
+		MAKE_YUV_601(0, 0, 192),	/* blue */
+	};
+	const struct color_yuv colors_middle[] = {
+		MAKE_YUV_601(0, 0, 192),	/* blue */
+		MAKE_YUV_601(19, 19, 19),	/* black */
+		MAKE_YUV_601(192, 0, 192),	/* magenta */
+		MAKE_YUV_601(19, 19, 19),	/* black */
+		MAKE_YUV_601(0, 192, 192),	/* cyan */
+		MAKE_YUV_601(19, 19, 19),	/* black */
+		MAKE_YUV_601(192, 192, 192),	/* grey */
+	};
+	const struct color_yuv colors_bottom[] = {
+		MAKE_YUV_601(0, 33, 76),	/* in-phase */
+		MAKE_YUV_601(255, 255, 255),	/* super white */
+		MAKE_YUV_601(50, 0, 106),	/* quadrature */
+		MAKE_YUV_601(19, 19, 19),	/* black */
+		MAKE_YUV_601(9, 9, 9),		/* 3.5% */
+		MAKE_YUV_601(19, 19, 19),	/* 7.5% */
+		MAKE_YUV_601(29, 29, 29),	/* 11.5% */
+		MAKE_YUV_601(19, 19, 19),	/* black */
+	};
+	unsigned char *y_mem = (yuv->order & YUV_YC) ? mem : mem + 1;
+	unsigned char *c_mem = (yuv->order & YUV_CY) ? mem : mem + 1;
+	unsigned int u = (yuv->order & YUV_YCrCb) ? 2 : 0;
+	unsigned int v = (yuv->order & YUV_YCbCr) ? 2 : 0;
+	unsigned int x;
+	unsigned int y;
+
+	/* Luma */
+	for (y = 0; y < height * 6 / 9; ++y) {
+		for (x = 0; x < width; ++x)
+			y_mem[2*x] = colors_top[x * 7 / width].y;
+		y_mem += stride;
+	}
+
+	for (; y < height * 7 / 9; ++y) {
+		for (x = 0; x < width; ++x)
+			y_mem[2*x] = colors_middle[x * 7 / width].y;
+		y_mem += stride;
+	}
+
+	for (; y < height; ++y) {
+		for (x = 0; x < width * 5 / 7; ++x)
+			y_mem[2*x] = colors_bottom[x * 4 / (width * 5 / 7)].y;
+		for (; x < width * 6 / 7; ++x)
+			y_mem[2*x] = colors_bottom[(x - width * 5 / 7) * 3
+						   / (width / 7) + 4].y;
+		for (; x < width; ++x)
+			y_mem[2*x] = colors_bottom[7].y;
+		y_mem += stride;
+	}
+
+	/* Chroma */
+	for (y = 0; y < height * 6 / 9; ++y) {
+		for (x = 0; x < width; x += 2) {
+			c_mem[2*x+u] = colors_top[x * 7 / width].u;
+			c_mem[2*x+v] = colors_top[x * 7 / width].v;
+		}
+		c_mem += stride;
+	}
+
+	for (; y < height * 7 / 9; ++y) {
+		for (x = 0; x < width; x += 2) {
+			c_mem[2*x+u] = colors_middle[x * 7 / width].u;
+			c_mem[2*x+v] = colors_middle[x * 7 / width].v;
+		}
+		c_mem += stride;
+	}
+
+	for (; y < height; ++y) {
+		for (x = 0; x < width * 5 / 7; x += 2) {
+			c_mem[2*x+u] = colors_bottom[x * 4 / (width * 5 / 7)].u;
+			c_mem[2*x+v] = colors_bottom[x * 4 / (width * 5 / 7)].v;
+		}
+		for (; x < width * 6 / 7; x += 2) {
+			c_mem[2*x+u] = colors_bottom[(x - width * 5 / 7) *
+						     3 / (width / 7) + 4].u;
+			c_mem[2*x+v] = colors_bottom[(x - width * 5 / 7) *
+						     3 / (width / 7) + 4].v;
+		}
+		for (; x < width; x += 2) {
+			c_mem[2*x+u] = colors_bottom[7].u;
+			c_mem[2*x+v] = colors_bottom[7].v;
+		}
+		c_mem += stride;
+	}
+}
+
+static void fill_smpte_rgb16(const struct util_rgb_info *rgb, void *mem,
+			     unsigned int width, unsigned int height,
+			     unsigned int stride, bool fb_be)
+{
+	const uint16_t colors_top[] = {
+		MAKE_RGBA(rgb, 192, 192, 192, 255),	/* grey */
+		MAKE_RGBA(rgb, 192, 192, 0, 255),	/* yellow */
+		MAKE_RGBA(rgb, 0, 192, 192, 255),	/* cyan */
+		MAKE_RGBA(rgb, 0, 192, 0, 255),		/* green */
+		MAKE_RGBA(rgb, 192, 0, 192, 255),	/* magenta */
+		MAKE_RGBA(rgb, 192, 0, 0, 255),		/* red */
+		MAKE_RGBA(rgb, 0, 0, 192, 255),		/* blue */
+	};
+	const uint16_t colors_middle[] = {
+		MAKE_RGBA(rgb, 0, 0, 192, 127),		/* blue */
+		MAKE_RGBA(rgb, 19, 19, 19, 127),	/* black */
+		MAKE_RGBA(rgb, 192, 0, 192, 127),	/* magenta */
+		MAKE_RGBA(rgb, 19, 19, 19, 127),	/* black */
+		MAKE_RGBA(rgb, 0, 192, 192, 127),	/* cyan */
+		MAKE_RGBA(rgb, 19, 19, 19, 127),	/* black */
+		MAKE_RGBA(rgb, 192, 192, 192, 127),	/* grey */
+	};
+	const uint16_t colors_bottom[] = {
+		MAKE_RGBA(rgb, 0, 33, 76, 255),		/* in-phase */
+		MAKE_RGBA(rgb, 255, 255, 255, 255),	/* super white */
+		MAKE_RGBA(rgb, 50, 0, 106, 255),	/* quadrature */
+		MAKE_RGBA(rgb, 19, 19, 19, 255),	/* black */
+		MAKE_RGBA(rgb, 9, 9, 9, 255),		/* 3.5% */
+		MAKE_RGBA(rgb, 19, 19, 19, 255),	/* 7.5% */
+		MAKE_RGBA(rgb, 29, 29, 29, 255),	/* 11.5% */
+		MAKE_RGBA(rgb, 19, 19, 19, 255),	/* black */
+	};
+	unsigned int x;
+	unsigned int y;
+
+	for (y = 0; y < height * 6 / 9; ++y) {
+		for (x = 0; x < width; ++x)
+			((uint16_t *)mem)[x] = cpu_to_fb16(colors_top[x * 7 / width]);
+		mem += stride;
+	}
+
+	for (; y < height * 7 / 9; ++y) {
+		for (x = 0; x < width; ++x)
+			((uint16_t *)mem)[x] = cpu_to_fb16(colors_middle[x * 7 / width]);
+		mem += stride;
+	}
+
+	for (; y < height; ++y) {
+		for (x = 0; x < width * 5 / 7; ++x)
+			((uint16_t *)mem)[x] =
+				cpu_to_fb16(colors_bottom[x * 4 / (width * 5 / 7)]);
+		for (; x < width * 6 / 7; ++x)
+			((uint16_t *)mem)[x] =
+				cpu_to_fb16(colors_bottom[(x - width * 5 / 7) * 3
+							  / (width / 7) + 4]);
+		for (; x < width; ++x)
+			((uint16_t *)mem)[x] = cpu_to_fb16(colors_bottom[7]);
+		mem += stride;
+	}
+}
+
+static void fill_smpte_rgb24(const struct util_rgb_info *rgb, void *mem,
+			     unsigned int width, unsigned int height,
+			     unsigned int stride)
+{
+	const struct color_rgb24 colors_top[] = {
+		MAKE_RGB24(rgb, 192, 192, 192),	/* grey */
+		MAKE_RGB24(rgb, 192, 192, 0),	/* yellow */
+		MAKE_RGB24(rgb, 0, 192, 192),	/* cyan */
+		MAKE_RGB24(rgb, 0, 192, 0),	/* green */
+		MAKE_RGB24(rgb, 192, 0, 192),	/* magenta */
+		MAKE_RGB24(rgb, 192, 0, 0),	/* red */
+		MAKE_RGB24(rgb, 0, 0, 192),	/* blue */
+	};
+	const struct color_rgb24 colors_middle[] = {
+		MAKE_RGB24(rgb, 0, 0, 192),	/* blue */
+		MAKE_RGB24(rgb, 19, 19, 19),	/* black */
+		MAKE_RGB24(rgb, 192, 0, 192),	/* magenta */
+		MAKE_RGB24(rgb, 19, 19, 19),	/* black */
+		MAKE_RGB24(rgb, 0, 192, 192),	/* cyan */
+		MAKE_RGB24(rgb, 19, 19, 19),	/* black */
+		MAKE_RGB24(rgb, 192, 192, 192),	/* grey */
+	};
+	const struct color_rgb24 colors_bottom[] = {
+		MAKE_RGB24(rgb, 0, 33, 76),	/* in-phase */
+		MAKE_RGB24(rgb, 255, 255, 255),	/* super white */
+		MAKE_RGB24(rgb, 50, 0, 106),	/* quadrature */
+		MAKE_RGB24(rgb, 19, 19, 19),	/* black */
+		MAKE_RGB24(rgb, 9, 9, 9),	/* 3.5% */
+		MAKE_RGB24(rgb, 19, 19, 19),	/* 7.5% */
+		MAKE_RGB24(rgb, 29, 29, 29),	/* 11.5% */
+		MAKE_RGB24(rgb, 19, 19, 19),	/* black */
+	};
+	unsigned int x;
+	unsigned int y;
+
+	for (y = 0; y < height * 6 / 9; ++y) {
+		for (x = 0; x < width; ++x)
+			((struct color_rgb24 *)mem)[x] =
+				colors_top[x * 7 / width];
+		mem += stride;
+	}
+
+	for (; y < height * 7 / 9; ++y) {
+		for (x = 0; x < width; ++x)
+			((struct color_rgb24 *)mem)[x] =
+				colors_middle[x * 7 / width];
+		mem += stride;
+	}
+
+	for (; y < height; ++y) {
+		for (x = 0; x < width * 5 / 7; ++x)
+			((struct color_rgb24 *)mem)[x] =
+				colors_bottom[x * 4 / (width * 5 / 7)];
+		for (; x < width * 6 / 7; ++x)
+			((struct color_rgb24 *)mem)[x] =
+				colors_bottom[(x - width * 5 / 7) * 3
+					      / (width / 7) + 4];
+		for (; x < width; ++x)
+			((struct color_rgb24 *)mem)[x] = colors_bottom[7];
+		mem += stride;
+	}
+}
+
+static void fill_smpte_rgb32(const struct util_rgb_info *rgb, void *mem,
+			     unsigned int width, unsigned int height,
+			     unsigned int stride)
+{
+	const uint32_t colors_top[] = {
+		MAKE_RGBA(rgb, 192, 192, 192, 255),	/* grey */
+		MAKE_RGBA(rgb, 192, 192, 0, 255),	/* yellow */
+		MAKE_RGBA(rgb, 0, 192, 192, 255),	/* cyan */
+		MAKE_RGBA(rgb, 0, 192, 0, 255),		/* green */
+		MAKE_RGBA(rgb, 192, 0, 192, 255),	/* magenta */
+		MAKE_RGBA(rgb, 192, 0, 0, 255),		/* red */
+		MAKE_RGBA(rgb, 0, 0, 192, 255),		/* blue */
+	};
+	const uint32_t colors_middle[] = {
+		MAKE_RGBA(rgb, 0, 0, 192, 127),		/* blue */
+		MAKE_RGBA(rgb, 19, 19, 19, 127),	/* black */
+		MAKE_RGBA(rgb, 192, 0, 192, 127),	/* magenta */
+		MAKE_RGBA(rgb, 19, 19, 19, 127),	/* black */
+		MAKE_RGBA(rgb, 0, 192, 192, 127),	/* cyan */
+		MAKE_RGBA(rgb, 19, 19, 19, 127),	/* black */
+		MAKE_RGBA(rgb, 192, 192, 192, 127),	/* grey */
+	};
+	const uint32_t colors_bottom[] = {
+		MAKE_RGBA(rgb, 0, 33, 76, 255),		/* in-phase */
+		MAKE_RGBA(rgb, 255, 255, 255, 255),	/* super white */
+		MAKE_RGBA(rgb, 50, 0, 106, 255),	/* quadrature */
+		MAKE_RGBA(rgb, 19, 19, 19, 255),	/* black */
+		MAKE_RGBA(rgb, 9, 9, 9, 255),		/* 3.5% */
+		MAKE_RGBA(rgb, 19, 19, 19, 255),	/* 7.5% */
+		MAKE_RGBA(rgb, 29, 29, 29, 255),	/* 11.5% */
+		MAKE_RGBA(rgb, 19, 19, 19, 255),	/* black */
+	};
+	unsigned int x;
+	unsigned int y;
+
+	for (y = 0; y < height * 6 / 9; ++y) {
+		for (x = 0; x < width; ++x)
+			((uint32_t *)mem)[x] = cpu_to_le32(colors_top[x * 7 / width]);
+		mem += stride;
+	}
+
+	for (; y < height * 7 / 9; ++y) {
+		for (x = 0; x < width; ++x)
+			((uint32_t *)mem)[x] = cpu_to_le32(colors_middle[x * 7 / width]);
+		mem += stride;
+	}
+
+	for (; y < height; ++y) {
+		for (x = 0; x < width * 5 / 7; ++x)
+			((uint32_t *)mem)[x] =
+				cpu_to_le32(colors_bottom[x * 4 / (width * 5 / 7)]);
+		for (; x < width * 6 / 7; ++x)
+			((uint32_t *)mem)[x] =
+				cpu_to_le32(colors_bottom[(x - width * 5 / 7) * 3
+							  / (width / 7) + 4]);
+		for (; x < width; ++x)
+			((uint32_t *)mem)[x] = cpu_to_le32(colors_bottom[7]);
+		mem += stride;
+	}
+}
+
+static void fill_smpte_rgb16fp(const struct util_rgb_info *rgb, void *mem,
+			       unsigned int width, unsigned int height,
+			       unsigned int stride)
+{
+	const uint64_t colors_top[] = {
+		MAKE_RGBA8FP16(rgb, 192, 192, 192, 255),/* grey */
+		MAKE_RGBA8FP16(rgb, 192, 192, 0, 255),	/* yellow */
+		MAKE_RGBA8FP16(rgb, 0, 192, 192, 255),	/* cyan */
+		MAKE_RGBA8FP16(rgb, 0, 192, 0, 255),	/* green */
+		MAKE_RGBA8FP16(rgb, 192, 0, 192, 255),	/* magenta */
+		MAKE_RGBA8FP16(rgb, 192, 0, 0, 255),	/* red */
+		MAKE_RGBA8FP16(rgb, 0, 0, 192, 255),	/* blue */
+	};
+	const uint64_t colors_middle[] = {
+		MAKE_RGBA8FP16(rgb, 0, 0, 192, 127),	/* blue */
+		MAKE_RGBA8FP16(rgb, 19, 19, 19, 127),	/* black */
+		MAKE_RGBA8FP16(rgb, 192, 0, 192, 127),	/* magenta */
+		MAKE_RGBA8FP16(rgb, 19, 19, 19, 127),	/* black */
+		MAKE_RGBA8FP16(rgb, 0, 192, 192, 127),	/* cyan */
+		MAKE_RGBA8FP16(rgb, 19, 19, 19, 127),	/* black */
+		MAKE_RGBA8FP16(rgb, 192, 192, 192, 127),/* grey */
+	};
+	const uint64_t colors_bottom[] = {
+		MAKE_RGBA8FP16(rgb, 0, 33, 76, 255),	/* in-phase */
+		MAKE_RGBA8FP16(rgb, 255, 255, 255, 255),/* super white */
+		MAKE_RGBA8FP16(rgb, 50, 0, 106, 255),	/* quadrature */
+		MAKE_RGBA8FP16(rgb, 19, 19, 19, 255),	/* black */
+		MAKE_RGBA8FP16(rgb, 9, 9, 9, 255),	/* 3.5% */
+		MAKE_RGBA8FP16(rgb, 19, 19, 19, 255),	/* 7.5% */
+		MAKE_RGBA8FP16(rgb, 29, 29, 29, 255),	/* 11.5% */
+		MAKE_RGBA8FP16(rgb, 19, 19, 19, 255),	/* black */
+	};
+	unsigned int x;
+	unsigned int y;
+
+	for (y = 0; y < height * 6 / 9; ++y) {
+		for (x = 0; x < width; ++x)
+			((uint64_t *)mem)[x] = colors_top[x * 7 / width];
+		mem += stride;
+	}
+
+	for (; y < height * 7 / 9; ++y) {
+		for (x = 0; x < width; ++x)
+			((uint64_t *)mem)[x] = colors_middle[x * 7 / width];
+		mem += stride;
+	}
+
+	for (; y < height; ++y) {
+		for (x = 0; x < width * 5 / 7; ++x)
+			((uint64_t *)mem)[x] =
+				colors_bottom[x * 4 / (width * 5 / 7)];
+		for (; x < width * 6 / 7; ++x)
+			((uint64_t *)mem)[x] =
+				colors_bottom[(x - width * 5 / 7) * 3
+					      / (width / 7) + 4];
+		for (; x < width; ++x)
+			((uint64_t *)mem)[x] = colors_bottom[7];
+		mem += stride;
+	}
+}
+
+enum smpte_colors {
+	SMPTE_COLOR_GREY,
+	SMPTE_COLOR_YELLOW,
+	SMPTE_COLOR_CYAN,
+	SMPTE_COLOR_GREEN,
+	SMPTE_COLOR_MAGENTA,
+	SMPTE_COLOR_RED,
+	SMPTE_COLOR_BLUE,
+	SMPTE_COLOR_BLACK,
+	SMPTE_COLOR_IN_PHASE,
+	SMPTE_COLOR_SUPER_WHITE,
+	SMPTE_COLOR_QUADRATURE,
+	SMPTE_COLOR_3PC5,
+	SMPTE_COLOR_11PC5,
+};
+
+static unsigned int smpte_top[7] = {
+	SMPTE_COLOR_GREY,
+	SMPTE_COLOR_YELLOW,
+	SMPTE_COLOR_CYAN,
+	SMPTE_COLOR_GREEN,
+	SMPTE_COLOR_MAGENTA,
+	SMPTE_COLOR_RED,
+	SMPTE_COLOR_BLUE,
+};
+
+static unsigned int smpte_middle[7] = {
+	SMPTE_COLOR_BLUE,
+	SMPTE_COLOR_BLACK,
+	SMPTE_COLOR_MAGENTA,
+	SMPTE_COLOR_BLACK,
+	SMPTE_COLOR_CYAN,
+	SMPTE_COLOR_BLACK,
+	SMPTE_COLOR_GREY,
+};
+
+static unsigned int smpte_bottom[8] = {
+	SMPTE_COLOR_IN_PHASE,
+	SMPTE_COLOR_SUPER_WHITE,
+	SMPTE_COLOR_QUADRATURE,
+	SMPTE_COLOR_BLACK,
+	SMPTE_COLOR_3PC5,
+	SMPTE_COLOR_BLACK,
+	SMPTE_COLOR_11PC5,
+	SMPTE_COLOR_BLACK,
+};
+
+#define EXPAND_COLOR(r, g, b)	{ (r) * 0x101, (g) * 0x101, (b) * 0x101 }
+
+static const struct drm_color_lut bw_color_lut[] = {
+	EXPAND_COLOR(  0,   0,   0),	/* black */
+	EXPAND_COLOR(255, 255, 255),	/* white */
+};
+
+static const struct drm_color_lut pentile_color_lut[] = {
+	/* PenTile RG-GB */
+	EXPAND_COLOR(  0,   0,   0),	/* black */
+	EXPAND_COLOR(255,   0,   0),	/* red */
+	EXPAND_COLOR(  0, 207,   0),	/* green */
+	EXPAND_COLOR(  0,   0, 255),	/* blue */
+};
+
+static const struct drm_color_lut smpte_color_lut[] = {
+	[SMPTE_COLOR_GREY] =        EXPAND_COLOR(192, 192, 192),
+	[SMPTE_COLOR_YELLOW] =      EXPAND_COLOR(192, 192,   0),
+	[SMPTE_COLOR_CYAN] =        EXPAND_COLOR(  0, 192, 192),
+	[SMPTE_COLOR_GREEN] =       EXPAND_COLOR(  0, 192,   0),
+	[SMPTE_COLOR_MAGENTA] =     EXPAND_COLOR(192,   0, 192),
+	[SMPTE_COLOR_RED] =         EXPAND_COLOR(192,   0,   0),
+	[SMPTE_COLOR_BLUE] =        EXPAND_COLOR(  0,   0, 192),
+	[SMPTE_COLOR_BLACK] =       EXPAND_COLOR( 19,  19,  19),
+	[SMPTE_COLOR_IN_PHASE] =    EXPAND_COLOR(  0,  33,  76),
+	[SMPTE_COLOR_SUPER_WHITE] = EXPAND_COLOR(255, 255, 255),
+	[SMPTE_COLOR_QUADRATURE] =  EXPAND_COLOR( 50,   0, 106),
+	[SMPTE_COLOR_3PC5] =        EXPAND_COLOR(  9,   9,   9),
+	[SMPTE_COLOR_11PC5] =       EXPAND_COLOR( 29,  29,  29),
+};
+
+#undef EXPAND_COLOR
+
+/*
+ * Floyd-Steinberg dithering
+ */
+
+struct fsd {
+	unsigned int width;
+	unsigned int x;
+	unsigned int i;
+	int red;
+	int green;
+	int blue;
+	int error[];
+};
+
+static struct fsd *fsd_alloc(unsigned int width)
+{
+	unsigned int n = 3 * (width + 1);
+	struct fsd *fsd = malloc(sizeof(*fsd) + n * sizeof(fsd->error[0]));
+
+	fsd->width = width;
+	fsd->x = 0;
+	fsd->i = 0;
+	memset(fsd->error, 0, n * sizeof(fsd->error[0]));
+
+	return fsd;
+}
+
+static inline int clamp(int val, int min, int max)
+{
+	if (val < min)
+		return min;
+	if (val > max)
+		return max;
+	return val;
+}
+
+static void fsd_dither(struct fsd *fsd, struct drm_color_lut *color)
+{
+	unsigned int i = fsd->i;
+
+	fsd->red = (int)color->red + (fsd->error[3 * i] + 8) / 16;
+	fsd->green = (int)color->green + (fsd->error[3 * i + 1] + 8) / 16;
+	fsd->blue = (int)color->blue + (fsd->error[3 * i + 2] + 8) / 16;
+
+	color->red = clamp(fsd->red, 0, 65535);
+	color->green = clamp(fsd->green, 0, 65535);
+	color->blue = clamp(fsd->blue, 0, 65535);
+}
+
+static void fsd_update(struct fsd *fsd, const struct drm_color_lut *actual)
+{
+	int error_red = fsd->red - (int)actual->red;
+	int error_green = fsd->green - (int)actual->green;
+	int error_blue = fsd->blue - (int)actual->blue;
+	unsigned int width = fsd->width;
+	unsigned int i = fsd->i, j;
+	unsigned int n = width + 1;
+
+	/* Distribute errors over neighboring pixels */
+	if (fsd->x == width - 1) {
+		/* Last pixel on this scanline */
+		/* South East: initialize to zero */
+		fsd->error[3 * i] = 0;
+		fsd->error[3 * i + 1] = 0;
+		fsd->error[3 * i + 2] = 0;
+	} else {
+		/* East: accumulate error */
+		j = (i + 1) % n;
+		fsd->error[3 * j] += 7 * error_red;
+		fsd->error[3 * j + 1] += 7 * error_green;
+		fsd->error[3 * j + 2] += 7 * error_blue;
+
+		/* South East: initial error */
+		fsd->error[3 * i] = error_red;
+		fsd->error[3 * i + 1] = error_green;
+		fsd->error[3 * i + 2] = error_blue;
+	}
+	/* South West: accumulate error */
+	j = (i + width - 1) % n;
+	fsd->error[3 * j] += 3 * error_red;
+	fsd->error[3 * j + 1] += 3 * error_green;
+	fsd->error[3 * j + 2] += 3 * error_blue;
+
+	/* South: accumulate error */
+	j = (i + width) % n;
+	fsd->error[3 * j] += 5 * error_red;
+	fsd->error[3 * j + 1] += 5 * error_green;
+	fsd->error[3 * j + 2] += 5 * error_blue;
+
+	fsd->x = (fsd->x + 1) % width;
+	fsd->i = (fsd->i + 1) % n;
+}
+
+static void write_pixel_1(uint8_t *mem, unsigned int x, unsigned int pixel)
+{
+	unsigned int shift = 7 - (x & 7);
+	unsigned int mask = 1U << shift;
+
+	mem[x / 8] = (mem[x / 8] & ~mask) | ((pixel << shift) & mask);
+}
+
+static void write_color_1(struct fsd *fsd, uint8_t *mem, unsigned int x,
+			  unsigned int index)
+{
+	struct drm_color_lut color = smpte_color_lut[index];
+	unsigned int pixel;
+
+	fsd_dither(fsd, &color);
+
+	/* ITU BT.601: Y = 0.299 R + 0.587 G + 0.114 B */
+	if (3 * color.red + 6 * color.green + color.blue >= 10 * 32768) {
+		pixel = 1;
+		color.red = color.green = color.blue = 65535;
+	} else {
+		pixel = 0;
+		color.red = color.green = color.blue = 0;
+	}
+
+	fsd_update(fsd, &color);
+
+	write_pixel_1(mem, x, pixel);
+}
+
+static void fill_smpte_c1(void *mem, unsigned int width, unsigned int height,
+			  unsigned int stride)
+{
+	struct fsd *fsd = fsd_alloc(width);
+	unsigned int x;
+	unsigned int y;
+
+	for (y = 0; y < height * 6 / 9; ++y) {
+		for (x = 0; x < width; ++x)
+			write_color_1(fsd, mem, x, smpte_top[x * 7 / width]);
+		mem += stride;
+	}
+
+	for (; y < height * 7 / 9; ++y) {
+		for (x = 0; x < width; ++x)
+			write_color_1(fsd, mem, x, smpte_middle[x * 7 / width]);
+		mem += stride;
+	}
+
+	for (; y < height; ++y) {
+		for (x = 0; x < width * 5 / 7; ++x)
+			write_color_1(fsd, mem, x,
+				      smpte_bottom[x * 4 / (width * 5 / 7)]);
+		for (; x < width * 6 / 7; ++x)
+			write_color_1(fsd, mem, x,
+				      smpte_bottom[(x - width * 5 / 7) * 3 /
+						   (width / 7) + 4]);
+		for (; x < width; ++x)
+			write_color_1(fsd, mem, x, smpte_bottom[7]);
+		mem += stride;
+	}
+
+	free(fsd);
+}
+
+static void write_pixel_2(uint8_t *mem, unsigned int x, unsigned int pixel)
+{
+	unsigned int shift = 6 - 2 * (x & 3);
+	unsigned int mask = 3U << shift;
+
+	mem[x / 4] = (mem[x / 4] & ~mask) | ((pixel << shift) & mask);
+}
+
+static void write_color_2(struct fsd *fsd, uint8_t *mem, unsigned int stride,
+			  unsigned int x, unsigned int index)
+{
+	struct drm_color_lut color = smpte_color_lut[index];
+	unsigned int r, g, b;
+
+	fsd_dither(fsd, &color);
+
+	if (color.red >= 32768) {
+		r = 1;
+		color.red = 65535;
+	} else {
+		r = 0;
+		color.red = 0;
+	}
+	if (color.green >= 32768) {
+		g = 2;
+		color.green = 65535;
+	} else {
+		g = 0;
+		color.green = 0;
+	}
+	if (color.blue >= 32768) {
+		b = 3;
+		color.blue = 65535;
+	} else {
+		b = 0;
+		color.blue = 0;
+	}
+
+	fsd_update(fsd, &color);
+
+	/* Use PenTile RG-GB */
+	write_pixel_2(mem, 2 * x, r);
+	write_pixel_2(mem, 2 * x + 1, g);
+	write_pixel_2(mem + stride, 2 * x, g);
+	write_pixel_2(mem + stride, 2 * x + 1, b);
+}
+
+static void fill_smpte_c2(void *mem, unsigned int width, unsigned int height,
+			  unsigned int stride)
+{
+	struct fsd *fsd = fsd_alloc(width);
+	unsigned int x;
+	unsigned int y;
+
+	/* Half resolution for PenTile RG-GB */
+	width /= 2;
+	height /= 2;
+
+	for (y = 0; y < height * 6 / 9; ++y) {
+		for (x = 0; x < width; ++x)
+			write_color_2(fsd, mem, stride, x, smpte_top[x * 7 / width]);
+		mem += 2 * stride;
+	}
+
+	for (; y < height * 7 / 9; ++y) {
+		for (x = 0; x < width; ++x)
+			write_color_2(fsd, mem, stride, x, smpte_middle[x * 7 / width]);
+		mem += 2 * stride;
+	}
+
+	for (; y < height; ++y) {
+		for (x = 0; x < width * 5 / 7; ++x)
+			write_color_2(fsd, mem, stride, x,
+				      smpte_bottom[x * 4 / (width * 5 / 7)]);
+		for (; x < width * 6 / 7; ++x)
+			write_color_2(fsd, mem, stride, x,
+				      smpte_bottom[(x - width * 5 / 7) * 3 /
+						   (width / 7) + 4]);
+		for (; x < width; ++x)
+			write_color_2(fsd, mem, stride, x, smpte_bottom[7]);
+		mem += 2 * stride;
+	}
+
+	free(fsd);
+}
+
+static void write_pixel_4(uint8_t *mem, unsigned int x, unsigned int pixel)
+{
+	if (x & 1)
+		mem[x / 2] = (mem[x / 2] & 0xf0) | (pixel & 0x0f);
+	else
+		mem[x / 2] = (mem[x / 2] & 0x0f) | (pixel << 4);
+}
+
+static void fill_smpte_c4(void *mem, unsigned int width, unsigned int height,
+			  unsigned int stride)
+{
+	unsigned int x;
+	unsigned int y;
+
+	for (y = 0; y < height * 6 / 9; ++y) {
+		for (x = 0; x < width; ++x)
+			write_pixel_4(mem, x, smpte_top[x * 7 / width]);
+		mem += stride;
+	}
+
+	for (; y < height * 7 / 9; ++y) {
+		for (x = 0; x < width; ++x)
+			write_pixel_4(mem, x, smpte_middle[x * 7 / width]);
+		mem += stride;
+	}
+
+	for (; y < height; ++y) {
+		for (x = 0; x < width * 5 / 7; ++x)
+			write_pixel_4(mem, x,
+				      smpte_bottom[x * 4 / (width * 5 / 7)]);
+		for (; x < width * 6 / 7; ++x)
+			write_pixel_4(mem, x,
+				      smpte_bottom[(x - width * 5 / 7) * 3 /
+						   (width / 7) + 4]);
+		for (; x < width; ++x)
+			write_pixel_4(mem, x, smpte_bottom[7]);
+		mem += stride;
+	}
+}
+
+static void fill_smpte_c8(void *mem, unsigned int width, unsigned int height,
+			  unsigned int stride)
+{
+	unsigned int x;
+	unsigned int y;
+
+	for (y = 0; y < height * 6 / 9; ++y) {
+		for (x = 0; x < width; ++x)
+			((uint8_t *)mem)[x] = smpte_top[x * 7 / width];
+		mem += stride;
+	}
+
+	for (; y < height * 7 / 9; ++y) {
+		for (x = 0; x < width; ++x)
+			((uint8_t *)mem)[x] = smpte_middle[x * 7 / width];
+		mem += stride;
+	}
+
+	for (; y < height; ++y) {
+		for (x = 0; x < width * 5 / 7; ++x)
+			((uint8_t *)mem)[x] =
+				smpte_bottom[x * 4 / (width * 5 / 7)];
+		for (; x < width * 6 / 7; ++x)
+			((uint8_t *)mem)[x] =
+				smpte_bottom[(x - width * 5 / 7) * 3
+					     / (width / 7) + 4];
+		for (; x < width; ++x)
+			((uint8_t *)mem)[x] = smpte_bottom[7];
+		mem += stride;
+	}
+}
+
+void util_smpte_fill_lut(unsigned int ncolors, struct drm_color_lut *lut)
+{
+	if (ncolors < ARRAY_SIZE(bw_color_lut)) {
+		printf("Error: lut too small: %u < %zu\n", ncolors,
+		       ARRAY_SIZE(bw_color_lut));
+		return;
+	}
+	memset(lut, 0, ncolors * sizeof(struct drm_color_lut));
+
+	if (ncolors < ARRAY_SIZE(pentile_color_lut))
+		memcpy(lut, bw_color_lut, sizeof(bw_color_lut));
+	else if (ncolors < ARRAY_SIZE(smpte_color_lut))
+		memcpy(lut, pentile_color_lut, sizeof(pentile_color_lut));
+	else
+		memcpy(lut, smpte_color_lut, sizeof(smpte_color_lut));
+}
+
+static void fill_smpte(const struct util_format_info *info, void *planes[3],
+		       unsigned int width, unsigned int height,
+		       unsigned int stride)
+{
+	unsigned char *u, *v;
+
+	switch (info->format) {
+	case DRM_FORMAT_C1:
+		return fill_smpte_c1(planes[0], width, height, stride);
+	case DRM_FORMAT_C2:
+		return fill_smpte_c2(planes[0], width, height, stride);
+	case DRM_FORMAT_C4:
+		return fill_smpte_c4(planes[0], width, height, stride);
+	case DRM_FORMAT_C8:
+		return fill_smpte_c8(planes[0], width, height, stride);
+	case DRM_FORMAT_UYVY:
+	case DRM_FORMAT_VYUY:
+	case DRM_FORMAT_YUYV:
+	case DRM_FORMAT_YVYU:
+		return fill_smpte_yuv_packed(&info->yuv, planes[0], width,
+					     height, stride);
+
+	case DRM_FORMAT_NV12:
+	case DRM_FORMAT_NV21:
+	case DRM_FORMAT_NV16:
+	case DRM_FORMAT_NV61:
+	case DRM_FORMAT_NV24:
+	case DRM_FORMAT_NV42:
+		u = info->yuv.order & YUV_YCbCr ? planes[1] : planes[1] + 1;
+		v = info->yuv.order & YUV_YCrCb ? planes[1] : planes[1] + 1;
+		return fill_smpte_yuv_planar(&info->yuv, planes[0], u, v,
+					     width, height, stride);
+
+	case DRM_FORMAT_NV15:
+	case DRM_FORMAT_NV20:
+	case DRM_FORMAT_NV30:
+		return fill_smpte_yuv_planar_10bpp(&info->yuv, planes[0],
+						   planes[1], width, height,
+						   stride);
+
+	case DRM_FORMAT_YUV420:
+		return fill_smpte_yuv_planar(&info->yuv, planes[0], planes[1],
+					     planes[2], width, height, stride);
+
+	case DRM_FORMAT_YVU420:
+		return fill_smpte_yuv_planar(&info->yuv, planes[0], planes[2],
+					     planes[1], width, height, stride);
+
+	case DRM_FORMAT_ARGB4444:
+	case DRM_FORMAT_XRGB4444:
+	case DRM_FORMAT_ABGR4444:
+	case DRM_FORMAT_XBGR4444:
+	case DRM_FORMAT_RGBA4444:
+	case DRM_FORMAT_RGBX4444:
+	case DRM_FORMAT_BGRA4444:
+	case DRM_FORMAT_BGRX4444:
+	case DRM_FORMAT_RGB565:
+	case DRM_FORMAT_RGB565 | DRM_FORMAT_BIG_ENDIAN:
+	case DRM_FORMAT_BGR565:
+	case DRM_FORMAT_ARGB1555:
+	case DRM_FORMAT_XRGB1555:
+	case DRM_FORMAT_XRGB1555 | DRM_FORMAT_BIG_ENDIAN:
+	case DRM_FORMAT_ABGR1555:
+	case DRM_FORMAT_XBGR1555:
+	case DRM_FORMAT_RGBA5551:
+	case DRM_FORMAT_RGBX5551:
+	case DRM_FORMAT_BGRA5551:
+	case DRM_FORMAT_BGRX5551:
+		return fill_smpte_rgb16(&info->rgb, planes[0],
+					width, height, stride,
+					info->format & DRM_FORMAT_BIG_ENDIAN);
+
+	case DRM_FORMAT_BGR888:
+	case DRM_FORMAT_RGB888:
+		return fill_smpte_rgb24(&info->rgb, planes[0],
+					width, height, stride);
+	case DRM_FORMAT_ARGB8888:
+	case DRM_FORMAT_XRGB8888:
+	case DRM_FORMAT_ABGR8888:
+	case DRM_FORMAT_XBGR8888:
+	case DRM_FORMAT_RGBA8888:
+	case DRM_FORMAT_RGBX8888:
+	case DRM_FORMAT_BGRA8888:
+	case DRM_FORMAT_BGRX8888:
+	case DRM_FORMAT_ARGB2101010:
+	case DRM_FORMAT_XRGB2101010:
+	case DRM_FORMAT_ABGR2101010:
+	case DRM_FORMAT_XBGR2101010:
+	case DRM_FORMAT_RGBA1010102:
+	case DRM_FORMAT_RGBX1010102:
+	case DRM_FORMAT_BGRA1010102:
+	case DRM_FORMAT_BGRX1010102:
+		return fill_smpte_rgb32(&info->rgb, planes[0],
+					width, height, stride);
+
+	case DRM_FORMAT_XRGB16161616F:
+	case DRM_FORMAT_XBGR16161616F:
+	case DRM_FORMAT_ARGB16161616F:
+	case DRM_FORMAT_ABGR16161616F:
+		return fill_smpte_rgb16fp(&info->rgb, planes[0],
+					  width, height, stride);
+	}
+}
+
+#if HAVE_CAIRO
+static void byteswap_buffer16(void *mem, unsigned int width, unsigned int height,
+			      unsigned int stride)
+{
+	unsigned int x, y;
+
+	for (y = 0; y < height; ++y) {
+		for (x = 0; x < width; ++x)
+			((uint16_t *)mem)[x] = swap16(((uint16_t *)mem)[x]);
+		mem += stride;
+	}
+}
+
+static void byteswap_buffer32(void *mem, unsigned int width, unsigned int height,
+			      unsigned int stride)
+{
+	unsigned int x, y;
+
+	for (y = 0; y < height; ++y) {
+		for (x = 0; x < width; ++x)
+			((uint32_t *)mem)[x] = swap32(((uint32_t *)mem)[x]);
+		mem += stride;
+	}
+}
+#endif
+
+static void make_pwetty(void *data, unsigned int width, unsigned int height,
+			unsigned int stride, uint32_t format)
+{
+#if HAVE_CAIRO
+	cairo_surface_t *surface;
+	cairo_t *cr;
+	cairo_format_t cairo_format;
+	bool swap16 = false;
+	bool swap32 = false;
+
+	/* we can ignore the order of R,G,B channels */
+	switch (format) {
+	case DRM_FORMAT_XRGB8888:
+	case DRM_FORMAT_ARGB8888:
+	case DRM_FORMAT_XBGR8888:
+	case DRM_FORMAT_ABGR8888:
+		cairo_format = CAIRO_FORMAT_ARGB32;
+		break;
+	case DRM_FORMAT_RGB565:
+	case DRM_FORMAT_RGB565 | DRM_FORMAT_BIG_ENDIAN:
+	case DRM_FORMAT_BGR565:
+		cairo_format = CAIRO_FORMAT_RGB16_565;
+		swap16 = fb_foreign_endian(format);
+		break;
+#if CAIRO_VERSION_MAJOR > 1 || (CAIRO_VERSION_MAJOR == 1 && CAIRO_VERSION_MINOR >= 12)
+	case DRM_FORMAT_ARGB2101010:
+	case DRM_FORMAT_XRGB2101010:
+	case DRM_FORMAT_ABGR2101010:
+	case DRM_FORMAT_XBGR2101010:
+		cairo_format = CAIRO_FORMAT_RGB30;
+		swap32 = fb_foreign_endian(format);
+		break;
+#endif
+	default:
+		return;
+	}
+
+	/* Cairo uses native byte order, so we may have to byteswap before... */
+	if (swap16)
+		byteswap_buffer16(data, width, height, stride);
+	if (swap32)
+		byteswap_buffer32(data, width, height, stride);
+
+	surface = cairo_image_surface_create_for_data(data,
+						      cairo_format,
+						      width, height,
+						      stride);
+	cr = cairo_create(surface);
+	cairo_surface_destroy(surface);
+
+	cairo_set_line_cap(cr, CAIRO_LINE_CAP_SQUARE);
+	for (unsigned x = 0; x < width; x += 250)
+		for (unsigned y = 0; y < height; y += 250) {
+			char buf[64];
+
+			cairo_move_to(cr, x, y - 20);
+			cairo_line_to(cr, x, y + 20);
+			cairo_move_to(cr, x - 20, y);
+			cairo_line_to(cr, x + 20, y);
+			cairo_new_sub_path(cr);
+			cairo_arc(cr, x, y, 10, 0, M_PI * 2);
+			cairo_set_line_width(cr, 4);
+			cairo_set_source_rgb(cr, 0, 0, 0);
+			cairo_stroke_preserve(cr);
+			cairo_set_source_rgb(cr, 1, 1, 1);
+			cairo_set_line_width(cr, 2);
+			cairo_stroke(cr);
+
+			snprintf(buf, sizeof buf, "%d, %d", x, y);
+			cairo_move_to(cr, x + 20, y + 20);
+			cairo_text_path(cr, buf);
+			cairo_set_source_rgb(cr, 0, 0, 0);
+			cairo_stroke_preserve(cr);
+			cairo_set_source_rgb(cr, 1, 1, 1);
+			cairo_fill(cr);
+		}
+
+	cairo_destroy(cr);
+
+	/* ... and after */
+	if (swap16)
+		byteswap_buffer16(data, width, height, stride);
+	if (swap32)
+		byteswap_buffer32(data, width, height, stride);
+#endif
+}
+
+static struct color_yuv make_tiles_yuv_color(unsigned int x, unsigned int y,
+					     unsigned int width)
+{
+	div_t d = div(x+y, width);
+	uint32_t rgb32 = 0x00130502 * (d.quot >> 6)
+		       + 0x000a1120 * (d.rem >> 6);
+	struct color_yuv color =
+		MAKE_YUV_601((rgb32 >> 16) & 0xff, (rgb32 >> 8) & 0xff,
+			     rgb32 & 0xff);
+	return color;
+}
+
+static void fill_tiles_yuv_planar(const struct util_format_info *info,
+				  unsigned char *y_mem, unsigned char *u_mem,
+				  unsigned char *v_mem, unsigned int width,
+				  unsigned int height, unsigned int stride)
+{
+	const struct util_yuv_info *yuv = &info->yuv;
+	unsigned int cs = yuv->chroma_stride;
+	unsigned int xsub = yuv->xsub;
+	unsigned int ysub = yuv->ysub;
+	unsigned int x;
+	unsigned int y;
+
+	for (y = 0; y < height; ++y) {
+		for (x = 0; x < width; ++x) {
+			struct color_yuv color =
+				make_tiles_yuv_color(x, y, width);
+
+			y_mem[x] = color.y;
+			u_mem[x/xsub*cs] = color.u;
+			v_mem[x/xsub*cs] = color.v;
+		}
+
+		y_mem += stride;
+		if ((y + 1) % ysub == 0) {
+			u_mem += stride * cs / xsub;
+			v_mem += stride * cs / xsub;
+		}
+	}
+}
+
+static void fill_tiles_yuv_planar_10bpp(const struct util_format_info *info,
+					unsigned char *y_mem,
+					unsigned char *uv_mem,
+					unsigned int width,
+					unsigned int height,
+					unsigned int stride)
+{
+	const struct util_yuv_info *yuv = &info->yuv;
+	unsigned int cs = yuv->chroma_stride;
+	unsigned int xsub = yuv->xsub;
+	unsigned int ysub = yuv->ysub;
+	unsigned int xstep = cs * xsub;
+	unsigned int x;
+	unsigned int y;
+
+	for (y = 0; y < height; ++y) {
+		for (x = 0; x < width; x += 4) {
+			struct color_yuv a = make_tiles_yuv_color(x+0, y, width);
+			struct color_yuv b = make_tiles_yuv_color(x+1, y, width);
+			struct color_yuv c = make_tiles_yuv_color(x+2, y, width);
+			struct color_yuv d = make_tiles_yuv_color(x+3, y, width);
+
+			write_pixels_10bpp(&y_mem[(x * 5) / 4],
+				a.y << 2, b.y << 2, c.y << 2, d.y << 2);
+		}
+		y_mem += stride;
+	}
+	for (y = 0; y < height; y += ysub) {
+		for (x = 0; x < width; x += xstep) {
+			struct color_yuv a = make_tiles_yuv_color(x+0, y, width);
+			struct color_yuv b = make_tiles_yuv_color(x+xsub, y, width);
+
+			write_pixels_10bpp(&uv_mem[(x * 5) / xstep],
+				a.u << 2, a.v << 2, b.u << 2, b.v << 2);
+		}
+		uv_mem += stride * cs / xsub;
+	}
+}
+
+static void fill_tiles_yuv_packed(const struct util_format_info *info,
+				  void *mem, unsigned int width,
+				  unsigned int height, unsigned int stride)
+{
+	const struct util_yuv_info *yuv = &info->yuv;
+	unsigned char *y_mem = (yuv->order & YUV_YC) ? mem : mem + 1;
+	unsigned char *c_mem = (yuv->order & YUV_CY) ? mem : mem + 1;
+	unsigned int u = (yuv->order & YUV_YCrCb) ? 2 : 0;
+	unsigned int v = (yuv->order & YUV_YCbCr) ? 2 : 0;
+	unsigned int x;
+	unsigned int y;
+
+	for (y = 0; y < height; ++y) {
+		for (x = 0; x < width; x += 2) {
+			struct color_yuv color =
+				make_tiles_yuv_color(x, y, width);
+
+			y_mem[2*x] = color.y;
+			c_mem[2*x+u] = color.u;
+			y_mem[2*x+2] = color.y;
+			c_mem[2*x+v] = color.v;
+		}
+
+		y_mem += stride;
+		c_mem += stride;
+	}
+}
+
+static void fill_tiles_rgb16(const struct util_format_info *info, void *mem,
+			     unsigned int width, unsigned int height,
+			     unsigned int stride, bool fb_be)
+{
+	const struct util_rgb_info *rgb = &info->rgb;
+	void *mem_base = mem;
+	unsigned int x, y;
+
+	for (y = 0; y < height; ++y) {
+		for (x = 0; x < width; ++x) {
+			div_t d = div(x+y, width);
+			uint32_t rgb32 = 0x00130502 * (d.quot >> 6)
+				       + 0x000a1120 * (d.rem >> 6);
+			uint16_t color =
+				MAKE_RGBA(rgb, (rgb32 >> 16) & 0xff,
+					  (rgb32 >> 8) & 0xff, rgb32 & 0xff,
+					  255);
+
+			((uint16_t *)mem)[x] = cpu_to_fb16(color);
+		}
+		mem += stride;
+	}
+
+	make_pwetty(mem_base, width, height, stride, info->format);
+}
+
+static void fill_tiles_rgb24(const struct util_format_info *info, void *mem,
+			     unsigned int width, unsigned int height,
+			     unsigned int stride)
+{
+	const struct util_rgb_info *rgb = &info->rgb;
+	unsigned int x, y;
+
+	for (y = 0; y < height; ++y) {
+		for (x = 0; x < width; ++x) {
+			div_t d = div(x+y, width);
+			uint32_t rgb32 = 0x00130502 * (d.quot >> 6)
+				       + 0x000a1120 * (d.rem >> 6);
+			struct color_rgb24 color =
+				MAKE_RGB24(rgb, (rgb32 >> 16) & 0xff,
+					   (rgb32 >> 8) & 0xff, rgb32 & 0xff);
+
+			((struct color_rgb24 *)mem)[x] = color;
+		}
+		mem += stride;
+	}
+}
+
+static void fill_tiles_rgb32(const struct util_format_info *info, void *mem,
+			     unsigned int width, unsigned int height,
+			     unsigned int stride)
+{
+	const struct util_rgb_info *rgb = &info->rgb;
+	void *mem_base = mem;
+	unsigned int x, y;
+
+	for (y = 0; y < height; ++y) {
+		for (x = 0; x < width; ++x) {
+			div_t d = div(x+y, width);
+			uint32_t rgb32 = 0x00130502 * (d.quot >> 6)
+				       + 0x000a1120 * (d.rem >> 6);
+			uint32_t alpha = ((y < height/2) && (x < width/2)) ? 127 : 255;
+			uint32_t color =
+				MAKE_RGBA(rgb, (rgb32 >> 16) & 0xff,
+					  (rgb32 >> 8) & 0xff, rgb32 & 0xff,
+					  alpha);
+
+			((uint32_t *)mem)[x] = cpu_to_le32(color);
+		}
+		mem += stride;
+	}
+
+	make_pwetty(mem_base, width, height, stride, info->format);
+}
+
+static void fill_tiles_rgb16fp(const struct util_format_info *info, void *mem,
+			       unsigned int width, unsigned int height,
+			       unsigned int stride)
+{
+	const struct util_rgb_info *rgb = &info->rgb;
+	unsigned int x, y;
+
+	/* TODO: Give this actual fp16 precision */
+	for (y = 0; y < height; ++y) {
+		for (x = 0; x < width; ++x) {
+			div_t d = div(x+y, width);
+			uint32_t rgb32 = 0x00130502 * (d.quot >> 6)
+				       + 0x000a1120 * (d.rem >> 6);
+			uint32_t alpha = ((y < height/2) && (x < width/2)) ? 127 : 255;
+			uint64_t color =
+				MAKE_RGBA8FP16(rgb, (rgb32 >> 16) & 0xff,
+					       (rgb32 >> 8) & 0xff, rgb32 & 0xff,
+					       alpha);
+
+			((uint64_t *)mem)[x] = color;
+		}
+		mem += stride;
+	}
+}
+
+static void fill_tiles(const struct util_format_info *info, void *planes[3],
+		       unsigned int width, unsigned int height,
+		       unsigned int stride)
+{
+	unsigned char *u, *v;
+
+	switch (info->format) {
+	case DRM_FORMAT_UYVY:
+	case DRM_FORMAT_VYUY:
+	case DRM_FORMAT_YUYV:
+	case DRM_FORMAT_YVYU:
+		return fill_tiles_yuv_packed(info, planes[0],
+					     width, height, stride);
+
+	case DRM_FORMAT_NV12:
+	case DRM_FORMAT_NV21:
+	case DRM_FORMAT_NV16:
+	case DRM_FORMAT_NV61:
+	case DRM_FORMAT_NV24:
+	case DRM_FORMAT_NV42:
+		u = info->yuv.order & YUV_YCbCr ? planes[1] : planes[1] + 1;
+		v = info->yuv.order & YUV_YCrCb ? planes[1] : planes[1] + 1;
+		return fill_tiles_yuv_planar(info, planes[0], u, v,
+					     width, height, stride);
+
+	case DRM_FORMAT_NV15:
+	case DRM_FORMAT_NV20:
+	case DRM_FORMAT_NV30:
+		return fill_tiles_yuv_planar_10bpp(info, planes[0], planes[1],
+						   width, height, stride);
+
+	case DRM_FORMAT_YUV420:
+		return fill_tiles_yuv_planar(info, planes[0], planes[1],
+					     planes[2], width, height, stride);
+
+	case DRM_FORMAT_YVU420:
+		return fill_tiles_yuv_planar(info, planes[0], planes[2],
+					     planes[1], width, height, stride);
+
+	case DRM_FORMAT_ARGB4444:
+	case DRM_FORMAT_XRGB4444:
+	case DRM_FORMAT_ABGR4444:
+	case DRM_FORMAT_XBGR4444:
+	case DRM_FORMAT_RGBA4444:
+	case DRM_FORMAT_RGBX4444:
+	case DRM_FORMAT_BGRA4444:
+	case DRM_FORMAT_BGRX4444:
+	case DRM_FORMAT_RGB565:
+	case DRM_FORMAT_RGB565 | DRM_FORMAT_BIG_ENDIAN:
+	case DRM_FORMAT_BGR565:
+	case DRM_FORMAT_ARGB1555:
+	case DRM_FORMAT_XRGB1555:
+	case DRM_FORMAT_XRGB1555 | DRM_FORMAT_BIG_ENDIAN:
+	case DRM_FORMAT_ABGR1555:
+	case DRM_FORMAT_XBGR1555:
+	case DRM_FORMAT_RGBA5551:
+	case DRM_FORMAT_RGBX5551:
+	case DRM_FORMAT_BGRA5551:
+	case DRM_FORMAT_BGRX5551:
+		return fill_tiles_rgb16(info, planes[0],
+					width, height, stride,
+					info->format & DRM_FORMAT_BIG_ENDIAN);
+
+	case DRM_FORMAT_BGR888:
+	case DRM_FORMAT_RGB888:
+		return fill_tiles_rgb24(info, planes[0],
+					width, height, stride);
+	case DRM_FORMAT_ARGB8888:
+	case DRM_FORMAT_XRGB8888:
+	case DRM_FORMAT_ABGR8888:
+	case DRM_FORMAT_XBGR8888:
+	case DRM_FORMAT_RGBA8888:
+	case DRM_FORMAT_RGBX8888:
+	case DRM_FORMAT_BGRA8888:
+	case DRM_FORMAT_BGRX8888:
+	case DRM_FORMAT_ARGB2101010:
+	case DRM_FORMAT_XRGB2101010:
+	case DRM_FORMAT_ABGR2101010:
+	case DRM_FORMAT_XBGR2101010:
+	case DRM_FORMAT_RGBA1010102:
+	case DRM_FORMAT_RGBX1010102:
+	case DRM_FORMAT_BGRA1010102:
+	case DRM_FORMAT_BGRX1010102:
+		return fill_tiles_rgb32(info, planes[0],
+					width, height, stride);
+
+	case DRM_FORMAT_XRGB16161616F:
+	case DRM_FORMAT_XBGR16161616F:
+	case DRM_FORMAT_ARGB16161616F:
+	case DRM_FORMAT_ABGR16161616F:
+		return fill_tiles_rgb16fp(info, planes[0],
+					  width, height, stride);
+	}
+}
+
+static void fill_plain(const struct util_format_info *info, void *planes[3],
+		       unsigned int height,
+		       unsigned int stride)
+{
+	switch (info->format) {
+	case DRM_FORMAT_XRGB16161616F:
+	case DRM_FORMAT_XBGR16161616F:
+	case DRM_FORMAT_ARGB16161616F:
+	case DRM_FORMAT_ABGR16161616F:
+		/* 0x3838 = 0.5273 */
+		memset(planes[0], 0x38, stride * height);
+		break;
+	default:
+		memset(planes[0], 0x77, stride * height);
+		break;
+	}
+}
+
+static void fill_gradient_rgb32(const struct util_rgb_info *rgb,
+				void *mem,
+				unsigned int width, unsigned int height,
+				unsigned int stride)
+{
+	unsigned int i, j;
+
+	for (i = 0; i < height / 2; i++) {
+		uint32_t *row = mem;
+
+		for (j = 0; j < width / 2; j++) {
+			uint32_t value = MAKE_RGBA10(rgb, j & 0x3ff, j & 0x3ff, j & 0x3ff, 0);
+			row[2*j] = row[2*j+1] = cpu_to_le32(value);
+		}
+		mem += stride;
+	}
+
+	for (; i < height; i++) {
+		uint32_t *row = mem;
+
+		for (j = 0; j < width / 2; j++) {
+			uint32_t value = MAKE_RGBA10(rgb, j & 0x3fc, j & 0x3fc, j & 0x3fc, 0);
+			row[2*j] = row[2*j+1] = cpu_to_le32(value);
+		}
+		mem += stride;
+	}
+}
+
+static void fill_gradient_rgb16fp(const struct util_rgb_info *rgb,
+				  void *mem,
+				  unsigned int width, unsigned int height,
+				  unsigned int stride)
+{
+	unsigned int i, j;
+
+	for (i = 0; i < height / 2; i++) {
+		uint64_t *row = mem;
+
+		for (j = 0; j < width / 2; j++) {
+			uint64_t value = MAKE_RGBA10FP16(rgb, j & 0x3ff, j & 0x3ff, j & 0x3ff, 0);
+			row[2*j] = row[2*j+1] = value;
+		}
+		mem += stride;
+	}
+
+	for (; i < height; i++) {
+		uint64_t *row = mem;
+
+		for (j = 0; j < width / 2; j++) {
+			uint64_t value = MAKE_RGBA10FP16(rgb, j & 0x3fc, j & 0x3fc, j & 0x3fc, 0);
+			row[2*j] = row[2*j+1] = value;
+		}
+		mem += stride;
+	}
+}
+
+/* The gradient pattern creates two horizontal gray gradients, split
+ * into two halves. The top half has 10bpc precision, the bottom half
+ * has 8bpc precision. When using with a 10bpc fb format, there are 3
+ * possible outcomes:
+ *
+ *  - Pixel data is encoded as 8bpc to the display, no dithering. This
+ *    would lead to the top and bottom halves looking identical.
+ *
+ *  - Pixel data is encoded as 8bpc to the display, with dithering. This
+ *    would lead to there being a visible difference between the two halves,
+ *    but the top half would look a little speck-y due to the dithering.
+ *
+ *  - Pixel data is encoded at 10bpc+ to the display (which implies
+ *    the display is able to show this level of depth). This should
+ *    lead to the top half being a very clean gradient, and visibly different
+ *    from the bottom half.
+ *
+ * Once we support additional fb formats, this approach could be extended
+ * to distinguish even higher bpc precisions.
+ *
+ * Note that due to practical size considerations, for the screens
+ * where this matters, the pattern actually emits stripes 2-pixels
+ * wide for each gradient color. Otherwise the difference may be a bit
+ * hard to notice.
+ */
+static void fill_gradient(const struct util_format_info *info, void *planes[3],
+			  unsigned int width, unsigned int height,
+			  unsigned int stride)
+{
+	switch (info->format) {
+	case DRM_FORMAT_ARGB8888:
+	case DRM_FORMAT_XRGB8888:
+	case DRM_FORMAT_ABGR8888:
+	case DRM_FORMAT_XBGR8888:
+	case DRM_FORMAT_RGBA8888:
+	case DRM_FORMAT_RGBX8888:
+	case DRM_FORMAT_BGRA8888:
+	case DRM_FORMAT_BGRX8888:
+	case DRM_FORMAT_ARGB2101010:
+	case DRM_FORMAT_XRGB2101010:
+	case DRM_FORMAT_ABGR2101010:
+	case DRM_FORMAT_XBGR2101010:
+	case DRM_FORMAT_RGBA1010102:
+	case DRM_FORMAT_RGBX1010102:
+	case DRM_FORMAT_BGRA1010102:
+	case DRM_FORMAT_BGRX1010102:
+		return fill_gradient_rgb32(&info->rgb, planes[0],
+					   width, height, stride);
+
+	case DRM_FORMAT_XRGB16161616F:
+	case DRM_FORMAT_XBGR16161616F:
+	case DRM_FORMAT_ARGB16161616F:
+	case DRM_FORMAT_ABGR16161616F:
+		return fill_gradient_rgb16fp(&info->rgb, planes[0],
+					     width, height, stride);
+	}
+}
+
+/*
+ * util_fill_pattern - Fill a buffer with a test pattern
+ * @format: Pixel format
+ * @pattern: Test pattern
+ * @planes: Array of buffers
+ * @width: Width in pixels
+ * @height: Height in pixels
+ * @stride: Line stride (pitch) in bytes
+ *
+ * Fill the buffers with the test pattern specified by the pattern parameter.
+ * Supported formats vary depending on the selected pattern.
+ */
+void util_fill_pattern(uint32_t format, enum util_fill_pattern pattern,
+		       void *planes[3], unsigned int width,
+		       unsigned int height, unsigned int stride)
+{
+	const struct util_format_info *info;
+
+	info = util_format_info_find(format);
+	if (info == NULL)
+		return;
+
+	switch (pattern) {
+	case UTIL_PATTERN_TILES:
+		return fill_tiles(info, planes, width, height, stride);
+
+	case UTIL_PATTERN_SMPTE:
+		return fill_smpte(info, planes, width, height, stride);
+
+	case UTIL_PATTERN_PLAIN:
+		return fill_plain(info, planes, height, stride);
+
+	case UTIL_PATTERN_GRADIENT:
+		return fill_gradient(info, planes, width, height, stride);
+
+	default:
+		printf("Error: unsupported test pattern %u.\n", pattern);
+		break;
+	}
+}
+
+static const char *pattern_names[] = {
+	[UTIL_PATTERN_TILES] = "tiles",
+	[UTIL_PATTERN_SMPTE] = "smpte",
+	[UTIL_PATTERN_PLAIN] = "plain",
+	[UTIL_PATTERN_GRADIENT] = "gradient",
+};
+
+enum util_fill_pattern util_pattern_enum(const char *name)
+{
+	unsigned int i;
+
+	for (i = 0; i < ARRAY_SIZE(pattern_names); i++)
+		if (!strcmp(pattern_names[i], name))
+			return (enum util_fill_pattern)i;
+
+	printf("Error: unsupported test pattern %s.\n", name);
+	return UTIL_PATTERN_SMPTE;
+}
diff --git a/tests/util/pattern.h b/tests/util/pattern.h
new file mode 100644
index 0000000..e500aba
--- /dev/null
+++ b/tests/util/pattern.h
@@ -0,0 +1,46 @@
+/*
+ * Copyright 2008 Tungsten Graphics
+ *   Jakob Bornecrantz <jakob@tungstengraphics.com>
+ * Copyright 2008 Intel Corporation
+ *   Jesse Barnes <jesse.barnes@intel.com>
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the "Software"),
+ * to deal in the Software without restriction, including without limitation
+ * the rights to use, copy, modify, merge, publish, distribute, sublicense,
+ * and/or sell copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+ * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
+ * IN THE SOFTWARE.
+ */
+
+#ifndef UTIL_PATTERN_H
+#define UTIL_PATTERN_H
+
+#include <drm_mode.h>
+
+enum util_fill_pattern {
+	UTIL_PATTERN_TILES,
+	UTIL_PATTERN_PLAIN,
+	UTIL_PATTERN_SMPTE,
+	UTIL_PATTERN_GRADIENT,
+};
+
+void util_fill_pattern(uint32_t format, enum util_fill_pattern pattern,
+		       void *planes[3], unsigned int width,
+		       unsigned int height, unsigned int stride);
+
+void util_smpte_fill_lut(unsigned int ncolors, struct drm_color_lut *lut);
+
+enum util_fill_pattern util_pattern_enum(const char *name);
+
+#endif /* UTIL_PATTERN_H */