[PATCH i-g-t v5 3/4] tests/kms_color_chamelium: add subtests to validate color

Kunal Joshi kunal1.joshi at intel.com
Thu Jan 23 23:30:39 UTC 2020


To validate color subtests using chamelium, subtests modified
to do frame dump comparison instead of crc comparison.
Tests require chamelium and will validate color features
at pipe level.

(v2)
        Comparing framedump with framebuffer reference instead of
        comparing two framedump.
(v3)
        Moved common functions with kms_color to lib/igt_color
(v4)
        Added changes to skip the tests if there is no connected port with
        chamelium.
        Rearranged position of valid_output.
(v5)
        No change.

Signed-off-by: Kunal Joshi <kunal1.joshi at intel.com>
Signed-off-by: Swati Sharma <swati2.sharma at intel.com>
Suggested-by: Uma Shankar <uma.shankar at intel.com>
---
 tests/kms_color_chamelium.c | 759 ++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 759 insertions(+)
 create mode 100644 tests/kms_color_chamelium.c

diff --git a/tests/kms_color_chamelium.c b/tests/kms_color_chamelium.c
new file mode 100644
index 0000000..b6b6731
--- /dev/null
+++ b/tests/kms_color_chamelium.c
@@ -0,0 +1,759 @@
+/*
+ * Copyright © 2020 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 (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.
+ *
+ */
+
+#include "kms_color.h"
+
+IGT_TEST_DESCRIPTION("Test Color Features at Pipe level");
+
+/*
+ * Draw 3 gradient rectangles in red, green and blue, with a maxed out
+ * degamma LUT and verify we have the same frame dump as drawing solid color
+ * rectangles with linear degamma LUT.
+ */
+static void test_pipe_degamma(data_t *data,
+			      igt_plane_t *primary)
+{
+	igt_output_t *output;
+	gamma_lut_t *degamma_linear, *degamma_full;
+	gamma_lut_t *gamma_linear;
+	color_t red_green_blue[] = {
+		{ 1.0, 0.0, 0.0 },
+		{ 0.0, 1.0, 0.0 },
+		{ 0.0, 0.0, 1.0 }
+	};
+
+	int i;
+	struct chamelium_port *port;
+	char *connected_ports[4];
+
+	for (i = 0; i < data->port_count; i++)
+		connected_ports[i] =
+			(char *) chamelium_port_get_name(data->ports[i]);
+
+	igt_require(igt_pipe_obj_has_prop(primary->pipe, IGT_CRTC_DEGAMMA_LUT));
+	igt_require(igt_pipe_obj_has_prop(primary->pipe, IGT_CRTC_GAMMA_LUT));
+
+	degamma_linear = generate_table(data->degamma_lut_size, 1.0);
+	degamma_full = generate_table_max(data->degamma_lut_size);
+
+	gamma_linear = generate_table(data->gamma_lut_size, 1.0);
+
+	for_each_valid_output_on_pipe(&data->display,
+				      primary->pipe->pipe,
+				      output) {
+		drmModeModeInfo *mode;
+		struct igt_fb fb_modeset, fb, fbref;
+		struct chamelium_frame_dump *frame_fullcolors;
+		int fb_id, fb_modeset_id, fbref_id;
+		bool valid_output = false;
+
+		for (i = 0; i < data->port_count; i++)
+			valid_output |=
+				(strcmp(output->name, connected_ports[i]) == 0);
+		if (!valid_output)
+			continue;
+		else
+			for (i = 0; i < data->port_count; i++)
+				if (strcmp(output->name,
+					   connected_ports[i]) == 0)
+					port = data->ports[i];
+
+		igt_output_set_pipe(output, primary->pipe->pipe);
+		mode = igt_output_get_mode(output);
+
+		/* Create a framebuffer at the size of the output. */
+		fb_id = igt_create_fb(data->drm_fd,
+				      mode->hdisplay,
+				      mode->vdisplay,
+				      DRM_FORMAT_XRGB8888,
+				      LOCAL_DRM_FORMAT_MOD_NONE,
+				      &fb);
+		igt_assert(fb_id);
+
+		fb_modeset_id = igt_create_fb(data->drm_fd,
+					      mode->hdisplay,
+					      mode->vdisplay,
+					      DRM_FORMAT_XRGB8888,
+					      LOCAL_DRM_FORMAT_MOD_NONE,
+					      &fb_modeset);
+		igt_assert(fb_modeset_id);
+
+		fbref_id = igt_create_fb(data->drm_fd,
+					      mode->hdisplay,
+					      mode->vdisplay,
+					      DRM_FORMAT_XRGB8888,
+					      LOCAL_DRM_FORMAT_MOD_NONE,
+					      &fbref);
+		igt_assert(fbref_id);
+
+		igt_plane_set_fb(primary, &fb_modeset);
+		disable_ctm(primary->pipe);
+		disable_degamma(primary->pipe);
+		set_gamma(data, primary->pipe, gamma_linear);
+		igt_display_commit(&data->display);
+
+		/* Draw solid colors with no degamma transformation. */
+		paint_rectangles(data, mode, red_green_blue, &fbref);
+
+		/* Draw a gradient with degamma LUT to remap all
+		 * values to max red/green/blue.
+		 */
+		paint_gradient_rectangles(data, mode, red_green_blue, &fb);
+		igt_plane_set_fb(primary, &fb);
+		set_degamma(data, primary->pipe, degamma_full);
+		igt_display_commit(&data->display);
+		chamelium_capture(data->chamelium, port, 0, 0, 0, 0, 1);
+		frame_fullcolors =
+			chamelium_read_captured_frame(data->chamelium, 0);
+
+		/* Verify that the framebuffer reference of the software
+		 * computed output is equal to the frame dump of the degamma
+		 * LUT transformation output.
+		 */
+		chamelium_frame_match_or_dump(data->chamelium, port,
+					      frame_fullcolors, &fbref,
+					      CHAMELIUM_CHECK_ANALOG);
+
+		igt_plane_set_fb(primary, NULL);
+		igt_output_set_pipe(output, PIPE_NONE);
+	}
+
+	free_lut(degamma_linear);
+	free_lut(degamma_full);
+	free_lut(gamma_linear);
+}
+
+/*
+ * Draw 3 gradient rectangles in red, green and blue, with a maxed out
+ * gamma LUT and verify we have the same frame dump as drawing solid
+ * color rectangles.
+ */
+static void test_pipe_gamma(data_t *data,
+			    igt_plane_t *primary)
+{
+	igt_output_t *output;
+	gamma_lut_t *gamma_full;
+	color_t red_green_blue[] = {
+		{ 1.0, 0.0, 0.0 },
+		{ 0.0, 1.0, 0.0 },
+		{ 0.0, 0.0, 1.0 }
+	};
+
+	int i;
+	struct chamelium_port *port;
+	char *connected_ports[4];
+
+	for (i = 0; i < data->port_count; i++)
+		connected_ports[i] =
+			(char *) chamelium_port_get_name(data->ports[i]);
+
+	igt_require(igt_pipe_obj_has_prop(primary->pipe, IGT_CRTC_GAMMA_LUT));
+
+	gamma_full = generate_table_max(data->gamma_lut_size);
+
+	for_each_valid_output_on_pipe(&data->display,
+				      primary->pipe->pipe,
+				      output) {
+		drmModeModeInfo *mode;
+		struct igt_fb fb_modeset, fb, fbref;
+		struct chamelium_frame_dump *frame_fullcolors;
+		int fb_id, fb_modeset_id, fbref_id;
+		bool valid_output = false;
+
+		for (i = 0; i < data->port_count; i++)
+			valid_output |=
+				(strcmp(output->name, connected_ports[i]) == 0);
+		if (!valid_output)
+			continue;
+		else
+			for (i = 0; i < data->port_count; i++)
+				if (strcmp(output->name,
+					   connected_ports[i]) == 0)
+					port = data->ports[i];
+
+		igt_output_set_pipe(output, primary->pipe->pipe);
+		mode = igt_output_get_mode(output);
+
+		/* Create a framebuffer at the size of the output. */
+		fb_id = igt_create_fb(data->drm_fd,
+				      mode->hdisplay,
+				      mode->vdisplay,
+				      DRM_FORMAT_XRGB8888,
+				      LOCAL_DRM_FORMAT_MOD_NONE,
+				      &fb);
+		igt_assert(fb_id);
+
+		fb_modeset_id = igt_create_fb(data->drm_fd,
+					      mode->hdisplay,
+					      mode->vdisplay,
+					      DRM_FORMAT_XRGB8888,
+					      LOCAL_DRM_FORMAT_MOD_NONE,
+					      &fb_modeset);
+		igt_assert(fb_modeset_id);
+
+		fbref_id = igt_create_fb(data->drm_fd,
+				      mode->hdisplay,
+				      mode->vdisplay,
+				      DRM_FORMAT_XRGB8888,
+				      LOCAL_DRM_FORMAT_MOD_NONE,
+				      &fbref);
+		igt_assert(fbref_id);
+
+		igt_plane_set_fb(primary, &fb_modeset);
+		disable_ctm(primary->pipe);
+		disable_degamma(primary->pipe);
+		set_gamma(data, primary->pipe, gamma_full);
+		igt_display_commit(&data->display);
+
+		/* Draw solid colors with no gamma transformation. */
+		paint_rectangles(data, mode, red_green_blue, &fbref);
+
+		/* Draw a gradient with gamma LUT to remap all values
+		 * to max red/green/blue.
+		 */
+		paint_gradient_rectangles(data, mode, red_green_blue, &fb);
+		igt_plane_set_fb(primary, &fb);
+		igt_display_commit(&data->display);
+		chamelium_capture(data->chamelium, port, 0, 0, 0, 0, 1);
+		frame_fullcolors =
+			chamelium_read_captured_frame(data->chamelium, 0);
+
+		/* Verify that the framebuffer reference of the software computed
+		 * output is equal to the frame dump of the degamma LUT
+		 * transformation output.
+		 */
+		chamelium_frame_match_or_dump(data->chamelium, port,
+					      frame_fullcolors, &fbref,
+					      CHAMELIUM_CHECK_ANALOG);
+
+		igt_plane_set_fb(primary, NULL);
+		igt_output_set_pipe(output, PIPE_NONE);
+	}
+
+	free_lut(gamma_full);
+}
+
+/*
+ * Draw 3 rectangles using before colors with the ctm matrix apply and verify
+ * the frame dump is equal to using after colors with an identify ctm matrix.
+ */
+static bool test_pipe_ctm(data_t *data,
+			  igt_plane_t *primary,
+			  color_t *before,
+			  color_t *after,
+			  double *ctm_matrix)
+{
+	gamma_lut_t *degamma_linear, *gamma_linear;
+	igt_output_t *output;
+
+	int i;
+	bool ret = true;
+	struct chamelium_port *port;
+	char *connected_ports[4];
+
+	igt_require(igt_pipe_obj_has_prop(primary->pipe, IGT_CRTC_CTM));
+
+	for (i = 0; i < data->port_count; i++)
+		connected_ports[i] =
+			(char *) chamelium_port_get_name(data->ports[i]);
+
+	degamma_linear = generate_table(data->degamma_lut_size, 1.0);
+	gamma_linear = generate_table(data->gamma_lut_size, 1.0);
+
+	for_each_valid_output_on_pipe(&data->display,
+				      primary->pipe->pipe,
+				      output) {
+		drmModeModeInfo *mode;
+		struct igt_fb fb_modeset, fb, fbref;
+		struct chamelium_frame_dump *frame_hardware;
+		int fb_id, fb_modeset_id, fbref_id;
+		bool valid_output = false;
+
+		for (i = 0; i < data->port_count; i++)
+			valid_output |=
+				(strcmp(output->name, connected_ports[i]) == 0);
+		if (!valid_output)
+			continue;
+		else
+			for (i = 0; i < data->port_count; i++)
+				if (strcmp(output->name,
+					   connected_ports[i]) == 0)
+					port = data->ports[i];
+
+		igt_output_set_pipe(output, primary->pipe->pipe);
+		mode = igt_output_get_mode(output);
+
+		/* Create a framebuffer at the size of the output. */
+		fb_id = igt_create_fb(data->drm_fd,
+				      mode->hdisplay,
+				      mode->vdisplay,
+				      DRM_FORMAT_XRGB8888,
+				      LOCAL_DRM_FORMAT_MOD_NONE,
+				      &fb);
+		igt_assert(fb_id);
+
+		fb_modeset_id = igt_create_fb(data->drm_fd,
+					      mode->hdisplay,
+					      mode->vdisplay,
+					      DRM_FORMAT_XRGB8888,
+					      LOCAL_DRM_FORMAT_MOD_NONE,
+					      &fb_modeset);
+		igt_assert(fb_modeset_id);
+
+		fbref_id = igt_create_fb(data->drm_fd,
+				      mode->hdisplay,
+				      mode->vdisplay,
+				      DRM_FORMAT_XRGB8888,
+				      LOCAL_DRM_FORMAT_MOD_NONE,
+				      &fbref);
+		igt_assert(fbref_id);
+
+		igt_plane_set_fb(primary, &fb_modeset);
+
+		if (memcmp(before, after, sizeof(color_t))) {
+			set_degamma(data, primary->pipe, degamma_linear);
+			set_gamma(data, primary->pipe, gamma_linear);
+		} else {
+			/* Disable Degamma and Gamma for ctm max test */
+			disable_degamma(primary->pipe);
+			disable_gamma(primary->pipe);
+		}
+
+		disable_ctm(primary->pipe);
+		igt_display_commit(&data->display);
+
+		paint_rectangles(data, mode, after, &fbref);
+
+		/* With CTM transformation. */
+		paint_rectangles(data, mode, before, &fb);
+		igt_plane_set_fb(primary, &fb);
+		set_ctm(primary->pipe, ctm_matrix);
+		igt_display_commit(&data->display);
+		chamelium_capture(data->chamelium, port, 0, 0, 0, 0, 1);
+		frame_hardware =
+			chamelium_read_captured_frame(data->chamelium, 0);
+
+		/* Verify that the framebuffer reference of the software
+		 * computed output is equal to the frame dump of the CTM
+		 * matrix transformation output.
+		 */
+		ret &= chamelium_frame_match_or_dump(data->chamelium, port,
+						     frame_hardware,
+						     &fbref,
+						     CHAMELIUM_CHECK_ANALOG);
+
+		igt_plane_set_fb(primary, NULL);
+		igt_output_set_pipe(output, PIPE_NONE);
+	}
+
+	free_lut(degamma_linear);
+	free_lut(gamma_linear);
+
+	return ret;
+}
+
+static void test_pipe_limited_range_ctm(data_t *data,
+					igt_plane_t *primary)
+{
+	double limited_result = 235.0 / 255.0;
+	color_t red_green_blue_limited[] = {
+		{ limited_result, 0.0, 0.0 },
+		{ 0.0, limited_result, 0.0 },
+		{ 0.0, 0.0, limited_result }
+	};
+	color_t red_green_blue_full[] = {
+		{ 0.5, 0.0, 0.0 },
+		{ 0.0, 0.5, 0.0 },
+		{ 0.0, 0.0, 0.5 }
+	};
+	double ctm[] = { 1.0, 0.0, 0.0,
+			0.0, 1.0, 0.0,
+			0.0, 0.0, 1.0 };
+	gamma_lut_t *degamma_linear, *gamma_linear;
+	igt_output_t *output;
+	bool has_broadcast_rgb_output = false;
+
+	int i;
+	struct chamelium_port *port;
+	char *connected_ports[4];
+
+	degamma_linear = generate_table(data->degamma_lut_size, 1.0);
+	gamma_linear = generate_table(data->gamma_lut_size, 1.0);
+
+	for (i = 0; i < data->port_count; i++)
+		connected_ports[i] =
+			(char *) chamelium_port_get_name(data->ports[i]);
+
+	for_each_valid_output_on_pipe(&data->display,
+				      primary->pipe->pipe,
+				      output) {
+		drmModeModeInfo *mode;
+		struct igt_fb fb_modeset, fb, fbref;
+		struct chamelium_frame_dump *frame_limited;
+		int fb_id, fb_modeset_id, fbref_id;
+		bool valid_output = false;
+
+		for (i = 0; i < data->port_count; i++)
+			valid_output |=
+				(strcmp(output->name, connected_ports[i]) == 0);
+		if (!valid_output)
+			continue;
+		else
+			for (i = 0; i < data->port_count; i++)
+				if (strcmp(output->name,
+				    connected_ports[i]) == 0)
+					port = data->ports[i];
+
+		if (!igt_output_has_prop(output, IGT_CONNECTOR_BROADCAST_RGB))
+			continue;
+
+		has_broadcast_rgb_output = true;
+
+		igt_output_set_pipe(output, primary->pipe->pipe);
+		mode = igt_output_get_mode(output);
+
+		/* Create a framebuffer at the size of the output. */
+		fb_id = igt_create_fb(data->drm_fd,
+				      mode->hdisplay,
+				      mode->vdisplay,
+				      DRM_FORMAT_XRGB8888,
+				      LOCAL_DRM_FORMAT_MOD_NONE,
+				      &fb);
+		igt_assert(fb_id);
+
+		fb_modeset_id = igt_create_fb(data->drm_fd,
+					      mode->hdisplay,
+					      mode->vdisplay,
+					      DRM_FORMAT_XRGB8888,
+					      LOCAL_DRM_FORMAT_MOD_NONE,
+					      &fb_modeset);
+		igt_assert(fb_modeset_id);
+
+		fbref_id = igt_create_fb(data->drm_fd,
+				      mode->hdisplay,
+				      mode->vdisplay,
+				      DRM_FORMAT_XRGB8888,
+				      LOCAL_DRM_FORMAT_MOD_NONE,
+				      &fbref);
+		igt_assert(fbref_id);
+
+		igt_plane_set_fb(primary, &fb_modeset);
+
+		set_degamma(data, primary->pipe, degamma_linear);
+		set_gamma(data, primary->pipe, gamma_linear);
+		set_ctm(primary->pipe, ctm);
+
+		igt_output_set_prop_value(output,
+					  IGT_CONNECTOR_BROADCAST_RGB,
+					  BROADCAST_RGB_FULL);
+		paint_rectangles(data, mode, red_green_blue_limited, &fb);
+		igt_plane_set_fb(primary, &fb);
+		igt_display_commit(&data->display);
+
+		/* Set the output into limited range. */
+		igt_output_set_prop_value(output,
+					  IGT_CONNECTOR_BROADCAST_RGB,
+					  BROADCAST_RGB_16_235);
+		paint_rectangles(data, mode, red_green_blue_full, &fb);
+
+		/* And reset.. */
+		igt_output_set_prop_value(output,
+					  IGT_CONNECTOR_BROADCAST_RGB,
+					  BROADCAST_RGB_FULL);
+		igt_plane_set_fb(primary, NULL);
+		igt_output_set_pipe(output, PIPE_NONE);
+		chamelium_capture(data->chamelium, port, 0, 0, 0, 0, 1);
+		frame_limited =
+			chamelium_read_captured_frame(data->chamelium, 0);
+
+
+		/* Verify that the framebuffer reference of the software
+		 * computed output is equal to the frame dump of the CTM
+		 * matrix transformation output.
+		 */
+		chamelium_frame_match_or_dump(data->chamelium, port,
+					      frame_limited, &fbref,
+					      CHAMELIUM_CHECK_ANALOG);
+
+	}
+
+	free_lut(gamma_linear);
+	free_lut(degamma_linear);
+
+	igt_require(has_broadcast_rgb_output);
+}
+
+static void
+run_tests_for_pipe(data_t *data, enum pipe p)
+{
+	igt_pipe_t *pipe;
+	igt_plane_t *primary;
+	double delta;
+	int i;
+	color_t red_green_blue[] = {
+		{ 1.0, 0.0, 0.0 },
+		{ 0.0, 1.0, 0.0 },
+		{ 0.0, 0.0, 1.0 }
+	};
+
+	igt_fixture {
+
+		igt_require(p < data->display.n_pipes);
+
+		pipe = &data->display.pipes[p];
+		igt_require(pipe->n_planes >= 0);
+
+		primary = igt_pipe_get_plane_type(pipe, DRM_PLANE_TYPE_PRIMARY);
+
+		if (igt_pipe_obj_has_prop(&data->display.pipes[p],
+					  IGT_CRTC_DEGAMMA_LUT_SIZE)) {
+			data->degamma_lut_size =
+				igt_pipe_obj_get_prop(&data->display.pipes[p],
+						IGT_CRTC_DEGAMMA_LUT_SIZE);
+			igt_assert_lt(0, data->degamma_lut_size);
+		}
+
+		if (igt_pipe_obj_has_prop(&data->display.pipes[p],
+					  IGT_CRTC_GAMMA_LUT_SIZE)) {
+			data->gamma_lut_size =
+				igt_pipe_obj_get_prop(&data->display.pipes[p],
+						      IGT_CRTC_GAMMA_LUT_SIZE);
+			igt_assert_lt(0, data->gamma_lut_size);
+		}
+
+		igt_display_require_output_on_pipe(&data->display, p);
+	}
+
+	data->color_depth = 8;
+	delta = 1.0 / (1 << data->color_depth);
+
+	igt_describe("Compare after applying ctm matrix & identity matrix");
+	igt_subtest_f("pipe-%s-ctm-red-to-blue", kmstest_pipe_name(p)) {
+		color_t blue_green_blue[] = {
+			{ 0.0, 0.0, 1.0 },
+			{ 0.0, 1.0, 0.0 },
+			{ 0.0, 0.0, 1.0 }
+		};
+		double ctm[] = { 0.0, 0.0, 0.0,
+				0.0, 1.0, 0.0,
+				1.0, 0.0, 1.0 };
+		igt_assert(test_pipe_ctm(data, primary, red_green_blue,
+					 blue_green_blue, ctm));
+	}
+
+	igt_describe("Compare after applying ctm matrix & identity matrix");
+	igt_subtest_f("pipe-%s-ctm-green-to-red", kmstest_pipe_name(p)) {
+		color_t red_red_blue[] = {
+			{ 1.0, 0.0, 0.0 },
+			{ 1.0, 0.0, 0.0 },
+			{ 0.0, 0.0, 1.0 }
+		};
+		double ctm[] = { 1.0, 1.0, 0.0,
+				0.0, 0.0, 0.0,
+				0.0, 0.0, 1.0 };
+		igt_assert(test_pipe_ctm(data, primary, red_green_blue,
+					 red_red_blue, ctm));
+	}
+
+	igt_describe("Compare after applying ctm matrix & identity matrix");
+	igt_subtest_f("pipe-%s-ctm-blue-to-red", kmstest_pipe_name(p)) {
+		color_t red_green_red[] = {
+			{ 1.0, 0.0, 0.0 },
+			{ 0.0, 1.0, 0.0 },
+			{ 1.0, 0.0, 0.0 }
+		};
+		double ctm[] = { 1.0, 0.0, 1.0,
+				0.0, 1.0, 0.0,
+				0.0, 0.0, 0.0 };
+		igt_assert(test_pipe_ctm(data, primary, red_green_blue,
+					 red_green_red, ctm));
+	}
+
+	/* We tests a few values around the expected result because
+	 * the it depends on the hardware we're dealing with, we can
+	 * either get clamped or rounded values and we also need to
+	 * account for odd number of items in the LUTs.
+	 */
+	igt_describe("Compare after applying ctm matrix & identity matrix");
+	igt_subtest_f("pipe-%s-ctm-0-25", kmstest_pipe_name(p)) {
+		color_t expected_colors[] = {
+			{ 0.0, }, { 0.0, }, { 0.0, }
+		};
+		double ctm[] = { 0.25, 0.0,  0.0,
+				 0.0,  0.25, 0.0,
+				 0.0,  0.0,  0.25 };
+		bool success = false;
+
+		for (i = 0; i < 5; i++) {
+			expected_colors[0].r =
+				expected_colors[1].g =
+				expected_colors[2].b =
+				0.25 + delta * (i - 2);
+			success |= test_pipe_ctm(data, primary,
+						 red_green_blue,
+						 expected_colors, ctm);
+		}
+		igt_assert(success);
+	}
+
+	igt_describe("Compare after applying ctm matrix & identity matrix");
+	igt_subtest_f("pipe-%s-ctm-0-5", kmstest_pipe_name(p)) {
+		color_t expected_colors[] = {
+			{ 0.0, }, { 0.0, }, { 0.0, }
+		};
+		double ctm[] = { 0.5, 0.0, 0.0,
+				 0.0, 0.5, 0.0,
+				 0.0, 0.0, 0.5 };
+		bool success = false;
+
+		for (i = 0; i < 5; i++) {
+			expected_colors[0].r =
+				expected_colors[1].g =
+				expected_colors[2].b =
+				0.5 + delta * (i - 2);
+			success |= test_pipe_ctm(data, primary,
+						 red_green_blue,
+						 expected_colors, ctm);
+		}
+		igt_assert(success);
+	}
+
+	igt_describe("Compare after applying ctm matrix & identity matrix");
+	igt_subtest_f("pipe-%s-ctm-0-75", kmstest_pipe_name(p)) {
+		color_t expected_colors[] = {
+			{ 0.0, }, { 0.0, }, { 0.0, }
+		};
+		double ctm[] = { 0.75, 0.0,  0.0,
+				 0.0,  0.75, 0.0,
+				 0.0,  0.0,  0.75 };
+		bool success = false;
+
+		for (i = 0; i < 7; i++) {
+			expected_colors[0].r =
+				expected_colors[1].g =
+				expected_colors[2].b =
+				0.75 + delta * (i - 3);
+			success |= test_pipe_ctm(data, primary,
+						 red_green_blue,
+						 expected_colors, ctm);
+		}
+		igt_assert(success);
+	}
+
+	igt_describe("Compare after applying ctm matrix & identity matrix");
+	igt_subtest_f("pipe-%s-ctm-max", kmstest_pipe_name(p)) {
+		color_t full_rgb[] = {
+			{ 1.0, 0.0, 0.0 },
+			{ 0.0, 1.0, 0.0 },
+			{ 0.0, 0.0, 1.0 }
+		};
+		double ctm[] = { 100.0,   0.0,   0.0,
+				 0.0,   100.0,   0.0,
+				 0.0,     0.0, 100.0 };
+
+		/* CherryView generates values on 10bits that we
+		 * produce with an 8 bits per color framebuffer.
+		 */
+		igt_require(!IS_CHERRYVIEW(data->devid));
+
+		igt_assert(test_pipe_ctm(data, primary, red_green_blue,
+					 full_rgb, ctm));
+	}
+
+	igt_describe("Compare after applying ctm matrix & identity matrix");
+	igt_subtest_f("pipe-%s-ctm-negative", kmstest_pipe_name(p)) {
+		color_t all_black[] = {
+			{ 0.0, 0.0, 0.0 },
+			{ 0.0, 0.0, 0.0 },
+			{ 0.0, 0.0, 0.0 }
+		};
+		double ctm[] = { -1.0,  0.0,  0.0,
+				 0.0, -1.0,  0.0,
+				 0.0,  0.0, -1.0 };
+		igt_assert(test_pipe_ctm(data, primary, red_green_blue,
+					 all_black, ctm));
+	}
+
+	igt_describe("Compare after applying ctm matrix & identity matrix");
+	igt_subtest_f("pipe-%s-ctm-limited-range", kmstest_pipe_name(p))
+		test_pipe_limited_range_ctm(data, primary);
+
+	igt_describe("Compare maxed out gamma LUT and solid color linear LUT");
+	igt_subtest_f("pipe-%s-degamma", kmstest_pipe_name(p))
+		test_pipe_degamma(data, primary);
+
+	igt_describe("Compare maxed out gamma LUT and solid color linear LUT");
+	igt_subtest_f("pipe-%s-gamma", kmstest_pipe_name(p))
+		test_pipe_gamma(data, primary);
+
+	igt_fixture {
+		disable_degamma(primary->pipe);
+		disable_gamma(primary->pipe);
+		disable_ctm(primary->pipe);
+		igt_display_commit(&data->display);
+	}
+}
+
+igt_main
+{
+	data_t data = {};
+	enum pipe pipe;
+
+	igt_fixture {
+		data.drm_fd = drm_open_driver_master(DRIVER_ANY);
+		if (is_i915_device(data.drm_fd))
+			data.devid = intel_get_drm_devid(data.drm_fd);
+		data.chamelium = chamelium_init(data.drm_fd);
+		igt_require(data.chamelium);
+
+		data.ports = chamelium_get_ports(data.chamelium,
+						 &data.port_count);
+
+		if (!data.port_count)
+			igt_skip("No ports connected\n");
+
+		kmstest_set_vt_graphics_mode();
+		igt_display_require(&data.display, data.drm_fd);
+		igt_require(data.display.is_atomic);
+	}
+
+	for_each_pipe_static(pipe)
+		igt_subtest_group
+			run_tests_for_pipe(&data, pipe);
+	igt_describe("Negative test case gamma lut size");
+	igt_subtest_f("pipe-invalid-gamma-lut-sizes")
+		invalid_gamma_lut_sizes(&data);
+
+	igt_describe("Negative test case degamma lut size");
+	igt_subtest_f("pipe-invalid-degamma-lut-sizes")
+		invalid_degamma_lut_sizes(&data);
+
+	igt_describe("Negative test case ctm matrix size");
+	igt_subtest_f("pipe-invalid-ctm-matrix-sizes")
+		invalid_ctm_matrix_sizes(&data);
+
+	igt_fixture {
+		igt_display_fini(&data.display);
+	}
+}
-- 
2.7.4



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