To verify Plane gamma, 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.

Cc: Harry Wentland <harry.wentl...@amd.com>
Cc: Ville Syrjälä <ville.syrj...@linux.intel.com>
Cc: Juha-Pekka Heikkila <juhapekka.heikk...@gmail.com>
Cc: Uma Shankar <uma.shan...@intel.com>
Cc: Kunal Joshi <kunal1.jo...@intel.com>
Signed-off-by: Bhanuprakash Modem <bhanuprakash.mo...@intel.com>
---
 tests/kms_color_chamelium.c | 188 +++++++++++++++++++++++++++++++++++-
 1 file changed, 187 insertions(+), 1 deletion(-)

diff --git a/tests/kms_color_chamelium.c b/tests/kms_color_chamelium.c
index 76f82d6d35..b506109271 100644
--- a/tests/kms_color_chamelium.c
+++ b/tests/kms_color_chamelium.c
@@ -24,7 +24,34 @@
 
 #include "kms_color_helper.h"
 
-IGT_TEST_DESCRIPTION("Test Color Features at Pipe level using Chamelium to 
verify instead of CRC");
+IGT_TEST_DESCRIPTION("Test Color Features at Pipe & Plane level using 
Chamelium to verify instead of CRC");
+
+#define MAX_SUPPORTED_PLANES 7
+#define SDR_PLANE_BASE 3
+
+typedef bool (*test_t)(data_t*, igt_plane_t*);
+
+static bool is_hdr_plane(const igt_plane_t *plane)
+{
+       return plane->index >= 0 && plane->index < SDR_PLANE_BASE;
+}
+
+static bool is_valid_plane(igt_plane_t *plane)
+{
+       int index = plane->index;
+
+       if (plane->type != DRM_PLANE_TYPE_PRIMARY)
+               return false;
+
+       /*
+        * Test 1 HDR plane, 1 SDR plane.
+        *
+        * 0,1,2 HDR planes
+        * 3,4,5,6 SDR planes
+        *
+        */
+       return index >= 0 && index < MAX_SUPPORTED_PLANES;
+}
 
 /*
  * Draw 3 gradient rectangles in red, green and blue, with a maxed out
@@ -723,6 +750,161 @@ run_tests_for_pipe(data_t *data, enum pipe p)
        }
 }
 
+static bool plane_gamma_test(data_t *data, igt_plane_t *plane)
+{
+       igt_output_t *output;
+       igt_display_t *display = &data->display;
+       drmModeModeInfo *mode;
+       struct igt_fb fb, fbref;
+       drmModePropertyPtr gamma_mode = NULL;
+       uint32_t i;
+       bool ret = true;
+       struct chamelium_port *port = NULL;
+       color_t red_green_blue[] = {
+               { 1.0, 0.0, 0.0 },
+               { 0.0, 1.0, 0.0 },
+               { 0.0, 0.0, 1.0 }
+       };
+
+       igt_info("Plane gamma test is running on pipe-%s plane-%s(%s)\n",
+                       kmstest_pipe_name(plane->pipe->pipe),
+                       kmstest_plane_type_name(plane->type),
+                       is_hdr_plane(plane) ? "hdr":"sdr");
+
+       igt_require(igt_plane_has_prop(plane, IGT_PLANE_GAMMA_MODE));
+       igt_require(igt_plane_has_prop(plane, IGT_PLANE_GAMMA_LUT));
+
+       for_each_valid_output_on_pipe(display, plane->pipe->pipe, output) {
+               for (i = 0; i < data->port_count; i++)
+                       if (strcmp(output->name, 
chamelium_port_get_name(data->ports[i])) == 0) {
+                               port = data->ports[i];
+                               break;
+                       }
+
+               if (port)
+                       break;
+       }
+       igt_require(port);
+       igt_assert(output);
+
+       igt_output_set_pipe(output, plane->pipe->pipe);
+       mode = igt_output_get_mode(output);
+
+       /* Create a framebuffer at the size of the output. */
+       igt_assert(igt_create_fb(data->drm_fd,
+                             mode->hdisplay,
+                             mode->vdisplay,
+                             DRM_FORMAT_XRGB8888,
+                             DRM_FORMAT_MOD_LINEAR,
+                             &fb));
+
+       igt_assert(igt_create_fb(data->drm_fd,
+                             mode->hdisplay,
+                             mode->vdisplay,
+                             DRM_FORMAT_XRGB8888,
+                             DRM_FORMAT_MOD_LINEAR,
+                             &fbref));
+
+       disable_degamma(plane->pipe);
+       disable_ctm(plane->pipe);
+       disable_gamma(plane->pipe);
+
+       disable_plane_degamma(plane);
+       disable_plane_ctm(plane);
+       disable_plane_gamma(plane);
+
+       igt_plane_set_fb(plane, &fbref);
+       igt_display_commit2(display, display->is_atomic ?
+                               COMMIT_ATOMIC : COMMIT_LEGACY);
+
+       /* Draw solid colors with no gamma transformation. */
+       paint_rectangles(data, mode, red_green_blue, &fbref);
+
+       gamma_mode = get_plane_gamma_degamma_mode(plane, IGT_PLANE_GAMMA_MODE);
+       /* Iterate all supported gamma modes. */
+       for (i = 0; i < gamma_mode->count_enums; i++) {
+               struct chamelium_frame_dump *frame_fullcolors;
+               segment_data_t *segment_info = NULL;
+               struct drm_color_lut_ext *lut = NULL;
+               uint32_t lut_size = 0;
+
+               /* Ignore 'no gamma' from enum list. */
+               if (!strcmp(gamma_mode->enums[i].name, "no gamma"))
+                       continue;
+
+               igt_info("Trying to use gamma mode: \'%s\'\n", 
gamma_mode->enums[i].name);
+
+               segment_info = get_segment_data(data, 
gamma_mode->enums[i].value,
+                               gamma_mode->enums[i].name);
+               lut_size = sizeof(struct drm_color_lut_ext) * 
segment_info->entries_count;
+               lut = create_max_lut(segment_info);
+               set_plane_gamma(plane, gamma_mode->enums[i].name, lut, 
lut_size);
+
+               /* 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(plane, &fb);
+               igt_display_commit2(display, display->is_atomic ?
+                                       COMMIT_ATOMIC : COMMIT_LEGACY);
+
+               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 gamma LUT
+                * transformation output.
+                */
+               ret &= chamelium_frame_match_or_dump(data->chamelium, port,
+                                             frame_fullcolors, &fbref,
+                                             CHAMELIUM_CHECK_ANALOG);
+               free(lut);
+               clear_segment_data(segment_info);
+       }
+
+       disable_plane_gamma(plane);
+       igt_plane_set_fb(plane, NULL);
+       igt_output_set_pipe(output, PIPE_NONE);
+       igt_display_commit2(display, display->is_atomic ?
+                                       COMMIT_ATOMIC : COMMIT_LEGACY);
+
+       drmModeFreeProperty(gamma_mode);
+
+       return ret;
+}
+
+static void run_plane_color_test(data_t *data, enum pipe pipe, test_t test)
+{
+       igt_plane_t *plane;
+       int count = 0;
+
+       for_each_plane_on_pipe(&data->display, pipe, plane) {
+               if (!is_valid_plane(plane))
+                       continue;
+
+               igt_assert(test(data, plane));
+
+               count++;
+       }
+
+       igt_require_f(count, "No valid planes found.\n");
+}
+
+static void run_tests_for_plane(data_t *data, enum pipe pipe)
+{
+       igt_fixture {
+               igt_require_pipe(&data->display, pipe);
+               igt_require(data->display.pipes[pipe].n_planes > 0);
+               igt_display_require_output_on_pipe(&data->display, pipe);
+       }
+
+       igt_describe("Compare maxed out plane gamma LUT and solid color linear 
LUT");
+       igt_subtest_f("pipe-%s-plane-gamma",
+                       kmstest_pipe_name(pipe))
+               run_plane_color_test(data, pipe, plane_gamma_test);
+}
+
 igt_main
 {
        data_t data = {};
@@ -755,6 +937,10 @@ igt_main
                igt_subtest_group
                        run_tests_for_pipe(&data, pipe);
 
+       for_each_pipe_static(pipe)
+               igt_subtest_group
+                       run_tests_for_plane(&data, pipe);
+
        igt_fixture {
                igt_display_fini(&data.display);
        }
-- 
2.32.0

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