[PATCH i-g-t, v3 09/11] tests/chamelium/kms_chamelium_sharpness_filter: Add basic test

[Swati Sharma <swati2.sharma@intel.com>]

Add new chamelium based sharpness test. Basic test is added where
we have tried comparing frame dump of unsharped and sharped image.
After, sharpness filter is applied its expected both frame dumps
will be different.

v2: -removed MIN/MAX_FILTER_STRENGTH (Ankit)
    -fixed alignment (Ankit)
    -removed commit with fb_ref (Ankit)
    -set data->pipe_id (Ankit)
    -removed disable_filter_strength_on_pipe()
    -fixed CRASH
    -fixed assert condition
v3: -minor fixes

Signed-off-by: Swati Sharma <swati2.sharma@intel.com>
---
 .../kms_chamelium_sharpness_filter.c          | 236 ++++++++++++++++++
 tests/meson.build                             |   2 +
 2 files changed, 238 insertions(+)
 create mode 100644 tests/chamelium/kms_chamelium_sharpness_filter.c

diff --git a/tests/chamelium/kms_chamelium_sharpness_filter.c b/tests/chamelium/kms_chamelium_sharpness_filter.c
new file mode 100644
index 000000000..70903b5f8
--- /dev/null
+++ b/tests/chamelium/kms_chamelium_sharpness_filter.c
@@ -0,0 +1,236 @@
+// SPDX-License-Identifier: MIT
+/*
+ * Copyright © 2025 Intel Corporation
+ */
+
+/**
+ * TEST: kms chamelium sharpness filter
+ * Category: Display
+ * Description: Test to validate content adaptive sharpness filter using Chamelium
+ * Driver requirement: xe
+ * Functionality: chamelium, casf
+ * Mega feature: General Display Features
+ * Test category: functionality test
+ */
+
+#include "igt.h"
+#include "igt_kms.h"
+
+/**
+ * SUBTEST: filter-basic
+ * Description: Verify basic content adaptive sharpness filter.
+ */
+
+IGT_TEST_DESCRIPTION("Test to validate content adaptive sharpness filter using Chamelium");
+
+#define MID_FILTER_STRENGTH		128
+
+typedef struct {
+	int drm_fd;
+	enum pipe pipe_id;
+	struct igt_fb fb, fb_ref;
+	igt_display_t display;
+	igt_output_t *output;
+	igt_plane_t *primary;
+	drmModeModeInfo *mode;
+	int filter_strength;
+	struct chamelium *chamelium;
+	struct chamelium_port **ports;
+	int port_count;
+} data_t;
+
+static bool pipe_output_combo_valid(data_t *data, enum pipe pipe)
+{
+	bool ret = true;
+
+	igt_output_set_pipe(data->output, pipe);
+	if (!intel_pipe_output_combo_valid(&data->display))
+		ret = false;
+	igt_output_set_pipe(data->output, PIPE_NONE);
+
+	return ret;
+}
+
+static void set_filter_strength_on_pipe(data_t *data)
+{
+	igt_pipe_set_prop_value(&data->display, data->pipe_id,
+				IGT_CRTC_SHARPNESS_STRENGTH,
+				data->filter_strength);
+}
+
+static void paint_image(igt_fb_t *fb)
+{
+	cairo_t *cr = igt_get_cairo_ctx(fb->fd, fb);
+	int img_x, img_y, img_w, img_h;
+	const char *file = "1080p-left.png";
+
+	img_x = img_y = 0;
+	img_w = fb->width;
+	img_h = fb->height;
+
+	igt_paint_image(cr, file, img_x, img_y, img_w, img_h);
+
+	igt_put_cairo_ctx(cr);
+}
+
+static void setup_fb(int fd, int width, int height, uint32_t format,
+		     uint64_t modifier, struct igt_fb *fb)
+{
+	int fb_id;
+
+	fb_id = igt_create_fb(fd, width, height, format, modifier, fb);
+	igt_assert(fb_id);
+
+	paint_image(fb);
+}
+
+static void cleanup(data_t *data)
+{
+	igt_remove_fb(data->drm_fd, &data->fb);
+	igt_remove_fb(data->drm_fd, &data->fb_ref);
+	igt_output_set_pipe(data->output, PIPE_NONE);
+	igt_output_override_mode(data->output, NULL);
+	igt_display_commit2(&data->display, COMMIT_ATOMIC);
+}
+
+static bool test_t(data_t *data, igt_plane_t *primary,
+		   struct chamelium_port *port)
+{
+	struct chamelium_frame_dump *dump;
+	drmModeModeInfo *mode;
+	int height, width;
+	bool ret = false;
+
+	igt_output_set_pipe(data->output, data->pipe_id);
+
+	mode = igt_output_get_mode(data->output);
+	height = mode->hdisplay;
+	width = mode->vdisplay;
+
+	setup_fb(data->drm_fd, height, width, DRM_FORMAT_XRGB8888, DRM_FORMAT_MOD_LINEAR, &data->fb_ref);
+	setup_fb(data->drm_fd, height, width, DRM_FORMAT_XRGB8888, DRM_FORMAT_MOD_LINEAR, &data->fb);
+
+	igt_plane_set_fb(data->primary, &data->fb);
+	set_filter_strength_on_pipe(data);
+	igt_display_commit2(&data->display, COMMIT_ATOMIC);
+
+	igt_debug("Reading frame dumps from Chamelium...\n");
+	chamelium_capture(data->chamelium, port, 0, 0, 0, 0, 1);
+	dump = chamelium_read_captured_frame(data->chamelium, 0);
+
+	ret = chamelium_frame_match_or_dump(data->chamelium, port,
+					    dump, &data->fb_ref,
+					    CHAMELIUM_CHECK_ANALOG);
+	chamelium_destroy_frame_dump(dump);
+	cleanup(data);
+
+	return ret;
+}
+
+static int test_setup(data_t *data, enum pipe p)
+{
+	igt_pipe_t *pipe;
+	int i = 0;
+
+	igt_display_reset(&data->display);
+
+	pipe = &data->display.pipes[p];
+	igt_require(pipe->n_planes >= 0);
+
+	data->primary = igt_pipe_get_plane_type(pipe, DRM_PLANE_TYPE_PRIMARY);
+	igt_assert(data->primary);
+
+	/*
+	 * Prefer to run this test on HDMI connector if its connected, since on DP we
+	 * sometimes face DP FSM issue
+	 */
+        for_each_valid_output_on_pipe(&data->display, p, data->output) {
+		data->pipe_id = p;
+		for (i = 0; i < data->port_count; i++) {
+			if ((data->output->config.connector->connector_type == DRM_MODE_CONNECTOR_HDMIA ||
+			     data->output->config.connector->connector_type == DRM_MODE_CONNECTOR_HDMIB) &&
+			     strcmp(data->output->name, chamelium_port_get_name(data->ports[i])) == 0)
+				return i;
+		}
+	}
+
+	for_each_valid_output_on_pipe(&data->display, p, data->output) {
+		data->pipe_id = p;
+		for (i = 0; i < data->port_count; i++) {
+			if (strcmp(data->output->name,
+				   chamelium_port_get_name(data->ports[i])) == 0)
+				return i;
+		}
+	}
+
+	return -1;
+}
+
+static void test_sharpness_filter(data_t *data,  enum pipe p)
+{
+	int port_idx = test_setup(data, p);
+
+	igt_require(port_idx >= 0);
+	igt_require(igt_pipe_obj_has_prop(&data->display.pipes[p], IGT_CRTC_SHARPNESS_STRENGTH));
+
+	if (!pipe_output_combo_valid(data, p))
+		return;
+
+	igt_dynamic_f("pipe-%s-%s", kmstest_pipe_name(p), data->output->name)
+		igt_assert_f((test_t(data, data->primary, data->ports[port_idx]) == 1), "No sharpness observed.\n");
+}
+
+static void
+run_sharpness_filter_test(data_t *data)
+{
+	igt_display_t *display = &data->display;
+	enum pipe pipe;
+
+	igt_describe("Verify basic content adaptive sharpness filter.");
+	igt_subtest_with_dynamic("filter-basic") {
+		for_each_pipe(display, pipe) {
+			data->filter_strength = MID_FILTER_STRENGTH;
+			test_sharpness_filter(data, pipe);
+		}
+	}
+}
+
+igt_main
+{
+	data_t data = {};
+
+	igt_fixture {
+		data.drm_fd = drm_open_driver_master(DRIVER_ANY);
+
+		igt_display_require(&data.display, data.drm_fd);
+		igt_require(data.display.is_atomic);
+
+		igt_chamelium_allow_fsm_handling = false;
+
+		/* we need to initalize chamelium after igt_display_require */
+		data.chamelium = chamelium_init(data.drm_fd, &data.display);
+		igt_require(data.chamelium);
+
+		data.ports = chamelium_get_ports(data.chamelium,
+						 &data.port_count);
+
+		if (!data.port_count)
+			igt_skip("No ports connected\n");
+		/*
+		 * We don't cause any harm by plugging
+		 * discovered ports, just incase they are not plugged
+		 * we currently skip in test_setup
+		 */
+		for(int i = 0; i < data.port_count; i++)
+			chamelium_plug(data.chamelium, data.ports[i]);
+
+		kmstest_set_vt_graphics_mode();
+	}
+
+	run_sharpness_filter_test(&data);
+
+	igt_fixture {
+		igt_display_fini(&data.display);
+		drm_close_driver(data.drm_fd);
+	}
+}
diff --git a/tests/meson.build b/tests/meson.build
index aac3b4e10..09f7ed24b 100644
--- a/tests/meson.build
+++ b/tests/meson.build
@@ -345,6 +345,7 @@ chamelium_progs = [
 	'kms_chamelium_edid',
 	'kms_chamelium_frames',
 	'kms_chamelium_hpd',
+	'kms_chamelium_sharpness_filter',
 ]
 
 test_deps = [ igt_deps ]
@@ -370,6 +371,7 @@ extra_sources = {
 	'kms_chamelium_edid': [ join_paths ('chamelium', 'kms_chamelium_helper.c') ],
 	'kms_chamelium_frames': [ join_paths ('chamelium', 'kms_chamelium_helper.c') ],
 	'kms_chamelium_hpd': [ join_paths ('chamelium', 'kms_chamelium_helper.c') ],
+	'kms_chamelium_sharpness_filter': [ join_paths ('chamelium', 'kms_chamelium_helper.c') ],
 	'kms_dp_linktrain_fallback': [
            join_paths ('intel', 'kms_mst_helper.c'),
            join_paths ('intel', 'kms_dsc_helper.c') ],
-- 
2.25.1