[PATCH 10/10] kms_drrs: Test DRRS entry and exit

[Vandana Kannan <vandana.kannan@intel.com>]

This test just display a frame on screen, waits for 1 second to enter DRRS
and displays another frame to exit DRRS.
TODO:- Notify the user about which refresh rate was used at different stages.

Signed-off-by: Vandana Kannan <vandana.kannan@intel.com>
---
 tests/Makefile.sources |   1 +
 tests/kms_drrs.c       | 225 +++++++++++++++++++++++++++++++++++++++++++++++++
 2 files changed, 226 insertions(+)
 mode change 100644 => 100755 tests/Makefile.sources
 create mode 100644 tests/kms_drrs.c

diff --git a/tests/Makefile.sources b/tests/Makefile.sources
old mode 100644
new mode 100755
index 967dc8f..fbc0977
--- a/tests/Makefile.sources
+++ b/tests/Makefile.sources
@@ -64,6 +64,7 @@ TESTS_progs_M = \
 	gem_write_read_ring_switch \
 	kms_addfb \
 	kms_cursor_crc \
+	kms_drrs \
 	kms_fbc_crc \
 	kms_flip \
 	kms_flip_event_leak \
diff --git a/tests/kms_drrs.c b/tests/kms_drrs.c
new file mode 100644
index 0000000..5a360f3
--- /dev/null
+++ b/tests/kms_drrs.c
@@ -0,0 +1,225 @@
+/*
+ * Copyright © 2013 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 "drmtest.h"
+#include "igt_debugfs.h"
+#include "igt_kms.h"
+#include "intel_chipset.h"
+#include "intel_batchbuffer.h"
+#include "ioctl_wrappers.h"
+
+IGT_TEST_DESCRIPTION(
+"Performs write operations and then waits for DRRS to be enabled and then "
+"disturbs the contents of the screen once again to disable DRRS.");
+
+typedef struct {
+	int drm_fd;
+	uint32_t devid;
+	uint32_t handle[2];
+	igt_display_t display;
+	igt_output_t *output;
+	enum pipe pipe;
+	igt_plane_t *primary;
+	struct igt_fb fb[2];
+	uint32_t fb_id[2];
+} data_t;
+
+static bool drrs_enabled(data_t *data)
+{
+	FILE *status;
+	char str[64] = {};
+
+	status = igt_debugfs_fopen("i915_drrs_status", "r");
+	igt_assert(status);
+
+	fread(str, sizeof(str) - 1, 1, status);
+	fclose(status);
+	return strstr(str, "DRRS enabled") != NULL;
+}
+
+static bool prepare_crtc(data_t *data)
+{
+	igt_display_t *display = &data->display;
+	igt_output_t *output = data->output;
+
+	/* select the pipe we want to use */
+	igt_output_set_pipe(output, data->pipe);
+	igt_display_commit(display);
+
+	if (!output->valid) {
+		igt_output_set_pipe(output, PIPE_ANY);
+		igt_display_commit(display);
+		return false;
+	}
+
+	return true;
+}
+
+static bool prepare_test(data_t *data)
+{
+	igt_display_t *display = &data->display;
+	igt_output_t *output = data->output;
+	drmModeModeInfo *mode;
+
+	data->primary = igt_output_get_plane(data->output, IGT_PLANE_PRIMARY);
+	mode = igt_output_get_mode(data->output);
+
+	data->fb_id[0] = igt_create_color_fb(data->drm_fd, mode->hdisplay, mode->vdisplay,
+			DRM_FORMAT_XRGB8888,
+			I915_TILING_X,
+			0.0, 0.0, 0.0, &data->fb[0]);
+	igt_assert(data->fb_id[0]);
+	data->fb_id[1] = igt_create_color_fb(data->drm_fd, mode->hdisplay, mode->vdisplay,
+			DRM_FORMAT_XRGB8888,
+			I915_TILING_X,
+			0.1, 0.1, 0.1,
+			&data->fb[1]);
+	igt_assert(data->fb_id[1]);
+
+	data->handle[0] = data->fb[0].gem_handle;
+	data->handle[1] = data->fb[1].gem_handle;
+
+	/* scanout = fb[1] */
+	igt_plane_set_fb(data->primary, &data->fb[1]);
+	igt_display_commit(display);
+	usleep(1000000);
+
+	if (!drrs_enabled(data)) {
+		igt_info("DRRS not enabled\n");
+
+		igt_plane_set_fb(data->primary, NULL);
+		igt_output_set_pipe(output, PIPE_ANY);
+		igt_display_commit(display);
+
+		igt_remove_fb(data->drm_fd, &data->fb[0]);
+		igt_remove_fb(data->drm_fd, &data->fb[1]);
+		return false;
+	}
+
+	igt_wait_for_vblank(data->drm_fd, data->pipe);
+
+	/* scanout = fb[0] */
+	igt_plane_set_fb(data->primary, &data->fb[0]);
+	igt_display_commit(display);
+	usleep(100000);
+
+	igt_wait_for_vblank(data->drm_fd, data->pipe);
+
+	return true;
+}
+
+static void finish_crtc(data_t *data)
+{
+	igt_plane_set_fb(data->primary, NULL);
+	igt_output_set_pipe(data->output, PIPE_ANY);
+	igt_display_commit(&data->display);
+
+	igt_remove_fb(data->drm_fd, &data->fb[0]);
+	igt_remove_fb(data->drm_fd, &data->fb[1]);
+}
+
+static void reset_display(data_t *data)
+{
+	igt_display_t *display = &data->display;
+
+	for_each_connected_output(display, data->output) {
+		if (data->output->valid) {
+			data->primary =  igt_output_get_plane(data->output,
+							IGT_PLANE_PRIMARY);
+			igt_plane_set_fb(data->primary, NULL);
+		}
+		igt_output_set_pipe(data->output, PIPE_ANY);
+	}
+}
+
+static void run_test(data_t *data)
+{
+	igt_display_t *display = &data->display;
+	int valid_tests = 0;
+
+	reset_display(data);
+
+	for_each_connected_output(display, data->output) {
+		for_each_pipe(display, data->pipe) {
+			if (!prepare_crtc(data))
+				continue;
+
+			igt_info("Beginning %s on pipe %s, connector %s\n",
+					igt_subtest_name(),
+					kmstest_pipe_name(data->pipe),
+					igt_output_name(data->output));
+
+			if (!prepare_test(data)) {
+				igt_info("%s on pipe %s, connector %s: SKIPPED\n",
+						igt_subtest_name(),
+						kmstest_pipe_name(data->pipe),
+						igt_output_name(data->output));
+				continue;
+			}
+
+			valid_tests++;
+
+			igt_info("%s on pipe %s, connector %s: PASSED\n",
+					igt_subtest_name(),
+					kmstest_pipe_name(data->pipe),
+					igt_output_name(data->output));
+
+			finish_crtc(data);
+		}
+	}
+
+	igt_require_f(valid_tests, "no valid crtc/connector combinations found\n");
+}
+
+igt_main
+{
+	data_t data = {};
+
+	igt_skip_on_simulation();
+
+	igt_fixture {
+		char buf[64];
+		FILE *status;
+
+		data.drm_fd = drm_open_any_master();
+
+		data.devid = intel_get_drm_devid(data.drm_fd);
+
+		status = igt_debugfs_fopen("i915_drrs_status", "r");
+		igt_require_f(status, "No i915_drrs_status found\n");
+		fread(buf, sizeof(buf), 1, status);
+		fclose(status);
+		buf[sizeof(buf) - 1] = '\0';
+		igt_require_f(!strstr(buf, "disabled"),
+				"DRRS not supported:check VBT/panel caps\n");
+
+		igt_display_init(&data.display, data.drm_fd);
+	}
+
+	run_test(&data);
+
+	igt_fixture {
+		igt_display_fini(&data.display);
+	}
+}
-- 
2.0.1

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